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_u.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 #ifdef CONFIG_CIFS_FSCACHE
941 /* initialize per-inode cache cookie pointer */
942 CIFS_I(inode)->fscache = NULL;
944 unlock_new_inode(inode);
951 /* gets root inode */
952 struct inode *cifs_root_iget(struct super_block *sb)
955 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
956 struct inode *inode = NULL;
958 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
961 if (tcon->unix_ext) {
962 rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
963 /* some servers mistakenly claim POSIX support */
964 if (rc != -EOPNOTSUPP)
966 cifs_dbg(VFS, "server does not support POSIX extensions");
967 tcon->unix_ext = false;
970 rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
978 #ifdef CONFIG_CIFS_FSCACHE
979 /* populate tcon->resource_id */
980 tcon->resource_id = CIFS_I(inode)->uniqueid;
983 if (rc && tcon->ipc) {
984 cifs_dbg(FYI, "ipc connection - fake read inode\n");
985 spin_lock(&inode->i_lock);
986 inode->i_mode |= S_IFDIR;
988 inode->i_op = &cifs_ipc_inode_ops;
989 inode->i_fop = &simple_dir_operations;
990 inode->i_uid = cifs_sb->mnt_uid;
991 inode->i_gid = cifs_sb->mnt_gid;
992 spin_unlock(&inode->i_lock);
999 /* can not call macro free_xid here since in a void func
1000 * TODO: This is no longer true
1007 cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
1008 char *full_path, __u32 dosattr)
1010 bool set_time = false;
1011 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1012 struct TCP_Server_Info *server;
1013 FILE_BASIC_INFO info_buf;
1018 server = cifs_sb_master_tcon(cifs_sb)->ses->server;
1019 if (!server->ops->set_file_info)
1022 if (attrs->ia_valid & ATTR_ATIME) {
1024 info_buf.LastAccessTime =
1025 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1027 info_buf.LastAccessTime = 0;
1029 if (attrs->ia_valid & ATTR_MTIME) {
1031 info_buf.LastWriteTime =
1032 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1034 info_buf.LastWriteTime = 0;
1037 * Samba throws this field away, but windows may actually use it.
1038 * Do not set ctime unless other time stamps are changed explicitly
1039 * (i.e. by utimes()) since we would then have a mix of client and
1042 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1043 cifs_dbg(FYI, "CIFS - CTIME changed\n");
1044 info_buf.ChangeTime =
1045 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1047 info_buf.ChangeTime = 0;
1049 info_buf.CreationTime = 0; /* don't change */
1050 info_buf.Attributes = cpu_to_le32(dosattr);
1052 return server->ops->set_file_info(inode, full_path, &info_buf, xid);
1056 * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
1057 * and rename it to a random name that hopefully won't conflict with
1061 cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
1062 const unsigned int xid)
1066 struct cifs_fid fid;
1067 struct cifs_open_parms oparms;
1068 struct inode *inode = dentry->d_inode;
1069 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1070 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1071 struct tcon_link *tlink;
1072 struct cifs_tcon *tcon;
1073 __u32 dosattr, origattr;
1074 FILE_BASIC_INFO *info_buf = NULL;
1076 tlink = cifs_sb_tlink(cifs_sb);
1078 return PTR_ERR(tlink);
1079 tcon = tlink_tcon(tlink);
1082 * We cannot rename the file if the server doesn't support
1083 * CAP_INFOLEVEL_PASSTHRU
1085 if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
1091 oparms.cifs_sb = cifs_sb;
1092 oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
1093 oparms.create_options = CREATE_NOT_DIR;
1094 oparms.disposition = FILE_OPEN;
1095 oparms.path = full_path;
1097 oparms.reconnect = false;
1099 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1103 origattr = cifsInode->cifsAttrs;
1105 origattr |= ATTR_NORMAL;
1107 dosattr = origattr & ~ATTR_READONLY;
1109 dosattr |= ATTR_NORMAL;
1110 dosattr |= ATTR_HIDDEN;
1112 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1113 if (dosattr != origattr) {
1114 info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
1115 if (info_buf == NULL) {
1119 info_buf->Attributes = cpu_to_le32(dosattr);
1120 rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1122 /* although we would like to mark the file hidden
1123 if that fails we will still try to rename it */
1125 cifsInode->cifsAttrs = dosattr;
1127 dosattr = origattr; /* since not able to change them */
1130 /* rename the file */
1131 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
1133 cifs_remap(cifs_sb));
1139 /* try to set DELETE_ON_CLOSE */
1140 if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
1141 rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
1144 * some samba versions return -ENOENT when we try to set the
1145 * file disposition here. Likely a samba bug, but work around
1146 * it for now. This means that some cifsXXX files may hang
1147 * around after they shouldn't.
