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);
127 unsigned long oldtime = cifs_i->time;
129 cifs_revalidate_cache(inode, fattr);
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 cFYI(1, "inode 0x%p old_time=%ld new_time=%ld", inode,
152 oldtime, cifs_i->time);
154 cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING;
156 cifs_i->server_eof = fattr->cf_eof;
158 * Can't safely change the file size here if the client is writing to
159 * it due to potential races.
161 spin_lock(&inode->i_lock);
162 if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) {
163 i_size_write(inode, fattr->cf_eof);
166 * i_blocks is not related to (i_size / i_blksize),
167 * but instead 512 byte (2**9) size is required for
168 * calculating num blocks.
170 inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9;
172 spin_unlock(&inode->i_lock);
174 if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL)
175 inode->i_flags |= S_AUTOMOUNT;
176 if (inode->i_state & I_NEW)
181 cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr)
183 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
185 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM)
188 fattr->cf_uniqueid = iunique(sb, ROOT_I);
191 /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */
193 cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info,
194 struct cifs_sb_info *cifs_sb)
196 memset(fattr, 0, sizeof(*fattr));
197 fattr->cf_uniqueid = le64_to_cpu(info->UniqueId);
198 fattr->cf_bytes = le64_to_cpu(info->NumOfBytes);
199 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
201 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
202 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime);
203 fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange);
204 fattr->cf_mode = le64_to_cpu(info->Permissions);
207 * Since we set the inode type below we need to mask off
208 * to avoid strange results if bits set above.
210 fattr->cf_mode &= ~S_IFMT;
211 switch (le32_to_cpu(info->Type)) {
213 fattr->cf_mode |= S_IFREG;
214 fattr->cf_dtype = DT_REG;
217 fattr->cf_mode |= S_IFLNK;
218 fattr->cf_dtype = DT_LNK;
221 fattr->cf_mode |= S_IFDIR;
222 fattr->cf_dtype = DT_DIR;
225 fattr->cf_mode |= S_IFCHR;
226 fattr->cf_dtype = DT_CHR;
227 fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor),
228 le64_to_cpu(info->DevMinor) & MINORMASK);
231 fattr->cf_mode |= S_IFBLK;
232 fattr->cf_dtype = DT_BLK;
233 fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor),
234 le64_to_cpu(info->DevMinor) & MINORMASK);
237 fattr->cf_mode |= S_IFIFO;
238 fattr->cf_dtype = DT_FIFO;
241 fattr->cf_mode |= S_IFSOCK;
242 fattr->cf_dtype = DT_SOCK;
245 /* safest to call it a file if we do not know */
246 fattr->cf_mode |= S_IFREG;
247 fattr->cf_dtype = DT_REG;
248 cFYI(1, "unknown type %d", le32_to_cpu(info->Type));
252 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
253 fattr->cf_uid = cifs_sb->mnt_uid;
255 fattr->cf_uid = le64_to_cpu(info->Uid);
257 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
258 fattr->cf_gid = cifs_sb->mnt_gid;
260 fattr->cf_gid = le64_to_cpu(info->Gid);
262 fattr->cf_nlink = le64_to_cpu(info->Nlinks);
266 * Fill a cifs_fattr struct with fake inode info.
268 * Needed to setup cifs_fattr data for the directory which is the
269 * junction to the new submount (ie to setup the fake directory
270 * which represents a DFS referral).
273 cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb)
275 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
277 cFYI(1, "creating fake fattr for DFS referral");
279 memset(fattr, 0, sizeof(*fattr));
280 fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU;
281 fattr->cf_uid = cifs_sb->mnt_uid;
282 fattr->cf_gid = cifs_sb->mnt_gid;
283 fattr->cf_atime = CURRENT_TIME;
284 fattr->cf_ctime = CURRENT_TIME;
285 fattr->cf_mtime = CURRENT_TIME;
287 fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL;
290 int cifs_get_file_info_unix(struct file *filp)
294 FILE_UNIX_BASIC_INFO find_data;
295 struct cifs_fattr fattr;
296 struct inode *inode = filp->f_path.dentry->d_inode;
297 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
298 struct cifsFileInfo *cfile = filp->private_data;
299 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
302 rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data);
304 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
305 } else if (rc == -EREMOTE) {
306 cifs_create_dfs_fattr(&fattr, inode->i_sb);
310 cifs_fattr_to_inode(inode, &fattr);
315 int cifs_get_inode_info_unix(struct inode **pinode,
316 const unsigned char *full_path,
317 struct super_block *sb, int xid)
320 FILE_UNIX_BASIC_INFO find_data;
321 struct cifs_fattr fattr;
322 struct cifs_tcon *tcon;
323 struct tcon_link *tlink;
324 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
326 cFYI(1, "Getting info on %s", full_path);
328 tlink = cifs_sb_tlink(cifs_sb);
330 return PTR_ERR(tlink);
331 tcon = tlink_tcon(tlink);
333 /* could have done a find first instead but this returns more info */
334 rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data,
335 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
336 CIFS_MOUNT_MAP_SPECIAL_CHR);
337 cifs_put_tlink(tlink);
340 cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb);
341 } else if (rc == -EREMOTE) {
342 cifs_create_dfs_fattr(&fattr, sb);
348 /* check for Minshall+French symlinks */
349 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
350 int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
352 cFYI(1, "CIFSCheckMFSymlink: %d", tmprc);
355 if (*pinode == NULL) {
357 cifs_fill_uniqueid(sb, &fattr);
358 *pinode = cifs_iget(sb, &fattr);
362 /* we already have inode, update it */
363 cifs_fattr_to_inode(*pinode, &fattr);
370 cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path,
371 struct cifs_sb_info *cifs_sb, int xid)
376 struct tcon_link *tlink;
377 struct cifs_tcon *tcon;
378 struct cifs_io_parms io_parms;
380 unsigned int bytes_read;
385 fattr->cf_mode &= ~S_IFMT;
387 if (fattr->cf_eof == 0) {
388 fattr->cf_mode |= S_IFIFO;
389 fattr->cf_dtype = DT_FIFO;
391 } else if (fattr->cf_eof < 8) {
392 fattr->cf_mode |= S_IFREG;
393 fattr->cf_dtype = DT_REG;
394 return -EINVAL; /* EOPNOTSUPP? */
397 tlink = cifs_sb_tlink(cifs_sb);
399 return PTR_ERR(tlink);
400 tcon = tlink_tcon(tlink);
402 rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ,
403 CREATE_NOT_DIR, &netfid, &oplock, NULL,
405 cifs_sb->mnt_cifs_flags &
406 CIFS_MOUNT_MAP_SPECIAL_CHR);
408 int buf_type = CIFS_NO_BUFFER;
410 io_parms.netfid = netfid;
411 io_parms.pid = current->tgid;
412 io_parms.tcon = tcon;
414 io_parms.length = 24;
415 rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf,
417 if ((rc == 0) && (bytes_read >= 8)) {
418 if (memcmp("IntxBLK", pbuf, 8) == 0) {
419 cFYI(1, "Block device");
420 fattr->cf_mode |= S_IFBLK;
421 fattr->cf_dtype = DT_BLK;
422 if (bytes_read == 24) {
423 /* we have enough to decode dev num */
424 __u64 mjr; /* major */
425 __u64 mnr; /* minor */
426 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
427 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
428 fattr->cf_rdev = MKDEV(mjr, mnr);
430 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
431 cFYI(1, "Char device");
432 fattr->cf_mode |= S_IFCHR;
433 fattr->cf_dtype = DT_CHR;
434 if (bytes_read == 24) {
435 /* we have enough to decode dev num */
436 __u64 mjr; /* major */
437 __u64 mnr; /* minor */
438 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
439 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
440 fattr->cf_rdev = MKDEV(mjr, mnr);
442 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
444 fattr->cf_mode |= S_IFLNK;
445 fattr->cf_dtype = DT_LNK;
447 fattr->cf_mode |= S_IFREG; /* file? */
448 fattr->cf_dtype = DT_REG;
452 fattr->cf_mode |= S_IFREG; /* then it is a file */
453 fattr->cf_dtype = DT_REG;
454 rc = -EOPNOTSUPP; /* or some unknown SFU type */
456 CIFSSMBClose(xid, tcon, netfid);
458 cifs_put_tlink(tlink);
462 #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
465 * Fetch mode bits as provided by SFU.
