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 fattr
->cf_uid
= cifs_sb
->mnt_uid
;
248 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_UID
)) {
249 u64 id
= le64_to_cpu(info
->Uid
);
250 if (id
< ((uid_t
)-1)) {
251 kuid_t uid
= make_kuid(&init_user_ns
, id
);
257 fattr
->cf_gid
= cifs_sb
->mnt_gid
;
258 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_GID
)) {
259 u64 id
= le64_to_cpu(info
->Gid
);
260 if (id
< ((gid_t
)-1)) {
261 kgid_t gid
= make_kgid(&init_user_ns
, id
);
267 fattr
->cf_nlink
= le64_to_cpu(info
->Nlinks
);
271 * Fill a cifs_fattr struct with fake inode info.
273 * Needed to setup cifs_fattr data for the directory which is the
274 * junction to the new submount (ie to setup the fake directory
275 * which represents a DFS referral).
278 cifs_create_dfs_fattr(struct cifs_fattr
*fattr
, struct super_block
*sb
)
280 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
282 cFYI(1, "creating fake fattr for DFS referral");
284 memset(fattr
, 0, sizeof(*fattr
));
285 fattr
->cf_mode
= S_IFDIR
| S_IXUGO
| S_IRWXU
;
286 fattr
->cf_uid
= cifs_sb
->mnt_uid
;
287 fattr
->cf_gid
= cifs_sb
->mnt_gid
;
288 fattr
->cf_atime
= CURRENT_TIME
;
289 fattr
->cf_ctime
= CURRENT_TIME
;
290 fattr
->cf_mtime
= CURRENT_TIME
;
292 fattr
->cf_flags
|= CIFS_FATTR_DFS_REFERRAL
;
296 cifs_get_file_info_unix(struct file
*filp
)
300 FILE_UNIX_BASIC_INFO find_data
;
301 struct cifs_fattr fattr
;
302 struct inode
*inode
= file_inode(filp
);
303 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
304 struct cifsFileInfo
*cfile
= filp
->private_data
;
305 struct cifs_tcon
*tcon
= tlink_tcon(cfile
->tlink
);
308 rc
= CIFSSMBUnixQFileInfo(xid
, tcon
, cfile
->fid
.netfid
, &find_data
);
310 cifs_unix_basic_to_fattr(&fattr
, &find_data
, cifs_sb
);
311 } else if (rc
== -EREMOTE
) {
312 cifs_create_dfs_fattr(&fattr
, inode
->i_sb
);
316 cifs_fattr_to_inode(inode
, &fattr
);
321 int cifs_get_inode_info_unix(struct inode
**pinode
,
322 const unsigned char *full_path
,
323 struct super_block
*sb
, unsigned int xid
)
326 FILE_UNIX_BASIC_INFO find_data
;
327 struct cifs_fattr fattr
;
328 struct cifs_tcon
*tcon
;
329 struct tcon_link
*tlink
;
330 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
332 cFYI(1, "Getting info on %s", full_path
);
334 tlink
= cifs_sb_tlink(cifs_sb
);
336 return PTR_ERR(tlink
);
337 tcon
= tlink_tcon(tlink
);
339 /* could have done a find first instead but this returns more info */
340 rc
= CIFSSMBUnixQPathInfo(xid
, tcon
, full_path
, &find_data
,
341 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
342 CIFS_MOUNT_MAP_SPECIAL_CHR
);
343 cifs_put_tlink(tlink
);
346 cifs_unix_basic_to_fattr(&fattr
, &find_data
, cifs_sb
);
347 } else if (rc
== -EREMOTE
) {
348 cifs_create_dfs_fattr(&fattr
, sb
);
354 /* check for Minshall+French symlinks */
355 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MF_SYMLINKS
) {
356 int tmprc
= CIFSCheckMFSymlink(&fattr
, full_path
, cifs_sb
, xid
);
358 cFYI(1, "CIFSCheckMFSymlink: %d", tmprc
);
361 if (*pinode
== NULL
) {
363 cifs_fill_uniqueid(sb
, &fattr
);
364 *pinode
= cifs_iget(sb
, &fattr
);
368 /* we already have inode, update it */
369 cifs_fattr_to_inode(*pinode
, &fattr
);
376 cifs_sfu_type(struct cifs_fattr
*fattr
, const unsigned char *path
,
377 struct cifs_sb_info
*cifs_sb
, unsigned int xid
)
382 struct tcon_link
*tlink
;
383 struct cifs_tcon
*tcon
;
384 struct cifs_io_parms io_parms
;
386 unsigned int bytes_read
;
391 fattr
->cf_mode
&= ~S_IFMT
;
393 if (fattr
->cf_eof
== 0) {
394 fattr
->cf_mode
|= S_IFIFO
;
395 fattr
->cf_dtype
= DT_FIFO
;
397 } else if (fattr
->cf_eof
< 8) {
398 fattr
->cf_mode
|= S_IFREG
;
399 fattr
->cf_dtype
= DT_REG
;
400 return -EINVAL
; /* EOPNOTSUPP? */
403 tlink
= cifs_sb_tlink(cifs_sb
);
405 return PTR_ERR(tlink
);
406 tcon
= tlink_tcon(tlink
);
408 rc
= CIFSSMBOpen(xid
, tcon
, path
, FILE_OPEN
, GENERIC_READ
,
409 CREATE_NOT_DIR
, &netfid
, &oplock
, NULL
,
411 cifs_sb
->mnt_cifs_flags
&
412 CIFS_MOUNT_MAP_SPECIAL_CHR
);
414 int buf_type
= CIFS_NO_BUFFER
;
416 io_parms
.netfid
= netfid
;
417 io_parms
.pid
= current
->tgid
;
418 io_parms
.tcon
= tcon
;
420 io_parms
.length
= 24;
421 rc
= CIFSSMBRead(xid
, &io_parms
, &bytes_read
, &pbuf
,
423 if ((rc
== 0) && (bytes_read
>= 8)) {
424 if (memcmp("IntxBLK", pbuf
, 8) == 0) {
425 cFYI(1, "Block device");
426 fattr
->cf_mode
|= S_IFBLK
;
427 fattr
->cf_dtype
= DT_BLK
;
428 if (bytes_read
== 24) {
429 /* we have enough to decode dev num */
430 __u64 mjr
; /* major */
431 __u64 mnr
; /* minor */
432 mjr
= le64_to_cpu(*(__le64
*)(pbuf
+8));
433 mnr
= le64_to_cpu(*(__le64
*)(pbuf
+16));
434 fattr
->cf_rdev
= MKDEV(mjr
, mnr
);
436 } else if (memcmp("IntxCHR", pbuf
, 8) == 0) {
437 cFYI(1, "Char device");
438 fattr
->cf_mode
|= S_IFCHR
;
439 fattr
->cf_dtype
= DT_CHR
;
440 if (bytes_read
== 24) {
441 /* we have enough to decode dev num */
442 __u64 mjr
; /* major */
443 __u64 mnr
; /* minor */
444 mjr
= le64_to_cpu(*(__le64
*)(pbuf
+8));
445 mnr
= le64_to_cpu(*(__le64
*)(pbuf
+16));
446 fattr
->cf_rdev
= MKDEV(mjr
, mnr
);
448 } else if (memcmp("IntxLNK", pbuf
, 7) == 0) {
450 fattr
->cf_mode
|= S_IFLNK
;
451 fattr
->cf_dtype
= DT_LNK
;
453 fattr
->cf_mode
|= S_IFREG
; /* file? */
454 fattr
->cf_dtype
= DT_REG
;
458 fattr
->cf_mode
|= S_IFREG
; /* then it is a file */
459 fattr
->cf_dtype
= DT_REG
;
460 rc
= -EOPNOTSUPP
; /* or some unknown SFU type */
462 CIFSSMBClose(xid
, tcon
, netfid
);
464 cifs_put_tlink(tlink
);
468 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
471 * Fetch mode bits as provided by SFU.
473 * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ?