1149 * BB: remove this hack after more servers have the fix
1157 set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
1161 CIFSSMBClose(xid, tcon, fid.netfid);
1164 cifs_put_tlink(tlink);
1168 * reset everything back to the original state. Don't bother
1169 * dealing with errors here since we can't do anything about
1173 CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
1174 cifs_sb->local_nls, cifs_remap(cifs_sb));
1176 if (dosattr != origattr) {
1177 info_buf->Attributes = cpu_to_le32(origattr);
1178 if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1180 cifsInode->cifsAttrs = origattr;
1186 /* copied from fs/nfs/dir.c with small changes */
1188 cifs_drop_nlink(struct inode *inode)
1190 spin_lock(&inode->i_lock);
1191 if (inode->i_nlink > 0)
1193 spin_unlock(&inode->i_lock);
1197 * If dentry->d_inode is null (usually meaning the cached dentry
1198 * is a negative dentry) then we would attempt a standard SMB delete, but
1199 * if that fails we can not attempt the fall back mechanisms on EACCESS
1200 * but will return the EACCESS to the caller. Note that the VFS does not call
1201 * unlink on negative dentries currently.
1203 int cifs_unlink(struct inode *dir, struct dentry *dentry)
1207 char *full_path = NULL;
1208 struct inode *inode = dentry->d_inode;
1209 struct cifsInodeInfo *cifs_inode;
1210 struct super_block *sb = dir->i_sb;
1211 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
1212 struct tcon_link *tlink;
1213 struct cifs_tcon *tcon;
1214 struct TCP_Server_Info *server;
1215 struct iattr *attrs = NULL;
1216 __u32 dosattr = 0, origattr = 0;
1218 cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry);
1220 tlink = cifs_sb_tlink(cifs_sb);
1222 return PTR_ERR(tlink);
1223 tcon = tlink_tcon(tlink);
1224 server = tcon->ses->server;
1228 /* Unlink can be called from rename so we can not take the
1229 * sb->s_vfs_rename_mutex here */
1230 full_path = build_path_from_dentry(dentry);
1231 if (full_path == NULL) {
1236 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1237 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1238 rc = CIFSPOSIXDelFile(xid, tcon, full_path,
1239 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
1240 cifs_remap(cifs_sb));
1241 cifs_dbg(FYI, "posix del rc %d\n", rc);
1242 if ((rc == 0) || (rc == -ENOENT))
1243 goto psx_del_no_retry;
1247 if (!server->ops->unlink) {
1249 goto psx_del_no_retry;
1252 rc = server->ops->unlink(xid, tcon, full_path, cifs_sb);
1257 cifs_drop_nlink(inode);
1258 } else if (rc == -ENOENT) {
1260 } else if (rc == -EBUSY) {
1261 if (server->ops->rename_pending_delete) {
1262 rc = server->ops->rename_pending_delete(full_path,
1265 cifs_drop_nlink(inode);
1267 } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
1268 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
1269 if (attrs == NULL) {
1274 /* try to reset dos attributes */
1275 cifs_inode = CIFS_I(inode);
1276 origattr = cifs_inode->cifsAttrs;
1278 origattr |= ATTR_NORMAL;
1279 dosattr = origattr & ~ATTR_READONLY;
1281 dosattr |= ATTR_NORMAL;
1282 dosattr |= ATTR_HIDDEN;
1284 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
1288 goto retry_std_delete;
1291 /* undo the setattr if we errored out and it's needed */
1292 if (rc != 0 && dosattr != 0)
1293 cifs_set_file_info(inode, attrs, xid, full_path, origattr);
1297 cifs_inode = CIFS_I(inode);
1298 cifs_inode->time = 0; /* will force revalidate to get info
1300 inode->i_ctime = current_fs_time(sb);
1302 dir->i_ctime = dir->i_mtime = current_fs_time(sb);
1303 cifs_inode = CIFS_I(dir);
1304 CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
1309 cifs_put_tlink(tlink);
1314 cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
1315 const char *full_path, struct cifs_sb_info *cifs_sb,
1316 struct cifs_tcon *tcon, const unsigned int xid)
1319 struct inode *inode = NULL;
1322 rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
1325 rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb,
1332 * setting nlink not necessary except in cases where we failed to get it
1333 * from the server or was set bogus. Also, since this is a brand new
1334 * inode, no need to grab the i_lock before setting the i_nlink.
