4 * Copyright (C) International Business Machines Corp., 2002,2010
5 * Author(s): Steve French (sfrench@us.ibm.com)
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);
964 rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
966 rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
973 #ifdef CONFIG_CIFS_FSCACHE
974 /* populate tcon->resource_id */
975 tcon->resource_id = CIFS_I(inode)->uniqueid;
978 if (rc && tcon->ipc) {
979 cifs_dbg(FYI, "ipc connection - fake read inode\n");
980 spin_lock(&inode->i_lock);
981 inode->i_mode |= S_IFDIR;
983 inode->i_op = &cifs_ipc_inode_ops;
984 inode->i_fop = &simple_dir_operations;
985 inode->i_uid = cifs_sb->mnt_uid;
986 inode->i_gid = cifs_sb->mnt_gid;
987 spin_unlock(&inode->i_lock);
994 /* can not call macro free_xid here since in a void func
995 * TODO: This is no longer true
1002 cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
1003 char *full_path, __u32 dosattr)
1005 bool set_time = false;
1006 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1007 struct TCP_Server_Info *server;
1008 FILE_BASIC_INFO info_buf;
1013 server = cifs_sb_master_tcon(cifs_sb)->ses->server;
1014 if (!server->ops->set_file_info)
1017 if (attrs->ia_valid & ATTR_ATIME) {
1019 info_buf.LastAccessTime =
1020 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1022 info_buf.LastAccessTime = 0;
1024 if (attrs->ia_valid & ATTR_MTIME) {
1026 info_buf.LastWriteTime =
1027 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1029 info_buf.LastWriteTime = 0;
1032 * Samba throws this field away, but windows may actually use it.
1033 * Do not set ctime unless other time stamps are changed explicitly
1034 * (i.e. by utimes()) since we would then have a mix of client and
1037 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1038 cifs_dbg(FYI, "CIFS - CTIME changed\n");
1039 info_buf.ChangeTime =
1040 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1042 info_buf.ChangeTime = 0;
1044 info_buf.CreationTime = 0; /* don't change */
1045 info_buf.Attributes = cpu_to_le32(dosattr);
1047 return server->ops->set_file_info(inode, full_path, &info_buf, xid);
1051 * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
1052 * and rename it to a random name that hopefully won't conflict with
1056 cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
1057 const unsigned int xid)
1061 struct cifs_fid fid;
1062 struct cifs_open_parms oparms;
1063 struct inode *inode = dentry->d_inode;
1064 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1065 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1066 struct tcon_link *tlink;
1067 struct cifs_tcon *tcon;
1068 __u32 dosattr, origattr;
1069 FILE_BASIC_INFO *info_buf = NULL;
1071 tlink = cifs_sb_tlink(cifs_sb);
1073 return PTR_ERR(tlink);
1074 tcon = tlink_tcon(tlink);
1077 * We cannot rename the file if the server doesn't support
1078 * CAP_INFOLEVEL_PASSTHRU
1080 if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
1086 oparms.cifs_sb = cifs_sb;
1087 oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
1088 oparms.create_options = CREATE_NOT_DIR;
1089 oparms.disposition = FILE_OPEN;
1090 oparms.path = full_path;
1092 oparms.reconnect = false;
1094 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1098 origattr = cifsInode->cifsAttrs;
1100 origattr |= ATTR_NORMAL;
1102 dosattr = origattr & ~ATTR_READONLY;
1104 dosattr |= ATTR_NORMAL;
1105 dosattr |= ATTR_HIDDEN;
1107 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1108 if (dosattr != origattr) {
1109 info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
1110 if (info_buf == NULL) {
1114 info_buf->Attributes = cpu_to_le32(dosattr);
1115 rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1117 /* although we would like to mark the file hidden
1118 if that fails we will still try to rename it */
1120 cifsInode->cifsAttrs = dosattr;
1122 dosattr = origattr; /* since not able to change them */
1125 /* rename the file */
1126 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
1128 cifs_remap(cifs_sb));
1134 /* try to set DELETE_ON_CLOSE */
1135 if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
1136 rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
1139 * some samba versions return -ENOENT when we try to set the
1140 * file disposition here. Likely a samba bug, but work around
1141 * it for now. This means that some cifsXXX files may hang
1142 * around after they shouldn't.
