Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/nfsd/nfs4proc.c |
| 3 | * |
| 4 | * Server-side procedures for NFSv4. |
| 5 | * |
| 6 | * Copyright (c) 2002 The Regents of the University of Michigan. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Kendrick Smith <kmsmith@umich.edu> |
| 10 | * Andy Adamson <andros@umich.edu> |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * |
| 16 | * 1. Redistributions of source code must retain the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer. |
| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer in the |
| 20 | * documentation and/or other materials provided with the distribution. |
| 21 | * 3. Neither the name of the University nor the names of its |
| 22 | * contributors may be used to endorse or promote products derived |
| 23 | * from this software without specific prior written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | */ |
| 37 | |
| 38 | #include <linux/param.h> |
| 39 | #include <linux/major.h> |
| 40 | #include <linux/slab.h> |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 41 | #include <linux/file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #include <linux/sunrpc/svc.h> |
| 44 | #include <linux/nfsd/nfsd.h> |
| 45 | #include <linux/nfsd/cache.h> |
| 46 | #include <linux/nfs4.h> |
| 47 | #include <linux/nfsd/state.h> |
| 48 | #include <linux/nfsd/xdr4.h> |
| 49 | #include <linux/nfs4_acl.h> |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 50 | #include <linux/sunrpc/gss_api.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
| 53 | |
| 54 | static inline void |
| 55 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) |
| 56 | { |
| 57 | fh_put(dst); |
| 58 | dget(src->fh_dentry); |
| 59 | if (src->fh_export) |
| 60 | cache_get(&src->fh_export->h); |
| 61 | *dst = *src; |
| 62 | } |
| 63 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 64 | static __be32 |
J. Bruce Fields | dc730e1 | 2006-10-17 00:10:13 -0700 | [diff] [blame] | 65 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 67 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | if (open->op_truncate && |
| 70 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) |
| 71 | return nfserr_inval; |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 74 | accmode |= NFSD_MAY_READ; |
J. Bruce Fields | 9801d8a | 2006-10-17 00:10:14 -0700 | [diff] [blame] | 75 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 76 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
J. Bruce Fields | 9801d8a | 2006-10-17 00:10:14 -0700 | [diff] [blame] | 77 | if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 78 | accmode |= NFSD_MAY_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); |
| 81 | |
| 82 | return status; |
| 83 | } |
| 84 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 85 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
| 87 | { |
| 88 | struct svc_fh resfh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 89 | __be32 status; |
J. Bruce Fields | 81ac95c | 2006-11-08 17:44:40 -0800 | [diff] [blame] | 90 | int created = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | fh_init(&resfh, NFS4_FHSIZE); |
| 93 | open->op_truncate = 0; |
| 94 | |
| 95 | if (open->op_create) { |
| 96 | /* |
| 97 | * Note: create modes (UNCHECKED,GUARDED...) are the same |
| 98 | * in NFSv4 as in v3. |
| 99 | */ |
| 100 | status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data, |
| 101 | open->op_fname.len, &open->op_iattr, |
| 102 | &resfh, open->op_createmode, |
Jeff Layton | 749997e | 2007-07-31 00:37:51 -0700 | [diff] [blame] | 103 | (u32 *)open->op_verf.data, |
| 104 | &open->op_truncate, &created); |
| 105 | |
J. Bruce Fields | 99f8872 | 2009-02-02 15:12:27 -0500 | [diff] [blame^] | 106 | /* |
| 107 | * Following rfc 3530 14.2.16, use the returned bitmask |
| 108 | * to indicate which attributes we used to store the |
| 109 | * verifier: |
Jeff Layton | 749997e | 2007-07-31 00:37:51 -0700 | [diff] [blame] | 110 | */ |
| 111 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) |
J. Bruce Fields | 99f8872 | 2009-02-02 15:12:27 -0500 | [diff] [blame^] | 112 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
Jeff Layton | 749997e | 2007-07-31 00:37:51 -0700 | [diff] [blame] | 113 | FATTR4_WORD1_TIME_MODIFY); |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 114 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | status = nfsd_lookup(rqstp, current_fh, |
| 116 | open->op_fname.data, open->op_fname.len, &resfh); |
| 117 | fh_unlock(current_fh); |
| 118 | } |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 119 | if (status) |
| 120 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 122 | set_change_info(&open->op_cinfo, current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 124 | /* set reply cache */ |
| 125 | fh_dup2(current_fh, &resfh); |
| 126 | open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size; |
| 127 | memcpy(open->op_stateowner->so_replay.rp_openfh, |
| 128 | &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | |
J. Bruce Fields | 81ac95c | 2006-11-08 17:44:40 -0800 | [diff] [blame] | 130 | if (!created) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 131 | status = do_open_permission(rqstp, current_fh, open, |
| 132 | NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 134 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | fh_put(&resfh); |
| 136 | return status; |
| 137 | } |
| 138 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 139 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
| 141 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 142 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
| 144 | /* Only reclaims from previously confirmed clients are valid */ |
| 145 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) |
| 146 | return status; |
| 147 | |
| 148 | /* We don't know the target directory, and therefore can not |
| 149 | * set the change info |
| 150 | */ |
| 151 | |
| 152 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); |
| 153 | |
| 154 | /* set replay cache */ |
| 155 | open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size; |
| 156 | memcpy(open->op_stateowner->so_replay.rp_openfh, |
| 157 | ¤t_fh->fh_handle.fh_base, |
| 158 | current_fh->fh_handle.fh_size); |
| 159 | |
| 160 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && |
| 161 | (open->op_iattr.ia_size == 0); |
| 162 | |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 163 | status = do_open_permission(rqstp, current_fh, open, |
| 164 | NFSD_MAY_OWNER_OVERRIDE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | return status; |
| 167 | } |
| 168 | |
| 169 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 170 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 171 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 172 | struct nfsd4_open *open) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 174 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
