4 * Copyright (C) International Business Machines Corp., 2002,2007
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/pagemap.h>
24 #include <asm/div64.h>
28 #include "cifsproto.h"
29 #include "cifs_debug.h"
30 #include "cifs_fs_sb.h"
33 static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral)
35 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
37 switch (inode->i_mode & S_IFMT) {
39 inode->i_op = &cifs_file_inode_ops;
40 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
41 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
42 inode->i_fop = &cifs_file_direct_nobrl_ops;
44 inode->i_fop = &cifs_file_direct_ops;
45 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
46 inode->i_fop = &cifs_file_nobrl_ops;
47 else { /* not direct, send byte range locks */
48 inode->i_fop = &cifs_file_ops;
52 /* check if server can support readpages */
53 if (cifs_sb->tcon->ses->server->maxBuf <
54 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
55 inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
57 inode->i_data.a_ops = &cifs_addr_ops;
60 #ifdef CONFIG_CIFS_DFS_UPCALL
61 if (is_dfs_referral) {
62 inode->i_op = &cifs_dfs_referral_inode_operations;
64 #else /* NO DFS support, treat as a directory */
67 inode->i_op = &cifs_dir_inode_ops;
68 inode->i_fop = &cifs_dir_ops;
72 inode->i_op = &cifs_symlink_inode_ops;
75 init_special_inode(inode, inode->i_mode, inode->i_rdev);
80 static void cifs_unix_info_to_inode(struct inode *inode,
81 FILE_UNIX_BASIC_INFO *info, int force_uid_gid)
83 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
84 struct cifsInodeInfo *cifsInfo = CIFS_I(inode);
85 __u64 num_of_bytes = le64_to_cpu(info->NumOfBytes);
86 __u64 end_of_file = le64_to_cpu(info->EndOfFile);
88 inode->i_atime = cifs_NTtimeToUnix(le64_to_cpu(info->LastAccessTime));
90 cifs_NTtimeToUnix(le64_to_cpu(info->LastModificationTime));
91 inode->i_ctime = cifs_NTtimeToUnix(le64_to_cpu(info->LastStatusChange));
92 inode->i_mode = le64_to_cpu(info->Permissions);
95 * Since we set the inode type below we need to mask off
96 * to avoid strange results if bits set above.
98 inode->i_mode &= ~S_IFMT;
99 switch (le32_to_cpu(info->Type)) {
101 inode->i_mode |= S_IFREG;
104 inode->i_mode |= S_IFLNK;
107 inode->i_mode |= S_IFDIR;
110 inode->i_mode |= S_IFCHR;
111 inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor),
112 le64_to_cpu(info->DevMinor) & MINORMASK);
115 inode->i_mode |= S_IFBLK;
116 inode->i_rdev = MKDEV(le64_to_cpu(info->DevMajor),
117 le64_to_cpu(info->DevMinor) & MINORMASK);
120 inode->i_mode |= S_IFIFO;
123 inode->i_mode |= S_IFSOCK;
126 /* safest to call it a file if we do not know */
127 inode->i_mode |= S_IFREG;
128 cFYI(1, ("unknown type %d", le32_to_cpu(info->Type)));
132 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) &&
134 inode->i_uid = cifs_sb->mnt_uid;
136 inode->i_uid = le64_to_cpu(info->Uid);
138 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) &&
140 inode->i_gid = cifs_sb->mnt_gid;
142 inode->i_gid = le64_to_cpu(info->Gid);
144 inode->i_nlink = le64_to_cpu(info->Nlinks);
146 spin_lock(&inode->i_lock);
147 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
149 * We can not safely change the file size here if the client
150 * is writing to it due to potential races.
152 i_size_write(inode, end_of_file);
155 * i_blocks is not related to (i_size / i_blksize),
156 * but instead 512 byte (2**9) size is required for
157 * calculating num blocks.
159 inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
161 spin_unlock(&inode->i_lock);
164 int cifs_get_inode_info_unix(struct inode **pinode,
165 const unsigned char *full_path, struct super_block *sb, int xid)
168 FILE_UNIX_BASIC_INFO findData;
169 struct cifsTconInfo *pTcon;
171 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
172 bool is_dfs_referral = false;
174 pTcon = cifs_sb->tcon;
175 cFYI(1, ("Getting info on %s", full_path));
177 try_again_CIFSSMBUnixQPathInfo:
178 /* could have done a find first instead but this returns more info */
179 rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &findData,
180 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
181 CIFS_MOUNT_MAP_SPECIAL_CHR);
182 /* dump_mem("\nUnixQPathInfo return data", &findData,
183 sizeof(findData)); */
185 if (rc == -EREMOTE && !is_dfs_referral) {
186 is_dfs_referral = true;
187 goto try_again_CIFSSMBUnixQPathInfo;
191 struct cifsInodeInfo *cifsInfo;
192 __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
193 __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
196 if (*pinode == NULL) {
197 *pinode = new_inode(sb);
198 if (*pinode == NULL) {
202 /* Is an i_ino of zero legal? */
203 /* Are there sanity checks we can use to ensure that
204 the server is really filling in that field? */
