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 cFYI(1, "%s: revalidating inode %llu", __func__
, cifs_i
->uniqueid
);
96 if (inode
->i_state
& I_NEW
) {
97 cFYI(1, "%s: inode %llu is new", __func__
, cifs_i
->uniqueid
);
101 /* don't bother with revalidation if we have an oplock */
102 if (cifs_i
->clientCanCacheRead
) {
103 cFYI(1, "%s: inode %llu is oplocked", __func__
,
108 /* revalidate if mtime or size have changed */
109 if (timespec_equal(&inode
->i_mtime
, &fattr
->cf_mtime
) &&
110 cifs_i
->server_eof
== fattr
->cf_eof
) {
111 cFYI(1, "%s: inode %llu is unchanged", __func__
,
116 cFYI(1, "%s: invalidating inode %llu mapping", __func__
,
118 cifs_i
->invalid_mapping
= true;
121 /* populate an inode with info from a cifs_fattr struct */
123 cifs_fattr_to_inode(struct inode
*inode
, struct cifs_fattr
*fattr
)
125 struct cifsInodeInfo
*cifs_i
= CIFS_I(inode
);
126 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
128 cifs_revalidate_cache(inode
, fattr
);
130 spin_lock(&inode
->i_lock
);
131 inode
->i_atime
= fattr
->cf_atime
;
132 inode
->i_mtime
= fattr
->cf_mtime
;
133 inode
->i_ctime
= fattr
->cf_ctime
;
134 inode
->i_rdev
= fattr
->cf_rdev
;
135 set_nlink(inode
, fattr
->cf_nlink
);
136 inode
->i_uid
= fattr
->cf_uid
;
137 inode
->i_gid
= fattr
->cf_gid
;
139 /* if dynperm is set, don't clobber existing mode */
140 if (inode
->i_state
& I_NEW
||
141 !(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
))
142 inode
->i_mode
= fattr
->cf_mode
;
144 cifs_i
->cifsAttrs
= fattr
->cf_cifsattrs
;
146 if (fattr
->cf_flags
& CIFS_FATTR_NEED_REVAL
)
149 cifs_i
->time
= jiffies
;
151 cifs_i
->delete_pending
= fattr
->cf_flags
& CIFS_FATTR_DELETE_PENDING
;
153 cifs_i
->server_eof
= fattr
->cf_eof
;
155 * Can't safely change the file size here if the client is writing to
156 * it due to potential races.
158 if (is_size_safe_to_change(cifs_i
, fattr
->cf_eof
)) {
159 i_size_write(inode
, fattr
->cf_eof
);
162 * i_blocks is not related to (i_size / i_blksize),
163 * but instead 512 byte (2**9) size is required for
164 * calculating num blocks.
166 inode
->i_blocks
= (512 - 1 + fattr
->cf_bytes
) >> 9;
168 spin_unlock(&inode
->i_lock
);
170 if (fattr
->cf_flags
& CIFS_FATTR_DFS_REFERRAL
)
171 inode
->i_flags
|= S_AUTOMOUNT
;
176 cifs_fill_uniqueid(struct super_block
*sb
, struct cifs_fattr
*fattr
)
178 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
180 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
)
183 fattr
->cf_uniqueid
= iunique(sb
, ROOT_I
);
186 /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */
188 cifs_unix_basic_to_fattr(struct cifs_fattr
*fattr
, FILE_UNIX_BASIC_INFO
*info
,
189 struct cifs_sb_info
*cifs_sb
)
191 memset(fattr
, 0, sizeof(*fattr
));
192 fattr
->cf_uniqueid
= le64_to_cpu(info
->UniqueId
);
193 fattr
->cf_bytes
= le64_to_cpu(info
->NumOfBytes
);
194 fattr
->cf_eof
= le64_to_cpu(info
->EndOfFile
);
196 fattr
->cf_atime
= cifs_NTtimeToUnix(info
->LastAccessTime
);
197 fattr
->cf_mtime
= cifs_NTtimeToUnix(info
->LastModificationTime
);
198 fattr
->cf_ctime
= cifs_NTtimeToUnix(info
->LastStatusChange
);
199 fattr
->cf_mode
= le64_to_cpu(info
->Permissions
);
202 * Since we set the inode type below we need to mask off
203 * to avoid strange results if bits set above.
205 fattr
->cf_mode
&= ~S_IFMT
;
206 switch (le32_to_cpu(info
->Type
)) {
208 fattr
->cf_mode
|= S_IFREG
;
209 fattr
->cf_dtype
= DT_REG
;
212 fattr
->cf_mode
|= S_IFLNK
;
213 fattr
->cf_dtype
= DT_LNK
;
216 fattr
->cf_mode
|= S_IFDIR
;
217 fattr
->cf_dtype
= DT_DIR
;
220 fattr
->cf_mode
|= S_IFCHR
;
221 fattr
->cf_dtype
= DT_CHR
;
222 fattr
->cf_rdev
= MKDEV(le64_to_cpu(info
->DevMajor
),
223 le64_to_cpu(info
->DevMinor
) & MINORMASK
);
226 fattr
->cf_mode
|= S_IFBLK
;
227 fattr
->cf_dtype
= DT_BLK
;
228 fattr
->cf_rdev
= MKDEV(le64_to_cpu(info
->DevMajor
),
229 le64_to_cpu(info
->DevMinor
) & MINORMASK
);
232 fattr
->cf_mode
|= S_IFIFO
;
233 fattr
->cf_dtype
= DT_FIFO
;
236 fattr
->cf_mode
|= S_IFSOCK
;
237 fattr
->cf_dtype
= DT_SOCK
;
240 /* safest to call it a file if we do not know */
241 fattr
->cf_mode
|= S_IFREG
;
242 fattr
->cf_dtype
= DT_REG
;
243 cFYI(1, "unknown type %d", le32_to_cpu(info
->Type
));
247 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_UID
)
248 fattr
->cf_uid
= cifs_sb
->mnt_uid
;
250 fattr
->cf_uid
= le64_to_cpu(info
->Uid
);
252 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_GID
)
253 fattr
->cf_gid
= cifs_sb
->mnt_gid
;
255 fattr
->cf_gid
= le64_to_cpu(info
->Gid
);
257 fattr
->cf_nlink
= le64_to_cpu(info
->Nlinks
);
261 * Fill a cifs_fattr struct with fake inode info.
263 * Needed to setup cifs_fattr data for the directory which is the
264 * junction to the new submount (ie to setup the fake directory
265 * which represents a DFS referral).