| 176 | (int)open->op_fname.len, open->op_fname.data, |
| 177 | open->op_stateowner); |
| 178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | /* This check required by spec. */ |
| 180 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) |
| 181 | return nfserr_inval; |
| 182 | |
| 183 | nfs4_lock_state(); |
| 184 | |
| 185 | /* check seqid for replay. set nfs4_owner */ |
| 186 | status = nfsd4_process_open1(open); |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 187 | if (status == nfserr_replay_me) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 189 | fh_put(&cstate->current_fh); |
| 190 | cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len; |
| 191 | memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | rp->rp_openfh_len); |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 193 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | if (status) |
| 195 | dprintk("nfsd4_open: replay failed" |
| 196 | " restoring previous filehandle\n"); |
| 197 | else |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 198 | status = nfserr_replay_me; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | if (status) |
| 201 | goto out; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 202 | |
| 203 | /* Openowner is now set, so sequence id will get bumped. Now we need |
| 204 | * these checks before we do any creates: */ |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 205 | status = nfserr_grace; |
J. Bruce Fields | af558e3 | 2007-09-06 12:34:25 -0400 | [diff] [blame] | 206 | if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 207 | goto out; |
| 208 | status = nfserr_no_grace; |
J. Bruce Fields | af558e3 | 2007-09-06 12:34:25 -0400 | [diff] [blame] | 209 | if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 210 | goto out; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | switch (open->op_claim_type) { |
NeilBrown | 0dd3c19 | 2005-06-23 22:02:56 -0700 | [diff] [blame] | 213 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
| 214 | status = nfserr_inval; |
| 215 | if (open->op_create) |
| 216 | goto out; |
| 217 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | case NFS4_OPEN_CLAIM_NULL: |
| 219 | /* |
| 220 | * (1) set CURRENT_FH to the file being opened, |
| 221 | * creating it if necessary, (2) set open->op_cinfo, |
| 222 | * (3) set open->op_truncate if the file is to be |
| 223 | * truncated after opening, (4) do permission checking. |
| 224 | */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 225 | status = do_open_lookup(rqstp, &cstate->current_fh, |
| 226 | open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | if (status) |
| 228 | goto out; |
| 229 | break; |
| 230 | case NFS4_OPEN_CLAIM_PREVIOUS: |
J. Bruce Fields | a525825 | 2006-01-18 17:43:30 -0800 | [diff] [blame] | 231 | open->op_stateowner->so_confirmed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | /* |
| 233 | * The CURRENT_FH is already set to the file being |
| 234 | * opened. (1) set open->op_cinfo, (2) set |
| 235 | * open->op_truncate if the file is to be truncated |
| 236 | * after opening, (3) do permission checking. |
| 237 | */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 238 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
| 239 | open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | if (status) |
| 241 | goto out; |
| 242 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
J. Bruce Fields | a525825 | 2006-01-18 17:43:30 -0800 | [diff] [blame] | 244 | open->op_stateowner->so_confirmed = 1; |
J. Bruce Fields | 2fdada0 | 2007-07-27 16:10:37 -0400 | [diff] [blame] | 245 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | open->op_claim_type); |
| 247 | status = nfserr_notsupp; |
| 248 | goto out; |
| 249 | default: |
J. Bruce Fields | 2fdada0 | 2007-07-27 16:10:37 -0400 | [diff] [blame] | 250 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | open->op_claim_type); |
| 252 | status = nfserr_inval; |
| 253 | goto out; |
| 254 | } |
| 255 | /* |
| 256 | * nfsd4_process_open2() does the actual opening of the file. If |
| 257 | * successful, it (1) truncates the file if open->op_truncate was |
| 258 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. |
| 259 | */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 260 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | out: |
Neil Brown | f2327d9 | 2005-09-13 01:25:37 -0700 | [diff] [blame] | 262 | if (open->op_stateowner) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | nfs4_get_stateowner(open->op_stateowner); |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 264 | cstate->replay_owner = open->op_stateowner; |
Neil Brown | f2327d9 | 2005-09-13 01:25:37 -0700 | [diff] [blame] | 265 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | nfs4_unlock_state(); |
| 267 | return status; |
| 268 | } |
| 269 | |
| 270 | /* |
| 271 | * filehandle-manipulating ops. |
| 272 | */ |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 273 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 274 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 275 | struct svc_fh **getfh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 277 | if (!cstate->current_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | return nfserr_nofilehandle; |
| 279 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 280 | *getfh = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | return nfs_ok; |
| 282 | } |
| 283 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 284 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 285 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 286 | struct nfsd4_putfh *putfh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 288 | fh_put(&cstate->current_fh); |
| 289 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; |
| 290 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, |
| 291 | putfh->pf_fhlen); |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 292 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | } |
| 294 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 295 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 296 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 297 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 299 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 301 | fh_put(&cstate->current_fh); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 302 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | return status; |
| 304 | } |
| 305 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 306 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 307 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 308 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 310 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | return nfserr_restorefh; |
