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_remap(cifs_sb));
377 cifs_put_tlink(tlink);
380 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
381 } else if (rc == -EREMOTE) {
382 cifs_create_dfs_fattr(&fattr, sb);
388 /* check for Minshall+French symlinks */
389 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
390 int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
393 cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
396 if (*pinode == NULL) {
398 cifs_fill_uniqueid(sb, &fattr);
399 *pinode = cifs_iget(sb, &fattr);
403 /* we already have inode, update it */
404 cifs_fattr_to_inode(*pinode, &fattr);
411 cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
412 struct cifs_sb_info *cifs_sb, unsigned int xid)
416 struct tcon_link *tlink;
417 struct cifs_tcon *tcon;
419 struct cifs_open_parms oparms;
420 struct cifs_io_parms io_parms;
422 unsigned int bytes_read;
424 int buf_type = CIFS_NO_BUFFER;
428 fattr->cf_mode &= ~S_IFMT;
430 if (fattr->cf_eof == 0) {
431 fattr->cf_mode |= S_IFIFO;
432 fattr->cf_dtype = DT_FIFO;
434 } else if (fattr->cf_eof < 8) {
435 fattr->cf_mode |= S_IFREG;
436 fattr->cf_dtype = DT_REG;
437 return -EINVAL; /* EOPNOTSUPP? */
440 tlink = cifs_sb_tlink(cifs_sb);
442 return PTR_ERR(tlink);
443 tcon = tlink_tcon(tlink);
446 oparms.cifs_sb = cifs_sb;
447 oparms.desired_access = GENERIC_READ;
448 oparms.create_options = CREATE_NOT_DIR;
449 oparms.disposition = FILE_OPEN;
452 oparms.reconnect = false;
454 if (tcon->ses->server->oplocks)
458 rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, NULL);
460 cifs_dbg(FYI, "check sfu type of %s, open rc = %d\n", path, rc);
461 cifs_put_tlink(tlink);
466 io_parms.netfid = fid.netfid;
467 io_parms.pid = current->tgid;
468 io_parms.tcon = tcon;
470 io_parms.length = 24;
472 rc = tcon->ses->server->ops->sync_read(xid, &fid, &io_parms,
473 &bytes_read, &pbuf, &buf_type);
474 if ((rc == 0) && (bytes_read >= 8)) {
475 if (memcmp("IntxBLK", pbuf, 8) == 0) {
476 cifs_dbg(FYI, "Block device\n");
477 fattr->cf_mode |= S_IFBLK;
478 fattr->cf_dtype = DT_BLK;
479 if (bytes_read == 24) {
480 /* we have enough to decode dev num */
481 __u64 mjr; /* major */
482 __u64 mnr; /* minor */
483 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
484 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
485 fattr->cf_rdev = MKDEV(mjr, mnr);
487 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
488 cifs_dbg(FYI, "Char device\n");
489 fattr->cf_mode |= S_IFCHR;
490 fattr->cf_dtype = DT_CHR;
491 if (bytes_read == 24) {
492 /* we have enough to decode dev num */
493 __u64 mjr; /* major */
494 __u64 mnr; /* minor */
495 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
496 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
497 fattr->cf_rdev = MKDEV(mjr, mnr);
499 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
500 cifs_dbg(FYI, "Symlink\n");
501 fattr->cf_mode |= S_IFLNK;
502 fattr->cf_dtype = DT_LNK;
504 fattr->cf_mode |= S_IFREG; /* file? */
505 fattr->cf_dtype = DT_REG;
509 fattr->cf_mode |= S_IFREG; /* then it is a file */
510 fattr->cf_dtype = DT_REG;
511 rc = -EOPNOTSUPP; /* or some unknown SFU type */
514 tcon->ses->server->ops->close(xid, tcon, &fid);
515 cifs_put_tlink(tlink);
519 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
522 * Fetch mode bits as provided by SFU.
524 * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ?
526 static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
527 struct cifs_sb_info *cifs_sb, unsigned int xid)
529 #ifdef CONFIG_CIFS_XATTR
533 struct tcon_link *tlink;
534 struct cifs_tcon *tcon;
536 tlink = cifs_sb_tlink(cifs_sb);
538 return PTR_ERR(tlink);
539 tcon = tlink_tcon(tlink);
541 if (tcon->ses->server->ops->query_all_EAs == NULL) {
542 cifs_put_tlink(tlink);
546 rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path,
547 "SETFILEBITS", ea_value, 4 /* size of buf */,
549 cifs_remap(cifs_sb));
550 cifs_put_tlink(tlink);
554 mode = le32_to_cpu(*((__le32 *)ea_value));
555 fattr->cf_mode &= ~SFBITS_MASK;
556 cifs_dbg(FYI, "special bits 0%o org mode 0%o\n",
557 mode, fattr->cf_mode);
558 fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode;
559 cifs_dbg(FYI, "special mode bits 0%o\n", mode);
568 /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
570 cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
571 struct cifs_sb_info *cifs_sb, bool adjust_tz,
574 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
576 memset(fattr, 0, sizeof(*fattr));
577 fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
578 if (info->DeletePending)
579 fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING;
581 if (info->LastAccessTime)
582 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
584 fattr->cf_atime = CURRENT_TIME;
586 fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
587 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
590 fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
591 fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
594 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
595 fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
596 fattr->cf_createtime = le64_to_cpu(info->CreationTime);
598 fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
601 fattr->cf_mode = S_IFLNK;
602 fattr->cf_dtype = DT_LNK;
603 } else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
604 fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
605 fattr->cf_dtype = DT_DIR;
607 * Server can return wrong NumberOfLinks value for directories
608 * when Unix extensions are disabled - fake it.