1336 if (inode->i_nlink < 2)
1337 set_nlink(inode, 2);
1338 mode &= ~current_umask();
1339 /* must turn on setgid bit if parent dir has it */
1340 if (parent->i_mode & S_ISGID)
1343 if (tcon->unix_ext) {
1344 struct cifs_unix_set_info_args args = {
1346 .ctime = NO_CHANGE_64,
1347 .atime = NO_CHANGE_64,
1348 .mtime = NO_CHANGE_64,
1351 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1352 args.uid = current_fsuid();
1353 if (parent->i_mode & S_ISGID)
1354 args.gid = parent->i_gid;
1356 args.gid = current_fsgid();
1358 args.uid = INVALID_UID; /* no change */
1359 args.gid = INVALID_GID; /* no change */
1361 CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1363 cifs_remap(cifs_sb));
1365 struct TCP_Server_Info *server = tcon->ses->server;
1366 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1367 (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo)
1368 server->ops->mkdir_setinfo(inode, full_path, cifs_sb,
1370 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
1371 inode->i_mode = (mode | S_IFDIR);
1373 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1374 inode->i_uid = current_fsuid();
1375 if (inode->i_mode & S_ISGID)
1376 inode->i_gid = parent->i_gid;
1378 inode->i_gid = current_fsgid();
1381 d_instantiate(dentry, inode);
1386 cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode,
1387 const char *full_path, struct cifs_sb_info *cifs_sb,
1388 struct cifs_tcon *tcon, const unsigned int xid)
1392 FILE_UNIX_BASIC_INFO *info = NULL;
1393 struct inode *newinode = NULL;
1394 struct cifs_fattr fattr;
1396 info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1399 goto posix_mkdir_out;
1402 mode &= ~current_umask();
1403 rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode,
1404 NULL /* netfid */, info, &oplock, full_path,
1405 cifs_sb->local_nls, cifs_remap(cifs_sb));
1406 if (rc == -EOPNOTSUPP)
1407 goto posix_mkdir_out;
1409 cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc);
1411 goto posix_mkdir_out;
1414 if (info->Type == cpu_to_le32(-1))
1415 /* no return info, go query for it */
1416 goto posix_mkdir_get_info;
1418 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1419 * need to set uid/gid.
1422 cifs_unix_basic_to_fattr(&fattr, info, cifs_sb);
1423 cifs_fill_uniqueid(inode->i_sb, &fattr);
1424 newinode = cifs_iget(inode->i_sb, &fattr);
1426 goto posix_mkdir_get_info;
1428 d_instantiate(dentry, newinode);
1430 #ifdef CONFIG_CIFS_DEBUG2
1431 cifs_dbg(FYI, "instantiated dentry %p %pd to inode %p\n",
1432 dentry, dentry, newinode);
1434 if (newinode->i_nlink != 2)
1435 cifs_dbg(FYI, "unexpected number of links %d\n",
1442 posix_mkdir_get_info:
1443 rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon,
1445 goto posix_mkdir_out;
1448 int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
1452 struct cifs_sb_info *cifs_sb;
1453 struct tcon_link *tlink;
1454 struct cifs_tcon *tcon;
1455 struct TCP_Server_Info *server;
1458 cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n",
1461 cifs_sb = CIFS_SB(inode->i_sb);
1462 tlink = cifs_sb_tlink(cifs_sb);
1464 return PTR_ERR(tlink);
1465 tcon = tlink_tcon(tlink);
1469 full_path = build_path_from_dentry(direntry);
1470 if (full_path == NULL) {
1475 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1476 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1477 rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
1479 if (rc != -EOPNOTSUPP)
1483 server = tcon->ses->server;
1485 if (!server->ops->mkdir) {
1490 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1491 rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb);
1493 cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc);
1498 rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon,
1502 * Force revalidate to get parent dir info when needed since cached
1503 * attributes are invalid now.