| 312 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 313 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | return nfs_ok; |
| 315 | } |
| 316 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 317 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 318 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 319 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 321 | if (!cstate->current_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | return nfserr_nofilehandle; |
| 323 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 324 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | return nfs_ok; |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * misc nfsv4 ops |
| 330 | */ |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 331 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 332 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 333 | struct nfsd4_access *access) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
| 335 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) |
| 336 | return nfserr_inval; |
| 337 | |
| 338 | access->ac_resp_access = access->ac_req_access; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 339 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
| 340 | &access->ac_supported); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | } |
| 342 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 343 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 344 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 345 | struct nfsd4_commit *commit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 347 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | u32 *p = (u32 *)commit->co_verf.data; |
| 350 | *p++ = nfssvc_boot.tv_sec; |
| 351 | *p++ = nfssvc_boot.tv_usec; |
| 352 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 353 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
| 354 | commit->co_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | if (status == nfserr_symlink) |
| 356 | status = nfserr_inval; |
| 357 | return status; |
| 358 | } |
| 359 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 360 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 361 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 362 | struct nfsd4_create *create) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | { |
| 364 | struct svc_fh resfh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 365 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | dev_t rdev; |
| 367 | |
| 368 | fh_init(&resfh, NFS4_FHSIZE); |
| 369 | |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 370 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
| 371 | NFSD_MAY_CREATE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | if (status == nfserr_symlink) |
| 373 | status = nfserr_notdir; |
| 374 | if (status) |
| 375 | return status; |
| 376 | |
| 377 | switch (create->cr_type) { |
| 378 | case NF4LNK: |
| 379 | /* ugh! we have to null-terminate the linktext, or |
| 380 | * vfs_symlink() will choke. it is always safe to |
| 381 | * null-terminate by brute force, since at worst we |
| 382 | * will overwrite the first byte of the create namelen |
| 383 | * in the XDR buffer, which has already been extracted |
| 384 | * during XDR decode. |
| 385 | */ |
| 386 | create->cr_linkname[create->cr_linklen] = 0; |
| 387 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 388 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
| 389 | create->cr_name, create->cr_namelen, |
| 390 | create->cr_linkname, create->cr_linklen, |
| 391 | &resfh, &create->cr_iattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | break; |
| 393 | |
| 394 | case NF4BLK: |
| 395 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
| 396 | if (MAJOR(rdev) != create->cr_specdata1 || |
| 397 | MINOR(rdev) != create->cr_specdata2) |
| 398 | return nfserr_inval; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 399 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 400 | create->cr_name, create->cr_namelen, |
| 401 | &create->cr_iattr, S_IFBLK, rdev, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | break; |
| 403 | |
| 404 | case NF4CHR: |
| 405 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
| 406 | if (MAJOR(rdev) != create->cr_specdata1 || |
| 407 | MINOR(rdev) != create->cr_specdata2) |
| 408 | return nfserr_inval; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 409 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 410 | create->cr_name, create->cr_namelen, |
| 411 | &create->cr_iattr,S_IFCHR, rdev, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | break; |
| 413 | |
| 414 | case NF4SOCK: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 415 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 416 | create->cr_name, create->cr_namelen, |
| 417 | &create->cr_iattr, S_IFSOCK, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | break; |
| 419 | |
| 420 | case NF4FIFO: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 421 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 422 | create->cr_name, create->cr_namelen, |
| 423 | &create->cr_iattr, S_IFIFO, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | break; |
| 425 | |
| 426 | case NF4DIR: |
| 427 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 428 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 429 | create->cr_name, create->cr_namelen, |
| 430 | &create->cr_iattr, S_IFDIR, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | break; |
| 432 | |
| 433 | default: |
| 434 | status = nfserr_badtype; |
| 435 | } |
| 436 | |
| 437 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 438 | fh_unlock(&cstate->current_fh); |
| 439 | set_change_info(&create->cr_cinfo, &cstate->current_fh); |
| 440 | fh_dup2(&cstate->current_fh, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | fh_put(&resfh); |
| 444 | return status; |
| 445 | } |
| 446 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 447 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 448 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 449 | struct nfsd4_getattr *getattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 451 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 453 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | if (status) |
| 455 | return status; |
| 456 | |
| 457 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) |
| 458 | return nfserr_inval; |
| 459 | |
| 460 | getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; |
| 461 | getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; |
| 462 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 463 | getattr->ga_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | return nfs_ok; |
| 465 | } |