467 * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ?
469 static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
470 struct cifs_sb_info *cifs_sb, int xid)
472 #ifdef CONFIG_CIFS_XATTR
476 struct tcon_link *tlink;
477 struct cifs_tcon *tcon;
479 tlink = cifs_sb_tlink(cifs_sb);
481 return PTR_ERR(tlink);
482 tcon = tlink_tcon(tlink);
484 rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS",
485 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
486 cifs_sb->mnt_cifs_flags &
487 CIFS_MOUNT_MAP_SPECIAL_CHR);
488 cifs_put_tlink(tlink);
492 mode = le32_to_cpu(*((__le32 *)ea_value));
493 fattr->cf_mode &= ~SFBITS_MASK;
494 cFYI(1, "special bits 0%o org mode 0%o", mode,
496 fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode;
497 cFYI(1, "special mode bits 0%o", mode);
506 /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */
508 cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
509 struct cifs_sb_info *cifs_sb, bool adjust_tz)
511 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
513 memset(fattr, 0, sizeof(*fattr));
514 fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
515 if (info->DeletePending)
516 fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING;
518 if (info->LastAccessTime)
519 fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
521 fattr->cf_atime = CURRENT_TIME;
523 fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
524 fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
527 fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
528 fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
531 fattr->cf_eof = le64_to_cpu(info->EndOfFile);
532 fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
533 fattr->cf_createtime = le64_to_cpu(info->CreationTime);
535 if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
536 fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
537 fattr->cf_dtype = DT_DIR;
539 fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
540 fattr->cf_dtype = DT_REG;
542 /* clear write bits if ATTR_READONLY is set */
543 if (fattr->cf_cifsattrs & ATTR_READONLY)
544 fattr->cf_mode &= ~(S_IWUGO);
547 fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
549 fattr->cf_uid = cifs_sb->mnt_uid;
550 fattr->cf_gid = cifs_sb->mnt_gid;
553 int cifs_get_file_info(struct file *filp)
557 FILE_ALL_INFO find_data;
558 struct cifs_fattr fattr;
559 struct inode *inode = filp->f_path.dentry->d_inode;
560 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
561 struct cifsFileInfo *cfile = filp->private_data;
562 struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
565 rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);
568 cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false);
571 cifs_create_dfs_fattr(&fattr, inode->i_sb);
577 * FIXME: legacy server -- fall back to path-based call?
578 * for now, just skip revalidating and mark inode for
582 CIFS_I(inode)->time = 0;
588 * don't bother with SFU junk here -- just mark inode as needing
591 fattr.cf_uniqueid = CIFS_I(inode)->uniqueid;
592 fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;
593 cifs_fattr_to_inode(inode, &fattr);
599 int cifs_get_inode_info(struct inode **pinode,
600 const unsigned char *full_path, FILE_ALL_INFO *pfindData,
601 struct super_block *sb, int xid, const __u16 *pfid)
604 struct cifs_tcon *pTcon;
605 struct tcon_link *tlink;
606 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
608 bool adjustTZ = false;
609 struct cifs_fattr fattr;
611 tlink = cifs_sb_tlink(cifs_sb);
613 return PTR_ERR(tlink);
614 pTcon = tlink_tcon(tlink);
616 cFYI(1, "Getting info on %s", full_path);
618 if ((pfindData == NULL) && (*pinode != NULL)) {
619 if (CIFS_I(*pinode)->clientCanCacheRead) {
620 cFYI(1, "No need to revalidate cached inode sizes");
625 /* if file info not passed in then get it from server */
626 if (pfindData == NULL) {
627 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
632 pfindData = (FILE_ALL_INFO *)buf;
634 /* could do find first instead but this returns more info */
635 rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData,
637 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
638 CIFS_MOUNT_MAP_SPECIAL_CHR);
639 /* BB optimize code so we do not make the above call
640 when server claims no NT SMB support and the above call
641 failed at least once - set flag in tcon or mount */
642 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
643 rc = SMBQueryInformation(xid, pTcon, full_path,
644 pfindData, cifs_sb->local_nls,
645 cifs_sb->mnt_cifs_flags &
646 CIFS_MOUNT_MAP_SPECIAL_CHR);
652 cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *) pfindData,
654 } else if (rc == -EREMOTE) {
655 cifs_create_dfs_fattr(&fattr, sb);
662 * If an inode wasn't passed in, then get the inode number
664 * Is an i_ino of zero legal? Can we use that to check if the server
665 * supports returning inode numbers? Are there other sanity checks we
666 * can use to ensure that the server is really filling in that field?
