blob: 1d8aa0385ef78435575993faead32b0091ff14a2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs/inode.c
3 *
Steve French2dd29d32007-04-23 22:07:35 +00004 * Copyright (C) International Business Machines Corp., 2002,2007
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
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.
11 *
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.
16 *
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
20 */
21#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/stat.h>
23#include <linux/pagemap.h>
24#include <asm/div64.h>
25#include "cifsfs.h"
26#include "cifspdu.h"
27#include "cifsglob.h"
28#include "cifsproto.h"
29#include "cifs_debug.h"
30#include "cifs_fs_sb.h"
31
Christoph Hellwig70eff552008-02-15 20:55:05 +000032
33static void cifs_set_ops(struct inode *inode)
34{
35 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
36
37 switch (inode->i_mode & S_IFMT) {
38 case S_IFREG:
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;
43 else
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;
49 }
50
51
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;
56 else
57 inode->i_data.a_ops = &cifs_addr_ops;
58 break;
59 case S_IFDIR:
60 inode->i_op = &cifs_dir_inode_ops;
61 inode->i_fop = &cifs_dir_ops;
62 break;
63 case S_IFLNK:
64 inode->i_op = &cifs_symlink_inode_ops;
65 break;
66 default:
67 init_special_inode(inode, inode->i_mode, inode->i_rdev);
68 break;
69 }
70}
71
Linus Torvalds1da177e2005-04-16 15:20:36 -070072int cifs_get_inode_info_unix(struct inode **pinode,
73 const unsigned char *search_path, struct super_block *sb, int xid)
74{
75 int rc = 0;
76 FILE_UNIX_BASIC_INFO findData;
77 struct cifsTconInfo *pTcon;
78 struct inode *inode;
79 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
80 char *tmp_path;
81
82 pTcon = cifs_sb->tcon;
Steve French26a21b92006-05-31 18:05:34 +000083 cFYI(1, ("Getting info on %s", search_path));
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 /* could have done a find first instead but this returns more info */
85 rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
Steve French737b7582005-04-28 22:41:06 -070086 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
87 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088/* dump_mem("\nUnixQPathInfo return data", &findData,
89 sizeof(findData)); */
90 if (rc) {
91 if (rc == -EREMOTE) {
92 tmp_path =
93 kmalloc(strnlen(pTcon->treeName,
94 MAX_TREE_SIZE + 1) +
95 strnlen(search_path, MAX_PATHCONF) + 1,
96 GFP_KERNEL);
Steve Frenchf6d09982008-01-08 23:18:22 +000097 if (tmp_path == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 return -ENOMEM;
Steve Frenchf6d09982008-01-08 23:18:22 +000099
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000100 /* have to skip first of the double backslash of
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 UNC name */
102 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
103 strncat(tmp_path, search_path, MAX_PATHCONF);
104 rc = connect_to_dfs_path(xid, pTcon->ses,
105 /* treename + */ tmp_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000106 cifs_sb->local_nls,
107 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700108 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 kfree(tmp_path);
110
111 /* BB fix up inode etc. */
112 } else if (rc) {
113 return rc;
114 }
115 } else {
116 struct cifsInodeInfo *cifsInfo;
117 __u32 type = le32_to_cpu(findData.Type);
118 __u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
119 __u64 end_of_file = le64_to_cpu(findData.EndOfFile);
120
121 /* get new inode */
122 if (*pinode == NULL) {
123 *pinode = new_inode(sb);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000124 if (*pinode == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 return -ENOMEM;
126 /* Is an i_ino of zero legal? */
127 /* Are there sanity checks we can use to ensure that
128 the server is really filling in that field? */
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700129 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 (*pinode)->i_ino =
131 (unsigned long)findData.UniqueId;
132 } /* note ino incremented to unique num in new_inode */
Steve French4523cc32007-04-30 20:13:06 +0000133 if (sb->s_flags & MS_NOATIME)
Steve French1b2b2122007-02-17 04:30:54 +0000134 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
Steve French50c2f752007-07-13 00:33:32 +0000135
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 insert_inode_hash(*pinode);
137 }
138
139 inode = *pinode;
140 cifsInfo = CIFS_I(inode);
141
Steve French26a21b92006-05-31 18:05:34 +0000142 cFYI(1, ("Old time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 cifsInfo->time = jiffies;
Steve French26a21b92006-05-31 18:05:34 +0000144 cFYI(1, ("New time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 /* this is ok to set on every inode revalidate */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000146 atomic_set(&cifsInfo->inUse, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
148 inode->i_atime =
149 cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
150 inode->i_mtime =
151 cifs_NTtimeToUnix(le64_to_cpu
152 (findData.LastModificationTime));
153 inode->i_ctime =
154 cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
155 inode->i_mode = le64_to_cpu(findData.Permissions);
Steve French3020a1f2005-11-18 11:31:10 -0800156 /* since we set the inode type below we need to mask off
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000157 to avoid strange results if bits set above */
Steve French7f8ed422007-09-28 22:28:55 +0000158 inode->i_mode &= ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 if (type == UNIX_FILE) {
160 inode->i_mode |= S_IFREG;
161 } else if (type == UNIX_SYMLINK) {
162 inode->i_mode |= S_IFLNK;
163 } else if (type == UNIX_DIR) {
164 inode->i_mode |= S_IFDIR;
165 } else if (type == UNIX_CHARDEV) {
166 inode->i_mode |= S_IFCHR;
167 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
168 le64_to_cpu(findData.DevMinor) & MINORMASK);
169 } else if (type == UNIX_BLOCKDEV) {
170 inode->i_mode |= S_IFBLK;
171 inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
172 le64_to_cpu(findData.DevMinor) & MINORMASK);
173 } else if (type == UNIX_FIFO) {
174 inode->i_mode |= S_IFIFO;
175 } else if (type == UNIX_SOCKET) {
176 inode->i_mode |= S_IFSOCK;
Steve French3020a1f2005-11-18 11:31:10 -0800177 } else {
178 /* safest to call it a file if we do not know */
179 inode->i_mode |= S_IFREG;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000180 cFYI(1, ("unknown type %d", type));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 }
Steve French50c2f752007-07-13 00:33:32 +0000182
Steve French4523cc32007-04-30 20:13:06 +0000183 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
184 inode->i_uid = cifs_sb->mnt_uid;
185 else
186 inode->i_uid = le64_to_cpu(findData.Uid);
187
188 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
189 inode->i_gid = cifs_sb->mnt_gid;
190 else
191 inode->i_gid = le64_to_cpu(findData.Gid);
Steve French50c2f752007-07-13 00:33:32 +0000192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 inode->i_nlink = le64_to_cpu(findData.Nlinks);
194
Steve French3677db12007-02-26 16:46:11 +0000195 spin_lock(&inode->i_lock);
Steve French7ba52632007-02-08 18:14:13 +0000196 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 /* can not safely change the file size here if the
198 client is writing to it due to potential races */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 i_size_write(inode, end_of_file);
200
201 /* blksize needs to be multiple of two. So safer to default to
202 blksize and blkbits set in superblock so 2**blkbits and blksize
203 will match rather than setting to:
204 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
205
206 /* This seems incredibly stupid but it turns out that i_blocks
207 is not related to (i_size / i_blksize), instead 512 byte size
208 is required for calculating num blocks */
209
210 /* 512 bytes (2**9) is the fake blocksize that must be used */
211 /* for this calculation */
212 inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
213 }
Steve French3677db12007-02-26 16:46:11 +0000214 spin_unlock(&inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
216 if (num_of_bytes < end_of_file)
Steve French8b94bcb2005-11-11 11:41:00 -0800217 cFYI(1, ("allocation size less than end of file"));
Andrew Morton5515eff2006-03-26 01:37:53 -0800218 cFYI(1, ("Size %ld and blocks %llu",
219 (unsigned long) inode->i_size,
220 (unsigned long long)inode->i_blocks));
Steve French8b94bcb2005-11-11 11:41:00 -0800221
Christoph Hellwig70eff552008-02-15 20:55:05 +0000222 cifs_set_ops(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 }
224 return rc;
225}
226
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000227static int decode_sfu_inode(struct inode *inode, __u64 size,
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800228 const unsigned char *path,
229 struct cifs_sb_info *cifs_sb, int xid)
230{
231 int rc;
232 int oplock = FALSE;
233 __u16 netfid;
234 struct cifsTconInfo *pTcon = cifs_sb->tcon;
Steve French86c96b42005-11-18 20:25:31 -0800235 char buf[24];
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800236 unsigned int bytes_read;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000237 char *pbuf;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800238
239 pbuf = buf;
240
Steve French4523cc32007-04-30 20:13:06 +0000241 if (size == 0) {
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800242 inode->i_mode |= S_IFIFO;
243 return 0;
244 } else if (size < 8) {
245 return -EINVAL; /* EOPNOTSUPP? */
246 }
Steve French50c2f752007-07-13 00:33:32 +0000247
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800248 rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
249 CREATE_NOT_DIR, &netfid, &oplock, NULL,
250 cifs_sb->local_nls,
251 cifs_sb->mnt_cifs_flags &
252 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000253 if (rc == 0) {
Steve Frenchec637e32005-12-12 20:53:18 -0800254 int buf_type = CIFS_NO_BUFFER;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800255 /* Read header */
256 rc = CIFSSMBRead(xid, pTcon,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000257 netfid,
Steve French86c96b42005-11-18 20:25:31 -0800258 24 /* length */, 0 /* offset */,