| 466 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 467 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 468 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 469 | struct nfsd4_link *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 471 | __be32 status = nfserr_nofilehandle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 473 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | return status; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 475 | status = nfsd_link(rqstp, &cstate->current_fh, |
| 476 | link->li_name, link->li_namelen, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | if (!status) |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 478 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | return status; |
| 480 | } |
| 481 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 482 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 483 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 484 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | { |
| 486 | struct svc_fh tmp_fh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 487 | __be32 ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | |
| 489 | fh_init(&tmp_fh, NFS4_FHSIZE); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 490 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
| 491 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | return ret; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 493 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | fh_put(&tmp_fh); |
| 495 | return nfserr_noent; |
| 496 | } |
| 497 | fh_put(&tmp_fh); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 498 | return nfsd_lookup(rqstp, &cstate->current_fh, |
| 499 | "..", 2, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 502 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 503 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 504 | struct nfsd4_lookup *lookup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 506 | return nfsd_lookup(rqstp, &cstate->current_fh, |
| 507 | lookup->lo_name, lookup->lo_len, |
| 508 | &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 511 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 512 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 513 | struct nfsd4_read *read) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 515 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | /* no need to check permission - this will be done in nfsd_read() */ |
| 518 | |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 519 | read->rd_filp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | if (read->rd_offset >= OFFSET_MAX) |
| 521 | return nfserr_inval; |
| 522 | |
| 523 | nfs4_lock_state(); |
| 524 | /* check stateid */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 525 | if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
| 526 | &read->rd_stateid, |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 527 | CHECK_FH | RD_STATE, &read->rd_filp))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
| 529 | goto out; |
| 530 | } |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 531 | if (read->rd_filp) |
| 532 | get_file(read->rd_filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | status = nfs_ok; |
| 534 | out: |
| 535 | nfs4_unlock_state(); |
| 536 | read->rd_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 537 | read->rd_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | return status; |
| 539 | } |
| 540 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 541 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 542 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 543 | struct nfsd4_readdir *readdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | { |
| 545 | u64 cookie = readdir->rd_cookie; |
| 546 | static const nfs4_verifier zeroverf; |
| 547 | |
| 548 | /* no need to check permission - this will be done in nfsd_readdir() */ |
| 549 | |
| 550 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) |
| 551 | return nfserr_inval; |
| 552 | |
| 553 | readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; |
| 554 | readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; |
| 555 | |
| 556 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || |
| 557 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
| 558 | return nfserr_bad_cookie; |
| 559 | |
| 560 | readdir->rd_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 561 | readdir->rd_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | return nfs_ok; |
| 563 | } |
| 564 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 565 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 566 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 567 | struct nfsd4_readlink *readlink) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | { |
| 569 | readlink->rl_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 570 | readlink->rl_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | return nfs_ok; |
| 572 | } |
| 573 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 574 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 575 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 576 | struct nfsd4_remove *remove) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 578 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
J. Bruce Fields | af558e3 | 2007-09-06 12:34:25 -0400 | [diff] [blame] | 580 | if (locks_in_grace()) |
NeilBrown | c815afc | 2005-06-23 22:03:00 -0700 | [diff] [blame] | 581 | return nfserr_grace; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 582 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
| 583 | remove->rm_name, remove->rm_namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | if (status == nfserr_symlink) |
| 585 | return nfserr_notdir; |
| 586 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 587 | fh_unlock(&cstate->current_fh); |
| 588 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | } |
| 590 | return status; |
| 591 | } |
| 592 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 593 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 594 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 595 | struct nfsd4_rename *rename) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 597 | __be32 status = nfserr_nofilehandle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 599 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | return status; |
J. Bruce Fields | af558e3 | 2007-09-06 12:34:25 -0400 | [diff] [blame] | 601 | if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
NeilBrown | c815afc | 2005-06-23 22:03:00 -0700 | [diff] [blame] | 602 | & NFSEXP_NOSUBTREECHECK)) |
| 603 | return nfserr_grace; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 604 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
| 605 | rename->rn_snamelen, &cstate->current_fh, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | rename->rn_tname, rename->rn_tnamelen); |
| 607 | |
