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1da177e4 LT |
1 | /* |
2 | * fs/cifs/inode.c | |
3 | * | |
f19159dc | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
1da177e4 LT |
5 | * 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> | |
1da177e4 | 22 | #include <linux/stat.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
1da177e4 LT |
24 | #include <linux/pagemap.h> |
25 | #include <asm/div64.h> | |
26 | #include "cifsfs.h" | |
27 | #include "cifspdu.h" | |
28 | #include "cifsglob.h" | |
29 | #include "cifsproto.h" | |
30 | #include "cifs_debug.h" | |
31 | #include "cifs_fs_sb.h" | |
9451a9a5 | 32 | #include "fscache.h" |
1da177e4 | 33 | |
70eff55d | 34 | |
7962670e | 35 | static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral) |
70eff55d CH |
36 | { |
37 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
38 | ||
39 | switch (inode->i_mode & S_IFMT) { | |
40 | case S_IFREG: | |
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; | |
45 | else | |
46 | inode->i_fop = &cifs_file_direct_ops; | |
47 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
48 | inode->i_fop = &cifs_file_nobrl_ops; | |
49 | else { /* not direct, send byte range locks */ | |
50 | inode->i_fop = &cifs_file_ops; | |
51 | } | |
52 | ||
53 | ||
54 | /* check if server can support readpages */ | |
0d424ad0 | 55 | if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf < |
70eff55d CH |
56 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
57 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; | |
58 | else | |
59 | inode->i_data.a_ops = &cifs_addr_ops; | |
60 | break; | |
61 | case S_IFDIR: | |
bc5b6e24 | 62 | #ifdef CONFIG_CIFS_DFS_UPCALL |
7962670e IM |
63 | if (is_dfs_referral) { |
64 | inode->i_op = &cifs_dfs_referral_inode_operations; | |
65 | } else { | |
bc5b6e24 SF |
66 | #else /* NO DFS support, treat as a directory */ |
67 | { | |
68 | #endif | |
7962670e IM |
69 | inode->i_op = &cifs_dir_inode_ops; |
70 | inode->i_fop = &cifs_dir_ops; | |
71 | } | |
70eff55d CH |
72 | break; |
73 | case S_IFLNK: | |
74 | inode->i_op = &cifs_symlink_inode_ops; | |
75 | break; | |
76 | default: | |
77 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
78 | break; | |
79 | } | |
80 | } | |
81 | ||
df2cf170 JL |
82 | /* check inode attributes against fattr. If they don't match, tag the |
83 | * inode for cache invalidation | |
84 | */ | |
85 | static void | |
86 | cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) | |
87 | { | |
88 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); | |
89 | ||
f19159dc | 90 | cFYI(1, "%s: revalidating inode %llu", __func__, cifs_i->uniqueid); |
df2cf170 JL |
91 | |
92 | if (inode->i_state & I_NEW) { | |
f19159dc | 93 | cFYI(1, "%s: inode %llu is new", __func__, cifs_i->uniqueid); |
df2cf170 JL |
94 | return; |
95 | } | |
96 | ||
97 | /* don't bother with revalidation if we have an oplock */ | |
98 | if (cifs_i->clientCanCacheRead) { | |
f19159dc SF |
99 | cFYI(1, "%s: inode %llu is oplocked", __func__, |
100 | cifs_i->uniqueid); | |
df2cf170 JL |
101 | return; |
102 | } | |
103 | ||
104 | /* revalidate if mtime or size have changed */ | |
105 | if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) && | |
106 | cifs_i->server_eof == fattr->cf_eof) { | |
f19159dc SF |
107 | cFYI(1, "%s: inode %llu is unchanged", __func__, |
108 | cifs_i->uniqueid); | |
df2cf170 JL |
109 | return; |
110 | } | |
111 | ||
f19159dc SF |
112 | cFYI(1, "%s: invalidating inode %llu mapping", __func__, |
113 | cifs_i->uniqueid); | |
df2cf170 JL |
114 | cifs_i->invalid_mapping = true; |
115 | } | |
116 | ||
cc0bad75 JL |
117 | /* populate an inode with info from a cifs_fattr struct */ |
118 | void | |
119 | cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) | |
75f12983 | 120 | { |
cc0bad75 | 121 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
0b8f18e3 JL |
122 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
123 | unsigned long oldtime = cifs_i->time; | |
cc0bad75 | 124 | |
df2cf170 JL |
125 | cifs_revalidate_cache(inode, fattr); |
126 | ||
cc0bad75 JL |
127 | inode->i_atime = fattr->cf_atime; |
128 | inode->i_mtime = fattr->cf_mtime; | |
129 | inode->i_ctime = fattr->cf_ctime; | |
cc0bad75 JL |
130 | inode->i_rdev = fattr->cf_rdev; |
131 | inode->i_nlink = fattr->cf_nlink; | |
132 | inode->i_uid = fattr->cf_uid; | |
133 | inode->i_gid = fattr->cf_gid; | |
134 | ||
0b8f18e3 JL |
135 | /* if dynperm is set, don't clobber existing mode */ |
136 | if (inode->i_state & I_NEW || | |
137 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) | |
138 | inode->i_mode = fattr->cf_mode; | |
139 | ||
cc0bad75 | 140 | cifs_i->cifsAttrs = fattr->cf_cifsattrs; |
75f12983 | 141 | |
0b8f18e3 JL |
142 | if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL) |
143 | cifs_i->time = 0; | |
144 | else | |
145 | cifs_i->time = jiffies; | |
146 | ||
b6b38f70 JP |
147 | cFYI(1, "inode 0x%p old_time=%ld new_time=%ld", inode, |
148 | oldtime, cifs_i->time); | |
0b8f18e3 JL |
149 | |
150 | cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING; | |
cc0bad75 | 151 | |
835a36ca | 152 | cifs_i->server_eof = fattr->cf_eof; |
cc0bad75 JL |
153 | /* |
154 | * Can't safely change the file size here if the client is writing to | |
155 | * it due to potential races. | |
156 | */ | |
157 | spin_lock(&inode->i_lock); | |
158 | if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) { | |
159 | i_size_write(inode, fattr->cf_eof); | |
160 | ||
161 | /* | |
162 | * i_blocks is not related to (i_size / i_blksize), | |
163 | * but instead 512 byte (2**9) size is required for | |
164 | * calculating num blocks. | |
165 | */ | |
166 | inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9; | |
167 | } | |
168 | spin_unlock(&inode->i_lock); | |
169 | ||
170 | cifs_set_ops(inode, fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL); | |
171 | } | |
172 | ||
4065c802 JL |
173 | void |
174 | cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr) | |
175 | { | |
176 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
177 | ||
178 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) | |
179 | return; | |
180 | ||
181 | fattr->cf_uniqueid = iunique(sb, ROOT_I); | |
182 | } | |
183 | ||
cc0bad75 JL |
184 | /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */ |
185 | void | |
186 | cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, | |
187 | struct cifs_sb_info *cifs_sb) | |
188 | { | |
189 | memset(fattr, 0, sizeof(*fattr)); | |
190 | fattr->cf_uniqueid = le64_to_cpu(info->UniqueId); | |
191 | fattr->cf_bytes = le64_to_cpu(info->NumOfBytes); | |
192 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
193 | ||
194 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
195 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime); | |
196 | fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange); | |
197 | fattr->cf_mode = le64_to_cpu(info->Permissions); | |
75f12983 CH |
198 | |
199 | /* | |
200 | * Since we set the inode type below we need to mask off | |
201 | * to avoid strange results if bits set above. | |
202 | */ | |
cc0bad75 | 203 | fattr->cf_mode &= ~S_IFMT; |
75f12983 CH |
204 | switch (le32_to_cpu(info->Type)) { |
205 | case UNIX_FILE: | |
cc0bad75 JL |
206 | fattr->cf_mode |= S_IFREG; |
207 | fattr->cf_dtype = DT_REG; | |
75f12983 CH |
208 | break; |
209 | case UNIX_SYMLINK: | |
cc0bad75 JL |
210 | fattr->cf_mode |= S_IFLNK; |
211 | fattr->cf_dtype = DT_LNK; | |
75f12983 CH |
212 | break; |
213 | case UNIX_DIR: | |
cc0bad75 JL |
214 | fattr->cf_mode |= S_IFDIR; |
215 | fattr->cf_dtype = DT_DIR; | |
75f12983 CH |
216 | break; |
217 | case UNIX_CHARDEV: | |
cc0bad75 JL |
218 | fattr->cf_mode |= S_IFCHR; |
219 | fattr->cf_dtype = DT_CHR; | |
220 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), | |
221 | le64_to_cpu(info->DevMinor) & MINORMASK); | |
75f12983 CH |
222 | break; |
223 | case UNIX_BLOCKDEV: | |
cc0bad75 JL |
224 | fattr->cf_mode |= S_IFBLK; |
225 | fattr->cf_dtype = DT_BLK; | |
226 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), | |
227 | le64_to_cpu(info->DevMinor) & MINORMASK); | |
75f12983 CH |
228 | break; |
229 | case UNIX_FIFO: | |
cc0bad75 JL |
230 | fattr->cf_mode |= S_IFIFO; |
231 | fattr->cf_dtype = DT_FIFO; | |
75f12983 CH |
232 | break; |
233 | case UNIX_SOCKET: | |
cc0bad75 JL |
234 | fattr->cf_mode |= S_IFSOCK; |
235 | fattr->cf_dtype = DT_SOCK; | |
75f12983 CH |
236 | break; |
237 | default: | |
238 | /* safest to call it a file if we do not know */ | |
cc0bad75 JL |
239 | fattr->cf_mode |= S_IFREG; |
240 | fattr->cf_dtype = DT_REG; | |
b6b38f70 | 241 | cFYI(1, "unknown type %d", le32_to_cpu(info->Type)); |
75f12983 CH |
242 | break; |
243 | } | |
244 | ||
cc0bad75 JL |
245 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
246 | fattr->cf_uid = cifs_sb->mnt_uid; | |
75f12983 | 247 | else |
cc0bad75 | 248 | fattr->cf_uid = le64_to_cpu(info->Uid); |
75f12983 | 249 | |
cc0bad75 JL |
250 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
251 | fattr->cf_gid = cifs_sb->mnt_gid; | |
75f12983 | 252 | else |
cc0bad75 | 253 | fattr->cf_gid = le64_to_cpu(info->Gid); |
75f12983 | 254 | |
cc0bad75 | 255 | fattr->cf_nlink = le64_to_cpu(info->Nlinks); |
75f12983 CH |
256 | } |
257 | ||
b9a3260f | 258 | /* |
cc0bad75 JL |
259 | * Fill a cifs_fattr struct with fake inode info. |
260 | * | |
261 | * Needed to setup cifs_fattr data for the directory which is the | |
262 | * junction to the new submount (ie to setup the fake directory | |
263 | * which represents a DFS referral). | |
b9a3260f | 264 | */ |
f1230c97 | 265 | static void |
cc0bad75 | 266 | cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) |
0e4bbde9 | 267 | { |
cc0bad75 | 268 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
0e4bbde9 | 269 | |
b6b38f70 | 270 | cFYI(1, "creating fake fattr for DFS referral"); |
cc0bad75 JL |
271 | |
272 | memset(fattr, 0, sizeof(*fattr)); | |
273 | fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU; | |
274 | fattr->cf_uid = cifs_sb->mnt_uid; | |
275 | fattr->cf_gid = cifs_sb->mnt_gid; | |
276 | fattr->cf_atime = CURRENT_TIME; | |
277 | fattr->cf_ctime = CURRENT_TIME; | |
278 | fattr->cf_mtime = CURRENT_TIME; | |
279 | fattr->cf_nlink = 2; | |
280 | fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL; | |
0e4bbde9 SF |
281 | } |
282 | ||
abab095d JL |
283 | int cifs_get_file_info_unix(struct file *filp) |
284 | { | |
285 | int rc; | |
286 | int xid; | |
287 | FILE_UNIX_BASIC_INFO find_data; | |
288 | struct cifs_fattr fattr; | |
289 | struct inode *inode = filp->f_path.dentry->d_inode; | |