611 fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
613 fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
614 fattr->cf_dtype = DT_REG;
616 /* clear write bits if ATTR_READONLY is set */
617 if (fattr->cf_cifsattrs & ATTR_READONLY)
618 fattr->cf_mode &= ~(S_IWUGO);
621 * Don't accept zero nlink from non-unix servers unless
622 * delete is pending. Instead mark it as unknown.
624 if ((fattr->cf_nlink < 1) && !tcon->unix_ext &&
625 !info->DeletePending) {
626 cifs_dbg(1, "bogus file nlink value %u\n",
628 fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
632 fattr->cf_uid = cifs_sb->mnt_uid;
633 fattr->cf_gid = cifs_sb->mnt_gid;
637 cifs_get_file_info(struct file *filp)
641 FILE_ALL_INFO find_data;
642 struct cifs_fattr fattr;
643 struct inode *inode = file_inode(filp);
644 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
645 struct cifsFileInfo *cfile = filp->private_data;
646 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
647 struct TCP_Server_Info *server = tcon->ses->server;
649 if (!server->ops->query_file_info)
653 rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data);
656 cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false,
660 cifs_create_dfs_fattr(&fattr, inode->i_sb);
666 * FIXME: legacy server -- fall back to path-based call?
667 * for now, just skip revalidating and mark inode for
671 CIFS_I(inode)->time = 0;
677 * don't bother with SFU junk here -- just mark inode as needing
680 fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
681 fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
682 cifs_fattr_to_inode(inode, &fattr);
689 cifs_get_inode_info(struct inode **inode, const char *full_path,
690 FILE_ALL_INFO *data, struct super_block *sb, int xid,
691 const struct cifs_fid *fid)
693 bool validinum = false;
695 int rc = 0, tmprc = ENOSYS;
696 struct cifs_tcon *tcon;
697 struct TCP_Server_Info *server;
698 struct tcon_link *tlink;
699 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
701 bool adjust_tz = false;
702 struct cifs_fattr fattr;
703 struct cifs_search_info *srchinf = NULL;
704 bool symlink = false;
706 tlink = cifs_sb_tlink(cifs_sb);
708 return PTR_ERR(tlink);
709 tcon = tlink_tcon(tlink);
710 server = tcon->ses->server;
712 cifs_dbg(FYI, "Getting info on %s\n", full_path);
714 if ((data == NULL) && (*inode != NULL)) {
715 if (CIFS_CACHE_READ(CIFS_I(*inode))) {
716 cifs_dbg(FYI, "No need to revalidate cached inode sizes\n");
721 /* if inode info is not passed, get it from server */
723 if (!server->ops->query_path_info) {
727 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
732 data = (FILE_ALL_INFO *)buf;
733 rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
734 data, &adjust_tz, &symlink);
738 cifs_all_info_to_fattr(&fattr, data, cifs_sb, adjust_tz,
740 } else if (rc == -EREMOTE) {
741 cifs_create_dfs_fattr(&fattr, sb);
743 } else if (rc == -EACCES && backup_cred(cifs_sb)) {
744 srchinf = kzalloc(sizeof(struct cifs_search_info),
746 if (srchinf == NULL) {
751 srchinf->endOfSearch = false;
752 srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
754 srchflgs = CIFS_SEARCH_CLOSE_ALWAYS |
755 CIFS_SEARCH_CLOSE_AT_END |
756 CIFS_SEARCH_BACKUP_SEARCH;
758 rc = CIFSFindFirst(xid, tcon, full_path,
759 cifs_sb, NULL, srchflgs, srchinf, false);
762 (FILE_ALL_INFO *)srchinf->srch_entries_start;
764 cifs_dir_info_to_fattr(&fattr,
765 (FILE_DIRECTORY_INFO *)data, cifs_sb);
766 fattr.cf_uniqueid = le64_to_cpu(
767 ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId);
770 cifs_buf_release(srchinf->ntwrk_buf_start);
779 * If an inode wasn't passed in, then get the inode number
781 * Is an i_ino of zero legal? Can we use that to check if the server
782 * supports returning inode numbers? Are there other sanity checks we
783 * can use to ensure that the server is really filling in that field?
