Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (c) 2001 The Regents of the University of Michigan. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Kendrick Smith <kmsmith@umich.edu> |
| 6 | * Andy Adamson <kandros@umich.edu> |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. Neither the name of the University nor the names of its |
| 18 | * contributors may be used to endorse or promote products derived |
| 19 | * from this software without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 22 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 23 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 24 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 28 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | * |
| 33 | */ |
| 34 | |
Dave Hansen | aceaf78 | 2008-02-15 14:37:31 -0800 | [diff] [blame] | 35 | #include <linux/file.h> |
Arnd Bergmann | b89f432 | 2010-09-18 15:09:31 +0200 | [diff] [blame] | 36 | #include <linux/fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 37 | #include <linux/slab.h> |
NeilBrown | 0964a3d | 2005-06-23 22:04:32 -0700 | [diff] [blame] | 38 | #include <linux/namei.h> |
Meelap Shah | c2f1a55 | 2007-07-17 04:04:39 -0700 | [diff] [blame] | 39 | #include <linux/swap.h> |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 40 | #include <linux/pagemap.h> |
Chuck Lever | 7df302f | 2012-05-29 13:56:37 -0400 | [diff] [blame] | 41 | #include <linux/ratelimit.h> |
Olga Kornievskaia | 68e76ad | 2008-12-23 16:17:15 -0500 | [diff] [blame] | 42 | #include <linux/sunrpc/svcauth_gss.h> |
Jeff Layton | 5976687 | 2013-02-04 12:50:00 -0500 | [diff] [blame] | 43 | #include <linux/sunrpc/addr.h> |
NeilBrown | 6282cd5 | 2014-06-04 17:39:26 +1000 | [diff] [blame] | 44 | #include <linux/hash.h> |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 45 | #include "xdr4.h" |
J. Bruce Fields | 06b332a | 2013-04-09 11:34:36 -0400 | [diff] [blame] | 46 | #include "xdr4cb.h" |
J. Bruce Fields | 0a3adad | 2009-11-04 18:12:35 -0500 | [diff] [blame] | 47 | #include "vfs.h" |
J. Bruce Fields | bfa4b36 | 2012-04-25 16:49:18 -0400 | [diff] [blame] | 48 | #include "current_stateid.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Stanislav Kinsbursky | 5e1533c | 2012-07-25 16:56:58 +0400 | [diff] [blame] | 50 | #include "netns.h" |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
| 53 | |
J. Bruce Fields | f32f3c2 | 2011-12-12 15:00:35 -0500 | [diff] [blame] | 54 | #define all_ones {{~0,~0},~0} |
| 55 | static const stateid_t one_stateid = { |
| 56 | .si_generation = ~0, |
| 57 | .si_opaque = all_ones, |
| 58 | }; |
| 59 | static const stateid_t zero_stateid = { |
| 60 | /* all fields zero */ |
| 61 | }; |
Tigran Mkrtchyan | 19ff0f2 | 2012-02-13 22:55:23 +0100 | [diff] [blame] | 62 | static const stateid_t currentstateid = { |
| 63 | .si_generation = 1, |
| 64 | }; |
J. Bruce Fields | f32f3c2 | 2011-12-12 15:00:35 -0500 | [diff] [blame] | 65 | |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 66 | static u64 current_sessionid = 1; |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 67 | |
J. Bruce Fields | f32f3c2 | 2011-12-12 15:00:35 -0500 | [diff] [blame] | 68 | #define ZERO_STATEID(stateid) (!memcmp((stateid), &zero_stateid, sizeof(stateid_t))) |
| 69 | #define ONE_STATEID(stateid) (!memcmp((stateid), &one_stateid, sizeof(stateid_t))) |
Tigran Mkrtchyan | 19ff0f2 | 2012-02-13 22:55:23 +0100 | [diff] [blame] | 70 | #define CURRENT_STATEID(stateid) (!memcmp((stateid), ¤tstateid, sizeof(stateid_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | /* forward declarations */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 73 | static int check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 75 | /* Locking: */ |
| 76 | |
| 77 | /* Currently used for almost all code touching nfsv4 state: */ |
Ingo Molnar | 353ab6e | 2006-03-26 01:37:12 -0800 | [diff] [blame] | 78 | static DEFINE_MUTEX(client_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 80 | /* |
| 81 | * Currently used for the del_recall_lru and file hash table. In an |
| 82 | * effort to decrease the scope of the client_mutex, this spinlock may |
| 83 | * eventually cover more: |
| 84 | */ |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 85 | static DEFINE_SPINLOCK(state_lock); |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 86 | |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 87 | static struct kmem_cache *openowner_slab; |
| 88 | static struct kmem_cache *lockowner_slab; |
| 89 | static struct kmem_cache *file_slab; |
| 90 | static struct kmem_cache *stateid_slab; |
| 91 | static struct kmem_cache *deleg_slab; |
NeilBrown | e60d439 | 2005-06-23 22:03:01 -0700 | [diff] [blame] | 92 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | void |
| 94 | nfs4_lock_state(void) |
| 95 | { |
Ingo Molnar | 353ab6e | 2006-03-26 01:37:12 -0800 | [diff] [blame] | 96 | mutex_lock(&client_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | } |
| 98 | |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 99 | static void free_session(struct nfsd4_session *); |
Benny Halevy | 508dc6e | 2012-02-23 17:40:52 -0800 | [diff] [blame] | 100 | |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 101 | static bool is_session_dead(struct nfsd4_session *ses) |
Benny Halevy | 508dc6e | 2012-02-23 17:40:52 -0800 | [diff] [blame] | 102 | { |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 103 | return ses->se_flags & NFS4_SESSION_DEAD; |
| 104 | } |
| 105 | |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 106 | void nfsd4_put_session(struct nfsd4_session *ses) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 107 | { |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 108 | if (atomic_dec_and_test(&ses->se_ref) && is_session_dead(ses)) |
| 109 | free_session(ses); |
| 110 | } |
| 111 | |
| 112 | static __be32 mark_session_dead_locked(struct nfsd4_session *ses, int ref_held_by_me) |
| 113 | { |
| 114 | if (atomic_read(&ses->se_ref) > ref_held_by_me) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 115 | return nfserr_jukebox; |
| 116 | ses->se_flags |= NFS4_SESSION_DEAD; |
| 117 | return nfs_ok; |
| 118 | } |
| 119 | |
| 120 | static __be32 nfsd4_get_session_locked(struct nfsd4_session *ses) |
| 121 | { |
| 122 | if (is_session_dead(ses)) |
| 123 | return nfserr_badsession; |
| 124 | atomic_inc(&ses->se_ref); |
| 125 | return nfs_ok; |
Benny Halevy | 508dc6e | 2012-02-23 17:40:52 -0800 | [diff] [blame] | 126 | } |
| 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | void |
| 129 | nfs4_unlock_state(void) |
| 130 | { |
Ingo Molnar | 353ab6e | 2006-03-26 01:37:12 -0800 | [diff] [blame] | 131 | mutex_unlock(&client_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | } |
| 133 | |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 134 | static bool is_client_expired(struct nfs4_client *clp) |
| 135 | { |
| 136 | return clp->cl_time == 0; |
| 137 | } |
| 138 | |
| 139 | static __be32 mark_client_expired_locked(struct nfs4_client *clp) |
| 140 | { |
| 141 | if (atomic_read(&clp->cl_refcount)) |
| 142 | return nfserr_jukebox; |
| 143 | clp->cl_time = 0; |
| 144 | return nfs_ok; |
| 145 | } |
| 146 | |
| 147 | static __be32 mark_client_expired(struct nfs4_client *clp) |
| 148 | { |
| 149 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
| 150 | __be32 ret; |
| 151 | |
| 152 | spin_lock(&nn->client_lock); |
| 153 | ret = mark_client_expired_locked(clp); |
| 154 | spin_unlock(&nn->client_lock); |
| 155 | return ret; |
| 156 | } |
| 157 | |
| 158 | static __be32 get_client_locked(struct nfs4_client *clp) |
| 159 | { |
| 160 | if (is_client_expired(clp)) |
| 161 | return nfserr_expired; |
| 162 | atomic_inc(&clp->cl_refcount); |
| 163 | return nfs_ok; |
| 164 | } |
| 165 | |
| 166 | /* must be called under the client_lock */ |
| 167 | static inline void |
| 168 | renew_client_locked(struct nfs4_client *clp) |
| 169 | { |
| 170 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
| 171 | |
| 172 | if (is_client_expired(clp)) { |
| 173 | WARN_ON(1); |
| 174 | printk("%s: client (clientid %08x/%08x) already expired\n", |
| 175 | __func__, |
| 176 | clp->cl_clientid.cl_boot, |
| 177 | clp->cl_clientid.cl_id); |
| 178 | return; |
| 179 | } |
| 180 | |
| 181 | dprintk("renewing client (clientid %08x/%08x)\n", |
| 182 | clp->cl_clientid.cl_boot, |
| 183 | clp->cl_clientid.cl_id); |
| 184 | list_move_tail(&clp->cl_lru, &nn->client_lru); |
| 185 | clp->cl_time = get_seconds(); |
| 186 | } |
| 187 | |
| 188 | static inline void |
| 189 | renew_client(struct nfs4_client *clp) |
| 190 | { |
| 191 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
| 192 | |
| 193 | spin_lock(&nn->client_lock); |
| 194 | renew_client_locked(clp); |
| 195 | spin_unlock(&nn->client_lock); |
| 196 | } |
| 197 | |
Fengguang Wu | ba13843 | 2013-04-16 22:14:15 -0400 | [diff] [blame] | 198 | static void put_client_renew_locked(struct nfs4_client *clp) |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 199 | { |
| 200 | if (!atomic_dec_and_test(&clp->cl_refcount)) |
| 201 | return; |
| 202 | if (!is_client_expired(clp)) |
| 203 | renew_client_locked(clp); |
| 204 | } |
| 205 | |
| 206 | void put_client_renew(struct nfs4_client *clp) |
| 207 | { |
| 208 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
| 209 | |
| 210 | if (!atomic_dec_and_lock(&clp->cl_refcount, &nn->client_lock)) |
| 211 | return; |
| 212 | if (!is_client_expired(clp)) |
| 213 | renew_client_locked(clp); |
| 214 | spin_unlock(&nn->client_lock); |
| 215 | } |
| 216 | |
| 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | static inline u32 |
| 219 | opaque_hashval(const void *ptr, int nbytes) |
| 220 | { |
| 221 | unsigned char *cptr = (unsigned char *) ptr; |
| 222 | |
| 223 | u32 x = 0; |
| 224 | while (nbytes--) { |
| 225 | x *= 37; |
| 226 | x += *cptr++; |
| 227 | } |
| 228 | return x; |
| 229 | } |
| 230 | |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 231 | static void nfsd4_free_file(struct nfs4_file *f) |
| 232 | { |
| 233 | kmem_cache_free(file_slab, f); |
| 234 | } |
| 235 | |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 236 | static inline void |
| 237 | put_nfs4_file(struct nfs4_file *fi) |
| 238 | { |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 239 | if (atomic_dec_and_lock(&fi->fi_ref, &state_lock)) { |
Jeff Layton | 89876f8 | 2013-04-02 09:01:59 -0400 | [diff] [blame] | 240 | hlist_del(&fi->fi_hash); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 241 | spin_unlock(&state_lock); |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 242 | iput(fi->fi_inode); |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 243 | nfsd4_free_file(fi); |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 244 | } |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | static inline void |
| 248 | get_nfs4_file(struct nfs4_file *fi) |
| 249 | { |
J. Bruce Fields | 8b671b8 | 2009-02-22 14:51:34 -0800 | [diff] [blame] | 250 | atomic_inc(&fi->fi_ref); |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 251 | } |
| 252 | |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 253 | static int num_delegations; |
Zhang Yanfei | 697ce9b | 2013-02-22 16:35:47 -0800 | [diff] [blame] | 254 | unsigned long max_delegations; |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 255 | |
| 256 | /* |
| 257 | * Open owner state (share locks) |
| 258 | */ |
| 259 | |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 260 | /* hash tables for lock and open owners */ |
| 261 | #define OWNER_HASH_BITS 8 |
| 262 | #define OWNER_HASH_SIZE (1 << OWNER_HASH_BITS) |
| 263 | #define OWNER_HASH_MASK (OWNER_HASH_SIZE - 1) |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 264 | |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 265 | static unsigned int ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername) |
J. Bruce Fields | ddc04c4 | 2011-07-30 23:46:29 -0400 | [diff] [blame] | 266 | { |
| 267 | unsigned int ret; |
| 268 | |
| 269 | ret = opaque_hashval(ownername->data, ownername->len); |
| 270 | ret += clientid; |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 271 | return ret & OWNER_HASH_MASK; |
J. Bruce Fields | ddc04c4 | 2011-07-30 23:46:29 -0400 | [diff] [blame] | 272 | } |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 273 | |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 274 | /* hash table for nfs4_file */ |
| 275 | #define FILE_HASH_BITS 8 |
| 276 | #define FILE_HASH_SIZE (1 << FILE_HASH_BITS) |
Shan Wei | 3507958 | 2011-01-14 17:35:59 +0800 | [diff] [blame] | 277 | |
J. Bruce Fields | ddc04c4 | 2011-07-30 23:46:29 -0400 | [diff] [blame] | 278 | static unsigned int file_hashval(struct inode *ino) |
| 279 | { |
| 280 | /* XXX: why are we hashing on inode pointer, anyway? */ |
| 281 | return hash_ptr(ino, FILE_HASH_BITS); |
| 282 | } |
| 283 | |
Jeff Layton | 89876f8 | 2013-04-02 09:01:59 -0400 | [diff] [blame] | 284 | static struct hlist_head file_hashtbl[FILE_HASH_SIZE]; |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 285 | |
J. Bruce Fields | 3477565 | 2013-08-23 17:55:18 -0400 | [diff] [blame] | 286 | static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag) |
| 287 | { |
| 288 | WARN_ON_ONCE(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR])); |
| 289 | atomic_inc(&fp->fi_access[oflag]); |
| 290 | } |
| 291 | |
J. Bruce Fields | 998db52 | 2010-08-07 09:21:41 -0400 | [diff] [blame] | 292 | static void nfs4_file_get_access(struct nfs4_file *fp, int oflag) |
| 293 | { |
| 294 | if (oflag == O_RDWR) { |
J. Bruce Fields | 3477565 | 2013-08-23 17:55:18 -0400 | [diff] [blame] | 295 | __nfs4_file_get_access(fp, O_RDONLY); |
| 296 | __nfs4_file_get_access(fp, O_WRONLY); |
J. Bruce Fields | 998db52 | 2010-08-07 09:21:41 -0400 | [diff] [blame] | 297 | } else |
J. Bruce Fields | 3477565 | 2013-08-23 17:55:18 -0400 | [diff] [blame] | 298 | __nfs4_file_get_access(fp, oflag); |
J. Bruce Fields | 998db52 | 2010-08-07 09:21:41 -0400 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | static void nfs4_file_put_fd(struct nfs4_file *fp, int oflag) |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 302 | { |
| 303 | if (fp->fi_fds[oflag]) { |
| 304 | fput(fp->fi_fds[oflag]); |
| 305 | fp->fi_fds[oflag] = NULL; |
| 306 | } |
| 307 | } |
| 308 | |
J. Bruce Fields | 998db52 | 2010-08-07 09:21:41 -0400 | [diff] [blame] | 309 | static void __nfs4_file_put_access(struct nfs4_file *fp, int oflag) |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 310 | { |
| 311 | if (atomic_dec_and_test(&fp->fi_access[oflag])) { |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 312 | nfs4_file_put_fd(fp, oflag); |
J. Bruce Fields | 0c7c3e6 | 2013-03-28 20:37:14 -0400 | [diff] [blame] | 313 | if (atomic_read(&fp->fi_access[1 - oflag]) == 0) |
J. Bruce Fields | 3d02fa2 | 2011-09-19 15:07:41 -0400 | [diff] [blame] | 314 | nfs4_file_put_fd(fp, O_RDWR); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 315 | } |
| 316 | } |
| 317 | |
J. Bruce Fields | 998db52 | 2010-08-07 09:21:41 -0400 | [diff] [blame] | 318 | static void nfs4_file_put_access(struct nfs4_file *fp, int oflag) |
| 319 | { |
| 320 | if (oflag == O_RDWR) { |
| 321 | __nfs4_file_put_access(fp, O_RDONLY); |
| 322 | __nfs4_file_put_access(fp, O_WRONLY); |
| 323 | } else |
| 324 | __nfs4_file_put_access(fp, oflag); |
| 325 | } |
| 326 | |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 327 | static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct |
| 328 | kmem_cache *slab) |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 329 | { |
| 330 | struct idr *stateids = &cl->cl_stateids; |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 331 | struct nfs4_stid *stid; |
| 332 | int new_id; |
| 333 | |
| 334 | stid = kmem_cache_alloc(slab, GFP_KERNEL); |
| 335 | if (!stid) |
| 336 | return NULL; |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 337 | |
Jeff Layton | 398c33a | 2013-04-29 16:21:20 -0700 | [diff] [blame] | 338 | new_id = idr_alloc_cyclic(stateids, stid, 0, 0, GFP_KERNEL); |
Tejun Heo | ebd6c70 | 2013-03-13 14:59:37 -0700 | [diff] [blame] | 339 | if (new_id < 0) |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 340 | goto out_free; |
| 341 | stid->sc_client = cl; |
| 342 | stid->sc_type = 0; |
| 343 | stid->sc_stateid.si_opaque.so_id = new_id; |
| 344 | stid->sc_stateid.si_opaque.so_clid = cl->cl_clientid; |
| 345 | /* Will be incremented before return to client: */ |
| 346 | stid->sc_stateid.si_generation = 0; |
| 347 | |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 348 | /* |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 349 | * It shouldn't be a problem to reuse an opaque stateid value. |
| 350 | * I don't think it is for 4.1. But with 4.0 I worry that, for |
| 351 | * example, a stray write retransmission could be accepted by |
| 352 | * the server when it should have been rejected. Therefore, |
| 353 | * adopt a trick from the sctp code to attempt to maximize the |
| 354 | * amount of time until an id is reused, by ensuring they always |
| 355 | * "increase" (mod INT_MAX): |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 356 | */ |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 357 | return stid; |
| 358 | out_free: |
Wei Yongjun | 2c44a23 | 2013-04-09 14:15:31 +0800 | [diff] [blame] | 359 | kmem_cache_free(slab, stid); |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 360 | return NULL; |
J. Bruce Fields | 2a74aba | 2011-09-23 17:20:02 -0400 | [diff] [blame] | 361 | } |
| 362 | |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 363 | static struct nfs4_ol_stateid * nfs4_alloc_stateid(struct nfs4_client *clp) |
| 364 | { |
| 365 | return openlockstateid(nfs4_alloc_stid(clp, stateid_slab)); |
| 366 | } |
| 367 | |
NeilBrown | 6282cd5 | 2014-06-04 17:39:26 +1000 | [diff] [blame] | 368 | /* |
| 369 | * When we recall a delegation, we should be careful not to hand it |
| 370 | * out again straight away. |
| 371 | * To ensure this we keep a pair of bloom filters ('new' and 'old') |
| 372 | * in which the filehandles of recalled delegations are "stored". |
| 373 | * If a filehandle appear in either filter, a delegation is blocked. |
| 374 | * When a delegation is recalled, the filehandle is stored in the "new" |
| 375 | * filter. |
| 376 | * Every 30 seconds we swap the filters and clear the "new" one, |
| 377 | * unless both are empty of course. |
| 378 | * |
| 379 | * Each filter is 256 bits. We hash the filehandle to 32bit and use the |
| 380 | * low 3 bytes as hash-table indices. |
| 381 | * |
| 382 | * 'state_lock', which is always held when block_delegations() is called, |
| 383 | * is used to manage concurrent access. Testing does not need the lock |
| 384 | * except when swapping the two filters. |
| 385 | */ |
| 386 | static struct bloom_pair { |
| 387 | int entries, old_entries; |
| 388 | time_t swap_time; |
| 389 | int new; /* index into 'set' */ |
| 390 | DECLARE_BITMAP(set[2], 256); |
| 391 | } blocked_delegations; |
| 392 | |
| 393 | static int delegation_blocked(struct knfsd_fh *fh) |
| 394 | { |
| 395 | u32 hash; |
| 396 | struct bloom_pair *bd = &blocked_delegations; |
| 397 | |
| 398 | if (bd->entries == 0) |
| 399 | return 0; |
| 400 | if (seconds_since_boot() - bd->swap_time > 30) { |
| 401 | spin_lock(&state_lock); |
| 402 | if (seconds_since_boot() - bd->swap_time > 30) { |
| 403 | bd->entries -= bd->old_entries; |
| 404 | bd->old_entries = bd->entries; |
| 405 | memset(bd->set[bd->new], 0, |
| 406 | sizeof(bd->set[0])); |
| 407 | bd->new = 1-bd->new; |
| 408 | bd->swap_time = seconds_since_boot(); |
| 409 | } |
| 410 | spin_unlock(&state_lock); |
| 411 | } |
| 412 | hash = arch_fast_hash(&fh->fh_base, fh->fh_size, 0); |
| 413 | if (test_bit(hash&255, bd->set[0]) && |
| 414 | test_bit((hash>>8)&255, bd->set[0]) && |
| 415 | test_bit((hash>>16)&255, bd->set[0])) |
| 416 | return 1; |
| 417 | |
| 418 | if (test_bit(hash&255, bd->set[1]) && |
| 419 | test_bit((hash>>8)&255, bd->set[1]) && |
| 420 | test_bit((hash>>16)&255, bd->set[1])) |
| 421 | return 1; |
| 422 | |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | static void block_delegations(struct knfsd_fh *fh) |
| 427 | { |
| 428 | u32 hash; |
| 429 | struct bloom_pair *bd = &blocked_delegations; |
| 430 | |
| 431 | hash = arch_fast_hash(&fh->fh_base, fh->fh_size, 0); |
| 432 | |
| 433 | __set_bit(hash&255, bd->set[bd->new]); |
| 434 | __set_bit((hash>>8)&255, bd->set[bd->new]); |
| 435 | __set_bit((hash>>16)&255, bd->set[bd->new]); |
| 436 | if (bd->entries == 0) |
| 437 | bd->swap_time = seconds_since_boot(); |
| 438 | bd->entries += 1; |
| 439 | } |
| 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | static struct nfs4_delegation * |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 442 | alloc_init_deleg(struct nfs4_client *clp, struct nfs4_ol_stateid *stp, struct svc_fh *current_fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | { |
| 444 | struct nfs4_delegation *dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | dprintk("NFSD alloc_init_deleg\n"); |
Meelap Shah | c2f1a55 | 2007-07-17 04:04:39 -0700 | [diff] [blame] | 447 | if (num_delegations > max_delegations) |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 448 | return NULL; |
NeilBrown | 6282cd5 | 2014-06-04 17:39:26 +1000 | [diff] [blame] | 449 | if (delegation_blocked(¤t_fh->fh_handle)) |
| 450 | return NULL; |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 451 | dp = delegstateid(nfs4_alloc_stid(clp, deleg_slab)); |
NeilBrown | 5b2d21c | 2005-06-23 22:03:04 -0700 | [diff] [blame] | 452 | if (dp == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | return dp; |
J. Bruce Fields | 2a74aba | 2011-09-23 17:20:02 -0400 | [diff] [blame] | 454 | /* |
| 455 | * delegation seqid's are never incremented. The 4.1 special |
J. Bruce Fields | 6136d2b | 2011-09-23 16:21:15 -0400 | [diff] [blame] | 456 | * meaning of seqid 0 isn't meaningful, really, but let's avoid |
| 457 | * 0 anyway just for consistency and use 1: |
J. Bruce Fields | 2a74aba | 2011-09-23 17:20:02 -0400 | [diff] [blame] | 458 | */ |
| 459 | dp->dl_stid.sc_stateid.si_generation = 1; |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 460 | num_delegations++; |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 461 | INIT_LIST_HEAD(&dp->dl_perfile); |
| 462 | INIT_LIST_HEAD(&dp->dl_perclnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | INIT_LIST_HEAD(&dp->dl_recall_lru); |
J. Bruce Fields | bf7bd3e | 2013-08-15 16:55:26 -0400 | [diff] [blame] | 464 | dp->dl_file = NULL; |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 465 | dp->dl_type = NFS4_OPEN_DELEGATE_READ; |
J. Bruce Fields | 6c02eaa | 2009-02-02 17:30:51 -0500 | [diff] [blame] | 466 | fh_copy_shallow(&dp->dl_fh, ¤t_fh->fh_handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | dp->dl_time = 0; |
| 468 | atomic_set(&dp->dl_count, 1); |
J. Bruce Fields | 5772515 | 2012-11-05 15:10:26 -0500 | [diff] [blame] | 469 | nfsd4_init_callback(&dp->dl_recall); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | return dp; |
| 471 | } |
| 472 | |
J. Bruce Fields | 68a3396 | 2013-03-21 11:21:50 -0400 | [diff] [blame] | 473 | static void remove_stid(struct nfs4_stid *s) |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 474 | { |
| 475 | struct idr *stateids = &s->sc_client->cl_stateids; |
| 476 | |
| 477 | idr_remove(stateids, s->sc_stateid.si_opaque.so_id); |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 478 | } |
| 479 | |
Benny Halevy | 9857df8 | 2013-10-14 13:44:52 +0300 | [diff] [blame] | 480 | static void nfs4_free_stid(struct kmem_cache *slab, struct nfs4_stid *s) |
| 481 | { |
| 482 | kmem_cache_free(slab, s); |
| 483 | } |
| 484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | void |
| 486 | nfs4_put_delegation(struct nfs4_delegation *dp) |
| 487 | { |
| 488 | if (atomic_dec_and_test(&dp->dl_count)) { |
Benny Halevy | 9857df8 | 2013-10-14 13:44:52 +0300 | [diff] [blame] | 489 | nfs4_free_stid(deleg_slab, &dp->dl_stid); |
NeilBrown | ef0f339 | 2006-04-10 22:55:41 -0700 | [diff] [blame] | 490 | num_delegations--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | } |
| 492 | } |
| 493 | |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 494 | static void nfs4_put_deleg_lease(struct nfs4_file *fp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | { |
J. Bruce Fields | cbf7a75 | 2014-03-03 12:19:18 -0500 | [diff] [blame] | 496 | if (!fp->fi_lease) |
| 497 | return; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 498 | if (atomic_dec_and_test(&fp->fi_delegees)) { |
| 499 | vfs_setlease(fp->fi_deleg_file, F_UNLCK, &fp->fi_lease); |
| 500 | fp->fi_lease = NULL; |
J. Bruce Fields | 4ee6362 | 2011-04-15 18:08:26 -0400 | [diff] [blame] | 501 | fput(fp->fi_deleg_file); |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 502 | fp->fi_deleg_file = NULL; |
| 503 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | |
J. Bruce Fields | 6136d2b | 2011-09-23 16:21:15 -0400 | [diff] [blame] | 506 | static void unhash_stid(struct nfs4_stid *s) |
| 507 | { |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 508 | s->sc_type = 0; |
J. Bruce Fields | 6136d2b | 2011-09-23 16:21:15 -0400 | [diff] [blame] | 509 | } |
| 510 | |
Benny Halevy | 931ee56 | 2014-05-30 09:09:27 -0400 | [diff] [blame] | 511 | static void |
| 512 | hash_delegation_locked(struct nfs4_delegation *dp, struct nfs4_file *fp) |
| 513 | { |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 514 | lockdep_assert_held(&state_lock); |
Benny Halevy | 931ee56 | 2014-05-30 09:09:27 -0400 | [diff] [blame] | 515 | |
Benny Halevy | 3fb87d1 | 2014-05-30 09:09:31 -0400 | [diff] [blame] | 516 | dp->dl_stid.sc_type = NFS4_DELEG_STID; |
Benny Halevy | 931ee56 | 2014-05-30 09:09:27 -0400 | [diff] [blame] | 517 | list_add(&dp->dl_perfile, &fp->fi_delegations); |
| 518 | list_add(&dp->dl_perclnt, &dp->dl_stid.sc_client->cl_delegations); |
| 519 | } |
| 520 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | /* Called under the state lock. */ |
| 522 | static void |
| 523 | unhash_delegation(struct nfs4_delegation *dp) |
| 524 | { |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 525 | spin_lock(&state_lock); |
Benny Halevy | 931ee56 | 2014-05-30 09:09:27 -0400 | [diff] [blame] | 526 | list_del_init(&dp->dl_perclnt); |
J. Bruce Fields | 5d926e8 | 2011-02-07 16:53:46 -0500 | [diff] [blame] | 527 | list_del_init(&dp->dl_perfile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | list_del_init(&dp->dl_recall_lru); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 529 | spin_unlock(&state_lock); |
J. Bruce Fields | cbf7a75 | 2014-03-03 12:19:18 -0500 | [diff] [blame] | 530 | if (dp->dl_file) { |
| 531 | nfs4_put_deleg_lease(dp->dl_file); |
| 532 | put_nfs4_file(dp->dl_file); |
| 533 | dp->dl_file = NULL; |
| 534 | } |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | |
| 538 | |
| 539 | static void destroy_revoked_delegation(struct nfs4_delegation *dp) |
| 540 | { |
| 541 | list_del_init(&dp->dl_recall_lru); |
J. Bruce Fields | 68a3396 | 2013-03-21 11:21:50 -0400 | [diff] [blame] | 542 | remove_stid(&dp->dl_stid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | nfs4_put_delegation(dp); |
| 544 | } |
| 545 | |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 546 | static void destroy_delegation(struct nfs4_delegation *dp) |
| 547 | { |
| 548 | unhash_delegation(dp); |
| 549 | remove_stid(&dp->dl_stid); |
| 550 | nfs4_put_delegation(dp); |
| 551 | } |
| 552 | |
| 553 | static void revoke_delegation(struct nfs4_delegation *dp) |
| 554 | { |
| 555 | struct nfs4_client *clp = dp->dl_stid.sc_client; |
| 556 | |
| 557 | if (clp->cl_minorversion == 0) |
| 558 | destroy_delegation(dp); |
| 559 | else { |
| 560 | unhash_delegation(dp); |
| 561 | dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID; |
| 562 | list_add(&dp->dl_recall_lru, &clp->cl_revoked); |
| 563 | } |
| 564 | } |
| 565 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | /* |
| 567 | * SETCLIENTID state |
| 568 | */ |
| 569 | |
J. Bruce Fields | ddc04c4 | 2011-07-30 23:46:29 -0400 | [diff] [blame] | 570 | static unsigned int clientid_hashval(u32 id) |
| 571 | { |
| 572 | return id & CLIENT_HASH_MASK; |
| 573 | } |
| 574 | |
| 575 | static unsigned int clientstr_hashval(const char *name) |
| 576 | { |
| 577 | return opaque_hashval(name, 8) & CLIENT_HASH_MASK; |
| 578 | } |
| 579 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | /* |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 581 | * We store the NONE, READ, WRITE, and BOTH bits separately in the |
| 582 | * st_{access,deny}_bmap field of the stateid, in order to track not |
| 583 | * only what share bits are currently in force, but also what |
| 584 | * combinations of share bits previous opens have used. This allows us |
| 585 | * to enforce the recommendation of rfc 3530 14.2.19 that the server |
| 586 | * return an error if the client attempt to downgrade to a combination |
| 587 | * of share bits not explicable by closing some of its previous opens. |
| 588 | * |
| 589 | * XXX: This enforcement is actually incomplete, since we don't keep |
| 590 | * track of access/deny bit combinations; so, e.g., we allow: |
| 591 | * |
| 592 | * OPEN allow read, deny write |
| 593 | * OPEN allow both, deny none |
| 594 | * DOWNGRADE allow read, deny none |
| 595 | * |
| 596 | * which we should reject. |
| 597 | */ |
Jeff Layton | 5ae037e | 2012-05-11 09:45:11 -0400 | [diff] [blame] | 598 | static unsigned int |
| 599 | bmap_to_share_mode(unsigned long bmap) { |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 600 | int i; |
Jeff Layton | 5ae037e | 2012-05-11 09:45:11 -0400 | [diff] [blame] | 601 | unsigned int access = 0; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 602 | |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 603 | for (i = 1; i < 4; i++) { |
| 604 | if (test_bit(i, &bmap)) |
Jeff Layton | 5ae037e | 2012-05-11 09:45:11 -0400 | [diff] [blame] | 605 | access |= i; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 606 | } |
Jeff Layton | 5ae037e | 2012-05-11 09:45:11 -0400 | [diff] [blame] | 607 | return access; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 608 | } |
| 609 | |
Jeff Layton | 3a32861 | 2012-05-11 09:45:12 -0400 | [diff] [blame] | 610 | static bool |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 611 | test_share(struct nfs4_ol_stateid *stp, struct nfsd4_open *open) { |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 612 | unsigned int access, deny; |
| 613 | |
Jeff Layton | 5ae037e | 2012-05-11 09:45:11 -0400 | [diff] [blame] | 614 | access = bmap_to_share_mode(stp->st_access_bmap); |
| 615 | deny = bmap_to_share_mode(stp->st_deny_bmap); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 616 | if ((access & open->op_share_deny) || (deny & open->op_share_access)) |
Jeff Layton | 3a32861 | 2012-05-11 09:45:12 -0400 | [diff] [blame] | 617 | return false; |
| 618 | return true; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 619 | } |
| 620 | |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 621 | /* set share access for a given stateid */ |
| 622 | static inline void |
| 623 | set_access(u32 access, struct nfs4_ol_stateid *stp) |
| 624 | { |
| 625 | __set_bit(access, &stp->st_access_bmap); |
| 626 | } |
| 627 | |
| 628 | /* clear share access for a given stateid */ |
| 629 | static inline void |
| 630 | clear_access(u32 access, struct nfs4_ol_stateid *stp) |
| 631 | { |
| 632 | __clear_bit(access, &stp->st_access_bmap); |
| 633 | } |
| 634 | |
| 635 | /* test whether a given stateid has access */ |
| 636 | static inline bool |
| 637 | test_access(u32 access, struct nfs4_ol_stateid *stp) |
| 638 | { |
| 639 | return test_bit(access, &stp->st_access_bmap); |
| 640 | } |
| 641 | |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 642 | /* set share deny for a given stateid */ |
| 643 | static inline void |
| 644 | set_deny(u32 access, struct nfs4_ol_stateid *stp) |
| 645 | { |
| 646 | __set_bit(access, &stp->st_deny_bmap); |
| 647 | } |
| 648 | |
| 649 | /* clear share deny for a given stateid */ |
| 650 | static inline void |
| 651 | clear_deny(u32 access, struct nfs4_ol_stateid *stp) |
| 652 | { |
| 653 | __clear_bit(access, &stp->st_deny_bmap); |
| 654 | } |
| 655 | |
| 656 | /* test whether a given stateid is denying specific access */ |
| 657 | static inline bool |
| 658 | test_deny(u32 access, struct nfs4_ol_stateid *stp) |
| 659 | { |
| 660 | return test_bit(access, &stp->st_deny_bmap); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 661 | } |
| 662 | |
| 663 | static int nfs4_access_to_omode(u32 access) |
| 664 | { |
J. Bruce Fields | 8f34a43 | 2010-09-02 15:23:16 -0400 | [diff] [blame] | 665 | switch (access & NFS4_SHARE_ACCESS_BOTH) { |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 666 | case NFS4_SHARE_ACCESS_READ: |
| 667 | return O_RDONLY; |
| 668 | case NFS4_SHARE_ACCESS_WRITE: |
| 669 | return O_WRONLY; |
| 670 | case NFS4_SHARE_ACCESS_BOTH: |
| 671 | return O_RDWR; |
| 672 | } |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 673 | WARN_ON_ONCE(1); |
| 674 | return O_RDONLY; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 675 | } |
| 676 | |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 677 | /* release all access and file references for a given stateid */ |
| 678 | static void |
| 679 | release_all_access(struct nfs4_ol_stateid *stp) |
| 680 | { |
| 681 | int i; |
| 682 | |
| 683 | for (i = 1; i < 4; i++) { |
| 684 | if (test_access(i, stp)) |
| 685 | nfs4_file_put_access(stp->st_file, |
| 686 | nfs4_access_to_omode(i)); |
| 687 | clear_access(i, stp); |
| 688 | } |
| 689 | } |
| 690 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 691 | static void unhash_generic_stateid(struct nfs4_ol_stateid *stp) |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 692 | { |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 693 | list_del(&stp->st_perfile); |
| 694 | list_del(&stp->st_perstateowner); |
| 695 | } |
| 696 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 697 | static void close_generic_stateid(struct nfs4_ol_stateid *stp) |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 698 | { |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 699 | release_all_access(stp); |
OGAWA Hirofumi | a96e5b9 | 2011-04-18 11:48:55 -0400 | [diff] [blame] | 700 | put_nfs4_file(stp->st_file); |
J. Bruce Fields | 4665e2b | 2011-09-06 14:50:49 -0400 | [diff] [blame] | 701 | stp->st_file = NULL; |
| 702 | } |
| 703 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 704 | static void free_generic_stateid(struct nfs4_ol_stateid *stp) |
J. Bruce Fields | 4665e2b | 2011-09-06 14:50:49 -0400 | [diff] [blame] | 705 | { |
J. Bruce Fields | 68a3396 | 2013-03-21 11:21:50 -0400 | [diff] [blame] | 706 | remove_stid(&stp->st_stid); |
Benny Halevy | 9857df8 | 2013-10-14 13:44:52 +0300 | [diff] [blame] | 707 | nfs4_free_stid(stateid_slab, &stp->st_stid); |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 708 | } |
| 709 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 710 | static void release_lock_stateid(struct nfs4_ol_stateid *stp) |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 711 | { |
| 712 | struct file *file; |
| 713 | |
| 714 | unhash_generic_stateid(stp); |
J. Bruce Fields | 6136d2b | 2011-09-23 16:21:15 -0400 | [diff] [blame] | 715 | unhash_stid(&stp->st_stid); |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 716 | file = find_any_file(stp->st_file); |
| 717 | if (file) |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 718 | locks_remove_posix(file, (fl_owner_t)lockowner(stp->st_stateowner)); |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 719 | close_generic_stateid(stp); |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 720 | free_generic_stateid(stp); |
| 721 | } |
| 722 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 723 | static void unhash_lockowner(struct nfs4_lockowner *lo) |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 724 | { |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 725 | struct nfs4_ol_stateid *stp; |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 726 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 727 | list_del(&lo->lo_owner.so_strhash); |
| 728 | list_del(&lo->lo_perstateid); |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 729 | list_del(&lo->lo_owner_ino_hash); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 730 | while (!list_empty(&lo->lo_owner.so_stateids)) { |
| 731 | stp = list_first_entry(&lo->lo_owner.so_stateids, |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 732 | struct nfs4_ol_stateid, st_perstateowner); |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 733 | release_lock_stateid(stp); |
| 734 | } |
| 735 | } |
| 736 | |
Trond Myklebust | 50cc623 | 2014-04-18 14:44:03 -0400 | [diff] [blame] | 737 | static void nfs4_free_lockowner(struct nfs4_lockowner *lo) |
| 738 | { |
| 739 | kfree(lo->lo_owner.so_owner.data); |
| 740 | kmem_cache_free(lockowner_slab, lo); |
| 741 | } |
| 742 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 743 | static void release_lockowner(struct nfs4_lockowner *lo) |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 744 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 745 | unhash_lockowner(lo); |
| 746 | nfs4_free_lockowner(lo); |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | static void |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 750 | release_stateid_lockowners(struct nfs4_ol_stateid *open_stp) |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 751 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 752 | struct nfs4_lockowner *lo; |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 753 | |
| 754 | while (!list_empty(&open_stp->st_lockowners)) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 755 | lo = list_entry(open_stp->st_lockowners.next, |
| 756 | struct nfs4_lockowner, lo_perstateid); |
| 757 | release_lockowner(lo); |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 758 | } |
| 759 | } |
| 760 | |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 761 | static void unhash_open_stateid(struct nfs4_ol_stateid *stp) |
J. Bruce Fields | 2283963 | 2009-01-11 14:27:17 -0500 | [diff] [blame] | 762 | { |
| 763 | unhash_generic_stateid(stp); |
| 764 | release_stateid_lockowners(stp); |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 765 | close_generic_stateid(stp); |
| 766 | } |
| 767 | |
| 768 | static void release_open_stateid(struct nfs4_ol_stateid *stp) |
| 769 | { |
| 770 | unhash_open_stateid(stp); |
J. Bruce Fields | 2283963 | 2009-01-11 14:27:17 -0500 | [diff] [blame] | 771 | free_generic_stateid(stp); |
| 772 | } |
| 773 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 774 | static void unhash_openowner(struct nfs4_openowner *oo) |
J. Bruce Fields | f1d110c | 2009-01-11 14:37:31 -0500 | [diff] [blame] | 775 | { |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 776 | struct nfs4_ol_stateid *stp; |
J. Bruce Fields | f1d110c | 2009-01-11 14:37:31 -0500 | [diff] [blame] | 777 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 778 | list_del(&oo->oo_owner.so_strhash); |
| 779 | list_del(&oo->oo_perclient); |
| 780 | while (!list_empty(&oo->oo_owner.so_stateids)) { |
| 781 | stp = list_first_entry(&oo->oo_owner.so_stateids, |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 782 | struct nfs4_ol_stateid, st_perstateowner); |
J. Bruce Fields | f044ff8 | 2009-01-11 15:24:04 -0500 | [diff] [blame] | 783 | release_open_stateid(stp); |
J. Bruce Fields | f1d110c | 2009-01-11 14:37:31 -0500 | [diff] [blame] | 784 | } |
| 785 | } |
| 786 | |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 787 | static void release_last_closed_stateid(struct nfs4_openowner *oo) |
| 788 | { |
| 789 | struct nfs4_ol_stateid *s = oo->oo_last_closed_stid; |
| 790 | |
| 791 | if (s) { |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 792 | free_generic_stateid(s); |
| 793 | oo->oo_last_closed_stid = NULL; |
| 794 | } |
| 795 | } |
| 796 | |
Trond Myklebust | 50cc623 | 2014-04-18 14:44:03 -0400 | [diff] [blame] | 797 | static void nfs4_free_openowner(struct nfs4_openowner *oo) |
| 798 | { |
| 799 | kfree(oo->oo_owner.so_owner.data); |
| 800 | kmem_cache_free(openowner_slab, oo); |
| 801 | } |
| 802 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 803 | static void release_openowner(struct nfs4_openowner *oo) |
J. Bruce Fields | f1d110c | 2009-01-11 14:37:31 -0500 | [diff] [blame] | 804 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 805 | unhash_openowner(oo); |
| 806 | list_del(&oo->oo_close_lru); |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 807 | release_last_closed_stateid(oo); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 808 | nfs4_free_openowner(oo); |
J. Bruce Fields | f1d110c | 2009-01-11 14:37:31 -0500 | [diff] [blame] | 809 | } |