290 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
c21dfb69 | 291 | struct cifsFileInfo *cfile = filp->private_data; |
13cfb733 | 292 | struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink); |
abab095d JL |
293 | |
294 | xid = GetXid(); | |
295 | rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data); | |
296 | if (!rc) { | |
297 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); | |
298 | } else if (rc == -EREMOTE) { | |
299 | cifs_create_dfs_fattr(&fattr, inode->i_sb); | |
300 | rc = 0; | |
301 | } | |
302 | ||
303 | cifs_fattr_to_inode(inode, &fattr); | |
304 | FreeXid(xid); | |
305 | return rc; | |
306 | } | |
307 | ||
1da177e4 | 308 | int cifs_get_inode_info_unix(struct inode **pinode, |
cc0bad75 JL |
309 | const unsigned char *full_path, |
310 | struct super_block *sb, int xid) | |
1da177e4 | 311 | { |
cc0bad75 | 312 | int rc; |
0e4bbde9 | 313 | FILE_UNIX_BASIC_INFO find_data; |
cc0bad75 JL |
314 | struct cifs_fattr fattr; |
315 | struct cifsTconInfo *tcon; | |
7ffec372 | 316 | struct tcon_link *tlink; |
1da177e4 | 317 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
1da177e4 | 318 | |
b6b38f70 | 319 | cFYI(1, "Getting info on %s", full_path); |
7962670e | 320 | |
7ffec372 JL |
321 | tlink = cifs_sb_tlink(cifs_sb); |
322 | if (IS_ERR(tlink)) | |
323 | return PTR_ERR(tlink); | |
324 | tcon = tlink_tcon(tlink); | |
325 | ||
1da177e4 | 326 | /* could have done a find first instead but this returns more info */ |
cc0bad75 | 327 | rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data, |
737b758c SF |
328 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
329 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 330 | cifs_put_tlink(tlink); |
e911d0cc | 331 | |
cc0bad75 JL |
332 | if (!rc) { |
333 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); | |
334 | } else if (rc == -EREMOTE) { | |
335 | cifs_create_dfs_fattr(&fattr, sb); | |
336 | rc = 0; | |
337 | } else { | |
338 | return rc; | |
339 | } | |
1da177e4 | 340 | |
1b12b9c1 SM |
341 | /* check for Minshall+French symlinks */ |
342 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { | |
343 | int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); | |
344 | if (tmprc) | |
345 | cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); | |
346 | } | |
347 | ||
0e4bbde9 | 348 | if (*pinode == NULL) { |
cc0bad75 | 349 | /* get new inode */ |
4065c802 | 350 | cifs_fill_uniqueid(sb, &fattr); |
cc0bad75 JL |
351 | *pinode = cifs_iget(sb, &fattr); |
352 | if (!*pinode) | |
0e4bbde9 | 353 | rc = -ENOMEM; |
cc0bad75 JL |
354 | } else { |
355 | /* we already have inode, update it */ | |
356 | cifs_fattr_to_inode(*pinode, &fattr); | |
0e4bbde9 | 357 | } |
1da177e4 | 358 | |
1da177e4 LT |
359 | return rc; |
360 | } | |
361 | ||
0b8f18e3 JL |
362 | static int |
363 | cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, | |
364 | struct cifs_sb_info *cifs_sb, int xid) | |
d6e2f2a4 SF |
365 | { |
366 | int rc; | |
4b18f2a9 | 367 | int oplock = 0; |
d6e2f2a4 | 368 | __u16 netfid; |
7ffec372 JL |
369 | struct tcon_link *tlink; |
370 | struct cifsTconInfo *tcon; | |
86c96b4b | 371 | char buf[24]; |
d6e2f2a4 | 372 | unsigned int bytes_read; |
fb8c4b14 | 373 | char *pbuf; |
d6e2f2a4 SF |
374 | |
375 | pbuf = buf; | |
376 | ||
0b8f18e3 JL |
377 | fattr->cf_mode &= ~S_IFMT; |
378 | ||
379 | if (fattr->cf_eof == 0) { | |
380 | fattr->cf_mode |= S_IFIFO; | |
381 | fattr->cf_dtype = DT_FIFO; | |
d6e2f2a4 | 382 | return 0; |
0b8f18e3 JL |
383 | } else if (fattr->cf_eof < 8) { |
384 | fattr->cf_mode |= S_IFREG; | |
385 | fattr->cf_dtype = DT_REG; | |
d6e2f2a4 SF |
386 | return -EINVAL; /* EOPNOTSUPP? */ |
387 | } | |
50c2f753 | 388 | |
7ffec372 JL |
389 | tlink = cifs_sb_tlink(cifs_sb); |
390 | if (IS_ERR(tlink)) | |
391 | return PTR_ERR(tlink); | |
392 | tcon = tlink_tcon(tlink); | |
393 | ||
394 | rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ, | |
d6e2f2a4 SF |
395 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
396 | cifs_sb->local_nls, | |
397 | cifs_sb->mnt_cifs_flags & | |
398 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
fb8c4b14 | 399 | if (rc == 0) { |
ec637e3f | 400 | int buf_type = CIFS_NO_BUFFER; |
d6e2f2a4 | 401 | /* Read header */ |
7ffec372 | 402 | rc = CIFSSMBRead(xid, tcon, netfid, |
86c96b4b | 403 | 24 /* length */, 0 /* offset */, |
ec637e3f | 404 | &bytes_read, &pbuf, &buf_type); |
4523cc30 SF |
405 | if ((rc == 0) && (bytes_read >= 8)) { |
406 | if (memcmp("IntxBLK", pbuf, 8) == 0) { | |
b6b38f70 | 407 | cFYI(1, "Block device"); |
0b8f18e3 JL |
408 | fattr->cf_mode |= S_IFBLK; |
409 | fattr->cf_dtype = DT_BLK; | |
4523cc30 | 410 | if (bytes_read == 24) { |
86c96b4b SF |
411 | /* we have enough to decode dev num */ |
412 | __u64 mjr; /* major */ | |
413 | __u64 mnr; /* minor */ | |
414 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); | |
415 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); | |
0b8f18e3 | 416 | fattr->cf_rdev = MKDEV(mjr, mnr); |
86c96b4b | 417 | } |
4523cc30 | 418 | } else if (memcmp("IntxCHR", pbuf, 8) == 0) { |
b6b38f70 | 419 | cFYI(1, "Char device"); |
0b8f18e3 JL |
420 | fattr->cf_mode |= S_IFCHR; |
421 | fattr->cf_dtype = DT_CHR; | |
4523cc30 | 422 | if (bytes_read == 24) { |
86c96b4b SF |
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)); | |
0b8f18e3 | 428 | fattr->cf_rdev = MKDEV(mjr, mnr); |
fb8c4b14 | 429 | } |
4523cc30 | 430 | } else if (memcmp("IntxLNK", pbuf, 7) == 0) { |
b6b38f70 | 431 | cFYI(1, "Symlink"); |
0b8f18e3 JL |
432 | fattr->cf_mode |= S_IFLNK; |
433 | fattr->cf_dtype = DT_LNK; | |
86c96b4b | 434 | } else { |
0b8f18e3 JL |
435 | fattr->cf_mode |= S_IFREG; /* file? */ |
436 | fattr->cf_dtype = DT_REG; | |
fb8c4b14 | 437 | rc = -EOPNOTSUPP; |
86c96b4b | 438 | } |
3020a1f5 | 439 | } else { |
0b8f18e3 JL |
440 | fattr->cf_mode |= S_IFREG; /* then it is a file */ |
441 | fattr->cf_dtype = DT_REG; | |
fb8c4b14 SF |
442 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
443 | } | |
7ffec372 | 444 | CIFSSMBClose(xid, tcon, netfid); |
d6e2f2a4 | 445 | } |
7ffec372 | 446 | cifs_put_tlink(tlink); |
d6e2f2a4 | 447 | return rc; |
d6e2f2a4 SF |
448 | } |
449 | ||
9e294f1c SF |
450 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
451 | ||
0b8f18e3 JL |
452 | /* |
453 | * Fetch mode bits as provided by SFU. | |
454 | * | |
455 | * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ? | |
456 | */ | |
457 | static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, | |
458 | struct cifs_sb_info *cifs_sb, int xid) | |
9e294f1c | 459 | { |
3020a1f5 | 460 | #ifdef CONFIG_CIFS_XATTR |
9e294f1c SF |
461 | ssize_t rc; |
462 | char ea_value[4]; | |
463 | __u32 mode; | |
7ffec372 JL |
464 | struct tcon_link *tlink; |
465 | struct cifsTconInfo *tcon; | |
466 | ||
467 | tlink = cifs_sb_tlink(cifs_sb); | |
468 | if (IS_ERR(tlink)) | |
469 | return PTR_ERR(tlink); | |
470 | tcon = tlink_tcon(tlink); | |
9e294f1c | 471 | |
7ffec372 | 472 | rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS", |
0b8f18e3 JL |
473 | ea_value, 4 /* size of buf */, cifs_sb->local_nls, |
474 | cifs_sb->mnt_cifs_flags & | |
475 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 476 | cifs_put_tlink(tlink); |
4523cc30 | 477 | if (rc < 0) |
9e294f1c SF |
478 | return (int)rc; |
479 | else if (rc > 3) { | |
480 | mode = le32_to_cpu(*((__le32 *)ea_value)); | |
0b8f18e3 | 481 | fattr->cf_mode &= ~SFBITS_MASK; |
b6b38f70 JP |
482 | cFYI(1, "special bits 0%o org mode 0%o", mode, |
483 | fattr->cf_mode); | |
0b8f18e3 | 484 | fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode; |
b6b38f70 | 485 | cFYI(1, "special mode bits 0%o", mode); |
9e294f1c | 486 | } |
0b8f18e3 JL |
487 | |
488 | return 0; | |
3020a1f5 SF |
489 | #else |
490 | return -EOPNOTSUPP; | |
491 | #endif | |
9e294f1c SF |
492 | } |
493 | ||
0b8f18e3 | 494 | /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */ |
f1230c97 | 495 | static void |
0b8f18e3 JL |
496 | cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, |
497 | struct cifs_sb_info *cifs_sb, bool adjust_tz) | |
b9a3260f | 498 | { |
0d424ad0 JL |
499 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
500 | ||
0b8f18e3 JL |
501 | memset(fattr, 0, sizeof(*fattr)); |
502 | fattr->cf_cifsattrs = le32_to_cpu(info->Attributes); | |
503 | if (info->DeletePending) | |
504 | fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING; | |
505 | ||
506 | if (info->LastAccessTime) | |
507 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
508 | else | |
509 | fattr->cf_atime = CURRENT_TIME; | |
510 | ||
511 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); | |
512 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); | |
513 | ||
514 | if (adjust_tz) { | |
0d424ad0 JL |
515 | fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; |
516 | fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; | |
0b8f18e3 JL |
517 | } |
518 | ||
519 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
520 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); | |
20054bd6 | 521 | fattr->cf_createtime = le64_to_cpu(info->CreationTime); |
0b8f18e3 JL |
522 | |
523 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { | |
524 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; | |
525 | fattr->cf_dtype = DT_DIR; | |
526 | } else { | |
527 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; | |
528 | fattr->cf_dtype = DT_REG; | |
0b8f18e3 | 529 | |
d0c280d2 JL |
530 | /* clear write bits if ATTR_READONLY is set */ |
531 | if (fattr->cf_cifsattrs & ATTR_READONLY) | |
532 | fattr->cf_mode &= ~(S_IWUGO); | |
533 | } | |
0b8f18e3 JL |
534 | |
535 | fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); | |
536 | ||
537 | fattr->cf_uid = cifs_sb->mnt_uid; | |
538 | fattr->cf_gid = cifs_sb->mnt_gid; | |
b9a3260f SF |
539 | } |
540 | ||
abab095d JL |
541 | int cifs_get_file_info(struct file *filp) |
542 | { | |
543 | int rc; | |
544 | int xid; | |
545 | FILE_ALL_INFO find_data; | |
546 | struct cifs_fattr fattr; | |
547 | struct inode *inode = filp->f_path.dentry->d_inode; | |
548 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
c21dfb69 | 549 | struct cifsFileInfo *cfile = filp->private_data; |
13cfb733 | 550 | struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink); |
abab095d JL |
551 | |
552 | xid = GetXid(); | |
553 | rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data); | |
554 | if (rc == -EOPNOTSUPP || rc == -EINVAL) { | |
555 | /* | |
556 | * FIXME: legacy server -- fall back to path-based call? | |
ff215713 SF |
557 | * for now, just skip revalidating and mark inode for |