475 static int cifs_sfu_mode(struct cifs_fattr
*fattr
, const unsigned char *path
,
476 struct cifs_sb_info
*cifs_sb
, unsigned int xid
)
478 #ifdef CONFIG_CIFS_XATTR
482 struct tcon_link
*tlink
;
483 struct cifs_tcon
*tcon
;
485 tlink
= cifs_sb_tlink(cifs_sb
);
487 return PTR_ERR(tlink
);
488 tcon
= tlink_tcon(tlink
);
490 rc
= CIFSSMBQAllEAs(xid
, tcon
, path
, "SETFILEBITS",
491 ea_value
, 4 /* size of buf */, cifs_sb
->local_nls
,
492 cifs_sb
->mnt_cifs_flags
&
493 CIFS_MOUNT_MAP_SPECIAL_CHR
);
494 cifs_put_tlink(tlink
);
498 mode
= le32_to_cpu(*((__le32
*)ea_value
));
499 fattr
->cf_mode
&= ~SFBITS_MASK
;
500 cFYI(1, "special bits 0%o org mode 0%o", mode
,
502 fattr
->cf_mode
= (mode
& SFBITS_MASK
) | fattr
->cf_mode
;
503 cFYI(1, "special mode bits 0%o", mode
);
512 /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
514 cifs_all_info_to_fattr(struct cifs_fattr
*fattr
, FILE_ALL_INFO
*info
,
515 struct cifs_sb_info
*cifs_sb
, bool adjust_tz
)
517 struct cifs_tcon
*tcon
= cifs_sb_master_tcon(cifs_sb
);
519 memset(fattr
, 0, sizeof(*fattr
));
520 fattr
->cf_cifsattrs
= le32_to_cpu(info
->Attributes
);
521 if (info
->DeletePending
)
522 fattr
->cf_flags
|= CIFS_FATTR_DELETE_PENDING
;
524 if (info
->LastAccessTime
)
525 fattr
->cf_atime
= cifs_NTtimeToUnix(info
->LastAccessTime
);
527 fattr
->cf_atime
= CURRENT_TIME
;
529 fattr
->cf_ctime
= cifs_NTtimeToUnix(info
->ChangeTime
);
530 fattr
->cf_mtime
= cifs_NTtimeToUnix(info
->LastWriteTime
);
533 fattr
->cf_ctime
.tv_sec
+= tcon
->ses
->server
->timeAdj
;
534 fattr
->cf_mtime
.tv_sec
+= tcon
->ses
->server
->timeAdj
;
537 fattr
->cf_eof
= le64_to_cpu(info
->EndOfFile
);
538 fattr
->cf_bytes
= le64_to_cpu(info
->AllocationSize
);
539 fattr
->cf_createtime
= le64_to_cpu(info
->CreationTime
);
541 if (fattr
->cf_cifsattrs
& ATTR_DIRECTORY
) {
542 fattr
->cf_mode
= S_IFDIR
| cifs_sb
->mnt_dir_mode
;
543 fattr
->cf_dtype
= DT_DIR
;
545 * Server can return wrong NumberOfLinks value for directories
546 * when Unix extensions are disabled - fake it.
550 fattr
->cf_mode
= S_IFREG
| cifs_sb
->mnt_file_mode
;
551 fattr
->cf_dtype
= DT_REG
;
553 /* clear write bits if ATTR_READONLY is set */
554 if (fattr
->cf_cifsattrs
& ATTR_READONLY
)
555 fattr
->cf_mode
&= ~(S_IWUGO
);
557 fattr
->cf_nlink
= le32_to_cpu(info
->NumberOfLinks
);
560 fattr
->cf_uid
= cifs_sb
->mnt_uid
;
561 fattr
->cf_gid
= cifs_sb
->mnt_gid
;
565 cifs_get_file_info(struct file
*filp
)
569 FILE_ALL_INFO find_data
;
570 struct cifs_fattr fattr
;
571 struct inode
*inode
= file_inode(filp
);
572 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
573 struct cifsFileInfo
*cfile
= filp
->private_data
;
574 struct cifs_tcon
*tcon
= tlink_tcon(cfile
->tlink
);
575 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
577 if (!server
->ops
->query_file_info
)
581 rc
= server
->ops
->query_file_info(xid
, tcon
, &cfile
->fid
, &find_data
);
584 cifs_all_info_to_fattr(&fattr
, &find_data
, cifs_sb
, false);
587 cifs_create_dfs_fattr(&fattr
, inode
->i_sb
);
593 * FIXME: legacy server -- fall back to path-based call?
594 * for now, just skip revalidating and mark inode for
598 CIFS_I(inode
)->time
= 0;
604 * don't bother with SFU junk here -- just mark inode as needing
607 fattr
.cf_uniqueid
= CIFS_I(inode
)->uniqueid
;
608 fattr
.cf_flags
|= CIFS_FATTR_NEED_REVAL
;
609 cifs_fattr_to_inode(inode
, &fattr
);
616 cifs_get_inode_info(struct inode
**inode
, const char *full_path
,
617 FILE_ALL_INFO
*data
, struct super_block
*sb
, int xid
,
620 bool validinum
= false;
622 int rc
= 0, tmprc
= ENOSYS
;
623 struct cifs_tcon
*tcon
;
624 struct TCP_Server_Info
*server
;
625 struct tcon_link
*tlink
;
626 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
628 bool adjust_tz
= false;
629 struct cifs_fattr fattr
;
630 struct cifs_search_info
*srchinf
= NULL
;
632 tlink
= cifs_sb_tlink(cifs_sb
);
634 return PTR_ERR(tlink
);
635 tcon
= tlink_tcon(tlink
);
636 server
= tcon
->ses
->server
;
638 cFYI(1, "Getting info on %s", full_path
);
640 if ((data
== NULL
) && (*inode
!= NULL
)) {
641 if (CIFS_I(*inode
)->clientCanCacheRead
) {
642 cFYI(1, "No need to revalidate cached inode sizes");
647 /* if inode info is not passed, get it from server */
649 if (!server
->ops
->query_path_info
) {
653 buf
= kmalloc(sizeof(FILE_ALL_INFO
), GFP_KERNEL
);
658 data
= (FILE_ALL_INFO
*)buf
;
659 rc
= server
->ops
->query_path_info(xid
, tcon
, cifs_sb
, full_path
,
664 cifs_all_info_to_fattr(&fattr
, (FILE_ALL_INFO
*)data
, cifs_sb
,
666 } else if (rc
== -EREMOTE
) {
667 cifs_create_dfs_fattr(&fattr
, sb
);
669 } else if (rc
== -EACCES
&& backup_cred(cifs_sb
)) {
670 srchinf
= kzalloc(sizeof(struct cifs_search_info
),
672 if (srchinf
== NULL
) {
677 srchinf
->endOfSearch
= false;
678 srchinf
->info_level
= SMB_FIND_FILE_ID_FULL_DIR_INFO
;
680 srchflgs
= CIFS_SEARCH_CLOSE_ALWAYS
|
681 CIFS_SEARCH_CLOSE_AT_END
|
682 CIFS_SEARCH_BACKUP_SEARCH
;
684 rc
= CIFSFindFirst(xid
, tcon
, full_path
,
685 cifs_sb
, NULL
, srchflgs
, srchinf
, false);
688 (FILE_ALL_INFO
*)srchinf
->srch_entries_start
;
690 cifs_dir_info_to_fattr(&fattr
,
691 (FILE_DIRECTORY_INFO
*)data
, cifs_sb
);
692 fattr
.cf_uniqueid
= le64_to_cpu(
693 ((SEARCH_ID_FULL_DIR_INFO
*)data
)->UniqueId
);
696 cifs_buf_release(srchinf
->ntwrk_buf_start
);
703 * If an inode wasn't passed in, then get the inode number
705 * Is an i_ino of zero legal? Can we use that to check if the server
706 * supports returning inode numbers? Are there other sanity checks we
707 * can use to ensure that the server is really filling in that field?
