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 | dcb488a | 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) |
J. Bruce Fields | dc730e1 | 2006-10-17 00:10:13 -0700 | [diff] [blame] | 74 | accmode |= 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) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | accmode |= (MAY_WRITE | 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) |
| 78 | accmode |= 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 | |
| 106 | /* If we ever decide to use different attrs to store the |
| 107 | * verifier in nfsd_create_v3, then we'll need to change this |
| 108 | */ |
| 109 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) |
| 110 | open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS | |
| 111 | FATTR4_WORD1_TIME_MODIFY); |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 112 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | status = nfsd_lookup(rqstp, current_fh, |
| 114 | open->op_fname.data, open->op_fname.len, &resfh); |
| 115 | fh_unlock(current_fh); |
| 116 | } |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 117 | if (status) |
| 118 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 120 | set_change_info(&open->op_cinfo, current_fh); |
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 reply cache */ |
| 123 | fh_dup2(current_fh, &resfh); |
| 124 | open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size; |
| 125 | memcpy(open->op_stateowner->so_replay.rp_openfh, |
| 126 | &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
J. Bruce Fields | 81ac95c | 2006-11-08 17:44:40 -0800 | [diff] [blame] | 128 | if (!created) |
| 129 | status = do_open_permission(rqstp, current_fh, open, MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 131 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | fh_put(&resfh); |
| 133 | return status; |
| 134 | } |
| 135 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 136 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
| 138 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 139 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
| 141 | /* Only reclaims from previously confirmed clients are valid */ |
| 142 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) |
| 143 | return status; |
| 144 | |
| 145 | /* We don't know the target directory, and therefore can not |
| 146 | * set the change info |
| 147 | */ |
| 148 | |
| 149 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); |
| 150 | |
| 151 | /* set replay cache */ |
| 152 | open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size; |
| 153 | memcpy(open->op_stateowner->so_replay.rp_openfh, |
| 154 | ¤t_fh->fh_handle.fh_base, |
| 155 | current_fh->fh_handle.fh_size); |
| 156 | |
| 157 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && |
| 158 | (open->op_iattr.ia_size == 0); |
| 159 | |
J. Bruce Fields | dc730e1 | 2006-10-17 00:10:13 -0700 | [diff] [blame] | 160 | status = do_open_permission(rqstp, current_fh, open, MAY_OWNER_OVERRIDE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
| 162 | return status; |
| 163 | } |
| 164 | |
| 165 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 166 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 167 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 168 | struct nfsd4_open *open) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 170 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
| 172 | (int)open->op_fname.len, open->op_fname.data, |
| 173 | open->op_stateowner); |
| 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | /* This check required by spec. */ |
| 176 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) |
| 177 | return nfserr_inval; |
| 178 | |
| 179 | nfs4_lock_state(); |
| 180 | |
| 181 | /* check seqid for replay. set nfs4_owner */ |
| 182 | status = nfsd4_process_open1(open); |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 183 | if (status == nfserr_replay_me) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 185 | fh_put(&cstate->current_fh); |
| 186 | cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len; |
| 187 | memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | rp->rp_openfh_len); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 189 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | if (status) |
| 191 | dprintk("nfsd4_open: replay failed" |
| 192 | " restoring previous filehandle\n"); |
| 193 | else |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 194 | status = nfserr_replay_me; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | } |
| 196 | if (status) |
| 197 | goto out; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 198 | |
| 199 | /* Openowner is now set, so sequence id will get bumped. Now we need |
| 200 | * these checks before we do any creates: */ |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 201 | status = nfserr_grace; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 202 | if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 203 | goto out; |
| 204 | status = nfserr_no_grace; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 205 | if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 206 | goto out; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | switch (open->op_claim_type) { |
NeilBrown | 0dd3c19 | 2005-06-23 22:02:56 -0700 | [diff] [blame] | 209 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
| 210 | status = nfserr_inval; |
| 211 | if (open->op_create) |
| 212 | goto out; |
| 213 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | case NFS4_OPEN_CLAIM_NULL: |
| 215 | /* |
| 216 | * (1) set CURRENT_FH to the file being opened, |
| 217 | * creating it if necessary, (2) set open->op_cinfo, |
