Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Server-side procedures for NFSv4. |
| 3 | * |
| 4 | * Copyright (c) 2002 The Regents of the University of Michigan. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Kendrick Smith <kmsmith@umich.edu> |
| 8 | * Andy Adamson <andros@umich.edu> |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. Neither the name of the University nor the names of its |
| 20 | * contributors may be used to endorse or promote products derived |
| 21 | * from this software without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | */ |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 35 | #include <linux/fs_struct.h> |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 36 | #include <linux/file.h> |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 37 | #include <linux/falloc.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 38 | #include <linux/slab.h> |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 39 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 41 | #include "idmap.h" |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 42 | #include "cache.h" |
| 43 | #include "xdr4.h" |
J. Bruce Fields | 0a3adad | 2009-11-04 18:12:35 -0500 | [diff] [blame] | 44 | #include "vfs.h" |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 45 | #include "current_stateid.h" |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 46 | #include "netns.h" |
Christoph Hellwig | 4ac7249 | 2013-12-20 05:16:55 -0800 | [diff] [blame] | 47 | #include "acl.h" |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 48 | #include "pnfs.h" |
Christoph Hellwig | 31ef83d | 2014-08-16 19:02:22 -0500 | [diff] [blame] | 49 | #include "trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 51 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
| 52 | #include <linux/security.h> |
| 53 | |
| 54 | static inline void |
| 55 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) |
| 56 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 57 | struct inode *inode = d_inode(resfh->fh_dentry); |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 58 | int status; |
| 59 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 60 | inode_lock(inode); |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 61 | status = security_inode_setsecctx(resfh->fh_dentry, |
| 62 | label->data, label->len); |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 63 | inode_unlock(inode); |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 64 | |
| 65 | if (status) |
| 66 | /* |
| 67 | * XXX: We should really fail the whole open, but we may |
| 68 | * already have created a new file, so it may be too |
| 69 | * late. For now this seems the least of evils: |
| 70 | */ |
| 71 | bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
| 72 | |
| 73 | return; |
| 74 | } |
| 75 | #else |
| 76 | static inline void |
| 77 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) |
| 78 | { } |
| 79 | #endif |
| 80 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
| 82 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 83 | static u32 nfsd_attrmask[] = { |
| 84 | NFSD_WRITEABLE_ATTRS_WORD0, |
| 85 | NFSD_WRITEABLE_ATTRS_WORD1, |
| 86 | NFSD_WRITEABLE_ATTRS_WORD2 |
| 87 | }; |
| 88 | |
| 89 | static u32 nfsd41_ex_attrmask[] = { |
| 90 | NFSD_SUPPATTR_EXCLCREAT_WORD0, |
| 91 | NFSD_SUPPATTR_EXCLCREAT_WORD1, |
| 92 | NFSD_SUPPATTR_EXCLCREAT_WORD2 |
| 93 | }; |
| 94 | |
| 95 | static __be32 |
| 96 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 97 | u32 *bmval, u32 *writable) |
| 98 | { |
| 99 | struct dentry *dentry = cstate->current_fh.fh_dentry; |
J. Bruce Fields | 32ddd94 | 2017-01-03 12:30:11 -0500 | [diff] [blame] | 100 | struct svc_export *exp = cstate->current_fh.fh_export; |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 101 | |
J. Bruce Fields | 916d2d8 | 2016-10-18 14:18:40 -0400 | [diff] [blame] | 102 | if (!nfsd_attrs_supported(cstate->minorversion, bmval)) |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 103 | return nfserr_attrnotsupp; |
J. Bruce Fields | 916d2d8 | 2016-10-18 14:18:40 -0400 | [diff] [blame] | 104 | if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry))) |
| 105 | return nfserr_attrnotsupp; |
J. Bruce Fields | 32ddd94 | 2017-01-03 12:30:11 -0500 | [diff] [blame] | 106 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) && |
| 107 | !(exp->ex_flags & NFSEXP_SECURITY_LABEL)) |
| 108 | return nfserr_attrnotsupp; |
J. Bruce Fields | 916d2d8 | 2016-10-18 14:18:40 -0400 | [diff] [blame] | 109 | if (writable && !bmval_is_subset(bmval, writable)) |
| 110 | return nfserr_inval; |
Andreas Gruenbacher | 47057ab | 2016-01-12 20:24:14 +0100 | [diff] [blame] | 111 | if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) && |
| 112 | (bmval[1] & FATTR4_WORD1_MODE)) |
| 113 | return nfserr_inval; |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 114 | return nfs_ok; |
| 115 | } |
| 116 | |
| 117 | static __be32 |
| 118 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, |
| 119 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
| 120 | { |
| 121 | __be32 status = nfs_ok; |
| 122 | |
| 123 | if (open->op_create == NFS4_OPEN_CREATE) { |
| 124 | if (open->op_createmode == NFS4_CREATE_UNCHECKED |
| 125 | || open->op_createmode == NFS4_CREATE_GUARDED) |
| 126 | status = check_attr_support(rqstp, cstate, |
| 127 | open->op_bmval, nfsd_attrmask); |
| 128 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) |
| 129 | status = check_attr_support(rqstp, cstate, |
| 130 | open->op_bmval, nfsd41_ex_attrmask); |
| 131 | } |
| 132 | |
| 133 | return status; |
| 134 | } |
| 135 | |
Yu Zhiguo | 9208faf | 2009-07-06 17:24:16 +0800 | [diff] [blame] | 136 | static int |
| 137 | is_create_with_attrs(struct nfsd4_open *open) |
| 138 | { |
| 139 | return open->op_create == NFS4_OPEN_CREATE |
| 140 | && (open->op_createmode == NFS4_CREATE_UNCHECKED |
| 141 | || open->op_createmode == NFS4_CREATE_GUARDED |
| 142 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); |
| 143 | } |
| 144 | |
| 145 | /* |
| 146 | * if error occurs when setting the acl, just clear the acl bit |
| 147 | * in the returned attr bitmap. |
| 148 | */ |
| 149 | static void |
| 150 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, |
| 151 | struct nfs4_acl *acl, u32 *bmval) |
| 152 | { |
| 153 | __be32 status; |
| 154 | |
| 155 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); |
| 156 | if (status) |
| 157 | /* |
| 158 | * We should probably fail the whole open at this point, |
| 159 | * but we've already created the file, so it's too late; |
| 160 | * So this seems the least of evils: |
| 161 | */ |
| 162 | bmval[0] &= ~FATTR4_WORD0_ACL; |
| 163 | } |
| 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | static inline void |
| 166 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) |
| 167 | { |
| 168 | fh_put(dst); |
| 169 | dget(src->fh_dentry); |
| 170 | if (src->fh_export) |
Kinglong Mee | bf18f16 | 2014-06-10 22:06:44 +0800 | [diff] [blame] | 171 | exp_get(src->fh_export); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | *dst = *src; |
| 173 | } |
| 174 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 175 | static __be32 |
J. Bruce Fields | dc730e1 | 2006-10-17 00:10:13 -0700 | [diff] [blame] | 176 | 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] | 177 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 178 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | if (open->op_truncate && |
| 181 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) |
| 182 | return nfserr_inval; |
| 183 | |
J. Bruce Fields | a043226 | 2011-08-25 10:48:39 -0400 | [diff] [blame] | 184 | accmode |= NFSD_MAY_READ_IF_EXEC; |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 187 | accmode |= NFSD_MAY_READ; |
J. Bruce Fields | 9801d8a | 2006-10-17 00:10:14 -0700 | [diff] [blame] | 188 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 189 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
J. Bruce Fields | 57ecb34 | 2009-12-01 19:42:57 -0500 | [diff] [blame] | 190 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 191 | accmode |= NFSD_MAY_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
| 193 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); |
| 194 | |
| 195 | return status; |
| 196 | } |
| 197 | |
J. Bruce Fields | aadab6c | 2011-08-15 16:55:02 -0400 | [diff] [blame] | 198 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
| 199 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 200 | umode_t mode = d_inode(fh->fh_dentry)->i_mode; |
J. Bruce Fields | aadab6c | 2011-08-15 16:55:02 -0400 | [diff] [blame] | 201 | |
| 202 | if (S_ISREG(mode)) |
| 203 | return nfs_ok; |
| 204 | if (S_ISDIR(mode)) |
| 205 | return nfserr_isdir; |
| 206 | /* |
| 207 | * Using err_symlink as our catch-all case may look odd; but |
| 208 | * there's no other obvious error for this case in 4.0, and we |
| 209 | * happen to know that it will cause the linux v4 client to do |
| 210 | * the right thing on attempts to open something other than a |
| 211 | * regular file. |
| 212 | */ |
| 213 | return nfserr_symlink; |
| 214 | } |
| 215 | |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 216 | static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | { |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 218 | if (nfsd4_has_session(cstate)) |
| 219 | return; |
| 220 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, |
| 221 | &resfh->fh_handle); |
| 222 | } |
| 223 | |
| 224 | static __be32 |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 225 | do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 226 | { |
| 227 | struct svc_fh *current_fh = &cstate->current_fh; |
Neil Brown | 7007c90 | 2012-12-07 15:40:55 -0500 | [diff] [blame] | 228 | int accmode; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 229 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 231 | *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
| 232 | if (!*resfh) |
J. Bruce Fields | 59deeb9 | 2012-01-27 16:49:55 -0500 | [diff] [blame] | 233 | return nfserr_jukebox; |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 234 | fh_init(*resfh, NFS4_FHSIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | open->op_truncate = 0; |
| 236 | |
| 237 | if (open->op_create) { |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 238 | /* FIXME: check session persistence and pnfs flags. |
| 239 | * The nfsv4.1 spec requires the following semantics: |
| 240 | * |
| 241 | * Persistent | pNFS | Server REQUIRED | Client Allowed |
| 242 | * Reply Cache | server | | |
| 243 | * -------------+--------+-----------------+-------------------- |
| 244 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 |
| 245 | * | | | (SHOULD) |
| 246 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 |
| 247 | * | | | (SHOULD NOT) |
| 248 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 |
| 249 | * yes | no | GUARDED4 | GUARDED4 |
| 250 | * yes | yes | GUARDED4 | GUARDED4 |
| 251 | */ |
| 252 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | /* |
| 254 | * Note: create modes (UNCHECKED,GUARDED...) are the same |
Mi Jinlong | ac6721a | 2011-04-20 17:06:25 +0800 | [diff] [blame] | 255 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | */ |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 257 | current->fs->umask = open->op_umask; |
Mi Jinlong | ac6721a | 2011-04-20 17:06:25 +0800 | [diff] [blame] | 258 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | open->op_fname.len, &open->op_iattr, |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 260 | *resfh, open->op_createmode, |
Jeff Layton | 749997e | 2007-07-31 00:37:51 -0700 | [diff] [blame] | 261 | (u32 *)open->op_verf.data, |
J. Bruce Fields | 856121b | 2011-10-13 11:37:11 -0400 | [diff] [blame] | 262 | &open->op_truncate, &open->op_created); |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 263 | current->fs->umask = 0; |
Jeff Layton | 749997e | 2007-07-31 00:37:51 -0700 | [diff] [blame] | 264 | |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 265 | if (!status && open->op_label.len) |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 266 | nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 267 | |
J. Bruce Fields | 99f8872 | 2009-02-02 15:12:27 -0500 | [diff] [blame] | 268 | /* |
Kinglong Mee | ead8fb8 | 2015-07-30 21:55:02 +0800 | [diff] [blame] | 269 | * Following rfc 3530 14.2.16, and rfc 5661 18.16.4 |
| 270 | * use the returned bitmask to indicate which attributes |
| 271 | * we used to store the verifier: |
Jeff Layton | 749997e | 2007-07-31 00:37:51 -0700 | [diff] [blame] | 272 | */ |
Kinglong Mee | ead8fb8 | 2015-07-30 21:55:02 +0800 | [diff] [blame] | 273 | if (nfsd_create_is_exclusive(open->op_createmode) && status == 0) |
| 274 | open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS | |
| 275 | FATTR4_WORD1_TIME_MODIFY); |
J. Bruce Fields | 4335723 | 2014-01-24 18:04:40 -0500 | [diff] [blame] | 276 | } else |
| 277 | /* |
| 278 | * Note this may exit with the parent still locked. |
| 279 | * We will hold the lock until nfsd4_open's final |
| 280 | * lookup, to prevent renames or unlinks until we've had |
| 281 | * a chance to an acquire a delegation if appropriate. |
| 282 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | status = nfsd_lookup(rqstp, current_fh, |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 284 | open->op_fname.data, open->op_fname.len, *resfh); |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 285 | if (status) |
| 286 | goto out; |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 287 | status = nfsd_check_obj_isreg(*resfh); |
J. Bruce Fields | 9dc4e6c | 2012-04-09 18:06:49 -0400 | [diff] [blame] | 288 | if (status) |
| 289 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
Yu Zhiguo | 9208faf | 2009-07-06 17:24:16 +0800 | [diff] [blame] | 291 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 292 | do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); |
Yu Zhiguo | 9208faf | 2009-07-06 17:24:16 +0800 | [diff] [blame] | 293 | |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 294 | nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); |
Neil Brown | 7007c90 | 2012-12-07 15:40:55 -0500 | [diff] [blame] | 295 | accmode = NFSD_MAY_NOP; |
J. Bruce Fields | 89f6c33 | 2013-06-19 15:47:37 -0400 | [diff] [blame] | 296 | if (open->op_created || |
| 297 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) |
Neil Brown | 7007c90 | 2012-12-07 15:40:55 -0500 | [diff] [blame] | 298 | accmode |= NFSD_MAY_OWNER_OVERRIDE; |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 299 | status = do_open_permission(rqstp, *resfh, open, accmode); |
J. Bruce Fields | 41fd1e4 | 2012-01-27 16:26:02 -0500 | [diff] [blame] | 300 | set_change_info(&open->op_cinfo, current_fh); |
J. Bruce Fields | af85852 | 2006-11-08 17:44:39 -0800 | [diff] [blame] | 301 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | return status; |
| 303 | } |
| 304 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 305 | static __be32 |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 306 | do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | { |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 308 | struct svc_fh *current_fh = &cstate->current_fh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 309 | __be32 status; |
J. Bruce Fields | 9f415eb | 2013-05-03 16:09:09 -0400 | [diff] [blame] | 310 | int accmode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | /* We don't know the target directory, and therefore can not |
| 313 | * set the change info |
| 314 | */ |
| 315 | |
| 316 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); |
| 317 | |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 318 | nfsd4_set_open_owner_reply_cache(cstate, open, current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
| 320 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && |
| 321 | (open->op_iattr.ia_size == 0); |
J. Bruce Fields | 9f415eb | 2013-05-03 16:09:09 -0400 | [diff] [blame] | 322 | /* |
| 323 | * In the delegation case, the client is telling us about an |
| 324 | * open that it *already* performed locally, some time ago. We |
| 325 | * should let it succeed now if possible. |
| 326 | * |
| 327 | * In the case of a CLAIM_FH open, on the other hand, the client |
| 328 | * may be counting on us to enforce permissions (the Linux 4.1 |
| 329 | * client uses this for normal opens, for example). |
| 330 | */ |
| 331 | if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH) |
| 332 | accmode = NFSD_MAY_OWNER_OVERRIDE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
J. Bruce Fields | 9f415eb | 2013-05-03 16:09:09 -0400 | [diff] [blame] | 334 | status = do_open_permission(rqstp, current_fh, open, accmode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | return status; |
| 337 | } |
| 338 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 339 | static void |
| 340 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) |
| 341 | { |
| 342 | struct nfsd4_sessionid *sid = |
| 343 | (struct nfsd4_sessionid *)session->se_sessionid.data; |
| 344 | |
| 345 | clid->cl_boot = sid->clientid.cl_boot; |
| 346 | clid->cl_id = sid->clientid.cl_id; |
| 347 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 349 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 350 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 351 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 353 | struct nfsd4_open *open = &u->open; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 354 | __be32 status; |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 355 | struct svc_fh *resfh = NULL; |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 356 | struct net *net = SVC_NET(rqstp); |
| 357 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
J. Bruce Fields | 03f318c | 2018-06-08 12:28:47 -0400 | [diff] [blame] | 358 | bool reclaim = false; |
Andy Adamson | 6668958 | 2009-04-03 08:28:45 +0300 | [diff] [blame] | 359 | |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 360 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | (int)open->op_fname.len, open->op_fname.data, |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 362 | open->op_openowner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | /* This check required by spec. */ |
| 365 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) |
| 366 | return nfserr_inval; |
| 367 | |
J. Bruce Fields | 856121b | 2011-10-13 11:37:11 -0400 | [diff] [blame] | 368 | open->op_created = 0; |
Mi Jinlong | ab1350b | 2011-07-14 15:06:26 +0800 | [diff] [blame] | 369 | /* |
| 370 | * RFC5661 18.51.3 |
| 371 | * Before RECLAIM_COMPLETE done, server should deny new lock |
| 372 | */ |
| 373 | if (nfsd4_has_session(cstate) && |
Jeff Layton | a52d726 | 2012-03-21 09:52:02 -0400 | [diff] [blame] | 374 | !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, |
| 375 | &cstate->session->se_client->cl_flags) && |
Mi Jinlong | ab1350b | 2011-07-14 15:06:26 +0800 | [diff] [blame] | 376 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