268 cifs_create_dfs_fattr(struct cifs_fattr
*fattr
, struct super_block
*sb
)
270 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
272 cFYI(1, "creating fake fattr for DFS referral");
274 memset(fattr
, 0, sizeof(*fattr
));
275 fattr
->cf_mode
= S_IFDIR
| S_IXUGO
| S_IRWXU
;
276 fattr
->cf_uid
= cifs_sb
->mnt_uid
;
277 fattr
->cf_gid
= cifs_sb
->mnt_gid
;
278 fattr
->cf_atime
= CURRENT_TIME
;
279 fattr
->cf_ctime
= CURRENT_TIME
;
280 fattr
->cf_mtime
= CURRENT_TIME
;
282 fattr
->cf_flags
|= CIFS_FATTR_DFS_REFERRAL
;
285 int cifs_get_file_info_unix(struct file
*filp
)
289 FILE_UNIX_BASIC_INFO find_data
;
290 struct cifs_fattr fattr
;
291 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
292 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
293 struct cifsFileInfo
*cfile
= filp
->private_data
;
294 struct cifs_tcon
*tcon
= tlink_tcon(cfile
->tlink
);
297 rc
= CIFSSMBUnixQFileInfo(xid
, tcon
, cfile
->netfid
, &find_data
);
299 cifs_unix_basic_to_fattr(&fattr
, &find_data
, cifs_sb
);
300 } else if (rc
== -EREMOTE
) {
301 cifs_create_dfs_fattr(&fattr
, inode
->i_sb
);
305 cifs_fattr_to_inode(inode
, &fattr
);
310 int cifs_get_inode_info_unix(struct inode
**pinode
,
311 const unsigned char *full_path
,
312 struct super_block
*sb
, unsigned int xid
)
315 FILE_UNIX_BASIC_INFO find_data
;
316 struct cifs_fattr fattr
;
317 struct cifs_tcon
*tcon
;
318 struct tcon_link
*tlink
;
319 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
321 cFYI(1, "Getting info on %s", full_path
);
323 tlink
= cifs_sb_tlink(cifs_sb
);
325 return PTR_ERR(tlink
);
326 tcon
= tlink_tcon(tlink
);
328 /* could have done a find first instead but this returns more info */
329 rc
= CIFSSMBUnixQPathInfo(xid
, tcon
, full_path
, &find_data
,
330 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
331 CIFS_MOUNT_MAP_SPECIAL_CHR
);
332 cifs_put_tlink(tlink
);
335 cifs_unix_basic_to_fattr(&fattr
, &find_data
, cifs_sb
);
336 } else if (rc
== -EREMOTE
) {
337 cifs_create_dfs_fattr(&fattr
, sb
);
343 /* check for Minshall+French symlinks */
344 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MF_SYMLINKS
) {
345 int tmprc
= CIFSCheckMFSymlink(&fattr
, full_path
, cifs_sb
, xid
);
347 cFYI(1, "CIFSCheckMFSymlink: %d", tmprc
);
350 if (*pinode
== NULL
) {
352 cifs_fill_uniqueid(sb
, &fattr
);
353 *pinode
= cifs_iget(sb
, &fattr
);
357 /* we already have inode, update it */
358 cifs_fattr_to_inode(*pinode
, &fattr
);
365 cifs_sfu_type(struct cifs_fattr
*fattr
, const unsigned char *path
,
366 struct cifs_sb_info
*cifs_sb
, unsigned int xid
)
371 struct tcon_link
*tlink
;
372 struct cifs_tcon
*tcon
;
373 struct cifs_io_parms io_parms
;
375 unsigned int bytes_read
;
380 fattr
->cf_mode
&= ~S_IFMT
;
382 if (fattr
->cf_eof
== 0) {
383 fattr
->cf_mode
|= S_IFIFO
;
384 fattr
->cf_dtype
= DT_FIFO
;
386 } else if (fattr
->cf_eof
< 8) {
387 fattr
->cf_mode
|= S_IFREG
;
388 fattr
->cf_dtype
= DT_REG
;
389 return -EINVAL
; /* EOPNOTSUPP? */
392 tlink
= cifs_sb_tlink(cifs_sb
);
394 return PTR_ERR(tlink
);
395 tcon
= tlink_tcon(tlink
);
397 rc
= CIFSSMBOpen(xid
, tcon
, path
, FILE_OPEN
, GENERIC_READ
,
398 CREATE_NOT_DIR
, &netfid
, &oplock
, NULL
,
400 cifs_sb
->mnt_cifs_flags
&
401 CIFS_MOUNT_MAP_SPECIAL_CHR
);
403 int buf_type
= CIFS_NO_BUFFER
;
405 io_parms
.netfid
= netfid
;
406 io_parms
.pid
= current
->tgid
;
407 io_parms
.tcon
= tcon
;
409 io_parms
.length
= 24;
410 rc
= CIFSSMBRead(xid
, &io_parms
, &bytes_read
, &pbuf
,
412 if ((rc
== 0) && (bytes_read
>= 8)) {
413 if (memcmp("IntxBLK", pbuf
, 8) == 0) {
414 cFYI(1, "Block device");
415 fattr
->cf_mode
|= S_IFBLK
;
416 fattr
->cf_dtype
= DT_BLK
;
417 if (bytes_read
== 24) {
418 /* we have enough to decode dev num */
419 __u64 mjr
; /* major */
420 __u64 mnr
; /* minor */
421 mjr
= le64_to_cpu(*(__le64
*)(pbuf
+8));
422 mnr
= le64_to_cpu(*(__le64
*)(pbuf
+16));
423 fattr
->cf_rdev
= MKDEV(mjr
, mnr
);
425 } else if (memcmp("IntxCHR", pbuf
, 8) == 0) {
426 cFYI(1, "Char device");
427 fattr
->cf_mode
|= S_IFCHR
;
428 fattr
->cf_dtype
= DT_CHR
;
429 if (bytes_read
== 24) {
430 /* we have enough to decode dev num */
431 __u64 mjr
; /* major */
432 __u64 mnr
; /* minor */
433 mjr
= le64_to_cpu(*(__le64
*)(pbuf
+8));
434 mnr
= le64_to_cpu(*(__le64
*)(pbuf
+16));
435 fattr
->cf_rdev
= MKDEV(mjr
, mnr
);
437 } else if (memcmp("IntxLNK", pbuf
, 7) == 0) {
439 fattr
->cf_mode
|= S_IFLNK
;
440 fattr
->cf_dtype
= DT_LNK
;
442 fattr
->cf_mode
|= S_IFREG
; /* file? */
443 fattr
->cf_dtype
= DT_REG
;
447 fattr
->cf_mode
|= S_IFREG
; /* then it is a file */
448 fattr
->cf_dtype
= DT_REG
;
449 rc
= -EOPNOTSUPP
; /* or some unknown SFU type */
451 CIFSSMBClose(xid
, tcon
, netfid
);
453 cifs_put_tlink(tlink
);
457 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
460 * Fetch mode bits as provided by SFU.
462 * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ?
464 static int cifs_sfu_mode(struct cifs_fattr
*fattr
, const unsigned char *path
,
465 struct cifs_sb_info
*cifs_sb
, unsigned int xid
)
467 #ifdef CONFIG_CIFS_XATTR
471 struct tcon_link
*tlink
;
472 struct cifs_tcon
*tcon
;
474 tlink
= cifs_sb_tlink(cifs_sb
);
476 return PTR_ERR(tlink
);
477 tcon
= tlink_tcon(tlink
);
479 rc
= CIFSSMBQAllEAs(xid
, tcon
, path
, "SETFILEBITS",
480 ea_value
, 4 /* size of buf */, cifs_sb
->local_nls
,
481 cifs_sb
->mnt_cifs_flags
&
482 CIFS_MOUNT_MAP_SPECIAL_CHR
);
483 cifs_put_tlink(tlink
);
487 mode
= le32_to_cpu(*((__le32
*)ea_value
));
488 fattr
->cf_mode
&= ~SFBITS_MASK
;
489 cFYI(1, "special bits 0%o org mode 0%o", mode
,
491 fattr
->cf_mode
= (mode
& SFBITS_MASK
) | fattr
->cf_mode
;
492 cFYI(1, "special mode bits 0%o", mode
);
501 /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
503 cifs_all_info_to_fattr(struct cifs_fattr
*fattr
, FILE_ALL_INFO
*info
,
504 struct cifs_sb_info
*cifs_sb
, bool adjust_tz
)
506 struct cifs_tcon
*tcon
= cifs_sb_master_tcon(cifs_sb
);
508 memset(fattr
, 0, sizeof(*fattr
));
509 fattr
->cf_cifsattrs
= le32_to_cpu(info
->Attributes
);
510 if (info
->DeletePending
)
511 fattr
->cf_flags
|= CIFS_FATTR_DELETE_PENDING
;
513 if (info
->LastAccessTime
)
514 fattr
->cf_atime
= cifs_NTtimeToUnix(info
->LastAccessTime
);
516 fattr
->cf_atime
= CURRENT_TIME
;
518 fattr
->cf_ctime
= cifs_NTtimeToUnix(info
->ChangeTime
);
519 fattr
->cf_mtime
= cifs_NTtimeToUnix(info
->LastWriteTime
);
522 fattr
->cf_ctime
.tv_sec
+= tcon
->ses
->server
->timeAdj
;
523 fattr
->cf_mtime
.tv_sec
+= tcon
->ses
->server
->timeAdj
;
526 fattr
->cf_eof
= le64_to_cpu(info
->EndOfFile
);
527 fattr
->cf_bytes
= le64_to_cpu(info
->AllocationSize
);
528 fattr
->cf_createtime
= le64_to_cpu(info
->CreationTime
);
530 if (fattr
->cf_cifsattrs
& ATTR_DIRECTORY
) {
531 fattr
->cf_mode
= S_IFDIR
| cifs_sb
->mnt_dir_mode
;
532 fattr
->cf_dtype
= DT_DIR
;
534 * Server can return wrong NumberOfLinks value for directories
535 * when Unix extensions are disabled - fake it.
539 fattr
->cf_mode
= S_IFREG
| cifs_sb
->mnt_file_mode
;
540 fattr
->cf_dtype
= DT_REG
;
542 /* clear write bits if ATTR_READONLY is set */
543 if (fattr
->cf_cifsattrs
& ATTR_READONLY
)
544 fattr
->cf_mode
&= ~(S_IWUGO
);
546 fattr
->cf_nlink
= le32_to_cpu(info
->NumberOfLinks
);
549 fattr
->cf_uid
= cifs_sb
->mnt_uid
;
550 fattr
->cf_gid
= cifs_sb
->mnt_gid
;
553 int cifs_get_file_info(struct file
*filp
)
557 FILE_ALL_INFO find_data
;
558 struct cifs_fattr fattr
;
559 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
560 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
561 struct cifsFileInfo
*cfile
= filp
->private_data
;
562 struct cifs_tcon
*tcon
= tlink_tcon(cfile
->tlink
);
565 rc
= CIFSSMBQFileInfo(xid
, tcon
, cfile
->netfid
, &find_data
);
568 cifs_all_info_to_fattr(&fattr
, &find_data
, cifs_sb
, false);
571 cifs_create_dfs_fattr(&fattr
, inode
->i_sb
);
577 * FIXME: legacy server -- fall back to path-based call?