785 if (*inode == NULL) {
786 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
787 if (validinum == false) {
788 if (server->ops->get_srv_inum)
789 tmprc = server->ops->get_srv_inum(xid,
790 tcon, cifs_sb, full_path,
791 &fattr.cf_uniqueid, data);
793 cifs_dbg(FYI, "GetSrvInodeNum rc %d\n",
795 fattr.cf_uniqueid = iunique(sb, ROOT_I);
796 cifs_autodisable_serverino(cifs_sb);
800 fattr.cf_uniqueid = iunique(sb, ROOT_I);
802 fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
804 /* query for SFU type info if supported and needed */
805 if (fattr.cf_cifsattrs & ATTR_SYSTEM &&
806 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
807 tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid);
809 cifs_dbg(FYI, "cifs_sfu_type failed: %d\n", tmprc);
812 #ifdef CONFIG_CIFS_ACL
813 /* fill in 0777 bits from ACL */
814 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
815 rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, full_path, fid);
817 cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n",
822 #endif /* CONFIG_CIFS_ACL */
824 /* fill in remaining high mode bits e.g. SUID, VTX */
825 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
826 cifs_sfu_mode(&fattr, full_path, cifs_sb, xid);
828 /* check for Minshall+French symlinks */
829 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
830 tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
833 cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
837 *inode = cifs_iget(sb, &fattr);
841 cifs_fattr_to_inode(*inode, &fattr);
846 cifs_put_tlink(tlink);
850 static const struct inode_operations cifs_ipc_inode_ops = {
851 .lookup = cifs_lookup,
855 cifs_find_inode(struct inode *inode, void *opaque)
857 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
859 /* don't match inode with different uniqueid */
860 if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid)
863 /* use createtime like an i_generation field */
864 if (CIFS_I(inode)->createtime != fattr->cf_createtime)
867 /* don't match inode of different type */
868 if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
871 /* if it's not a directory or has no dentries, then flag it */
872 if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry))
873 fattr->cf_flags |= CIFS_FATTR_INO_COLLISION;
879 cifs_init_inode(struct inode *inode, void *opaque)
881 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
883 CIFS_I(inode)->uniqueid = fattr->cf_uniqueid;
884 CIFS_I(inode)->createtime = fattr->cf_createtime;
889 * walk dentry list for an inode and report whether it has aliases that
890 * are hashed. We use this to determine if a directory inode can actually
894 inode_has_hashed_dentries(struct inode *inode)
896 struct dentry *dentry;
898 spin_lock(&inode->i_lock);
899 hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {
900 if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
901 spin_unlock(&inode->i_lock);
905 spin_unlock(&inode->i_lock);
909 /* Given fattrs, get a corresponding inode */
911 cifs_iget(struct super_block *sb, struct cifs_fattr *fattr)
917 cifs_dbg(FYI, "looking for uniqueid=%llu\n", fattr->cf_uniqueid);
919 /* hash down to 32-bits on 32-bit arch */
920 hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid);
922 inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr);
924 /* was there a potentially problematic inode collision? */
925 if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) {
926 fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION;
928 if (inode_has_hashed_dentries(inode)) {
929 cifs_autodisable_serverino(CIFS_SB(sb));
931 fattr->cf_uniqueid = iunique(sb, ROOT_I);
932 goto retry_iget5_locked;
936 cifs_fattr_to_inode(inode, fattr);
937 if (sb->s_flags & MS_NOATIME)
938 inode->i_flags |= S_NOATIME | S_NOCMTIME;
939 if (inode->i_state & I_NEW) {
941 #ifdef CONFIG_CIFS_FSCACHE
942 /* initialize per-inode cache cookie pointer */
943 CIFS_I(inode)->fscache = NULL;
945 unlock_new_inode(inode);
952 /* gets root inode */
953 struct inode *cifs_root_iget(struct super_block *sb)
956 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
957 struct inode *inode = NULL;
959 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
962 if (tcon->unix_ext) {
963 rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
964 /* some servers mistakenly claim POSIX support */
965 if (rc != -EOPNOTSUPP)
967 cifs_dbg(VFS, "server does not support POSIX extensions");
968 tcon->unix_ext = false;
971 rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
979 #ifdef CONFIG_CIFS_FSCACHE
980 /* populate tcon->resource_id */
981 tcon->resource_id = CIFS_I(inode)->uniqueid;
984 if (rc && tcon->ipc) {
985 cifs_dbg(FYI, "ipc connection - fake read inode\n");
986 spin_lock(&inode->i_lock);
987 inode->i_mode |= S_IFDIR;
989 inode->i_op = &cifs_ipc_inode_ops;
990 inode->i_fop = &simple_dir_operations;
991 inode->i_uid = cifs_sb->mnt_uid;
992 inode->i_gid = cifs_sb->mnt_gid;
993 spin_unlock(&inode->i_lock);
1000 /* can not call macro free_xid here since in a void func
1001 * TODO: This is no longer true
1008 cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
1009 char *full_path, __u32 dosattr)
1011 bool set_time = false;
1012 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1013 struct TCP_Server_Info *server;
1014 FILE_BASIC_INFO info_buf;
1019 server = cifs_sb_master_tcon(cifs_sb)->ses->server;
1020 if (!server->ops->set_file_info)
1023 if (attrs->ia_valid & ATTR_ATIME) {
1025 info_buf.LastAccessTime =
1026 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1028 info_buf.LastAccessTime = 0;
1030 if (attrs->ia_valid & ATTR_MTIME) {
1032 info_buf.LastWriteTime =
1033 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1035 info_buf.LastWriteTime = 0;
1038 * Samba throws this field away, but windows may actually use it.
