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 <asm/div64.h>
29 #include "cifsproto.h"
30 #include "cifs_debug.h"
31 #include "cifs_fs_sb.h"
35 static void cifs_set_ops(struct inode *inode)
37 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
39 switch (inode->i_mode & S_IFMT) {
41 inode->i_op = &cifs_file_inode_ops;
42 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
43 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
44 inode->i_fop = &cifs_file_direct_nobrl_ops;
46 inode->i_fop = &cifs_file_direct_ops;
47 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) {
48 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
49 inode->i_fop = &cifs_file_strict_nobrl_ops;
51 inode->i_fop = &cifs_file_strict_ops;
52 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
53 inode->i_fop = &cifs_file_nobrl_ops;
54 else { /* not direct, send byte range locks */
55 inode->i_fop = &cifs_file_ops;
58 /* check if server can support readpages */
59 if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf <
60 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
61 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
63 inode->i_data.a_ops = &cifs_addr_ops;
66 #ifdef CONFIG_CIFS_DFS_UPCALL
67 if (IS_AUTOMOUNT(inode)) {
68 inode->i_op = &cifs_dfs_referral_inode_operations;
70 #else /* NO DFS support, treat as a directory */
73 inode->i_op = &cifs_dir_inode_ops;
74 inode->i_fop = &cifs_dir_ops;
78 inode->i_op = &cifs_symlink_inode_ops;
81 init_special_inode(inode, inode->i_mode, inode->i_rdev);
86 /* check inode attributes against fattr. If they don't match, tag the
87 * inode for cache invalidation
90 cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
92 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
94 cifs_dbg(FYI, "%s: revalidating inode %llu\n",
95 __func__, cifs_i->uniqueid);
97 if (inode->i_state & I_NEW) {
98 cifs_dbg(FYI, "%s: inode %llu is new\n",
99 __func__, cifs_i->uniqueid);
103 /* don't bother with revalidation if we have an oplock */
104 if (CIFS_CACHE_READ(cifs_i)) {
105 cifs_dbg(FYI, "%s: inode %llu is oplocked\n",
106 __func__, cifs_i->uniqueid);
110 /* revalidate if mtime or size have changed */
111 if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) &&
112 cifs_i->server_eof == fattr->cf_eof) {
113 cifs_dbg(FYI, "%s: inode %llu is unchanged\n",
114 __func__, cifs_i->uniqueid);
118 cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n",
119 __func__, cifs_i->uniqueid);
120 cifs_i->invalid_mapping = true;
124 * copy nlink to the inode, unless it wasn't provided. Provide
125 * sane values if we don't have an existing one and none was provided
128 cifs_nlink_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
131 * if we're in a situation where we can't trust what we
132 * got from the server (readdir, some non-unix cases)
133 * fake reasonable values
135 if (fattr->cf_flags & CIFS_FATTR_UNKNOWN_NLINK) {
136 /* only provide fake values on a new inode */
137 if (inode->i_state & I_NEW) {
138 if (fattr->cf_cifsattrs & ATTR_DIRECTORY)
146 /* we trust the server, so update it */
147 set_nlink(inode, fattr->cf_nlink);
150 /* populate an inode with info from a cifs_fattr struct */
152 cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
154 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
155 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
157 cifs_revalidate_cache(inode, fattr);
159 spin_lock(&inode->i_lock);
160 inode->i_atime = fattr->cf_atime;
161 inode->i_mtime = fattr->cf_mtime;
162 inode->i_ctime = fattr->cf_ctime;
163 inode->i_rdev = fattr->cf_rdev;
164 cifs_nlink_fattr_to_inode(inode, fattr);
165 inode->i_uid = fattr->cf_uid;
166 inode->i_gid = fattr->cf_gid;
168 /* if dynperm is set, don't clobber existing mode */
169 if (inode->i_state & I_NEW ||
170 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM))
171 inode->i_mode = fattr->cf_mode;
173 cifs_i->cifsAttrs = fattr->cf_cifsattrs;
175 if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL)
178 cifs_i->time = jiffies;
180 cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING;
182 cifs_i->server_eof = fattr->cf_eof;
184 * Can't safely change the file size here if the client is writing to
185 * it due to potential races.
187 if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) {
188 i_size_write(inode, fattr->cf_eof);
191 * i_blocks is not related to (i_size / i_blksize),
192 * but instead 512 byte (2**9) size is required for
193 * calculating num blocks.
195 inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9;
197 spin_unlock(&inode->i_lock);
199 if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL)
200 inode->i_flags |= S_AUTOMOUNT;
201 if (inode->i_state & I_NEW)
206 cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr)
208 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
210 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
213 fattr->cf_uniqueid = iunique(sb, ROOT_I);
216 /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */
218 cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info,
219 struct cifs_sb_info *cifs_sb)
221 memset(fattr, 0, sizeof(*fattr));
222 fattr->cf_uniqueid = le64_to_cpu(info->UniqueId);
223 fattr->cf_bytes = le64_to_cpu(info->NumOfBytes);
224 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
226 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
227 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime);
228 fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange);
229 fattr->cf_mode = le64_to_cpu(info->Permissions);
232 * Since we set the inode type below we need to mask off
233 * to avoid strange results if bits set above.
235 fattr->cf_mode &= ~S_IFMT;
236 switch (le32_to_cpu(info->Type)) {
238 fattr->cf_mode |= S_IFREG;
239 fattr->cf_dtype = DT_REG;
242 fattr->cf_mode |= S_IFLNK;
243 fattr->cf_dtype = DT_LNK;
246 fattr->cf_mode |= S_IFDIR;
247 fattr->cf_dtype = DT_DIR;
250 fattr->cf_mode |= S_IFCHR;
251 fattr->cf_dtype = DT_CHR;
252 fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor),
253 le64_to_cpu(info->DevMinor) & MINORMASK);
256 fattr->cf_mode |= S_IFBLK;
257 fattr->cf_dtype = DT_BLK;
258 fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor),
259 le64_to_cpu(info->DevMinor) & MINORMASK);
262 fattr->cf_mode |= S_IFIFO;
263 fattr->cf_dtype = DT_FIFO;
266 fattr->cf_mode |= S_IFSOCK;
267 fattr->cf_dtype = DT_SOCK;
270 /* safest to call it a file if we do not know */
271 fattr->cf_mode |= S_IFREG;
272 fattr->cf_dtype = DT_REG;
273 cifs_dbg(FYI, "unknown type %d\n", le32_to_cpu(info->Type));
277 fattr->cf_uid = cifs_sb->mnt_uid;
278 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) {
279 u64 id = le64_to_cpu(info->Uid);
280 if (id < ((uid_t)-1)) {
281 kuid_t uid = make_kuid(&init_user_ns, id);
287 fattr->cf_gid = cifs_sb->mnt_gid;
288 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) {
289 u64 id = le64_to_cpu(info->Gid);
290 if (id < ((gid_t)-1)) {
291 kgid_t gid = make_kgid(&init_user_ns, id);
297 fattr->cf_nlink = le64_to_cpu(info->Nlinks);
301 * Fill a cifs_fattr struct with fake inode info.