709 if (*inode
== NULL
) {
710 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
) {
711 if (validinum
== false) {
712 if (server
->ops
->get_srv_inum
)
713 tmprc
= server
->ops
->get_srv_inum(xid
,
714 tcon
, cifs_sb
, full_path
,
715 &fattr
.cf_uniqueid
, data
);
717 cFYI(1, "GetSrvInodeNum rc %d", tmprc
);
718 fattr
.cf_uniqueid
= iunique(sb
, ROOT_I
);
719 cifs_autodisable_serverino(cifs_sb
);
723 fattr
.cf_uniqueid
= iunique(sb
, ROOT_I
);
725 fattr
.cf_uniqueid
= CIFS_I(*inode
)->uniqueid
;
727 /* query for SFU type info if supported and needed */
728 if (fattr
.cf_cifsattrs
& ATTR_SYSTEM
&&
729 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
) {
730 tmprc
= cifs_sfu_type(&fattr
, full_path
, cifs_sb
, xid
);
732 cFYI(1, "cifs_sfu_type failed: %d", tmprc
);
735 #ifdef CONFIG_CIFS_ACL
736 /* fill in 0777 bits from ACL */
737 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) {
738 rc
= cifs_acl_to_fattr(cifs_sb
, &fattr
, *inode
, full_path
, fid
);
740 cFYI(1, "%s: Getting ACL failed with error: %d",
745 #endif /* CONFIG_CIFS_ACL */
747 /* fill in remaining high mode bits e.g. SUID, VTX */
748 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_UNX_EMUL
)
749 cifs_sfu_mode(&fattr
, full_path
, cifs_sb
, xid
);
751 /* check for Minshall+French symlinks */
752 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MF_SYMLINKS
) {
753 tmprc
= CIFSCheckMFSymlink(&fattr
, full_path
, cifs_sb
, xid
);
755 cFYI(1, "CIFSCheckMFSymlink: %d", tmprc
);
759 *inode
= cifs_iget(sb
, &fattr
);
763 cifs_fattr_to_inode(*inode
, &fattr
);
768 cifs_put_tlink(tlink
);
772 static const struct inode_operations cifs_ipc_inode_ops
= {
773 .lookup
= cifs_lookup
,
777 cifs_find_inode(struct inode
*inode
, void *opaque
)
779 struct cifs_fattr
*fattr
= (struct cifs_fattr
*) opaque
;
781 /* don't match inode with different uniqueid */
782 if (CIFS_I(inode
)->uniqueid
!= fattr
->cf_uniqueid
)
785 /* use createtime like an i_generation field */
786 if (CIFS_I(inode
)->createtime
!= fattr
->cf_createtime
)
789 /* don't match inode of different type */
790 if ((inode
->i_mode
& S_IFMT
) != (fattr
->cf_mode
& S_IFMT
))
793 /* if it's not a directory or has no dentries, then flag it */
794 if (S_ISDIR(inode
->i_mode
) && !hlist_empty(&inode
->i_dentry
))
795 fattr
->cf_flags
|= CIFS_FATTR_INO_COLLISION
;
801 cifs_init_inode(struct inode
*inode
, void *opaque
)
803 struct cifs_fattr
*fattr
= (struct cifs_fattr
*) opaque
;
805 CIFS_I(inode
)->uniqueid
= fattr
->cf_uniqueid
;
806 CIFS_I(inode
)->createtime
= fattr
->cf_createtime
;
811 * walk dentry list for an inode and report whether it has aliases that
812 * are hashed. We use this to determine if a directory inode can actually
816 inode_has_hashed_dentries(struct inode
*inode
)
818 struct dentry
*dentry
;
820 spin_lock(&inode
->i_lock
);
821 hlist_for_each_entry(dentry
, &inode
->i_dentry
, d_alias
) {
822 if (!d_unhashed(dentry
) || IS_ROOT(dentry
)) {
823 spin_unlock(&inode
->i_lock
);
827 spin_unlock(&inode
->i_lock
);
831 /* Given fattrs, get a corresponding inode */
833 cifs_iget(struct super_block
*sb
, struct cifs_fattr
*fattr
)
839 cFYI(1, "looking for uniqueid=%llu", fattr
->cf_uniqueid
);
841 /* hash down to 32-bits on 32-bit arch */
842 hash
= cifs_uniqueid_to_ino_t(fattr
->cf_uniqueid
);
844 inode
= iget5_locked(sb
, hash
, cifs_find_inode
, cifs_init_inode
, fattr
);
846 /* was there a potentially problematic inode collision? */
847 if (fattr
->cf_flags
& CIFS_FATTR_INO_COLLISION
) {
848 fattr
->cf_flags
&= ~CIFS_FATTR_INO_COLLISION
;
850 if (inode_has_hashed_dentries(inode
)) {
851 cifs_autodisable_serverino(CIFS_SB(sb
));
853 fattr
->cf_uniqueid
= iunique(sb
, ROOT_I
);
854 goto retry_iget5_locked
;
858 cifs_fattr_to_inode(inode
, fattr
);
859 if (sb
->s_flags
& MS_NOATIME
)
860 inode
->i_flags
|= S_NOATIME
| S_NOCMTIME
;
861 if (inode
->i_state
& I_NEW
) {
863 if (S_ISREG(inode
->i_mode
))
864 inode
->i_data
.backing_dev_info
= sb
->s_bdi
;
865 #ifdef CONFIG_CIFS_FSCACHE
866 /* initialize per-inode cache cookie pointer */
867 CIFS_I(inode
)->fscache
= NULL
;
869 unlock_new_inode(inode
);
876 /* gets root inode */
877 struct inode
*cifs_root_iget(struct super_block
*sb
)
880 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
881 struct inode
*inode
= NULL
;
883 struct cifs_tcon
*tcon
= cifs_sb_master_tcon(cifs_sb
);
887 rc
= cifs_get_inode_info_unix(&inode
, "", sb
, xid
);
889 rc
= cifs_get_inode_info(&inode
, "", NULL
, sb
, xid
, NULL
);
896 #ifdef CONFIG_CIFS_FSCACHE
897 /* populate tcon->resource_id */
898 tcon
->resource_id
= CIFS_I(inode
)->uniqueid
;
901 if (rc
&& tcon
->ipc
) {
902 cFYI(1, "ipc connection - fake read inode");
903 spin_lock(&inode
->i_lock
);
904 inode
->i_mode
|= S_IFDIR
;
906 inode
->i_op
= &cifs_ipc_inode_ops
;
907 inode
->i_fop
= &simple_dir_operations
;
908 inode
->i_uid
= cifs_sb
->mnt_uid
;
909 inode
->i_gid
= cifs_sb
->mnt_gid
;
910 spin_unlock(&inode
->i_lock
);
917 /* can not call macro free_xid here since in a void func
918 * TODO: This is no longer true
925 cifs_set_file_info(struct inode
*inode
, struct iattr
*attrs
, unsigned int xid
,
926 char *full_path
, __u32 dosattr
)
928 bool set_time
= false;
929 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
930 struct TCP_Server_Info
*server
;
931 FILE_BASIC_INFO info_buf
;
936 server
= cifs_sb_master_tcon(cifs_sb
)->ses
->server
;
937 if (!server
->ops
->set_file_info
)
940 if (attrs
->ia_valid
& ATTR_ATIME
) {
942 info_buf
.LastAccessTime
=
943 cpu_to_le64(cifs_UnixTimeToNT(attrs
->ia_atime
));
945 info_buf
.LastAccessTime
= 0;
947 if (attrs
->ia_valid
& ATTR_MTIME
) {
949 info_buf
.LastWriteTime
=
950 cpu_to_le64(cifs_UnixTimeToNT(attrs
->ia_mtime
));
952 info_buf
.LastWriteTime
= 0;
955 * Samba throws this field away, but windows may actually use it.