1039 * Do not set ctime unless other time stamps are changed explicitly
1040 * (i.e. by utimes()) since we would then have a mix of client and
1043 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1044 cifs_dbg(FYI, "CIFS - CTIME changed\n");
1045 info_buf.ChangeTime =
1046 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1048 info_buf.ChangeTime = 0;
1050 info_buf.CreationTime = 0; /* don't change */
1051 info_buf.Attributes = cpu_to_le32(dosattr);
1053 return server->ops->set_file_info(inode, full_path, &info_buf, xid);
1057 * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
1058 * and rename it to a random name that hopefully won't conflict with
1062 cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
1063 const unsigned int xid)
1067 struct cifs_fid fid;
1068 struct cifs_open_parms oparms;
1069 struct inode *inode = d_inode(dentry);
1070 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1071 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1072 struct tcon_link *tlink;
1073 struct cifs_tcon *tcon;
1074 __u32 dosattr, origattr;
1075 FILE_BASIC_INFO *info_buf = NULL;
1077 tlink = cifs_sb_tlink(cifs_sb);
1079 return PTR_ERR(tlink);
1080 tcon = tlink_tcon(tlink);
1083 * We cannot rename the file if the server doesn't support
1084 * CAP_INFOLEVEL_PASSTHRU
1086 if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
1092 oparms.cifs_sb = cifs_sb;
1093 oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
1094 oparms.create_options = CREATE_NOT_DIR;
1095 oparms.disposition = FILE_OPEN;
1096 oparms.path = full_path;
1098 oparms.reconnect = false;
1100 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1104 origattr = cifsInode->cifsAttrs;
1106 origattr |= ATTR_NORMAL;
1108 dosattr = origattr & ~ATTR_READONLY;
1110 dosattr |= ATTR_NORMAL;
1111 dosattr |= ATTR_HIDDEN;
1113 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1114 if (dosattr != origattr) {
1115 info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
1116 if (info_buf == NULL) {
1120 info_buf->Attributes = cpu_to_le32(dosattr);
1121 rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1123 /* although we would like to mark the file hidden
1124 if that fails we will still try to rename it */
1126 cifsInode->cifsAttrs = dosattr;
1128 dosattr = origattr; /* since not able to change them */
1131 /* rename the file */
1132 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
1134 cifs_remap(cifs_sb));
1140 /* try to set DELETE_ON_CLOSE */
1141 if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
1142 rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
1145 * some samba versions return -ENOENT when we try to set the
1146 * file disposition here. Likely a samba bug, but work around
1147 * it for now. This means that some cifsXXX files may hang
1148 * around after they shouldn't.
1150 * BB: remove this hack after more servers have the fix
1158 set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
1162 CIFSSMBClose(xid, tcon, fid.netfid);
1165 cifs_put_tlink(tlink);
1169 * reset everything back to the original state. Don't bother
1170 * dealing with errors here since we can't do anything about
1174 CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
1175 cifs_sb->local_nls, cifs_remap(cifs_sb));
1177 if (dosattr != origattr) {
1178 info_buf->Attributes = cpu_to_le32(origattr);
1179 if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1181 cifsInode->cifsAttrs = origattr;
1187 /* copied from fs/nfs/dir.c with small changes */
1189 cifs_drop_nlink(struct inode *inode)
1191 spin_lock(&inode->i_lock);
1192 if (inode->i_nlink > 0)
1194 spin_unlock(&inode->i_lock);
1198 * If d_inode(dentry) is null (usually meaning the cached dentry
1199 * is a negative dentry) then we would attempt a standard SMB delete, but
1200 * if that fails we can not attempt the fall back mechanisms on EACCESS
1201 * but will return the EACCESS to the caller. Note that the VFS does not call
1202 * unlink on negative dentries currently.
1204 int cifs_unlink(struct inode *dir, struct dentry *dentry)
1208 char *full_path = NULL;
1209 struct inode *inode = d_inode(dentry);
1210 struct cifsInodeInfo *cifs_inode;
1211 struct super_block *sb = dir->i_sb;
1212 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
1213 struct tcon_link *tlink;
1214 struct cifs_tcon *tcon;
1215 struct TCP_Server_Info *server;
1216 struct iattr *attrs = NULL;
1217 __u32 dosattr = 0, origattr = 0;
1219 cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry);
1221 tlink = cifs_sb_tlink(cifs_sb);
1223 return PTR_ERR(tlink);
1224 tcon = tlink_tcon(tlink);
1225 server = tcon->ses->server;
1229 /* Unlink can be called from rename so we can not take the
1230 * sb->s_vfs_rename_mutex here */
1231 full_path = build_path_from_dentry(dentry);
1232 if (full_path == NULL) {
1237 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1238 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1239 rc = CIFSPOSIXDelFile(xid, tcon, full_path,
1240 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
1241 cifs_remap(cifs_sb));
1242 cifs_dbg(FYI, "posix del rc %d\n", rc);
1243 if ((rc == 0) || (rc == -ENOENT))
1244 goto psx_del_no_retry;
1248 if (!server->ops->unlink) {
1250 goto psx_del_no_retry;
1253 rc = server->ops->unlink(xid, tcon, full_path, cifs_sb);
1258 cifs_drop_nlink(inode);
1259 } else if (rc == -ENOENT) {
1261 } else if (rc == -EBUSY) {
1262 if (server->ops->rename_pending_delete) {
1263 rc = server->ops->rename_pending_delete(full_path,
1266 cifs_drop_nlink(inode);
1268 } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
1269 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
1270 if (attrs == NULL) {
1275 /* try to reset dos attributes */
1276 cifs_inode = CIFS_I(inode);
1277 origattr = cifs_inode->cifsAttrs;
1279 origattr |= ATTR_NORMAL;
1280 dosattr = origattr & ~ATTR_READONLY;
1282 dosattr |= ATTR_NORMAL;
1283 dosattr |= ATTR_HIDDEN;
1285 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
1289 goto retry_std_delete;
1292 /* undo the setattr if we errored out and it's needed */
1293 if (rc != 0 && dosattr != 0)
1294 cifs_set_file_info(inode, attrs, xid, full_path, origattr);
1298 cifs_inode = CIFS_I(inode);
1299 cifs_inode->time = 0; /* will force revalidate to get info
1301 inode->i_ctime = current_fs_time(sb);
1303 dir->i_ctime = dir->i_mtime = current_fs_time(sb);
1304 cifs_inode = CIFS_I(dir);
1305 CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
1310 cifs_put_tlink(tlink);
1315 cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
1316 const char *full_path, struct cifs_sb_info *cifs_sb,
1317 struct cifs_tcon *tcon, const unsigned int xid)
1320 struct inode *inode = NULL;
1323 rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
1326 rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb,
1333 * setting nlink not necessary except in cases where we failed to get it
1334 * from the server or was set bogus. Also, since this is a brand new
1335 * inode, no need to grab the i_lock before setting the i_nlink.