205 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
207 (unsigned long)findData.UniqueId;
208 } /* note ino incremented to unique num in new_inode */
209 if (sb->s_flags & MS_NOATIME)
210 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
212 insert_inode_hash(*pinode);
216 cifsInfo = CIFS_I(inode);
218 cFYI(1, ("Old time %ld", cifsInfo->time));
219 cifsInfo->time = jiffies;
220 cFYI(1, ("New time %ld", cifsInfo->time));
221 /* this is ok to set on every inode revalidate */
222 atomic_set(&cifsInfo->inUse, 1);
224 cifs_unix_info_to_inode(inode, &findData, 0);
227 if (num_of_bytes < end_of_file)
228 cFYI(1, ("allocation size less than end of file"));
229 cFYI(1, ("Size %ld and blocks %llu",
230 (unsigned long) inode->i_size,
231 (unsigned long long)inode->i_blocks));
233 cifs_set_ops(inode, is_dfs_referral);
239 static int decode_sfu_inode(struct inode *inode, __u64 size,
240 const unsigned char *path,
241 struct cifs_sb_info *cifs_sb, int xid)
246 struct cifsTconInfo *pTcon = cifs_sb->tcon;
248 unsigned int bytes_read;
254 inode->i_mode |= S_IFIFO;
256 } else if (size < 8) {
257 return -EINVAL; /* EOPNOTSUPP? */
260 rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
261 CREATE_NOT_DIR, &netfid, &oplock, NULL,
263 cifs_sb->mnt_cifs_flags &
264 CIFS_MOUNT_MAP_SPECIAL_CHR);
266 int buf_type = CIFS_NO_BUFFER;
268 rc = CIFSSMBRead(xid, pTcon,
270 24 /* length */, 0 /* offset */,
271 &bytes_read, &pbuf, &buf_type);
272 if ((rc == 0) && (bytes_read >= 8)) {
273 if (memcmp("IntxBLK", pbuf, 8) == 0) {
274 cFYI(1, ("Block device"));
275 inode->i_mode |= S_IFBLK;
276 if (bytes_read == 24) {
277 /* we have enough to decode dev num */
278 __u64 mjr; /* major */
279 __u64 mnr; /* minor */
280 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
281 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
282 inode->i_rdev = MKDEV(mjr, mnr);
284 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
285 cFYI(1, ("Char device"));
286 inode->i_mode |= S_IFCHR;
287 if (bytes_read == 24) {
288 /* we have enough to decode dev num */
289 __u64 mjr; /* major */
290 __u64 mnr; /* minor */
291 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
292 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
293 inode->i_rdev = MKDEV(mjr, mnr);
295 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
296 cFYI(1, ("Symlink"));
297 inode->i_mode |= S_IFLNK;
299 inode->i_mode |= S_IFREG; /* file? */
303 inode->i_mode |= S_IFREG; /* then it is a file */
304 rc = -EOPNOTSUPP; /* or some unknown SFU type */
306 CIFSSMBClose(xid, pTcon, netfid);
311 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
313 static int get_sfu_mode(struct inode *inode,
314 const unsigned char *path,
315 struct cifs_sb_info *cifs_sb, int xid)
317 #ifdef CONFIG_CIFS_XATTR
322 rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
323 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
324 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
328 mode = le32_to_cpu(*((__le32 *)ea_value));
329 inode->i_mode &= ~SFBITS_MASK;
330 cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode));
331 inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
332 cFYI(1, ("special mode bits 0%o", mode));
342 int cifs_get_inode_info(struct inode **pinode,
343 const unsigned char *full_path, FILE_ALL_INFO *pfindData,
344 struct super_block *sb, int xid, const __u16 *pfid)
347 struct cifsTconInfo *pTcon;
349 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
351 bool adjustTZ = false;
352 bool is_dfs_referral = false;
354 pTcon = cifs_sb->tcon;
355 cFYI(1, ("Getting info on %s", full_path));
357 if ((pfindData == NULL) && (*pinode != NULL)) {
358 if (CIFS_I(*pinode)->clientCanCacheRead) {
359 cFYI(1, ("No need to revalidate cached inode sizes"));
364 /* if file info not passed in then get it from server */
365 if (pfindData == NULL) {
366 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
369 pfindData = (FILE_ALL_INFO *)buf;
371 try_again_CIFSSMBQPathInfo:
372 /* could do find first instead but this returns more info */
373 rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData,
375 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
376 CIFS_MOUNT_MAP_SPECIAL_CHR);
377 /* BB optimize code so we do not make the above call
378 when server claims no NT SMB support and the above call
379 failed at least once - set flag in tcon or mount */
380 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
381 rc = SMBQueryInformation(xid, pTcon, full_path,
382 pfindData, cifs_sb->local_nls,
383 cifs_sb->mnt_cifs_flags &
384 CIFS_MOUNT_MAP_SPECIAL_CHR);
388 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
390 if (rc == -EREMOTE && !is_dfs_referral) {
391 is_dfs_referral = true;
392 goto try_again_CIFSSMBQPathInfo;