| 608 | /* the underlying filesystem returns different error's than required |
| 609 | * by NFSv4. both save_fh and current_fh have been verified.. */ |
| 610 | if (status == nfserr_isdir) |
| 611 | status = nfserr_exist; |
| 612 | else if ((status == nfserr_notdir) && |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 613 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
| 614 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | status = nfserr_exist; |
| 616 | else if (status == nfserr_symlink) |
| 617 | status = nfserr_notdir; |
| 618 | |
| 619 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 620 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
| 621 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | } |
| 623 | return status; |
| 624 | } |
| 625 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 626 | static __be32 |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 627 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 628 | struct nfsd4_secinfo *secinfo) |
| 629 | { |
| 630 | struct svc_fh resfh; |
| 631 | struct svc_export *exp; |
| 632 | struct dentry *dentry; |
| 633 | __be32 err; |
| 634 | |
| 635 | fh_init(&resfh, NFS4_FHSIZE); |
| 636 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
| 637 | secinfo->si_name, secinfo->si_namelen, |
| 638 | &exp, &dentry); |
| 639 | if (err) |
| 640 | return err; |
| 641 | if (dentry->d_inode == NULL) { |
| 642 | exp_put(exp); |
| 643 | err = nfserr_noent; |
| 644 | } else |
| 645 | secinfo->si_exp = exp; |
| 646 | dput(dentry); |
| 647 | return err; |
| 648 | } |
| 649 | |
| 650 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 651 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 652 | struct nfsd4_setattr *setattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 654 | __be32 status = nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
| 657 | nfs4_lock_state(); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 658 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 659 | &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | nfs4_unlock_state(); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 661 | if (status) { |
Greg Banks | 3e3b480 | 2006-10-02 02:17:41 -0700 | [diff] [blame] | 662 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 663 | return status; |
| 664 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | } |
Dave Hansen | 18f335a | 2008-02-15 14:37:38 -0800 | [diff] [blame] | 666 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
| 667 | if (status) |
| 668 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | status = nfs_ok; |
| 670 | if (setattr->sa_acl != NULL) |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 671 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
| 672 | setattr->sa_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | if (status) |
Dave Hansen | 18f335a | 2008-02-15 14:37:38 -0800 | [diff] [blame] | 674 | goto out; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 675 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | 0, (time_t)0); |
Dave Hansen | 18f335a | 2008-02-15 14:37:38 -0800 | [diff] [blame] | 677 | out: |
| 678 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | return status; |
| 680 | } |
| 681 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 682 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 683 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 684 | struct nfsd4_write *write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | { |
| 686 | stateid_t *stateid = &write->wr_stateid; |
| 687 | struct file *filp = NULL; |
| 688 | u32 *p; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 689 | __be32 status = nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
| 691 | /* no need to check permission - this will be done in nfsd_write() */ |
| 692 | |
| 693 | if (write->wr_offset >= OFFSET_MAX) |
| 694 | return nfserr_inval; |
| 695 | |
| 696 | nfs4_lock_state(); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 697 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 698 | CHECK_FH | WR_STATE, &filp); |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 699 | if (filp) |
| 700 | get_file(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | nfs4_unlock_state(); |
| 702 | |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 703 | if (status) { |
| 704 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); |
| 705 | return status; |
| 706 | } |
| 707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | write->wr_bytes_written = write->wr_buflen; |
| 709 | write->wr_how_written = write->wr_stable_how; |
| 710 | p = (u32 *)write->wr_verifier.data; |
| 711 | *p++ = nfssvc_boot.tv_sec; |
| 712 | *p++ = nfssvc_boot.tv_usec; |
| 713 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 714 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
| 715 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, |
| 716 | write->wr_buflen, &write->wr_how_written); |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 717 | if (filp) |
| 718 | fput(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
| 720 | if (status == nfserr_symlink) |
| 721 | status = nfserr_inval; |
| 722 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | /* This routine never returns NFS_OK! If there are no other errors, it |
| 726 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the |
| 727 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME |
| 728 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. |
| 729 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 730 | static __be32 |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 731 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 732 | struct nfsd4_verify *verify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 734 | __be32 *buf, *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | int count; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 736 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 738 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | if (status) |
| 740 | return status; |
| 741 | |
| 742 | if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) |
| 743 | || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) |
| 744 | return nfserr_attrnotsupp; |
| 745 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
| 746 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) |
| 747 | return nfserr_inval; |
| 748 | if (verify->ve_attrlen & 3) |
| 749 | return nfserr_inval; |
| 750 | |
| 751 | /* count in words: |
| 752 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 |
| 753 | */ |
| 754 | count = 4 + (verify->ve_attrlen >> 2); |
| 755 | buf = kmalloc(count << 2, GFP_KERNEL); |
| 756 | if (!buf) |
| 757 | return nfserr_resource; |
| 758 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 759 | status = nfsd4_encode_fattr(&cstate->current_fh, |