| 377 | return nfserr_grace; |
| 378 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 379 | if (nfsd4_has_session(cstate)) |
| 380 | copy_clientid(&open->op_clientid, cstate->session); |
| 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* check seqid for replay. set nfs4_owner */ |
Kinglong Mee | 6cd2266 | 2015-07-13 17:32:05 +0800 | [diff] [blame] | 383 | status = nfsd4_process_open1(cstate, open, nn); |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 384 | if (status == nfserr_replay_me) { |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 385 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 386 | fh_put(&cstate->current_fh); |
J. Bruce Fields | a4773c0 | 2009-02-02 17:23:10 -0500 | [diff] [blame] | 387 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
| 388 | &rp->rp_openfh); |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 389 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | if (status) |
| 391 | dprintk("nfsd4_open: replay failed" |
| 392 | " restoring previous filehandle\n"); |
| 393 | else |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 394 | status = nfserr_replay_me; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
| 396 | if (status) |
| 397 | goto out; |
J. Bruce Fields | 9d313b1 | 2013-02-28 12:51:49 -0800 | [diff] [blame] | 398 | if (open->op_xdr_error) { |
| 399 | status = open->op_xdr_error; |
| 400 | goto out; |
| 401 | } |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 402 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 403 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
| 404 | if (status) |
| 405 | goto out; |
| 406 | |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 407 | /* Openowner is now set, so sequence id will get bumped. Now we need |
| 408 | * these checks before we do any creates: */ |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 409 | status = nfserr_grace; |
J. Bruce Fields | c87fb4a | 2015-08-06 12:47:02 -0400 | [diff] [blame] | 410 | if (opens_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 411 | goto out; |
| 412 | status = nfserr_no_grace; |
J. Bruce Fields | c87fb4a | 2015-08-06 12:47:02 -0400 | [diff] [blame] | 413 | if (!opens_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
J. Bruce Fields | cbd0d51 | 2006-02-07 12:58:32 -0800 | [diff] [blame] | 414 | goto out; |
J. Bruce Fields | fb553c0 | 2006-01-18 17:43:36 -0800 | [diff] [blame] | 415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | switch (open->op_claim_type) { |
NeilBrown | 0dd3c19 | 2005-06-23 22:02:56 -0700 | [diff] [blame] | 417 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | case NFS4_OPEN_CLAIM_NULL: |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 419 | status = do_open_lookup(rqstp, cstate, open, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | if (status) |
| 421 | goto out; |
| 422 | break; |
| 423 | case NFS4_OPEN_CLAIM_PREVIOUS: |
Stanislav Kinsbursky | 3320fef19 | 2012-11-14 18:22:07 +0300 | [diff] [blame] | 424 | status = nfs4_check_open_reclaim(&open->op_clientid, |
Trond Myklebust | 0fe492d | 2014-06-30 11:48:47 -0400 | [diff] [blame] | 425 | cstate, nn); |
Mi Jinlong | 0cf99b9 | 2011-11-23 10:48:40 +0800 | [diff] [blame] | 426 | if (status) |
| 427 | goto out; |
Jeff Layton | ba5378b | 2014-05-30 09:09:28 -0400 | [diff] [blame] | 428 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
J. Bruce Fields | 03f318c | 2018-06-08 12:28:47 -0400 | [diff] [blame] | 429 | reclaim = true; |
Gustavo A. R. Silva | 0a4c926 | 2019-01-23 02:48:28 -0600 | [diff] [blame] | 430 | /* fall through */ |
J. Bruce Fields | 8b289b2 | 2011-10-19 11:52:12 -0400 | [diff] [blame] | 431 | case NFS4_OPEN_CLAIM_FH: |
| 432 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: |
J. Bruce Fields | bbc9c36c | 2013-03-22 18:03:49 -0400 | [diff] [blame] | 433 | status = do_open_fhandle(rqstp, cstate, open); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | if (status) |
| 435 | goto out; |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 436 | resfh = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | break; |
J. Bruce Fields | 8b289b2 | 2011-10-19 11:52:12 -0400 | [diff] [blame] | 438 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
J. Bruce Fields | 2fdada0 | 2007-07-27 16:10:37 -0400 | [diff] [blame] | 440 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | open->op_claim_type); |
| 442 | status = nfserr_notsupp; |
| 443 | goto out; |
| 444 | default: |
J. Bruce Fields | 2fdada0 | 2007-07-27 16:10:37 -0400 | [diff] [blame] | 445 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | open->op_claim_type); |
| 447 | status = nfserr_inval; |
| 448 | goto out; |
| 449 | } |
| 450 | /* |
| 451 | * nfsd4_process_open2() does the actual opening of the file. If |
| 452 | * successful, it (1) truncates the file if open->op_truncate was |
| 453 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. |
| 454 | */ |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 455 | status = nfsd4_process_open2(rqstp, resfh, open); |
Jeff Layton | b3fbfe0 | 2014-07-29 21:37:44 -0400 | [diff] [blame] | 456 | WARN(status && open->op_created, |
| 457 | "nfsd4_process_open2 failed to open newly-created file! status=%u\n", |
| 458 | be32_to_cpu(status)); |
J. Bruce Fields | 03f318c | 2018-06-08 12:28:47 -0400 | [diff] [blame] | 459 | if (reclaim && !status) |
| 460 | nn->somebody_reclaimed = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | out: |
J. Bruce Fields | c0e6bee | 2012-01-27 17:26:06 -0500 | [diff] [blame] | 462 | if (resfh && resfh != &cstate->current_fh) { |
| 463 | fh_dup2(&cstate->current_fh, resfh); |
| 464 | fh_put(resfh); |
| 465 | kfree(resfh); |
| 466 | } |
Jeff Layton | 4229789 | 2015-03-23 10:53:44 -0400 | [diff] [blame] | 467 | nfsd4_cleanup_open_state(cstate, open); |
J. Bruce Fields | 9411b1d | 2013-04-01 16:37:12 -0400 | [diff] [blame] | 468 | nfsd4_bump_seqid(cstate, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | return status; |
| 470 | } |
| 471 | |
| 472 | /* |
J. Bruce Fields | 9d313b1 | 2013-02-28 12:51:49 -0800 | [diff] [blame] | 473 | * OPEN is the only seqid-mutating operation whose decoding can fail |
| 474 | * with a seqid-mutating error (specifically, decoding of user names in |
| 475 | * the attributes). Therefore we have to do some processing to look up |
| 476 | * the stateowner so that we can bump the seqid. |
| 477 | */ |
| 478 | static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op) |
| 479 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 480 | struct nfsd4_open *open = &op->u.open; |
J. Bruce Fields | 9d313b1 | 2013-02-28 12:51:49 -0800 | [diff] [blame] | 481 | |
| 482 | if (!seqid_mutating_err(ntohl(op->status))) |
| 483 | return op->status; |
| 484 | if (nfsd4_has_session(cstate)) |
| 485 | return op->status; |
| 486 | open->op_xdr_error = op->status; |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 487 | return nfsd4_open(rqstp, cstate, &op->u); |
J. Bruce Fields | 9d313b1 | 2013-02-28 12:51:49 -0800 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | * filehandle-manipulating ops. |
| 492 | */ |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 493 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 494 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 495 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 497 | u->getfh = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | return nfs_ok; |
| 499 | } |
| 500 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 501 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 502 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 503 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 505 | struct nfsd4_putfh *putfh = &u->putfh; |
| 506 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 507 | fh_put(&cstate->current_fh); |
| 508 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; |
| 509 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, |
| 510 | putfh->pf_fhlen); |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 511 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | } |
| 513 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 514 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 515 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 516 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 518 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 520 | fh_put(&cstate->current_fh); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 521 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | return status; |
| 523 | } |
| 524 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 525 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 526 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 527 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 529 | if (!cstate->save_fh.fh_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | return nfserr_restorefh; |
| 531 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 532 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
Tigran Mkrtchyan | 37c593c | 2012-02-13 22:55:32 +0100 | [diff] [blame] | 533 | if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { |
| 534 | memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); |
| 535 | SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); |
| 536 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | return nfs_ok; |
| 538 | } |
| 539 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 540 | static __be32 |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 541 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 542 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 544 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
Tigran Mkrtchyan | 37c593c | 2012-02-13 22:55:32 +0100 | [diff] [blame] | 545 | if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { |
| 546 | memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); |
| 547 | SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); |
| 548 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | return nfs_ok; |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * misc nfsv4 ops |
| 554 | */ |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 555 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 556 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 557 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 559 | struct nfsd4_access *access = &u->access; |
| 560 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) |
| 562 | return nfserr_inval; |
| 563 | |
| 564 | access->ac_resp_access = access->ac_req_access; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 565 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
| 566 | &access->ac_supported); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | } |
| 568 | |
Stanislav Kinsbursky | b9c0ef8 | 2012-12-06 14:23:19 +0300 | [diff] [blame] | 569 | static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net) |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 570 | { |
| 571 | __be32 verf[2]; |
Stanislav Kinsbursky | b9c0ef8 | 2012-12-06 14:23:19 +0300 | [diff] [blame] | 572 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 573 | |
Jeff Layton | f419992 | 2014-06-17 07:44:11 -0400 | [diff] [blame] | 574 | /* |
| 575 | * This is opaque to client, so no need to byte-swap. Use |
Arnd Bergmann | 256a89f | 2017-10-19 12:04:11 +0200 | [diff] [blame] | 576 | * __force to keep sparse happy. y2038 time_t overflow is |
| 577 | * irrelevant in this usage. |
Jeff Layton | f419992 | 2014-06-17 07:44:11 -0400 | [diff] [blame] | 578 | */ |
| 579 | verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec; |
Arnd Bergmann | 256a89f | 2017-10-19 12:04:11 +0200 | [diff] [blame] | 580 | verf[1] = (__force __be32)nn->nfssvc_boot.tv_nsec; |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 581 | memcpy(verifier->data, verf, sizeof(verifier->data)); |
| 582 | } |
| 583 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 584 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 585 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 586 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 588 | struct nfsd4_commit *commit = &u->commit; |
| 589 | |
Stanislav Kinsbursky | b9c0ef8 | 2012-12-06 14:23:19 +0300 | [diff] [blame] | 590 | gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp)); |
J. Bruce Fields | 75c096f | 2011-08-15 18:39:32 -0400 | [diff] [blame] | 591 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 592 | commit->co_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | } |
| 594 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 595 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 596 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 597 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 599 | struct nfsd4_create *create = &u->create; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | struct svc_fh resfh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 601 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | dev_t rdev; |
| 603 | |
| 604 | fh_init(&resfh, NFS4_FHSIZE); |
| 605 | |
J. Bruce Fields | fa08139 | 2016-07-21 16:00:12 -0400 | [diff] [blame] | 606 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | if (status) |
| 608 | return status; |
| 609 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 610 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
| 611 | nfsd_attrmask); |
| 612 | if (status) |
| 613 | return status; |
| 614 | |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 615 | current->fs->umask = create->cr_umask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | switch (create->cr_type) { |
| 617 | case NF4LNK: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 618 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
| 619 | create->cr_name, create->cr_namelen, |
Kinglong Mee | 1e444f5 | 2014-07-01 17:48:02 +0800 | [diff] [blame] | 620 | create->cr_data, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | break; |
| 622 | |
| 623 | case NF4BLK: |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 624 | status = nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
| 626 | if (MAJOR(rdev) != create->cr_specdata1 || |
| 627 | MINOR(rdev) != create->cr_specdata2) |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 628 | goto out_umask; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 629 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 630 | create->cr_name, create->cr_namelen, |
| 631 | &create->cr_iattr, S_IFBLK, rdev, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | break; |
| 633 | |
| 634 | case NF4CHR: |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 635 | status = nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
| 637 | if (MAJOR(rdev) != create->cr_specdata1 || |
| 638 | MINOR(rdev) != create->cr_specdata2) |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 639 | goto out_umask; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 640 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 641 | create->cr_name, create->cr_namelen, |
| 642 | &create->cr_iattr,S_IFCHR, rdev, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | break; |
| 644 | |
| 645 | case NF4SOCK: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 646 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 647 | create->cr_name, create->cr_namelen, |
| 648 | &create->cr_iattr, S_IFSOCK, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | break; |
| 650 | |
| 651 | case NF4FIFO: |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 652 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 653 | create->cr_name, create->cr_namelen, |
| 654 | &create->cr_iattr, S_IFIFO, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | break; |
| 656 | |
| 657 | case NF4DIR: |
| 658 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 659 | status = nfsd_create(rqstp, &cstate->current_fh, |
| 660 | create->cr_name, create->cr_namelen, |
| 661 | &create->cr_iattr, S_IFDIR, 0, &resfh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | break; |
| 663 | |
| 664 | default: |
| 665 | status = nfserr_badtype; |
| 666 | } |
| 667 | |
Yu Zhiguo | 9208faf | 2009-07-06 17:24:16 +0800 | [diff] [blame] | 668 | if (status) |
| 669 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 671 | if (create->cr_label.len) |
| 672 | nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval); |
| 673 | |
Yu Zhiguo | 9208faf | 2009-07-06 17:24:16 +0800 | [diff] [blame] | 674 | if (create->cr_acl != NULL) |
| 675 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, |
| 676 | create->cr_bmval); |
| 677 | |
| 678 | fh_unlock(&cstate->current_fh); |
| 679 | set_change_info(&create->cr_cinfo, &cstate->current_fh); |
| 680 | fh_dup2(&cstate->current_fh, &resfh); |
| 681 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | fh_put(&resfh); |
J. Bruce Fields | 880a3a5 | 2018-03-21 17:19:02 -0400 | [diff] [blame] | 683 | out_umask: |
| 684 | current->fs->umask = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | return status; |
| 686 | } |
| 687 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 688 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 689 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 690 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 692 | struct nfsd4_getattr *getattr = &u->getattr; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 693 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 695 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | if (status) |
| 697 | return status; |
| 698 | |
| 699 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) |
| 700 | return nfserr_inval; |
| 701 | |
J. Bruce Fields | 916d2d8 | 2016-10-18 14:18:40 -0400 | [diff] [blame] | 702 | getattr->ga_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0]; |
| 703 | getattr->ga_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1]; |
| 704 | getattr->ga_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 706 | getattr->ga_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | return nfs_ok; |
| 708 | } |
| 709 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 710 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 711 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 712 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 714 | struct nfsd4_link *link = &u->link; |
J. Bruce Fields | 9542446 | 2017-09-15 16:02:52 -0400 | [diff] [blame] | 715 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 717 | status = nfsd_link(rqstp, &cstate->current_fh, |
| 718 | link->li_name, link->li_namelen, &cstate->save_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | if (!status) |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 720 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | return status; |
| 722 | } |
| 723 | |
J. Bruce Fields | 0ff7ab4 | 2010-12-16 10:06:27 -0500 | [diff] [blame] | 724 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | { |
| 726 | struct svc_fh tmp_fh; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 727 | __be32 ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | |
| 729 | fh_init(&tmp_fh, NFS4_FHSIZE); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 730 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
| 731 | if (ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | return ret; |
J. Bruce Fields | 0ff7ab4 | 2010-12-16 10:06:27 -0500 | [diff] [blame] | 733 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | fh_put(&tmp_fh); |
| 735 | return nfserr_noent; |
| 736 | } |
| 737 | fh_put(&tmp_fh); |
J. Bruce Fields | 0ff7ab4 | 2010-12-16 10:06:27 -0500 | [diff] [blame] | 738 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
| 739 | } |
| 740 | |
| 741 | static __be32 |
| 742 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 743 | union nfsd4_op_u *u) |
J. Bruce Fields | 0ff7ab4 | 2010-12-16 10:06:27 -0500 | [diff] [blame] | 744 | { |
| 745 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | } |
| 747 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 748 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 749 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 750 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 752 | return nfsd_lookup(rqstp, &cstate->current_fh, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 753 | u->lookup.lo_name, u->lookup.lo_len, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 754 | &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | } |
| 756 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 757 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 758 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 759 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 761 | struct nfsd4_read *read = &u->read; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 762 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
NeilBrown | 7e06b7f | 2005-06-23 22:03:13 -0700 | [diff] [blame] | 764 | read->rd_filp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | if (read->rd_offset >= OFFSET_MAX) |
| 766 | return nfserr_inval; |
| 767 | |
Chuck Lever | 87c5942 | 2018-03-28 13:29:11 -0400 | [diff] [blame] | 768 | trace_nfsd_read_start(rqstp, &cstate->current_fh, |
| 769 | read->rd_offset, read->rd_length); |
| 770 | |
J. Bruce Fields | 9b3234b | 2012-12-04 18:03:46 -0500 | [diff] [blame] | 771 | /* |
| 772 | * If we do a zero copy read, then a client will see read data |
| 773 | * that reflects the state of the file *after* performing the |
| 774 | * following compound. |
| 775 | * |
| 776 | * To ensure proper ordering, we therefore turn off zero copy if |
| 777 | * the client wants us to do more in this compound: |
| 778 | */ |
| 779 | if (!nfsd4_last_compound_op(rqstp)) |
Jeff Layton | 779fb0f | 2014-11-19 07:51:18 -0500 | [diff] [blame] | 780 | clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); |
J. Bruce Fields | 9b3234b | 2012-12-04 18:03:46 -0500 | [diff] [blame] | 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | /* check stateid */ |
Anna Schumaker | aa0d6ae | 2015-12-03 12:59:51 +0100 | [diff] [blame] | 783 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
| 784 | &read->rd_stateid, RD_STATE, |
| 785 | &read->rd_filp, &read->rd_tmp_file); |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 786 | if (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
| 788 | goto out; |
| 789 | } |
| 790 | status = nfs_ok; |
| 791 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | read->rd_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 793 | read->rd_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | return status; |
| 795 | } |
| 796 | |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 797 | |
| 798 | static void |
| 799 | nfsd4_read_release(union nfsd4_op_u *u) |
| 800 | { |
| 801 | if (u->read.rd_filp) |
| 802 | fput(u->read.rd_filp); |
Chuck Lever | 87c5942 | 2018-03-28 13:29:11 -0400 | [diff] [blame] | 803 | trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, |
| 804 | u->read.rd_offset, u->read.rd_length); |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 805 | } |
| 806 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 807 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 808 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 809 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 811 | struct nfsd4_readdir *readdir = &u->readdir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | u64 cookie = readdir->rd_cookie; |
| 813 | static const nfs4_verifier zeroverf; |
| 814 | |
| 815 | /* no need to check permission - this will be done in nfsd_readdir() */ |
| 816 | |
| 817 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) |
| 818 | return nfserr_inval; |
| 819 | |
J. Bruce Fields | 916d2d8 | 2016-10-18 14:18:40 -0400 | [diff] [blame] | 820 | readdir->rd_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0]; |
| 821 | readdir->rd_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1]; |
| 822 | readdir->rd_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | |
Bernd Schubert | 832023b | 2011-08-08 17:38:08 +0200 | [diff] [blame] | 824 | if ((cookie == 1) || (cookie == 2) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
| 826 | return nfserr_bad_cookie; |
| 827 | |
| 828 | readdir->rd_rqstp = rqstp; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 829 | readdir->rd_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | return nfs_ok; |
| 831 | } |
| 832 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 833 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 834 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 835 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 837 | u->readlink.rl_rqstp = rqstp; |
| 838 | u->readlink.rl_fhp = &cstate->current_fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | return nfs_ok; |
| 840 | } |
| 841 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 842 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 843 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 844 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 846 | struct nfsd4_remove *remove = &u->remove; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 847 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | |
J. Bruce Fields | c87fb4a | 2015-08-06 12:47:02 -0400 | [diff] [blame] | 849 | if (opens_in_grace(SVC_NET(rqstp))) |
NeilBrown | c815afc | 2005-06-23 22:03:00 -0700 | [diff] [blame] | 850 | return nfserr_grace; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 851 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
| 852 | remove->rm_name, remove->rm_namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | if (!status) { |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 854 | fh_unlock(&cstate->current_fh); |
| 855 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | } |
| 857 | return status; |
| 858 | } |
| 859 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 860 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 861 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 862 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 864 | struct nfsd4_rename *rename = &u->rename; |
J. Bruce Fields | 9542446 | 2017-09-15 16:02:52 -0400 | [diff] [blame] | 865 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
J. Bruce Fields | f8f71d0 | 2018-11-06 11:47:20 -0500 | [diff] [blame] | 867 | if (opens_in_grace(SVC_NET(rqstp))) |
NeilBrown | c815afc | 2005-06-23 22:03:00 -0700 | [diff] [blame] | 868 | return nfserr_grace; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 869 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
| 870 | rename->rn_snamelen, &cstate->current_fh, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | rename->rn_tname, rename->rn_tnamelen); |
J. Bruce Fields | 2a6cf94 | 2013-04-30 15:28:51 -0400 | [diff] [blame] | 872 | if (status) |
| 873 | return status; |
| 874 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
| 875 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); |
| 876 | return nfs_ok; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | } |
| 878 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 879 | static __be32 |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 880 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 881 | union nfsd4_op_u *u) |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 882 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 883 | struct nfsd4_secinfo *secinfo = &u->secinfo; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 884 | struct svc_export *exp; |
| 885 | struct dentry *dentry; |
| 886 | __be32 err; |
| 887 | |
J. Bruce Fields | 29a78a3 | 2011-04-09 11:28:53 -0400 | [diff] [blame] | 888 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
| 889 | if (err) |
| 890 | return err; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 891 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
| 892 | secinfo->si_name, secinfo->si_namelen, |
| 893 | &exp, &dentry); |
| 894 | if (err) |
| 895 | return err; |
J. Bruce Fields | 2f6fc05 | 2016-03-02 16:36:21 -0800 | [diff] [blame] | 896 | fh_unlock(&cstate->current_fh); |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 897 | if (d_really_is_negative(dentry)) { |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 898 | exp_put(exp); |
| 899 | err = nfserr_noent; |
| 900 | } else |
| 901 | secinfo->si_exp = exp; |
| 902 | dput(dentry); |
J. Bruce Fields | 56560b9 | 2010-12-16 09:57:15 -0500 | [diff] [blame] | 903 | if (cstate->minorversion) |
| 904 | /* See rfc 5661 section 2.6.3.1.1.8 */ |
| 905 | fh_put(&cstate->current_fh); |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 906 | return err; |
| 907 | } |
| 908 | |
| 909 | static __be32 |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 910 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 911 | union nfsd4_op_u *u) |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 912 | { |
| 913 | __be32 err; |
| 914 | |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 915 | switch (u->secinfo_no_name.sin_style) { |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 916 | case NFS4_SECINFO_STYLE4_CURRENT_FH: |
| 917 | break; |
| 918 | case NFS4_SECINFO_STYLE4_PARENT: |
| 919 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); |
| 920 | if (err) |
| 921 | return err; |
| 922 | break; |
| 923 | default: |
| 924 | return nfserr_inval; |
| 925 | } |
Kinglong Mee | bf18f16 | 2014-06-10 22:06:44 +0800 | [diff] [blame] | 926 | |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 927 | u->secinfo_no_name.sin_exp = exp_get(cstate->current_fh.fh_export); |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 928 | fh_put(&cstate->current_fh); |
| 929 | return nfs_ok; |
| 930 | } |
| 931 | |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 932 | static void |
| 933 | nfsd4_secinfo_release(union nfsd4_op_u *u) |
| 934 | { |
| 935 | if (u->secinfo.si_exp) |
| 936 | exp_put(u->secinfo.si_exp); |
| 937 | } |
| 938 | |
Eryu Guan | ec572b9 | 2017-09-29 15:01:10 +0800 | [diff] [blame] | 939 | static void |
| 940 | nfsd4_secinfo_no_name_release(union nfsd4_op_u *u) |
| 941 | { |
| 942 | if (u->secinfo_no_name.sin_exp) |
| 943 | exp_put(u->secinfo_no_name.sin_exp); |
| 944 | } |
| 945 | |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 946 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 947 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 948 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 950 | struct nfsd4_setattr *setattr = &u->setattr; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 951 | __be32 status = nfs_ok; |
Al Viro | 96f6f98 | 2012-04-12 23:47:00 -0400 | [diff] [blame] | 952 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 955 | status = nfs4_preprocess_stateid_op(rqstp, cstate, |
Anna Schumaker | aa0d6ae | 2015-12-03 12:59:51 +0100 | [diff] [blame] | 956 | &cstate->current_fh, &setattr->sa_stateid, |
| 957 | WR_STATE, NULL, NULL); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 958 | if (status) { |
Greg Banks | 3e3b480 | 2006-10-02 02:17:41 -0700 | [diff] [blame] | 959 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 960 | return status; |
| 961 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | } |
Al Viro | 96f6f98 | 2012-04-12 23:47:00 -0400 | [diff] [blame] | 963 | err = fh_want_write(&cstate->current_fh); |
| 964 | if (err) |
| 965 | return nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | status = nfs_ok; |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 967 | |
| 968 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, |
| 969 | nfsd_attrmask); |
| 970 | if (status) |
| 971 | goto out; |
| 972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | if (setattr->sa_acl != NULL) |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 974 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
| 975 | setattr->sa_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | if (status) |
Dave Hansen | 18f335a | 2008-02-15 14:37:38 -0800 | [diff] [blame] | 977 | goto out; |
David Quigley | 18032ca | 2013-05-02 13:19:10 -0400 | [diff] [blame] | 978 | if (setattr->sa_label.len) |
| 979 | status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh, |
| 980 | &setattr->sa_label); |
| 981 | if (status) |
| 982 | goto out; |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 983 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | 0, (time_t)0); |
Dave Hansen | 18f335a | 2008-02-15 14:37:38 -0800 | [diff] [blame] | 985 | out: |
Al Viro | bad0dcf | 2011-11-23 12:03:18 -0500 | [diff] [blame] | 986 | fh_drop_write(&cstate->current_fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | return status; |
| 988 | } |
| 989 | |
J.Bruce Fields | 7191155 | 2006-12-13 00:35:29 -0800 | [diff] [blame] | 990 | static __be32 |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 991 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 992 | union nfsd4_op_u *u) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 994 | struct nfsd4_write *write = &u->write; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | stateid_t *stateid = &write->wr_stateid; |
| 996 | struct file *filp = NULL; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 997 | __be32 status = nfs_ok; |
David Shaw | 31dec25 | 2009-03-05 20:16:14 -0500 | [diff] [blame] | 998 | unsigned long cnt; |
J. Bruce Fields | ffe1137 | 2012-11-15 14:52:19 -0500 | [diff] [blame] | 999 | int nvecs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | if (write->wr_offset >= OFFSET_MAX) |
| 1002 | return nfserr_inval; |
| 1003 | |
Chuck Lever | d890be1 | 2018-03-27 10:53:27 -0400 | [diff] [blame] | 1004 | cnt = write->wr_buflen; |
| 1005 | trace_nfsd_write_start(rqstp, &cstate->current_fh, |
| 1006 | write->wr_offset, cnt); |
Anna Schumaker | aa0d6ae | 2015-12-03 12:59:51 +0100 | [diff] [blame] | 1007 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
| 1008 | stateid, WR_STATE, &filp, NULL); |
J. Bruce Fields | 375c554 | 2006-01-18 17:43:33 -0800 | [diff] [blame] | 1009 | if (status) { |
| 1010 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); |
| 1011 | return status; |
| 1012 | } |
| 1013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | write->wr_how_written = write->wr_stable_how; |
Stanislav Kinsbursky | b9c0ef8 | 2012-12-06 14:23:19 +0300 | [diff] [blame] | 1015 | gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
Chuck Lever | 3fd9557 | 2018-07-27 11:19:05 -0400 | [diff] [blame] | 1017 | nvecs = svc_fill_write_vector(rqstp, write->wr_pagelist, |
| 1018 | &write->wr_head, write->wr_buflen); |
J. Bruce Fields | ffe1137 | 2012-11-15 14:52:19 -0500 | [diff] [blame] | 1019 | WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec)); |
| 1020 | |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 1021 | status = nfsd_vfs_write(rqstp, &cstate->current_fh, filp, |
| 1022 | write->wr_offset, rqstp->rq_vec, nvecs, &cnt, |
Kinglong Mee | 54bbb7d | 2016-12-31 20:59:53 +0800 | [diff] [blame] | 1023 | write->wr_how_written); |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 1024 | fput(filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | |
David Shaw | 31dec25 | 2009-03-05 20:16:14 -0500 | [diff] [blame] | 1026 | write->wr_bytes_written = cnt; |
Chuck Lever | d890be1 | 2018-03-27 10:53:27 -0400 | [diff] [blame] | 1027 | trace_nfsd_write_done(rqstp, &cstate->current_fh, |
| 1028 | write->wr_offset, cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | } |
| 1031 | |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 1032 | static __be32 |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1033 | nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 1034 | stateid_t *src_stateid, struct file **src, |
| 1035 | stateid_t *dst_stateid, struct file **dst) |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1036 | { |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1037 | __be32 status; |
| 1038 | |
Scott Mayhew | 01310bb | 2018-11-08 11:11:36 -0500 | [diff] [blame] | 1039 | if (!cstate->save_fh.fh_dentry) |
| 1040 | return nfserr_nofilehandle; |
| 1041 | |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1042 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh, |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1043 | src_stateid, RD_STATE, src, NULL); |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1044 | if (status) { |
| 1045 | dprintk("NFSD: %s: couldn't process src stateid!\n", __func__); |
| 1046 | goto out; |
| 1047 | } |
| 1048 | |
| 1049 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1050 | dst_stateid, WR_STATE, dst, NULL); |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1051 | if (status) { |
| 1052 | dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__); |
| 1053 | goto out_put_src; |
| 1054 | } |
| 1055 | |
| 1056 | /* fix up for NFS-specific error code */ |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1057 | if (!S_ISREG(file_inode(*src)->i_mode) || |
| 1058 | !S_ISREG(file_inode(*dst)->i_mode)) { |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1059 | status = nfserr_wrong_type; |
| 1060 | goto out_put_dst; |
| 1061 | } |
| 1062 | |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1063 | out: |
| 1064 | return status; |
| 1065 | out_put_dst: |
| 1066 | fput(*dst); |
| 1067 | out_put_src: |
| 1068 | fput(*src); |
| 1069 | goto out; |
| 1070 | } |
| 1071 | |
| 1072 | static __be32 |
| 1073 | nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1074 | union nfsd4_op_u *u) |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1075 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1076 | struct nfsd4_clone *clone = &u->clone; |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1077 | struct file *src, *dst; |
| 1078 | __be32 status; |
| 1079 | |
| 1080 | status = nfsd4_verify_copy(rqstp, cstate, &clone->cl_src_stateid, &src, |
| 1081 | &clone->cl_dst_stateid, &dst); |
| 1082 | if (status) |
| 1083 | goto out; |
| 1084 | |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1085 | status = nfsd4_clone_file_range(src, clone->cl_src_pos, |
| 1086 | dst, clone->cl_dst_pos, clone->cl_count); |
| 1087 | |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1088 | fput(dst); |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1089 | fput(src); |