1505 CIFS_I(inode)->time = 0;
1508 cifs_put_tlink(tlink);
1512 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1516 struct cifs_sb_info *cifs_sb;
1517 struct tcon_link *tlink;
1518 struct cifs_tcon *tcon;
1519 struct TCP_Server_Info *server;
1520 char *full_path = NULL;
1521 struct cifsInodeInfo *cifsInode;
1523 cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode);
1527 full_path = build_path_from_dentry(direntry);
1528 if (full_path == NULL) {
1533 cifs_sb = CIFS_SB(inode->i_sb);
1534 tlink = cifs_sb_tlink(cifs_sb);
1535 if (IS_ERR(tlink)) {
1536 rc = PTR_ERR(tlink);
1539 tcon = tlink_tcon(tlink);
1540 server = tcon->ses->server;
1542 if (!server->ops->rmdir) {
1544 cifs_put_tlink(tlink);
1548 rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);
1549 cifs_put_tlink(tlink);
1552 spin_lock(&direntry->d_inode->i_lock);
1553 i_size_write(direntry->d_inode, 0);
1554 clear_nlink(direntry->d_inode);
1555 spin_unlock(&direntry->d_inode->i_lock);
1558 cifsInode = CIFS_I(direntry->d_inode);
1559 /* force revalidate to go get info when needed */
1560 cifsInode->time = 0;
1562 cifsInode = CIFS_I(inode);
1564 * Force revalidate to get parent dir info when needed since cached
1565 * attributes are invalid now.
1567 cifsInode->time = 0;
1569 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1570 current_fs_time(inode->i_sb);
1579 cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
1580 const char *from_path, struct dentry *to_dentry,
1581 const char *to_path)
1583 struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
1584 struct tcon_link *tlink;
1585 struct cifs_tcon *tcon;
1586 struct TCP_Server_Info *server;
1587 struct cifs_fid fid;
1588 struct cifs_open_parms oparms;
1591 tlink = cifs_sb_tlink(cifs_sb);
1593 return PTR_ERR(tlink);
1594 tcon = tlink_tcon(tlink);
1595 server = tcon->ses->server;
1597 if (!server->ops->rename)
1600 /* try path-based rename first */
1601 rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb);
1604 * Don't bother with rename by filehandle unless file is busy and
1605 * source. Note that cross directory moves do not work with
1606 * rename by filehandle to various Windows servers.
1608 if (rc == 0 || rc != -EBUSY)
1609 goto do_rename_exit;
1611 /* open-file renames don't work across directories */
1612 if (to_dentry->d_parent != from_dentry->d_parent)
1613 goto do_rename_exit;
1616 oparms.cifs_sb = cifs_sb;
1617 /* open the file to be renamed -- we need DELETE perms */
1618 oparms.desired_access = DELETE;
1619 oparms.create_options = CREATE_NOT_DIR;
1620 oparms.disposition = FILE_OPEN;
1621 oparms.path = from_path;
1623 oparms.reconnect = false;
1625 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1627 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
1628 (const char *) to_dentry->d_name.name,
1629 cifs_sb->local_nls, cifs_remap(cifs_sb));
1630 CIFSSMBClose(xid, tcon, fid.netfid);
1633 cifs_put_tlink(tlink);
1638 cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
1639 struct inode *target_dir, struct dentry *target_dentry,
1642 char *from_name = NULL;
1643 char *to_name = NULL;
1644 struct cifs_sb_info *cifs_sb;
1645 struct tcon_link *tlink;
1646 struct cifs_tcon *tcon;
1647 FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
1648 FILE_UNIX_BASIC_INFO *info_buf_target;
1652 if (flags & ~RENAME_NOREPLACE)
1655 cifs_sb = CIFS_SB(source_dir->i_sb);
1656 tlink = cifs_sb_tlink(cifs_sb);
1658 return PTR_ERR(tlink);
1659 tcon = tlink_tcon(tlink);
1664 * we already have the rename sem so we do not need to
1665 * grab it again here to protect the path integrity
1667 from_name = build_path_from_dentry(source_dentry);
1668 if (from_name == NULL) {
1670 goto cifs_rename_exit;
1673 to_name = build_path_from_dentry(target_dentry);
1674 if (to_name == NULL) {
1676 goto cifs_rename_exit;
1679 rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
1683 * No-replace is the natural behavior for CIFS, so skip unlink hacks.