Steve Frenchec637e32005-12-12 20:53:18 -0800259 &bytes_read, &pbuf, &buf_type);
Steve French4523cc32007-04-30 20:13:06 +0000260 if ((rc == 0) && (bytes_read >= 8)) {
261 if (memcmp("IntxBLK", pbuf, 8) == 0) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000262 cFYI(1, ("Block device"));
Steve French3020a1f2005-11-18 11:31:10 -0800263 inode->i_mode |= S_IFBLK;
Steve French4523cc32007-04-30 20:13:06 +0000264 if (bytes_read == 24) {
Steve French86c96b42005-11-18 20:25:31 -0800265 /* we have enough to decode dev num */
266 __u64 mjr; /* major */
267 __u64 mnr; /* minor */
268 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
269 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
270 inode->i_rdev = MKDEV(mjr, mnr);
271 }
Steve French4523cc32007-04-30 20:13:06 +0000272 } else if (memcmp("IntxCHR", pbuf, 8) == 0) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000273 cFYI(1, ("Char device"));
Steve French3020a1f2005-11-18 11:31:10 -0800274 inode->i_mode |= S_IFCHR;
Steve French4523cc32007-04-30 20:13:06 +0000275 if (bytes_read == 24) {
Steve French86c96b42005-11-18 20:25:31 -0800276 /* we have enough to decode dev num */
277 __u64 mjr; /* major */
278 __u64 mnr; /* minor */
279 mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
280 mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
281 inode->i_rdev = MKDEV(mjr, mnr);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000282 }
Steve French4523cc32007-04-30 20:13:06 +0000283 } else if (memcmp("IntxLNK", pbuf, 7) == 0) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000284 cFYI(1, ("Symlink"));
Steve French3020a1f2005-11-18 11:31:10 -0800285 inode->i_mode |= S_IFLNK;
Steve French86c96b42005-11-18 20:25:31 -0800286 } else {
287 inode->i_mode |= S_IFREG; /* file? */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000288 rc = -EOPNOTSUPP;
Steve French86c96b42005-11-18 20:25:31 -0800289 }
Steve French3020a1f2005-11-18 11:31:10 -0800290 } else {
291 inode->i_mode |= S_IFREG; /* then it is a file */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000292 rc = -EOPNOTSUPP; /* or some unknown SFU type */
293 }
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800294 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800295 }
296 return rc;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800297}
298
Steve French9e294f12005-11-17 16:59:21 -0800299#define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */
300
Steve French953f8682007-10-31 04:54:42 +0000301static int get_sfu_mode(struct inode *inode,
Steve French9e294f12005-11-17 16:59:21 -0800302 const unsigned char *path,
303 struct cifs_sb_info *cifs_sb, int xid)
304{
Steve French3020a1f2005-11-18 11:31:10 -0800305#ifdef CONFIG_CIFS_XATTR
Steve French9e294f12005-11-17 16:59:21 -0800306 ssize_t rc;
307 char ea_value[4];
308 __u32 mode;
309
310 rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
311 ea_value, 4 /* size of buf */, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000312 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French4523cc32007-04-30 20:13:06 +0000313 if (rc < 0)
Steve French9e294f12005-11-17 16:59:21 -0800314 return (int)rc;
315 else if (rc > 3) {
316 mode = le32_to_cpu(*((__le32 *)ea_value));
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000317 inode->i_mode &= ~SFBITS_MASK;
318 cFYI(1, ("special bits 0%o org mode 0%o", mode, inode->i_mode));
Steve French9e294f12005-11-17 16:59:21 -0800319 inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000320 cFYI(1, ("special mode bits 0%o", mode));
Steve French9e294f12005-11-17 16:59:21 -0800321 return 0;
322 } else {
323 return 0;
324 }
Steve French3020a1f2005-11-18 11:31:10 -0800325#else
326 return -EOPNOTSUPP;
327#endif
Steve French9e294f12005-11-17 16:59:21 -0800328}
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330int cifs_get_inode_info(struct inode **pinode,
331 const unsigned char *search_path, FILE_ALL_INFO *pfindData,
332 struct super_block *sb, int xid)
333{
334 int rc = 0;
335 struct cifsTconInfo *pTcon;
336 struct inode *inode;
337 struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
338 char *tmp_path;
339 char *buf = NULL;
Steve French8d6286f2006-11-16 22:48:25 +0000340 int adjustTZ = FALSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
342 pTcon = cifs_sb->tcon;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000343 cFYI(1, ("Getting info on %s", search_path));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700345 if ((pfindData == NULL) && (*pinode != NULL)) {
346 if (CIFS_I(*pinode)->clientCanCacheRead) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000347 cFYI(1, ("No need to revalidate cached inode sizes"));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 return rc;
349 }
350 }
351
352 /* if file info not passed in then get it from server */
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700353 if (pfindData == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700355 if (buf == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 return -ENOMEM;
357 pfindData = (FILE_ALL_INFO *)buf;
358 /* could do find first instead but this returns more info */
359 rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
Steve Frenchacf1a1b2006-10-12 03:28:28 +0000360 0 /* not legacy */,
Steve French6b8edfe2005-08-23 20:26:03 -0700361 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700362 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French6b8edfe2005-08-23 20:26:03 -0700363 /* BB optimize code so we do not make the above call
364 when server claims no NT SMB support and the above call
365 failed at least once - set flag in tcon or mount */
Steve French4523cc32007-04-30 20:13:06 +0000366 if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
Steve French6b8edfe2005-08-23 20:26:03 -0700367 rc = SMBQueryInformation(xid, pTcon, search_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000368 pfindData, cifs_sb->local_nls,
Steve French6b8edfe2005-08-23 20:26:03 -0700369 cifs_sb->mnt_cifs_flags &
370 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French8d6286f2006-11-16 22:48:25 +0000371 adjustTZ = TRUE;
Steve French6b8edfe2005-08-23 20:26:03 -0700372 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 }
374 /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
375 if (rc) {
376 if (rc == -EREMOTE) {
377 tmp_path =
378 kmalloc(strnlen
379 (pTcon->treeName,
380 MAX_TREE_SIZE + 1) +
381 strnlen(search_path, MAX_PATHCONF) + 1,
382 GFP_KERNEL);
383 if (tmp_path == NULL) {
384 kfree(buf);
385 return -ENOMEM;
386 }
387
388 strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
389 strncat(tmp_path, search_path, MAX_PATHCONF);
390 rc = connect_to_dfs_path(xid, pTcon->ses,
391 /* treename + */ tmp_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000392 cifs_sb->local_nls,
393 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700394 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 kfree(tmp_path);
396 /* BB fix up inode etc. */
397 } else if (rc) {
398 kfree(buf);
399 return rc;
400 }
401 } else {
402 struct cifsInodeInfo *cifsInfo;
403 __u32 attr = le32_to_cpu(pfindData->Attributes);
404
405 /* get new inode */
406 if (*pinode == NULL) {
407 *pinode = new_inode(sb);
Steve Frenchacf1a1b2006-10-12 03:28:28 +0000408 if (*pinode == NULL) {
409 kfree(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 return -ENOMEM;
Steve Frenchacf1a1b2006-10-12 03:28:28 +0000411 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 /* Is an i_ino of zero legal? Can we use that to check
413 if the server supports returning inode numbers? Are
414 there other sanity checks we can use to ensure that
415 the server is really filling in that field? */
416
417 /* We can not use the IndexNumber field by default from
418 Windows or Samba (in ALL_INFO buf) but we can request
419 it explicitly. It may not be unique presumably if
420 the server has multiple devices mounted under one
421 share */
422
423 /* There may be higher info levels that work but are
424 there Windows server or network appliances for which
425 IndexNumber field is not guaranteed unique? */
426
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000427 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 int rc1 = 0;
429 __u64 inode_num;
430
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000431 rc1 = CIFSGetSrvInodeNumber(xid, pTcon,
432 search_path, &inode_num,
Steve French737b7582005-04-28 22:41:06 -0700433 cifs_sb->local_nls,
434 cifs_sb->mnt_cifs_flags &
435 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700436 if (rc1) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000437 cFYI(1, ("GetSrvInodeNum rc %d", rc1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 /* BB EOPNOSUPP disable SERVER_INUM? */
439 } else /* do we need cast or hash to ino? */
440 (*pinode)->i_ino = inode_num;
441 } /* else ino incremented to unique num in new_inode*/
Steve French4523cc32007-04-30 20:13:06 +0000442 if (sb->s_flags & MS_NOATIME)
Steve French1b2b2122007-02-17 04:30:54 +0000443 (*pinode)->i_flags |= S_NOATIME | S_NOCMTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 insert_inode_hash(*pinode);
445 }
446 inode = *pinode;
447 cifsInfo = CIFS_I(inode);
448 cifsInfo->cifsAttrs = attr;
Steve French26a21b92006-05-31 18:05:34 +0000449 cFYI(1, ("Old time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 cifsInfo->time = jiffies;
Steve French26a21b92006-05-31 18:05:34 +0000451 cFYI(1, ("New time %ld", cifsInfo->time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
453 /* blksize needs to be multiple of two. So safer to default to
454 blksize and blkbits set in superblock so 2**blkbits and blksize
455 will match rather than setting to:
456 (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/
457
Steve French26a21b92006-05-31 18:05:34 +0000458 /* Linux can not store file creation time so ignore it */
Steve French4523cc32007-04-30 20:13:06 +0000459 if (pfindData->LastAccessTime)
Steve French1bd5bbc2006-09-28 03:35:57 +0000460 inode->i_atime = cifs_NTtimeToUnix
461 (le64_to_cpu(pfindData->LastAccessTime));
462 else /* do not need to use current_fs_time - time not stored */
463 inode->i_atime = CURRENT_TIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 inode->i_mtime =
465 cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
466 inode->i_ctime =