1144 * BB: remove this hack after more servers have the fix
1152 set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
1156 CIFSSMBClose(xid, tcon, fid.netfid);
1159 cifs_put_tlink(tlink);
1163 * reset everything back to the original state. Don't bother
1164 * dealing with errors here since we can't do anything about
1168 CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
1169 cifs_sb->local_nls, cifs_remap(cifs_sb));
1171 if (dosattr != origattr) {
1172 info_buf->Attributes = cpu_to_le32(origattr);
1173 if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1175 cifsInode->cifsAttrs = origattr;
1181 /* copied from fs/nfs/dir.c with small changes */
1183 cifs_drop_nlink(struct inode *inode)
1185 spin_lock(&inode->i_lock);
1186 if (inode->i_nlink > 0)
1188 spin_unlock(&inode->i_lock);
1192 * If dentry->d_inode is null (usually meaning the cached dentry
1193 * is a negative dentry) then we would attempt a standard SMB delete, but
1194 * if that fails we can not attempt the fall back mechanisms on EACCESS
1195 * but will return the EACCESS to the caller. Note that the VFS does not call
1196 * unlink on negative dentries currently.
1198 int cifs_unlink(struct inode *dir, struct dentry *dentry)
1202 char *full_path = NULL;
1203 struct inode *inode = dentry->d_inode;
1204 struct cifsInodeInfo *cifs_inode;
1205 struct super_block *sb = dir->i_sb;
1206 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
1207 struct tcon_link *tlink;
1208 struct cifs_tcon *tcon;
1209 struct TCP_Server_Info *server;
1210 struct iattr *attrs = NULL;
1211 __u32 dosattr = 0, origattr = 0;
1213 cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry);
1215 tlink = cifs_sb_tlink(cifs_sb);
1217 return PTR_ERR(tlink);
1218 tcon = tlink_tcon(tlink);
1219 server = tcon->ses->server;
1223 /* Unlink can be called from rename so we can not take the
1224 * sb->s_vfs_rename_mutex here */
1225 full_path = build_path_from_dentry(dentry);
1226 if (full_path == NULL) {
1231 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1232 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1233 rc = CIFSPOSIXDelFile(xid, tcon, full_path,
1234 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
1235 cifs_remap(cifs_sb));
1236 cifs_dbg(FYI, "posix del rc %d\n", rc);
1237 if ((rc == 0) || (rc == -ENOENT))
1238 goto psx_del_no_retry;
1242 if (!server->ops->unlink) {
1244 goto psx_del_no_retry;
1247 rc = server->ops->unlink(xid, tcon, full_path, cifs_sb);
1252 cifs_drop_nlink(inode);
1253 } else if (rc == -ENOENT) {
1255 } else if (rc == -EBUSY) {
1256 if (server->ops->rename_pending_delete) {
1257 rc = server->ops->rename_pending_delete(full_path,
1260 cifs_drop_nlink(inode);
1262 } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
1263 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
1264 if (attrs == NULL) {
1269 /* try to reset dos attributes */
1270 cifs_inode = CIFS_I(inode);
1271 origattr = cifs_inode->cifsAttrs;
1273 origattr |= ATTR_NORMAL;
1274 dosattr = origattr & ~ATTR_READONLY;
1276 dosattr |= ATTR_NORMAL;
1277 dosattr |= ATTR_HIDDEN;
1279 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
1283 goto retry_std_delete;
1286 /* undo the setattr if we errored out and it's needed */
1287 if (rc != 0 && dosattr != 0)
1288 cifs_set_file_info(inode, attrs, xid, full_path, origattr);
1292 cifs_inode = CIFS_I(inode);
1293 cifs_inode->time = 0; /* will force revalidate to get info
1295 inode->i_ctime = current_fs_time(sb);
1297 dir->i_ctime = dir->i_mtime = current_fs_time(sb);
1298 cifs_inode = CIFS_I(dir);
1299 CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
1304 cifs_put_tlink(tlink);
1309 cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
1310 const char *full_path, struct cifs_sb_info *cifs_sb,
1311 struct cifs_tcon *tcon, const unsigned int xid)
1314 struct inode *inode = NULL;
1317 rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
1320 rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb,
1327 * setting nlink not necessary except in cases where we failed to get it
1328 * from the server or was set bogus. Also, since this is a brand new
1329 * inode, no need to grab the i_lock before setting the i_nlink.
