4 * Copyright (C) International Business Machines Corp., 2002,2010
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include <linux/stat.h>
23 #include <linux/slab.h>
24 #include <linux/pagemap.h>
25 #include <linux/freezer.h>
26 #include <asm/div64.h>
30 #include "cifsproto.h"
31 #include "cifs_debug.h"
32 #include "cifs_fs_sb.h"
33 #include "cifs_unicode.h"
37 static void cifs_set_ops(struct inode *inode)
39 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
41 switch (inode->i_mode & S_IFMT) {
43 inode->i_op = &cifs_file_inode_ops;
44 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
45 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
46 inode->i_fop = &cifs_file_direct_nobrl_ops;
48 inode->i_fop = &cifs_file_direct_ops;
49 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) {
50 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
51 inode->i_fop = &cifs_file_strict_nobrl_ops;
53 inode->i_fop = &cifs_file_strict_ops;
54 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
55 inode->i_fop = &cifs_file_nobrl_ops;
56 else { /* not direct, send byte range locks */
57 inode->i_fop = &cifs_file_ops;
60 /* check if server can support readpages */
61 if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf <
62 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
63 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
65 inode->i_data.a_ops = &cifs_addr_ops;
68 #ifdef CONFIG_CIFS_DFS_UPCALL
69 if (IS_AUTOMOUNT(inode)) {
70 inode->i_op = &cifs_dfs_referral_inode_operations;
72 #else /* NO DFS support, treat as a directory */
75 inode->i_op = &cifs_dir_inode_ops;
76 inode->i_fop = &cifs_dir_ops;
80 inode->i_op = &cifs_symlink_inode_ops;
83 init_special_inode(inode, inode->i_mode, inode->i_rdev);
88 /* check inode attributes against fattr. If they don't match, tag the
89 * inode for cache invalidation
92 cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
94 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
96 cifs_dbg(FYI, "%s: revalidating inode %llu\n",
97 __func__, cifs_i->uniqueid);
99 if (inode->i_state & I_NEW) {
100 cifs_dbg(FYI, "%s: inode %llu is new\n",
101 __func__, cifs_i->uniqueid);
105 /* don't bother with revalidation if we have an oplock */
106 if (CIFS_CACHE_READ(cifs_i)) {
107 cifs_dbg(FYI, "%s: inode %llu is oplocked\n",
108 __func__, cifs_i->uniqueid);
112 /* revalidate if mtime or size have changed */
113 if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) &&
114 cifs_i->server_eof == fattr->cf_eof) {
115 cifs_dbg(FYI, "%s: inode %llu is unchanged\n",
116 __func__, cifs_i->uniqueid);
120 cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n",
121 __func__, cifs_i->uniqueid);
122 set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags);
126 * copy nlink to the inode, unless it wasn't provided. Provide
127 * sane values if we don't have an existing one and none was provided
130 cifs_nlink_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
133 * if we're in a situation where we can't trust what we
134 * got from the server (readdir, some non-unix cases)
135 * fake reasonable values
137 if (fattr->cf_flags & CIFS_FATTR_UNKNOWN_NLINK) {
138 /* only provide fake values on a new inode */
139 if (inode->i_state & I_NEW) {
140 if (fattr->cf_cifsattrs & ATTR_DIRECTORY)
148 /* we trust the server, so update it */
149 set_nlink(inode, fattr->cf_nlink);
152 /* populate an inode with info from a cifs_fattr struct */
154 cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
156 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
157 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
159 cifs_revalidate_cache(inode, fattr);
161 spin_lock(&inode->i_lock);
162 inode->i_atime = fattr->cf_atime;
163 inode->i_mtime = fattr->cf_mtime;
164 inode->i_ctime = fattr->cf_ctime;
165 inode->i_rdev = fattr->cf_rdev;
166 cifs_nlink_fattr_to_inode(inode, fattr);
167 inode->i_uid = fattr->cf_uid;
168 inode->i_gid = fattr->cf_gid;
170 /* if dynperm is set, don't clobber existing mode */
171 if (inode->i_state & I_NEW ||
172 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM))
173 inode->i_mode = fattr->cf_mode;
175 cifs_i->cifsAttrs = fattr->cf_cifsattrs;
177 if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
180 cifs_i->time = jiffies;
182 if (fattr->cf_flags & CIFS_FATTR_DELETE_PENDING)
183 set_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
185 clear_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
187 cifs_i->server_eof = fattr->cf_eof;
189 * Can't safely change the file size here if the client is writing to
190 * it due to potential races.
192 if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) {
193 i_size_write(inode, fattr->cf_eof);
196 * i_blocks is not related to (i_size / i_blksize),
197 * but instead 512 byte (2**9) size is required for
198 * calculating num blocks.
200 inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9;
202 spin_unlock(&inode->i_lock);
204 if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL)
205 inode->i_flags |= S_AUTOMOUNT;
206 if (inode->i_state & I_NEW)
211 cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr)
213 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
215 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
218 fattr->cf_uniqueid = iunique(sb, ROOT_I);
221 /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */
223 cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info,
224 struct cifs_sb_info *cifs_sb)
226 memset(fattr, 0, sizeof(*fattr));
227 fattr->cf_uniqueid = le64_to_cpu(info->UniqueId);
228 fattr->cf_bytes = le64_to_cpu(info->NumOfBytes);
229 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
231 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
232 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime);
233 fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange);
234 fattr->cf_mode = le64_to_cpu(info->Permissions);
237 * Since we set the inode type below we need to mask off
238 * to avoid strange results if bits set above.
240 fattr->cf_mode &= ~S_IFMT;
241 switch (le32_to_cpu(info->Type)) {
243 fattr->cf_mode |= S_IFREG;
244 fattr->cf_dtype = DT_REG;
247 fattr->cf_mode |= S_IFLNK;
248 fattr->cf_dtype = DT_LNK;
251 fattr->cf_mode |= S_IFDIR;
252 fattr->cf_dtype = DT_DIR;
255 fattr->cf_mode |= S_IFCHR;
256 fattr->cf_dtype = DT_CHR;
257 fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor),
258 le64_to_cpu(info->DevMinor) & MINORMASK);
261 fattr->cf_mode |= S_IFBLK;
262 fattr->cf_dtype = DT_BLK;
263 fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor),
264 le64_to_cpu(info->DevMinor) & MINORMASK);
267 fattr->cf_mode |= S_IFIFO;
268 fattr->cf_dtype = DT_FIFO;
271 fattr->cf_mode |= S_IFSOCK;
272 fattr->cf_dtype = DT_SOCK;
275 /* safest to call it a file if we do not know */
276 fattr->cf_mode |= S_IFREG;
277 fattr->cf_dtype = DT_REG;
278 cifs_dbg(FYI, "unknown type %d\n", le32_to_cpu(info->Type));
282 fattr->cf_uid = cifs_sb->mnt_uid;
283 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) {
284 u64 id = le64_to_cpu(info->Uid);
285 if (id < ((uid_t)-1)) {
286 kuid_t uid = make_kuid(&init_user_ns, id);
292 fattr->cf_gid = cifs_sb->mnt_gid;
293 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) {
294 u64 id = le64_to_cpu(info->Gid);
295 if (id < ((gid_t)-1)) {
296 kgid_t gid = make_kgid(&init_user_ns, id);
302 fattr->cf_nlink = le64_to_cpu(info->Nlinks);
306 * Fill a cifs_fattr struct with fake inode info.