1337 if (inode->i_nlink < 2)
1338 set_nlink(inode, 2);
1339 mode &= ~current_umask();
1340 /* must turn on setgid bit if parent dir has it */
1341 if (parent->i_mode & S_ISGID)
1344 if (tcon->unix_ext) {
1345 struct cifs_unix_set_info_args args = {
1347 .ctime = NO_CHANGE_64,
1348 .atime = NO_CHANGE_64,
1349 .mtime = NO_CHANGE_64,
1352 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1353 args.uid = current_fsuid();
1354 if (parent->i_mode & S_ISGID)
1355 args.gid = parent->i_gid;
1357 args.gid = current_fsgid();
1359 args.uid = INVALID_UID; /* no change */
1360 args.gid = INVALID_GID; /* no change */
1362 CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1364 cifs_remap(cifs_sb));
1366 struct TCP_Server_Info *server = tcon->ses->server;
1367 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1368 (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo)
1369 server->ops->mkdir_setinfo(inode, full_path, cifs_sb,
1371 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
1372 inode->i_mode = (mode | S_IFDIR);
1374 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1375 inode->i_uid = current_fsuid();
1376 if (inode->i_mode & S_ISGID)
1377 inode->i_gid = parent->i_gid;
1379 inode->i_gid = current_fsgid();
1382 d_instantiate(dentry, inode);
1387 cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode,
1388 const char *full_path, struct cifs_sb_info *cifs_sb,
1389 struct cifs_tcon *tcon, const unsigned int xid)
1393 FILE_UNIX_BASIC_INFO *info = NULL;
1394 struct inode *newinode = NULL;
1395 struct cifs_fattr fattr;
1397 info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1400 goto posix_mkdir_out;
1403 mode &= ~current_umask();
1404 rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode,
1405 NULL /* netfid */, info, &oplock, full_path,
1406 cifs_sb->local_nls, cifs_remap(cifs_sb));
1407 if (rc == -EOPNOTSUPP)
1408 goto posix_mkdir_out;
1410 cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc);
1412 goto posix_mkdir_out;
1415 if (info->Type == cpu_to_le32(-1))
1416 /* no return info, go query for it */
1417 goto posix_mkdir_get_info;
1419 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1420 * need to set uid/gid.
1423 cifs_unix_basic_to_fattr(&fattr, info, cifs_sb);
1424 cifs_fill_uniqueid(inode->i_sb, &fattr);
1425 newinode = cifs_iget(inode->i_sb, &fattr);
1427 goto posix_mkdir_get_info;
1429 d_instantiate(dentry, newinode);
1431 #ifdef CONFIG_CIFS_DEBUG2
1432 cifs_dbg(FYI, "instantiated dentry %p %pd to inode %p\n",
1433 dentry, dentry, newinode);
1435 if (newinode->i_nlink != 2)
1436 cifs_dbg(FYI, "unexpected number of links %d\n",
1443 posix_mkdir_get_info:
1444 rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon,
1446 goto posix_mkdir_out;
1449 int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
1453 struct cifs_sb_info *cifs_sb;
1454 struct tcon_link *tlink;
1455 struct cifs_tcon *tcon;
1456 struct TCP_Server_Info *server;
1459 cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n",
1462 cifs_sb = CIFS_SB(inode->i_sb);
1463 tlink = cifs_sb_tlink(cifs_sb);
1465 return PTR_ERR(tlink);
1466 tcon = tlink_tcon(tlink);
1470 full_path = build_path_from_dentry(direntry);
1471 if (full_path == NULL) {
1476 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1477 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1478 rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
1480 if (rc != -EOPNOTSUPP)
1484 server = tcon->ses->server;
1486 if (!server->ops->mkdir) {
1491 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1492 rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb);
1494 cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc);
1499 rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon,
1503 * Force revalidate to get parent dir info when needed since cached
1504 * attributes are invalid now.