| 218 | * (3) set open->op_truncate if the file is to be |
| 219 | * truncated after opening, (4) do permission checking. |
| 220 | */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 221 | status = do_open_lookup(rqstp, &cstate->current_fh, |
| 222 | open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | if (status) |
| 224 | goto out; |
| 225 | break; |
| 226 | case NFS4_OPEN_CLAIM_PREVIOUS: |
J. Bruce Fields | a525825 | 2006-01-18 17:43:30 -0800 | [diff] [blame] | 227 | open->op_stateowner->so_confirmed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | /* |
| 229 | * The CURRENT_FH is already set to the file being |
| 230 | * opened. (1) set open->op_cinfo, (2) set |
| 231 | * open->op_truncate if the file is to be truncated |
| 232 | * after opening, (3) do permission checking. |
| 233 | */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 234 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
| 235 | open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (status) |
| 237 | goto out; |
| 238 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
J. Bruce Fields | a525825 | 2006-01-18 17:43:30 -0800 | [diff] [blame] | 240 | open->op_stateowner->so_confirmed = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | printk("NFSD: unsupported OPEN claim type %d\n", |
| 242 | open->op_claim_type); |
| 243 | status = nfserr_notsupp; |
| 244 | goto out; |
| 245 | default: |
| 246 | printk("NFSD: Invalid OPEN claim type %d\n", |
| 247 | open->op_claim_type); |
| 248 | status = nfserr_inval; |
| 249 | goto out; |
| 250 | } |
| 251 | /* |
| 252 | * nfsd4_process_open2() does the actual opening of the file. If |
| 253 | * successful, it (1) truncates the file if open->op_truncate was |
| 254 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. |
| 255 | */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 256 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | out: |
Neil Brown | f2327d9 | 2005-09-13 01:25:37 -0700 | [diff] [blame] | 258 | if (open->op_stateowner) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | nfs4_get_stateowner(open->op_stateowner); |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 260 | cstate->replay_owner = open->op_stateowner; |
Neil Brown | f2327d9 | 2005-09-13 01:25:37 -0700 | [diff] [blame] | 261 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | nfs4_unlock_state(); |
| 263 | return status; |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * filehandle-manipulating ops. |
| 268 | */ |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 269 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 270 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 271 | struct svc_fh **getfh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 273 | if (!cstate->current_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | return nfserr_nofilehandle; |
| 275 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 276 | *getfh = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | return nfs_ok; |
| 278 | } |
| 279 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 280 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 281 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 282 | struct nfsd4_putfh *putfh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 284 | fh_put(&cstate->current_fh); |
| 285 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; |
| 286 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, |
| 287 | putfh->pf_fhlen); |
| 288 | return fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | } |
| 290 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 291 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 292 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 293 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 295 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 297 | fh_put(&cstate->current_fh); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 298 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | return status; |
| 300 | } |
| 301 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 302 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 303 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 304 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 306 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | return nfserr_restorefh; |
| 308 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 309 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | return nfs_ok; |
| 311 | } |
| 312 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 313 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 314 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 315 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 317 | if (!cstate->current_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return nfserr_nofilehandle; |
| 319 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 320 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | return nfs_ok; |
| 322 | } |
| 323 | |
| 324 | /* |
| 325 | * misc nfsv4 ops |
| 326 | */ |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 327 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 328 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 329 | struct nfsd4_access *access) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | { |
| 331 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) |
| 332 | return nfserr_inval; |
| 333 | |
| 334 | access->ac_resp_access = access->ac_req_access; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 335 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
| 336 | &access->ac_supported); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
