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 static const unsigned char *cifs_get_search_path(struct cifsTconInfo *pTcon,
165 const char *search_path)
171 if (!(pTcon->Flags & SMB_SHARE_IS_IN_DFS))
174 /* use full path name for working with DFS */
175 tree_len = strnlen(pTcon->treeName, MAX_TREE_SIZE + 1);
176 path_len = strnlen(search_path, MAX_PATHCONF);
178 tmp_path = kmalloc(tree_len+path_len+1, GFP_KERNEL);
179 if (tmp_path == NULL)
182 strncpy(tmp_path, pTcon->treeName, tree_len);
183 strncpy(tmp_path+tree_len, search_path, path_len);
184 tmp_path[tree_len+path_len] = 0;
188 int cifs_get_inode_info_unix(struct inode **pinode,
189 const unsigned char *search_path, struct super_block *sb, int xid)
192 FILE_UNIX_BASIC_INFO findData;
193 struct cifsTconInfo *pTcon;
195 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
196 const unsigned char *full_path;
197 bool is_dfs_referral = false;
199 pTcon = cifs_sb->tcon;
200 cFYI(1, ("Getting info on %s", search_path));
202 full_path = cifs_get_search_path(pTcon, search_path);
204 try_again_CIFSSMBUnixQPathInfo:
205 /* could have done a find first instead but this returns more info */
206 rc = CIFSSMBUnixQPathInfo(xid, pTcon, full_path, &findData,
207 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
208 CIFS_MOUNT_MAP_SPECIAL_CHR);
209 /* dump_mem("\nUnixQPathInfo return data", &findData,
210 sizeof(findData)); */
212 if (rc == -EREMOTE && !is_dfs_referral) {
213 is_dfs_referral = true;
214 full_path = search_path;
215 goto try_again_CIFSSMBUnixQPathInfo;
219 struct cifsInodeInfo *cifsInfo;
220 __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
221 __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
224 if (*pinode == NULL) {
225 *pinode = new_inode(sb);
226 if (*pinode == NULL) {
230 /* Is an i_ino of zero legal? */
231 /* Are there sanity checks we can use to ensure that
232 the server is really filling in that field? */
233 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
235 (unsigned long)findData.UniqueId;
236 } /* note ino incremented to unique num in new_inode */
237 if (sb->s_flags & MS_NOATIME)
238 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
240 insert_inode_hash(*pinode);
244 cifsInfo = CIFS_I(inode);
246 cFYI(1, ("Old time %ld", cifsInfo->time));
247 cifsInfo->time = jiffies;
248 cFYI(1, ("New time %ld", cifsInfo->time));
249 /* this is ok to set on every inode revalidate */
250 atomic_set(&cifsInfo->inUse, 1);
252 cifs_unix_info_to_inode(inode, &findData, 0);
255 if (num_of_bytes < end_of_file)
256 cFYI(1, ("allocation size less than end of file"));
257 cFYI(1, ("Size %ld and blocks %llu",
258 (unsigned long) inode->i_size,
259 (unsigned long long)inode->i_blocks));
261 cifs_set_ops(inode, is_dfs_referral);
264 if (full_path != search_path)
269 static int decode_sfu_inode(struct inode *inode, __u64 size,
270 const unsigned char *path,
271 struct cifs_sb_info *cifs_sb, int xid)
276 struct cifsTconInfo *pTcon = cifs_sb->tcon;
278 unsigned int bytes_read;
284 inode->i_mode |= S_IFIFO;
286 } else if (size < 8) {
287 return -EINVAL; /* EOPNOTSUPP? */
290 rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
291 CREATE_NOT_DIR, &netfid, &oplock, NULL,
293 cifs_sb->mnt_cifs_flags &
294 CIFS_MOUNT_MAP_SPECIAL_CHR);
296 int buf_type = CIFS_NO_BUFFER;
298 rc = CIFSSMBRead(xid, pTcon,
300 24 /* length */, 0 /* offset */,
301 &bytes_read, &pbuf, &buf_type);
302 if ((rc == 0) && (bytes_read >= 8)) {
303 if (memcmp("IntxBLK", pbuf, 8) == 0) {
304 cFYI(1, ("Block device"));
305 inode->i_mode |= S_IFBLK;
306 if (bytes_read == 24) {
307 /* we have enough to decode dev num */
308 __u64 mjr; /* major */
309 __u64 mnr; /* minor */
310 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
311 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
312 inode->i_rdev = MKDEV(mjr, mnr);
314 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
315 cFYI(1, ("Char device"));
316 inode->i_mode |= S_IFCHR;
317 if (bytes_read == 24) {
318 /* we have enough to decode dev num */
319 __u64 mjr; /* major */
320 __u64 mnr; /* minor */
321 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
322 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
323 inode->i_rdev = MKDEV(mjr, mnr);
325 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
326 cFYI(1, ("Symlink"));
327 inode->i_mode |= S_IFLNK;
329 inode->i_mode |= S_IFREG; /* file? */
333 inode->i_mode |= S_IFREG; /* then it is a file */
334 rc = -EOPNOTSUPP; /* or some unknown SFU type */
336 CIFSSMBClose(xid, pTcon, netfid);
341 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
343 static int get_sfu_mode(struct inode *inode,