1506 CIFS_I(inode)->time = 0;
1509 cifs_put_tlink(tlink);
1513 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1517 struct cifs_sb_info *cifs_sb;
1518 struct tcon_link *tlink;
1519 struct cifs_tcon *tcon;
1520 struct TCP_Server_Info *server;
1521 char *full_path = NULL;
1522 struct cifsInodeInfo *cifsInode;
1524 cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode);
1528 full_path = build_path_from_dentry(direntry);
1529 if (full_path == NULL) {
1534 cifs_sb = CIFS_SB(inode->i_sb);
1535 tlink = cifs_sb_tlink(cifs_sb);
1536 if (IS_ERR(tlink)) {
1537 rc = PTR_ERR(tlink);
1540 tcon = tlink_tcon(tlink);
1541 server = tcon->ses->server;
1543 if (!server->ops->rmdir) {
1545 cifs_put_tlink(tlink);
1549 rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);
1550 cifs_put_tlink(tlink);
1553 spin_lock(&d_inode(direntry)->i_lock);
1554 i_size_write(d_inode(direntry), 0);
1555 clear_nlink(d_inode(direntry));
1556 spin_unlock(&d_inode(direntry)->i_lock);
1559 cifsInode = CIFS_I(d_inode(direntry));
1560 /* force revalidate to go get info when needed */
1561 cifsInode->time = 0;
1563 cifsInode = CIFS_I(inode);
1565 * Force revalidate to get parent dir info when needed since cached
1566 * attributes are invalid now.
1568 cifsInode->time = 0;
1570 d_inode(direntry)->i_ctime = inode->i_ctime = inode->i_mtime =
1571 current_fs_time(inode->i_sb);
1580 cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
1581 const char *from_path, struct dentry *to_dentry,
1582 const char *to_path)
1584 struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
1585 struct tcon_link *tlink;
1586 struct cifs_tcon *tcon;
1587 struct TCP_Server_Info *server;
1588 struct cifs_fid fid;
1589 struct cifs_open_parms oparms;
1592 tlink = cifs_sb_tlink(cifs_sb);
1594 return PTR_ERR(tlink);
1595 tcon = tlink_tcon(tlink);
1596 server = tcon->ses->server;
1598 if (!server->ops->rename)
1601 /* try path-based rename first */
1602 rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb);
1605 * Don't bother with rename by filehandle unless file is busy and
1606 * source. Note that cross directory moves do not work with
1607 * rename by filehandle to various Windows servers.
1609 if (rc == 0 || rc != -EBUSY)
1610 goto do_rename_exit;
1612 /* open-file renames don't work across directories */
1613 if (to_dentry->d_parent != from_dentry->d_parent)
1614 goto do_rename_exit;
1617 oparms.cifs_sb = cifs_sb;
1618 /* open the file to be renamed -- we need DELETE perms */
1619 oparms.desired_access = DELETE;
1620 oparms.create_options = CREATE_NOT_DIR;
1621 oparms.disposition = FILE_OPEN;
1622 oparms.path = from_path;
1624 oparms.reconnect = false;
1626 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1628 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
1629 (const char *) to_dentry->d_name.name,
1630 cifs_sb->local_nls, cifs_remap(cifs_sb));
1631 CIFSSMBClose(xid, tcon, fid.netfid);
1634 cifs_put_tlink(tlink);
1639 cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
1640 struct inode *target_dir, struct dentry *target_dentry,
1643 char *from_name = NULL;
1644 char *to_name = NULL;
1645 struct cifs_sb_info *cifs_sb;
1646 struct tcon_link *tlink;
1647 struct cifs_tcon *tcon;
1648 FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
1649 FILE_UNIX_BASIC_INFO *info_buf_target;
1653 if (flags & ~RENAME_NOREPLACE)
1656 cifs_sb = CIFS_SB(source_dir->i_sb);
1657 tlink = cifs_sb_tlink(cifs_sb);
1659 return PTR_ERR(tlink);
1660 tcon = tlink_tcon(tlink);
1665 * we already have the rename sem so we do not need to
1666 * grab it again here to protect the path integrity
1668 from_name = build_path_from_dentry(source_dentry);
1669 if (from_name == NULL) {
1671 goto cifs_rename_exit;
1674 to_name = build_path_from_dentry(target_dentry);
1675 if (to_name == NULL) {
1677 goto cifs_rename_exit;
1680 rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
1684 * No-replace is the natural behavior for CIFS, so skip unlink hacks.
1686 if (flags & RENAME_NOREPLACE)
1687 goto cifs_rename_exit;
1689 if (rc == -EEXIST && tcon->unix_ext) {
1691 * Are src and dst hardlinks of same inode? We can only tell
1692 * with unix extensions enabled.
1695 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
1697 if (info_buf_source == NULL) {
1699 goto cifs_rename_exit;
1702 info_buf_target = info_buf_source + 1;
1703 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name,
1706 cifs_remap(cifs_sb));
1710 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name,
1713 cifs_remap(cifs_sb));
1715 if (tmprc == 0 && (info_buf_source->UniqueId ==
1716 info_buf_target->UniqueId)) {
1717 /* same file, POSIX says that this is a noop */
1719 goto cifs_rename_exit;
1723 * else ... BB we could add the same check for Windows by
1724 * checking the UniqueId via FILE_INTERNAL_INFO
1728 /* Try unlinking the target dentry if it's not negative */
1729 if (d_really_is_positive(target_dentry) && (rc == -EACCES || rc == -EEXIST)) {
1730 if (d_is_dir(target_dentry))
1731 tmprc = cifs_rmdir(target_dir, target_dentry);
1733 tmprc = cifs_unlink(target_dir, target_dentry);
1735 goto cifs_rename_exit;
1736 rc = cifs_do_rename(xid, source_dentry, from_name,
1737 target_dentry, to_name);
1740 /* force revalidate to go get info when needed */
1741 CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;
1743 source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime =
1744 target_dir->i_mtime = current_fs_time(source_dir->i_sb);
1747 kfree(info_buf_source);
1751 cifs_put_tlink(tlink);
1756 cifs_inode_needs_reval(struct inode *inode)
1758 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1759 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1761 if (CIFS_CACHE_READ(cifs_i))
1764 if (!lookupCacheEnabled)
1767 if (cifs_i->time == 0)
1770 if (!cifs_sb->actimeo)
1773 if (!time_in_range(jiffies, cifs_i->time,
1774 cifs_i->time + cifs_sb->actimeo))
1777 /* hardlinked files w/ noserverino get "special" treatment */
1778 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&
1779 S_ISREG(inode->i_mode) && inode->i_nlink != 1)
1786 * Zap the cache. Called when invalid_mapping flag is set.