396 struct cifsInodeInfo *cifsInfo;
397 __u32 attr = le32_to_cpu(pfindData->Attributes);
400 if (*pinode == NULL) {
401 *pinode = new_inode(sb);
402 if (*pinode == NULL) {
406 /* Is an i_ino of zero legal? Can we use that to check
407 if the server supports returning inode numbers? Are
408 there other sanity checks we can use to ensure that
409 the server is really filling in that field? */
411 /* We can not use the IndexNumber field by default from
412 Windows or Samba (in ALL_INFO buf) but we can request
413 it explicitly. It may not be unique presumably if
414 the server has multiple devices mounted under one
417 /* There may be higher info levels that work but are
418 there Windows server or network appliances for which
419 IndexNumber field is not guaranteed unique? */
421 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
425 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
426 full_path, &inode_num,
428 cifs_sb->mnt_cifs_flags &
429 CIFS_MOUNT_MAP_SPECIAL_CHR);
431 cFYI(1, ("GetSrvInodeNum rc %d", rc1));
432 /* BB EOPNOSUPP disable SERVER_INUM? */
433 } else /* do we need cast or hash to ino? */
434 (*pinode)->i_ino = inode_num;
435 } /* else ino incremented to unique num in new_inode*/
436 if (sb->s_flags & MS_NOATIME)
437 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
438 insert_inode_hash(*pinode);
441 cifsInfo = CIFS_I(inode);
442 cifsInfo->cifsAttrs = attr;
443 cFYI(1, ("Old time %ld", cifsInfo->time));
444 cifsInfo->time = jiffies;
445 cFYI(1, ("New time %ld", cifsInfo->time));
447 /* blksize needs to be multiple of two. So safer to default to
448 blksize and blkbits set in superblock so 2**blkbits and blksize
449 will match rather than setting to:
450 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
452 /* Linux can not store file creation time so ignore it */
453 if (pfindData->LastAccessTime)
454 inode->i_atime = cifs_NTtimeToUnix
455 (le64_to_cpu(pfindData->LastAccessTime));
456 else /* do not need to use current_fs_time - time not stored */
457 inode->i_atime = CURRENT_TIME;
459 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
461 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
462 cFYI(0, ("Attributes came in as 0x%x", attr));
463 if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
464 inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
465 inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
468 /* set default mode. will override for dirs below */
469 if (atomic_read(&cifsInfo->inUse) == 0)
470 /* new inode, can safely set these fields */
471 inode->i_mode = cifs_sb->mnt_file_mode;
472 else /* since we set the inode type below we need to mask off
473 to avoid strange results if type changes and both
475 inode->i_mode &= ~S_IFMT;
476 /* if (attr & ATTR_REPARSE) */
477 /* We no longer handle these as symlinks because we could not
478 follow them due to the absolute path with drive letter */
479 if (attr & ATTR_DIRECTORY) {
480 /* override default perms since we do not do byte range locking
482 inode->i_mode = cifs_sb->mnt_dir_mode;
483 inode->i_mode |= S_IFDIR;
484 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
485 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
486 /* No need to le64 convert size of zero */
487 (pfindData->EndOfFile == 0)) {
488 inode->i_mode = cifs_sb->mnt_file_mode;
489 inode->i_mode |= S_IFIFO;
490 /* BB Finish for SFU style symlinks and devices */
491 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
492 (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
493 if (decode_sfu_inode(inode,
494 le64_to_cpu(pfindData->EndOfFile),
497 cFYI(1, ("Unrecognized sfu inode type"));
499 cFYI(1, ("sfu mode 0%o", inode->i_mode));
501 inode->i_mode |= S_IFREG;
502 /* treat the dos attribute of read-only as read-only
504 if (cifsInfo->cifsAttrs & ATTR_READONLY)
505 inode->i_mode &= ~(S_IWUGO);
506 else if ((inode->i_mode & S_IWUGO) == 0)
507 /* the ATTR_READONLY flag may have been */
508 /* changed on server -- set any w bits */
509 /* allowed by mnt_file_mode */
510 inode->i_mode |= (S_IWUGO &
511 cifs_sb->mnt_file_mode);
512 /* BB add code here -
513 validate if device or weird share or device type? */
516 spin_lock(&inode->i_lock);
517 if (is_size_safe_to_change(cifsInfo,
518 le64_to_cpu(pfindData->EndOfFile))) {
519 /* can not safely shrink the file size here if the
520 client is writing to it due to potential races */
521 i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
523 /* 512 bytes (2**9) is the fake blocksize that must be
524 used for this calculation */
525 inode->i_blocks = (512 - 1 + le64_to_cpu(
526 pfindData->AllocationSize)) >> 9;
528 spin_unlock(&inode->i_lock);
530 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
532 /* BB fill in uid and gid here? with help from winbind?