| 1090 | out: |
| 1091 | return status; |
| 1092 | } |
| 1093 | |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1094 | void nfs4_put_copy(struct nfsd4_copy *copy) |
| 1095 | { |
| 1096 | if (!refcount_dec_and_test(©->refcount)) |
| 1097 | return; |
| 1098 | kfree(copy); |
| 1099 | } |
| 1100 | |
| 1101 | static bool |
| 1102 | check_and_set_stop_copy(struct nfsd4_copy *copy) |
| 1103 | { |
| 1104 | bool value; |
| 1105 | |
| 1106 | spin_lock(©->cp_clp->async_lock); |
| 1107 | value = copy->stopped; |
| 1108 | if (!copy->stopped) |
| 1109 | copy->stopped = true; |
| 1110 | spin_unlock(©->cp_clp->async_lock); |
| 1111 | return value; |
| 1112 | } |
| 1113 | |
| 1114 | static void nfsd4_stop_copy(struct nfsd4_copy *copy) |
| 1115 | { |
| 1116 | /* only 1 thread should stop the copy */ |
| 1117 | if (!check_and_set_stop_copy(copy)) |
| 1118 | kthread_stop(copy->copy_task); |
| 1119 | nfs4_put_copy(copy); |
| 1120 | } |
| 1121 | |
| 1122 | static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp) |
| 1123 | { |
| 1124 | struct nfsd4_copy *copy = NULL; |
| 1125 | |
| 1126 | spin_lock(&clp->async_lock); |
| 1127 | if (!list_empty(&clp->async_copies)) { |
| 1128 | copy = list_first_entry(&clp->async_copies, struct nfsd4_copy, |
| 1129 | copies); |
| 1130 | refcount_inc(©->refcount); |
| 1131 | } |
| 1132 | spin_unlock(&clp->async_lock); |
| 1133 | return copy; |
| 1134 | } |
| 1135 | |
| 1136 | void nfsd4_shutdown_copy(struct nfs4_client *clp) |
| 1137 | { |
| 1138 | struct nfsd4_copy *copy; |
| 1139 | |
| 1140 | while ((copy = nfsd4_get_copy(clp)) != NULL) |
| 1141 | nfsd4_stop_copy(copy); |
| 1142 | } |
| 1143 | |
| 1144 | static void nfsd4_cb_offload_release(struct nfsd4_callback *cb) |
| 1145 | { |
| 1146 | struct nfsd4_copy *copy = container_of(cb, struct nfsd4_copy, cp_cb); |
| 1147 | |
| 1148 | nfs4_put_copy(copy); |
| 1149 | } |
| 1150 | |
| 1151 | static int nfsd4_cb_offload_done(struct nfsd4_callback *cb, |
| 1152 | struct rpc_task *task) |
| 1153 | { |
| 1154 | return 1; |
| 1155 | } |
| 1156 | |
| 1157 | static const struct nfsd4_callback_ops nfsd4_cb_offload_ops = { |
| 1158 | .release = nfsd4_cb_offload_release, |
| 1159 | .done = nfsd4_cb_offload_done |
| 1160 | }; |
| 1161 | |
| 1162 | static void nfsd4_init_copy_res(struct nfsd4_copy *copy, bool sync) |
| 1163 | { |
| 1164 | copy->cp_res.wr_stable_how = NFS_UNSTABLE; |
| 1165 | copy->cp_synchronous = sync; |
| 1166 | gen_boot_verifier(©->cp_res.wr_verifier, copy->cp_clp->net); |
| 1167 | } |
| 1168 | |
| 1169 | static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy) |
| 1170 | { |
| 1171 | ssize_t bytes_copied = 0; |
| 1172 | size_t bytes_total = copy->cp_count; |
| 1173 | u64 src_pos = copy->cp_src_pos; |
| 1174 | u64 dst_pos = copy->cp_dst_pos; |
| 1175 | |
| 1176 | do { |
| 1177 | if (kthread_should_stop()) |
| 1178 | break; |
| 1179 | bytes_copied = nfsd_copy_file_range(copy->file_src, src_pos, |
| 1180 | copy->file_dst, dst_pos, bytes_total); |
| 1181 | if (bytes_copied <= 0) |
| 1182 | break; |
| 1183 | bytes_total -= bytes_copied; |
| 1184 | copy->cp_res.wr_bytes_written += bytes_copied; |
| 1185 | src_pos += bytes_copied; |
| 1186 | dst_pos += bytes_copied; |
| 1187 | } while (bytes_total > 0 && !copy->cp_synchronous); |
| 1188 | return bytes_copied; |
| 1189 | } |
| 1190 | |
| 1191 | static __be32 nfsd4_do_copy(struct nfsd4_copy *copy, bool sync) |
| 1192 | { |
| 1193 | __be32 status; |
| 1194 | ssize_t bytes; |
| 1195 | |
| 1196 | bytes = _nfsd_copy_file_range(copy); |
| 1197 | /* for async copy, we ignore the error, client can always retry |
| 1198 | * to get the error |
| 1199 | */ |
| 1200 | if (bytes < 0 && !copy->cp_res.wr_bytes_written) |
| 1201 | status = nfserrno(bytes); |
| 1202 | else { |
| 1203 | nfsd4_init_copy_res(copy, sync); |
| 1204 | status = nfs_ok; |
| 1205 | } |
| 1206 | |
| 1207 | fput(copy->file_src); |
| 1208 | fput(copy->file_dst); |
| 1209 | return status; |
| 1210 | } |
| 1211 | |
| 1212 | static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) |
| 1213 | { |
| 1214 | dst->cp_src_pos = src->cp_src_pos; |
| 1215 | dst->cp_dst_pos = src->cp_dst_pos; |
| 1216 | dst->cp_count = src->cp_count; |
| 1217 | dst->cp_synchronous = src->cp_synchronous; |
| 1218 | memcpy(&dst->cp_res, &src->cp_res, sizeof(src->cp_res)); |
| 1219 | memcpy(&dst->fh, &src->fh, sizeof(src->fh)); |
| 1220 | dst->cp_clp = src->cp_clp; |
| 1221 | dst->file_dst = get_file(src->file_dst); |
| 1222 | dst->file_src = get_file(src->file_src); |
| 1223 | memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid)); |
| 1224 | } |
| 1225 | |
| 1226 | static void cleanup_async_copy(struct nfsd4_copy *copy) |
| 1227 | { |
| 1228 | nfs4_free_cp_state(copy); |
| 1229 | fput(copy->file_dst); |
| 1230 | fput(copy->file_src); |
| 1231 | spin_lock(©->cp_clp->async_lock); |
| 1232 | list_del(©->copies); |
| 1233 | spin_unlock(©->cp_clp->async_lock); |
| 1234 | nfs4_put_copy(copy); |
| 1235 | } |
| 1236 | |
| 1237 | static int nfsd4_do_async_copy(void *data) |
| 1238 | { |
| 1239 | struct nfsd4_copy *copy = (struct nfsd4_copy *)data; |
| 1240 | struct nfsd4_copy *cb_copy; |
| 1241 | |
| 1242 | copy->nfserr = nfsd4_do_copy(copy, 0); |
| 1243 | cb_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); |
| 1244 | if (!cb_copy) |
| 1245 | goto out; |
| 1246 | memcpy(&cb_copy->cp_res, ©->cp_res, sizeof(copy->cp_res)); |
| 1247 | cb_copy->cp_clp = copy->cp_clp; |
| 1248 | cb_copy->nfserr = copy->nfserr; |
| 1249 | memcpy(&cb_copy->fh, ©->fh, sizeof(copy->fh)); |
| 1250 | nfsd4_init_cb(&cb_copy->cp_cb, cb_copy->cp_clp, |
| 1251 | &nfsd4_cb_offload_ops, NFSPROC4_CLNT_CB_OFFLOAD); |
| 1252 | nfsd4_run_cb(&cb_copy->cp_cb); |
| 1253 | out: |
| 1254 | cleanup_async_copy(copy); |
| 1255 | return 0; |
| 1256 | } |
| 1257 | |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 1258 | static __be32 |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1259 | nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1260 | union nfsd4_op_u *u) |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1261 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1262 | struct nfsd4_copy *copy = &u->copy; |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1263 | __be32 status; |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1264 | struct nfsd4_copy *async_copy = NULL; |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1265 | |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1266 | status = nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid, |
| 1267 | ©->file_src, ©->cp_dst_stateid, |
| 1268 | ©->file_dst); |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1269 | if (status) |
| 1270 | goto out; |
| 1271 | |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1272 | copy->cp_clp = cstate->clp; |
| 1273 | memcpy(©->fh, &cstate->current_fh.fh_handle, |
| 1274 | sizeof(struct knfsd_fh)); |
| 1275 | if (!copy->cp_synchronous) { |
| 1276 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1277 | |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1278 | status = nfserrno(-ENOMEM); |
| 1279 | async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); |
| 1280 | if (!async_copy) |
| 1281 | goto out; |
| 1282 | if (!nfs4_init_cp_state(nn, copy)) { |
| 1283 | kfree(async_copy); |
| 1284 | goto out; |
| 1285 | } |
| 1286 | refcount_set(&async_copy->refcount, 1); |
| 1287 | memcpy(©->cp_res.cb_stateid, ©->cp_stateid, |
| 1288 | sizeof(copy->cp_stateid)); |
| 1289 | dup_copy_fields(copy, async_copy); |
| 1290 | async_copy->copy_task = kthread_create(nfsd4_do_async_copy, |
| 1291 | async_copy, "%s", "copy thread"); |
| 1292 | if (IS_ERR(async_copy->copy_task)) |
| 1293 | goto out_err; |
| 1294 | spin_lock(&async_copy->cp_clp->async_lock); |
| 1295 | list_add(&async_copy->copies, |
| 1296 | &async_copy->cp_clp->async_copies); |
| 1297 | spin_unlock(&async_copy->cp_clp->async_lock); |
| 1298 | wake_up_process(async_copy->copy_task); |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1299 | status = nfs_ok; |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1300 | } else |
| 1301 | status = nfsd4_do_copy(copy, 1); |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1302 | out: |
| 1303 | return status; |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1304 | out_err: |
| 1305 | cleanup_async_copy(async_copy); |
| 1306 | goto out; |
| 1307 | } |
| 1308 | |
| 1309 | struct nfsd4_copy * |
| 1310 | find_async_copy(struct nfs4_client *clp, stateid_t *stateid) |
| 1311 | { |
| 1312 | struct nfsd4_copy *copy; |
| 1313 | |
| 1314 | spin_lock(&clp->async_lock); |
| 1315 | list_for_each_entry(copy, &clp->async_copies, copies) { |
| 1316 | if (memcmp(©->cp_stateid, stateid, NFS4_STATEID_SIZE)) |
| 1317 | continue; |
| 1318 | refcount_inc(©->refcount); |
| 1319 | spin_unlock(&clp->async_lock); |
| 1320 | return copy; |
| 1321 | } |
| 1322 | spin_unlock(&clp->async_lock); |
| 1323 | return NULL; |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 1324 | } |
| 1325 | |
| 1326 | static __be32 |
Olga Kornievskaia | 885e2bf | 2018-07-20 18:19:19 -0400 | [diff] [blame] | 1327 | nfsd4_offload_cancel(struct svc_rqst *rqstp, |
| 1328 | struct nfsd4_compound_state *cstate, |
| 1329 | union nfsd4_op_u *u) |
| 1330 | { |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1331 | struct nfsd4_offload_status *os = &u->offload_status; |
| 1332 | __be32 status = 0; |
| 1333 | struct nfsd4_copy *copy; |
| 1334 | struct nfs4_client *clp = cstate->clp; |
| 1335 | |
| 1336 | copy = find_async_copy(clp, &os->stateid); |
| 1337 | if (copy) |
| 1338 | nfsd4_stop_copy(copy); |
| 1339 | else |
| 1340 | status = nfserr_bad_stateid; |
| 1341 | |
| 1342 | return status; |
Olga Kornievskaia | 885e2bf | 2018-07-20 18:19:19 -0400 | [diff] [blame] | 1343 | } |
| 1344 | |
| 1345 | static __be32 |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1346 | nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
| 1347 | struct nfsd4_fallocate *fallocate, int flags) |
| 1348 | { |
J. Bruce Fields | 0d4d672 | 2018-11-06 17:44:03 -0500 | [diff] [blame] | 1349 | __be32 status; |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1350 | struct file *file; |
| 1351 | |
Anna Schumaker | aa0d6ae | 2015-12-03 12:59:51 +0100 | [diff] [blame] | 1352 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1353 | &fallocate->falloc_stateid, |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 1354 | WR_STATE, &file, NULL); |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1355 | if (status != nfs_ok) { |
| 1356 | dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); |
| 1357 | return status; |
| 1358 | } |
| 1359 | |
| 1360 | status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file, |
| 1361 | fallocate->falloc_offset, |
| 1362 | fallocate->falloc_length, |
| 1363 | flags); |
| 1364 | fput(file); |
| 1365 | return status; |
| 1366 | } |
Olga Kornievskaia | 6308bc9 | 2018-07-20 18:19:18 -0400 | [diff] [blame] | 1367 | static __be32 |
| 1368 | nfsd4_offload_status(struct svc_rqst *rqstp, |
| 1369 | struct nfsd4_compound_state *cstate, |
| 1370 | union nfsd4_op_u *u) |
| 1371 | { |
Olga Kornievskaia | e0639dc | 2018-07-20 18:19:20 -0400 | [diff] [blame] | 1372 | struct nfsd4_offload_status *os = &u->offload_status; |
| 1373 | __be32 status = 0; |
| 1374 | struct nfsd4_copy *copy; |
| 1375 | struct nfs4_client *clp = cstate->clp; |
| 1376 | |
| 1377 | copy = find_async_copy(clp, &os->stateid); |
| 1378 | if (copy) { |
| 1379 | os->count = copy->cp_res.wr_bytes_written; |
| 1380 | nfs4_put_copy(copy); |
| 1381 | } else |
| 1382 | status = nfserr_bad_stateid; |
| 1383 | |
| 1384 | return status; |
Olga Kornievskaia | 6308bc9 | 2018-07-20 18:19:18 -0400 | [diff] [blame] | 1385 | } |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1386 | |
| 1387 | static __be32 |
| 1388 | nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1389 | union nfsd4_op_u *u) |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1390 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1391 | return nfsd4_fallocate(rqstp, cstate, &u->allocate, 0); |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 1392 | } |
| 1393 | |
| 1394 | static __be32 |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 1395 | nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1396 | union nfsd4_op_u *u) |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 1397 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1398 | return nfsd4_fallocate(rqstp, cstate, &u->deallocate, |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 1399 | FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE); |
| 1400 | } |
| 1401 | |
| 1402 | static __be32 |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 1403 | nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1404 | union nfsd4_op_u *u) |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 1405 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1406 | struct nfsd4_seek *seek = &u->seek; |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 1407 | int whence; |
| 1408 | __be32 status; |
| 1409 | struct file *file; |
| 1410 | |
Anna Schumaker | aa0d6ae | 2015-12-03 12:59:51 +0100 | [diff] [blame] | 1411 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 1412 | &seek->seek_stateid, |
Christoph Hellwig | af90f70 | 2015-06-18 16:45:00 +0200 | [diff] [blame] | 1413 | RD_STATE, &file, NULL); |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 1414 | if (status) { |
| 1415 | dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); |
| 1416 | return status; |
| 1417 | } |
| 1418 | |
| 1419 | switch (seek->seek_whence) { |
| 1420 | case NFS4_CONTENT_DATA: |
| 1421 | whence = SEEK_DATA; |
| 1422 | break; |
| 1423 | case NFS4_CONTENT_HOLE: |
| 1424 | whence = SEEK_HOLE; |
| 1425 | break; |
| 1426 | default: |
| 1427 | status = nfserr_union_notsupp; |
| 1428 | goto out; |
| 1429 | } |
| 1430 | |
| 1431 | /* |
| 1432 | * Note: This call does change file->f_pos, but nothing in NFSD |
| 1433 | * should ever file->f_pos. |
| 1434 | */ |
| 1435 | seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence); |
| 1436 | if (seek->seek_pos < 0) |
| 1437 | status = nfserrno(seek->seek_pos); |
| 1438 | else if (seek->seek_pos >= i_size_read(file_inode(file))) |
| 1439 | seek->seek_eof = true; |
| 1440 | |
| 1441 | out: |
| 1442 | fput(file); |
| 1443 | return status; |
| 1444 | } |
| 1445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | /* This routine never returns NFS_OK! If there are no other errors, it |
| 1447 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the |
| 1448 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME |
| 1449 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. |
| 1450 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1451 | static __be32 |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 1452 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 1453 | struct nfsd4_verify *verify) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1455 | __be32 *buf, *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | int count; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1457 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | |
Miklos Szeredi | 8837abc | 2008-06-16 13:20:29 +0200 | [diff] [blame] | 1459 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | if (status) |
| 1461 | return status; |
| 1462 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 1463 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
| 1464 | if (status) |
| 1465 | return status; |
| 1466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
| 1468 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) |
| 1469 | return nfserr_inval; |
| 1470 | if (verify->ve_attrlen & 3) |
| 1471 | return nfserr_inval; |
| 1472 | |
| 1473 | /* count in words: |
| 1474 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 |
| 1475 | */ |
| 1476 | count = 4 + (verify->ve_attrlen >> 2); |
| 1477 | buf = kmalloc(count << 2, GFP_KERNEL); |
| 1478 | if (!buf) |
J. Bruce Fields | 3e77246 | 2011-08-10 19:07:33 -0400 | [diff] [blame] | 1479 | return nfserr_jukebox; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | |
J. Bruce Fields | 84822d0 | 2012-12-14 17:57:50 -0500 | [diff] [blame] | 1481 | p = buf; |
J. Bruce Fields | d518465 | 2013-08-26 16:04:46 -0400 | [diff] [blame] | 1482 | status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh, |
J.Bruce Fields | ca36431 | 2006-12-13 00:35:27 -0800 | [diff] [blame] | 1483 | cstate->current_fh.fh_export, |
J. Bruce Fields | d518465 | 2013-08-26 16:04:46 -0400 | [diff] [blame] | 1484 | cstate->current_fh.fh_dentry, |
| 1485 | verify->ve_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 1486 | rqstp, 0); |
J. Bruce Fields | 41ae6e71 | 2013-08-21 15:32:50 -0400 | [diff] [blame] | 1487 | /* |
| 1488 | * If nfsd4_encode_fattr() ran out of space, assume that's because |
| 1489 | * the attributes are longer (hence different) than those given: |
| 1490 | */ |
J. Bruce Fields | 84822d0 | 2012-12-14 17:57:50 -0500 | [diff] [blame] | 1491 | if (status == nfserr_resource) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | status = nfserr_not_same; |
| 1493 | if (status) |
| 1494 | goto out_kfree; |
| 1495 | |
Benny Halevy | 95ec28c | 2009-04-03 08:29:08 +0300 | [diff] [blame] | 1496 | /* skip bitmap */ |
| 1497 | p = buf + 1 + ntohl(buf[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | status = nfserr_not_same; |
| 1499 | if (ntohl(*p++) != verify->ve_attrlen) |
| 1500 | goto out_kfree; |
| 1501 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) |
| 1502 | status = nfserr_same; |
| 1503 | |
| 1504 | out_kfree: |
| 1505 | kfree(buf); |
| 1506 | return status; |
| 1507 | } |
| 1508 | |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 1509 | static __be32 |
| 1510 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1511 | union nfsd4_op_u *u) |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 1512 | { |
| 1513 | __be32 status; |
| 1514 | |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1515 | status = _nfsd4_verify(rqstp, cstate, &u->verify); |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 1516 | return status == nfserr_not_same ? nfs_ok : status; |
| 1517 | } |
| 1518 | |
| 1519 | static __be32 |
| 1520 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1521 | union nfsd4_op_u *u) |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 1522 | { |
| 1523 | __be32 status; |
| 1524 | |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1525 | status = _nfsd4_verify(rqstp, cstate, &u->nverify); |
J.Bruce Fields | c954e2a | 2006-12-13 00:35:31 -0800 | [diff] [blame] | 1526 | return status == nfserr_same ? nfs_ok : status; |
| 1527 | } |
| 1528 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1529 | #ifdef CONFIG_NFSD_PNFS |
| 1530 | static const struct nfsd4_layout_ops * |
| 1531 | nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type) |
| 1532 | { |