1331 if (inode->i_nlink < 2)
1332 set_nlink(inode, 2);
1333 mode &= ~current_umask();
1334 /* must turn on setgid bit if parent dir has it */
1335 if (parent->i_mode & S_ISGID)
1338 if (tcon->unix_ext) {
1339 struct cifs_unix_set_info_args args = {
1341 .ctime = NO_CHANGE_64,
1342 .atime = NO_CHANGE_64,
1343 .mtime = NO_CHANGE_64,
1346 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1347 args.uid = current_fsuid();
1348 if (parent->i_mode & S_ISGID)
1349 args.gid = parent->i_gid;
1351 args.gid = current_fsgid();
1353 args.uid = INVALID_UID; /* no change */
1354 args.gid = INVALID_GID; /* no change */
1356 CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1358 cifs_remap(cifs_sb));
1360 struct TCP_Server_Info *server = tcon->ses->server;
1361 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1362 (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo)
1363 server->ops->mkdir_setinfo(inode, full_path, cifs_sb,
1365 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
1366 inode->i_mode = (mode | S_IFDIR);
1368 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1369 inode->i_uid = current_fsuid();
1370 if (inode->i_mode & S_ISGID)
1371 inode->i_gid = parent->i_gid;
1373 inode->i_gid = current_fsgid();
1376 d_instantiate(dentry, inode);
1381 cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode,
1382 const char *full_path, struct cifs_sb_info *cifs_sb,
1383 struct cifs_tcon *tcon, const unsigned int xid)
1387 FILE_UNIX_BASIC_INFO *info = NULL;
1388 struct inode *newinode = NULL;
1389 struct cifs_fattr fattr;
1391 info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1394 goto posix_mkdir_out;
1397 mode &= ~current_umask();
1398 rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode,
1399 NULL /* netfid */, info, &oplock, full_path,
1400 cifs_sb->local_nls, cifs_remap(cifs_sb));
1401 if (rc == -EOPNOTSUPP)
1402 goto posix_mkdir_out;
1404 cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc);
1406 goto posix_mkdir_out;
1409 if (info->Type == cpu_to_le32(-1))
1410 /* no return info, go query for it */
1411 goto posix_mkdir_get_info;
1413 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1414 * need to set uid/gid.
1417 cifs_unix_basic_to_fattr(&fattr, info, cifs_sb);
1418 cifs_fill_uniqueid(inode->i_sb, &fattr);
1419 newinode = cifs_iget(inode->i_sb, &fattr);
1421 goto posix_mkdir_get_info;
1423 d_instantiate(dentry, newinode);
1425 #ifdef CONFIG_CIFS_DEBUG2
1426 cifs_dbg(FYI, "instantiated dentry %p %pd to inode %p\n",
1427 dentry, dentry, newinode);
1429 if (newinode->i_nlink != 2)
1430 cifs_dbg(FYI, "unexpected number of links %d\n",
1437 posix_mkdir_get_info:
1438 rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon,
1440 goto posix_mkdir_out;
1443 int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
1447 struct cifs_sb_info *cifs_sb;
1448 struct tcon_link *tlink;
1449 struct cifs_tcon *tcon;
1450 struct TCP_Server_Info *server;
1453 cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n",
1456 cifs_sb = CIFS_SB(inode->i_sb);
1457 tlink = cifs_sb_tlink(cifs_sb);
1459 return PTR_ERR(tlink);
1460 tcon = tlink_tcon(tlink);
1464 full_path = build_path_from_dentry(direntry);
1465 if (full_path == NULL) {
1470 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1471 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1472 rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
1474 if (rc != -EOPNOTSUPP)
1478 server = tcon->ses->server;
1480 if (!server->ops->mkdir) {
1485 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1486 rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb);
1488 cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc);
1493 rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon,
1497 * Force revalidate to get parent dir info when needed since cached
1498 * attributes are invalid now.