668 * We can not use the IndexNumber field by default from Windows or
669 * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA
670 * CIFS spec claims that this value is unique within the scope of a
671 * share, and the windows docs hint that it's actually unique
674 * There may be higher info levels that work but are there Windows
675 * server or network appliances for which IndexNumber field is not
678 if (*pinode == NULL) {
679 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
682 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
683 full_path, &fattr.cf_uniqueid,
685 cifs_sb->mnt_cifs_flags &
686 CIFS_MOUNT_MAP_SPECIAL_CHR);
687 if (rc1 || !fattr.cf_uniqueid) {
688 cFYI(1, "GetSrvInodeNum rc %d", rc1);
689 fattr.cf_uniqueid = iunique(sb, ROOT_I);
690 cifs_autodisable_serverino(cifs_sb);
693 fattr.cf_uniqueid = iunique(sb, ROOT_I);
696 fattr.cf_uniqueid = CIFS_I(*pinode)->uniqueid;
699 /* query for SFU type info if supported and needed */
700 if (fattr.cf_cifsattrs & ATTR_SYSTEM &&
701 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
702 tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid);
704 cFYI(1, "cifs_sfu_type failed: %d", tmprc);
707 #ifdef CONFIG_CIFS_ACL
708 /* fill in 0777 bits from ACL */
709 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
710 rc = cifs_acl_to_fattr(cifs_sb, &fattr, *pinode, full_path,
713 cFYI(1, "%s: Getting ACL failed with error: %d",
718 #endif /* CONFIG_CIFS_ACL */
720 /* fill in remaining high mode bits e.g. SUID, VTX */
721 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)
722 cifs_sfu_mode(&fattr, full_path, cifs_sb, xid);
724 /* check for Minshall+French symlinks */
725 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) {
726 tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid);
728 cFYI(1, "CIFSCheckMFSymlink: %d", tmprc);
732 *pinode = cifs_iget(sb, &fattr);
736 cifs_fattr_to_inode(*pinode, &fattr);
741 cifs_put_tlink(tlink);
745 static const struct inode_operations cifs_ipc_inode_ops = {
746 .lookup = cifs_lookup,
749 char *cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
750 struct cifs_tcon *tcon)
752 int pplen = vol->prepath ? strlen(vol->prepath) : 0;
754 char *full_path = NULL;
756 /* if no prefix path, simply set path to the root of share to "" */
758 full_path = kmalloc(1, GFP_KERNEL);
764 if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
765 dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
769 full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
770 if (full_path == NULL)
774 strncpy(full_path, tcon->treeName, dfsplen);
775 strncpy(full_path + dfsplen, vol->prepath, pplen);
776 convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
777 full_path[dfsplen + pplen] = 0; /* add trailing null */
782 cifs_find_inode(struct inode *inode, void *opaque)
784 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
786 /* don't match inode with different uniqueid */
787 if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid)
790 /* use createtime like an i_generation field */
791 if (CIFS_I(inode)->createtime != fattr->cf_createtime)
794 /* don't match inode of different type */
795 if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT))
798 /* if it's not a directory or has no dentries, then flag it */
799 if (S_ISDIR(inode->i_mode) && !list_empty(&inode->i_dentry))
800 fattr->cf_flags |= CIFS_FATTR_INO_COLLISION;
806 cifs_init_inode(struct inode *inode, void *opaque)
808 struct cifs_fattr *fattr = (struct cifs_fattr *) opaque;
810 CIFS_I(inode)->uniqueid = fattr->cf_uniqueid;
811 CIFS_I(inode)->createtime = fattr->cf_createtime;
816 * walk dentry list for an inode and report whether it has aliases that
817 * are hashed. We use this to determine if a directory inode can actually
821 inode_has_hashed_dentries(struct inode *inode)
823 struct dentry *dentry;
825 spin_lock(&inode->i_lock);
826 list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
827 if (!d_unhashed(dentry) || IS_ROOT(dentry)) {
828 spin_unlock(&inode->i_lock);
832 spin_unlock(&inode->i_lock);
836 /* Given fattrs, get a corresponding inode */
838 cifs_iget(struct super_block *sb, struct cifs_fattr *fattr)
844 cFYI(1, "looking for uniqueid=%llu", fattr->cf_uniqueid);
846 /* hash down to 32-bits on 32-bit arch */
847 hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid);
849 inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr);
851 /* was there a potentially problematic inode collision? */
852 if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) {
853 fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION;
855 if (inode_has_hashed_dentries(inode)) {
856 cifs_autodisable_serverino(CIFS_SB(sb));
858 fattr->cf_uniqueid = iunique(sb, ROOT_I);
859 goto retry_iget5_locked;
863 cifs_fattr_to_inode(inode, fattr);
864 if (sb->s_flags & MS_NOATIME)
865 inode->i_flags |= S_NOATIME | S_NOCMTIME;
866 if (inode->i_state & I_NEW) {
868 if (S_ISREG(inode->i_mode))
869 inode->i_data.backing_dev_info = sb->s_bdi;
870 #ifdef CONFIG_CIFS_FSCACHE
871 /* initialize per-inode cache cookie pointer */
872 CIFS_I(inode)->fscache = NULL;
874 unlock_new_inode(inode);
881 /* gets root inode */
882 struct inode *cifs_root_iget(struct super_block *sb)
885 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
886 struct inode *inode = NULL;
888 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
892 rc = cifs_get_inode_info_unix(&inode, "", sb, xid);
894 rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL);
901 #ifdef CONFIG_CIFS_FSCACHE
902 /* populate tcon->resource_id */
903 tcon->resource_id = CIFS_I(inode)->uniqueid;
906 if (rc && tcon->ipc) {
907 cFYI(1, "ipc connection - fake read inode");
908 inode->i_mode |= S_IFDIR;
910 inode->i_op = &cifs_ipc_inode_ops;
911 inode->i_fop = &simple_dir_operations;
912 inode->i_uid = cifs_sb->mnt_uid;
913 inode->i_gid = cifs_sb->mnt_gid;
920 /* can not call macro FreeXid here since in a void func
921 * TODO: This is no longer true
928 cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid,
929 char *full_path, __u32 dosattr)
935 bool set_time = false;
936 struct cifsFileInfo *open_file;
937 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
938 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
939 struct tcon_link *tlink = NULL;
940 struct cifs_tcon *pTcon;
941 FILE_BASIC_INFO info_buf;
946 if (attrs->ia_valid & ATTR_ATIME) {
948 info_buf.LastAccessTime =
949 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
951 info_buf.LastAccessTime = 0;
953 if (attrs->ia_valid & ATTR_MTIME) {
955 info_buf.LastWriteTime =
956 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
958 info_buf.LastWriteTime = 0;
961 * Samba throws this field away, but windows may actually use it.