| 760 | cstate->current_fh.fh_export, |
| 761 | cstate->current_fh.fh_dentry, buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | &count, verify->ve_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 763 | rqstp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
| 765 | /* this means that nfsd4_encode_fattr() ran out of space */ |
| 766 | if (status == nfserr_resource && count == 0) |
| 767 | status = nfserr_not_same; |
| 768 | if (status) |
| 769 | goto out_kfree; |
| 770 | |
| 771 | p = buf + 3; |
| 772 | status = nfserr_not_same; |
| 773 | if (ntohl(*p++) != verify->ve_attrlen) |
| 774 | goto out_kfree; |
| 775 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) |
| 776 | status = nfserr_same; |
| 777 | |
| 778 | out_kfree: |
| 779 | kfree(buf); |
| 780 | return status; |
| 781 | } |
| 782 | |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 783 | static __be32 |
| 784 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 785 | struct nfsd4_verify *verify) |
| 786 | { |
| 787 | __be32 status; |
| 788 | |
| 789 | status = _nfsd4_verify(rqstp, cstate, verify); |
| 790 | return status == nfserr_not_same ? nfs_ok : status; |
| 791 | } |
| 792 | |
| 793 | static __be32 |
| 794 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 795 | struct nfsd4_verify *verify) |
| 796 | { |
| 797 | __be32 status; |
| 798 | |
| 799 | status = _nfsd4_verify(rqstp, cstate, verify); |
| 800 | return status == nfserr_same ? nfs_ok : status; |
| 801 | } |
| 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | /* |
| 804 | * NULL call. |
| 805 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 806 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
| 808 | { |
| 809 | return nfs_ok; |
| 810 | } |
| 811 | |
Shankar Anand | e2b2095 | 2006-07-10 04:45:44 -0700 | [diff] [blame] | 812 | static inline void nfsd4_increment_op_stats(u32 opnum) |
| 813 | { |
| 814 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) |
| 815 | nfsdstats.nfs4_opcount[opnum]++; |
| 816 | } |
| 817 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 818 | static void cstate_free(struct nfsd4_compound_state *cstate) |
| 819 | { |
| 820 | if (cstate == NULL) |
| 821 | return; |
| 822 | fh_put(&cstate->current_fh); |
| 823 | fh_put(&cstate->save_fh); |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 824 | BUG_ON(cstate->replay_owner); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 825 | kfree(cstate); |
| 826 | } |
| 827 | |
| 828 | static struct nfsd4_compound_state *cstate_alloc(void) |
| 829 | { |
| 830 | struct nfsd4_compound_state *cstate; |
| 831 | |
| 832 | cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL); |
| 833 | if (cstate == NULL) |
| 834 | return NULL; |
| 835 | fh_init(&cstate->current_fh, NFS4_FHSIZE); |
| 836 | fh_init(&cstate->save_fh, NFS4_FHSIZE); |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 837 | cstate->replay_owner = NULL; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 838 | return cstate; |
| 839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 841 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
| 842 | void *); |
| 843 | |
| 844 | struct nfsd4_operation { |
| 845 | nfsd4op_func op_func; |
| 846 | u32 op_flags; |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 847 | /* Most ops require a valid current filehandle; a few don't: */ |
| 848 | #define ALLOWED_WITHOUT_FH 1 |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 849 | /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */ |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 850 | #define ALLOWED_ON_ABSENT_FS 2 |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 851 | char *op_name; |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 852 | }; |
| 853 | |
| 854 | static struct nfsd4_operation nfsd4_ops[]; |
| 855 | |
Adrian Bunk | f1c7f79 | 2008-08-08 19:26:42 +0300 | [diff] [blame] | 856 | static const char *nfsd4_op_name(unsigned opnum); |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | /* |
| 859 | * COMPOUND call. |
| 860 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 861 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
| 863 | struct nfsd4_compoundargs *args, |
| 864 | struct nfsd4_compoundres *resp) |
| 865 | { |
| 866 | struct nfsd4_op *op; |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 867 | struct nfsd4_operation *opdesc; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 868 | struct nfsd4_compound_state *cstate = NULL; |
J.Bruce Fields | e571019 | 2006-12-13 00:35:20 -0800 | [diff] [blame] | 869 | int slack_bytes; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 870 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | resp->xbuf = &rqstp->rq_res; |
| 873 | resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; |
| 874 | resp->tagp = resp->p; |
| 875 | /* reserve space for: taglen, tag, and opcnt */ |
| 876 | resp->p += 2 + XDR_QUADLEN(args->taglen); |
| 877 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; |
| 878 | resp->taglen = args->taglen; |
| 879 | resp->tag = args->tag; |
| 880 | resp->opcnt = 0; |
| 881 | resp->rqstp = rqstp; |
| 882 | |
| 883 | /* |
| 884 | * According to RFC3010, this takes precedence over all other errors. |
| 885 | */ |
| 886 | status = nfserr_minor_vers_mismatch; |
| 887 | if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
| 888 | goto out; |
| 889 | |
Andy Adamson | c228c24 | 2008-08-21 08:42:16 -0400 | [diff] [blame] | 890 | status = nfserr_resource; |
| 891 | cstate = cstate_alloc(); |
| 892 | if (cstate == NULL) |
| 893 | goto out; |
| 894 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | status = nfs_ok; |
| 896 | while (!status && resp->opcnt < args->opcnt) { |
| 897 | op = &args->ops[resp->opcnt++]; |
| 898 | |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 899 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
| 900 | resp->opcnt, args->opcnt, op->opnum, |
| 901 | nfsd4_op_name(op->opnum)); |
J. Bruce Fields | fd44527 | 2006-01-18 17:43:23 -0800 | [diff] [blame] | 902 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | /* |
| 904 | * The XDR decode routines may have pre-set op->status; |
| 905 | * for example, if there is a miscellaneous XDR error |
| 906 | * it will be set to nfserr_bad_xdr. |
| 907 | */ |
| 908 | if (op->status) |
| 909 | goto encode_op; |
| 910 | |
| 911 | /* We must be able to encode a successful response to |
| 912 | * this operation, with enough room left over to encode a |
| 913 | * failed response to the next operation. If we don't |
| 914 | * have enough room, fail with ERR_RESOURCE. |
| 915 | */ |
J.Bruce Fields | e571019 | 2006-12-13 00:35:20 -0800 | [diff] [blame] | 916 | slack_bytes = (char *)resp->end - (char *)resp->p; |
| 917 | if (slack_bytes < COMPOUND_SLACK_SPACE |
| 918 | + COMPOUND_ERR_SLACK_SPACE) { |
| 919 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | op->status = nfserr_resource; |