308 * Needed to setup cifs_fattr data for the directory which is the
309 * junction to the new submount (ie to setup the fake directory
310 * which represents a DFS referral).
313 cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb)
315 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
317 cifs_dbg(FYI, "creating fake fattr for DFS referral\n");
319 memset(fattr, 0, sizeof(*fattr));
320 fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU;
321 fattr->cf_uid = cifs_sb->mnt_uid;
322 fattr->cf_gid = cifs_sb->mnt_gid;
323 fattr->cf_atime = CURRENT_TIME;
324 fattr->cf_ctime = CURRENT_TIME;
325 fattr->cf_mtime = CURRENT_TIME;
327 fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL;
331 cifs_get_file_info_unix(struct file *filp)
335 FILE_UNIX_BASIC_INFO find_data;
336 struct cifs_fattr fattr;
337 struct inode *inode = file_inode(filp);
338 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
339 struct cifsFileInfo *cfile = filp->private_data;
340 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
343 rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->fid.netfid, &find_data);
345 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
346 } else if (rc == -EREMOTE) {
347 cifs_create_dfs_fattr(&fattr, inode->i_sb);
351 cifs_fattr_to_inode(inode, &fattr);
356 int cifs_get_inode_info_unix(struct inode **pinode,
357 const unsigned char *full_path,
358 struct super_block *sb, unsigned int xid)
361 FILE_UNIX_BASIC_INFO find_data;
362 struct cifs_fattr fattr;
363 struct cifs_tcon *tcon;
364 struct tcon_link *tlink;
365 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
367 cifs_dbg(FYI, "Getting info on %s\n", full_path);
369 tlink = cifs_sb_tlink(cifs_sb);
371 return PTR_ERR(tlink);
372 tcon = tlink_tcon(tlink);
374 /* could have done a find first instead but this returns more info */
375 rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data,
376 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
377 CIFS_MOUNT_MAP_SPECIAL_CHR);
378 cifs_put_tlink(tlink);
381 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
382 } else if (rc == -EREMOTE) {
383 cifs_create_dfs_fattr(&fattr, sb);
389 /* check for Minshall+French symlinks */
390 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
391 int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
394 cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
397 if (*pinode == NULL) {
399 cifs_fill_uniqueid(sb, &fattr);
400 *pinode = cifs_iget(sb, &fattr);
404 /* we already have inode, update it */
405 cifs_fattr_to_inode(*pinode, &fattr);
412 cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
413 struct cifs_sb_info *cifs_sb, unsigned int xid)
417 struct tcon_link *tlink;
418 struct cifs_tcon *tcon;
420 struct cifs_open_parms oparms;
421 struct cifs_io_parms io_parms;
423 unsigned int bytes_read;
425 int buf_type = CIFS_NO_BUFFER;
429 fattr->cf_mode &= ~S_IFMT;
431 if (fattr->cf_eof == 0) {
432 fattr->cf_mode |= S_IFIFO;
433 fattr->cf_dtype = DT_FIFO;
435 } else if (fattr->cf_eof < 8) {
436 fattr->cf_mode |= S_IFREG;
437 fattr->cf_dtype = DT_REG;
438 return -EINVAL; /* EOPNOTSUPP? */
441 tlink = cifs_sb_tlink(cifs_sb);
443 return PTR_ERR(tlink);
444 tcon = tlink_tcon(tlink);
447 oparms.cifs_sb = cifs_sb;
448 oparms.desired_access = GENERIC_READ;
449 oparms.create_options = CREATE_NOT_DIR;
450 oparms.disposition = FILE_OPEN;
453 oparms.reconnect = false;
455 if (tcon->ses->server->oplocks)
459 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, NULL);
461 cifs_dbg(FYI, "check sfu type of %s, open rc = %d\n", path, rc);
462 cifs_put_tlink(tlink);
467 io_parms.netfid = fid.netfid;
468 io_parms.pid = current->tgid;
469 io_parms.tcon = tcon;
471 io_parms.length = 24;
473 rc = tcon->ses->server->ops->sync_read(xid, &fid, &io_parms,
474 &bytes_read, &pbuf, &buf_type);
475 if ((rc == 0) && (bytes_read >= 8)) {
476 if (memcmp("IntxBLK", pbuf, 8) == 0) {
477 cifs_dbg(FYI, "Block device\n");
478 fattr->cf_mode |= S_IFBLK;
479 fattr->cf_dtype = DT_BLK;
480 if (bytes_read == 24) {
481 /* we have enough to decode dev num */
482 __u64 mjr; /* major */
483 __u64 mnr; /* minor */
484 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
485 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
486 fattr->cf_rdev = MKDEV(mjr, mnr);
488 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
489 cifs_dbg(FYI, "Char device\n");
490 fattr->cf_mode |= S_IFCHR;
491 fattr->cf_dtype = DT_CHR;
492 if (bytes_read == 24) {
493 /* we have enough to decode dev num */
494 __u64 mjr; /* major */
495 __u64 mnr; /* minor */
496 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
497 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
498 fattr->cf_rdev = MKDEV(mjr, mnr);
500 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
501 cifs_dbg(FYI, "Symlink\n");
502 fattr->cf_mode |= S_IFLNK;
503 fattr->cf_dtype = DT_LNK;
505 fattr->cf_mode |= S_IFREG; /* file? */
506 fattr->cf_dtype = DT_REG;
510 fattr->cf_mode |= S_IFREG; /* then it is a file */
511 fattr->cf_dtype = DT_REG;
512 rc = -EOPNOTSUPP; /* or some unknown SFU type */
515 tcon->ses->server->ops->close(xid, tcon, &fid);
516 cifs_put_tlink(tlink);
520 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
523 * Fetch mode bits as provided by SFU.
525 * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ?
527 static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
528 struct cifs_sb_info *cifs_sb, unsigned int xid)
530 #ifdef CONFIG_CIFS_XATTR
534 struct tcon_link *tlink;
535 struct cifs_tcon *tcon;
537 tlink = cifs_sb_tlink(cifs_sb);
539 return PTR_ERR(tlink);
540 tcon = tlink_tcon(tlink);
542 if (tcon->ses->server->ops->query_all_EAs == NULL) {
543 cifs_put_tlink(tlink);
547 rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path,
548 "SETFILEBITS", ea_value, 4 /* size of buf */,
550 cifs_remap(cifs_sb));
551 cifs_put_tlink(tlink);
555 mode = le32_to_cpu(*((__le32 *)ea_value));
556 fattr->cf_mode &= ~SFBITS_MASK;
557 cifs_dbg(FYI, "special bits 0%o org mode 0%o\n",
558 mode, fattr->cf_mode);
559 fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode;
560 cifs_dbg(FYI, "special mode bits 0%o\n", mode);
569 /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
571 cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
572 struct cifs_sb_info *cifs_sb, bool adjust_tz,
575 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
577 memset(fattr, 0, sizeof(*fattr));
578 fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
579 if (info->DeletePending)
580 fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING;
582 if (info->LastAccessTime)
583 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
585 fattr->cf_atime = CURRENT_TIME;
587 fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
588 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
591 fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
592 fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
595 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
596 fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
597 fattr->cf_createtime = le64_to_cpu(info->CreationTime);
599 fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
602 fattr->cf_mode = S_IFLNK;
603 fattr->cf_dtype = DT_LNK;
604 } else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
605 fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
606 fattr->cf_dtype = DT_DIR;
608 * Server can return wrong NumberOfLinks value for directories
609 * when Unix extensions are disabled - fake it.