467 cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
Steve French26a21b92006-05-31 18:05:34 +0000468 cFYI(0, ("Attributes came in as 0x%x", attr));
Steve French4523cc32007-04-30 20:13:06 +0000469 if (adjustTZ && (pTcon->ses) && (pTcon->ses->server)) {
Steve French8d6286f2006-11-16 22:48:25 +0000470 inode->i_ctime.tv_sec += pTcon->ses->server->timeAdj;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000471 inode->i_mtime.tv_sec += pTcon->ses->server->timeAdj;
Steve French8d6286f2006-11-16 22:48:25 +0000472 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473
474 /* set default mode. will override for dirs below */
475 if (atomic_read(&cifsInfo->inUse) == 0)
476 /* new inode, can safely set these fields */
477 inode->i_mode = cifs_sb->mnt_file_mode;
Steve French3020a1f2005-11-18 11:31:10 -0800478 else /* since we set the inode type below we need to mask off
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000479 to avoid strange results if type changes and both
480 get orred in */
481 inode->i_mode &= ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482/* if (attr & ATTR_REPARSE) */
483 /* We no longer handle these as symlinks because we could not
484 follow them due to the absolute path with drive letter */
485 if (attr & ATTR_DIRECTORY) {
486 /* override default perms since we do not do byte range locking
487 on dirs */
488 inode->i_mode = cifs_sb->mnt_dir_mode;
489 inode->i_mode |= S_IFDIR;
Steve Frencheda3c0292005-07-21 15:20:28 -0700490 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
491 (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
492 /* No need to le64 convert size of zero */
493 (pfindData->EndOfFile == 0)) {
494 inode->i_mode = cifs_sb->mnt_file_mode;
495 inode->i_mode |= S_IFIFO;
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800496/* BB Finish for SFU style symlinks and devices */
497 } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
498 (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000499 if (decode_sfu_inode(inode,
Steve Frenchd6e2f2a42005-11-15 16:43:39 -0800500 le64_to_cpu(pfindData->EndOfFile),
501 search_path,
Steve Frenchad7a2922008-02-07 23:25:02 +0000502 cifs_sb, xid))
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000503 cFYI(1, ("Unrecognized sfu inode type"));
Steve Frenchad7a2922008-02-07 23:25:02 +0000504
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000505 cFYI(1, ("sfu mode 0%o", inode->i_mode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 } else {
507 inode->i_mode |= S_IFREG;
508 /* treat the dos attribute of read-only as read-only
509 mode e.g. 555 */
510 if (cifsInfo->cifsAttrs & ATTR_READONLY)
511 inode->i_mode &= ~(S_IWUGO);
Alan Tysonf5c1e2e2007-03-10 06:05:14 +0000512 else if ((inode->i_mode & S_IWUGO) == 0)
513 /* the ATTR_READONLY flag may have been */
514 /* changed on server -- set any w bits */
515 /* allowed by mnt_file_mode */
516 inode->i_mode |= (S_IWUGO &
517 cifs_sb->mnt_file_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 /* BB add code here -
519 validate if device or weird share or device type? */
520 }
Steve French50c2f752007-07-13 00:33:32 +0000521
Steve French3677db12007-02-26 16:46:11 +0000522 spin_lock(&inode->i_lock);
Steve Frenchf6d09982008-01-08 23:18:22 +0000523 if (is_size_safe_to_change(cifsInfo,
524 le64_to_cpu(pfindData->EndOfFile))) {
Steve French7ba52632007-02-08 18:14:13 +0000525 /* can not safely shrink the file size here if the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 client is writing to it due to potential races */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000527 i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
529 /* 512 bytes (2**9) is the fake blocksize that must be
530 used for this calculation */
531 inode->i_blocks = (512 - 1 + le64_to_cpu(
532 pfindData->AllocationSize)) >> 9;
533 }
Steve French3677db12007-02-26 16:46:11 +0000534 spin_unlock(&inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535
536 inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);
537
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000538 /* BB fill in uid and gid here? with help from winbind?
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 or retrieve from NTFS stream extended attribute */
Steve French4879b442007-10-19 21:57:39 +0000540#ifdef CONFIG_CIFS_EXPERIMENTAL
Steve French953f8682007-10-31 04:54:42 +0000541 /* fill in 0777 bits from ACL */
Steve French4879b442007-10-19 21:57:39 +0000542 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
543 cFYI(1, ("Getting mode bits from ACL"));
Steve French630f3f0c2007-10-25 21:17:17 +0000544 acl_to_uid_mode(inode, search_path);
Steve French4879b442007-10-19 21:57:39 +0000545 }
546#endif
Steve French4523cc32007-04-30 20:13:06 +0000547 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
Steve French953f8682007-10-31 04:54:42 +0000548 /* fill in remaining high mode bits e.g. SUID, VTX */
549 get_sfu_mode(inode, search_path, cifs_sb, xid);
Steve French9e294f12005-11-17 16:59:21 -0800550 } else if (atomic_read(&cifsInfo->inUse) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 inode->i_uid = cifs_sb->mnt_uid;
552 inode->i_gid = cifs_sb->mnt_gid;
553 /* set so we do not keep refreshing these fields with
554 bad data after user has changed them in memory */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000555 atomic_set(&cifsInfo->inUse, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 }
557
Christoph Hellwig70eff552008-02-15 20:55:05 +0000558 cifs_set_ops(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 }
560 kfree(buf);
561 return rc;
562}
563
Steve French7f8ed422007-09-28 22:28:55 +0000564static const struct inode_operations cifs_ipc_inode_ops = {
565 .lookup = cifs_lookup,
566};
567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568/* gets root inode */
David Howellsce634ab2008-02-07 00:15:33 -0800569struct inode *cifs_iget(struct super_block *sb, unsigned long ino)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570{
David Howellsce634ab2008-02-07 00:15:33 -0800571 int xid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 struct cifs_sb_info *cifs_sb;
David Howellsce634ab2008-02-07 00:15:33 -0800573 struct inode *inode;
574 long rc;
575
576 inode = iget_locked(sb, ino);
577 if (!inode)
578 return ERR_PTR(-ENOMEM);
579 if (!(inode->i_state & I_NEW))
580 return inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
582 cifs_sb = CIFS_SB(inode->i_sb);
583 xid = GetXid();
Steve Frenchc18c8422007-07-18 23:21:09 +0000584
585 if (cifs_sb->tcon->unix_ext)
Steve French7f8ed422007-09-28 22:28:55 +0000586 rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 else
Steve French7f8ed422007-09-28 22:28:55 +0000588 rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
589 if (rc && cifs_sb->tcon->ipc) {
590 cFYI(1, ("ipc connection - fake read inode"));
591 inode->i_mode |= S_IFDIR;
592 inode->i_nlink = 2;
593 inode->i_op = &cifs_ipc_inode_ops;
594 inode->i_fop = &simple_dir_operations;
595 inode->i_uid = cifs_sb->mnt_uid;
596 inode->i_gid = cifs_sb->mnt_gid;
David Howellsce634ab2008-02-07 00:15:33 -0800597 _FreeXid(xid);
598 iget_failed(inode);
599 return ERR_PTR(rc);
Steve French7f8ed422007-09-28 22:28:55 +0000600 }
601
David Howellsce634ab2008-02-07 00:15:33 -0800602 unlock_new_inode(inode);
603
604 /* can not call macro FreeXid here since in a void func
605 * TODO: This is no longer true
606 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 _FreeXid(xid);
David Howellsce634ab2008-02-07 00:15:33 -0800608 return inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609}
610
611int cifs_unlink(struct inode *inode, struct dentry *direntry)
612{
613 int rc = 0;
614 int xid;
615 struct cifs_sb_info *cifs_sb;
616 struct cifsTconInfo *pTcon;
617 char *full_path = NULL;
618 struct cifsInodeInfo *cifsInode;
619 FILE_BASIC_INFO *pinfo_buf;
620
Steve French06bcfed2006-03-31 22:43:50 +0000621 cFYI(1, ("cifs_unlink, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
623 xid = GetXid();
624
Steve French4523cc32007-04-30 20:13:06 +0000625 if (inode)
Steve French6910ab32006-03-31 03:37:08 +0000626 cifs_sb = CIFS_SB(inode->i_sb);
627 else
Steve French06bcfed2006-03-31 22:43:50 +0000628 cifs_sb = CIFS_SB(direntry->d_sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 pTcon = cifs_sb->tcon;
630
631 /* Unlink can be called from rename so we can not grab the sem here
632 since we deadlock otherwise */
Arjan van de Vena11f3a02006-03-23 03:00:33 -0800633/* mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
Steve French7f573562005-08-30 11:32:14 -0700634 full_path = build_path_from_dentry(direntry);
Arjan van de Vena11f3a02006-03-23 03:00:33 -0800635/* mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 if (full_path == NULL) {
637 FreeXid(xid);
638 return -ENOMEM;
639 }
Steve French2d785a52007-07-15 01:48:57 +0000640
641 if ((pTcon->ses->capabilities & CAP_UNIX) &&
642 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
643 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
644 rc = CIFSPOSIXDelFile(xid, pTcon, full_path,
645 SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls,
646 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
647 cFYI(1, ("posix del rc %d", rc));
648 if ((rc == 0) || (rc == -ENOENT))
649 goto psx_del_no_retry;
650 }
651
Steve French737b7582005-04-28 22:41:06 -0700652 rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
653 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve French2d785a52007-07-15 01:48:57 +0000654psx_del_no_retry:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 if (!rc) {
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700656 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700657 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 } else if (rc == -ENOENT) {
659 d_drop(direntry);
660 } else if (rc == -ETXTBSY) {
661 int oplock = FALSE;
662 __u16 netfid;
663
664 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
665 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
Steve French737b7582005-04-28 22:41:06 -0700666 &netfid, &oplock, NULL, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000667 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700668 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000669 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000671 cifs_sb->local_nls,
