Commit | Line | Data |
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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 | |
01c64fea | 35 | static void cifs_set_ops(struct inode *inode) |
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; | |
8be7e6ba PS |
47 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { |
48 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) | |
49 | inode->i_fop = &cifs_file_strict_nobrl_ops; | |
50 | else | |
51 | inode->i_fop = &cifs_file_strict_ops; | |
70eff55d CH |
52 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
53 | inode->i_fop = &cifs_file_nobrl_ops; | |
54 | else { /* not direct, send byte range locks */ | |
55 | inode->i_fop = &cifs_file_ops; | |
56 | } | |
57 | ||
70eff55d | 58 | /* check if server can support readpages */ |
0d424ad0 | 59 | if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf < |
70eff55d CH |
60 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
61 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; | |
62 | else | |
63 | inode->i_data.a_ops = &cifs_addr_ops; | |
64 | break; | |
65 | case S_IFDIR: | |
bc5b6e24 | 66 | #ifdef CONFIG_CIFS_DFS_UPCALL |
01c64fea | 67 | if (IS_AUTOMOUNT(inode)) { |
7962670e IM |
68 | inode->i_op = &cifs_dfs_referral_inode_operations; |
69 | } else { | |
bc5b6e24 SF |
70 | #else /* NO DFS support, treat as a directory */ |
71 | { | |
72 | #endif | |
7962670e IM |
73 | inode->i_op = &cifs_dir_inode_ops; |
74 | inode->i_fop = &cifs_dir_ops; | |
75 | } | |
70eff55d CH |
76 | break; |
77 | case S_IFLNK: | |
78 | inode->i_op = &cifs_symlink_inode_ops; | |
79 | break; | |
80 | default: | |
81 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
82 | break; | |
83 | } | |
84 | } | |
85 | ||
df2cf170 JL |
86 | /* check inode attributes against fattr. If they don't match, tag the |
87 | * inode for cache invalidation | |
88 | */ | |
89 | static void | |
90 | cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) | |
91 | { | |
92 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); | |
93 | ||
f96637be JP |
94 | cifs_dbg(FYI, "%s: revalidating inode %llu\n", |
95 | __func__, cifs_i->uniqueid); | |
df2cf170 JL |
96 | |
97 | if (inode->i_state & I_NEW) { | |
f96637be JP |
98 | cifs_dbg(FYI, "%s: inode %llu is new\n", |
99 | __func__, cifs_i->uniqueid); | |
df2cf170 JL |
100 | return; |
101 | } | |
102 | ||
103 | /* don't bother with revalidation if we have an oplock */ | |
104 | if (cifs_i->clientCanCacheRead) { | |
f96637be JP |
105 | cifs_dbg(FYI, "%s: inode %llu is oplocked\n", |
106 | __func__, cifs_i->uniqueid); | |
df2cf170 JL |
107 | return; |
108 | } | |
109 | ||
110 | /* revalidate if mtime or size have changed */ | |
111 | if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) && | |
112 | cifs_i->server_eof == fattr->cf_eof) { | |
f96637be JP |
113 | cifs_dbg(FYI, "%s: inode %llu is unchanged\n", |
114 | __func__, cifs_i->uniqueid); | |
df2cf170 JL |
115 | return; |
116 | } | |
117 | ||
f96637be JP |
118 | cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n", |
119 | __func__, cifs_i->uniqueid); | |
df2cf170 JL |
120 | cifs_i->invalid_mapping = true; |
121 | } | |
122 | ||
cc0bad75 JL |
123 | /* populate an inode with info from a cifs_fattr struct */ |
124 | void | |
125 | cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) | |
75f12983 | 126 | { |
cc0bad75 | 127 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
0b8f18e3 | 128 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
cc0bad75 | 129 | |
df2cf170 JL |
130 | cifs_revalidate_cache(inode, fattr); |
131 | ||
b7ca6928 | 132 | spin_lock(&inode->i_lock); |
cc0bad75 JL |
133 | inode->i_atime = fattr->cf_atime; |
134 | inode->i_mtime = fattr->cf_mtime; | |
135 | inode->i_ctime = fattr->cf_ctime; | |
cc0bad75 | 136 | inode->i_rdev = fattr->cf_rdev; |
bfe86848 | 137 | set_nlink(inode, fattr->cf_nlink); |
cc0bad75 JL |
138 | inode->i_uid = fattr->cf_uid; |
139 | inode->i_gid = fattr->cf_gid; | |
140 | ||
0b8f18e3 JL |
141 | /* if dynperm is set, don't clobber existing mode */ |
142 | if (inode->i_state & I_NEW || | |
143 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) | |
144 | inode->i_mode = fattr->cf_mode; | |
145 | ||
cc0bad75 | 146 | cifs_i->cifsAttrs = fattr->cf_cifsattrs; |
75f12983 | 147 | |
0b8f18e3 JL |
148 | if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL) |
149 | cifs_i->time = 0; | |
150 | else | |
151 | cifs_i->time = jiffies; | |
152 | ||
0b8f18e3 | 153 | cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING; |
cc0bad75 | 154 | |
835a36ca | 155 | cifs_i->server_eof = fattr->cf_eof; |
cc0bad75 JL |
156 | /* |
157 | * Can't safely change the file size here if the client is writing to | |
158 | * it due to potential races. | |
159 | */ | |
cc0bad75 JL |
160 | if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) { |
161 | i_size_write(inode, fattr->cf_eof); | |
162 | ||
163 | /* | |
164 | * i_blocks is not related to (i_size / i_blksize), | |
165 | * but instead 512 byte (2**9) size is required for | |
166 | * calculating num blocks. | |
167 | */ | |
168 | inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9; | |
169 | } | |
170 | spin_unlock(&inode->i_lock); | |
171 | ||
01c64fea DH |
172 | if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL) |
173 | inode->i_flags |= S_AUTOMOUNT; | |
c2b93e06 JL |
174 | if (inode->i_state & I_NEW) |
175 | cifs_set_ops(inode); | |
cc0bad75 JL |
176 | } |
177 | ||
4065c802 JL |
178 | void |
179 | cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr) | |
180 | { | |
181 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
182 | ||
183 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) | |
184 | return; | |
185 | ||
186 | fattr->cf_uniqueid = iunique(sb, ROOT_I); | |
187 | } | |
188 | ||
cc0bad75 JL |
189 | /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */ |
190 | void | |
191 | cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, | |
192 | struct cifs_sb_info *cifs_sb) | |
193 | { | |
194 | memset(fattr, 0, sizeof(*fattr)); | |
195 | fattr->cf_uniqueid = le64_to_cpu(info->UniqueId); | |
196 | fattr->cf_bytes = le64_to_cpu(info->NumOfBytes); | |
197 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
198 | ||
199 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
200 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime); | |
201 | fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange); | |
202 | fattr->cf_mode = le64_to_cpu(info->Permissions); | |
75f12983 CH |
203 | |
204 | /* | |
205 | * Since we set the inode type below we need to mask off | |
206 | * to avoid strange results if bits set above. | |
207 | */ | |
cc0bad75 | 208 | fattr->cf_mode &= ~S_IFMT; |
75f12983 CH |
209 | switch (le32_to_cpu(info->Type)) { |
210 | case UNIX_FILE: | |
cc0bad75 JL |
211 | fattr->cf_mode |= S_IFREG; |
212 | fattr->cf_dtype = DT_REG; | |
75f12983 CH |
213 | break; |
214 | case UNIX_SYMLINK: | |
cc0bad75 JL |
215 | fattr->cf_mode |= S_IFLNK; |
216 | fattr->cf_dtype = DT_LNK; | |
75f12983 CH |
217 | break; |
218 | case UNIX_DIR: | |
cc0bad75 JL |
219 | fattr->cf_mode |= S_IFDIR; |
220 | fattr->cf_dtype = DT_DIR; | |
75f12983 CH |
221 | break; |
222 | case UNIX_CHARDEV: | |
cc0bad75 JL |
223 | fattr->cf_mode |= S_IFCHR; |
224 | fattr->cf_dtype = DT_CHR; | |
225 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), | |
226 | le64_to_cpu(info->DevMinor) & MINORMASK); | |
75f12983 CH |
227 | break; |
228 | case UNIX_BLOCKDEV: | |
cc0bad75 JL |
229 | fattr->cf_mode |= S_IFBLK; |
230 | fattr->cf_dtype = DT_BLK; | |
231 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), | |
232 | le64_to_cpu(info->DevMinor) & MINORMASK); | |
75f12983 CH |
233 | break; |
234 | case UNIX_FIFO: | |
cc0bad75 JL |
235 | fattr->cf_mode |= S_IFIFO; |
236 | fattr->cf_dtype = DT_FIFO; | |
75f12983 CH |
237 | break; |
238 | case UNIX_SOCKET: | |
cc0bad75 JL |
239 | fattr->cf_mode |= S_IFSOCK; |
240 | fattr->cf_dtype = DT_SOCK; | |
75f12983 CH |
241 | break; |
242 | default: | |
243 | /* safest to call it a file if we do not know */ | |
cc0bad75 JL |
244 | fattr->cf_mode |= S_IFREG; |
245 | fattr->cf_dtype = DT_REG; | |
f96637be | 246 | cifs_dbg(FYI, "unknown type %d\n", le32_to_cpu(info->Type)); |
75f12983 CH |
247 | break; |
248 | } | |
249 | ||
46bbc25f EB |
250 | fattr->cf_uid = cifs_sb->mnt_uid; |
251 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) { | |
252 | u64 id = le64_to_cpu(info->Uid); | |
4a2c8cf5 EB |
253 | if (id < ((uid_t)-1)) { |
254 | kuid_t uid = make_kuid(&init_user_ns, id); | |
255 | if (uid_valid(uid)) | |
256 | fattr->cf_uid = uid; | |
257 | } | |
46bbc25f EB |
258 | } |
259 | ||
260 | fattr->cf_gid = cifs_sb->mnt_gid; | |
261 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) { | |
262 | u64 id = le64_to_cpu(info->Gid); | |
4a2c8cf5 EB |
263 | if (id < ((gid_t)-1)) { |
264 | kgid_t gid = make_kgid(&init_user_ns, id); | |
265 | if (gid_valid(gid)) | |
266 | fattr->cf_gid = gid; | |
267 | } | |
46bbc25f | 268 | } |
75f12983 | 269 | |
cc0bad75 | 270 | fattr->cf_nlink = le64_to_cpu(info->Nlinks); |
75f12983 CH |
271 | } |
272 | ||
b9a3260f | 273 | /* |
cc0bad75 JL |
274 | * Fill a cifs_fattr struct with fake inode info. |
275 | * | |
276 | * Needed to setup cifs_fattr data for the directory which is the | |
277 | * junction to the new submount (ie to setup the fake directory | |
278 | * which represents a DFS referral). | |
b9a3260f | 279 | */ |
f1230c97 | 280 | static void |
cc0bad75 | 281 | cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) |
0e4bbde9 | 282 | { |
cc0bad75 | 283 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
0e4bbde9 | 284 | |
f96637be | 285 | cifs_dbg(FYI, "creating fake fattr for DFS referral\n"); |
cc0bad75 JL |
286 | |
287 | memset(fattr, 0, sizeof(*fattr)); | |
288 | fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU; | |
289 | fattr->cf_uid = cifs_sb->mnt_uid; | |
290 | fattr->cf_gid = cifs_sb->mnt_gid; | |
291 | fattr->cf_atime = CURRENT_TIME; | |
292 | fattr->cf_ctime = CURRENT_TIME; | |
293 | fattr->cf_mtime = CURRENT_TIME; | |
294 | fattr->cf_nlink = 2; | |