558 | * immediate reval. | |
559 | */ | |
abab095d JL |
560 | rc = 0; |
561 | CIFS_I(inode)->time = 0; | |
562 | goto cgfi_exit; | |
563 | } else if (rc == -EREMOTE) { | |
564 | cifs_create_dfs_fattr(&fattr, inode->i_sb); | |
565 | rc = 0; | |
566 | } else if (rc) | |
567 | goto cgfi_exit; | |
568 | ||
569 | /* | |
570 | * don't bother with SFU junk here -- just mark inode as needing | |
571 | * revalidation. | |
572 | */ | |
573 | cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false); | |
574 | fattr.cf_uniqueid = CIFS_I(inode)->uniqueid; | |
575 | fattr.cf_flags |= CIFS_FATTR_NEED_REVAL; | |
576 | cifs_fattr_to_inode(inode, &fattr); | |
577 | cgfi_exit: | |
578 | FreeXid(xid); | |
579 | return rc; | |
580 | } | |
581 | ||
1da177e4 | 582 | int cifs_get_inode_info(struct inode **pinode, |
646dd539 | 583 | const unsigned char *full_path, FILE_ALL_INFO *pfindData, |
8b1327f6 | 584 | struct super_block *sb, int xid, const __u16 *pfid) |
1da177e4 | 585 | { |
0b8f18e3 | 586 | int rc = 0, tmprc; |
1da177e4 | 587 | struct cifsTconInfo *pTcon; |
7ffec372 | 588 | struct tcon_link *tlink; |
1da177e4 | 589 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
1da177e4 | 590 | char *buf = NULL; |
5ade9dea | 591 | bool adjustTZ = false; |
0b8f18e3 | 592 | struct cifs_fattr fattr; |
1da177e4 | 593 | |
7ffec372 JL |
594 | tlink = cifs_sb_tlink(cifs_sb); |
595 | if (IS_ERR(tlink)) | |
596 | return PTR_ERR(tlink); | |
597 | pTcon = tlink_tcon(tlink); | |
598 | ||
b6b38f70 | 599 | cFYI(1, "Getting info on %s", full_path); |
1da177e4 | 600 | |
d0d2f2df SF |
601 | if ((pfindData == NULL) && (*pinode != NULL)) { |
602 | if (CIFS_I(*pinode)->clientCanCacheRead) { | |
b6b38f70 | 603 | cFYI(1, "No need to revalidate cached inode sizes"); |
7ffec372 | 604 | goto cgii_exit; |
1da177e4 LT |
605 | } |
606 | } | |
607 | ||
608 | /* if file info not passed in then get it from server */ | |
d0d2f2df | 609 | if (pfindData == NULL) { |
1da177e4 | 610 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
7ffec372 JL |
611 | if (buf == NULL) { |
612 | rc = -ENOMEM; | |
613 | goto cgii_exit; | |
614 | } | |
1da177e4 | 615 | pfindData = (FILE_ALL_INFO *)buf; |
7962670e | 616 | |
1da177e4 | 617 | /* could do find first instead but this returns more info */ |
7962670e | 618 | rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, |
acf1a1b1 | 619 | 0 /* not legacy */, |
6b8edfe0 | 620 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
737b758c | 621 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
6b8edfe0 SF |
622 | /* BB optimize code so we do not make the above call |
623 | when server claims no NT SMB support and the above call | |
624 | failed at least once - set flag in tcon or mount */ | |
4523cc30 | 625 | if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
7962670e | 626 | rc = SMBQueryInformation(xid, pTcon, full_path, |
fb8c4b14 | 627 | pfindData, cifs_sb->local_nls, |
6b8edfe0 SF |
628 | cifs_sb->mnt_cifs_flags & |
629 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
4b18f2a9 | 630 | adjustTZ = true; |
6b8edfe0 | 631 | } |
1da177e4 | 632 | } |
0b8f18e3 JL |
633 | |
634 | if (!rc) { | |
635 | cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *) pfindData, | |
636 | cifs_sb, adjustTZ); | |
637 | } else if (rc == -EREMOTE) { | |
638 | cifs_create_dfs_fattr(&fattr, sb); | |
b9a3260f | 639 | rc = 0; |
0b8f18e3 | 640 | } else { |
7962670e | 641 | goto cgii_exit; |
0b8f18e3 | 642 | } |
1da177e4 | 643 | |
0b8f18e3 JL |
644 | /* |
645 | * If an inode wasn't passed in, then get the inode number | |
646 | * | |
647 | * Is an i_ino of zero legal? Can we use that to check if the server | |
648 | * supports returning inode numbers? Are there other sanity checks we | |
649 | * can use to ensure that the server is really filling in that field? | |
650 | * | |
651 | * We can not use the IndexNumber field by default from Windows or | |
652 | * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA | |
653 | * CIFS spec claims that this value is unique within the scope of a | |
654 | * share, and the windows docs hint that it's actually unique | |
655 | * per-machine. | |
656 | * | |
657 | * There may be higher info levels that work but are there Windows | |
658 | * server or network appliances for which IndexNumber field is not | |
659 | * guaranteed unique? | |
660 | */ | |
b9a3260f | 661 | if (*pinode == NULL) { |
b9a3260f SF |
662 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
663 | int rc1 = 0; | |
b9a3260f SF |
664 | |
665 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, | |
0b8f18e3 | 666 | full_path, &fattr.cf_uniqueid, |
737b758c SF |
667 | cifs_sb->local_nls, |
668 | cifs_sb->mnt_cifs_flags & | |
669 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
ec06aedd | 670 | if (rc1 || !fattr.cf_uniqueid) { |
b6b38f70 | 671 | cFYI(1, "GetSrvInodeNum rc %d", rc1); |
0b8f18e3 | 672 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
ec06aedd | 673 | cifs_autodisable_serverino(cifs_sb); |
132ac7b7 | 674 | } |
132ac7b7 | 675 | } else { |
0b8f18e3 | 676 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
132ac7b7 | 677 | } |
b9a3260f | 678 | } else { |
0b8f18e3 | 679 | fattr.cf_uniqueid = CIFS_I(*pinode)->uniqueid; |
b9a3260f SF |
680 | } |
681 | ||
0b8f18e3 JL |
682 | /* query for SFU type info if supported and needed */ |
683 | if (fattr.cf_cifsattrs & ATTR_SYSTEM && | |
684 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { | |
685 | tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); | |
686 | if (tmprc) | |
b6b38f70 | 687 | cFYI(1, "cifs_sfu_type failed: %d", tmprc); |
b9a3260f | 688 | } |
1da177e4 | 689 | |
79df1bae | 690 | #ifdef CONFIG_CIFS_ACL |
b9a3260f SF |
691 | /* fill in 0777 bits from ACL */ |
692 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { | |
78415d2d SP |
693 | rc = cifs_acl_to_fattr(cifs_sb, &fattr, *pinode, full_path, |
694 | pfid); | |
695 | if (rc) { | |
696 | cFYI(1, "%s: Getting ACL failed with error: %d", | |
697 | __func__, rc); | |
698 | goto cgii_exit; | |
699 | } | |
b9a3260f | 700 | } |
79df1bae | 701 | #endif /* CONFIG_CIFS_ACL */ |
b9a3260f | 702 | |
0b8f18e3 JL |
703 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
704 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) | |
705 | cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); | |
b9a3260f | 706 | |
1b12b9c1 SM |
707 | /* check for Minshall+French symlinks */ |
708 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { | |
709 | tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); | |
710 | if (tmprc) | |
711 | cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); | |
712 | } | |
713 | ||
0b8f18e3 JL |
714 | if (!*pinode) { |
715 | *pinode = cifs_iget(sb, &fattr); | |
716 | if (!*pinode) | |
717 | rc = -ENOMEM; | |
718 | } else { | |
719 | cifs_fattr_to_inode(*pinode, &fattr); | |
720 | } | |
b9a3260f | 721 | |
7962670e | 722 | cgii_exit: |
1da177e4 | 723 | kfree(buf); |
7ffec372 | 724 | cifs_put_tlink(tlink); |
1da177e4 LT |
725 | return rc; |
726 | } | |
727 | ||
7f8ed420 SF |
728 | static const struct inode_operations cifs_ipc_inode_ops = { |
729 | .lookup = cifs_lookup, | |
730 | }; | |
731 | ||
7d161b7f JL |
732 | char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb, |
733 | struct cifsTconInfo *tcon) | |
8be0ed44 SF |
734 | { |
735 | int pplen = cifs_sb->prepathlen; | |
736 | int dfsplen; | |
737 | char *full_path = NULL; | |
738 | ||
739 | /* if no prefix path, simply set path to the root of share to "" */ | |
740 | if (pplen == 0) { | |
741 | full_path = kmalloc(1, GFP_KERNEL); | |
742 | if (full_path) | |
743 | full_path[0] = 0; | |
744 | return full_path; | |
745 | } | |
746 | ||
0d424ad0 JL |
747 | if (tcon->Flags & SMB_SHARE_IS_IN_DFS) |
748 | dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); | |
8be0ed44 SF |
749 | else |
750 | dfsplen = 0; | |
751 | ||
752 | full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL); | |
753 | if (full_path == NULL) | |
754 | return full_path; | |
755 | ||
756 | if (dfsplen) { | |
0d424ad0 | 757 | strncpy(full_path, tcon->treeName, dfsplen); |
8be0ed44 SF |
758 | /* switch slash direction in prepath depending on whether |
759 | * windows or posix style path names | |
760 | */ | |
761 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { | |
762 | int i; | |
763 | for (i = 0; i < dfsplen; i++) { | |
764 | if (full_path[i] == '\\') | |
765 | full_path[i] = '/'; | |
766 | } | |
767 | } | |
768 | } | |
769 | strncpy(full_path + dfsplen, cifs_sb->prepath, pplen); | |
770 | full_path[dfsplen + pplen] = 0; /* add trailing null */ | |
771 | return full_path; | |
772 | } | |
773 | ||
cc0bad75 JL |
774 | static int |
775 | cifs_find_inode(struct inode *inode, void *opaque) | |
776 | { | |
777 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; | |
778 | ||
f30b9c11 | 779 | /* don't match inode with different uniqueid */ |
cc0bad75 JL |
780 | if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid) |
781 | return 0; | |
782 | ||
20054bd6 JL |
783 | /* use createtime like an i_generation field */ |
784 | if (CIFS_I(inode)->createtime != fattr->cf_createtime) | |
785 | return 0; | |
786 | ||
f30b9c11 JL |
787 | /* don't match inode of different type */ |
788 | if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT)) | |
789 | return 0; | |
790 | ||
5acfec25 JL |
791 | /* if it's not a directory or has no dentries, then flag it */ |
792 | if (S_ISDIR(inode->i_mode) && !list_empty(&inode->i_dentry)) | |
3d694380 | 793 | fattr->cf_flags |= CIFS_FATTR_INO_COLLISION; |
3d694380 | 794 | |
cc0bad75 JL |
795 | return 1; |
796 | } | |
797 | ||
798 | static int | |
799 | cifs_init_inode(struct inode *inode, void *opaque) | |
800 | { | |
801 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; | |
802 | ||
803 | CIFS_I(inode)->uniqueid = fattr->cf_uniqueid; | |
20054bd6 | 804 | CIFS_I(inode)->createtime = fattr->cf_createtime; |
cc0bad75 JL |
805 | return 0; |
806 | } | |
807 | ||
5acfec25 JL |
808 | /* |
809 | * walk dentry list for an inode and report whether it has aliases that | |
810 | * are hashed. We use this to determine if a directory inode can actually | |
811 | * be used. | |
812 | */ | |
813 | static bool | |
814 | inode_has_hashed_dentries(struct inode *inode) | |
815 | { | |
816 | struct dentry *dentry; | |
817 | ||
873feea0 | 818 | spin_lock(&inode->i_lock); |
5acfec25 JL |
819 | list_for_each_entry(dentry, &inode->i_dentry, d_alias) { |
820 | if (!d_unhashed(dentry) || IS_ROOT(dentry)) { | |
873feea0 | 821 | spin_unlock(&inode->i_lock); |
5acfec25 JL |
822 | return true; |
823 | } | |