1685 if (flags & RENAME_NOREPLACE)
1686 goto cifs_rename_exit;
1688 if (rc == -EEXIST && tcon->unix_ext) {
1690 * Are src and dst hardlinks of same inode? We can only tell
1691 * with unix extensions enabled.
1694 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
1696 if (info_buf_source == NULL) {
1698 goto cifs_rename_exit;
1701 info_buf_target = info_buf_source + 1;
1702 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name,
1705 cifs_remap(cifs_sb));
1709 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name,
1712 cifs_remap(cifs_sb));
1714 if (tmprc == 0 && (info_buf_source->UniqueId ==
1715 info_buf_target->UniqueId)) {
1716 /* same file, POSIX says that this is a noop */
1718 goto cifs_rename_exit;
1722 * else ... BB we could add the same check for Windows by
1723 * checking the UniqueId via FILE_INTERNAL_INFO
1727 /* Try unlinking the target dentry if it's not negative */
1728 if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) {
1729 if (d_is_dir(target_dentry))
1730 tmprc = cifs_rmdir(target_dir, target_dentry);
1732 tmprc = cifs_unlink(target_dir, target_dentry);
1734 goto cifs_rename_exit;
1735 rc = cifs_do_rename(xid, source_dentry, from_name,
1736 target_dentry, to_name);
1739 /* force revalidate to go get info when needed */
1740 CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;
1742 source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime =
1743 target_dir->i_mtime = current_fs_time(source_dir->i_sb);
1746 kfree(info_buf_source);
1750 cifs_put_tlink(tlink);
1755 cifs_inode_needs_reval(struct inode *inode)
1757 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1758 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1760 if (CIFS_CACHE_READ(cifs_i))
1763 if (!lookupCacheEnabled)
1766 if (cifs_i->time == 0)
1769 if (!cifs_sb->actimeo)
1772 if (!time_in_range(jiffies, cifs_i->time,
1773 cifs_i->time + cifs_sb->actimeo))
1776 /* hardlinked files w/ noserverino get "special" treatment */
1777 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&
1778 S_ISREG(inode->i_mode) && inode->i_nlink != 1)
1785 * Zap the cache. Called when invalid_mapping flag is set.
1788 cifs_invalidate_mapping(struct inode *inode)
1792 if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
1793 rc = invalidate_inode_pages2(inode->i_mapping);
1795 cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
1799 cifs_fscache_reset_inode_cookie(inode);
1804 * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks
1805 * @word: long word containing the bit lock
1808 cifs_wait_bit_killable(struct wait_bit_key *key)
1810 if (fatal_signal_pending(current))
1811 return -ERESTARTSYS;
1812 freezable_schedule_unsafe();
1817 cifs_revalidate_mapping(struct inode *inode)
1820 unsigned long *flags = &CIFS_I(inode)->flags;
1822 rc = wait_on_bit_lock_action(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
1827 if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) {
1828 rc = cifs_invalidate_mapping(inode);
1830 set_bit(CIFS_INO_INVALID_MAPPING, flags);
1833 clear_bit_unlock(CIFS_INO_LOCK, flags);
1834 smp_mb__after_atomic();
1835 wake_up_bit(flags, CIFS_INO_LOCK);
1841 cifs_zap_mapping(struct inode *inode)
1843 set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
1844 return cifs_revalidate_mapping(inode);
1847 int cifs_revalidate_file_attr(struct file *filp)
1850 struct inode *inode = file_inode(filp);
1851 struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
1853 if (!cifs_inode_needs_reval(inode))
1856 if (tlink_tcon(cfile->tlink)->unix_ext)
1857 rc = cifs_get_file_info_unix(filp);
1859 rc = cifs_get_file_info(filp);
1864 int cifs_revalidate_dentry_attr(struct dentry *dentry)
1868 struct inode *inode = dentry->d_inode;
1869 struct super_block *sb = dentry->d_sb;
1870 char *full_path = NULL;
1875 if (!cifs_inode_needs_reval(inode))
1880 /* can not safely grab the rename sem here if rename calls revalidate
1881 since that would deadlock */
1882 full_path = build_path_from_dentry(dentry);
1883 if (full_path == NULL) {
1888 cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n",
1889 full_path, inode, inode->i_count.counter,
1890 dentry, dentry->d_time, jiffies);
1892 if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
1893 rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
1895 rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
1904 int cifs_revalidate_file(struct file *filp)
1907 struct inode *inode = file_inode(filp);
1909 rc = cifs_revalidate_file_attr(filp);
1913 return cifs_revalidate_mapping(inode);
1916 /* revalidate a dentry's inode attributes */
1917 int cifs_revalidate_dentry(struct dentry *dentry)
1920 struct inode *inode = dentry->d_inode;
1922 rc = cifs_revalidate_dentry_attr(dentry);
1926 return cifs_revalidate_mapping(inode);
1929 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1932 struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
1933 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
1934 struct inode *inode = dentry->d_inode;
1938 * We need to be sure that all dirty pages are written and the server
1939 * has actual ctime, mtime and file length.