962 * Do not set ctime unless other time stamps are changed explicitly
963 * (i.e. by utimes()) since we would then have a mix of client and
966 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
967 cFYI(1, "CIFS - CTIME changed");
968 info_buf.ChangeTime =
969 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
971 info_buf.ChangeTime = 0;
973 info_buf.CreationTime = 0; /* don't change */
974 info_buf.Attributes = cpu_to_le32(dosattr);
977 * If the file is already open for write, just use that fileid
979 open_file = find_writable_file(cifsInode, true);
981 netfid = open_file->netfid;
982 netpid = open_file->pid;
983 pTcon = tlink_tcon(open_file->tlink);
984 goto set_via_filehandle;
987 tlink = cifs_sb_tlink(cifs_sb);
993 pTcon = tlink_tcon(tlink);
996 * NT4 apparently returns success on this call, but it doesn't
999 if (!(pTcon->ses->flags & CIFS_SES_NT4)) {
1000 rc = CIFSSMBSetPathInfo(xid, pTcon, full_path,
1001 &info_buf, cifs_sb->local_nls,
1002 cifs_sb->mnt_cifs_flags &
1003 CIFS_MOUNT_MAP_SPECIAL_CHR);
1005 cifsInode->cifsAttrs = dosattr;
1007 } else if (rc != -EOPNOTSUPP && rc != -EINVAL)
1011 cFYI(1, "calling SetFileInfo since SetPathInfo for "
1012 "times not supported by this server");
1013 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1014 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1015 CREATE_NOT_DIR, &netfid, &oplock,
1016 NULL, cifs_sb->local_nls,
1017 cifs_sb->mnt_cifs_flags &
1018 CIFS_MOUNT_MAP_SPECIAL_CHR);
1026 netpid = current->tgid;
1029 rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid);
1031 cifsInode->cifsAttrs = dosattr;
1033 if (open_file == NULL)
1034 CIFSSMBClose(xid, pTcon, netfid);
1036 cifsFileInfo_put(open_file);
1039 cifs_put_tlink(tlink);
1044 * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
1045 * and rename it to a random name that hopefully won't conflict with
1049 cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid)
1054 struct inode *inode = dentry->d_inode;
1055 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1056 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1057 struct tcon_link *tlink;
1058 struct cifs_tcon *tcon;
1059 __u32 dosattr, origattr;
1060 FILE_BASIC_INFO *info_buf = NULL;
1062 tlink = cifs_sb_tlink(cifs_sb);
1064 return PTR_ERR(tlink);
1065 tcon = tlink_tcon(tlink);
1067 rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
1068 DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
1069 &netfid, &oplock, NULL, cifs_sb->local_nls,
1070 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1074 origattr = cifsInode->cifsAttrs;
1076 origattr |= ATTR_NORMAL;
1078 dosattr = origattr & ~ATTR_READONLY;
1080 dosattr |= ATTR_NORMAL;
1081 dosattr |= ATTR_HIDDEN;
1083 /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */
1084 if (dosattr != origattr) {
1085 info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL);
1086 if (info_buf == NULL) {
1090 info_buf->Attributes = cpu_to_le32(dosattr);
1091 rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
1093 /* although we would like to mark the file hidden
1094 if that fails we will still try to rename it */
1096 cifsInode->cifsAttrs = dosattr;
1098 dosattr = origattr; /* since not able to change them */
1101 /* rename the file */
1102 rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls,
1103 cifs_sb->mnt_cifs_flags &
1104 CIFS_MOUNT_MAP_SPECIAL_CHR);
1110 /* try to set DELETE_ON_CLOSE */
1111 if (!cifsInode->delete_pending) {
1112 rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid,
1115 * some samba versions return -ENOENT when we try to set the
1116 * file disposition here. Likely a samba bug, but work around
1117 * it for now. This means that some cifsXXX files may hang
1118 * around after they shouldn't.
1120 * BB: remove this hack after more servers have the fix
1128 cifsInode->delete_pending = true;
1132 CIFSSMBClose(xid, tcon, netfid);
1135 cifs_put_tlink(tlink);
1139 * reset everything back to the original state. Don't bother
1140 * dealing with errors here since we can't do anything about
1144 CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name,
1145 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
1146 CIFS_MOUNT_MAP_SPECIAL_CHR);
1148 if (dosattr != origattr) {
1149 info_buf->Attributes = cpu_to_le32(origattr);
1150 if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid,
1152 cifsInode->cifsAttrs = origattr;
1160 * If dentry->d_inode is null (usually meaning the cached dentry
1161 * is a negative dentry) then we would attempt a standard SMB delete, but
1162 * if that fails we can not attempt the fall back mechanisms on EACCESS
1163 * but will return the EACCESS to the caller. Note that the VFS does not call
1164 * unlink on negative dentries currently.
1166 int cifs_unlink(struct inode *dir, struct dentry *dentry)
1170 char *full_path = NULL;
1171 struct inode *inode = dentry->d_inode;
1172 struct cifsInodeInfo *cifs_inode;
1173 struct super_block *sb = dir->i_sb;
1174 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
1175 struct tcon_link *tlink;
1176 struct cifs_tcon *tcon;
1177 struct iattr *attrs = NULL;
1178 __u32 dosattr = 0, origattr = 0;
1180 cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry);
1182 tlink = cifs_sb_tlink(cifs_sb);
1184 return PTR_ERR(tlink);
1185 tcon = tlink_tcon(tlink);
1189 /* Unlink can be called from rename so we can not take the
1190 * sb->s_vfs_rename_mutex here */
1191 full_path = build_path_from_dentry(dentry);
1192 if (full_path == NULL) {
1197 if ((tcon->ses->capabilities & CAP_UNIX) &&
1198 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1199 le64_to_cpu(tcon->fsUnixInfo.Capability))) {
1200 rc = CIFSPOSIXDelFile(xid, tcon, full_path,
1201 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
1202 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1203 cFYI(1, "posix del rc %d", rc);
1204 if ((rc == 0) || (rc == -ENOENT))
1205 goto psx_del_no_retry;
1209 rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls,
1210 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1216 } else if (rc == -ENOENT) {
1218 } else if (rc == -ETXTBSY) {
1219 rc = cifs_rename_pending_delete(full_path, dentry, xid);
1222 } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
1223 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
1224 if (attrs == NULL) {
1229 /* try to reset dos attributes */
1230 cifs_inode = CIFS_I(inode);
1231 origattr = cifs_inode->cifsAttrs;
1233 origattr |= ATTR_NORMAL;