Jeff Layton | 8a4c392 | 2016-07-10 15:55:58 -0400 | [diff] [blame] | 1533 | if (!exp->ex_layout_types) { |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1534 | dprintk("%s: export does not support pNFS\n", __func__); |
| 1535 | return NULL; |
| 1536 | } |
| 1537 | |
Ari Kauppi | b550a32 | 2017-05-05 16:07:55 -0400 | [diff] [blame] | 1538 | if (layout_type >= LAYOUT_TYPE_MAX || |
| 1539 | !(exp->ex_layout_types & (1 << layout_type))) { |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1540 | dprintk("%s: layout type %d not supported\n", |
| 1541 | __func__, layout_type); |
| 1542 | return NULL; |
| 1543 | } |
| 1544 | |
| 1545 | return nfsd4_layout_ops[layout_type]; |
| 1546 | } |
| 1547 | |
| 1548 | static __be32 |
| 1549 | nfsd4_getdeviceinfo(struct svc_rqst *rqstp, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1550 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1551 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1552 | struct nfsd4_getdeviceinfo *gdp = &u->getdeviceinfo; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1553 | const struct nfsd4_layout_ops *ops; |
| 1554 | struct nfsd4_deviceid_map *map; |
| 1555 | struct svc_export *exp; |
| 1556 | __be32 nfserr; |
| 1557 | |
| 1558 | dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n", |
| 1559 | __func__, |
| 1560 | gdp->gd_layout_type, |
| 1561 | gdp->gd_devid.fsid_idx, gdp->gd_devid.generation, |
| 1562 | gdp->gd_maxcount); |
| 1563 | |
| 1564 | map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx); |
| 1565 | if (!map) { |
| 1566 | dprintk("%s: couldn't find device ID to export mapping!\n", |
| 1567 | __func__); |
| 1568 | return nfserr_noent; |
| 1569 | } |
| 1570 | |
| 1571 | exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid); |
| 1572 | if (IS_ERR(exp)) { |
| 1573 | dprintk("%s: could not find device id\n", __func__); |
| 1574 | return nfserr_noent; |
| 1575 | } |
| 1576 | |
| 1577 | nfserr = nfserr_layoutunavailable; |
| 1578 | ops = nfsd4_layout_verify(exp, gdp->gd_layout_type); |
| 1579 | if (!ops) |
| 1580 | goto out; |
| 1581 | |
| 1582 | nfserr = nfs_ok; |
Christoph Hellwig | f99d4fb | 2016-03-04 20:46:17 +0100 | [diff] [blame] | 1583 | if (gdp->gd_maxcount != 0) { |
| 1584 | nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb, |
Tom Haynes | d7c920d | 2016-06-14 13:41:27 -0700 | [diff] [blame] | 1585 | rqstp, cstate->session->se_client, gdp); |
Christoph Hellwig | f99d4fb | 2016-03-04 20:46:17 +0100 | [diff] [blame] | 1586 | } |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1587 | |
| 1588 | gdp->gd_notify_types &= ops->notify_types; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1589 | out: |
Kinglong Mee | a142038 | 2015-03-15 23:12:15 +0800 | [diff] [blame] | 1590 | exp_put(exp); |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1591 | return nfserr; |
| 1592 | } |
| 1593 | |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 1594 | static void |
| 1595 | nfsd4_getdeviceinfo_release(union nfsd4_op_u *u) |
| 1596 | { |
| 1597 | kfree(u->getdeviceinfo.gd_device); |
| 1598 | } |
| 1599 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1600 | static __be32 |
| 1601 | nfsd4_layoutget(struct svc_rqst *rqstp, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1602 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1603 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1604 | struct nfsd4_layoutget *lgp = &u->layoutget; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1605 | struct svc_fh *current_fh = &cstate->current_fh; |
| 1606 | const struct nfsd4_layout_ops *ops; |
| 1607 | struct nfs4_layout_stateid *ls; |
| 1608 | __be32 nfserr; |
Benjamin Coddington | 66282ec | 2017-12-19 09:35:25 -0500 | [diff] [blame] | 1609 | int accmode = NFSD_MAY_READ_IF_EXEC; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1610 | |
| 1611 | switch (lgp->lg_seg.iomode) { |
| 1612 | case IOMODE_READ: |
Benjamin Coddington | 66282ec | 2017-12-19 09:35:25 -0500 | [diff] [blame] | 1613 | accmode |= NFSD_MAY_READ; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1614 | break; |
| 1615 | case IOMODE_RW: |
Benjamin Coddington | 66282ec | 2017-12-19 09:35:25 -0500 | [diff] [blame] | 1616 | accmode |= NFSD_MAY_READ | NFSD_MAY_WRITE; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1617 | break; |
| 1618 | default: |
| 1619 | dprintk("%s: invalid iomode %d\n", |
| 1620 | __func__, lgp->lg_seg.iomode); |
| 1621 | nfserr = nfserr_badiomode; |
| 1622 | goto out; |
| 1623 | } |
| 1624 | |
| 1625 | nfserr = fh_verify(rqstp, current_fh, 0, accmode); |
| 1626 | if (nfserr) |
| 1627 | goto out; |
| 1628 | |
| 1629 | nfserr = nfserr_layoutunavailable; |
| 1630 | ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type); |
| 1631 | if (!ops) |
| 1632 | goto out; |
| 1633 | |
| 1634 | /* |
| 1635 | * Verify minlength and range as per RFC5661: |
| 1636 | * o If loga_length is less than loga_minlength, |
| 1637 | * the metadata server MUST return NFS4ERR_INVAL. |
| 1638 | * o If the sum of loga_offset and loga_minlength exceeds |
| 1639 | * NFS4_UINT64_MAX, and loga_minlength is not |
| 1640 | * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result. |
| 1641 | * o If the sum of loga_offset and loga_length exceeds |
| 1642 | * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX, |
| 1643 | * the error NFS4ERR_INVAL MUST result. |
| 1644 | */ |
| 1645 | nfserr = nfserr_inval; |
| 1646 | if (lgp->lg_seg.length < lgp->lg_minlength || |
| 1647 | (lgp->lg_minlength != NFS4_MAX_UINT64 && |
| 1648 | lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) || |
| 1649 | (lgp->lg_seg.length != NFS4_MAX_UINT64 && |
| 1650 | lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset)) |
| 1651 | goto out; |
| 1652 | if (lgp->lg_seg.length == 0) |
| 1653 | goto out; |
| 1654 | |
| 1655 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid, |
| 1656 | true, lgp->lg_layout_type, &ls); |
Christoph Hellwig | 31ef83d | 2014-08-16 19:02:22 -0500 | [diff] [blame] | 1657 | if (nfserr) { |
Chuck Lever | f394b62 | 2018-03-27 10:53:11 -0400 | [diff] [blame] | 1658 | trace_nfsd_layout_get_lookup_fail(&lgp->lg_sid); |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1659 | goto out; |
Christoph Hellwig | 31ef83d | 2014-08-16 19:02:22 -0500 | [diff] [blame] | 1660 | } |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1661 | |
Christoph Hellwig | c5c707f | 2014-09-23 12:38:48 +0200 | [diff] [blame] | 1662 | nfserr = nfserr_recallconflict; |
| 1663 | if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls)) |
| 1664 | goto out_put_stid; |
| 1665 | |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1666 | nfserr = ops->proc_layoutget(d_inode(current_fh->fh_dentry), |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1667 | current_fh, lgp); |
| 1668 | if (nfserr) |
| 1669 | goto out_put_stid; |
| 1670 | |
| 1671 | nfserr = nfsd4_insert_layout(lgp, ls); |
| 1672 | |
| 1673 | out_put_stid: |
Jeff Layton | cc8a553 | 2015-09-17 07:58:24 -0400 | [diff] [blame] | 1674 | mutex_unlock(&ls->ls_mutex); |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1675 | nfs4_put_stid(&ls->ls_stid); |
| 1676 | out: |
| 1677 | return nfserr; |
| 1678 | } |
| 1679 | |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 1680 | static void |
| 1681 | nfsd4_layoutget_release(union nfsd4_op_u *u) |
| 1682 | { |
| 1683 | kfree(u->layoutget.lg_content); |
| 1684 | } |
| 1685 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1686 | static __be32 |
| 1687 | nfsd4_layoutcommit(struct svc_rqst *rqstp, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1688 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1689 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1690 | struct nfsd4_layoutcommit *lcp = &u->layoutcommit; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1691 | const struct nfsd4_layout_seg *seg = &lcp->lc_seg; |
| 1692 | struct svc_fh *current_fh = &cstate->current_fh; |
| 1693 | const struct nfsd4_layout_ops *ops; |
| 1694 | loff_t new_size = lcp->lc_last_wr + 1; |
| 1695 | struct inode *inode; |
| 1696 | struct nfs4_layout_stateid *ls; |
| 1697 | __be32 nfserr; |
| 1698 | |
| 1699 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE); |
| 1700 | if (nfserr) |
| 1701 | goto out; |
| 1702 | |
| 1703 | nfserr = nfserr_layoutunavailable; |
| 1704 | ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type); |
| 1705 | if (!ops) |
| 1706 | goto out; |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 1707 | inode = d_inode(current_fh->fh_dentry); |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1708 | |
| 1709 | nfserr = nfserr_inval; |
| 1710 | if (new_size <= seg->offset) { |
| 1711 | dprintk("pnfsd: last write before layout segment\n"); |
| 1712 | goto out; |
| 1713 | } |
| 1714 | if (new_size > seg->offset + seg->length) { |
| 1715 | dprintk("pnfsd: last write beyond layout segment\n"); |
| 1716 | goto out; |
| 1717 | } |
| 1718 | if (!lcp->lc_newoffset && new_size > i_size_read(inode)) { |
| 1719 | dprintk("pnfsd: layoutcommit beyond EOF\n"); |
| 1720 | goto out; |
| 1721 | } |
| 1722 | |
| 1723 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid, |
| 1724 | false, lcp->lc_layout_type, |
| 1725 | &ls); |
| 1726 | if (nfserr) { |
Chuck Lever | f394b62 | 2018-03-27 10:53:11 -0400 | [diff] [blame] | 1727 | trace_nfsd_layout_commit_lookup_fail(&lcp->lc_sid); |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1728 | /* fixup error code as per RFC5661 */ |
| 1729 | if (nfserr == nfserr_bad_stateid) |
| 1730 | nfserr = nfserr_badlayout; |
| 1731 | goto out; |
| 1732 | } |
| 1733 | |
Jeff Layton | cc8a553 | 2015-09-17 07:58:24 -0400 | [diff] [blame] | 1734 | /* LAYOUTCOMMIT does not require any serialization */ |
| 1735 | mutex_unlock(&ls->ls_mutex); |
| 1736 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1737 | if (new_size > i_size_read(inode)) { |
| 1738 | lcp->lc_size_chg = 1; |
| 1739 | lcp->lc_newsize = new_size; |
| 1740 | } else { |
| 1741 | lcp->lc_size_chg = 0; |
| 1742 | } |
| 1743 | |
Kinglong Mee | d8398fc | 2015-07-07 10:12:03 +0800 | [diff] [blame] | 1744 | nfserr = ops->proc_layoutcommit(inode, lcp); |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1745 | nfs4_put_stid(&ls->ls_stid); |
| 1746 | out: |
| 1747 | return nfserr; |
| 1748 | } |
| 1749 | |
| 1750 | static __be32 |
| 1751 | nfsd4_layoutreturn(struct svc_rqst *rqstp, |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1752 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1753 | { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 1754 | struct nfsd4_layoutreturn *lrp = &u->layoutreturn; |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 1755 | struct svc_fh *current_fh = &cstate->current_fh; |
| 1756 | __be32 nfserr; |
| 1757 | |
| 1758 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP); |
| 1759 | if (nfserr) |
| 1760 | goto out; |
| 1761 | |
| 1762 | nfserr = nfserr_layoutunavailable; |
| 1763 | if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type)) |
| 1764 | goto out; |
| 1765 | |
| 1766 | switch (lrp->lr_seg.iomode) { |
| 1767 | case IOMODE_READ: |
| 1768 | case IOMODE_RW: |
| 1769 | case IOMODE_ANY: |
| 1770 | break; |
| 1771 | default: |
| 1772 | dprintk("%s: invalid iomode %d\n", __func__, |
| 1773 | lrp->lr_seg.iomode); |
| 1774 | nfserr = nfserr_inval; |
| 1775 | goto out; |
| 1776 | } |
| 1777 | |
| 1778 | switch (lrp->lr_return_type) { |
| 1779 | case RETURN_FILE: |
| 1780 | nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp); |
| 1781 | break; |
| 1782 | case RETURN_FSID: |
| 1783 | case RETURN_ALL: |
| 1784 | nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp); |
| 1785 | break; |
| 1786 | default: |
| 1787 | dprintk("%s: invalid return_type %d\n", __func__, |
| 1788 | lrp->lr_return_type); |
| 1789 | nfserr = nfserr_inval; |
| 1790 | break; |
| 1791 | } |
| 1792 | out: |
| 1793 | return nfserr; |
| 1794 | } |
| 1795 | #endif /* CONFIG_NFSD_PNFS */ |
| 1796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | /* |
| 1798 | * NULL call. |
| 1799 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 1800 | static __be32 |
Christoph Hellwig | a6beb73 | 2017-05-08 17:35:49 +0200 | [diff] [blame] | 1801 | nfsd4_proc_null(struct svc_rqst *rqstp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | { |
| 1803 | return nfs_ok; |
| 1804 | } |
| 1805 | |
Shankar Anand | e2b2095 | 2006-07-10 04:45:44 -0700 | [diff] [blame] | 1806 | static inline void nfsd4_increment_op_stats(u32 opnum) |
| 1807 | { |
| 1808 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) |
| 1809 | nfsdstats.nfs4_opcount[opnum]++; |
| 1810 | } |
| 1811 | |
Christoph Hellwig | bb2a8b0 | 2017-05-08 23:46:47 +0200 | [diff] [blame] | 1812 | static const struct nfsd4_operation nfsd4_ops[]; |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1813 | |
Adrian Bunk | f1c7f79 | 2008-08-08 19:26:42 +0300 | [diff] [blame] | 1814 | static const char *nfsd4_op_name(unsigned opnum); |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 1815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | /* |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1817 | * Enforce NFSv4.1 COMPOUND ordering rules: |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1818 | * |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1819 | * Also note, enforced elsewhere: |
| 1820 | * - SEQUENCE other than as first op results in |
| 1821 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 1822 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
| 1823 | * (Enforced in nfsd4_bind_conn_to_session().) |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1824 | * - DESTROY_SESSION must be the final operation in a compound, if |
| 1825 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. |
| 1826 | * (Enforced in nfsd4_destroy_session().) |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1827 | */ |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1828 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1829 | { |
J. Bruce Fields | 7a04cfd | 2018-06-13 15:04:59 -0400 | [diff] [blame] | 1830 | struct nfsd4_op *first_op = &args->ops[0]; |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1831 | |
| 1832 | /* These ordering requirements don't apply to NFSv4.0: */ |
| 1833 | if (args->minorversion == 0) |
| 1834 | return nfs_ok; |
| 1835 | /* This is weird, but OK, not our problem: */ |
| 1836 | if (args->opcnt == 0) |
| 1837 | return nfs_ok; |
J. Bruce Fields | 7a04cfd | 2018-06-13 15:04:59 -0400 | [diff] [blame] | 1838 | if (first_op->status == nfserr_op_illegal) |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1839 | return nfs_ok; |
J. Bruce Fields | 7a04cfd | 2018-06-13 15:04:59 -0400 | [diff] [blame] | 1840 | if (!(nfsd4_ops[first_op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1841 | return nfserr_op_not_in_session; |
J. Bruce Fields | 7a04cfd | 2018-06-13 15:04:59 -0400 | [diff] [blame] | 1842 | if (first_op->opnum == OP_SEQUENCE) |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1843 | return nfs_ok; |
J. Bruce Fields | 7a04cfd | 2018-06-13 15:04:59 -0400 | [diff] [blame] | 1844 | /* |
| 1845 | * So first_op is something allowed outside a session, like |
| 1846 | * EXCHANGE_ID; but then it has to be the only op in the |
| 1847 | * compound: |
| 1848 | */ |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1849 | if (args->opcnt != 1) |
| 1850 | return nfserr_not_only_op; |
| 1851 | return nfs_ok; |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1852 | } |
| 1853 | |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 1854 | const struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
J. Bruce Fields | 22b0321 | 2011-04-09 11:23:24 -0400 | [diff] [blame] | 1855 | { |
| 1856 | return &nfsd4_ops[op->opnum]; |
| 1857 | } |
| 1858 | |
J. Bruce Fields | 1091006 | 2011-01-24 12:11:02 -0500 | [diff] [blame] | 1859 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
| 1860 | { |
J. Bruce Fields | e372ba6 | 2014-05-19 12:27:11 -0400 | [diff] [blame] | 1861 | if (op->opnum == OP_ILLEGAL) |
| 1862 | return false; |
J. Bruce Fields | c856694 | 2011-09-20 08:49:51 -0400 | [diff] [blame] | 1863 | return OPDESC(op)->op_flags & OP_CACHEME; |
J. Bruce Fields | 1091006 | 2011-01-24 12:11:02 -0500 | [diff] [blame] | 1864 | } |
| 1865 | |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 1866 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
| 1867 | { |
| 1868 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
| 1869 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; |
| 1870 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; |
| 1871 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; |
Christoph Hellwig | bb2a8b0 | 2017-05-08 23:46:47 +0200 | [diff] [blame] | 1872 | const struct nfsd4_operation *thisd = OPDESC(this); |
| 1873 | const struct nfsd4_operation *nextd; |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 1874 | |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 1875 | /* |
| 1876 | * Most ops check wronsec on our own; only the putfh-like ops |
| 1877 | * have special rules. |
| 1878 | */ |
| 1879 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) |
| 1880 | return false; |
| 1881 | /* |
| 1882 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a |
| 1883 | * put-filehandle operation if we're not going to use the |
| 1884 | * result: |
| 1885 | */ |
| 1886 | if (argp->opcnt == resp->opcnt) |
| 1887 | return false; |
J. Bruce Fields | 51904b0 | 2014-10-22 14:46:29 -0400 | [diff] [blame] | 1888 | if (next->opnum == OP_ILLEGAL) |
| 1889 | return false; |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 1890 | nextd = OPDESC(next); |
| 1891 | /* |
| 1892 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC |
| 1893 | * errors themselves as necessary; others should check for them |
| 1894 | * now: |
| 1895 | */ |
| 1896 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); |
| 1897 | } |
| 1898 | |
J. Bruce Fields | 2d124dfaa | 2014-01-15 16:26:42 -0500 | [diff] [blame] | 1899 | static void svcxdr_init_encode(struct svc_rqst *rqstp, |
| 1900 | struct nfsd4_compoundres *resp) |
| 1901 | { |
| 1902 | struct xdr_stream *xdr = &resp->xdr; |
| 1903 | struct xdr_buf *buf = &rqstp->rq_res; |
| 1904 | struct kvec *head = buf->head; |
| 1905 | |
| 1906 | xdr->buf = buf; |
J. Bruce Fields | ddd1ea5 | 2013-08-27 21:32:25 -0400 | [diff] [blame] | 1907 | xdr->iov = head; |
J. Bruce Fields | 2d124dfaa | 2014-01-15 16:26:42 -0500 | [diff] [blame] | 1908 | xdr->p = head->iov_base + head->iov_len; |
J. Bruce Fields | a5cddc8 | 2014-05-12 18:10:58 -0400 | [diff] [blame] | 1909 | xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack; |
J. Bruce Fields | 6ac9039 | 2014-02-26 17:39:35 -0500 | [diff] [blame] | 1910 | /* Tail and page_len should be zero at this point: */ |
| 1911 | buf->len = buf->head[0].iov_len; |
J. Bruce Fields | 2825a7f | 2013-08-26 16:04:46 -0400 | [diff] [blame] | 1912 | xdr->scratch.iov_len = 0; |
J. Bruce Fields | 05638dc | 2014-06-02 12:05:47 -0400 | [diff] [blame] | 1913 | xdr->page_ptr = buf->pages - 1; |
J. Bruce Fields | 2825a7f | 2013-08-26 16:04:46 -0400 | [diff] [blame] | 1914 | buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages) |