578 * for now, just skip revalidating and mark inode for
582 CIFS_I(inode
)->time
= 0;
588 * don't bother with SFU junk here -- just mark inode as needing
591 fattr
.cf_uniqueid
= CIFS_I(inode
)->uniqueid
;
592 fattr
.cf_flags
|= CIFS_FATTR_NEED_REVAL
;
593 cifs_fattr_to_inode(inode
, &fattr
);
600 cifs_get_inode_info(struct inode
**inode
, const char *full_path
,
601 FILE_ALL_INFO
*data
, struct super_block
*sb
, int xid
,
605 struct cifs_tcon
*tcon
;
606 struct TCP_Server_Info
*server
;
607 struct tcon_link
*tlink
;
608 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
610 bool adjust_tz
= false;
611 struct cifs_fattr fattr
;
613 tlink
= cifs_sb_tlink(cifs_sb
);
615 return PTR_ERR(tlink
);
616 tcon
= tlink_tcon(tlink
);
617 server
= tcon
->ses
->server
;
619 cFYI(1, "Getting info on %s", full_path
);
621 if ((data
== NULL
) && (*inode
!= NULL
)) {
622 if (CIFS_I(*inode
)->clientCanCacheRead
) {
623 cFYI(1, "No need to revalidate cached inode sizes");
628 /* if inode info is not passed, get it from server */
630 if (!server
->ops
->query_path_info
) {
634 buf
= kmalloc(sizeof(FILE_ALL_INFO
), GFP_KERNEL
);
639 data
= (FILE_ALL_INFO
*)buf
;
640 rc
= server
->ops
->query_path_info(xid
, tcon
, cifs_sb
, full_path
,
645 cifs_all_info_to_fattr(&fattr
, (FILE_ALL_INFO
*)data
, cifs_sb
,
647 } else if (rc
== -EREMOTE
) {
648 cifs_create_dfs_fattr(&fattr
, sb
);
655 * If an inode wasn't passed in, then get the inode number
657 * Is an i_ino of zero legal? Can we use that to check if the server
658 * supports returning inode numbers? Are there other sanity checks we
659 * can use to ensure that the server is really filling in that field?
661 if (*inode
== NULL
) {
662 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
) {
663 if (server
->ops
->get_srv_inum
)
664 tmprc
= server
->ops
->get_srv_inum(xid
, tcon
,
665 cifs_sb
, full_path
, &fattr
.cf_uniqueid
,
669 if (tmprc
|| !fattr
.cf_uniqueid
) {
670 cFYI(1, "GetSrvInodeNum rc %d", tmprc
);
671 fattr
.cf_uniqueid
= iunique(sb
, ROOT_I
);
672 cifs_autodisable_serverino(cifs_sb
);
675 fattr
.cf_uniqueid
= iunique(sb
, ROOT_I
);
678 fattr
.cf_uniqueid
= CIFS_I(*inode
)->uniqueid
;
681 /* query for SFU type info if supported and needed */
682 if (fattr
.cf_cifsattrs
& ATTR_SYSTEM
&&
683 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
) {
684 tmprc
= cifs_sfu_type(&fattr
, full_path
, cifs_sb
, xid
);
686 cFYI(1, "cifs_sfu_type failed: %d", tmprc
);
689 #ifdef CONFIG_CIFS_ACL
690 /* fill in 0777 bits from ACL */
691 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) {
692 rc
= cifs_acl_to_fattr(cifs_sb
, &fattr
, *inode
, full_path
, fid
);
694 cFYI(1, "%s: Getting ACL failed with error: %d",
699 #endif /* CONFIG_CIFS_ACL */
701 /* fill in remaining high mode bits e.g. SUID, VTX */
702 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
)
703 cifs_sfu_mode(&fattr
, full_path
, cifs_sb
, xid
);
705 /* check for Minshall+French symlinks */
706 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MF_SYMLINKS
) {
707 tmprc
= CIFSCheckMFSymlink(&fattr
, full_path
, cifs_sb
, xid
);
709 cFYI(1, "CIFSCheckMFSymlink: %d", tmprc
);
713 *inode
= cifs_iget(sb
, &fattr
);
717 cifs_fattr_to_inode(*inode
, &fattr
);
722 cifs_put_tlink(tlink
);
726 static const struct inode_operations cifs_ipc_inode_ops
= {
727 .lookup
= cifs_lookup
,
731 cifs_find_inode(struct inode
*inode
, void *opaque
)
733 struct cifs_fattr
*fattr
= (struct cifs_fattr
*) opaque
;
735 /* don't match inode with different uniqueid */
736 if (CIFS_I(inode
)->uniqueid
!= fattr
->cf_uniqueid
)
739 /* use createtime like an i_generation field */
740 if (CIFS_I(inode
)->createtime
!= fattr
->cf_createtime
)
743 /* don't match inode of different type */
744 if ((inode
->i_mode
& S_IFMT
) != (fattr
->cf_mode
& S_IFMT
))
747 /* if it's not a directory or has no dentries, then flag it */
748 if (S_ISDIR(inode
->i_mode
) && !hlist_empty(&inode
->i_dentry
))
749 fattr
->cf_flags
|= CIFS_FATTR_INO_COLLISION
;
755 cifs_init_inode(struct inode
*inode
, void *opaque
)
757 struct cifs_fattr
*fattr
= (struct cifs_fattr
*) opaque
;
759 CIFS_I(inode
)->uniqueid
= fattr
->cf_uniqueid
;
760 CIFS_I(inode
)->createtime
= fattr
->cf_createtime
;
765 * walk dentry list for an inode and report whether it has aliases that
766 * are hashed. We use this to determine if a directory inode can actually
770 inode_has_hashed_dentries(struct inode
*inode
)
772 struct dentry
*dentry
;
773 struct hlist_node
*p
;
775 spin_lock(&inode
->i_lock
);
776 hlist_for_each_entry(dentry
, p
, &inode
->i_dentry
, d_alias
) {
777 if (!d_unhashed(dentry
) || IS_ROOT(dentry
)) {
778 spin_unlock(&inode
->i_lock
);
782 spin_unlock(&inode
->i_lock
);
786 /* Given fattrs, get a corresponding inode */
788 cifs_iget(struct super_block
*sb
, struct cifs_fattr
*fattr
)
794 cFYI(1, "looking for uniqueid=%llu", fattr
->cf_uniqueid
);
796 /* hash down to 32-bits on 32-bit arch */
797 hash
= cifs_uniqueid_to_ino_t(fattr
->cf_uniqueid
);
799 inode
= iget5_locked(sb
, hash
, cifs_find_inode
, cifs_init_inode
, fattr
);
801 /* was there a potentially problematic inode collision? */
802 if (fattr
->cf_flags
& CIFS_FATTR_INO_COLLISION
) {
803 fattr
->cf_flags
&= ~CIFS_FATTR_INO_COLLISION
;
805 if (inode_has_hashed_dentries(inode
)) {
806 cifs_autodisable_serverino(CIFS_SB(sb
));
808 fattr
->cf_uniqueid
= iunique(sb
, ROOT_I
);
809 goto retry_iget5_locked
;
813 cifs_fattr_to_inode(inode
, fattr
);
814 if (sb
->s_flags
& MS_NOATIME
)
815 inode
->i_flags
|= S_NOATIME
| S_NOCMTIME
;
816 if (inode
->i_state
& I_NEW
) {
818 if (S_ISREG(inode
->i_mode
))
819 inode
->i_data
.backing_dev_info
= sb
->s_bdi
;
820 #ifdef CONFIG_CIFS_FSCACHE
821 /* initialize per-inode cache cookie pointer */
822 CIFS_I(inode
)->fscache
= NULL
;
824 unlock_new_inode(inode
);
831 /* gets root inode */
832 struct inode
*cifs_root_iget(struct super_block
*sb
)
835 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
836 struct inode
*inode
= NULL
;
838 struct cifs_tcon
*tcon
= cifs_sb_master_tcon(cifs_sb
);
842 rc
= cifs_get_inode_info_unix(&inode
, "", sb
, xid
);
844 rc
= cifs_get_inode_info(&inode
, "", NULL
, sb
, xid
, NULL
);
851 #ifdef CONFIG_CIFS_FSCACHE
852 /* populate tcon->resource_id */
853 tcon
->resource_id
= CIFS_I(inode
)->uniqueid
;
856 if (rc
&& tcon
->ipc
) {
857 cFYI(1, "ipc connection - fake read inode");
858 spin_lock(&inode
->i_lock
);
859 inode
->i_mode
|= S_IFDIR
;
861 inode
->i_op
= &cifs_ipc_inode_ops
;
862 inode
->i_fop
= &simple_dir_operations
;
863 inode
->i_uid
= cifs_sb
->mnt_uid
;
864 inode
->i_gid
= cifs_sb
->mnt_gid
;
865 spin_unlock(&inode
->i_lock
);
872 /* can not call macro free_xid here since in a void func
873 * TODO: This is no longer true
880 cifs_set_file_info(struct inode
*inode
, struct iattr
*attrs
, unsigned int xid
,
881 char *full_path
, __u32 dosattr
)
887 bool set_time
= false;
888 struct cifsFileInfo
*open_file
;
889 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
890 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
891 struct tcon_link
*tlink
= NULL
;
892 struct cifs_tcon
*pTcon
;
893 FILE_BASIC_INFO info_buf
;
898 if (attrs
->ia_valid
& ATTR_ATIME
) {
900 info_buf
.LastAccessTime
=
901 cpu_to_le64(cifs_UnixTimeToNT(attrs
->ia_atime
));
903 info_buf
.LastAccessTime
= 0;
905 if (attrs
->ia_valid
& ATTR_MTIME
) {
907 info_buf
.LastWriteTime
=
908 cpu_to_le64(cifs_UnixTimeToNT(attrs
->ia_mtime
));
910 info_buf
.LastWriteTime
= 0;
913 * Samba throws this field away, but windows may actually use it.