303 * Needed to setup cifs_fattr data for the directory which is the
304 * junction to the new submount (ie to setup the fake directory
305 * which represents a DFS referral).
308 cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb)
310 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
312 cifs_dbg(FYI, "creating fake fattr for DFS referral\n");
314 memset(fattr, 0, sizeof(*fattr));
315 fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU;
316 fattr->cf_uid = cifs_sb->mnt_uid;
317 fattr->cf_gid = cifs_sb->mnt_gid;
318 fattr->cf_atime = CURRENT_TIME;
319 fattr->cf_ctime = CURRENT_TIME;
320 fattr->cf_mtime = CURRENT_TIME;
322 fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL;
326 cifs_get_file_info_unix(struct file *filp)
330 FILE_UNIX_BASIC_INFO find_data;
331 struct cifs_fattr fattr;
332 struct inode *inode = file_inode(filp);
333 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
334 struct cifsFileInfo *cfile = filp->private_data;
335 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
338 rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->fid.netfid, &find_data);
340 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
341 } else if (rc == -EREMOTE) {
342 cifs_create_dfs_fattr(&fattr, inode->i_sb);
346 cifs_fattr_to_inode(inode, &fattr);
351 int cifs_get_inode_info_unix(struct inode **pinode,
352 const unsigned char *full_path,
353 struct super_block *sb, unsigned int xid)
356 FILE_UNIX_BASIC_INFO find_data;
357 struct cifs_fattr fattr;
358 struct cifs_tcon *tcon;
359 struct tcon_link *tlink;
360 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
362 cifs_dbg(FYI, "Getting info on %s\n", full_path);
364 tlink = cifs_sb_tlink(cifs_sb);
366 return PTR_ERR(tlink);
367 tcon = tlink_tcon(tlink);
369 /* could have done a find first instead but this returns more info */
370 rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data,
371 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
372 CIFS_MOUNT_MAP_SPECIAL_CHR);
373 cifs_put_tlink(tlink);
376 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
377 } else if (rc == -EREMOTE) {
378 cifs_create_dfs_fattr(&fattr, sb);
384 /* check for Minshall+French symlinks */
385 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
386 int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
389 cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
392 if (*pinode == NULL) {
394 cifs_fill_uniqueid(sb, &fattr);
395 *pinode = cifs_iget(sb, &fattr);
399 /* we already have inode, update it */
400 cifs_fattr_to_inode(*pinode, &fattr);
407 cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
408 struct cifs_sb_info *cifs_sb, unsigned int xid)
412 struct tcon_link *tlink;
413 struct cifs_tcon *tcon;
415 struct cifs_open_parms oparms;
416 struct cifs_io_parms io_parms;
418 unsigned int bytes_read;
420 int buf_type = CIFS_NO_BUFFER;
424 fattr->cf_mode &= ~S_IFMT;
426 if (fattr->cf_eof == 0) {
427 fattr->cf_mode |= S_IFIFO;
428 fattr->cf_dtype = DT_FIFO;
430 } else if (fattr->cf_eof < 8) {
431 fattr->cf_mode |= S_IFREG;
432 fattr->cf_dtype = DT_REG;
433 return -EINVAL; /* EOPNOTSUPP? */
436 tlink = cifs_sb_tlink(cifs_sb);
438 return PTR_ERR(tlink);
439 tcon = tlink_tcon(tlink);
442 oparms.cifs_sb = cifs_sb;
443 oparms.desired_access = GENERIC_READ;
444 oparms.create_options = CREATE_NOT_DIR;
445 oparms.disposition = FILE_OPEN;
448 oparms.reconnect = false;
450 rc = CIFS_open(xid, &oparms, &oplock, NULL);
452 cifs_put_tlink(tlink);
457 io_parms.netfid = fid.netfid;
458 io_parms.pid = current->tgid;
459 io_parms.tcon = tcon;
461 io_parms.length = 24;
463 rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
464 if ((rc == 0) && (bytes_read >= 8)) {
465 if (memcmp("IntxBLK", pbuf, 8) == 0) {
466 cifs_dbg(FYI, "Block device\n");
467 fattr->cf_mode |= S_IFBLK;
468 fattr->cf_dtype = DT_BLK;
469 if (bytes_read == 24) {
470 /* we have enough to decode dev num */
471 __u64 mjr; /* major */
472 __u64 mnr; /* minor */
473 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
474 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
475 fattr->cf_rdev = MKDEV(mjr, mnr);
477 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
478 cifs_dbg(FYI, "Char device\n");
479 fattr->cf_mode |= S_IFCHR;
480 fattr->cf_dtype = DT_CHR;
481 if (bytes_read == 24) {
482 /* we have enough to decode dev num */
483 __u64 mjr; /* major */
484 __u64 mnr; /* minor */
485 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
486 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
487 fattr->cf_rdev = MKDEV(mjr, mnr);
489 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
490 cifs_dbg(FYI, "Symlink\n");
491 fattr->cf_mode |= S_IFLNK;
492 fattr->cf_dtype = DT_LNK;
494 fattr->cf_mode |= S_IFREG; /* file? */
495 fattr->cf_dtype = DT_REG;
499 fattr->cf_mode |= S_IFREG; /* then it is a file */
500 fattr->cf_dtype = DT_REG;
501 rc = -EOPNOTSUPP; /* or some unknown SFU type */
503 CIFSSMBClose(xid, tcon, fid.netfid);
504 cifs_put_tlink(tlink);
508 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
511 * Fetch mode bits as provided by SFU.
513 * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ?
515 static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
516 struct cifs_sb_info *cifs_sb, unsigned int xid)
518 #ifdef CONFIG_CIFS_XATTR
522 struct tcon_link *tlink;
523 struct cifs_tcon *tcon;
525 tlink = cifs_sb_tlink(cifs_sb);
527 return PTR_ERR(tlink);
528 tcon = tlink_tcon(tlink);
530 rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS",
531 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
532 cifs_sb->mnt_cifs_flags &
533 CIFS_MOUNT_MAP_SPECIAL_CHR);
534 cifs_put_tlink(tlink);
538 mode = le32_to_cpu(*((__le32 *)ea_value));
539 fattr->cf_mode &= ~SFBITS_MASK;
540 cifs_dbg(FYI, "special bits 0%o org mode 0%o\n",
541 mode, fattr->cf_mode);
542 fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode;
543 cifs_dbg(FYI, "special mode bits 0%o\n", mode);
552 /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
554 cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
555 struct cifs_sb_info *cifs_sb, bool adjust_tz,
558 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
560 memset(fattr, 0, sizeof(*fattr));
561 fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
562 if (info->DeletePending)
563 fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING;
565 if (info->LastAccessTime)
566 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
568 fattr->cf_atime = CURRENT_TIME;
570 fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
571 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
574 fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
575 fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
578 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
579 fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
580 fattr->cf_createtime = le64_to_cpu(info->CreationTime);
582 fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
585 fattr->cf_mode = S_IFLNK;
586 fattr->cf_dtype = DT_LNK;
587 } else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
588 fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
589 fattr->cf_dtype = DT_DIR;
591 * Server can return wrong NumberOfLinks value for directories
592 * when Unix extensions are disabled - fake it.