295 | fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL; | |
0e4bbde9 SF |
296 | } |
297 | ||
4ad65044 PS |
298 | static int |
299 | cifs_get_file_info_unix(struct file *filp) | |
abab095d JL |
300 | { |
301 | int rc; | |
6d5786a3 | 302 | unsigned int xid; |
abab095d JL |
303 | FILE_UNIX_BASIC_INFO find_data; |
304 | struct cifs_fattr fattr; | |
496ad9aa | 305 | struct inode *inode = file_inode(filp); |
abab095d | 306 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
c21dfb69 | 307 | struct cifsFileInfo *cfile = filp->private_data; |
96daf2b0 | 308 | struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); |
abab095d | 309 | |
6d5786a3 | 310 | xid = get_xid(); |
4b4de76e | 311 | rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->fid.netfid, &find_data); |
abab095d JL |
312 | if (!rc) { |
313 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); | |
314 | } else if (rc == -EREMOTE) { | |
315 | cifs_create_dfs_fattr(&fattr, inode->i_sb); | |
316 | rc = 0; | |
317 | } | |
318 | ||
319 | cifs_fattr_to_inode(inode, &fattr); | |
6d5786a3 | 320 | free_xid(xid); |
abab095d JL |
321 | return rc; |
322 | } | |
323 | ||
1da177e4 | 324 | int cifs_get_inode_info_unix(struct inode **pinode, |
cc0bad75 | 325 | const unsigned char *full_path, |
6d5786a3 | 326 | struct super_block *sb, unsigned int xid) |
1da177e4 | 327 | { |
cc0bad75 | 328 | int rc; |
0e4bbde9 | 329 | FILE_UNIX_BASIC_INFO find_data; |
cc0bad75 | 330 | struct cifs_fattr fattr; |
96daf2b0 | 331 | struct cifs_tcon *tcon; |
7ffec372 | 332 | struct tcon_link *tlink; |
1da177e4 | 333 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
1da177e4 | 334 | |
f96637be | 335 | cifs_dbg(FYI, "Getting info on %s\n", full_path); |
7962670e | 336 | |
7ffec372 JL |
337 | tlink = cifs_sb_tlink(cifs_sb); |
338 | if (IS_ERR(tlink)) | |
339 | return PTR_ERR(tlink); | |
340 | tcon = tlink_tcon(tlink); | |
341 | ||
1da177e4 | 342 | /* could have done a find first instead but this returns more info */ |
cc0bad75 | 343 | rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data, |
737b758c SF |
344 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
345 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 346 | cifs_put_tlink(tlink); |
e911d0cc | 347 | |
cc0bad75 JL |
348 | if (!rc) { |
349 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); | |
350 | } else if (rc == -EREMOTE) { | |
351 | cifs_create_dfs_fattr(&fattr, sb); | |
352 | rc = 0; | |
353 | } else { | |
354 | return rc; | |
355 | } | |
1da177e4 | 356 | |
1b12b9c1 SM |
357 | /* check for Minshall+French symlinks */ |
358 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { | |
359 | int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); | |
360 | if (tmprc) | |
f96637be | 361 | cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc); |
1b12b9c1 SM |
362 | } |
363 | ||
0e4bbde9 | 364 | if (*pinode == NULL) { |
cc0bad75 | 365 | /* get new inode */ |
4065c802 | 366 | cifs_fill_uniqueid(sb, &fattr); |
cc0bad75 JL |
367 | *pinode = cifs_iget(sb, &fattr); |
368 | if (!*pinode) | |
0e4bbde9 | 369 | rc = -ENOMEM; |
cc0bad75 JL |
370 | } else { |
371 | /* we already have inode, update it */ | |
372 | cifs_fattr_to_inode(*pinode, &fattr); | |
0e4bbde9 | 373 | } |
1da177e4 | 374 | |
1da177e4 LT |
375 | return rc; |
376 | } | |
377 | ||
0b8f18e3 JL |
378 | static int |
379 | cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, | |
6d5786a3 | 380 | struct cifs_sb_info *cifs_sb, unsigned int xid) |
d6e2f2a4 SF |
381 | { |
382 | int rc; | |
4b18f2a9 | 383 | int oplock = 0; |
d6e2f2a4 | 384 | __u16 netfid; |
7ffec372 | 385 | struct tcon_link *tlink; |
96daf2b0 | 386 | struct cifs_tcon *tcon; |
d4ffff1f | 387 | struct cifs_io_parms io_parms; |
86c96b4b | 388 | char buf[24]; |
d6e2f2a4 | 389 | unsigned int bytes_read; |
fb8c4b14 | 390 | char *pbuf; |
d6e2f2a4 SF |
391 | |
392 | pbuf = buf; | |
393 | ||
0b8f18e3 JL |
394 | fattr->cf_mode &= ~S_IFMT; |
395 | ||
396 | if (fattr->cf_eof == 0) { | |
397 | fattr->cf_mode |= S_IFIFO; | |
398 | fattr->cf_dtype = DT_FIFO; | |
d6e2f2a4 | 399 | return 0; |
0b8f18e3 JL |
400 | } else if (fattr->cf_eof < 8) { |
401 | fattr->cf_mode |= S_IFREG; | |
402 | fattr->cf_dtype = DT_REG; | |
d6e2f2a4 SF |
403 | return -EINVAL; /* EOPNOTSUPP? */ |
404 | } | |
50c2f753 | 405 | |
7ffec372 JL |
406 | tlink = cifs_sb_tlink(cifs_sb); |
407 | if (IS_ERR(tlink)) | |
408 | return PTR_ERR(tlink); | |
409 | tcon = tlink_tcon(tlink); | |
410 | ||
411 | rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ, | |
d6e2f2a4 SF |
412 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
413 | cifs_sb->local_nls, | |
414 | cifs_sb->mnt_cifs_flags & | |
415 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
fb8c4b14 | 416 | if (rc == 0) { |
ec637e3f | 417 | int buf_type = CIFS_NO_BUFFER; |
d6e2f2a4 | 418 | /* Read header */ |
d4ffff1f PS |
419 | io_parms.netfid = netfid; |
420 | io_parms.pid = current->tgid; | |
421 | io_parms.tcon = tcon; | |
422 | io_parms.offset = 0; | |
423 | io_parms.length = 24; | |
424 | rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, | |
425 | &buf_type); | |
4523cc30 SF |
426 | if ((rc == 0) && (bytes_read >= 8)) { |
427 | if (memcmp("IntxBLK", pbuf, 8) == 0) { | |
f96637be | 428 | cifs_dbg(FYI, "Block device\n"); |
0b8f18e3 JL |
429 | fattr->cf_mode |= S_IFBLK; |
430 | fattr->cf_dtype = DT_BLK; | |
4523cc30 | 431 | if (bytes_read == 24) { |
86c96b4b SF |
432 | /* we have enough to decode dev num */ |
433 | __u64 mjr; /* major */ | |
434 | __u64 mnr; /* minor */ | |
435 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); | |
436 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); | |
0b8f18e3 | 437 | fattr->cf_rdev = MKDEV(mjr, mnr); |
86c96b4b | 438 | } |
4523cc30 | 439 | } else if (memcmp("IntxCHR", pbuf, 8) == 0) { |
f96637be | 440 | cifs_dbg(FYI, "Char device\n"); |
0b8f18e3 JL |
441 | fattr->cf_mode |= S_IFCHR; |
442 | fattr->cf_dtype = DT_CHR; | |
4523cc30 | 443 | if (bytes_read == 24) { |
86c96b4b SF |
444 | /* we have enough to decode dev num */ |
445 | __u64 mjr; /* major */ | |
446 | __u64 mnr; /* minor */ | |
447 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); | |
448 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); | |
0b8f18e3 | 449 | fattr->cf_rdev = MKDEV(mjr, mnr); |
fb8c4b14 | 450 | } |
4523cc30 | 451 | } else if (memcmp("IntxLNK", pbuf, 7) == 0) { |
f96637be | 452 | cifs_dbg(FYI, "Symlink\n"); |
0b8f18e3 JL |
453 | fattr->cf_mode |= S_IFLNK; |
454 | fattr->cf_dtype = DT_LNK; | |
86c96b4b | 455 | } else { |
0b8f18e3 JL |
456 | fattr->cf_mode |= S_IFREG; /* file? */ |
457 | fattr->cf_dtype = DT_REG; | |
fb8c4b14 | 458 | rc = -EOPNOTSUPP; |
86c96b4b | 459 | } |
3020a1f5 | 460 | } else { |
0b8f18e3 JL |
461 | fattr->cf_mode |= S_IFREG; /* then it is a file */ |
462 | fattr->cf_dtype = DT_REG; | |
fb8c4b14 SF |
463 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
464 | } | |
7ffec372 | 465 | CIFSSMBClose(xid, tcon, netfid); |
d6e2f2a4 | 466 | } |
7ffec372 | 467 | cifs_put_tlink(tlink); |
d6e2f2a4 | 468 | return rc; |
d6e2f2a4 SF |
469 | } |
470 | ||
9e294f1c SF |
471 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
472 | ||
0b8f18e3 JL |
473 | /* |
474 | * Fetch mode bits as provided by SFU. | |
475 | * | |
476 | * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ? | |
477 | */ | |
478 | static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, | |
6d5786a3 | 479 | struct cifs_sb_info *cifs_sb, unsigned int xid) |
9e294f1c | 480 | { |
3020a1f5 | 481 | #ifdef CONFIG_CIFS_XATTR |
9e294f1c SF |
482 | ssize_t rc; |
483 | char ea_value[4]; | |
484 | __u32 mode; | |
7ffec372 | 485 | struct tcon_link *tlink; |
96daf2b0 | 486 | struct cifs_tcon *tcon; |
7ffec372 JL |
487 | |
488 | tlink = cifs_sb_tlink(cifs_sb); | |
489 | if (IS_ERR(tlink)) | |
490 | return PTR_ERR(tlink); | |
491 | tcon = tlink_tcon(tlink); | |
9e294f1c | 492 | |
367d9644 SF |
493 | if (tcon->ses->server->ops->query_all_EAs == NULL) { |
494 | cifs_put_tlink(tlink); | |
495 | return -EOPNOTSUPP; | |
496 | } | |
497 | ||
498 | rc = tcon->ses->server->ops->query_all_EAs(xid, tcon, path, | |
499 | "SETFILEBITS", ea_value, 4 /* size of buf */, | |
500 | cifs_sb->local_nls, | |
501 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 502 | cifs_put_tlink(tlink); |
4523cc30 | 503 | if (rc < 0) |
9e294f1c SF |
504 | return (int)rc; |
505 | else if (rc > 3) { | |
506 | mode = le32_to_cpu(*((__le32 *)ea_value)); | |
0b8f18e3 | 507 | fattr->cf_mode &= ~SFBITS_MASK; |
f96637be JP |
508 | cifs_dbg(FYI, "special bits 0%o org mode 0%o\n", |
509 | mode, fattr->cf_mode); | |
0b8f18e3 | 510 | fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode; |
f96637be | 511 | cifs_dbg(FYI, "special mode bits 0%o\n", mode); |
9e294f1c | 512 | } |
0b8f18e3 JL |
513 | |
514 | return 0; | |
3020a1f5 SF |
515 | #else |
516 | return -EOPNOTSUPP; | |
517 | #endif | |
9e294f1c SF |
518 | } |
519 | ||
0b8f18e3 | 520 | /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */ |
f1230c97 | 521 | static void |
0b8f18e3 JL |
522 | cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, |
523 | struct cifs_sb_info *cifs_sb, bool adjust_tz) | |
b9a3260f | 524 | { |
96daf2b0 | 525 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
0d424ad0 | 526 | |
0b8f18e3 JL |
527 | memset(fattr, 0, sizeof(*fattr)); |
528 | fattr->cf_cifsattrs = le32_to_cpu(info->Attributes); | |
529 | if (info->DeletePending) | |
530 | fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING; | |
531 | ||
532 | if (info->LastAccessTime) | |
533 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); | |
534 | else | |
535 | fattr->cf_atime = CURRENT_TIME; | |
536 | ||
537 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); | |
538 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); | |
539 | ||
540 | if (adjust_tz) { | |
0d424ad0 JL |
541 | fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; |
542 | fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; | |
0b8f18e3 JL |
543 | } |
544 | ||
545 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); | |