824 | } | |
873feea0 | 825 | spin_unlock(&inode->i_lock); |
5acfec25 JL |
826 | return false; |
827 | } | |
828 | ||
cc0bad75 JL |
829 | /* Given fattrs, get a corresponding inode */ |
830 | struct inode * | |
831 | cifs_iget(struct super_block *sb, struct cifs_fattr *fattr) | |
832 | { | |
833 | unsigned long hash; | |
834 | struct inode *inode; | |
835 | ||
3d694380 | 836 | retry_iget5_locked: |
b6b38f70 | 837 | cFYI(1, "looking for uniqueid=%llu", fattr->cf_uniqueid); |
cc0bad75 JL |
838 | |
839 | /* hash down to 32-bits on 32-bit arch */ | |
840 | hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid); | |
841 | ||
842 | inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr); | |
cc0bad75 | 843 | if (inode) { |
5acfec25 | 844 | /* was there a potentially problematic inode collision? */ |
3d694380 | 845 | if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) { |
3d694380 | 846 | fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION; |
5acfec25 JL |
847 | |
848 | if (inode_has_hashed_dentries(inode)) { | |
849 | cifs_autodisable_serverino(CIFS_SB(sb)); | |
850 | iput(inode); | |
851 | fattr->cf_uniqueid = iunique(sb, ROOT_I); | |
852 | goto retry_iget5_locked; | |
853 | } | |
3d694380 JL |
854 | } |
855 | ||
cc0bad75 JL |
856 | cifs_fattr_to_inode(inode, fattr); |
857 | if (sb->s_flags & MS_NOATIME) | |
858 | inode->i_flags |= S_NOATIME | S_NOCMTIME; | |
859 | if (inode->i_state & I_NEW) { | |
860 | inode->i_ino = hash; | |
522440ed JL |
861 | if (S_ISREG(inode->i_mode)) |
862 | inode->i_data.backing_dev_info = sb->s_bdi; | |
0ccd4802 | 863 | #ifdef CONFIG_CIFS_FSCACHE |
9451a9a5 SJ |
864 | /* initialize per-inode cache cookie pointer */ |
865 | CIFS_I(inode)->fscache = NULL; | |
0ccd4802 | 866 | #endif |
cc0bad75 JL |
867 | unlock_new_inode(inode); |
868 | } | |
869 | } | |
870 | ||
871 | return inode; | |
872 | } | |
873 | ||
1da177e4 | 874 | /* gets root inode */ |
bd433d4c | 875 | struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino) |
1da177e4 | 876 | { |
ce634ab2 | 877 | int xid; |
0d424ad0 | 878 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
cc0bad75 | 879 | struct inode *inode = NULL; |
ce634ab2 | 880 | long rc; |
8be0ed44 | 881 | char *full_path; |
0d424ad0 | 882 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
ce634ab2 | 883 | |
7d161b7f | 884 | full_path = cifs_build_path_to_root(cifs_sb, tcon); |
8be0ed44 SF |
885 | if (full_path == NULL) |
886 | return ERR_PTR(-ENOMEM); | |
c18c842b | 887 | |
8be0ed44 | 888 | xid = GetXid(); |
0d424ad0 | 889 | if (tcon->unix_ext) |
cc0bad75 | 890 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
0b8f18e3 JL |
891 | else |
892 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, | |
8be0ed44 | 893 | xid, NULL); |
0b8f18e3 | 894 | |
a7851ce7 OS |
895 | if (!inode) { |
896 | inode = ERR_PTR(rc); | |
897 | goto out; | |
898 | } | |
cc0bad75 | 899 | |
0ccd4802 | 900 | #ifdef CONFIG_CIFS_FSCACHE |
d03382ce | 901 | /* populate tcon->resource_id */ |
0d424ad0 | 902 | tcon->resource_id = CIFS_I(inode)->uniqueid; |
0ccd4802 | 903 | #endif |
d03382ce | 904 | |
0d424ad0 | 905 | if (rc && tcon->ipc) { |
b6b38f70 | 906 | cFYI(1, "ipc connection - fake read inode"); |
7f8ed420 SF |
907 | inode->i_mode |= S_IFDIR; |
908 | inode->i_nlink = 2; | |
909 | inode->i_op = &cifs_ipc_inode_ops; | |
910 | inode->i_fop = &simple_dir_operations; | |
911 | inode->i_uid = cifs_sb->mnt_uid; | |
912 | inode->i_gid = cifs_sb->mnt_gid; | |
ad661334 | 913 | } else if (rc) { |
ce634ab2 | 914 | iget_failed(inode); |
a7851ce7 | 915 | inode = ERR_PTR(rc); |
7f8ed420 SF |
916 | } |
917 | ||
a7851ce7 | 918 | out: |
8be0ed44 | 919 | kfree(full_path); |
ce634ab2 DH |
920 | /* can not call macro FreeXid here since in a void func |
921 | * TODO: This is no longer true | |
922 | */ | |
1da177e4 | 923 | _FreeXid(xid); |
ce634ab2 | 924 | return inode; |
1da177e4 LT |
925 | } |
926 | ||
388e57b2 SF |
927 | static int |
928 | cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid, | |
929 | char *full_path, __u32 dosattr) | |
930 | { | |
931 | int rc; | |
932 | int oplock = 0; | |
933 | __u16 netfid; | |
934 | __u32 netpid; | |
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); | |
7ffec372 | 939 | struct tcon_link *tlink = NULL; |
ba00ba64 | 940 | struct cifsTconInfo *pTcon; |
388e57b2 SF |
941 | FILE_BASIC_INFO info_buf; |
942 | ||
1adcb710 SF |
943 | if (attrs == NULL) |
944 | return -EINVAL; | |
945 | ||
388e57b2 SF |
946 | if (attrs->ia_valid & ATTR_ATIME) { |
947 | set_time = true; | |
948 | info_buf.LastAccessTime = | |
949 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); | |
950 | } else | |
951 | info_buf.LastAccessTime = 0; | |
952 | ||
953 | if (attrs->ia_valid & ATTR_MTIME) { | |
954 | set_time = true; | |
955 | info_buf.LastWriteTime = | |
956 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); | |
957 | } else | |
958 | info_buf.LastWriteTime = 0; | |
959 | ||
960 | /* | |
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 | |
964 | * server times. | |
965 | */ | |
966 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { | |
b6b38f70 | 967 | cFYI(1, "CIFS - CTIME changed"); |
388e57b2 SF |
968 | info_buf.ChangeTime = |
969 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); | |
970 | } else | |
971 | info_buf.ChangeTime = 0; | |
972 | ||
973 | info_buf.CreationTime = 0; /* don't change */ | |
974 | info_buf.Attributes = cpu_to_le32(dosattr); | |
975 | ||
976 | /* | |
977 | * If the file is already open for write, just use that fileid | |
978 | */ | |
6508d904 | 979 | open_file = find_writable_file(cifsInode, true); |
388e57b2 SF |
980 | if (open_file) { |
981 | netfid = open_file->netfid; | |
982 | netpid = open_file->pid; | |
13cfb733 | 983 | pTcon = tlink_tcon(open_file->tlink); |
388e57b2 SF |
984 | goto set_via_filehandle; |
985 | } | |
986 | ||
7ffec372 JL |
987 | tlink = cifs_sb_tlink(cifs_sb); |
988 | if (IS_ERR(tlink)) { | |
989 | rc = PTR_ERR(tlink); | |
990 | tlink = NULL; | |
991 | goto out; | |
992 | } | |
993 | pTcon = tlink_tcon(tlink); | |
ba00ba64 | 994 | |
388e57b2 SF |
995 | /* |
996 | * NT4 apparently returns success on this call, but it doesn't | |
997 | * really work. | |
998 | */ | |
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); | |
6b37faa1 JL |
1004 | if (rc == 0) { |
1005 | cifsInode->cifsAttrs = dosattr; | |
1006 | goto out; | |
1007 | } else if (rc != -EOPNOTSUPP && rc != -EINVAL) | |
388e57b2 SF |
1008 | goto out; |
1009 | } | |
1010 | ||
b6b38f70 JP |
1011 | cFYI(1, "calling SetFileInfo since SetPathInfo for " |
1012 | "times not supported by this server"); | |
388e57b2 SF |
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); | |
1019 | ||
1020 | if (rc != 0) { | |
1021 | if (rc == -EIO) | |
1022 | rc = -EINVAL; | |
1023 | goto out; | |
1024 | } | |
1025 | ||
1026 | netpid = current->tgid; | |
1027 | ||
1028 | set_via_filehandle: | |
1029 | rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid); | |
d388908e SF |
1030 | if (!rc) |
1031 | cifsInode->cifsAttrs = dosattr; | |
1032 | ||
388e57b2 SF |
1033 | if (open_file == NULL) |
1034 | CIFSSMBClose(xid, pTcon, netfid); | |
1035 | else | |
6ab409b5 | 1036 | cifsFileInfo_put(open_file); |
388e57b2 | 1037 | out: |
7ffec372 JL |
1038 | if (tlink != NULL) |
1039 | cifs_put_tlink(tlink); | |
388e57b2 SF |
1040 | return rc; |
1041 | } | |
1042 | ||
a12a1ac7 JL |
1043 | /* |
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 | |
1046 | * anything else. | |
1047 | */ | |
1048 | static int | |
3270958b | 1049 | cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid) |
a12a1ac7 JL |
1050 | { |
1051 | int oplock = 0; | |
1052 | int rc; | |
1053 | __u16 netfid; | |
3270958b | 1054 | struct inode *inode = dentry->d_inode; |
a12a1ac7 JL |
1055 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
1056 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 JL |
1057 | struct tcon_link *tlink; |
1058 | struct cifsTconInfo *tcon; | |
3270958b SF |
1059 | __u32 dosattr, origattr; |
1060 | FILE_BASIC_INFO *info_buf = NULL; | |
a12a1ac7 | 1061 | |
7ffec372 JL |
1062 | tlink = cifs_sb_tlink(cifs_sb); |
1063 | if (IS_ERR(tlink)) | |
1064 | return PTR_ERR(tlink); | |
1065 | tcon = tlink_tcon(tlink); | |
1066 | ||
a12a1ac7 | 1067 | rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, |
dd1db2de | 1068 | DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, |
a12a1ac7 JL |
1069 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
1070 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1071 | if (rc != 0) | |
1072 | goto out; | |
1073 | ||
3270958b SF |
1074 | origattr = cifsInode->cifsAttrs; |
1075 | if (origattr == 0) | |
1076 | origattr |= ATTR_NORMAL; | |
1077 | ||
1078 | dosattr = origattr & ~ATTR_READONLY; | |
a12a1ac7 JL |
1079 | if (dosattr == 0) |
1080 | dosattr |= ATTR_NORMAL; | |
1081 | dosattr |= ATTR_HIDDEN; | |
1082 | ||
3270958b SF |
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) { | |
1087 | rc = -ENOMEM; | |
1088 | goto out_close; | |
1089 | } | |
1090 | info_buf->Attributes = cpu_to_le32(dosattr); | |
1091 | rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, | |
1092 | current->tgid); | |
1093 | /* although we would like to mark the file hidden | |
1094 | if that fails we will still try to rename it */ | |
41346098 | 1095 | if (rc != 0) |
3270958b SF |
1096 | cifsInode->cifsAttrs = dosattr; |
1097 | else | |
1098 | dosattr = origattr; /* since not able to change them */ | |
a12a1ac7 | 1099 | } |
a12a1ac7 | 1100 | |
dd1db2de JL |
1101 | /* rename the file */ |
1102 | rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls, | |
a12a1ac7 JL |
1103 | cifs_sb->mnt_cifs_flags & |
1104 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
3270958b SF |
1105 | if (rc != 0) { |
1106 | rc = -ETXTBSY; | |
1107 | goto undo_setattr; | |
1108 | } | |
6d22f098 | 1109 | |
3270958b SF |
1110 | /* try to set DELETE_ON_CLOSE */ |
1111 | if (!cifsInode->delete_pending) { | |
1112 | rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, | |
1113 | current->tgid); | |
1114 | /* | |
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. | |
1119 | * | |
1120 | * BB: remove this hack after more servers have the fix | |
1121 | */ | |
1122 | if (rc == -ENOENT) | |
1123 | rc = 0; | |
1124 | else if (rc != 0) { | |
1125 | rc = -ETXTBSY; | |
1126 | goto undo_rename; | |
1127 | } | |
1128 | cifsInode->delete_pending = true; | |
1129 | } | |
7ce86d5a | 1130 | |
a12a1ac7 JL |
1131 | out_close: |
1132 | CIFSSMBClose(xid, tcon, netfid); | |
1133 | out: | |
3270958b | 1134 | kfree(info_buf); |