612 fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
614 fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
615 fattr->cf_dtype = DT_REG;
617 /* clear write bits if ATTR_READONLY is set */
618 if (fattr->cf_cifsattrs & ATTR_READONLY)
619 fattr->cf_mode &= ~(S_IWUGO);
622 * Don't accept zero nlink from non-unix servers unless
623 * delete is pending. Instead mark it as unknown.
625 if ((fattr->cf_nlink < 1) && !tcon->unix_ext &&
626 !info->DeletePending) {
627 cifs_dbg(1, "bogus file nlink value %u\n",
629 fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
633 fattr->cf_uid = cifs_sb->mnt_uid;
634 fattr->cf_gid = cifs_sb->mnt_gid;
638 cifs_get_file_info(struct file *filp)
642 FILE_ALL_INFO find_data;
643 struct cifs_fattr fattr;
644 struct inode *inode = file_inode(filp);
645 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
646 struct cifsFileInfo *cfile = filp->private_data;
647 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
648 struct TCP_Server_Info *server = tcon->ses->server;
650 if (!server->ops->query_file_info)
654 rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data);
657 cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false,
661 cifs_create_dfs_fattr(&fattr, inode->i_sb);
667 * FIXME: legacy server -- fall back to path-based call?
668 * for now, just skip revalidating and mark inode for
672 CIFS_I(inode)->time = 0;
678 * don't bother with SFU junk here -- just mark inode as needing
681 fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
682 fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
683 cifs_fattr_to_inode(inode, &fattr);
690 cifs_get_inode_info(struct inode **inode, const char *full_path,
691 FILE_ALL_INFO *data, struct super_block *sb, int xid,
692 const struct cifs_fid *fid)
694 bool validinum = false;
696 int rc = 0, tmprc = ENOSYS;
697 struct cifs_tcon *tcon;
698 struct TCP_Server_Info *server;
699 struct tcon_link *tlink;
700 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
702 bool adjust_tz = false;
703 struct cifs_fattr fattr;
704 struct cifs_search_info *srchinf = NULL;
705 bool symlink = false;
707 tlink = cifs_sb_tlink(cifs_sb);
709 return PTR_ERR(tlink);
710 tcon = tlink_tcon(tlink);
711 server = tcon->ses->server;
713 cifs_dbg(FYI, "Getting info on %s\n", full_path);
715 if ((data == NULL) && (*inode != NULL)) {
716 if (CIFS_CACHE_READ(CIFS_I(*inode))) {
717 cifs_dbg(FYI, "No need to revalidate cached inode sizes\n");
722 /* if inode info is not passed, get it from server */
724 if (!server->ops->query_path_info) {
728 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
733 data = (FILE_ALL_INFO *)buf;
734 rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
735 data, &adjust_tz, &symlink);
739 cifs_all_info_to_fattr(&fattr, data, cifs_sb, adjust_tz,
741 } else if (rc == -EREMOTE) {
742 cifs_create_dfs_fattr(&fattr, sb);
744 } else if (rc == -EACCES && backup_cred(cifs_sb)) {
745 srchinf = kzalloc(sizeof(struct cifs_search_info),
747 if (srchinf == NULL) {
752 srchinf->endOfSearch = false;
753 srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
755 srchflgs = CIFS_SEARCH_CLOSE_ALWAYS |
756 CIFS_SEARCH_CLOSE_AT_END |
757 CIFS_SEARCH_BACKUP_SEARCH;
759 rc = CIFSFindFirst(xid, tcon, full_path,
760 cifs_sb, NULL, srchflgs, srchinf, false);
763 (FILE_ALL_INFO *)srchinf->srch_entries_start;
765 cifs_dir_info_to_fattr(&fattr,
766 (FILE_DIRECTORY_INFO *)data, cifs_sb);
767 fattr.cf_uniqueid = le64_to_cpu(
768 ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId);
771 cifs_buf_release(srchinf->ntwrk_buf_start);
778 * If an inode wasn't passed in, then get the inode number
780 * Is an i_ino of zero legal? Can we use that to check if the server
781 * supports returning inode numbers? Are there other sanity checks we
782 * can use to ensure that the server is really filling in that field?
784 if (*inode == NULL) {
785 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
786 if (validinum == false) {
787 if (server->ops->get_srv_inum)
788 tmprc = server->ops->get_srv_inum(xid,
789 tcon, cifs_sb, full_path,
790 &fattr.cf_uniqueid, data);
792 cifs_dbg(FYI, "GetSrvInodeNum rc %d\n",
794 fattr.cf_uniqueid = iunique(sb, ROOT_I);
795 cifs_autodisable_serverino(cifs_sb);
799 fattr.cf_uniqueid = iunique(sb, ROOT_I);
801 fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
803 /* query for SFU type info if supported and needed */
804 if (fattr.cf_cifsattrs & ATTR_SYSTEM &&
805 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
806 tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid);
808 cifs_dbg(FYI, "cifs_sfu_type failed: %d\n", tmprc);
811 #ifdef CONFIG_CIFS_ACL
812 /* fill in 0777 bits from ACL */
813 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
814 rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, full_path, fid);
816 cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n",
821 #endif /* CONFIG_CIFS_ACL */
823 /* fill in remaining high mode bits e.g. SUID, VTX */
824 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
825 cifs_sfu_mode(&fattr, full_path, cifs_sb, xid);
827 /* check for Minshall+French symlinks */
828 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
829 tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
832 cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
836 *inode = cifs_iget(sb, &fattr);
840 cifs_fattr_to_inode(*inode, &fattr);
845 cifs_put_tlink(tlink);
849 static const struct inode_operations cifs_ipc_inode_ops = {
850 .lookup = cifs_lookup,
854 cifs_find_inode(struct inode *inode, void *opaque)
856 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
858 /* don't match inode with different uniqueid */
859 if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid)
862 /* use createtime like an i_generation field */
863 if (CIFS_I(inode)->createtime != fattr->cf_createtime)
866 /* don't match inode of different type */
867 if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
870 /* if it's not a directory or has no dentries, then flag it */
871 if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry))
872 fattr->cf_flags |= CIFS_FATTR_INO_COLLISION;
878 cifs_init_inode(struct inode *inode, void *opaque)
880 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
882 CIFS_I(inode)->uniqueid = fattr->cf_uniqueid;
883 CIFS_I(inode)->createtime = fattr->cf_createtime;
888 * walk dentry list for an inode and report whether it has aliases that
889 * are hashed. We use this to determine if a directory inode can actually
893 inode_has_hashed_dentries(struct inode *inode)
895 struct dentry *dentry;
897 spin_lock(&inode->i_lock);
898 hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
899 if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
900 spin_unlock(&inode->i_lock);
904 spin_unlock(&inode->i_lock);
908 /* Given fattrs, get a corresponding inode */