546 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); | |
20054bd6 | 547 | fattr->cf_createtime = le64_to_cpu(info->CreationTime); |
0b8f18e3 JL |
548 | |
549 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { | |
550 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; | |
551 | fattr->cf_dtype = DT_DIR; | |
6de2ce42 PS |
552 | /* |
553 | * Server can return wrong NumberOfLinks value for directories | |
554 | * when Unix extensions are disabled - fake it. | |
555 | */ | |
556 | fattr->cf_nlink = 2; | |
0b8f18e3 JL |
557 | } else { |
558 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; | |
559 | fattr->cf_dtype = DT_REG; | |
0b8f18e3 | 560 | |
d0c280d2 JL |
561 | /* clear write bits if ATTR_READONLY is set */ |
562 | if (fattr->cf_cifsattrs & ATTR_READONLY) | |
563 | fattr->cf_mode &= ~(S_IWUGO); | |
0b8f18e3 | 564 | |
6de2ce42 | 565 | fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); |
cfe24e4e SF |
566 | if (fattr->cf_nlink < 1) { |
567 | cifs_dbg(1, "replacing bogus file nlink value %u\n", | |
568 | fattr->cf_nlink); | |
569 | fattr->cf_nlink = 1; | |
570 | } | |
6de2ce42 | 571 | } |
0b8f18e3 JL |
572 | |
573 | fattr->cf_uid = cifs_sb->mnt_uid; | |
574 | fattr->cf_gid = cifs_sb->mnt_gid; | |
b9a3260f SF |
575 | } |
576 | ||
4ad65044 PS |
577 | static int |
578 | cifs_get_file_info(struct file *filp) | |
abab095d JL |
579 | { |
580 | int rc; | |
6d5786a3 | 581 | unsigned int xid; |
abab095d JL |
582 | FILE_ALL_INFO find_data; |
583 | struct cifs_fattr fattr; | |
496ad9aa | 584 | struct inode *inode = file_inode(filp); |
abab095d | 585 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
c21dfb69 | 586 | struct cifsFileInfo *cfile = filp->private_data; |
96daf2b0 | 587 | struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); |
4ad65044 PS |
588 | struct TCP_Server_Info *server = tcon->ses->server; |
589 | ||
590 | if (!server->ops->query_file_info) | |
591 | return -ENOSYS; | |
abab095d | 592 | |
6d5786a3 | 593 | xid = get_xid(); |
4ad65044 | 594 | rc = server->ops->query_file_info(xid, tcon, &cfile->fid, &find_data); |
42274bb2 PS |
595 | switch (rc) { |
596 | case 0: | |
597 | cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false); | |
598 | break; | |
599 | case -EREMOTE: | |
600 | cifs_create_dfs_fattr(&fattr, inode->i_sb); | |
601 | rc = 0; | |
602 | break; | |
603 | case -EOPNOTSUPP: | |
604 | case -EINVAL: | |
abab095d JL |
605 | /* |
606 | * FIXME: legacy server -- fall back to path-based call? | |
ff215713 SF |
607 | * for now, just skip revalidating and mark inode for |
608 | * immediate reval. | |
609 | */ | |
abab095d JL |
610 | rc = 0; |
611 | CIFS_I(inode)->time = 0; | |
42274bb2 | 612 | default: |
abab095d | 613 | goto cgfi_exit; |
42274bb2 | 614 | } |
abab095d JL |
615 | |
616 | /* | |
617 | * don't bother with SFU junk here -- just mark inode as needing | |
618 | * revalidation. | |
619 | */ | |
abab095d JL |
620 | fattr.cf_uniqueid = CIFS_I(inode)->uniqueid; |
621 | fattr.cf_flags |= CIFS_FATTR_NEED_REVAL; | |
622 | cifs_fattr_to_inode(inode, &fattr); | |
623 | cgfi_exit: | |
6d5786a3 | 624 | free_xid(xid); |
abab095d JL |
625 | return rc; |
626 | } | |
627 | ||
1208ef1f PS |
628 | int |
629 | cifs_get_inode_info(struct inode **inode, const char *full_path, | |
630 | FILE_ALL_INFO *data, struct super_block *sb, int xid, | |
631 | const __u16 *fid) | |
1da177e4 | 632 | { |
c052e2b4 SP |
633 | bool validinum = false; |
634 | __u16 srchflgs; | |
635 | int rc = 0, tmprc = ENOSYS; | |
1208ef1f PS |
636 | struct cifs_tcon *tcon; |
637 | struct TCP_Server_Info *server; | |
7ffec372 | 638 | struct tcon_link *tlink; |
1da177e4 | 639 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
1da177e4 | 640 | char *buf = NULL; |
1208ef1f | 641 | bool adjust_tz = false; |
0b8f18e3 | 642 | struct cifs_fattr fattr; |
c052e2b4 | 643 | struct cifs_search_info *srchinf = NULL; |
1da177e4 | 644 | |
7ffec372 JL |
645 | tlink = cifs_sb_tlink(cifs_sb); |
646 | if (IS_ERR(tlink)) | |
647 | return PTR_ERR(tlink); | |
1208ef1f PS |
648 | tcon = tlink_tcon(tlink); |
649 | server = tcon->ses->server; | |
7ffec372 | 650 | |
f96637be | 651 | cifs_dbg(FYI, "Getting info on %s\n", full_path); |
1da177e4 | 652 | |
1208ef1f PS |
653 | if ((data == NULL) && (*inode != NULL)) { |
654 | if (CIFS_I(*inode)->clientCanCacheRead) { | |
f96637be | 655 | cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); |
7ffec372 | 656 | goto cgii_exit; |
1da177e4 LT |
657 | } |
658 | } | |
659 | ||
1208ef1f PS |
660 | /* if inode info is not passed, get it from server */ |
661 | if (data == NULL) { | |
662 | if (!server->ops->query_path_info) { | |
663 | rc = -ENOSYS; | |
664 | goto cgii_exit; | |
665 | } | |
1da177e4 | 666 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
7ffec372 JL |
667 | if (buf == NULL) { |
668 | rc = -ENOMEM; | |
669 | goto cgii_exit; | |
670 | } | |
1208ef1f PS |
671 | data = (FILE_ALL_INFO *)buf; |
672 | rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path, | |
673 | data, &adjust_tz); | |
1da177e4 | 674 | } |
0b8f18e3 JL |
675 | |
676 | if (!rc) { | |
1208ef1f PS |
677 | cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *)data, cifs_sb, |
678 | adjust_tz); | |
0b8f18e3 JL |
679 | } else if (rc == -EREMOTE) { |
680 | cifs_create_dfs_fattr(&fattr, sb); | |
b9a3260f | 681 | rc = 0; |
c052e2b4 SP |
682 | } else if (rc == -EACCES && backup_cred(cifs_sb)) { |
683 | srchinf = kzalloc(sizeof(struct cifs_search_info), | |
684 | GFP_KERNEL); | |
685 | if (srchinf == NULL) { | |
686 | rc = -ENOMEM; | |
687 | goto cgii_exit; | |
688 | } | |
689 | ||
690 | srchinf->endOfSearch = false; | |
691 | srchinf->info_level = SMB_FIND_FILE_ID_FULL_DIR_INFO; | |
692 | ||
693 | srchflgs = CIFS_SEARCH_CLOSE_ALWAYS | | |
694 | CIFS_SEARCH_CLOSE_AT_END | | |
695 | CIFS_SEARCH_BACKUP_SEARCH; | |
696 | ||
697 | rc = CIFSFindFirst(xid, tcon, full_path, | |
698 | cifs_sb, NULL, srchflgs, srchinf, false); | |
699 | if (!rc) { | |
700 | data = | |
701 | (FILE_ALL_INFO *)srchinf->srch_entries_start; | |
702 | ||
703 | cifs_dir_info_to_fattr(&fattr, | |
704 | (FILE_DIRECTORY_INFO *)data, cifs_sb); | |
705 | fattr.cf_uniqueid = le64_to_cpu( | |
706 | ((SEARCH_ID_FULL_DIR_INFO *)data)->UniqueId); | |
707 | validinum = true; | |
708 | ||
709 | cifs_buf_release(srchinf->ntwrk_buf_start); | |
710 | } | |
711 | kfree(srchinf); | |
712 | } else | |
7962670e | 713 | goto cgii_exit; |
1da177e4 | 714 | |
0b8f18e3 JL |
715 | /* |
716 | * If an inode wasn't passed in, then get the inode number | |
717 | * | |
718 | * Is an i_ino of zero legal? Can we use that to check if the server | |
719 | * supports returning inode numbers? Are there other sanity checks we | |
720 | * can use to ensure that the server is really filling in that field? | |
0b8f18e3 | 721 | */ |
1208ef1f | 722 | if (*inode == NULL) { |
b9a3260f | 723 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
c052e2b4 SP |
724 | if (validinum == false) { |
725 | if (server->ops->get_srv_inum) | |
726 | tmprc = server->ops->get_srv_inum(xid, | |
727 | tcon, cifs_sb, full_path, | |
728 | &fattr.cf_uniqueid, data); | |
729 | if (tmprc) { | |
f96637be JP |
730 | cifs_dbg(FYI, "GetSrvInodeNum rc %d\n", |
731 | tmprc); | |
c052e2b4 SP |
732 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
733 | cifs_autodisable_serverino(cifs_sb); | |
734 | } | |
132ac7b7 | 735 | } |
c052e2b4 | 736 | } else |
0b8f18e3 | 737 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
c052e2b4 | 738 | } else |
1208ef1f | 739 | fattr.cf_uniqueid = CIFS_I(*inode)->uniqueid; |
b9a3260f | 740 | |
0b8f18e3 JL |
741 | /* query for SFU type info if supported and needed */ |
742 | if (fattr.cf_cifsattrs & ATTR_SYSTEM && | |
743 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { | |
744 | tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); | |
745 | if (tmprc) | |
f96637be | 746 | cifs_dbg(FYI, "cifs_sfu_type failed: %d\n", tmprc); |
b9a3260f | 747 | } |
1da177e4 | 748 | |
79df1bae | 749 | #ifdef CONFIG_CIFS_ACL |
b9a3260f SF |
750 | /* fill in 0777 bits from ACL */ |
751 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { | |
1208ef1f | 752 | rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, full_path, fid); |
78415d2d | 753 | if (rc) { |
f96637be JP |
754 | cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n", |
755 | __func__, rc); | |
78415d2d SP |
756 | goto cgii_exit; |
757 | } | |
b9a3260f | 758 | } |
79df1bae | 759 | #endif /* CONFIG_CIFS_ACL */ |
b9a3260f | 760 | |
0b8f18e3 JL |
761 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
762 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) | |
763 | cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); | |
b9a3260f | 764 | |
1b12b9c1 SM |
765 | /* check for Minshall+French symlinks */ |
766 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { | |
767 | tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); | |
768 | if (tmprc) | |
f96637be | 769 | cifs_dbg(FYI, "CIFSCheckMFSymlink: %d\n", tmprc); |
1b12b9c1 SM |
770 | } |
771 | ||
1208ef1f PS |
772 | if (!*inode) { |
773 | *inode = cifs_iget(sb, &fattr); | |
774 | if (!*inode) | |
0b8f18e3 JL |
775 | rc = -ENOMEM; |
776 | } else { | |
1208ef1f | 777 | cifs_fattr_to_inode(*inode, &fattr); |
0b8f18e3 | 778 | } |
b9a3260f | 779 | |
7962670e | 780 | cgii_exit: |
1da177e4 | 781 | kfree(buf); |
7ffec372 | 782 | cifs_put_tlink(tlink); |
1da177e4 LT |
783 | return rc; |
784 | } | |
785 | ||
7f8ed420 SF |
786 | static const struct inode_operations cifs_ipc_inode_ops = { |
787 | .lookup = cifs_lookup, | |
788 | }; | |
789 | ||
cc0bad75 JL |
790 | static int |
791 | cifs_find_inode(struct inode *inode, void *opaque) | |
792 | { | |
793 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; | |
794 | ||
f30b9c11 | 795 | /* don't match inode with different uniqueid */ |
cc0bad75 JL |
796 | if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid) |
797 | return 0; | |
798 | ||
20054bd6 JL |
799 | /* use createtime like an i_generation field */ |
800 | if (CIFS_I(inode)->createtime != fattr->cf_createtime) | |
801 | return 0; | |
802 | ||
f30b9c11 JL |