672 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700673 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700675 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700676 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 }
678 } else if (rc == -EACCES) {
679 /* try only if r/o attribute set in local lookup data? */
Eric Sesterhenna048d7a2006-02-21 22:33:09 +0000680 pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 if (pinfo_buf) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 /* ATTRS set to normal clears r/o bit */
683 pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
684 if (!(pTcon->ses->flags & CIFS_SES_NT4))
685 rc = CIFSSMBSetTimes(xid, pTcon, full_path,
686 pinfo_buf,
Steve French737b7582005-04-28 22:41:06 -0700687 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000688 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700689 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 else
691 rc = -EOPNOTSUPP;
692
693 if (rc == -EOPNOTSUPP) {
694 int oplock = FALSE;
695 __u16 netfid;
696 /* rc = CIFSSMBSetAttrLegacy(xid, pTcon,
697 full_path,
698 (__u16)ATTR_NORMAL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000699 cifs_sb->local_nls);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 For some strange reason it seems that NT4 eats the
701 old setattr call without actually setting the
702 attributes so on to the third attempted workaround
703 */
704
705 /* BB could scan to see if we already have it open
706 and pass in pid of opener to function */
707 rc = CIFSSMBOpen(xid, pTcon, full_path,
708 FILE_OPEN, SYNCHRONIZE |
709 FILE_WRITE_ATTRIBUTES, 0,
710 &netfid, &oplock, NULL,
Steve French737b7582005-04-28 22:41:06 -0700711 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000712 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700713 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000714 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 rc = CIFSSMBSetFileTimes(xid, pTcon,
716 pinfo_buf,
717 netfid);
718 CIFSSMBClose(xid, pTcon, netfid);
719 }
720 }
721 kfree(pinfo_buf);
722 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000723 if (rc == 0) {
724 rc = CIFSSMBDelFile(xid, pTcon, full_path,
725 cifs_sb->local_nls,
726 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700727 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728 if (!rc) {
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700729 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700730 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 } else if (rc == -ETXTBSY) {
732 int oplock = FALSE;
733 __u16 netfid;
734
735 rc = CIFSSMBOpen(xid, pTcon, full_path,
736 FILE_OPEN, DELETE,
737 CREATE_NOT_DIR |
738 CREATE_DELETE_ON_CLOSE,
739 &netfid, &oplock, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000740 cifs_sb->local_nls,
741 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -0700742 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000743 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 CIFSSMBRenameOpenFile(xid, pTcon,
745 netfid, NULL,
Steve French737b7582005-04-28 22:41:06 -0700746 cifs_sb->local_nls,
747 cifs_sb->mnt_cifs_flags &
748 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 CIFSSMBClose(xid, pTcon, netfid);
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700750 if (direntry->d_inode)
Dave Hansen9a53c3a2006-09-30 23:29:03 -0700751 drop_nlink(direntry->d_inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 }
753 /* BB if rc = -ETXTBUSY goto the rename logic BB */
754 }
755 }
756 }
Steve Frenchd0d2f2d2005-06-02 15:12:36 -0700757 if (direntry->d_inode) {
Steve Frenchb2aeb9d2005-05-17 13:16:18 -0500758 cifsInode = CIFS_I(direntry->d_inode);
759 cifsInode->time = 0; /* will force revalidate to get info
760 when needed */
761 direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
762 }
Steve French4523cc32007-04-30 20:13:06 +0000763 if (inode) {
Steve French06bcfed2006-03-31 22:43:50 +0000764 inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
765 cifsInode = CIFS_I(inode);
766 cifsInode->time = 0; /* force revalidate of dir as well */
767 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768
769 kfree(full_path);
770 FreeXid(xid);
771 return rc;
772}
773
Steve French2dd29d32007-04-23 22:07:35 +0000774static void posix_fill_in_inode(struct inode *tmp_inode,
775 FILE_UNIX_BASIC_INFO *pData, int *pobject_type, int isNewInode)
776{
777 loff_t local_size;
778 struct timespec local_mtime;
779
780 struct cifsInodeInfo *cifsInfo = CIFS_I(tmp_inode);
781 struct cifs_sb_info *cifs_sb = CIFS_SB(tmp_inode->i_sb);
782
783 __u32 type = le32_to_cpu(pData->Type);
784 __u64 num_of_bytes = le64_to_cpu(pData->NumOfBytes);
785 __u64 end_of_file = le64_to_cpu(pData->EndOfFile);
786 cifsInfo->time = jiffies;
787 atomic_inc(&cifsInfo->inUse);
788
789 /* save mtime and size */
790 local_mtime = tmp_inode->i_mtime;
791 local_size = tmp_inode->i_size;
792
793 tmp_inode->i_atime =
794 cifs_NTtimeToUnix(le64_to_cpu(pData->LastAccessTime));
795 tmp_inode->i_mtime =
796 cifs_NTtimeToUnix(le64_to_cpu(pData->LastModificationTime));
797 tmp_inode->i_ctime =
798 cifs_NTtimeToUnix(le64_to_cpu(pData->LastStatusChange));
799
800 tmp_inode->i_mode = le64_to_cpu(pData->Permissions);
801 /* since we set the inode type below we need to mask off type
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000802 to avoid strange results if bits above were corrupt */
803 tmp_inode->i_mode &= ~S_IFMT;
Steve French2dd29d32007-04-23 22:07:35 +0000804 if (type == UNIX_FILE) {
805 *pobject_type = DT_REG;
806 tmp_inode->i_mode |= S_IFREG;
807 } else if (type == UNIX_SYMLINK) {
808 *pobject_type = DT_LNK;
809 tmp_inode->i_mode |= S_IFLNK;
810 } else if (type == UNIX_DIR) {
811 *pobject_type = DT_DIR;
812 tmp_inode->i_mode |= S_IFDIR;
813 } else if (type == UNIX_CHARDEV) {
814 *pobject_type = DT_CHR;
815 tmp_inode->i_mode |= S_IFCHR;
816 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
817 le64_to_cpu(pData->DevMinor) & MINORMASK);
818 } else if (type == UNIX_BLOCKDEV) {
819 *pobject_type = DT_BLK;
820 tmp_inode->i_mode |= S_IFBLK;
821 tmp_inode->i_rdev = MKDEV(le64_to_cpu(pData->DevMajor),
822 le64_to_cpu(pData->DevMinor) & MINORMASK);
823 } else if (type == UNIX_FIFO) {
824 *pobject_type = DT_FIFO;
825 tmp_inode->i_mode |= S_IFIFO;
826 } else if (type == UNIX_SOCKET) {
827 *pobject_type = DT_SOCK;
828 tmp_inode->i_mode |= S_IFSOCK;
829 } else {
830 /* safest to just call it a file */
831 *pobject_type = DT_REG;
832 tmp_inode->i_mode |= S_IFREG;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000833 cFYI(1, ("unknown inode type %d", type));
Steve French2dd29d32007-04-23 22:07:35 +0000834 }
835
Steve French90c81e02008-02-12 20:32:36 +0000836 cFYI(DBG2, ("object type: %d", type));
Steve French2dd29d32007-04-23 22:07:35 +0000837 tmp_inode->i_uid = le64_to_cpu(pData->Uid);
838 tmp_inode->i_gid = le64_to_cpu(pData->Gid);
839 tmp_inode->i_nlink = le64_to_cpu(pData->Nlinks);
840
841 spin_lock(&tmp_inode->i_lock);
842 if (is_size_safe_to_change(cifsInfo, end_of_file)) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000843 /* can not safely change the file size here if the
Steve French2dd29d32007-04-23 22:07:35 +0000844 client is writing to it due to potential races */
845 i_size_write(tmp_inode, end_of_file);
846
847 /* 512 bytes (2**9) is the fake blocksize that must be used */
848 /* for this calculation, not the real blocksize */
849 tmp_inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
850 }
851 spin_unlock(&tmp_inode->i_lock);
852
853 if (S_ISREG(tmp_inode->i_mode)) {
854 cFYI(1, ("File inode"));
855 tmp_inode->i_op = &cifs_file_inode_ops;
856
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000857 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
858 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French2dd29d32007-04-23 22:07:35 +0000859 tmp_inode->i_fop = &cifs_file_direct_nobrl_ops;
860 else
861 tmp_inode->i_fop = &cifs_file_direct_ops;
Steve French50c2f752007-07-13 00:33:32 +0000862
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000863 } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
Steve French2dd29d32007-04-23 22:07:35 +0000864 tmp_inode->i_fop = &cifs_file_nobrl_ops;
865 else
866 tmp_inode->i_fop = &cifs_file_ops;
867
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000868 if ((cifs_sb->tcon) && (cifs_sb->tcon->ses) &&
869 (cifs_sb->tcon->ses->server->maxBuf <
Steve French2dd29d32007-04-23 22:07:35 +0000870 PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE))
871 tmp_inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
872 else
873 tmp_inode->i_data.a_ops = &cifs_addr_ops;
874
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000875 if (isNewInode)
876 return; /* No sense invalidating pages for new inode
877 since we we have not started caching
878 readahead file data yet */
Steve French2dd29d32007-04-23 22:07:35 +0000879
880 if (timespec_equal(&tmp_inode->i_mtime, &local_mtime) &&
881 (local_size == tmp_inode->i_size)) {
882 cFYI(1, ("inode exists but unchanged"));
883 } else {
884 /* file may have changed on server */
885 cFYI(1, ("invalidate inode, readdir detected change"));
886 invalidate_remote_inode(tmp_inode);
887 }
888 } else if (S_ISDIR(tmp_inode->i_mode)) {
889 cFYI(1, ("Directory inode"));
890 tmp_inode->i_op = &cifs_dir_inode_ops;
891 tmp_inode->i_fop = &cifs_dir_ops;
892 } else if (S_ISLNK(tmp_inode->i_mode)) {
893 cFYI(1, ("Symbolic Link inode"));
894 tmp_inode->i_op = &cifs_symlink_inode_ops;
895/* tmp_inode->i_fop = *//* do not need to set to anything */
896 } else {
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000897 cFYI(1, ("Special inode"));
Steve French2dd29d32007-04-23 22:07:35 +0000898 init_special_inode(tmp_inode, tmp_inode->i_mode,
899 tmp_inode->i_rdev);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000900 }
Steve French2dd29d32007-04-23 22:07:35 +0000901}
902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
904{
905 int rc = 0;
906 int xid;
907 struct cifs_sb_info *cifs_sb;
908 struct cifsTconInfo *pTcon;
909 char *full_path = NULL;
910 struct inode *newinode = NULL;
911
Steve French6473a552005-11-29 20:20:10 -0800912 cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913
914 xid = GetXid();
915
916 cifs_sb = CIFS_SB(inode->i_sb);
917 pTcon = cifs_sb->tcon;