956 * Do not set ctime unless other time stamps are changed explicitly
957 * (i.e. by utimes()) since we would then have a mix of client and
960 if (set_time
&& (attrs
->ia_valid
& ATTR_CTIME
)) {
961 cFYI(1, "CIFS - CTIME changed");
962 info_buf
.ChangeTime
=
963 cpu_to_le64(cifs_UnixTimeToNT(attrs
->ia_ctime
));
965 info_buf
.ChangeTime
= 0;
967 info_buf
.CreationTime
= 0; /* don't change */
968 info_buf
.Attributes
= cpu_to_le32(dosattr
);
970 return server
->ops
->set_file_info(inode
, full_path
, &info_buf
, xid
);
974 * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
975 * and rename it to a random name that hopefully won't conflict with
979 cifs_rename_pending_delete(const char *full_path
, struct dentry
*dentry
,
980 const unsigned int xid
)
985 struct inode
*inode
= dentry
->d_inode
;
986 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
987 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
988 struct tcon_link
*tlink
;
989 struct cifs_tcon
*tcon
;
990 __u32 dosattr
, origattr
;
991 FILE_BASIC_INFO
*info_buf
= NULL
;
993 tlink
= cifs_sb_tlink(cifs_sb
);
995 return PTR_ERR(tlink
);
996 tcon
= tlink_tcon(tlink
);
998 rc
= CIFSSMBOpen(xid
, tcon
, full_path
, FILE_OPEN
,
999 DELETE
|FILE_WRITE_ATTRIBUTES
, CREATE_NOT_DIR
,
1000 &netfid
, &oplock
, NULL
, cifs_sb
->local_nls
,
1001 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR
);
1005 origattr
= cifsInode
->cifsAttrs
;
1007 origattr
|= ATTR_NORMAL
;
1009 dosattr
= origattr
& ~ATTR_READONLY
;
1011 dosattr
|= ATTR_NORMAL
;
1012 dosattr
|= ATTR_HIDDEN
;
1014 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1015 if (dosattr
!= origattr
) {
1016 info_buf
= kzalloc(sizeof(*info_buf
), GFP_KERNEL
);
1017 if (info_buf
== NULL
) {
1021 info_buf
->Attributes
= cpu_to_le32(dosattr
);
1022 rc
= CIFSSMBSetFileInfo(xid
, tcon
, info_buf
, netfid
,
1024 /* although we would like to mark the file hidden
1025 if that fails we will still try to rename it */
1027 cifsInode
->cifsAttrs
= dosattr
;
1029 dosattr
= origattr
; /* since not able to change them */
1032 /* rename the file */
1033 rc
= CIFSSMBRenameOpenFile(xid
, tcon
, netfid
, NULL
, cifs_sb
->local_nls
,
1034 cifs_sb
->mnt_cifs_flags
&
1035 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1041 /* try to set DELETE_ON_CLOSE */
1042 if (!cifsInode
->delete_pending
) {
1043 rc
= CIFSSMBSetFileDisposition(xid
, tcon
, true, netfid
,
1046 * some samba versions return -ENOENT when we try to set the
1047 * file disposition here. Likely a samba bug, but work around
1048 * it for now. This means that some cifsXXX files may hang
1049 * around after they shouldn't.
1051 * BB: remove this hack after more servers have the fix
1059 cifsInode
->delete_pending
= true;
1063 CIFSSMBClose(xid
, tcon
, netfid
);
1066 cifs_put_tlink(tlink
);
1070 * reset everything back to the original state. Don't bother
1071 * dealing with errors here since we can't do anything about
1075 CIFSSMBRenameOpenFile(xid
, tcon
, netfid
, dentry
->d_name
.name
,
1076 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1077 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1079 if (dosattr
!= origattr
) {
1080 info_buf
->Attributes
= cpu_to_le32(origattr
);
1081 if (!CIFSSMBSetFileInfo(xid
, tcon
, info_buf
, netfid
,
1083 cifsInode
->cifsAttrs
= origattr
;
1089 /* copied from fs/nfs/dir.c with small changes */
1091 cifs_drop_nlink(struct inode
*inode
)
1093 spin_lock(&inode
->i_lock
);
1094 if (inode
->i_nlink
> 0)
1096 spin_unlock(&inode
->i_lock
);
1100 * If dentry->d_inode is null (usually meaning the cached dentry
1101 * is a negative dentry) then we would attempt a standard SMB delete, but
1102 * if that fails we can not attempt the fall back mechanisms on EACCESS
1103 * but will return the EACCESS to the caller. Note that the VFS does not call
1104 * unlink on negative dentries currently.
1106 int cifs_unlink(struct inode
*dir
, struct dentry
*dentry
)
1110 char *full_path
= NULL
;
1111 struct inode
*inode
= dentry
->d_inode
;
1112 struct cifsInodeInfo
*cifs_inode
;
1113 struct super_block
*sb
= dir
->i_sb
;
1114 struct cifs_sb_info
*cifs_sb
= CIFS_SB(sb
);
1115 struct tcon_link
*tlink
;
1116 struct cifs_tcon
*tcon
;
1117 struct TCP_Server_Info
*server
;
1118 struct iattr
*attrs
= NULL
;
1119 __u32 dosattr
= 0, origattr
= 0;
1121 cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir
, dentry
);
1123 tlink
= cifs_sb_tlink(cifs_sb
);
1125 return PTR_ERR(tlink
);
1126 tcon
= tlink_tcon(tlink
);
1127 server
= tcon
->ses
->server
;
1131 /* Unlink can be called from rename so we can not take the
1132 * sb->s_vfs_rename_mutex here */
1133 full_path
= build_path_from_dentry(dentry
);
1134 if (full_path
== NULL
) {
1139 if (cap_unix(tcon
->ses
) && (CIFS_UNIX_POSIX_PATH_OPS_CAP
&
1140 le64_to_cpu(tcon
->fsUnixInfo
.Capability
))) {
1141 rc
= CIFSPOSIXDelFile(xid
, tcon
, full_path
,
1142 SMB_POSIX_UNLINK_FILE_TARGET
, cifs_sb
->local_nls
,
1143 cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MAP_SPECIAL_CHR
);
1144 cFYI(1, "posix del rc %d", rc
);
1145 if ((rc
== 0) || (rc
== -ENOENT
))
1146 goto psx_del_no_retry
;
1150 if (!server
->ops
->unlink
) {
1152 goto psx_del_no_retry
;
1155 rc
= server
->ops
->unlink(xid
, tcon
, full_path
, cifs_sb
);
1160 cifs_drop_nlink(inode
);
1161 } else if (rc
== -ENOENT
) {
1163 } else if (rc
== -ETXTBSY
) {
1164 if (server
->ops
->rename_pending_delete
) {
1165 rc
= server
->ops
->rename_pending_delete(full_path
,
1168 cifs_drop_nlink(inode
);
1172 } else if ((rc
== -EACCES
) && (dosattr
== 0) && inode
) {
1173 attrs
= kzalloc(sizeof(*attrs
), GFP_KERNEL
);
1174 if (attrs
== NULL
) {
1179 /* try to reset dos attributes */
1180 cifs_inode
= CIFS_I(inode
);
1181 origattr
= cifs_inode
->cifsAttrs
;
1183 origattr
|= ATTR_NORMAL
;
1184 dosattr
= origattr
& ~ATTR_READONLY
;
1186 dosattr
|= ATTR_NORMAL
;
1187 dosattr
|= ATTR_HIDDEN
;
1189 rc
= cifs_set_file_info(inode
, attrs
, xid
, full_path
, dosattr
);
1193 goto retry_std_delete
;
1196 /* undo the setattr if we errored out and it's needed */
1197 if (rc
!= 0 && dosattr
!= 0)
1198 cifs_set_file_info(inode
, attrs
, xid
, full_path
, origattr
);
1202 cifs_inode
= CIFS_I(inode
);
1203 cifs_inode
->time
= 0; /* will force revalidate to get info
1205 inode
->i_ctime
= current_fs_time(sb
);
1207 dir
->i_ctime
= dir
->i_mtime
= current_fs_time(sb
);
1208 cifs_inode
= CIFS_I(dir
);
1209 CIFS_I(dir
)->time
= 0; /* force revalidate of dir as well */
1214 cifs_put_tlink(tlink
);
1219 cifs_mkdir_qinfo(struct inode
*parent
, struct dentry
*dentry
, umode_t mode
,
1220 const char *full_path
, struct cifs_sb_info
*cifs_sb
,
1221 struct cifs_tcon
*tcon
, const unsigned int xid
)
1224 struct inode
*inode
= NULL
;
1227 rc
= cifs_get_inode_info_unix(&inode
, full_path
, parent
->i_sb
,
1230 rc
= cifs_get_inode_info(&inode
, full_path
, NULL
, parent
->i_sb
,
1237 * setting nlink not necessary except in cases where we failed to get it
1238 * from the server or was set bogus. Also, since this is a brand new
1239 * inode, no need to grab the i_lock before setting the i_nlink.