803 | /* don't match inode of different type */ |
804 | if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT)) | |
805 | return 0; | |
806 | ||
5acfec25 | 807 | /* if it's not a directory or has no dentries, then flag it */ |
b3d9b7a3 | 808 | if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry)) |
3d694380 | 809 | fattr->cf_flags |= CIFS_FATTR_INO_COLLISION; |
3d694380 | 810 | |
cc0bad75 JL |
811 | return 1; |
812 | } | |
813 | ||
814 | static int | |
815 | cifs_init_inode(struct inode *inode, void *opaque) | |
816 | { | |
817 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; | |
818 | ||
819 | CIFS_I(inode)->uniqueid = fattr->cf_uniqueid; | |
20054bd6 | 820 | CIFS_I(inode)->createtime = fattr->cf_createtime; |
cc0bad75 JL |
821 | return 0; |
822 | } | |
823 | ||
5acfec25 JL |
824 | /* |
825 | * walk dentry list for an inode and report whether it has aliases that | |
826 | * are hashed. We use this to determine if a directory inode can actually | |
827 | * be used. | |
828 | */ | |
829 | static bool | |
830 | inode_has_hashed_dentries(struct inode *inode) | |
831 | { | |
832 | struct dentry *dentry; | |
833 | ||
873feea0 | 834 | spin_lock(&inode->i_lock); |
6637ecd3 | 835 | hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) { |
5acfec25 | 836 | if (!d_unhashed(dentry) || IS_ROOT(dentry)) { |
873feea0 | 837 | spin_unlock(&inode->i_lock); |
5acfec25 JL |
838 | return true; |
839 | } | |
840 | } | |
873feea0 | 841 | spin_unlock(&inode->i_lock); |
5acfec25 JL |
842 | return false; |
843 | } | |
844 | ||
cc0bad75 JL |
845 | /* Given fattrs, get a corresponding inode */ |
846 | struct inode * | |
847 | cifs_iget(struct super_block *sb, struct cifs_fattr *fattr) | |
848 | { | |
849 | unsigned long hash; | |
850 | struct inode *inode; | |
851 | ||
3d694380 | 852 | retry_iget5_locked: |
f96637be | 853 | cifs_dbg(FYI, "looking for uniqueid=%llu\n", fattr->cf_uniqueid); |
cc0bad75 JL |
854 | |
855 | /* hash down to 32-bits on 32-bit arch */ | |
856 | hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid); | |
857 | ||
858 | inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr); | |
cc0bad75 | 859 | if (inode) { |
5acfec25 | 860 | /* was there a potentially problematic inode collision? */ |
3d694380 | 861 | if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) { |
3d694380 | 862 | fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION; |
5acfec25 JL |
863 | |
864 | if (inode_has_hashed_dentries(inode)) { | |
865 | cifs_autodisable_serverino(CIFS_SB(sb)); | |
866 | iput(inode); | |
867 | fattr->cf_uniqueid = iunique(sb, ROOT_I); | |
868 | goto retry_iget5_locked; | |
869 | } | |
3d694380 JL |
870 | } |
871 | ||
cc0bad75 JL |
872 | cifs_fattr_to_inode(inode, fattr); |
873 | if (sb->s_flags & MS_NOATIME) | |
874 | inode->i_flags |= S_NOATIME | S_NOCMTIME; | |
875 | if (inode->i_state & I_NEW) { | |
876 | inode->i_ino = hash; | |
522440ed JL |
877 | if (S_ISREG(inode->i_mode)) |
878 | inode->i_data.backing_dev_info = sb->s_bdi; | |
0ccd4802 | 879 | #ifdef CONFIG_CIFS_FSCACHE |
9451a9a5 SJ |
880 | /* initialize per-inode cache cookie pointer */ |
881 | CIFS_I(inode)->fscache = NULL; | |
0ccd4802 | 882 | #endif |
cc0bad75 JL |
883 | unlock_new_inode(inode); |
884 | } | |
885 | } | |
886 | ||
887 | return inode; | |
888 | } | |
889 | ||
1da177e4 | 890 | /* gets root inode */ |
9b6763e0 | 891 | struct inode *cifs_root_iget(struct super_block *sb) |
1da177e4 | 892 | { |
6d5786a3 | 893 | unsigned int xid; |
0d424ad0 | 894 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
cc0bad75 | 895 | struct inode *inode = NULL; |
ce634ab2 | 896 | long rc; |
96daf2b0 | 897 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
a9baa441 AA |
898 | char *path = NULL; |
899 | int len; | |
900 | ||
901 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) | |
902 | && cifs_sb->prepath) { | |
903 | len = strlen(cifs_sb->prepath); | |
904 | path = kzalloc(len + 2 /* leading sep + null */, GFP_KERNEL); | |
905 | if (path == NULL) | |
906 | return ERR_PTR(-ENOMEM); | |
907 | path[0] = '/'; | |
908 | memcpy(path+1, cifs_sb->prepath, len); | |
909 | } else { | |
910 | path = kstrdup("", GFP_KERNEL); | |
911 | if (path == NULL) | |
912 | return ERR_PTR(-ENOMEM); | |
913 | } | |
ce634ab2 | 914 | |
6d5786a3 | 915 | xid = get_xid(); |
a9baa441 | 916 | convert_delimiter(path, CIFS_DIR_SEP(cifs_sb)); |
0d424ad0 | 917 | if (tcon->unix_ext) |
a9baa441 | 918 | rc = cifs_get_inode_info_unix(&inode, path, sb, xid); |
0b8f18e3 | 919 | else |
a9baa441 | 920 | rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL); |
0b8f18e3 | 921 | |
a7851ce7 OS |
922 | if (!inode) { |
923 | inode = ERR_PTR(rc); | |
924 | goto out; | |
925 | } | |
cc0bad75 | 926 | |
0ccd4802 | 927 | #ifdef CONFIG_CIFS_FSCACHE |
d03382ce | 928 | /* populate tcon->resource_id */ |
0d424ad0 | 929 | tcon->resource_id = CIFS_I(inode)->uniqueid; |
0ccd4802 | 930 | #endif |
d03382ce | 931 | |
0d424ad0 | 932 | if (rc && tcon->ipc) { |
f96637be | 933 | cifs_dbg(FYI, "ipc connection - fake read inode\n"); |
b7ca6928 | 934 | spin_lock(&inode->i_lock); |
7f8ed420 | 935 | inode->i_mode |= S_IFDIR; |
bfe86848 | 936 | set_nlink(inode, 2); |
7f8ed420 SF |
937 | inode->i_op = &cifs_ipc_inode_ops; |
938 | inode->i_fop = &simple_dir_operations; | |
939 | inode->i_uid = cifs_sb->mnt_uid; | |
940 | inode->i_gid = cifs_sb->mnt_gid; | |
b7ca6928 | 941 | spin_unlock(&inode->i_lock); |
ad661334 | 942 | } else if (rc) { |
ce634ab2 | 943 | iget_failed(inode); |
a7851ce7 | 944 | inode = ERR_PTR(rc); |
7f8ed420 SF |
945 | } |
946 | ||
a7851ce7 | 947 | out: |
a9baa441 | 948 | kfree(path); |
6d5786a3 | 949 | /* can not call macro free_xid here since in a void func |
ce634ab2 DH |
950 | * TODO: This is no longer true |
951 | */ | |
6d5786a3 | 952 | _free_xid(xid); |
ce634ab2 | 953 | return inode; |
1da177e4 LT |
954 | } |
955 | ||
ed6875e0 | 956 | int |
6d5786a3 | 957 | cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid, |
ed6875e0 | 958 | char *full_path, __u32 dosattr) |
388e57b2 | 959 | { |
388e57b2 | 960 | bool set_time = false; |
388e57b2 | 961 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
6bdf6dbd | 962 | struct TCP_Server_Info *server; |
388e57b2 SF |
963 | FILE_BASIC_INFO info_buf; |
964 | ||
1adcb710 SF |
965 | if (attrs == NULL) |
966 | return -EINVAL; | |
967 | ||
6bdf6dbd PS |
968 | server = cifs_sb_master_tcon(cifs_sb)->ses->server; |
969 | if (!server->ops->set_file_info) | |
970 | return -ENOSYS; | |
971 | ||
388e57b2 SF |
972 | if (attrs->ia_valid & ATTR_ATIME) { |
973 | set_time = true; | |
974 | info_buf.LastAccessTime = | |
975 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); | |
976 | } else | |
977 | info_buf.LastAccessTime = 0; | |
978 | ||
979 | if (attrs->ia_valid & ATTR_MTIME) { | |
980 | set_time = true; | |
981 | info_buf.LastWriteTime = | |
982 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); | |
983 | } else | |
984 | info_buf.LastWriteTime = 0; | |
985 | ||
986 | /* | |
987 | * Samba throws this field away, but windows may actually use it. | |
988 | * Do not set ctime unless other time stamps are changed explicitly | |
989 | * (i.e. by utimes()) since we would then have a mix of client and | |
990 | * server times. | |
991 | */ | |
992 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { | |
f96637be | 993 | cifs_dbg(FYI, "CIFS - CTIME changed\n"); |
388e57b2 SF |
994 | info_buf.ChangeTime = |
995 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); | |
996 | } else | |
997 | info_buf.ChangeTime = 0; | |
998 | ||
999 | info_buf.CreationTime = 0; /* don't change */ | |
1000 | info_buf.Attributes = cpu_to_le32(dosattr); | |
1001 | ||
6bdf6dbd | 1002 | return server->ops->set_file_info(inode, full_path, &info_buf, xid); |
388e57b2 SF |
1003 | } |
1004 | ||
a12a1ac7 | 1005 | /* |
ed6875e0 | 1006 | * Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit |
a12a1ac7 JL |
1007 | * and rename it to a random name that hopefully won't conflict with |
1008 | * anything else. | |
1009 | */ | |
ed6875e0 PS |
1010 | int |
1011 | cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, | |
1012 | const unsigned int xid) | |
a12a1ac7 JL |
1013 | { |
1014 | int oplock = 0; | |
1015 | int rc; | |
1016 | __u16 netfid; | |
3270958b | 1017 | struct inode *inode = dentry->d_inode; |
a12a1ac7 JL |
1018 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
1019 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1020 | struct tcon_link *tlink; |
96daf2b0 | 1021 | struct cifs_tcon *tcon; |
3270958b SF |
1022 | __u32 dosattr, origattr; |
1023 | FILE_BASIC_INFO *info_buf = NULL; | |
a12a1ac7 | 1024 | |
7ffec372 JL |
1025 | tlink = cifs_sb_tlink(cifs_sb); |
1026 | if (IS_ERR(tlink)) | |
1027 | return PTR_ERR(tlink); | |
1028 | tcon = tlink_tcon(tlink); | |
1029 | ||
c483a984 SP |
1030 | /* |
1031 | * We cannot rename the file if the server doesn't support | |
1032 | * CAP_INFOLEVEL_PASSTHRU | |
1033 | */ | |
1034 | if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) { | |
1035 | rc = -EBUSY; | |
1036 | goto out; | |
1037 | } | |
1038 | ||
a12a1ac7 | 1039 | rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, |
dd1db2de | 1040 | DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, |
a12a1ac7 JL |
1041 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
1042 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1043 | if (rc != 0) | |
1044 | goto out; | |
1045 | ||
3270958b SF |
1046 | origattr = cifsInode->cifsAttrs; |
1047 | if (origattr == 0) | |
1048 | origattr |= ATTR_NORMAL; | |
1049 | ||
1050 | dosattr = origattr & ~ATTR_READONLY; | |
a12a1ac7 JL |
1051 | if (dosattr == 0) |
1052 | dosattr |= ATTR_NORMAL; | |
1053 | dosattr |= ATTR_HIDDEN; | |
1054 | ||
3270958b SF |
1055 | /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */ |
1056 | if (dosattr != origattr) { | |
1057 | info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL); | |
1058 | if (info_buf == NULL) { | |
1059 | rc = -ENOMEM; | |
1060 | goto out_close; | |
1061 | } | |
1062 | info_buf->Attributes = cpu_to_le32(dosattr); | |
1063 | rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, | |