914 * Do not set ctime unless other time stamps are changed explicitly
915 * (i.e. by utimes()) since we would then have a mix of client and
918 if (set_time
&& (attrs
->ia_valid
& ATTR_CTIME
)) {
919 cFYI(1, "CIFS - CTIME changed");
920 info_buf
.ChangeTime
=
921 cpu_to_le64(cifs_UnixTimeToNT(attrs
->ia_ctime
));
923 info_buf
.ChangeTime
= 0;
925 info_buf
.CreationTime
= 0; /* don't change */
926 info_buf
.Attributes
= cpu_to_le32(dosattr
);
929 * If the file is already open for write, just use that fileid
931 open_file
= find_writable_file(cifsInode
, true);
933 netfid
= open_file
->netfid
;
934 netpid
= open_file
->pid
;
935 pTcon
= tlink_tcon(open_file
->tlink
);
936 goto set_via_filehandle
;
939 tlink
= cifs_sb_tlink(cifs_sb
);
945 pTcon
= tlink_tcon(tlink
);
948 * NT4 apparently returns success on this call, but it doesn't
951 if (!(pTcon
->ses
->flags
& CIFS_SES_NT4
)) {
952 rc
= CIFSSMBSetPathInfo(xid
, pTcon
, full_path
,
953 &info_buf
, cifs_sb
->local_nls
,
954 cifs_sb
->mnt_cifs_flags
&
955 CIFS_MOUNT_MAP_SPECIAL_CHR
);
957 cifsInode
->cifsAttrs
= dosattr
;
959 } else if (rc
!= -EOPNOTSUPP
&& rc
!= -EINVAL
)
963 cFYI(1, "calling SetFileInfo since SetPathInfo for "
964 "times not supported by this server");
965 rc
= CIFSSMBOpen(xid
, pTcon
, full_path
, FILE_OPEN
,
966 SYNCHRONIZE
| FILE_WRITE_ATTRIBUTES
,
967 CREATE_NOT_DIR
, &netfid
, &oplock
,
968 NULL
, cifs_sb
->local_nls
,
969 cifs_sb
->mnt_cifs_flags
&
970 CIFS_MOUNT_MAP_SPECIAL_CHR
);
978 netpid
= current
->tgid
;
981 rc
= CIFSSMBSetFileInfo(xid
, pTcon
, &info_buf
, netfid
, netpid
);
983 cifsInode
->cifsAttrs
= dosattr
;
985 if (open_file
== NULL
)
986 CIFSSMBClose(xid
, pTcon
, netfid
);
988 cifsFileInfo_put(open_file
);
991 cifs_put_tlink(tlink
);
996 * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
997 * and rename it to a random name that hopefully won't conflict with
1001 cifs_rename_pending_delete(char *full_path
, struct dentry
*dentry
,
1007 struct inode
*inode
= dentry
->d_inode
;
1008 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
1009 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1010 struct tcon_link
*tlink
;
1011 struct cifs_tcon
*tcon
;
1012 __u32 dosattr
, origattr
;
1013 FILE_BASIC_INFO
*info_buf
= NULL
;
1015 tlink
= cifs_sb_tlink(cifs_sb
);
1017 return PTR_ERR(tlink
);
1018 tcon
= tlink_tcon(tlink
);
1020 rc
= CIFSSMBOpen(xid
, tcon
, full_path
, FILE_OPEN
,
1021 DELETE
|FILE_WRITE_ATTRIBUTES
, CREATE_NOT_DIR
,
1022 &netfid
, &oplock
, NULL
, cifs_sb
->local_nls
,
1023 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR
);
1027 origattr
= cifsInode
->cifsAttrs
;
1029 origattr
|= ATTR_NORMAL
;
1031 dosattr
= origattr
& ~ATTR_READONLY
;
1033 dosattr
|= ATTR_NORMAL
;
1034 dosattr
|= ATTR_HIDDEN
;
1036 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1037 if (dosattr
!= origattr
) {
1038 info_buf
= kzalloc(sizeof(*info_buf
), GFP_KERNEL
);
1039 if (info_buf
== NULL
) {
1043 info_buf
->Attributes
= cpu_to_le32(dosattr
);
1044 rc
= CIFSSMBSetFileInfo(xid
, tcon
, info_buf
, netfid
,
1046 /* although we would like to mark the file hidden
1047 if that fails we will still try to rename it */
1049 cifsInode
->cifsAttrs
= dosattr
;
1051 dosattr
= origattr
; /* since not able to change them */
1054 /* rename the file */
1055 rc
= CIFSSMBRenameOpenFile(xid
, tcon
, netfid
, NULL
, cifs_sb
->local_nls
,
1056 cifs_sb
->mnt_cifs_flags
&
1057 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1063 /* try to set DELETE_ON_CLOSE */
1064 if (!cifsInode
->delete_pending
) {
1065 rc
= CIFSSMBSetFileDisposition(xid
, tcon
, true, netfid
,
1068 * some samba versions return -ENOENT when we try to set the
1069 * file disposition here. Likely a samba bug, but work around
1070 * it for now. This means that some cifsXXX files may hang
1071 * around after they shouldn't.
1073 * BB: remove this hack after more servers have the fix
1081 cifsInode
->delete_pending
= true;
1085 CIFSSMBClose(xid
, tcon
, netfid
);
1088 cifs_put_tlink(tlink
);
1092 * reset everything back to the original state. Don't bother
1093 * dealing with errors here since we can't do anything about
1097 CIFSSMBRenameOpenFile(xid
, tcon
, netfid
, dentry
->d_name
.name
,
1098 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1099 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1101 if (dosattr
!= origattr
) {
1102 info_buf
->Attributes
= cpu_to_le32(origattr
);
1103 if (!CIFSSMBSetFileInfo(xid
, tcon
, info_buf
, netfid
,
1105 cifsInode
->cifsAttrs
= origattr
;
1111 /* copied from fs/nfs/dir.c with small changes */
1113 cifs_drop_nlink(struct inode
*inode
)
1115 spin_lock(&inode
->i_lock
);
1116 if (inode
->i_nlink
> 0)
1118 spin_unlock(&inode
->i_lock
);
1122 * If dentry->d_inode is null (usually meaning the cached dentry
1123 * is a negative dentry) then we would attempt a standard SMB delete, but
1124 * if that fails we can not attempt the fall back mechanisms on EACCESS
1125 * but will return the EACCESS to the caller. Note that the VFS does not call
1126 * unlink on negative dentries currently.