533 or retrieve from NTFS stream extended attribute */
534 #ifdef CONFIG_CIFS_EXPERIMENTAL
535 /* fill in 0777 bits from ACL */
536 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
537 cFYI(1, ("Getting mode bits from ACL"));
538 acl_to_uid_mode(inode, full_path, pfid);
541 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
542 /* fill in remaining high mode bits e.g. SUID, VTX */
543 get_sfu_mode(inode, full_path, cifs_sb, xid);
544 } else if (atomic_read(&cifsInfo->inUse) == 0) {
545 inode->i_uid = cifs_sb->mnt_uid;
546 inode->i_gid = cifs_sb->mnt_gid;
547 /* set so we do not keep refreshing these fields with
548 bad data after user has changed them in memory */
549 atomic_set(&cifsInfo->inUse, 1);
552 cifs_set_ops(inode, is_dfs_referral);
559 static const struct inode_operations cifs_ipc_inode_ops = {
560 .lookup = cifs_lookup,
563 /* gets root inode */
564 struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
567 struct cifs_sb_info *cifs_sb;
571 inode = iget_locked(sb, ino);
573 return ERR_PTR(-ENOMEM);
574 if (!(inode->i_state & I_NEW))
577 cifs_sb = CIFS_SB(inode->i_sb);
580 if (cifs_sb->tcon->unix_ext)
581 rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
583 rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid,
585 if (rc && cifs_sb->tcon->ipc) {
586 cFYI(1, ("ipc connection - fake read inode"));
587 inode->i_mode |= S_IFDIR;
589 inode->i_op = &cifs_ipc_inode_ops;
590 inode->i_fop = &simple_dir_operations;
591 inode->i_uid = cifs_sb->mnt_uid;
592 inode->i_gid = cifs_sb->mnt_gid;
598 unlock_new_inode(inode);
600 /* can not call macro FreeXid here since in a void func
601 * TODO: This is no longer true
607 int cifs_unlink(struct inode *inode, struct dentry *direntry)
611 struct cifs_sb_info *cifs_sb;
612 struct cifsTconInfo *pTcon;
613 char *full_path = NULL;
614 struct cifsInodeInfo *cifsInode;
615 FILE_BASIC_INFO *pinfo_buf;
617 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
622 cifs_sb = CIFS_SB(inode->i_sb);
624 cifs_sb = CIFS_SB(direntry->d_sb);
625 pTcon = cifs_sb->tcon;
627 /* Unlink can be called from rename so we can not grab the sem here
628 since we deadlock otherwise */
629 /* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
630 full_path = build_path_from_dentry(direntry);
631 /* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
632 if (full_path == NULL) {
637 if ((pTcon->ses->capabilities & CAP_UNIX) &&
638 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
639 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
640 rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
641 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
642 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
643 cFYI(1, ("posix del rc %d", rc));
644 if ((rc == 0) || (rc == -ENOENT))
645 goto psx_del_no_retry;
648 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
649 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
652 if (direntry->d_inode)
653 drop_nlink(direntry->d_inode);
654 } else if (rc == -ENOENT) {
656 } else if (rc == -ETXTBSY) {
660 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
661 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
662 &netfid, &oplock, NULL, cifs_sb->local_nls,
663 cifs_sb->mnt_cifs_flags &
664 CIFS_MOUNT_MAP_SPECIAL_CHR);
666 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
668 cifs_sb->mnt_cifs_flags &
669 CIFS_MOUNT_MAP_SPECIAL_CHR);
670 CIFSSMBClose(xid, pTcon, netfid);
671 if (direntry->d_inode)
672 drop_nlink(direntry->d_inode);
674 } else if (rc == -EACCES) {
675 /* try only if r/o attribute set in local lookup data? */
676 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
678 /* ATTRS set to normal clears r/o bit */
679 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
680 if (!(pTcon->ses->flags & CIFS_SES_NT4))
681 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
684 cifs_sb->mnt_cifs_flags &
685 CIFS_MOUNT_MAP_SPECIAL_CHR);
689 if (rc == -EOPNOTSUPP) {
692 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
696 For some strange reason it seems that NT4 eats the
697 old setattr call without actually setting the
698 attributes so on to the third attempted workaround
701 /* BB could scan to see if we already have it open
702 and pass in pid of opener to function */
703 rc = CIFSSMBOpen(xid, pTcon, full_path,
704 FILE_OPEN, SYNCHRONIZE |
705 FILE_WRITE_ATTRIBUTES, 0,
706 &netfid, &oplock, NULL,
708 cifs_sb->mnt_cifs_flags &
709 CIFS_MOUNT_MAP_SPECIAL_CHR);
711 rc = CIFSSMBSetFileTimes(xid, pTcon,
714 CIFSSMBClose(xid, pTcon, netfid);
720 rc = CIFSSMBDelFile(xid, pTcon, full_path,
722 cifs_sb->mnt_cifs_flags &
723 CIFS_MOUNT_MAP_SPECIAL_CHR);
725 if (direntry->d_inode)
726 drop_nlink(direntry->d_inode);
727 } else if (rc == -ETXTBSY) {
731 rc = CIFSSMBOpen(xid, pTcon, full_path,
734 CREATE_DELETE_ON_CLOSE,
735 &netfid, &oplock, NULL,
737 cifs_sb->mnt_cifs_flags &
738 CIFS_MOUNT_MAP_SPECIAL_CHR);
740 CIFSSMBRenameOpenFile(xid, pTcon,
743 cifs_sb->mnt_cifs_flags &
744 CIFS_MOUNT_MAP_SPECIAL_CHR);
745 CIFSSMBClose(xid, pTcon, netfid);
746 if (direntry->d_inode)
747 drop_nlink(direntry->d_inode);
749 /* BB if rc = -ETXTBUSY goto the rename logic BB */
753 if (direntry->d_inode) {
754 cifsInode = CIFS_I(direntry->d_inode);
755 cifsInode->time = 0; /* will force revalidate to get info
757 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
760 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
761 cifsInode = CIFS_I(inode);
762 cifsInode->time = 0; /* force revalidate of dir as well */
770 static void posix_fill_in_inode(struct inode *tmp_inode,
771 FILE_UNIX_BASIC_INFO *pData, int isNewInode)
773 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
775 struct timespec local_mtime;
777 cifsInfo->time = jiffies;
778 atomic_inc(&cifsInfo->inUse);
780 /* save mtime and size */
781 local_mtime = tmp_inode->i_mtime;
782 local_size = tmp_inode->i_size;
784 cifs_unix_info_to_inode(tmp_inode, pData, 1);
785 cifs_set_ops(tmp_inode, false);
787 if (!S_ISREG(tmp_inode->i_mode))
791 * No sense invalidating pages for new inode
792 * since we we have not started caching
793 * readahead file data yet.