595 fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
597 fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
598 fattr->cf_dtype = DT_REG;
600 /* clear write bits if ATTR_READONLY is set */
601 if (fattr->cf_cifsattrs & ATTR_READONLY)
602 fattr->cf_mode &= ~(S_IWUGO);
605 * Don't accept zero nlink from non-unix servers unless
606 * delete is pending. Instead mark it as unknown.
608 if ((fattr->cf_nlink < 1) && !tcon->unix_ext &&
609 !info->DeletePending) {
610 cifs_dbg(1, "bogus file nlink value %u\n",
612 fattr->cf_flags |= CIFS_FATTR_UNKNOWN_NLINK;
616 fattr->cf_uid = cifs_sb->mnt_uid;
617 fattr->cf_gid = cifs_sb->mnt_gid;
621 cifs_get_file_info(struct file *filp)
625 FILE_ALL_INFO find_data;
626 struct cifs_fattr fattr;
627 struct inode *inode = file_inode(filp);
628 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
629 struct cifsFileInfo *cfile = filp->private_data;
630 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
631 struct TCP_Server_Info *server = tcon->ses->server;
633 if (!server->ops->query_file_info)
637 rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data);
640 cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false,
644 cifs_create_dfs_fattr(&fattr, inode->i_sb);
650 * FIXME: legacy server -- fall back to path-based call?
651 * for now, just skip revalidating and mark inode for
655 CIFS_I(inode)->time = 0;
661 * don't bother with SFU junk here -- just mark inode as needing
664 fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
665 fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
666 cifs_fattr_to_inode(inode, &fattr);
673 cifs_get_inode_info(struct inode **inode, const char *full_path,
674 FILE_ALL_INFO *data, struct super_block *sb, int xid,
677 bool validinum = false;
679 int rc = 0, tmprc = ENOSYS;
680 struct cifs_tcon *tcon;
681 struct TCP_Server_Info *server;
682 struct tcon_link *tlink;
683 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
685 bool adjust_tz = false;
686 struct cifs_fattr fattr;
687 struct cifs_search_info *srchinf = NULL;
688 bool symlink = false;
690 tlink = cifs_sb_tlink(cifs_sb);
692 return PTR_ERR(tlink);
693 tcon = tlink_tcon(tlink);
694 server = tcon->ses->server;
696 cifs_dbg(FYI, "Getting info on %s\n", full_path);
698 if ((data == NULL) && (*inode != NULL)) {
699 if (CIFS_CACHE_READ(CIFS_I(*inode))) {
700 cifs_dbg(FYI, "No need to revalidate cached inode sizes\n");
705 /* if inode info is not passed, get it from server */
707 if (!server->ops->query_path_info) {
711 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
716 data = (FILE_ALL_INFO *)buf;
717 rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path,
718 data, &adjust_tz, &symlink);
722 cifs_all_info_to_fattr(&fattr, data, cifs_sb, adjust_tz,
724 } else if (rc == -EREMOTE) {
725 cifs_create_dfs_fattr(&fattr, sb);
727 } else if (rc == -EACCES && backup_cred(cifs_sb)) {
728 srchinf = kzalloc(sizeof(struct cifs_search_info),
730 if (srchinf == NULL) {
735 srchinf->endOfSearch = false;
736 srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO;
738 srchflgs = CIFS_SEARCH_CLOSE_ALWAYS |
739 CIFS_SEARCH_CLOSE_AT_END |
740 CIFS_SEARCH_BACKUP_SEARCH;
742 rc = CIFSFindFirst(xid, tcon, full_path,
743 cifs_sb, NULL, srchflgs, srchinf, false);
746 (FILE_ALL_INFO *)srchinf->srch_entries_start;
748 cifs_dir_info_to_fattr(&fattr,
749 (FILE_DIRECTORY_INFO *)data, cifs_sb);
750 fattr.cf_uniqueid = le64_to_cpu(
751 ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId);
754 cifs_buf_release(srchinf->ntwrk_buf_start);
761 * If an inode wasn't passed in, then get the inode number
763 * Is an i_ino of zero legal? Can we use that to check if the server
764 * supports returning inode numbers? Are there other sanity checks we
765 * can use to ensure that the server is really filling in that field?
767 if (*inode == NULL) {
768 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
769 if (validinum == false) {
770 if (server->ops->get_srv_inum)
771 tmprc = server->ops->get_srv_inum(xid,
772 tcon, cifs_sb, full_path,
773 &fattr.cf_uniqueid, data);
775 cifs_dbg(FYI, "GetSrvInodeNum rc %d\n",
777 fattr.cf_uniqueid = iunique(sb, ROOT_I);
778 cifs_autodisable_serverino(cifs_sb);
782 fattr.cf_uniqueid = iunique(sb, ROOT_I);
784 fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid;
786 /* query for SFU type info if supported and needed */
787 if (fattr.cf_cifsattrs & ATTR_SYSTEM &&
788 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
789 tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid);
791 cifs_dbg(FYI, "cifs_sfu_type failed: %d\n", tmprc);
794 #ifdef CONFIG_CIFS_ACL
795 /* fill in 0777 bits from ACL */
796 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
797 rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, full_path, fid);
799 cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n",
804 #endif /* CONFIG_CIFS_ACL */
806 /* fill in remaining high mode bits e.g. SUID, VTX */
807 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
808 cifs_sfu_mode(&fattr, full_path, cifs_sb, xid);
810 /* check for Minshall+French symlinks */
811 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
812 tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr,
815 cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc);
819 *inode = cifs_iget(sb, &fattr);
823 cifs_fattr_to_inode(*inode, &fattr);
828 cifs_put_tlink(tlink);
832 static const struct inode_operations cifs_ipc_inode_ops = {
833 .lookup = cifs_lookup,
837 cifs_find_inode(struct inode *inode, void *opaque)
839 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
841 /* don't match inode with different uniqueid */
842 if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid)
845 /* use createtime like an i_generation field */
846 if (CIFS_I(inode)->createtime != fattr->cf_createtime)
849 /* don't match inode of different type */
850 if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
853 /* if it's not a directory or has no dentries, then flag it */
854 if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry))
855 fattr->cf_flags |= CIFS_FATTR_INO_COLLISION;
861 cifs_init_inode(struct inode *inode, void *opaque)
863 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
865 CIFS_I(inode)->uniqueid = fattr->cf_uniqueid;
866 CIFS_I(inode)->createtime = fattr->cf_createtime;
871 * walk dentry list for an inode and report whether it has aliases that
872 * are hashed. We use this to determine if a directory inode can actually
876 inode_has_hashed_dentries(struct inode *inode)
878 struct dentry *dentry;
880 spin_lock(&inode->i_lock);
881 hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
882 if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
883 spin_unlock(&inode->i_lock);
887 spin_unlock(&inode->i_lock);