1064 | current->tgid); | |
1065 | /* although we would like to mark the file hidden | |
1066 | if that fails we will still try to rename it */ | |
72d282dc | 1067 | if (!rc) |
3270958b SF |
1068 | cifsInode->cifsAttrs = dosattr; |
1069 | else | |
1070 | dosattr = origattr; /* since not able to change them */ | |
a12a1ac7 | 1071 | } |
a12a1ac7 | 1072 | |
dd1db2de JL |
1073 | /* rename the file */ |
1074 | rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls, | |
a12a1ac7 JL |
1075 | cifs_sb->mnt_cifs_flags & |
1076 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
3270958b | 1077 | if (rc != 0) { |
47c78f4a | 1078 | rc = -EBUSY; |
3270958b SF |
1079 | goto undo_setattr; |
1080 | } | |
6d22f098 | 1081 | |
3270958b SF |
1082 | /* try to set DELETE_ON_CLOSE */ |
1083 | if (!cifsInode->delete_pending) { | |
1084 | rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, | |
1085 | current->tgid); | |
1086 | /* | |
1087 | * some samba versions return -ENOENT when we try to set the | |
1088 | * file disposition here. Likely a samba bug, but work around | |
1089 | * it for now. This means that some cifsXXX files may hang | |
1090 | * around after they shouldn't. | |
1091 | * | |
1092 | * BB: remove this hack after more servers have the fix | |
1093 | */ | |
1094 | if (rc == -ENOENT) | |
1095 | rc = 0; | |
1096 | else if (rc != 0) { | |
47c78f4a | 1097 | rc = -EBUSY; |
3270958b SF |
1098 | goto undo_rename; |
1099 | } | |
1100 | cifsInode->delete_pending = true; | |
1101 | } | |
7ce86d5a | 1102 | |
a12a1ac7 JL |
1103 | out_close: |
1104 | CIFSSMBClose(xid, tcon, netfid); | |
1105 | out: | |
3270958b | 1106 | kfree(info_buf); |
7ffec372 | 1107 | cifs_put_tlink(tlink); |
a12a1ac7 | 1108 | return rc; |
3270958b SF |
1109 | |
1110 | /* | |
1111 | * reset everything back to the original state. Don't bother | |
1112 | * dealing with errors here since we can't do anything about | |
1113 | * them anyway. | |
1114 | */ | |
1115 | undo_rename: | |
1116 | CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name, | |
1117 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1118 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1119 | undo_setattr: | |
1120 | if (dosattr != origattr) { | |
1121 | info_buf->Attributes = cpu_to_le32(origattr); | |
1122 | if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, | |
1123 | current->tgid)) | |
1124 | cifsInode->cifsAttrs = origattr; | |
1125 | } | |
1126 | ||
1127 | goto out_close; | |
a12a1ac7 JL |
1128 | } |
1129 | ||
b7ca6928 SF |
1130 | /* copied from fs/nfs/dir.c with small changes */ |
1131 | static void | |
1132 | cifs_drop_nlink(struct inode *inode) | |
1133 | { | |
1134 | spin_lock(&inode->i_lock); | |
1135 | if (inode->i_nlink > 0) | |
1136 | drop_nlink(inode); | |
1137 | spin_unlock(&inode->i_lock); | |
1138 | } | |
ff694527 SF |
1139 | |
1140 | /* | |
1141 | * If dentry->d_inode is null (usually meaning the cached dentry | |
1142 | * is a negative dentry) then we would attempt a standard SMB delete, but | |
af901ca1 AGR |
1143 | * if that fails we can not attempt the fall back mechanisms on EACCESS |
1144 | * but will return the EACCESS to the caller. Note that the VFS does not call | |
ff694527 SF |
1145 | * unlink on negative dentries currently. |
1146 | */ | |
5f0319a7 | 1147 | int cifs_unlink(struct inode *dir, struct dentry *dentry) |
1da177e4 LT |
1148 | { |
1149 | int rc = 0; | |
6d5786a3 | 1150 | unsigned int xid; |
1da177e4 | 1151 | char *full_path = NULL; |
5f0319a7 | 1152 | struct inode *inode = dentry->d_inode; |
ff694527 | 1153 | struct cifsInodeInfo *cifs_inode; |
5f0319a7 JL |
1154 | struct super_block *sb = dir->i_sb; |
1155 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); | |
7ffec372 | 1156 | struct tcon_link *tlink; |
96daf2b0 | 1157 | struct cifs_tcon *tcon; |
ed6875e0 | 1158 | struct TCP_Server_Info *server; |
6050247d SF |
1159 | struct iattr *attrs = NULL; |
1160 | __u32 dosattr = 0, origattr = 0; | |
1da177e4 | 1161 | |
f96637be | 1162 | cifs_dbg(FYI, "cifs_unlink, dir=0x%p, dentry=0x%p\n", dir, dentry); |
1da177e4 | 1163 | |
7ffec372 JL |
1164 | tlink = cifs_sb_tlink(cifs_sb); |
1165 | if (IS_ERR(tlink)) | |
1166 | return PTR_ERR(tlink); | |
1167 | tcon = tlink_tcon(tlink); | |
ed6875e0 | 1168 | server = tcon->ses->server; |
7ffec372 | 1169 | |
6d5786a3 | 1170 | xid = get_xid(); |
1da177e4 | 1171 | |
5f0319a7 JL |
1172 | /* Unlink can be called from rename so we can not take the |
1173 | * sb->s_vfs_rename_mutex here */ | |
1174 | full_path = build_path_from_dentry(dentry); | |
1da177e4 | 1175 | if (full_path == NULL) { |
0f3bc09e | 1176 | rc = -ENOMEM; |
7ffec372 | 1177 | goto unlink_out; |
1da177e4 | 1178 | } |
2d785a50 | 1179 | |
29e20f9c PS |
1180 | if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
1181 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { | |
5f0319a7 | 1182 | rc = CIFSPOSIXDelFile(xid, tcon, full_path, |
2d785a50 | 1183 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
737b758c | 1184 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
f96637be | 1185 | cifs_dbg(FYI, "posix del rc %d\n", rc); |
2d785a50 SF |
1186 | if ((rc == 0) || (rc == -ENOENT)) |
1187 | goto psx_del_no_retry; | |
1188 | } | |
1da177e4 | 1189 | |
6050247d | 1190 | retry_std_delete: |
ed6875e0 PS |
1191 | if (!server->ops->unlink) { |
1192 | rc = -ENOSYS; | |
1193 | goto psx_del_no_retry; | |
1194 | } | |
1195 | ||
1196 | rc = server->ops->unlink(xid, tcon, full_path, cifs_sb); | |
6050247d | 1197 | |
2d785a50 | 1198 | psx_del_no_retry: |
1da177e4 | 1199 | if (!rc) { |
5f0319a7 | 1200 | if (inode) |
b7ca6928 | 1201 | cifs_drop_nlink(inode); |
1da177e4 | 1202 | } else if (rc == -ENOENT) { |
5f0319a7 | 1203 | d_drop(dentry); |
47c78f4a | 1204 | } else if (rc == -EBUSY) { |
ed6875e0 PS |
1205 | if (server->ops->rename_pending_delete) { |
1206 | rc = server->ops->rename_pending_delete(full_path, | |
1207 | dentry, xid); | |
1208 | if (rc == 0) | |
1209 | cifs_drop_nlink(inode); | |
1210 | } | |
ff694527 | 1211 | } else if ((rc == -EACCES) && (dosattr == 0) && inode) { |
388e57b2 SF |
1212 | attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); |
1213 | if (attrs == NULL) { | |
1214 | rc = -ENOMEM; | |
1215 | goto out_reval; | |
1da177e4 | 1216 | } |
388e57b2 SF |
1217 | |
1218 | /* try to reset dos attributes */ | |
ff694527 SF |
1219 | cifs_inode = CIFS_I(inode); |
1220 | origattr = cifs_inode->cifsAttrs; | |
6050247d SF |
1221 | if (origattr == 0) |
1222 | origattr |= ATTR_NORMAL; | |
1223 | dosattr = origattr & ~ATTR_READONLY; | |
388e57b2 SF |
1224 | if (dosattr == 0) |
1225 | dosattr |= ATTR_NORMAL; | |
1226 | dosattr |= ATTR_HIDDEN; | |
1227 | ||
1228 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); | |
388e57b2 SF |
1229 | if (rc != 0) |
1230 | goto out_reval; | |
6050247d SF |
1231 | |
1232 | goto retry_std_delete; | |
1da177e4 | 1233 | } |
6050247d SF |
1234 | |
1235 | /* undo the setattr if we errored out and it's needed */ | |
1236 | if (rc != 0 && dosattr != 0) | |
1237 | cifs_set_file_info(inode, attrs, xid, full_path, origattr); | |
1238 | ||
388e57b2 | 1239 | out_reval: |
4523cc30 | 1240 | if (inode) { |
ff694527 SF |
1241 | cifs_inode = CIFS_I(inode); |
1242 | cifs_inode->time = 0; /* will force revalidate to get info | |
5f0319a7 JL |
1243 | when needed */ |
1244 | inode->i_ctime = current_fs_time(sb); | |
06bcfedd | 1245 | } |
5f0319a7 | 1246 | dir->i_ctime = dir->i_mtime = current_fs_time(sb); |
ff694527 | 1247 | cifs_inode = CIFS_I(dir); |
6050247d | 1248 | CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ |
7ffec372 | 1249 | unlink_out: |
1da177e4 | 1250 | kfree(full_path); |
6050247d | 1251 | kfree(attrs); |
6d5786a3 | 1252 | free_xid(xid); |
7ffec372 | 1253 | cifs_put_tlink(tlink); |
1da177e4 LT |
1254 | return rc; |
1255 | } | |
1256 | ||
ff691e96 | 1257 | static int |
101b92d9 | 1258 | cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode, |
ff691e96 PS |
1259 | const char *full_path, struct cifs_sb_info *cifs_sb, |
1260 | struct cifs_tcon *tcon, const unsigned int xid) | |
1261 | { | |
1262 | int rc = 0; | |
101b92d9 | 1263 | struct inode *inode = NULL; |
ff691e96 PS |
1264 | |
1265 | if (tcon->unix_ext) | |
101b92d9 | 1266 | rc = cifs_get_inode_info_unix(&inode, full_path, parent->i_sb, |
ff691e96 PS |
1267 | xid); |
1268 | else | |
101b92d9 JL |
1269 | rc = cifs_get_inode_info(&inode, full_path, NULL, parent->i_sb, |
1270 | xid, NULL); | |
1271 | ||
ff691e96 PS |
1272 | if (rc) |
1273 | return rc; | |
1274 | ||
ff691e96 PS |
1275 | /* |
1276 | * setting nlink not necessary except in cases where we failed to get it | |
101b92d9 JL |
1277 | * from the server or was set bogus. Also, since this is a brand new |
1278 | * inode, no need to grab the i_lock before setting the i_nlink. | |
ff691e96 | 1279 | */ |
101b92d9 JL |
1280 | if (inode->i_nlink < 2) |
1281 | set_nlink(inode, 2); | |
ff691e96 PS |
1282 | mode &= ~current_umask(); |
1283 | /* must turn on setgid bit if parent dir has it */ | |
101b92d9 | 1284 | if (parent->i_mode & S_ISGID) |
ff691e96 PS |
1285 | mode |= S_ISGID; |
1286 | ||
1287 | if (tcon->unix_ext) { | |
1288 | struct cifs_unix_set_info_args args = { | |
1289 | .mode = mode, | |
1290 | .ctime = NO_CHANGE_64, | |
1291 | .atime = NO_CHANGE_64, | |
1292 | .mtime = NO_CHANGE_64, | |
1293 | .device = 0, | |
1294 | }; | |
1295 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { | |
49418b2c | 1296 | args.uid = current_fsuid(); |
101b92d9 | 1297 | if (parent->i_mode & S_ISGID) |
49418b2c | 1298 | args.gid = parent->i_gid; |
ff691e96 | 1299 | else |
49418b2c | 1300 | args.gid = current_fsgid(); |
ff691e96 | 1301 | } else { |
49418b2c EB |
1302 | args.uid = INVALID_UID; /* no change */ |
1303 | args.gid = INVALID_GID; /* no change */ | |
ff691e96 PS |
1304 | } |
1305 | CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args, | |
1306 | cifs_sb->local_nls, | |
1307 | cifs_sb->mnt_cifs_flags & | |
1308 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1309 | } else { | |
f436720e | 1310 | struct TCP_Server_Info *server = tcon->ses->server; |