1234 dosattr = origattr & ~ATTR_READONLY;
1236 dosattr |= ATTR_NORMAL;
1237 dosattr |= ATTR_HIDDEN;
1239 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
1243 goto retry_std_delete;
1246 /* undo the setattr if we errored out and it's needed */
1247 if (rc != 0 && dosattr != 0)
1248 cifs_set_file_info(inode, attrs, xid, full_path, origattr);
1252 cifs_inode = CIFS_I(inode);
1253 cifs_inode->time = 0; /* will force revalidate to get info
1255 inode->i_ctime = current_fs_time(sb);
1257 dir->i_ctime = dir->i_mtime = current_fs_time(sb);
1258 cifs_inode = CIFS_I(dir);
1259 CIFS_I(dir)->time = 0; /* force revalidate of dir as well */
1264 cifs_put_tlink(tlink);
1268 int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
1272 struct cifs_sb_info *cifs_sb;
1273 struct tcon_link *tlink;
1274 struct cifs_tcon *pTcon;
1275 char *full_path = NULL;
1276 struct inode *newinode = NULL;
1277 struct cifs_fattr fattr;
1279 cFYI(1, "In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode);
1281 cifs_sb = CIFS_SB(inode->i_sb);
1282 tlink = cifs_sb_tlink(cifs_sb);
1284 return PTR_ERR(tlink);
1285 pTcon = tlink_tcon(tlink);
1289 full_path = build_path_from_dentry(direntry);
1290 if (full_path == NULL) {
1295 if ((pTcon->ses->capabilities & CAP_UNIX) &&
1296 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
1297 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
1299 FILE_UNIX_BASIC_INFO *pInfo =
1300 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1301 if (pInfo == NULL) {
1306 mode &= ~current_umask();
1307 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
1308 mode, NULL /* netfid */, pInfo, &oplock,
1309 full_path, cifs_sb->local_nls,
1310 cifs_sb->mnt_cifs_flags &
1311 CIFS_MOUNT_MAP_SPECIAL_CHR);
1312 if (rc == -EOPNOTSUPP) {
1314 goto mkdir_retry_old;
1316 cFYI(1, "posix mkdir returned 0x%x", rc);
1319 if (pInfo->Type == cpu_to_le32(-1)) {
1320 /* no return info, go query for it */
1322 goto mkdir_get_info;
1324 /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
1328 cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb);
1329 cifs_fill_uniqueid(inode->i_sb, &fattr);
1330 newinode = cifs_iget(inode->i_sb, &fattr);
1333 goto mkdir_get_info;
1336 d_instantiate(direntry, newinode);
1338 #ifdef CONFIG_CIFS_DEBUG2
1339 cFYI(1, "instantiated dentry %p %s to inode %p",
1340 direntry, direntry->d_name.name, newinode);
1342 if (newinode->i_nlink != 2)
1343 cFYI(1, "unexpected number of links %d",
1351 /* BB add setting the equivalent of mode via CreateX w/ACLs */
1352 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
1353 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1355 cFYI(1, "cifs_mkdir returned 0x%x", rc);
1360 if (pTcon->unix_ext)
1361 rc = cifs_get_inode_info_unix(&newinode, full_path,
1364 rc = cifs_get_inode_info(&newinode, full_path, NULL,
1365 inode->i_sb, xid, NULL);
1367 d_instantiate(direntry, newinode);
1368 /* setting nlink not necessary except in cases where we
1369 * failed to get it from the server or was set bogus */
1370 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
1371 set_nlink(direntry->d_inode, 2);
1373 mode &= ~current_umask();
1374 /* must turn on setgid bit if parent dir has it */
1375 if (inode->i_mode & S_ISGID)
1378 if (pTcon->unix_ext) {
1379 struct cifs_unix_set_info_args args = {
1381 .ctime = NO_CHANGE_64,
1382 .atime = NO_CHANGE_64,
1383 .mtime = NO_CHANGE_64,
1386 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
1387 args.uid = (__u64)current_fsuid();
1388 if (inode->i_mode & S_ISGID)
1389 args.gid = (__u64)inode->i_gid;
1391 args.gid = (__u64)current_fsgid();
1393 args.uid = NO_CHANGE_64;
1394 args.gid = NO_CHANGE_64;
1396 CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
1398 cifs_sb->mnt_cifs_flags &
1399 CIFS_MOUNT_MAP_SPECIAL_CHR);
1401 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
1402 (mode & S_IWUGO) == 0) {
1403 FILE_BASIC_INFO pInfo;
1404 struct cifsInodeInfo *cifsInode;
1407 memset(&pInfo, 0, sizeof(pInfo));
1408 cifsInode = CIFS_I(newinode);
1409 dosattrs = cifsInode->cifsAttrs|ATTR_READONLY;
1410 pInfo.Attributes = cpu_to_le32(dosattrs);
1411 tmprc = CIFSSMBSetPathInfo(xid, pTcon,
1414 cifs_sb->mnt_cifs_flags &
1415 CIFS_MOUNT_MAP_SPECIAL_CHR);
1417 cifsInode->cifsAttrs = dosattrs;
1419 if (direntry->d_inode) {
1420 if (cifs_sb->mnt_cifs_flags &
1422 direntry->d_inode->i_mode =
1425 if (cifs_sb->mnt_cifs_flags &
1426 CIFS_MOUNT_SET_UID) {
1427 direntry->d_inode->i_uid =
1429 if (inode->i_mode & S_ISGID)
1430 direntry->d_inode->i_gid =
1433 direntry->d_inode->i_gid =
1442 cifs_put_tlink(tlink);
1446 int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1450 struct cifs_sb_info *cifs_sb;
1451 struct tcon_link *tlink;
1452 struct cifs_tcon *pTcon;
1453 char *full_path = NULL;
1454 struct cifsInodeInfo *cifsInode;
1456 cFYI(1, "cifs_rmdir, inode = 0x%p", inode);
1460 full_path = build_path_from_dentry(direntry);
1461 if (full_path == NULL) {
1466 cifs_sb = CIFS_SB(inode->i_sb);
1467 tlink = cifs_sb_tlink(cifs_sb);
1468 if (IS_ERR(tlink)) {
1469 rc = PTR_ERR(tlink);
1472 pTcon = tlink_tcon(tlink);
1474 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1475 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1476 cifs_put_tlink(tlink);
1480 spin_lock(&direntry->d_inode->i_lock);
1481 i_size_write(direntry->d_inode, 0);
1482 clear_nlink(direntry->d_inode);
1483 spin_unlock(&direntry->d_inode->i_lock);
1486 cifsInode = CIFS_I(direntry->d_inode);
1487 cifsInode->time = 0; /* force revalidate to go get info when
1490 cifsInode = CIFS_I(inode);
1491 cifsInode->time = 0; /* force revalidate to get parent dir info
1492 since cached search results now invalid */
1494 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1495 current_fs_time(inode->i_sb);
1504 cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
1505 struct dentry *to_dentry, const char *toPath)
1507 struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
1508 struct tcon_link *tlink;
1509 struct cifs_tcon *pTcon;
1513 tlink = cifs_sb_tlink(cifs_sb);
1515 return PTR_ERR(tlink);
1516 pTcon = tlink_tcon(tlink);
1518 /* try path-based rename first */
1519 rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls,
1520 cifs_sb->mnt_cifs_flags &
1521 CIFS_MOUNT_MAP_SPECIAL_CHR);
1524 * don't bother with rename by filehandle unless file is busy and
1525 * source Note that cross directory moves do not work with
1526 * rename by filehandle to various Windows servers.