798 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
799 (local_size == tmp_inode->i_size)) {
800 cFYI(1, ("inode exists but unchanged"));
802 /* file may have changed on server */
803 cFYI(1, ("invalidate inode, readdir detected change"));
804 invalidate_remote_inode(tmp_inode);
808 int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
812 struct cifs_sb_info *cifs_sb;
813 struct cifsTconInfo *pTcon;
814 char *full_path = NULL;
815 struct inode *newinode = NULL;
817 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
821 cifs_sb = CIFS_SB(inode->i_sb);
822 pTcon = cifs_sb->tcon;
824 full_path = build_path_from_dentry(direntry);
825 if (full_path == NULL) {
830 if ((pTcon->ses->capabilities & CAP_UNIX) &&
831 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
832 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
834 FILE_UNIX_BASIC_INFO *pInfo =
835 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
841 mode &= ~current->fs->umask;
842 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
843 mode, NULL /* netfid */, pInfo, &oplock,
844 full_path, cifs_sb->local_nls,
845 cifs_sb->mnt_cifs_flags &
846 CIFS_MOUNT_MAP_SPECIAL_CHR);
847 if (rc == -EOPNOTSUPP) {
849 goto mkdir_retry_old;
851 cFYI(1, ("posix mkdir returned 0x%x", rc));
854 if (pInfo->Type == cpu_to_le32(-1)) {
855 /* no return info, go query for it */
859 /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
863 direntry->d_op = &cifs_ci_dentry_ops;
865 direntry->d_op = &cifs_dentry_ops;
867 newinode = new_inode(inode->i_sb);
868 if (newinode == NULL) {
872 /* Is an i_ino of zero legal? */
873 /* Are there sanity checks we can use to ensure that
874 the server is really filling in that field? */
875 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
877 (unsigned long)pInfo->UniqueId;
878 } /* note ino incremented to unique num in new_inode */
879 if (inode->i_sb->s_flags & MS_NOATIME)
880 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
881 newinode->i_nlink = 2;
883 insert_inode_hash(newinode);
884 d_instantiate(direntry, newinode);
886 /* we already checked in POSIXCreate whether
887 frame was long enough */
888 posix_fill_in_inode(direntry->d_inode,
889 pInfo, 1 /* NewInode */);
890 #ifdef CONFIG_CIFS_DEBUG2
891 cFYI(1, ("instantiated dentry %p %s to inode %p",
892 direntry, direntry->d_name.name, newinode));
894 if (newinode->i_nlink != 2)
895 cFYI(1, ("unexpected number of links %d",
903 /* BB add setting the equivalent of mode via CreateX w/ACLs */
904 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
905 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
907 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
913 rc = cifs_get_inode_info_unix(&newinode, full_path,
916 rc = cifs_get_inode_info(&newinode, full_path, NULL,
917 inode->i_sb, xid, NULL);
920 direntry->d_op = &cifs_ci_dentry_ops;
922 direntry->d_op = &cifs_dentry_ops;
923 d_instantiate(direntry, newinode);
924 /* setting nlink not necessary except in cases where we
925 * failed to get it from the server or was set bogus */
926 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
927 direntry->d_inode->i_nlink = 2;
928 mode &= ~current->fs->umask;
929 if (pTcon->unix_ext) {
930 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
931 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
933 (__u64)current->fsuid,
934 (__u64)current->fsgid,
937 cifs_sb->mnt_cifs_flags &
938 CIFS_MOUNT_MAP_SPECIAL_CHR);
940 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
942 (__u64)-1, 0 /* dev_t */,
944 cifs_sb->mnt_cifs_flags &
945 CIFS_MOUNT_MAP_SPECIAL_CHR);
948 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
949 (mode & S_IWUGO) == 0) {
950 FILE_BASIC_INFO pInfo;
951 memset(&pInfo, 0, sizeof(pInfo));
952 pInfo.Attributes = cpu_to_le32(ATTR_READONLY);
953 CIFSSMBSetTimes(xid, pTcon, full_path,
954 &pInfo, cifs_sb->local_nls,
955 cifs_sb->mnt_cifs_flags &
956 CIFS_MOUNT_MAP_SPECIAL_CHR);
958 if (direntry->d_inode) {
959 direntry->d_inode->i_mode = mode;
960 direntry->d_inode->i_mode |= S_IFDIR;
961 if (cifs_sb->mnt_cifs_flags &
962 CIFS_MOUNT_SET_UID) {
963 direntry->d_inode->i_uid =
965 direntry->d_inode->i_gid =
977 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
981 struct cifs_sb_info *cifs_sb;
982 struct cifsTconInfo *pTcon;
983 char *full_path = NULL;
984 struct cifsInodeInfo *cifsInode;
986 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
990 cifs_sb = CIFS_SB(inode->i_sb);
991 pTcon = cifs_sb->tcon;
993 full_path = build_path_from_dentry(direntry);
994 if (full_path == NULL) {
999 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1000 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1004 spin_lock(&direntry->d_inode->i_lock);
1005 i_size_write(direntry->d_inode, 0);
1006 clear_nlink(direntry->d_inode);
1007 spin_unlock(&direntry->d_inode->i_lock);
1010 cifsInode = CIFS_I(direntry->d_inode);
1011 cifsInode->time = 0; /* force revalidate to go get info when
1013 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1014 current_fs_time(inode->i_sb);
1021 int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1022 struct inode *target_inode, struct dentry *target_direntry)
1026 struct cifs_sb_info *cifs_sb_source;
1027 struct cifs_sb_info *cifs_sb_target;
1028 struct cifsTconInfo *pTcon;
1034 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1035 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1036 pTcon = cifs_sb_source->tcon;
1038 if (pTcon != cifs_sb_target->tcon) {
1040 return -EXDEV; /* BB actually could be allowed if same server,
1041 but different share.