918
Steve French7f573562005-08-30 11:32:14 -0700919 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 if (full_path == NULL) {
921 FreeXid(xid);
922 return -ENOMEM;
923 }
Steve French50c2f752007-07-13 00:33:32 +0000924
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000925 if ((pTcon->ses->capabilities & CAP_UNIX) &&
926 (CIFS_UNIX_POSIX_PATH_OPS_CAP &
Steve French2dd29d32007-04-23 22:07:35 +0000927 le64_to_cpu(pTcon->fsUnixInfo.Capability))) {
928 u32 oplock = 0;
Steve Frenchf6d09982008-01-08 23:18:22 +0000929 FILE_UNIX_BASIC_INFO *pInfo =
Steve French2dd29d32007-04-23 22:07:35 +0000930 kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000931 if (pInfo == NULL) {
Steve French2dd29d32007-04-23 22:07:35 +0000932 rc = -ENOMEM;
933 goto mkdir_out;
934 }
Steve French50c2f752007-07-13 00:33:32 +0000935
Jeffa8cd9252007-09-13 18:38:50 +0000936 mode &= ~current->fs->umask;
Steve French2dd29d32007-04-23 22:07:35 +0000937 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
938 mode, NULL /* netfid */, pInfo, &oplock,
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000939 full_path, cifs_sb->local_nls,
940 cifs_sb->mnt_cifs_flags &
Steve French2dd29d32007-04-23 22:07:35 +0000941 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchc45d7072007-09-17 02:04:21 +0000942 if (rc == -EOPNOTSUPP) {
943 kfree(pInfo);
944 goto mkdir_retry_old;
945 } else if (rc) {
Steve French2dd29d32007-04-23 22:07:35 +0000946 cFYI(1, ("posix mkdir returned 0x%x", rc));
947 d_drop(direntry);
948 } else {
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000949 int obj_type;
Cyril Gorcunov8f2376a2007-10-14 17:58:43 +0000950 if (pInfo->Type == cpu_to_le32(-1)) {
951 /* no return info, go query for it */
Steve French5a07cdf2007-09-16 23:12:47 +0000952 kfree(pInfo);
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000953 goto mkdir_get_info;
Steve French5a07cdf2007-09-16 23:12:47 +0000954 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000955/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
956 to set uid/gid */
Steve French2dd29d32007-04-23 22:07:35 +0000957 inc_nlink(inode);
958 if (pTcon->nocase)
959 direntry->d_op = &cifs_ci_dentry_ops;
960 else
961 direntry->d_op = &cifs_dentry_ops;
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000962
963 newinode = new_inode(inode->i_sb);
Steve French5a07cdf2007-09-16 23:12:47 +0000964 if (newinode == NULL) {
965 kfree(pInfo);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000966 goto mkdir_get_info;
Steve French5a07cdf2007-09-16 23:12:47 +0000967 }
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000968 /* Is an i_ino of zero legal? */
969 /* Are there sanity checks we can use to ensure that
970 the server is really filling in that field? */
971 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
972 newinode->i_ino =
973 (unsigned long)pInfo->UniqueId;
974 } /* note ino incremented to unique num in new_inode */
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000975 if (inode->i_sb->s_flags & MS_NOATIME)
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000976 newinode->i_flags |= S_NOATIME | S_NOCMTIME;
977 newinode->i_nlink = 2;
978
979 insert_inode_hash(newinode);
Steve French2dd29d32007-04-23 22:07:35 +0000980 d_instantiate(direntry, newinode);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000981
982 /* we already checked in POSIXCreate whether
983 frame was long enough */
984 posix_fill_in_inode(direntry->d_inode,
Steve French2dd29d32007-04-23 22:07:35 +0000985 pInfo, &obj_type, 1 /* NewInode */);
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000986#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000987 cFYI(1, ("instantiated dentry %p %s to inode %p",
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000988 direntry, direntry->d_name.name, newinode));
989
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000990 if (newinode->i_nlink != 2)
991 cFYI(1, ("unexpected number of links %d",
Steve Frenchcbac3cb2007-04-25 11:46:06 +0000992 newinode->i_nlink));
993#endif
Steve French2dd29d32007-04-23 22:07:35 +0000994 }
995 kfree(pInfo);
996 goto mkdir_out;
Steve Frenchfb8c4b12007-07-10 01:16:18 +0000997 }
Steve Frenchc45d7072007-09-17 02:04:21 +0000998mkdir_retry_old:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 /* BB add setting the equivalent of mode via CreateX w/ACLs */
Steve French737b7582005-04-28 22:41:06 -07001000 rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
1001 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 if (rc) {
Steve French26a21b92006-05-31 18:05:34 +00001003 cFYI(1, ("cifs_mkdir returned 0x%x", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004 d_drop(direntry);
1005 } else {
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001006mkdir_get_info:
Dave Hansend8c76e62006-09-30 23:29:04 -07001007 inc_nlink(inode);
Steve Frenchc18c8422007-07-18 23:21:09 +00001008 if (pTcon->unix_ext)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 rc = cifs_get_inode_info_unix(&newinode, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001010 inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 else
1012 rc = cifs_get_inode_info(&newinode, full_path, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001013 inode->i_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014
Steve Frenchb92327f2005-08-22 20:09:43 -07001015 if (pTcon->nocase)
1016 direntry->d_op = &cifs_ci_dentry_ops;
1017 else
1018 direntry->d_op = &cifs_dentry_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 d_instantiate(direntry, newinode);
Steve French2dd29d32007-04-23 22:07:35 +00001020 /* setting nlink not necessary except in cases where we
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001021 * failed to get it from the server or was set bogus */
Steve French2dd29d32007-04-23 22:07:35 +00001022 if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001023 direntry->d_inode->i_nlink = 2;
Steve Frenchc18c8422007-07-18 23:21:09 +00001024 if (pTcon->unix_ext) {
Steve French3ce53fc2007-06-08 14:55:14 +00001025 mode &= ~current->fs->umask;
Steve Frenchd0d2f2d2005-06-02 15:12:36 -07001026 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1028 mode,
Steve French83451872005-12-01 17:12:59 -08001029 (__u64)current->fsuid,
1030 (__u64)current->fsgid,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 0 /* dev_t */,
Steve French737b7582005-04-28 22:41:06 -07001032 cifs_sb->local_nls,
1033 cifs_sb->mnt_cifs_flags &
1034 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 } else {
1036 CIFSSMBUnixSetPerms(xid, pTcon, full_path,
1037 mode, (__u64)-1,
1038 (__u64)-1, 0 /* dev_t */,
Steve French737b7582005-04-28 22:41:06 -07001039 cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001040 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001041 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 }
Steve French3ce53fc2007-06-08 14:55:14 +00001043 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 /* BB to be implemented via Windows secrty descriptors
1045 eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
1046 -1, -1, local_nls); */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001047 if (direntry->d_inode) {
Steve French6473a552005-11-29 20:20:10 -08001048 direntry->d_inode->i_mode = mode;
Steve French25741b32005-11-29 22:38:43 -08001049 direntry->d_inode->i_mode |= S_IFDIR;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001050 if (cifs_sb->mnt_cifs_flags &
Steve French6473a552005-11-29 20:20:10 -08001051 CIFS_MOUNT_SET_UID) {
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001052 direntry->d_inode->i_uid =
Steve French6473a552005-11-29 20:20:10 -08001053 current->fsuid;
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001054 direntry->d_inode->i_gid =
Steve French6473a552005-11-29 20:20:10 -08001055 current->fsgid;
1056 }
1057 }
Steve French2a138ebb2005-11-29 21:22:19 -08001058 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001060mkdir_out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 kfree(full_path);
1062 FreeXid(xid);
1063 return rc;
1064}
1065
1066int cifs_rmdir(struct inode *inode, struct dentry *direntry)
1067{
1068 int rc = 0;
1069 int xid;
1070 struct cifs_sb_info *cifs_sb;
1071 struct cifsTconInfo *pTcon;
1072 char *full_path = NULL;
1073 struct cifsInodeInfo *cifsInode;
1074
Steve French26a21b92006-05-31 18:05:34 +00001075 cFYI(1, ("cifs_rmdir, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001076
1077 xid = GetXid();
1078
1079 cifs_sb = CIFS_SB(inode->i_sb);
1080 pTcon = cifs_sb->tcon;
1081
Steve French7f573562005-08-30 11:32:14 -07001082 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 if (full_path == NULL) {
1084 FreeXid(xid);
1085 return -ENOMEM;
1086 }
1087
Steve French737b7582005-04-28 22:41:06 -07001088 rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
1089 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090
1091 if (!rc) {
Dave Hansen9a53c3a2006-09-30 23:29:03 -07001092 drop_nlink(inode);
Steve French3677db12007-02-26 16:46:11 +00001093 spin_lock(&direntry->d_inode->i_lock);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001094 i_size_write(direntry->d_inode, 0);
Dave Hansence71ec32006-09-30 23:29:06 -07001095 clear_nlink(direntry->d_inode);
Steve French3677db12007-02-26 16:46:11 +00001096 spin_unlock(&direntry->d_inode->i_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 }
1098
1099 cifsInode = CIFS_I(direntry->d_inode);
1100 cifsInode->time = 0; /* force revalidate to go get info when
1101 needed */
1102 direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
1103 current_fs_time(inode->i_sb);
1104
1105 kfree(full_path);
1106 FreeXid(xid);
1107 return rc;
1108}
1109
1110int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
1111 struct inode *target_inode, struct dentry *target_direntry)
1112{
1113 char *fromName;
1114 char *toName;
1115 struct cifs_sb_info *cifs_sb_source;
1116 struct cifs_sb_info *cifs_sb_target;
1117 struct cifsTconInfo *pTcon;
1118 int xid;
1119 int rc = 0;
1120
1121 xid = GetXid();
1122
1123 cifs_sb_target = CIFS_SB(target_inode->i_sb);
1124 cifs_sb_source = CIFS_SB(source_inode->i_sb);
1125 pTcon = cifs_sb_source->tcon;
1126
1127 if (pTcon != cifs_sb_target->tcon) {
1128 FreeXid(xid);
1129 return -EXDEV; /* BB actually could be allowed if same server,
1130 but different share.