1528 if (rc == 0 || rc != -ETXTBSY)
1529 goto do_rename_exit;
1531 /* open-file renames don't work across directories */
1532 if (to_dentry->d_parent != from_dentry->d_parent)
1533 goto do_rename_exit;
1535 /* open the file to be renamed -- we need DELETE perms */
1536 rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
1537 CREATE_NOT_DIR, &srcfid, &oplock, NULL,
1538 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
1539 CIFS_MOUNT_MAP_SPECIAL_CHR);
1542 rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid,
1543 (const char *) to_dentry->d_name.name,
1544 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
1545 CIFS_MOUNT_MAP_SPECIAL_CHR);
1547 CIFSSMBClose(xid, pTcon, srcfid);
1550 cifs_put_tlink(tlink);
1554 int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
1555 struct inode *target_dir, struct dentry *target_dentry)
1557 char *fromName = NULL;
1558 char *toName = NULL;
1559 struct cifs_sb_info *cifs_sb;
1560 struct tcon_link *tlink;
1561 struct cifs_tcon *tcon;
1562 FILE_UNIX_BASIC_INFO *info_buf_source = NULL;
1563 FILE_UNIX_BASIC_INFO *info_buf_target;
1566 cifs_sb = CIFS_SB(source_dir->i_sb);
1567 tlink = cifs_sb_tlink(cifs_sb);
1569 return PTR_ERR(tlink);
1570 tcon = tlink_tcon(tlink);
1575 * we already have the rename sem so we do not need to
1576 * grab it again here to protect the path integrity
1578 fromName = build_path_from_dentry(source_dentry);
1579 if (fromName == NULL) {
1581 goto cifs_rename_exit;
1584 toName = build_path_from_dentry(target_dentry);
1585 if (toName == NULL) {
1587 goto cifs_rename_exit;
1590 rc = cifs_do_rename(xid, source_dentry, fromName,
1591 target_dentry, toName);
1593 if (rc == -EEXIST && tcon->unix_ext) {
1595 * Are src and dst hardlinks of same inode? We can
1596 * only tell with unix extensions enabled
1599 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
1601 if (info_buf_source == NULL) {
1603 goto cifs_rename_exit;
1606 info_buf_target = info_buf_source + 1;
1607 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName,
1610 cifs_sb->mnt_cifs_flags &
1611 CIFS_MOUNT_MAP_SPECIAL_CHR);
1615 tmprc = CIFSSMBUnixQPathInfo(xid, tcon, toName,
1618 cifs_sb->mnt_cifs_flags &
1619 CIFS_MOUNT_MAP_SPECIAL_CHR);
1621 if (tmprc == 0 && (info_buf_source->UniqueId ==
1622 info_buf_target->UniqueId)) {
1623 /* same file, POSIX says that this is a noop */
1625 goto cifs_rename_exit;
1627 } /* else ... BB we could add the same check for Windows by
1628 checking the UniqueId via FILE_INTERNAL_INFO */
1631 /* Try unlinking the target dentry if it's not negative */
1632 if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) {
1633 tmprc = cifs_unlink(target_dir, target_dentry);
1635 goto cifs_rename_exit;
1637 rc = cifs_do_rename(xid, source_dentry, fromName,
1638 target_dentry, toName);
1642 kfree(info_buf_source);
1646 cifs_put_tlink(tlink);
1651 cifs_inode_needs_reval(struct inode *inode)
1653 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1654 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1656 if (cifs_i->clientCanCacheRead)
1659 if (!lookupCacheEnabled)
1662 if (cifs_i->time == 0)
1665 if (!time_in_range(jiffies, cifs_i->time,
1666 cifs_i->time + cifs_sb->actimeo))
1669 /* hardlinked files w/ noserverino get "special" treatment */
1670 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) &&
1671 S_ISREG(inode->i_mode) && inode->i_nlink != 1)
1678 * Zap the cache. Called when invalid_mapping flag is set.
1681 cifs_invalidate_mapping(struct inode *inode)
1684 struct cifsInodeInfo *cifs_i = CIFS_I(inode);
1686 cifs_i->invalid_mapping = false;
1688 if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
1689 rc = invalidate_inode_pages2(inode->i_mapping);
1691 cERROR(1, "%s: could not invalidate inode %p", __func__,
1693 cifs_i->invalid_mapping = true;
1697 cifs_fscache_reset_inode_cookie(inode);
1701 int cifs_revalidate_file_attr(struct file *filp)
1704 struct inode *inode = filp->f_path.dentry->d_inode;
1705 struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data;
1707 if (!cifs_inode_needs_reval(inode))
1710 if (tlink_tcon(cfile->tlink)->unix_ext)
1711 rc = cifs_get_file_info_unix(filp);
1713 rc = cifs_get_file_info(filp);
1718 int cifs_revalidate_dentry_attr(struct dentry *dentry)
1722 struct inode *inode = dentry->d_inode;
1723 struct super_block *sb = dentry->d_sb;
1724 char *full_path = NULL;
1729 if (!cifs_inode_needs_reval(inode))
1734 /* can not safely grab the rename sem here if rename calls revalidate
1735 since that would deadlock */
1736 full_path = build_path_from_dentry(dentry);
1737 if (full_path == NULL) {
1742 cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time "
1743 "%ld jiffies %ld", full_path, inode, inode->i_count.counter,
1744 dentry, dentry->d_time, jiffies);
1746 if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
1747 rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
1749 rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
1758 int cifs_revalidate_file(struct file *filp)
1761 struct inode *inode = filp->f_path.dentry->d_inode;
1763 rc = cifs_revalidate_file_attr(filp);
1767 if (CIFS_I(inode)->invalid_mapping)
1768 rc = cifs_invalidate_mapping(inode);
1772 /* revalidate a dentry's inode attributes */
1773 int cifs_revalidate_dentry(struct dentry *dentry)
1776 struct inode *inode = dentry->d_inode;
1778 rc = cifs_revalidate_dentry_attr(dentry);
1782 if (CIFS_I(inode)->invalid_mapping)
1783 rc = cifs_invalidate_mapping(inode);
1787 int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1790 struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb);
1791 struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
1792 struct inode *inode = dentry->d_inode;
1796 * We need to be sure that all dirty pages are written and the server
1797 * has actual ctime, mtime and file length.