1941 if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
1942 inode->i_mapping->nrpages != 0) {
1943 rc = filemap_fdatawait(inode->i_mapping);
1945 mapping_set_error(inode->i_mapping, rc);
1950 rc = cifs_revalidate_dentry_attr(dentry);
1954 generic_fillattr(inode, stat);
1955 stat->blksize = CIFS_MAX_MSGSIZE;
1956 stat->ino = CIFS_I(inode)->uniqueid;
1959 * If on a multiuser mount without unix extensions or cifsacl being
1960 * enabled, and the admin hasn't overridden them, set the ownership
1961 * to the fsuid/fsgid of the current process.
1963 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
1964 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1966 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
1967 stat->uid = current_fsuid();
1968 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
1969 stat->gid = current_fsgid();
1974 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1976 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1977 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1981 page = grab_cache_page(mapping, index);
1985 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1987 page_cache_release(page);
1991 static void cifs_setsize(struct inode *inode, loff_t offset)
1993 spin_lock(&inode->i_lock);
1994 i_size_write(inode, offset);
1995 spin_unlock(&inode->i_lock);
1997 truncate_pagecache(inode, offset);
2001 cifs_set_file_size(struct inode *inode, struct iattr *attrs,
2002 unsigned int xid, char *full_path)
2005 struct cifsFileInfo *open_file;
2006 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2007 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2008 struct tcon_link *tlink = NULL;
2009 struct cifs_tcon *tcon = NULL;
2010 struct TCP_Server_Info *server;
2011 struct cifs_io_parms io_parms;
2014 * To avoid spurious oplock breaks from server, in the case of
2015 * inodes that we already have open, avoid doing path based
2016 * setting of file size if we can do it by handle.
2017 * This keeps our caching token (oplock) and avoids timeouts
2018 * when the local oplock break takes longer to flush
2019 * writebehind data than the SMB timeout for the SetPathInfo
2020 * request would allow
2022 open_file = find_writable_file(cifsInode, true);
2024 tcon = tlink_tcon(open_file->tlink);
2025 server = tcon->ses->server;
2026 if (server->ops->set_file_size)
2027 rc = server->ops->set_file_size(xid, tcon, open_file,
2028 attrs->ia_size, false);
2031 cifsFileInfo_put(open_file);
2032 cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
2033 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2034 unsigned int bytes_written;
2036 io_parms.netfid = open_file->fid.netfid;
2037 io_parms.pid = open_file->pid;
2038 io_parms.tcon = tcon;
2039 io_parms.offset = 0;
2040 io_parms.length = attrs->ia_size;
2041 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
2043 cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
2052 tlink = cifs_sb_tlink(cifs_sb);
2054 return PTR_ERR(tlink);
2055 tcon = tlink_tcon(tlink);
2056 server = tcon->ses->server;
2060 * Set file size by pathname rather than by handle either because no
2061 * valid, writeable file handle for it was found or because there was
2062 * an error setting it by handle.