| 810 | |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 811 | static inline int |
| 812 | hash_sessionid(struct nfs4_sessionid *sessionid) |
| 813 | { |
| 814 | struct nfsd4_sessionid *sid = (struct nfsd4_sessionid *)sessionid; |
| 815 | |
| 816 | return sid->sequence % SESSION_HASH_SIZE; |
| 817 | } |
| 818 | |
Trond Myklebust | 8f199b8 | 2012-03-20 15:11:17 -0400 | [diff] [blame] | 819 | #ifdef NFSD_DEBUG |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 820 | static inline void |
| 821 | dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid) |
| 822 | { |
| 823 | u32 *ptr = (u32 *)(&sessionid->data[0]); |
| 824 | dprintk("%s: %u:%u:%u:%u\n", fn, ptr[0], ptr[1], ptr[2], ptr[3]); |
| 825 | } |
Trond Myklebust | 8f199b8 | 2012-03-20 15:11:17 -0400 | [diff] [blame] | 826 | #else |
| 827 | static inline void |
| 828 | dump_sessionid(const char *fn, struct nfs4_sessionid *sessionid) |
| 829 | { |
| 830 | } |
| 831 | #endif |
| 832 | |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 833 | /* |
| 834 | * Bump the seqid on cstate->replay_owner, and clear replay_owner if it |
| 835 | * won't be used for replay. |
| 836 | */ |
| 837 | void nfsd4_bump_seqid(struct nfsd4_compound_state *cstate, __be32 nfserr) |
| 838 | { |
| 839 | struct nfs4_stateowner *so = cstate->replay_owner; |
| 840 | |
| 841 | if (nfserr == nfserr_replay_me) |
| 842 | return; |
| 843 | |
| 844 | if (!seqid_mutating_err(ntohl(nfserr))) { |
| 845 | cstate->replay_owner = NULL; |
| 846 | return; |
| 847 | } |
| 848 | if (!so) |
| 849 | return; |
| 850 | if (so->so_is_open_owner) |
| 851 | release_last_closed_stateid(openowner(so)); |
| 852 | so->so_seqid++; |
| 853 | return; |
| 854 | } |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 855 | |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 856 | static void |
| 857 | gen_sessionid(struct nfsd4_session *ses) |
| 858 | { |
| 859 | struct nfs4_client *clp = ses->se_client; |
| 860 | struct nfsd4_sessionid *sid; |
| 861 | |
| 862 | sid = (struct nfsd4_sessionid *)ses->se_sessionid.data; |
| 863 | sid->clientid = clp->cl_clientid; |
| 864 | sid->sequence = current_sessionid++; |
| 865 | sid->reserved = 0; |
| 866 | } |
| 867 | |
| 868 | /* |
Andy Adamson | a649637 | 2009-08-28 08:45:01 -0400 | [diff] [blame] | 869 | * The protocol defines ca_maxresponssize_cached to include the size of |
| 870 | * the rpc header, but all we need to cache is the data starting after |
| 871 | * the end of the initial SEQUENCE operation--the rest we regenerate |
| 872 | * each time. Therefore we can advertise a ca_maxresponssize_cached |
| 873 | * value that is the number of bytes in our cache plus a few additional |
| 874 | * bytes. In order to stay on the safe side, and not promise more than |
| 875 | * we can cache, those additional bytes must be the minimum possible: 24 |
| 876 | * bytes of rpc header (xid through accept state, with AUTH_NULL |
| 877 | * verifier), 12 for the compound header (with zero-length tag), and 44 |
| 878 | * for the SEQUENCE op response: |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 879 | */ |
Andy Adamson | a649637 | 2009-08-28 08:45:01 -0400 | [diff] [blame] | 880 | #define NFSD_MIN_HDR_SEQ_SZ (24 + 12 + 44) |
| 881 | |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 882 | static void |
| 883 | free_session_slots(struct nfsd4_session *ses) |
| 884 | { |
| 885 | int i; |
| 886 | |
| 887 | for (i = 0; i < ses->se_fchannel.maxreqs; i++) |
| 888 | kfree(ses->se_slots[i]); |
| 889 | } |
| 890 | |
J. Bruce Fields | efe0cb6 | 2009-10-24 20:52:16 -0400 | [diff] [blame] | 891 | /* |
| 892 | * We don't actually need to cache the rpc and session headers, so we |
| 893 | * can allocate a little less for each slot: |
| 894 | */ |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 895 | static inline u32 slot_bytes(struct nfsd4_channel_attrs *ca) |
J. Bruce Fields | efe0cb6 | 2009-10-24 20:52:16 -0400 | [diff] [blame] | 896 | { |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 897 | u32 size; |
J. Bruce Fields | efe0cb6 | 2009-10-24 20:52:16 -0400 | [diff] [blame] | 898 | |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 899 | if (ca->maxresp_cached < NFSD_MIN_HDR_SEQ_SZ) |
| 900 | size = 0; |
| 901 | else |
| 902 | size = ca->maxresp_cached - NFSD_MIN_HDR_SEQ_SZ; |
| 903 | return size + sizeof(struct nfsd4_slot); |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 904 | } |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 905 | |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 906 | /* |
| 907 | * XXX: If we run out of reserved DRC memory we could (up to a point) |
| 908 | * re-negotiate active sessions and reduce their slot usage to make |
Justin P. Mattock | 42b2aa8 | 2011-11-28 20:31:00 -0800 | [diff] [blame] | 909 | * room for new connections. For now we just fail the create session. |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 910 | */ |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 911 | static u32 nfsd4_get_drc_mem(struct nfsd4_channel_attrs *ca) |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 912 | { |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 913 | u32 slotsize = slot_bytes(ca); |
| 914 | u32 num = ca->maxreqs; |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 915 | int avail; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 916 | |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 917 | spin_lock(&nfsd_drc_lock); |
Zhang Yanfei | 697ce9b | 2013-02-22 16:35:47 -0800 | [diff] [blame] | 918 | avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION, |
| 919 | nfsd_drc_max_mem - nfsd_drc_mem_used); |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 920 | num = min_t(int, num, avail / slotsize); |
| 921 | nfsd_drc_mem_used += num * slotsize; |
| 922 | spin_unlock(&nfsd_drc_lock); |
| 923 | |
| 924 | return num; |
| 925 | } |
| 926 | |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 927 | static void nfsd4_put_drc_mem(struct nfsd4_channel_attrs *ca) |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 928 | { |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 929 | int slotsize = slot_bytes(ca); |
| 930 | |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 931 | spin_lock(&nfsd_drc_lock); |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 932 | nfsd_drc_mem_used -= slotsize * ca->maxreqs; |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 933 | spin_unlock(&nfsd_drc_lock); |
| 934 | } |
| 935 | |
Kinglong Mee | 60810e5 | 2014-01-01 00:35:47 +0800 | [diff] [blame] | 936 | static struct nfsd4_session *alloc_session(struct nfsd4_channel_attrs *fattrs, |
| 937 | struct nfsd4_channel_attrs *battrs) |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 938 | { |
Kinglong Mee | 60810e5 | 2014-01-01 00:35:47 +0800 | [diff] [blame] | 939 | int numslots = fattrs->maxreqs; |
| 940 | int slotsize = slot_bytes(fattrs); |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 941 | struct nfsd4_session *new; |
| 942 | int mem, i; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 943 | |
J. Bruce Fields | c23753d | 2010-09-27 16:22:30 -0400 | [diff] [blame] | 944 | BUILD_BUG_ON(NFSD_MAX_SLOTS_PER_SESSION * sizeof(struct nfsd4_slot *) |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 945 | + sizeof(struct nfsd4_session) > PAGE_SIZE); |
| 946 | mem = numslots * sizeof(struct nfsd4_slot *); |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 947 | |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 948 | new = kzalloc(sizeof(*new) + mem, GFP_KERNEL); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 949 | if (!new) |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 950 | return NULL; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 951 | /* allocate each struct nfsd4_slot and data cache in one piece */ |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 952 | for (i = 0; i < numslots; i++) { |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 953 | new->se_slots[i] = kzalloc(slotsize, GFP_KERNEL); |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 954 | if (!new->se_slots[i]) |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 955 | goto out_free; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 956 | } |
Kinglong Mee | 60810e5 | 2014-01-01 00:35:47 +0800 | [diff] [blame] | 957 | |
| 958 | memcpy(&new->se_fchannel, fattrs, sizeof(struct nfsd4_channel_attrs)); |
| 959 | memcpy(&new->se_bchannel, battrs, sizeof(struct nfsd4_channel_attrs)); |
| 960 | |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 961 | return new; |
| 962 | out_free: |
| 963 | while (i--) |
| 964 | kfree(new->se_slots[i]); |
| 965 | kfree(new); |
| 966 | return NULL; |
| 967 | } |
| 968 | |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 969 | static void free_conn(struct nfsd4_conn *c) |
| 970 | { |
| 971 | svc_xprt_put(c->cn_xprt); |
| 972 | kfree(c); |
| 973 | } |
| 974 | |
| 975 | static void nfsd4_conn_lost(struct svc_xpt_user *u) |
| 976 | { |
| 977 | struct nfsd4_conn *c = container_of(u, struct nfsd4_conn, cn_xpt_user); |
| 978 | struct nfs4_client *clp = c->cn_session->se_client; |
| 979 | |
| 980 | spin_lock(&clp->cl_lock); |
| 981 | if (!list_empty(&c->cn_persession)) { |
| 982 | list_del(&c->cn_persession); |
| 983 | free_conn(c); |
| 984 | } |
J. Bruce Fields | eea4980 | 2010-11-18 08:34:12 -0500 | [diff] [blame] | 985 | nfsd4_probe_callback(clp); |
J. Bruce Fields | 2e4b723 | 2013-03-08 09:30:43 -0500 | [diff] [blame] | 986 | spin_unlock(&clp->cl_lock); |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 987 | } |
| 988 | |
J. Bruce Fields | d29c374 | 2010-06-15 17:34:11 -0400 | [diff] [blame] | 989 | static struct nfsd4_conn *alloc_conn(struct svc_rqst *rqstp, u32 flags) |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 990 | { |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 991 | struct nfsd4_conn *conn; |
| 992 | |
| 993 | conn = kmalloc(sizeof(struct nfsd4_conn), GFP_KERNEL); |
| 994 | if (!conn) |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 995 | return NULL; |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 996 | svc_xprt_get(rqstp->rq_xprt); |
| 997 | conn->cn_xprt = rqstp->rq_xprt; |
J. Bruce Fields | d29c374 | 2010-06-15 17:34:11 -0400 | [diff] [blame] | 998 | conn->cn_flags = flags; |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 999 | INIT_LIST_HEAD(&conn->cn_xpt_user.list); |
| 1000 | return conn; |
| 1001 | } |
| 1002 | |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 1003 | static void __nfsd4_hash_conn(struct nfsd4_conn *conn, struct nfsd4_session *ses) |
| 1004 | { |
| 1005 | conn->cn_session = ses; |
| 1006 | list_add(&conn->cn_persession, &ses->se_conns); |
| 1007 | } |
| 1008 | |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1009 | static void nfsd4_hash_conn(struct nfsd4_conn *conn, struct nfsd4_session *ses) |
| 1010 | { |
| 1011 | struct nfs4_client *clp = ses->se_client; |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1012 | |
| 1013 | spin_lock(&clp->cl_lock); |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 1014 | __nfsd4_hash_conn(conn, ses); |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1015 | spin_unlock(&clp->cl_lock); |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1016 | } |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1017 | |
J. Bruce Fields | 21b75b0 | 2010-10-26 10:07:17 -0400 | [diff] [blame] | 1018 | static int nfsd4_register_conn(struct nfsd4_conn *conn) |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1019 | { |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 1020 | conn->cn_xpt_user.callback = nfsd4_conn_lost; |
J. Bruce Fields | 21b75b0 | 2010-10-26 10:07:17 -0400 | [diff] [blame] | 1021 | return register_xpt_user(conn->cn_xprt, &conn->cn_xpt_user); |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1022 | } |
| 1023 | |
J. Bruce Fields | e1ff371 | 2012-09-11 17:10:25 -0400 | [diff] [blame] | 1024 | static void nfsd4_init_conn(struct svc_rqst *rqstp, struct nfsd4_conn *conn, struct nfsd4_session *ses) |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1025 | { |
J. Bruce Fields | 21b75b0 | 2010-10-26 10:07:17 -0400 | [diff] [blame] | 1026 | int ret; |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1027 | |
J. Bruce Fields | db90681 | 2010-09-29 15:29:32 -0400 | [diff] [blame] | 1028 | nfsd4_hash_conn(conn, ses); |
J. Bruce Fields | 21b75b0 | 2010-10-26 10:07:17 -0400 | [diff] [blame] | 1029 | ret = nfsd4_register_conn(conn); |
| 1030 | if (ret) |
| 1031 | /* oops; xprt is already down: */ |
| 1032 | nfsd4_conn_lost(&conn->cn_xpt_user); |
J. Bruce Fields | 6a3b156 | 2012-09-12 09:59:17 -0400 | [diff] [blame] | 1033 | if (conn->cn_flags & NFS4_CDFC4_BACK) { |
Weston Andros Adamson | 2411967 | 2012-05-24 15:42:17 -0400 | [diff] [blame] | 1034 | /* callback channel may be back up */ |
| 1035 | nfsd4_probe_callback(ses->se_client); |
| 1036 | } |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1037 | } |
| 1038 | |
J. Bruce Fields | e1ff371 | 2012-09-11 17:10:25 -0400 | [diff] [blame] | 1039 | static struct nfsd4_conn *alloc_conn_from_crses(struct svc_rqst *rqstp, struct nfsd4_create_session *cses) |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 1040 | { |
| 1041 | u32 dir = NFS4_CDFC4_FORE; |
| 1042 | |
J. Bruce Fields | e1ff371 | 2012-09-11 17:10:25 -0400 | [diff] [blame] | 1043 | if (cses->flags & SESSION4_BACK_CHAN) |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 1044 | dir |= NFS4_CDFC4_BACK; |
J. Bruce Fields | e1ff371 | 2012-09-11 17:10:25 -0400 | [diff] [blame] | 1045 | return alloc_conn(rqstp, dir); |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 1046 | } |
| 1047 | |
| 1048 | /* must be called under client_lock */ |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 1049 | static void nfsd4_del_conns(struct nfsd4_session *s) |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1050 | { |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 1051 | struct nfs4_client *clp = s->se_client; |
| 1052 | struct nfsd4_conn *c; |
| 1053 | |
| 1054 | spin_lock(&clp->cl_lock); |
| 1055 | while (!list_empty(&s->se_conns)) { |
| 1056 | c = list_first_entry(&s->se_conns, struct nfsd4_conn, cn_persession); |
| 1057 | list_del_init(&c->cn_persession); |
| 1058 | spin_unlock(&clp->cl_lock); |
| 1059 | |
| 1060 | unregister_xpt_user(c->cn_xprt, &c->cn_xpt_user); |
| 1061 | free_conn(c); |
| 1062 | |
| 1063 | spin_lock(&clp->cl_lock); |
| 1064 | } |
| 1065 | spin_unlock(&clp->cl_lock); |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1066 | } |
| 1067 | |
J. Bruce Fields | 1377b69 | 2012-09-11 21:42:40 -0400 | [diff] [blame] | 1068 | static void __free_session(struct nfsd4_session *ses) |
| 1069 | { |
J. Bruce Fields | 1377b69 | 2012-09-11 21:42:40 -0400 | [diff] [blame] | 1070 | free_session_slots(ses); |
| 1071 | kfree(ses); |
| 1072 | } |
| 1073 | |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 1074 | static void free_session(struct nfsd4_session *ses) |
Benny Halevy | 508dc6e | 2012-02-23 17:40:52 -0800 | [diff] [blame] | 1075 | { |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1076 | struct nfsd_net *nn = net_generic(ses->se_client->net, nfsd_net_id); |
| 1077 | |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1078 | lockdep_assert_held(&nn->client_lock); |
| 1079 | nfsd4_del_conns(ses); |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 1080 | nfsd4_put_drc_mem(&ses->se_fchannel); |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1081 | __free_session(ses); |
J. Bruce Fields | a827bcb | 2012-09-12 09:51:34 -0400 | [diff] [blame] | 1082 | } |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1083 | |
Fengguang Wu | 135ae82 | 2012-11-10 07:20:25 -0500 | [diff] [blame] | 1084 | static void init_session(struct svc_rqst *rqstp, struct nfsd4_session *new, struct nfs4_client *clp, struct nfsd4_create_session *cses) |
J. Bruce Fields | a827bcb | 2012-09-12 09:51:34 -0400 | [diff] [blame] | 1085 | { |
J. Bruce Fields | a827bcb | 2012-09-12 09:51:34 -0400 | [diff] [blame] | 1086 | int idx; |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 1087 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
J. Bruce Fields | a827bcb | 2012-09-12 09:51:34 -0400 | [diff] [blame] | 1088 | |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1089 | new->se_client = clp; |
| 1090 | gen_sessionid(new); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1091 | |
J. Bruce Fields | c766251 | 2010-06-06 18:12:14 -0400 | [diff] [blame] | 1092 | INIT_LIST_HEAD(&new->se_conns); |
| 1093 | |
J. Bruce Fields | ac7c46f | 2010-06-14 19:01:57 -0400 | [diff] [blame] | 1094 | new->se_cb_seq_nr = 1; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1095 | new->se_flags = cses->flags; |
J. Bruce Fields | 8b5ce5c | 2010-10-19 17:31:50 -0400 | [diff] [blame] | 1096 | new->se_cb_prog = cses->callback_prog; |
J. Bruce Fields | c6bb3ca | 2012-11-01 16:31:02 -0400 | [diff] [blame] | 1097 | new->se_cb_sec = cses->cb_sec; |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 1098 | atomic_set(&new->se_ref, 0); |
J. Bruce Fields | 5b6feee | 2010-09-27 17:12:05 -0400 | [diff] [blame] | 1099 | idx = hash_sessionid(&new->se_sessionid); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1100 | spin_lock(&nn->client_lock); |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 1101 | list_add(&new->se_hash, &nn->sessionid_hashtbl[idx]); |
J. Bruce Fields | 4c64937 | 2010-06-15 14:22:37 -0400 | [diff] [blame] | 1102 | spin_lock(&clp->cl_lock); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1103 | list_add(&new->se_perclnt, &clp->cl_sessions); |
J. Bruce Fields | 4c64937 | 2010-06-15 14:22:37 -0400 | [diff] [blame] | 1104 | spin_unlock(&clp->cl_lock); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1105 | spin_unlock(&nn->client_lock); |
Kinglong Mee | 60810e5 | 2014-01-01 00:35:47 +0800 | [diff] [blame] | 1106 | |
J. Bruce Fields | dcbeaa6 | 2010-06-15 17:25:45 -0400 | [diff] [blame] | 1107 | if (cses->flags & SESSION4_BACK_CHAN) { |
J. Bruce Fields | edd7678 | 2010-06-14 22:26:31 -0400 | [diff] [blame] | 1108 | struct sockaddr *sa = svc_addr(rqstp); |
J. Bruce Fields | dcbeaa6 | 2010-06-15 17:25:45 -0400 | [diff] [blame] | 1109 | /* |
| 1110 | * This is a little silly; with sessions there's no real |
| 1111 | * use for the callback address. Use the peer address |
| 1112 | * as a reasonable default for now, but consider fixing |
| 1113 | * the rpc client not to require an address in the |
| 1114 | * future: |
| 1115 | */ |
J. Bruce Fields | edd7678 | 2010-06-14 22:26:31 -0400 | [diff] [blame] | 1116 | rpc_copy_addr((struct sockaddr *)&clp->cl_cb_conn.cb_addr, sa); |
| 1117 | clp->cl_cb_conn.cb_addrlen = svc_addr_len(sa); |
J. Bruce Fields | edd7678 | 2010-06-14 22:26:31 -0400 | [diff] [blame] | 1118 | } |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1119 | } |
| 1120 | |
Benny Halevy | 9089f1b | 2010-05-12 00:12:26 +0300 | [diff] [blame] | 1121 | /* caller must hold client_lock */ |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1122 | static struct nfsd4_session * |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 1123 | find_in_sessionid_hashtbl(struct nfs4_sessionid *sessionid, struct net *net) |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1124 | { |
| 1125 | struct nfsd4_session *elem; |
| 1126 | int idx; |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 1127 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1128 | |
| 1129 | dump_sessionid(__func__, sessionid); |
| 1130 | idx = hash_sessionid(sessionid); |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1131 | /* Search in the appropriate list */ |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 1132 | list_for_each_entry(elem, &nn->sessionid_hashtbl[idx], se_hash) { |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1133 | if (!memcmp(elem->se_sessionid.data, sessionid->data, |
| 1134 | NFS4_MAX_SESSIONID_LEN)) { |
| 1135 | return elem; |
| 1136 | } |
| 1137 | } |
| 1138 | |
| 1139 | dprintk("%s: session not found\n", __func__); |
| 1140 | return NULL; |
| 1141 | } |
| 1142 | |
Benny Halevy | 9089f1b | 2010-05-12 00:12:26 +0300 | [diff] [blame] | 1143 | /* caller must hold client_lock */ |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 1144 | static void |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1145 | unhash_session(struct nfsd4_session *ses) |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 1146 | { |
| 1147 | list_del(&ses->se_hash); |
J. Bruce Fields | 4c64937 | 2010-06-15 14:22:37 -0400 | [diff] [blame] | 1148 | spin_lock(&ses->se_client->cl_lock); |
Andy Adamson | 7116ed6 | 2009-04-03 08:27:43 +0300 | [diff] [blame] | 1149 | list_del(&ses->se_perclnt); |
J. Bruce Fields | 4c64937 | 2010-06-15 14:22:37 -0400 | [diff] [blame] | 1150 | spin_unlock(&ses->se_client->cl_lock); |
Marc Eshel | 5282fd7 | 2009-04-03 08:27:52 +0300 | [diff] [blame] | 1151 | } |
| 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | /* SETCLIENTID and SETCLIENTID_CONFIRM Helper functions */ |
| 1154 | static int |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 1155 | STALE_CLIENTID(clientid_t *clid, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | { |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 1157 | if (clid->cl_boot == nn->boot_time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | return 0; |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 1159 | dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n", |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 1160 | clid->cl_boot, clid->cl_id, nn->boot_time); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | return 1; |
| 1162 | } |
| 1163 | |
| 1164 | /* |
| 1165 | * XXX Should we use a slab cache ? |
| 1166 | * This type of memory management is somewhat inefficient, but we use it |
| 1167 | * anyway since SETCLIENTID is not a common operation. |
| 1168 | */ |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1169 | static struct nfs4_client *alloc_client(struct xdr_netobj name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | { |
| 1171 | struct nfs4_client *clp; |
| 1172 | |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1173 | clp = kzalloc(sizeof(struct nfs4_client), GFP_KERNEL); |
| 1174 | if (clp == NULL) |
| 1175 | return NULL; |
Thomas Meyer | 67114fe | 2011-11-17 23:43:40 +0100 | [diff] [blame] | 1176 | clp->cl_name.data = kmemdup(name.data, name.len, GFP_KERNEL); |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1177 | if (clp->cl_name.data == NULL) { |
| 1178 | kfree(clp); |
| 1179 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | } |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1181 | clp->cl_name.len = name.len; |
Trond Myklebust | 5694c93 | 2014-04-18 14:43:56 -0400 | [diff] [blame] | 1182 | INIT_LIST_HEAD(&clp->cl_sessions); |
| 1183 | idr_init(&clp->cl_stateids); |
| 1184 | atomic_set(&clp->cl_refcount, 0); |
| 1185 | clp->cl_cb_state = NFSD4_CB_UNKNOWN; |
| 1186 | INIT_LIST_HEAD(&clp->cl_idhash); |
| 1187 | INIT_LIST_HEAD(&clp->cl_openowners); |
| 1188 | INIT_LIST_HEAD(&clp->cl_delegations); |
| 1189 | INIT_LIST_HEAD(&clp->cl_lru); |
| 1190 | INIT_LIST_HEAD(&clp->cl_callbacks); |
| 1191 | INIT_LIST_HEAD(&clp->cl_revoked); |
| 1192 | spin_lock_init(&clp->cl_lock); |
| 1193 | rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | return clp; |
| 1195 | } |
| 1196 | |
Trond Myklebust | 4dd86e15 | 2014-04-18 14:43:58 -0400 | [diff] [blame] | 1197 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | free_client(struct nfs4_client *clp) |
| 1199 | { |
Stanislav Kinsbursky | bca0ec6 | 2013-01-09 12:38:34 +0300 | [diff] [blame] | 1200 | struct nfsd_net __maybe_unused *nn = net_generic(clp->net, nfsd_net_id); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1201 | |
| 1202 | lockdep_assert_held(&nn->client_lock); |
J. Bruce Fields | 792c95d | 2010-10-12 19:55:25 -0400 | [diff] [blame] | 1203 | while (!list_empty(&clp->cl_sessions)) { |
| 1204 | struct nfsd4_session *ses; |
| 1205 | ses = list_entry(clp->cl_sessions.next, struct nfsd4_session, |
| 1206 | se_perclnt); |
| 1207 | list_del(&ses->se_perclnt); |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 1208 | WARN_ON_ONCE(atomic_read(&ses->se_ref)); |
| 1209 | free_session(ses); |
J. Bruce Fields | 792c95d | 2010-10-12 19:55:25 -0400 | [diff] [blame] | 1210 | } |
Trond Myklebust | 4cb57e3 | 2014-04-18 14:43:57 -0400 | [diff] [blame] | 1211 | rpc_destroy_wait_queue(&clp->cl_cb_waitq); |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1212 | free_svc_cred(&clp->cl_cred); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | kfree(clp->cl_name.data); |
majianpeng | 2d32b29 | 2013-01-29 13:16:06 +0800 | [diff] [blame] | 1214 | idr_destroy(&clp->cl_stateids); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | kfree(clp); |
| 1216 | } |
| 1217 | |
Benny Halevy | 84d38ac | 2010-05-12 00:13:16 +0300 | [diff] [blame] | 1218 | /* must be called under the client_lock */ |
| 1219 | static inline void |
| 1220 | unhash_client_locked(struct nfs4_client *clp) |
| 1221 | { |
J. Bruce Fields | 792c95d | 2010-10-12 19:55:25 -0400 | [diff] [blame] | 1222 | struct nfsd4_session *ses; |
| 1223 | |
Benny Halevy | 84d38ac | 2010-05-12 00:13:16 +0300 | [diff] [blame] | 1224 | list_del(&clp->cl_lru); |
J. Bruce Fields | 4c64937 | 2010-06-15 14:22:37 -0400 | [diff] [blame] | 1225 | spin_lock(&clp->cl_lock); |
J. Bruce Fields | 792c95d | 2010-10-12 19:55:25 -0400 | [diff] [blame] | 1226 | list_for_each_entry(ses, &clp->cl_sessions, se_perclnt) |
| 1227 | list_del_init(&ses->se_hash); |
J. Bruce Fields | 4c64937 | 2010-06-15 14:22:37 -0400 | [diff] [blame] | 1228 | spin_unlock(&clp->cl_lock); |
Benny Halevy | 84d38ac | 2010-05-12 00:13:16 +0300 | [diff] [blame] | 1229 | } |
| 1230 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | static void |
J. Bruce Fields | 0d22f68 | 2012-09-26 11:36:16 -0400 | [diff] [blame] | 1232 | destroy_client(struct nfs4_client *clp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 1234 | struct nfs4_openowner *oo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | struct nfs4_delegation *dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | struct list_head reaplist; |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 1237 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | INIT_LIST_HEAD(&reaplist); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 1240 | spin_lock(&state_lock); |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 1241 | while (!list_empty(&clp->cl_delegations)) { |
| 1242 | dp = list_entry(clp->cl_delegations.next, struct nfs4_delegation, dl_perclnt); |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 1243 | list_del_init(&dp->dl_perclnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | list_move(&dp->dl_recall_lru, &reaplist); |
| 1245 | } |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 1246 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | while (!list_empty(&reaplist)) { |
| 1248 | dp = list_entry(reaplist.next, struct nfs4_delegation, dl_recall_lru); |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 1249 | destroy_delegation(dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | } |
Benny Halevy | 956c4fe | 2013-10-29 11:39:12 +0200 | [diff] [blame] | 1251 | list_splice_init(&clp->cl_revoked, &reaplist); |
| 1252 | while (!list_empty(&reaplist)) { |
| 1253 | dp = list_entry(reaplist.next, struct nfs4_delegation, dl_recall_lru); |
| 1254 | destroy_revoked_delegation(dp); |
| 1255 | } |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 1256 | while (!list_empty(&clp->cl_openowners)) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 1257 | oo = list_entry(clp->cl_openowners.next, struct nfs4_openowner, oo_perclient); |
| 1258 | release_openowner(oo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | } |
J. Bruce Fields | 6ff8da0 | 2010-06-04 20:04:45 -0400 | [diff] [blame] | 1260 | nfsd4_shutdown_callback(clp); |
J. Bruce Fields | 2bf2387 | 2010-03-08 12:37:27 -0500 | [diff] [blame] | 1261 | if (clp->cl_cb_conn.cb_xprt) |
| 1262 | svc_xprt_put(clp->cl_cb_conn.cb_xprt); |
Benny Halevy | 84d38ac | 2010-05-12 00:13:16 +0300 | [diff] [blame] | 1263 | list_del(&clp->cl_idhash); |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1264 | if (test_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags)) |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 1265 | rb_erase(&clp->cl_namenode, &nn->conf_name_tree); |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1266 | else |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 1267 | rb_erase(&clp->cl_namenode, &nn->unconf_name_tree); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1268 | spin_lock(&nn->client_lock); |
Benny Halevy | 84d38ac | 2010-05-12 00:13:16 +0300 | [diff] [blame] | 1269 | unhash_client_locked(clp); |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 1270 | WARN_ON_ONCE(atomic_read(&clp->cl_refcount)); |
| 1271 | free_client(clp); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1272 | spin_unlock(&nn->client_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | } |
| 1274 | |
J. Bruce Fields | 0d22f68 | 2012-09-26 11:36:16 -0400 | [diff] [blame] | 1275 | static void expire_client(struct nfs4_client *clp) |
| 1276 | { |
| 1277 | nfsd4_client_record_remove(clp); |
| 1278 | destroy_client(clp); |
| 1279 | } |
| 1280 | |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1281 | static void copy_verf(struct nfs4_client *target, nfs4_verifier *source) |
| 1282 | { |
| 1283 | memcpy(target->cl_verifier.data, source->data, |
| 1284 | sizeof(target->cl_verifier.data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | } |
| 1286 | |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1287 | static void copy_clid(struct nfs4_client *target, struct nfs4_client *source) |
| 1288 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | target->cl_clientid.cl_boot = source->cl_clientid.cl_boot; |
| 1290 | target->cl_clientid.cl_id = source->cl_clientid.cl_id; |
| 1291 | } |
| 1292 | |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1293 | static int copy_cred(struct svc_cred *target, struct svc_cred *source) |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1294 | { |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1295 | if (source->cr_principal) { |
| 1296 | target->cr_principal = |
| 1297 | kstrdup(source->cr_principal, GFP_KERNEL); |
| 1298 | if (target->cr_principal == NULL) |
| 1299 | return -ENOMEM; |
| 1300 | } else |
| 1301 | target->cr_principal = NULL; |
J. Bruce Fields | d5497fc | 2012-05-14 22:06:49 -0400 | [diff] [blame] | 1302 | target->cr_flavor = source->cr_flavor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | target->cr_uid = source->cr_uid; |
| 1304 | target->cr_gid = source->cr_gid; |
| 1305 | target->cr_group_info = source->cr_group_info; |
| 1306 | get_group_info(target->cr_group_info); |
J. Bruce Fields | 0dc1531 | 2013-05-14 16:07:13 -0400 | [diff] [blame] | 1307 | target->cr_gss_mech = source->cr_gss_mech; |
| 1308 | if (source->cr_gss_mech) |
| 1309 | gss_mech_get(source->cr_gss_mech); |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1310 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | } |
| 1312 | |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1313 | static long long |
| 1314 | compare_blob(const struct xdr_netobj *o1, const struct xdr_netobj *o2) |
| 1315 | { |
| 1316 | long long res; |
| 1317 | |
| 1318 | res = o1->len - o2->len; |
| 1319 | if (res) |
| 1320 | return res; |
| 1321 | return (long long)memcmp(o1->data, o2->data, o1->len); |
| 1322 | } |
| 1323 | |
J. Bruce Fields | 35bba9a | 2007-11-21 22:07:08 -0500 | [diff] [blame] | 1324 | static int same_name(const char *n1, const char *n2) |
J. Bruce Fields | 599e0a2 | 2007-07-26 17:04:54 -0400 | [diff] [blame] | 1325 | { |
NeilBrown | a55370a | 2005-06-23 22:03:52 -0700 | [diff] [blame] | 1326 | return 0 == memcmp(n1, n2, HEXDIR_LEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | } |
| 1328 | |
| 1329 | static int |
J. Bruce Fields | 599e0a2 | 2007-07-26 17:04:54 -0400 | [diff] [blame] | 1330 | same_verf(nfs4_verifier *v1, nfs4_verifier *v2) |
| 1331 | { |
| 1332 | return 0 == memcmp(v1->data, v2->data, sizeof(v1->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | } |
| 1334 | |
| 1335 | static int |
J. Bruce Fields | 599e0a2 | 2007-07-26 17:04:54 -0400 | [diff] [blame] | 1336 | same_clid(clientid_t *cl1, clientid_t *cl2) |
| 1337 | { |
| 1338 | return (cl1->cl_boot == cl2->cl_boot) && (cl1->cl_id == cl2->cl_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | } |
| 1340 | |
J. Bruce Fields | 8fbba96 | 2012-05-14 21:20:54 -0400 | [diff] [blame] | 1341 | static bool groups_equal(struct group_info *g1, struct group_info *g2) |
| 1342 | { |
| 1343 | int i; |
| 1344 | |
| 1345 | if (g1->ngroups != g2->ngroups) |
| 1346 | return false; |
| 1347 | for (i=0; i<g1->ngroups; i++) |
Eric W. Biederman | 6fab877 | 2013-02-02 06:53:11 -0800 | [diff] [blame] | 1348 | if (!gid_eq(GROUP_AT(g1, i), GROUP_AT(g2, i))) |
J. Bruce Fields | 8fbba96 | 2012-05-14 21:20:54 -0400 | [diff] [blame] | 1349 | return false; |
| 1350 | return true; |
| 1351 | } |
| 1352 | |
J. Bruce Fields | 68eb350 | 2012-08-21 12:48:30 -0400 | [diff] [blame] | 1353 | /* |
| 1354 | * RFC 3530 language requires clid_inuse be returned when the |
| 1355 | * "principal" associated with a requests differs from that previously |
| 1356 | * used. We use uid, gid's, and gss principal string as our best |
| 1357 | * approximation. We also don't want to allow non-gss use of a client |
| 1358 | * established using gss: in theory cr_principal should catch that |
| 1359 | * change, but in practice cr_principal can be null even in the gss case |
| 1360 | * since gssd doesn't always pass down a principal string. |
| 1361 | */ |
| 1362 | static bool is_gss_cred(struct svc_cred *cr) |
| 1363 | { |
| 1364 | /* Is cr_flavor one of the gss "pseudoflavors"?: */ |
| 1365 | return (cr->cr_flavor > RPC_AUTH_MAXFLAVOR); |
| 1366 | } |
| 1367 | |
| 1368 | |
Vivek Trivedi | 5559b50 | 2012-07-24 21:18:20 +0530 | [diff] [blame] | 1369 | static bool |
J. Bruce Fields | 599e0a2 | 2007-07-26 17:04:54 -0400 | [diff] [blame] | 1370 | same_creds(struct svc_cred *cr1, struct svc_cred *cr2) |
| 1371 | { |
J. Bruce Fields | 68eb350 | 2012-08-21 12:48:30 -0400 | [diff] [blame] | 1372 | if ((is_gss_cred(cr1) != is_gss_cred(cr2)) |
Eric W. Biederman | 6fab877 | 2013-02-02 06:53:11 -0800 | [diff] [blame] | 1373 | || (!uid_eq(cr1->cr_uid, cr2->cr_uid)) |
| 1374 | || (!gid_eq(cr1->cr_gid, cr2->cr_gid)) |
J. Bruce Fields | 8fbba96 | 2012-05-14 21:20:54 -0400 | [diff] [blame] | 1375 | || !groups_equal(cr1->cr_group_info, cr2->cr_group_info)) |
| 1376 | return false; |
| 1377 | if (cr1->cr_principal == cr2->cr_principal) |
| 1378 | return true; |
| 1379 | if (!cr1->cr_principal || !cr2->cr_principal) |
| 1380 | return false; |
Vivek Trivedi | 5559b50 | 2012-07-24 21:18:20 +0530 | [diff] [blame] | 1381 | return 0 == strcmp(cr1->cr_principal, cr2->cr_principal); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | } |
| 1383 | |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 1384 | static bool svc_rqst_integrity_protected(struct svc_rqst *rqstp) |
| 1385 | { |
| 1386 | struct svc_cred *cr = &rqstp->rq_cred; |
| 1387 | u32 service; |
| 1388 | |
J. Bruce Fields | c472059 | 2013-08-07 11:41:49 -0400 | [diff] [blame] | 1389 | if (!cr->cr_gss_mech) |
| 1390 | return false; |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 1391 | service = gss_pseudoflavor_to_service(cr->cr_gss_mech, cr->cr_flavor); |
| 1392 | return service == RPC_GSS_SVC_INTEGRITY || |
| 1393 | service == RPC_GSS_SVC_PRIVACY; |
| 1394 | } |
| 1395 | |
| 1396 | static bool mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp) |
| 1397 | { |
| 1398 | struct svc_cred *cr = &rqstp->rq_cred; |
| 1399 | |
| 1400 | if (!cl->cl_mach_cred) |
| 1401 | return true; |
| 1402 | if (cl->cl_cred.cr_gss_mech != cr->cr_gss_mech) |
| 1403 | return false; |
| 1404 | if (!svc_rqst_integrity_protected(rqstp)) |
| 1405 | return false; |
| 1406 | if (!cr->cr_principal) |
| 1407 | return false; |
| 1408 | return 0 == strcmp(cl->cl_cred.cr_principal, cr->cr_principal); |
| 1409 | } |
| 1410 | |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 1411 | static void gen_clid(struct nfs4_client *clp, struct nfsd_net *nn) |
J. Bruce Fields | 5ec7b46 | 2007-11-21 21:58:56 -0500 | [diff] [blame] | 1412 | { |
| 1413 | static u32 current_clientid = 1; |
| 1414 | |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 1415 | clp->cl_clientid.cl_boot = nn->boot_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | clp->cl_clientid.cl_id = current_clientid++; |
| 1417 | } |
| 1418 | |
J. Bruce Fields | deda2fa | 2007-11-19 20:31:04 -0500 | [diff] [blame] | 1419 | static void gen_confirm(struct nfs4_client *clp) |
| 1420 | { |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 1421 | __be32 verf[2]; |
J. Bruce Fields | deda2fa | 2007-11-19 20:31:04 -0500 | [diff] [blame] | 1422 | static u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 1424 | verf[0] = (__be32)get_seconds(); |
| 1425 | verf[1] = (__be32)i++; |
| 1426 | memcpy(clp->cl_confirm.data, verf, sizeof(clp->cl_confirm.data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | } |
| 1428 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 1429 | static struct nfs4_stid *find_stateid(struct nfs4_client *cl, stateid_t *t) |
J. Bruce Fields | 4581d14 | 2011-09-06 14:56:09 -0400 | [diff] [blame] | 1430 | { |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 1431 | struct nfs4_stid *ret; |
| 1432 | |
| 1433 | ret = idr_find(&cl->cl_stateids, t->si_opaque.so_id); |
| 1434 | if (!ret || !ret->sc_type) |
| 1435 | return NULL; |
| 1436 | return ret; |
J. Bruce Fields | 4d71ab8 | 2011-09-06 16:48:57 -0400 | [diff] [blame] | 1437 | } |
| 1438 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 1439 | static struct nfs4_stid *find_stateid_by_type(struct nfs4_client *cl, stateid_t *t, char typemask) |
J. Bruce Fields | f459e45 | 2011-09-09 09:06:12 -0400 | [diff] [blame] | 1440 | { |
| 1441 | struct nfs4_stid *s; |
| 1442 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 1443 | s = find_stateid(cl, t); |
J. Bruce Fields | f459e45 | 2011-09-09 09:06:12 -0400 | [diff] [blame] | 1444 | if (!s) |
| 1445 | return NULL; |
| 1446 | if (typemask & s->sc_type) |
J. Bruce Fields | 4d71ab8 | 2011-09-06 16:48:57 -0400 | [diff] [blame] | 1447 | return s; |
J. Bruce Fields | 4581d14 | 2011-09-06 14:56:09 -0400 | [diff] [blame] | 1448 | return NULL; |
| 1449 | } |
| 1450 | |
Jeff Layton | 2216d44 | 2012-11-12 15:00:57 -0500 | [diff] [blame] | 1451 | static struct nfs4_client *create_client(struct xdr_netobj name, |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1452 | struct svc_rqst *rqstp, nfs4_verifier *verf) |
| 1453 | { |
| 1454 | struct nfs4_client *clp; |
| 1455 | struct sockaddr *sa = svc_addr(rqstp); |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1456 | int ret; |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 1457 | struct net *net = SVC_NET(rqstp); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1458 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1459 | |
| 1460 | clp = alloc_client(name); |
| 1461 | if (clp == NULL) |
| 1462 | return NULL; |
| 1463 | |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1464 | ret = copy_cred(&clp->cl_cred, &rqstp->rq_cred); |
| 1465 | if (ret) { |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1466 | spin_lock(&nn->client_lock); |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1467 | free_client(clp); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 1468 | spin_unlock(&nn->client_lock); |
J. Bruce Fields | 03a4e1f | 2012-05-14 19:55:22 -0400 | [diff] [blame] | 1469 | return NULL; |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1470 | } |
J. Bruce Fields | 5772515 | 2012-11-05 15:10:26 -0500 | [diff] [blame] | 1471 | nfsd4_init_callback(&clp->cl_cb_null); |
Benny Halevy | 07cd490 | 2010-05-12 00:13:41 +0300 | [diff] [blame] | 1472 | clp->cl_time = get_seconds(); |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1473 | clear_bit(0, &clp->cl_cb_slot_busy); |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1474 | copy_verf(clp, verf); |
| 1475 | rpc_copy_addr((struct sockaddr *) &clp->cl_addr, sa); |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1476 | gen_confirm(clp); |
J. Bruce Fields | edd7678 | 2010-06-14 22:26:31 -0400 | [diff] [blame] | 1477 | clp->cl_cb_session = NULL; |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 1478 | clp->net = net; |
Ricardo Labiaga | b09333c | 2009-09-10 12:27:34 +0300 | [diff] [blame] | 1479 | return clp; |
| 1480 | } |