7ffec372 | 1135 | cifs_put_tlink(tlink); |
a12a1ac7 | 1136 | return rc; |
3270958b SF |
1137 | |
1138 | /* | |
1139 | * reset everything back to the original state. Don't bother | |
1140 | * dealing with errors here since we can't do anything about | |
1141 | * them anyway. | |
1142 | */ | |
1143 | undo_rename: | |
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); | |
1147 | undo_setattr: | |
1148 | if (dosattr != origattr) { | |
1149 | info_buf->Attributes = cpu_to_le32(origattr); | |
1150 | if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, | |
1151 | current->tgid)) | |
1152 | cifsInode->cifsAttrs = origattr; | |
1153 | } | |
1154 | ||
1155 | goto out_close; | |
a12a1ac7 JL |
1156 | } |
1157 | ||
ff694527 SF |
1158 | |
1159 | /* | |
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 | |
af901ca1 AGR |
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 | |
ff694527 SF |
1164 | * unlink on negative dentries currently. |
1165 | */ | |
5f0319a7 | 1166 | int cifs_unlink(struct inode *dir, struct dentry *dentry) |
1da177e4 LT |
1167 | { |
1168 | int rc = 0; | |
1169 | int xid; | |
1da177e4 | 1170 | char *full_path = NULL; |
5f0319a7 | 1171 | struct inode *inode = dentry->d_inode; |
ff694527 | 1172 | struct cifsInodeInfo *cifs_inode; |
5f0319a7 JL |
1173 | struct super_block *sb = dir->i_sb; |
1174 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
7ffec372 JL |
1175 | struct tcon_link *tlink; |
1176 | struct cifsTconInfo *tcon; | |
6050247d SF |
1177 | struct iattr *attrs = NULL; |
1178 | __u32 dosattr = 0, origattr = 0; | |
1da177e4 | 1179 | |
b6b38f70 | 1180 | cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry); |
1da177e4 | 1181 | |
7ffec372 JL |
1182 | tlink = cifs_sb_tlink(cifs_sb); |
1183 | if (IS_ERR(tlink)) | |
1184 | return PTR_ERR(tlink); | |
1185 | tcon = tlink_tcon(tlink); | |
1186 | ||
1da177e4 LT |
1187 | xid = GetXid(); |
1188 | ||
5f0319a7 JL |
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); | |
1da177e4 | 1192 | if (full_path == NULL) { |
0f3bc09e | 1193 | rc = -ENOMEM; |
7ffec372 | 1194 | goto unlink_out; |
1da177e4 | 1195 | } |
2d785a50 | 1196 | |
5f0319a7 | 1197 | if ((tcon->ses->capabilities & CAP_UNIX) && |
2d785a50 | 1198 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
5f0319a7 JL |
1199 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { |
1200 | rc = CIFSPOSIXDelFile(xid, tcon, full_path, | |
2d785a50 | 1201 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
737b758c | 1202 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
b6b38f70 | 1203 | cFYI(1, "posix del rc %d", rc); |
2d785a50 SF |
1204 | if ((rc == 0) || (rc == -ENOENT)) |
1205 | goto psx_del_no_retry; | |
1206 | } | |
1da177e4 | 1207 | |
6050247d | 1208 | retry_std_delete: |
5f0319a7 | 1209 | rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls, |
2d785a50 | 1210 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
6050247d | 1211 | |
2d785a50 | 1212 | psx_del_no_retry: |
1da177e4 | 1213 | if (!rc) { |
5f0319a7 JL |
1214 | if (inode) |
1215 | drop_nlink(inode); | |
1da177e4 | 1216 | } else if (rc == -ENOENT) { |
5f0319a7 | 1217 | d_drop(dentry); |
1da177e4 | 1218 | } else if (rc == -ETXTBSY) { |
3270958b | 1219 | rc = cifs_rename_pending_delete(full_path, dentry, xid); |
a12a1ac7 JL |
1220 | if (rc == 0) |
1221 | drop_nlink(inode); | |
ff694527 | 1222 | } else if ((rc == -EACCES) && (dosattr == 0) && inode) { |
388e57b2 SF |
1223 | attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); |
1224 | if (attrs == NULL) { | |
1225 | rc = -ENOMEM; | |
1226 | goto out_reval; | |
1da177e4 | 1227 | } |
388e57b2 SF |
1228 | |
1229 | /* try to reset dos attributes */ | |
ff694527 SF |
1230 | cifs_inode = CIFS_I(inode); |
1231 | origattr = cifs_inode->cifsAttrs; | |
6050247d SF |
1232 | if (origattr == 0) |
1233 | origattr |= ATTR_NORMAL; | |
1234 | dosattr = origattr & ~ATTR_READONLY; | |
388e57b2 SF |
1235 | if (dosattr == 0) |
1236 | dosattr |= ATTR_NORMAL; | |
1237 | dosattr |= ATTR_HIDDEN; | |
1238 | ||
1239 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); | |
388e57b2 SF |
1240 | if (rc != 0) |
1241 | goto out_reval; | |
6050247d SF |
1242 | |
1243 | goto retry_std_delete; | |
1da177e4 | 1244 | } |
6050247d SF |
1245 | |
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); | |
1249 | ||
388e57b2 | 1250 | out_reval: |
4523cc30 | 1251 | if (inode) { |
ff694527 SF |
1252 | cifs_inode = CIFS_I(inode); |
1253 | cifs_inode->time = 0; /* will force revalidate to get info | |
5f0319a7 JL |
1254 | when needed */ |
1255 | inode->i_ctime = current_fs_time(sb); | |
06bcfedd | 1256 | } |
5f0319a7 | 1257 | dir->i_ctime = dir->i_mtime = current_fs_time(sb); |
ff694527 | 1258 | cifs_inode = CIFS_I(dir); |
6050247d | 1259 | CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ |
7ffec372 | 1260 | unlink_out: |
1da177e4 | 1261 | kfree(full_path); |
6050247d | 1262 | kfree(attrs); |
1da177e4 | 1263 | FreeXid(xid); |
7ffec372 | 1264 | cifs_put_tlink(tlink); |
1da177e4 LT |
1265 | return rc; |
1266 | } | |
1267 | ||
1268 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) | |
1269 | { | |
6b37faa1 | 1270 | int rc = 0, tmprc; |
1da177e4 LT |
1271 | int xid; |
1272 | struct cifs_sb_info *cifs_sb; | |
7ffec372 | 1273 | struct tcon_link *tlink; |
1da177e4 LT |
1274 | struct cifsTconInfo *pTcon; |
1275 | char *full_path = NULL; | |
1276 | struct inode *newinode = NULL; | |
cc0bad75 | 1277 | struct cifs_fattr fattr; |
1da177e4 | 1278 | |
b6b38f70 | 1279 | cFYI(1, "In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode); |
1da177e4 | 1280 | |
1da177e4 | 1281 | cifs_sb = CIFS_SB(inode->i_sb); |
7ffec372 JL |
1282 | tlink = cifs_sb_tlink(cifs_sb); |
1283 | if (IS_ERR(tlink)) | |
1284 | return PTR_ERR(tlink); | |
1285 | pTcon = tlink_tcon(tlink); | |
1286 | ||
1287 | xid = GetXid(); | |
1da177e4 | 1288 | |
7f57356b | 1289 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 1290 | if (full_path == NULL) { |
0f3bc09e | 1291 | rc = -ENOMEM; |
7ffec372 | 1292 | goto mkdir_out; |
1da177e4 | 1293 | } |
50c2f753 | 1294 | |
fb8c4b14 SF |
1295 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
1296 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & | |
2dd29d31 SF |
1297 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
1298 | u32 oplock = 0; | |
f6d09982 | 1299 | FILE_UNIX_BASIC_INFO *pInfo = |
2dd29d31 | 1300 | kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
fb8c4b14 | 1301 | if (pInfo == NULL) { |
2dd29d31 SF |
1302 | rc = -ENOMEM; |
1303 | goto mkdir_out; | |
1304 | } | |
50c2f753 | 1305 | |
ce3b0f8d | 1306 | mode &= ~current_umask(); |
2dd29d31 SF |
1307 | rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, |
1308 | mode, NULL /* netfid */, pInfo, &oplock, | |
fb8c4b14 SF |
1309 | full_path, cifs_sb->local_nls, |
1310 | cifs_sb->mnt_cifs_flags & | |
2dd29d31 | 1311 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
c45d707f SF |
1312 | if (rc == -EOPNOTSUPP) { |
1313 | kfree(pInfo); | |
1314 | goto mkdir_retry_old; | |
1315 | } else if (rc) { | |
b6b38f70 | 1316 | cFYI(1, "posix mkdir returned 0x%x", rc); |
2dd29d31 SF |
1317 | d_drop(direntry); |
1318 | } else { | |
8f2376ad CG |
1319 | if (pInfo->Type == cpu_to_le32(-1)) { |
1320 | /* no return info, go query for it */ | |
5a07cdf8 | 1321 | kfree(pInfo); |
fb8c4b14 | 1322 | goto mkdir_get_info; |
5a07cdf8 | 1323 | } |
fb8c4b14 SF |
1324 | /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need |
1325 | to set uid/gid */ | |
2dd29d31 | 1326 | inc_nlink(inode); |
cbac3cba | 1327 | |
cc0bad75 | 1328 | cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb); |
4065c802 | 1329 | cifs_fill_uniqueid(inode->i_sb, &fattr); |
cc0bad75 JL |
1330 | newinode = cifs_iget(inode->i_sb, &fattr); |
1331 | if (!newinode) { | |
5a07cdf8 | 1332 | kfree(pInfo); |
cbac3cba | 1333 | goto mkdir_get_info; |
5a07cdf8 | 1334 | } |
6b37faa1 | 1335 | |
2dd29d31 | 1336 | d_instantiate(direntry, newinode); |
cbac3cba | 1337 | |
cbac3cba | 1338 | #ifdef CONFIG_CIFS_DEBUG2 |
b6b38f70 JP |
1339 | cFYI(1, "instantiated dentry %p %s to inode %p", |
1340 | direntry, direntry->d_name.name, newinode); | |
cbac3cba | 1341 | |
fb8c4b14 | 1342 | if (newinode->i_nlink != 2) |
b6b38f70 JP |
1343 | cFYI(1, "unexpected number of links %d", |
1344 | newinode->i_nlink); | |
cbac3cba | 1345 | #endif |
2dd29d31 SF |
1346 | } |
1347 | kfree(pInfo); | |
1348 | goto mkdir_out; | |
fb8c4b14 | 1349 | } |
c45d707f | 1350 | mkdir_retry_old: |
1da177e4 | 1351 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
737b758c SF |
1352 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
1353 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1da177e4 | 1354 | if (rc) { |
b6b38f70 | 1355 | cFYI(1, "cifs_mkdir returned 0x%x", rc); |
1da177e4 LT |
1356 | d_drop(direntry); |
1357 | } else { | |
fb8c4b14 | 1358 | mkdir_get_info: |
d8c76e6f | 1359 | inc_nlink(inode); |
c18c842b | 1360 | if (pTcon->unix_ext) |
1da177e4 | 1361 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
fb8c4b14 | 1362 | inode->i_sb, xid); |
1da177e4 LT |
1363 | else |
1364 | rc = cifs_get_inode_info(&newinode, full_path, NULL, | |
8b1327f6 | 1365 | inode->i_sb, xid, NULL); |
1da177e4 | 1366 | |
1da177e4 | 1367 | d_instantiate(direntry, newinode); |
2dd29d31 | 1368 | /* setting nlink not necessary except in cases where we |
fb8c4b14 | 1369 | * failed to get it from the server or was set bogus */ |
2dd29d31 | 1370 | if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) |
fb8c4b14 | 1371 | direntry->d_inode->i_nlink = 2; |
95089910 | 1372 | |
ce3b0f8d | 1373 | mode &= ~current_umask(); |
95089910 JL |
1374 | /* must turn on setgid bit if parent dir has it */ |
1375 | if (inode->i_mode & S_ISGID) | |
1376 | mode |= S_ISGID; | |
1377 | ||
c18c842b | 1378 | if (pTcon->unix_ext) { |
4e1e7fb9 JL |
1379 | struct cifs_unix_set_info_args args = { |
1380 | .mode = mode, | |
1381 | .ctime = NO_CHANGE_64, | |
1382 | .atime = NO_CHANGE_64, | |
1383 | .mtime = NO_CHANGE_64, | |
1384 | .device = 0, | |
1385 | }; | |
d0d2f2df | 1386 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
a001e5b5 | 1387 | args.uid = (__u64)current_fsuid(); |
95089910 JL |
1388 | if (inode->i_mode & S_ISGID) |
1389 | args.gid = (__u64)inode->i_gid; | |
1390 | else | |
a001e5b5 | 1391 | args.gid = (__u64)current_fsgid(); |
1da177e4 | 1392 | } else { |
4e1e7fb9 JL |
1393 | args.uid = NO_CHANGE_64; |
1394 | args.gid = NO_CHANGE_64; | |
1da177e4 | 1395 | } |
01ea95e3 JL |
1396 | CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, |
1397 | cifs_sb->local_nls, | |
1398 | cifs_sb->mnt_cifs_flags & | |