1241 if (inode
->i_nlink
< 2)
1242 set_nlink(inode
, 2);
1243 mode
&= ~current_umask();
1244 /* must turn on setgid bit if parent dir has it */
1245 if (parent
->i_mode
& S_ISGID
)
1248 if (tcon
->unix_ext
) {
1249 struct cifs_unix_set_info_args args
= {
1251 .ctime
= NO_CHANGE_64
,
1252 .atime
= NO_CHANGE_64
,
1253 .mtime
= NO_CHANGE_64
,
1256 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SET_UID
) {
1257 args
.uid
= current_fsuid();
1258 if (parent
->i_mode
& S_ISGID
)
1259 args
.gid
= parent
->i_gid
;
1261 args
.gid
= current_fsgid();
1263 args
.uid
= INVALID_UID
; /* no change */
1264 args
.gid
= INVALID_GID
; /* no change */
1266 CIFSSMBUnixSetPathInfo(xid
, tcon
, full_path
, &args
,
1268 cifs_sb
->mnt_cifs_flags
&
1269 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1271 struct TCP_Server_Info
*server
= tcon
->ses
->server
;
1272 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) &&
1273 (mode
& S_IWUGO
) == 0 && server
->ops
->mkdir_setinfo
)
1274 server
->ops
->mkdir_setinfo(inode
, full_path
, cifs_sb
,
1276 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
)
1277 inode
->i_mode
= (mode
| S_IFDIR
);
1279 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SET_UID
) {
1280 inode
->i_uid
= current_fsuid();
1281 if (inode
->i_mode
& S_ISGID
)
1282 inode
->i_gid
= parent
->i_gid
;
1284 inode
->i_gid
= current_fsgid();
1287 d_instantiate(dentry
, inode
);
1292 cifs_posix_mkdir(struct inode
*inode
, struct dentry
*dentry
, umode_t mode
,
1293 const char *full_path
, struct cifs_sb_info
*cifs_sb
,
1294 struct cifs_tcon
*tcon
, const unsigned int xid
)
1298 FILE_UNIX_BASIC_INFO
*info
= NULL
;
1299 struct inode
*newinode
= NULL
;
1300 struct cifs_fattr fattr
;
1302 info
= kzalloc(sizeof(FILE_UNIX_BASIC_INFO
), GFP_KERNEL
);
1305 goto posix_mkdir_out
;
1308 mode
&= ~current_umask();
1309 rc
= CIFSPOSIXCreate(xid
, tcon
, SMB_O_DIRECTORY
| SMB_O_CREAT
, mode
,
1310 NULL
/* netfid */, info
, &oplock
, full_path
,
1311 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1312 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1313 if (rc
== -EOPNOTSUPP
)
1314 goto posix_mkdir_out
;
1316 cFYI(1, "posix mkdir returned 0x%x", rc
);
1318 goto posix_mkdir_out
;
1321 if (info
->Type
== cpu_to_le32(-1))
1322 /* no return info, go query for it */
1323 goto posix_mkdir_get_info
;
1325 * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if
1326 * need to set uid/gid.
1329 cifs_unix_basic_to_fattr(&fattr
, info
, cifs_sb
);
1330 cifs_fill_uniqueid(inode
->i_sb
, &fattr
);
1331 newinode
= cifs_iget(inode
->i_sb
, &fattr
);
1333 goto posix_mkdir_get_info
;
1335 d_instantiate(dentry
, newinode
);
1337 #ifdef CONFIG_CIFS_DEBUG2
1338 cFYI(1, "instantiated dentry %p %s to inode %p", dentry
,
1339 dentry
->d_name
.name
, newinode
);
1341 if (newinode
->i_nlink
!= 2)
1342 cFYI(1, "unexpected number of links %d", newinode
->i_nlink
);
1348 posix_mkdir_get_info
:
1349 rc
= cifs_mkdir_qinfo(inode
, dentry
, mode
, full_path
, cifs_sb
, tcon
,
1351 goto posix_mkdir_out
;
1354 int cifs_mkdir(struct inode
*inode
, struct dentry
*direntry
, umode_t mode
)
1358 struct cifs_sb_info
*cifs_sb
;
1359 struct tcon_link
*tlink
;
1360 struct cifs_tcon
*tcon
;
1361 struct TCP_Server_Info
*server
;
1364 cFYI(1, "In cifs_mkdir, mode = 0x%hx inode = 0x%p", mode
, inode
);
1366 cifs_sb
= CIFS_SB(inode
->i_sb
);
1367 tlink
= cifs_sb_tlink(cifs_sb
);
1369 return PTR_ERR(tlink
);
1370 tcon
= tlink_tcon(tlink
);
1374 full_path
= build_path_from_dentry(direntry
);
1375 if (full_path
== NULL
) {
1380 if (cap_unix(tcon
->ses
) && (CIFS_UNIX_POSIX_PATH_OPS_CAP
&
1381 le64_to_cpu(tcon
->fsUnixInfo
.Capability
))) {
1382 rc
= cifs_posix_mkdir(inode
, direntry
, mode
, full_path
, cifs_sb
,
1384 if (rc
!= -EOPNOTSUPP
)
1388 server
= tcon
->ses
->server
;
1390 if (!server
->ops
->mkdir
) {
1395 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1396 rc
= server
->ops
->mkdir(xid
, tcon
, full_path
, cifs_sb
);
1398 cFYI(1, "cifs_mkdir returned 0x%x", rc
);
1403 rc
= cifs_mkdir_qinfo(inode
, direntry
, mode
, full_path
, cifs_sb
, tcon
,
1407 * Force revalidate to get parent dir info when needed since cached
1408 * attributes are invalid now.
1410 CIFS_I(inode
)->time
= 0;
1413 cifs_put_tlink(tlink
);
1417 int cifs_rmdir(struct inode
*inode
, struct dentry
*direntry
)
1421 struct cifs_sb_info
*cifs_sb
;
1422 struct tcon_link
*tlink
;
1423 struct cifs_tcon
*tcon
;
1424 struct TCP_Server_Info
*server
;
1425 char *full_path
= NULL
;
1426 struct cifsInodeInfo
*cifsInode
;
1428 cFYI(1, "cifs_rmdir, inode = 0x%p", inode
);
1432 full_path
= build_path_from_dentry(direntry
);
1433 if (full_path
== NULL
) {
1438 cifs_sb
= CIFS_SB(inode
->i_sb
);
1439 tlink
= cifs_sb_tlink(cifs_sb
);
1440 if (IS_ERR(tlink
)) {
1441 rc
= PTR_ERR(tlink
);
1444 tcon
= tlink_tcon(tlink
);
1445 server
= tcon
->ses
->server
;
1447 if (!server
->ops
->rmdir
) {
1449 cifs_put_tlink(tlink
);
1453 rc
= server
->ops
->rmdir(xid
, tcon
, full_path
, cifs_sb
);
1454 cifs_put_tlink(tlink
);
1457 spin_lock(&direntry
->d_inode
->i_lock
);
1458 i_size_write(direntry
->d_inode
, 0);
1459 clear_nlink(direntry
->d_inode
);
1460 spin_unlock(&direntry
->d_inode
->i_lock
);
1463 cifsInode
= CIFS_I(direntry
->d_inode
);
1464 /* force revalidate to go get info when needed */
1465 cifsInode
->time
= 0;
1467 cifsInode
= CIFS_I(inode
);
1469 * Force revalidate to get parent dir info when needed since cached
1470 * attributes are invalid now.
1472 cifsInode
->time
= 0;
1474 direntry
->d_inode
->i_ctime
= inode
->i_ctime
= inode
->i_mtime
=
1475 current_fs_time(inode
->i_sb
);
1484 cifs_do_rename(const unsigned int xid
, struct dentry
*from_dentry
,
1485 const char *from_path
, struct dentry
*to_dentry
,
1486 const char *to_path
)
1488 struct cifs_sb_info
*cifs_sb
= CIFS_SB(from_dentry
->d_sb
);
1489 struct tcon_link
*tlink
;
1490 struct cifs_tcon
*tcon
;
1491 struct TCP_Server_Info
*server
;
1495 tlink
= cifs_sb_tlink(cifs_sb
);
1497 return PTR_ERR(tlink
);
1498 tcon
= tlink_tcon(tlink
);
1499 server
= tcon
->ses
->server
;
1501 if (!server
->ops
->rename
)
1504 /* try path-based rename first */
1505 rc
= server
->ops
->rename(xid
, tcon
, from_path
, to_path
, cifs_sb
);
1508 * Don't bother with rename by filehandle unless file is busy and
1509 * source. Note that cross directory moves do not work with
1510 * rename by filehandle to various Windows servers.