1042 Might eventually add support for this */
1045 /* we already have the rename sem so we do not need to grab it again
1046 here to protect the path integrity */
1047 fromName = build_path_from_dentry(source_direntry);
1048 toName = build_path_from_dentry(target_direntry);
1049 if ((fromName == NULL) || (toName == NULL)) {
1051 goto cifs_rename_exit;
1054 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
1055 cifs_sb_source->local_nls,
1056 cifs_sb_source->mnt_cifs_flags &
1057 CIFS_MOUNT_MAP_SPECIAL_CHR);
1058 if (rc == -EEXIST) {
1059 /* check if they are the same file because rename of hardlinked
1061 FILE_UNIX_BASIC_INFO *info_buf_source;
1062 FILE_UNIX_BASIC_INFO *info_buf_target;
1065 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1066 if (info_buf_source != NULL) {
1067 info_buf_target = info_buf_source + 1;
1068 if (pTcon->unix_ext)
1069 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
1071 cifs_sb_source->local_nls,
1072 cifs_sb_source->mnt_cifs_flags &
1073 CIFS_MOUNT_MAP_SPECIAL_CHR);
1074 /* else rc is still EEXIST so will fall through to
1075 unlink the target and retry rename */
1077 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1079 cifs_sb_target->local_nls,
1080 /* remap based on source sb */
1081 cifs_sb_source->mnt_cifs_flags &
1082 CIFS_MOUNT_MAP_SPECIAL_CHR);
1085 (info_buf_source->UniqueId ==
1086 info_buf_target->UniqueId)) {
1087 /* do not rename since the files are hardlinked which
1090 /* we either can not tell the files are hardlinked
1091 (as with Windows servers) or files are not
1092 hardlinked so delete the target manually before
1093 renaming to follow POSIX rather than Windows
1095 cifs_unlink(target_inode, target_direntry);
1096 rc = CIFSSMBRename(xid, pTcon, fromName,
1098 cifs_sb_source->local_nls,
1099 cifs_sb_source->mnt_cifs_flags
1100 & CIFS_MOUNT_MAP_SPECIAL_CHR);
1102 kfree(info_buf_source);
1103 } /* if we can not get memory just leave rc as EEXIST */
1107 cFYI(1, ("rename rc %d", rc));
1109 if ((rc == -EIO) || (rc == -EEXIST)) {
1113 /* BB FIXME Is Generic Read correct for rename? */
1114 /* if renaming directory - we should not say CREATE_NOT_DIR,
1115 need to test renaming open directory, also GENERIC_READ
1116 might not right be right access to request */
1117 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1118 CREATE_NOT_DIR, &netfid, &oplock, NULL,
1119 cifs_sb_source->local_nls,
1120 cifs_sb_source->mnt_cifs_flags &
1121 CIFS_MOUNT_MAP_SPECIAL_CHR);
1123 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
1124 cifs_sb_source->local_nls,
1125 cifs_sb_source->mnt_cifs_flags &
1126 CIFS_MOUNT_MAP_SPECIAL_CHR);
1127 CIFSSMBClose(xid, pTcon, netfid);
1138 int cifs_revalidate(struct dentry *direntry)
1141 int rc = 0, wbrc = 0;
1143 struct cifs_sb_info *cifs_sb;
1144 struct cifsInodeInfo *cifsInode;
1146 struct timespec local_mtime;
1147 bool invalidate_inode = false;
1149 if (direntry->d_inode == NULL)
1152 cifsInode = CIFS_I(direntry->d_inode);
1154 if (cifsInode == NULL)
1157 /* no sense revalidating inode info on file that no one can write */
1158 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1163 cifs_sb = CIFS_SB(direntry->d_sb);
1165 /* can not safely grab the rename sem here if rename calls revalidate
1166 since that would deadlock */
1167 full_path = build_path_from_dentry(direntry);
1168 if (full_path == NULL) {
1172 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1173 "jiffies %ld", full_path, direntry->d_inode,
1174 direntry->d_inode->i_count.counter, direntry,
1175 direntry->d_time, jiffies));
1177 if (cifsInode->time == 0) {
1178 /* was set to zero previously to force revalidate */
1179 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1180 lookupCacheEnabled) {
1181 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1182 (direntry->d_inode->i_nlink == 1)) {
1187 cFYI(1, ("Have to revalidate file due to hardlinks"));
1191 /* save mtime and size */
1192 local_mtime = direntry->d_inode->i_mtime;
1193 local_size = direntry->d_inode->i_size;
1195 if (cifs_sb->tcon->unix_ext) {
1196 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
1197 direntry->d_sb, xid);
1199 cFYI(1, ("error on getting revalidate info %d", rc));
1200 /* if (rc != -ENOENT)
1201 rc = 0; */ /* BB should we cache info on
1205 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
1206 direntry->d_sb, xid, NULL);
1208 cFYI(1, ("error on getting revalidate info %d", rc));
1209 /* if (rc != -ENOENT)
1210 rc = 0; */ /* BB should we cache info on
1214 /* should we remap certain errors, access denied?, to zero */
1216 /* if not oplocked, we invalidate inode pages if mtime or file size
1217 had changed on server */
1219 if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
1220 (local_size == direntry->d_inode->i_size)) {
1221 cFYI(1, ("cifs_revalidate - inode unchanged"));
1223 /* file may have changed on server */
1224 if (cifsInode->clientCanCacheRead) {
1225 /* no need to invalidate inode pages since we were the
1226 only ones who could have modified the file and the