1789 cifs_invalidate_mapping(struct inode *inode)
1793 if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
1794 rc = invalidate_inode_pages2(inode->i_mapping);
1796 cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
1800 cifs_fscache_reset_inode_cookie(inode);
1805 * cifs_wait_bit_killable - helper for functions that are sleeping on bit locks
1806 * @word: long word containing the bit lock
1809 cifs_wait_bit_killable(struct wait_bit_key *key)
1811 if (fatal_signal_pending(current))
1812 return -ERESTARTSYS;
1813 freezable_schedule_unsafe();
1818 cifs_revalidate_mapping(struct inode *inode)
1821 unsigned long *flags = &CIFS_I(inode)->flags;
1823 rc = wait_on_bit_lock_action(flags, CIFS_INO_LOCK, cifs_wait_bit_killable,
1828 if (test_and_clear_bit(CIFS_INO_INVALID_MAPPING, flags)) {
1829 rc = cifs_invalidate_mapping(inode);
1831 set_bit(CIFS_INO_INVALID_MAPPING, flags);
1834 clear_bit_unlock(CIFS_INO_LOCK, flags);
1835 smp_mb__after_atomic();
1836 wake_up_bit(flags, CIFS_INO_LOCK);
1842 cifs_zap_mapping(struct inode *inode)
1844 set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
1845 return cifs_revalidate_mapping(inode);
1848 int cifs_revalidate_file_attr(struct file *filp)
1851 struct inode *inode = file_inode(filp);
1852 struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
1854 if (!cifs_inode_needs_reval(inode))
1857 if (tlink_tcon(cfile->tlink)->unix_ext)
1858 rc = cifs_get_file_info_unix(filp);
1860 rc = cifs_get_file_info(filp);
1865 int cifs_revalidate_dentry_attr(struct dentry *dentry)
1869 struct inode *inode = d_inode(dentry);
1870 struct super_block *sb = dentry->d_sb;
1871 char *full_path = NULL;
1876 if (!cifs_inode_needs_reval(inode))
1881 /* can not safely grab the rename sem here if rename calls revalidate
1882 since that would deadlock */
1883 full_path = build_path_from_dentry(dentry);
1884 if (full_path == NULL) {
1889 cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n",
1890 full_path, inode, inode->i_count.counter,
1891 dentry, dentry->d_time, jiffies);
1893 if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
1894 rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
1896 rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
1905 int cifs_revalidate_file(struct file *filp)
1908 struct inode *inode = file_inode(filp);
1910 rc = cifs_revalidate_file_attr(filp);
1914 return cifs_revalidate_mapping(inode);
1917 /* revalidate a dentry's inode attributes */
1918 int cifs_revalidate_dentry(struct dentry *dentry)
1921 struct inode *inode = d_inode(dentry);
1923 rc = cifs_revalidate_dentry_attr(dentry);
1927 return cifs_revalidate_mapping(inode);
1930 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1933 struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
1934 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
1935 struct inode *inode = d_inode(dentry);
1939 * We need to be sure that all dirty pages are written and the server
1940 * has actual ctime, mtime and file length.
1942 if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
1943 inode->i_mapping->nrpages != 0) {
1944 rc = filemap_fdatawait(inode->i_mapping);
1946 mapping_set_error(inode->i_mapping, rc);
1951 rc = cifs_revalidate_dentry_attr(dentry);
1955 generic_fillattr(inode, stat);
1956 stat->blksize = CIFS_MAX_MSGSIZE;
1957 stat->ino = CIFS_I(inode)->uniqueid;
1960 * If on a multiuser mount without unix extensions or cifsacl being
1961 * enabled, and the admin hasn't overridden them, set the ownership
1962 * to the fsuid/fsgid of the current process.
1964 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
1965 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1967 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
1968 stat->uid = current_fsuid();
1969 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
1970 stat->gid = current_fsgid();
1975 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1977 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1978 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1982 page = grab_cache_page(mapping, index);
1986 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1988 page_cache_release(page);
1992 static void cifs_setsize(struct inode *inode, loff_t offset)
1994 spin_lock(&inode->i_lock);
1995 i_size_write(inode, offset);
1996 spin_unlock(&inode->i_lock);
1998 truncate_pagecache(inode, offset);
2002 cifs_set_file_size(struct inode *inode, struct iattr *attrs,
2003 unsigned int xid, char *full_path)
2006 struct cifsFileInfo *open_file;
2007 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2008 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2009 struct tcon_link *tlink = NULL;
2010 struct cifs_tcon *tcon = NULL;
2011 struct TCP_Server_Info *server;
2012 struct cifs_io_parms io_parms;
2015 * To avoid spurious oplock breaks from server, in the case of
2016 * inodes that we already have open, avoid doing path based
2017 * setting of file size if we can do it by handle.