1500 CIFS_I(inode)->time = 0;
1503 cifs_put_tlink(tlink);
1507 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1511 struct cifs_sb_info *cifs_sb;
1512 struct tcon_link *tlink;
1513 struct cifs_tcon *tcon;
1514 struct TCP_Server_Info *server;
1515 char *full_path = NULL;
1516 struct cifsInodeInfo *cifsInode;
1518 cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode);
1522 full_path = build_path_from_dentry(direntry);
1523 if (full_path == NULL) {
1528 cifs_sb = CIFS_SB(inode->i_sb);
1529 tlink = cifs_sb_tlink(cifs_sb);
1530 if (IS_ERR(tlink)) {
1531 rc = PTR_ERR(tlink);
1534 tcon = tlink_tcon(tlink);
1535 server = tcon->ses->server;
1537 if (!server->ops->rmdir) {
1539 cifs_put_tlink(tlink);
1543 rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);
1544 cifs_put_tlink(tlink);
1547 spin_lock(&direntry->d_inode->i_lock);
1548 i_size_write(direntry->d_inode, 0);
1549 clear_nlink(direntry->d_inode);
1550 spin_unlock(&direntry->d_inode->i_lock);
1553 cifsInode = CIFS_I(direntry->d_inode);
1554 /* force revalidate to go get info when needed */
1555 cifsInode->time = 0;
1557 cifsInode = CIFS_I(inode);
1559 * Force revalidate to get parent dir info when needed since cached
1560 * attributes are invalid now.
1562 cifsInode->time = 0;
1564 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1565 current_fs_time(inode->i_sb);
1574 cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
1575 const char *from_path, struct dentry *to_dentry,
1576 const char *to_path)
1578 struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
1579 struct tcon_link *tlink;
1580 struct cifs_tcon *tcon;
1581 struct TCP_Server_Info *server;
1582 struct cifs_fid fid;
1583 struct cifs_open_parms oparms;
1586 tlink = cifs_sb_tlink(cifs_sb);
1588 return PTR_ERR(tlink);
1589 tcon = tlink_tcon(tlink);
1590 server = tcon->ses->server;
1592 if (!server->ops->rename)
1595 /* try path-based rename first */
1596 rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb);
1599 * Don't bother with rename by filehandle unless file is busy and
1600 * source. Note that cross directory moves do not work with
1601 * rename by filehandle to various Windows servers.
1603 if (rc == 0 || rc != -EBUSY)
1604 goto do_rename_exit;
1606 /* open-file renames don't work across directories */
1607 if (to_dentry->d_parent != from_dentry->d_parent)
1608 goto do_rename_exit;
1611 oparms.cifs_sb = cifs_sb;
1612 /* open the file to be renamed -- we need DELETE perms */
1613 oparms.desired_access = DELETE;
1614 oparms.create_options = CREATE_NOT_DIR;
1615 oparms.disposition = FILE_OPEN;
1616 oparms.path = from_path;
1618 oparms.reconnect = false;
1620 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1622 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
1623 (const char *) to_dentry->d_name.name,
1624 cifs_sb->local_nls, cifs_remap(cifs_sb));
1625 CIFSSMBClose(xid, tcon, fid.netfid);
1628 cifs_put_tlink(tlink);
1633 cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
1634 struct inode *target_dir, struct dentry *target_dentry,
1637 char *from_name = NULL;
1638 char *to_name = NULL;
1639 struct cifs_sb_info *cifs_sb;
1640 struct tcon_link *tlink;
1641 struct cifs_tcon *tcon;
1642 FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
1643 FILE_UNIX_BASIC_INFO *info_buf_target;
1647 if (flags & ~RENAME_NOREPLACE)
1650 cifs_sb = CIFS_SB(source_dir->i_sb);
1651 tlink = cifs_sb_tlink(cifs_sb);
1653 return PTR_ERR(tlink);
1654 tcon = tlink_tcon(tlink);
1659 * we already have the rename sem so we do not need to
1660 * grab it again here to protect the path integrity
1662 from_name = build_path_from_dentry(source_dentry);
1663 if (from_name == NULL) {
1665 goto cifs_rename_exit;
1668 to_name = build_path_from_dentry(target_dentry);
1669 if (to_name == NULL) {
1671 goto cifs_rename_exit;
1674 rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
1678 * No-replace is the natural behavior for CIFS, so skip unlink hacks.
1680 if (flags & RENAME_NOREPLACE)
1681 goto cifs_rename_exit;
1683 if (rc == -EEXIST && tcon->unix_ext) {
1685 * Are src and dst hardlinks of same inode? We can only tell
1686 * with unix extensions enabled.