| 338 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 339 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 340 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 341 | struct nfsd4_commit *commit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 343 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | u32 *p = (u32 *)commit->co_verf.data; |
| 346 | *p++ = nfssvc_boot.tv_sec; |
| 347 | *p++ = nfssvc_boot.tv_usec; |
| 348 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 349 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
| 350 | commit->co_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | if (status == nfserr_symlink) |
| 352 | status = nfserr_inval; |
| 353 | return status; |
| 354 | } |
| 355 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 356 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 357 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 358 | struct nfsd4_create *create) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
| 360 | struct svc_fh resfh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 361 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | dev_t rdev; |
| 363 | |
| 364 | fh_init(&resfh, NFS4_FHSIZE); |
| 365 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 366 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, MAY_CREATE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | if (status == nfserr_symlink) |
| 368 | status = nfserr_notdir; |
| 369 | if (status) |
| 370 | return status; |
| 371 | |
| 372 | switch (create->cr_type) { |
| 373 | case NF4LNK: |
| 374 | /* ugh! we have to null-terminate the linktext, or |
| 375 | * vfs_symlink() will choke. it is always safe to |
| 376 | * null-terminate by brute force, since at worst we |
| 377 | * will overwrite the first byte of the create namelen |
| 378 | * in the XDR buffer, which has already been extracted |
| 379 | * during XDR decode. |
| 380 | */ |
| 381 | create->cr_linkname[create->cr_linklen] = 0; |
| 382 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 383 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
| 384 | create->cr_name, create->cr_namelen, |
| 385 | create->cr_linkname, create->cr_linklen, |
| 386 | &resfh, &create->cr_iattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | break; |
| 388 | |
| 389 | case NF4BLK: |
| 390 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
| 391 | if (MAJOR(rdev) != create->cr_specdata1 || |
| 392 | MINOR(rdev) != create->cr_specdata2) |
| 393 | return nfserr_inval; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 394 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 395 | create->cr_name, create->cr_namelen, |
| 396 | &create->cr_iattr, S_IFBLK, rdev, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | break; |
| 398 | |
| 399 | case NF4CHR: |
| 400 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
| 401 | if (MAJOR(rdev) != create->cr_specdata1 || |
| 402 | MINOR(rdev) != create->cr_specdata2) |
| 403 | return nfserr_inval; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 404 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 405 | create->cr_name, create->cr_namelen, |
| 406 | &create->cr_iattr,S_IFCHR, rdev, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | break; |
| 408 | |
| 409 | case NF4SOCK: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 410 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 411 | create->cr_name, create->cr_namelen, |
| 412 | &create->cr_iattr, S_IFSOCK, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | break; |
| 414 | |
| 415 | case NF4FIFO: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 416 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 417 | create->cr_name, create->cr_namelen, |
| 418 | &create->cr_iattr, S_IFIFO, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | break; |
| 420 | |
| 421 | case NF4DIR: |
| 422 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 423 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 424 | create->cr_name, create->cr_namelen, |
| 425 | &create->cr_iattr, S_IFDIR, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | break; |
| 427 | |
| 428 | default: |
| 429 | status = nfserr_badtype; |
| 430 | } |
| 431 | |
| 432 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 433 | fh_unlock(&cstate->current_fh); |
| 434 | set_change_info(&create->cr_cinfo, &cstate->current_fh); |
| 435 | fh_dup2(&cstate->current_fh, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | fh_put(&resfh); |
| 439 | return status; |
| 440 | } |
| 441 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 442 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 443 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 444 | struct nfsd4_getattr *getattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 446 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 448 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | if (status) |
| 450 | return status; |
| 451 | |
| 452 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) |
| 453 | return nfserr_inval; |
| 454 | |
| 455 | getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; |
| 456 | getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; |
| 457 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 458 | getattr->ga_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | return nfs_ok; |
| 460 | } |
| 461 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 462 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 463 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 464 | struct nfsd4_link *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 466 | __be32 status = nfserr_nofilehandle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 468 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | return status; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 470 | status = nfsd_link(rqstp, &cstate->current_fh, |