910 cifs_iget(struct super_block *sb, struct cifs_fattr *fattr)
916 cifs_dbg(FYI, "looking for uniqueid=%llu\n", fattr->cf_uniqueid);
918 /* hash down to 32-bits on 32-bit arch */
919 hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid);
921 inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr);
923 /* was there a potentially problematic inode collision? */
924 if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) {
925 fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION;
927 if (inode_has_hashed_dentries(inode)) {
928 cifs_autodisable_serverino(CIFS_SB(sb));
930 fattr->cf_uniqueid = iunique(sb, ROOT_I);
931 goto retry_iget5_locked;
935 cifs_fattr_to_inode(inode, fattr);
936 if (sb->s_flags & MS_NOATIME)
937 inode->i_flags |= S_NOATIME | S_NOCMTIME;
938 if (inode->i_state & I_NEW) {
940 if (S_ISREG(inode->i_mode))
941 inode->i_data.backing_dev_info = sb->s_bdi;
942 #ifdef CONFIG_CIFS_FSCACHE
943 /* initialize per-inode cache cookie pointer */
944 CIFS_I(inode)->fscache = NULL;
946 unlock_new_inode(inode);
953 /* gets root inode */
954 struct inode *cifs_root_iget(struct super_block *sb)
957 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
958 struct inode *inode = NULL;
960 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
963 if (tcon->unix_ext) {
964 rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
965 /* some servers mistakenly claim POSIX support */
966 if (rc != -EOPNOTSUPP)
968 cifs_dbg(VFS, "server does not support POSIX extensions");
969 tcon->unix_ext = false;
972 rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
980 #ifdef CONFIG_CIFS_FSCACHE
981 /* populate tcon->resource_id */
982 tcon->resource_id = CIFS_I(inode)->uniqueid;
985 if (rc && tcon->ipc) {
986 cifs_dbg(FYI, "ipc connection - fake read inode\n");
987 spin_lock(&inode->i_lock);
988 inode->i_mode |= S_IFDIR;
990 inode->i_op = &cifs_ipc_inode_ops;
991 inode->i_fop = &simple_dir_operations;
992 inode->i_uid = cifs_sb->mnt_uid;
993 inode->i_gid = cifs_sb->mnt_gid;
994 spin_unlock(&inode->i_lock);
1001 /* can not call macro free_xid here since in a void func
1002 * TODO: This is no longer true
1009 cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
1010 char *full_path, __u32 dosattr)
1012 bool set_time = false;
1013 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1014 struct TCP_Server_Info *server;
1015 FILE_BASIC_INFO info_buf;
1020 server = cifs_sb_master_tcon(cifs_sb)->ses->server;
1021 if (!server->ops->set_file_info)
1024 if (attrs->ia_valid & ATTR_ATIME) {
1026 info_buf.LastAccessTime =
1027 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1029 info_buf.LastAccessTime = 0;
1031 if (attrs->ia_valid & ATTR_MTIME) {
1033 info_buf.LastWriteTime =
1034 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1036 info_buf.LastWriteTime = 0;
1039 * Samba throws this field away, but windows may actually use it.
1040 * Do not set ctime unless other time stamps are changed explicitly
1041 * (i.e. by utimes()) since we would then have a mix of client and
1044 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1045 cifs_dbg(FYI, "CIFS - CTIME changed\n");
1046 info_buf.ChangeTime =
1047 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1049 info_buf.ChangeTime = 0;
1051 info_buf.CreationTime = 0; /* don't change */
1052 info_buf.Attributes = cpu_to_le32(dosattr);
1054 return server->ops->set_file_info(inode, full_path, &info_buf, xid);
1058 * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
1059 * and rename it to a random name that hopefully won't conflict with
1063 cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
1064 const unsigned int xid)
1068 struct cifs_fid fid;
1069 struct cifs_open_parms oparms;
1070 struct inode *inode = dentry->d_inode;
1071 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1072 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1073 struct tcon_link *tlink;
1074 struct cifs_tcon *tcon;
1075 __u32 dosattr, origattr;
1076 FILE_BASIC_INFO *info_buf = NULL;
1078 tlink = cifs_sb_tlink(cifs_sb);
1080 return PTR_ERR(tlink);
1081 tcon = tlink_tcon(tlink);
1084 * We cannot rename the file if the server doesn't support
1085 * CAP_INFOLEVEL_PASSTHRU
1087 if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
1093 oparms.cifs_sb = cifs_sb;
1094 oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
1095 oparms.create_options = CREATE_NOT_DIR;
1096 oparms.disposition = FILE_OPEN;
1097 oparms.path = full_path;
1099 oparms.reconnect = false;
1101 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1105 origattr = cifsInode->cifsAttrs;
1107 origattr |= ATTR_NORMAL;
1109 dosattr = origattr & ~ATTR_READONLY;
1111 dosattr |= ATTR_NORMAL;
1112 dosattr |= ATTR_HIDDEN;
1114 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1115 if (dosattr != origattr) {
1116 info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
1117 if (info_buf == NULL) {
1121 info_buf->Attributes = cpu_to_le32(dosattr);
1122 rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1124 /* although we would like to mark the file hidden
1125 if that fails we will still try to rename it */
1127 cifsInode->cifsAttrs = dosattr;
1129 dosattr = origattr; /* since not able to change them */
1132 /* rename the file */
1133 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
1135 cifs_remap(cifs_sb));
1141 /* try to set DELETE_ON_CLOSE */
1142 if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
1143 rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
1146 * some samba versions return -ENOENT when we try to set the
1147 * file disposition here. Likely a samba bug, but work around
1148 * it for now. This means that some cifsXXX files may hang
1149 * around after they shouldn't.
1151 * BB: remove this hack after more servers have the fix
1159 set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
1163 CIFSSMBClose(xid, tcon, fid.netfid);
1166 cifs_put_tlink(tlink);
1170 * reset everything back to the original state. Don't bother
1171 * dealing with errors here since we can't do anything about
1175 CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
1176 cifs_sb->local_nls, cifs_remap(cifs_sb));
1178 if (dosattr != origattr) {
1179 info_buf->Attributes = cpu_to_le32(origattr);
1180 if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1182 cifsInode->cifsAttrs = origattr;
1188 /* copied from fs/nfs/dir.c with small changes */
1190 cifs_drop_nlink(struct inode *inode)
1192 spin_lock(&inode->i_lock);
1193 if (inode->i_nlink > 0)
1195 spin_unlock(&inode->i_lock);
1199 * If dentry->d_inode is null (usually meaning the cached dentry
1200 * is a negative dentry) then we would attempt a standard SMB delete, but
1201 * if that fails we can not attempt the fall back mechanisms on EACCESS
1202 * but will return the EACCESS to the caller. Note that the VFS does not call
1203 * unlink on negative dentries currently.