1689 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
1691 if (info_buf_source == NULL) {
1693 goto cifs_rename_exit;
1696 info_buf_target = info_buf_source + 1;
1697 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name,
1700 cifs_remap(cifs_sb));
1704 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name,
1707 cifs_remap(cifs_sb));
1709 if (tmprc == 0 && (info_buf_source->UniqueId ==
1710 info_buf_target->UniqueId)) {
1711 /* same file, POSIX says that this is a noop */
1713 goto cifs_rename_exit;
1717 * else ... BB we could add the same check for Windows by
1718 * checking the UniqueId via FILE_INTERNAL_INFO
1722 /* Try unlinking the target dentry if it's not negative */
1723 if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) {
1724 if (d_is_dir(target_dentry))
1725 tmprc = cifs_rmdir(target_dir, target_dentry);
1727 tmprc = cifs_unlink(target_dir, target_dentry);
1729 goto cifs_rename_exit;
1730 rc = cifs_do_rename(xid, source_dentry, from_name,
1731 target_dentry, to_name);
1734 /* force revalidate to go get info when needed */
1735 CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;
1737 source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime =
1738 target_dir->i_mtime = current_fs_time(source_dir->i_sb);
1741 kfree(info_buf_source);
1745 cifs_put_tlink(tlink);
1750 cifs_inode_needs_reval(struct inode *inode)
1752 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1753 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1755 if (CIFS_CACHE_READ(cifs_i))
1758 if (!lookupCacheEnabled)
1761 if (cifs_i->time == 0)
1764 if (!cifs_sb->actimeo)
1767 if (!time_in_range(jiffies, cifs_i->time,
1768 cifs_i->time + cifs_sb->actimeo))
1771 /* hardlinked files w/ noserverino get "special" treatment */
1772 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&
1773 S_ISREG(inode->i_mode) && inode->i_nlink != 1)
1780 * Zap the cache. Called when invalid_mapping flag is set.
1783 cifs_invalidate_mapping(struct inode *inode)
1787 if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
1788 rc = invalidate_inode_pages2(inode->i_mapping);
1790 cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
1794 cifs_fscache_reset_inode_cookie(inode);
1799 * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks
1800 * @word: long word containing the bit lock
1803 cifs_wait_bit_killable(struct wait_bit_key *key)
1805 if (fatal_signal_pending(current))
1806 return -ERESTARTSYS;
1807 freezable_schedule_unsafe();
1812 cifs_revalidate_mapping(struct inode *inode)
1815 unsigned long *flags = &CIFS_I(inode)->flags;
1817 rc = wait_on_bit_lock_action(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
1822 if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) {
1823 rc = cifs_invalidate_mapping(inode);
1825 set_bit(CIFS_INO_INVALID_MAPPING, flags);
1828 clear_bit_unlock(CIFS_INO_LOCK, flags);
1829 smp_mb__after_atomic();
1830 wake_up_bit(flags, CIFS_INO_LOCK);
1836 cifs_zap_mapping(struct inode *inode)
1838 set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
1839 return cifs_revalidate_mapping(inode);
1842 int cifs_revalidate_file_attr(struct file *filp)
1845 struct inode *inode = file_inode(filp);
1846 struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
1848 if (!cifs_inode_needs_reval(inode))
1851 if (tlink_tcon(cfile->tlink)->unix_ext)
1852 rc = cifs_get_file_info_unix(filp);
1854 rc = cifs_get_file_info(filp);
1859 int cifs_revalidate_dentry_attr(struct dentry *dentry)
1863 struct inode *inode = dentry->d_inode;
1864 struct super_block *sb = dentry->d_sb;
1865 char *full_path = NULL;
1870 if (!cifs_inode_needs_reval(inode))
1875 /* can not safely grab the rename sem here if rename calls revalidate
1876 since that would deadlock */
1877 full_path = build_path_from_dentry(dentry);
1878 if (full_path == NULL) {
1883 cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n",
1884 full_path, inode, inode->i_count.counter,
1885 dentry, dentry->d_time, jiffies);
1887 if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
1888 rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
1890 rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
1899 int cifs_revalidate_file(struct file *filp)
1902 struct inode *inode = file_inode(filp);
1904 rc = cifs_revalidate_file_attr(filp);
1908 return cifs_revalidate_mapping(inode);
1911 /* revalidate a dentry's inode attributes */
1912 int cifs_revalidate_dentry(struct dentry *dentry)
1915 struct inode *inode = dentry->d_inode;
1917 rc = cifs_revalidate_dentry_attr(dentry);
1921 return cifs_revalidate_mapping(inode);
1924 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1927 struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
1928 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
1929 struct inode *inode = dentry->d_inode;
1933 * We need to be sure that all dirty pages are written and the server
1934 * has actual ctime, mtime and file length.