| 1481 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 1482 | static void |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1483 | add_clp_to_name_tree(struct nfs4_client *new_clp, struct rb_root *root) |
| 1484 | { |
| 1485 | struct rb_node **new = &(root->rb_node), *parent = NULL; |
| 1486 | struct nfs4_client *clp; |
| 1487 | |
| 1488 | while (*new) { |
| 1489 | clp = rb_entry(*new, struct nfs4_client, cl_namenode); |
| 1490 | parent = *new; |
| 1491 | |
| 1492 | if (compare_blob(&clp->cl_name, &new_clp->cl_name) > 0) |
| 1493 | new = &((*new)->rb_left); |
| 1494 | else |
| 1495 | new = &((*new)->rb_right); |
| 1496 | } |
| 1497 | |
| 1498 | rb_link_node(&new_clp->cl_namenode, parent, new); |
| 1499 | rb_insert_color(&new_clp->cl_namenode, root); |
| 1500 | } |
| 1501 | |
| 1502 | static struct nfs4_client * |
| 1503 | find_clp_in_name_tree(struct xdr_netobj *name, struct rb_root *root) |
| 1504 | { |
| 1505 | long long cmp; |
| 1506 | struct rb_node *node = root->rb_node; |
| 1507 | struct nfs4_client *clp; |
| 1508 | |
| 1509 | while (node) { |
| 1510 | clp = rb_entry(node, struct nfs4_client, cl_namenode); |
| 1511 | cmp = compare_blob(&clp->cl_name, name); |
| 1512 | if (cmp > 0) |
| 1513 | node = node->rb_left; |
| 1514 | else if (cmp < 0) |
| 1515 | node = node->rb_right; |
| 1516 | else |
| 1517 | return clp; |
| 1518 | } |
| 1519 | return NULL; |
| 1520 | } |
| 1521 | |
| 1522 | static void |
| 1523 | add_to_unconfirmed(struct nfs4_client *clp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | { |
| 1525 | unsigned int idhashval; |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 1526 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1528 | clear_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags); |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 1529 | add_clp_to_name_tree(clp, &nn->unconf_name_tree); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | idhashval = clientid_hashval(clp->cl_clientid.cl_id); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 1531 | list_add(&clp->cl_idhash, &nn->unconf_id_hashtbl[idhashval]); |
Benny Halevy | 36acb66 | 2010-05-12 00:13:04 +0300 | [diff] [blame] | 1532 | renew_client(clp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | } |
| 1534 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 1535 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | move_to_confirmed(struct nfs4_client *clp) |
| 1537 | { |
| 1538 | unsigned int idhashval = clientid_hashval(clp->cl_clientid.cl_id); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 1539 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | |
| 1541 | dprintk("NFSD: move_to_confirm nfs4_client %p\n", clp); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 1542 | list_move(&clp->cl_idhash, &nn->conf_id_hashtbl[idhashval]); |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 1543 | rb_erase(&clp->cl_namenode, &nn->unconf_name_tree); |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 1544 | add_clp_to_name_tree(clp, &nn->conf_name_tree); |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1545 | set_bit(NFSD4_CLIENT_CONFIRMED, &clp->cl_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | renew_client(clp); |
| 1547 | } |
| 1548 | |
| 1549 | static struct nfs4_client * |
J. Bruce Fields | bfa85e83 | 2013-03-14 18:24:52 -0400 | [diff] [blame] | 1550 | find_client_in_id_table(struct list_head *tbl, clientid_t *clid, bool sessions) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | { |
| 1552 | struct nfs4_client *clp; |
| 1553 | unsigned int idhashval = clientid_hashval(clid->cl_id); |
| 1554 | |
J. Bruce Fields | bfa85e83 | 2013-03-14 18:24:52 -0400 | [diff] [blame] | 1555 | list_for_each_entry(clp, &tbl[idhashval], cl_idhash) { |
J. Bruce Fields | a50d2ad | 2011-10-12 16:24:27 -0400 | [diff] [blame] | 1556 | if (same_clid(&clp->cl_clientid, clid)) { |
J. Bruce Fields | d15c077 | 2012-09-13 16:19:31 -0400 | [diff] [blame] | 1557 | if ((bool)clp->cl_minorversion != sessions) |
| 1558 | return NULL; |
J. Bruce Fields | a50d2ad | 2011-10-12 16:24:27 -0400 | [diff] [blame] | 1559 | renew_client(clp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | return clp; |
J. Bruce Fields | a50d2ad | 2011-10-12 16:24:27 -0400 | [diff] [blame] | 1561 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | } |
| 1563 | return NULL; |
| 1564 | } |
| 1565 | |
| 1566 | static struct nfs4_client * |
J. Bruce Fields | bfa85e83 | 2013-03-14 18:24:52 -0400 | [diff] [blame] | 1567 | find_confirmed_client(clientid_t *clid, bool sessions, struct nfsd_net *nn) |
| 1568 | { |
| 1569 | struct list_head *tbl = nn->conf_id_hashtbl; |
| 1570 | |
| 1571 | return find_client_in_id_table(tbl, clid, sessions); |
| 1572 | } |
| 1573 | |
| 1574 | static struct nfs4_client * |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 1575 | find_unconfirmed_client(clientid_t *clid, bool sessions, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | { |
J. Bruce Fields | bfa85e83 | 2013-03-14 18:24:52 -0400 | [diff] [blame] | 1577 | struct list_head *tbl = nn->unconf_id_hashtbl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | |
J. Bruce Fields | bfa85e83 | 2013-03-14 18:24:52 -0400 | [diff] [blame] | 1579 | return find_client_in_id_table(tbl, clid, sessions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | } |
| 1581 | |
J. Bruce Fields | 6e5f15c | 2010-11-24 17:17:34 -0500 | [diff] [blame] | 1582 | static bool clp_used_exchangeid(struct nfs4_client *clp) |
Andy Adamson | a1bcecd | 2009-04-03 08:28:05 +0300 | [diff] [blame] | 1583 | { |
J. Bruce Fields | 6e5f15c | 2010-11-24 17:17:34 -0500 | [diff] [blame] | 1584 | return clp->cl_exchange_flags != 0; |
J. Bruce Fields | e203d50 | 2010-11-24 17:30:54 -0500 | [diff] [blame] | 1585 | } |
Andy Adamson | a1bcecd | 2009-04-03 08:28:05 +0300 | [diff] [blame] | 1586 | |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 1587 | static struct nfs4_client * |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 1588 | find_confirmed_client_by_name(struct xdr_netobj *name, struct nfsd_net *nn) |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 1589 | { |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 1590 | return find_clp_in_name_tree(name, &nn->conf_name_tree); |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 1591 | } |
| 1592 | |
| 1593 | static struct nfs4_client * |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 1594 | find_unconfirmed_client_by_name(struct xdr_netobj *name, struct nfsd_net *nn) |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 1595 | { |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 1596 | return find_clp_in_name_tree(name, &nn->unconf_name_tree); |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 1597 | } |
| 1598 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 1599 | static void |
Takuma Umeya | 6f3d772 | 2010-12-15 14:09:01 +0900 | [diff] [blame] | 1600 | gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, struct svc_rqst *rqstp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | { |
J. Bruce Fields | 07263f1 | 2010-05-31 19:09:40 -0400 | [diff] [blame] | 1602 | struct nfs4_cb_conn *conn = &clp->cl_cb_conn; |
Takuma Umeya | 6f3d772 | 2010-12-15 14:09:01 +0900 | [diff] [blame] | 1603 | struct sockaddr *sa = svc_addr(rqstp); |
| 1604 | u32 scopeid = rpc_get_scope_id(sa); |
Jeff Layton | 7077ecb | 2009-08-14 12:57:58 -0400 | [diff] [blame] | 1605 | unsigned short expected_family; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | |
Jeff Layton | 7077ecb | 2009-08-14 12:57:58 -0400 | [diff] [blame] | 1607 | /* Currently, we only support tcp and tcp6 for the callback channel */ |
| 1608 | if (se->se_callback_netid_len == 3 && |
| 1609 | !memcmp(se->se_callback_netid_val, "tcp", 3)) |
| 1610 | expected_family = AF_INET; |
| 1611 | else if (se->se_callback_netid_len == 4 && |
| 1612 | !memcmp(se->se_callback_netid_val, "tcp6", 4)) |
| 1613 | expected_family = AF_INET6; |
| 1614 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | goto out_err; |
| 1616 | |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 1617 | conn->cb_addrlen = rpc_uaddr2sockaddr(clp->net, se->se_callback_addr_val, |
Jeff Layton | aa9a4ec | 2009-08-14 12:57:57 -0400 | [diff] [blame] | 1618 | se->se_callback_addr_len, |
J. Bruce Fields | 07263f1 | 2010-05-31 19:09:40 -0400 | [diff] [blame] | 1619 | (struct sockaddr *)&conn->cb_addr, |
| 1620 | sizeof(conn->cb_addr)); |
Jeff Layton | aa9a4ec | 2009-08-14 12:57:57 -0400 | [diff] [blame] | 1621 | |
J. Bruce Fields | 07263f1 | 2010-05-31 19:09:40 -0400 | [diff] [blame] | 1622 | if (!conn->cb_addrlen || conn->cb_addr.ss_family != expected_family) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | goto out_err; |
Jeff Layton | aa9a4ec | 2009-08-14 12:57:57 -0400 | [diff] [blame] | 1624 | |
J. Bruce Fields | 07263f1 | 2010-05-31 19:09:40 -0400 | [diff] [blame] | 1625 | if (conn->cb_addr.ss_family == AF_INET6) |
| 1626 | ((struct sockaddr_in6 *)&conn->cb_addr)->sin6_scope_id = scopeid; |
Jeff Layton | fbf4665 | 2009-08-14 12:57:59 -0400 | [diff] [blame] | 1627 | |
J. Bruce Fields | 07263f1 | 2010-05-31 19:09:40 -0400 | [diff] [blame] | 1628 | conn->cb_prog = se->se_callback_prog; |
| 1629 | conn->cb_ident = se->se_callback_ident; |
Mi Jinlong | 849a1cf | 2011-08-30 17:18:41 +0800 | [diff] [blame] | 1630 | memcpy(&conn->cb_saddr, &rqstp->rq_daddr, rqstp->rq_daddrlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | return; |
| 1632 | out_err: |
J. Bruce Fields | 07263f1 | 2010-05-31 19:09:40 -0400 | [diff] [blame] | 1633 | conn->cb_addr.ss_family = AF_UNSPEC; |
| 1634 | conn->cb_addrlen = 0; |
Neil Brown | 849823c | 2005-09-13 01:25:36 -0700 | [diff] [blame] | 1635 | dprintk(KERN_INFO "NFSD: this client (clientid %08x/%08x) " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | "will not receive delegations\n", |
| 1637 | clp->cl_clientid.cl_boot, clp->cl_clientid.cl_id); |
| 1638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | return; |
| 1640 | } |
| 1641 | |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1642 | /* |
J. Bruce Fields | 067e1ac | 2014-03-21 17:26:44 -0400 | [diff] [blame] | 1643 | * Cache a reply. nfsd4_check_resp_size() has bounded the cache size. |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1644 | */ |
| 1645 | void |
| 1646 | nfsd4_store_cache_entry(struct nfsd4_compoundres *resp) |
| 1647 | { |
J. Bruce Fields | f523601 | 2014-03-21 17:57:57 -0400 | [diff] [blame] | 1648 | struct xdr_buf *buf = resp->xdr.buf; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1649 | struct nfsd4_slot *slot = resp->cstate.slot; |
| 1650 | unsigned int base; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1651 | |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1652 | dprintk("--> %s slot %p\n", __func__, slot); |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1653 | |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1654 | slot->sl_opcnt = resp->opcnt; |
| 1655 | slot->sl_status = resp->cstate.status; |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 1656 | |
J. Bruce Fields | bf5c43c | 2012-02-13 16:56:19 -0500 | [diff] [blame] | 1657 | slot->sl_flags |= NFSD4_SLOT_INITIALIZED; |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 1658 | if (nfsd4_not_cached(resp)) { |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1659 | slot->sl_datalen = 0; |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 1660 | return; |
| 1661 | } |
J. Bruce Fields | f523601 | 2014-03-21 17:57:57 -0400 | [diff] [blame] | 1662 | base = resp->cstate.data_offset; |
| 1663 | slot->sl_datalen = buf->len - base; |
| 1664 | if (read_bytes_from_xdr_buf(buf, base, slot->sl_data, slot->sl_datalen)) |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1665 | WARN("%s: sessions DRC could not cache compound\n", __func__); |
| 1666 | return; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1667 | } |
| 1668 | |
| 1669 | /* |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1670 | * Encode the replay sequence operation from the slot values. |
| 1671 | * If cachethis is FALSE encode the uncached rep error on the next |
| 1672 | * operation which sets resp->p and increments resp->opcnt for |
| 1673 | * nfs4svc_encode_compoundres. |
| 1674 | * |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1675 | */ |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1676 | static __be32 |
| 1677 | nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args, |
| 1678 | struct nfsd4_compoundres *resp) |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1679 | { |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1680 | struct nfsd4_op *op; |
| 1681 | struct nfsd4_slot *slot = resp->cstate.slot; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1682 | |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1683 | /* Encode the replayed sequence operation */ |
| 1684 | op = &args->ops[resp->opcnt - 1]; |
| 1685 | nfsd4_encode_operation(resp, op); |
| 1686 | |
| 1687 | /* Return nfserr_retry_uncached_rep in next operation. */ |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 1688 | if (args->opcnt > 1 && !(slot->sl_flags & NFSD4_SLOT_CACHETHIS)) { |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1689 | op = &args->ops[resp->opcnt++]; |
| 1690 | op->status = nfserr_retry_uncached_rep; |
| 1691 | nfsd4_encode_operation(resp, op); |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1692 | } |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1693 | return op->status; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1694 | } |
| 1695 | |
| 1696 | /* |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1697 | * The sequence operation is not cached because we can use the slot and |
| 1698 | * session values. |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1699 | */ |
J. Bruce Fields | 3ca2eb9 | 2014-03-21 12:04:21 -0400 | [diff] [blame] | 1700 | static __be32 |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 1701 | nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp, |
| 1702 | struct nfsd4_sequence *seq) |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1703 | { |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1704 | struct nfsd4_slot *slot = resp->cstate.slot; |
J. Bruce Fields | f523601 | 2014-03-21 17:57:57 -0400 | [diff] [blame] | 1705 | struct xdr_stream *xdr = &resp->xdr; |
| 1706 | __be32 *p; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1707 | __be32 status; |
| 1708 | |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1709 | dprintk("--> %s slot %p\n", __func__, slot); |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1710 | |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1711 | status = nfsd4_enc_sequence_replay(resp->rqstp->rq_argp, resp); |
J. Bruce Fields | 0da7b19 | 2014-03-21 11:43:34 -0400 | [diff] [blame] | 1712 | if (status) |
Andy Adamson | abfabf8 | 2009-07-23 19:02:18 -0400 | [diff] [blame] | 1713 | return status; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1714 | |
J. Bruce Fields | f523601 | 2014-03-21 17:57:57 -0400 | [diff] [blame] | 1715 | p = xdr_reserve_space(xdr, slot->sl_datalen); |
| 1716 | if (!p) { |
| 1717 | WARN_ON_ONCE(1); |
| 1718 | return nfserr_serverfault; |
| 1719 | } |
| 1720 | xdr_encode_opaque_fixed(p, slot->sl_data, slot->sl_datalen); |
| 1721 | xdr_commit_encode(xdr); |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1722 | |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 1723 | resp->opcnt = slot->sl_opcnt; |
J. Bruce Fields | f523601 | 2014-03-21 17:57:57 -0400 | [diff] [blame] | 1724 | return slot->sl_status; |
Andy Adamson | 074fe89 | 2009-04-03 08:28:15 +0300 | [diff] [blame] | 1725 | } |
| 1726 | |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1727 | /* |
| 1728 | * Set the exchange_id flags returned by the server. |
| 1729 | */ |
| 1730 | static void |
| 1731 | nfsd4_set_ex_flags(struct nfs4_client *new, struct nfsd4_exchange_id *clid) |
| 1732 | { |
| 1733 | /* pNFS is not supported */ |
| 1734 | new->cl_exchange_flags |= EXCHGID4_FLAG_USE_NON_PNFS; |
| 1735 | |
| 1736 | /* Referrals are supported, Migration is not. */ |
| 1737 | new->cl_exchange_flags |= EXCHGID4_FLAG_SUPP_MOVED_REFER; |
| 1738 | |
| 1739 | /* set the wire flags to return to client. */ |
| 1740 | clid->flags = new->cl_exchange_flags; |
| 1741 | } |
| 1742 | |
J. Bruce Fields | 631fc9e | 2012-05-14 15:57:23 -0400 | [diff] [blame] | 1743 | static bool client_has_state(struct nfs4_client *clp) |
| 1744 | { |
| 1745 | /* |
| 1746 | * Note clp->cl_openowners check isn't quite right: there's no |
| 1747 | * need to count owners without stateid's. |
| 1748 | * |
| 1749 | * Also note we should probably be using this in 4.0 case too. |
| 1750 | */ |
J. Bruce Fields | 6eccece | 2012-05-29 16:37:44 -0400 | [diff] [blame] | 1751 | return !list_empty(&clp->cl_openowners) |
| 1752 | || !list_empty(&clp->cl_delegations) |
| 1753 | || !list_empty(&clp->cl_sessions); |
J. Bruce Fields | 631fc9e | 2012-05-14 15:57:23 -0400 | [diff] [blame] | 1754 | } |
| 1755 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1756 | __be32 |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 1757 | nfsd4_exchange_id(struct svc_rqst *rqstp, |
| 1758 | struct nfsd4_compound_state *cstate, |
| 1759 | struct nfsd4_exchange_id *exid) |
| 1760 | { |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1761 | struct nfs4_client *unconf, *conf, *new; |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 1762 | __be32 status; |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 1763 | char addr_str[INET6_ADDRSTRLEN]; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1764 | nfs4_verifier verf = exid->verifier; |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 1765 | struct sockaddr *sa = svc_addr(rqstp); |
J. Bruce Fields | 83e08fd | 2012-05-14 09:08:10 -0400 | [diff] [blame] | 1766 | bool update = exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A; |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 1767 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1768 | |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 1769 | rpc_ntop(sa, addr_str, sizeof(addr_str)); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1770 | dprintk("%s rqstp=%p exid=%p clname.len=%u clname.data=%p " |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 1771 | "ip_addr=%s flags %x, spa_how %d\n", |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1772 | __func__, rqstp, exid, exid->clname.len, exid->clname.data, |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 1773 | addr_str, exid->flags, exid->spa_how); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1774 | |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 1775 | if (exid->flags & ~EXCHGID4_FLAG_MASK_A) |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1776 | return nfserr_inval; |
| 1777 | |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1778 | switch (exid->spa_how) { |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 1779 | case SP4_MACH_CRED: |
| 1780 | if (!svc_rqst_integrity_protected(rqstp)) |
| 1781 | return nfserr_inval; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1782 | case SP4_NONE: |
| 1783 | break; |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 1784 | default: /* checked by xdr code */ |
| 1785 | WARN_ON_ONCE(1); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1786 | case SP4_SSV: |
J. Bruce Fields | dd30333 | 2013-04-12 18:10:56 -0400 | [diff] [blame] | 1787 | return nfserr_encr_alg_unsupp; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1788 | } |
| 1789 | |
J. Bruce Fields | 2dbb269 | 2012-05-14 09:47:11 -0400 | [diff] [blame] | 1790 | /* Cases below refer to rfc 5661 section 18.35.4: */ |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1791 | nfs4_lock_state(); |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 1792 | conf = find_confirmed_client_by_name(&exid->clname, nn); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1793 | if (conf) { |
J. Bruce Fields | 83e08fd | 2012-05-14 09:08:10 -0400 | [diff] [blame] | 1794 | bool creds_match = same_creds(&conf->cl_cred, &rqstp->rq_cred); |
| 1795 | bool verfs_match = same_verf(&verf, &conf->cl_verifier); |
| 1796 | |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1797 | if (update) { |
| 1798 | if (!clp_used_exchangeid(conf)) { /* buggy client */ |
J. Bruce Fields | 2dbb269 | 2012-05-14 09:47:11 -0400 | [diff] [blame] | 1799 | status = nfserr_inval; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1800 | goto out; |
| 1801 | } |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 1802 | if (!mach_creds_match(conf, rqstp)) { |
| 1803 | status = nfserr_wrong_cred; |
| 1804 | goto out; |
| 1805 | } |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1806 | if (!creds_match) { /* case 9 */ |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1807 | status = nfserr_perm; |
| 1808 | goto out; |
| 1809 | } |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1810 | if (!verfs_match) { /* case 8 */ |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1811 | status = nfserr_not_same; |
| 1812 | goto out; |
| 1813 | } |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1814 | /* case 6 */ |
| 1815 | exid->flags |= EXCHGID4_FLAG_CONFIRMED_R; |
| 1816 | new = conf; |
| 1817 | goto out_copy; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1818 | } |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1819 | if (!creds_match) { /* case 3 */ |
J. Bruce Fields | 631fc9e | 2012-05-14 15:57:23 -0400 | [diff] [blame] | 1820 | if (client_has_state(conf)) { |
| 1821 | status = nfserr_clid_inuse; |
| 1822 | goto out; |
| 1823 | } |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1824 | expire_client(conf); |
| 1825 | goto out_new; |
| 1826 | } |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1827 | if (verfs_match) { /* case 2 */ |
J. Bruce Fields | 0f1ba0e | 2012-05-25 21:24:40 -0400 | [diff] [blame] | 1828 | conf->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1829 | new = conf; |
| 1830 | goto out_copy; |
| 1831 | } |
| 1832 | /* case 5, client reboot */ |
J. Bruce Fields | 136e658 | 2012-05-12 20:37:23 -0400 | [diff] [blame] | 1833 | goto out_new; |
Mike Sager | 6ddbbbf | 2009-06-16 04:20:47 +0300 | [diff] [blame] | 1834 | } |
| 1835 | |
J. Bruce Fields | 2dbb269 | 2012-05-14 09:47:11 -0400 | [diff] [blame] | 1836 | if (update) { /* case 7 */ |
Mike Sager | 6ddbbbf | 2009-06-16 04:20:47 +0300 | [diff] [blame] | 1837 | status = nfserr_noent; |
| 1838 | goto out; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1839 | } |
| 1840 | |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 1841 | unconf = find_unconfirmed_client_by_name(&exid->clname, nn); |
J. Bruce Fields | 2dbb269 | 2012-05-14 09:47:11 -0400 | [diff] [blame] | 1842 | if (unconf) /* case 4, possible retry or client restart */ |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1843 | expire_client(unconf); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1844 | |
J. Bruce Fields | 2dbb269 | 2012-05-14 09:47:11 -0400 | [diff] [blame] | 1845 | /* case 1 (normal case) */ |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1846 | out_new: |
Jeff Layton | 2216d44 | 2012-11-12 15:00:57 -0500 | [diff] [blame] | 1847 | new = create_client(exid->clname, rqstp, &verf); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1848 | if (new == NULL) { |
J. Bruce Fields | 4731030 | 2010-06-22 16:17:12 -0400 | [diff] [blame] | 1849 | status = nfserr_jukebox; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1850 | goto out; |
| 1851 | } |
J. Bruce Fields | 4f540e2 | 2013-05-07 11:57:52 -0400 | [diff] [blame] | 1852 | new->cl_minorversion = cstate->minorversion; |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 1853 | new->cl_mach_cred = (exid->spa_how == SP4_MACH_CRED); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1854 | |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 1855 | gen_clid(new, nn); |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 1856 | add_to_unconfirmed(new); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1857 | out_copy: |
| 1858 | exid->clientid.cl_boot = new->cl_clientid.cl_boot; |
| 1859 | exid->clientid.cl_id = new->cl_clientid.cl_id; |
| 1860 | |
J. Bruce Fields | 778df3f | 2012-05-25 21:40:23 -0400 | [diff] [blame] | 1861 | exid->seqid = new->cl_cs_slot.sl_seqid + 1; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1862 | nfsd4_set_ex_flags(new, exid); |
| 1863 | |
| 1864 | dprintk("nfsd4_exchange_id seqid %d flags %x\n", |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 1865 | new->cl_cs_slot.sl_seqid, new->cl_exchange_flags); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1866 | status = nfs_ok; |
| 1867 | |
| 1868 | out: |
| 1869 | nfs4_unlock_state(); |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1870 | return status; |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 1871 | } |
| 1872 | |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 1873 | static __be32 |
Andy Adamson | 88e588d | 2009-07-23 19:02:15 -0400 | [diff] [blame] | 1874 | check_slot_seqid(u32 seqid, u32 slot_seqid, int slot_inuse) |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1875 | { |
Andy Adamson | 88e588d | 2009-07-23 19:02:15 -0400 | [diff] [blame] | 1876 | dprintk("%s enter. seqid %d slot_seqid %d\n", __func__, seqid, |
| 1877 | slot_seqid); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1878 | |
| 1879 | /* The slot is in use, and no response has been sent. */ |
Andy Adamson | 88e588d | 2009-07-23 19:02:15 -0400 | [diff] [blame] | 1880 | if (slot_inuse) { |
| 1881 | if (seqid == slot_seqid) |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1882 | return nfserr_jukebox; |
| 1883 | else |
| 1884 | return nfserr_seq_misordered; |
| 1885 | } |
J. Bruce Fields | f6d8248 | 2012-02-13 16:13:41 -0500 | [diff] [blame] | 1886 | /* Note unsigned 32-bit arithmetic handles wraparound: */ |
Andy Adamson | 88e588d | 2009-07-23 19:02:15 -0400 | [diff] [blame] | 1887 | if (likely(seqid == slot_seqid + 1)) |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1888 | return nfs_ok; |
Andy Adamson | 88e588d | 2009-07-23 19:02:15 -0400 | [diff] [blame] | 1889 | if (seqid == slot_seqid) |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1890 | return nfserr_replay_cache; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1891 | return nfserr_seq_misordered; |
| 1892 | } |
| 1893 | |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 1894 | /* |
| 1895 | * Cache the create session result into the create session single DRC |
| 1896 | * slot cache by saving the xdr structure. sl_seqid has been set. |
| 1897 | * Do this for solo or embedded create session operations. |
| 1898 | */ |
| 1899 | static void |
| 1900 | nfsd4_cache_create_session(struct nfsd4_create_session *cr_ses, |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 1901 | struct nfsd4_clid_slot *slot, __be32 nfserr) |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 1902 | { |
| 1903 | slot->sl_status = nfserr; |
| 1904 | memcpy(&slot->sl_cr_ses, cr_ses, sizeof(*cr_ses)); |
| 1905 | } |
| 1906 | |
| 1907 | static __be32 |
| 1908 | nfsd4_replay_create_session(struct nfsd4_create_session *cr_ses, |
| 1909 | struct nfsd4_clid_slot *slot) |
| 1910 | { |
| 1911 | memcpy(cr_ses, &slot->sl_cr_ses, sizeof(*cr_ses)); |
| 1912 | return slot->sl_status; |
| 1913 | } |
| 1914 | |
Mi Jinlong | 1b74c25 | 2011-07-14 14:50:17 +0800 | [diff] [blame] | 1915 | #define NFSD_MIN_REQ_HDR_SEQ_SZ ((\ |
| 1916 | 2 * 2 + /* credential,verifier: AUTH_NULL, length 0 */ \ |
| 1917 | 1 + /* MIN tag is length with zero, only length */ \ |
| 1918 | 3 + /* version, opcount, opcode */ \ |
| 1919 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ |
| 1920 | /* seqid, slotID, slotID, cache */ \ |
| 1921 | 4 ) * sizeof(__be32)) |
| 1922 | |
| 1923 | #define NFSD_MIN_RESP_HDR_SEQ_SZ ((\ |
| 1924 | 2 + /* verifier: AUTH_NULL, length 0 */\ |
| 1925 | 1 + /* status */ \ |
| 1926 | 1 + /* MIN tag is length with zero, only length */ \ |
| 1927 | 3 + /* opcount, opcode, opstatus*/ \ |
| 1928 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ |
| 1929 | /* seqid, slotID, slotID, slotID, status */ \ |
| 1930 | 5 ) * sizeof(__be32)) |
| 1931 | |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 1932 | static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs *ca, struct nfsd_net *nn) |
Mi Jinlong | 1b74c25 | 2011-07-14 14:50:17 +0800 | [diff] [blame] | 1933 | { |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 1934 | u32 maxrpc = nn->nfsd_serv->sv_max_mesg; |
| 1935 | |
J. Bruce Fields | 373cd40 | 2013-04-08 15:42:12 -0400 | [diff] [blame] | 1936 | if (ca->maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ) |
| 1937 | return nfserr_toosmall; |
| 1938 | if (ca->maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ) |
| 1939 | return nfserr_toosmall; |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 1940 | ca->headerpadsz = 0; |
| 1941 | ca->maxreq_sz = min_t(u32, ca->maxreq_sz, maxrpc); |
| 1942 | ca->maxresp_sz = min_t(u32, ca->maxresp_sz, maxrpc); |
| 1943 | ca->maxops = min_t(u32, ca->maxops, NFSD_MAX_OPS_PER_COMPOUND); |
| 1944 | ca->maxresp_cached = min_t(u32, ca->maxresp_cached, |
| 1945 | NFSD_SLOT_CACHE_SIZE + NFSD_MIN_HDR_SEQ_SZ); |
| 1946 | ca->maxreqs = min_t(u32, ca->maxreqs, NFSD_MAX_SLOTS_PER_SESSION); |
| 1947 | /* |
| 1948 | * Note decreasing slot size below client's request may make it |
| 1949 | * difficult for client to function correctly, whereas |
| 1950 | * decreasing the number of slots will (just?) affect |
| 1951 | * performance. When short on memory we therefore prefer to |
| 1952 | * decrease number of slots instead of their size. Clients that |
| 1953 | * request larger slots than they need will get poor results: |
| 1954 | */ |
| 1955 | ca->maxreqs = nfsd4_get_drc_mem(ca); |
| 1956 | if (!ca->maxreqs) |
| 1957 | return nfserr_jukebox; |
| 1958 | |
J. Bruce Fields | 373cd40 | 2013-04-08 15:42:12 -0400 | [diff] [blame] | 1959 | return nfs_ok; |
Mi Jinlong | 1b74c25 | 2011-07-14 14:50:17 +0800 | [diff] [blame] | 1960 | } |
| 1961 | |
Kinglong Mee | 8a89163 | 2013-12-23 18:11:02 +0800 | [diff] [blame] | 1962 | #define NFSD_CB_MAX_REQ_SZ ((NFS4_enc_cb_recall_sz + \ |
| 1963 | RPC_MAX_HEADER_WITH_AUTH) * sizeof(__be32)) |
| 1964 | #define NFSD_CB_MAX_RESP_SZ ((NFS4_dec_cb_recall_sz + \ |
| 1965 | RPC_MAX_REPHEADER_WITH_AUTH) * sizeof(__be32)) |
| 1966 | |
J. Bruce Fields | 06b332a | 2013-04-09 11:34:36 -0400 | [diff] [blame] | 1967 | static __be32 check_backchannel_attrs(struct nfsd4_channel_attrs *ca) |
| 1968 | { |
| 1969 | ca->headerpadsz = 0; |
| 1970 | |
| 1971 | /* |
| 1972 | * These RPC_MAX_HEADER macros are overkill, especially since we |
| 1973 | * don't even do gss on the backchannel yet. But this is still |
| 1974 | * less than 1k. Tighten up this estimate in the unlikely event |
| 1975 | * it turns out to be a problem for some client: |
| 1976 | */ |
Kinglong Mee | 8a89163 | 2013-12-23 18:11:02 +0800 | [diff] [blame] | 1977 | if (ca->maxreq_sz < NFSD_CB_MAX_REQ_SZ) |
J. Bruce Fields | 06b332a | 2013-04-09 11:34:36 -0400 | [diff] [blame] | 1978 | return nfserr_toosmall; |
Kinglong Mee | 8a89163 | 2013-12-23 18:11:02 +0800 | [diff] [blame] | 1979 | if (ca->maxresp_sz < NFSD_CB_MAX_RESP_SZ) |
J. Bruce Fields | 06b332a | 2013-04-09 11:34:36 -0400 | [diff] [blame] | 1980 | return nfserr_toosmall; |
| 1981 | ca->maxresp_cached = 0; |
| 1982 | if (ca->maxops < 2) |
| 1983 | return nfserr_toosmall; |
| 1984 | |
| 1985 | return nfs_ok; |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 1986 | } |
| 1987 | |
J. Bruce Fields | b78724b | 2013-05-15 17:34:39 -0400 | [diff] [blame] | 1988 | static __be32 nfsd4_check_cb_sec(struct nfsd4_cb_sec *cbs) |
| 1989 | { |
| 1990 | switch (cbs->flavor) { |
| 1991 | case RPC_AUTH_NULL: |
| 1992 | case RPC_AUTH_UNIX: |
| 1993 | return nfs_ok; |
| 1994 | default: |
| 1995 | /* |
| 1996 | * GSS case: the spec doesn't allow us to return this |
| 1997 | * error. But it also doesn't allow us not to support |
| 1998 | * GSS. |
| 1999 | * I'd rather this fail hard than return some error the |
| 2000 | * client might think it can already handle: |
| 2001 | */ |
| 2002 | return nfserr_encr_alg_unsupp; |
| 2003 | } |
| 2004 | } |
| 2005 | |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2006 | __be32 |
| 2007 | nfsd4_create_session(struct svc_rqst *rqstp, |
| 2008 | struct nfsd4_compound_state *cstate, |
| 2009 | struct nfsd4_create_session *cr_ses) |
| 2010 | { |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 2011 | struct sockaddr *sa = svc_addr(rqstp); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2012 | struct nfs4_client *conf, *unconf; |
J. Bruce Fields | ac7c46f | 2010-06-14 19:01:57 -0400 | [diff] [blame] | 2013 | struct nfsd4_session *new; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2014 | struct nfsd4_conn *conn; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2015 | struct nfsd4_clid_slot *cs_slot = NULL; |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 2016 | __be32 status = 0; |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 2017 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2018 | |
Mi Jinlong | a62573d | 2011-03-23 17:57:07 +0800 | [diff] [blame] | 2019 | if (cr_ses->flags & ~SESSION4_FLAG_MASK_A) |
| 2020 | return nfserr_inval; |
J. Bruce Fields | b78724b | 2013-05-15 17:34:39 -0400 | [diff] [blame] | 2021 | status = nfsd4_check_cb_sec(&cr_ses->cb_sec); |
| 2022 | if (status) |
| 2023 | return status; |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 2024 | status = check_forechannel_attrs(&cr_ses->fore_channel, nn); |
J. Bruce Fields | 373cd40 | 2013-04-08 15:42:12 -0400 | [diff] [blame] | 2025 | if (status) |
| 2026 | return status; |
J. Bruce Fields | 06b332a | 2013-04-09 11:34:36 -0400 | [diff] [blame] | 2027 | status = check_backchannel_attrs(&cr_ses->back_channel); |
| 2028 | if (status) |
Kinglong Mee | f403e45 | 2013-12-23 17:31:21 +0800 | [diff] [blame] | 2029 | goto out_release_drc_mem; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2030 | status = nfserr_jukebox; |
Kinglong Mee | 60810e5 | 2014-01-01 00:35:47 +0800 | [diff] [blame] | 2031 | new = alloc_session(&cr_ses->fore_channel, &cr_ses->back_channel); |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 2032 | if (!new) |
| 2033 | goto out_release_drc_mem; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2034 | conn = alloc_conn_from_crses(rqstp, cr_ses); |
| 2035 | if (!conn) |
| 2036 | goto out_free_session; |
Mi Jinlong | a62573d | 2011-03-23 17:57:07 +0800 | [diff] [blame] | 2037 | |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2038 | nfs4_lock_state(); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 2039 | unconf = find_unconfirmed_client(&cr_ses->clientid, true, nn); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 2040 | conf = find_confirmed_client(&cr_ses->clientid, true, nn); |
J. Bruce Fields | 7838904 | 2013-03-12 10:12:37 -0400 | [diff] [blame] | 2041 | WARN_ON_ONCE(conf && unconf); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2042 | |
| 2043 | if (conf) { |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2044 | status = nfserr_wrong_cred; |
| 2045 | if (!mach_creds_match(conf, rqstp)) |
| 2046 | goto out_free_conn; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2047 | cs_slot = &conf->cl_cs_slot; |
| 2048 | status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0); |
Andy Adamson | 38eb76a | 2009-04-03 08:28:32 +0300 | [diff] [blame] | 2049 | if (status == nfserr_replay_cache) { |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2050 | status = nfsd4_replay_create_session(cr_ses, cs_slot); |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2051 | goto out_free_conn; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2052 | } else if (cr_ses->seqid != cs_slot->sl_seqid + 1) { |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2053 | status = nfserr_seq_misordered; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2054 | goto out_free_conn; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2055 | } |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2056 | } else if (unconf) { |
J. Bruce Fields | 8f9d3d3 | 2012-09-12 14:41:31 -0400 | [diff] [blame] | 2057 | struct nfs4_client *old; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2058 | if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) || |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 2059 | !rpc_cmp_addr(sa, (struct sockaddr *) &unconf->cl_addr)) { |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2060 | status = nfserr_clid_inuse; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2061 | goto out_free_conn; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2062 | } |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2063 | status = nfserr_wrong_cred; |
| 2064 | if (!mach_creds_match(unconf, rqstp)) |
| 2065 | goto out_free_conn; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2066 | cs_slot = &unconf->cl_cs_slot; |
| 2067 | status = check_slot_seqid(cr_ses->seqid, cs_slot->sl_seqid, 0); |
Andy Adamson | 38eb76a | 2009-04-03 08:28:32 +0300 | [diff] [blame] | 2068 | if (status) { |
| 2069 | /* an unconfirmed replay returns misordered */ |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2070 | status = nfserr_seq_misordered; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2071 | goto out_free_conn; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2072 | } |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 2073 | old = find_confirmed_client_by_name(&unconf->cl_name, nn); |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2074 | if (old) { |
| 2075 | status = mark_client_expired(old); |
| 2076 | if (status) |
| 2077 | goto out_free_conn; |
J. Bruce Fields | 8f9d3d3 | 2012-09-12 14:41:31 -0400 | [diff] [blame] | 2078 | expire_client(old); |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2079 | } |
J. Bruce Fields | 8f9d3d3 | 2012-09-12 14:41:31 -0400 | [diff] [blame] | 2080 | move_to_confirmed(unconf); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2081 | conf = unconf; |
| 2082 | } else { |
| 2083 | status = nfserr_stale_clientid; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2084 | goto out_free_conn; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2085 | } |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2086 | status = nfs_ok; |
J. Bruce Fields | 8323c3b | 2010-10-19 19:36:51 -0400 | [diff] [blame] | 2087 | /* |
J. Bruce Fields | 408b79b | 2010-04-15 15:11:09 -0400 | [diff] [blame] | 2088 | * We do not support RDMA or persistent sessions |
| 2089 | */ |
| 2090 | cr_ses->flags &= ~SESSION4_PERSIST; |
| 2091 | cr_ses->flags &= ~SESSION4_RDMA; |
| 2092 | |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2093 | init_session(rqstp, new, conf, cr_ses); |
| 2094 | nfsd4_init_conn(rqstp, conn, new); |
| 2095 | |
J. Bruce Fields | ac7c46f | 2010-06-14 19:01:57 -0400 | [diff] [blame] | 2096 | memcpy(cr_ses->sessionid.data, new->se_sessionid.data, |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2097 | NFS4_MAX_SESSIONID_LEN); |
J. Bruce Fields | 86c3e16 | 2010-10-02 17:04:00 -0400 | [diff] [blame] | 2098 | cs_slot->sl_seqid++; |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2099 | cr_ses->seqid = cs_slot->sl_seqid; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2100 | |
Andy Adamson | 49557cc | 2009-07-23 19:02:16 -0400 | [diff] [blame] | 2101 | /* cache solo and embedded create sessions under the state lock */ |
| 2102 | nfsd4_cache_create_session(cr_ses, cs_slot, status); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2103 | nfs4_unlock_state(); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 2104 | return status; |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2105 | out_free_conn: |
Yanchuan Nian | 266533c | 2012-12-24 18:11:45 +0800 | [diff] [blame] | 2106 | nfs4_unlock_state(); |
J. Bruce Fields | 81f0b2a | 2012-09-12 11:04:33 -0400 | [diff] [blame] | 2107 | free_conn(conn); |
| 2108 | out_free_session: |
| 2109 | __free_session(new); |
J. Bruce Fields | 55c760c | 2013-04-08 16:44:14 -0400 | [diff] [blame] | 2110 | out_release_drc_mem: |
| 2111 | nfsd4_put_drc_mem(&cr_ses->fore_channel); |
J. Bruce Fields | 1ca5079 | 2013-03-14 18:12:03 -0400 | [diff] [blame] | 2112 | return status; |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2113 | } |
| 2114 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2115 | static __be32 nfsd4_map_bcts_dir(u32 *dir) |
| 2116 | { |
| 2117 | switch (*dir) { |
| 2118 | case NFS4_CDFC4_FORE: |
| 2119 | case NFS4_CDFC4_BACK: |
| 2120 | return nfs_ok; |
| 2121 | case NFS4_CDFC4_FORE_OR_BOTH: |
| 2122 | case NFS4_CDFC4_BACK_OR_BOTH: |
| 2123 | *dir = NFS4_CDFC4_BOTH; |
| 2124 | return nfs_ok; |
| 2125 | }; |
| 2126 | return nfserr_inval; |
| 2127 | } |