344 const unsigned char *path,
345 struct cifs_sb_info *cifs_sb, int xid)
347 #ifdef CONFIG_CIFS_XATTR
352 rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
353 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
354 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
358 mode = le32_to_cpu(*((__le32 *)ea_value));
359 inode->i_mode &= ~SFBITS_MASK;
360 cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode));
361 inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
362 cFYI(1, ("special mode bits 0%o", mode));
372 int cifs_get_inode_info(struct inode **pinode,
373 const unsigned char *search_path, FILE_ALL_INFO *pfindData,
374 struct super_block *sb, int xid, const __u16 *pfid)
377 struct cifsTconInfo *pTcon;
379 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
380 const unsigned char *full_path = NULL;
382 int adjustTZ = FALSE;
383 bool is_dfs_referral = false;
385 pTcon = cifs_sb->tcon;
386 cFYI(1, ("Getting info on %s", search_path));
388 if ((pfindData == NULL) && (*pinode != NULL)) {
389 if (CIFS_I(*pinode)->clientCanCacheRead) {
390 cFYI(1, ("No need to revalidate cached inode sizes"));
395 /* if file info not passed in then get it from server */
396 if (pfindData == NULL) {
397 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
400 pfindData = (FILE_ALL_INFO *)buf;
402 full_path = cifs_get_search_path(pTcon, search_path);
404 try_again_CIFSSMBQPathInfo:
405 /* could do find first instead but this returns more info */
406 rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData,
408 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
409 CIFS_MOUNT_MAP_SPECIAL_CHR);
410 /* BB optimize code so we do not make the above call
411 when server claims no NT SMB support and the above call
412 failed at least once - set flag in tcon or mount */
413 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
414 rc = SMBQueryInformation(xid, pTcon, full_path,
415 pfindData, cifs_sb->local_nls,
416 cifs_sb->mnt_cifs_flags &
417 CIFS_MOUNT_MAP_SPECIAL_CHR);
421 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
423 if (rc == -EREMOTE && !is_dfs_referral) {
424 is_dfs_referral = true;
425 full_path = search_path;
426 goto try_again_CIFSSMBQPathInfo;
430 struct cifsInodeInfo *cifsInfo;
431 __u32 attr = le32_to_cpu(pfindData->Attributes);
434 if (*pinode == NULL) {
435 *pinode = new_inode(sb);
436 if (*pinode == NULL) {
440 /* Is an i_ino of zero legal? Can we use that to check
441 if the server supports returning inode numbers? Are
442 there other sanity checks we can use to ensure that
443 the server is really filling in that field? */
445 /* We can not use the IndexNumber field by default from
446 Windows or Samba (in ALL_INFO buf) but we can request
447 it explicitly. It may not be unique presumably if
448 the server has multiple devices mounted under one
451 /* There may be higher info levels that work but are
452 there Windows server or network appliances for which
453 IndexNumber field is not guaranteed unique? */
455 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
459 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
460 search_path, &inode_num,
462 cifs_sb->mnt_cifs_flags &
463 CIFS_MOUNT_MAP_SPECIAL_CHR);
465 cFYI(1, ("GetSrvInodeNum rc %d", rc1));
466 /* BB EOPNOSUPP disable SERVER_INUM? */
467 } else /* do we need cast or hash to ino? */
468 (*pinode)->i_ino = inode_num;
469 } /* else ino incremented to unique num in new_inode*/
470 if (sb->s_flags & MS_NOATIME)
471 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
472 insert_inode_hash(*pinode);
475 cifsInfo = CIFS_I(inode);
476 cifsInfo->cifsAttrs = attr;
477 cFYI(1, ("Old time %ld", cifsInfo->time));
478 cifsInfo->time = jiffies;
479 cFYI(1, ("New time %ld", cifsInfo->time));
481 /* blksize needs to be multiple of two. So safer to default to
482 blksize and blkbits set in superblock so 2**blkbits and blksize
483 will match rather than setting to:
484 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
486 /* Linux can not store file creation time so ignore it */
487 if (pfindData->LastAccessTime)
488 inode->i_atime = cifs_NTtimeToUnix
489 (le64_to_cpu(pfindData->LastAccessTime));
490 else /* do not need to use current_fs_time - time not stored */
491 inode->i_atime = CURRENT_TIME;
493 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
495 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
496 cFYI(0, ("Attributes came in as 0x%x", attr));
497 if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
498 inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
499 inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