J. Bruce Fields | a5cddc8 | 2014-05-12 18:10:58 -0400 | [diff] [blame] | 1915 | - rqstp->rq_auth_slack; |
J. Bruce Fields | 2d124dfaa | 2014-01-15 16:26:42 -0500 | [diff] [blame] | 1916 | } |
| 1917 | |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1918 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | * COMPOUND call. |
| 1920 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 1921 | static __be32 |
Christoph Hellwig | a6beb73 | 2017-05-08 17:35:49 +0200 | [diff] [blame] | 1922 | nfsd4_proc_compound(struct svc_rqst *rqstp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | { |
Christoph Hellwig | a6beb73 | 2017-05-08 17:35:49 +0200 | [diff] [blame] | 1924 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
| 1925 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | struct nfsd4_op *op; |
Andy Adamson | e354d57 | 2009-03-28 11:30:52 +0300 | [diff] [blame] | 1927 | struct nfsd4_compound_state *cstate = &resp->cstate; |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 1928 | struct svc_fh *current_fh = &cstate->current_fh; |
| 1929 | struct svc_fh *save_fh = &cstate->save_fh; |
Trond Myklebust | e333f3b | 2019-04-09 11:46:19 -0400 | [diff] [blame] | 1930 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1931 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | |
J. Bruce Fields | 2d124dfaa | 2014-01-15 16:26:42 -0500 | [diff] [blame] | 1933 | svcxdr_init_encode(rqstp, resp); |
J. Bruce Fields | 4aea24b | 2014-01-15 15:17:58 -0500 | [diff] [blame] | 1934 | resp->tagp = resp->xdr.p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | /* reserve space for: taglen, tag, and opcnt */ |
J. Bruce Fields | d3f627c | 2014-02-26 17:00:38 -0500 | [diff] [blame] | 1936 | xdr_reserve_space(&resp->xdr, 8 + args->taglen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | resp->taglen = args->taglen; |
| 1938 | resp->tag = args->tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | resp->rqstp = rqstp; |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 1940 | cstate->minorversion = args->minorversion; |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 1941 | fh_init(current_fh, NFS4_FHSIZE); |
| 1942 | fh_init(save_fh, NFS4_FHSIZE); |
NeilBrown | 8ff30fa | 2010-08-12 17:04:07 +1000 | [diff] [blame] | 1943 | /* |
| 1944 | * Don't use the deferral mechanism for NFSv4; compounds make it |
| 1945 | * too hard to avoid non-idempotency problems. |
| 1946 | */ |
Jeff Layton | 30660e04b | 2014-11-19 07:51:16 -0500 | [diff] [blame] | 1947 | clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | |
| 1949 | /* |
| 1950 | * According to RFC3010, this takes precedence over all other errors. |
| 1951 | */ |
| 1952 | status = nfserr_minor_vers_mismatch; |
Trond Myklebust | e333f3b | 2019-04-09 11:46:19 -0400 | [diff] [blame] | 1953 | if (nfsd_minorversion(nn, args->minorversion, NFSD_TEST) <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | goto out; |
J. Bruce Fields | 0078117 | 2017-11-15 12:30:27 -0500 | [diff] [blame] | 1955 | status = nfserr_resource; |
| 1956 | if (args->opcnt > NFSD_MAX_OPS_PER_COMPOUND) |
| 1957 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1958 | |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1959 | status = nfs41_check_op_ordering(args); |
| 1960 | if (status) { |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1961 | op = &args->ops[0]; |
J. Bruce Fields | 5771635 | 2010-04-21 12:27:19 -0400 | [diff] [blame] | 1962 | op->status = status; |
J. Bruce Fields | 5b7b15ae | 2018-06-13 15:21:35 -0400 | [diff] [blame] | 1963 | resp->opcnt = 1; |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 1964 | goto encode_op; |
| 1965 | } |
| 1966 | |
Chuck Lever | fff4080 | 2018-03-27 10:53:54 -0400 | [diff] [blame] | 1967 | trace_nfsd_compound(rqstp, args->opcnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | while (!status && resp->opcnt < args->opcnt) { |
| 1969 | op = &args->ops[resp->opcnt++]; |
| 1970 | |
| 1971 | /* |
| 1972 | * The XDR decode routines may have pre-set op->status; |
| 1973 | * for example, if there is a miscellaneous XDR error |
| 1974 | * it will be set to nfserr_bad_xdr. |
| 1975 | */ |
J. Bruce Fields | 9d313b1 | 2013-02-28 12:51:49 -0800 | [diff] [blame] | 1976 | if (op->status) { |
| 1977 | if (op->opnum == OP_OPEN) |
| 1978 | op->status = nfsd4_open_omfg(rqstp, cstate, op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | goto encode_op; |
J. Bruce Fields | 9d313b1 | 2013-02-28 12:51:49 -0800 | [diff] [blame] | 1980 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 1982 | if (!current_fh->fh_dentry) { |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 1983 | if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1984 | op->status = nfserr_nofilehandle; |
| 1985 | goto encode_op; |
| 1986 | } |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 1987 | } else if (current_fh->fh_export->ex_fslocs.migrated && |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 1988 | !(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1989 | op->status = nfserr_moved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | goto encode_op; |
| 1991 | } |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 1992 | |
Kinglong Mee | 2336745 | 2014-03-29 10:23:47 +0800 | [diff] [blame] | 1993 | fh_clear_wcc(current_fh); |
| 1994 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 1995 | /* If op is non-idempotent */ |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 1996 | if (op->opdesc->op_flags & OP_MODIFIES_SOMETHING) { |
J. Bruce Fields | 4c69d58 | 2014-01-28 16:01:04 -0500 | [diff] [blame] | 1997 | /* |
J. Bruce Fields | a8095f7 | 2014-03-11 17:54:34 -0400 | [diff] [blame] | 1998 | * Don't execute this op if we couldn't encode a |
| 1999 | * succesful reply: |
| 2000 | */ |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 2001 | u32 plen = op->opdesc->op_rsize_bop(rqstp, op); |
J. Bruce Fields | a8095f7 | 2014-03-11 17:54:34 -0400 | [diff] [blame] | 2002 | /* |
| 2003 | * Plus if there's another operation, make sure |
J. Bruce Fields | 4c69d58 | 2014-01-28 16:01:04 -0500 | [diff] [blame] | 2004 | * we'll have space to at least encode an error: |
| 2005 | */ |
| 2006 | if (resp->opcnt < args->opcnt) |
| 2007 | plen += COMPOUND_ERR_SLACK_SPACE; |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2008 | op->status = nfsd4_check_resp_size(resp, plen); |
| 2009 | } |
| 2010 | |
| 2011 | if (op->status) |
| 2012 | goto encode_op; |
| 2013 | |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 2014 | if (op->opdesc->op_get_currentstateid) |
| 2015 | op->opdesc->op_get_currentstateid(cstate, &op->u); |
| 2016 | op->status = op->opdesc->op_func(rqstp, cstate, &op->u); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | |
J. Bruce Fields | 9a30740 | 2017-05-23 12:24:40 -0400 | [diff] [blame] | 2018 | /* Only from SEQUENCE */ |
| 2019 | if (cstate->status == nfserr_replay_cache) { |
| 2020 | dprintk("%s NFS4.1 replay from cache\n", __func__); |
| 2021 | status = op->status; |
| 2022 | goto out; |
| 2023 | } |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 2024 | if (!op->status) { |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 2025 | if (op->opdesc->op_set_currentstateid) |
| 2026 | op->opdesc->op_set_currentstateid(cstate, &op->u); |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 2027 | |
J. Bruce Fields | f4f9ef4 | 2017-07-06 17:51:29 -0400 | [diff] [blame] | 2028 | if (op->opdesc->op_flags & OP_CLEAR_STATEID) |
Tigran Mkrtchyan | 37c593c | 2012-02-13 22:55:32 +0100 | [diff] [blame] | 2029 | clear_current_stateid(cstate); |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 2030 | |
| 2031 | if (need_wrongsec_check(rqstp)) |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 2032 | op->status = check_nfsd_access(current_fh->fh_export, rqstp); |
Tigran Mkrtchyan | 8b70484 | 2012-02-13 22:55:24 +0100 | [diff] [blame] | 2033 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | encode_op: |
Al Viro | a90b061 | 2006-10-19 23:29:03 -0700 | [diff] [blame] | 2035 | if (op->status == nfserr_replay_me) { |
J.Bruce Fields | a4f1706a9 | 2006-12-13 00:35:28 -0800 | [diff] [blame] | 2036 | op->replay = &cstate->replay_owner->so_replay; |
J. Bruce Fields | d0a381d | 2014-01-30 17:18:38 -0500 | [diff] [blame] | 2037 | nfsd4_encode_replay(&resp->xdr, op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | status = op->status = op->replay->rp_status; |
| 2039 | } else { |
| 2040 | nfsd4_encode_operation(resp, op); |
| 2041 | status = op->status; |
| 2042 | } |
Benny Halevy | 0407717 | 2008-12-15 19:40:49 +0200 | [diff] [blame] | 2043 | |
Chuck Lever | fff4080 | 2018-03-27 10:53:54 -0400 | [diff] [blame] | 2044 | trace_nfsd_compound_status(args->opcnt, resp->opcnt, status, |
| 2045 | nfsd4_op_name(op->opnum)); |
Benny Halevy | 0407717 | 2008-12-15 19:40:49 +0200 | [diff] [blame] | 2046 | |
Jeff Layton | 58fb12e | 2014-07-29 21:34:27 -0400 | [diff] [blame] | 2047 | nfsd4_cstate_clear_replay(cstate); |
Shankar Anand | e2b2095 | 2006-07-10 04:45:44 -0700 | [diff] [blame] | 2048 | nfsd4_increment_op_stats(op->opnum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2049 | } |
| 2050 | |
Kinglong Mee | 4daeed2 | 2014-03-26 17:10:37 +0800 | [diff] [blame] | 2051 | cstate->status = status; |
| 2052 | fh_put(current_fh); |
| 2053 | fh_put(save_fh); |
| 2054 | BUG_ON(cstate->replay_owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | out: |
Andy Adamson | 2f42587 | 2009-04-03 08:27:32 +0300 | [diff] [blame] | 2056 | /* Reset deferral mechanism for RPC deferrals */ |
Jeff Layton | 30660e04b | 2014-11-19 07:51:16 -0500 | [diff] [blame] | 2057 | set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
J. Bruce Fields | 3b12cd9 | 2008-05-05 17:17:44 -0400 | [diff] [blame] | 2058 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | return status; |
| 2060 | } |
| 2061 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2062 | #define op_encode_hdr_size (2) |
| 2063 | #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) |
| 2064 | #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) |
| 2065 | #define op_encode_change_info_maxsz (5) |
| 2066 | #define nfs4_fattr_bitmap_maxsz (4) |
| 2067 | |
J. Bruce Fields | 8c7424c | 2014-03-10 12:19:10 -0400 | [diff] [blame] | 2068 | /* We'll fall back on returning no lockowner if run out of space: */ |
| 2069 | #define op_encode_lockowner_maxsz (0) |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2070 | #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) |
| 2071 | |
| 2072 | #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) |
| 2073 | |
| 2074 | #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) |
| 2075 | #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ |
| 2076 | op_encode_ace_maxsz) |
| 2077 | |
| 2078 | #define op_encode_channel_attrs_maxsz (6 + 1 + 1) |
| 2079 | |
| 2080 | static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2081 | { |
| 2082 | return (op_encode_hdr_size) * sizeof(__be32); |
| 2083 | } |
| 2084 | |
| 2085 | static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2086 | { |
| 2087 | return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); |
| 2088 | } |
| 2089 | |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2090 | static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2091 | { |
| 2092 | /* ac_supported, ac_resp_access */ |
| 2093 | return (op_encode_hdr_size + 2)* sizeof(__be32); |
| 2094 | } |
| 2095 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2096 | static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2097 | { |
| 2098 | return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); |
| 2099 | } |
| 2100 | |
| 2101 | static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2102 | { |
| 2103 | return (op_encode_hdr_size + op_encode_change_info_maxsz |
| 2104 | + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); |
| 2105 | } |
| 2106 | |
J. Bruce Fields | b86cef6 | 2014-03-23 12:01:48 -0400 | [diff] [blame] | 2107 | /* |
| 2108 | * Note since this is an idempotent operation we won't insist on failing |
| 2109 | * the op prematurely if the estimate is too large. We may turn off splice |
| 2110 | * reads unnecessarily. |
| 2111 | */ |
| 2112 | static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp, |
| 2113 | struct nfsd4_op *op) |
| 2114 | { |
| 2115 | u32 *bmap = op->u.getattr.ga_bmval; |
| 2116 | u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2]; |
| 2117 | u32 ret = 0; |
| 2118 | |
| 2119 | if (bmap0 & FATTR4_WORD0_ACL) |
| 2120 | return svc_max_payload(rqstp); |
| 2121 | if (bmap0 & FATTR4_WORD0_FS_LOCATIONS) |
| 2122 | return svc_max_payload(rqstp); |
| 2123 | |
| 2124 | if (bmap1 & FATTR4_WORD1_OWNER) { |
| 2125 | ret += IDMAP_NAMESZ + 4; |
| 2126 | bmap1 &= ~FATTR4_WORD1_OWNER; |
| 2127 | } |
| 2128 | if (bmap1 & FATTR4_WORD1_OWNER_GROUP) { |
| 2129 | ret += IDMAP_NAMESZ + 4; |
| 2130 | bmap1 &= ~FATTR4_WORD1_OWNER_GROUP; |
| 2131 | } |
| 2132 | if (bmap0 & FATTR4_WORD0_FILEHANDLE) { |
| 2133 | ret += NFS4_FHSIZE + 4; |
| 2134 | bmap0 &= ~FATTR4_WORD0_FILEHANDLE; |
| 2135 | } |
| 2136 | if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) { |
Kinglong Mee | 1ec8c0c | 2015-03-28 23:46:09 +0800 | [diff] [blame] | 2137 | ret += NFS4_MAXLABELLEN + 12; |
J. Bruce Fields | b86cef6 | 2014-03-23 12:01:48 -0400 | [diff] [blame] | 2138 | bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL; |
| 2139 | } |
| 2140 | /* |
| 2141 | * Largest of remaining attributes are 16 bytes (e.g., |
| 2142 | * supported_attributes) |
| 2143 | */ |
| 2144 | ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2)); |
| 2145 | /* bitmask, length */ |
| 2146 | ret += 20; |
| 2147 | return ret; |
| 2148 | } |
| 2149 | |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2150 | static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2151 | { |
| 2152 | return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE; |
| 2153 | } |
| 2154 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2155 | static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2156 | { |
| 2157 | return (op_encode_hdr_size + op_encode_change_info_maxsz) |
| 2158 | * sizeof(__be32); |
| 2159 | } |
| 2160 | |
| 2161 | static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2162 | { |
| 2163 | return (op_encode_hdr_size + op_encode_lock_denied_maxsz) |
| 2164 | * sizeof(__be32); |
| 2165 | } |
| 2166 | |
| 2167 | static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2168 | { |
| 2169 | return (op_encode_hdr_size + op_encode_stateid_maxsz |
| 2170 | + op_encode_change_info_maxsz + 1 |
| 2171 | + nfs4_fattr_bitmap_maxsz |
| 2172 | + op_encode_delegation_maxsz) * sizeof(__be32); |
| 2173 | } |
| 2174 | |
| 2175 | static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2176 | { |
| 2177 | u32 maxcount = 0, rlen = 0; |
| 2178 | |
| 2179 | maxcount = svc_max_payload(rqstp); |
Kinglong Mee | 3c7aa15 | 2014-06-10 18:08:19 +0800 | [diff] [blame] | 2180 | rlen = min(op->u.read.rd_length, maxcount); |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2181 | |
J. Bruce Fields | 622f560 | 2014-05-16 14:38:20 -0400 | [diff] [blame] | 2182 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32); |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2183 | } |
| 2184 | |
| 2185 | static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2186 | { |
Kinglong Mee | 3c7aa15 | 2014-06-10 18:08:19 +0800 | [diff] [blame] | 2187 | u32 maxcount = 0, rlen = 0; |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2188 | |
Kinglong Mee | 3c7aa15 | 2014-06-10 18:08:19 +0800 | [diff] [blame] | 2189 | maxcount = svc_max_payload(rqstp); |
| 2190 | rlen = min(op->u.readdir.rd_maxcount, maxcount); |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2191 | |
J. Bruce Fields | 561f0ed | 2014-01-20 16:37:11 -0500 | [diff] [blame] | 2192 | return (op_encode_hdr_size + op_encode_verifier_maxsz + |
| 2193 | XDR_QUADLEN(rlen)) * sizeof(__be32); |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2194 | } |
| 2195 | |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2196 | static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2197 | { |
| 2198 | return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE; |
| 2199 | } |
| 2200 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2201 | static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2202 | { |
| 2203 | return (op_encode_hdr_size + op_encode_change_info_maxsz) |
| 2204 | * sizeof(__be32); |
| 2205 | } |
| 2206 | |
| 2207 | static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2208 | { |
| 2209 | return (op_encode_hdr_size + op_encode_change_info_maxsz |
| 2210 | + op_encode_change_info_maxsz) * sizeof(__be32); |
| 2211 | } |
| 2212 | |
J. Bruce Fields | ccae70a | 2014-03-23 09:34:22 -0700 | [diff] [blame] | 2213 | static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, |
| 2214 | struct nfsd4_op *op) |
| 2215 | { |
J. Bruce Fields | d1d84c9 | 2014-08-21 15:04:31 -0400 | [diff] [blame] | 2216 | return (op_encode_hdr_size |
| 2217 | + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32); |
J. Bruce Fields | ccae70a | 2014-03-23 09:34:22 -0700 | [diff] [blame] | 2218 | } |
| 2219 | |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2220 | static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2221 | { |
| 2222 | return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids) |
| 2223 | * sizeof(__be32); |
| 2224 | } |
| 2225 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2226 | static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2227 | { |
| 2228 | return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); |
| 2229 | } |
| 2230 | |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2231 | static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2232 | { |
| 2233 | return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR * |
| 2234 | (4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32); |
| 2235 | } |
| 2236 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2237 | static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2238 | { |
J. Bruce Fields | 480efae | 2014-03-10 14:17:55 -0400 | [diff] [blame] | 2239 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * |
| 2240 | sizeof(__be32); |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2241 | } |
| 2242 | |
| 2243 | static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2244 | { |
J. Bruce Fields | f34e432 | 2014-05-16 21:24:56 -0400 | [diff] [blame] | 2245 | return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32); |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2246 | } |
| 2247 | |
| 2248 | static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2249 | { |
| 2250 | return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ |
Kinglong Mee | a8bb84b | 2013-12-10 15:24:36 +0800 | [diff] [blame] | 2251 | 1 + 1 + /* eir_flags, spr_how */\ |
| 2252 | 4 + /* spo_must_enforce & _allow with bitmap */\ |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2253 | 2 + /*eir_server_owner.so_minor_id */\ |