1399 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
3ce53fc4 | 1400 | } else { |
67750fb9 JL |
1401 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
1402 | (mode & S_IWUGO) == 0) { | |
1403 | FILE_BASIC_INFO pInfo; | |
6b37faa1 JL |
1404 | struct cifsInodeInfo *cifsInode; |
1405 | u32 dosattrs; | |
1406 | ||
67750fb9 | 1407 | memset(&pInfo, 0, sizeof(pInfo)); |
6b37faa1 JL |
1408 | cifsInode = CIFS_I(newinode); |
1409 | dosattrs = cifsInode->cifsAttrs|ATTR_READONLY; | |
1410 | pInfo.Attributes = cpu_to_le32(dosattrs); | |
1411 | tmprc = CIFSSMBSetPathInfo(xid, pTcon, | |
1412 | full_path, &pInfo, | |
1413 | cifs_sb->local_nls, | |
67750fb9 JL |
1414 | cifs_sb->mnt_cifs_flags & |
1415 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
6b37faa1 JL |
1416 | if (tmprc == 0) |
1417 | cifsInode->cifsAttrs = dosattrs; | |
67750fb9 | 1418 | } |
fb8c4b14 | 1419 | if (direntry->d_inode) { |
b0fd30d3 JL |
1420 | if (cifs_sb->mnt_cifs_flags & |
1421 | CIFS_MOUNT_DYNPERM) | |
1422 | direntry->d_inode->i_mode = | |
1423 | (mode | S_IFDIR); | |
4e94a105 | 1424 | |
fb8c4b14 | 1425 | if (cifs_sb->mnt_cifs_flags & |
6473a559 | 1426 | CIFS_MOUNT_SET_UID) { |
fb8c4b14 | 1427 | direntry->d_inode->i_uid = |
a001e5b5 | 1428 | current_fsuid(); |
95089910 JL |
1429 | if (inode->i_mode & S_ISGID) |
1430 | direntry->d_inode->i_gid = | |
1431 | inode->i_gid; | |
1432 | else | |
1433 | direntry->d_inode->i_gid = | |
a001e5b5 | 1434 | current_fsgid(); |
6473a559 SF |
1435 | } |
1436 | } | |
2a138ebb | 1437 | } |
1da177e4 | 1438 | } |
fb8c4b14 | 1439 | mkdir_out: |
1da177e4 LT |
1440 | kfree(full_path); |
1441 | FreeXid(xid); | |
7ffec372 | 1442 | cifs_put_tlink(tlink); |
1da177e4 LT |
1443 | return rc; |
1444 | } | |
1445 | ||
1446 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) | |
1447 | { | |
1448 | int rc = 0; | |
1449 | int xid; | |
1450 | struct cifs_sb_info *cifs_sb; | |
7ffec372 | 1451 | struct tcon_link *tlink; |
1da177e4 LT |
1452 | struct cifsTconInfo *pTcon; |
1453 | char *full_path = NULL; | |
1454 | struct cifsInodeInfo *cifsInode; | |
1455 | ||
b6b38f70 | 1456 | cFYI(1, "cifs_rmdir, inode = 0x%p", inode); |
1da177e4 LT |
1457 | |
1458 | xid = GetXid(); | |
1459 | ||
7f57356b | 1460 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 1461 | if (full_path == NULL) { |
0f3bc09e | 1462 | rc = -ENOMEM; |
7ffec372 | 1463 | goto rmdir_exit; |
1da177e4 LT |
1464 | } |
1465 | ||
7ffec372 JL |
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); | |
1470 | goto rmdir_exit; | |
1471 | } | |
1472 | pTcon = tlink_tcon(tlink); | |
1473 | ||
737b758c SF |
1474 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
1475 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 1476 | cifs_put_tlink(tlink); |
1da177e4 LT |
1477 | |
1478 | if (!rc) { | |
9a53c3a7 | 1479 | drop_nlink(inode); |
3677db10 | 1480 | spin_lock(&direntry->d_inode->i_lock); |
fb8c4b14 | 1481 | i_size_write(direntry->d_inode, 0); |
ce71ec36 | 1482 | clear_nlink(direntry->d_inode); |
3677db10 | 1483 | spin_unlock(&direntry->d_inode->i_lock); |
1da177e4 LT |
1484 | } |
1485 | ||
1486 | cifsInode = CIFS_I(direntry->d_inode); | |
1487 | cifsInode->time = 0; /* force revalidate to go get info when | |
1488 | needed */ | |
42c24544 SF |
1489 | |
1490 | cifsInode = CIFS_I(inode); | |
1491 | cifsInode->time = 0; /* force revalidate to get parent dir info | |
1492 | since cached search results now invalid */ | |
1493 | ||
1da177e4 LT |
1494 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
1495 | current_fs_time(inode->i_sb); | |
1496 | ||
7ffec372 | 1497 | rmdir_exit: |
1da177e4 LT |
1498 | kfree(full_path); |
1499 | FreeXid(xid); | |
1500 | return rc; | |
1501 | } | |
1502 | ||
ee2fd967 SF |
1503 | static int |
1504 | cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath, | |
1505 | struct dentry *to_dentry, const char *toPath) | |
1506 | { | |
1507 | struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb); | |
7ffec372 JL |
1508 | struct tcon_link *tlink; |
1509 | struct cifsTconInfo *pTcon; | |
ee2fd967 SF |
1510 | __u16 srcfid; |
1511 | int oplock, rc; | |
1512 | ||
7ffec372 JL |
1513 | tlink = cifs_sb_tlink(cifs_sb); |
1514 | if (IS_ERR(tlink)) | |
1515 | return PTR_ERR(tlink); | |
1516 | pTcon = tlink_tcon(tlink); | |
1517 | ||
ee2fd967 SF |
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); | |
1522 | ||
1523 | /* | |
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. | |
1527 | */ | |
1528 | if (rc == 0 || rc != -ETXTBSY) | |
7ffec372 | 1529 | goto do_rename_exit; |
ee2fd967 | 1530 | |
ed0e3ace JL |
1531 | /* open-file renames don't work across directories */ |
1532 | if (to_dentry->d_parent != from_dentry->d_parent) | |
7ffec372 | 1533 | goto do_rename_exit; |
ed0e3ace | 1534 | |
ee2fd967 SF |
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); | |
1540 | ||
1541 | if (rc == 0) { | |
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); | |
1546 | ||
1547 | CIFSSMBClose(xid, pTcon, srcfid); | |
1548 | } | |
7ffec372 JL |
1549 | do_rename_exit: |
1550 | cifs_put_tlink(tlink); | |
ee2fd967 SF |
1551 | return rc; |
1552 | } | |
1553 | ||
14121bdc JL |
1554 | int cifs_rename(struct inode *source_dir, struct dentry *source_dentry, |
1555 | struct inode *target_dir, struct dentry *target_dentry) | |
1da177e4 | 1556 | { |
ee2fd967 SF |
1557 | char *fromName = NULL; |
1558 | char *toName = NULL; | |
639e7a91 | 1559 | struct cifs_sb_info *cifs_sb; |
7ffec372 | 1560 | struct tcon_link *tlink; |
14121bdc | 1561 | struct cifsTconInfo *tcon; |
ee2fd967 SF |
1562 | FILE_UNIX_BASIC_INFO *info_buf_source = NULL; |
1563 | FILE_UNIX_BASIC_INFO *info_buf_target; | |
8d281efb | 1564 | int xid, rc, tmprc; |
1da177e4 | 1565 | |
639e7a91 | 1566 | cifs_sb = CIFS_SB(source_dir->i_sb); |
7ffec372 JL |
1567 | tlink = cifs_sb_tlink(cifs_sb); |
1568 | if (IS_ERR(tlink)) | |
1569 | return PTR_ERR(tlink); | |
1570 | tcon = tlink_tcon(tlink); | |
1da177e4 | 1571 | |
ee2fd967 SF |
1572 | xid = GetXid(); |
1573 | ||
ee2fd967 SF |
1574 | /* |
1575 | * we already have the rename sem so we do not need to | |
1576 | * grab it again here to protect the path integrity | |
1577 | */ | |
14121bdc | 1578 | fromName = build_path_from_dentry(source_dentry); |
ee2fd967 SF |
1579 | if (fromName == NULL) { |
1580 | rc = -ENOMEM; | |
1581 | goto cifs_rename_exit; | |
1582 | } | |
1583 | ||
14121bdc | 1584 | toName = build_path_from_dentry(target_dentry); |
ee2fd967 | 1585 | if (toName == NULL) { |
1da177e4 LT |
1586 | rc = -ENOMEM; |
1587 | goto cifs_rename_exit; | |
1588 | } | |
1589 | ||
14121bdc JL |
1590 | rc = cifs_do_rename(xid, source_dentry, fromName, |
1591 | target_dentry, toName); | |
ee2fd967 | 1592 | |
14121bdc JL |
1593 | if (rc == -EEXIST && tcon->unix_ext) { |
1594 | /* | |
1595 | * Are src and dst hardlinks of same inode? We can | |
1596 | * only tell with unix extensions enabled | |
1597 | */ | |
1598 | info_buf_source = | |
1599 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), | |
1600 | GFP_KERNEL); | |
1601 | if (info_buf_source == NULL) { | |
1602 | rc = -ENOMEM; | |
1603 | goto cifs_rename_exit; | |
1604 | } | |
1605 | ||
1606 | info_buf_target = info_buf_source + 1; | |
8d281efb | 1607 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName, |
14121bdc | 1608 | info_buf_source, |
639e7a91 JL |
1609 | cifs_sb->local_nls, |
1610 | cifs_sb->mnt_cifs_flags & | |
14121bdc | 1611 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
8d281efb | 1612 | if (tmprc != 0) |
14121bdc | 1613 | goto unlink_target; |
ee2fd967 | 1614 | |
639e7a91 JL |
1615 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, toName, |
1616 | info_buf_target, | |
1617 | cifs_sb->local_nls, | |
1618 | cifs_sb->mnt_cifs_flags & | |
14121bdc JL |
1619 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1620 | ||
8d281efb | 1621 | if (tmprc == 0 && (info_buf_source->UniqueId == |
ae6884a9 | 1622 | info_buf_target->UniqueId)) { |
14121bdc | 1623 | /* same file, POSIX says that this is a noop */ |
ae6884a9 | 1624 | rc = 0; |
14121bdc | 1625 | goto cifs_rename_exit; |
ae6884a9 | 1626 | } |
14121bdc | 1627 | } /* else ... BB we could add the same check for Windows by |
ee2fd967 | 1628 | checking the UniqueId via FILE_INTERNAL_INFO */ |
14121bdc | 1629 | |
ee2fd967 | 1630 | unlink_target: |
fc6f3943 JL |
1631 | /* Try unlinking the target dentry if it's not negative */ |
1632 | if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) { | |
8d281efb | 1633 | tmprc = cifs_unlink(target_dir, target_dentry); |
14121bdc JL |
1634 | if (tmprc) |
1635 | goto cifs_rename_exit; | |
1636 | ||
14121bdc JL |
1637 | rc = cifs_do_rename(xid, source_dentry, fromName, |
1638 | target_dentry, toName); | |
1da177e4 LT |
1639 | } |
1640 | ||
1641 | cifs_rename_exit: | |
ee2fd967 | 1642 | kfree(info_buf_source); |
1da177e4 LT |
1643 | kfree(fromName); |
1644 | kfree(toName); | |
1645 | FreeXid(xid); | |
7ffec372 | 1646 | cifs_put_tlink(tlink); |
1da177e4 LT |
1647 | return rc; |
1648 | } | |
1649 | ||
df2cf170 JL |
1650 | static bool |
1651 | cifs_inode_needs_reval(struct inode *inode) | |
1da177e4 | 1652 | { |
df2cf170 | 1653 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
6d20e840 | 1654 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
1da177e4 | 1655 | |
df2cf170 JL |
1656 | if (cifs_i->clientCanCacheRead) |
1657 | return false; | |
1da177e4 | 1658 | |
df2cf170 JL |
1659 | if (!lookupCacheEnabled) |
1660 | return true; | |
1da177e4 | 1661 | |
df2cf170 JL |
1662 | if (cifs_i->time == 0) |
1663 | return true; | |
1da177e4 | 1664 | |
6d20e840 SJ |
1665 | if (!time_in_range(jiffies, cifs_i->time, |
1666 | cifs_i->time + cifs_sb->actimeo)) | |
df2cf170 JL |
1667 | return true; |
1668 | ||
db19272e | 1669 | /* hardlinked files w/ noserverino get "special" treatment */ |
6d20e840 | 1670 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && |
db19272e JL |
1671 | S_ISREG(inode->i_mode) && inode->i_nlink != 1) |
1672 | return true; | |
1673 | ||
df2cf170 JL |
1674 | return false; |
1675 | } | |
1676 | ||
523fb8c8 SJ |
1677 | /* |
1678 | * Zap the cache. Called when invalid_mapping flag is set. | |
1679 | */ | |
df2cf170 JL |
1680 | static void |
1681 | cifs_invalidate_mapping(struct inode *inode) | |
1682 | { | |
1683 | int rc; | |
1684 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); | |
1685 | ||
1686 | cifs_i->invalid_mapping = false; | |
1687 | ||
1688 | /* write back any cached data */ | |
1689 | if (inode->i_mapping && inode->i_mapping->nrpages != 0) { | |
1690 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b | 1691 | mapping_set_error(inode->i_mapping, rc); |