891 /* Given fattrs, get a corresponding inode */
893 cifs_iget(struct super_block *sb, struct cifs_fattr *fattr)
899 cifs_dbg(FYI, "looking for uniqueid=%llu\n", fattr->cf_uniqueid);
901 /* hash down to 32-bits on 32-bit arch */
902 hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid);
904 inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr);
906 /* was there a potentially problematic inode collision? */
907 if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) {
908 fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION;
910 if (inode_has_hashed_dentries(inode)) {
911 cifs_autodisable_serverino(CIFS_SB(sb));
913 fattr->cf_uniqueid = iunique(sb, ROOT_I);
914 goto retry_iget5_locked;
918 cifs_fattr_to_inode(inode, fattr);
919 if (sb->s_flags & MS_NOATIME)
920 inode->i_flags |= S_NOATIME | S_NOCMTIME;
921 if (inode->i_state & I_NEW) {
923 if (S_ISREG(inode->i_mode))
924 inode->i_data.backing_dev_info = sb->s_bdi;
925 #ifdef CONFIG_CIFS_FSCACHE
926 /* initialize per-inode cache cookie pointer */
927 CIFS_I(inode)->fscache = NULL;
929 unlock_new_inode(inode);
936 /* gets root inode */
937 struct inode *cifs_root_iget(struct super_block *sb)
940 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
941 struct inode *inode = NULL;
943 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
947 rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
949 rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
956 #ifdef CONFIG_CIFS_FSCACHE
957 /* populate tcon->resource_id */
958 tcon->resource_id = CIFS_I(inode)->uniqueid;
961 if (rc && tcon->ipc) {
962 cifs_dbg(FYI, "ipc connection - fake read inode\n");
963 spin_lock(&inode->i_lock);
964 inode->i_mode |= S_IFDIR;
966 inode->i_op = &cifs_ipc_inode_ops;
967 inode->i_fop = &simple_dir_operations;
968 inode->i_uid = cifs_sb->mnt_uid;
969 inode->i_gid = cifs_sb->mnt_gid;
970 spin_unlock(&inode->i_lock);
977 /* can not call macro free_xid here since in a void func
978 * TODO: This is no longer true
985 cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
986 char *full_path, __u32 dosattr)
988 bool set_time = false;
989 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
990 struct TCP_Server_Info *server;
991 FILE_BASIC_INFO info_buf;
996 server = cifs_sb_master_tcon(cifs_sb)->ses->server;
997 if (!server->ops->set_file_info)
1000 if (attrs->ia_valid & ATTR_ATIME) {
1002 info_buf.LastAccessTime =
1003 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1005 info_buf.LastAccessTime = 0;
1007 if (attrs->ia_valid & ATTR_MTIME) {
1009 info_buf.LastWriteTime =
1010 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1012 info_buf.LastWriteTime = 0;
1015 * Samba throws this field away, but windows may actually use it.
1016 * Do not set ctime unless other time stamps are changed explicitly
1017 * (i.e. by utimes()) since we would then have a mix of client and
1020 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1021 cifs_dbg(FYI, "CIFS - CTIME changed\n");
1022 info_buf.ChangeTime =
1023 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1025 info_buf.ChangeTime = 0;
1027 info_buf.CreationTime = 0; /* don't change */
1028 info_buf.Attributes = cpu_to_le32(dosattr);
1030 return server->ops->set_file_info(inode, full_path, &info_buf, xid);
1034 * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
1035 * and rename it to a random name that hopefully won't conflict with
1039 cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
1040 const unsigned int xid)
1044 struct cifs_fid fid;
1045 struct cifs_open_parms oparms;
1046 struct inode *inode = dentry->d_inode;
1047 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1048 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1049 struct tcon_link *tlink;
1050 struct cifs_tcon *tcon;
1051 __u32 dosattr, origattr;
1052 FILE_BASIC_INFO *info_buf = NULL;
1054 tlink = cifs_sb_tlink(cifs_sb);
1056 return PTR_ERR(tlink);
1057 tcon = tlink_tcon(tlink);
1060 * We cannot rename the file if the server doesn't support
1061 * CAP_INFOLEVEL_PASSTHRU
1063 if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
1069 oparms.cifs_sb = cifs_sb;
1070 oparms.desired_access = DELETE | FILE_WRITE_ATTRIBUTES;
1071 oparms.create_options = CREATE_NOT_DIR;
1072 oparms.disposition = FILE_OPEN;
1073 oparms.path = full_path;
1075 oparms.reconnect = false;
1077 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1081 origattr = cifsInode->cifsAttrs;
1083 origattr |= ATTR_NORMAL;
1085 dosattr = origattr & ~ATTR_READONLY;
1087 dosattr |= ATTR_NORMAL;
1088 dosattr |= ATTR_HIDDEN;
1090 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1091 if (dosattr != origattr) {
1092 info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
1093 if (info_buf == NULL) {
1097 info_buf->Attributes = cpu_to_le32(dosattr);
1098 rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1100 /* although we would like to mark the file hidden
1101 if that fails we will still try to rename it */
1103 cifsInode->cifsAttrs = dosattr;
1105 dosattr = origattr; /* since not able to change them */
1108 /* rename the file */
1109 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, NULL,
1111 cifs_sb->mnt_cifs_flags &
1112 CIFS_MOUNT_MAP_SPECIAL_CHR);
1118 /* try to set DELETE_ON_CLOSE */
1119 if (!cifsInode->delete_pending) {
1120 rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
1123 * some samba versions return -ENOENT when we try to set the
1124 * file disposition here. Likely a samba bug, but work around
1125 * it for now. This means that some cifsXXX files may hang
1126 * around after they shouldn't.
1128 * BB: remove this hack after more servers have the fix
1136 cifsInode->delete_pending = true;
1140 CIFSSMBClose(xid, tcon, fid.netfid);
1143 cifs_put_tlink(tlink);
1147 * reset everything back to the original state. Don't bother
1148 * dealing with errors here since we can't do anything about
1152 CIFSSMBRenameOpenFile(xid, tcon, fid.netfid, dentry->d_name.name,
1153 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
1154 CIFS_MOUNT_MAP_SPECIAL_CHR);
1156 if (dosattr != origattr) {
1157 info_buf->Attributes = cpu_to_le32(origattr);
1158 if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, fid.netfid,
1160 cifsInode->cifsAttrs = origattr;
1166 /* copied from fs/nfs/dir.c with small changes */
1168 cifs_drop_nlink(struct inode *inode)
1170 spin_lock(&inode->i_lock);
1171 if (inode->i_nlink > 0)
1173 spin_unlock(&inode->i_lock);
1177 * If dentry->d_inode is null (usually meaning the cached dentry
1178 * is a negative dentry) then we would attempt a standard SMB delete, but
1179 * if that fails we can not attempt the fall back mechanisms on EACCESS
1180 * but will return the EACCESS to the caller. Note that the VFS does not call
1181 * unlink on negative dentries currently.