1799 if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping &&
1800 inode->i_mapping->nrpages != 0) {
1801 rc = filemap_fdatawait(inode->i_mapping);
1803 mapping_set_error(inode->i_mapping, rc);
1808 rc = cifs_revalidate_dentry_attr(dentry);
1812 generic_fillattr(inode, stat);
1813 stat->blksize = CIFS_MAX_MSGSIZE;
1814 stat->ino = CIFS_I(inode)->uniqueid;
1817 * If on a multiuser mount without unix extensions, and the admin hasn't
1818 * overridden them, set the ownership to the fsuid/fsgid of the current
1821 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) &&
1823 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID))
1824 stat->uid = current_fsuid();
1825 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID))
1826 stat->gid = current_fsgid();
1831 static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1833 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1834 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1838 page = grab_cache_page(mapping, index);
1842 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
1844 page_cache_release(page);
1848 static void cifs_setsize(struct inode *inode, loff_t offset)
1852 spin_lock(&inode->i_lock);
1853 oldsize = inode->i_size;
1854 i_size_write(inode, offset);
1855 spin_unlock(&inode->i_lock);
1857 truncate_pagecache(inode, oldsize, offset);
1861 cifs_set_file_size(struct inode *inode, struct iattr *attrs,
1862 int xid, char *full_path)
1865 struct cifsFileInfo *open_file;
1866 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1867 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1868 struct tcon_link *tlink = NULL;
1869 struct cifs_tcon *pTcon = NULL;
1870 struct cifs_io_parms io_parms;
1873 * To avoid spurious oplock breaks from server, in the case of
1874 * inodes that we already have open, avoid doing path based
1875 * setting of file size if we can do it by handle.
1876 * This keeps our caching token (oplock) and avoids timeouts
1877 * when the local oplock break takes longer to flush
1878 * writebehind data than the SMB timeout for the SetPathInfo
1879 * request would allow
1881 open_file = find_writable_file(cifsInode, true);
1883 __u16 nfid = open_file->netfid;
1884 __u32 npid = open_file->pid;
1885 pTcon = tlink_tcon(open_file->tlink);
1886 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid,
1888 cifsFileInfo_put(open_file);
1889 cFYI(1, "SetFSize for attrs rc = %d", rc);
1890 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1891 unsigned int bytes_written;
1893 io_parms.netfid = nfid;
1894 io_parms.pid = npid;
1895 io_parms.tcon = pTcon;
1896 io_parms.offset = 0;
1897 io_parms.length = attrs->ia_size;
1898 rc = CIFSSMBWrite(xid, &io_parms, &bytes_written,
1900 cFYI(1, "Wrt seteof rc %d", rc);
1906 if (pTcon == NULL) {
1907 tlink = cifs_sb_tlink(cifs_sb);
1909 return PTR_ERR(tlink);
1910 pTcon = tlink_tcon(tlink);
1913 /* Set file size by pathname rather than by handle
1914 either because no valid, writeable file handle for
1915 it was found or because there was an error setting
1917 rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size,
1918 false, cifs_sb->local_nls,
1919 cifs_sb->mnt_cifs_flags &
1920 CIFS_MOUNT_MAP_SPECIAL_CHR);
1921 cFYI(1, "SetEOF by path (setattrs) rc = %d", rc);
1922 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
1926 rc = SMBLegacyOpen(xid, pTcon, full_path,
1927 FILE_OPEN, GENERIC_WRITE,
1928 CREATE_NOT_DIR, &netfid, &oplock, NULL,
1930 cifs_sb->mnt_cifs_flags &
1931 CIFS_MOUNT_MAP_SPECIAL_CHR);
1933 unsigned int bytes_written;
1935 io_parms.netfid = netfid;
1936 io_parms.pid = current->tgid;
1937 io_parms.tcon = pTcon;
1938 io_parms.offset = 0;
1939 io_parms.length = attrs->ia_size;
1940 rc = CIFSSMBWrite(xid, &io_parms,
1943 cFYI(1, "wrt seteof rc %d", rc);
1944 CIFSSMBClose(xid, pTcon, netfid);
1948 cifs_put_tlink(tlink);
1952 cifsInode->server_eof = attrs->ia_size;
1953 cifs_setsize(inode, attrs->ia_size);
1954 cifs_truncate_page(inode->i_mapping, inode->i_size);
1961 cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
1965 char *full_path = NULL;
1966 struct inode *inode = direntry->d_inode;
1967 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
1968 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
1969 struct tcon_link *tlink;
1970 struct cifs_tcon *pTcon;
1971 struct cifs_unix_set_info_args *args = NULL;
1972 struct cifsFileInfo *open_file;
1974 cFYI(1, "setattr_unix on file %s attrs->ia_valid=0x%x",
1975 direntry->d_name.name, attrs->ia_valid);
1979 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
1980 attrs->ia_valid |= ATTR_FORCE;
1982 rc = inode_change_ok(inode, attrs);
1986 full_path = build_path_from_dentry(direntry);
1987 if (full_path == NULL) {
1993 * Attempt to flush data before changing attributes. We need to do
1994 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
1995 * ownership or mode then we may also need to do this. Here, we take
1996 * the safe way out and just do the flush on all setattr requests. If
1997 * the flush returns error, store it to report later and continue.
1999 * BB: This should be smarter. Why bother flushing pages that
2000 * will be truncated anyway? Also, should we error out here if
2001 * the flush returns error?