1205 int cifs_unlink(struct inode *dir, struct dentry *dentry)
1209 char *full_path = NULL;
1210 struct inode *inode = dentry->d_inode;
1211 struct cifsInodeInfo *cifs_inode;
1212 struct super_block *sb = dir->i_sb;
1213 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
1214 struct tcon_link *tlink;
1215 struct cifs_tcon *tcon;
1216 struct TCP_Server_Info *server;
1217 struct iattr *attrs = NULL;
1218 __u32 dosattr = 0, origattr = 0;
1220 cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry);
1222 tlink = cifs_sb_tlink(cifs_sb);
1224 return PTR_ERR(tlink);
1225 tcon = tlink_tcon(tlink);
1226 server = tcon->ses->server;
1230 /* Unlink can be called from rename so we can not take the
1231 * sb->s_vfs_rename_mutex here */
1232 full_path = build_path_from_dentry(dentry);
1233 if (full_path == NULL) {
1238 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1239 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1240 rc = CIFSPOSIXDelFile(xid, tcon, full_path,
1241 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
1242 cifs_remap(cifs_sb));
1243 cifs_dbg(FYI, "posix del rc %d\n", rc);
1244 if ((rc == 0) || (rc == -ENOENT))
1245 goto psx_del_no_retry;
1249 if (!server->ops->unlink) {
1251 goto psx_del_no_retry;
1254 rc = server->ops->unlink(xid, tcon, full_path, cifs_sb);
1259 cifs_drop_nlink(inode);
1260 } else if (rc == -ENOENT) {
1262 } else if (rc == -EBUSY) {
1263 if (server->ops->rename_pending_delete) {
1264 rc = server->ops->rename_pending_delete(full_path,
1267 cifs_drop_nlink(inode);
1269 } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
1270 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
1271 if (attrs == NULL) {
1276 /* try to reset dos attributes */
1277 cifs_inode = CIFS_I(inode);
1278 origattr = cifs_inode->cifsAttrs;
1280 origattr |= ATTR_NORMAL;
1281 dosattr = origattr & ~ATTR_READONLY;
1283 dosattr |= ATTR_NORMAL;
1284 dosattr |= ATTR_HIDDEN;
1286 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
1290 goto retry_std_delete;
1293 /* undo the setattr if we errored out and it's needed */
1294 if (rc != 0 && dosattr != 0)
1295 cifs_set_file_info(inode, attrs, xid, full_path, origattr);
1299 cifs_inode = CIFS_I(inode);
1300 cifs_inode->time = 0; /* will force revalidate to get info
1302 inode->i_ctime = current_fs_time(sb);
1304 dir->i_ctime = dir->i_mtime = current_fs_time(sb);
1305 cifs_inode = CIFS_I(dir);
1306 CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
1311 cifs_put_tlink(tlink);
1316 cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
1317 const char *full_path, struct cifs_sb_info *cifs_sb,
1318 struct cifs_tcon *tcon, const unsigned int xid)
1321 struct inode *inode = NULL;
1324 rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
1327 rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb,
1334 * setting nlink not necessary except in cases where we failed to get it
1335 * from the server or was set bogus. Also, since this is a brand new
1336 * inode, no need to grab the i_lock before setting the i_nlink.
1338 if (inode->i_nlink < 2)
1339 set_nlink(inode, 2);
1340 mode &= ~current_umask();
1341 /* must turn on setgid bit if parent dir has it */
1342 if (parent->i_mode & S_ISGID)
1345 if (tcon->unix_ext) {
1346 struct cifs_unix_set_info_args args = {
1348 .ctime = NO_CHANGE_64,
1349 .atime = NO_CHANGE_64,
1350 .mtime = NO_CHANGE_64,
1353 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1354 args.uid = current_fsuid();
1355 if (parent->i_mode & S_ISGID)
1356 args.gid = parent->i_gid;
1358 args.gid = current_fsgid();
1360 args.uid = INVALID_UID; /* no change */
1361 args.gid = INVALID_GID; /* no change */
1363 CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1365 cifs_remap(cifs_sb));
1367 struct TCP_Server_Info *server = tcon->ses->server;
1368 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1369 (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo)
1370 server->ops->mkdir_setinfo(inode, full_path, cifs_sb,
1372 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
1373 inode->i_mode = (mode | S_IFDIR);
1375 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1376 inode->i_uid = current_fsuid();
1377 if (inode->i_mode & S_ISGID)
1378 inode->i_gid = parent->i_gid;
1380 inode->i_gid = current_fsgid();
1383 d_instantiate(dentry, inode);
1388 cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode,
1389 const char *full_path, struct cifs_sb_info *cifs_sb,
1390 struct cifs_tcon *tcon, const unsigned int xid)
1394 FILE_UNIX_BASIC_INFO *info = NULL;
1395 struct inode *newinode = NULL;
1396 struct cifs_fattr fattr;
1398 info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1401 goto posix_mkdir_out;
1404 mode &= ~current_umask();
1405 rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode,
1406 NULL /* netfid */, info, &oplock, full_path,
1407 cifs_sb->local_nls, cifs_remap(cifs_sb));
1408 if (rc == -EOPNOTSUPP)
1409 goto posix_mkdir_out;
1411 cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc);
1413 goto posix_mkdir_out;
1416 if (info->Type == cpu_to_le32(-1))
1417 /* no return info, go query for it */
1418 goto posix_mkdir_get_info;
1420 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1421 * need to set uid/gid.
1424 cifs_unix_basic_to_fattr(&fattr, info, cifs_sb);
1425 cifs_fill_uniqueid(inode->i_sb, &fattr);
1426 newinode = cifs_iget(inode->i_sb, &fattr);
1428 goto posix_mkdir_get_info;
1430 d_instantiate(dentry, newinode);
1432 #ifdef CONFIG_CIFS_DEBUG2
1433 cifs_dbg(FYI, "instantiated dentry %p %pd to inode %p\n",
1434 dentry, dentry, newinode);
1436 if (newinode->i_nlink != 2)
1437 cifs_dbg(FYI, "unexpected number of links %d\n",
1444 posix_mkdir_get_info:
1445 rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon,
1447 goto posix_mkdir_out;
1450 int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
1454 struct cifs_sb_info *cifs_sb;
1455 struct tcon_link *tlink;
1456 struct cifs_tcon *tcon;
1457 struct TCP_Server_Info *server;
1460 cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n",
1463 cifs_sb = CIFS_SB(inode->i_sb);
1464 tlink = cifs_sb_tlink(cifs_sb);
1466 return PTR_ERR(tlink);
1467 tcon = tlink_tcon(tlink);
1471 full_path = build_path_from_dentry(direntry);
1472 if (full_path == NULL) {
1477 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1478 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1479 rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
1481 if (rc != -EOPNOTSUPP)
1485 server = tcon->ses->server;
1487 if (!server->ops->mkdir) {
1492 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1493 rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb);
1495 cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc);
1500 rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon,
1504 * Force revalidate to get parent dir info when needed since cached
1505 * attributes are invalid now.