| 921 | goto encode_op; |
| 922 | } |
| 923 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 924 | opdesc = &nfsd4_ops[op->opnum]; |
| 925 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 926 | if (!cstate->current_fh.fh_dentry) { |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 927 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 928 | op->status = nfserr_nofilehandle; |
| 929 | goto encode_op; |
| 930 | } |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 931 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
| 932 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 933 | op->status = nfserr_moved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | goto encode_op; |
| 935 | } |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 936 | |
| 937 | if (opdesc->op_func) |
| 938 | op->status = opdesc->op_func(rqstp, cstate, &op->u); |
| 939 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | BUG_ON(op->status == nfs_ok); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
| 942 | encode_op: |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 943 | if (op->status == nfserr_replay_me) { |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 944 | op->replay = &cstate->replay_owner->so_replay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | nfsd4_encode_replay(resp, op); |
| 946 | status = op->status = op->replay->rp_status; |
| 947 | } else { |
| 948 | nfsd4_encode_operation(resp, op); |
| 949 | status = op->status; |
| 950 | } |
Benny Halevy | 0407717 | 2008-12-15 19:40:49 +0200 | [diff] [blame] | 951 | |
| 952 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", |
| 953 | args->ops, args->opcnt, resp->opcnt, op->opnum, |
| 954 | be32_to_cpu(status)); |
| 955 | |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 956 | if (cstate->replay_owner) { |
| 957 | nfs4_put_stateowner(cstate->replay_owner); |
| 958 | cstate->replay_owner = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 960 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
| 961 | if (op->opnum == OP_READ && op->u.read.rd_filp) |
| 962 | fput(op->u.read.rd_filp); |
Shankar Anand | e2b2095 | 2006-07-10 04:45:44 -0700 | [diff] [blame] | 963 | |
| 964 | nfsd4_increment_op_stats(op->opnum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | } |
| 966 | |
Andy Adamson | c228c24 | 2008-08-21 08:42:16 -0400 | [diff] [blame] | 967 | cstate_free(cstate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | out: |
| 969 | nfsd4_release_compoundargs(args); |
J. Bruce Fields | 3b12cd9 | 2008-05-05 17:17:44 -0400 | [diff] [blame] | 970 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | return status; |
| 972 | } |
| 973 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 974 | static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = { |
| 975 | [OP_ACCESS] = { |
| 976 | .op_func = (nfsd4op_func)nfsd4_access, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 977 | .op_name = "OP_ACCESS", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 978 | }, |
| 979 | [OP_CLOSE] = { |
| 980 | .op_func = (nfsd4op_func)nfsd4_close, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 981 | .op_name = "OP_CLOSE", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 982 | }, |
| 983 | [OP_COMMIT] = { |
| 984 | .op_func = (nfsd4op_func)nfsd4_commit, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 985 | .op_name = "OP_COMMIT", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 986 | }, |
| 987 | [OP_CREATE] = { |
| 988 | .op_func = (nfsd4op_func)nfsd4_create, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 989 | .op_name = "OP_CREATE", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 990 | }, |
| 991 | [OP_DELEGRETURN] = { |
| 992 | .op_func = (nfsd4op_func)nfsd4_delegreturn, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 993 | .op_name = "OP_DELEGRETURN", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 994 | }, |
| 995 | [OP_GETATTR] = { |
| 996 | .op_func = (nfsd4op_func)nfsd4_getattr, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 997 | .op_flags = ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 998 | .op_name = "OP_GETATTR", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 999 | }, |
| 1000 | [OP_GETFH] = { |
| 1001 | .op_func = (nfsd4op_func)nfsd4_getfh, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1002 | .op_name = "OP_GETFH", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1003 | }, |
| 1004 | [OP_LINK] = { |
| 1005 | .op_func = (nfsd4op_func)nfsd4_link, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1006 | .op_name = "OP_LINK", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1007 | }, |
| 1008 | [OP_LOCK] = { |
| 1009 | .op_func = (nfsd4op_func)nfsd4_lock, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1010 | .op_name = "OP_LOCK", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1011 | }, |
| 1012 | [OP_LOCKT] = { |
| 1013 | .op_func = (nfsd4op_func)nfsd4_lockt, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1014 | .op_name = "OP_LOCKT", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1015 | }, |
| 1016 | [OP_LOCKU] = { |
| 1017 | .op_func = (nfsd4op_func)nfsd4_locku, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1018 | .op_name = "OP_LOCKU", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1019 | }, |
| 1020 | [OP_LOOKUP] = { |
| 1021 | .op_func = (nfsd4op_func)nfsd4_lookup, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1022 | .op_name = "OP_LOOKUP", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1023 | }, |
| 1024 | [OP_LOOKUPP] = { |
| 1025 | .op_func = (nfsd4op_func)nfsd4_lookupp, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1026 | .op_name = "OP_LOOKUPP", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1027 | }, |
| 1028 | [OP_NVERIFY] = { |
| 1029 | .op_func = (nfsd4op_func)nfsd4_nverify, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1030 | .op_name = "OP_NVERIFY", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1031 | }, |
| 1032 | [OP_OPEN] = { |
| 1033 | .op_func = (nfsd4op_func)nfsd4_open, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1034 | .op_name = "OP_OPEN", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1035 | }, |
| 1036 | [OP_OPEN_CONFIRM] = { |
| 1037 | .op_func = (nfsd4op_func)nfsd4_open_confirm, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1038 | .op_name = "OP_OPEN_CONFIRM", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1039 | }, |
| 1040 | [OP_OPEN_DOWNGRADE] = { |
| 1041 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1042 | .op_name = "OP_OPEN_DOWNGRADE", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1043 | }, |
| 1044 | [OP_PUTFH] = { |