| 2128 | |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2129 | __be32 nfsd4_backchannel_ctl(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_backchannel_ctl *bc) |
| 2130 | { |
| 2131 | struct nfsd4_session *session = cstate->session; |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2132 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
J. Bruce Fields | b78724b | 2013-05-15 17:34:39 -0400 | [diff] [blame] | 2133 | __be32 status; |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2134 | |
J. Bruce Fields | b78724b | 2013-05-15 17:34:39 -0400 | [diff] [blame] | 2135 | status = nfsd4_check_cb_sec(&bc->bc_cb_sec); |
| 2136 | if (status) |
| 2137 | return status; |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2138 | spin_lock(&nn->client_lock); |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2139 | session->se_cb_prog = bc->bc_cb_program; |
| 2140 | session->se_cb_sec = bc->bc_cb_sec; |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2141 | spin_unlock(&nn->client_lock); |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2142 | |
| 2143 | nfsd4_probe_callback(session->se_client); |
| 2144 | |
| 2145 | return nfs_ok; |
| 2146 | } |
| 2147 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2148 | __be32 nfsd4_bind_conn_to_session(struct svc_rqst *rqstp, |
| 2149 | struct nfsd4_compound_state *cstate, |
| 2150 | struct nfsd4_bind_conn_to_session *bcts) |
| 2151 | { |
| 2152 | __be32 status; |
J. Bruce Fields | 3ba6367 | 2012-09-11 15:37:40 -0400 | [diff] [blame] | 2153 | struct nfsd4_conn *conn; |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2154 | struct nfsd4_session *session; |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2155 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2156 | |
| 2157 | if (!nfsd4_last_compound_op(rqstp)) |
| 2158 | return nfserr_not_only_op; |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2159 | nfs4_lock_state(); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2160 | spin_lock(&nn->client_lock); |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2161 | session = find_in_sessionid_hashtbl(&bcts->sessionid, SVC_NET(rqstp)); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2162 | spin_unlock(&nn->client_lock); |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2163 | status = nfserr_badsession; |
| 2164 | if (!session) |
| 2165 | goto out; |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2166 | status = nfserr_wrong_cred; |
| 2167 | if (!mach_creds_match(session->se_client, rqstp)) |
| 2168 | goto out; |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2169 | status = nfsd4_map_bcts_dir(&bcts->dir); |
J. Bruce Fields | 3ba6367 | 2012-09-11 15:37:40 -0400 | [diff] [blame] | 2170 | if (status) |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2171 | goto out; |
J. Bruce Fields | 3ba6367 | 2012-09-11 15:37:40 -0400 | [diff] [blame] | 2172 | conn = alloc_conn(rqstp, bcts->dir); |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2173 | status = nfserr_jukebox; |
J. Bruce Fields | 3ba6367 | 2012-09-11 15:37:40 -0400 | [diff] [blame] | 2174 | if (!conn) |
J. Bruce Fields | 4f6e6c1 | 2013-03-18 17:31:30 -0400 | [diff] [blame] | 2175 | goto out; |
| 2176 | nfsd4_init_conn(rqstp, conn, session); |
| 2177 | status = nfs_ok; |
| 2178 | out: |
| 2179 | nfs4_unlock_state(); |
| 2180 | return status; |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2181 | } |
| 2182 | |
J. Bruce Fields | 5d4cec2 | 2010-05-01 12:56:06 -0400 | [diff] [blame] | 2183 | static bool nfsd4_compound_in_session(struct nfsd4_session *session, struct nfs4_sessionid *sid) |
| 2184 | { |
| 2185 | if (!session) |
| 2186 | return 0; |
| 2187 | return !memcmp(sid, &session->se_sessionid, sizeof(*sid)); |
| 2188 | } |
| 2189 | |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2190 | __be32 |
| 2191 | nfsd4_destroy_session(struct svc_rqst *r, |
| 2192 | struct nfsd4_compound_state *cstate, |
| 2193 | struct nfsd4_destroy_session *sessionid) |
| 2194 | { |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2195 | struct nfsd4_session *ses; |
J. Bruce Fields | abcdff0 | 2013-03-14 19:55:33 -0400 | [diff] [blame] | 2196 | __be32 status; |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 2197 | int ref_held_by_me = 0; |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2198 | struct nfsd_net *nn = net_generic(SVC_NET(r), nfsd_net_id); |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2199 | |
J. Bruce Fields | abcdff0 | 2013-03-14 19:55:33 -0400 | [diff] [blame] | 2200 | nfs4_lock_state(); |
| 2201 | status = nfserr_not_only_op; |
J. Bruce Fields | 5d4cec2 | 2010-05-01 12:56:06 -0400 | [diff] [blame] | 2202 | if (nfsd4_compound_in_session(cstate->session, &sessionid->sessionid)) { |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 2203 | if (!nfsd4_last_compound_op(r)) |
J. Bruce Fields | abcdff0 | 2013-03-14 19:55:33 -0400 | [diff] [blame] | 2204 | goto out; |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 2205 | ref_held_by_me++; |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 2206 | } |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2207 | dump_sessionid(__func__, &sessionid->sessionid); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2208 | spin_lock(&nn->client_lock); |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 2209 | ses = find_in_sessionid_hashtbl(&sessionid->sessionid, SVC_NET(r)); |
J. Bruce Fields | abcdff0 | 2013-03-14 19:55:33 -0400 | [diff] [blame] | 2210 | status = nfserr_badsession; |
| 2211 | if (!ses) |
| 2212 | goto out_client_lock; |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2213 | status = nfserr_wrong_cred; |
| 2214 | if (!mach_creds_match(ses->se_client, r)) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2215 | goto out_client_lock; |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 2216 | nfsd4_get_session_locked(ses); |
| 2217 | status = mark_session_dead_locked(ses, 1 + ref_held_by_me); |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2218 | if (status) |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 2219 | goto out_put_session; |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2220 | unhash_session(ses); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2221 | spin_unlock(&nn->client_lock); |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2222 | |
J. Bruce Fields | 84f5f7c | 2010-12-09 15:52:19 -0500 | [diff] [blame] | 2223 | nfsd4_probe_callback_sync(ses->se_client); |
J. Bruce Fields | 19cf5c0 | 2010-06-06 18:37:16 -0400 | [diff] [blame] | 2224 | |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2225 | spin_lock(&nn->client_lock); |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2226 | status = nfs_ok; |
J. Bruce Fields | f0f51f5 | 2013-06-18 14:26:02 -0400 | [diff] [blame] | 2227 | out_put_session: |
| 2228 | nfsd4_put_session(ses); |
J. Bruce Fields | abcdff0 | 2013-03-14 19:55:33 -0400 | [diff] [blame] | 2229 | out_client_lock: |
| 2230 | spin_unlock(&nn->client_lock); |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2231 | out: |
J. Bruce Fields | abcdff0 | 2013-03-14 19:55:33 -0400 | [diff] [blame] | 2232 | nfs4_unlock_state(); |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 2233 | return status; |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2234 | } |
| 2235 | |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2236 | static struct nfsd4_conn *__nfsd4_find_conn(struct svc_xprt *xpt, struct nfsd4_session *s) |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2237 | { |
| 2238 | struct nfsd4_conn *c; |
| 2239 | |
| 2240 | list_for_each_entry(c, &s->se_conns, cn_persession) { |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2241 | if (c->cn_xprt == xpt) { |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2242 | return c; |
| 2243 | } |
| 2244 | } |
| 2245 | return NULL; |
| 2246 | } |
| 2247 | |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2248 | static __be32 nfsd4_sequence_check_conn(struct nfsd4_conn *new, struct nfsd4_session *ses) |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2249 | { |
| 2250 | struct nfs4_client *clp = ses->se_client; |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2251 | struct nfsd4_conn *c; |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2252 | __be32 status = nfs_ok; |
J. Bruce Fields | 21b75b0 | 2010-10-26 10:07:17 -0400 | [diff] [blame] | 2253 | int ret; |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2254 | |
| 2255 | spin_lock(&clp->cl_lock); |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2256 | c = __nfsd4_find_conn(new->cn_xprt, ses); |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2257 | if (c) |
| 2258 | goto out_free; |
| 2259 | status = nfserr_conn_not_bound_to_session; |
| 2260 | if (clp->cl_mach_cred) |
| 2261 | goto out_free; |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2262 | __nfsd4_hash_conn(new, ses); |
| 2263 | spin_unlock(&clp->cl_lock); |
J. Bruce Fields | 21b75b0 | 2010-10-26 10:07:17 -0400 | [diff] [blame] | 2264 | ret = nfsd4_register_conn(new); |
| 2265 | if (ret) |
| 2266 | /* oops; xprt is already down: */ |
| 2267 | nfsd4_conn_lost(&new->cn_xpt_user); |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2268 | return nfs_ok; |
| 2269 | out_free: |
| 2270 | spin_unlock(&clp->cl_lock); |
| 2271 | free_conn(new); |
| 2272 | return status; |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2273 | } |
| 2274 | |
Mi Jinlong | 868b89c | 2011-04-27 09:09:58 +0800 | [diff] [blame] | 2275 | static bool nfsd4_session_too_many_ops(struct svc_rqst *rqstp, struct nfsd4_session *session) |
| 2276 | { |
| 2277 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
| 2278 | |
| 2279 | return args->opcnt > session->se_fchannel.maxops; |
| 2280 | } |
| 2281 | |
Mi Jinlong | ae82a8d | 2011-07-14 14:56:02 +0800 | [diff] [blame] | 2282 | static bool nfsd4_request_too_big(struct svc_rqst *rqstp, |
| 2283 | struct nfsd4_session *session) |
| 2284 | { |
| 2285 | struct xdr_buf *xb = &rqstp->rq_arg; |
| 2286 | |
| 2287 | return xb->len > session->se_fchannel.maxreq_sz; |
| 2288 | } |
| 2289 | |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2290 | __be32 |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2291 | nfsd4_sequence(struct svc_rqst *rqstp, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2292 | struct nfsd4_compound_state *cstate, |
| 2293 | struct nfsd4_sequence *seq) |
| 2294 | { |
Andy Adamson | f9bb94c | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 2295 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
J. Bruce Fields | 47ee529 | 2014-03-12 21:39:35 -0400 | [diff] [blame] | 2296 | struct xdr_stream *xdr = &resp->xdr; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2297 | struct nfsd4_session *session; |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2298 | struct nfs4_client *clp; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2299 | struct nfsd4_slot *slot; |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2300 | struct nfsd4_conn *conn; |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 2301 | __be32 status; |
J. Bruce Fields | 47ee529 | 2014-03-12 21:39:35 -0400 | [diff] [blame] | 2302 | int buflen; |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2303 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2304 | |
Andy Adamson | f9bb94c | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 2305 | if (resp->opcnt != 1) |
| 2306 | return nfserr_sequence_pos; |
| 2307 | |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2308 | /* |
| 2309 | * Will be either used or freed by nfsd4_sequence_check_conn |
| 2310 | * below. |
| 2311 | */ |
| 2312 | conn = alloc_conn(rqstp, NFS4_CDFC4_FORE); |
| 2313 | if (!conn) |
| 2314 | return nfserr_jukebox; |
| 2315 | |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2316 | spin_lock(&nn->client_lock); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2317 | status = nfserr_badsession; |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 2318 | session = find_in_sessionid_hashtbl(&seq->sessionid, SVC_NET(rqstp)); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2319 | if (!session) |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2320 | goto out_no_session; |
| 2321 | clp = session->se_client; |
| 2322 | status = get_client_locked(clp); |
| 2323 | if (status) |
| 2324 | goto out_no_session; |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2325 | status = nfsd4_get_session_locked(session); |
| 2326 | if (status) |
| 2327 | goto out_put_client; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2328 | |
Mi Jinlong | 868b89c | 2011-04-27 09:09:58 +0800 | [diff] [blame] | 2329 | status = nfserr_too_many_ops; |
| 2330 | if (nfsd4_session_too_many_ops(rqstp, session)) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2331 | goto out_put_session; |
Mi Jinlong | 868b89c | 2011-04-27 09:09:58 +0800 | [diff] [blame] | 2332 | |
Mi Jinlong | ae82a8d | 2011-07-14 14:56:02 +0800 | [diff] [blame] | 2333 | status = nfserr_req_too_big; |
| 2334 | if (nfsd4_request_too_big(rqstp, session)) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2335 | goto out_put_session; |
Mi Jinlong | ae82a8d | 2011-07-14 14:56:02 +0800 | [diff] [blame] | 2336 | |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2337 | status = nfserr_badslot; |
Alexandros Batsakis | 6c18ba9 | 2009-06-16 04:19:13 +0300 | [diff] [blame] | 2338 | if (seq->slotid >= session->se_fchannel.maxreqs) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2339 | goto out_put_session; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2340 | |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 2341 | slot = session->se_slots[seq->slotid]; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2342 | dprintk("%s: slotid %d\n", __func__, seq->slotid); |
| 2343 | |
Andy Adamson | a8dfdae | 2009-08-28 08:45:02 -0400 | [diff] [blame] | 2344 | /* We do not negotiate the number of slots yet, so set the |
| 2345 | * maxslots to the session maxreqs which is used to encode |
| 2346 | * sr_highest_slotid and the sr_target_slot id to maxslots */ |
| 2347 | seq->maxslots = session->se_fchannel.maxreqs; |
| 2348 | |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 2349 | status = check_slot_seqid(seq->seqid, slot->sl_seqid, |
| 2350 | slot->sl_flags & NFSD4_SLOT_INUSE); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2351 | if (status == nfserr_replay_cache) { |
J. Bruce Fields | bf5c43c | 2012-02-13 16:56:19 -0500 | [diff] [blame] | 2352 | status = nfserr_seq_misordered; |
| 2353 | if (!(slot->sl_flags & NFSD4_SLOT_INITIALIZED)) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2354 | goto out_put_session; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2355 | cstate->slot = slot; |
| 2356 | cstate->session = session; |
Andy Adamson | da3846a | 2009-04-03 08:28:22 +0300 | [diff] [blame] | 2357 | /* Return the cached reply status and set cstate->status |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 2358 | * for nfsd4_proc_compound processing */ |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 2359 | status = nfsd4_replay_cache_entry(resp, seq); |
Andy Adamson | da3846a | 2009-04-03 08:28:22 +0300 | [diff] [blame] | 2360 | cstate->status = nfserr_replay_cache; |
Benny Halevy | aaf84eb | 2009-08-20 03:21:56 +0300 | [diff] [blame] | 2361 | goto out; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2362 | } |
| 2363 | if (status) |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2364 | goto out_put_session; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2365 | |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2366 | status = nfsd4_sequence_check_conn(conn, session); |
J. Bruce Fields | a663bdd | 2010-10-21 17:17:31 -0400 | [diff] [blame] | 2367 | conn = NULL; |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2368 | if (status) |
| 2369 | goto out_put_session; |
J. Bruce Fields | 328ead2 | 2010-09-29 16:11:06 -0400 | [diff] [blame] | 2370 | |
J. Bruce Fields | 47ee529 | 2014-03-12 21:39:35 -0400 | [diff] [blame] | 2371 | buflen = (seq->cachethis) ? |
| 2372 | session->se_fchannel.maxresp_cached : |
| 2373 | session->se_fchannel.maxresp_sz; |
| 2374 | status = (seq->cachethis) ? nfserr_rep_too_big_to_cache : |
| 2375 | nfserr_rep_too_big; |
J. Bruce Fields | a5cddc8 | 2014-05-12 18:10:58 -0400 | [diff] [blame] | 2376 | if (xdr_restrict_buflen(xdr, buflen - rqstp->rq_auth_slack)) |
J. Bruce Fields | 47ee529 | 2014-03-12 21:39:35 -0400 | [diff] [blame] | 2377 | goto out_put_session; |
J. Bruce Fields | 32aaa62 | 2014-03-20 20:47:41 -0400 | [diff] [blame] | 2378 | svc_reserve(rqstp, buflen); |
J. Bruce Fields | 47ee529 | 2014-03-12 21:39:35 -0400 | [diff] [blame] | 2379 | |
| 2380 | status = nfs_ok; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2381 | /* Success! bump slot seqid */ |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2382 | slot->sl_seqid = seq->seqid; |
J. Bruce Fields | bf5c43c | 2012-02-13 16:56:19 -0500 | [diff] [blame] | 2383 | slot->sl_flags |= NFSD4_SLOT_INUSE; |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 2384 | if (seq->cachethis) |
| 2385 | slot->sl_flags |= NFSD4_SLOT_CACHETHIS; |
J. Bruce Fields | bf5c43c | 2012-02-13 16:56:19 -0500 | [diff] [blame] | 2386 | else |
| 2387 | slot->sl_flags &= ~NFSD4_SLOT_CACHETHIS; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2388 | |
| 2389 | cstate->slot = slot; |
| 2390 | cstate->session = session; |
| 2391 | |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2392 | out: |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2393 | switch (clp->cl_cb_state) { |
| 2394 | case NFSD4_CB_DOWN: |
| 2395 | seq->status_flags = SEQ4_STATUS_CB_PATH_DOWN; |
| 2396 | break; |
| 2397 | case NFSD4_CB_FAULT: |
| 2398 | seq->status_flags = SEQ4_STATUS_BACKCHANNEL_FAULT; |
| 2399 | break; |
| 2400 | default: |
| 2401 | seq->status_flags = 0; |
Benny Halevy | aaf84eb | 2009-08-20 03:21:56 +0300 | [diff] [blame] | 2402 | } |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 2403 | if (!list_empty(&clp->cl_revoked)) |
| 2404 | seq->status_flags |= SEQ4_STATUS_RECALLABLE_STATE_REVOKED; |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2405 | out_no_session: |
Kinglong Mee | 3f42d2c | 2014-03-24 11:56:59 +0800 | [diff] [blame] | 2406 | if (conn) |
| 2407 | free_conn(conn); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 2408 | spin_unlock(&nn->client_lock); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 2409 | return status; |
J. Bruce Fields | 66b2b9b | 2013-03-19 12:05:39 -0400 | [diff] [blame] | 2410 | out_put_session: |
| 2411 | nfsd4_put_session(session); |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2412 | out_put_client: |
| 2413 | put_client_renew_locked(clp); |
| 2414 | goto out_no_session; |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2415 | } |
| 2416 | |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 2417 | __be32 |
| 2418 | nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc) |
| 2419 | { |
| 2420 | struct nfs4_client *conf, *unconf, *clp; |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 2421 | __be32 status = 0; |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 2422 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 2423 | |
| 2424 | nfs4_lock_state(); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 2425 | unconf = find_unconfirmed_client(&dc->clientid, true, nn); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 2426 | conf = find_confirmed_client(&dc->clientid, true, nn); |
J. Bruce Fields | 7838904 | 2013-03-12 10:12:37 -0400 | [diff] [blame] | 2427 | WARN_ON_ONCE(conf && unconf); |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 2428 | |
| 2429 | if (conf) { |
| 2430 | clp = conf; |
| 2431 | |
J. Bruce Fields | c0293b0 | 2013-03-14 18:20:01 -0400 | [diff] [blame] | 2432 | if (client_has_state(conf)) { |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 2433 | status = nfserr_clientid_busy; |
| 2434 | goto out; |
| 2435 | } |
| 2436 | } else if (unconf) |
| 2437 | clp = unconf; |
| 2438 | else { |
| 2439 | status = nfserr_stale_clientid; |
| 2440 | goto out; |
| 2441 | } |
J. Bruce Fields | 57266a6 | 2013-04-13 14:27:29 -0400 | [diff] [blame] | 2442 | if (!mach_creds_match(clp, rqstp)) { |
| 2443 | status = nfserr_wrong_cred; |
| 2444 | goto out; |
| 2445 | } |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 2446 | expire_client(clp); |
| 2447 | out: |
| 2448 | nfs4_unlock_state(); |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 2449 | return status; |
| 2450 | } |
| 2451 | |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2452 | __be32 |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2453 | nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc) |
| 2454 | { |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 2455 | __be32 status = 0; |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2456 | |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2457 | if (rc->rca_one_fs) { |
| 2458 | if (!cstate->current_fh.fh_dentry) |
| 2459 | return nfserr_nofilehandle; |
| 2460 | /* |
| 2461 | * We don't take advantage of the rca_one_fs case. |
| 2462 | * That's OK, it's optional, we can safely ignore it. |
| 2463 | */ |
| 2464 | return nfs_ok; |
| 2465 | } |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2466 | |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2467 | nfs4_lock_state(); |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2468 | status = nfserr_complete_already; |
Jeff Layton | a52d726 | 2012-03-21 09:52:02 -0400 | [diff] [blame] | 2469 | if (test_and_set_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, |
| 2470 | &cstate->session->se_client->cl_flags)) |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2471 | goto out; |
| 2472 | |
| 2473 | status = nfserr_stale_clientid; |
| 2474 | if (is_client_expired(cstate->session->se_client)) |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2475 | /* |
| 2476 | * The following error isn't really legal. |
| 2477 | * But we only get here if the client just explicitly |
| 2478 | * destroyed the client. Surely it no longer cares what |
| 2479 | * error it gets back on an operation for the dead |
| 2480 | * client. |
| 2481 | */ |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2482 | goto out; |
| 2483 | |
| 2484 | status = nfs_ok; |
Jeff Layton | 2a4317c | 2012-03-21 16:42:43 -0400 | [diff] [blame] | 2485 | nfsd4_client_record_create(cstate->session->se_client); |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2486 | out: |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2487 | nfs4_unlock_state(); |
Mi Jinlong | bcecf1c | 2011-04-27 09:14:30 +0800 | [diff] [blame] | 2488 | return status; |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2489 | } |
| 2490 | |
| 2491 | __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2492 | nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 2493 | struct nfsd4_setclientid *setclid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2494 | { |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 2495 | struct xdr_netobj clname = setclid->se_name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2496 | nfs4_verifier clverifier = setclid->se_verf; |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 2497 | struct nfs4_client *conf, *unconf, *new; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2498 | __be32 status; |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 2499 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
| 2500 | |
J. Bruce Fields | 63db463 | 2012-05-18 21:54:19 -0400 | [diff] [blame] | 2501 | /* Cases below refer to rfc 3530 section 14.2.33: */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2502 | nfs4_lock_state(); |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 2503 | conf = find_confirmed_client_by_name(&clname, nn); |
NeilBrown | 28ce605 | 2005-06-23 22:03:56 -0700 | [diff] [blame] | 2504 | if (conf) { |
J. Bruce Fields | 63db463 | 2012-05-18 21:54:19 -0400 | [diff] [blame] | 2505 | /* case 0: */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2506 | status = nfserr_clid_inuse; |
J. Bruce Fields | e203d50 | 2010-11-24 17:30:54 -0500 | [diff] [blame] | 2507 | if (clp_used_exchangeid(conf)) |
| 2508 | goto out; |
J. Bruce Fields | 026722c | 2009-03-18 15:06:26 -0400 | [diff] [blame] | 2509 | if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) { |
Jeff Layton | 363168b | 2009-08-14 12:57:56 -0400 | [diff] [blame] | 2510 | char addr_str[INET6_ADDRSTRLEN]; |
| 2511 | rpc_ntop((struct sockaddr *) &conf->cl_addr, addr_str, |
| 2512 | sizeof(addr_str)); |
| 2513 | dprintk("NFSD: setclientid: string in use by client " |
| 2514 | "at %s\n", addr_str); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2515 | goto out; |
| 2516 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2517 | } |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 2518 | unconf = find_unconfirmed_client_by_name(&clname, nn); |
J. Bruce Fields | 8f93071 | 2012-05-18 22:06:41 -0400 | [diff] [blame] | 2519 | if (unconf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | expire_client(unconf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2521 | status = nfserr_jukebox; |
Jeff Layton | 2216d44 | 2012-11-12 15:00:57 -0500 | [diff] [blame] | 2522 | new = create_client(clname, rqstp, &clverifier); |
J. Bruce Fields | 8f93071 | 2012-05-18 22:06:41 -0400 | [diff] [blame] | 2523 | if (new == NULL) |
| 2524 | goto out; |
J. Bruce Fields | 34b232b | 2012-05-18 22:23:42 -0400 | [diff] [blame] | 2525 | if (conf && same_verf(&conf->cl_verifier, &clverifier)) |
J. Bruce Fields | 63db463 | 2012-05-18 21:54:19 -0400 | [diff] [blame] | 2526 | /* case 1: probable callback update */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2527 | copy_clid(new, conf); |
J. Bruce Fields | 34b232b | 2012-05-18 22:23:42 -0400 | [diff] [blame] | 2528 | else /* case 4 (new client) or cases 2, 3 (client reboot): */ |
Stanislav Kinsbursky | c212cec | 2012-11-14 18:21:10 +0300 | [diff] [blame] | 2529 | gen_clid(new, nn); |
J. Bruce Fields | 8323c3b | 2010-10-19 19:36:51 -0400 | [diff] [blame] | 2530 | new->cl_minorversion = 0; |
Takuma Umeya | 6f3d772 | 2010-12-15 14:09:01 +0900 | [diff] [blame] | 2531 | gen_callback(new, setclid, rqstp); |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 2532 | add_to_unconfirmed(new); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2533 | setclid->se_clientid.cl_boot = new->cl_clientid.cl_boot; |
| 2534 | setclid->se_clientid.cl_id = new->cl_clientid.cl_id; |
| 2535 | memcpy(setclid->se_confirm.data, new->cl_confirm.data, sizeof(setclid->se_confirm.data)); |
| 2536 | status = nfs_ok; |
| 2537 | out: |
| 2538 | nfs4_unlock_state(); |
| 2539 | return status; |
| 2540 | } |
| 2541 | |
| 2542 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2543 | __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2544 | nfsd4_setclientid_confirm(struct svc_rqst *rqstp, |
| 2545 | struct nfsd4_compound_state *cstate, |
| 2546 | struct nfsd4_setclientid_confirm *setclientid_confirm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2547 | { |
NeilBrown | 21ab45a | 2005-06-23 22:04:14 -0700 | [diff] [blame] | 2548 | struct nfs4_client *conf, *unconf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2549 | nfs4_verifier confirm = setclientid_confirm->sc_confirm; |
| 2550 | clientid_t * clid = &setclientid_confirm->sc_clientid; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2551 | __be32 status; |
Stanislav Kinsbursky | 7f2210f | 2012-11-14 18:21:05 +0300 | [diff] [blame] | 2552 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 2554 | if (STALE_CLIENTID(clid, nn)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | return nfserr_stale_clientid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2556 | nfs4_lock_state(); |
NeilBrown | 21ab45a | 2005-06-23 22:04:14 -0700 | [diff] [blame] | 2557 | |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 2558 | conf = find_confirmed_client(clid, false, nn); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 2559 | unconf = find_unconfirmed_client(clid, false, nn); |
J. Bruce Fields | a186e76 | 2007-11-20 16:11:27 -0500 | [diff] [blame] | 2560 | /* |
J. Bruce Fields | 8695b90 | 2012-05-19 10:05:58 -0400 | [diff] [blame] | 2561 | * We try hard to give out unique clientid's, so if we get an |
| 2562 | * attempt to confirm the same clientid with a different cred, |
| 2563 | * there's a bug somewhere. Let's charitably assume it's our |
| 2564 | * bug. |
J. Bruce Fields | a186e76 | 2007-11-20 16:11:27 -0500 | [diff] [blame] | 2565 | */ |
J. Bruce Fields | 8695b90 | 2012-05-19 10:05:58 -0400 | [diff] [blame] | 2566 | status = nfserr_serverfault; |
| 2567 | if (unconf && !same_creds(&unconf->cl_cred, &rqstp->rq_cred)) |
| 2568 | goto out; |
| 2569 | if (conf && !same_creds(&conf->cl_cred, &rqstp->rq_cred)) |
| 2570 | goto out; |
J. Bruce Fields | 63db463 | 2012-05-18 21:54:19 -0400 | [diff] [blame] | 2571 | /* cases below refer to rfc 3530 section 14.2.34: */ |
J. Bruce Fields | 90d700b | 2012-05-19 13:55:22 -0400 | [diff] [blame] | 2572 | if (!unconf || !same_verf(&confirm, &unconf->cl_confirm)) { |
| 2573 | if (conf && !unconf) /* case 2: probable retransmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | status = nfs_ok; |
J. Bruce Fields | 90d700b | 2012-05-19 13:55:22 -0400 | [diff] [blame] | 2575 | else /* case 4: client hasn't noticed we rebooted yet? */ |
| 2576 | status = nfserr_stale_clientid; |
| 2577 | goto out; |
| 2578 | } |
| 2579 | status = nfs_ok; |
| 2580 | if (conf) { /* case 1: callback update */ |
J. Bruce Fields | 8695b90 | 2012-05-19 10:05:58 -0400 | [diff] [blame] | 2581 | nfsd4_change_callback(conf, &unconf->cl_cb_conn); |
| 2582 | nfsd4_probe_callback(conf); |
| 2583 | expire_client(unconf); |
J. Bruce Fields | 90d700b | 2012-05-19 13:55:22 -0400 | [diff] [blame] | 2584 | } else { /* case 3: normal case; new or rebooted client */ |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 2585 | conf = find_confirmed_client_by_name(&unconf->cl_name, nn); |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2586 | if (conf) { |
| 2587 | status = mark_client_expired(conf); |
| 2588 | if (status) |
| 2589 | goto out; |
J. Bruce Fields | 8695b90 | 2012-05-19 10:05:58 -0400 | [diff] [blame] | 2590 | expire_client(conf); |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 2591 | } |
J. Bruce Fields | 8695b90 | 2012-05-19 10:05:58 -0400 | [diff] [blame] | 2592 | move_to_confirmed(unconf); |
J. Bruce Fields | f3d03b9 | 2012-05-23 11:38:38 -0400 | [diff] [blame] | 2593 | nfsd4_probe_callback(unconf); |
NeilBrown | 08e8987 | 2005-06-23 22:04:11 -0700 | [diff] [blame] | 2594 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2595 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2596 | nfs4_unlock_state(); |
| 2597 | return status; |
| 2598 | } |
| 2599 | |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 2600 | static struct nfs4_file *nfsd4_alloc_file(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | { |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 2602 | return kmem_cache_alloc(file_slab, GFP_KERNEL); |
| 2603 | } |
| 2604 | |
| 2605 | /* OPEN Share state helper functions */ |
| 2606 | static void nfsd4_init_file(struct nfs4_file *fp, struct inode *ino) |
| 2607 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | unsigned int hashval = file_hashval(ino); |
| 2609 | |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 2610 | atomic_set(&fp->fi_ref, 1); |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 2611 | INIT_LIST_HEAD(&fp->fi_stateids); |
| 2612 | INIT_LIST_HEAD(&fp->fi_delegations); |
| 2613 | fp->fi_inode = igrab(ino); |
| 2614 | fp->fi_had_conflict = false; |
| 2615 | fp->fi_lease = NULL; |
| 2616 | memset(fp->fi_fds, 0, sizeof(fp->fi_fds)); |
| 2617 | memset(fp->fi_access, 0, sizeof(fp->fi_access)); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2618 | spin_lock(&state_lock); |
Jeff Layton | 89876f8 | 2013-04-02 09:01:59 -0400 | [diff] [blame] | 2619 | hlist_add_head(&fp->fi_hash, &file_hashtbl[hashval]); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2620 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2621 | } |
| 2622 | |
J. Bruce Fields | e8ff2a8 | 2007-08-01 15:30:59 -0400 | [diff] [blame] | 2623 | void |
NeilBrown | e60d439 | 2005-06-23 22:03:01 -0700 | [diff] [blame] | 2624 | nfsd4_free_slabs(void) |
| 2625 | { |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2626 | kmem_cache_destroy(openowner_slab); |
| 2627 | kmem_cache_destroy(lockowner_slab); |
| 2628 | kmem_cache_destroy(file_slab); |
| 2629 | kmem_cache_destroy(stateid_slab); |
| 2630 | kmem_cache_destroy(deleg_slab); |
NeilBrown | e60d439 | 2005-06-23 22:03:01 -0700 | [diff] [blame] | 2631 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | |
Bryan Schumaker | 7208339 | 2011-11-01 15:24:59 -0400 | [diff] [blame] | 2633 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2634 | nfsd4_init_slabs(void) |
| 2635 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2636 | openowner_slab = kmem_cache_create("nfsd4_openowners", |
| 2637 | sizeof(struct nfs4_openowner), 0, 0, NULL); |
| 2638 | if (openowner_slab == NULL) |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2639 | goto out; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2640 | lockowner_slab = kmem_cache_create("nfsd4_lockowners", |
Yanchuan Nian | 3c40794 | 2012-10-24 14:44:19 +0800 | [diff] [blame] | 2641 | sizeof(struct nfs4_lockowner), 0, 0, NULL); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2642 | if (lockowner_slab == NULL) |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2643 | goto out_free_openowner_slab; |
NeilBrown | e60d439 | 2005-06-23 22:03:01 -0700 | [diff] [blame] | 2644 | file_slab = kmem_cache_create("nfsd4_files", |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 2645 | sizeof(struct nfs4_file), 0, 0, NULL); |
NeilBrown | e60d439 | 2005-06-23 22:03:01 -0700 | [diff] [blame] | 2646 | if (file_slab == NULL) |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2647 | goto out_free_lockowner_slab; |
NeilBrown | 5ac049a | 2005-06-23 22:03:03 -0700 | [diff] [blame] | 2648 | stateid_slab = kmem_cache_create("nfsd4_stateids", |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 2649 | sizeof(struct nfs4_ol_stateid), 0, 0, NULL); |
NeilBrown | 5ac049a | 2005-06-23 22:03:03 -0700 | [diff] [blame] | 2650 | if (stateid_slab == NULL) |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2651 | goto out_free_file_slab; |
NeilBrown | 5b2d21c | 2005-06-23 22:03:04 -0700 | [diff] [blame] | 2652 | deleg_slab = kmem_cache_create("nfsd4_delegations", |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 2653 | sizeof(struct nfs4_delegation), 0, 0, NULL); |
NeilBrown | 5b2d21c | 2005-06-23 22:03:04 -0700 | [diff] [blame] | 2654 | if (deleg_slab == NULL) |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2655 | goto out_free_stateid_slab; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2656 | return 0; |
Christoph Hellwig | abf1135 | 2014-05-21 07:43:03 -0700 | [diff] [blame] | 2657 | |
| 2658 | out_free_stateid_slab: |
| 2659 | kmem_cache_destroy(stateid_slab); |
| 2660 | out_free_file_slab: |
| 2661 | kmem_cache_destroy(file_slab); |
| 2662 | out_free_lockowner_slab: |
| 2663 | kmem_cache_destroy(lockowner_slab); |
| 2664 | out_free_openowner_slab: |
| 2665 | kmem_cache_destroy(openowner_slab); |
| 2666 | out: |
NeilBrown | e60d439 | 2005-06-23 22:03:01 -0700 | [diff] [blame] | 2667 | dprintk("nfsd4: out of memory while initializing nfsv4\n"); |
| 2668 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | } |
| 2670 | |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2671 | static void init_nfs4_replay(struct nfs4_replay *rp) |
| 2672 | { |
| 2673 | rp->rp_status = nfserr_serverfault; |
| 2674 | rp->rp_buflen = 0; |
| 2675 | rp->rp_buf = rp->rp_ibuf; |
| 2676 | } |
| 2677 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2678 | static inline void *alloc_stateowner(struct kmem_cache *slab, struct xdr_netobj *owner, struct nfs4_client *clp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | { |
| 2680 | struct nfs4_stateowner *sop; |
| 2681 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2682 | sop = kmem_cache_alloc(slab, GFP_KERNEL); |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2683 | if (!sop) |
| 2684 | return NULL; |
| 2685 | |
| 2686 | sop->so_owner.data = kmemdup(owner->data, owner->len, GFP_KERNEL); |
| 2687 | if (!sop->so_owner.data) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2688 | kmem_cache_free(slab, sop); |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2689 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | } |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2691 | sop->so_owner.len = owner->len; |
| 2692 | |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2693 | INIT_LIST_HEAD(&sop->so_stateids); |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2694 | sop->so_client = clp; |
| 2695 | init_nfs4_replay(&sop->so_replay); |
| 2696 | return sop; |
| 2697 | } |
| 2698 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2699 | static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, unsigned int strhashval) |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 2700 | { |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 2701 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
| 2702 | |
| 2703 | list_add(&oo->oo_owner.so_strhash, &nn->ownerstr_hashtbl[strhashval]); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2704 | list_add(&oo->oo_perclient, &clp->cl_openowners); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | } |
| 2706 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2707 | static struct nfs4_openowner * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | alloc_init_open_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfsd4_open *open) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2709 | struct nfs4_openowner *oo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2710 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2711 | oo = alloc_stateowner(openowner_slab, &open->op_owner, clp); |
| 2712 | if (!oo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2713 | return NULL; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2714 | oo->oo_owner.so_is_open_owner = 1; |
| 2715 | oo->oo_owner.so_seqid = open->op_seqid; |
J. Bruce Fields | d29b20c | 2011-10-13 15:12:59 -0400 | [diff] [blame] | 2716 | oo->oo_flags = NFS4_OO_NEW; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2717 | oo->oo_time = 0; |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 2718 | oo->oo_last_closed_stid = NULL; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2719 | INIT_LIST_HEAD(&oo->oo_close_lru); |
| 2720 | hash_openowner(oo, clp, strhashval); |
| 2721 | return oo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2722 | } |
| 2723 | |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 2724 | static void init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *open) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2725 | struct nfs4_openowner *oo = open->op_openowner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2726 | |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 2727 | stp->st_stid.sc_type = NFS4_OPEN_STID; |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 2728 | INIT_LIST_HEAD(&stp->st_lockowners); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2729 | list_add(&stp->st_perstateowner, &oo->oo_owner.so_stateids); |
NeilBrown | 8beefa2 | 2005-06-23 22:03:08 -0700 | [diff] [blame] | 2730 | list_add(&stp->st_perfile, &fp->fi_stateids); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2731 | stp->st_stateowner = &oo->oo_owner; |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2732 | get_nfs4_file(fp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | stp->st_file = fp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | stp->st_access_bmap = 0; |
| 2735 | stp->st_deny_bmap = 0; |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 2736 | set_access(open->op_share_access, stp); |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 2737 | set_deny(open->op_share_deny, stp); |
NeilBrown | 4c4cd22 | 2005-07-07 17:59:27 -0700 | [diff] [blame] | 2738 | stp->st_openstp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2739 | } |
| 2740 | |
| 2741 | static void |
Stanislav Kinsbursky | 73758fed | 2012-11-14 18:22:01 +0300 | [diff] [blame] | 2742 | move_to_close_lru(struct nfs4_openowner *oo, struct net *net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2743 | { |
Stanislav Kinsbursky | 73758fed | 2012-11-14 18:22:01 +0300 | [diff] [blame] | 2744 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