1507 CIFS_I(inode)->time = 0;
1510 cifs_put_tlink(tlink);
1514 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1518 struct cifs_sb_info *cifs_sb;
1519 struct tcon_link *tlink;
1520 struct cifs_tcon *tcon;
1521 struct TCP_Server_Info *server;
1522 char *full_path = NULL;
1523 struct cifsInodeInfo *cifsInode;
1525 cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode);
1529 full_path = build_path_from_dentry(direntry);
1530 if (full_path == NULL) {
1535 cifs_sb = CIFS_SB(inode->i_sb);
1536 tlink = cifs_sb_tlink(cifs_sb);
1537 if (IS_ERR(tlink)) {
1538 rc = PTR_ERR(tlink);
1541 tcon = tlink_tcon(tlink);
1542 server = tcon->ses->server;
1544 if (!server->ops->rmdir) {
1546 cifs_put_tlink(tlink);
1550 rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);
1551 cifs_put_tlink(tlink);
1554 spin_lock(&direntry->d_inode->i_lock);
1555 i_size_write(direntry->d_inode, 0);
1556 clear_nlink(direntry->d_inode);
1557 spin_unlock(&direntry->d_inode->i_lock);
1560 cifsInode = CIFS_I(direntry->d_inode);
1561 /* force revalidate to go get info when needed */
1562 cifsInode->time = 0;
1564 cifsInode = CIFS_I(inode);
1566 * Force revalidate to get parent dir info when needed since cached
1567 * attributes are invalid now.
1569 cifsInode->time = 0;
1571 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1572 current_fs_time(inode->i_sb);
1581 cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
1582 const char *from_path, struct dentry *to_dentry,
1583 const char *to_path)
1585 struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
1586 struct tcon_link *tlink;
1587 struct cifs_tcon *tcon;
1588 struct TCP_Server_Info *server;
1589 struct cifs_fid fid;
1590 struct cifs_open_parms oparms;
1593 tlink = cifs_sb_tlink(cifs_sb);
1595 return PTR_ERR(tlink);
1596 tcon = tlink_tcon(tlink);
1597 server = tcon->ses->server;
1599 if (!server->ops->rename)
1602 /* try path-based rename first */
1603 rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb);
1606 * Don't bother with rename by filehandle unless file is busy and
1607 * source. Note that cross directory moves do not work with
1608 * rename by filehandle to various Windows servers.
1610 if (rc == 0 || rc != -EBUSY)
1611 goto do_rename_exit;
1613 /* open-file renames don't work across directories */
1614 if (to_dentry->d_parent != from_dentry->d_parent)
1615 goto do_rename_exit;
1618 oparms.cifs_sb = cifs_sb;
1619 /* open the file to be renamed -- we need DELETE perms */
1620 oparms.desired_access = DELETE;
1621 oparms.create_options = CREATE_NOT_DIR;
1622 oparms.disposition = FILE_OPEN;
1623 oparms.path = from_path;
1625 oparms.reconnect = false;
1627 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1629 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
1630 (const char *) to_dentry->d_name.name,
1631 cifs_sb->local_nls, cifs_remap(cifs_sb));
1632 CIFSSMBClose(xid, tcon, fid.netfid);
1635 cifs_put_tlink(tlink);
1640 cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
1641 struct inode *target_dir, struct dentry *target_dentry,
1644 char *from_name = NULL;
1645 char *to_name = NULL;
1646 struct cifs_sb_info *cifs_sb;
1647 struct tcon_link *tlink;
1648 struct cifs_tcon *tcon;
1649 FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
1650 FILE_UNIX_BASIC_INFO *info_buf_target;
1654 if (flags & ~RENAME_NOREPLACE)
1657 cifs_sb = CIFS_SB(source_dir->i_sb);
1658 tlink = cifs_sb_tlink(cifs_sb);
1660 return PTR_ERR(tlink);
1661 tcon = tlink_tcon(tlink);
1666 * we already have the rename sem so we do not need to
1667 * grab it again here to protect the path integrity
1669 from_name = build_path_from_dentry(source_dentry);
1670 if (from_name == NULL) {
1672 goto cifs_rename_exit;
1675 to_name = build_path_from_dentry(target_dentry);
1676 if (to_name == NULL) {
1678 goto cifs_rename_exit;
1681 rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
1685 * No-replace is the natural behavior for CIFS, so skip unlink hacks.
1687 if (flags & RENAME_NOREPLACE)
1688 goto cifs_rename_exit;
1690 if (rc == -EEXIST && tcon->unix_ext) {
1692 * Are src and dst hardlinks of same inode? We can only tell
1693 * with unix extensions enabled.
1696 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
1698 if (info_buf_source == NULL) {
1700 goto cifs_rename_exit;
1703 info_buf_target = info_buf_source + 1;
1704 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name,
1707 cifs_remap(cifs_sb));
1711 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name,
1714 cifs_remap(cifs_sb));
1716 if (tmprc == 0 && (info_buf_source->UniqueId ==
1717 info_buf_target->UniqueId)) {
1718 /* same file, POSIX says that this is a noop */
1720 goto cifs_rename_exit;
1724 * else ... BB we could add the same check for Windows by
1725 * checking the UniqueId via FILE_INTERNAL_INFO
1729 /* Try unlinking the target dentry if it's not negative */
1730 if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) {
1731 if (d_is_dir(target_dentry))
1732 tmprc = cifs_rmdir(target_dir, target_dentry);
1734 tmprc = cifs_unlink(target_dir, target_dentry);
1736 goto cifs_rename_exit;
1737 rc = cifs_do_rename(xid, source_dentry, from_name,
1738 target_dentry, to_name);
1741 /* force revalidate to go get info when needed */
1742 CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;
1744 source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime =
1745 target_dir->i_mtime = current_fs_time(source_dir->i_sb);
1748 kfree(info_buf_source);
1752 cifs_put_tlink(tlink);
1757 cifs_inode_needs_reval(struct inode *inode)
1759 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1760 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1762 if (CIFS_CACHE_READ(cifs_i))
1765 if (!lookupCacheEnabled)
1768 if (cifs_i->time == 0)
1771 if (!cifs_sb->actimeo)
1774 if (!time_in_range(jiffies, cifs_i->time,
1775 cifs_i->time + cifs_sb->actimeo))
1778 /* hardlinked files w/ noserverino get "special" treatment */
1779 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&
1780 S_ISREG(inode->i_mode) && inode->i_nlink != 1)
1787 * Zap the cache. Called when invalid_mapping flag is set.