| 1045 | .op_func = (nfsd4op_func)nfsd4_putfh, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1046 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1047 | .op_name = "OP_PUTFH", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1048 | }, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 1049 | [OP_PUTPUBFH] = { |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1050 | /* unsupported, just for future reference: */ |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1051 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1052 | .op_name = "OP_PUTPUBFH", |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 1053 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1054 | [OP_PUTROOTFH] = { |
| 1055 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1056 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1057 | .op_name = "OP_PUTROOTFH", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1058 | }, |
| 1059 | [OP_READ] = { |
| 1060 | .op_func = (nfsd4op_func)nfsd4_read, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1061 | .op_name = "OP_READ", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1062 | }, |
| 1063 | [OP_READDIR] = { |
| 1064 | .op_func = (nfsd4op_func)nfsd4_readdir, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1065 | .op_name = "OP_READDIR", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1066 | }, |
| 1067 | [OP_READLINK] = { |
| 1068 | .op_func = (nfsd4op_func)nfsd4_readlink, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1069 | .op_name = "OP_READLINK", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1070 | }, |
| 1071 | [OP_REMOVE] = { |
| 1072 | .op_func = (nfsd4op_func)nfsd4_remove, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1073 | .op_name = "OP_REMOVE", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1074 | }, |
| 1075 | [OP_RENAME] = { |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1076 | .op_name = "OP_RENAME", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1077 | .op_func = (nfsd4op_func)nfsd4_rename, |
| 1078 | }, |
| 1079 | [OP_RENEW] = { |
| 1080 | .op_func = (nfsd4op_func)nfsd4_renew, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1081 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1082 | .op_name = "OP_RENEW", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1083 | }, |
| 1084 | [OP_RESTOREFH] = { |
| 1085 | .op_func = (nfsd4op_func)nfsd4_restorefh, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1086 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1087 | .op_name = "OP_RESTOREFH", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1088 | }, |
| 1089 | [OP_SAVEFH] = { |
| 1090 | .op_func = (nfsd4op_func)nfsd4_savefh, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1091 | .op_name = "OP_SAVEFH", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1092 | }, |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 1093 | [OP_SECINFO] = { |
| 1094 | .op_func = (nfsd4op_func)nfsd4_secinfo, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1095 | .op_name = "OP_SECINFO", |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 1096 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1097 | [OP_SETATTR] = { |
| 1098 | .op_func = (nfsd4op_func)nfsd4_setattr, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1099 | .op_name = "OP_SETATTR", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1100 | }, |
| 1101 | [OP_SETCLIENTID] = { |
| 1102 | .op_func = (nfsd4op_func)nfsd4_setclientid, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1103 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1104 | .op_name = "OP_SETCLIENTID", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1105 | }, |
| 1106 | [OP_SETCLIENTID_CONFIRM] = { |
| 1107 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1108 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1109 | .op_name = "OP_SETCLIENTID_CONFIRM", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1110 | }, |
| 1111 | [OP_VERIFY] = { |
| 1112 | .op_func = (nfsd4op_func)nfsd4_verify, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1113 | .op_name = "OP_VERIFY", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1114 | }, |
| 1115 | [OP_WRITE] = { |
| 1116 | .op_func = (nfsd4op_func)nfsd4_write, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1117 | .op_name = "OP_WRITE", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1118 | }, |
| 1119 | [OP_RELEASE_LOCKOWNER] = { |
| 1120 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1121 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1122 | .op_name = "OP_RELEASE_LOCKOWNER", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1123 | }, |
| 1124 | }; |
| 1125 | |
Adrian Bunk | f1c7f79 | 2008-08-08 19:26:42 +0300 | [diff] [blame] | 1126 | static const char *nfsd4_op_name(unsigned opnum) |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1127 | { |
| 1128 | if (opnum < ARRAY_SIZE(nfsd4_ops)) |
| 1129 | return nfsd4_ops[opnum].op_name; |
| 1130 | return "unknown_operation"; |
| 1131 | } |
| 1132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | #define nfs4svc_decode_voidargs NULL |
| 1134 | #define nfs4svc_release_void NULL |
| 1135 | #define nfsd4_voidres nfsd4_voidargs |
| 1136 | #define nfs4svc_release_compound NULL |
| 1137 | struct nfsd4_voidargs { int dummy; }; |
| 1138 | |
| 1139 | #define PROC(name, argt, rest, relt, cache, respsize) \ |
| 1140 | { (svc_procfunc) nfsd4_proc_##name, \ |
| 1141 | (kxdrproc_t) nfs4svc_decode_##argt##args, \ |
| 1142 | (kxdrproc_t) nfs4svc_encode_##rest##res, \ |
| 1143 | (kxdrproc_t) nfs4svc_release_##relt, \ |
| 1144 | sizeof(struct nfsd4_##argt##args), \ |
| 1145 | sizeof(struct nfsd4_##rest##res), \ |
| 1146 | 0, \ |
| 1147 | cache, \ |
| 1148 | respsize, \ |
| 1149 | } |
| 1150 | |
| 1151 | /* |
| 1152 | * TODO: At the present time, the NFSv4 server does not do XID caching |
| 1153 | * of requests. Implementing XID caching would not be a serious problem, |
| 1154 | * although it would require a mild change in interfaces since one |
| 1155 | * doesn't know whether an NFSv4 request is idempotent until after the |
| 1156 | * XDR decode. However, XID caching totally confuses pynfs (Peter |
| 1157 | * Astrand's regression testsuite for NFSv4 servers), which reuses |
| 1158 | * XID's liberally, so I've left it unimplemented until pynfs generates |
| 1159 | * better XID's. |
| 1160 | */ |
| 1161 | static struct svc_procedure nfsd_procedures4[2] = { |
| 1162 | PROC(null, void, void, void, RC_NOCACHE, 1), |
NeilBrown | 7775f4c | 2006-04-10 22:55:20 -0700 | [diff] [blame] | 1163 | PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | }; |
| 1165 | |
| 1166 | struct svc_version nfsd_version4 = { |
| 1167 | .vs_vers = 4, |
| 1168 | .vs_nproc = 2, |
| 1169 | .vs_proc = nfsd_procedures4, |
| 1170 | .vs_dispatch = nfsd_dispatch, |
| 1171 | .vs_xdrsize = NFS4_SVC_XDRSIZE, |
| 1172 | }; |
| 1173 | |
| 1174 | /* |
| 1175 | * Local variables: |
| 1176 | * c-basic-offset: 8 |
| 1177 | * End: |
| 1178 | */ |