| 471 | link->li_name, link->li_namelen, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | if (!status) |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 473 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | return status; |
| 475 | } |
| 476 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 477 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 478 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 479 | void *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | { |
| 481 | struct svc_fh tmp_fh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 482 | __be32 ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
| 484 | fh_init(&tmp_fh, NFS4_FHSIZE); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 485 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
| 486 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | return ret; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 488 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | fh_put(&tmp_fh); |
| 490 | return nfserr_noent; |
| 491 | } |
| 492 | fh_put(&tmp_fh); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 493 | return nfsd_lookup(rqstp, &cstate->current_fh, |
| 494 | "..", 2, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | } |
| 496 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 497 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 498 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 499 | struct nfsd4_lookup *lookup) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 501 | return nfsd_lookup(rqstp, &cstate->current_fh, |
| 502 | lookup->lo_name, lookup->lo_len, |
| 503 | &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 506 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 507 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 508 | struct nfsd4_read *read) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 510 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
| 512 | /* no need to check permission - this will be done in nfsd_read() */ |
| 513 | |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 514 | read->rd_filp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | if (read->rd_offset >= OFFSET_MAX) |
| 516 | return nfserr_inval; |
| 517 | |
| 518 | nfs4_lock_state(); |
| 519 | /* check stateid */ |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 520 | if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
| 521 | &read->rd_stateid, |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 522 | CHECK_FH | RD_STATE, &read->rd_filp))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
| 524 | goto out; |
| 525 | } |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 526 | if (read->rd_filp) |
| 527 | get_file(read->rd_filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | status = nfs_ok; |
| 529 | out: |
| 530 | nfs4_unlock_state(); |
| 531 | read->rd_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 532 | read->rd_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | return status; |
| 534 | } |
| 535 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 536 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 537 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 538 | struct nfsd4_readdir *readdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | { |
| 540 | u64 cookie = readdir->rd_cookie; |
| 541 | static const nfs4_verifier zeroverf; |
| 542 | |
| 543 | /* no need to check permission - this will be done in nfsd_readdir() */ |
| 544 | |
| 545 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) |
| 546 | return nfserr_inval; |
| 547 | |
| 548 | readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; |
| 549 | readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; |
| 550 | |
| 551 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || |
| 552 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
| 553 | return nfserr_bad_cookie; |
| 554 | |
| 555 | readdir->rd_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 556 | readdir->rd_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return nfs_ok; |
| 558 | } |
| 559 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 560 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 561 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 562 | struct nfsd4_readlink *readlink) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | { |
| 564 | readlink->rl_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 565 | readlink->rl_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | return nfs_ok; |
| 567 | } |
| 568 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 569 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 570 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 571 | struct nfsd4_remove *remove) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 573 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
NeilBrown | c815afc | 2005-06-23 22:03:00 -0700 | [diff] [blame] | 575 | if (nfs4_in_grace()) |
| 576 | return nfserr_grace; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 577 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
| 578 | remove->rm_name, remove->rm_namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | if (status == nfserr_symlink) |
| 580 | return nfserr_notdir; |
| 581 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 582 | fh_unlock(&cstate->current_fh); |
| 583 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | } |
| 585 | return status; |
| 586 | } |