| 2745 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2746 | dprintk("NFSD: move_to_close_lru nfs4_openowner %p\n", oo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | |
Stanislav Kinsbursky | 73758fed | 2012-11-14 18:22:01 +0300 | [diff] [blame] | 2748 | list_move_tail(&oo->oo_close_lru, &nn->close_lru); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2749 | oo->oo_time = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2750 | } |
| 2751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | static int |
J. Bruce Fields | 599e0a2 | 2007-07-26 17:04:54 -0400 | [diff] [blame] | 2753 | same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner, |
| 2754 | clientid_t *clid) |
| 2755 | { |
| 2756 | return (sop->so_owner.len == owner->len) && |
| 2757 | 0 == memcmp(sop->so_owner.data, owner->data, owner->len) && |
| 2758 | (sop->so_client->cl_clientid.cl_id == clid->cl_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | } |
| 2760 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2761 | static struct nfs4_openowner * |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 2762 | find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open, |
| 2763 | bool sessions, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | { |
J. Bruce Fields | a50d2ad | 2011-10-12 16:24:27 -0400 | [diff] [blame] | 2765 | struct nfs4_stateowner *so; |
| 2766 | struct nfs4_openowner *oo; |
J. Bruce Fields | d15c077 | 2012-09-13 16:19:31 -0400 | [diff] [blame] | 2767 | struct nfs4_client *clp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 2769 | list_for_each_entry(so, &nn->ownerstr_hashtbl[hashval], so_strhash) { |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 2770 | if (!so->so_is_open_owner) |
| 2771 | continue; |
J. Bruce Fields | a50d2ad | 2011-10-12 16:24:27 -0400 | [diff] [blame] | 2772 | if (same_owner_str(so, &open->op_owner, &open->op_clientid)) { |
| 2773 | oo = openowner(so); |
J. Bruce Fields | d15c077 | 2012-09-13 16:19:31 -0400 | [diff] [blame] | 2774 | clp = oo->oo_owner.so_client; |
| 2775 | if ((bool)clp->cl_minorversion != sessions) |
| 2776 | return NULL; |
J. Bruce Fields | a50d2ad | 2011-10-12 16:24:27 -0400 | [diff] [blame] | 2777 | renew_client(oo->oo_owner.so_client); |
| 2778 | return oo; |
| 2779 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | } |
| 2781 | return NULL; |
| 2782 | } |
| 2783 | |
| 2784 | /* search file_hashtbl[] for file */ |
| 2785 | static struct nfs4_file * |
| 2786 | find_file(struct inode *ino) |
| 2787 | { |
| 2788 | unsigned int hashval = file_hashval(ino); |
| 2789 | struct nfs4_file *fp; |
| 2790 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2791 | spin_lock(&state_lock); |
Jeff Layton | 89876f8 | 2013-04-02 09:01:59 -0400 | [diff] [blame] | 2792 | hlist_for_each_entry(fp, &file_hashtbl[hashval], fi_hash) { |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2793 | if (fp->fi_inode == ino) { |
| 2794 | get_nfs4_file(fp); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2795 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2796 | return fp; |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2797 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | } |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2799 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2800 | return NULL; |
| 2801 | } |
| 2802 | |
J. Bruce Fields | 4f83aa3 | 2008-07-07 15:02:02 -0400 | [diff] [blame] | 2803 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2804 | * Called to check deny when READ with all zero stateid or |
| 2805 | * WRITE with all zero or all one stateid |
| 2806 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2807 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | nfs4_share_conflict(struct svc_fh *current_fh, unsigned int deny_type) |
| 2809 | { |
| 2810 | struct inode *ino = current_fh->fh_dentry->d_inode; |
| 2811 | struct nfs4_file *fp; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 2812 | struct nfs4_ol_stateid *stp; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2813 | __be32 ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2815 | fp = find_file(ino); |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2816 | if (!fp) |
| 2817 | return nfs_ok; |
NeilBrown | b700949 | 2005-07-07 17:59:23 -0700 | [diff] [blame] | 2818 | ret = nfserr_locked; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2819 | /* Search for conflicting share reservations */ |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2820 | list_for_each_entry(stp, &fp->fi_stateids, st_perfile) { |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 2821 | if (test_deny(deny_type, stp) || |
| 2822 | test_deny(NFS4_SHARE_DENY_BOTH, stp)) |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2823 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | } |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 2825 | ret = nfs_ok; |
| 2826 | out: |
| 2827 | put_nfs4_file(fp); |
| 2828 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2829 | } |
| 2830 | |
J. Bruce Fields | 6b57d9c | 2011-01-31 11:54:04 -0500 | [diff] [blame] | 2831 | static void nfsd_break_one_deleg(struct nfs4_delegation *dp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | { |
J. Bruce Fields | e8c69d1 | 2013-03-21 15:19:33 -0400 | [diff] [blame] | 2833 | struct nfs4_client *clp = dp->dl_stid.sc_client; |
| 2834 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
| 2835 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2836 | lockdep_assert_held(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | /* We're assuming the state code never drops its reference |
| 2838 | * without first removing the lease. Since we're in this lease |
| 2839 | * callback (and since the lease code is serialized by the kernel |
| 2840 | * lock) we know the server hasn't removed the lease yet, we know |
| 2841 | * it's safe to take a reference: */ |
| 2842 | atomic_inc(&dp->dl_count); |
| 2843 | |
J. Bruce Fields | e8c69d1 | 2013-03-21 15:19:33 -0400 | [diff] [blame] | 2844 | list_add_tail(&dp->dl_recall_lru, &nn->del_recall_lru); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2845 | |
Jeff Layton | 1c8c601 | 2013-06-21 08:58:15 -0400 | [diff] [blame] | 2846 | /* Only place dl_time is set; protected by i_lock: */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2847 | dp->dl_time = get_seconds(); |
| 2848 | |
NeilBrown | 6282cd5 | 2014-06-04 17:39:26 +1000 | [diff] [blame] | 2849 | block_delegations(&dp->dl_fh); |
| 2850 | |
J. Bruce Fields | 6b57d9c | 2011-01-31 11:54:04 -0500 | [diff] [blame] | 2851 | nfsd4_cb_recall(dp); |
| 2852 | } |
| 2853 | |
Jeff Layton | 1c8c601 | 2013-06-21 08:58:15 -0400 | [diff] [blame] | 2854 | /* Called from break_lease() with i_lock held. */ |
J. Bruce Fields | 6b57d9c | 2011-01-31 11:54:04 -0500 | [diff] [blame] | 2855 | static void nfsd_break_deleg_cb(struct file_lock *fl) |
| 2856 | { |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 2857 | struct nfs4_file *fp = (struct nfs4_file *)fl->fl_owner; |
| 2858 | struct nfs4_delegation *dp; |
J. Bruce Fields | 6b57d9c | 2011-01-31 11:54:04 -0500 | [diff] [blame] | 2859 | |
J. Bruce Fields | 7fa10cd | 2012-10-16 12:39:33 -0400 | [diff] [blame] | 2860 | if (!fp) { |
| 2861 | WARN(1, "(%p)->fl_owner NULL\n", fl); |
| 2862 | return; |
| 2863 | } |
| 2864 | if (fp->fi_had_conflict) { |
| 2865 | WARN(1, "duplicate break on %p\n", fp); |
| 2866 | return; |
| 2867 | } |
J. Bruce Fields | 0272e1f | 2007-09-12 18:56:12 -0400 | [diff] [blame] | 2868 | /* |
| 2869 | * We don't want the locks code to timeout the lease for us; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 2870 | * we'll remove it ourself if a delegation isn't returned |
J. Bruce Fields | 6b57d9c | 2011-01-31 11:54:04 -0500 | [diff] [blame] | 2871 | * in time: |
J. Bruce Fields | 0272e1f | 2007-09-12 18:56:12 -0400 | [diff] [blame] | 2872 | */ |
| 2873 | fl->fl_break_time = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2875 | spin_lock(&state_lock); |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 2876 | fp->fi_had_conflict = true; |
| 2877 | list_for_each_entry(dp, &fp->fi_delegations, dl_perfile) |
| 2878 | nfsd_break_one_deleg(dp); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 2879 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | } |
| 2881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | static |
| 2883 | int nfsd_change_deleg_cb(struct file_lock **onlist, int arg) |
| 2884 | { |
| 2885 | if (arg & F_UNLCK) |
| 2886 | return lease_modify(onlist, arg); |
| 2887 | else |
| 2888 | return -EAGAIN; |
| 2889 | } |
| 2890 | |
Alexey Dobriyan | 7b02196 | 2009-09-21 17:01:12 -0700 | [diff] [blame] | 2891 | static const struct lock_manager_operations nfsd_lease_mng_ops = { |
J. Bruce Fields | 8fb47a4 | 2011-07-20 20:21:59 -0400 | [diff] [blame] | 2892 | .lm_break = nfsd_break_deleg_cb, |
| 2893 | .lm_change = nfsd_change_deleg_cb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | }; |
| 2895 | |
J. Bruce Fields | 7a8711c | 2011-09-02 09:03:37 -0400 | [diff] [blame] | 2896 | static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4_stateowner *so, u32 seqid) |
| 2897 | { |
| 2898 | if (nfsd4_has_session(cstate)) |
| 2899 | return nfs_ok; |
| 2900 | if (seqid == so->so_seqid - 1) |
| 2901 | return nfserr_replay_me; |
| 2902 | if (seqid == so->so_seqid) |
| 2903 | return nfs_ok; |
| 2904 | return nfserr_bad_seqid; |
| 2905 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2906 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2907 | __be32 |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 2908 | nfsd4_process_open1(struct nfsd4_compound_state *cstate, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 2909 | struct nfsd4_open *open, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2910 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2911 | clientid_t *clientid = &open->op_clientid; |
| 2912 | struct nfs4_client *clp = NULL; |
| 2913 | unsigned int strhashval; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2914 | struct nfs4_openowner *oo = NULL; |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 2915 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 2917 | if (STALE_CLIENTID(&open->op_clientid, nn)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2918 | return nfserr_stale_clientid; |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 2919 | /* |
| 2920 | * In case we need it later, after we've already created the |
| 2921 | * file and don't want to risk a further failure: |
| 2922 | */ |
| 2923 | open->op_file = nfsd4_alloc_file(); |
| 2924 | if (open->op_file == NULL) |
| 2925 | return nfserr_jukebox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2926 | |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 2927 | strhashval = ownerstr_hashval(clientid->cl_id, &open->op_owner); |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 2928 | oo = find_openstateowner_str(strhashval, open, cstate->minorversion, nn); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2929 | open->op_openowner = oo; |
| 2930 | if (!oo) { |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 2931 | clp = find_confirmed_client(clientid, cstate->minorversion, |
| 2932 | nn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | if (clp == NULL) |
J. Bruce Fields | 0f442aa | 2006-01-18 17:43:34 -0800 | [diff] [blame] | 2934 | return nfserr_expired; |
J. Bruce Fields | bcf130f | 2011-10-12 20:44:20 -0400 | [diff] [blame] | 2935 | goto new_owner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2936 | } |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 2937 | if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) { |
J. Bruce Fields | 0f442aa | 2006-01-18 17:43:34 -0800 | [diff] [blame] | 2938 | /* Replace unconfirmed owners without checking for replay. */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 2939 | clp = oo->oo_owner.so_client; |
| 2940 | release_openowner(oo); |
| 2941 | open->op_openowner = NULL; |
J. Bruce Fields | bcf130f | 2011-10-12 20:44:20 -0400 | [diff] [blame] | 2942 | goto new_owner; |
J. Bruce Fields | 0f442aa | 2006-01-18 17:43:34 -0800 | [diff] [blame] | 2943 | } |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 2944 | status = nfsd4_check_seqid(cstate, &oo->oo_owner, open->op_seqid); |
| 2945 | if (status) |
| 2946 | return status; |
| 2947 | clp = oo->oo_owner.so_client; |
| 2948 | goto alloc_stateid; |
J. Bruce Fields | bcf130f | 2011-10-12 20:44:20 -0400 | [diff] [blame] | 2949 | new_owner: |
| 2950 | oo = alloc_init_open_stateowner(strhashval, clp, open); |
| 2951 | if (oo == NULL) |
| 2952 | return nfserr_jukebox; |
| 2953 | open->op_openowner = oo; |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 2954 | alloc_stateid: |
| 2955 | open->op_stp = nfs4_alloc_stateid(clp); |
| 2956 | if (!open->op_stp) |
| 2957 | return nfserr_jukebox; |
J. Bruce Fields | 0f442aa | 2006-01-18 17:43:34 -0800 | [diff] [blame] | 2958 | return nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | } |
| 2960 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2961 | static inline __be32 |
NeilBrown | 4a6e43e | 2005-06-23 22:02:50 -0700 | [diff] [blame] | 2962 | nfs4_check_delegmode(struct nfs4_delegation *dp, int flags) |
| 2963 | { |
| 2964 | if ((flags & WR_STATE) && (dp->dl_type == NFS4_OPEN_DELEGATE_READ)) |
| 2965 | return nfserr_openmode; |
| 2966 | else |
| 2967 | return nfs_ok; |
| 2968 | } |
| 2969 | |
Daniel Mack | c47d832 | 2011-05-16 16:38:14 +0200 | [diff] [blame] | 2970 | static int share_access_to_flags(u32 share_access) |
J. Bruce Fields | 24a0111 | 2010-05-18 20:01:35 -0400 | [diff] [blame] | 2971 | { |
J. Bruce Fields | 24a0111 | 2010-05-18 20:01:35 -0400 | [diff] [blame] | 2972 | return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE; |
| 2973 | } |
| 2974 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 2975 | static struct nfs4_delegation *find_deleg_stateid(struct nfs4_client *cl, stateid_t *s) |
J. Bruce Fields | f459e45 | 2011-09-09 09:06:12 -0400 | [diff] [blame] | 2976 | { |
| 2977 | struct nfs4_stid *ret; |
| 2978 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 2979 | ret = find_stateid_by_type(cl, s, NFS4_DELEG_STID); |
J. Bruce Fields | f459e45 | 2011-09-09 09:06:12 -0400 | [diff] [blame] | 2980 | if (!ret) |
| 2981 | return NULL; |
| 2982 | return delegstateid(ret); |
| 2983 | } |
| 2984 | |
J. Bruce Fields | 8b289b2 | 2011-10-19 11:52:12 -0400 | [diff] [blame] | 2985 | static bool nfsd4_is_deleg_cur(struct nfsd4_open *open) |
| 2986 | { |
| 2987 | return open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR || |
| 2988 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH; |
| 2989 | } |
| 2990 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2991 | static __be32 |
J. Bruce Fields | 41d2266 | 2013-03-21 15:49:47 -0400 | [diff] [blame] | 2992 | nfs4_check_deleg(struct nfs4_client *cl, struct nfsd4_open *open, |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 2993 | struct nfs4_delegation **dp) |
| 2994 | { |
| 2995 | int flags; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2996 | __be32 status = nfserr_bad_stateid; |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 2997 | |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 2998 | *dp = find_deleg_stateid(cl, &open->op_delegate_stateid); |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 2999 | if (*dp == NULL) |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3000 | goto out; |
J. Bruce Fields | 24a0111 | 2010-05-18 20:01:35 -0400 | [diff] [blame] | 3001 | flags = share_access_to_flags(open->op_share_access); |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 3002 | status = nfs4_check_delegmode(*dp, flags); |
| 3003 | if (status) |
| 3004 | *dp = NULL; |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3005 | out: |
J. Bruce Fields | 8b289b2 | 2011-10-19 11:52:12 -0400 | [diff] [blame] | 3006 | if (!nfsd4_is_deleg_cur(open)) |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3007 | return nfs_ok; |
| 3008 | if (status) |
| 3009 | return status; |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3010 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3011 | return nfs_ok; |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 3012 | } |
| 3013 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3014 | static __be32 |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3015 | nfs4_check_open(struct nfs4_file *fp, struct nfsd4_open *open, struct nfs4_ol_stateid **stpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3016 | { |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3017 | struct nfs4_ol_stateid *local; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3018 | struct nfs4_openowner *oo = open->op_openowner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3019 | |
NeilBrown | 8beefa2 | 2005-06-23 22:03:08 -0700 | [diff] [blame] | 3020 | list_for_each_entry(local, &fp->fi_stateids, st_perfile) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3021 | /* ignore lock owners */ |
| 3022 | if (local->st_stateowner->so_is_open_owner == 0) |
| 3023 | continue; |
| 3024 | /* remember if we have seen this open owner */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3025 | if (local->st_stateowner == &oo->oo_owner) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | *stpp = local; |
| 3027 | /* check for conflicting share reservations */ |
| 3028 | if (!test_share(local, open)) |
J. Bruce Fields | 77eaae8 | 2011-09-02 12:08:20 -0400 | [diff] [blame] | 3029 | return nfserr_share_denied; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3030 | } |
J. Bruce Fields | 77eaae8 | 2011-09-02 12:08:20 -0400 | [diff] [blame] | 3031 | return nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3032 | } |
| 3033 | |
J. Bruce Fields | 21fb401 | 2010-07-28 12:21:23 -0400 | [diff] [blame] | 3034 | static inline int nfs4_access_to_access(u32 nfs4_access) |
| 3035 | { |
| 3036 | int flags = 0; |
| 3037 | |
| 3038 | if (nfs4_access & NFS4_SHARE_ACCESS_READ) |
| 3039 | flags |= NFSD_MAY_READ; |
| 3040 | if (nfs4_access & NFS4_SHARE_ACCESS_WRITE) |
| 3041 | flags |= NFSD_MAY_WRITE; |
| 3042 | return flags; |
| 3043 | } |
| 3044 | |
Casey Bodley | 0c12eaf | 2011-07-23 14:58:10 -0400 | [diff] [blame] | 3045 | static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp, |
| 3046 | struct svc_fh *cur_fh, struct nfsd4_open *open) |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3047 | { |
| 3048 | __be32 status; |
Casey Bodley | 0c12eaf | 2011-07-23 14:58:10 -0400 | [diff] [blame] | 3049 | int oflag = nfs4_access_to_omode(open->op_share_access); |
| 3050 | int access = nfs4_access_to_access(open->op_share_access); |
| 3051 | |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3052 | if (!fp->fi_fds[oflag]) { |
| 3053 | status = nfsd_open(rqstp, cur_fh, S_IFREG, access, |
| 3054 | &fp->fi_fds[oflag]); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3055 | if (status) |
| 3056 | return status; |
| 3057 | } |
| 3058 | nfs4_file_get_access(fp, oflag); |
| 3059 | |
| 3060 | return nfs_ok; |
| 3061 | } |
| 3062 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3063 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3064 | nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh, |
| 3065 | struct nfsd4_open *open) |
| 3066 | { |
| 3067 | struct iattr iattr = { |
| 3068 | .ia_valid = ATTR_SIZE, |
| 3069 | .ia_size = 0, |
| 3070 | }; |
| 3071 | if (!open->op_truncate) |
| 3072 | return 0; |
| 3073 | if (!(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) |
Al Viro | 9246585 | 2006-01-18 17:43:46 -0800 | [diff] [blame] | 3074 | return nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3075 | return nfsd_setattr(rqstp, fh, &iattr, 0, (time_t)0); |
| 3076 | } |
| 3077 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3078 | static __be32 |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3079 | nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3080 | { |
J. Bruce Fields | b6d2f1c | 2011-10-10 17:44:19 -0400 | [diff] [blame] | 3081 | u32 op_share_access = open->op_share_access; |
J. Bruce Fields | 7d94784 | 2010-08-20 18:09:31 -0400 | [diff] [blame] | 3082 | bool new_access; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3083 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3084 | |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3085 | new_access = !test_access(op_share_access, stp); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3086 | if (new_access) { |
Casey Bodley | 0c12eaf | 2011-07-23 14:58:10 -0400 | [diff] [blame] | 3087 | status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3088 | if (status) |
| 3089 | return status; |
J. Bruce Fields | 6c26d08 | 2006-01-18 17:43:38 -0800 | [diff] [blame] | 3090 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3091 | status = nfsd4_truncate(rqstp, cur_fh, open); |
| 3092 | if (status) { |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3093 | if (new_access) { |
J. Bruce Fields | f197c27 | 2011-06-29 08:23:50 -0400 | [diff] [blame] | 3094 | int oflag = nfs4_access_to_omode(op_share_access); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3095 | nfs4_file_put_access(fp, oflag); |
| 3096 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3097 | return status; |
| 3098 | } |
| 3099 | /* remember the open */ |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3100 | set_access(op_share_access, stp); |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 3101 | set_deny(open->op_share_deny, stp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3102 | |
| 3103 | return nfs_ok; |
| 3104 | } |
| 3105 | |
| 3106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3107 | static void |
J. Bruce Fields | 1255a8f | 2012-03-06 14:35:16 -0500 | [diff] [blame] | 3108 | nfs4_set_claim_prev(struct nfsd4_open *open, bool has_session) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | { |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3110 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3111 | } |
| 3112 | |
J. Bruce Fields | 14a24e9 | 2010-12-10 19:02:49 -0500 | [diff] [blame] | 3113 | /* Should we give out recallable state?: */ |
| 3114 | static bool nfsd4_cb_channel_good(struct nfs4_client *clp) |
| 3115 | { |
| 3116 | if (clp->cl_cb_state == NFSD4_CB_UP) |
| 3117 | return true; |
| 3118 | /* |
| 3119 | * In the sessions case, since we don't have to establish a |
| 3120 | * separate connection for callbacks, we assume it's OK |
| 3121 | * until we hear otherwise: |
| 3122 | */ |
| 3123 | return clp->cl_minorversion && clp->cl_cb_state == NFSD4_CB_UNKNOWN; |
| 3124 | } |
| 3125 | |
J. Bruce Fields | 22d38c4 | 2011-01-31 11:55:12 -0500 | [diff] [blame] | 3126 | static struct file_lock *nfs4_alloc_init_lease(struct nfs4_delegation *dp, int flag) |
| 3127 | { |
| 3128 | struct file_lock *fl; |
| 3129 | |
| 3130 | fl = locks_alloc_lock(); |
| 3131 | if (!fl) |
| 3132 | return NULL; |
| 3133 | locks_init_lock(fl); |
| 3134 | fl->fl_lmops = &nfsd_lease_mng_ops; |
J. Bruce Fields | 617588d | 2011-07-01 15:18:34 -0400 | [diff] [blame] | 3135 | fl->fl_flags = FL_DELEG; |
J. Bruce Fields | 22d38c4 | 2011-01-31 11:55:12 -0500 | [diff] [blame] | 3136 | fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK; |
| 3137 | fl->fl_end = OFFSET_MAX; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3138 | fl->fl_owner = (fl_owner_t)(dp->dl_file); |
J. Bruce Fields | 22d38c4 | 2011-01-31 11:55:12 -0500 | [diff] [blame] | 3139 | fl->fl_pid = current->tgid; |
J. Bruce Fields | 22d38c4 | 2011-01-31 11:55:12 -0500 | [diff] [blame] | 3140 | return fl; |
| 3141 | } |
| 3142 | |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3143 | static int nfs4_setlease(struct nfs4_delegation *dp) |
J. Bruce Fields | edab978 | 2011-01-31 17:58:10 -0500 | [diff] [blame] | 3144 | { |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3145 | struct nfs4_file *fp = dp->dl_file; |
J. Bruce Fields | edab978 | 2011-01-31 17:58:10 -0500 | [diff] [blame] | 3146 | struct file_lock *fl; |
| 3147 | int status; |
| 3148 | |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3149 | fl = nfs4_alloc_init_lease(dp, NFS4_OPEN_DELEGATE_READ); |
J. Bruce Fields | edab978 | 2011-01-31 17:58:10 -0500 | [diff] [blame] | 3150 | if (!fl) |
| 3151 | return -ENOMEM; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3152 | fl->fl_file = find_readable_file(fp); |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3153 | status = vfs_setlease(fl->fl_file, fl->fl_type, &fl); |
J. Bruce Fields | e873088 | 2012-01-23 13:52:01 -0500 | [diff] [blame] | 3154 | if (status) |
| 3155 | goto out_free; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3156 | fp->fi_lease = fl; |
Al Viro | cb0942b | 2012-08-27 14:48:26 -0400 | [diff] [blame] | 3157 | fp->fi_deleg_file = get_file(fl->fl_file); |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3158 | atomic_set(&fp->fi_delegees, 1); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3159 | spin_lock(&state_lock); |
Benny Halevy | 931ee56 | 2014-05-30 09:09:27 -0400 | [diff] [blame] | 3160 | hash_delegation_locked(dp, fp); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3161 | spin_unlock(&state_lock); |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3162 | return 0; |
J. Bruce Fields | e873088 | 2012-01-23 13:52:01 -0500 | [diff] [blame] | 3163 | out_free: |
| 3164 | locks_free_lock(fl); |
| 3165 | return status; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3166 | } |
| 3167 | |
J. Bruce Fields | bf7bd3e | 2013-08-15 16:55:26 -0400 | [diff] [blame] | 3168 | static int nfs4_set_delegation(struct nfs4_delegation *dp, struct nfs4_file *fp) |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3169 | { |
J. Bruce Fields | bf7bd3e | 2013-08-15 16:55:26 -0400 | [diff] [blame] | 3170 | if (fp->fi_had_conflict) |
| 3171 | return -EAGAIN; |
| 3172 | get_nfs4_file(fp); |
| 3173 | dp->dl_file = fp; |
J. Bruce Fields | cbf7a75 | 2014-03-03 12:19:18 -0500 | [diff] [blame] | 3174 | if (!fp->fi_lease) |
| 3175 | return nfs4_setlease(dp); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3176 | spin_lock(&state_lock); |
J. Bruce Fields | cbf7a75 | 2014-03-03 12:19:18 -0500 | [diff] [blame] | 3177 | atomic_inc(&fp->fi_delegees); |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3178 | if (fp->fi_had_conflict) { |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3179 | spin_unlock(&state_lock); |
J. Bruce Fields | cbf7a75 | 2014-03-03 12:19:18 -0500 | [diff] [blame] | 3180 | return -EAGAIN; |
J. Bruce Fields | acfdf5c | 2011-01-31 19:20:39 -0500 | [diff] [blame] | 3181 | } |
Benny Halevy | 931ee56 | 2014-05-30 09:09:27 -0400 | [diff] [blame] | 3182 | hash_delegation_locked(dp, fp); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3183 | spin_unlock(&state_lock); |
J. Bruce Fields | edab978 | 2011-01-31 17:58:10 -0500 | [diff] [blame] | 3184 | return 0; |
| 3185 | } |
| 3186 | |
Benny Halevy | 4aa8913 | 2012-02-21 14:16:44 -0800 | [diff] [blame] | 3187 | static void nfsd4_open_deleg_none_ext(struct nfsd4_open *open, int status) |
| 3188 | { |
| 3189 | open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT; |
| 3190 | if (status == -EAGAIN) |
| 3191 | open->op_why_no_deleg = WND4_CONTENTION; |
| 3192 | else { |
| 3193 | open->op_why_no_deleg = WND4_RESOURCE; |
| 3194 | switch (open->op_deleg_want) { |
| 3195 | case NFS4_SHARE_WANT_READ_DELEG: |
| 3196 | case NFS4_SHARE_WANT_WRITE_DELEG: |
| 3197 | case NFS4_SHARE_WANT_ANY_DELEG: |
| 3198 | break; |
| 3199 | case NFS4_SHARE_WANT_CANCEL: |
| 3200 | open->op_why_no_deleg = WND4_CANCELLED; |
| 3201 | break; |
| 3202 | case NFS4_SHARE_WANT_NO_DELEG: |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 3203 | WARN_ON_ONCE(1); |
Benny Halevy | 4aa8913 | 2012-02-21 14:16:44 -0800 | [diff] [blame] | 3204 | } |
| 3205 | } |
| 3206 | } |
| 3207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3208 | /* |
| 3209 | * Attempt to hand out a delegation. |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3210 | * |
| 3211 | * Note we don't support write delegations, and won't until the vfs has |
| 3212 | * proper support for them. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3213 | */ |
| 3214 | static void |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3215 | nfs4_open_delegation(struct net *net, struct svc_fh *fh, |
| 3216 | struct nfsd4_open *open, struct nfs4_ol_stateid *stp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3217 | { |
| 3218 | struct nfs4_delegation *dp; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3219 | struct nfs4_openowner *oo = container_of(stp->st_stateowner, struct nfs4_openowner, oo_owner); |
J. Bruce Fields | 14a24e9 | 2010-12-10 19:02:49 -0500 | [diff] [blame] | 3220 | int cb_up; |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3221 | int status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3222 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3223 | cb_up = nfsd4_cb_channel_good(oo->oo_owner.so_client); |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 3224 | open->op_recall = 0; |
| 3225 | switch (open->op_claim_type) { |
| 3226 | case NFS4_OPEN_CLAIM_PREVIOUS: |
J. Bruce Fields | 2bf2387 | 2010-03-08 12:37:27 -0500 | [diff] [blame] | 3227 | if (!cb_up) |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 3228 | open->op_recall = 1; |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3229 | if (open->op_delegate_type != NFS4_OPEN_DELEGATE_READ) |
| 3230 | goto out_no_deleg; |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 3231 | break; |
| 3232 | case NFS4_OPEN_CLAIM_NULL: |
Ming Chen | ed47b06 | 2014-01-09 21:26:10 +0000 | [diff] [blame] | 3233 | case NFS4_OPEN_CLAIM_FH: |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3234 | /* |
| 3235 | * Let's not give out any delegations till everyone's |
| 3236 | * had the chance to reclaim theirs.... |
| 3237 | */ |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3238 | if (locks_in_grace(net)) |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3239 | goto out_no_deleg; |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3240 | if (!cb_up || !(oo->oo_flags & NFS4_OO_CONFIRMED)) |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3241 | goto out_no_deleg; |
Steve Dickson | 9a0590a | 2013-05-15 14:51:49 -0400 | [diff] [blame] | 3242 | /* |
| 3243 | * Also, if the file was opened for write or |
| 3244 | * create, there's a good chance the client's |
| 3245 | * about to write to it, resulting in an |
| 3246 | * immediate recall (since we don't support |
| 3247 | * write delegations): |
| 3248 | */ |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 3249 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3250 | goto out_no_deleg; |
| 3251 | if (open->op_create == NFS4_OPEN_CREATE) |
| 3252 | goto out_no_deleg; |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 3253 | break; |
| 3254 | default: |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3255 | goto out_no_deleg; |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 3256 | } |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3257 | dp = alloc_init_deleg(oo->oo_owner.so_client, stp, fh); |
J. Bruce Fields | dd239cc | 2011-01-31 17:14:55 -0500 | [diff] [blame] | 3258 | if (dp == NULL) |
| 3259 | goto out_no_deleg; |
J. Bruce Fields | bf7bd3e | 2013-08-15 16:55:26 -0400 | [diff] [blame] | 3260 | status = nfs4_set_delegation(dp, stp->st_file); |
J. Bruce Fields | edab978 | 2011-01-31 17:58:10 -0500 | [diff] [blame] | 3261 | if (status) |
J. Bruce Fields | dd239cc | 2011-01-31 17:14:55 -0500 | [diff] [blame] | 3262 | goto out_free; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3263 | |
J. Bruce Fields | d5477a8 | 2011-09-08 12:07:44 -0400 | [diff] [blame] | 3264 | memcpy(&open->op_delegate_stateid, &dp->dl_stid.sc_stateid, sizeof(dp->dl_stid.sc_stateid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3265 | |
Benny Halevy | 8c10cbd | 2009-10-19 12:04:53 +0200 | [diff] [blame] | 3266 | dprintk("NFSD: delegation stateid=" STATEID_FMT "\n", |
J. Bruce Fields | d5477a8 | 2011-09-08 12:07:44 -0400 | [diff] [blame] | 3267 | STATEID_VAL(&dp->dl_stid.sc_stateid)); |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3268 | open->op_delegate_type = NFS4_OPEN_DELEGATE_READ; |
J. Bruce Fields | dd239cc | 2011-01-31 17:14:55 -0500 | [diff] [blame] | 3269 | return; |
| 3270 | out_free: |
J. Bruce Fields | cbf7a75 | 2014-03-03 12:19:18 -0500 | [diff] [blame] | 3271 | destroy_delegation(dp); |
J. Bruce Fields | dd239cc | 2011-01-31 17:14:55 -0500 | [diff] [blame] | 3272 | out_no_deleg: |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3273 | open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE; |
| 3274 | if (open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS && |
J. Bruce Fields | d08d32e | 2013-06-21 11:05:32 -0400 | [diff] [blame] | 3275 | open->op_delegate_type != NFS4_OPEN_DELEGATE_NONE) { |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3276 | dprintk("NFSD: WARNING: refusing delegation reclaim\n"); |
J. Bruce Fields | d08d32e | 2013-06-21 11:05:32 -0400 | [diff] [blame] | 3277 | open->op_recall = 1; |
| 3278 | } |
J. Bruce Fields | 99c4151 | 2013-05-21 16:21:25 -0400 | [diff] [blame] | 3279 | |
| 3280 | /* 4.1 client asking for a delegation? */ |
| 3281 | if (open->op_deleg_want) |
| 3282 | nfsd4_open_deleg_none_ext(open, status); |
| 3283 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3284 | } |
| 3285 | |
Benny Halevy | e27f49c | 2012-02-21 14:16:54 -0800 | [diff] [blame] | 3286 | static void nfsd4_deleg_xgrade_none_ext(struct nfsd4_open *open, |
| 3287 | struct nfs4_delegation *dp) |
| 3288 | { |
| 3289 | if (open->op_deleg_want == NFS4_SHARE_WANT_READ_DELEG && |
| 3290 | dp->dl_type == NFS4_OPEN_DELEGATE_WRITE) { |
| 3291 | open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT; |
| 3292 | open->op_why_no_deleg = WND4_NOT_SUPP_DOWNGRADE; |
| 3293 | } else if (open->op_deleg_want == NFS4_SHARE_WANT_WRITE_DELEG && |
| 3294 | dp->dl_type == NFS4_OPEN_DELEGATE_WRITE) { |
| 3295 | open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT; |
| 3296 | open->op_why_no_deleg = WND4_NOT_SUPP_UPGRADE; |
| 3297 | } |
| 3298 | /* Otherwise the client must be confused wanting a delegation |
| 3299 | * it already has, therefore we don't return |
| 3300 | * NFS4_OPEN_DELEGATE_NONE_EXT and reason. |
| 3301 | */ |
| 3302 | } |
| 3303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3304 | /* |
| 3305 | * called with nfs4_lock_state() held. |
| 3306 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3307 | __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3308 | nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
| 3309 | { |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 3310 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3311 | struct nfs4_client *cl = open->op_openowner->oo_owner.so_client; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3312 | struct nfs4_file *fp = NULL; |
| 3313 | struct inode *ino = current_fh->fh_dentry->d_inode; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3314 | struct nfs4_ol_stateid *stp = NULL; |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 3315 | struct nfs4_delegation *dp = NULL; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3316 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3318 | /* |
| 3319 | * Lookup file; if found, lookup stateid and check open request, |
| 3320 | * and check for delegations in the process of being recalled. |
| 3321 | * If not found, create the nfs4_file struct |
| 3322 | */ |
| 3323 | fp = find_file(ino); |
| 3324 | if (fp) { |
| 3325 | if ((status = nfs4_check_open(fp, open, &stp))) |
| 3326 | goto out; |
J. Bruce Fields | 41d2266 | 2013-03-21 15:49:47 -0400 | [diff] [blame] | 3327 | status = nfs4_check_deleg(cl, open, &dp); |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3328 | if (status) |
| 3329 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3330 | } else { |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3331 | status = nfserr_bad_stateid; |
J. Bruce Fields | 8b289b2 | 2011-10-19 11:52:12 -0400 | [diff] [blame] | 3332 | if (nfsd4_is_deleg_cur(open)) |
NeilBrown | c44c5ee | 2005-06-23 22:02:54 -0700 | [diff] [blame] | 3333 | goto out; |
J. Bruce Fields | 3e77246 | 2011-08-10 19:07:33 -0400 | [diff] [blame] | 3334 | status = nfserr_jukebox; |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 3335 | fp = open->op_file; |
| 3336 | open->op_file = NULL; |
| 3337 | nfsd4_init_file(fp, ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3338 | } |
| 3339 | |
| 3340 | /* |
| 3341 | * OPEN the file, or upgrade an existing OPEN. |
| 3342 | * If truncate fails, the OPEN fails. |
| 3343 | */ |
| 3344 | if (stp) { |
| 3345 | /* Stateid was found, this is an OPEN upgrade */ |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3346 | status = nfs4_upgrade_open(rqstp, fp, current_fh, stp, open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3347 | if (status) |
| 3348 | goto out; |
| 3349 | } else { |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 3350 | status = nfs4_get_vfs_file(rqstp, fp, current_fh, open); |
NeilBrown | 567d982 | 2005-06-23 22:02:53 -0700 | [diff] [blame] | 3351 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3352 | goto out; |
J. Bruce Fields | 4af8250 | 2012-06-07 17:30:45 -0400 | [diff] [blame] | 3353 | status = nfsd4_truncate(rqstp, current_fh, open); |
| 3354 | if (status) |
| 3355 | goto out; |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 3356 | stp = open->op_stp; |
| 3357 | open->op_stp = NULL; |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 3358 | init_open_stateid(stp, fp, open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3359 | } |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3360 | update_stateid(&stp->st_stid.sc_stateid); |
| 3361 | memcpy(&open->op_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3362 | |
Benny Halevy | d24433c | 2012-02-16 20:57:17 +0200 | [diff] [blame] | 3363 | if (nfsd4_has_session(&resp->cstate)) { |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3364 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 3365 | |
Benny Halevy | d24433c | 2012-02-16 20:57:17 +0200 | [diff] [blame] | 3366 | if (open->op_deleg_want & NFS4_SHARE_WANT_NO_DELEG) { |
| 3367 | open->op_delegate_type = NFS4_OPEN_DELEGATE_NONE_EXT; |
| 3368 | open->op_why_no_deleg = WND4_NOT_WANTED; |
| 3369 | goto nodeleg; |
| 3370 | } |
| 3371 | } |
| 3372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3373 | /* |
| 3374 | * Attempt to hand out a delegation. No error return, because the |
| 3375 | * OPEN succeeds even if we fail. |
| 3376 | */ |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3377 | nfs4_open_delegation(SVC_NET(rqstp), current_fh, open, stp); |
Benny Halevy | d24433c | 2012-02-16 20:57:17 +0200 | [diff] [blame] | 3378 | nodeleg: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3379 | status = nfs_ok; |
| 3380 | |
Benny Halevy | 8c10cbd | 2009-10-19 12:04:53 +0200 | [diff] [blame] | 3381 | dprintk("%s: stateid=" STATEID_FMT "\n", __func__, |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3382 | STATEID_VAL(&stp->st_stid.sc_stateid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3383 | out: |
Benny Halevy | d24433c | 2012-02-16 20:57:17 +0200 | [diff] [blame] | 3384 | /* 4.1 client trying to upgrade/downgrade delegation? */ |
| 3385 | if (open->op_delegate_type == NFS4_OPEN_DELEGATE_NONE && dp && |
Benny Halevy | e27f49c | 2012-02-21 14:16:54 -0800 | [diff] [blame] | 3386 | open->op_deleg_want) |
| 3387 | nfsd4_deleg_xgrade_none_ext(open, dp); |
Benny Halevy | d24433c | 2012-02-16 20:57:17 +0200 | [diff] [blame] | 3388 | |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 3389 | if (fp) |
| 3390 | put_nfs4_file(fp); |
NeilBrown | 3751517 | 2005-07-07 17:59:16 -0700 | [diff] [blame] | 3391 | if (status == 0 && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | 1255a8f | 2012-03-06 14:35:16 -0500 | [diff] [blame] | 3392 | nfs4_set_claim_prev(open, nfsd4_has_session(&resp->cstate)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3393 | /* |
| 3394 | * To finish the open response, we just need to set the rflags. |
| 3395 | */ |
| 3396 | open->op_rflags = NFS4_OPEN_RESULT_LOCKTYPE_POSIX; |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3397 | if (!(open->op_openowner->oo_flags & NFS4_OO_CONFIRMED) && |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 3398 | !nfsd4_has_session(&resp->cstate)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3399 | open->op_rflags |= NFS4_OPEN_RESULT_CONFIRM; |
| 3400 | |
| 3401 | return status; |
| 3402 | } |
| 3403 | |
J. Bruce Fields | d29b20c | 2011-10-13 15:12:59 -0400 | [diff] [blame] | 3404 | void nfsd4_cleanup_open_state(struct nfsd4_open *open, __be32 status) |
| 3405 | { |
| 3406 | if (open->op_openowner) { |
| 3407 | struct nfs4_openowner *oo = open->op_openowner; |