1131 Might eventually add support for this */
1132 }
1133
1134 /* we already have the rename sem so we do not need to grab it again
1135 here to protect the path integrity */
Steve French7f573562005-08-30 11:32:14 -07001136 fromName = build_path_from_dentry(source_direntry);
1137 toName = build_path_from_dentry(target_direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 if ((fromName == NULL) || (toName == NULL)) {
1139 rc = -ENOMEM;
1140 goto cifs_rename_exit;
1141 }
1142
1143 rc = CIFSSMBRename(xid, pTcon, fromName, toName,
Steve French737b7582005-04-28 22:41:06 -07001144 cifs_sb_source->local_nls,
1145 cifs_sb_source->mnt_cifs_flags &
1146 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 if (rc == -EEXIST) {
1148 /* check if they are the same file because rename of hardlinked
1149 files is a noop */
1150 FILE_UNIX_BASIC_INFO *info_buf_source;
1151 FILE_UNIX_BASIC_INFO *info_buf_target;
1152
1153 info_buf_source =
1154 kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
1155 if (info_buf_source != NULL) {
1156 info_buf_target = info_buf_source + 1;
Steve Frenchc18c8422007-07-18 23:21:09 +00001157 if (pTcon->unix_ext)
Steve French8e87d4d2006-11-02 03:45:24 +00001158 rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001159 info_buf_source,
Steve French8e87d4d2006-11-02 03:45:24 +00001160 cifs_sb_source->local_nls,
1161 cifs_sb_source->mnt_cifs_flags &
1162 CIFS_MOUNT_MAP_SPECIAL_CHR);
1163 /* else rc is still EEXIST so will fall through to
1164 unlink the target and retry rename */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 if (rc == 0) {
1166 rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
1167 info_buf_target,
Steve French737b7582005-04-28 22:41:06 -07001168 cifs_sb_target->local_nls,
1169 /* remap based on source sb */
1170 cifs_sb_source->mnt_cifs_flags &
1171 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172 }
1173 if ((rc == 0) &&
1174 (info_buf_source->UniqueId ==
1175 info_buf_target->UniqueId)) {
1176 /* do not rename since the files are hardlinked which
1177 is a noop */
1178 } else {
1179 /* we either can not tell the files are hardlinked
1180 (as with Windows servers) or files are not
1181 hardlinked so delete the target manually before
1182 renaming to follow POSIX rather than Windows
1183 semantics */
1184 cifs_unlink(target_inode, target_direntry);
1185 rc = CIFSSMBRename(xid, pTcon, fromName,
1186 toName,
Steve French737b7582005-04-28 22:41:06 -07001187 cifs_sb_source->local_nls,
1188 cifs_sb_source->mnt_cifs_flags
1189 & CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190 }
1191 kfree(info_buf_source);
1192 } /* if we can not get memory just leave rc as EEXIST */
1193 }
1194
Steve Frenchad7a2922008-02-07 23:25:02 +00001195 if (rc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 cFYI(1, ("rename rc %d", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
1198 if ((rc == -EIO) || (rc == -EEXIST)) {
1199 int oplock = FALSE;
1200 __u16 netfid;
1201
1202 /* BB FIXME Is Generic Read correct for rename? */
1203 /* if renaming directory - we should not say CREATE_NOT_DIR,
1204 need to test renaming open directory, also GENERIC_READ
1205 might not right be right access to request */
1206 rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
1207 CREATE_NOT_DIR, &netfid, &oplock, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001208 cifs_sb_source->local_nls,
1209 cifs_sb_source->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001210 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001211 if (rc == 0) {
Steve French8e87d4d2006-11-02 03:45:24 +00001212 rc = CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001213 cifs_sb_source->local_nls,
Steve French737b7582005-04-28 22:41:06 -07001214 cifs_sb_source->mnt_cifs_flags &
1215 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216 CIFSSMBClose(xid, pTcon, netfid);
1217 }
1218 }
1219
1220cifs_rename_exit:
1221 kfree(fromName);
1222 kfree(toName);
1223 FreeXid(xid);
1224 return rc;
1225}
1226
1227int cifs_revalidate(struct dentry *direntry)
1228{
1229 int xid;
Jeff Laytoncea21802007-11-20 23:19:03 +00001230 int rc = 0, wbrc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231 char *full_path;
1232 struct cifs_sb_info *cifs_sb;
1233 struct cifsInodeInfo *cifsInode;
1234 loff_t local_size;
1235 struct timespec local_mtime;
1236 int invalidate_inode = FALSE;
1237
1238 if (direntry->d_inode == NULL)
1239 return -ENOENT;
1240
1241 cifsInode = CIFS_I(direntry->d_inode);
1242
1243 if (cifsInode == NULL)
1244 return -ENOENT;
1245
1246 /* no sense revalidating inode info on file that no one can write */
1247 if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
1248 return rc;
1249
1250 xid = GetXid();
1251
1252 cifs_sb = CIFS_SB(direntry->d_sb);
1253
1254 /* can not safely grab the rename sem here if rename calls revalidate
1255 since that would deadlock */
Steve French7f573562005-08-30 11:32:14 -07001256 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257 if (full_path == NULL) {
1258 FreeXid(xid);
1259 return -ENOMEM;
1260 }
1261 cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
1262 "jiffies %ld", full_path, direntry->d_inode,
1263 direntry->d_inode->i_count.counter, direntry,
1264 direntry->d_time, jiffies));
1265
1266 if (cifsInode->time == 0) {
1267 /* was set to zero previously to force revalidate */
1268 } else if (time_before(jiffies, cifsInode->time + HZ) &&
1269 lookupCacheEnabled) {
1270 if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
1271 (direntry->d_inode->i_nlink == 1)) {
1272 kfree(full_path);
1273 FreeXid(xid);
1274 return rc;
1275 } else {
1276 cFYI(1, ("Have to revalidate file due to hardlinks"));
1277 }
1278 }
1279
1280 /* save mtime and size */
1281 local_mtime = direntry->d_inode->i_mtime;
1282 local_size = direntry->d_inode->i_size;
1283
Steve Frenchc18c8422007-07-18 23:21:09 +00001284 if (cifs_sb->tcon->unix_ext) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001286 direntry->d_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 if (rc) {
1288 cFYI(1, ("error on getting revalidate info %d", rc));
1289/* if (rc != -ENOENT)
1290 rc = 0; */ /* BB should we cache info on
1291 certain errors? */
1292 }
1293 } else {
1294 rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001295 direntry->d_sb, xid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296 if (rc) {
1297 cFYI(1, ("error on getting revalidate info %d", rc));
1298/* if (rc != -ENOENT)
1299 rc = 0; */ /* BB should we cache info on
1300 certain errors? */
1301 }
1302 }
1303 /* should we remap certain errors, access denied?, to zero */
1304
1305 /* if not oplocked, we invalidate inode pages if mtime or file size
1306 had changed on server */
1307
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001308 if (timespec_equal(&local_mtime, &direntry->d_inode->i_mtime) &&
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309 (local_size == direntry->d_inode->i_size)) {
1310 cFYI(1, ("cifs_revalidate - inode unchanged"));
1311 } else {
1312 /* file may have changed on server */
1313 if (cifsInode->clientCanCacheRead) {
1314 /* no need to invalidate inode pages since we were the
1315 only ones who could have modified the file and the
1316 server copy is staler than ours */
1317 } else {
1318 invalidate_inode = TRUE;
1319 }
1320 }
1321
1322 /* can not grab this sem since kernel filesys locking documentation
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001323 indicates i_mutex may be taken by the kernel on lookup and rename
1324 which could deadlock if we grab the i_mutex here as well */
1325/* mutex_lock(&direntry->d_inode->i_mutex);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 /* need to write out dirty pages here */
1327 if (direntry->d_inode->i_mapping) {
1328 /* do we need to lock inode until after invalidate completes