| 587 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 588 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 589 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 590 | struct nfsd4_rename *rename) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 592 | __be32 status = nfserr_nofilehandle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 594 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | return status; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 596 | if (nfs4_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
NeilBrown | c815afc | 2005-06-23 22:03:00 -0700 | [diff] [blame] | 597 | & NFSEXP_NOSUBTREECHECK)) |
| 598 | return nfserr_grace; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 599 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
| 600 | rename->rn_snamelen, &cstate->current_fh, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | rename->rn_tname, rename->rn_tnamelen); |
| 602 | |
| 603 | /* the underlying filesystem returns different error's than required |
| 604 | * by NFSv4. both save_fh and current_fh have been verified.. */ |
| 605 | if (status == nfserr_isdir) |
| 606 | status = nfserr_exist; |
| 607 | else if ((status == nfserr_notdir) && |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 608 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
| 609 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | status = nfserr_exist; |
| 611 | else if (status == nfserr_symlink) |
| 612 | status = nfserr_notdir; |
| 613 | |
| 614 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 615 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
| 616 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | } |
| 618 | return status; |
| 619 | } |
| 620 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 621 | static __be32 |
Andy Adamson | dcb488a | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 622 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 623 | struct nfsd4_secinfo *secinfo) |
| 624 | { |
| 625 | struct svc_fh resfh; |
| 626 | struct svc_export *exp; |
| 627 | struct dentry *dentry; |
| 628 | __be32 err; |
| 629 | |
| 630 | fh_init(&resfh, NFS4_FHSIZE); |
| 631 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
| 632 | secinfo->si_name, secinfo->si_namelen, |
| 633 | &exp, &dentry); |
| 634 | if (err) |
| 635 | return err; |
| 636 | if (dentry->d_inode == NULL) { |
| 637 | exp_put(exp); |
| 638 | err = nfserr_noent; |
| 639 | } else |
| 640 | secinfo->si_exp = exp; |
| 641 | dput(dentry); |
| 642 | return err; |
| 643 | } |
| 644 | |
| 645 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 646 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 647 | struct nfsd4_setattr *setattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 649 | __be32 status = nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
| 652 | nfs4_lock_state(); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 653 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 654 | &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | nfs4_unlock_state(); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 656 | if (status) { |
Greg Banks | 3e3b480 | 2006-10-02 02:17:41 -0700 | [diff] [blame] | 657 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 658 | return status; |
| 659 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | } |
| 661 | status = nfs_ok; |
| 662 | if (setattr->sa_acl != NULL) |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 663 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
| 664 | setattr->sa_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | if (status) |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 666 | return status; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 667 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | 0, (time_t)0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | return status; |
| 670 | } |
| 671 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 672 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 673 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 674 | struct nfsd4_write *write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | { |
| 676 | stateid_t *stateid = &write->wr_stateid; |
| 677 | struct file *filp = NULL; |
| 678 | u32 *p; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 679 | __be32 status = nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
| 681 | /* no need to check permission - this will be done in nfsd_write() */ |
| 682 | |
| 683 | if (write->wr_offset >= OFFSET_MAX) |
| 684 | return nfserr_inval; |
| 685 | |
| 686 | nfs4_lock_state(); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 687 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 688 | CHECK_FH | WR_STATE, &filp); |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 689 | if (filp) |
| 690 | get_file(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | nfs4_unlock_state(); |
| 692 | |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 693 | if (status) { |
| 694 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); |
| 695 | return status; |
| 696 | } |
| 697 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | write->wr_bytes_written = write->wr_buflen; |
| 699 | write->wr_how_written = write->wr_stable_how; |
| 700 | p = (u32 *)write->wr_verifier.data; |
| 701 | *p++ = nfssvc_boot.tv_sec; |
| 702 | *p++ = nfssvc_boot.tv_usec; |
| 703 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 704 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
| 705 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, |
| 706 | write->wr_buflen, &write->wr_how_written); |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 707 | if (filp) |