502 /* set default mode. will override for dirs below */
503 if (atomic_read(&cifsInfo->inUse) == 0)
504 /* new inode, can safely set these fields */
505 inode->i_mode = cifs_sb->mnt_file_mode;
506 else /* since we set the inode type below we need to mask off
507 to avoid strange results if type changes and both
509 inode->i_mode &= ~S_IFMT;
510 /* if (attr & ATTR_REPARSE) */
511 /* We no longer handle these as symlinks because we could not
512 follow them due to the absolute path with drive letter */
513 if (attr & ATTR_DIRECTORY) {
514 /* override default perms since we do not do byte range locking
516 inode->i_mode = cifs_sb->mnt_dir_mode;
517 inode->i_mode |= S_IFDIR;
518 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
519 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
520 /* No need to le64 convert size of zero */
521 (pfindData->EndOfFile == 0)) {
522 inode->i_mode = cifs_sb->mnt_file_mode;
523 inode->i_mode |= S_IFIFO;
524 /* BB Finish for SFU style symlinks and devices */
525 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
526 (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
527 if (decode_sfu_inode(inode,
528 le64_to_cpu(pfindData->EndOfFile),
531 cFYI(1, ("Unrecognized sfu inode type"));
533 cFYI(1, ("sfu mode 0%o", inode->i_mode));
535 inode->i_mode |= S_IFREG;
536 /* treat the dos attribute of read-only as read-only
538 if (cifsInfo->cifsAttrs & ATTR_READONLY)
539 inode->i_mode &= ~(S_IWUGO);
540 else if ((inode->i_mode & S_IWUGO) == 0)
541 /* the ATTR_READONLY flag may have been */
542 /* changed on server -- set any w bits */
543 /* allowed by mnt_file_mode */
544 inode->i_mode |= (S_IWUGO &
545 cifs_sb->mnt_file_mode);
546 /* BB add code here -
547 validate if device or weird share or device type? */
550 spin_lock(&inode->i_lock);
551 if (is_size_safe_to_change(cifsInfo,
552 le64_to_cpu(pfindData->EndOfFile))) {
553 /* can not safely shrink the file size here if the
554 client is writing to it due to potential races */
555 i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
557 /* 512 bytes (2**9) is the fake blocksize that must be
558 used for this calculation */
559 inode->i_blocks = (512 - 1 + le64_to_cpu(
560 pfindData->AllocationSize)) >> 9;
562 spin_unlock(&inode->i_lock);
564 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
566 /* BB fill in uid and gid here? with help from winbind?
567 or retrieve from NTFS stream extended attribute */
568 #ifdef CONFIG_CIFS_EXPERIMENTAL
569 /* fill in 0777 bits from ACL */
570 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
571 cFYI(1, ("Getting mode bits from ACL"));
572 acl_to_uid_mode(inode, search_path, pfid);
575 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
576 /* fill in remaining high mode bits e.g. SUID, VTX */
577 get_sfu_mode(inode, search_path, cifs_sb, xid);
578 } else if (atomic_read(&cifsInfo->inUse) == 0) {
579 inode->i_uid = cifs_sb->mnt_uid;
580 inode->i_gid = cifs_sb->mnt_gid;
581 /* set so we do not keep refreshing these fields with
582 bad data after user has changed them in memory */
583 atomic_set(&cifsInfo->inUse, 1);
586 cifs_set_ops(inode, is_dfs_referral);
589 if (full_path != search_path)
595 static const struct inode_operations cifs_ipc_inode_ops = {
596 .lookup = cifs_lookup,
599 /* gets root inode */
600 struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
603 struct cifs_sb_info *cifs_sb;
607 inode = iget_locked(sb, ino);
609 return ERR_PTR(-ENOMEM);
610 if (!(inode->i_state & I_NEW))
613 cifs_sb = CIFS_SB(inode->i_sb);
616 if (cifs_sb->tcon->unix_ext)
617 rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
619 rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid,
621 if (rc && cifs_sb->tcon->ipc) {
622 cFYI(1, ("ipc connection - fake read inode"));
623 inode->i_mode |= S_IFDIR;
625 inode->i_op = &cifs_ipc_inode_ops;
626 inode->i_fop = &simple_dir_operations;
627 inode->i_uid = cifs_sb->mnt_uid;
628 inode->i_gid = cifs_sb->mnt_gid;
634 unlock_new_inode(inode);
636 /* can not call macro FreeXid here since in a void func
637 * TODO: This is no longer true
643 int cifs_unlink(struct inode *inode, struct dentry *direntry)
647 struct cifs_sb_info *cifs_sb;
648 struct cifsTconInfo *pTcon;
649 char *full_path = NULL;
650 struct cifsInodeInfo *cifsInode;
651 FILE_BASIC_INFO *pinfo_buf;
653 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
658 cifs_sb = CIFS_SB(inode->i_sb);
660 cifs_sb = CIFS_SB(direntry->d_sb);
661 pTcon = cifs_sb->tcon;
663 /* Unlink can be called from rename so we can not grab the sem here
664 since we deadlock otherwise */
665 /* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