1128 int cifs_unlink(struct inode
*dir
, struct dentry
*dentry
)
1132 char *full_path
= NULL
;
1133 struct inode
*inode
= dentry
->d_inode
;
1134 struct cifsInodeInfo
*cifs_inode
;
1135 struct super_block
*sb
= dir
->i_sb
;
1136 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
1137 struct tcon_link
*tlink
;
1138 struct cifs_tcon
*tcon
;
1139 struct iattr
*attrs
= NULL
;
1140 __u32 dosattr
= 0, origattr
= 0;
1142 cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir
, dentry
);
1144 tlink
= cifs_sb_tlink(cifs_sb
);
1146 return PTR_ERR(tlink
);
1147 tcon
= tlink_tcon(tlink
);
1151 /* Unlink can be called from rename so we can not take the
1152 * sb->s_vfs_rename_mutex here */
1153 full_path
= build_path_from_dentry(dentry
);
1154 if (full_path
== NULL
) {
1159 if (cap_unix(tcon
->ses
) && (CIFS_UNIX_POSIX_PATH_OPS_CAP
&
1160 le64_to_cpu(tcon
->fsUnixInfo
.Capability
))) {
1161 rc
= CIFSPOSIXDelFile(xid
, tcon
, full_path
,
1162 SMB_POSIX_UNLINK_FILE_TARGET
, cifs_sb
->local_nls
,
1163 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR
);
1164 cFYI(1, "posix del rc %d", rc
);
1165 if ((rc
== 0) || (rc
== -ENOENT
))
1166 goto psx_del_no_retry
;
1170 rc
= CIFSSMBDelFile(xid
, tcon
, full_path
, cifs_sb
->local_nls
,
1171 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR
);
1176 cifs_drop_nlink(inode
);
1177 } else if (rc
== -ENOENT
) {
1179 } else if (rc
== -ETXTBSY
) {
1180 rc
= cifs_rename_pending_delete(full_path
, dentry
, xid
);
1182 cifs_drop_nlink(inode
);
1183 } else if ((rc
== -EACCES
) && (dosattr
== 0) && inode
) {
1184 attrs
= kzalloc(sizeof(*attrs
), GFP_KERNEL
);
1185 if (attrs
== NULL
) {
1190 /* try to reset dos attributes */
1191 cifs_inode
= CIFS_I(inode
);
1192 origattr
= cifs_inode
->cifsAttrs
;
1194 origattr
|= ATTR_NORMAL
;
1195 dosattr
= origattr
& ~ATTR_READONLY
;
1197 dosattr
|= ATTR_NORMAL
;
1198 dosattr
|= ATTR_HIDDEN
;
1200 rc
= cifs_set_file_info(inode
, attrs
, xid
, full_path
, dosattr
);
1204 goto retry_std_delete
;
1207 /* undo the setattr if we errored out and it's needed */
1208 if (rc
!= 0 && dosattr
!= 0)
1209 cifs_set_file_info(inode
, attrs
, xid
, full_path
, origattr
);
1213 cifs_inode
= CIFS_I(inode
);
1214 cifs_inode
->time
= 0; /* will force revalidate to get info
1216 inode
->i_ctime
= current_fs_time(sb
);
1218 dir
->i_ctime
= dir
->i_mtime
= current_fs_time(sb
);
1219 cifs_inode
= CIFS_I(dir
);
1220 CIFS_I(dir
)->time
= 0; /* force revalidate of dir as well */
1225 cifs_put_tlink(tlink
);
1230 cifs_mkdir_qinfo(struct inode
*inode
, struct dentry
*dentry
, umode_t mode
,
1231 const char *full_path
, struct cifs_sb_info
*cifs_sb
,
1232 struct cifs_tcon
*tcon
, const unsigned int xid
)
1235 struct inode
*newinode
= NULL
;
1238 rc
= cifs_get_inode_info_unix(&newinode
, full_path
, inode
->i_sb
,
1241 rc
= cifs_get_inode_info(&newinode
, full_path
, NULL
,
1242 inode
->i_sb
, xid
, NULL
);
1246 d_instantiate(dentry
, newinode
);
1248 * setting nlink not necessary except in cases where we failed to get it
1249 * from the server or was set bogus
1251 spin_lock(&dentry
->d_inode
->i_lock
);
1252 if ((dentry
->d_inode
) && (dentry
->d_inode
->i_nlink
< 2))
1253 set_nlink(dentry
->d_inode
, 2);
1254 spin_unlock(&dentry
->d_inode
->i_lock
);
1255 mode
&= ~current_umask();
1256 /* must turn on setgid bit if parent dir has it */
1257 if (inode
->i_mode
& S_ISGID
)
1260 if (tcon
->unix_ext
) {
1261 struct cifs_unix_set_info_args args
= {
1263 .ctime
= NO_CHANGE_64
,
1264 .atime
= NO_CHANGE_64
,
1265 .mtime
= NO_CHANGE_64
,
1268 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SET_UID
) {
1269 args
.uid
= (__u64
)current_fsuid();
1270 if (inode
->i_mode
& S_ISGID
)
1271 args
.gid
= (__u64
)inode
->i_gid
;
1273 args
.gid
= (__u64
)current_fsgid();
1275 args
.uid
= NO_CHANGE_64
;
1276 args
.gid
= NO_CHANGE_64
;
1278 CIFSSMBUnixSetPathInfo(xid
, tcon
, full_path
, &args
,
1280 cifs_sb
->mnt_cifs_flags
&
1281 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1283 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
1284 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) &&
1285 (mode
& S_IWUGO
) == 0 && server
->ops
->mkdir_setinfo
)
1286 server
->ops
->mkdir_setinfo(newinode
, full_path
, cifs_sb
,
1288 if (dentry
->d_inode
) {
1289 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
)
1290 dentry
->d_inode
->i_mode
= (mode
| S_IFDIR
);
1292 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SET_UID
) {
1293 dentry
->d_inode
->i_uid
= current_fsuid();
1294 if (inode
->i_mode
& S_ISGID
)
1295 dentry
->d_inode
->i_gid
= inode
->i_gid
;
1297 dentry
->d_inode
->i_gid
=
1306 cifs_posix_mkdir(struct inode
*inode
, struct dentry
*dentry
, umode_t mode
,
1307 const char *full_path
, struct cifs_sb_info
*cifs_sb
,
1308 struct cifs_tcon
*tcon
, const unsigned int xid
)
1312 FILE_UNIX_BASIC_INFO
*info
= NULL
;
1313 struct inode
*newinode
= NULL
;
1314 struct cifs_fattr fattr
;
1316 info
= kzalloc(sizeof(FILE_UNIX_BASIC_INFO
), GFP_KERNEL
);
1319 goto posix_mkdir_out
;
1322 mode
&= ~current_umask();
1323 rc
= CIFSPOSIXCreate(xid
, tcon
, SMB_O_DIRECTORY
| SMB_O_CREAT
, mode
,
1324 NULL
/* netfid */, info
, &oplock
, full_path
,
1325 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1326 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1327 if (rc
== -EOPNOTSUPP
)
1328 goto posix_mkdir_out
;
1330 cFYI(1, "posix mkdir returned 0x%x", rc
);
1332 goto posix_mkdir_out
;
1335 if (info
->Type
== cpu_to_le32(-1))
1336 /* no return info, go query for it */
1337 goto posix_mkdir_get_info
;
1339 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1340 * need to set uid/gid.
1343 cifs_unix_basic_to_fattr(&fattr
, info
, cifs_sb
);
1344 cifs_fill_uniqueid(inode
->i_sb
, &fattr
);
1345 newinode
= cifs_iget(inode
->i_sb
, &fattr
);
1347 goto posix_mkdir_get_info
;
1349 d_instantiate(dentry
, newinode
);
1351 #ifdef CONFIG_CIFS_DEBUG2
1352 cFYI(1, "instantiated dentry %p %s to inode %p", dentry
,
1353 dentry
->d_name
.name
, newinode
);
1355 if (newinode
->i_nlink
!= 2)
1356 cFYI(1, "unexpected number of links %d", newinode
->i_nlink
);
1362 posix_mkdir_get_info
:
1363 rc
= cifs_mkdir_qinfo(inode
, dentry
, mode
, full_path
, cifs_sb
, tcon
,
1365 goto posix_mkdir_out
;
1368 int cifs_mkdir(struct inode
*inode
, struct dentry
*direntry
, umode_t mode
)
1372 struct cifs_sb_info
*cifs_sb
;
1373 struct tcon_link
*tlink
;
1374 struct cifs_tcon
*tcon
;
1375 struct TCP_Server_Info
*server
;
1378 cFYI(1, "In cifs_mkdir, mode = 0x%hx inode = 0x%p", mode
, inode
);
1380 cifs_sb
= CIFS_SB(inode
->i_sb
);
1381 tlink
= cifs_sb_tlink(cifs_sb
);
1383 return PTR_ERR(tlink
);
1384 tcon
= tlink_tcon(tlink
);
1388 full_path
= build_path_from_dentry(direntry
);
1389 if (full_path
== NULL
) {
1394 if (cap_unix(tcon
->ses
) && (CIFS_UNIX_POSIX_PATH_OPS_CAP
&
1395 le64_to_cpu(tcon
->fsUnixInfo
.Capability
))) {
1396 rc
= cifs_posix_mkdir(inode
, direntry
, mode
, full_path
, cifs_sb
,
1398 if (rc
!= -EOPNOTSUPP
)
1402 server
= tcon
->ses
->server
;
1404 if (!server
->ops
->mkdir
) {
1409 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1410 rc
= server
->ops
->mkdir(xid
, tcon
, full_path
, cifs_sb
);
1412 cFYI(1, "cifs_mkdir returned 0x%x", rc
);
1417 rc
= cifs_mkdir_qinfo(inode
, direntry
, mode
, full_path
, cifs_sb
, tcon
,
1421 * Force revalidate to get parent dir info when needed since cached
1422 * attributes are invalid now.