1183 int cifs_unlink(struct inode *dir, struct dentry *dentry)
1187 char *full_path = NULL;
1188 struct inode *inode = dentry->d_inode;
1189 struct cifsInodeInfo *cifs_inode;
1190 struct super_block *sb = dir->i_sb;
1191 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
1192 struct tcon_link *tlink;
1193 struct cifs_tcon *tcon;
1194 struct TCP_Server_Info *server;
1195 struct iattr *attrs = NULL;
1196 __u32 dosattr = 0, origattr = 0;
1198 cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry);
1200 tlink = cifs_sb_tlink(cifs_sb);
1202 return PTR_ERR(tlink);
1203 tcon = tlink_tcon(tlink);
1204 server = tcon->ses->server;
1208 /* Unlink can be called from rename so we can not take the
1209 * sb->s_vfs_rename_mutex here */
1210 full_path = build_path_from_dentry(dentry);
1211 if (full_path == NULL) {
1216 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1217 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1218 rc = CIFSPOSIXDelFile(xid, tcon, full_path,
1219 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
1220 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1221 cifs_dbg(FYI, "posix del rc %d\n", rc);
1222 if ((rc == 0) || (rc == -ENOENT))
1223 goto psx_del_no_retry;
1227 if (!server->ops->unlink) {
1229 goto psx_del_no_retry;
1232 rc = server->ops->unlink(xid, tcon, full_path, cifs_sb);
1237 cifs_drop_nlink(inode);
1238 } else if (rc == -ENOENT) {
1240 } else if (rc == -EBUSY) {
1241 if (server->ops->rename_pending_delete) {
1242 rc = server->ops->rename_pending_delete(full_path,
1245 cifs_drop_nlink(inode);
1247 } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
1248 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
1249 if (attrs == NULL) {
1254 /* try to reset dos attributes */
1255 cifs_inode = CIFS_I(inode);
1256 origattr = cifs_inode->cifsAttrs;
1258 origattr |= ATTR_NORMAL;
1259 dosattr = origattr & ~ATTR_READONLY;
1261 dosattr |= ATTR_NORMAL;
1262 dosattr |= ATTR_HIDDEN;
1264 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
1268 goto retry_std_delete;
1271 /* undo the setattr if we errored out and it's needed */
1272 if (rc != 0 && dosattr != 0)
1273 cifs_set_file_info(inode, attrs, xid, full_path, origattr);
1277 cifs_inode = CIFS_I(inode);
1278 cifs_inode->time = 0; /* will force revalidate to get info
1280 inode->i_ctime = current_fs_time(sb);
1282 dir->i_ctime = dir->i_mtime = current_fs_time(sb);
1283 cifs_inode = CIFS_I(dir);
1284 CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
1289 cifs_put_tlink(tlink);
1294 cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
1295 const char *full_path, struct cifs_sb_info *cifs_sb,
1296 struct cifs_tcon *tcon, const unsigned int xid)
1299 struct inode *inode = NULL;
1302 rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb,
1305 rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb,
1312 * setting nlink not necessary except in cases where we failed to get it
1313 * from the server or was set bogus. Also, since this is a brand new
1314 * inode, no need to grab the i_lock before setting the i_nlink.
1316 if (inode->i_nlink < 2)
1317 set_nlink(inode, 2);
1318 mode &= ~current_umask();
1319 /* must turn on setgid bit if parent dir has it */
1320 if (parent->i_mode & S_ISGID)
1323 if (tcon->unix_ext) {
1324 struct cifs_unix_set_info_args args = {
1326 .ctime = NO_CHANGE_64,
1327 .atime = NO_CHANGE_64,
1328 .mtime = NO_CHANGE_64,
1331 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1332 args.uid = current_fsuid();
1333 if (parent->i_mode & S_ISGID)
1334 args.gid = parent->i_gid;
1336 args.gid = current_fsgid();
1338 args.uid = INVALID_UID; /* no change */
1339 args.gid = INVALID_GID; /* no change */
1341 CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
1343 cifs_sb->mnt_cifs_flags &
1344 CIFS_MOUNT_MAP_SPECIAL_CHR);
1346 struct TCP_Server_Info *server = tcon->ses->server;
1347 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1348 (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo)
1349 server->ops->mkdir_setinfo(inode, full_path, cifs_sb,
1351 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
1352 inode->i_mode = (mode | S_IFDIR);
1354 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1355 inode->i_uid = current_fsuid();
1356 if (inode->i_mode & S_ISGID)
1357 inode->i_gid = parent->i_gid;
1359 inode->i_gid = current_fsgid();
1362 d_instantiate(dentry, inode);
1367 cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode,
1368 const char *full_path, struct cifs_sb_info *cifs_sb,
1369 struct cifs_tcon *tcon, const unsigned int xid)
1373 FILE_UNIX_BASIC_INFO *info = NULL;
1374 struct inode *newinode = NULL;
1375 struct cifs_fattr fattr;
1377 info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1380 goto posix_mkdir_out;
1383 mode &= ~current_umask();
1384 rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode,
1385 NULL /* netfid */, info, &oplock, full_path,
1386 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
1387 CIFS_MOUNT_MAP_SPECIAL_CHR);
1388 if (rc == -EOPNOTSUPP)
1389 goto posix_mkdir_out;
1391 cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc);
1393 goto posix_mkdir_out;
1396 if (info->Type == cpu_to_le32(-1))
1397 /* no return info, go query for it */
1398 goto posix_mkdir_get_info;
1400 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1401 * need to set uid/gid.
1404 cifs_unix_basic_to_fattr(&fattr, info, cifs_sb);
1405 cifs_fill_uniqueid(inode->i_sb, &fattr);
1406 newinode = cifs_iget(inode->i_sb, &fattr);
1408 goto posix_mkdir_get_info;
1410 d_instantiate(dentry, newinode);
1412 #ifdef CONFIG_CIFS_DEBUG2
1413 cifs_dbg(FYI, "instantiated dentry %p %s to inode %p\n",
1414 dentry, dentry->d_name.name, newinode);
1416 if (newinode->i_nlink != 2)
1417 cifs_dbg(FYI, "unexpected number of links %d\n",
1424 posix_mkdir_get_info:
1425 rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon,
1427 goto posix_mkdir_out;
1430 int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
1434 struct cifs_sb_info *cifs_sb;
1435 struct tcon_link *tlink;
1436 struct cifs_tcon *tcon;
1437 struct TCP_Server_Info *server;
1440 cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n",
1443 cifs_sb = CIFS_SB(inode->i_sb);
1444 tlink = cifs_sb_tlink(cifs_sb);
1446 return PTR_ERR(tlink);
1447 tcon = tlink_tcon(tlink);
1451 full_path = build_path_from_dentry(direntry);
1452 if (full_path == NULL) {
1457 if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1458 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1459 rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb,
1461 if (rc != -EOPNOTSUPP)
1465 server = tcon->ses->server;
1467 if (!server->ops->mkdir) {
1472 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1473 rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb);
1475 cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc);
1480 rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon,
1484 * Force revalidate to get parent dir info when needed since cached
1485 * attributes are invalid now.