| 3408 | |
| 3409 | if (!list_empty(&oo->oo_owner.so_stateids)) |
| 3410 | list_del_init(&oo->oo_close_lru); |
| 3411 | if (oo->oo_flags & NFS4_OO_NEW) { |
| 3412 | if (status) { |
| 3413 | release_openowner(oo); |
| 3414 | open->op_openowner = NULL; |
| 3415 | } else |
| 3416 | oo->oo_flags &= ~NFS4_OO_NEW; |
| 3417 | } |
| 3418 | } |
J. Bruce Fields | 32513b4 | 2011-10-13 16:00:16 -0400 | [diff] [blame] | 3419 | if (open->op_file) |
| 3420 | nfsd4_free_file(open->op_file); |
J. Bruce Fields | 4cdc951 | 2011-10-17 15:57:47 -0400 | [diff] [blame] | 3421 | if (open->op_stp) |
J. Bruce Fields | ef79859 | 2012-08-29 10:32:54 -0700 | [diff] [blame] | 3422 | free_generic_stateid(open->op_stp); |
J. Bruce Fields | d29b20c | 2011-10-13 15:12:59 -0400 | [diff] [blame] | 3423 | } |
| 3424 | |
J. Bruce Fields | 9b2ef62 | 2012-12-03 17:24:41 -0500 | [diff] [blame] | 3425 | static __be32 lookup_clientid(clientid_t *clid, bool session, struct nfsd_net *nn, struct nfs4_client **clp) |
| 3426 | { |
| 3427 | struct nfs4_client *found; |
| 3428 | |
| 3429 | if (STALE_CLIENTID(clid, nn)) |
| 3430 | return nfserr_stale_clientid; |
| 3431 | found = find_confirmed_client(clid, session, nn); |
| 3432 | if (clp) |
| 3433 | *clp = found; |
| 3434 | return found ? nfs_ok : nfserr_expired; |
| 3435 | } |
| 3436 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3437 | __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 3438 | nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 3439 | clientid_t *clid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3440 | { |
| 3441 | struct nfs4_client *clp; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3442 | __be32 status; |
Stanislav Kinsbursky | 7f2210f | 2012-11-14 18:21:05 +0300 | [diff] [blame] | 3443 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3444 | |
| 3445 | nfs4_lock_state(); |
| 3446 | dprintk("process_renew(%08x/%08x): starting\n", |
| 3447 | clid->cl_boot, clid->cl_id); |
J. Bruce Fields | 9b2ef62 | 2012-12-03 17:24:41 -0500 | [diff] [blame] | 3448 | status = lookup_clientid(clid, cstate->minorversion, nn, &clp); |
| 3449 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3450 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3451 | status = nfserr_cb_path_down; |
NeilBrown | ea1da63 | 2005-06-23 22:04:17 -0700 | [diff] [blame] | 3452 | if (!list_empty(&clp->cl_delegations) |
J. Bruce Fields | 77a3569 | 2010-04-30 18:51:44 -0400 | [diff] [blame] | 3453 | && clp->cl_cb_state != NFSD4_CB_UP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3454 | goto out; |
| 3455 | status = nfs_ok; |
| 3456 | out: |
| 3457 | nfs4_unlock_state(); |
| 3458 | return status; |
| 3459 | } |
| 3460 | |
NeilBrown | a76b431 | 2005-06-23 22:04:01 -0700 | [diff] [blame] | 3461 | static void |
Stanislav Kinsbursky | 12760c6 | 2012-11-14 18:22:12 +0300 | [diff] [blame] | 3462 | nfsd4_end_grace(struct nfsd_net *nn) |
NeilBrown | a76b431 | 2005-06-23 22:04:01 -0700 | [diff] [blame] | 3463 | { |
Jeff Layton | 33dcc48 | 2012-04-10 11:08:48 -0400 | [diff] [blame] | 3464 | /* do nothing if grace period already ended */ |
Stanislav Kinsbursky | a51c84e | 2012-07-25 16:57:37 +0400 | [diff] [blame] | 3465 | if (nn->grace_ended) |
Jeff Layton | 33dcc48 | 2012-04-10 11:08:48 -0400 | [diff] [blame] | 3466 | return; |
| 3467 | |
NeilBrown | a76b431 | 2005-06-23 22:04:01 -0700 | [diff] [blame] | 3468 | dprintk("NFSD: end of grace period\n"); |
Stanislav Kinsbursky | a51c84e | 2012-07-25 16:57:37 +0400 | [diff] [blame] | 3469 | nn->grace_ended = true; |
Stanislav Kinsbursky | 12760c6 | 2012-11-14 18:22:12 +0300 | [diff] [blame] | 3470 | nfsd4_record_grace_done(nn, nn->boot_time); |
Stanislav Kinsbursky | 5e1533c | 2012-07-25 16:56:58 +0400 | [diff] [blame] | 3471 | locks_end_grace(&nn->nfsd4_manager); |
J. Bruce Fields | e46b498 | 2010-03-01 19:21:21 -0500 | [diff] [blame] | 3472 | /* |
| 3473 | * Now that every NFSv4 client has had the chance to recover and |
| 3474 | * to see the (possibly new, possibly shorter) lease time, we |
| 3475 | * can safely set the next grace time to the current lease time: |
| 3476 | */ |
Stanislav Kinsbursky | 5284b44 | 2012-11-27 14:11:49 +0300 | [diff] [blame] | 3477 | nn->nfsd4_grace = nn->nfsd4_lease; |
NeilBrown | a76b431 | 2005-06-23 22:04:01 -0700 | [diff] [blame] | 3478 | } |
| 3479 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 3480 | static time_t |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 3481 | nfs4_laundromat(struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3482 | { |
| 3483 | struct nfs4_client *clp; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3484 | struct nfs4_openowner *oo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3485 | struct nfs4_delegation *dp; |
| 3486 | struct list_head *pos, *next, reaplist; |
Stanislav Kinsbursky | 3d73371 | 2012-11-27 14:11:44 +0300 | [diff] [blame] | 3487 | time_t cutoff = get_seconds() - nn->nfsd4_lease; |
Jeff Layton | a832e7a | 2014-05-30 09:09:26 -0400 | [diff] [blame] | 3488 | time_t t, new_timeo = nn->nfsd4_lease; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3489 | |
| 3490 | nfs4_lock_state(); |
| 3491 | |
| 3492 | dprintk("NFSD: laundromat service - starting\n"); |
Stanislav Kinsbursky | 12760c6 | 2012-11-14 18:22:12 +0300 | [diff] [blame] | 3493 | nfsd4_end_grace(nn); |
Benny Halevy | 36acb66 | 2010-05-12 00:13:04 +0300 | [diff] [blame] | 3494 | INIT_LIST_HEAD(&reaplist); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 3495 | spin_lock(&nn->client_lock); |
Stanislav Kinsbursky | 5ed58bb | 2012-11-14 18:21:56 +0300 | [diff] [blame] | 3496 | list_for_each_safe(pos, next, &nn->client_lru) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3497 | clp = list_entry(pos, struct nfs4_client, cl_lru); |
| 3498 | if (time_after((unsigned long)clp->cl_time, (unsigned long)cutoff)) { |
| 3499 | t = clp->cl_time - cutoff; |
Jeff Layton | a832e7a | 2014-05-30 09:09:26 -0400 | [diff] [blame] | 3500 | new_timeo = min(new_timeo, t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3501 | break; |
| 3502 | } |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 3503 | if (mark_client_expired_locked(clp)) { |
Benny Halevy | d768298 | 2010-05-12 00:13:54 +0300 | [diff] [blame] | 3504 | dprintk("NFSD: client in use (clientid %08x)\n", |
| 3505 | clp->cl_clientid.cl_id); |
| 3506 | continue; |
| 3507 | } |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 3508 | list_move(&clp->cl_lru, &reaplist); |
Benny Halevy | 36acb66 | 2010-05-12 00:13:04 +0300 | [diff] [blame] | 3509 | } |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 3510 | spin_unlock(&nn->client_lock); |
Benny Halevy | 36acb66 | 2010-05-12 00:13:04 +0300 | [diff] [blame] | 3511 | list_for_each_safe(pos, next, &reaplist) { |
| 3512 | clp = list_entry(pos, struct nfs4_client, cl_lru); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3513 | dprintk("NFSD: purging unused client (clientid %08x)\n", |
| 3514 | clp->cl_clientid.cl_id); |
| 3515 | expire_client(clp); |
| 3516 | } |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3517 | spin_lock(&state_lock); |
J. Bruce Fields | e8c69d1 | 2013-03-21 15:19:33 -0400 | [diff] [blame] | 3518 | list_for_each_safe(pos, next, &nn->del_recall_lru) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3519 | dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru); |
Stanislav Kinsbursky | 4e37a7c2 | 2012-11-26 15:22:03 +0300 | [diff] [blame] | 3520 | if (net_generic(dp->dl_stid.sc_client->net, nfsd_net_id) != nn) |
| 3521 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3522 | if (time_after((unsigned long)dp->dl_time, (unsigned long)cutoff)) { |
Jeff Layton | a832e7a | 2014-05-30 09:09:26 -0400 | [diff] [blame] | 3523 | t = dp->dl_time - cutoff; |
| 3524 | new_timeo = min(new_timeo, t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3525 | break; |
| 3526 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3527 | list_move(&dp->dl_recall_lru, &reaplist); |
| 3528 | } |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 3529 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3530 | list_for_each_safe(pos, next, &reaplist) { |
| 3531 | dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru); |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 3532 | revoke_delegation(dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3533 | } |
Stanislav Kinsbursky | 73758fed | 2012-11-14 18:22:01 +0300 | [diff] [blame] | 3534 | list_for_each_safe(pos, next, &nn->close_lru) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3535 | oo = container_of(pos, struct nfs4_openowner, oo_close_lru); |
| 3536 | if (time_after((unsigned long)oo->oo_time, (unsigned long)cutoff)) { |
Jeff Layton | a832e7a | 2014-05-30 09:09:26 -0400 | [diff] [blame] | 3537 | t = oo->oo_time - cutoff; |
| 3538 | new_timeo = min(new_timeo, t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3539 | break; |
| 3540 | } |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3541 | release_openowner(oo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3542 | } |
Jeff Layton | a832e7a | 2014-05-30 09:09:26 -0400 | [diff] [blame] | 3543 | new_timeo = max_t(time_t, new_timeo, NFSD_LAUNDROMAT_MINTIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3544 | nfs4_unlock_state(); |
Jeff Layton | a832e7a | 2014-05-30 09:09:26 -0400 | [diff] [blame] | 3545 | return new_timeo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3546 | } |
| 3547 | |
Harvey Harrison | a254b24 | 2008-02-20 12:49:00 -0800 | [diff] [blame] | 3548 | static struct workqueue_struct *laundry_wq; |
| 3549 | static void laundromat_main(struct work_struct *); |
Harvey Harrison | a254b24 | 2008-02-20 12:49:00 -0800 | [diff] [blame] | 3550 | |
| 3551 | static void |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 3552 | laundromat_main(struct work_struct *laundry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3553 | { |
| 3554 | time_t t; |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 3555 | struct delayed_work *dwork = container_of(laundry, struct delayed_work, |
| 3556 | work); |
| 3557 | struct nfsd_net *nn = container_of(dwork, struct nfsd_net, |
| 3558 | laundromat_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3559 | |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 3560 | t = nfs4_laundromat(nn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3561 | dprintk("NFSD: laundromat_main - sleeping for %ld seconds\n", t); |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 3562 | queue_delayed_work(laundry_wq, &nn->laundromat_work, t*HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3563 | } |
| 3564 | |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3565 | static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp) |
NeilBrown | f881651 | 2005-07-07 17:59:25 -0700 | [diff] [blame] | 3566 | { |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3567 | if (fhp->fh_dentry->d_inode != stp->st_file->fi_inode) |
| 3568 | return nfserr_bad_stateid; |
| 3569 | return nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3570 | } |
| 3571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3572 | static inline int |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3573 | access_permit_read(struct nfs4_ol_stateid *stp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3574 | { |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3575 | return test_access(NFS4_SHARE_ACCESS_READ, stp) || |
| 3576 | test_access(NFS4_SHARE_ACCESS_BOTH, stp) || |
| 3577 | test_access(NFS4_SHARE_ACCESS_WRITE, stp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3578 | } |
| 3579 | |
| 3580 | static inline int |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3581 | access_permit_write(struct nfs4_ol_stateid *stp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3582 | { |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3583 | return test_access(NFS4_SHARE_ACCESS_WRITE, stp) || |
| 3584 | test_access(NFS4_SHARE_ACCESS_BOTH, stp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3585 | } |
| 3586 | |
| 3587 | static |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3588 | __be32 nfs4_check_openmode(struct nfs4_ol_stateid *stp, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3589 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3590 | __be32 status = nfserr_openmode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3591 | |
J. Bruce Fields | 0292191 | 2010-07-29 15:16:59 -0400 | [diff] [blame] | 3592 | /* For lock stateid's, we test the parent open, not the lock: */ |
| 3593 | if (stp->st_openstp) |
| 3594 | stp = stp->st_openstp; |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3595 | if ((flags & WR_STATE) && !access_permit_write(stp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3596 | goto out; |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 3597 | if ((flags & RD_STATE) && !access_permit_read(stp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3598 | goto out; |
| 3599 | status = nfs_ok; |
| 3600 | out: |
| 3601 | return status; |
| 3602 | } |
| 3603 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3604 | static inline __be32 |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3605 | check_special_stateids(struct net *net, svc_fh *current_fh, stateid_t *stateid, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3606 | { |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 3607 | if (ONE_STATEID(stateid) && (flags & RD_STATE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3608 | return nfs_ok; |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3609 | else if (locks_in_grace(net)) { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 3610 | /* Answer in remaining cases depends on existence of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3611 | * conflicting state; so we must wait out the grace period. */ |
| 3612 | return nfserr_grace; |
| 3613 | } else if (flags & WR_STATE) |
| 3614 | return nfs4_share_conflict(current_fh, |
| 3615 | NFS4_SHARE_DENY_WRITE); |
| 3616 | else /* (flags & RD_STATE) && ZERO_STATEID(stateid) */ |
| 3617 | return nfs4_share_conflict(current_fh, |
| 3618 | NFS4_SHARE_DENY_READ); |
| 3619 | } |
| 3620 | |
| 3621 | /* |
| 3622 | * Allow READ/WRITE during grace period on recovered state only for files |
| 3623 | * that are not able to provide mandatory locking. |
| 3624 | */ |
| 3625 | static inline int |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3626 | grace_disallows_io(struct net *net, struct inode *inode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3627 | { |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3628 | return locks_in_grace(net) && mandatory_lock(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3629 | } |
| 3630 | |
J. Bruce Fields | 81b8296 | 2011-08-23 11:03:29 -0400 | [diff] [blame] | 3631 | /* Returns true iff a is later than b: */ |
| 3632 | static bool stateid_generation_after(stateid_t *a, stateid_t *b) |
| 3633 | { |
Jim Rees | 1a9357f | 2013-05-17 17:33:00 -0400 | [diff] [blame] | 3634 | return (s32)(a->si_generation - b->si_generation) > 0; |
J. Bruce Fields | 81b8296 | 2011-08-23 11:03:29 -0400 | [diff] [blame] | 3635 | } |
| 3636 | |
J. Bruce Fields | 57b7b43 | 2012-04-25 17:58:50 -0400 | [diff] [blame] | 3637 | static __be32 check_stateid_generation(stateid_t *in, stateid_t *ref, bool has_session) |
J. Bruce Fields | 0836f58 | 2008-01-26 19:08:12 -0500 | [diff] [blame] | 3638 | { |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 3639 | /* |
| 3640 | * When sessions are used the stateid generation number is ignored |
| 3641 | * when it is zero. |
| 3642 | */ |
J. Bruce Fields | 28dde24 | 2011-08-22 10:07:12 -0400 | [diff] [blame] | 3643 | if (has_session && in->si_generation == 0) |
J. Bruce Fields | 81b8296 | 2011-08-23 11:03:29 -0400 | [diff] [blame] | 3644 | return nfs_ok; |
| 3645 | |
| 3646 | if (in->si_generation == ref->si_generation) |
| 3647 | return nfs_ok; |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 3648 | |
J. Bruce Fields | 0836f58 | 2008-01-26 19:08:12 -0500 | [diff] [blame] | 3649 | /* If the client sends us a stateid from the future, it's buggy: */ |
J. Bruce Fields | 81b8296 | 2011-08-23 11:03:29 -0400 | [diff] [blame] | 3650 | if (stateid_generation_after(in, ref)) |
J. Bruce Fields | 0836f58 | 2008-01-26 19:08:12 -0500 | [diff] [blame] | 3651 | return nfserr_bad_stateid; |
| 3652 | /* |
J. Bruce Fields | 81b8296 | 2011-08-23 11:03:29 -0400 | [diff] [blame] | 3653 | * However, we could see a stateid from the past, even from a |
| 3654 | * non-buggy client. For example, if the client sends a lock |
| 3655 | * while some IO is outstanding, the lock may bump si_generation |
| 3656 | * while the IO is still in flight. The client could avoid that |
| 3657 | * situation by waiting for responses on all the IO requests, |
| 3658 | * but better performance may result in retrying IO that |
| 3659 | * receives an old_stateid error if requests are rarely |
| 3660 | * reordered in flight: |
J. Bruce Fields | 0836f58 | 2008-01-26 19:08:12 -0500 | [diff] [blame] | 3661 | */ |
J. Bruce Fields | 81b8296 | 2011-08-23 11:03:29 -0400 | [diff] [blame] | 3662 | return nfserr_old_stateid; |
J. Bruce Fields | 0836f58 | 2008-01-26 19:08:12 -0500 | [diff] [blame] | 3663 | } |
| 3664 | |
Chuck Lever | 7df302f | 2012-05-29 13:56:37 -0400 | [diff] [blame] | 3665 | static __be32 nfsd4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid) |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3666 | { |
J. Bruce Fields | 97b7e3b | 2011-09-09 11:26:58 -0400 | [diff] [blame] | 3667 | struct nfs4_stid *s; |
| 3668 | struct nfs4_ol_stateid *ols; |
| 3669 | __be32 status; |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3670 | |
Chuck Lever | 7df302f | 2012-05-29 13:56:37 -0400 | [diff] [blame] | 3671 | if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) |
| 3672 | return nfserr_bad_stateid; |
| 3673 | /* Client debugging aid. */ |
| 3674 | if (!same_clid(&stateid->si_opaque.so_clid, &cl->cl_clientid)) { |
| 3675 | char addr_str[INET6_ADDRSTRLEN]; |
| 3676 | rpc_ntop((struct sockaddr *)&cl->cl_addr, addr_str, |
| 3677 | sizeof(addr_str)); |
| 3678 | pr_warn_ratelimited("NFSD: client %s testing state ID " |
| 3679 | "with incorrect client ID\n", addr_str); |
| 3680 | return nfserr_bad_stateid; |
| 3681 | } |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3682 | s = find_stateid(cl, stateid); |
J. Bruce Fields | 97b7e3b | 2011-09-09 11:26:58 -0400 | [diff] [blame] | 3683 | if (!s) |
Chuck Lever | 7df302f | 2012-05-29 13:56:37 -0400 | [diff] [blame] | 3684 | return nfserr_bad_stateid; |
J. Bruce Fields | 36279ac | 2011-09-26 12:53:00 -0400 | [diff] [blame] | 3685 | status = check_stateid_generation(stateid, &s->sc_stateid, 1); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3686 | if (status) |
J. Bruce Fields | 97b7e3b | 2011-09-09 11:26:58 -0400 | [diff] [blame] | 3687 | return status; |
J. Bruce Fields | 2334003 | 2013-04-09 17:42:28 -0400 | [diff] [blame] | 3688 | switch (s->sc_type) { |
| 3689 | case NFS4_DELEG_STID: |
J. Bruce Fields | 97b7e3b | 2011-09-09 11:26:58 -0400 | [diff] [blame] | 3690 | return nfs_ok; |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 3691 | case NFS4_REVOKED_DELEG_STID: |
| 3692 | return nfserr_deleg_revoked; |
J. Bruce Fields | 2334003 | 2013-04-09 17:42:28 -0400 | [diff] [blame] | 3693 | case NFS4_OPEN_STID: |
| 3694 | case NFS4_LOCK_STID: |
| 3695 | ols = openlockstateid(s); |
| 3696 | if (ols->st_stateowner->so_is_open_owner |
| 3697 | && !(openowner(ols->st_stateowner)->oo_flags |
| 3698 | & NFS4_OO_CONFIRMED)) |
| 3699 | return nfserr_bad_stateid; |
| 3700 | return nfs_ok; |
| 3701 | default: |
| 3702 | printk("unknown stateid type %x\n", s->sc_type); |
| 3703 | case NFS4_CLOSED_STID: |
J. Bruce Fields | 97b7e3b | 2011-09-09 11:26:58 -0400 | [diff] [blame] | 3704 | return nfserr_bad_stateid; |
J. Bruce Fields | 2334003 | 2013-04-09 17:42:28 -0400 | [diff] [blame] | 3705 | } |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3706 | } |
| 3707 | |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3708 | static __be32 nfsd4_lookup_stateid(stateid_t *stateid, unsigned char typemask, |
| 3709 | struct nfs4_stid **s, bool sessions, |
| 3710 | struct nfsd_net *nn) |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3711 | { |
| 3712 | struct nfs4_client *cl; |
J. Bruce Fields | 0eb6f20 | 2013-03-12 17:36:17 -0400 | [diff] [blame] | 3713 | __be32 status; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3714 | |
| 3715 | if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) |
| 3716 | return nfserr_bad_stateid; |
J. Bruce Fields | 0eb6f20 | 2013-03-12 17:36:17 -0400 | [diff] [blame] | 3717 | status = lookup_clientid(&stateid->si_opaque.so_clid, sessions, |
| 3718 | nn, &cl); |
Trond Myklebust | a8a7c67 | 2014-03-29 14:43:38 -0400 | [diff] [blame] | 3719 | if (status == nfserr_stale_clientid) { |
| 3720 | if (sessions) |
| 3721 | return nfserr_bad_stateid; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3722 | return nfserr_stale_stateid; |
Trond Myklebust | a8a7c67 | 2014-03-29 14:43:38 -0400 | [diff] [blame] | 3723 | } |
J. Bruce Fields | 0eb6f20 | 2013-03-12 17:36:17 -0400 | [diff] [blame] | 3724 | if (status) |
| 3725 | return status; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3726 | *s = find_stateid_by_type(cl, stateid, typemask); |
| 3727 | if (!*s) |
| 3728 | return nfserr_bad_stateid; |
| 3729 | return nfs_ok; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3730 | } |
| 3731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3732 | /* |
| 3733 | * Checks for stateid operations |
| 3734 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3735 | __be32 |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3736 | nfs4_preprocess_stateid_op(struct net *net, struct nfsd4_compound_state *cstate, |
Benny Halevy | dd453df | 2009-04-03 08:28:41 +0300 | [diff] [blame] | 3737 | stateid_t *stateid, int flags, struct file **filpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3738 | { |
J. Bruce Fields | 69064a2 | 2011-09-09 11:54:57 -0400 | [diff] [blame] | 3739 | struct nfs4_stid *s; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3740 | struct nfs4_ol_stateid *stp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3741 | struct nfs4_delegation *dp = NULL; |
Benny Halevy | dd453df | 2009-04-03 08:28:41 +0300 | [diff] [blame] | 3742 | struct svc_fh *current_fh = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3743 | struct inode *ino = current_fh->fh_dentry->d_inode; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3744 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3745 | struct file *file = NULL; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3746 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3747 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3748 | if (filpp) |
| 3749 | *filpp = NULL; |
| 3750 | |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3751 | if (grace_disallows_io(net, ino)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3752 | return nfserr_grace; |
| 3753 | |
| 3754 | if (ZERO_STATEID(stateid) || ONE_STATEID(stateid)) |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 3755 | return check_special_stateids(net, current_fh, stateid, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3756 | |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3757 | nfs4_lock_state(); |
| 3758 | |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3759 | status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID|NFS4_OPEN_STID|NFS4_LOCK_STID, |
| 3760 | &s, cstate->minorversion, nn); |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3761 | if (status) |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3762 | goto out; |
J. Bruce Fields | 69064a2 | 2011-09-09 11:54:57 -0400 | [diff] [blame] | 3763 | status = check_stateid_generation(stateid, &s->sc_stateid, nfsd4_has_session(cstate)); |
| 3764 | if (status) |
| 3765 | goto out; |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3766 | switch (s->sc_type) { |
| 3767 | case NFS4_DELEG_STID: |
J. Bruce Fields | 69064a2 | 2011-09-09 11:54:57 -0400 | [diff] [blame] | 3768 | dp = delegstateid(s); |
J. Bruce Fields | dc9bf70 | 2009-02-21 11:14:43 -0800 | [diff] [blame] | 3769 | status = nfs4_check_delegmode(dp, flags); |
| 3770 | if (status) |
| 3771 | goto out; |
Dan Carpenter | 43b0178 | 2010-10-27 23:19:04 +0200 | [diff] [blame] | 3772 | if (filpp) { |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3773 | file = dp->dl_file->fi_deleg_file; |
| 3774 | if (!file) { |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 3775 | WARN_ON_ONCE(1); |
| 3776 | status = nfserr_serverfault; |
| 3777 | goto out; |
| 3778 | } |
Dan Carpenter | 43b0178 | 2010-10-27 23:19:04 +0200 | [diff] [blame] | 3779 | } |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3780 | break; |
| 3781 | case NFS4_OPEN_STID: |
| 3782 | case NFS4_LOCK_STID: |
J. Bruce Fields | 69064a2 | 2011-09-09 11:54:57 -0400 | [diff] [blame] | 3783 | stp = openlockstateid(s); |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3784 | status = nfs4_check_fh(current_fh, stp); |
| 3785 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3786 | goto out; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3787 | if (stp->st_stateowner->so_is_open_owner |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3788 | && !(openowner(stp->st_stateowner)->oo_flags & NFS4_OO_CONFIRMED)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3789 | goto out; |
J. Bruce Fields | a4455be | 2009-02-21 10:40:22 -0800 | [diff] [blame] | 3790 | status = nfs4_check_openmode(stp, flags); |
| 3791 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3792 | goto out; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3793 | if (filpp) { |
| 3794 | if (flags & RD_STATE) |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3795 | file = find_readable_file(stp->st_file); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3796 | else |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3797 | file = find_writeable_file(stp->st_file); |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 3798 | } |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3799 | break; |
| 3800 | default: |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3801 | status = nfserr_bad_stateid; |
| 3802 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3803 | } |
| 3804 | status = nfs_ok; |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3805 | if (file) |
| 3806 | *filpp = get_file(file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3807 | out: |
Trond Myklebust | 14bcab1 | 2014-04-18 14:44:07 -0400 | [diff] [blame] | 3808 | nfs4_unlock_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3809 | return status; |
| 3810 | } |
| 3811 | |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3812 | static __be32 |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3813 | nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp) |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3814 | { |
J. Bruce Fields | a1b8ff4 | 2014-05-20 15:55:21 -0400 | [diff] [blame] | 3815 | struct nfs4_lockowner *lo = lockowner(stp->st_stateowner); |
| 3816 | |
| 3817 | if (check_for_locks(stp->st_file, lo)) |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3818 | return nfserr_locks_held; |
J. Bruce Fields | a1b8ff4 | 2014-05-20 15:55:21 -0400 | [diff] [blame] | 3819 | /* |
| 3820 | * Currently there's a 1-1 lock stateid<->lockowner |
| 3821 | * correspondance, and we have to delete the lockowner when we |
| 3822 | * delete the lock stateid: |
| 3823 | */ |
J. Bruce Fields | 4838540 | 2014-05-27 11:14:26 -0400 | [diff] [blame] | 3824 | release_lockowner(lo); |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3825 | return nfs_ok; |
| 3826 | } |
| 3827 | |
| 3828 | /* |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3829 | * Test if the stateid is valid |
| 3830 | */ |
| 3831 | __be32 |
| 3832 | nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 3833 | struct nfsd4_test_stateid *test_stateid) |
| 3834 | { |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 3835 | struct nfsd4_test_stateid_id *stateid; |
| 3836 | struct nfs4_client *cl = cstate->session->se_client; |
| 3837 | |
| 3838 | nfs4_lock_state(); |
| 3839 | list_for_each_entry(stateid, &test_stateid->ts_stateid_list, ts_id_list) |
Chuck Lever | 7df302f | 2012-05-29 13:56:37 -0400 | [diff] [blame] | 3840 | stateid->ts_id_status = |
| 3841 | nfsd4_validate_stateid(cl, &stateid->ts_id_stateid); |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 3842 | nfs4_unlock_state(); |
| 3843 | |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3844 | return nfs_ok; |
| 3845 | } |
| 3846 | |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3847 | __be32 |
| 3848 | nfsd4_free_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 3849 | struct nfsd4_free_stateid *free_stateid) |
| 3850 | { |
| 3851 | stateid_t *stateid = &free_stateid->fr_stateid; |
J. Bruce Fields | 2da1cec | 2011-09-16 18:56:20 -0400 | [diff] [blame] | 3852 | struct nfs4_stid *s; |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 3853 | struct nfs4_delegation *dp; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3854 | struct nfs4_client *cl = cstate->session->se_client; |
J. Bruce Fields | 2da1cec | 2011-09-16 18:56:20 -0400 | [diff] [blame] | 3855 | __be32 ret = nfserr_bad_stateid; |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3856 | |
| 3857 | nfs4_lock_state(); |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3858 | s = find_stateid(cl, stateid); |
J. Bruce Fields | 2da1cec | 2011-09-16 18:56:20 -0400 | [diff] [blame] | 3859 | if (!s) |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3860 | goto out; |
J. Bruce Fields | 2da1cec | 2011-09-16 18:56:20 -0400 | [diff] [blame] | 3861 | switch (s->sc_type) { |
| 3862 | case NFS4_DELEG_STID: |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3863 | ret = nfserr_locks_held; |
| 3864 | goto out; |
J. Bruce Fields | 2da1cec | 2011-09-16 18:56:20 -0400 | [diff] [blame] | 3865 | case NFS4_OPEN_STID: |
| 3866 | case NFS4_LOCK_STID: |
| 3867 | ret = check_stateid_generation(stateid, &s->sc_stateid, 1); |
| 3868 | if (ret) |
| 3869 | goto out; |
| 3870 | if (s->sc_type == NFS4_LOCK_STID) |
| 3871 | ret = nfsd4_free_lock_stateid(openlockstateid(s)); |
| 3872 | else |
| 3873 | ret = nfserr_locks_held; |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3874 | break; |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 3875 | case NFS4_REVOKED_DELEG_STID: |
| 3876 | dp = delegstateid(s); |
| 3877 | destroy_revoked_delegation(dp); |
| 3878 | ret = nfs_ok; |
| 3879 | break; |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3880 | default: |
| 3881 | ret = nfserr_bad_stateid; |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3882 | } |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3883 | out: |
| 3884 | nfs4_unlock_state(); |
| 3885 | return ret; |
| 3886 | } |
| 3887 | |
NeilBrown | 4c4cd22 | 2005-07-07 17:59:27 -0700 | [diff] [blame] | 3888 | static inline int |
| 3889 | setlkflg (int type) |
| 3890 | { |
| 3891 | return (type == NFS4_READW_LT || type == NFS4_READ_LT) ? |
| 3892 | RD_STATE : WR_STATE; |
| 3893 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3894 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3895 | static __be32 nfs4_seqid_op_checks(struct nfsd4_compound_state *cstate, stateid_t *stateid, u32 seqid, struct nfs4_ol_stateid *stp) |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3896 | { |
| 3897 | struct svc_fh *current_fh = &cstate->current_fh; |
| 3898 | struct nfs4_stateowner *sop = stp->st_stateowner; |
| 3899 | __be32 status; |
| 3900 | |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3901 | status = nfsd4_check_seqid(cstate, sop, seqid); |
| 3902 | if (status) |
| 3903 | return status; |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 3904 | if (stp->st_stid.sc_type == NFS4_CLOSED_STID |
| 3905 | || stp->st_stid.sc_type == NFS4_REVOKED_DELEG_STID) |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3906 | /* |
| 3907 | * "Closed" stateid's exist *only* to return |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 3908 | * nfserr_replay_me from the previous step, and |
| 3909 | * revoked delegations are kept only for free_stateid. |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 3910 | */ |
| 3911 | return nfserr_bad_stateid; |
| 3912 | status = check_stateid_generation(stateid, &stp->st_stid.sc_stateid, nfsd4_has_session(cstate)); |
| 3913 | if (status) |
| 3914 | return status; |
| 3915 | return nfs4_check_fh(current_fh, stp); |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3916 | } |
| 3917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3918 | /* |
| 3919 | * Checks for sequence id mutating operations. |
| 3920 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3921 | static __be32 |
Benny Halevy | dd453df | 2009-04-03 08:28:41 +0300 | [diff] [blame] | 3922 | nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, |
J. Bruce Fields | 2288d0e | 2011-09-06 15:50:21 -0400 | [diff] [blame] | 3923 | stateid_t *stateid, char typemask, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3924 | struct nfs4_ol_stateid **stpp, |
| 3925 | struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3926 | { |
J. Bruce Fields | 0836f58 | 2008-01-26 19:08:12 -0500 | [diff] [blame] | 3927 | __be32 status; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3928 | struct nfs4_stid *s; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3929 | |
Benny Halevy | 8c10cbd | 2009-10-19 12:04:53 +0200 | [diff] [blame] | 3930 | dprintk("NFSD: %s: seqid=%d stateid = " STATEID_FMT "\n", __func__, |
| 3931 | seqid, STATEID_VAL(stateid)); |
NeilBrown | 3a4f98b | 2005-07-07 17:59:26 -0700 | [diff] [blame] | 3932 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3933 | *stpp = NULL; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3934 | status = nfsd4_lookup_stateid(stateid, typemask, &s, |
| 3935 | cstate->minorversion, nn); |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3936 | if (status) |
| 3937 | return status; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 3938 | *stpp = openlockstateid(s); |
J. Bruce Fields | 3d74e6a | 2013-03-22 17:44:19 -0400 | [diff] [blame] | 3939 | if (!nfsd4_has_session(cstate)) |
| 3940 | cstate->replay_owner = (*stpp)->st_stateowner; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3941 | |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3942 | return nfs4_seqid_op_checks(cstate, stateid, seqid, *stpp); |
| 3943 | } |
J. Bruce Fields | 39325bd | 2007-11-26 17:06:39 -0500 | [diff] [blame] | 3944 | |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3945 | static __be32 nfs4_preprocess_confirmed_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid, |
| 3946 | stateid_t *stateid, struct nfs4_ol_stateid **stpp, struct nfsd_net *nn) |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3947 | { |
| 3948 | __be32 status; |
| 3949 | struct nfs4_openowner *oo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3950 | |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3951 | status = nfs4_preprocess_seqid_op(cstate, seqid, stateid, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3952 | NFS4_OPEN_STID, stpp, nn); |
J. Bruce Fields | 7a8711c | 2011-09-02 09:03:37 -0400 | [diff] [blame] | 3953 | if (status) |
| 3954 | return status; |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 3955 | oo = openowner((*stpp)->st_stateowner); |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3956 | if (!(oo->oo_flags & NFS4_OO_CONFIRMED)) |
NeilBrown | 3a4f98b | 2005-07-07 17:59:26 -0700 | [diff] [blame] | 3957 | return nfserr_bad_stateid; |
NeilBrown | 3a4f98b | 2005-07-07 17:59:26 -0700 | [diff] [blame] | 3958 | return nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3959 | } |
| 3960 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3961 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 3962 | nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 3963 | struct nfsd4_open_confirm *oc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3964 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3965 | __be32 status; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3966 | struct nfs4_openowner *oo; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3967 | struct nfs4_ol_stateid *stp; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3968 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3969 | |
Al Viro | a6a9f18 | 2013-09-16 10:57:01 -0400 | [diff] [blame] | 3970 | dprintk("NFSD: nfsd4_open_confirm on file %pd\n", |
| 3971 | cstate->current_fh.fh_dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3972 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 3973 | status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0); |
J. Bruce Fields | a8cddc5 | 2006-06-30 01:56:13 -0700 | [diff] [blame] | 3974 | if (status) |
| 3975 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3976 | |
| 3977 | nfs4_lock_state(); |
| 3978 | |
J. Bruce Fields | 9072d5c | 2011-08-24 12:45:03 -0400 | [diff] [blame] | 3979 | status = nfs4_preprocess_seqid_op(cstate, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 3980 | oc->oc_seqid, &oc->oc_req_stateid, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 3981 | NFS4_OPEN_STID, &stp, nn); |
J. Bruce Fields | 9072d5c | 2011-08-24 12:45:03 -0400 | [diff] [blame] | 3982 | if (status) |
J. Bruce Fields | 68b66e8 | 2011-09-02 12:19:43 -0400 | [diff] [blame] | 3983 | goto out; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 3984 | oo = openowner(stp->st_stateowner); |
J. Bruce Fields | 68b66e8 | 2011-09-02 12:19:43 -0400 | [diff] [blame] | 3985 | status = nfserr_bad_stateid; |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3986 | if (oo->oo_flags & NFS4_OO_CONFIRMED) |
J. Bruce Fields | 68b66e8 | 2011-09-02 12:19:43 -0400 | [diff] [blame] | 3987 | goto out; |
J. Bruce Fields | dad1c06 | 2011-09-12 12:24:13 -0400 | [diff] [blame] | 3988 | oo->oo_flags |= NFS4_OO_CONFIRMED; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3989 | update_stateid(&stp->st_stid.sc_stateid); |
| 3990 | memcpy(&oc->oc_resp_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); |
Benny Halevy | 8c10cbd | 2009-10-19 12:04:53 +0200 | [diff] [blame] | 3991 | dprintk("NFSD: %s: success, seqid=%d stateid=" STATEID_FMT "\n", |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 3992 | __func__, oc->oc_seqid, STATEID_VAL(&stp->st_stid.sc_stateid)); |
NeilBrown | c7b9a45 | 2005-06-23 22:04:30 -0700 | [diff] [blame] | 3993 | |
Jeff Layton | 2a4317c | 2012-03-21 16:42:43 -0400 | [diff] [blame] | 3994 | nfsd4_client_record_create(oo->oo_owner.so_client); |
J. Bruce Fields | 68b66e8 | 2011-09-02 12:19:43 -0400 | [diff] [blame] | 3995 | status = nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3996 | out: |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 3997 | nfsd4_bump_seqid(cstate, status); |
J. Bruce Fields | 5ec094c | 2011-08-30 17:02:48 -0400 | [diff] [blame] | 3998 | if (!cstate->replay_owner) |
| 3999 | nfs4_unlock_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4000 | return status; |
| 4001 | } |
| 4002 | |
J. Bruce Fields | 6409a5a | 2011-09-28 11:37:56 -0400 | [diff] [blame] | 4003 | static inline void nfs4_stateid_downgrade_bit(struct nfs4_ol_stateid *stp, u32 access) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4004 | { |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 4005 | if (!test_access(access, stp)) |
J. Bruce Fields | 6409a5a | 2011-09-28 11:37:56 -0400 | [diff] [blame] | 4006 | return; |
| 4007 | nfs4_file_put_access(stp->st_file, nfs4_access_to_omode(access)); |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 4008 | clear_access(access, stp); |
J. Bruce Fields | 6409a5a | 2011-09-28 11:37:56 -0400 | [diff] [blame] | 4009 | } |
J. Bruce Fields | f197c27 | 2011-06-29 08:23:50 -0400 | [diff] [blame] | 4010 | |
J. Bruce Fields | 6409a5a | 2011-09-28 11:37:56 -0400 | [diff] [blame] | 4011 | static inline void nfs4_stateid_downgrade(struct nfs4_ol_stateid *stp, u32 to_access) |
| 4012 | { |
| 4013 | switch (to_access) { |
| 4014 | case NFS4_SHARE_ACCESS_READ: |
| 4015 | nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_WRITE); |
| 4016 | nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH); |
| 4017 | break; |
| 4018 | case NFS4_SHARE_ACCESS_WRITE: |
| 4019 | nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_READ); |
| 4020 | nfs4_stateid_downgrade_bit(stp, NFS4_SHARE_ACCESS_BOTH); |
| 4021 | break; |
| 4022 | case NFS4_SHARE_ACCESS_BOTH: |
| 4023 | break; |
| 4024 | default: |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 4025 | WARN_ON_ONCE(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4026 | } |