1329 below? */
Jeff Laytoncea21802007-11-20 23:19:03 +00001330 wbrc = filemap_fdatawrite(direntry->d_inode->i_mapping);
1331 if (wbrc)
1332 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 }
1334 if (invalidate_inode) {
Steve French3abb9272005-11-28 08:16:13 -08001335 /* shrink_dcache not necessary now that cifs dentry ops
1336 are exported for negative dentries */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001337/* if (S_ISDIR(direntry->d_inode->i_mode))
Steve French3abb9272005-11-28 08:16:13 -08001338 shrink_dcache_parent(direntry); */
1339 if (S_ISREG(direntry->d_inode->i_mode)) {
1340 if (direntry->d_inode->i_mapping)
Jeff Laytoncea21802007-11-20 23:19:03 +00001341 wbrc = filemap_fdatawait(direntry->d_inode->i_mapping);
1342 if (wbrc)
1343 CIFS_I(direntry->d_inode)->write_behind_rc = wbrc;
Steve French3abb9272005-11-28 08:16:13 -08001344 /* may eventually have to do this for open files too */
1345 if (list_empty(&(cifsInode->openFileList))) {
1346 /* changed on server - flush read ahead pages */
1347 cFYI(1, ("Invalidating read ahead data on "
1348 "closed file"));
1349 invalidate_remote_inode(direntry->d_inode);
1350 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001351 }
1352 }
Jes Sorensen1b1dcc12006-01-09 15:59:24 -08001353/* mutex_unlock(&direntry->d_inode->i_mutex); */
Steve French50c2f752007-07-13 00:33:32 +00001354
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355 kfree(full_path);
1356 FreeXid(xid);
1357 return rc;
1358}
1359
1360int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
1361 struct kstat *stat)
1362{
1363 int err = cifs_revalidate(dentry);
Steve French5fe14c82006-11-07 19:26:33 +00001364 if (!err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001365 generic_fillattr(dentry->d_inode, stat);
Steve French5fe14c82006-11-07 19:26:33 +00001366 stat->blksize = CIFS_MAX_MSGSIZE;
1367 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368 return err;
1369}
1370
1371static int cifs_truncate_page(struct address_space *mapping, loff_t from)
1372{
1373 pgoff_t index = from >> PAGE_CACHE_SHIFT;
1374 unsigned offset = from & (PAGE_CACHE_SIZE - 1);
1375 struct page *page;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 int rc = 0;
1377
1378 page = grab_cache_page(mapping, index);
1379 if (!page)
1380 return -ENOMEM;
1381
Christoph Lametereebd2aa2008-02-04 22:28:29 -08001382 zero_user_segment(page, offset, PAGE_CACHE_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 unlock_page(page);
1384 page_cache_release(page);
1385 return rc;
1386}
1387
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001388static int cifs_vmtruncate(struct inode *inode, loff_t offset)
Steve French3677db12007-02-26 16:46:11 +00001389{
1390 struct address_space *mapping = inode->i_mapping;
1391 unsigned long limit;
1392
Steve Frenchba6a46a2007-02-26 20:06:29 +00001393 spin_lock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001394 if (inode->i_size < offset)
1395 goto do_expand;
1396 /*
1397 * truncation of in-use swapfiles is disallowed - it would cause
1398 * subsequent swapout to scribble on the now-freed blocks.
1399 */
Steve Frenchba6a46a2007-02-26 20:06:29 +00001400 if (IS_SWAPFILE(inode)) {
1401 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001402 goto out_busy;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001403 }
Steve French3677db12007-02-26 16:46:11 +00001404 i_size_write(inode, offset);
1405 spin_unlock(&inode->i_lock);
Steve French8064ab42007-08-22 22:12:07 +00001406 /*
1407 * unmap_mapping_range is called twice, first simply for efficiency
1408 * so that truncate_inode_pages does fewer single-page unmaps. However
1409 * after this first call, and before truncate_inode_pages finishes,
1410 * it is possible for private pages to be COWed, which remain after
1411 * truncate_inode_pages finishes, hence the second unmap_mapping_range
1412 * call must be made for correctness.
1413 */
Steve French3677db12007-02-26 16:46:11 +00001414 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
1415 truncate_inode_pages(mapping, offset);
Steve French8064ab42007-08-22 22:12:07 +00001416 unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
Steve French3677db12007-02-26 16:46:11 +00001417 goto out_truncate;
1418
1419do_expand:
1420 limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001421 if (limit != RLIM_INFINITY && offset > limit) {
1422 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001423 goto out_sig;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001424 }
1425 if (offset > inode->i_sb->s_maxbytes) {
1426 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001427 goto out_big;
Steve Frenchba6a46a2007-02-26 20:06:29 +00001428 }
Steve French3677db12007-02-26 16:46:11 +00001429 i_size_write(inode, offset);
Steve Frenchba6a46a2007-02-26 20:06:29 +00001430 spin_unlock(&inode->i_lock);
Steve French3677db12007-02-26 16:46:11 +00001431out_truncate:
1432 if (inode->i_op && inode->i_op->truncate)
1433 inode->i_op->truncate(inode);
1434 return 0;
1435out_sig:
1436 send_sig(SIGXFSZ, current, 0);
1437out_big:
1438 return -EFBIG;
1439out_busy:
1440 return -ETXTBSY;
1441}
1442
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
1444{
1445 int xid;
1446 struct cifs_sb_info *cifs_sb;
1447 struct cifsTconInfo *pTcon;
1448 char *full_path = NULL;
1449 int rc = -EACCES;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450 struct cifsFileInfo *open_file = NULL;
1451 FILE_BASIC_INFO time_buf;
1452 int set_time = FALSE;
Steve French066fcb02007-03-23 00:45:08 +00001453 int set_dosattr = FALSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001454 __u64 mode = 0xFFFFFFFFFFFFFFFFULL;
1455 __u64 uid = 0xFFFFFFFFFFFFFFFFULL;
1456 __u64 gid = 0xFFFFFFFFFFFFFFFFULL;
1457 struct cifsInodeInfo *cifsInode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458
1459 xid = GetXid();
1460
Steve French39798772006-05-31 22:40:51 +00001461 cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 direntry->d_name.name, attrs->ia_valid));
Steve French6473a552005-11-29 20:20:10 -08001463
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
1465 pTcon = cifs_sb->tcon;
1466
Steve French2a138ebb2005-11-29 21:22:19 -08001467 if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
Steve French6473a552005-11-29 20:20:10 -08001468 /* check if we have permission to change attrs */
1469 rc = inode_change_ok(direntry->d_inode, attrs);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001470 if (rc < 0) {
Steve French6473a552005-11-29 20:20:10 -08001471 FreeXid(xid);
1472 return rc;
1473 } else
1474 rc = 0;
1475 }
Steve French50c2f752007-07-13 00:33:32 +00001476
Steve French7f573562005-08-30 11:32:14 -07001477 full_path = build_path_from_dentry(direntry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478 if (full_path == NULL) {
1479 FreeXid(xid);
1480 return -ENOMEM;
1481 }
1482 cifsInode = CIFS_I(direntry->d_inode);
1483
1484 /* BB check if we need to refresh inode from server now ? BB */
1485
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486 if (attrs->ia_valid & ATTR_SIZE) {
Jeff Laytoncea21802007-11-20 23:19:03 +00001487 /*
1488 Flush data before changing file size on server. If the
1489 flush returns error, store it to report later and continue.
1490 BB: This should be smarter. Why bother flushing pages that
1491 will be truncated anyway? Also, should we error out here if
1492 the flush returns error?
1493 */
1494 rc = filemap_write_and_wait(direntry->d_inode->i_mapping);
1495 if (rc != 0) {
1496 CIFS_I(direntry->d_inode)->write_behind_rc = rc;
1497 rc = 0;
1498 }
1499
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500 /* To avoid spurious oplock breaks from server, in the case of
1501 inodes that we already have open, avoid doing path based
1502 setting of file size if we can do it by handle.