1487 CIFS_I(inode)->time = 0;
1490 cifs_put_tlink(tlink);
1494 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1498 struct cifs_sb_info *cifs_sb;
1499 struct tcon_link *tlink;
1500 struct cifs_tcon *tcon;
1501 struct TCP_Server_Info *server;
1502 char *full_path = NULL;
1503 struct cifsInodeInfo *cifsInode;
1505 cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode);
1509 full_path = build_path_from_dentry(direntry);
1510 if (full_path == NULL) {
1515 cifs_sb = CIFS_SB(inode->i_sb);
1516 tlink = cifs_sb_tlink(cifs_sb);
1517 if (IS_ERR(tlink)) {
1518 rc = PTR_ERR(tlink);
1521 tcon = tlink_tcon(tlink);
1522 server = tcon->ses->server;
1524 if (!server->ops->rmdir) {
1526 cifs_put_tlink(tlink);
1530 rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);
1531 cifs_put_tlink(tlink);
1534 spin_lock(&direntry->d_inode->i_lock);
1535 i_size_write(direntry->d_inode, 0);
1536 clear_nlink(direntry->d_inode);
1537 spin_unlock(&direntry->d_inode->i_lock);
1540 cifsInode = CIFS_I(direntry->d_inode);
1541 /* force revalidate to go get info when needed */
1542 cifsInode->time = 0;
1544 cifsInode = CIFS_I(inode);
1546 * Force revalidate to get parent dir info when needed since cached
1547 * attributes are invalid now.
1549 cifsInode->time = 0;
1551 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1552 current_fs_time(inode->i_sb);
1561 cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
1562 const char *from_path, struct dentry *to_dentry,
1563 const char *to_path)
1565 struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
1566 struct tcon_link *tlink;
1567 struct cifs_tcon *tcon;
1568 struct TCP_Server_Info *server;
1569 struct cifs_fid fid;
1570 struct cifs_open_parms oparms;
1573 tlink = cifs_sb_tlink(cifs_sb);
1575 return PTR_ERR(tlink);
1576 tcon = tlink_tcon(tlink);
1577 server = tcon->ses->server;
1579 if (!server->ops->rename)
1582 /* try path-based rename first */
1583 rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb);
1586 * Don't bother with rename by filehandle unless file is busy and
1587 * source. Note that cross directory moves do not work with
1588 * rename by filehandle to various Windows servers.
1590 if (rc == 0 || rc != -EBUSY)
1591 goto do_rename_exit;
1593 /* open-file renames don't work across directories */
1594 if (to_dentry->d_parent != from_dentry->d_parent)
1595 goto do_rename_exit;
1598 oparms.cifs_sb = cifs_sb;
1599 /* open the file to be renamed -- we need DELETE perms */
1600 oparms.desired_access = DELETE;
1601 oparms.create_options = CREATE_NOT_DIR;
1602 oparms.disposition = FILE_OPEN;
1603 oparms.path = from_path;
1605 oparms.reconnect = false;
1607 rc = CIFS_open(xid, &oparms, &oplock, NULL);
1609 rc = CIFSSMBRenameOpenFile(xid, tcon, fid.netfid,
1610 (const char *) to_dentry->d_name.name,
1611 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
1612 CIFS_MOUNT_MAP_SPECIAL_CHR);
1613 CIFSSMBClose(xid, tcon, fid.netfid);
1616 cifs_put_tlink(tlink);
1621 cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
1622 struct inode *target_dir, struct dentry *target_dentry)
1624 char *from_name = NULL;
1625 char *to_name = NULL;
1626 struct cifs_sb_info *cifs_sb;
1627 struct tcon_link *tlink;
1628 struct cifs_tcon *tcon;
1629 FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
1630 FILE_UNIX_BASIC_INFO *info_buf_target;
1634 cifs_sb = CIFS_SB(source_dir->i_sb);
1635 tlink = cifs_sb_tlink(cifs_sb);
1637 return PTR_ERR(tlink);
1638 tcon = tlink_tcon(tlink);
1643 * we already have the rename sem so we do not need to
1644 * grab it again here to protect the path integrity
1646 from_name = build_path_from_dentry(source_dentry);
1647 if (from_name == NULL) {
1649 goto cifs_rename_exit;
1652 to_name = build_path_from_dentry(target_dentry);
1653 if (to_name == NULL) {
1655 goto cifs_rename_exit;
1658 rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
1661 if (rc == -EEXIST && tcon->unix_ext) {
1663 * Are src and dst hardlinks of same inode? We can only tell
1664 * with unix extensions enabled.
1667 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
1669 if (info_buf_source == NULL) {
1671 goto cifs_rename_exit;
1674 info_buf_target = info_buf_source + 1;
1675 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name,
1678 cifs_sb->mnt_cifs_flags &
1679 CIFS_MOUNT_MAP_SPECIAL_CHR);
1683 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name,
1686 cifs_sb->mnt_cifs_flags &
1687 CIFS_MOUNT_MAP_SPECIAL_CHR);
1689 if (tmprc == 0 && (info_buf_source->UniqueId ==
1690 info_buf_target->UniqueId)) {
1691 /* same file, POSIX says that this is a noop */
1693 goto cifs_rename_exit;
1697 * else ... BB we could add the same check for Windows by
1698 * checking the UniqueId via FILE_INTERNAL_INFO
1702 /* Try unlinking the target dentry if it's not negative */
1703 if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) {
1704 tmprc = cifs_unlink(target_dir, target_dentry);
1706 goto cifs_rename_exit;
1707 rc = cifs_do_rename(xid, source_dentry, from_name,
1708 target_dentry, to_name);
1712 kfree(info_buf_source);
1716 cifs_put_tlink(tlink);
1721 cifs_inode_needs_reval(struct inode *inode)
1723 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1724 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1726 if (CIFS_CACHE_READ(cifs_i))
1729 if (!lookupCacheEnabled)
1732 if (cifs_i->time == 0)
1735 if (!time_in_range(jiffies, cifs_i->time,
1736 cifs_i->time + cifs_sb->actimeo))
1739 /* hardlinked files w/ noserverino get "special" treatment */
1740 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&
1741 S_ISREG(inode->i_mode) && inode->i_nlink != 1)
1748 * Zap the cache. Called when invalid_mapping flag is set.