| 2254 | /* eir_server_owner.so_major_id<> */\ |
| 2255 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ |
| 2256 | /* eir_server_scope<> */\ |
| 2257 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ |
| 2258 | 1 + /* eir_server_impl_id array length */\ |
| 2259 | 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); |
| 2260 | } |
| 2261 | |
| 2262 | static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2263 | { |
| 2264 | return (op_encode_hdr_size + \ |
| 2265 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ |
| 2266 | 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); |
| 2267 | } |
| 2268 | |
| 2269 | static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2270 | { |
| 2271 | return (op_encode_hdr_size + \ |
| 2272 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ |
| 2273 | 2 + /* csr_sequence, csr_flags */\ |
| 2274 | op_encode_channel_attrs_maxsz + \ |
| 2275 | op_encode_channel_attrs_maxsz) * sizeof(__be32); |
| 2276 | } |
| 2277 | |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 2278 | static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2279 | { |
| 2280 | return (op_encode_hdr_size + |
| 2281 | 1 /* wr_callback */ + |
| 2282 | op_encode_stateid_maxsz /* wr_callback */ + |
| 2283 | 2 /* wr_count */ + |
| 2284 | 1 /* wr_committed */ + |
| 2285 | op_encode_verifier_maxsz + |
| 2286 | 1 /* cr_consecutive */ + |
| 2287 | 1 /* cr_synchronous */) * sizeof(__be32); |
| 2288 | } |
| 2289 | |
Olga Kornievskaia | 6308bc9 | 2018-07-20 18:19:18 -0400 | [diff] [blame] | 2290 | static inline u32 nfsd4_offload_status_rsize(struct svc_rqst *rqstp, |
| 2291 | struct nfsd4_op *op) |
| 2292 | { |
| 2293 | return (op_encode_hdr_size + |
| 2294 | 2 /* osr_count */ + |
| 2295 | 1 /* osr_complete<1> optional 0 for now */) * sizeof(__be32); |
| 2296 | } |
| 2297 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2298 | #ifdef CONFIG_NFSD_PNFS |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2299 | static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2300 | { |
| 2301 | u32 maxcount = 0, rlen = 0; |
| 2302 | |
| 2303 | maxcount = svc_max_payload(rqstp); |
| 2304 | rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount); |
| 2305 | |
| 2306 | return (op_encode_hdr_size + |
| 2307 | 1 /* gd_layout_type*/ + |
| 2308 | XDR_QUADLEN(rlen) + |
| 2309 | 2 /* gd_notify_types */) * sizeof(__be32); |
| 2310 | } |
| 2311 | |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2312 | /* |
| 2313 | * At this stage we don't really know what layout driver will handle the request, |
| 2314 | * so we need to define an arbitrary upper bound here. |
| 2315 | */ |
| 2316 | #define MAX_LAYOUT_SIZE 128 |
| 2317 | static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2318 | { |
| 2319 | return (op_encode_hdr_size + |
| 2320 | 1 /* logr_return_on_close */ + |
| 2321 | op_encode_stateid_maxsz + |
| 2322 | 1 /* nr of layouts */ + |
| 2323 | MAX_LAYOUT_SIZE) * sizeof(__be32); |
| 2324 | } |
| 2325 | |
| 2326 | static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2327 | { |
| 2328 | return (op_encode_hdr_size + |
| 2329 | 1 /* locr_newsize */ + |
| 2330 | 2 /* ns_size */) * sizeof(__be32); |
| 2331 | } |
| 2332 | |
| 2333 | static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2334 | { |
| 2335 | return (op_encode_hdr_size + |
| 2336 | 1 /* lrs_stateid */ + |
| 2337 | op_encode_stateid_maxsz) * sizeof(__be32); |
| 2338 | } |
| 2339 | #endif /* CONFIG_NFSD_PNFS */ |
| 2340 | |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2341 | |
| 2342 | static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2343 | { |
| 2344 | return (op_encode_hdr_size + 3) * sizeof(__be32); |
| 2345 | } |
| 2346 | |
Christoph Hellwig | bb2a8b0 | 2017-05-08 23:46:47 +0200 | [diff] [blame] | 2347 | static const struct nfsd4_operation nfsd4_ops[] = { |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2348 | [OP_ACCESS] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2349 | .op_func = nfsd4_access, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2350 | .op_name = "OP_ACCESS", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2351 | .op_rsize_bop = nfsd4_access_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2352 | }, |
| 2353 | [OP_CLOSE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2354 | .op_func = nfsd4_close, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2355 | .op_flags = OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2356 | .op_name = "OP_CLOSE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2357 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2358 | .op_get_currentstateid = nfsd4_get_closestateid, |
Christoph Hellwig | b60e985 | 2017-05-08 20:03:15 +0200 | [diff] [blame] | 2359 | .op_set_currentstateid = nfsd4_set_closestateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2360 | }, |
| 2361 | [OP_COMMIT] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2362 | .op_func = nfsd4_commit, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2363 | .op_flags = OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2364 | .op_name = "OP_COMMIT", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2365 | .op_rsize_bop = nfsd4_commit_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2366 | }, |
| 2367 | [OP_CREATE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2368 | .op_func = nfsd4_create, |
Tigran Mkrtchyan | d147105 | 2012-02-13 22:55:29 +0100 | [diff] [blame] | 2369 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2370 | .op_name = "OP_CREATE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2371 | .op_rsize_bop = nfsd4_create_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2372 | }, |
| 2373 | [OP_DELEGRETURN] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2374 | .op_func = nfsd4_delegreturn, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2375 | .op_flags = OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2376 | .op_name = "OP_DELEGRETURN", |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2377 | .op_rsize_bop = nfsd4_only_status_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2378 | .op_get_currentstateid = nfsd4_get_delegreturnstateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2379 | }, |
| 2380 | [OP_GETATTR] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2381 | .op_func = nfsd4_getattr, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 2382 | .op_flags = ALLOWED_ON_ABSENT_FS, |
J. Bruce Fields | b86cef6 | 2014-03-23 12:01:48 -0400 | [diff] [blame] | 2383 | .op_rsize_bop = nfsd4_getattr_rsize, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2384 | .op_name = "OP_GETATTR", |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2385 | }, |
| 2386 | [OP_GETFH] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2387 | .op_func = nfsd4_getfh, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2388 | .op_name = "OP_GETFH", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2389 | .op_rsize_bop = nfsd4_getfh_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2390 | }, |
| 2391 | [OP_LINK] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2392 | .op_func = nfsd4_link, |
J. Bruce Fields | c856694 | 2011-09-20 08:49:51 -0400 | [diff] [blame] | 2393 | .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING |
| 2394 | | OP_CACHEME, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2395 | .op_name = "OP_LINK", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2396 | .op_rsize_bop = nfsd4_link_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2397 | }, |
| 2398 | [OP_LOCK] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2399 | .op_func = nfsd4_lock, |
J. Bruce Fields | b7571e4 | 2017-05-06 10:49:21 -0400 | [diff] [blame] | 2400 | .op_flags = OP_MODIFIES_SOMETHING | |
| 2401 | OP_NONTRIVIAL_ERROR_ENCODE, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2402 | .op_name = "OP_LOCK", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2403 | .op_rsize_bop = nfsd4_lock_rsize, |
Christoph Hellwig | b60e985 | 2017-05-08 20:03:15 +0200 | [diff] [blame] | 2404 | .op_set_currentstateid = nfsd4_set_lockstateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2405 | }, |
| 2406 | [OP_LOCKT] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2407 | .op_func = nfsd4_lockt, |
J. Bruce Fields | b7571e4 | 2017-05-06 10:49:21 -0400 | [diff] [blame] | 2408 | .op_flags = OP_NONTRIVIAL_ERROR_ENCODE, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2409 | .op_name = "OP_LOCKT", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2410 | .op_rsize_bop = nfsd4_lock_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2411 | }, |
| 2412 | [OP_LOCKU] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2413 | .op_func = nfsd4_locku, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2414 | .op_flags = OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2415 | .op_name = "OP_LOCKU", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2416 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2417 | .op_get_currentstateid = nfsd4_get_lockustateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2418 | }, |
| 2419 | [OP_LOOKUP] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2420 | .op_func = nfsd4_lookup, |
Tigran Mkrtchyan | d147105 | 2012-02-13 22:55:29 +0100 | [diff] [blame] | 2421 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2422 | .op_name = "OP_LOOKUP", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2423 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2424 | }, |
| 2425 | [OP_LOOKUPP] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2426 | .op_func = nfsd4_lookupp, |
Tigran Mkrtchyan | d147105 | 2012-02-13 22:55:29 +0100 | [diff] [blame] | 2427 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2428 | .op_name = "OP_LOOKUPP", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2429 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2430 | }, |
| 2431 | [OP_NVERIFY] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2432 | .op_func = nfsd4_nverify, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2433 | .op_name = "OP_NVERIFY", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2434 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2435 | }, |
| 2436 | [OP_OPEN] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2437 | .op_func = nfsd4_open, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2438 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2439 | .op_name = "OP_OPEN", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2440 | .op_rsize_bop = nfsd4_open_rsize, |
Christoph Hellwig | b60e985 | 2017-05-08 20:03:15 +0200 | [diff] [blame] | 2441 | .op_set_currentstateid = nfsd4_set_openstateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2442 | }, |
| 2443 | [OP_OPEN_CONFIRM] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2444 | .op_func = nfsd4_open_confirm, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2445 | .op_flags = OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2446 | .op_name = "OP_OPEN_CONFIRM", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2447 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2448 | }, |
| 2449 | [OP_OPEN_DOWNGRADE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2450 | .op_func = nfsd4_open_downgrade, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2451 | .op_flags = OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2452 | .op_name = "OP_OPEN_DOWNGRADE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2453 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2454 | .op_get_currentstateid = nfsd4_get_opendowngradestateid, |
Christoph Hellwig | b60e985 | 2017-05-08 20:03:15 +0200 | [diff] [blame] | 2455 | .op_set_currentstateid = nfsd4_set_opendowngradestateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2456 | }, |
| 2457 | [OP_PUTFH] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2458 | .op_func = nfsd4_putfh, |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 2459 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
J. Bruce Fields | 5b64869 | 2014-03-07 11:43:58 -0500 | [diff] [blame] | 2460 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2461 | .op_name = "OP_PUTFH", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2462 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2463 | }, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 2464 | [OP_PUTPUBFH] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2465 | .op_func = nfsd4_putrootfh, |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 2466 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
J. Bruce Fields | 5b64869 | 2014-03-07 11:43:58 -0500 | [diff] [blame] | 2467 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2468 | .op_name = "OP_PUTPUBFH", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2469 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | eeac294 | 2006-12-13 00:35:39 -0800 | [diff] [blame] | 2470 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2471 | [OP_PUTROOTFH] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2472 | .op_func = nfsd4_putrootfh, |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 2473 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
J. Bruce Fields | 5b64869 | 2014-03-07 11:43:58 -0500 | [diff] [blame] | 2474 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2475 | .op_name = "OP_PUTROOTFH", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2476 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2477 | }, |
| 2478 | [OP_READ] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2479 | .op_func = nfsd4_read, |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 2480 | .op_release = nfsd4_read_release, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2481 | .op_name = "OP_READ", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2482 | .op_rsize_bop = nfsd4_read_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2483 | .op_get_currentstateid = nfsd4_get_readstateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2484 | }, |
| 2485 | [OP_READDIR] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2486 | .op_func = nfsd4_readdir, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2487 | .op_name = "OP_READDIR", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2488 | .op_rsize_bop = nfsd4_readdir_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2489 | }, |
| 2490 | [OP_READLINK] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2491 | .op_func = nfsd4_readlink, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2492 | .op_name = "OP_READLINK", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2493 | .op_rsize_bop = nfsd4_readlink_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2494 | }, |
| 2495 | [OP_REMOVE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2496 | .op_func = nfsd4_remove, |
J. Bruce Fields | c856694 | 2011-09-20 08:49:51 -0400 | [diff] [blame] | 2497 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2498 | .op_name = "OP_REMOVE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2499 | .op_rsize_bop = nfsd4_remove_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2500 | }, |
| 2501 | [OP_RENAME] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2502 | .op_func = nfsd4_rename, |
J. Bruce Fields | c856694 | 2011-09-20 08:49:51 -0400 | [diff] [blame] | 2503 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2504 | .op_name = "OP_RENAME", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2505 | .op_rsize_bop = nfsd4_rename_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2506 | }, |
| 2507 | [OP_RENEW] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2508 | .op_func = nfsd4_renew, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2509 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
| 2510 | | OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2511 | .op_name = "OP_RENEW", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2512 | .op_rsize_bop = nfsd4_only_status_rsize, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2513 | |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2514 | }, |
| 2515 | [OP_RESTOREFH] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2516 | .op_func = nfsd4_restorefh, |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 2517 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2518 | | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2519 | .op_name = "OP_RESTOREFH", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2520 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2521 | }, |
| 2522 | [OP_SAVEFH] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2523 | .op_func = nfsd4_savefh, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2524 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2525 | .op_name = "OP_SAVEFH", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2526 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2527 | }, |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2528 | [OP_SECINFO] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2529 | .op_func = nfsd4_secinfo, |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 2530 | .op_release = nfsd4_secinfo_release, |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 2531 | .op_flags = OP_HANDLES_WRONGSEC, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2532 | .op_name = "OP_SECINFO", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2533 | .op_rsize_bop = nfsd4_secinfo_rsize, |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2534 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2535 | [OP_SETATTR] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2536 | .op_func = nfsd4_setattr, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2537 | .op_name = "OP_SETATTR", |
J. Bruce Fields | b7571e4 | 2017-05-06 10:49:21 -0400 | [diff] [blame] | 2538 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME |
| 2539 | | OP_NONTRIVIAL_ERROR_ENCODE, |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2540 | .op_rsize_bop = nfsd4_setattr_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2541 | .op_get_currentstateid = nfsd4_get_setattrstateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2542 | }, |
| 2543 | [OP_SETCLIENTID] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2544 | .op_func = nfsd4_setclientid, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2545 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
J. Bruce Fields | b7571e4 | 2017-05-06 10:49:21 -0400 | [diff] [blame] | 2546 | | OP_MODIFIES_SOMETHING | OP_CACHEME |
| 2547 | | OP_NONTRIVIAL_ERROR_ENCODE, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2548 | .op_name = "OP_SETCLIENTID", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2549 | .op_rsize_bop = nfsd4_setclientid_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2550 | }, |
| 2551 | [OP_SETCLIENTID_CONFIRM] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2552 | .op_func = nfsd4_setclientid_confirm, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2553 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