| 4027 | } |
| 4028 | |
| 4029 | static void |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 4030 | reset_union_bmap_deny(unsigned long deny, struct nfs4_ol_stateid *stp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4031 | { |
| 4032 | int i; |
| 4033 | for (i = 0; i < 4; i++) { |
| 4034 | if ((i & deny) != i) |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 4035 | clear_deny(i, stp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4036 | } |
| 4037 | } |
| 4038 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4039 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4040 | nfsd4_open_downgrade(struct svc_rqst *rqstp, |
| 4041 | struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 4042 | struct nfsd4_open_downgrade *od) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4043 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4044 | __be32 status; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4045 | struct nfs4_ol_stateid *stp; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4046 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4047 | |
Al Viro | a6a9f18 | 2013-09-16 10:57:01 -0400 | [diff] [blame] | 4048 | dprintk("NFSD: nfsd4_open_downgrade on file %pd\n", |
| 4049 | cstate->current_fh.fh_dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4050 | |
J. Bruce Fields | c30e92d | 2011-10-10 17:34:31 -0400 | [diff] [blame] | 4051 | /* We don't yet support WANT bits: */ |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 4052 | if (od->od_deleg_want) |
| 4053 | dprintk("NFSD: %s: od_deleg_want=0x%x ignored\n", __func__, |
| 4054 | od->od_deleg_want); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4055 | |
| 4056 | nfs4_lock_state(); |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 4057 | status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4058 | &od->od_stateid, &stp, nn); |
J. Bruce Fields | 9072d5c | 2011-08-24 12:45:03 -0400 | [diff] [blame] | 4059 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4060 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4061 | status = nfserr_inval; |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 4062 | if (!test_access(od->od_share_access, stp)) { |
| 4063 | dprintk("NFSD: access not a subset current bitmap: 0x%lx, input access=%08x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4064 | stp->st_access_bmap, od->od_share_access); |
| 4065 | goto out; |
| 4066 | } |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 4067 | if (!test_deny(od->od_share_deny, stp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4068 | dprintk("NFSD:deny not a subset current bitmap: 0x%lx, input deny=%08x\n", |
| 4069 | stp->st_deny_bmap, od->od_share_deny); |
| 4070 | goto out; |
| 4071 | } |
J. Bruce Fields | 6409a5a | 2011-09-28 11:37:56 -0400 | [diff] [blame] | 4072 | nfs4_stateid_downgrade(stp, od->od_share_access); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4073 | |
Jeff Layton | ce0fc43 | 2012-05-11 09:45:14 -0400 | [diff] [blame] | 4074 | reset_union_bmap_deny(od->od_share_deny, stp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4075 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4076 | update_stateid(&stp->st_stid.sc_stateid); |
| 4077 | memcpy(&od->od_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4078 | status = nfs_ok; |
| 4079 | out: |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4080 | nfsd4_bump_seqid(cstate, status); |
J. Bruce Fields | 5ec094c | 2011-08-30 17:02:48 -0400 | [diff] [blame] | 4081 | if (!cstate->replay_owner) |
| 4082 | nfs4_unlock_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4083 | return status; |
| 4084 | } |
| 4085 | |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 4086 | static void nfsd4_close_open_stateid(struct nfs4_ol_stateid *s) |
| 4087 | { |
| 4088 | unhash_open_stateid(s); |
| 4089 | s->st_stid.sc_type = NFS4_CLOSED_STID; |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 4090 | } |
| 4091 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4092 | /* |
| 4093 | * nfs4_unlock_state() called after encode |
| 4094 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4095 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4096 | nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 4097 | struct nfsd4_close *close) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4098 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4099 | __be32 status; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4100 | struct nfs4_openowner *oo; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4101 | struct nfs4_ol_stateid *stp; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4102 | struct net *net = SVC_NET(rqstp); |
| 4103 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4104 | |
Al Viro | a6a9f18 | 2013-09-16 10:57:01 -0400 | [diff] [blame] | 4105 | dprintk("NFSD: nfsd4_close on file %pd\n", |
| 4106 | cstate->current_fh.fh_dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4107 | |
| 4108 | nfs4_lock_state(); |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 4109 | status = nfs4_preprocess_seqid_op(cstate, close->cl_seqid, |
| 4110 | &close->cl_stateid, |
| 4111 | NFS4_OPEN_STID|NFS4_CLOSED_STID, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4112 | &stp, nn); |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4113 | nfsd4_bump_seqid(cstate, status); |
J. Bruce Fields | 9072d5c | 2011-08-24 12:45:03 -0400 | [diff] [blame] | 4114 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4115 | goto out; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4116 | oo = openowner(stp->st_stateowner); |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4117 | update_stateid(&stp->st_stid.sc_stateid); |
| 4118 | memcpy(&close->cl_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4119 | |
J. Bruce Fields | f7a4d87 | 2011-09-16 20:12:38 -0400 | [diff] [blame] | 4120 | nfsd4_close_open_stateid(stp); |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4121 | |
Benny Halevy | 01a87d9 | 2013-10-14 09:01:55 +0300 | [diff] [blame] | 4122 | if (cstate->minorversion) |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4123 | free_generic_stateid(stp); |
Benny Halevy | 01a87d9 | 2013-10-14 09:01:55 +0300 | [diff] [blame] | 4124 | else |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4125 | oo->oo_last_closed_stid = stp; |
J. Bruce Fields | 04ef595 | 2006-01-18 17:43:21 -0800 | [diff] [blame] | 4126 | |
J. Bruce Fields | 74dbafa | 2012-06-06 12:53:48 -0400 | [diff] [blame] | 4127 | if (list_empty(&oo->oo_owner.so_stateids)) { |
J. Bruce Fields | 3d74e6a | 2013-03-22 17:44:19 -0400 | [diff] [blame] | 4128 | if (cstate->minorversion) |
J. Bruce Fields | 74dbafa | 2012-06-06 12:53:48 -0400 | [diff] [blame] | 4129 | release_openowner(oo); |
J. Bruce Fields | 3d74e6a | 2013-03-22 17:44:19 -0400 | [diff] [blame] | 4130 | else { |
J. Bruce Fields | 74dbafa | 2012-06-06 12:53:48 -0400 | [diff] [blame] | 4131 | /* |
| 4132 | * In the 4.0 case we need to keep the owners around a |
| 4133 | * little while to handle CLOSE replay. |
| 4134 | */ |
fanchaoting | 53584f6 | 2013-04-11 21:24:13 +0800 | [diff] [blame] | 4135 | move_to_close_lru(oo, SVC_NET(rqstp)); |
J. Bruce Fields | 74dbafa | 2012-06-06 12:53:48 -0400 | [diff] [blame] | 4136 | } |
| 4137 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4138 | out: |
J. Bruce Fields | 5ec094c | 2011-08-30 17:02:48 -0400 | [diff] [blame] | 4139 | if (!cstate->replay_owner) |
| 4140 | nfs4_unlock_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4141 | return status; |
| 4142 | } |
| 4143 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4144 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4145 | nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 4146 | struct nfsd4_delegreturn *dr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4147 | { |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 4148 | struct nfs4_delegation *dp; |
| 4149 | stateid_t *stateid = &dr->dr_stateid; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 4150 | struct nfs4_stid *s; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4151 | __be32 status; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4152 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4153 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4154 | if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 4155 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4156 | |
| 4157 | nfs4_lock_state(); |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4158 | status = nfsd4_lookup_stateid(stateid, NFS4_DELEG_STID, &s, |
| 4159 | cstate->minorversion, nn); |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 4160 | if (status) |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 4161 | goto out; |
J. Bruce Fields | 38c2f4b | 2011-09-23 17:01:19 -0400 | [diff] [blame] | 4162 | dp = delegstateid(s); |
J. Bruce Fields | d5477a8 | 2011-09-08 12:07:44 -0400 | [diff] [blame] | 4163 | status = check_stateid_generation(stateid, &dp->dl_stid.sc_stateid, nfsd4_has_session(cstate)); |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 4164 | if (status) |
| 4165 | goto out; |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 4166 | |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 4167 | destroy_delegation(dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4168 | out: |
J. Bruce Fields | 203a8c8 | 2009-02-21 13:29:14 -0800 | [diff] [blame] | 4169 | nfs4_unlock_state(); |
| 4170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4171 | return status; |
| 4172 | } |
| 4173 | |
| 4174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4175 | #define LOFF_OVERFLOW(start, len) ((u64)(len) > ~(u64)(start)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4176 | |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 4177 | #define LOCKOWNER_INO_HASH_MASK (LOCKOWNER_INO_HASH_SIZE - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4178 | |
Benny Halevy | 87df4de | 2008-12-15 19:42:03 +0200 | [diff] [blame] | 4179 | static inline u64 |
| 4180 | end_offset(u64 start, u64 len) |
| 4181 | { |
| 4182 | u64 end; |
| 4183 | |
| 4184 | end = start + len; |
| 4185 | return end >= start ? end: NFS4_MAX_UINT64; |
| 4186 | } |
| 4187 | |
| 4188 | /* last octet in a range */ |
| 4189 | static inline u64 |
| 4190 | last_byte_offset(u64 start, u64 len) |
| 4191 | { |
| 4192 | u64 end; |
| 4193 | |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 4194 | WARN_ON_ONCE(!len); |
Benny Halevy | 87df4de | 2008-12-15 19:42:03 +0200 | [diff] [blame] | 4195 | end = start + len; |
| 4196 | return end > start ? end - 1: NFS4_MAX_UINT64; |
| 4197 | } |
| 4198 | |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 4199 | static unsigned int lockowner_ino_hashval(struct inode *inode, u32 cl_id, struct xdr_netobj *ownername) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4200 | { |
| 4201 | return (file_hashval(inode) + cl_id |
| 4202 | + opaque_hashval(ownername->data, ownername->len)) |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 4203 | & LOCKOWNER_INO_HASH_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4204 | } |
| 4205 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4206 | /* |
| 4207 | * TODO: Linux file offsets are _signed_ 64-bit quantities, which means that |
| 4208 | * we can't properly handle lock requests that go beyond the (2^63 - 1)-th |
| 4209 | * byte, because of sign extension problems. Since NFSv4 calls for 64-bit |
| 4210 | * locking, this prevents us from being completely protocol-compliant. The |
| 4211 | * real solution to this problem is to start using unsigned file offsets in |
| 4212 | * the VFS, but this is a very deep change! |
| 4213 | */ |
| 4214 | static inline void |
| 4215 | nfs4_transform_lock_offset(struct file_lock *lock) |
| 4216 | { |
| 4217 | if (lock->fl_start < 0) |
| 4218 | lock->fl_start = OFFSET_MAX; |
| 4219 | if (lock->fl_end < 0) |
| 4220 | lock->fl_end = OFFSET_MAX; |
| 4221 | } |
| 4222 | |
NeilBrown | d5b9026 | 2006-04-10 22:55:22 -0700 | [diff] [blame] | 4223 | /* Hack!: For now, we're defining this just so we can use a pointer to it |
| 4224 | * as a unique cookie to identify our (NFSv4's) posix locks. */ |
Alexey Dobriyan | 7b02196 | 2009-09-21 17:01:12 -0700 | [diff] [blame] | 4225 | static const struct lock_manager_operations nfsd_posix_mng_ops = { |
NeilBrown | d5b9026 | 2006-04-10 22:55:22 -0700 | [diff] [blame] | 4226 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4227 | |
| 4228 | static inline void |
| 4229 | nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny) |
| 4230 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4231 | struct nfs4_lockowner *lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4232 | |
NeilBrown | d5b9026 | 2006-04-10 22:55:22 -0700 | [diff] [blame] | 4233 | if (fl->fl_lmops == &nfsd_posix_mng_ops) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4234 | lo = (struct nfs4_lockowner *) fl->fl_owner; |
| 4235 | deny->ld_owner.data = kmemdup(lo->lo_owner.so_owner.data, |
| 4236 | lo->lo_owner.so_owner.len, GFP_KERNEL); |
J. Bruce Fields | 7c13f34 | 2011-08-30 22:15:47 -0400 | [diff] [blame] | 4237 | if (!deny->ld_owner.data) |
| 4238 | /* We just don't care that much */ |
| 4239 | goto nevermind; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4240 | deny->ld_owner.len = lo->lo_owner.so_owner.len; |
| 4241 | deny->ld_clientid = lo->lo_owner.so_client->cl_clientid; |
NeilBrown | d5b9026 | 2006-04-10 22:55:22 -0700 | [diff] [blame] | 4242 | } else { |
J. Bruce Fields | 7c13f34 | 2011-08-30 22:15:47 -0400 | [diff] [blame] | 4243 | nevermind: |
| 4244 | deny->ld_owner.len = 0; |
| 4245 | deny->ld_owner.data = NULL; |
NeilBrown | d5b9026 | 2006-04-10 22:55:22 -0700 | [diff] [blame] | 4246 | deny->ld_clientid.cl_boot = 0; |
| 4247 | deny->ld_clientid.cl_id = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4248 | } |
| 4249 | deny->ld_start = fl->fl_start; |
Benny Halevy | 87df4de | 2008-12-15 19:42:03 +0200 | [diff] [blame] | 4250 | deny->ld_length = NFS4_MAX_UINT64; |
| 4251 | if (fl->fl_end != NFS4_MAX_UINT64) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4252 | deny->ld_length = fl->fl_end - fl->fl_start + 1; |
| 4253 | deny->ld_type = NFS4_READ_LT; |
| 4254 | if (fl->fl_type != F_RDLCK) |
| 4255 | deny->ld_type = NFS4_WRITE_LT; |
| 4256 | } |
| 4257 | |
J. Bruce Fields | b93d87c | 2011-11-07 16:37:57 -0500 | [diff] [blame] | 4258 | static bool same_lockowner_ino(struct nfs4_lockowner *lo, struct inode *inode, clientid_t *clid, struct xdr_netobj *owner) |
| 4259 | { |
| 4260 | struct nfs4_ol_stateid *lst; |
| 4261 | |
| 4262 | if (!same_owner_str(&lo->lo_owner, owner, clid)) |
| 4263 | return false; |
J. Bruce Fields | 27b1142 | 2014-05-08 11:19:41 -0400 | [diff] [blame] | 4264 | if (list_empty(&lo->lo_owner.so_stateids)) { |
| 4265 | WARN_ON_ONCE(1); |
| 4266 | return false; |
| 4267 | } |
J. Bruce Fields | b93d87c | 2011-11-07 16:37:57 -0500 | [diff] [blame] | 4268 | lst = list_first_entry(&lo->lo_owner.so_stateids, |
| 4269 | struct nfs4_ol_stateid, st_perstateowner); |
| 4270 | return lst->st_file->fi_inode == inode; |
| 4271 | } |
| 4272 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4273 | static struct nfs4_lockowner * |
| 4274 | find_lockowner_str(struct inode *inode, clientid_t *clid, |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 4275 | struct xdr_netobj *owner, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4276 | { |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 4277 | unsigned int hashval = lockowner_ino_hashval(inode, clid->cl_id, owner); |
J. Bruce Fields | b93d87c | 2011-11-07 16:37:57 -0500 | [diff] [blame] | 4278 | struct nfs4_lockowner *lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4279 | |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 4280 | list_for_each_entry(lo, &nn->lockowner_ino_hashtbl[hashval], lo_owner_ino_hash) { |
J. Bruce Fields | b93d87c | 2011-11-07 16:37:57 -0500 | [diff] [blame] | 4281 | if (same_lockowner_ino(lo, inode, clid, owner)) |
| 4282 | return lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4283 | } |
| 4284 | return NULL; |
| 4285 | } |
| 4286 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4287 | static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp) |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 4288 | { |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 4289 | struct inode *inode = open_stp->st_file->fi_inode; |
| 4290 | unsigned int inohash = lockowner_ino_hashval(inode, |
| 4291 | clp->cl_clientid.cl_id, &lo->lo_owner.so_owner); |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 4292 | struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); |
J. Bruce Fields | 009673b | 2011-11-07 17:40:10 -0500 | [diff] [blame] | 4293 | |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 4294 | list_add(&lo->lo_owner.so_strhash, &nn->ownerstr_hashtbl[strhashval]); |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 4295 | list_add(&lo->lo_owner_ino_hash, &nn->lockowner_ino_hashtbl[inohash]); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4296 | list_add(&lo->lo_perstateid, &open_stp->st_lockowners); |
J. Bruce Fields | ff194bd | 2011-08-12 09:42:57 -0400 | [diff] [blame] | 4297 | } |
| 4298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4299 | /* |
| 4300 | * Alloc a lock owner structure. |
| 4301 | * Called in nfsd4_lock - therefore, OPEN and OPEN_CONFIRM (if needed) has |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 4302 | * occurred. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4303 | * |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 4304 | * strhashval = ownerstr_hashval |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4305 | */ |
| 4306 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4307 | static struct nfs4_lockowner * |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4308 | alloc_init_lock_stateowner(unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp, struct nfsd4_lock *lock) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4309 | struct nfs4_lockowner *lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4310 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4311 | lo = alloc_stateowner(lockowner_slab, &lock->lk_new_owner, clp); |
| 4312 | if (!lo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4313 | return NULL; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4314 | INIT_LIST_HEAD(&lo->lo_owner.so_stateids); |
| 4315 | lo->lo_owner.so_is_open_owner = 0; |
Neil Brown | b59e3c0 | 2005-09-13 01:25:38 -0700 | [diff] [blame] | 4316 | /* It is the openowner seqid that will be incremented in encode in the |
| 4317 | * case of new lockowners; so increment the lock seqid manually: */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4318 | lo->lo_owner.so_seqid = lock->lk_new_lock_seqid + 1; |
| 4319 | hash_lockowner(lo, strhashval, clp, open_stp); |
| 4320 | return lo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4321 | } |
| 4322 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4323 | static struct nfs4_ol_stateid * |
| 4324 | alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct nfs4_ol_stateid *open_stp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4325 | { |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4326 | struct nfs4_ol_stateid *stp; |
J. Bruce Fields | d3b313a | 2011-09-15 15:02:41 -0400 | [diff] [blame] | 4327 | struct nfs4_client *clp = lo->lo_owner.so_client; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4328 | |
J. Bruce Fields | 996e093 | 2011-10-17 11:14:48 -0400 | [diff] [blame] | 4329 | stp = nfs4_alloc_stateid(clp); |
NeilBrown | 5ac049a | 2005-06-23 22:03:03 -0700 | [diff] [blame] | 4330 | if (stp == NULL) |
J. Bruce Fields | 6136d2b | 2011-09-23 16:21:15 -0400 | [diff] [blame] | 4331 | return NULL; |
J. Bruce Fields | 3abdb60 | 2013-02-03 12:23:01 -0500 | [diff] [blame] | 4332 | stp->st_stid.sc_type = NFS4_LOCK_STID; |
NeilBrown | 8beefa2 | 2005-06-23 22:03:08 -0700 | [diff] [blame] | 4333 | list_add(&stp->st_perfile, &fp->fi_stateids); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4334 | list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids); |
| 4335 | stp->st_stateowner = &lo->lo_owner; |
NeilBrown | 13cd218 | 2005-06-23 22:03:10 -0700 | [diff] [blame] | 4336 | get_nfs4_file(fp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4337 | stp->st_file = fp; |
J. Bruce Fields | 0997b17 | 2011-03-02 18:01:35 -0500 | [diff] [blame] | 4338 | stp->st_access_bmap = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4339 | stp->st_deny_bmap = open_stp->st_deny_bmap; |
NeilBrown | 4c4cd22 | 2005-07-07 17:59:27 -0700 | [diff] [blame] | 4340 | stp->st_openstp = open_stp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4341 | return stp; |
| 4342 | } |
| 4343 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 4344 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4345 | check_lock_length(u64 offset, u64 length) |
| 4346 | { |
Benny Halevy | 87df4de | 2008-12-15 19:42:03 +0200 | [diff] [blame] | 4347 | return ((length == 0) || ((length != NFS4_MAX_UINT64) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4348 | LOFF_OVERFLOW(offset, length))); |
| 4349 | } |
| 4350 | |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4351 | static void get_lock_access(struct nfs4_ol_stateid *lock_stp, u32 access) |
J. Bruce Fields | 0997b17 | 2011-03-02 18:01:35 -0500 | [diff] [blame] | 4352 | { |
| 4353 | struct nfs4_file *fp = lock_stp->st_file; |
| 4354 | int oflag = nfs4_access_to_omode(access); |
| 4355 | |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 4356 | if (test_access(access, lock_stp)) |
J. Bruce Fields | 0997b17 | 2011-03-02 18:01:35 -0500 | [diff] [blame] | 4357 | return; |
| 4358 | nfs4_file_get_access(fp, oflag); |
Jeff Layton | 82c5ff1 | 2012-05-11 09:45:13 -0400 | [diff] [blame] | 4359 | set_access(access, lock_stp); |
J. Bruce Fields | 0997b17 | 2011-03-02 18:01:35 -0500 | [diff] [blame] | 4360 | } |
| 4361 | |
J. Bruce Fields | 2355c59 | 2012-04-25 16:56:22 -0400 | [diff] [blame] | 4362 | static __be32 lookup_or_create_lock_state(struct nfsd4_compound_state *cstate, struct nfs4_ol_stateid *ost, struct nfsd4_lock *lock, struct nfs4_ol_stateid **lst, bool *new) |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4363 | { |
| 4364 | struct nfs4_file *fi = ost->st_file; |
| 4365 | struct nfs4_openowner *oo = openowner(ost->st_stateowner); |
| 4366 | struct nfs4_client *cl = oo->oo_owner.so_client; |
| 4367 | struct nfs4_lockowner *lo; |
| 4368 | unsigned int strhashval; |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 4369 | struct nfsd_net *nn = net_generic(cl->net, nfsd_net_id); |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4370 | |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 4371 | lo = find_lockowner_str(fi->fi_inode, &cl->cl_clientid, |
| 4372 | &lock->v.new.owner, nn); |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4373 | if (lo) { |
| 4374 | if (!cstate->minorversion) |
| 4375 | return nfserr_bad_seqid; |
| 4376 | /* XXX: a lockowner always has exactly one stateid: */ |
| 4377 | *lst = list_first_entry(&lo->lo_owner.so_stateids, |
| 4378 | struct nfs4_ol_stateid, st_perstateowner); |
| 4379 | return nfs_ok; |
| 4380 | } |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 4381 | strhashval = ownerstr_hashval(cl->cl_clientid.cl_id, |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4382 | &lock->v.new.owner); |
| 4383 | lo = alloc_init_lock_stateowner(strhashval, cl, ost, lock); |
| 4384 | if (lo == NULL) |
| 4385 | return nfserr_jukebox; |
| 4386 | *lst = alloc_init_lock_stateid(lo, fi, ost); |
| 4387 | if (*lst == NULL) { |
| 4388 | release_lockowner(lo); |
| 4389 | return nfserr_jukebox; |
| 4390 | } |
| 4391 | *new = true; |
| 4392 | return nfs_ok; |
| 4393 | } |
| 4394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4395 | /* |
| 4396 | * LOCK operation |
| 4397 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4398 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4399 | nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 4400 | struct nfsd4_lock *lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4401 | { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4402 | struct nfs4_openowner *open_sop = NULL; |
| 4403 | struct nfs4_lockowner *lock_sop = NULL; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4404 | struct nfs4_ol_stateid *lock_stp; |
J. Bruce Fields | 7d94784 | 2010-08-20 18:09:31 -0400 | [diff] [blame] | 4405 | struct file *filp = NULL; |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4406 | struct file_lock *file_lock = NULL; |
| 4407 | struct file_lock *conflock = NULL; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4408 | __be32 status = 0; |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4409 | bool new_state = false; |
J. Bruce Fields | b34f27a | 2011-08-22 13:13:31 -0400 | [diff] [blame] | 4410 | int lkflg; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 4411 | int err; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4412 | struct net *net = SVC_NET(rqstp); |
| 4413 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4414 | |
| 4415 | dprintk("NFSD: nfsd4_lock: start=%Ld length=%Ld\n", |
| 4416 | (long long) lock->lk_offset, |
| 4417 | (long long) lock->lk_length); |
| 4418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4419 | if (check_lock_length(lock->lk_offset, lock->lk_length)) |
| 4420 | return nfserr_inval; |
| 4421 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4422 | if ((status = fh_verify(rqstp, &cstate->current_fh, |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 4423 | S_IFREG, NFSD_MAY_LOCK))) { |
Andy Adamson | a6f6ef2 | 2006-01-18 17:43:17 -0800 | [diff] [blame] | 4424 | dprintk("NFSD: nfsd4_lock: permission denied!\n"); |
| 4425 | return status; |
| 4426 | } |
| 4427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4428 | nfs4_lock_state(); |
| 4429 | |
| 4430 | if (lock->lk_is_new) { |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4431 | struct nfs4_ol_stateid *open_stp = NULL; |
J. Bruce Fields | 684e563 | 2011-11-04 17:08:10 -0400 | [diff] [blame] | 4432 | |
| 4433 | if (nfsd4_has_session(cstate)) |
| 4434 | /* See rfc 5661 18.10.3: given clientid is ignored: */ |
| 4435 | memcpy(&lock->v.new.clientid, |
| 4436 | &cstate->session->se_client->cl_clientid, |
| 4437 | sizeof(clientid_t)); |
| 4438 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4439 | status = nfserr_stale_clientid; |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 4440 | if (STALE_CLIENTID(&lock->lk_new_clientid, nn)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4441 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4443 | /* validate and update open stateid and open seqid */ |
J. Bruce Fields | c0a5d93 | 2011-09-06 15:19:46 -0400 | [diff] [blame] | 4444 | status = nfs4_preprocess_confirmed_seqid_op(cstate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4445 | lock->lk_new_open_seqid, |
| 4446 | &lock->lk_new_open_stateid, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4447 | &open_stp, nn); |
NeilBrown | 3751517 | 2005-07-07 17:59:16 -0700 | [diff] [blame] | 4448 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4449 | goto out; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4450 | open_sop = openowner(open_stp->st_stateowner); |
J. Bruce Fields | b34f27a | 2011-08-22 13:13:31 -0400 | [diff] [blame] | 4451 | status = nfserr_bad_stateid; |
J. Bruce Fields | 684e563 | 2011-11-04 17:08:10 -0400 | [diff] [blame] | 4452 | if (!same_clid(&open_sop->oo_owner.so_client->cl_clientid, |
J. Bruce Fields | b34f27a | 2011-08-22 13:13:31 -0400 | [diff] [blame] | 4453 | &lock->v.new.clientid)) |
| 4454 | goto out; |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4455 | status = lookup_or_create_lock_state(cstate, open_stp, lock, |
| 4456 | &lock_stp, &new_state); |
J. Bruce Fields | e1aaa89 | 2012-06-06 16:01:37 -0400 | [diff] [blame] | 4457 | } else |
Benny Halevy | dd453df | 2009-04-03 08:28:41 +0300 | [diff] [blame] | 4458 | status = nfs4_preprocess_seqid_op(cstate, |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4459 | lock->lk_old_lock_seqid, |
| 4460 | &lock->lk_old_lock_stateid, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4461 | NFS4_LOCK_STID, &lock_stp, nn); |
J. Bruce Fields | e1aaa89 | 2012-06-06 16:01:37 -0400 | [diff] [blame] | 4462 | if (status) |
| 4463 | goto out; |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4464 | lock_sop = lockowner(lock_stp->st_stateowner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4465 | |
J. Bruce Fields | b34f27a | 2011-08-22 13:13:31 -0400 | [diff] [blame] | 4466 | lkflg = setlkflg(lock->lk_type); |
| 4467 | status = nfs4_check_openmode(lock_stp, lkflg); |
| 4468 | if (status) |
| 4469 | goto out; |
| 4470 | |
NeilBrown | 0dd395d | 2005-07-07 17:59:15 -0700 | [diff] [blame] | 4471 | status = nfserr_grace; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4472 | if (locks_in_grace(net) && !lock->lk_reclaim) |
NeilBrown | 0dd395d | 2005-07-07 17:59:15 -0700 | [diff] [blame] | 4473 | goto out; |
| 4474 | status = nfserr_no_grace; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4475 | if (!locks_in_grace(net) && lock->lk_reclaim) |
NeilBrown | 0dd395d | 2005-07-07 17:59:15 -0700 | [diff] [blame] | 4476 | goto out; |
| 4477 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4478 | file_lock = locks_alloc_lock(); |
| 4479 | if (!file_lock) { |
| 4480 | dprintk("NFSD: %s: unable to allocate lock!\n", __func__); |
| 4481 | status = nfserr_jukebox; |
| 4482 | goto out; |
| 4483 | } |
| 4484 | |
| 4485 | locks_init_lock(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4486 | switch (lock->lk_type) { |
| 4487 | case NFS4_READ_LT: |
| 4488 | case NFS4_READW_LT: |
J. Bruce Fields | 0997b17 | 2011-03-02 18:01:35 -0500 | [diff] [blame] | 4489 | filp = find_readable_file(lock_stp->st_file); |
| 4490 | if (filp) |
| 4491 | get_lock_access(lock_stp, NFS4_SHARE_ACCESS_READ); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4492 | file_lock->fl_type = F_RDLCK; |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 4493 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4494 | case NFS4_WRITE_LT: |
| 4495 | case NFS4_WRITEW_LT: |
J. Bruce Fields | 0997b17 | 2011-03-02 18:01:35 -0500 | [diff] [blame] | 4496 | filp = find_writeable_file(lock_stp->st_file); |
| 4497 | if (filp) |
| 4498 | get_lock_access(lock_stp, NFS4_SHARE_ACCESS_WRITE); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4499 | file_lock->fl_type = F_WRLCK; |
J. Bruce Fields | 529d7b2 | 2011-03-02 23:48:33 -0500 | [diff] [blame] | 4500 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4501 | default: |
| 4502 | status = nfserr_inval; |
| 4503 | goto out; |
| 4504 | } |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 4505 | if (!filp) { |
| 4506 | status = nfserr_openmode; |
| 4507 | goto out; |
| 4508 | } |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4509 | file_lock->fl_owner = (fl_owner_t)lock_sop; |
| 4510 | file_lock->fl_pid = current->tgid; |
| 4511 | file_lock->fl_file = filp; |
| 4512 | file_lock->fl_flags = FL_POSIX; |
| 4513 | file_lock->fl_lmops = &nfsd_posix_mng_ops; |
| 4514 | file_lock->fl_start = lock->lk_offset; |
| 4515 | file_lock->fl_end = last_byte_offset(lock->lk_offset, lock->lk_length); |
| 4516 | nfs4_transform_lock_offset(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4517 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4518 | conflock = locks_alloc_lock(); |
| 4519 | if (!conflock) { |
| 4520 | dprintk("NFSD: %s: unable to allocate lock!\n", __func__); |
| 4521 | status = nfserr_jukebox; |
| 4522 | goto out; |
| 4523 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4524 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4525 | err = vfs_lock_file(filp, F_SETLK, file_lock, conflock); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 4526 | switch (-err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4527 | case 0: /* success! */ |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4528 | update_stateid(&lock_stp->st_stid.sc_stateid); |
| 4529 | memcpy(&lock->lk_resp_stateid, &lock_stp->st_stid.sc_stateid, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4530 | sizeof(stateid_t)); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 4531 | status = 0; |
Andy Adamson | eb76b3f | 2006-03-26 01:37:26 -0800 | [diff] [blame] | 4532 | break; |
| 4533 | case (EAGAIN): /* conflock holds conflicting lock */ |
| 4534 | status = nfserr_denied; |
| 4535 | dprintk("NFSD: nfsd4_lock: conflicting lock found!\n"); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4536 | nfs4_set_lock_denied(conflock, &lock->lk_denied); |
Andy Adamson | eb76b3f | 2006-03-26 01:37:26 -0800 | [diff] [blame] | 4537 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4538 | case (EDEADLK): |
| 4539 | status = nfserr_deadlock; |
Andy Adamson | eb76b3f | 2006-03-26 01:37:26 -0800 | [diff] [blame] | 4540 | break; |
J. Bruce Fields | 3e77246 | 2011-08-10 19:07:33 -0400 | [diff] [blame] | 4541 | default: |
Marc Eshel | fd85b81 | 2006-11-28 16:26:41 -0500 | [diff] [blame] | 4542 | dprintk("NFSD: nfsd4_lock: vfs_lock_file() failed! status %d\n",err); |
J. Bruce Fields | 3e77246 | 2011-08-10 19:07:33 -0400 | [diff] [blame] | 4543 | status = nfserrno(err); |
Andy Adamson | eb76b3f | 2006-03-26 01:37:26 -0800 | [diff] [blame] | 4544 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4545 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4546 | out: |
J. Bruce Fields | 64a284d | 2011-10-20 06:57:46 -0400 | [diff] [blame] | 4547 | if (status && new_state) |
J. Bruce Fields | f044ff8 | 2009-01-11 15:24:04 -0500 | [diff] [blame] | 4548 | release_lockowner(lock_sop); |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4549 | nfsd4_bump_seqid(cstate, status); |
J. Bruce Fields | 5ec094c | 2011-08-30 17:02:48 -0400 | [diff] [blame] | 4550 | if (!cstate->replay_owner) |
| 4551 | nfs4_unlock_state(); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4552 | if (file_lock) |
| 4553 | locks_free_lock(file_lock); |
| 4554 | if (conflock) |
| 4555 | locks_free_lock(conflock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4556 | return status; |
| 4557 | } |
| 4558 | |
| 4559 | /* |
J. Bruce Fields | 55ef127 | 2008-12-20 11:58:38 -0800 | [diff] [blame] | 4560 | * The NFSv4 spec allows a client to do a LOCKT without holding an OPEN, |
| 4561 | * so we do a temporary open here just to get an open file to pass to |
| 4562 | * vfs_test_lock. (Arguably perhaps test_lock should be done with an |
| 4563 | * inode operation.) |
| 4564 | */ |
Al Viro | 04da6e9 | 2012-04-13 00:00:04 -0400 | [diff] [blame] | 4565 | static __be32 nfsd_test_lock(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file_lock *lock) |
J. Bruce Fields | 55ef127 | 2008-12-20 11:58:38 -0800 | [diff] [blame] | 4566 | { |
| 4567 | struct file *file; |
Al Viro | 04da6e9 | 2012-04-13 00:00:04 -0400 | [diff] [blame] | 4568 | __be32 err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file); |
| 4569 | if (!err) { |
| 4570 | err = nfserrno(vfs_test_lock(file, lock)); |
| 4571 | nfsd_close(file); |
| 4572 | } |
J. Bruce Fields | 55ef127 | 2008-12-20 11:58:38 -0800 | [diff] [blame] | 4573 | return err; |
| 4574 | } |
| 4575 | |
| 4576 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4577 | * LOCKT operation |
| 4578 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4579 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4580 | nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 4581 | struct nfsd4_lockt *lockt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4582 | { |
| 4583 | struct inode *inode; |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4584 | struct file_lock *file_lock = NULL; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4585 | struct nfs4_lockowner *lo; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4586 | __be32 status; |
Stanislav Kinsbursky | 7f2210f | 2012-11-14 18:21:05 +0300 | [diff] [blame] | 4587 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4588 | |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 4589 | if (locks_in_grace(SVC_NET(rqstp))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4590 | return nfserr_grace; |
| 4591 | |
| 4592 | if (check_lock_length(lockt->lt_offset, lockt->lt_length)) |
| 4593 | return nfserr_inval; |
| 4594 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4595 | nfs4_lock_state(); |
| 4596 | |
J. Bruce Fields | 9b2ef62 | 2012-12-03 17:24:41 -0500 | [diff] [blame] | 4597 | if (!nfsd4_has_session(cstate)) { |
| 4598 | status = lookup_clientid(&lockt->lt_clientid, false, nn, NULL); |
| 4599 | if (status) |
| 4600 | goto out; |
| 4601 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4602 | |
J. Bruce Fields | 75c096f | 2011-08-15 18:39:32 -0400 | [diff] [blame] | 4603 | if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4604 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4605 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4606 | inode = cstate->current_fh.fh_dentry->d_inode; |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4607 | file_lock = locks_alloc_lock(); |
| 4608 | if (!file_lock) { |
| 4609 | dprintk("NFSD: %s: unable to allocate lock!\n", __func__); |
| 4610 | status = nfserr_jukebox; |
| 4611 | goto out; |
| 4612 | } |
| 4613 | locks_init_lock(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4614 | switch (lockt->lt_type) { |
| 4615 | case NFS4_READ_LT: |
| 4616 | case NFS4_READW_LT: |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4617 | file_lock->fl_type = F_RDLCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4618 | break; |
| 4619 | case NFS4_WRITE_LT: |
| 4620 | case NFS4_WRITEW_LT: |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4621 | file_lock->fl_type = F_WRLCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4622 | break; |
| 4623 | default: |
J. Bruce Fields | 2fdada0 | 2007-07-27 16:10:37 -0400 | [diff] [blame] | 4624 | dprintk("NFSD: nfs4_lockt: bad lock type!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4625 | status = nfserr_inval; |
| 4626 | goto out; |
| 4627 | } |
| 4628 | |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 4629 | lo = find_lockowner_str(inode, &lockt->lt_clientid, &lockt->lt_owner, nn); |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4630 | if (lo) |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4631 | file_lock->fl_owner = (fl_owner_t)lo; |
| 4632 | file_lock->fl_pid = current->tgid; |
| 4633 | file_lock->fl_flags = FL_POSIX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4634 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4635 | file_lock->fl_start = lockt->lt_offset; |
| 4636 | file_lock->fl_end = last_byte_offset(lockt->lt_offset, lockt->lt_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4637 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4638 | nfs4_transform_lock_offset(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4639 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4640 | status = nfsd_test_lock(rqstp, &cstate->current_fh, file_lock); |
Al Viro | 04da6e9 | 2012-04-13 00:00:04 -0400 | [diff] [blame] | 4641 | if (status) |
Marc Eshel | fd85b81 | 2006-11-28 16:26:41 -0500 | [diff] [blame] | 4642 | goto out; |
Al Viro | 04da6e9 | 2012-04-13 00:00:04 -0400 | [diff] [blame] | 4643 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4644 | if (file_lock->fl_type != F_UNLCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4645 | status = nfserr_denied; |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4646 | nfs4_set_lock_denied(file_lock, &lockt->lt_denied); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4647 | } |
| 4648 | out: |
| 4649 | nfs4_unlock_state(); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4650 | if (file_lock) |
| 4651 | locks_free_lock(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4652 | return status; |
| 4653 | } |
| 4654 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4655 | __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 4656 | nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 4657 | struct nfsd4_locku *locku) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4658 | { |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4659 | struct nfs4_ol_stateid *stp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4660 | struct file *filp = NULL; |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4661 | struct file_lock *file_lock = NULL; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4662 | __be32 status; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 4663 | int err; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4664 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