666 full_path = build_path_from_dentry(direntry);
667 /* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
668 if (full_path == NULL) {
673 if ((pTcon->ses->capabilities & CAP_UNIX) &&
674 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
675 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
676 rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
677 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
678 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
679 cFYI(1, ("posix del rc %d", rc));
680 if ((rc == 0) || (rc == -ENOENT))
681 goto psx_del_no_retry;
684 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
685 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
688 if (direntry->d_inode)
689 drop_nlink(direntry->d_inode);
690 } else if (rc == -ENOENT) {
692 } else if (rc == -ETXTBSY) {
696 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
697 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
698 &netfid, &oplock, NULL, cifs_sb->local_nls,
699 cifs_sb->mnt_cifs_flags &
700 CIFS_MOUNT_MAP_SPECIAL_CHR);
702 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
704 cifs_sb->mnt_cifs_flags &
705 CIFS_MOUNT_MAP_SPECIAL_CHR);
706 CIFSSMBClose(xid, pTcon, netfid);
707 if (direntry->d_inode)
708 drop_nlink(direntry->d_inode);
710 } else if (rc == -EACCES) {
711 /* try only if r/o attribute set in local lookup data? */
712 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
714 /* ATTRS set to normal clears r/o bit */
715 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
716 if (!(pTcon->ses->flags & CIFS_SES_NT4))
717 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
720 cifs_sb->mnt_cifs_flags &
721 CIFS_MOUNT_MAP_SPECIAL_CHR);
725 if (rc == -EOPNOTSUPP) {
728 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
732 For some strange reason it seems that NT4 eats the
733 old setattr call without actually setting the
734 attributes so on to the third attempted workaround
737 /* BB could scan to see if we already have it open
738 and pass in pid of opener to function */
739 rc = CIFSSMBOpen(xid, pTcon, full_path,
740 FILE_OPEN, SYNCHRONIZE |
741 FILE_WRITE_ATTRIBUTES, 0,
742 &netfid, &oplock, NULL,
744 cifs_sb->mnt_cifs_flags &
745 CIFS_MOUNT_MAP_SPECIAL_CHR);
747 rc = CIFSSMBSetFileTimes(xid, pTcon,
750 CIFSSMBClose(xid, pTcon, netfid);
756 rc = CIFSSMBDelFile(xid, pTcon, full_path,
758 cifs_sb->mnt_cifs_flags &
759 CIFS_MOUNT_MAP_SPECIAL_CHR);
761 if (direntry->d_inode)
762 drop_nlink(direntry->d_inode);
763 } else if (rc == -ETXTBSY) {
767 rc = CIFSSMBOpen(xid, pTcon, full_path,
770 CREATE_DELETE_ON_CLOSE,
771 &netfid, &oplock, NULL,
773 cifs_sb->mnt_cifs_flags &
774 CIFS_MOUNT_MAP_SPECIAL_CHR);
776 CIFSSMBRenameOpenFile(xid, pTcon,
779 cifs_sb->mnt_cifs_flags &
780 CIFS_MOUNT_MAP_SPECIAL_CHR);
781 CIFSSMBClose(xid, pTcon, netfid);
782 if (direntry->d_inode)
783 drop_nlink(direntry->d_inode);
785 /* BB if rc = -ETXTBUSY goto the rename logic BB */
789 if (direntry->d_inode) {
790 cifsInode = CIFS_I(direntry->d_inode);
791 cifsInode->time = 0; /* will force revalidate to get info
793 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
796 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
797 cifsInode = CIFS_I(inode);
798 cifsInode->time = 0; /* force revalidate of dir as well */
806 static void posix_fill_in_inode(struct inode *tmp_inode,
807 FILE_UNIX_BASIC_INFO *pData, int isNewInode)
809 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
811 struct timespec local_mtime;
813 cifsInfo->time = jiffies;
814 atomic_inc(&cifsInfo->inUse);
816 /* save mtime and size */
817 local_mtime = tmp_inode->i_mtime;
818 local_size = tmp_inode->i_size;
820 cifs_unix_info_to_inode(tmp_inode, pData, 1);
821 cifs_set_ops(tmp_inode, false);
823 if (!S_ISREG(tmp_inode->i_mode))
827 * No sense invalidating pages for new inode
828 * since we we have not started caching
829 * readahead file data yet.
834 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
835 (local_size == tmp_inode->i_size)) {
836 cFYI(1, ("inode exists but unchanged"));
838 /* file may have changed on server */
839 cFYI(1, ("invalidate inode, readdir detected change"));
840 invalidate_remote_inode(tmp_inode);
844 int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
848 struct cifs_sb_info *cifs_sb;
849 struct cifsTconInfo *pTcon;
850 char *full_path = NULL;
851 struct inode *newinode = NULL;
853 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
857 cifs_sb = CIFS_SB(inode->i_sb);
858 pTcon = cifs_sb->tcon;
860 full_path = build_path_from_dentry(direntry);
861 if (full_path == NULL) {
866 if ((pTcon->ses->capabilities & CAP_UNIX) &&