1751 cifs_invalidate_mapping(struct inode *inode)
1754 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1756 cifs_i->invalid_mapping = false;
1758 if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
1759 rc = invalidate_inode_pages2(inode->i_mapping);
1761 cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
1763 cifs_i->invalid_mapping = true;
1767 cifs_fscache_reset_inode_cookie(inode);
1771 int cifs_revalidate_file_attr(struct file *filp)
1774 struct inode *inode = file_inode(filp);
1775 struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
1777 if (!cifs_inode_needs_reval(inode))
1780 if (tlink_tcon(cfile->tlink)->unix_ext)
1781 rc = cifs_get_file_info_unix(filp);
1783 rc = cifs_get_file_info(filp);
1788 int cifs_revalidate_dentry_attr(struct dentry *dentry)
1792 struct inode *inode = dentry->d_inode;
1793 struct super_block *sb = dentry->d_sb;
1794 char *full_path = NULL;
1799 if (!cifs_inode_needs_reval(inode))
1804 /* can not safely grab the rename sem here if rename calls revalidate
1805 since that would deadlock */
1806 full_path = build_path_from_dentry(dentry);
1807 if (full_path == NULL) {
1812 cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n",
1813 full_path, inode, inode->i_count.counter,
1814 dentry, dentry->d_time, jiffies);
1816 if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
1817 rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
1819 rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
1828 int cifs_revalidate_file(struct file *filp)
1831 struct inode *inode = file_inode(filp);
1833 rc = cifs_revalidate_file_attr(filp);
1837 if (CIFS_I(inode)->invalid_mapping)
1838 rc = cifs_invalidate_mapping(inode);
1842 /* revalidate a dentry's inode attributes */
1843 int cifs_revalidate_dentry(struct dentry *dentry)
1846 struct inode *inode = dentry->d_inode;
1848 rc = cifs_revalidate_dentry_attr(dentry);
1852 if (CIFS_I(inode)->invalid_mapping)
1853 rc = cifs_invalidate_mapping(inode);
1857 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1860 struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
1861 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
1862 struct inode *inode = dentry->d_inode;
1866 * We need to be sure that all dirty pages are written and the server
1867 * has actual ctime, mtime and file length.
1869 if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
1870 inode->i_mapping->nrpages != 0) {
1871 rc = filemap_fdatawait(inode->i_mapping);
1873 mapping_set_error(inode->i_mapping, rc);
1878 rc = cifs_revalidate_dentry_attr(dentry);
1882 generic_fillattr(inode, stat);
1883 stat->blksize = CIFS_MAX_MSGSIZE;
1884 stat->ino = CIFS_I(inode)->uniqueid;
1887 * If on a multiuser mount without unix extensions or cifsacl being
1888 * enabled, and the admin hasn't overridden them, set the ownership
1889 * to the fsuid/fsgid of the current process.
1891 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
1892 !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1894 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
1895 stat->uid = current_fsuid();
1896 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
1897 stat->gid = current_fsgid();
1902 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1904 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1905 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1909 page = grab_cache_page(mapping, index);
1913 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1915 page_cache_release(page);
1919 static void cifs_setsize(struct inode *inode, loff_t offset)
1921 spin_lock(&inode->i_lock);
1922 i_size_write(inode, offset);
1923 spin_unlock(&inode->i_lock);
1925 truncate_pagecache(inode, offset);
1929 cifs_set_file_size(struct inode *inode, struct iattr *attrs,
1930 unsigned int xid, char *full_path)
1933 struct cifsFileInfo *open_file;
1934 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1935 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1936 struct tcon_link *tlink = NULL;
1937 struct cifs_tcon *tcon = NULL;
1938 struct TCP_Server_Info *server;
1939 struct cifs_io_parms io_parms;
1942 * To avoid spurious oplock breaks from server, in the case of
1943 * inodes that we already have open, avoid doing path based
1944 * setting of file size if we can do it by handle.
1945 * This keeps our caching token (oplock) and avoids timeouts
1946 * when the local oplock break takes longer to flush
1947 * writebehind data than the SMB timeout for the SetPathInfo
1948 * request would allow
1950 open_file = find_writable_file(cifsInode, true);
1952 tcon = tlink_tcon(open_file->tlink);
1953 server = tcon->ses->server;
1954 if (server->ops->set_file_size)
1955 rc = server->ops->set_file_size(xid, tcon, open_file,
1956 attrs->ia_size, false);
1959 cifsFileInfo_put(open_file);
1960 cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc);
1961 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1962 unsigned int bytes_written;
1964 io_parms.netfid = open_file->fid.netfid;
1965 io_parms.pid = open_file->pid;
1966 io_parms.tcon = tcon;
1967 io_parms.offset = 0;
1968 io_parms.length = attrs->ia_size;
1969 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
1971 cifs_dbg(FYI, "Wrt seteof rc %d\n", rc);
1980 tlink = cifs_sb_tlink(cifs_sb);
1982 return PTR_ERR(tlink);
1983 tcon = tlink_tcon(tlink);
1984 server = tcon->ses->server;
1988 * Set file size by pathname rather than by handle either because no
1989 * valid, writeable file handle for it was found or because there was
1990 * an error setting it by handle.
1992 if (server->ops->set_path_size)
1993 rc = server->ops->set_path_size(xid, tcon, full_path,
1994 attrs->ia_size, cifs_sb, false);
1997 cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc);
1998 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
2002 rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN,
2003 GENERIC_WRITE, CREATE_NOT_DIR, &netfid,
2004 &oplock, NULL, cifs_sb->local_nls,
2005 cifs_sb->mnt_cifs_flags &
2006 CIFS_MOUNT_MAP_SPECIAL_CHR);
2008 unsigned int bytes_written;
2010 io_parms.netfid = netfid;
2011 io_parms.pid = current->tgid;
2012 io_parms.tcon = tcon;
2013 io_parms.offset = 0;
2014 io_parms.length = attrs->ia_size;
2015 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL,
2017 cifs_dbg(FYI, "wrt seteof rc %d\n", rc);
2018 CIFSSMBClose(xid, tcon, netfid);
2022 cifs_put_tlink(tlink);
2026 cifsInode->server_eof = attrs->ia_size;
2027 cifs_setsize(inode, attrs->ia_size);
2028 cifs_truncate_page(inode->i_mapping, inode->i_size);
2035 cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
2039 char *full_path = NULL;
2040 struct inode *inode = direntry->d_inode;
2041 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2042 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2043 struct tcon_link *tlink;
2044 struct cifs_tcon *pTcon;
2045 struct cifs_unix_set_info_args *args = NULL;
2046 struct cifsFileInfo *open_file;
2048 cifs_dbg(FYI, "setattr_unix on file %s attrs->ia_valid=0x%x\n",
2049 direntry->d_name.name, attrs->ia_valid);
2053 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2054 attrs->ia_valid |= ATTR_FORCE;
2056 rc = inode_change_ok(inode, attrs);
2060 full_path = build_path_from_dentry(direntry);
2061 if (full_path == NULL) {
2067 * Attempt to flush data before changing attributes. We need to do
2068 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2069 * ownership or mode then we may also need to do this. Here, we take
2070 * the safe way out and just do the flush on all setattr requests. If
2071 * the flush returns error, store it to report later and continue.
2073 * BB: This should be smarter. Why bother flushing pages that
2074 * will be truncated anyway? Also, should we error out here if
2075 * the flush returns error?