1790 cifs_invalidate_mapping(struct inode *inode)
1794 if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
1795 rc = invalidate_inode_pages2(inode->i_mapping);
1797 cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
1801 cifs_fscache_reset_inode_cookie(inode);
1806 * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks
1807 * @word: long word containing the bit lock
1810 cifs_wait_bit_killable(struct wait_bit_key *key)
1812 if (fatal_signal_pending(current))
1813 return -ERESTARTSYS;
1814 freezable_schedule_unsafe();
1819 cifs_revalidate_mapping(struct inode *inode)
1822 unsigned long *flags = &CIFS_I(inode)->flags;
1824 rc = wait_on_bit_lock_action(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
1829 if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) {
1830 rc = cifs_invalidate_mapping(inode);
1832 set_bit(CIFS_INO_INVALID_MAPPING, flags);
1835 clear_bit_unlock(CIFS_INO_LOCK, flags);
1836 smp_mb__after_atomic();
1837 wake_up_bit(flags, CIFS_INO_LOCK);
1843 cifs_zap_mapping(struct inode *inode)
1845 set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
1846 return cifs_revalidate_mapping(inode);
1849 int cifs_revalidate_file_attr(struct file *filp)
1852 struct inode *inode = file_inode(filp);
1853 struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
1855 if (!cifs_inode_needs_reval(inode))
1858 if (tlink_tcon(cfile->tlink)->unix_ext)
1859 rc = cifs_get_file_info_unix(filp);
1861 rc = cifs_get_file_info(filp);
1866 int cifs_revalidate_dentry_attr(struct dentry *dentry)
1870 struct inode *inode = dentry->d_inode;
1871 struct super_block *sb = dentry->d_sb;
1872 char *full_path = NULL;
1877 if (!cifs_inode_needs_reval(inode))
1882 /* can not safely grab the rename sem here if rename calls revalidate
1883 since that would deadlock */
1884 full_path = build_path_from_dentry(dentry);
1885 if (full_path == NULL) {
1890 cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n",
1891 full_path, inode, inode->i_count.counter,
1892 dentry, dentry->d_time, jiffies);
1894 if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
1895 rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
1897 rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
1906 int cifs_revalidate_file(struct file *filp)
1909 struct inode *inode = file_inode(filp);
1911 rc = cifs_revalidate_file_attr(filp);
1915 return cifs_revalidate_mapping(inode);
1918 /* revalidate a dentry's inode attributes */
1919 int cifs_revalidate_dentry(struct dentry *dentry)
1922 struct inode *inode = dentry->d_inode;
1924 rc = cifs_revalidate_dentry_attr(dentry);
1928 return cifs_revalidate_mapping(inode);
1931 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1934 struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
1935 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
1936 struct inode *inode = dentry->d_inode;
1940 * We need to be sure that all dirty pages are written and the server
1941 * has actual ctime, mtime and file length.
1943 if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
1944 inode->i_mapping->nrpages != 0) {
1945 rc = filemap_fdatawait(inode->i_mapping);
1947 mapping_set_error(inode->i_mapping, rc);
1952 rc = cifs_revalidate_dentry_attr(dentry);
1956 generic_fillattr(inode, stat);
1957 stat->blksize = CIFS_MAX_MSGSIZE;
1958 stat->ino = CIFS_I(inode)->uniqueid;
1961 * If on a multiuser mount without unix extensions or cifsacl being
1962 * enabled, and the admin hasn't overridden them, set the ownership
1963 * to the fsuid/fsgid of the current process.
1965 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
1966 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1968 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
1969 stat->uid = current_fsuid();
1970 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
1971 stat->gid = current_fsgid();
1976 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1978 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1979 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1983 page = grab_cache_page(mapping, index);
1987 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1989 page_cache_release(page);
1993 static void cifs_setsize(struct inode *inode, loff_t offset)
1995 spin_lock(&inode->i_lock);
1996 i_size_write(inode, offset);
1997 spin_unlock(&inode->i_lock);
1999 truncate_pagecache(inode, offset);
2003 cifs_set_file_size(struct inode *inode, struct iattr *attrs,
2004 unsigned int xid, char *full_path)
2007 struct cifsFileInfo *open_file;
2008 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2009 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2010 struct tcon_link *tlink = NULL;
2011 struct cifs_tcon *tcon = NULL;
2012 struct TCP_Server_Info *server;
2013 struct cifs_io_parms io_parms;
2016 * To avoid spurious oplock breaks from server, in the case of
2017 * inodes that we already have open, avoid doing path based
2018 * setting of file size if we can do it by handle.
2019 * This keeps our caching token (oplock) and avoids timeouts
2020 * when the local oplock break takes longer to flush
2021 * writebehind data than the SMB timeout for the SetPathInfo
2022 * request would allow
2024 open_file = find_writable_file(cifsInode, true);
2026 tcon = tlink_tcon(open_file->tlink);
2027 server = tcon->ses->server;
2028 if (server->ops->set_file_size)
2029 rc = server->ops->set_file_size(xid, tcon, open_file,
2030 attrs->ia_size, false);
2033 cifsFileInfo_put(open_file);
2034 cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
2035 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2036 unsigned int bytes_written;
2038 io_parms.netfid = open_file->fid.netfid;
2039 io_parms.pid = open_file->pid;
2040 io_parms.tcon = tcon;
2041 io_parms.offset = 0;
2042 io_parms.length = attrs->ia_size;
2043 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
2045 cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
2054 tlink = cifs_sb_tlink(cifs_sb);
2056 return PTR_ERR(tlink);
2057 tcon = tlink_tcon(tlink);
2058 server = tcon->ses->server;
2062 * Set file size by pathname rather than by handle either because no
2063 * valid, writeable file handle for it was found or because there was
2064 * an error setting it by handle.
2066 if (server->ops->set_path_size)
2067 rc = server->ops->set_path_size(xid, tcon, full_path,
2068 attrs->ia_size, cifs_sb, false);
2071 cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
2072 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2076 rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
2077 GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
2078 &oplock, NULL, cifs_sb->local_nls,
2079 cifs_remap(cifs_sb));
2081 unsigned int bytes_written;
2083 io_parms.netfid = netfid;
2084 io_parms.pid = current->tgid;
2085 io_parms.tcon = tcon;
2086 io_parms.offset = 0;
2087 io_parms.length = attrs->ia_size;
2088 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
2090 cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
2091 CIFSSMBClose(xid, tcon, netfid);
2095 cifs_put_tlink(tlink);
2099 cifsInode->server_eof = attrs->ia_size;
2100 cifs_setsize(inode, attrs->ia_size);
2101 cifs_truncate_page(inode->i_mapping, inode->i_size);
2108 cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
2112 char *full_path = NULL;
2113 struct inode *inode = direntry->d_inode;
2114 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2115 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2116 struct tcon_link *tlink;
2117 struct cifs_tcon *pTcon;
2118 struct cifs_unix_set_info_args *args = NULL;
2119 struct cifsFileInfo *open_file;
2121 cifs_dbg(FYI, "setattr_unix on file %pd attrs->ia_valid=0x%x\n",
2122 direntry, attrs->ia_valid);
2126 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2127 attrs->ia_valid |= ATTR_FORCE;
2129 rc = inode_change_ok(inode, attrs);
2133 full_path = build_path_from_dentry(direntry);
2134 if (full_path == NULL) {
2140 * Attempt to flush data before changing attributes. We need to do
2141 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2142 * ownership or mode then we may also need to do this. Here, we take
2143 * the safe way out and just do the flush on all setattr requests. If
2144 * the flush returns error, store it to report later and continue.
2146 * BB: This should be smarter. Why bother flushing pages that
2147 * will be truncated anyway? Also, should we error out here if
2148 * the flush returns error?