867 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
868 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
870 FILE_UNIX_BASIC_INFO *pInfo =
871 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
877 mode &= ~current->fs->umask;
878 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
879 mode, NULL /* netfid */, pInfo, &oplock,
880 full_path, cifs_sb->local_nls,
881 cifs_sb->mnt_cifs_flags &
882 CIFS_MOUNT_MAP_SPECIAL_CHR);
883 if (rc == -EOPNOTSUPP) {
885 goto mkdir_retry_old;
887 cFYI(1, ("posix mkdir returned 0x%x", rc));
890 if (pInfo->Type == cpu_to_le32(-1)) {
891 /* no return info, go query for it */
895 /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
899 direntry->d_op = &cifs_ci_dentry_ops;
901 direntry->d_op = &cifs_dentry_ops;
903 newinode = new_inode(inode->i_sb);
904 if (newinode == NULL) {
908 /* Is an i_ino of zero legal? */
909 /* Are there sanity checks we can use to ensure that
910 the server is really filling in that field? */
911 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
913 (unsigned long)pInfo->UniqueId;
914 } /* note ino incremented to unique num in new_inode */
915 if (inode->i_sb->s_flags & MS_NOATIME)
916 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
917 newinode->i_nlink = 2;
919 insert_inode_hash(newinode);
920 d_instantiate(direntry, newinode);
922 /* we already checked in POSIXCreate whether
923 frame was long enough */
924 posix_fill_in_inode(direntry->d_inode,
925 pInfo, 1 /* NewInode */);
926 #ifdef CONFIG_CIFS_DEBUG2
927 cFYI(1, ("instantiated dentry %p %s to inode %p",
928 direntry, direntry->d_name.name, newinode));
930 if (newinode->i_nlink != 2)
931 cFYI(1, ("unexpected number of links %d",
939 /* BB add setting the equivalent of mode via CreateX w/ACLs */
940 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
941 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
943 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
949 rc = cifs_get_inode_info_unix(&newinode, full_path,
952 rc = cifs_get_inode_info(&newinode, full_path, NULL,
953 inode->i_sb, xid, NULL);
956 direntry->d_op = &cifs_ci_dentry_ops;
958 direntry->d_op = &cifs_dentry_ops;
959 d_instantiate(direntry, newinode);
960 /* setting nlink not necessary except in cases where we
961 * failed to get it from the server or was set bogus */
962 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
963 direntry->d_inode->i_nlink = 2;
964 if (pTcon->unix_ext) {
965 mode &= ~current->fs->umask;
966 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
967 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
969 (__u64)current->fsuid,
970 (__u64)current->fsgid,
973 cifs_sb->mnt_cifs_flags &
974 CIFS_MOUNT_MAP_SPECIAL_CHR);
976 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
978 (__u64)-1, 0 /* dev_t */,
980 cifs_sb->mnt_cifs_flags &
981 CIFS_MOUNT_MAP_SPECIAL_CHR);
984 /* BB to be implemented via Windows secrty descriptors
985 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
986 -1, -1, local_nls); */
987 if (direntry->d_inode) {
988 direntry->d_inode->i_mode = mode;
989 direntry->d_inode->i_mode |= S_IFDIR;
990 if (cifs_sb->mnt_cifs_flags &
991 CIFS_MOUNT_SET_UID) {
992 direntry->d_inode->i_uid =
994 direntry->d_inode->i_gid =
1006 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1010 struct cifs_sb_info *cifs_sb;
1011 struct cifsTconInfo *pTcon;
1012 char *full_path = NULL;
1013 struct cifsInodeInfo *cifsInode;
1015 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
1019 cifs_sb = CIFS_SB(inode->i_sb);
1020 pTcon = cifs_sb->tcon;
1022 full_path = build_path_from_dentry(direntry);
1023 if (full_path == NULL) {
1028 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1029 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1033 spin_lock(&direntry->d_inode->i_lock);
1034 i_size_write(direntry->d_inode, 0);
1035 clear_nlink(direntry->d_inode);
1036 spin_unlock(&direntry->d_inode->i_lock);
1039 cifsInode = CIFS_I(direntry->d_inode);
1040 cifsInode->time = 0; /* force revalidate to go get info when
1042 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1043 current_fs_time(inode->i_sb);
1050 int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1051 struct inode *target_inode, struct dentry *target_direntry)
1055 struct cifs_sb_info *cifs_sb_source;
1056 struct cifs_sb_info *cifs_sb_target;
1057 struct cifsTconInfo *pTcon;
1063 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1064 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1065 pTcon = cifs_sb_source->tcon;
1067 if (pTcon != cifs_sb_target->tcon) {
1069 return -EXDEV; /* BB actually could be allowed if same server,
1070 but different share.