1424 CIFS_I(inode
)->time
= 0;
1427 cifs_put_tlink(tlink
);
1431 int cifs_rmdir(struct inode
*inode
, struct dentry
*direntry
)
1435 struct cifs_sb_info
*cifs_sb
;
1436 struct tcon_link
*tlink
;
1437 struct cifs_tcon
*tcon
;
1438 struct TCP_Server_Info
*server
;
1439 char *full_path
= NULL
;
1440 struct cifsInodeInfo
*cifsInode
;
1442 cFYI(1, "cifs_rmdir, inode = 0x%p", inode
);
1446 full_path
= build_path_from_dentry(direntry
);
1447 if (full_path
== NULL
) {
1452 cifs_sb
= CIFS_SB(inode
->i_sb
);
1453 tlink
= cifs_sb_tlink(cifs_sb
);
1454 if (IS_ERR(tlink
)) {
1455 rc
= PTR_ERR(tlink
);
1458 tcon
= tlink_tcon(tlink
);
1459 server
= tcon
->ses
->server
;
1461 if (!server
->ops
->rmdir
) {
1463 cifs_put_tlink(tlink
);
1467 rc
= server
->ops
->rmdir(xid
, tcon
, full_path
, cifs_sb
);
1468 cifs_put_tlink(tlink
);
1471 spin_lock(&direntry
->d_inode
->i_lock
);
1472 i_size_write(direntry
->d_inode
, 0);
1473 clear_nlink(direntry
->d_inode
);
1474 spin_unlock(&direntry
->d_inode
->i_lock
);
1477 cifsInode
= CIFS_I(direntry
->d_inode
);
1478 /* force revalidate to go get info when needed */
1479 cifsInode
->time
= 0;
1481 cifsInode
= CIFS_I(inode
);
1483 * Force revalidate to get parent dir info when needed since cached
1484 * attributes are invalid now.
1486 cifsInode
->time
= 0;
1488 direntry
->d_inode
->i_ctime
= inode
->i_ctime
= inode
->i_mtime
=
1489 current_fs_time(inode
->i_sb
);
1498 cifs_do_rename(unsigned int xid
, struct dentry
*from_dentry
,
1499 const char *fromPath
, struct dentry
*to_dentry
,
1502 struct cifs_sb_info
*cifs_sb
= CIFS_SB(from_dentry
->d_sb
);
1503 struct tcon_link
*tlink
;
1504 struct cifs_tcon
*pTcon
;
1508 tlink
= cifs_sb_tlink(cifs_sb
);
1510 return PTR_ERR(tlink
);
1511 pTcon
= tlink_tcon(tlink
);
1513 /* try path-based rename first */
1514 rc
= CIFSSMBRename(xid
, pTcon
, fromPath
, toPath
, cifs_sb
->local_nls
,
1515 cifs_sb
->mnt_cifs_flags
&
1516 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1519 * don't bother with rename by filehandle unless file is busy and
1520 * source Note that cross directory moves do not work with
1521 * rename by filehandle to various Windows servers.
1523 if (rc
== 0 || rc
!= -ETXTBSY
)
1524 goto do_rename_exit
;
1526 /* open-file renames don't work across directories */
1527 if (to_dentry
->d_parent
!= from_dentry
->d_parent
)
1528 goto do_rename_exit
;
1530 /* open the file to be renamed -- we need DELETE perms */
1531 rc
= CIFSSMBOpen(xid
, pTcon
, fromPath
, FILE_OPEN
, DELETE
,
1532 CREATE_NOT_DIR
, &srcfid
, &oplock
, NULL
,
1533 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1534 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1537 rc
= CIFSSMBRenameOpenFile(xid
, pTcon
, srcfid
,
1538 (const char *) to_dentry
->d_name
.name
,
1539 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1540 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1542 CIFSSMBClose(xid
, pTcon
, srcfid
);
1545 cifs_put_tlink(tlink
);
1549 int cifs_rename(struct inode
*source_dir
, struct dentry
*source_dentry
,
1550 struct inode
*target_dir
, struct dentry
*target_dentry
)
1552 char *fromName
= NULL
;
1553 char *toName
= NULL
;
1554 struct cifs_sb_info
*cifs_sb
;
1555 struct tcon_link
*tlink
;
1556 struct cifs_tcon
*tcon
;
1557 FILE_UNIX_BASIC_INFO
*info_buf_source
= NULL
;
1558 FILE_UNIX_BASIC_INFO
*info_buf_target
;
1562 cifs_sb
= CIFS_SB(source_dir
->i_sb
);
1563 tlink
= cifs_sb_tlink(cifs_sb
);
1565 return PTR_ERR(tlink
);
1566 tcon
= tlink_tcon(tlink
);
1571 * we already have the rename sem so we do not need to
1572 * grab it again here to protect the path integrity
1574 fromName
= build_path_from_dentry(source_dentry
);
1575 if (fromName
== NULL
) {
1577 goto cifs_rename_exit
;
1580 toName
= build_path_from_dentry(target_dentry
);
1581 if (toName
== NULL
) {
1583 goto cifs_rename_exit
;
1586 rc
= cifs_do_rename(xid
, source_dentry
, fromName
,
1587 target_dentry
, toName
);
1589 if (rc
== -EEXIST
&& tcon
->unix_ext
) {
1591 * Are src and dst hardlinks of same inode? We can
1592 * only tell with unix extensions enabled
1595 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO
),
1597 if (info_buf_source
== NULL
) {
1599 goto cifs_rename_exit
;
1602 info_buf_target
= info_buf_source
+ 1;
1603 tmprc
= CIFSSMBUnixQPathInfo(xid
, tcon
, fromName
,
1606 cifs_sb
->mnt_cifs_flags
&
1607 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1611 tmprc
= CIFSSMBUnixQPathInfo(xid
, tcon
, toName
,
1614 cifs_sb
->mnt_cifs_flags
&
1615 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1617 if (tmprc
== 0 && (info_buf_source
->UniqueId
==
1618 info_buf_target
->UniqueId
)) {
1619 /* same file, POSIX says that this is a noop */
1621 goto cifs_rename_exit
;
1623 } /* else ... BB we could add the same check for Windows by
1624 checking the UniqueId via FILE_INTERNAL_INFO */
1627 /* Try unlinking the target dentry if it's not negative */
1628 if (target_dentry
->d_inode
&& (rc
== -EACCES
|| rc
== -EEXIST
)) {
1629 tmprc
= cifs_unlink(target_dir
, target_dentry
);
1631 goto cifs_rename_exit
;
1633 rc
= cifs_do_rename(xid
, source_dentry
, fromName
,
1634 target_dentry
, toName
);
1638 kfree(info_buf_source
);
1642 cifs_put_tlink(tlink
);
1647 cifs_inode_needs_reval(struct inode
*inode
)
1649 struct cifsInodeInfo
*cifs_i
= CIFS_I(inode
);
1650 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1652 if (cifs_i
->clientCanCacheRead
)
1655 if (!lookupCacheEnabled
)
1658 if (cifs_i
->time
== 0)
1661 if (!time_in_range(jiffies
, cifs_i
->time
,
1662 cifs_i
->time
+ cifs_sb
->actimeo
))
1665 /* hardlinked files w/ noserverino get "special" treatment */
1666 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
) &&
1667 S_ISREG(inode
->i_mode
) && inode
->i_nlink
!= 1)
1674 * Zap the cache. Called when invalid_mapping flag is set.
1677 cifs_invalidate_mapping(struct inode
*inode
)
1680 struct cifsInodeInfo
*cifs_i
= CIFS_I(inode
);
1682 cifs_i
->invalid_mapping
= false;
1684 if (inode
->i_mapping
&& inode
->i_mapping
->nrpages
!= 0) {
1685 rc
= invalidate_inode_pages2(inode
->i_mapping
);
1687 cERROR(1, "%s: could not invalidate inode %p", __func__
,
1689 cifs_i
->invalid_mapping
= true;
1693 cifs_fscache_reset_inode_cookie(inode
);
1697 int cifs_revalidate_file_attr(struct file
*filp
)
1700 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
1701 struct cifsFileInfo
*cfile
= (struct cifsFileInfo
*) filp
->private_data
;
1703 if (!cifs_inode_needs_reval(inode
))
1706 if (tlink_tcon(cfile
->tlink
)->unix_ext
)
1707 rc
= cifs_get_file_info_unix(filp
);
1709 rc
= cifs_get_file_info(filp
);
1714 int cifs_revalidate_dentry_attr(struct dentry
*dentry
)
1718 struct inode
*inode
= dentry
->d_inode
;
1719 struct super_block
*sb
= dentry
->d_sb
;
1720 char *full_path
= NULL
;
1725 if (!cifs_inode_needs_reval(inode
))
1730 /* can not safely grab the rename sem here if rename calls revalidate
1731 since that would deadlock */
1732 full_path
= build_path_from_dentry(dentry
);
1733 if (full_path
== NULL
) {
1738 cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time "
1739 "%ld jiffies %ld", full_path
, inode
, inode
->i_count
.counter
,
1740 dentry
, dentry
->d_time
, jiffies
);
1742 if (cifs_sb_master_tcon(CIFS_SB(sb
))->unix_ext
)
1743 rc
= cifs_get_inode_info_unix(&inode
, full_path
, sb
, xid
);
1745 rc
= cifs_get_inode_info(&inode
, full_path
, NULL
, sb
,
1754 int cifs_revalidate_file(struct file
*filp
)
1757 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
1759 rc
= cifs_revalidate_file_attr(filp
);
1763 if (CIFS_I(inode
)->invalid_mapping
)
1764 rc
= cifs_invalidate_mapping(inode
);
1768 /* revalidate a dentry's inode attributes */
1769 int cifs_revalidate_dentry(struct dentry
*dentry
)
1772 struct inode
*inode
= dentry
->d_inode
;
1774 rc
= cifs_revalidate_dentry_attr(dentry
);
1778 if (CIFS_I(inode
)->invalid_mapping
)
1779 rc
= cifs_invalidate_mapping(inode
);
1783 int cifs_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
,
1786 struct cifs_sb_info
*cifs_sb
= CIFS_SB(dentry
->d_sb
);
1787 struct cifs_tcon
*tcon
= cifs_sb_master_tcon(cifs_sb
);
1788 struct inode
*inode
= dentry
->d_inode
;
1792 * We need to be sure that all dirty pages are written and the server
1793 * has actual ctime, mtime and file length.