1936 if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
1937 inode->i_mapping->nrpages != 0) {
1938 rc = filemap_fdatawait(inode->i_mapping);
1940 mapping_set_error(inode->i_mapping, rc);
1945 rc = cifs_revalidate_dentry_attr(dentry);
1949 generic_fillattr(inode, stat);
1950 stat->blksize = CIFS_MAX_MSGSIZE;
1951 stat->ino = CIFS_I(inode)->uniqueid;
1954 * If on a multiuser mount without unix extensions or cifsacl being
1955 * enabled, and the admin hasn't overridden them, set the ownership
1956 * to the fsuid/fsgid of the current process.
1958 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
1959 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1961 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
1962 stat->uid = current_fsuid();
1963 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
1964 stat->gid = current_fsgid();
1969 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1971 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1972 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1976 page = grab_cache_page(mapping, index);
1980 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1982 page_cache_release(page);
1986 static void cifs_setsize(struct inode *inode, loff_t offset)
1988 spin_lock(&inode->i_lock);
1989 i_size_write(inode, offset);
1990 spin_unlock(&inode->i_lock);
1992 truncate_pagecache(inode, offset);
1996 cifs_set_file_size(struct inode *inode, struct iattr *attrs,
1997 unsigned int xid, char *full_path)
2000 struct cifsFileInfo *open_file;
2001 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2002 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2003 struct tcon_link *tlink = NULL;
2004 struct cifs_tcon *tcon = NULL;
2005 struct TCP_Server_Info *server;
2006 struct cifs_io_parms io_parms;
2009 * To avoid spurious oplock breaks from server, in the case of
2010 * inodes that we already have open, avoid doing path based
2011 * setting of file size if we can do it by handle.
2012 * This keeps our caching token (oplock) and avoids timeouts
2013 * when the local oplock break takes longer to flush
2014 * writebehind data than the SMB timeout for the SetPathInfo
2015 * request would allow
2017 open_file = find_writable_file(cifsInode, true);
2019 tcon = tlink_tcon(open_file->tlink);
2020 server = tcon->ses->server;
2021 if (server->ops->set_file_size)
2022 rc = server->ops->set_file_size(xid, tcon, open_file,
2023 attrs->ia_size, false);
2026 cifsFileInfo_put(open_file);
2027 cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
2028 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2029 unsigned int bytes_written;
2031 io_parms.netfid = open_file->fid.netfid;
2032 io_parms.pid = open_file->pid;
2033 io_parms.tcon = tcon;
2034 io_parms.offset = 0;
2035 io_parms.length = attrs->ia_size;
2036 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
2038 cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
2047 tlink = cifs_sb_tlink(cifs_sb);
2049 return PTR_ERR(tlink);
2050 tcon = tlink_tcon(tlink);
2051 server = tcon->ses->server;
2055 * Set file size by pathname rather than by handle either because no
2056 * valid, writeable file handle for it was found or because there was
2057 * an error setting it by handle.