1071 Might eventually add support for this */
1074 /* we already have the rename sem so we do not need to grab it again
1075 here to protect the path integrity */
1076 fromName = build_path_from_dentry(source_direntry);
1077 toName = build_path_from_dentry(target_direntry);
1078 if ((fromName == NULL) || (toName == NULL)) {
1080 goto cifs_rename_exit;
1083 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
1084 cifs_sb_source->local_nls,
1085 cifs_sb_source->mnt_cifs_flags &
1086 CIFS_MOUNT_MAP_SPECIAL_CHR);
1087 if (rc == -EEXIST) {
1088 /* check if they are the same file because rename of hardlinked
1090 FILE_UNIX_BASIC_INFO *info_buf_source;
1091 FILE_UNIX_BASIC_INFO *info_buf_target;
1094 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1095 if (info_buf_source != NULL) {
1096 info_buf_target = info_buf_source + 1;
1097 if (pTcon->unix_ext)
1098 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
1100 cifs_sb_source->local_nls,
1101 cifs_sb_source->mnt_cifs_flags &
1102 CIFS_MOUNT_MAP_SPECIAL_CHR);
1103 /* else rc is still EEXIST so will fall through to
1104 unlink the target and retry rename */
1106 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1108 cifs_sb_target->local_nls,
1109 /* remap based on source sb */
1110 cifs_sb_source->mnt_cifs_flags &
1111 CIFS_MOUNT_MAP_SPECIAL_CHR);
1114 (info_buf_source->UniqueId ==
1115 info_buf_target->UniqueId)) {
1116 /* do not rename since the files are hardlinked which
1119 /* we either can not tell the files are hardlinked
1120 (as with Windows servers) or files are not
1121 hardlinked so delete the target manually before
1122 renaming to follow POSIX rather than Windows
1124 cifs_unlink(target_inode, target_direntry);
1125 rc = CIFSSMBRename(xid, pTcon, fromName,
1127 cifs_sb_source->local_nls,
1128 cifs_sb_source->mnt_cifs_flags
1129 & CIFS_MOUNT_MAP_SPECIAL_CHR);
1131 kfree(info_buf_source);
1132 } /* if we can not get memory just leave rc as EEXIST */
1136 cFYI(1, ("rename rc %d", rc));
1138 if ((rc == -EIO) || (rc == -EEXIST)) {
1142 /* BB FIXME Is Generic Read correct for rename? */
1143 /* if renaming directory - we should not say CREATE_NOT_DIR,
1144 need to test renaming open directory, also GENERIC_READ
1145 might not right be right access to request */
1146 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1147 CREATE_NOT_DIR, &netfid, &oplock, NULL,
1148 cifs_sb_source->local_nls,
1149 cifs_sb_source->mnt_cifs_flags &
1150 CIFS_MOUNT_MAP_SPECIAL_CHR);
1152 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
1153 cifs_sb_source->local_nls,
1154 cifs_sb_source->mnt_cifs_flags &
1155 CIFS_MOUNT_MAP_SPECIAL_CHR);
1156 CIFSSMBClose(xid, pTcon, netfid);
1167 int cifs_revalidate(struct dentry *direntry)
1170 int rc = 0, wbrc = 0;
1172 struct cifs_sb_info *cifs_sb;
1173 struct cifsInodeInfo *cifsInode;
1175 struct timespec local_mtime;
1176 int invalidate_inode = FALSE;
1178 if (direntry->d_inode == NULL)
1181 cifsInode = CIFS_I(direntry->d_inode);
1183 if (cifsInode == NULL)
1186 /* no sense revalidating inode info on file that no one can write */
1187 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1192 cifs_sb = CIFS_SB(direntry->d_sb);
1194 /* can not safely grab the rename sem here if rename calls revalidate
1195 since that would deadlock */
1196 full_path = build_path_from_dentry(direntry);
1197 if (full_path == NULL) {
1201 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1202 "jiffies %ld", full_path, direntry->d_inode,
1203 direntry->d_inode->i_count.counter, direntry,
1204 direntry->d_time, jiffies));
1206 if (cifsInode->time == 0) {
1207 /* was set to zero previously to force revalidate */
1208 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1209 lookupCacheEnabled) {
1210 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1211 (direntry->d_inode->i_nlink == 1)) {
1216 cFYI(1, ("Have to revalidate file due to hardlinks"));
1220 /* save mtime and size */
1221 local_mtime = direntry->d_inode->i_mtime;
1222 local_size = direntry->d_inode->i_size;
1224 if (cifs_sb->tcon->unix_ext) {
1225 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
1226 direntry->d_sb, xid);
1228 cFYI(1, ("error on getting revalidate info %d", rc));
1229 /* if (rc != -ENOENT)
1230 rc = 0; */ /* BB should we cache info on
1234 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
1235 direntry->d_sb, xid, NULL);
1237 cFYI(1, ("error on getting revalidate info %d", rc));
1238 /* if (rc != -ENOENT)
1239 rc = 0; */ /* BB should we cache info on
1243 /* should we remap certain errors, access denied?, to zero */
1245 /* if not oplocked, we invalidate inode pages if mtime or file size
1246 had changed on server */
1248 if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
1249 (local_size == direntry->d_inode->i_size)) {
1250 cFYI(1, ("cifs_revalidate - inode unchanged"));
1252 /* file may have changed on server */
1253 if (cifsInode->clientCanCacheRead) {
1254 /* no need to invalidate inode pages since we were the
1255 only ones who could have modified the file and the
1256 server copy is staler than ours */
1258 invalidate_inode = TRUE;
1262 /* can not grab this sem since kernel filesys locking documentation
1263 indicates i_mutex may be taken by the kernel on lookup and rename
1264 which could deadlock if we grab the i_mutex here as well */
1265 /* mutex_lock(&direntry->d_inode->i_mutex);*/
1266 /* need to write out dirty pages here */
1267 if (direntry->d_inode->i_mapping) {
1268 /* do we need to lock inode until after invalidate completes
1270 wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping);
1272 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
1274 if (invalidate_inode) {
1275 /* shrink_dcache not necessary now that cifs dentry ops
1276 are exported for negative dentries */
1277 /* if (S_ISDIR(direntry->d_inode->i_mode))
1278 shrink_dcache_parent(direntry); */
1279 if (S_ISREG(direntry->d_inode->i_mode)) {
1280 if (direntry->d_inode->i_mapping)
1281 wbrc = filemap_fdatawait(direntry->d_inode->i_mapping);
1283 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
1284 /* may eventually have to do this for open files too */
1285 if (list_empty(&(cifsInode->openFileList))) {
1286 /* changed on server - flush read ahead pages */
1287 cFYI(1, ("Invalidating read ahead data on "
1289 invalidate_remote_inode(direntry->d_inode);
1293 /* mutex_unlock(&direntry->d_inode->i_mutex); */
1300 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1303 int err = cifs_revalidate(dentry);
1305 generic_fillattr(dentry->d_inode, stat);
1306 stat->blksize = CIFS_MAX_MSGSIZE;
1311 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1313 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1314 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1318 page = grab_cache_page(mapping, index);
1322 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1324 page_cache_release(page);
1328 static int cifs_vmtruncate(struct inode *inode, loff_t offset)
1330 struct address_space *mapping = inode->i_mapping;
1331 unsigned long limit;
1333 spin_lock(&inode->i_lock);
1334 if (inode->i_size < offset)
1337 * truncation of in-use swapfiles is disallowed - it would cause
1338 * subsequent swapout to scribble on the now-freed blocks.