1227 server copy is staler than ours */
1229 invalidate_inode = true;
1233 /* can not grab this sem since kernel filesys locking documentation
1234 indicates i_mutex may be taken by the kernel on lookup and rename
1235 which could deadlock if we grab the i_mutex here as well */
1236 /* mutex_lock(&direntry->d_inode->i_mutex);*/
1237 /* need to write out dirty pages here */
1238 if (direntry->d_inode->i_mapping) {
1239 /* do we need to lock inode until after invalidate completes
1241 wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping);
1243 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
1245 if (invalidate_inode) {
1246 /* shrink_dcache not necessary now that cifs dentry ops
1247 are exported for negative dentries */
1248 /* if (S_ISDIR(direntry->d_inode->i_mode))
1249 shrink_dcache_parent(direntry); */
1250 if (S_ISREG(direntry->d_inode->i_mode)) {
1251 if (direntry->d_inode->i_mapping)
1252 wbrc = filemap_fdatawait(direntry->d_inode->i_mapping);
1254 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
1255 /* may eventually have to do this for open files too */
1256 if (list_empty(&(cifsInode->openFileList))) {
1257 /* changed on server - flush read ahead pages */
1258 cFYI(1, ("Invalidating read ahead data on "
1260 invalidate_remote_inode(direntry->d_inode);
1264 /* mutex_unlock(&direntry->d_inode->i_mutex); */
1271 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1274 int err = cifs_revalidate(dentry);
1276 generic_fillattr(dentry->d_inode, stat);
1277 stat->blksize = CIFS_MAX_MSGSIZE;
1282 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1284 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1285 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1289 page = grab_cache_page(mapping, index);
1293 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1295 page_cache_release(page);
1299 static int cifs_vmtruncate(struct inode *inode, loff_t offset)
1301 struct address_space *mapping = inode->i_mapping;
1302 unsigned long limit;
1304 spin_lock(&inode->i_lock);
1305 if (inode->i_size < offset)
1308 * truncation of in-use swapfiles is disallowed - it would cause
1309 * subsequent swapout to scribble on the now-freed blocks.
1311 if (IS_SWAPFILE(inode)) {
1312 spin_unlock(&inode->i_lock);
1315 i_size_write(inode, offset);
1316 spin_unlock(&inode->i_lock);
1318 * unmap_mapping_range is called twice, first simply for efficiency
1319 * so that truncate_inode_pages does fewer single-page unmaps. However
1320 * after this first call, and before truncate_inode_pages finishes,
1321 * it is possible for private pages to be COWed, which remain after
1322 * truncate_inode_pages finishes, hence the second unmap_mapping_range
1323 * call must be made for correctness.
1325 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1326 truncate_inode_pages(mapping, offset);
1327 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1331 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
1332 if (limit != RLIM_INFINITY && offset > limit) {
1333 spin_unlock(&inode->i_lock);
1336 if (offset > inode->i_sb->s_maxbytes) {
1337 spin_unlock(&inode->i_lock);
1340 i_size_write(inode, offset);
1341 spin_unlock(&inode->i_lock);
1343 if (inode->i_op && inode->i_op->truncate)
1344 inode->i_op->truncate(inode);
1347 send_sig(SIGXFSZ, current, 0);
1354 int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1357 struct cifs_sb_info *cifs_sb;
1358 struct cifsTconInfo *pTcon;
1359 char *full_path = NULL;
1361 struct cifsFileInfo *open_file = NULL;
1362 FILE_BASIC_INFO time_buf;
1363 bool set_time = false;
1364 bool set_dosattr = false;
1365 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1366 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1367 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1368 struct cifsInodeInfo *cifsInode;
1369 struct inode *inode = direntry->d_inode;
1373 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
1374 direntry->d_name.name, attrs->ia_valid));
1376 cifs_sb = CIFS_SB(inode->i_sb);
1377 pTcon = cifs_sb->tcon;
1379 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
1380 /* check if we have permission to change attrs */
1381 rc = inode_change_ok(inode, attrs);
1389 full_path = build_path_from_dentry(direntry);
1390 if (full_path == NULL) {
1394 cifsInode = CIFS_I(inode);
1396 if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
1398 Flush data before changing file size or changing the last
1399 write time of the file on the server. If the
1400 flush returns error, store it to report later and continue.
1401 BB: This should be smarter. Why bother flushing pages that
1402 will be truncated anyway? Also, should we error out here if
1403 the flush returns error?
1405 rc = filemap_write_and_wait(inode->i_mapping);
1407 cifsInode->write_behind_rc = rc;
1412 if (attrs->ia_valid & ATTR_SIZE) {
1413 /* To avoid spurious oplock breaks from server, in the case of
1414 inodes that we already have open, avoid doing path based
1415 setting of file size if we can do it by handle.