1512 if (rc
== 0 || rc
!= -ETXTBSY
)
1513 goto do_rename_exit
;
1515 /* open-file renames don't work across directories */
1516 if (to_dentry
->d_parent
!= from_dentry
->d_parent
)
1517 goto do_rename_exit
;
1519 /* open the file to be renamed -- we need DELETE perms */
1520 rc
= CIFSSMBOpen(xid
, tcon
, from_path
, FILE_OPEN
, DELETE
,
1521 CREATE_NOT_DIR
, &srcfid
, &oplock
, NULL
,
1522 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1523 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1525 rc
= CIFSSMBRenameOpenFile(xid
, tcon
, srcfid
,
1526 (const char *) to_dentry
->d_name
.name
,
1527 cifs_sb
->local_nls
, cifs_sb
->mnt_cifs_flags
&
1528 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1529 CIFSSMBClose(xid
, tcon
, srcfid
);
1532 cifs_put_tlink(tlink
);
1537 cifs_rename(struct inode
*source_dir
, struct dentry
*source_dentry
,
1538 struct inode
*target_dir
, struct dentry
*target_dentry
)
1540 char *from_name
= NULL
;
1541 char *to_name
= NULL
;
1542 struct cifs_sb_info
*cifs_sb
;
1543 struct tcon_link
*tlink
;
1544 struct cifs_tcon
*tcon
;
1545 FILE_UNIX_BASIC_INFO
*info_buf_source
= NULL
;
1546 FILE_UNIX_BASIC_INFO
*info_buf_target
;
1550 cifs_sb
= CIFS_SB(source_dir
->i_sb
);
1551 tlink
= cifs_sb_tlink(cifs_sb
);
1553 return PTR_ERR(tlink
);
1554 tcon
= tlink_tcon(tlink
);
1559 * we already have the rename sem so we do not need to
1560 * grab it again here to protect the path integrity
1562 from_name
= build_path_from_dentry(source_dentry
);
1563 if (from_name
== NULL
) {
1565 goto cifs_rename_exit
;
1568 to_name
= build_path_from_dentry(target_dentry
);
1569 if (to_name
== NULL
) {
1571 goto cifs_rename_exit
;
1574 rc
= cifs_do_rename(xid
, source_dentry
, from_name
, target_dentry
,
1577 if (rc
== -EEXIST
&& tcon
->unix_ext
) {
1579 * Are src and dst hardlinks of same inode? We can only tell
1580 * with unix extensions enabled.
1583 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO
),
1585 if (info_buf_source
== NULL
) {
1587 goto cifs_rename_exit
;
1590 info_buf_target
= info_buf_source
+ 1;
1591 tmprc
= CIFSSMBUnixQPathInfo(xid
, tcon
, from_name
,
1594 cifs_sb
->mnt_cifs_flags
&
1595 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1599 tmprc
= CIFSSMBUnixQPathInfo(xid
, tcon
, to_name
,
1602 cifs_sb
->mnt_cifs_flags
&
1603 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1605 if (tmprc
== 0 && (info_buf_source
->UniqueId
==
1606 info_buf_target
->UniqueId
)) {
1607 /* same file, POSIX says that this is a noop */
1609 goto cifs_rename_exit
;
1613 * else ... BB we could add the same check for Windows by
1614 * checking the UniqueId via FILE_INTERNAL_INFO
1618 /* Try unlinking the target dentry if it's not negative */
1619 if (target_dentry
->d_inode
&& (rc
== -EACCES
|| rc
== -EEXIST
)) {
1620 tmprc
= cifs_unlink(target_dir
, target_dentry
);
1622 goto cifs_rename_exit
;
1623 rc
= cifs_do_rename(xid
, source_dentry
, from_name
,
1624 target_dentry
, to_name
);
1628 kfree(info_buf_source
);
1632 cifs_put_tlink(tlink
);
1637 cifs_inode_needs_reval(struct inode
*inode
)
1639 struct cifsInodeInfo
*cifs_i
= CIFS_I(inode
);
1640 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1642 if (cifs_i
->clientCanCacheRead
)
1645 if (!lookupCacheEnabled
)
1648 if (cifs_i
->time
== 0)
1651 if (!time_in_range(jiffies
, cifs_i
->time
,
1652 cifs_i
->time
+ cifs_sb
->actimeo
))
1655 /* hardlinked files w/ noserverino get "special" treatment */
1656 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SERVER_INUM
) &&
1657 S_ISREG(inode
->i_mode
) && inode
->i_nlink
!= 1)
1664 * Zap the cache. Called when invalid_mapping flag is set.
1667 cifs_invalidate_mapping(struct inode
*inode
)
1670 struct cifsInodeInfo
*cifs_i
= CIFS_I(inode
);
1672 cifs_i
->invalid_mapping
= false;
1674 if (inode
->i_mapping
&& inode
->i_mapping
->nrpages
!= 0) {
1675 rc
= invalidate_inode_pages2(inode
->i_mapping
);
1677 cERROR(1, "%s: could not invalidate inode %p", __func__
,
1679 cifs_i
->invalid_mapping
= true;
1683 cifs_fscache_reset_inode_cookie(inode
);
1687 int cifs_revalidate_file_attr(struct file
*filp
)
1690 struct inode
*inode
= file_inode(filp
);
1691 struct cifsFileInfo
*cfile
= (struct cifsFileInfo
*) filp
->private_data
;
1693 if (!cifs_inode_needs_reval(inode
))
1696 if (tlink_tcon(cfile
->tlink
)->unix_ext
)
1697 rc
= cifs_get_file_info_unix(filp
);
1699 rc
= cifs_get_file_info(filp
);
1704 int cifs_revalidate_dentry_attr(struct dentry
*dentry
)
1708 struct inode
*inode
= dentry
->d_inode
;
1709 struct super_block
*sb
= dentry
->d_sb
;
1710 char *full_path
= NULL
;
1715 if (!cifs_inode_needs_reval(inode
))
1720 /* can not safely grab the rename sem here if rename calls revalidate
1721 since that would deadlock */
1722 full_path
= build_path_from_dentry(dentry
);
1723 if (full_path
== NULL
) {
1728 cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time "
1729 "%ld jiffies %ld", full_path
, inode
, inode
->i_count
.counter
,
1730 dentry
, dentry
->d_time
, jiffies
);
1732 if (cifs_sb_master_tcon(CIFS_SB(sb
))->unix_ext
)
1733 rc
= cifs_get_inode_info_unix(&inode
, full_path
, sb
, xid
);
1735 rc
= cifs_get_inode_info(&inode
, full_path
, NULL
, sb
,
1744 int cifs_revalidate_file(struct file
*filp
)
1747 struct inode
*inode
= file_inode(filp
);
1749 rc
= cifs_revalidate_file_attr(filp
);
1753 if (CIFS_I(inode
)->invalid_mapping
)
1754 rc
= cifs_invalidate_mapping(inode
);
1758 /* revalidate a dentry's inode attributes */
1759 int cifs_revalidate_dentry(struct dentry
*dentry
)
1762 struct inode
*inode
= dentry
->d_inode
;
1764 rc
= cifs_revalidate_dentry_attr(dentry
);
1768 if (CIFS_I(inode
)->invalid_mapping
)
1769 rc
= cifs_invalidate_mapping(inode
);
1773 int cifs_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
,
1776 struct cifs_sb_info
*cifs_sb
= CIFS_SB(dentry
->d_sb
);
1777 struct cifs_tcon
*tcon
= cifs_sb_master_tcon(cifs_sb
);
1778 struct inode
*inode
= dentry
->d_inode
;
1782 * We need to be sure that all dirty pages are written and the server
1783 * has actual ctime, mtime and file length.
1785 if (!CIFS_I(inode
)->clientCanCacheRead
&& inode
->i_mapping
&&
1786 inode
->i_mapping
->nrpages
!= 0) {
1787 rc
= filemap_fdatawait(inode
->i_mapping
);
1789 mapping_set_error(inode
->i_mapping
, rc
);
1794 rc
= cifs_revalidate_dentry_attr(dentry
);
1798 generic_fillattr(inode
, stat
);
1799 stat
->blksize
= CIFS_MAX_MSGSIZE
;
1800 stat
->ino
= CIFS_I(inode
)->uniqueid
;
1803 * If on a multiuser mount without unix extensions or cifsacl being
1804 * enabled, and the admin hasn't overridden them, set the ownership
1805 * to the fsuid/fsgid of the current process.