1340 if (IS_SWAPFILE(inode)) {
1341 spin_unlock(&inode->i_lock);
1344 i_size_write(inode, offset);
1345 spin_unlock(&inode->i_lock);
1347 * unmap_mapping_range is called twice, first simply for efficiency
1348 * so that truncate_inode_pages does fewer single-page unmaps. However
1349 * after this first call, and before truncate_inode_pages finishes,
1350 * it is possible for private pages to be COWed, which remain after
1351 * truncate_inode_pages finishes, hence the second unmap_mapping_range
1352 * call must be made for correctness.
1354 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1355 truncate_inode_pages(mapping, offset);
1356 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1360 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
1361 if (limit != RLIM_INFINITY && offset > limit) {
1362 spin_unlock(&inode->i_lock);
1365 if (offset > inode->i_sb->s_maxbytes) {
1366 spin_unlock(&inode->i_lock);
1369 i_size_write(inode, offset);
1370 spin_unlock(&inode->i_lock);
1372 if (inode->i_op && inode->i_op->truncate)
1373 inode->i_op->truncate(inode);
1376 send_sig(SIGXFSZ, current, 0);
1383 int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1386 struct cifs_sb_info *cifs_sb;
1387 struct cifsTconInfo *pTcon;
1388 char *full_path = NULL;
1390 struct cifsFileInfo *open_file = NULL;
1391 FILE_BASIC_INFO time_buf;
1392 int set_time = FALSE;
1393 int set_dosattr = FALSE;
1394 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1395 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1396 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1397 struct cifsInodeInfo *cifsInode;
1401 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
1402 direntry->d_name.name, attrs->ia_valid));
1404 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
1405 pTcon = cifs_sb->tcon;
1407 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
1408 /* check if we have permission to change attrs */
1409 rc = inode_change_ok(direntry->d_inode, attrs);
1417 full_path = build_path_from_dentry(direntry);
1418 if (full_path == NULL) {
1422 cifsInode = CIFS_I(direntry->d_inode);
1424 if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
1426 Flush data before changing file size or changing the last
1427 write time of the file on the server. If the
1428 flush returns error, store it to report later and continue.
1429 BB: This should be smarter. Why bother flushing pages that
1430 will be truncated anyway? Also, should we error out here if
1431 the flush returns error?
1433 rc = filemap_write_and_wait(direntry->d_inode->i_mapping);
1435 CIFS_I(direntry->d_inode)->write_behind_rc = rc;
1440 if (attrs->ia_valid & ATTR_SIZE) {
1441 /* To avoid spurious oplock breaks from server, in the case of
1442 inodes that we already have open, avoid doing path based
1443 setting of file size if we can do it by handle.