| 708 | fput(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | if (status == nfserr_symlink) |
| 711 | status = nfserr_inval; |
| 712 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | } |
| 714 | |
| 715 | /* This routine never returns NFS_OK! If there are no other errors, it |
| 716 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the |
| 717 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME |
| 718 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. |
| 719 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 720 | static __be32 |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 721 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 722 | struct nfsd4_verify *verify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 724 | __be32 *buf, *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | int count; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 726 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 728 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | if (status) |
| 730 | return status; |
| 731 | |
| 732 | if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) |
| 733 | || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) |
| 734 | return nfserr_attrnotsupp; |
| 735 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
| 736 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) |
| 737 | return nfserr_inval; |
| 738 | if (verify->ve_attrlen & 3) |
| 739 | return nfserr_inval; |
| 740 | |
| 741 | /* count in words: |
| 742 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 |
| 743 | */ |
| 744 | count = 4 + (verify->ve_attrlen >> 2); |
| 745 | buf = kmalloc(count << 2, GFP_KERNEL); |
| 746 | if (!buf) |
| 747 | return nfserr_resource; |
| 748 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 749 | status = nfsd4_encode_fattr(&cstate->current_fh, |
| 750 | cstate->current_fh.fh_export, |
| 751 | cstate->current_fh.fh_dentry, buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | &count, verify->ve_bmval, |
| 753 | rqstp); |
| 754 | |
| 755 | /* this means that nfsd4_encode_fattr() ran out of space */ |
| 756 | if (status == nfserr_resource && count == 0) |
| 757 | status = nfserr_not_same; |
| 758 | if (status) |
| 759 | goto out_kfree; |
| 760 | |
| 761 | p = buf + 3; |
| 762 | status = nfserr_not_same; |
| 763 | if (ntohl(*p++) != verify->ve_attrlen) |
| 764 | goto out_kfree; |
| 765 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) |
| 766 | status = nfserr_same; |
| 767 | |
| 768 | out_kfree: |
| 769 | kfree(buf); |
| 770 | return status; |
| 771 | } |
| 772 | |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 773 | static __be32 |
| 774 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 775 | struct nfsd4_verify *verify) |
| 776 | { |
| 777 | __be32 status; |
| 778 | |
| 779 | status = _nfsd4_verify(rqstp, cstate, verify); |
| 780 | return status == nfserr_not_same ? nfs_ok : status; |
| 781 | } |
| 782 | |
| 783 | static __be32 |
| 784 | nfsd4_verify(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_same ? nfs_ok : status; |
| 791 | } |
| 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | /* |
| 794 | * NULL call. |
| 795 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 796 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
| 798 | { |
| 799 | return nfs_ok; |
| 800 | } |
| 801 | |
Shankar Anand | e2b2095 | 2006-07-10 04:45:44 -0700 | [diff] [blame] | 802 | static inline void nfsd4_increment_op_stats(u32 opnum) |
| 803 | { |
| 804 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) |
| 805 | nfsdstats.nfs4_opcount[opnum]++; |
| 806 | } |
| 807 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 808 | static void cstate_free(struct nfsd4_compound_state *cstate) |
| 809 | { |
| 810 | if (cstate == NULL) |
| 811 | return; |
| 812 | fh_put(&cstate->current_fh); |
| 813 | fh_put(&cstate->save_fh); |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 814 | BUG_ON(cstate->replay_owner); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 815 | kfree(cstate); |
| 816 | } |
| 817 | |
| 818 | static struct nfsd4_compound_state *cstate_alloc(void) |
| 819 | { |
| 820 | struct nfsd4_compound_state *cstate; |
| 821 | |
| 822 | cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL); |
| 823 | if (cstate == NULL) |
| 824 | return NULL; |
| 825 | fh_init(&cstate->current_fh, NFS4_FHSIZE); |
| 826 | fh_init(&cstate->save_fh, NFS4_FHSIZE); |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 827 | cstate->replay_owner = NULL; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 828 | return cstate; |
| 829 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 831 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
| 832 | void *); |
| 833 | |
| 834 | struct nfsd4_operation { |
| 835 | nfsd4op_func op_func; |
| 836 | u32 op_flags; |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 837 | /* Most ops require a valid current filehandle; a few don't: */ |
| 838 | #define ALLOWED_WITHOUT_FH 1 |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 839 | /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */ |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 840 | #define ALLOWED_ON_ABSENT_FS 2 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 841 | }; |
| 842 | |
| 843 | static struct nfsd4_operation nfsd4_ops[]; |
| 844 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | /* |
| 846 | * COMPOUND call. |
| 847 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 848 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
| 850 | struct nfsd4_compoundargs *args, |
| 851 | struct nfsd4_compoundres *resp) |
| 852 | { |