J. Bruce Fields | c856694 | 2011-09-20 08:49:51 -0400 | [diff] [blame] | 2554 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2555 | .op_name = "OP_SETCLIENTID_CONFIRM", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2556 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2557 | }, |
| 2558 | [OP_VERIFY] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2559 | .op_func = nfsd4_verify, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2560 | .op_name = "OP_VERIFY", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2561 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2562 | }, |
| 2563 | [OP_WRITE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2564 | .op_func = nfsd4_write, |
J. Bruce Fields | c856694 | 2011-09-20 08:49:51 -0400 | [diff] [blame] | 2565 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2566 | .op_name = "OP_WRITE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2567 | .op_rsize_bop = nfsd4_write_rsize, |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2568 | .op_get_currentstateid = nfsd4_get_writestateid, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2569 | }, |
| 2570 | [OP_RELEASE_LOCKOWNER] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2571 | .op_func = nfsd4_release_lockowner, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2572 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
| 2573 | | OP_MODIFIES_SOMETHING, |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2574 | .op_name = "OP_RELEASE_LOCKOWNER", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2575 | .op_rsize_bop = nfsd4_only_status_rsize, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2576 | }, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2577 | |
| 2578 | /* NFSv4.1 operations */ |
| 2579 | [OP_EXCHANGE_ID] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2580 | .op_func = nfsd4_exchange_id, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2581 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
| 2582 | | OP_MODIFIES_SOMETHING, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2583 | .op_name = "OP_EXCHANGE_ID", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2584 | .op_rsize_bop = nfsd4_exchange_id_rsize, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2585 | }, |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2586 | [OP_BACKCHANNEL_CTL] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2587 | .op_func = nfsd4_backchannel_ctl, |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2588 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
| 2589 | .op_name = "OP_BACKCHANNEL_CTL", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2590 | .op_rsize_bop = nfsd4_only_status_rsize, |
J. Bruce Fields | cb73a9f | 2012-11-01 18:09:48 -0400 | [diff] [blame] | 2591 | }, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2592 | [OP_BIND_CONN_TO_SESSION] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2593 | .op_func = nfsd4_bind_conn_to_session, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2594 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
| 2595 | | OP_MODIFIES_SOMETHING, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2596 | .op_name = "OP_BIND_CONN_TO_SESSION", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2597 | .op_rsize_bop = nfsd4_bind_conn_to_session_rsize, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2598 | }, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2599 | [OP_CREATE_SESSION] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2600 | .op_func = nfsd4_create_session, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2601 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
| 2602 | | OP_MODIFIES_SOMETHING, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2603 | .op_name = "OP_CREATE_SESSION", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2604 | .op_rsize_bop = nfsd4_create_session_rsize, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2605 | }, |
| 2606 | [OP_DESTROY_SESSION] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2607 | .op_func = nfsd4_destroy_session, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2608 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
| 2609 | | OP_MODIFIES_SOMETHING, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2610 | .op_name = "OP_DESTROY_SESSION", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2611 | .op_rsize_bop = nfsd4_only_status_rsize, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2612 | }, |
| 2613 | [OP_SEQUENCE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2614 | .op_func = nfsd4_sequence, |
Andy Adamson | f9bb94c4 | 2009-04-03 08:28:12 +0300 | [diff] [blame] | 2615 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2616 | .op_name = "OP_SEQUENCE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2617 | .op_rsize_bop = nfsd4_sequence_rsize, |
Andy Adamson | 069b6ad | 2009-04-03 08:27:58 +0300 | [diff] [blame] | 2618 | }, |
Benny Halevy | 094b5d7 | 2011-06-16 11:39:10 -0400 | [diff] [blame] | 2619 | [OP_DESTROY_CLIENTID] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2620 | .op_func = nfsd4_destroy_clientid, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2621 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
| 2622 | | OP_MODIFIES_SOMETHING, |
Benny Halevy | 094b5d7 | 2011-06-16 11:39:10 -0400 | [diff] [blame] | 2623 | .op_name = "OP_DESTROY_CLIENTID", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2624 | .op_rsize_bop = nfsd4_only_status_rsize, |
Benny Halevy | 094b5d7 | 2011-06-16 11:39:10 -0400 | [diff] [blame] | 2625 | }, |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2626 | [OP_RECLAIM_COMPLETE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2627 | .op_func = nfsd4_reclaim_complete, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2628 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2629 | .op_name = "OP_RECLAIM_COMPLETE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2630 | .op_rsize_bop = nfsd4_only_status_rsize, |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 2631 | }, |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 2632 | [OP_SECINFO_NO_NAME] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2633 | .op_func = nfsd4_secinfo_no_name, |
Eryu Guan | ec572b9 | 2017-09-29 15:01:10 +0800 | [diff] [blame] | 2634 | .op_release = nfsd4_secinfo_no_name_release, |
J. Bruce Fields | 68d9318 | 2011-04-08 17:00:50 -0400 | [diff] [blame] | 2635 | .op_flags = OP_HANDLES_WRONGSEC, |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 2636 | .op_name = "OP_SECINFO_NO_NAME", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2637 | .op_rsize_bop = nfsd4_secinfo_rsize, |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 2638 | }, |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 2639 | [OP_TEST_STATEID] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2640 | .op_func = nfsd4_test_stateid, |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 2641 | .op_flags = ALLOWED_WITHOUT_FH, |
| 2642 | .op_name = "OP_TEST_STATEID", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2643 | .op_rsize_bop = nfsd4_test_stateid_rsize, |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 2644 | }, |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 2645 | [OP_FREE_STATEID] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2646 | .op_func = nfsd4_free_stateid, |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 2647 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 2648 | .op_name = "OP_FREE_STATEID", |
Christoph Hellwig | 57832e7 | 2017-05-08 20:37:33 +0200 | [diff] [blame] | 2649 | .op_get_currentstateid = nfsd4_get_freestateid, |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2650 | .op_rsize_bop = nfsd4_only_status_rsize, |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 2651 | }, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2652 | #ifdef CONFIG_NFSD_PNFS |
| 2653 | [OP_GETDEVICEINFO] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2654 | .op_func = nfsd4_getdeviceinfo, |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 2655 | .op_release = nfsd4_getdeviceinfo_release, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2656 | .op_flags = ALLOWED_WITHOUT_FH, |
| 2657 | .op_name = "OP_GETDEVICEINFO", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2658 | .op_rsize_bop = nfsd4_getdeviceinfo_rsize, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2659 | }, |
| 2660 | [OP_LAYOUTGET] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2661 | .op_func = nfsd4_layoutget, |
J. Bruce Fields | 34b1744c | 2017-05-05 17:09:37 -0400 | [diff] [blame] | 2662 | .op_release = nfsd4_layoutget_release, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2663 | .op_flags = OP_MODIFIES_SOMETHING, |
| 2664 | .op_name = "OP_LAYOUTGET", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2665 | .op_rsize_bop = nfsd4_layoutget_rsize, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2666 | }, |
| 2667 | [OP_LAYOUTCOMMIT] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2668 | .op_func = nfsd4_layoutcommit, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2669 | .op_flags = OP_MODIFIES_SOMETHING, |
| 2670 | .op_name = "OP_LAYOUTCOMMIT", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2671 | .op_rsize_bop = nfsd4_layoutcommit_rsize, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2672 | }, |
| 2673 | [OP_LAYOUTRETURN] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2674 | .op_func = nfsd4_layoutreturn, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2675 | .op_flags = OP_MODIFIES_SOMETHING, |
| 2676 | .op_name = "OP_LAYOUTRETURN", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2677 | .op_rsize_bop = nfsd4_layoutreturn_rsize, |
Christoph Hellwig | 9cf514c | 2014-05-05 13:11:59 +0200 | [diff] [blame] | 2678 | }, |
| 2679 | #endif /* CONFIG_NFSD_PNFS */ |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 2680 | |
| 2681 | /* NFSv4.2 operations */ |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 2682 | [OP_ALLOCATE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2683 | .op_func = nfsd4_allocate, |
Olga Kornievskaia | 03b31f4 | 2018-12-04 14:09:21 -0500 | [diff] [blame] | 2684 | .op_flags = OP_MODIFIES_SOMETHING, |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 2685 | .op_name = "OP_ALLOCATE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2686 | .op_rsize_bop = nfsd4_only_status_rsize, |
Anna Schumaker | 95d871f | 2014-11-07 14:44:26 -0500 | [diff] [blame] | 2687 | }, |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 2688 | [OP_DEALLOCATE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2689 | .op_func = nfsd4_deallocate, |
Olga Kornievskaia | 03b31f4 | 2018-12-04 14:09:21 -0500 | [diff] [blame] | 2690 | .op_flags = OP_MODIFIES_SOMETHING, |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 2691 | .op_name = "OP_DEALLOCATE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2692 | .op_rsize_bop = nfsd4_only_status_rsize, |
Anna Schumaker | b0cb908 | 2014-11-07 14:44:27 -0500 | [diff] [blame] | 2693 | }, |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 2694 | [OP_CLONE] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2695 | .op_func = nfsd4_clone, |
Olga Kornievskaia | 03b31f4 | 2018-12-04 14:09:21 -0500 | [diff] [blame] | 2696 | .op_flags = OP_MODIFIES_SOMETHING, |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 2697 | .op_name = "OP_CLONE", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2698 | .op_rsize_bop = nfsd4_only_status_rsize, |
Christoph Hellwig | ffa0160 | 2015-12-03 12:59:52 +0100 | [diff] [blame] | 2699 | }, |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 2700 | [OP_COPY] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2701 | .op_func = nfsd4_copy, |
Olga Kornievskaia | 03b31f4 | 2018-12-04 14:09:21 -0500 | [diff] [blame] | 2702 | .op_flags = OP_MODIFIES_SOMETHING, |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 2703 | .op_name = "OP_COPY", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2704 | .op_rsize_bop = nfsd4_copy_rsize, |
Anna Schumaker | 29ae7f9 | 2016-09-07 15:57:30 -0400 | [diff] [blame] | 2705 | }, |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 2706 | [OP_SEEK] = { |
Christoph Hellwig | eb69853 | 2017-05-08 20:58:35 +0200 | [diff] [blame] | 2707 | .op_func = nfsd4_seek, |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 2708 | .op_name = "OP_SEEK", |
Christoph Hellwig | 1c12263 | 2017-05-08 20:42:10 +0200 | [diff] [blame] | 2709 | .op_rsize_bop = nfsd4_seek_rsize, |
Anna Schumaker | 24bab49 | 2014-09-26 13:58:27 -0400 | [diff] [blame] | 2710 | }, |
Olga Kornievskaia | 6308bc9 | 2018-07-20 18:19:18 -0400 | [diff] [blame] | 2711 | [OP_OFFLOAD_STATUS] = { |
| 2712 | .op_func = nfsd4_offload_status, |
| 2713 | .op_name = "OP_OFFLOAD_STATUS", |
| 2714 | .op_rsize_bop = nfsd4_offload_status_rsize, |
| 2715 | }, |
Olga Kornievskaia | 885e2bf | 2018-07-20 18:19:19 -0400 | [diff] [blame] | 2716 | [OP_OFFLOAD_CANCEL] = { |
| 2717 | .op_func = nfsd4_offload_cancel, |
| 2718 | .op_flags = OP_MODIFIES_SOMETHING, |
| 2719 | .op_name = "OP_OFFLOAD_CANCEL", |
| 2720 | .op_rsize_bop = nfsd4_only_status_rsize, |
| 2721 | }, |
J.Bruce Fields | b591480 | 2006-12-13 00:35:38 -0800 | [diff] [blame] | 2722 | }; |
| 2723 | |
Andrew Elble | ed94164 | 2016-06-15 12:52:09 -0400 | [diff] [blame] | 2724 | /** |
| 2725 | * nfsd4_spo_must_allow - Determine if the compound op contains an |
| 2726 | * operation that is allowed to be sent with machine credentials |
| 2727 | * |
| 2728 | * @rqstp: a pointer to the struct svc_rqst |
| 2729 | * |
| 2730 | * Checks to see if the compound contains a spo_must_allow op |
| 2731 | * and confirms that it was sent with the proper machine creds. |
| 2732 | */ |
| 2733 | |
| 2734 | bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) |
| 2735 | { |
| 2736 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
| 2737 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; |
| 2738 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; |
| 2739 | struct nfsd4_compound_state *cstate = &resp->cstate; |
| 2740 | struct nfs4_op_map *allow = &cstate->clp->cl_spo_must_allow; |
| 2741 | u32 opiter; |
| 2742 | |
| 2743 | if (!cstate->minorversion) |
| 2744 | return false; |
| 2745 | |
| 2746 | if (cstate->spo_must_allowed == true) |
| 2747 | return true; |
| 2748 | |
| 2749 | opiter = resp->opcnt; |
| 2750 | while (opiter < argp->opcnt) { |
| 2751 | this = &argp->ops[opiter++]; |
| 2752 | if (test_bit(this->opnum, allow->u.longs) && |
| 2753 | cstate->clp->cl_mach_cred && |
| 2754 | nfsd4_mach_creds_match(cstate->clp, rqstp)) { |
| 2755 | cstate->spo_must_allowed = true; |
| 2756 | return true; |
| 2757 | } |
| 2758 | } |
| 2759 | cstate->spo_must_allowed = false; |
| 2760 | return false; |
| 2761 | } |
| 2762 | |
J. Bruce Fields | 4f0cefb | 2014-03-11 15:39:13 -0400 | [diff] [blame] | 2763 | int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) |
| 2764 | { |
Olga Kornievskaia | 05b7278 | 2017-03-23 14:36:20 -0400 | [diff] [blame] | 2765 | if (op->opnum == OP_ILLEGAL || op->status == nfserr_notsupp) |
J. Bruce Fields | 4f0cefb | 2014-03-11 15:39:13 -0400 | [diff] [blame] | 2766 | return op_encode_hdr_size * sizeof(__be32); |
Kinglong Mee | 2282cd2 | 2017-02-03 22:36:00 +0800 | [diff] [blame] | 2767 | |
| 2768 | BUG_ON(OPDESC(op)->op_rsize_bop == NULL); |
| 2769 | return OPDESC(op)->op_rsize_bop(rqstp, op); |
J. Bruce Fields | 4f0cefb | 2014-03-11 15:39:13 -0400 | [diff] [blame] | 2770 | } |
| 2771 | |
J. Bruce Fields | 07d1f80 | 2014-03-06 20:39:29 -0500 | [diff] [blame] | 2772 | void warn_on_nonidempotent_op(struct nfsd4_op *op) |
| 2773 | { |
| 2774 | if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) { |
| 2775 | pr_err("unable to encode reply to nonidempotent op %d (%s)\n", |
| 2776 | op->opnum, nfsd4_op_name(op->opnum)); |
| 2777 | WARN_ON_ONCE(1); |
| 2778 | } |
| 2779 | } |
| 2780 | |
Adrian Bunk | f1c7f79 | 2008-08-08 19:26:42 +0300 | [diff] [blame] | 2781 | static const char *nfsd4_op_name(unsigned opnum) |
Benny Halevy | b001a1b | 2008-07-02 11:15:03 +0300 | [diff] [blame] | 2782 | { |
| 2783 | if (opnum < ARRAY_SIZE(nfsd4_ops)) |
| 2784 | return nfsd4_ops[opnum].op_name; |
| 2785 | return "unknown_operation"; |
| 2786 | } |
| 2787 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2788 | #define nfsd4_voidres nfsd4_voidargs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | struct nfsd4_voidargs { int dummy; }; |
| 2790 | |
Christoph Hellwig | 860bda2 | 2017-05-12 16:11:49 +0200 | [diff] [blame] | 2791 | static const struct svc_procedure nfsd_procedures4[2] = { |
Yu Zhiguo | 0a93a47 | 2009-05-19 14:09:54 +0800 | [diff] [blame] | 2792 | [NFSPROC4_NULL] = { |
Christoph Hellwig | f7235b6 | 2017-05-08 17:59:13 +0200 | [diff] [blame] | 2793 | .pc_func = nfsd4_proc_null, |
Christoph Hellwig | 63f8de3 | 2017-05-08 19:42:02 +0200 | [diff] [blame] | 2794 | .pc_encode = nfs4svc_encode_voidres, |
Yu Zhiguo | 0a93a47 | 2009-05-19 14:09:54 +0800 | [diff] [blame] | 2795 | .pc_argsize = sizeof(struct nfsd4_voidargs), |
| 2796 | .pc_ressize = sizeof(struct nfsd4_voidres), |
| 2797 | .pc_cachetype = RC_NOCACHE, |
| 2798 | .pc_xdrressize = 1, |
| 2799 | }, |
| 2800 | [NFSPROC4_COMPOUND] = { |
Christoph Hellwig | f7235b6 | 2017-05-08 17:59:13 +0200 | [diff] [blame] | 2801 | .pc_func = nfsd4_proc_compound, |
Christoph Hellwig | 026fec7 | 2017-05-08 19:01:48 +0200 | [diff] [blame] | 2802 | .pc_decode = nfs4svc_decode_compoundargs, |
Christoph Hellwig | 63f8de3 | 2017-05-08 19:42:02 +0200 | [diff] [blame] | 2803 | .pc_encode = nfs4svc_encode_compoundres, |
Yu Zhiguo | 0a93a47 | 2009-05-19 14:09:54 +0800 | [diff] [blame] | 2804 | .pc_argsize = sizeof(struct nfsd4_compoundargs), |
| 2805 | .pc_ressize = sizeof(struct nfsd4_compoundres), |
J. Bruce Fields | 3e98abf | 2011-07-16 17:15:10 -0400 | [diff] [blame] | 2806 | .pc_release = nfsd4_release_compoundargs, |
Yu Zhiguo | 0a93a47 | 2009-05-19 14:09:54 +0800 | [diff] [blame] | 2807 | .pc_cachetype = RC_NOCACHE, |
| 2808 | .pc_xdrressize = NFSD_BUFSIZE/4, |
| 2809 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | }; |
| 2811 | |
Christoph Hellwig | 7fd38af | 2017-05-08 23:40:27 +0200 | [diff] [blame] | 2812 | static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures4)]; |
Christoph Hellwig | e967918 | 2017-05-12 16:21:37 +0200 | [diff] [blame] | 2813 | const struct svc_version nfsd_version4 = { |
Jeff Layton | 5283b03 | 2017-02-24 13:25:24 -0500 | [diff] [blame] | 2814 | .vs_vers = 4, |
| 2815 | .vs_nproc = 2, |
| 2816 | .vs_proc = nfsd_procedures4, |
Christoph Hellwig | 7fd38af | 2017-05-08 23:40:27 +0200 | [diff] [blame] | 2817 | .vs_count = nfsd_count3, |
Jeff Layton | 5283b03 | 2017-02-24 13:25:24 -0500 | [diff] [blame] | 2818 | .vs_dispatch = nfsd_dispatch, |
| 2819 | .vs_xdrsize = NFS4_SVC_XDRSIZE, |
| 2820 | .vs_rpcb_optnl = true, |
| 2821 | .vs_need_cong_ctrl = true, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2822 | }; |
| 2823 | |
| 2824 | /* |
| 2825 | * Local variables: |
| 2826 | * c-basic-offset: 8 |
| 2827 | * End: |
| 2828 | */ |