1444 This keeps our caching token (oplock) and avoids timeouts
1445 when the local oplock break takes longer to flush
1446 writebehind data than the SMB timeout for the SetPathInfo
1447 request would allow */
1449 open_file = find_writable_file(cifsInode);
1451 __u16 nfid = open_file->netfid;
1452 __u32 npid = open_file->pid;
1453 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1455 atomic_dec(&open_file->wrtPending);
1456 cFYI(1, ("SetFSize for attrs rc = %d", rc));
1457 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1458 unsigned int bytes_written;
1459 rc = CIFSSMBWrite(xid, pTcon,
1460 nfid, 0, attrs->ia_size,
1461 &bytes_written, NULL, NULL,
1462 1 /* 45 seconds */);
1463 cFYI(1, ("Wrt seteof rc %d", rc));
1469 /* Set file size by pathname rather than by handle
1470 either because no valid, writeable file handle for
1471 it was found or because there was an error setting
1473 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1474 attrs->ia_size, FALSE,
1476 cifs_sb->mnt_cifs_flags &
1477 CIFS_MOUNT_MAP_SPECIAL_CHR);
1478 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
1479 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1483 rc = SMBLegacyOpen(xid, pTcon, full_path,
1485 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1486 CREATE_NOT_DIR, &netfid, &oplock,
1487 NULL, cifs_sb->local_nls,
1488 cifs_sb->mnt_cifs_flags &
1489 CIFS_MOUNT_MAP_SPECIAL_CHR);
1491 unsigned int bytes_written;
1492 rc = CIFSSMBWrite(xid, pTcon,
1495 &bytes_written, NULL,
1496 NULL, 1 /* 45 sec */);
1497 cFYI(1, ("wrt seteof rc %d", rc));
1498 CIFSSMBClose(xid, pTcon, netfid);
1504 /* Server is ok setting allocation size implicitly - no need
1506 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1507 cifs_sb->local_nls);
1511 rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
1512 cifs_truncate_page(direntry->d_inode->i_mapping,
1513 direntry->d_inode->i_size);
1515 goto cifs_setattr_exit;
1517 if (attrs->ia_valid & ATTR_UID) {
1518 cFYI(1, ("UID changed to %d", attrs->ia_uid));
1519 uid = attrs->ia_uid;
1521 if (attrs->ia_valid & ATTR_GID) {
1522 cFYI(1, ("GID changed to %d", attrs->ia_gid));
1523 gid = attrs->ia_gid;
1526 time_buf.Attributes = 0;
1528 /* skip mode change if it's just for clearing setuid/setgid */
1529 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
1530 attrs->ia_valid &= ~ATTR_MODE;
1532 if (attrs->ia_valid & ATTR_MODE) {
1533 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
1534 mode = attrs->ia_mode;
1537 if ((pTcon->unix_ext)
1538 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1539 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
1540 0 /* dev_t */, cifs_sb->local_nls,
1541 cifs_sb->mnt_cifs_flags &
1542 CIFS_MOUNT_MAP_SPECIAL_CHR);
1543 else if (attrs->ia_valid & ATTR_MODE) {
1545 #ifdef CONFIG_CIFS_EXPERIMENTAL
1546 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1547 rc = mode_to_acl(direntry->d_inode, full_path, mode);
1548 else if ((mode & S_IWUGO) == 0) {
1550 if ((mode & S_IWUGO) == 0) {
1553 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1555 time_buf.Attributes =
1556 cpu_to_le32(cifsInode->cifsAttrs |
1559 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1560 /* If file is readonly on server, we would
1561 not be able to write to it - so if any write
1562 bit is enabled for user or group or other we
1563 need to at least try to remove r/o dos attr */
1565 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1567 /* Windows ignores set to zero */
1568 if (time_buf.Attributes == 0)
1569 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
1571 #ifdef CONFIG_CIFS_EXPERIMENTAL
1572 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1573 mode_to_acl(direntry->d_inode, full_path, mode);
1577 if (attrs->ia_valid & ATTR_ATIME) {
1579 time_buf.LastAccessTime =
1580 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1582 time_buf.LastAccessTime = 0;
1584 if (attrs->ia_valid & ATTR_MTIME) {
1586 time_buf.LastWriteTime =
1587 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1589 time_buf.LastWriteTime = 0;
1590 /* Do not set ctime explicitly unless other time
1591 stamps are changed explicitly (i.e. by utime()
1592 since we would then have a mix of client and
1595 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
1597 /* Although Samba throws this field away
1598 it may be useful to Windows - but we do
1599 not want to set ctime unless some other
1600 timestamp is changing */
1601 cFYI(1, ("CIFS - CTIME changed"));
1602 time_buf.ChangeTime =
1603 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1605 time_buf.ChangeTime = 0;
1607 if (set_time || set_dosattr) {
1608 time_buf.CreationTime = 0; /* do not change */
1609 /* In the future we should experiment - try setting timestamps
1610 via Handle (SetFileInfo) instead of by path */
1611 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1612 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
1614 cifs_sb->mnt_cifs_flags &
1615 CIFS_MOUNT_MAP_SPECIAL_CHR);
1619 if (rc == -EOPNOTSUPP) {
1623 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1624 "times not supported by this server"));
1625 /* BB we could scan to see if we already have it open
1626 and pass in pid of opener to function */
1627 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1628 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1629 CREATE_NOT_DIR, &netfid, &oplock,
1630 NULL, cifs_sb->local_nls,
1631 cifs_sb->mnt_cifs_flags &
1632 CIFS_MOUNT_MAP_SPECIAL_CHR);
1634 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1636 CIFSSMBClose(xid, pTcon, netfid);
1638 /* BB For even older servers we could convert time_buf
1639 into old DOS style which uses two second
1642 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
1643 &time_buf, cifs_sb->local_nls); */
1646 /* Even if error on time set, no sense failing the call if
1647 the server would set the time to a reasonable value anyway,
1648 and this check ensures that we are not being called from
1649 sys_utimes in which case we ought to fail the call back to
1650 the user when the server rejects the call */
1651 if ((rc) && (attrs->ia_valid &
1652 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1656 /* do not need local check to inode_check_ok since the server does
1659 rc = inode_setattr(direntry->d_inode, attrs);
1667 void cifs_delete_inode(struct inode *inode)
1669 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
1670 /* may have to add back in if and when safe distributed caching of
1671 directories added e.g. via FindNotify */