2150 rc = filemap_write_and_wait(inode->i_mapping);
2151 mapping_set_error(inode->i_mapping, rc);
2154 if (attrs->ia_valid & ATTR_SIZE) {
2155 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2160 /* skip mode change if it's just for clearing setuid/setgid */
2161 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2162 attrs->ia_valid &= ~ATTR_MODE;
2164 args = kmalloc(sizeof(*args), GFP_KERNEL);
2170 /* set up the struct */
2171 if (attrs->ia_valid & ATTR_MODE)
2172 args->mode = attrs->ia_mode;
2174 args->mode = NO_CHANGE_64;
2176 if (attrs->ia_valid & ATTR_UID)
2177 args->uid = attrs->ia_uid;
2179 args->uid = INVALID_UID; /* no change */
2181 if (attrs->ia_valid & ATTR_GID)
2182 args->gid = attrs->ia_gid;
2184 args->gid = INVALID_GID; /* no change */
2186 if (attrs->ia_valid & ATTR_ATIME)
2187 args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
2189 args->atime = NO_CHANGE_64;
2191 if (attrs->ia_valid & ATTR_MTIME)
2192 args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
2194 args->mtime = NO_CHANGE_64;
2196 if (attrs->ia_valid & ATTR_CTIME)
2197 args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
2199 args->ctime = NO_CHANGE_64;
2202 open_file = find_writable_file(cifsInode, true);
2204 u16 nfid = open_file->fid.netfid;
2205 u32 npid = open_file->pid;
2206 pTcon = tlink_tcon(open_file->tlink);
2207 rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
2208 cifsFileInfo_put(open_file);
2210 tlink = cifs_sb_tlink(cifs_sb);
2211 if (IS_ERR(tlink)) {
2212 rc = PTR_ERR(tlink);
2215 pTcon = tlink_tcon(tlink);
2216 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
2218 cifs_sb->mnt_cifs_flags &
2219 CIFS_MOUNT_MAP_SPECIAL_CHR);
2220 cifs_put_tlink(tlink);
2226 if ((attrs->ia_valid & ATTR_SIZE) &&
2227 attrs->ia_size != i_size_read(inode))
2228 truncate_setsize(inode, attrs->ia_size);
2230 setattr_copy(inode, attrs);
2231 mark_inode_dirty(inode);
2233 /* force revalidate when any of these times are set since some
2234 of the fs types (eg ext3, fat) do not have fine enough
2235 time granularity to match protocol, and we do not have a
2236 a way (yet) to query the server fs's time granularity (and
2237 whether it rounds times down).
2239 if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2240 cifsInode->time = 0;
2249 cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
2252 kuid_t uid = INVALID_UID;
2253 kgid_t gid = INVALID_GID;
2254 struct inode *inode = direntry->d_inode;
2255 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2256 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2257 char *full_path = NULL;
2260 __u64 mode = NO_CHANGE_64;
2264 cifs_dbg(FYI, "setattr on file %pd attrs->iavalid 0x%x\n",
2265 direntry, attrs->ia_valid);
2267 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2268 attrs->ia_valid |= ATTR_FORCE;
2270 rc = inode_change_ok(inode, attrs);
2276 full_path = build_path_from_dentry(direntry);
2277 if (full_path == NULL) {
2284 * Attempt to flush data before changing attributes. We need to do
2285 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2286 * ownership or mode then we may also need to do this. Here, we take
2287 * the safe way out and just do the flush on all setattr requests. If
2288 * the flush returns error, store it to report later and continue.
2290 * BB: This should be smarter. Why bother flushing pages that
2291 * will be truncated anyway? Also, should we error out here if
2292 * the flush returns error?
2294 rc = filemap_write_and_wait(inode->i_mapping);
2295 mapping_set_error(inode->i_mapping, rc);
2298 if (attrs->ia_valid & ATTR_SIZE) {
2299 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2301 goto cifs_setattr_exit;
2304 if (attrs->ia_valid & ATTR_UID)
2305 uid = attrs->ia_uid;
2307 if (attrs->ia_valid & ATTR_GID)
2308 gid = attrs->ia_gid;
2310 #ifdef CONFIG_CIFS_ACL
2311 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2312 if (uid_valid(uid) || gid_valid(gid)) {
2313 rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
2316 cifs_dbg(FYI, "%s: Setting id failed with error: %d\n",
2318 goto cifs_setattr_exit;
2322 #endif /* CONFIG_CIFS_ACL */
2323 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
2324 attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
2326 /* skip mode change if it's just for clearing setuid/setgid */
2327 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2328 attrs->ia_valid &= ~ATTR_MODE;
2330 if (attrs->ia_valid & ATTR_MODE) {
2331 mode = attrs->ia_mode;
2333 #ifdef CONFIG_CIFS_ACL
2334 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2335 rc = id_mode_to_cifs_acl(inode, full_path, mode,
2336 INVALID_UID, INVALID_GID);
2338 cifs_dbg(FYI, "%s: Setting ACL failed with error: %d\n",
2340 goto cifs_setattr_exit;
2343 #endif /* CONFIG_CIFS_ACL */
2344 if (((mode & S_IWUGO) == 0) &&
2345 (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
2347 dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
2349 /* fix up mode if we're not using dynperm */
2350 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
2351 attrs->ia_mode = inode->i_mode & ~S_IWUGO;
2352 } else if ((mode & S_IWUGO) &&
2353 (cifsInode->cifsAttrs & ATTR_READONLY)) {
2355 dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
2356 /* Attributes of 0 are ignored */
2358 dosattr |= ATTR_NORMAL;
2360 /* reset local inode permissions to normal */
2361 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2362 attrs->ia_mode &= ~(S_IALLUGO);
2363 if (S_ISDIR(inode->i_mode))
2365 cifs_sb->mnt_dir_mode;
2368 cifs_sb->mnt_file_mode;
2370 } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2371 /* ignore mode change - ATTR_READONLY hasn't changed */
2372 attrs->ia_valid &= ~ATTR_MODE;
2376 if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
2377 ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
2378 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
2379 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2381 /* Even if error on time set, no sense failing the call if
2382 the server would set the time to a reasonable value anyway,
2383 and this check ensures that we are not being called from
2384 sys_utimes in which case we ought to fail the call back to
2385 the user when the server rejects the call */
2386 if ((rc) && (attrs->ia_valid &
2387 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
2391 /* do not need local check to inode_check_ok since the server does
2394 goto cifs_setattr_exit;
2396 if ((attrs->ia_valid & ATTR_SIZE) &&
2397 attrs->ia_size != i_size_read(inode))
2398 truncate_setsize(inode, attrs->ia_size);
2400 setattr_copy(inode, attrs);
2401 mark_inode_dirty(inode);
2410 cifs_setattr(struct dentry *direntry, struct iattr *attrs)
2412 struct inode *inode = direntry->d_inode;
2413 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2414 struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
2416 if (pTcon->unix_ext)
2417 return cifs_setattr_unix(direntry, attrs);
2419 return cifs_setattr_nounix(direntry, attrs);
2421 /* BB: add cifs_setattr_legacy for really old servers */
2425 void cifs_delete_inode(struct inode *inode)
2427 cifs_dbg(FYI, "In cifs_delete_inode, inode = 0x%p\n", inode);
2428 /* may have to add back in if and when safe distributed caching of
2429 directories added e.g. via FindNotify */