1795 if (!CIFS_I(inode
)->clientCanCacheRead
&& inode
->i_mapping
&&
1796 inode
->i_mapping
->nrpages
!= 0) {
1797 rc
= filemap_fdatawait(inode
->i_mapping
);
1799 mapping_set_error(inode
->i_mapping
, rc
);
1804 rc
= cifs_revalidate_dentry_attr(dentry
);
1808 generic_fillattr(inode
, stat
);
1809 stat
->blksize
= CIFS_MAX_MSGSIZE
;
1810 stat
->ino
= CIFS_I(inode
)->uniqueid
;
1813 * If on a multiuser mount without unix extensions, and the admin hasn't
1814 * overridden them, set the ownership to the fsuid/fsgid of the current
1817 if ((cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MULTIUSER
) &&
1819 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_UID
))
1820 stat
->uid
= current_fsuid();
1821 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_GID
))
1822 stat
->gid
= current_fsgid();
1827 static int cifs_truncate_page(struct address_space
*mapping
, loff_t from
)
1829 pgoff_t index
= from
>> PAGE_CACHE_SHIFT
;
1830 unsigned offset
= from
& (PAGE_CACHE_SIZE
- 1);
1834 page
= grab_cache_page(mapping
, index
);
1838 zero_user_segment(page
, offset
, PAGE_CACHE_SIZE
);
1840 page_cache_release(page
);
1844 static void cifs_setsize(struct inode
*inode
, loff_t offset
)
1848 spin_lock(&inode
->i_lock
);
1849 oldsize
= inode
->i_size
;
1850 i_size_write(inode
, offset
);
1851 spin_unlock(&inode
->i_lock
);
1853 truncate_pagecache(inode
, oldsize
, offset
);
1857 cifs_set_file_size(struct inode
*inode
, struct iattr
*attrs
,
1858 unsigned int xid
, char *full_path
)
1861 struct cifsFileInfo
*open_file
;
1862 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
1863 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1864 struct tcon_link
*tlink
= NULL
;
1865 struct cifs_tcon
*pTcon
= NULL
;
1866 struct cifs_io_parms io_parms
;
1869 * To avoid spurious oplock breaks from server, in the case of
1870 * inodes that we already have open, avoid doing path based
1871 * setting of file size if we can do it by handle.
1872 * This keeps our caching token (oplock) and avoids timeouts
1873 * when the local oplock break takes longer to flush
1874 * writebehind data than the SMB timeout for the SetPathInfo
1875 * request would allow
1877 open_file
= find_writable_file(cifsInode
, true);
1879 __u16 nfid
= open_file
->netfid
;
1880 __u32 npid
= open_file
->pid
;
1881 pTcon
= tlink_tcon(open_file
->tlink
);
1882 rc
= CIFSSMBSetFileSize(xid
, pTcon
, attrs
->ia_size
, nfid
,
1884 cifsFileInfo_put(open_file
);
1885 cFYI(1, "SetFSize for attrs rc = %d", rc
);
1886 if ((rc
== -EINVAL
) || (rc
== -EOPNOTSUPP
)) {
1887 unsigned int bytes_written
;
1889 io_parms
.netfid
= nfid
;
1890 io_parms
.pid
= npid
;
1891 io_parms
.tcon
= pTcon
;
1892 io_parms
.offset
= 0;
1893 io_parms
.length
= attrs
->ia_size
;
1894 rc
= CIFSSMBWrite(xid
, &io_parms
, &bytes_written
,
1896 cFYI(1, "Wrt seteof rc %d", rc
);
1902 if (pTcon
== NULL
) {
1903 tlink
= cifs_sb_tlink(cifs_sb
);
1905 return PTR_ERR(tlink
);
1906 pTcon
= tlink_tcon(tlink
);
1909 /* Set file size by pathname rather than by handle
1910 either because no valid, writeable file handle for
1911 it was found or because there was an error setting
1913 rc
= CIFSSMBSetEOF(xid
, pTcon
, full_path
, attrs
->ia_size
,
1914 false, cifs_sb
->local_nls
,
1915 cifs_sb
->mnt_cifs_flags
&
1916 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1917 cFYI(1, "SetEOF by path (setattrs) rc = %d", rc
);
1918 if ((rc
== -EINVAL
) || (rc
== -EOPNOTSUPP
)) {
1922 rc
= SMBLegacyOpen(xid
, pTcon
, full_path
,
1923 FILE_OPEN
, GENERIC_WRITE
,
1924 CREATE_NOT_DIR
, &netfid
, &oplock
, NULL
,
1926 cifs_sb
->mnt_cifs_flags
&
1927 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1929 unsigned int bytes_written
;
1931 io_parms
.netfid
= netfid
;
1932 io_parms
.pid
= current
->tgid
;
1933 io_parms
.tcon
= pTcon
;
1934 io_parms
.offset
= 0;
1935 io_parms
.length
= attrs
->ia_size
;
1936 rc
= CIFSSMBWrite(xid
, &io_parms
,
1939 cFYI(1, "wrt seteof rc %d", rc
);
1940 CIFSSMBClose(xid
, pTcon
, netfid
);
1944 cifs_put_tlink(tlink
);
1948 cifsInode
->server_eof
= attrs
->ia_size
;
1949 cifs_setsize(inode
, attrs
->ia_size
);
1950 cifs_truncate_page(inode
->i_mapping
, inode
->i_size
);
1957 cifs_setattr_unix(struct dentry
*direntry
, struct iattr
*attrs
)
1961 char *full_path
= NULL
;
1962 struct inode
*inode
= direntry
->d_inode
;
1963 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
1964 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1965 struct tcon_link
*tlink
;
1966 struct cifs_tcon
*pTcon
;
1967 struct cifs_unix_set_info_args
*args
= NULL
;
1968 struct cifsFileInfo
*open_file
;
1970 cFYI(1, "setattr_unix on file %s attrs->ia_valid=0x%x",
1971 direntry
->d_name
.name
, attrs
->ia_valid
);
1975 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_NO_PERM
)
1976 attrs
->ia_valid
|= ATTR_FORCE
;
1978 rc
= inode_change_ok(inode
, attrs
);
1982 full_path
= build_path_from_dentry(direntry
);
1983 if (full_path
== NULL
) {
1989 * Attempt to flush data before changing attributes. We need to do
1990 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
1991 * ownership or mode then we may also need to do this. Here, we take
1992 * the safe way out and just do the flush on all setattr requests. If
1993 * the flush returns error, store it to report later and continue.
1995 * BB: This should be smarter. Why bother flushing pages that
1996 * will be truncated anyway? Also, should we error out here if
1997 * the flush returns error?