1503 This keeps our caching token (oplock) and avoids timeouts
1504 when the local oplock break takes longer to flush
1505 writebehind data than the SMB timeout for the SetPathInfo
1506 request would allow */
Steve French39798772006-05-31 22:40:51 +00001507
Steve French6148a742005-10-05 12:23:19 -07001508 open_file = find_writable_file(cifsInode);
1509 if (open_file) {
1510 __u16 nfid = open_file->netfid;
1511 __u32 npid = open_file->pid;
1512 rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
1513 nfid, npid, FALSE);
Steve French23e7dd72005-10-20 13:44:56 -07001514 atomic_dec(&open_file->wrtPending);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001515 cFYI(1, ("SetFSize for attrs rc = %d", rc));
1516 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
Steve French77159b42007-08-31 01:10:17 +00001517 unsigned int bytes_written;
Steve French6148a742005-10-05 12:23:19 -07001518 rc = CIFSSMBWrite(xid, pTcon,
1519 nfid, 0, attrs->ia_size,
1520 &bytes_written, NULL, NULL,
1521 1 /* 45 seconds */);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001522 cFYI(1, ("Wrt seteof rc %d", rc));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001523 }
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001524 } else
Steve French6473a552005-11-29 20:20:10 -08001525 rc = -EINVAL;
1526
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527 if (rc != 0) {
1528 /* Set file size by pathname rather than by handle
1529 either because no valid, writeable file handle for
1530 it was found or because there was an error setting
1531 it by handle */
1532 rc = CIFSSMBSetEOF(xid, pTcon, full_path,
1533 attrs->ia_size, FALSE,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001534 cifs_sb->local_nls,
Steve French737b7582005-04-28 22:41:06 -07001535 cifs_sb->mnt_cifs_flags &
1536 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenche30dcf32005-09-20 20:49:16 -07001537 cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001538 if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001539 __u16 netfid;
1540 int oplock = FALSE;
1541
1542 rc = SMBLegacyOpen(xid, pTcon, full_path,
1543 FILE_OPEN,
1544 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1545 CREATE_NOT_DIR, &netfid, &oplock,
1546 NULL, cifs_sb->local_nls,
1547 cifs_sb->mnt_cifs_flags &
1548 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001549 if (rc == 0) {
Steve French77159b42007-08-31 01:10:17 +00001550 unsigned int bytes_written;
Steve Frenche30dcf32005-09-20 20:49:16 -07001551 rc = CIFSSMBWrite(xid, pTcon,
1552 netfid, 0,
1553 attrs->ia_size,
1554 &bytes_written, NULL,
1555 NULL, 1 /* 45 sec */);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001556 cFYI(1, ("wrt seteof rc %d", rc));
Steve Frenche30dcf32005-09-20 20:49:16 -07001557 CIFSSMBClose(xid, pTcon, netfid);
1558 }
1559
1560 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001561 }
1562
1563 /* Server is ok setting allocation size implicitly - no need
1564 to call:
1565 CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
1566 cifs_sb->local_nls);
1567 */
1568
1569 if (rc == 0) {
Steve French3677db12007-02-26 16:46:11 +00001570 rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571 cifs_truncate_page(direntry->d_inode->i_mapping,
1572 direntry->d_inode->i_size);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001573 } else
Steve Frenche30dcf32005-09-20 20:49:16 -07001574 goto cifs_setattr_exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001575 }
1576 if (attrs->ia_valid & ATTR_UID) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001577 cFYI(1, ("UID changed to %d", attrs->ia_uid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578 uid = attrs->ia_uid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579 }
1580 if (attrs->ia_valid & ATTR_GID) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001581 cFYI(1, ("GID changed to %d", attrs->ia_gid));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582 gid = attrs->ia_gid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583 }
1584
1585 time_buf.Attributes = 0;
Jeff Laytond32c4f22007-10-18 03:05:22 -07001586
1587 /* skip mode change if it's just for clearing setuid/setgid */
1588 if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID))
1589 attrs->ia_valid &= ~ATTR_MODE;
1590
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591 if (attrs->ia_valid & ATTR_MODE) {
Steve Frenche30dcf32005-09-20 20:49:16 -07001592 cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001593 mode = attrs->ia_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001594 }
1595
Steve Frenchc18c8422007-07-18 23:21:09 +00001596 if ((pTcon->unix_ext)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597 && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
1598 rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
Steve French737b7582005-04-28 22:41:06 -07001599 0 /* dev_t */, cifs_sb->local_nls,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001600 cifs_sb->mnt_cifs_flags &
Steve French737b7582005-04-28 22:41:06 -07001601 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602 else if (attrs->ia_valid & ATTR_MODE) {
Steve Frenchcdbce9c2005-11-19 21:04:52 -08001603 rc = 0;
Steve French97837582007-12-31 07:47:21 +00001604#ifdef CONFIG_CIFS_EXPERIMENTAL
1605 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1606 rc = mode_to_acl(direntry->d_inode, full_path, mode);
Steve Frenchf6d09982008-01-08 23:18:22 +00001607 else if ((mode & S_IWUGO) == 0) {
Steve French97837582007-12-31 07:47:21 +00001608#else
Steve Frenchf6d09982008-01-08 23:18:22 +00001609 if ((mode & S_IWUGO) == 0) {
Steve French97837582007-12-31 07:47:21 +00001610#endif
Steve Frenchf6d09982008-01-08 23:18:22 +00001611 /* not writeable */
Steve French066fcb02007-03-23 00:45:08 +00001612 if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) {
1613 set_dosattr = TRUE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 time_buf.Attributes =
1615 cpu_to_le32(cifsInode->cifsAttrs |
1616 ATTR_READONLY);
Steve French066fcb02007-03-23 00:45:08 +00001617 }
Steve French5268df22007-04-06 19:28:16 +00001618 } else if (cifsInode->cifsAttrs & ATTR_READONLY) {
1619 /* If file is readonly on server, we would
1620 not be able to write to it - so if any write
1621 bit is enabled for user or group or other we
1622 need to at least try to remove r/o dos attr */
1623 set_dosattr = TRUE;
1624 time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs &
1625 (~ATTR_READONLY));
1626 /* Windows ignores set to zero */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001627 if (time_buf.Attributes == 0)
Steve French5268df22007-04-06 19:28:16 +00001628 time_buf.Attributes |= cpu_to_le32(ATTR_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629 }
Steve French97837582007-12-31 07:47:21 +00001630#ifdef CONFIG_CIFS_EXPERIMENTAL
1631 if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
1632 mode_to_acl(direntry->d_inode, full_path, mode);
1633#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001634 }
1635
1636 if (attrs->ia_valid & ATTR_ATIME) {
1637 set_time = TRUE;
1638 time_buf.LastAccessTime =
1639 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
1640 } else
1641 time_buf.LastAccessTime = 0;
1642
1643 if (attrs->ia_valid & ATTR_MTIME) {
1644 set_time = TRUE;
1645 time_buf.LastWriteTime =
1646 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
1647 } else
1648 time_buf.LastWriteTime = 0;
Steve Frenche30dcf32005-09-20 20:49:16 -07001649 /* Do not set ctime explicitly unless other time
1650 stamps are changed explicitly (i.e. by utime()
1651 since we would then have a mix of client and
1652 server times */
Steve French50c2f752007-07-13 00:33:32 +00001653
Steve Frenche30dcf32005-09-20 20:49:16 -07001654 if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 set_time = TRUE;
Steve Frenche30dcf32005-09-20 20:49:16 -07001656 /* Although Samba throws this field away
1657 it may be useful to Windows - but we do
1658 not want to set ctime unless some other
1659 timestamp is changing */
Steve French26a21b92006-05-31 18:05:34 +00001660 cFYI(1, ("CIFS - CTIME changed"));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661 time_buf.ChangeTime =
1662 cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
1663 } else
1664 time_buf.ChangeTime = 0;
1665
Steve French066fcb02007-03-23 00:45:08 +00001666 if (set_time || set_dosattr) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001667 time_buf.CreationTime = 0; /* do not change */
1668 /* In the future we should experiment - try setting timestamps
1669 via Handle (SetFileInfo) instead of by path */
1670 if (!(pTcon->ses->flags & CIFS_SES_NT4))
1671 rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
Steve French737b7582005-04-28 22:41:06 -07001672 cifs_sb->local_nls,
1673 cifs_sb->mnt_cifs_flags &
1674 CIFS_MOUNT_MAP_SPECIAL_CHR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001675 else
1676 rc = -EOPNOTSUPP;
1677
1678 if (rc == -EOPNOTSUPP) {
1679 int oplock = FALSE;
1680 __u16 netfid;
1681
1682 cFYI(1, ("calling SetFileInfo since SetPathInfo for "
1683 "times not supported by this server"));
1684 /* BB we could scan to see if we already have it open
1685 and pass in pid of opener to function */
1686 rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
1687 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
1688 CREATE_NOT_DIR, &netfid, &oplock,
Steve French737b7582005-04-28 22:41:06 -07001689 NULL, cifs_sb->local_nls,
1690 cifs_sb->mnt_cifs_flags &
1691 CIFS_MOUNT_MAP_SPECIAL_CHR);
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001692 if (rc == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693 rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
1694 netfid);
1695 CIFSSMBClose(xid, pTcon, netfid);
1696 } else {
1697 /* BB For even older servers we could convert time_buf
1698 into old DOS style which uses two second
1699 granularity */
1700
1701 /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001702 &time_buf, cifs_sb->local_nls); */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703 }
1704 }
Steve Frenche30dcf32005-09-20 20:49:16 -07001705 /* Even if error on time set, no sense failing the call if
1706 the server would set the time to a reasonable value anyway,
1707 and this check ensures that we are not being called from
1708 sys_utimes in which case we ought to fail the call back to
1709 the user when the server rejects the call */
Steve Frenchfb8c4b12007-07-10 01:16:18 +00001710 if ((rc) && (attrs->ia_valid &
Steve Frenche30dcf32005-09-20 20:49:16 -07001711 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
1712 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713 }
1714
1715 /* do not need local check to inode_check_ok since the server does
1716 that */
1717 if (!rc)
1718 rc = inode_setattr(direntry->d_inode, attrs);
Steve Frenche30dcf32005-09-20 20:49:16 -07001719cifs_setattr_exit:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 kfree(full_path);
1721 FreeXid(xid);
1722 return rc;
1723}
1724
Steve French99ee4db2007-02-27 05:35:17 +00001725#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726void cifs_delete_inode(struct inode *inode)
1727{
Steve French26a21b92006-05-31 18:05:34 +00001728 cFYI(1, ("In cifs_delete_inode, inode = 0x%p", inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001729 /* may have to add back in if and when safe distributed caching of
1730 directories added e.g. via FindNotify */
1731}
Steve French99ee4db2007-02-27 05:35:17 +00001732#endif