2064 if (server->ops->set_path_size)
2065 rc = server->ops->set_path_size(xid, tcon, full_path,
2066 attrs->ia_size, cifs_sb, false);
2069 cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
2070 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2074 rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
2075 GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
2076 &oplock, NULL, cifs_sb->local_nls,
2077 cifs_remap(cifs_sb));
2079 unsigned int bytes_written;
2081 io_parms.netfid = netfid;
2082 io_parms.pid = current->tgid;
2083 io_parms.tcon = tcon;
2084 io_parms.offset = 0;
2085 io_parms.length = attrs->ia_size;
2086 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
2088 cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
2089 CIFSSMBClose(xid, tcon, netfid);
2093 cifs_put_tlink(tlink);
2097 cifsInode->server_eof = attrs->ia_size;
2098 cifs_setsize(inode, attrs->ia_size);
2099 cifs_truncate_page(inode->i_mapping, inode->i_size);
2106 cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
2110 char *full_path = NULL;
2111 struct inode *inode = direntry->d_inode;
2112 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2113 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2114 struct tcon_link *tlink;
2115 struct cifs_tcon *pTcon;
2116 struct cifs_unix_set_info_args *args = NULL;
2117 struct cifsFileInfo *open_file;
2119 cifs_dbg(FYI, "setattr_unix on file %pd attrs->ia_valid=0x%x\n",
2120 direntry, attrs->ia_valid);
2124 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2125 attrs->ia_valid |= ATTR_FORCE;
2127 rc = inode_change_ok(inode, attrs);
2131 full_path = build_path_from_dentry(direntry);
2132 if (full_path == NULL) {
2138 * Attempt to flush data before changing attributes. We need to do
2139 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2140 * ownership or mode then we may also need to do this. Here, we take
2141 * the safe way out and just do the flush on all setattr requests. If
2142 * the flush returns error, store it to report later and continue.
2144 * BB: This should be smarter. Why bother flushing pages that
2145 * will be truncated anyway? Also, should we error out here if
2146 * the flush returns error?
2148 rc = filemap_write_and_wait(inode->i_mapping);
2149 mapping_set_error(inode->i_mapping, rc);
2152 if (attrs->ia_valid & ATTR_SIZE) {
2153 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2158 /* skip mode change if it's just for clearing setuid/setgid */
2159 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2160 attrs->ia_valid &= ~ATTR_MODE;
2162 args = kmalloc(sizeof(*args), GFP_KERNEL);
2168 /* set up the struct */
2169 if (attrs->ia_valid & ATTR_MODE)
2170 args->mode = attrs->ia_mode;
2172 args->mode = NO_CHANGE_64;
2174 if (attrs->ia_valid & ATTR_UID)
2175 args->uid = attrs->ia_uid;
2177 args->uid = INVALID_UID; /* no change */
2179 if (attrs->ia_valid & ATTR_GID)
2180 args->gid = attrs->ia_gid;
2182 args->gid = INVALID_GID; /* no change */
2184 if (attrs->ia_valid & ATTR_ATIME)
2185 args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
2187 args->atime = NO_CHANGE_64;
2189 if (attrs->ia_valid & ATTR_MTIME)
2190 args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
2192 args->mtime = NO_CHANGE_64;
2194 if (attrs->ia_valid & ATTR_CTIME)
2195 args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
2197 args->ctime = NO_CHANGE_64;
2200 open_file = find_writable_file(cifsInode, true);
2202 u16 nfid = open_file->fid.netfid;
2203 u32 npid = open_file->pid;
2204 pTcon = tlink_tcon(open_file->tlink);
2205 rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
2206 cifsFileInfo_put(open_file);
2208 tlink = cifs_sb_tlink(cifs_sb);
2209 if (IS_ERR(tlink)) {
2210 rc = PTR_ERR(tlink);
2213 pTcon = tlink_tcon(tlink);
2214 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
2216 cifs_sb->mnt_cifs_flags &
2217 CIFS_MOUNT_MAP_SPECIAL_CHR);
2218 cifs_put_tlink(tlink);
2224 if ((attrs->ia_valid & ATTR_SIZE) &&
2225 attrs->ia_size != i_size_read(inode))
2226 truncate_setsize(inode, attrs->ia_size);
2228 setattr_copy(inode, attrs);
2229 mark_inode_dirty(inode);
2231 /* force revalidate when any of these times are set since some
2232 of the fs types (eg ext3, fat) do not have fine enough
2233 time granularity to match protocol, and we do not have a
2234 a way (yet) to query the server fs's time granularity (and
2235 whether it rounds times down).
2237 if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2238 cifsInode->time = 0;
2247 cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
2250 kuid_t uid = INVALID_UID;
2251 kgid_t gid = INVALID_GID;
2252 struct inode *inode = direntry->d_inode;
2253 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2254 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2255 char *full_path = NULL;
2258 __u64 mode = NO_CHANGE_64;
2262 cifs_dbg(FYI, "setattr on file %pd attrs->iavalid 0x%x\n",
2263 direntry, attrs->ia_valid);
2265 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2266 attrs->ia_valid |= ATTR_FORCE;
2268 rc = inode_change_ok(inode, attrs);
2274 full_path = build_path_from_dentry(direntry);
2275 if (full_path == NULL) {
2282 * Attempt to flush data before changing attributes. We need to do
2283 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2284 * ownership or mode then we may also need to do this. Here, we take
2285 * the safe way out and just do the flush on all setattr requests. If
2286 * the flush returns error, store it to report later and continue.