1999 rc
= filemap_write_and_wait(inode
->i_mapping
);
2000 mapping_set_error(inode
->i_mapping
, rc
);
2003 if (attrs
->ia_valid
& ATTR_SIZE
) {
2004 rc
= cifs_set_file_size(inode
, attrs
, xid
, full_path
);
2009 /* skip mode change if it's just for clearing setuid/setgid */
2010 if (attrs
->ia_valid
& (ATTR_KILL_SUID
|ATTR_KILL_SGID
))
2011 attrs
->ia_valid
&= ~ATTR_MODE
;
2013 args
= kmalloc(sizeof(*args
), GFP_KERNEL
);
2019 /* set up the struct */
2020 if (attrs
->ia_valid
& ATTR_MODE
)
2021 args
->mode
= attrs
->ia_mode
;
2023 args
->mode
= NO_CHANGE_64
;
2025 if (attrs
->ia_valid
& ATTR_UID
)
2026 args
->uid
= attrs
->ia_uid
;
2028 args
->uid
= NO_CHANGE_64
;
2030 if (attrs
->ia_valid
& ATTR_GID
)
2031 args
->gid
= attrs
->ia_gid
;
2033 args
->gid
= NO_CHANGE_64
;
2035 if (attrs
->ia_valid
& ATTR_ATIME
)
2036 args
->atime
= cifs_UnixTimeToNT(attrs
->ia_atime
);
2038 args
->atime
= NO_CHANGE_64
;
2040 if (attrs
->ia_valid
& ATTR_MTIME
)
2041 args
->mtime
= cifs_UnixTimeToNT(attrs
->ia_mtime
);
2043 args
->mtime
= NO_CHANGE_64
;
2045 if (attrs
->ia_valid
& ATTR_CTIME
)
2046 args
->ctime
= cifs_UnixTimeToNT(attrs
->ia_ctime
);
2048 args
->ctime
= NO_CHANGE_64
;
2051 open_file
= find_writable_file(cifsInode
, true);
2053 u16 nfid
= open_file
->netfid
;
2054 u32 npid
= open_file
->pid
;
2055 pTcon
= tlink_tcon(open_file
->tlink
);
2056 rc
= CIFSSMBUnixSetFileInfo(xid
, pTcon
, args
, nfid
, npid
);
2057 cifsFileInfo_put(open_file
);
2059 tlink
= cifs_sb_tlink(cifs_sb
);
2060 if (IS_ERR(tlink
)) {
2061 rc
= PTR_ERR(tlink
);
2064 pTcon
= tlink_tcon(tlink
);
2065 rc
= CIFSSMBUnixSetPathInfo(xid
, pTcon
, full_path
, args
,
2067 cifs_sb
->mnt_cifs_flags
&
2068 CIFS_MOUNT_MAP_SPECIAL_CHR
);
2069 cifs_put_tlink(tlink
);
2075 if ((attrs
->ia_valid
& ATTR_SIZE
) &&
2076 attrs
->ia_size
!= i_size_read(inode
))
2077 truncate_setsize(inode
, attrs
->ia_size
);
2079 setattr_copy(inode
, attrs
);
2080 mark_inode_dirty(inode
);
2082 /* force revalidate when any of these times are set since some
2083 of the fs types (eg ext3, fat) do not have fine enough
2084 time granularity to match protocol, and we do not have a
2085 a way (yet) to query the server fs's time granularity (and
2086 whether it rounds times down).
2088 if (attrs
->ia_valid
& (ATTR_MTIME
| ATTR_CTIME
))
2089 cifsInode
->time
= 0;
2098 cifs_setattr_nounix(struct dentry
*direntry
, struct iattr
*attrs
)
2101 uid_t uid
= NO_CHANGE_32
;
2102 gid_t gid
= NO_CHANGE_32
;
2103 struct inode
*inode
= direntry
->d_inode
;
2104 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2105 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
2106 char *full_path
= NULL
;
2109 __u64 mode
= NO_CHANGE_64
;
2113 cFYI(1, "setattr on file %s attrs->iavalid 0x%x",
2114 direntry
->d_name
.name
, attrs
->ia_valid
);
2116 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_NO_PERM
)
2117 attrs
->ia_valid
|= ATTR_FORCE
;
2119 rc
= inode_change_ok(inode
, attrs
);
2125 full_path
= build_path_from_dentry(direntry
);
2126 if (full_path
== NULL
) {
2133 * Attempt to flush data before changing attributes. We need to do
2134 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2135 * ownership or mode then we may also need to do this. Here, we take
2136 * the safe way out and just do the flush on all setattr requests. If
2137 * the flush returns error, store it to report later and continue.
2139 * BB: This should be smarter. Why bother flushing pages that
2140 * will be truncated anyway? Also, should we error out here if
2141 * the flush returns error?
2143 rc
= filemap_write_and_wait(inode
->i_mapping
);
2144 mapping_set_error(inode
->i_mapping
, rc
);
2147 if (attrs
->ia_valid
& ATTR_SIZE
) {
2148 rc
= cifs_set_file_size(inode
, attrs
, xid
, full_path
);
2150 goto cifs_setattr_exit
;
2153 if (attrs
->ia_valid
& ATTR_UID
)
2154 uid
= attrs
->ia_uid
;
2156 if (attrs
->ia_valid
& ATTR_GID
)
2157 gid
= attrs
->ia_gid
;
2159 #ifdef CONFIG_CIFS_ACL
2160 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) {
2161 if (uid
!= NO_CHANGE_32
|| gid
!= NO_CHANGE_32
) {
2162 rc
= id_mode_to_cifs_acl(inode
, full_path
, NO_CHANGE_64
,
2165 cFYI(1, "%s: Setting id failed with error: %d",
2167 goto cifs_setattr_exit
;
2171 #endif /* CONFIG_CIFS_ACL */
2172 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SET_UID
))
2173 attrs
->ia_valid
&= ~(ATTR_UID
| ATTR_GID
);
2175 /* skip mode change if it's just for clearing setuid/setgid */
2176 if (attrs
->ia_valid
& (ATTR_KILL_SUID
|ATTR_KILL_SGID
))
2177 attrs
->ia_valid
&= ~ATTR_MODE
;
2179 if (attrs
->ia_valid
& ATTR_MODE
) {
2180 mode
= attrs
->ia_mode
;
2182 #ifdef CONFIG_CIFS_ACL
2183 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) {
2184 rc
= id_mode_to_cifs_acl(inode
, full_path
, mode
,
2185 NO_CHANGE_32
, NO_CHANGE_32
);
2187 cFYI(1, "%s: Setting ACL failed with error: %d",
2189 goto cifs_setattr_exit
;
2192 #endif /* CONFIG_CIFS_ACL */
2193 if (((mode
& S_IWUGO
) == 0) &&
2194 (cifsInode
->cifsAttrs
& ATTR_READONLY
) == 0) {
2196 dosattr
= cifsInode
->cifsAttrs
| ATTR_READONLY
;
2198 /* fix up mode if we're not using dynperm */
2199 if ((cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
) == 0)
2200 attrs
->ia_mode
= inode
->i_mode
& ~S_IWUGO
;
2201 } else if ((mode
& S_IWUGO
) &&
2202 (cifsInode
->cifsAttrs
& ATTR_READONLY
)) {
2204 dosattr
= cifsInode
->cifsAttrs
& ~ATTR_READONLY
;
2205 /* Attributes of 0 are ignored */
2207 dosattr
|= ATTR_NORMAL
;
2209 /* reset local inode permissions to normal */
2210 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
)) {
2211 attrs
->ia_mode
&= ~(S_IALLUGO
);
2212 if (S_ISDIR(inode
->i_mode
))
2214 cifs_sb
->mnt_dir_mode
;
2217 cifs_sb
->mnt_file_mode
;
2219 } else if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
)) {
2220 /* ignore mode change - ATTR_READONLY hasn't changed */
2221 attrs
->ia_valid
&= ~ATTR_MODE
;
2225 if (attrs
->ia_valid
& (ATTR_MTIME
|ATTR_ATIME
|ATTR_CTIME
) ||
2226 ((attrs
->ia_valid
& ATTR_MODE
) && dosattr
)) {
2227 rc
= cifs_set_file_info(inode
, attrs
, xid
, full_path
, dosattr
);
2228 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2230 /* Even if error on time set, no sense failing the call if
2231 the server would set the time to a reasonable value anyway,
2232 and this check ensures that we are not being called from
2233 sys_utimes in which case we ought to fail the call back to
2234 the user when the server rejects the call */
2235 if ((rc
) && (attrs
->ia_valid
&
2236 (ATTR_MODE
| ATTR_GID
| ATTR_UID
| ATTR_SIZE
)))
2240 /* do not need local check to inode_check_ok since the server does
2243 goto cifs_setattr_exit
;
2245 if ((attrs
->ia_valid
& ATTR_SIZE
) &&
2246 attrs
->ia_size
!= i_size_read(inode
))
2247 truncate_setsize(inode
, attrs
->ia_size
);
2249 setattr_copy(inode
, attrs
);
2250 mark_inode_dirty(inode
);
2259 cifs_setattr(struct dentry
*direntry
, struct iattr
*attrs
)
2261 struct inode
*inode
= direntry
->d_inode
;
2262 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2263 struct cifs_tcon
*pTcon
= cifs_sb_master_tcon(cifs_sb
);
2265 if (pTcon
->unix_ext
)
2266 return cifs_setattr_unix(direntry
, attrs
);
2268 return cifs_setattr_nounix(direntry
, attrs
);
2270 /* BB: add cifs_setattr_legacy for really old servers */
2274 void cifs_delete_inode(struct inode
*inode
)
2276 cFYI(1, "In cifs_delete_inode, inode = 0x%p", inode
);
2277 /* may have to add back in if and when safe distributed caching of
2278 directories added e.g. via FindNotify */