df2cf170 JL |
1692 | } |
1693 | invalidate_remote_inode(inode); | |
9451a9a5 | 1694 | cifs_fscache_reset_inode_cookie(inode); |
df2cf170 JL |
1695 | } |
1696 | ||
abab095d JL |
1697 | int cifs_revalidate_file(struct file *filp) |
1698 | { | |
1699 | int rc = 0; | |
1700 | struct inode *inode = filp->f_path.dentry->d_inode; | |
ba00ba64 | 1701 | struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data; |
abab095d JL |
1702 | |
1703 | if (!cifs_inode_needs_reval(inode)) | |
1704 | goto check_inval; | |
1705 | ||
13cfb733 | 1706 | if (tlink_tcon(cfile->tlink)->unix_ext) |
abab095d JL |
1707 | rc = cifs_get_file_info_unix(filp); |
1708 | else | |
1709 | rc = cifs_get_file_info(filp); | |
1710 | ||
1711 | check_inval: | |
1712 | if (CIFS_I(inode)->invalid_mapping) | |
1713 | cifs_invalidate_mapping(inode); | |
1714 | ||
1715 | return rc; | |
1716 | } | |
1717 | ||
df2cf170 JL |
1718 | /* revalidate a dentry's inode attributes */ |
1719 | int cifs_revalidate_dentry(struct dentry *dentry) | |
1720 | { | |
1721 | int xid; | |
1722 | int rc = 0; | |
1723 | char *full_path = NULL; | |
1724 | struct inode *inode = dentry->d_inode; | |
1725 | struct super_block *sb = dentry->d_sb; | |
1726 | ||
1727 | if (inode == NULL) | |
1728 | return -ENOENT; | |
1da177e4 LT |
1729 | |
1730 | xid = GetXid(); | |
1731 | ||
df2cf170 JL |
1732 | if (!cifs_inode_needs_reval(inode)) |
1733 | goto check_inval; | |
1da177e4 LT |
1734 | |
1735 | /* can not safely grab the rename sem here if rename calls revalidate | |
1736 | since that would deadlock */ | |
df2cf170 | 1737 | full_path = build_path_from_dentry(dentry); |
1da177e4 | 1738 | if (full_path == NULL) { |
0f3bc09e | 1739 | rc = -ENOMEM; |
df2cf170 | 1740 | goto check_inval; |
1da177e4 LT |
1741 | } |
1742 | ||
f19159dc | 1743 | cFYI(1, "Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " |
df2cf170 | 1744 | "jiffies %ld", full_path, inode, inode->i_count.counter, |
f19159dc | 1745 | dentry, dentry->d_time, jiffies); |
1da177e4 | 1746 | |
0d424ad0 | 1747 | if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext) |
df2cf170 JL |
1748 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
1749 | else | |
1750 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, | |
1751 | xid, NULL); | |
1da177e4 | 1752 | |
df2cf170 JL |
1753 | check_inval: |
1754 | if (CIFS_I(inode)->invalid_mapping) | |
1755 | cifs_invalidate_mapping(inode); | |
50c2f753 | 1756 | |
1da177e4 LT |
1757 | kfree(full_path); |
1758 | FreeXid(xid); | |
1759 | return rc; | |
1760 | } | |
1761 | ||
1762 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1c456013 | 1763 | struct kstat *stat) |
1da177e4 | 1764 | { |
3aa1c8c2 JL |
1765 | struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); |
1766 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); | |
df2cf170 | 1767 | int err = cifs_revalidate_dentry(dentry); |
3aa1c8c2 | 1768 | |
5fe14c85 | 1769 | if (!err) { |
1da177e4 | 1770 | generic_fillattr(dentry->d_inode, stat); |
5fe14c85 | 1771 | stat->blksize = CIFS_MAX_MSGSIZE; |
cc0bad75 | 1772 | stat->ino = CIFS_I(dentry->d_inode)->uniqueid; |
1c456013 JL |
1773 | |
1774 | /* | |
1775 | * If on a multiuser mount without unix extensions, and the | |
1776 | * admin hasn't overridden them, set the ownership to the | |
1777 | * fsuid/fsgid of the current process. | |
1778 | */ | |
3aa1c8c2 JL |
1779 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) && |
1780 | !tcon->unix_ext) { | |
1c456013 | 1781 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) |
3aa1c8c2 | 1782 | stat->uid = current_fsuid(); |
1c456013 | 1783 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) |
3aa1c8c2 JL |
1784 | stat->gid = current_fsgid(); |
1785 | } | |
5fe14c85 | 1786 | } |
1da177e4 LT |
1787 | return err; |
1788 | } | |
1789 | ||
1790 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) | |
1791 | { | |
1792 | pgoff_t index = from >> PAGE_CACHE_SHIFT; | |
1793 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
1794 | struct page *page; | |
1da177e4 LT |
1795 | int rc = 0; |
1796 | ||
1797 | page = grab_cache_page(mapping, index); | |
1798 | if (!page) | |
1799 | return -ENOMEM; | |
1800 | ||
eebd2aa3 | 1801 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
1da177e4 LT |
1802 | unlock_page(page); |
1803 | page_cache_release(page); | |
1804 | return rc; | |
1805 | } | |
1806 | ||
1b947463 | 1807 | static void cifs_setsize(struct inode *inode, loff_t offset) |
3677db10 | 1808 | { |
c08d3b0e | 1809 | loff_t oldsize; |
3677db10 | 1810 | |
ba6a46a0 | 1811 | spin_lock(&inode->i_lock); |
c08d3b0e | 1812 | oldsize = inode->i_size; |
3677db10 | 1813 | i_size_write(inode, offset); |
ba6a46a0 | 1814 | spin_unlock(&inode->i_lock); |
1b947463 | 1815 | |
c08d3b0e | 1816 | truncate_pagecache(inode, oldsize, offset); |
3677db10 SF |
1817 | } |
1818 | ||
8efdbde6 JL |
1819 | static int |
1820 | cifs_set_file_size(struct inode *inode, struct iattr *attrs, | |
1821 | int xid, char *full_path) | |
1822 | { | |
1823 | int rc; | |
1824 | struct cifsFileInfo *open_file; | |
1825 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
1826 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1827 | struct tcon_link *tlink = NULL; |
ba00ba64 | 1828 | struct cifsTconInfo *pTcon = NULL; |
8efdbde6 JL |
1829 | |
1830 | /* | |
1831 | * To avoid spurious oplock breaks from server, in the case of | |
1832 | * inodes that we already have open, avoid doing path based | |
1833 | * setting of file size if we can do it by handle. | |
1834 | * This keeps our caching token (oplock) and avoids timeouts | |
1835 | * when the local oplock break takes longer to flush | |
1836 | * writebehind data than the SMB timeout for the SetPathInfo | |
1837 | * request would allow | |
1838 | */ | |
6508d904 | 1839 | open_file = find_writable_file(cifsInode, true); |
8efdbde6 JL |
1840 | if (open_file) { |
1841 | __u16 nfid = open_file->netfid; | |
1842 | __u32 npid = open_file->pid; | |
13cfb733 | 1843 | pTcon = tlink_tcon(open_file->tlink); |
8efdbde6 JL |
1844 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid, |
1845 | npid, false); | |
6ab409b5 | 1846 | cifsFileInfo_put(open_file); |
b6b38f70 | 1847 | cFYI(1, "SetFSize for attrs rc = %d", rc); |
8efdbde6 JL |
1848 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
1849 | unsigned int bytes_written; | |
1850 | rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size, | |
1851 | &bytes_written, NULL, NULL, 1); | |
b6b38f70 | 1852 | cFYI(1, "Wrt seteof rc %d", rc); |
8efdbde6 JL |
1853 | } |
1854 | } else | |
1855 | rc = -EINVAL; | |
1856 | ||
1857 | if (rc != 0) { | |
7ffec372 JL |
1858 | if (pTcon == NULL) { |
1859 | tlink = cifs_sb_tlink(cifs_sb); | |
1860 | if (IS_ERR(tlink)) | |
1861 | return PTR_ERR(tlink); | |
1862 | pTcon = tlink_tcon(tlink); | |
1863 | } | |
ba00ba64 | 1864 | |
8efdbde6 JL |
1865 | /* Set file size by pathname rather than by handle |
1866 | either because no valid, writeable file handle for | |
1867 | it was found or because there was an error setting | |
1868 | it by handle */ | |
1869 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, | |
1870 | false, cifs_sb->local_nls, | |
1871 | cifs_sb->mnt_cifs_flags & | |
1872 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
b6b38f70 | 1873 | cFYI(1, "SetEOF by path (setattrs) rc = %d", rc); |
8efdbde6 JL |
1874 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
1875 | __u16 netfid; | |
1876 | int oplock = 0; | |
1877 | ||
1878 | rc = SMBLegacyOpen(xid, pTcon, full_path, | |
1879 | FILE_OPEN, GENERIC_WRITE, | |
1880 | CREATE_NOT_DIR, &netfid, &oplock, NULL, | |
1881 | cifs_sb->local_nls, | |
1882 | cifs_sb->mnt_cifs_flags & | |
1883 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1884 | if (rc == 0) { | |
1885 | unsigned int bytes_written; | |
1886 | rc = CIFSSMBWrite(xid, pTcon, netfid, 0, | |
1887 | attrs->ia_size, | |
1888 | &bytes_written, NULL, | |
1889 | NULL, 1); | |
b6b38f70 | 1890 | cFYI(1, "wrt seteof rc %d", rc); |
8efdbde6 JL |
1891 | CIFSSMBClose(xid, pTcon, netfid); |
1892 | } | |
1893 | } | |
7ffec372 JL |
1894 | if (tlink) |
1895 | cifs_put_tlink(tlink); | |
8efdbde6 JL |
1896 | } |
1897 | ||
1898 | if (rc == 0) { | |
fbec9ab9 | 1899 | cifsInode->server_eof = attrs->ia_size; |
1b947463 | 1900 | cifs_setsize(inode, attrs->ia_size); |
8efdbde6 JL |
1901 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
1902 | } | |
1903 | ||
1904 | return rc; | |
1905 | } | |
1906 | ||
3fe5c1dd JL |
1907 | static int |
1908 | cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs) | |
1909 | { | |
1910 | int rc; | |
1911 | int xid; | |
1912 | char *full_path = NULL; | |
1913 | struct inode *inode = direntry->d_inode; | |
1914 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
1915 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1916 | struct tcon_link *tlink; |
ba00ba64 | 1917 | struct cifsTconInfo *pTcon; |
3fe5c1dd | 1918 | struct cifs_unix_set_info_args *args = NULL; |
3bbeeb3c | 1919 | struct cifsFileInfo *open_file; |
3fe5c1dd | 1920 | |
b6b38f70 JP |
1921 | cFYI(1, "setattr_unix on file %s attrs->ia_valid=0x%x", |
1922 | direntry->d_name.name, attrs->ia_valid); | |
3fe5c1dd JL |
1923 | |
1924 | xid = GetXid(); | |
1925 | ||
db78b877 CH |
1926 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
1927 | attrs->ia_valid |= ATTR_FORCE; | |
1928 | ||
1929 | rc = inode_change_ok(inode, attrs); | |
1930 | if (rc < 0) | |
1931 | goto out; | |
3fe5c1dd JL |
1932 | |
1933 | full_path = build_path_from_dentry(direntry); | |
1934 | if (full_path == NULL) { | |
1935 | rc = -ENOMEM; | |
1936 | goto out; | |
1937 | } | |
1938 | ||
0f4d634c JL |
1939 | /* |
1940 | * Attempt to flush data before changing attributes. We need to do | |
1941 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the | |
1942 | * ownership or mode then we may also need to do this. Here, we take | |
1943 | * the safe way out and just do the flush on all setattr requests. If | |
1944 | * the flush returns error, store it to report later and continue. | |
1945 | * | |
1946 | * BB: This should be smarter. Why bother flushing pages that | |
1947 | * will be truncated anyway? Also, should we error out here if | |
1948 | * the flush returns error? | |
1949 | */ | |
1950 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b JL |
1951 | mapping_set_error(inode->i_mapping, rc); |
1952 | rc = 0; | |
3fe5c1dd JL |
1953 | |
1954 | if (attrs->ia_valid & ATTR_SIZE) { | |
1955 | rc = cifs_set_file_size(inode, attrs, xid, full_path); | |
1956 | if (rc != 0) | |
1957 | goto out; | |