| 853 | struct nfsd4_op *op; |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 854 | struct nfsd4_operation *opdesc; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 855 | struct nfsd4_compound_state *cstate = NULL; |
J.Bruce Fields | e571019 | 2006-12-13 00:35:20 -0800 | [diff] [blame] | 856 | int slack_bytes; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 857 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
| 859 | status = nfserr_resource; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 860 | cstate = cstate_alloc(); |
| 861 | if (cstate == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
| 864 | resp->xbuf = &rqstp->rq_res; |
| 865 | resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; |
| 866 | resp->tagp = resp->p; |
| 867 | /* reserve space for: taglen, tag, and opcnt */ |
| 868 | resp->p += 2 + XDR_QUADLEN(args->taglen); |
| 869 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; |
| 870 | resp->taglen = args->taglen; |
| 871 | resp->tag = args->tag; |
| 872 | resp->opcnt = 0; |
| 873 | resp->rqstp = rqstp; |
| 874 | |
| 875 | /* |
| 876 | * According to RFC3010, this takes precedence over all other errors. |
| 877 | */ |
| 878 | status = nfserr_minor_vers_mismatch; |
| 879 | if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
| 880 | goto out; |
| 881 | |
| 882 | status = nfs_ok; |
| 883 | while (!status && resp->opcnt < args->opcnt) { |
| 884 | op = &args->ops[resp->opcnt++]; |
| 885 | |
J. Bruce Fields | fd44527 | 2006-01-18 17:43:23 -0800 | [diff] [blame] | 886 | dprintk("nfsv4 compound op #%d: %d\n", resp->opcnt, op->opnum); |
| 887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | /* |
| 889 | * The XDR decode routines may have pre-set op->status; |
| 890 | * for example, if there is a miscellaneous XDR error |
| 891 | * it will be set to nfserr_bad_xdr. |
| 892 | */ |
| 893 | if (op->status) |
| 894 | goto encode_op; |
| 895 | |
| 896 | /* We must be able to encode a successful response to |
| 897 | * this operation, with enough room left over to encode a |
| 898 | * failed response to the next operation. If we don't |
| 899 | * have enough room, fail with ERR_RESOURCE. |
| 900 | */ |
J.Bruce Fields | e571019 | 2006-12-13 00:35:20 -0800 | [diff] [blame] | 901 | slack_bytes = (char *)resp->end - (char *)resp->p; |
| 902 | if (slack_bytes < COMPOUND_SLACK_SPACE |
| 903 | + COMPOUND_ERR_SLACK_SPACE) { |
| 904 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | op->status = nfserr_resource; |
| 906 | goto encode_op; |
| 907 | } |
| 908 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 909 | opdesc = &nfsd4_ops[op->opnum]; |
| 910 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 911 | if (!cstate->current_fh.fh_dentry) { |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 912 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 913 | op->status = nfserr_nofilehandle; |
| 914 | goto encode_op; |
| 915 | } |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 916 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
| 917 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 918 | op->status = nfserr_moved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | goto encode_op; |
| 920 | } |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 921 | |
| 922 | if (opdesc->op_func) |
| 923 | op->status = opdesc->op_func(rqstp, cstate, &op->u); |
| 924 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | BUG_ON(op->status == nfs_ok); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | |
| 927 | encode_op: |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 928 | if (op->status == nfserr_replay_me) { |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 929 | op->replay = &cstate->replay_owner->so_replay; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | nfsd4_encode_replay(resp, op); |
| 931 | status = op->status = op->replay->rp_status; |
| 932 | } else { |
| 933 | nfsd4_encode_operation(resp, op); |
| 934 | status = op->status; |
| 935 | } |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 936 | if (cstate->replay_owner) { |
| 937 | nfs4_put_stateowner(cstate->replay_owner); |
| 938 | cstate->replay_owner = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | } |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 940 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
| 941 | if (op->opnum == OP_READ && op->u.read.rd_filp) |
| 942 | fput(op->u.read.rd_filp); |
Shankar Anand | e2b2095 | 2006-07-10 04:45:44 -0700 | [diff] [blame] | 943 | |
| 944 | nfsd4_increment_op_stats(op->opnum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | } |
| 946 | |
| 947 | out: |
| 948 | nfsd4_release_compoundargs(args); |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 949 | cstate_free(cstate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | return status; |
| 951 | } |
| 952 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 953 | static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = { |
| 954 | [OP_ACCESS] = { |
| 955 | .op_func = (nfsd4op_func)nfsd4_access, |
| 956 | }, |
| 957 | [OP_CLOSE] = { |
| 958 | .op_func = (nfsd4op_func)nfsd4_close, |
| 959 | }, |
| 960 | [OP_COMMIT] = { |
| 961 | .op_func = (nfsd4op_func)nfsd4_commit, |
| 962 | }, |
| 963 | [OP_CREATE] = { |
| 964 | .op_func = (nfsd4op_func)nfsd4_create, |
| 965 | }, |
| 966 | [OP_DELEGRETURN] = { |
| 967 | .op_func = (nfsd4op_func)nfsd4_delegreturn, |
| 968 | }, |
| 969 | [OP_GETATTR] = { |
| 970 | .op_func = (nfsd4op_func)nfsd4_getattr, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 971 | .op_flags = ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 972 | }, |
| 973 | [OP_GETFH] = { |