ff691e96 | 1311 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
f436720e | 1312 | (mode & S_IWUGO) == 0 && server->ops->mkdir_setinfo) |
101b92d9 | 1313 | server->ops->mkdir_setinfo(inode, full_path, cifs_sb, |
f436720e | 1314 | tcon, xid); |
101b92d9 JL |
1315 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) |
1316 | inode->i_mode = (mode | S_IFDIR); | |
1317 | ||
1318 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { | |
1319 | inode->i_uid = current_fsuid(); | |
1320 | if (inode->i_mode & S_ISGID) | |
1321 | inode->i_gid = parent->i_gid; | |
1322 | else | |
1323 | inode->i_gid = current_fsgid(); | |
ff691e96 PS |
1324 | } |
1325 | } | |
101b92d9 | 1326 | d_instantiate(dentry, inode); |
ff691e96 PS |
1327 | return rc; |
1328 | } | |
1329 | ||
1330 | static int | |
1331 | cifs_posix_mkdir(struct inode *inode, struct dentry *dentry, umode_t mode, | |
1332 | const char *full_path, struct cifs_sb_info *cifs_sb, | |
1333 | struct cifs_tcon *tcon, const unsigned int xid) | |
1334 | { | |
1335 | int rc = 0; | |
1336 | u32 oplock = 0; | |
1337 | FILE_UNIX_BASIC_INFO *info = NULL; | |
1338 | struct inode *newinode = NULL; | |
1339 | struct cifs_fattr fattr; | |
1340 | ||
1341 | info = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); | |
1342 | if (info == NULL) { | |
1343 | rc = -ENOMEM; | |
1344 | goto posix_mkdir_out; | |
1345 | } | |
1346 | ||
1347 | mode &= ~current_umask(); | |
1348 | rc = CIFSPOSIXCreate(xid, tcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode, | |
1349 | NULL /* netfid */, info, &oplock, full_path, | |
1350 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1351 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
1352 | if (rc == -EOPNOTSUPP) | |
1353 | goto posix_mkdir_out; | |
1354 | else if (rc) { | |
f96637be | 1355 | cifs_dbg(FYI, "posix mkdir returned 0x%x\n", rc); |
ff691e96 PS |
1356 | d_drop(dentry); |
1357 | goto posix_mkdir_out; | |
1358 | } | |
1359 | ||
1360 | if (info->Type == cpu_to_le32(-1)) | |
1361 | /* no return info, go query for it */ | |
1362 | goto posix_mkdir_get_info; | |
1363 | /* | |
1364 | * BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if | |
1365 | * need to set uid/gid. | |
1366 | */ | |
1367 | ||
1368 | cifs_unix_basic_to_fattr(&fattr, info, cifs_sb); | |
1369 | cifs_fill_uniqueid(inode->i_sb, &fattr); | |
1370 | newinode = cifs_iget(inode->i_sb, &fattr); | |
1371 | if (!newinode) | |
1372 | goto posix_mkdir_get_info; | |
1373 | ||
1374 | d_instantiate(dentry, newinode); | |
1375 | ||
1376 | #ifdef CONFIG_CIFS_DEBUG2 | |
f96637be JP |
1377 | cifs_dbg(FYI, "instantiated dentry %p %s to inode %p\n", |
1378 | dentry, dentry->d_name.name, newinode); | |
ff691e96 PS |
1379 | |
1380 | if (newinode->i_nlink != 2) | |
f96637be JP |
1381 | cifs_dbg(FYI, "unexpected number of links %d\n", |
1382 | newinode->i_nlink); | |
ff691e96 PS |
1383 | #endif |
1384 | ||
1385 | posix_mkdir_out: | |
1386 | kfree(info); | |
1387 | return rc; | |
1388 | posix_mkdir_get_info: | |
1389 | rc = cifs_mkdir_qinfo(inode, dentry, mode, full_path, cifs_sb, tcon, | |
1390 | xid); | |
1391 | goto posix_mkdir_out; | |
1392 | } | |
1393 | ||
18bb1db3 | 1394 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode) |
1da177e4 | 1395 | { |
ff691e96 | 1396 | int rc = 0; |
6d5786a3 | 1397 | unsigned int xid; |
1da177e4 | 1398 | struct cifs_sb_info *cifs_sb; |
7ffec372 | 1399 | struct tcon_link *tlink; |
29e20f9c | 1400 | struct cifs_tcon *tcon; |
f436720e | 1401 | struct TCP_Server_Info *server; |
ff691e96 | 1402 | char *full_path; |
1da177e4 | 1403 | |
f96637be JP |
1404 | cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n", |
1405 | mode, inode); | |
1da177e4 | 1406 | |
1da177e4 | 1407 | cifs_sb = CIFS_SB(inode->i_sb); |
7ffec372 JL |
1408 | tlink = cifs_sb_tlink(cifs_sb); |
1409 | if (IS_ERR(tlink)) | |
1410 | return PTR_ERR(tlink); | |
29e20f9c | 1411 | tcon = tlink_tcon(tlink); |
7ffec372 | 1412 | |
6d5786a3 | 1413 | xid = get_xid(); |
1da177e4 | 1414 | |
7f57356b | 1415 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 1416 | if (full_path == NULL) { |
0f3bc09e | 1417 | rc = -ENOMEM; |
7ffec372 | 1418 | goto mkdir_out; |
1da177e4 | 1419 | } |
50c2f753 | 1420 | |
29e20f9c PS |
1421 | if (cap_unix(tcon->ses) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
1422 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { | |
ff691e96 PS |
1423 | rc = cifs_posix_mkdir(inode, direntry, mode, full_path, cifs_sb, |
1424 | tcon, xid); | |
1425 | if (rc != -EOPNOTSUPP) | |
2dd29d31 | 1426 | goto mkdir_out; |
fb8c4b14 | 1427 | } |
ff691e96 | 1428 | |
f436720e PS |
1429 | server = tcon->ses->server; |
1430 | ||
1431 | if (!server->ops->mkdir) { | |
1432 | rc = -ENOSYS; | |
1433 | goto mkdir_out; | |
1434 | } | |
1435 | ||
1da177e4 | 1436 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
f436720e | 1437 | rc = server->ops->mkdir(xid, tcon, full_path, cifs_sb); |
1da177e4 | 1438 | if (rc) { |
f96637be | 1439 | cifs_dbg(FYI, "cifs_mkdir returned 0x%x\n", rc); |
1da177e4 | 1440 | d_drop(direntry); |
ff691e96 | 1441 | goto mkdir_out; |
1da177e4 | 1442 | } |
ff691e96 PS |
1443 | |
1444 | rc = cifs_mkdir_qinfo(inode, direntry, mode, full_path, cifs_sb, tcon, | |
1445 | xid); | |
fb8c4b14 | 1446 | mkdir_out: |
6de2ce42 PS |
1447 | /* |
1448 | * Force revalidate to get parent dir info when needed since cached | |
1449 | * attributes are invalid now. | |
1450 | */ | |
1451 | CIFS_I(inode)->time = 0; | |
1da177e4 | 1452 | kfree(full_path); |
6d5786a3 | 1453 | free_xid(xid); |
7ffec372 | 1454 | cifs_put_tlink(tlink); |
1da177e4 LT |
1455 | return rc; |
1456 | } | |
1457 | ||
1458 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) | |
1459 | { | |
1460 | int rc = 0; | |
6d5786a3 | 1461 | unsigned int xid; |
1da177e4 | 1462 | struct cifs_sb_info *cifs_sb; |
7ffec372 | 1463 | struct tcon_link *tlink; |
f958ca5d PS |
1464 | struct cifs_tcon *tcon; |
1465 | struct TCP_Server_Info *server; | |
1da177e4 LT |
1466 | char *full_path = NULL; |
1467 | struct cifsInodeInfo *cifsInode; | |
1468 | ||
f96637be | 1469 | cifs_dbg(FYI, "cifs_rmdir, inode = 0x%p\n", inode); |
1da177e4 | 1470 | |
6d5786a3 | 1471 | xid = get_xid(); |
1da177e4 | 1472 | |
7f57356b | 1473 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 1474 | if (full_path == NULL) { |
0f3bc09e | 1475 | rc = -ENOMEM; |
7ffec372 | 1476 | goto rmdir_exit; |
1da177e4 LT |
1477 | } |
1478 | ||
7ffec372 JL |
1479 | cifs_sb = CIFS_SB(inode->i_sb); |
1480 | tlink = cifs_sb_tlink(cifs_sb); | |
1481 | if (IS_ERR(tlink)) { | |
1482 | rc = PTR_ERR(tlink); | |
1483 | goto rmdir_exit; | |
1484 | } | |
f958ca5d PS |
1485 | tcon = tlink_tcon(tlink); |
1486 | server = tcon->ses->server; | |
1487 | ||
1488 | if (!server->ops->rmdir) { | |
1489 | rc = -ENOSYS; | |
1490 | cifs_put_tlink(tlink); | |
1491 | goto rmdir_exit; | |
1492 | } | |
7ffec372 | 1493 | |
f958ca5d | 1494 | rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb); |
7ffec372 | 1495 | cifs_put_tlink(tlink); |
1da177e4 LT |
1496 | |
1497 | if (!rc) { | |
3677db10 | 1498 | spin_lock(&direntry->d_inode->i_lock); |
fb8c4b14 | 1499 | i_size_write(direntry->d_inode, 0); |
ce71ec36 | 1500 | clear_nlink(direntry->d_inode); |
3677db10 | 1501 | spin_unlock(&direntry->d_inode->i_lock); |
1da177e4 LT |
1502 | } |
1503 | ||
1504 | cifsInode = CIFS_I(direntry->d_inode); | |
6de2ce42 PS |
1505 | /* force revalidate to go get info when needed */ |
1506 | cifsInode->time = 0; | |
42c24544 SF |
1507 | |
1508 | cifsInode = CIFS_I(inode); | |
6de2ce42 PS |
1509 | /* |
1510 | * Force revalidate to get parent dir info when needed since cached | |
1511 | * attributes are invalid now. | |
1512 | */ | |
1513 | cifsInode->time = 0; | |
42c24544 | 1514 | |
1da177e4 LT |
1515 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
1516 | current_fs_time(inode->i_sb); | |
1517 | ||
7ffec372 | 1518 | rmdir_exit: |
1da177e4 | 1519 | kfree(full_path); |
6d5786a3 | 1520 | free_xid(xid); |
1da177e4 LT |
1521 | return rc; |
1522 | } | |
1523 | ||
ee2fd967 | 1524 | static int |
8ceb9843 PS |
1525 | cifs_do_rename(const unsigned int xid, struct dentry *from_dentry, |
1526 | const char *from_path, struct dentry *to_dentry, | |
1527 | const char *to_path) | |
ee2fd967 SF |
1528 | { |
1529 | struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb); | |
7ffec372 | 1530 | struct tcon_link *tlink; |
8ceb9843 PS |
1531 | struct cifs_tcon *tcon; |
1532 | struct TCP_Server_Info *server; | |
ee2fd967 SF |
1533 | __u16 srcfid; |
1534 | int oplock, rc; | |
1535 | ||
7ffec372 JL |
1536 | tlink = cifs_sb_tlink(cifs_sb); |
1537 | if (IS_ERR(tlink)) | |
1538 | return PTR_ERR(tlink); | |
8ceb9843 PS |
1539 | tcon = tlink_tcon(tlink); |
1540 | server = tcon->ses->server; | |
1541 | ||
1542 | if (!server->ops->rename) | |
1543 | return -ENOSYS; | |
7ffec372 | 1544 | |
ee2fd967 | 1545 | /* try path-based rename first */ |
8ceb9843 | 1546 | rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb); |
ee2fd967 SF |
1547 | |
1548 | /* | |
8ceb9843 PS |
1549 | * Don't bother with rename by filehandle unless file is busy and |
1550 | * source. Note that cross directory moves do not work with | |
ee2fd967 SF |
1551 | * rename by filehandle to various Windows servers. |
1552 | */ | |
47c78f4a | 1553 | if (rc == 0 || rc != -EBUSY) |
7ffec372 | 1554 | goto do_rename_exit; |
ee2fd967 | 1555 | |
ed0e3ace JL |
1556 | /* open-file renames don't work across directories */ |
1557 | if (to_dentry->d_parent != from_dentry->d_parent) | |
7ffec372 | 1558 | goto do_rename_exit; |
ed0e3ace | 1559 | |
ee2fd967 | 1560 | /* open the file to be renamed -- we need DELETE perms */ |
8ceb9843 | 1561 | rc = CIFSSMBOpen(xid, tcon, from_path, FILE_OPEN, DELETE, |
ee2fd967 SF |
1562 | CREATE_NOT_DIR, &srcfid, &oplock, NULL, |
1563 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1564 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
ee2fd967 | 1565 | if (rc == 0) { |
8ceb9843 | 1566 | rc = CIFSSMBRenameOpenFile(xid, tcon, srcfid, |
ee2fd967 SF |
1567 | (const char *) to_dentry->d_name.name, |