2059 if (server->ops->set_path_size)
2060 rc = server->ops->set_path_size(xid, tcon, full_path,
2061 attrs->ia_size, cifs_sb, false);
2064 cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
2065 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2069 rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
2070 GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
2071 &oplock, NULL, cifs_sb->local_nls,
2072 cifs_remap(cifs_sb));
2074 unsigned int bytes_written;
2076 io_parms.netfid = netfid;
2077 io_parms.pid = current->tgid;
2078 io_parms.tcon = tcon;
2079 io_parms.offset = 0;
2080 io_parms.length = attrs->ia_size;
2081 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
2083 cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
2084 CIFSSMBClose(xid, tcon, netfid);
2088 cifs_put_tlink(tlink);
2092 cifsInode->server_eof = attrs->ia_size;
2093 cifs_setsize(inode, attrs->ia_size);
2094 cifs_truncate_page(inode->i_mapping, inode->i_size);
2101 cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
2105 char *full_path = NULL;
2106 struct inode *inode = direntry->d_inode;
2107 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2108 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2109 struct tcon_link *tlink;
2110 struct cifs_tcon *pTcon;
2111 struct cifs_unix_set_info_args *args = NULL;
2112 struct cifsFileInfo *open_file;
2114 cifs_dbg(FYI, "setattr_unix on file %pd attrs->ia_valid=0x%x\n",
2115 direntry, attrs->ia_valid);
2119 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2120 attrs->ia_valid |= ATTR_FORCE;
2122 rc = inode_change_ok(inode, attrs);
2126 full_path = build_path_from_dentry(direntry);
2127 if (full_path == NULL) {
2133 * Attempt to flush data before changing attributes. We need to do
2134 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2135 * ownership or mode then we may also need to do this. Here, we take
2136 * the safe way out and just do the flush on all setattr requests. If
2137 * the flush returns error, store it to report later and continue.
2139 * BB: This should be smarter. Why bother flushing pages that
2140 * will be truncated anyway? Also, should we error out here if
2141 * the flush returns error?
2143 rc = filemap_write_and_wait(inode->i_mapping);
2144 mapping_set_error(inode->i_mapping, rc);
2147 if (attrs->ia_valid & ATTR_SIZE) {
2148 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2153 /* skip mode change if it's just for clearing setuid/setgid */
2154 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2155 attrs->ia_valid &= ~ATTR_MODE;
2157 args = kmalloc(sizeof(*args), GFP_KERNEL);
2163 /* set up the struct */
2164 if (attrs->ia_valid & ATTR_MODE)
2165 args->mode = attrs->ia_mode;
2167 args->mode = NO_CHANGE_64;
2169 if (attrs->ia_valid & ATTR_UID)
2170 args->uid = attrs->ia_uid;
2172 args->uid = INVALID_UID; /* no change */
2174 if (attrs->ia_valid & ATTR_GID)
2175 args->gid = attrs->ia_gid;
2177 args->gid = INVALID_GID; /* no change */
2179 if (attrs->ia_valid & ATTR_ATIME)
2180 args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
2182 args->atime = NO_CHANGE_64;
2184 if (attrs->ia_valid & ATTR_MTIME)
2185 args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
2187 args->mtime = NO_CHANGE_64;
2189 if (attrs->ia_valid & ATTR_CTIME)
2190 args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
2192 args->ctime = NO_CHANGE_64;
2195 open_file = find_writable_file(cifsInode, true);
2197 u16 nfid = open_file->fid.netfid;
2198 u32 npid = open_file->pid;
2199 pTcon = tlink_tcon(open_file->tlink);
2200 rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
2201 cifsFileInfo_put(open_file);
2203 tlink = cifs_sb_tlink(cifs_sb);
2204 if (IS_ERR(tlink)) {
2205 rc = PTR_ERR(tlink);
2208 pTcon = tlink_tcon(tlink);
2209 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
2211 cifs_sb->mnt_cifs_flags &
2212 CIFS_MOUNT_MAP_SPECIAL_CHR);
2213 cifs_put_tlink(tlink);
2219 if ((attrs->ia_valid & ATTR_SIZE) &&
2220 attrs->ia_size != i_size_read(inode))
2221 truncate_setsize(inode, attrs->ia_size);
2223 setattr_copy(inode, attrs);
2224 mark_inode_dirty(inode);
2226 /* force revalidate when any of these times are set since some
2227 of the fs types (eg ext3, fat) do not have fine enough
2228 time granularity to match protocol, and we do not have a
2229 a way (yet) to query the server fs's time granularity (and
2230 whether it rounds times down).
2232 if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2233 cifsInode->time = 0;
2242 cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
2245 kuid_t uid = INVALID_UID;
2246 kgid_t gid = INVALID_GID;
2247 struct inode *inode = direntry->d_inode;
2248 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2249 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2250 char *full_path = NULL;
2253 __u64 mode = NO_CHANGE_64;
2257 cifs_dbg(FYI, "setattr on file %pd attrs->iavalid 0x%x\n",
2258 direntry, attrs->ia_valid);
2260 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2261 attrs->ia_valid |= ATTR_FORCE;
2263 rc = inode_change_ok(inode, attrs);
2269 full_path = build_path_from_dentry(direntry);
2270 if (full_path == NULL) {
2277 * Attempt to flush data before changing attributes. We need to do
2278 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2279 * ownership or mode then we may also need to do this. Here, we take
2280 * the safe way out and just do the flush on all setattr requests. If
2281 * the flush returns error, store it to report later and continue.