2288 * BB: This should be smarter. Why bother flushing pages that
2289 * will be truncated anyway? Also, should we error out here if
2290 * the flush returns error?
2292 rc = filemap_write_and_wait(inode->i_mapping);
2293 mapping_set_error(inode->i_mapping, rc);
2296 if (attrs->ia_valid & ATTR_SIZE) {
2297 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2299 goto cifs_setattr_exit;
2302 if (attrs->ia_valid & ATTR_UID)
2303 uid = attrs->ia_uid;
2305 if (attrs->ia_valid & ATTR_GID)
2306 gid = attrs->ia_gid;
2308 #ifdef CONFIG_CIFS_ACL
2309 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2310 if (uid_valid(uid) || gid_valid(gid)) {
2311 rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
2314 cifs_dbg(FYI, "%s: Setting id failed with error: %d\n",
2316 goto cifs_setattr_exit;
2320 #endif /* CONFIG_CIFS_ACL */
2321 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
2322 attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
2324 /* skip mode change if it's just for clearing setuid/setgid */
2325 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2326 attrs->ia_valid &= ~ATTR_MODE;
2328 if (attrs->ia_valid & ATTR_MODE) {
2329 mode = attrs->ia_mode;
2331 #ifdef CONFIG_CIFS_ACL
2332 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2333 rc = id_mode_to_cifs_acl(inode, full_path, mode,
2334 INVALID_UID, INVALID_GID);
2336 cifs_dbg(FYI, "%s: Setting ACL failed with error: %d\n",
2338 goto cifs_setattr_exit;
2341 #endif /* CONFIG_CIFS_ACL */
2342 if (((mode & S_IWUGO) == 0) &&
2343 (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
2345 dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
2347 /* fix up mode if we're not using dynperm */
2348 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
2349 attrs->ia_mode = inode->i_mode & ~S_IWUGO;
2350 } else if ((mode & S_IWUGO) &&
2351 (cifsInode->cifsAttrs & ATTR_READONLY)) {
2353 dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
2354 /* Attributes of 0 are ignored */
2356 dosattr |= ATTR_NORMAL;
2358 /* reset local inode permissions to normal */
2359 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2360 attrs->ia_mode &= ~(S_IALLUGO);
2361 if (S_ISDIR(inode->i_mode))
2363 cifs_sb->mnt_dir_mode;
2366 cifs_sb->mnt_file_mode;
2368 } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2369 /* ignore mode change - ATTR_READONLY hasn't changed */
2370 attrs->ia_valid &= ~ATTR_MODE;
2374 if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
2375 ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
2376 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
2377 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2379 /* Even if error on time set, no sense failing the call if
2380 the server would set the time to a reasonable value anyway,
2381 and this check ensures that we are not being called from
2382 sys_utimes in which case we ought to fail the call back to
2383 the user when the server rejects the call */
2384 if ((rc) && (attrs->ia_valid &
2385 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
2389 /* do not need local check to inode_check_ok since the server does
2392 goto cifs_setattr_exit;
2394 if ((attrs->ia_valid & ATTR_SIZE) &&
2395 attrs->ia_size != i_size_read(inode))
2396 truncate_setsize(inode, attrs->ia_size);
2398 setattr_copy(inode, attrs);
2399 mark_inode_dirty(inode);
2408 cifs_setattr(struct dentry *direntry, struct iattr *attrs)
2410 struct inode *inode = direntry->d_inode;
2411 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2412 struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
2414 if (pTcon->unix_ext)
2415 return cifs_setattr_unix(direntry, attrs);
2417 return cifs_setattr_nounix(direntry, attrs);
2419 /* BB: add cifs_setattr_legacy for really old servers */
2423 void cifs_delete_inode(struct inode *inode)
2425 cifs_dbg(FYI, "In cifs_delete_inode, inode = 0x%p\n", inode);
2426 /* may have to add back in if and when safe distributed caching of
2427 directories added e.g. via FindNotify */