1807 if ((cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_MULTIUSER
) &&
1808 !(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) &&
1810 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_UID
))
1811 stat
->uid
= current_fsuid();
1812 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_OVERR_GID
))
1813 stat
->gid
= current_fsgid();
1818 static int cifs_truncate_page(struct address_space
*mapping
, loff_t from
)
1820 pgoff_t index
= from
>> PAGE_CACHE_SHIFT
;
1821 unsigned offset
= from
& (PAGE_CACHE_SIZE
- 1);
1825 page
= grab_cache_page(mapping
, index
);
1829 zero_user_segment(page
, offset
, PAGE_CACHE_SIZE
);
1831 page_cache_release(page
);
1835 static void cifs_setsize(struct inode
*inode
, loff_t offset
)
1839 spin_lock(&inode
->i_lock
);
1840 oldsize
= inode
->i_size
;
1841 i_size_write(inode
, offset
);
1842 spin_unlock(&inode
->i_lock
);
1844 truncate_pagecache(inode
, oldsize
, offset
);
1848 cifs_set_file_size(struct inode
*inode
, struct iattr
*attrs
,
1849 unsigned int xid
, char *full_path
)
1852 struct cifsFileInfo
*open_file
;
1853 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
1854 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1855 struct tcon_link
*tlink
= NULL
;
1856 struct cifs_tcon
*tcon
= NULL
;
1857 struct TCP_Server_Info
*server
;
1858 struct cifs_io_parms io_parms
;
1861 * To avoid spurious oplock breaks from server, in the case of
1862 * inodes that we already have open, avoid doing path based
1863 * setting of file size if we can do it by handle.
1864 * This keeps our caching token (oplock) and avoids timeouts
1865 * when the local oplock break takes longer to flush
1866 * writebehind data than the SMB timeout for the SetPathInfo
1867 * request would allow
1869 open_file
= find_writable_file(cifsInode
, true);
1871 tcon
= tlink_tcon(open_file
->tlink
);
1872 server
= tcon
->ses
->server
;
1873 if (server
->ops
->set_file_size
)
1874 rc
= server
->ops
->set_file_size(xid
, tcon
, open_file
,
1875 attrs
->ia_size
, false);
1878 cifsFileInfo_put(open_file
);
1879 cFYI(1, "SetFSize for attrs rc = %d", rc
);
1880 if ((rc
== -EINVAL
) || (rc
== -EOPNOTSUPP
)) {
1881 unsigned int bytes_written
;
1883 io_parms
.netfid
= open_file
->fid
.netfid
;
1884 io_parms
.pid
= open_file
->pid
;
1885 io_parms
.tcon
= tcon
;
1886 io_parms
.offset
= 0;
1887 io_parms
.length
= attrs
->ia_size
;
1888 rc
= CIFSSMBWrite(xid
, &io_parms
, &bytes_written
,
1890 cFYI(1, "Wrt seteof rc %d", rc
);
1899 tlink
= cifs_sb_tlink(cifs_sb
);
1901 return PTR_ERR(tlink
);
1902 tcon
= tlink_tcon(tlink
);
1903 server
= tcon
->ses
->server
;
1907 * Set file size by pathname rather than by handle either because no
1908 * valid, writeable file handle for it was found or because there was
1909 * an error setting it by handle.
1911 if (server
->ops
->set_path_size
)
1912 rc
= server
->ops
->set_path_size(xid
, tcon
, full_path
,
1913 attrs
->ia_size
, cifs_sb
, false);
1916 cFYI(1, "SetEOF by path (setattrs) rc = %d", rc
);
1917 if ((rc
== -EINVAL
) || (rc
== -EOPNOTSUPP
)) {
1921 rc
= SMBLegacyOpen(xid
, tcon
, full_path
, FILE_OPEN
,
1922 GENERIC_WRITE
, CREATE_NOT_DIR
, &netfid
,
1923 &oplock
, NULL
, cifs_sb
->local_nls
,
1924 cifs_sb
->mnt_cifs_flags
&
1925 CIFS_MOUNT_MAP_SPECIAL_CHR
);
1927 unsigned int bytes_written
;
1929 io_parms
.netfid
= netfid
;
1930 io_parms
.pid
= current
->tgid
;
1931 io_parms
.tcon
= tcon
;
1932 io_parms
.offset
= 0;
1933 io_parms
.length
= attrs
->ia_size
;
1934 rc
= CIFSSMBWrite(xid
, &io_parms
, &bytes_written
, NULL
,
1936 cFYI(1, "wrt seteof rc %d", rc
);
1937 CIFSSMBClose(xid
, tcon
, netfid
);
1941 cifs_put_tlink(tlink
);
1945 cifsInode
->server_eof
= attrs
->ia_size
;
1946 cifs_setsize(inode
, attrs
->ia_size
);
1947 cifs_truncate_page(inode
->i_mapping
, inode
->i_size
);
1954 cifs_setattr_unix(struct dentry
*direntry
, struct iattr
*attrs
)
1958 char *full_path
= NULL
;
1959 struct inode
*inode
= direntry
->d_inode
;
1960 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
1961 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
1962 struct tcon_link
*tlink
;
1963 struct cifs_tcon
*pTcon
;
1964 struct cifs_unix_set_info_args
*args
= NULL
;
1965 struct cifsFileInfo
*open_file
;
1967 cFYI(1, "setattr_unix on file %s attrs->ia_valid=0x%x",
1968 direntry
->d_name
.name
, attrs
->ia_valid
);
1972 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_NO_PERM
)
1973 attrs
->ia_valid
|= ATTR_FORCE
;
1975 rc
= inode_change_ok(inode
, attrs
);
1979 full_path
= build_path_from_dentry(direntry
);
1980 if (full_path
== NULL
) {
1986 * Attempt to flush data before changing attributes. We need to do
1987 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
1988 * ownership or mode then we may also need to do this. Here, we take
1989 * the safe way out and just do the flush on all setattr requests. If
1990 * the flush returns error, store it to report later and continue.
1992 * BB: This should be smarter. Why bother flushing pages that
1993 * will be truncated anyway? Also, should we error out here if
1994 * the flush returns error?
1996 rc
= filemap_write_and_wait(inode
->i_mapping
);
1997 mapping_set_error(inode
->i_mapping
, rc
);
2000 if (attrs
->ia_valid
& ATTR_SIZE
) {
2001 rc
= cifs_set_file_size(inode
, attrs
, xid
, full_path
);
2006 /* skip mode change if it's just for clearing setuid/setgid */
2007 if (attrs
->ia_valid
& (ATTR_KILL_SUID
|ATTR_KILL_SGID
))
2008 attrs
->ia_valid
&= ~ATTR_MODE
;
2010 args
= kmalloc(sizeof(*args
), GFP_KERNEL
);
2016 /* set up the struct */
2017 if (attrs
->ia_valid
& ATTR_MODE
)
2018 args
->mode
= attrs
->ia_mode
;
2020 args
->mode
= NO_CHANGE_64
;
2022 if (attrs
->ia_valid
& ATTR_UID
)
2023 args
->uid
= attrs
->ia_uid
;
2025 args
->uid
= INVALID_UID
; /* no change */
2027 if (attrs
->ia_valid
& ATTR_GID
)
2028 args
->gid
= attrs
->ia_gid
;
2030 args
->gid
= INVALID_GID
; /* no change */
2032 if (attrs
->ia_valid
& ATTR_ATIME
)
2033 args
->atime
= cifs_UnixTimeToNT(attrs
->ia_atime
);
2035 args
->atime
= NO_CHANGE_64
;
2037 if (attrs
->ia_valid
& ATTR_MTIME
)
2038 args
->mtime
= cifs_UnixTimeToNT(attrs
->ia_mtime
);
2040 args
->mtime
= NO_CHANGE_64
;
2042 if (attrs
->ia_valid
& ATTR_CTIME
)
2043 args
->ctime
= cifs_UnixTimeToNT(attrs
->ia_ctime
);
2045 args
->ctime
= NO_CHANGE_64
;
2048 open_file
= find_writable_file(cifsInode
, true);
2050 u16 nfid
= open_file
->fid
.netfid
;
2051 u32 npid
= open_file
->pid
;
2052 pTcon
= tlink_tcon(open_file
->tlink
);
2053 rc
= CIFSSMBUnixSetFileInfo(xid
, pTcon
, args
, nfid
, npid
);
2054 cifsFileInfo_put(open_file
);
2056 tlink
= cifs_sb_tlink(cifs_sb
);
2057 if (IS_ERR(tlink
)) {
2058 rc
= PTR_ERR(tlink
);
2061 pTcon
= tlink_tcon(tlink
);
2062 rc
= CIFSSMBUnixSetPathInfo(xid
, pTcon
, full_path
, args
,
2064 cifs_sb
->mnt_cifs_flags
&
2065 CIFS_MOUNT_MAP_SPECIAL_CHR
);
2066 cifs_put_tlink(tlink
);
2072 if ((attrs
->ia_valid
& ATTR_SIZE
) &&
2073 attrs
->ia_size
!= i_size_read(inode
))
2074 truncate_setsize(inode
, attrs
->ia_size
);
2076 setattr_copy(inode
, attrs
);
2077 mark_inode_dirty(inode
);
2079 /* force revalidate when any of these times are set since some
2080 of the fs types (eg ext3, fat) do not have fine enough
2081 time granularity to match protocol, and we do not have a
2082 a way (yet) to query the server fs's time granularity (and
2083 whether it rounds times down).