1416 This keeps our caching token (oplock) and avoids timeouts
1417 when the local oplock break takes longer to flush
1418 writebehind data than the SMB timeout for the SetPathInfo
1419 request would allow */
1421 open_file = find_writable_file(cifsInode);
1423 __u16 nfid = open_file->netfid;
1424 __u32 npid = open_file->pid;
1425 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1427 atomic_dec(&open_file->wrtPending);
1428 cFYI(1, ("SetFSize for attrs rc = %d", rc));
1429 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1430 unsigned int bytes_written;
1431 rc = CIFSSMBWrite(xid, pTcon,
1432 nfid, 0, attrs->ia_size,
1433 &bytes_written, NULL, NULL,
1434 1 /* 45 seconds */);
1435 cFYI(1, ("Wrt seteof rc %d", rc));
1441 /* Set file size by pathname rather than by handle
1442 either because no valid, writeable file handle for
1443 it was found or because there was an error setting
1445 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1446 attrs->ia_size, false,
1448 cifs_sb->mnt_cifs_flags &
1449 CIFS_MOUNT_MAP_SPECIAL_CHR);
1450 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
1451 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1455 rc = SMBLegacyOpen(xid, pTcon, full_path,
1456 FILE_OPEN, GENERIC_WRITE,
1457 CREATE_NOT_DIR, &netfid, &oplock,
1458 NULL, cifs_sb->local_nls,
1459 cifs_sb->mnt_cifs_flags &
1460 CIFS_MOUNT_MAP_SPECIAL_CHR);
1462 unsigned int bytes_written;
1463 rc = CIFSSMBWrite(xid, pTcon,
1466 &bytes_written, NULL,
1467 NULL, 1 /* 45 sec */);
1468 cFYI(1, ("wrt seteof rc %d", rc));
1469 CIFSSMBClose(xid, pTcon, netfid);
1475 /* Server is ok setting allocation size implicitly - no need
1477 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, true,
1478 cifs_sb->local_nls);
1482 rc = cifs_vmtruncate(inode, attrs->ia_size);
1483 cifs_truncate_page(inode->i_mapping, inode->i_size);
1485 goto cifs_setattr_exit;
1487 if (attrs->ia_valid & ATTR_UID) {
1488 cFYI(1, ("UID changed to %d", attrs->ia_uid));
1489 uid = attrs->ia_uid;
1491 if (attrs->ia_valid & ATTR_GID) {
1492 cFYI(1, ("GID changed to %d", attrs->ia_gid));
1493 gid = attrs->ia_gid;
1496 time_buf.Attributes = 0;
1498 /* skip mode change if it's just for clearing setuid/setgid */
1499 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
1500 attrs->ia_valid &= ~ATTR_MODE;
1502 if (attrs->ia_valid & ATTR_MODE) {
1503 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
1504 mode = attrs->ia_mode;
1507 if ((pTcon->unix_ext)
1508 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1509 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
1510 0 /* dev_t */, cifs_sb->local_nls,
1511 cifs_sb->mnt_cifs_flags &
1512 CIFS_MOUNT_MAP_SPECIAL_CHR);
1513 else if (attrs->ia_valid & ATTR_MODE) {
1515 #ifdef CONFIG_CIFS_EXPERIMENTAL
1516 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1517 rc = mode_to_acl(inode, full_path, mode);
1518 else if ((mode & S_IWUGO) == 0) {
1520 if ((mode & S_IWUGO) == 0) {
1523 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1525 time_buf.Attributes =
1526 cpu_to_le32(cifsInode->cifsAttrs |
1529 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1530 /* If file is readonly on server, we would
1531 not be able to write to it - so if any write
1532 bit is enabled for user or group or other we
1533 need to at least try to remove r/o dos attr */
1535 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1537 /* Windows ignores set to zero */
1538 if (time_buf.Attributes == 0)
1539 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
1543 if (attrs->ia_valid & ATTR_ATIME) {
1545 time_buf.LastAccessTime =
1546 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1548 time_buf.LastAccessTime = 0;
1550 if (attrs->ia_valid & ATTR_MTIME) {
1552 time_buf.LastWriteTime =
1553 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1555 time_buf.LastWriteTime = 0;
1556 /* Do not set ctime explicitly unless other time
1557 stamps are changed explicitly (i.e. by utime()
1558 since we would then have a mix of client and
1561 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1563 /* Although Samba throws this field away
1564 it may be useful to Windows - but we do
1565 not want to set ctime unless some other
1566 timestamp is changing */
1567 cFYI(1, ("CIFS - CTIME changed"));
1568 time_buf.ChangeTime =
1569 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1571 time_buf.ChangeTime = 0;
1573 if (set_time || set_dosattr) {
1574 time_buf.CreationTime = 0; /* do not change */
1575 /* In the future we should experiment - try setting timestamps
1576 via Handle (SetFileInfo) instead of by path */
1577 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1578 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
1580 cifs_sb->mnt_cifs_flags &
1581 CIFS_MOUNT_MAP_SPECIAL_CHR);
1585 if (rc == -EOPNOTSUPP) {
1589 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1590 "times not supported by this server"));
1591 /* BB we could scan to see if we already have it open
1592 and pass in pid of opener to function */
1593 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1594 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1595 CREATE_NOT_DIR, &netfid, &oplock,
1596 NULL, cifs_sb->local_nls,
1597 cifs_sb->mnt_cifs_flags &
1598 CIFS_MOUNT_MAP_SPECIAL_CHR);
1600 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1602 CIFSSMBClose(xid, pTcon, netfid);
1604 /* BB For even older servers we could convert time_buf
1605 into old DOS style which uses two second
1608 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
1609 &time_buf, cifs_sb->local_nls); */
1612 /* Even if error on time set, no sense failing the call if
1613 the server would set the time to a reasonable value anyway,
1614 and this check ensures that we are not being called from
1615 sys_utimes in which case we ought to fail the call back to
1616 the user when the server rejects the call */
1617 if ((rc) && (attrs->ia_valid &
1618 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1622 /* do not need local check to inode_check_ok since the server does
1625 rc = inode_setattr(inode, attrs);
1633 void cifs_delete_inode(struct inode *inode)
1635 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
1636 /* may have to add back in if and when safe distributed caching of
1637 directories added e.g. via FindNotify */