| 974 | .op_func = (nfsd4op_func)nfsd4_getfh, |
| 975 | }, |
| 976 | [OP_LINK] = { |
| 977 | .op_func = (nfsd4op_func)nfsd4_link, |
| 978 | }, |
| 979 | [OP_LOCK] = { |
| 980 | .op_func = (nfsd4op_func)nfsd4_lock, |
| 981 | }, |
| 982 | [OP_LOCKT] = { |
| 983 | .op_func = (nfsd4op_func)nfsd4_lockt, |
| 984 | }, |
| 985 | [OP_LOCKU] = { |
| 986 | .op_func = (nfsd4op_func)nfsd4_locku, |
| 987 | }, |
| 988 | [OP_LOOKUP] = { |
| 989 | .op_func = (nfsd4op_func)nfsd4_lookup, |
| 990 | }, |
| 991 | [OP_LOOKUPP] = { |
| 992 | .op_func = (nfsd4op_func)nfsd4_lookupp, |
| 993 | }, |
| 994 | [OP_NVERIFY] = { |
| 995 | .op_func = (nfsd4op_func)nfsd4_nverify, |
| 996 | }, |
| 997 | [OP_OPEN] = { |
| 998 | .op_func = (nfsd4op_func)nfsd4_open, |
| 999 | }, |
| 1000 | [OP_OPEN_CONFIRM] = { |
| 1001 | .op_func = (nfsd4op_func)nfsd4_open_confirm, |
| 1002 | }, |
| 1003 | [OP_OPEN_DOWNGRADE] = { |
| 1004 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, |
| 1005 | }, |
| 1006 | [OP_PUTFH] = { |
| 1007 | .op_func = (nfsd4op_func)nfsd4_putfh, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1008 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1009 | }, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 1010 | [OP_PUTPUBFH] = { |
| 1011 | /* unsupported; just for future reference: */ |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1012 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 1013 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1014 | [OP_PUTROOTFH] = { |
| 1015 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1016 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1017 | }, |
| 1018 | [OP_READ] = { |
| 1019 | .op_func = (nfsd4op_func)nfsd4_read, |
| 1020 | }, |
| 1021 | [OP_READDIR] = { |
| 1022 | .op_func = (nfsd4op_func)nfsd4_readdir, |
| 1023 | }, |
| 1024 | [OP_READLINK] = { |
| 1025 | .op_func = (nfsd4op_func)nfsd4_readlink, |
| 1026 | }, |
| 1027 | [OP_REMOVE] = { |
| 1028 | .op_func = (nfsd4op_func)nfsd4_remove, |
| 1029 | }, |
| 1030 | [OP_RENAME] = { |
| 1031 | .op_func = (nfsd4op_func)nfsd4_rename, |
| 1032 | }, |
| 1033 | [OP_RENEW] = { |
| 1034 | .op_func = (nfsd4op_func)nfsd4_renew, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1035 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1036 | }, |
| 1037 | [OP_RESTOREFH] = { |
| 1038 | .op_func = (nfsd4op_func)nfsd4_restorefh, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1039 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1040 | }, |
| 1041 | [OP_SAVEFH] = { |
| 1042 | .op_func = (nfsd4op_func)nfsd4_savefh, |
| 1043 | }, |
Andy Adamson | dcb488a | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 1044 | [OP_SECINFO] = { |
| 1045 | .op_func = (nfsd4op_func)nfsd4_secinfo, |
| 1046 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1047 | [OP_SETATTR] = { |
| 1048 | .op_func = (nfsd4op_func)nfsd4_setattr, |
| 1049 | }, |
| 1050 | [OP_SETCLIENTID] = { |
| 1051 | .op_func = (nfsd4op_func)nfsd4_setclientid, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1052 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1053 | }, |
| 1054 | [OP_SETCLIENTID_CONFIRM] = { |
| 1055 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1056 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1057 | }, |
| 1058 | [OP_VERIFY] = { |
| 1059 | .op_func = (nfsd4op_func)nfsd4_verify, |
| 1060 | }, |
| 1061 | [OP_WRITE] = { |
| 1062 | .op_func = (nfsd4op_func)nfsd4_write, |
| 1063 | }, |
| 1064 | [OP_RELEASE_LOCKOWNER] = { |
| 1065 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, |
J.Bruce Fields | 27d630e | 2006-12-13 00:35:43 -0800 | [diff] [blame] | 1066 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1067 | }, |
| 1068 | }; |
| 1069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | #define nfs4svc_decode_voidargs NULL |
| 1071 | #define nfs4svc_release_void NULL |
| 1072 | #define nfsd4_voidres nfsd4_voidargs |
| 1073 | #define nfs4svc_release_compound NULL |
| 1074 | struct nfsd4_voidargs { int dummy; }; |
| 1075 | |
| 1076 | #define PROC(name, argt, rest, relt, cache, respsize) \ |
| 1077 | { (svc_procfunc) nfsd4_proc_##name, \ |
| 1078 | (kxdrproc_t) nfs4svc_decode_##argt##args, \ |
| 1079 | (kxdrproc_t) nfs4svc_encode_##rest##res, \ |
| 1080 | (kxdrproc_t) nfs4svc_release_##relt, \ |
| 1081 | sizeof(struct nfsd4_##argt##args), \ |
| 1082 | sizeof(struct nfsd4_##rest##res), \ |
| 1083 | 0, \ |
| 1084 | cache, \ |
| 1085 | respsize, \ |
| 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * TODO: At the present time, the NFSv4 server does not do XID caching |
| 1090 | * of requests. Implementing XID caching would not be a serious problem, |
| 1091 | * although it would require a mild change in interfaces since one |
| 1092 | * doesn't know whether an NFSv4 request is idempotent until after the |
| 1093 | * XDR decode. However, XID caching totally confuses pynfs (Peter |
| 1094 | * Astrand's regression testsuite for NFSv4 servers), which reuses |
| 1095 | * XID's liberally, so I've left it unimplemented until pynfs generates |
| 1096 | * better XID's. |
| 1097 | */ |
| 1098 | static struct svc_procedure nfsd_procedures4[2] = { |
| 1099 | PROC(null, void, void, void, RC_NOCACHE, 1), |
NeilBrown | 7775f4c | 2006-04-10 22:55:20 -0700 | [diff] [blame] | 1100 | PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | }; |
| 1102 | |
| 1103 | struct svc_version nfsd_version4 = { |
| 1104 | .vs_vers = 4, |
| 1105 | .vs_nproc = 2, |
| 1106 | .vs_proc = nfsd_procedures4, |
| 1107 | .vs_dispatch = nfsd_dispatch, |
| 1108 | .vs_xdrsize = NFS4_SVC_XDRSIZE, |
| 1109 | }; |
| 1110 | |
| 1111 | /* |
| 1112 | * Local variables: |
| 1113 | * c-basic-offset: 8 |
| 1114 | * End: |
| 1115 | */ |