| 4665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4666 | dprintk("NFSD: nfsd4_locku: start=%Ld length=%Ld\n", |
| 4667 | (long long) locku->lu_offset, |
| 4668 | (long long) locku->lu_length); |
| 4669 | |
| 4670 | if (check_lock_length(locku->lu_offset, locku->lu_length)) |
| 4671 | return nfserr_inval; |
| 4672 | |
| 4673 | nfs4_lock_state(); |
| 4674 | |
J. Bruce Fields | 9072d5c | 2011-08-24 12:45:03 -0400 | [diff] [blame] | 4675 | status = nfs4_preprocess_seqid_op(cstate, locku->lu_seqid, |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4676 | &locku->lu_stateid, NFS4_LOCK_STID, |
| 4677 | &stp, nn); |
J. Bruce Fields | 9072d5c | 2011-08-24 12:45:03 -0400 | [diff] [blame] | 4678 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4679 | goto out; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 4680 | filp = find_any_file(stp->st_file); |
| 4681 | if (!filp) { |
| 4682 | status = nfserr_lock_range; |
| 4683 | goto out; |
| 4684 | } |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4685 | file_lock = locks_alloc_lock(); |
| 4686 | if (!file_lock) { |
| 4687 | dprintk("NFSD: %s: unable to allocate lock!\n", __func__); |
| 4688 | status = nfserr_jukebox; |
| 4689 | goto out; |
| 4690 | } |
| 4691 | locks_init_lock(file_lock); |
| 4692 | file_lock->fl_type = F_UNLCK; |
J. Bruce Fields | 0a262ff | 2013-06-17 17:29:40 -0400 | [diff] [blame] | 4693 | file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4694 | file_lock->fl_pid = current->tgid; |
| 4695 | file_lock->fl_file = filp; |
| 4696 | file_lock->fl_flags = FL_POSIX; |
| 4697 | file_lock->fl_lmops = &nfsd_posix_mng_ops; |
| 4698 | file_lock->fl_start = locku->lu_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4699 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4700 | file_lock->fl_end = last_byte_offset(locku->lu_offset, |
| 4701 | locku->lu_length); |
| 4702 | nfs4_transform_lock_offset(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4703 | |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4704 | err = vfs_lock_file(filp, F_SETLK, file_lock, NULL); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 4705 | if (err) { |
Marc Eshel | fd85b81 | 2006-11-28 16:26:41 -0500 | [diff] [blame] | 4706 | dprintk("NFSD: nfs4_locku: vfs_lock_file failed!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4707 | goto out_nfserr; |
| 4708 | } |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4709 | update_stateid(&stp->st_stid.sc_stateid); |
| 4710 | memcpy(&locku->lu_stateid, &stp->st_stid.sc_stateid, sizeof(stateid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4711 | |
| 4712 | out: |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 4713 | nfsd4_bump_seqid(cstate, status); |
J. Bruce Fields | 71c3bcd | 2011-09-27 21:42:29 -0400 | [diff] [blame] | 4714 | if (!cstate->replay_owner) |
| 4715 | nfs4_unlock_state(); |
Jeff Layton | 21179d8 | 2012-08-21 08:03:32 -0400 | [diff] [blame] | 4716 | if (file_lock) |
| 4717 | locks_free_lock(file_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4718 | return status; |
| 4719 | |
| 4720 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 4721 | status = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4722 | goto out; |
| 4723 | } |
| 4724 | |
| 4725 | /* |
| 4726 | * returns |
| 4727 | * 1: locks held by lockowner |
| 4728 | * 0: no locks held by lockowner |
| 4729 | */ |
| 4730 | static int |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4731 | check_for_locks(struct nfs4_file *filp, struct nfs4_lockowner *lowner) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4732 | { |
| 4733 | struct file_lock **flpp; |
J. Bruce Fields | f9d7562 | 2010-07-08 11:02:09 -0400 | [diff] [blame] | 4734 | struct inode *inode = filp->fi_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4735 | int status = 0; |
| 4736 | |
Jeff Layton | 1c8c601 | 2013-06-21 08:58:15 -0400 | [diff] [blame] | 4737 | spin_lock(&inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4738 | for (flpp = &inode->i_flock; *flpp != NULL; flpp = &(*flpp)->fl_next) { |
J. Bruce Fields | 796dadf | 2006-01-18 17:43:22 -0800 | [diff] [blame] | 4739 | if ((*flpp)->fl_owner == (fl_owner_t)lowner) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4740 | status = 1; |
| 4741 | goto out; |
J. Bruce Fields | 796dadf | 2006-01-18 17:43:22 -0800 | [diff] [blame] | 4742 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4743 | } |
| 4744 | out: |
Jeff Layton | 1c8c601 | 2013-06-21 08:58:15 -0400 | [diff] [blame] | 4745 | spin_unlock(&inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4746 | return status; |
| 4747 | } |
| 4748 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4749 | __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 4750 | nfsd4_release_lockowner(struct svc_rqst *rqstp, |
| 4751 | struct nfsd4_compound_state *cstate, |
| 4752 | struct nfsd4_release_lockowner *rlockowner) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4753 | { |
| 4754 | clientid_t *clid = &rlockowner->rl_clientid; |
NeilBrown | 3e9e3db | 2005-06-23 22:04:20 -0700 | [diff] [blame] | 4755 | struct nfs4_stateowner *sop; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4756 | struct nfs4_lockowner *lo; |
J. Bruce Fields | dcef041 | 2011-09-07 16:06:42 -0400 | [diff] [blame] | 4757 | struct nfs4_ol_stateid *stp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4758 | struct xdr_netobj *owner = &rlockowner->rl_owner; |
NeilBrown | 3e9e3db | 2005-06-23 22:04:20 -0700 | [diff] [blame] | 4759 | struct list_head matches; |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 4760 | unsigned int hashval = ownerstr_hashval(clid->cl_id, owner); |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4761 | __be32 status; |
Stanislav Kinsbursky | 7f2210f | 2012-11-14 18:21:05 +0300 | [diff] [blame] | 4762 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4763 | |
| 4764 | dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n", |
| 4765 | clid->cl_boot, clid->cl_id); |
| 4766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4767 | nfs4_lock_state(); |
| 4768 | |
J. Bruce Fields | 9b2ef62 | 2012-12-03 17:24:41 -0500 | [diff] [blame] | 4769 | status = lookup_clientid(clid, cstate->minorversion, nn, NULL); |
| 4770 | if (status) |
| 4771 | goto out; |
| 4772 | |
NeilBrown | 3e9e3db | 2005-06-23 22:04:20 -0700 | [diff] [blame] | 4773 | status = nfserr_locks_held; |
NeilBrown | 3e9e3db | 2005-06-23 22:04:20 -0700 | [diff] [blame] | 4774 | INIT_LIST_HEAD(&matches); |
J. Bruce Fields | 06f1f86 | 2011-11-07 16:58:18 -0500 | [diff] [blame] | 4775 | |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 4776 | list_for_each_entry(sop, &nn->ownerstr_hashtbl[hashval], so_strhash) { |
J. Bruce Fields | 16bfdaaf | 2011-11-07 17:23:30 -0500 | [diff] [blame] | 4777 | if (sop->so_is_open_owner) |
| 4778 | continue; |
J. Bruce Fields | 06f1f86 | 2011-11-07 16:58:18 -0500 | [diff] [blame] | 4779 | if (!same_owner_str(sop, owner, clid)) |
| 4780 | continue; |
| 4781 | list_for_each_entry(stp, &sop->so_stateids, |
| 4782 | st_perstateowner) { |
| 4783 | lo = lockowner(sop); |
| 4784 | if (check_for_locks(stp->st_file, lo)) |
| 4785 | goto out; |
| 4786 | list_add(&lo->lo_list, &matches); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4787 | } |
NeilBrown | 3e9e3db | 2005-06-23 22:04:20 -0700 | [diff] [blame] | 4788 | } |
| 4789 | /* Clients probably won't expect us to return with some (but not all) |
| 4790 | * of the lockowner state released; so don't release any until all |
| 4791 | * have been checked. */ |
| 4792 | status = nfs_ok; |
NeilBrown | 0fa822e | 2005-07-07 17:59:14 -0700 | [diff] [blame] | 4793 | while (!list_empty(&matches)) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4794 | lo = list_entry(matches.next, struct nfs4_lockowner, |
| 4795 | lo_list); |
NeilBrown | 0fa822e | 2005-07-07 17:59:14 -0700 | [diff] [blame] | 4796 | /* unhash_stateowner deletes so_perclient only |
| 4797 | * for openowners. */ |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 4798 | list_del(&lo->lo_list); |
| 4799 | release_lockowner(lo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4800 | } |
| 4801 | out: |
| 4802 | nfs4_unlock_state(); |
| 4803 | return status; |
| 4804 | } |
| 4805 | |
| 4806 | static inline struct nfs4_client_reclaim * |
NeilBrown | a55370a | 2005-06-23 22:03:52 -0700 | [diff] [blame] | 4807 | alloc_reclaim(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4808 | { |
NeilBrown | a55370a | 2005-06-23 22:03:52 -0700 | [diff] [blame] | 4809 | return kmalloc(sizeof(struct nfs4_client_reclaim), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4810 | } |
| 4811 | |
Jeff Layton | 0ce0c2b | 2012-11-12 15:00:55 -0500 | [diff] [blame] | 4812 | bool |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4813 | nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn) |
NeilBrown | c7b9a45 | 2005-06-23 22:04:30 -0700 | [diff] [blame] | 4814 | { |
Jeff Layton | 0ce0c2b | 2012-11-12 15:00:55 -0500 | [diff] [blame] | 4815 | struct nfs4_client_reclaim *crp; |
NeilBrown | c7b9a45 | 2005-06-23 22:04:30 -0700 | [diff] [blame] | 4816 | |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4817 | crp = nfsd4_find_reclaim_client(name, nn); |
Jeff Layton | 0ce0c2b | 2012-11-12 15:00:55 -0500 | [diff] [blame] | 4818 | return (crp && crp->cr_clp); |
NeilBrown | c7b9a45 | 2005-06-23 22:04:30 -0700 | [diff] [blame] | 4819 | } |
| 4820 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4821 | /* |
| 4822 | * failure => all reset bets are off, nfserr_no_grace... |
| 4823 | */ |
Jeff Layton | 772a9bb | 2012-11-12 15:00:54 -0500 | [diff] [blame] | 4824 | struct nfs4_client_reclaim * |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4825 | nfs4_client_to_reclaim(const char *name, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4826 | { |
| 4827 | unsigned int strhashval; |
Jeff Layton | 772a9bb | 2012-11-12 15:00:54 -0500 | [diff] [blame] | 4828 | struct nfs4_client_reclaim *crp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4829 | |
NeilBrown | a55370a | 2005-06-23 22:03:52 -0700 | [diff] [blame] | 4830 | dprintk("NFSD nfs4_client_to_reclaim NAME: %.*s\n", HEXDIR_LEN, name); |
| 4831 | crp = alloc_reclaim(); |
Jeff Layton | 772a9bb | 2012-11-12 15:00:54 -0500 | [diff] [blame] | 4832 | if (crp) { |
| 4833 | strhashval = clientstr_hashval(name); |
| 4834 | INIT_LIST_HEAD(&crp->cr_strhash); |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4835 | list_add(&crp->cr_strhash, &nn->reclaim_str_hashtbl[strhashval]); |
Jeff Layton | 772a9bb | 2012-11-12 15:00:54 -0500 | [diff] [blame] | 4836 | memcpy(crp->cr_recdir, name, HEXDIR_LEN); |
Jeff Layton | 0ce0c2b | 2012-11-12 15:00:55 -0500 | [diff] [blame] | 4837 | crp->cr_clp = NULL; |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4838 | nn->reclaim_str_hashtbl_size++; |
Jeff Layton | 772a9bb | 2012-11-12 15:00:54 -0500 | [diff] [blame] | 4839 | } |
| 4840 | return crp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4841 | } |
| 4842 | |
Jeff Layton | 2a4317c | 2012-03-21 16:42:43 -0400 | [diff] [blame] | 4843 | void |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4844 | nfs4_remove_reclaim_record(struct nfs4_client_reclaim *crp, struct nfsd_net *nn) |
Jeff Layton | ce30e53 | 2012-11-12 15:00:53 -0500 | [diff] [blame] | 4845 | { |
| 4846 | list_del(&crp->cr_strhash); |
| 4847 | kfree(crp); |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4848 | nn->reclaim_str_hashtbl_size--; |
Jeff Layton | ce30e53 | 2012-11-12 15:00:53 -0500 | [diff] [blame] | 4849 | } |
| 4850 | |
| 4851 | void |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4852 | nfs4_release_reclaim(struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4853 | { |
| 4854 | struct nfs4_client_reclaim *crp = NULL; |
| 4855 | int i; |
| 4856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4857 | for (i = 0; i < CLIENT_HASH_SIZE; i++) { |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4858 | while (!list_empty(&nn->reclaim_str_hashtbl[i])) { |
| 4859 | crp = list_entry(nn->reclaim_str_hashtbl[i].next, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4860 | struct nfs4_client_reclaim, cr_strhash); |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4861 | nfs4_remove_reclaim_record(crp, nn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4862 | } |
| 4863 | } |
J. Bruce Fields | 063b0fb | 2012-11-25 14:48:10 -0500 | [diff] [blame] | 4864 | WARN_ON_ONCE(nn->reclaim_str_hashtbl_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4865 | } |
| 4866 | |
| 4867 | /* |
| 4868 | * called from OPEN, CLAIM_PREVIOUS with a new clientid. */ |
Jeff Layton | 2a4317c | 2012-03-21 16:42:43 -0400 | [diff] [blame] | 4869 | struct nfs4_client_reclaim * |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4870 | nfsd4_find_reclaim_client(const char *recdir, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4871 | { |
| 4872 | unsigned int strhashval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4873 | struct nfs4_client_reclaim *crp = NULL; |
| 4874 | |
Jeff Layton | 278c931 | 2012-11-12 15:00:52 -0500 | [diff] [blame] | 4875 | dprintk("NFSD: nfs4_find_reclaim_client for recdir %s\n", recdir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4876 | |
Jeff Layton | 278c931 | 2012-11-12 15:00:52 -0500 | [diff] [blame] | 4877 | strhashval = clientstr_hashval(recdir); |
Stanislav Kinsbursky | 52e19c0 | 2012-11-14 18:21:16 +0300 | [diff] [blame] | 4878 | list_for_each_entry(crp, &nn->reclaim_str_hashtbl[strhashval], cr_strhash) { |
Jeff Layton | 278c931 | 2012-11-12 15:00:52 -0500 | [diff] [blame] | 4879 | if (same_name(crp->cr_recdir, recdir)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4880 | return crp; |
| 4881 | } |
| 4882 | } |
| 4883 | return NULL; |
| 4884 | } |
| 4885 | |
| 4886 | /* |
| 4887 | * Called from OPEN. Look for clientid in reclaim list. |
| 4888 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 4889 | __be32 |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 4890 | nfs4_check_open_reclaim(clientid_t *clid, bool sessions, struct nfsd_net *nn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4891 | { |
Jeff Layton | a52d726 | 2012-03-21 09:52:02 -0400 | [diff] [blame] | 4892 | struct nfs4_client *clp; |
| 4893 | |
| 4894 | /* find clientid in conf_id_hashtbl */ |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 4895 | clp = find_confirmed_client(clid, sessions, nn); |
Jeff Layton | a52d726 | 2012-03-21 09:52:02 -0400 | [diff] [blame] | 4896 | if (clp == NULL) |
| 4897 | return nfserr_reclaim_bad; |
| 4898 | |
| 4899 | return nfsd4_client_record_check(clp) ? nfserr_reclaim_bad : nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4900 | } |
| 4901 | |
Bryan Schumaker | 65178db | 2011-11-01 13:35:21 -0400 | [diff] [blame] | 4902 | #ifdef CONFIG_NFSD_FAULT_INJECTION |
| 4903 | |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 4904 | u64 nfsd_forget_client(struct nfs4_client *clp, u64 max) |
| 4905 | { |
J. Bruce Fields | 221a687 | 2013-04-01 22:23:49 -0400 | [diff] [blame] | 4906 | if (mark_client_expired(clp)) |
| 4907 | return 0; |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 4908 | expire_client(clp); |
| 4909 | return 1; |
| 4910 | } |
| 4911 | |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 4912 | u64 nfsd_print_client(struct nfs4_client *clp, u64 num) |
| 4913 | { |
| 4914 | char buf[INET6_ADDRSTRLEN]; |
Bryan Schumaker | 0a5c33e | 2012-12-07 16:17:28 -0500 | [diff] [blame] | 4915 | rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, sizeof(buf)); |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 4916 | printk(KERN_INFO "NFS Client: %s\n", buf); |
| 4917 | return 1; |
| 4918 | } |
| 4919 | |
| 4920 | static void nfsd_print_count(struct nfs4_client *clp, unsigned int count, |
| 4921 | const char *type) |
| 4922 | { |
| 4923 | char buf[INET6_ADDRSTRLEN]; |
Bryan Schumaker | 0a5c33e | 2012-12-07 16:17:28 -0500 | [diff] [blame] | 4924 | rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, sizeof(buf)); |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 4925 | printk(KERN_INFO "NFS Client: %s has %u %s\n", buf, count, type); |
| 4926 | } |
| 4927 | |
Bryan Schumaker | fc29171 | 2012-11-29 11:40:40 -0500 | [diff] [blame] | 4928 | static u64 nfsd_foreach_client_lock(struct nfs4_client *clp, u64 max, void (*func)(struct nfs4_lockowner *)) |
| 4929 | { |
| 4930 | struct nfs4_openowner *oop; |
| 4931 | struct nfs4_lockowner *lop, *lo_next; |
| 4932 | struct nfs4_ol_stateid *stp, *st_next; |
| 4933 | u64 count = 0; |
| 4934 | |
| 4935 | list_for_each_entry(oop, &clp->cl_openowners, oo_perclient) { |
| 4936 | list_for_each_entry_safe(stp, st_next, &oop->oo_owner.so_stateids, st_perstateowner) { |
| 4937 | list_for_each_entry_safe(lop, lo_next, &stp->st_lockowners, lo_perstateid) { |
| 4938 | if (func) |
| 4939 | func(lop); |
| 4940 | if (++count == max) |
| 4941 | return count; |
| 4942 | } |
| 4943 | } |
| 4944 | } |
| 4945 | |
| 4946 | return count; |
| 4947 | } |
| 4948 | |
| 4949 | u64 nfsd_forget_client_locks(struct nfs4_client *clp, u64 max) |
| 4950 | { |
| 4951 | return nfsd_foreach_client_lock(clp, max, release_lockowner); |
| 4952 | } |
| 4953 | |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 4954 | u64 nfsd_print_client_locks(struct nfs4_client *clp, u64 max) |
| 4955 | { |
| 4956 | u64 count = nfsd_foreach_client_lock(clp, max, NULL); |
| 4957 | nfsd_print_count(clp, count, "locked files"); |
| 4958 | return count; |
| 4959 | } |
| 4960 | |
Bryan Schumaker | 4dbdbda | 2012-11-29 11:40:41 -0500 | [diff] [blame] | 4961 | static u64 nfsd_foreach_client_open(struct nfs4_client *clp, u64 max, void (*func)(struct nfs4_openowner *)) |
| 4962 | { |
| 4963 | struct nfs4_openowner *oop, *next; |
| 4964 | u64 count = 0; |
| 4965 | |
| 4966 | list_for_each_entry_safe(oop, next, &clp->cl_openowners, oo_perclient) { |
| 4967 | if (func) |
| 4968 | func(oop); |
| 4969 | if (++count == max) |
| 4970 | break; |
| 4971 | } |
| 4972 | |
| 4973 | return count; |
| 4974 | } |
| 4975 | |
| 4976 | u64 nfsd_forget_client_openowners(struct nfs4_client *clp, u64 max) |
| 4977 | { |
| 4978 | return nfsd_foreach_client_open(clp, max, release_openowner); |
| 4979 | } |
| 4980 | |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 4981 | u64 nfsd_print_client_openowners(struct nfs4_client *clp, u64 max) |
| 4982 | { |
| 4983 | u64 count = nfsd_foreach_client_open(clp, max, NULL); |
| 4984 | nfsd_print_count(clp, count, "open files"); |
| 4985 | return count; |
| 4986 | } |
| 4987 | |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 4988 | static u64 nfsd_find_all_delegations(struct nfs4_client *clp, u64 max, |
| 4989 | struct list_head *victims) |
| 4990 | { |
| 4991 | struct nfs4_delegation *dp, *next; |
| 4992 | u64 count = 0; |
| 4993 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 4994 | lockdep_assert_held(&state_lock); |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 4995 | list_for_each_entry_safe(dp, next, &clp->cl_delegations, dl_perclnt) { |
| 4996 | if (victims) |
| 4997 | list_move(&dp->dl_recall_lru, victims); |
| 4998 | if (++count == max) |
| 4999 | break; |
| 5000 | } |
| 5001 | return count; |
| 5002 | } |
| 5003 | |
| 5004 | u64 nfsd_forget_client_delegations(struct nfs4_client *clp, u64 max) |
| 5005 | { |
| 5006 | struct nfs4_delegation *dp, *next; |
| 5007 | LIST_HEAD(victims); |
| 5008 | u64 count; |
| 5009 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5010 | spin_lock(&state_lock); |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 5011 | count = nfsd_find_all_delegations(clp, max, &victims); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5012 | spin_unlock(&state_lock); |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 5013 | |
| 5014 | list_for_each_entry_safe(dp, next, &victims, dl_recall_lru) |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 5015 | revoke_delegation(dp); |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 5016 | |
| 5017 | return count; |
| 5018 | } |
| 5019 | |
| 5020 | u64 nfsd_recall_client_delegations(struct nfs4_client *clp, u64 max) |
| 5021 | { |
| 5022 | struct nfs4_delegation *dp, *next; |
| 5023 | LIST_HEAD(victims); |
| 5024 | u64 count; |
| 5025 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5026 | spin_lock(&state_lock); |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 5027 | count = nfsd_find_all_delegations(clp, max, &victims); |
| 5028 | list_for_each_entry_safe(dp, next, &victims, dl_recall_lru) |
| 5029 | nfsd_break_one_deleg(dp); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5030 | spin_unlock(&state_lock); |
Bryan Schumaker | 269de30 | 2012-11-29 11:40:42 -0500 | [diff] [blame] | 5031 | |
| 5032 | return count; |
| 5033 | } |
| 5034 | |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 5035 | u64 nfsd_print_client_delegations(struct nfs4_client *clp, u64 max) |
| 5036 | { |
| 5037 | u64 count = 0; |
| 5038 | |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5039 | spin_lock(&state_lock); |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 5040 | count = nfsd_find_all_delegations(clp, max, NULL); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5041 | spin_unlock(&state_lock); |
Bryan Schumaker | 184c184 | 2012-11-29 11:40:44 -0500 | [diff] [blame] | 5042 | |
| 5043 | nfsd_print_count(clp, count, "delegations"); |
| 5044 | return count; |
| 5045 | } |
| 5046 | |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 5047 | u64 nfsd_for_n_state(u64 max, u64 (*func)(struct nfs4_client *, u64)) |
Bryan Schumaker | 65178db | 2011-11-01 13:35:21 -0400 | [diff] [blame] | 5048 | { |
| 5049 | struct nfs4_client *clp, *next; |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 5050 | u64 count = 0; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 5051 | struct nfsd_net *nn = net_generic(current->nsproxy->net_ns, nfsd_net_id); |
Bryan Schumaker | 65178db | 2011-11-01 13:35:21 -0400 | [diff] [blame] | 5052 | |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 5053 | if (!nfsd_netns_ready(nn)) |
| 5054 | return 0; |
| 5055 | |
Stanislav Kinsbursky | 5ed58bb | 2012-11-14 18:21:56 +0300 | [diff] [blame] | 5056 | list_for_each_entry_safe(clp, next, &nn->client_lru, cl_lru) { |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 5057 | count += func(clp, max - count); |
| 5058 | if ((max != 0) && (count >= max)) |
Bryan Schumaker | 65178db | 2011-11-01 13:35:21 -0400 | [diff] [blame] | 5059 | break; |
| 5060 | } |
Bryan Schumaker | 65178db | 2011-11-01 13:35:21 -0400 | [diff] [blame] | 5061 | |
Bryan Schumaker | 44e34da60 | 2012-11-29 11:40:39 -0500 | [diff] [blame] | 5062 | return count; |
| 5063 | } |
| 5064 | |
Bryan Schumaker | 6c1e82a | 2012-11-29 11:40:46 -0500 | [diff] [blame] | 5065 | struct nfs4_client *nfsd_find_client(struct sockaddr_storage *addr, size_t addr_size) |
| 5066 | { |
| 5067 | struct nfs4_client *clp; |
| 5068 | struct nfsd_net *nn = net_generic(current->nsproxy->net_ns, nfsd_net_id); |
| 5069 | |
| 5070 | if (!nfsd_netns_ready(nn)) |
| 5071 | return NULL; |
| 5072 | |
| 5073 | list_for_each_entry(clp, &nn->client_lru, cl_lru) { |
| 5074 | if (memcmp(&clp->cl_addr, addr, addr_size) == 0) |
| 5075 | return clp; |
| 5076 | } |
| 5077 | return NULL; |
| 5078 | } |
| 5079 | |
Bryan Schumaker | 65178db | 2011-11-01 13:35:21 -0400 | [diff] [blame] | 5080 | #endif /* CONFIG_NFSD_FAULT_INJECTION */ |
| 5081 | |
Meelap Shah | c2f1a55 | 2007-07-17 04:04:39 -0700 | [diff] [blame] | 5082 | /* |
| 5083 | * Since the lifetime of a delegation isn't limited to that of an open, a |
| 5084 | * client may quite reasonably hang on to a delegation as long as it has |
| 5085 | * the inode cached. This becomes an obvious problem the first time a |
| 5086 | * client's inode cache approaches the size of the server's total memory. |
| 5087 | * |
| 5088 | * For now we avoid this problem by imposing a hard limit on the number |
| 5089 | * of delegations, which varies according to the server's memory size. |
| 5090 | */ |
| 5091 | static void |
| 5092 | set_max_delegations(void) |
| 5093 | { |
| 5094 | /* |
| 5095 | * Allow at most 4 delegations per megabyte of RAM. Quick |
| 5096 | * estimates suggest that in the worst case (where every delegation |
| 5097 | * is for a different inode), a delegation could take about 1.5K, |
| 5098 | * giving a worst case usage of about 6% of memory. |
| 5099 | */ |
| 5100 | max_delegations = nr_free_buffer_pages() >> (20 - 2 - PAGE_SHIFT); |
| 5101 | } |
| 5102 | |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5103 | static int nfs4_state_create_net(struct net *net) |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5104 | { |
| 5105 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
| 5106 | int i; |
| 5107 | |
| 5108 | nn->conf_id_hashtbl = kmalloc(sizeof(struct list_head) * |
| 5109 | CLIENT_HASH_SIZE, GFP_KERNEL); |
| 5110 | if (!nn->conf_id_hashtbl) |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 5111 | goto err; |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 5112 | nn->unconf_id_hashtbl = kmalloc(sizeof(struct list_head) * |
| 5113 | CLIENT_HASH_SIZE, GFP_KERNEL); |
| 5114 | if (!nn->unconf_id_hashtbl) |
| 5115 | goto err_unconf_id; |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 5116 | nn->ownerstr_hashtbl = kmalloc(sizeof(struct list_head) * |
| 5117 | OWNER_HASH_SIZE, GFP_KERNEL); |
| 5118 | if (!nn->ownerstr_hashtbl) |
| 5119 | goto err_ownerstr; |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 5120 | nn->lockowner_ino_hashtbl = kmalloc(sizeof(struct list_head) * |
| 5121 | LOCKOWNER_INO_HASH_SIZE, GFP_KERNEL); |
| 5122 | if (!nn->lockowner_ino_hashtbl) |
| 5123 | goto err_lockowner_ino; |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 5124 | nn->sessionid_hashtbl = kmalloc(sizeof(struct list_head) * |
| 5125 | SESSION_HASH_SIZE, GFP_KERNEL); |
| 5126 | if (!nn->sessionid_hashtbl) |
| 5127 | goto err_sessionid; |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5128 | |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 5129 | for (i = 0; i < CLIENT_HASH_SIZE; i++) { |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5130 | INIT_LIST_HEAD(&nn->conf_id_hashtbl[i]); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 5131 | INIT_LIST_HEAD(&nn->unconf_id_hashtbl[i]); |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 5132 | } |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 5133 | for (i = 0; i < OWNER_HASH_SIZE; i++) |
| 5134 | INIT_LIST_HEAD(&nn->ownerstr_hashtbl[i]); |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 5135 | for (i = 0; i < LOCKOWNER_INO_HASH_SIZE; i++) |
| 5136 | INIT_LIST_HEAD(&nn->lockowner_ino_hashtbl[i]); |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 5137 | for (i = 0; i < SESSION_HASH_SIZE; i++) |
| 5138 | INIT_LIST_HEAD(&nn->sessionid_hashtbl[i]); |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 5139 | nn->conf_name_tree = RB_ROOT; |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 5140 | nn->unconf_name_tree = RB_ROOT; |
Stanislav Kinsbursky | 5ed58bb | 2012-11-14 18:21:56 +0300 | [diff] [blame] | 5141 | INIT_LIST_HEAD(&nn->client_lru); |
Stanislav Kinsbursky | 73758fed | 2012-11-14 18:22:01 +0300 | [diff] [blame] | 5142 | INIT_LIST_HEAD(&nn->close_lru); |
J. Bruce Fields | e8c69d1 | 2013-03-21 15:19:33 -0400 | [diff] [blame] | 5143 | INIT_LIST_HEAD(&nn->del_recall_lru); |
Stanislav Kinsbursky | c9a4962 | 2012-11-26 15:21:58 +0300 | [diff] [blame] | 5144 | spin_lock_init(&nn->client_lock); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5145 | |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 5146 | INIT_DELAYED_WORK(&nn->laundromat_work, laundromat_main); |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5147 | get_net(net); |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 5148 | |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5149 | return 0; |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 5150 | |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 5151 | err_sessionid: |
| 5152 | kfree(nn->lockowner_ino_hashtbl); |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 5153 | err_lockowner_ino: |
| 5154 | kfree(nn->ownerstr_hashtbl); |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 5155 | err_ownerstr: |
| 5156 | kfree(nn->unconf_id_hashtbl); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 5157 | err_unconf_id: |
| 5158 | kfree(nn->conf_id_hashtbl); |
Stanislav Kinsbursky | 382a62e | 2012-11-14 18:21:26 +0300 | [diff] [blame] | 5159 | err: |
| 5160 | return -ENOMEM; |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5161 | } |
| 5162 | |
| 5163 | static void |
Stanislav Kinsbursky | 4dce0ac | 2012-11-26 15:22:08 +0300 | [diff] [blame] | 5164 | nfs4_state_destroy_net(struct net *net) |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5165 | { |
| 5166 | int i; |
| 5167 | struct nfs4_client *clp = NULL; |
| 5168 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
| 5169 | |
| 5170 | for (i = 0; i < CLIENT_HASH_SIZE; i++) { |
| 5171 | while (!list_empty(&nn->conf_id_hashtbl[i])) { |
| 5172 | clp = list_entry(nn->conf_id_hashtbl[i].next, struct nfs4_client, cl_idhash); |
| 5173 | destroy_client(clp); |
| 5174 | } |
| 5175 | } |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 5176 | |
Kinglong Mee | 2b90563 | 2014-03-26 22:09:30 +0800 | [diff] [blame] | 5177 | for (i = 0; i < CLIENT_HASH_SIZE; i++) { |
| 5178 | while (!list_empty(&nn->unconf_id_hashtbl[i])) { |
| 5179 | clp = list_entry(nn->unconf_id_hashtbl[i].next, struct nfs4_client, cl_idhash); |
| 5180 | destroy_client(clp); |
| 5181 | } |
Stanislav Kinsbursky | a99454a | 2012-11-14 18:21:36 +0300 | [diff] [blame] | 5182 | } |
| 5183 | |
Stanislav Kinsbursky | 1872de0 | 2012-11-14 18:21:51 +0300 | [diff] [blame] | 5184 | kfree(nn->sessionid_hashtbl); |
Stanislav Kinsbursky | 20e9e2b | 2012-11-14 18:21:46 +0300 | [diff] [blame] | 5185 | kfree(nn->lockowner_ino_hashtbl); |
Stanislav Kinsbursky | 9b53113 | 2012-11-14 18:21:41 +0300 | [diff] [blame] | 5186 | kfree(nn->ownerstr_hashtbl); |
Stanislav Kinsbursky | 0a7ec37 | 2012-11-14 18:21:31 +0300 | [diff] [blame] | 5187 | kfree(nn->unconf_id_hashtbl); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5188 | kfree(nn->conf_id_hashtbl); |
Stanislav Kinsbursky | 4dce0ac | 2012-11-26 15:22:08 +0300 | [diff] [blame] | 5189 | put_net(net); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5190 | } |
| 5191 | |
Stanislav Kinsbursky | f252bc6 | 2012-11-26 15:22:18 +0300 | [diff] [blame] | 5192 | int |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5193 | nfs4_state_start_net(struct net *net) |
NeilBrown | ac4d8ff2 | 2005-06-23 22:03:30 -0700 | [diff] [blame] | 5194 | { |
Stanislav Kinsbursky | 5e1533c | 2012-07-25 16:56:58 +0400 | [diff] [blame] | 5195 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 5196 | int ret; |
| 5197 | |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5198 | ret = nfs4_state_create_net(net); |
Stanislav Kinsbursky | 8daae4d | 2012-11-14 18:21:21 +0300 | [diff] [blame] | 5199 | if (ret) |
| 5200 | return ret; |
Stanislav Kinsbursky | 5e1533c | 2012-07-25 16:56:58 +0400 | [diff] [blame] | 5201 | nfsd4_client_tracking_init(net); |
Stanislav Kinsbursky | 2c142ba | 2012-07-25 16:57:45 +0400 | [diff] [blame] | 5202 | nn->boot_time = get_seconds(); |
Stanislav Kinsbursky | 5ccb006 | 2012-07-25 16:57:22 +0400 | [diff] [blame] | 5203 | locks_start_grace(net, &nn->nfsd4_manager); |
Stanislav Kinsbursky | a51c84e | 2012-07-25 16:57:37 +0400 | [diff] [blame] | 5204 | nn->grace_ended = false; |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5205 | printk(KERN_INFO "NFSD: starting %ld-second grace period (net %p)\n", |
Stanislav Kinsbursky | 5284b44 | 2012-11-27 14:11:49 +0300 | [diff] [blame] | 5206 | nn->nfsd4_grace, net); |
| 5207 | queue_delayed_work(laundry_wq, &nn->laundromat_work, nn->nfsd4_grace * HZ); |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5208 | return 0; |
| 5209 | } |
| 5210 | |
| 5211 | /* initialization to perform when the nfsd service is started: */ |
| 5212 | |
| 5213 | int |
| 5214 | nfs4_state_start(void) |
| 5215 | { |
| 5216 | int ret; |
| 5217 | |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 5218 | ret = set_callback_cred(); |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5219 | if (ret) |
| 5220 | return -ENOMEM; |
NeilBrown | 58da282 | 2005-06-23 22:03:19 -0700 | [diff] [blame] | 5221 | laundry_wq = create_singlethread_workqueue("nfsd4"); |
Jeff Layton | a6d6b78 | 2012-03-05 11:42:36 -0500 | [diff] [blame] | 5222 | if (laundry_wq == NULL) { |
| 5223 | ret = -ENOMEM; |
| 5224 | goto out_recovery; |
| 5225 | } |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 5226 | ret = nfsd4_create_callback_queue(); |
| 5227 | if (ret) |
| 5228 | goto out_free_laundry; |
Stanislav Kinsbursky | 0912128 | 2012-11-14 18:22:17 +0300 | [diff] [blame] | 5229 | |
Meelap Shah | c2f1a55 | 2007-07-17 04:04:39 -0700 | [diff] [blame] | 5230 | set_max_delegations(); |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5231 | |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 5232 | return 0; |
Stanislav Kinsbursky | d85ed44 | 2012-11-26 15:22:13 +0300 | [diff] [blame] | 5233 | |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 5234 | out_free_laundry: |
| 5235 | destroy_workqueue(laundry_wq); |
Jeff Layton | a6d6b78 | 2012-03-05 11:42:36 -0500 | [diff] [blame] | 5236 | out_recovery: |
J. Bruce Fields | b5a1a81 | 2010-03-03 14:52:55 -0500 | [diff] [blame] | 5237 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5238 | } |
| 5239 | |
Stanislav Kinsbursky | f252bc6 | 2012-11-26 15:22:18 +0300 | [diff] [blame] | 5240 | void |
Stanislav Kinsbursky | 4dce0ac | 2012-11-26 15:22:08 +0300 | [diff] [blame] | 5241 | nfs4_state_shutdown_net(struct net *net) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5242 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5243 | struct nfs4_delegation *dp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5244 | struct list_head *pos, *next, reaplist; |
Stanislav Kinsbursky | 4dce0ac | 2012-11-26 15:22:08 +0300 | [diff] [blame] | 5245 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5246 | |
Stanislav Kinsbursky | 4dce0ac | 2012-11-26 15:22:08 +0300 | [diff] [blame] | 5247 | cancel_delayed_work_sync(&nn->laundromat_work); |
| 5248 | locks_end_grace(&nn->nfsd4_manager); |
Jeff Layton | ac55fdc | 2012-11-12 15:00:56 -0500 | [diff] [blame] | 5249 | |
J. Bruce Fields | e50a26d | 2013-10-30 10:33:09 -0400 | [diff] [blame] | 5250 | nfs4_lock_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5251 | INIT_LIST_HEAD(&reaplist); |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5252 | spin_lock(&state_lock); |
J. Bruce Fields | e8c69d1 | 2013-03-21 15:19:33 -0400 | [diff] [blame] | 5253 | list_for_each_safe(pos, next, &nn->del_recall_lru) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5254 | dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru); |
| 5255 | list_move(&dp->dl_recall_lru, &reaplist); |
| 5256 | } |
Benny Halevy | cdc9750 | 2014-05-30 09:09:30 -0400 | [diff] [blame] | 5257 | spin_unlock(&state_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5258 | list_for_each_safe(pos, next, &reaplist) { |
| 5259 | dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru); |
J. Bruce Fields | 3bd64a5 | 2013-04-09 17:02:51 -0400 | [diff] [blame] | 5260 | destroy_delegation(dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5261 | } |
| 5262 | |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 5263 | nfsd4_client_tracking_exit(net); |
Stanislav Kinsbursky | 4dce0ac | 2012-11-26 15:22:08 +0300 | [diff] [blame] | 5264 | nfs4_state_destroy_net(net); |
J. Bruce Fields | e50a26d | 2013-10-30 10:33:09 -0400 | [diff] [blame] | 5265 | nfs4_unlock_state(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5266 | } |
| 5267 | |
| 5268 | void |
| 5269 | nfs4_state_shutdown(void) |
| 5270 | { |
NeilBrown | 5e8d5c2 | 2006-04-10 22:55:37 -0700 | [diff] [blame] | 5271 | destroy_workqueue(laundry_wq); |
J. Bruce Fields | c3935e3 | 2010-06-04 16:42:08 -0400 | [diff] [blame] | 5272 | nfsd4_destroy_callback_queue(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5273 | } |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5274 | |
| 5275 | static void |
| 5276 | get_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid) |
| 5277 | { |
Tigran Mkrtchyan | 37c593c | 2012-02-13 22:55:32 +0100 | [diff] [blame] | 5278 | if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG) && CURRENT_STATEID(stateid)) |
| 5279 | memcpy(stateid, &cstate->current_stateid, sizeof(stateid_t)); |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5280 | } |
| 5281 | |
| 5282 | static void |
| 5283 | put_stateid(struct nfsd4_compound_state *cstate, stateid_t *stateid) |
| 5284 | { |
Tigran Mkrtchyan | 37c593c | 2012-02-13 22:55:32 +0100 | [diff] [blame] | 5285 | if (cstate->minorversion) { |
| 5286 | memcpy(&cstate->current_stateid, stateid, sizeof(stateid_t)); |
| 5287 | SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); |
| 5288 | } |
| 5289 | } |
| 5290 | |
| 5291 | void |
| 5292 | clear_current_stateid(struct nfsd4_compound_state *cstate) |
| 5293 | { |
| 5294 | CLEAR_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5295 | } |
| 5296 | |
Tigran Mkrtchyan | 62cd4a5 | 2012-02-13 22:55:25 +0100 | [diff] [blame] | 5297 | /* |
| 5298 | * functions to set current state id |
| 5299 | */ |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5300 | void |
Tigran Mkrtchyan | 9428fe1 | 2012-02-13 22:55:31 +0100 | [diff] [blame] | 5301 | nfsd4_set_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *odp) |
| 5302 | { |
| 5303 | put_stateid(cstate, &odp->od_stateid); |
| 5304 | } |
| 5305 | |
| 5306 | void |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5307 | nfsd4_set_openstateid(struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
| 5308 | { |
| 5309 | put_stateid(cstate, &open->op_stateid); |
| 5310 | } |
| 5311 | |
| 5312 | void |
Tigran Mkrtchyan | 62cd4a5 | 2012-02-13 22:55:25 +0100 | [diff] [blame] | 5313 | nfsd4_set_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close) |
| 5314 | { |
| 5315 | put_stateid(cstate, &close->cl_stateid); |
| 5316 | } |
| 5317 | |
| 5318 | void |
| 5319 | nfsd4_set_lockstateid(struct nfsd4_compound_state *cstate, struct nfsd4_lock *lock) |
| 5320 | { |
| 5321 | put_stateid(cstate, &lock->lk_resp_stateid); |
| 5322 | } |
| 5323 | |
| 5324 | /* |
| 5325 | * functions to consume current state id |
| 5326 | */ |
Tigran Mkrtchyan | 1e97b51 | 2012-02-13 22:55:30 +0100 | [diff] [blame] | 5327 | |
| 5328 | void |
Tigran Mkrtchyan | 9428fe1 | 2012-02-13 22:55:31 +0100 | [diff] [blame] | 5329 | nfsd4_get_opendowngradestateid(struct nfsd4_compound_state *cstate, struct nfsd4_open_downgrade *odp) |
| 5330 | { |
| 5331 | get_stateid(cstate, &odp->od_stateid); |
| 5332 | } |
| 5333 | |
| 5334 | void |
| 5335 | nfsd4_get_delegreturnstateid(struct nfsd4_compound_state *cstate, struct nfsd4_delegreturn *drp) |
| 5336 | { |
| 5337 | get_stateid(cstate, &drp->dr_stateid); |
| 5338 | } |
| 5339 | |
| 5340 | void |
Tigran Mkrtchyan | 1e97b51 | 2012-02-13 22:55:30 +0100 | [diff] [blame] | 5341 | nfsd4_get_freestateid(struct nfsd4_compound_state *cstate, struct nfsd4_free_stateid *fsp) |
| 5342 | { |
| 5343 | get_stateid(cstate, &fsp->fr_stateid); |
| 5344 | } |
| 5345 | |
| 5346 | void |
| 5347 | nfsd4_get_setattrstateid(struct nfsd4_compound_state *cstate, struct nfsd4_setattr *setattr) |
| 5348 | { |
| 5349 | get_stateid(cstate, &setattr->sa_stateid); |
| 5350 | } |
| 5351 | |
Tigran Mkrtchyan | 62cd4a5 | 2012-02-13 22:55:25 +0100 | [diff] [blame] | 5352 | void |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5353 | nfsd4_get_closestateid(struct nfsd4_compound_state *cstate, struct nfsd4_close *close) |
| 5354 | { |
| 5355 | get_stateid(cstate, &close->cl_stateid); |
| 5356 | } |
| 5357 | |
| 5358 | void |
Tigran Mkrtchyan | 62cd4a5 | 2012-02-13 22:55:25 +0100 | [diff] [blame] | 5359 | nfsd4_get_lockustateid(struct nfsd4_compound_state *cstate, struct nfsd4_locku *locku) |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5360 | { |
Tigran Mkrtchyan | 62cd4a5 | 2012-02-13 22:55:25 +0100 | [diff] [blame] | 5361 | get_stateid(cstate, &locku->lu_stateid); |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 5362 | } |
Tigran Mkrtchyan | 30813e2 | 2012-02-13 22:55:26 +0100 | [diff] [blame] | 5363 | |
| 5364 | void |
| 5365 | nfsd4_get_readstateid(struct nfsd4_compound_state *cstate, struct nfsd4_read *read) |
| 5366 | { |
| 5367 | get_stateid(cstate, &read->rd_stateid); |
| 5368 | } |
| 5369 | |
| 5370 | void |
| 5371 | nfsd4_get_writestateid(struct nfsd4_compound_state *cstate, struct nfsd4_write *write) |
| 5372 | { |
| 5373 | get_stateid(cstate, &write->wr_stateid); |
| 5374 | } |