2003 rc = filemap_write_and_wait(inode->i_mapping);
2004 mapping_set_error(inode->i_mapping, rc);
2007 if (attrs->ia_valid & ATTR_SIZE) {
2008 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2013 /* skip mode change if it's just for clearing setuid/setgid */
2014 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2015 attrs->ia_valid &= ~ATTR_MODE;
2017 args = kmalloc(sizeof(*args), GFP_KERNEL);
2023 /* set up the struct */
2024 if (attrs->ia_valid & ATTR_MODE)
2025 args->mode = attrs->ia_mode;
2027 args->mode = NO_CHANGE_64;
2029 if (attrs->ia_valid & ATTR_UID)
2030 args->uid = attrs->ia_uid;
2032 args->uid = NO_CHANGE_64;
2034 if (attrs->ia_valid & ATTR_GID)
2035 args->gid = attrs->ia_gid;
2037 args->gid = NO_CHANGE_64;
2039 if (attrs->ia_valid & ATTR_ATIME)
2040 args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
2042 args->atime = NO_CHANGE_64;
2044 if (attrs->ia_valid & ATTR_MTIME)
2045 args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
2047 args->mtime = NO_CHANGE_64;
2049 if (attrs->ia_valid & ATTR_CTIME)
2050 args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
2052 args->ctime = NO_CHANGE_64;
2055 open_file = find_writable_file(cifsInode, true);
2057 u16 nfid = open_file->netfid;
2058 u32 npid = open_file->pid;
2059 pTcon = tlink_tcon(open_file->tlink);
2060 rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
2061 cifsFileInfo_put(open_file);
2063 tlink = cifs_sb_tlink(cifs_sb);
2064 if (IS_ERR(tlink)) {
2065 rc = PTR_ERR(tlink);
2068 pTcon = tlink_tcon(tlink);
2069 rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args,
2071 cifs_sb->mnt_cifs_flags &
2072 CIFS_MOUNT_MAP_SPECIAL_CHR);
2073 cifs_put_tlink(tlink);
2079 if ((attrs->ia_valid & ATTR_SIZE) &&
2080 attrs->ia_size != i_size_read(inode))
2081 truncate_setsize(inode, attrs->ia_size);
2083 setattr_copy(inode, attrs);
2084 mark_inode_dirty(inode);
2086 /* force revalidate when any of these times are set since some
2087 of the fs types (eg ext3, fat) do not have fine enough
2088 time granularity to match protocol, and we do not have a
2089 a way (yet) to query the server fs's time granularity (and
2090 whether it rounds times down).
2092 if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME))
2093 cifsInode->time = 0;
2102 cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
2105 uid_t uid = NO_CHANGE_32;
2106 gid_t gid = NO_CHANGE_32;
2107 struct inode *inode = direntry->d_inode;
2108 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2109 struct cifsInodeInfo *cifsInode = CIFS_I(inode);
2110 char *full_path = NULL;
2113 __u64 mode = NO_CHANGE_64;
2117 cFYI(1, "setattr on file %s attrs->iavalid 0x%x",
2118 direntry->d_name.name, attrs->ia_valid);
2120 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
2121 attrs->ia_valid |= ATTR_FORCE;
2123 rc = inode_change_ok(inode, attrs);
2129 full_path = build_path_from_dentry(direntry);
2130 if (full_path == NULL) {
2137 * Attempt to flush data before changing attributes. We need to do
2138 * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
2139 * ownership or mode then we may also need to do this. Here, we take
2140 * the safe way out and just do the flush on all setattr requests. If
2141 * the flush returns error, store it to report later and continue.
2143 * BB: This should be smarter. Why bother flushing pages that
2144 * will be truncated anyway? Also, should we error out here if
2145 * the flush returns error?
2147 rc = filemap_write_and_wait(inode->i_mapping);
2148 mapping_set_error(inode->i_mapping, rc);
2151 if (attrs->ia_valid & ATTR_SIZE) {
2152 rc = cifs_set_file_size(inode, attrs, xid, full_path);
2154 goto cifs_setattr_exit;
2157 if (attrs->ia_valid & ATTR_UID)
2158 uid = attrs->ia_uid;
2160 if (attrs->ia_valid & ATTR_GID)
2161 gid = attrs->ia_gid;
2163 #ifdef CONFIG_CIFS_ACL
2164 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2165 if (uid != NO_CHANGE_32 || gid != NO_CHANGE_32) {
2166 rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
2169 cFYI(1, "%s: Setting id failed with error: %d",
2171 goto cifs_setattr_exit;
2175 #endif /* CONFIG_CIFS_ACL */
2176 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID))
2177 attrs->ia_valid &= ~(ATTR_UID | ATTR_GID);
2179 /* skip mode change if it's just for clearing setuid/setgid */
2180 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
2181 attrs->ia_valid &= ~ATTR_MODE;
2183 if (attrs->ia_valid & ATTR_MODE) {
2184 mode = attrs->ia_mode;
2186 #ifdef CONFIG_CIFS_ACL
2187 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
2188 rc = id_mode_to_cifs_acl(inode, full_path, mode,
2189 NO_CHANGE_32, NO_CHANGE_32);
2191 cFYI(1, "%s: Setting ACL failed with error: %d",
2193 goto cifs_setattr_exit;
2196 #endif /* CONFIG_CIFS_ACL */
2197 if (((mode & S_IWUGO) == 0) &&
2198 (cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
2200 dosattr = cifsInode->cifsAttrs | ATTR_READONLY;
2202 /* fix up mode if we're not using dynperm */
2203 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0)
2204 attrs->ia_mode = inode->i_mode & ~S_IWUGO;
2205 } else if ((mode & S_IWUGO) &&
2206 (cifsInode->cifsAttrs & ATTR_READONLY)) {
2208 dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY;
2209 /* Attributes of 0 are ignored */
2211 dosattr |= ATTR_NORMAL;
2213 /* reset local inode permissions to normal */
2214 if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2215 attrs->ia_mode &= ~(S_IALLUGO);
2216 if (S_ISDIR(inode->i_mode))
2218 cifs_sb->mnt_dir_mode;
2221 cifs_sb->mnt_file_mode;
2223 } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) {
2224 /* ignore mode change - ATTR_READONLY hasn't changed */
2225 attrs->ia_valid &= ~ATTR_MODE;
2229 if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) ||
2230 ((attrs->ia_valid & ATTR_MODE) && dosattr)) {
2231 rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr);
2232 /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */
2234 /* Even if error on time set, no sense failing the call if
2235 the server would set the time to a reasonable value anyway,
2236 and this check ensures that we are not being called from
2237 sys_utimes in which case we ought to fail the call back to
2238 the user when the server rejects the call */
2239 if ((rc) && (attrs->ia_valid &
2240 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
2244 /* do not need local check to inode_check_ok since the server does
2247 goto cifs_setattr_exit;
2249 if ((attrs->ia_valid & ATTR_SIZE) &&
2250 attrs->ia_size != i_size_read(inode))
2251 truncate_setsize(inode, attrs->ia_size);
2253 setattr_copy(inode, attrs);
2254 mark_inode_dirty(inode);
2263 cifs_setattr(struct dentry *direntry, struct iattr *attrs)
2265 struct inode *inode = direntry->d_inode;
2266 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
2267 struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb);
2269 if (pTcon->unix_ext)
2270 return cifs_setattr_unix(direntry, attrs);
2272 return cifs_setattr_nounix(direntry, attrs);
2274 /* BB: add cifs_setattr_legacy for really old servers */
2278 void cifs_delete_inode(struct inode *inode)
2280 cFYI(1, "In cifs_delete_inode, inode = 0x%p", inode);
2281 /* may have to add back in if and when safe distributed caching of
2282 directories added e.g. via FindNotify */