1568 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & | |
1569 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
8ceb9843 | 1570 | CIFSSMBClose(xid, tcon, srcfid); |
ee2fd967 | 1571 | } |
7ffec372 JL |
1572 | do_rename_exit: |
1573 | cifs_put_tlink(tlink); | |
ee2fd967 SF |
1574 | return rc; |
1575 | } | |
1576 | ||
8ceb9843 PS |
1577 | int |
1578 | cifs_rename(struct inode *source_dir, struct dentry *source_dentry, | |
1579 | struct inode *target_dir, struct dentry *target_dentry) | |
1da177e4 | 1580 | { |
8ceb9843 PS |
1581 | char *from_name = NULL; |
1582 | char *to_name = NULL; | |
639e7a91 | 1583 | struct cifs_sb_info *cifs_sb; |
7ffec372 | 1584 | struct tcon_link *tlink; |
96daf2b0 | 1585 | struct cifs_tcon *tcon; |
ee2fd967 SF |
1586 | FILE_UNIX_BASIC_INFO *info_buf_source = NULL; |
1587 | FILE_UNIX_BASIC_INFO *info_buf_target; | |
6d5786a3 PS |
1588 | unsigned int xid; |
1589 | int rc, tmprc; | |
1da177e4 | 1590 | |
639e7a91 | 1591 | cifs_sb = CIFS_SB(source_dir->i_sb); |
7ffec372 JL |
1592 | tlink = cifs_sb_tlink(cifs_sb); |
1593 | if (IS_ERR(tlink)) | |
1594 | return PTR_ERR(tlink); | |
1595 | tcon = tlink_tcon(tlink); | |
1da177e4 | 1596 | |
6d5786a3 | 1597 | xid = get_xid(); |
ee2fd967 | 1598 | |
ee2fd967 SF |
1599 | /* |
1600 | * we already have the rename sem so we do not need to | |
1601 | * grab it again here to protect the path integrity | |
1602 | */ | |
8ceb9843 PS |
1603 | from_name = build_path_from_dentry(source_dentry); |
1604 | if (from_name == NULL) { | |
ee2fd967 SF |
1605 | rc = -ENOMEM; |
1606 | goto cifs_rename_exit; | |
1607 | } | |
1608 | ||
8ceb9843 PS |
1609 | to_name = build_path_from_dentry(target_dentry); |
1610 | if (to_name == NULL) { | |
1da177e4 LT |
1611 | rc = -ENOMEM; |
1612 | goto cifs_rename_exit; | |
1613 | } | |
1614 | ||
8ceb9843 PS |
1615 | rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry, |
1616 | to_name); | |
ee2fd967 | 1617 | |
14121bdc JL |
1618 | if (rc == -EEXIST && tcon->unix_ext) { |
1619 | /* | |
8ceb9843 PS |
1620 | * Are src and dst hardlinks of same inode? We can only tell |
1621 | * with unix extensions enabled. | |
14121bdc JL |
1622 | */ |
1623 | info_buf_source = | |
1624 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), | |
1625 | GFP_KERNEL); | |
1626 | if (info_buf_source == NULL) { | |
1627 | rc = -ENOMEM; | |
1628 | goto cifs_rename_exit; | |
1629 | } | |
1630 | ||
1631 | info_buf_target = info_buf_source + 1; | |
8ceb9843 PS |
1632 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name, |
1633 | info_buf_source, | |
1634 | cifs_sb->local_nls, | |
1635 | cifs_sb->mnt_cifs_flags & | |
1636 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
8d281efb | 1637 | if (tmprc != 0) |
14121bdc | 1638 | goto unlink_target; |
ee2fd967 | 1639 | |
8ceb9843 PS |
1640 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name, |
1641 | info_buf_target, | |
1642 | cifs_sb->local_nls, | |
1643 | cifs_sb->mnt_cifs_flags & | |
1644 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
14121bdc | 1645 | |
8d281efb | 1646 | if (tmprc == 0 && (info_buf_source->UniqueId == |
ae6884a9 | 1647 | info_buf_target->UniqueId)) { |
14121bdc | 1648 | /* same file, POSIX says that this is a noop */ |
ae6884a9 | 1649 | rc = 0; |
14121bdc | 1650 | goto cifs_rename_exit; |
ae6884a9 | 1651 | } |
8ceb9843 PS |
1652 | } |
1653 | /* | |
1654 | * else ... BB we could add the same check for Windows by | |
1655 | * checking the UniqueId via FILE_INTERNAL_INFO | |
1656 | */ | |
14121bdc | 1657 | |
ee2fd967 | 1658 | unlink_target: |
fc6f3943 JL |
1659 | /* Try unlinking the target dentry if it's not negative */ |
1660 | if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) { | |
c8d26061 PS |
1661 | if (S_ISDIR(target_dentry->d_inode->i_mode)) |
1662 | tmprc = cifs_rmdir(target_dir, target_dentry); | |
1663 | else | |
1664 | tmprc = cifs_unlink(target_dir, target_dentry); | |
14121bdc JL |
1665 | if (tmprc) |
1666 | goto cifs_rename_exit; | |
8ceb9843 PS |
1667 | rc = cifs_do_rename(xid, source_dentry, from_name, |
1668 | target_dentry, to_name); | |
1da177e4 LT |
1669 | } |
1670 | ||
4cf2ef68 PS |
1671 | /* force revalidate to go get info when needed */ |
1672 | CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0; | |
1673 | ||
1674 | source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime = | |
1675 | target_dir->i_mtime = current_fs_time(source_dir->i_sb); | |
1676 | ||
1da177e4 | 1677 | cifs_rename_exit: |
ee2fd967 | 1678 | kfree(info_buf_source); |
8ceb9843 PS |
1679 | kfree(from_name); |
1680 | kfree(to_name); | |
6d5786a3 | 1681 | free_xid(xid); |
7ffec372 | 1682 | cifs_put_tlink(tlink); |
1da177e4 LT |
1683 | return rc; |
1684 | } | |
1685 | ||
df2cf170 JL |
1686 | static bool |
1687 | cifs_inode_needs_reval(struct inode *inode) | |
1da177e4 | 1688 | { |
df2cf170 | 1689 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
6d20e840 | 1690 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
1da177e4 | 1691 | |
df2cf170 JL |
1692 | if (cifs_i->clientCanCacheRead) |
1693 | return false; | |
1da177e4 | 1694 | |
df2cf170 JL |
1695 | if (!lookupCacheEnabled) |
1696 | return true; | |
1da177e4 | 1697 | |
df2cf170 JL |
1698 | if (cifs_i->time == 0) |
1699 | return true; | |
1da177e4 | 1700 | |
6d20e840 SJ |
1701 | if (!time_in_range(jiffies, cifs_i->time, |
1702 | cifs_i->time + cifs_sb->actimeo)) | |
df2cf170 JL |
1703 | return true; |
1704 | ||
db19272e | 1705 | /* hardlinked files w/ noserverino get "special" treatment */ |
6d20e840 | 1706 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && |
db19272e JL |
1707 | S_ISREG(inode->i_mode) && inode->i_nlink != 1) |
1708 | return true; | |
1709 | ||
df2cf170 JL |
1710 | return false; |
1711 | } | |
1712 | ||
523fb8c8 SJ |
1713 | /* |
1714 | * Zap the cache. Called when invalid_mapping flag is set. | |
1715 | */ | |
6feb9891 | 1716 | int |
df2cf170 JL |
1717 | cifs_invalidate_mapping(struct inode *inode) |
1718 | { | |
6feb9891 | 1719 | int rc = 0; |
df2cf170 JL |
1720 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
1721 | ||
1722 | cifs_i->invalid_mapping = false; | |
1723 | ||
df2cf170 | 1724 | if (inode->i_mapping && inode->i_mapping->nrpages != 0) { |
257fb1f1 PS |
1725 | rc = invalidate_inode_pages2(inode->i_mapping); |
1726 | if (rc) { | |
f96637be JP |
1727 | cifs_dbg(VFS, "%s: could not invalidate inode %p\n", |
1728 | __func__, inode); | |
257fb1f1 PS |
1729 | cifs_i->invalid_mapping = true; |
1730 | } | |
df2cf170 | 1731 | } |
257fb1f1 | 1732 | |
9451a9a5 | 1733 | cifs_fscache_reset_inode_cookie(inode); |
6feb9891 | 1734 | return rc; |
df2cf170 JL |
1735 | } |
1736 | ||
6feb9891 | 1737 | int cifs_revalidate_file_attr(struct file *filp) |
abab095d JL |
1738 | { |
1739 | int rc = 0; | |
496ad9aa | 1740 | struct inode *inode = file_inode(filp); |
ba00ba64 | 1741 | struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data; |
abab095d JL |
1742 | |
1743 | if (!cifs_inode_needs_reval(inode)) | |
6feb9891 | 1744 | return rc; |
abab095d | 1745 | |
13cfb733 | 1746 | if (tlink_tcon(cfile->tlink)->unix_ext) |
abab095d JL |
1747 | rc = cifs_get_file_info_unix(filp); |
1748 | else | |
1749 | rc = cifs_get_file_info(filp); | |
1750 | ||
abab095d JL |
1751 | return rc; |
1752 | } | |
1753 | ||
6feb9891 | 1754 | int cifs_revalidate_dentry_attr(struct dentry *dentry) |
df2cf170 | 1755 | { |
6d5786a3 | 1756 | unsigned int xid; |
df2cf170 | 1757 | int rc = 0; |
df2cf170 JL |
1758 | struct inode *inode = dentry->d_inode; |
1759 | struct super_block *sb = dentry->d_sb; | |
6feb9891 | 1760 | char *full_path = NULL; |
df2cf170 JL |
1761 | |
1762 | if (inode == NULL) | |
1763 | return -ENOENT; | |
1da177e4 | 1764 | |
df2cf170 | 1765 | if (!cifs_inode_needs_reval(inode)) |
6feb9891 PS |
1766 | return rc; |
1767 | ||
6d5786a3 | 1768 | xid = get_xid(); |
1da177e4 LT |
1769 | |
1770 | /* can not safely grab the rename sem here if rename calls revalidate | |
1771 | since that would deadlock */ | |
df2cf170 | 1772 | full_path = build_path_from_dentry(dentry); |
1da177e4 | 1773 | if (full_path == NULL) { |
0f3bc09e | 1774 | rc = -ENOMEM; |
6feb9891 | 1775 | goto out; |
1da177e4 LT |
1776 | } |
1777 | ||
f96637be JP |
1778 | cifs_dbg(FYI, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time %ld jiffies %ld\n", |
1779 | full_path, inode, inode->i_count.counter, | |
f19159dc | 1780 | dentry, dentry->d_time, jiffies); |
1da177e4 | 1781 | |
0d424ad0 | 1782 | if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext) |
df2cf170 JL |
1783 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
1784 | else | |
1785 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, | |
1786 | xid, NULL); | |
1da177e4 | 1787 | |
6feb9891 | 1788 | out: |
1da177e4 | 1789 | kfree(full_path); |
6d5786a3 | 1790 | free_xid(xid); |
1da177e4 LT |
1791 | return rc; |
1792 | } | |
1793 | ||
6feb9891 PS |
1794 | int cifs_revalidate_file(struct file *filp) |
1795 | { | |
1796 | int rc; | |
496ad9aa | 1797 | struct inode *inode = file_inode(filp); |
6feb9891 PS |
1798 | |
1799 | rc = cifs_revalidate_file_attr(filp); | |
1800 | if (rc) | |
1801 | return rc; | |
1802 | ||
1803 | if (CIFS_I(inode)->invalid_mapping) | |
1804 | rc = cifs_invalidate_mapping(inode); | |
1805 | return rc; | |
1806 | } | |
1807 | ||
1808 | /* revalidate a dentry's inode attributes */ | |
1809 | int cifs_revalidate_dentry(struct dentry *dentry) | |
1810 | { | |
1811 | int rc; | |
1812 | struct inode *inode = dentry->d_inode; | |
1813 | ||
1814 | rc = cifs_revalidate_dentry_attr(dentry); | |
1815 | if (rc) | |
1816 | return rc; | |
1817 | ||
1818 | if (CIFS_I(inode)->invalid_mapping) | |
1819 | rc = cifs_invalidate_mapping(inode); | |
1820 | return rc; | |
1821 | } | |
1822 | ||
1da177e4 | 1823 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
1c456013 | 1824 | struct kstat *stat) |
1da177e4 | 1825 | { |
3aa1c8c2 | 1826 | struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); |
96daf2b0 | 1827 | struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); |
6feb9891 PS |
1828 | struct inode *inode = dentry->d_inode; |
1829 | int rc; | |