2283 * BB: This should be smarter. Why bother flushing pages that
2284 * will be truncated anyway? Also, should we error out here if
2285 * the flush returns error?
2287 rc = filemap_write_and_wait(inode->i_mapping);
2288 mapping_set_error(inode->i_mapping, rc);
2291 if (attrs->ia_valid & ATTR_SIZE) {
2292 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2294 goto cifs_setattr_exit;
2297 if (attrs->ia_valid & ATTR_UID)
2298 uid = attrs->ia_uid;
2300 if (attrs->ia_valid & ATTR_GID)
2301 gid = attrs->ia_gid;
2303 #ifdef CONFIG_CIFS_ACL
2304 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2305 if (uid_valid(uid) || gid_valid(gid)) {
2306 rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
2309 cifs_dbg(FYI, "%s: Setting id failed with error: %d\n",
2311 goto cifs_setattr_exit;
2315 #endif /* CONFIG_CIFS_ACL */
2316 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
2317 attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
2319 /* skip mode change if it's just for clearing setuid/setgid */
2320 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2321 attrs->ia_valid &= ~ATTR_MODE;
2323 if (attrs->ia_valid & ATTR_MODE) {
2324 mode = attrs->ia_mode;
2326 #ifdef CONFIG_CIFS_ACL
2327 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2328 rc = id_mode_to_cifs_acl(inode, full_path, mode,
2329 INVALID_UID, INVALID_GID);
2331 cifs_dbg(FYI, "%s: Setting ACL failed with error: %d\n",
2333 goto cifs_setattr_exit;
2336 #endif /* CONFIG_CIFS_ACL */
2337 if (((mode & S_IWUGO) == 0) &&
2338 (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
2340 dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
2342 /* fix up mode if we're not using dynperm */
2343 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
2344 attrs->ia_mode = inode->i_mode & ~S_IWUGO;
2345 } else if ((mode & S_IWUGO) &&
2346 (cifsInode->cifsAttrs & ATTR_READONLY)) {
2348 dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
2349 /* Attributes of 0 are ignored */
2351 dosattr |= ATTR_NORMAL;
2353 /* reset local inode permissions to normal */
2354 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2355 attrs->ia_mode &= ~(S_IALLUGO);
2356 if (S_ISDIR(inode->i_mode))
2358 cifs_sb->mnt_dir_mode;
2361 cifs_sb->mnt_file_mode;
2363 } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2364 /* ignore mode change - ATTR_READONLY hasn't changed */
2365 attrs->ia_valid &= ~ATTR_MODE;
2369 if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
2370 ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
2371 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
2372 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2374 /* Even if error on time set, no sense failing the call if
2375 the server would set the time to a reasonable value anyway,
2376 and this check ensures that we are not being called from
2377 sys_utimes in which case we ought to fail the call back to
2378 the user when the server rejects the call */
2379 if ((rc) && (attrs->ia_valid &
2380 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
2384 /* do not need local check to inode_check_ok since the server does
2387 goto cifs_setattr_exit;
2389 if ((attrs->ia_valid & ATTR_SIZE) &&
2390 attrs->ia_size != i_size_read(inode))
2391 truncate_setsize(inode, attrs->ia_size);
2393 setattr_copy(inode, attrs);
2394 mark_inode_dirty(inode);
2403 cifs_setattr(struct dentry *direntry, struct iattr *attrs)
2405 struct inode *inode = direntry->d_inode;
2406 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2407 struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
2409 if (pTcon->unix_ext)
2410 return cifs_setattr_unix(direntry, attrs);
2412 return cifs_setattr_nounix(direntry, attrs);
2414 /* BB: add cifs_setattr_legacy for really old servers */
2418 void cifs_delete_inode(struct inode *inode)
2420 cifs_dbg(FYI, "In cifs_delete_inode, inode = 0x%p\n", inode);
2421 /* may have to add back in if and when safe distributed caching of
2422 directories added e.g. via FindNotify */