2077 rc = filemap_write_and_wait(inode->i_mapping);
2078 mapping_set_error(inode->i_mapping, rc);
2081 if (attrs->ia_valid & ATTR_SIZE) {
2082 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2087 /* skip mode change if it's just for clearing setuid/setgid */
2088 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2089 attrs->ia_valid &= ~ATTR_MODE;
2091 args = kmalloc(sizeof(*args), GFP_KERNEL);
2097 /* set up the struct */
2098 if (attrs->ia_valid & ATTR_MODE)
2099 args->mode = attrs->ia_mode;
2101 args->mode = NO_CHANGE_64;
2103 if (attrs->ia_valid & ATTR_UID)
2104 args->uid = attrs->ia_uid;
2106 args->uid = INVALID_UID; /* no change */
2108 if (attrs->ia_valid & ATTR_GID)
2109 args->gid = attrs->ia_gid;
2111 args->gid = INVALID_GID; /* no change */
2113 if (attrs->ia_valid & ATTR_ATIME)
2114 args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
2116 args->atime = NO_CHANGE_64;
2118 if (attrs->ia_valid & ATTR_MTIME)
2119 args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
2121 args->mtime = NO_CHANGE_64;
2123 if (attrs->ia_valid & ATTR_CTIME)
2124 args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
2126 args->ctime = NO_CHANGE_64;
2129 open_file = find_writable_file(cifsInode, true);
2131 u16 nfid = open_file->fid.netfid;
2132 u32 npid = open_file->pid;
2133 pTcon = tlink_tcon(open_file->tlink);
2134 rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
2135 cifsFileInfo_put(open_file);
2137 tlink = cifs_sb_tlink(cifs_sb);
2138 if (IS_ERR(tlink)) {
2139 rc = PTR_ERR(tlink);
2142 pTcon = tlink_tcon(tlink);
2143 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
2145 cifs_sb->mnt_cifs_flags &
2146 CIFS_MOUNT_MAP_SPECIAL_CHR);
2147 cifs_put_tlink(tlink);
2153 if ((attrs->ia_valid & ATTR_SIZE) &&
2154 attrs->ia_size != i_size_read(inode))
2155 truncate_setsize(inode, attrs->ia_size);
2157 setattr_copy(inode, attrs);
2158 mark_inode_dirty(inode);
2160 /* force revalidate when any of these times are set since some
2161 of the fs types (eg ext3, fat) do not have fine enough
2162 time granularity to match protocol, and we do not have a
2163 a way (yet) to query the server fs's time granularity (and
2164 whether it rounds times down).
2166 if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2167 cifsInode->time = 0;
2176 cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
2179 kuid_t uid = INVALID_UID;
2180 kgid_t gid = INVALID_GID;
2181 struct inode *inode = direntry->d_inode;
2182 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2183 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2184 char *full_path = NULL;
2187 __u64 mode = NO_CHANGE_64;
2191 cifs_dbg(FYI, "setattr on file %s attrs->iavalid 0x%x\n",
2192 direntry->d_name.name, attrs->ia_valid);
2194 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2195 attrs->ia_valid |= ATTR_FORCE;
2197 rc = inode_change_ok(inode, attrs);
2203 full_path = build_path_from_dentry(direntry);
2204 if (full_path == NULL) {
2211 * Attempt to flush data before changing attributes. We need to do
2212 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2213 * ownership or mode then we may also need to do this. Here, we take
2214 * the safe way out and just do the flush on all setattr requests. If
2215 * the flush returns error, store it to report later and continue.
2217 * BB: This should be smarter. Why bother flushing pages that
2218 * will be truncated anyway? Also, should we error out here if
2219 * the flush returns error?
2221 rc = filemap_write_and_wait(inode->i_mapping);
2222 mapping_set_error(inode->i_mapping, rc);
2225 if (attrs->ia_valid & ATTR_SIZE) {
2226 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2228 goto cifs_setattr_exit;
2231 if (attrs->ia_valid & ATTR_UID)
2232 uid = attrs->ia_uid;
2234 if (attrs->ia_valid & ATTR_GID)
2235 gid = attrs->ia_gid;
2237 #ifdef CONFIG_CIFS_ACL
2238 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2239 if (uid_valid(uid) || gid_valid(gid)) {
2240 rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
2243 cifs_dbg(FYI, "%s: Setting id failed with error: %d\n",
2245 goto cifs_setattr_exit;
2249 #endif /* CONFIG_CIFS_ACL */
2250 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
2251 attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
2253 /* skip mode change if it's just for clearing setuid/setgid */
2254 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2255 attrs->ia_valid &= ~ATTR_MODE;
2257 if (attrs->ia_valid & ATTR_MODE) {
2258 mode = attrs->ia_mode;
2260 #ifdef CONFIG_CIFS_ACL
2261 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2262 rc = id_mode_to_cifs_acl(inode, full_path, mode,
2263 INVALID_UID, INVALID_GID);
2265 cifs_dbg(FYI, "%s: Setting ACL failed with error: %d\n",
2267 goto cifs_setattr_exit;
2270 #endif /* CONFIG_CIFS_ACL */
2271 if (((mode & S_IWUGO) == 0) &&
2272 (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
2274 dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
2276 /* fix up mode if we're not using dynperm */
2277 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
2278 attrs->ia_mode = inode->i_mode & ~S_IWUGO;
2279 } else if ((mode & S_IWUGO) &&
2280 (cifsInode->cifsAttrs & ATTR_READONLY)) {
2282 dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
2283 /* Attributes of 0 are ignored */
2285 dosattr |= ATTR_NORMAL;
2287 /* reset local inode permissions to normal */
2288 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2289 attrs->ia_mode &= ~(S_IALLUGO);
2290 if (S_ISDIR(inode->i_mode))
2292 cifs_sb->mnt_dir_mode;
2295 cifs_sb->mnt_file_mode;
2297 } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2298 /* ignore mode change - ATTR_READONLY hasn't changed */
2299 attrs->ia_valid &= ~ATTR_MODE;
2303 if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
2304 ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
2305 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
2306 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2308 /* Even if error on time set, no sense failing the call if
2309 the server would set the time to a reasonable value anyway,
2310 and this check ensures that we are not being called from
2311 sys_utimes in which case we ought to fail the call back to
2312 the user when the server rejects the call */
2313 if ((rc) && (attrs->ia_valid &
2314 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
2318 /* do not need local check to inode_check_ok since the server does
2321 goto cifs_setattr_exit;
2323 if ((attrs->ia_valid & ATTR_SIZE) &&
2324 attrs->ia_size != i_size_read(inode))
2325 truncate_setsize(inode, attrs->ia_size);
2327 setattr_copy(inode, attrs);
2328 mark_inode_dirty(inode);
2337 cifs_setattr(struct dentry *direntry, struct iattr *attrs)
2339 struct inode *inode = direntry->d_inode;
2340 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2341 struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
2343 if (pTcon->unix_ext)
2344 return cifs_setattr_unix(direntry, attrs);
2346 return cifs_setattr_nounix(direntry, attrs);
2348 /* BB: add cifs_setattr_legacy for really old servers */
2352 void cifs_delete_inode(struct inode *inode)
2354 cifs_dbg(FYI, "In cifs_delete_inode, inode = 0x%p\n", inode);
2355 /* may have to add back in if and when safe distributed caching of
2356 directories added e.g. via FindNotify */