2085 if (attrs
->ia_valid
& (ATTR_MTIME
| ATTR_CTIME
))
2086 cifsInode
->time
= 0;
2095 cifs_setattr_nounix(struct dentry
*direntry
, struct iattr
*attrs
)
2098 kuid_t uid
= INVALID_UID
;
2099 kgid_t gid
= INVALID_GID
;
2100 struct inode
*inode
= direntry
->d_inode
;
2101 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2102 struct cifsInodeInfo
*cifsInode
= CIFS_I(inode
);
2103 char *full_path
= NULL
;
2106 __u64 mode
= NO_CHANGE_64
;
2110 cFYI(1, "setattr on file %s attrs->iavalid 0x%x",
2111 direntry
->d_name
.name
, attrs
->ia_valid
);
2113 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_NO_PERM
)
2114 attrs
->ia_valid
|= ATTR_FORCE
;
2116 rc
= inode_change_ok(inode
, attrs
);
2122 full_path
= build_path_from_dentry(direntry
);
2123 if (full_path
== NULL
) {
2130 * Attempt to flush data before changing attributes. We need to do
2131 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2132 * ownership or mode then we may also need to do this. Here, we take
2133 * the safe way out and just do the flush on all setattr requests. If
2134 * the flush returns error, store it to report later and continue.
2136 * BB: This should be smarter. Why bother flushing pages that
2137 * will be truncated anyway? Also, should we error out here if
2138 * the flush returns error?
2140 rc
= filemap_write_and_wait(inode
->i_mapping
);
2141 mapping_set_error(inode
->i_mapping
, rc
);
2144 if (attrs
->ia_valid
& ATTR_SIZE
) {
2145 rc
= cifs_set_file_size(inode
, attrs
, xid
, full_path
);
2147 goto cifs_setattr_exit
;
2150 if (attrs
->ia_valid
& ATTR_UID
)
2151 uid
= attrs
->ia_uid
;
2153 if (attrs
->ia_valid
& ATTR_GID
)
2154 gid
= attrs
->ia_gid
;
2156 #ifdef CONFIG_CIFS_ACL
2157 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) {
2158 if (uid_valid(uid
) || gid_valid(gid
)) {
2159 rc
= id_mode_to_cifs_acl(inode
, full_path
, NO_CHANGE_64
,
2162 cFYI(1, "%s: Setting id failed with error: %d",
2164 goto cifs_setattr_exit
;
2168 #endif /* CONFIG_CIFS_ACL */
2169 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_SET_UID
))
2170 attrs
->ia_valid
&= ~(ATTR_UID
| ATTR_GID
);
2172 /* skip mode change if it's just for clearing setuid/setgid */
2173 if (attrs
->ia_valid
& (ATTR_KILL_SUID
|ATTR_KILL_SGID
))
2174 attrs
->ia_valid
&= ~ATTR_MODE
;
2176 if (attrs
->ia_valid
& ATTR_MODE
) {
2177 mode
= attrs
->ia_mode
;
2179 #ifdef CONFIG_CIFS_ACL
2180 if (cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_CIFS_ACL
) {
2181 rc
= id_mode_to_cifs_acl(inode
, full_path
, mode
,
2182 INVALID_UID
, INVALID_GID
);
2184 cFYI(1, "%s: Setting ACL failed with error: %d",
2186 goto cifs_setattr_exit
;
2189 #endif /* CONFIG_CIFS_ACL */
2190 if (((mode
& S_IWUGO
) == 0) &&
2191 (cifsInode
->cifsAttrs
& ATTR_READONLY
) == 0) {
2193 dosattr
= cifsInode
->cifsAttrs
| ATTR_READONLY
;
2195 /* fix up mode if we're not using dynperm */
2196 if ((cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
) == 0)
2197 attrs
->ia_mode
= inode
->i_mode
& ~S_IWUGO
;
2198 } else if ((mode
& S_IWUGO
) &&
2199 (cifsInode
->cifsAttrs
& ATTR_READONLY
)) {
2201 dosattr
= cifsInode
->cifsAttrs
& ~ATTR_READONLY
;
2202 /* Attributes of 0 are ignored */
2204 dosattr
|= ATTR_NORMAL
;
2206 /* reset local inode permissions to normal */
2207 if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
)) {
2208 attrs
->ia_mode
&= ~(S_IALLUGO
);
2209 if (S_ISDIR(inode
->i_mode
))
2211 cifs_sb
->mnt_dir_mode
;
2214 cifs_sb
->mnt_file_mode
;
2216 } else if (!(cifs_sb
->mnt_cifs_flags
& CIFS_MOUNT_DYNPERM
)) {
2217 /* ignore mode change - ATTR_READONLY hasn't changed */
2218 attrs
->ia_valid
&= ~ATTR_MODE
;
2222 if (attrs
->ia_valid
& (ATTR_MTIME
|ATTR_ATIME
|ATTR_CTIME
) ||
2223 ((attrs
->ia_valid
& ATTR_MODE
) && dosattr
)) {
2224 rc
= cifs_set_file_info(inode
, attrs
, xid
, full_path
, dosattr
);
2225 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2227 /* Even if error on time set, no sense failing the call if
2228 the server would set the time to a reasonable value anyway,
2229 and this check ensures that we are not being called from
2230 sys_utimes in which case we ought to fail the call back to
2231 the user when the server rejects the call */
2232 if ((rc
) && (attrs
->ia_valid
&
2233 (ATTR_MODE
| ATTR_GID
| ATTR_UID
| ATTR_SIZE
)))
2237 /* do not need local check to inode_check_ok since the server does
2240 goto cifs_setattr_exit
;
2242 if ((attrs
->ia_valid
& ATTR_SIZE
) &&
2243 attrs
->ia_size
!= i_size_read(inode
))
2244 truncate_setsize(inode
, attrs
->ia_size
);
2246 setattr_copy(inode
, attrs
);
2247 mark_inode_dirty(inode
);
2256 cifs_setattr(struct dentry
*direntry
, struct iattr
*attrs
)
2258 struct inode
*inode
= direntry
->d_inode
;
2259 struct cifs_sb_info
*cifs_sb
= CIFS_SB(inode
->i_sb
);
2260 struct cifs_tcon
*pTcon
= cifs_sb_master_tcon(cifs_sb
);
2262 if (pTcon
->unix_ext
)
2263 return cifs_setattr_unix(direntry
, attrs
);
2265 return cifs_setattr_nounix(direntry
, attrs
);
2267 /* BB: add cifs_setattr_legacy for really old servers */
2271 void cifs_delete_inode(struct inode
*inode
)
2273 cFYI(1, "In cifs_delete_inode, inode = 0x%p", inode
);
2274 /* may have to add back in if and when safe distributed caching of
2275 directories added e.g. via FindNotify */