2018 * This keeps our caching token (oplock) and avoids timeouts
2019 * when the local oplock break takes longer to flush
2020 * writebehind data than the SMB timeout for the SetPathInfo
2021 * request would allow
2023 open_file = find_writable_file(cifsInode, true);
2025 tcon = tlink_tcon(open_file->tlink);
2026 server = tcon->ses->server;
2027 if (server->ops->set_file_size)
2028 rc = server->ops->set_file_size(xid, tcon, open_file,
2029 attrs->ia_size, false);
2032 cifsFileInfo_put(open_file);
2033 cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
2034 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2035 unsigned int bytes_written;
2037 io_parms.netfid = open_file->fid.netfid;
2038 io_parms.pid = open_file->pid;
2039 io_parms.tcon = tcon;
2040 io_parms.offset = 0;
2041 io_parms.length = attrs->ia_size;
2042 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
2044 cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
2053 tlink = cifs_sb_tlink(cifs_sb);
2055 return PTR_ERR(tlink);
2056 tcon = tlink_tcon(tlink);
2057 server = tcon->ses->server;
2061 * Set file size by pathname rather than by handle either because no
2062 * valid, writeable file handle for it was found or because there was
2063 * an error setting it by handle.
2065 if (server->ops->set_path_size)
2066 rc = server->ops->set_path_size(xid, tcon, full_path,
2067 attrs->ia_size, cifs_sb, false);
2070 cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
2071 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2075 rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
2076 GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
2077 &oplock, NULL, cifs_sb->local_nls,
2078 cifs_remap(cifs_sb));
2080 unsigned int bytes_written;
2082 io_parms.netfid = netfid;
2083 io_parms.pid = current->tgid;
2084 io_parms.tcon = tcon;
2085 io_parms.offset = 0;
2086 io_parms.length = attrs->ia_size;
2087 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
2089 cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
2090 CIFSSMBClose(xid, tcon, netfid);
2094 cifs_put_tlink(tlink);
2098 cifsInode->server_eof = attrs->ia_size;
2099 cifs_setsize(inode, attrs->ia_size);
2100 cifs_truncate_page(inode->i_mapping, inode->i_size);
2107 cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
2111 char *full_path = NULL;
2112 struct inode *inode = d_inode(direntry);
2113 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2114 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2115 struct tcon_link *tlink;
2116 struct cifs_tcon *pTcon;
2117 struct cifs_unix_set_info_args *args = NULL;
2118 struct cifsFileInfo *open_file;
2120 cifs_dbg(FYI, "setattr_unix on file %pd attrs->ia_valid=0x%x\n",
2121 direntry, attrs->ia_valid);
2125 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2126 attrs->ia_valid |= ATTR_FORCE;
2128 rc = inode_change_ok(inode, attrs);
2132 full_path = build_path_from_dentry(direntry);
2133 if (full_path == NULL) {
2139 * Attempt to flush data before changing attributes. We need to do
2140 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2141 * ownership or mode then we may also need to do this. Here, we take
2142 * the safe way out and just do the flush on all setattr requests. If
2143 * the flush returns error, store it to report later and continue.
2145 * BB: This should be smarter. Why bother flushing pages that
2146 * will be truncated anyway? Also, should we error out here if
2147 * the flush returns error?
2149 rc = filemap_write_and_wait(inode->i_mapping);
2150 mapping_set_error(inode->i_mapping, rc);
2153 if (attrs->ia_valid & ATTR_SIZE) {
2154 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2159 /* skip mode change if it's just for clearing setuid/setgid */
2160 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2161 attrs->ia_valid &= ~ATTR_MODE;
2163 args = kmalloc(sizeof(*args), GFP_KERNEL);
2169 /* set up the struct */
2170 if (attrs->ia_valid & ATTR_MODE)
2171 args->mode = attrs->ia_mode;
2173 args->mode = NO_CHANGE_64;
2175 if (attrs->ia_valid & ATTR_UID)
2176 args->uid = attrs->ia_uid;
2178 args->uid = INVALID_UID; /* no change */
2180 if (attrs->ia_valid & ATTR_GID)
2181 args->gid = attrs->ia_gid;
2183 args->gid = INVALID_GID; /* no change */
2185 if (attrs->ia_valid & ATTR_ATIME)
2186 args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
2188 args->atime = NO_CHANGE_64;
2190 if (attrs->ia_valid & ATTR_MTIME)
2191 args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
2193 args->mtime = NO_CHANGE_64;
2195 if (attrs->ia_valid & ATTR_CTIME)
2196 args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
2198 args->ctime = NO_CHANGE_64;
2201 open_file = find_writable_file(cifsInode, true);
2203 u16 nfid = open_file->fid.netfid;
2204 u32 npid = open_file->pid;
2205 pTcon = tlink_tcon(open_file->tlink);
2206 rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
2207 cifsFileInfo_put(open_file);
2209 tlink = cifs_sb_tlink(cifs_sb);
2210 if (IS_ERR(tlink)) {
2211 rc = PTR_ERR(tlink);
2214 pTcon = tlink_tcon(tlink);
2215 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
2217 cifs_remap(cifs_sb));
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 = d_inode(direntry);
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 = d_inode(direntry);
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 */