1958 | } | |
1959 | ||
1960 | /* skip mode change if it's just for clearing setuid/setgid */ | |
1961 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) | |
1962 | attrs->ia_valid &= ~ATTR_MODE; | |
1963 | ||
1964 | args = kmalloc(sizeof(*args), GFP_KERNEL); | |
1965 | if (args == NULL) { | |
1966 | rc = -ENOMEM; | |
1967 | goto out; | |
1968 | } | |
1969 | ||
1970 | /* set up the struct */ | |
1971 | if (attrs->ia_valid & ATTR_MODE) | |
1972 | args->mode = attrs->ia_mode; | |
1973 | else | |
1974 | args->mode = NO_CHANGE_64; | |
1975 | ||
1976 | if (attrs->ia_valid & ATTR_UID) | |
1977 | args->uid = attrs->ia_uid; | |
1978 | else | |
1979 | args->uid = NO_CHANGE_64; | |
1980 | ||
1981 | if (attrs->ia_valid & ATTR_GID) | |
1982 | args->gid = attrs->ia_gid; | |
1983 | else | |
1984 | args->gid = NO_CHANGE_64; | |
1985 | ||
1986 | if (attrs->ia_valid & ATTR_ATIME) | |
1987 | args->atime = cifs_UnixTimeToNT(attrs->ia_atime); | |
1988 | else | |
1989 | args->atime = NO_CHANGE_64; | |
1990 | ||
1991 | if (attrs->ia_valid & ATTR_MTIME) | |
1992 | args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime); | |
1993 | else | |
1994 | args->mtime = NO_CHANGE_64; | |
1995 | ||
1996 | if (attrs->ia_valid & ATTR_CTIME) | |
1997 | args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime); | |
1998 | else | |
1999 | args->ctime = NO_CHANGE_64; | |
2000 | ||
2001 | args->device = 0; | |
6508d904 | 2002 | open_file = find_writable_file(cifsInode, true); |
3bbeeb3c JL |
2003 | if (open_file) { |
2004 | u16 nfid = open_file->netfid; | |
2005 | u32 npid = open_file->pid; | |
13cfb733 | 2006 | pTcon = tlink_tcon(open_file->tlink); |
3bbeeb3c | 2007 | rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid); |
6ab409b5 | 2008 | cifsFileInfo_put(open_file); |
3bbeeb3c | 2009 | } else { |
7ffec372 JL |
2010 | tlink = cifs_sb_tlink(cifs_sb); |
2011 | if (IS_ERR(tlink)) { | |
2012 | rc = PTR_ERR(tlink); | |
2013 | goto out; | |
2014 | } | |
2015 | pTcon = tlink_tcon(tlink); | |
3bbeeb3c | 2016 | rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args, |
01ea95e3 JL |
2017 | cifs_sb->local_nls, |
2018 | cifs_sb->mnt_cifs_flags & | |
2019 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 2020 | cifs_put_tlink(tlink); |
3bbeeb3c | 2021 | } |
3fe5c1dd | 2022 | |
1025774c CH |
2023 | if (rc) |
2024 | goto out; | |
ccd4bb1b | 2025 | |
1025774c | 2026 | if ((attrs->ia_valid & ATTR_SIZE) && |
1b947463 CH |
2027 | attrs->ia_size != i_size_read(inode)) |
2028 | truncate_setsize(inode, attrs->ia_size); | |
1025774c CH |
2029 | |
2030 | setattr_copy(inode, attrs); | |
2031 | mark_inode_dirty(inode); | |
2032 | ||
2033 | /* force revalidate when any of these times are set since some | |
2034 | of the fs types (eg ext3, fat) do not have fine enough | |
2035 | time granularity to match protocol, and we do not have a | |
2036 | a way (yet) to query the server fs's time granularity (and | |
2037 | whether it rounds times down). | |
2038 | */ | |
2039 | if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)) | |
2040 | cifsInode->time = 0; | |
3fe5c1dd JL |
2041 | out: |
2042 | kfree(args); | |
2043 | kfree(full_path); | |
2044 | FreeXid(xid); | |
2045 | return rc; | |
2046 | } | |
2047 | ||
0510eeb7 JL |
2048 | static int |
2049 | cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs) | |
1da177e4 LT |
2050 | { |
2051 | int xid; | |
3fe5c1dd JL |
2052 | struct inode *inode = direntry->d_inode; |
2053 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3fe5c1dd | 2054 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
1da177e4 LT |
2055 | char *full_path = NULL; |
2056 | int rc = -EACCES; | |
feb3e20c | 2057 | __u32 dosattr = 0; |
4e1e7fb9 | 2058 | __u64 mode = NO_CHANGE_64; |
3fe5c1dd | 2059 | |
1da177e4 LT |
2060 | xid = GetXid(); |
2061 | ||
b6b38f70 JP |
2062 | cFYI(1, "setattr on file %s attrs->iavalid 0x%x", |
2063 | direntry->d_name.name, attrs->ia_valid); | |
6473a559 | 2064 | |
db78b877 CH |
2065 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
2066 | attrs->ia_valid |= ATTR_FORCE; | |
2067 | ||
2068 | rc = inode_change_ok(inode, attrs); | |
2069 | if (rc < 0) { | |
2070 | FreeXid(xid); | |
2071 | return rc; | |
6473a559 | 2072 | } |
50c2f753 | 2073 | |
7f57356b | 2074 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 2075 | if (full_path == NULL) { |
0f3bc09e | 2076 | rc = -ENOMEM; |
1da177e4 | 2077 | FreeXid(xid); |
0f3bc09e | 2078 | return rc; |
1da177e4 | 2079 | } |
1da177e4 | 2080 | |
0f4d634c JL |
2081 | /* |
2082 | * Attempt to flush data before changing attributes. We need to do | |
2083 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the | |
2084 | * ownership or mode then we may also need to do this. Here, we take | |
2085 | * the safe way out and just do the flush on all setattr requests. If | |
2086 | * the flush returns error, store it to report later and continue. | |
2087 | * | |
2088 | * BB: This should be smarter. Why bother flushing pages that | |
2089 | * will be truncated anyway? Also, should we error out here if | |
2090 | * the flush returns error? | |
2091 | */ | |
2092 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b JL |
2093 | mapping_set_error(inode->i_mapping, rc); |
2094 | rc = 0; | |
cea21805 | 2095 | |
50531444 | 2096 | if (attrs->ia_valid & ATTR_SIZE) { |
8efdbde6 JL |
2097 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
2098 | if (rc != 0) | |
e30dcf3a | 2099 | goto cifs_setattr_exit; |
1da177e4 | 2100 | } |
4ca691a8 JL |
2101 | |
2102 | /* | |
2103 | * Without unix extensions we can't send ownership changes to the | |
2104 | * server, so silently ignore them. This is consistent with how | |
2105 | * local DOS/Windows filesystems behave (VFAT, NTFS, etc). With | |
2106 | * CIFSACL support + proper Windows to Unix idmapping, we may be | |
2107 | * able to support this in the future. | |
2108 | */ | |
3fe5c1dd | 2109 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) |
4ca691a8 | 2110 | attrs->ia_valid &= ~(ATTR_UID | ATTR_GID); |
1da177e4 | 2111 | |
d32c4f26 JL |
2112 | /* skip mode change if it's just for clearing setuid/setgid */ |
2113 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) | |
2114 | attrs->ia_valid &= ~ATTR_MODE; | |
2115 | ||
1da177e4 | 2116 | if (attrs->ia_valid & ATTR_MODE) { |
b6b38f70 | 2117 | cFYI(1, "Mode changed to 0%o", attrs->ia_mode); |
1da177e4 | 2118 | mode = attrs->ia_mode; |
1da177e4 LT |
2119 | } |
2120 | ||
3fe5c1dd | 2121 | if (attrs->ia_valid & ATTR_MODE) { |
cdbce9c8 | 2122 | rc = 0; |
79df1bae | 2123 | #ifdef CONFIG_CIFS_ACL |
78415d2d SP |
2124 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
2125 | rc = mode_to_cifs_acl(inode, full_path, mode); | |
2126 | if (rc) { | |
2127 | cFYI(1, "%s: Setting ACL failed with error: %d", | |
2128 | __func__, rc); | |
2129 | goto cifs_setattr_exit; | |
2130 | } | |
2131 | } else | |
79df1bae | 2132 | #endif /* CONFIG_CIFS_ACL */ |
5132861a JL |
2133 | if (((mode & S_IWUGO) == 0) && |
2134 | (cifsInode->cifsAttrs & ATTR_READONLY) == 0) { | |
feb3e20c JL |
2135 | |
2136 | dosattr = cifsInode->cifsAttrs | ATTR_READONLY; | |
2137 | ||
5132861a JL |
2138 | /* fix up mode if we're not using dynperm */ |
2139 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) | |
2140 | attrs->ia_mode = inode->i_mode & ~S_IWUGO; | |
2141 | } else if ((mode & S_IWUGO) && | |
2142 | (cifsInode->cifsAttrs & ATTR_READONLY)) { | |
feb3e20c JL |
2143 | |
2144 | dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY; | |
2145 | /* Attributes of 0 are ignored */ | |
2146 | if (dosattr == 0) | |
2147 | dosattr |= ATTR_NORMAL; | |
5132861a JL |
2148 | |
2149 | /* reset local inode permissions to normal */ | |
2150 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { | |
2151 | attrs->ia_mode &= ~(S_IALLUGO); | |
2152 | if (S_ISDIR(inode->i_mode)) | |
2153 | attrs->ia_mode |= | |
2154 | cifs_sb->mnt_dir_mode; | |
2155 | else | |
2156 | attrs->ia_mode |= | |
2157 | cifs_sb->mnt_file_mode; | |
2158 | } | |
2159 | } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { | |
2160 | /* ignore mode change - ATTR_READONLY hasn't changed */ | |
2161 | attrs->ia_valid &= ~ATTR_MODE; | |
1da177e4 | 2162 | } |
1da177e4 LT |
2163 | } |
2164 | ||
feb3e20c JL |
2165 | if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) || |
2166 | ((attrs->ia_valid & ATTR_MODE) && dosattr)) { | |
2167 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); | |
2168 | /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */ | |
1da177e4 | 2169 | |
e30dcf3a SF |
2170 | /* Even if error on time set, no sense failing the call if |
2171 | the server would set the time to a reasonable value anyway, | |
2172 | and this check ensures that we are not being called from | |
2173 | sys_utimes in which case we ought to fail the call back to | |
2174 | the user when the server rejects the call */ | |
fb8c4b14 | 2175 | if ((rc) && (attrs->ia_valid & |
feb3e20c | 2176 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
e30dcf3a | 2177 | rc = 0; |
1da177e4 LT |
2178 | } |
2179 | ||
2180 | /* do not need local check to inode_check_ok since the server does | |
2181 | that */ | |
1025774c CH |
2182 | if (rc) |
2183 | goto cifs_setattr_exit; | |
2184 | ||
2185 | if ((attrs->ia_valid & ATTR_SIZE) && | |
1b947463 CH |
2186 | attrs->ia_size != i_size_read(inode)) |
2187 | truncate_setsize(inode, attrs->ia_size); | |
1025774c CH |
2188 | |
2189 | setattr_copy(inode, attrs); | |
2190 | mark_inode_dirty(inode); | |
1025774c | 2191 | |
e30dcf3a | 2192 | cifs_setattr_exit: |
1da177e4 LT |
2193 | kfree(full_path); |
2194 | FreeXid(xid); | |
2195 | return rc; | |
2196 | } | |
2197 | ||
0510eeb7 JL |
2198 | int |
2199 | cifs_setattr(struct dentry *direntry, struct iattr *attrs) | |
2200 | { | |
2201 | struct inode *inode = direntry->d_inode; | |
2202 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
0d424ad0 | 2203 | struct cifsTconInfo *pTcon = cifs_sb_master_tcon(cifs_sb); |
0510eeb7 JL |
2204 | |
2205 | if (pTcon->unix_ext) | |
2206 | return cifs_setattr_unix(direntry, attrs); | |
2207 | ||
2208 | return cifs_setattr_nounix(direntry, attrs); | |
2209 | ||
2210 | /* BB: add cifs_setattr_legacy for really old servers */ | |
2211 | } | |
2212 | ||
99ee4dbd | 2213 | #if 0 |
1da177e4 LT |
2214 | void cifs_delete_inode(struct inode *inode) |
2215 | { | |
b6b38f70 | 2216 | cFYI(1, "In cifs_delete_inode, inode = 0x%p", inode); |
1da177e4 LT |
2217 | /* may have to add back in if and when safe distributed caching of |
2218 | directories added e.g. via FindNotify */ | |
2219 | } | |
99ee4dbd | 2220 | #endif |