3aa1c8c2 | 1830 | |
6feb9891 PS |
1831 | /* |
1832 | * We need to be sure that all dirty pages are written and the server | |
1833 | * has actual ctime, mtime and file length. | |
1834 | */ | |
1835 | if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping && | |
1836 | inode->i_mapping->nrpages != 0) { | |
1837 | rc = filemap_fdatawait(inode->i_mapping); | |
156ecb2d SF |
1838 | if (rc) { |
1839 | mapping_set_error(inode->i_mapping, rc); | |
1840 | return rc; | |
1841 | } | |
6feb9891 | 1842 | } |
1c456013 | 1843 | |
6feb9891 PS |
1844 | rc = cifs_revalidate_dentry_attr(dentry); |
1845 | if (rc) | |
1846 | return rc; | |
1847 | ||
1848 | generic_fillattr(inode, stat); | |
1849 | stat->blksize = CIFS_MAX_MSGSIZE; | |
1850 | stat->ino = CIFS_I(inode)->uniqueid; | |
1851 | ||
1852 | /* | |
d3d1fce1 JL |
1853 | * If on a multiuser mount without unix extensions or cifsacl being |
1854 | * enabled, and the admin hasn't overridden them, set the ownership | |
1855 | * to the fsuid/fsgid of the current process. | |
6feb9891 PS |
1856 | */ |
1857 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) && | |
d3d1fce1 | 1858 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
6feb9891 PS |
1859 | !tcon->unix_ext) { |
1860 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) | |
1861 | stat->uid = current_fsuid(); | |
1862 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) | |
1863 | stat->gid = current_fsgid(); | |
5fe14c85 | 1864 | } |
6feb9891 | 1865 | return rc; |
1da177e4 LT |
1866 | } |
1867 | ||
1868 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) | |
1869 | { | |
1870 | pgoff_t index = from >> PAGE_CACHE_SHIFT; | |
1871 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); | |
1872 | struct page *page; | |
1da177e4 LT |
1873 | int rc = 0; |
1874 | ||
1875 | page = grab_cache_page(mapping, index); | |
1876 | if (!page) | |
1877 | return -ENOMEM; | |
1878 | ||
eebd2aa3 | 1879 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
1da177e4 LT |
1880 | unlock_page(page); |
1881 | page_cache_release(page); | |
1882 | return rc; | |
1883 | } | |
1884 | ||
1b947463 | 1885 | static void cifs_setsize(struct inode *inode, loff_t offset) |
3677db10 | 1886 | { |
c08d3b0e | 1887 | loff_t oldsize; |
3677db10 | 1888 | |
ba6a46a0 | 1889 | spin_lock(&inode->i_lock); |
c08d3b0e | 1890 | oldsize = inode->i_size; |
3677db10 | 1891 | i_size_write(inode, offset); |
ba6a46a0 | 1892 | spin_unlock(&inode->i_lock); |
1b947463 | 1893 | |
c08d3b0e | 1894 | truncate_pagecache(inode, oldsize, offset); |
3677db10 SF |
1895 | } |
1896 | ||
8efdbde6 JL |
1897 | static int |
1898 | cifs_set_file_size(struct inode *inode, struct iattr *attrs, | |
6d5786a3 | 1899 | unsigned int xid, char *full_path) |
8efdbde6 JL |
1900 | { |
1901 | int rc; | |
1902 | struct cifsFileInfo *open_file; | |
1903 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
1904 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 1905 | struct tcon_link *tlink = NULL; |
d1433418 PS |
1906 | struct cifs_tcon *tcon = NULL; |
1907 | struct TCP_Server_Info *server; | |
fa2989f4 | 1908 | struct cifs_io_parms io_parms; |
8efdbde6 JL |
1909 | |
1910 | /* | |
1911 | * To avoid spurious oplock breaks from server, in the case of | |
1912 | * inodes that we already have open, avoid doing path based | |
1913 | * setting of file size if we can do it by handle. | |
1914 | * This keeps our caching token (oplock) and avoids timeouts | |
1915 | * when the local oplock break takes longer to flush | |
1916 | * writebehind data than the SMB timeout for the SetPathInfo | |
1917 | * request would allow | |
1918 | */ | |
6508d904 | 1919 | open_file = find_writable_file(cifsInode, true); |
8efdbde6 | 1920 | if (open_file) { |
d1433418 PS |
1921 | tcon = tlink_tcon(open_file->tlink); |
1922 | server = tcon->ses->server; | |
1923 | if (server->ops->set_file_size) | |
1924 | rc = server->ops->set_file_size(xid, tcon, open_file, | |
1925 | attrs->ia_size, false); | |
1926 | else | |
1927 | rc = -ENOSYS; | |
6ab409b5 | 1928 | cifsFileInfo_put(open_file); |
f96637be | 1929 | cifs_dbg(FYI, "SetFSize for attrs rc = %d\n", rc); |
8efdbde6 JL |
1930 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
1931 | unsigned int bytes_written; | |
fa2989f4 | 1932 | |
d1433418 PS |
1933 | io_parms.netfid = open_file->fid.netfid; |
1934 | io_parms.pid = open_file->pid; | |
1935 | io_parms.tcon = tcon; | |
fa2989f4 PS |
1936 | io_parms.offset = 0; |
1937 | io_parms.length = attrs->ia_size; | |
1938 | rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, | |
1939 | NULL, NULL, 1); | |
f96637be | 1940 | cifs_dbg(FYI, "Wrt seteof rc %d\n", rc); |
8efdbde6 JL |
1941 | } |
1942 | } else | |
1943 | rc = -EINVAL; | |
1944 | ||
d1433418 PS |
1945 | if (!rc) |
1946 | goto set_size_out; | |
1947 | ||
1948 | if (tcon == NULL) { | |
1949 | tlink = cifs_sb_tlink(cifs_sb); | |
1950 | if (IS_ERR(tlink)) | |
1951 | return PTR_ERR(tlink); | |
1952 | tcon = tlink_tcon(tlink); | |
1953 | server = tcon->ses->server; | |
1954 | } | |
ba00ba64 | 1955 | |
d1433418 PS |
1956 | /* |
1957 | * Set file size by pathname rather than by handle either because no | |
1958 | * valid, writeable file handle for it was found or because there was | |
1959 | * an error setting it by handle. | |
1960 | */ | |
1961 | if (server->ops->set_path_size) | |
1962 | rc = server->ops->set_path_size(xid, tcon, full_path, | |
1963 | attrs->ia_size, cifs_sb, false); | |
1964 | else | |
1965 | rc = -ENOSYS; | |
f96637be | 1966 | cifs_dbg(FYI, "SetEOF by path (setattrs) rc = %d\n", rc); |
d1433418 PS |
1967 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
1968 | __u16 netfid; | |
1969 | int oplock = 0; | |
1970 | ||
1971 | rc = SMBLegacyOpen(xid, tcon, full_path, FILE_OPEN, | |
1972 | GENERIC_WRITE, CREATE_NOT_DIR, &netfid, | |
1973 | &oplock, NULL, cifs_sb->local_nls, | |
8efdbde6 | 1974 | cifs_sb->mnt_cifs_flags & |
d1433418 PS |
1975 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
1976 | if (rc == 0) { | |
1977 | unsigned int bytes_written; | |
1978 | ||
1979 | io_parms.netfid = netfid; | |
1980 | io_parms.pid = current->tgid; | |
1981 | io_parms.tcon = tcon; | |
1982 | io_parms.offset = 0; | |
1983 | io_parms.length = attrs->ia_size; | |
1984 | rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, NULL, | |
1985 | NULL, 1); | |
f96637be | 1986 | cifs_dbg(FYI, "wrt seteof rc %d\n", rc); |
d1433418 | 1987 | CIFSSMBClose(xid, tcon, netfid); |
8efdbde6 JL |
1988 | } |
1989 | } | |
d1433418 PS |
1990 | if (tlink) |
1991 | cifs_put_tlink(tlink); | |
8efdbde6 | 1992 | |
d1433418 | 1993 | set_size_out: |
8efdbde6 | 1994 | if (rc == 0) { |
fbec9ab9 | 1995 | cifsInode->server_eof = attrs->ia_size; |
1b947463 | 1996 | cifs_setsize(inode, attrs->ia_size); |
8efdbde6 JL |
1997 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
1998 | } | |
1999 | ||
2000 | return rc; | |
2001 | } | |
2002 | ||
3fe5c1dd JL |
2003 | static int |
2004 | cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs) | |
2005 | { | |
2006 | int rc; | |
6d5786a3 | 2007 | unsigned int xid; |
3fe5c1dd JL |
2008 | char *full_path = NULL; |
2009 | struct inode *inode = direntry->d_inode; | |
2010 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); | |
2011 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
7ffec372 | 2012 | struct tcon_link *tlink; |
96daf2b0 | 2013 | struct cifs_tcon *pTcon; |
3fe5c1dd | 2014 | struct cifs_unix_set_info_args *args = NULL; |
3bbeeb3c | 2015 | struct cifsFileInfo *open_file; |
3fe5c1dd | 2016 | |
f96637be | 2017 | cifs_dbg(FYI, "setattr_unix on file %s attrs->ia_valid=0x%x\n", |
b6b38f70 | 2018 | direntry->d_name.name, attrs->ia_valid); |
3fe5c1dd | 2019 | |
6d5786a3 | 2020 | xid = get_xid(); |
3fe5c1dd | 2021 | |
db78b877 CH |
2022 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
2023 | attrs->ia_valid |= ATTR_FORCE; | |
2024 | ||
2025 | rc = inode_change_ok(inode, attrs); | |
2026 | if (rc < 0) | |
2027 | goto out; | |
3fe5c1dd JL |
2028 | |
2029 | full_path = build_path_from_dentry(direntry); | |
2030 | if (full_path == NULL) { | |
2031 | rc = -ENOMEM; | |
2032 | goto out; | |
2033 | } | |
2034 | ||
0f4d634c JL |
2035 | /* |
2036 | * Attempt to flush data before changing attributes. We need to do | |
2037 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the | |
2038 | * ownership or mode then we may also need to do this. Here, we take | |
2039 | * the safe way out and just do the flush on all setattr requests. If | |
2040 | * the flush returns error, store it to report later and continue. | |
2041 | * | |
2042 | * BB: This should be smarter. Why bother flushing pages that | |
2043 | * will be truncated anyway? Also, should we error out here if | |
2044 | * the flush returns error? | |
2045 | */ | |
2046 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b JL |
2047 | mapping_set_error(inode->i_mapping, rc); |
2048 | rc = 0; | |
3fe5c1dd JL |
2049 | |
2050 | if (attrs->ia_valid & ATTR_SIZE) { | |
2051 | rc = cifs_set_file_size(inode, attrs, xid, full_path); | |
2052 | if (rc != 0) | |
2053 | goto out; | |
2054 | } | |
2055 | ||
2056 | /* skip mode change if it's just for clearing setuid/setgid */ | |
2057 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) | |
2058 | attrs->ia_valid &= ~ATTR_MODE; | |
2059 | ||
2060 | args = kmalloc(sizeof(*args), GFP_KERNEL); | |
2061 | if (args == NULL) { | |
2062 | rc = -ENOMEM; | |
2063 | goto out; | |
2064 | } | |
2065 | ||
2066 | /* set up the struct */ | |
2067 | if (attrs->ia_valid & ATTR_MODE) | |
2068 | args->mode = attrs->ia_mode; | |
2069 | else | |
2070 | args->mode = NO_CHANGE_64; | |
2071 | ||
2072 | if (attrs->ia_valid & ATTR_UID) | |
2073 | args->uid = attrs->ia_uid; | |
2074 | else | |
49418b2c | 2075 | args->uid = INVALID_UID; /* no change */ |
3fe5c1dd JL |
2076 | |
2077 | if (attrs->ia_valid & ATTR_GID) | |
2078 | args->gid = attrs->ia_gid; | |
2079 | else | |
49418b2c | 2080 | args->gid = INVALID_GID; /* no change */ |
3fe5c1dd JL |
2081 | |
2082 | if (attrs->ia_valid & ATTR_ATIME) | |
2083 | args->atime = cifs_UnixTimeToNT(attrs->ia_atime); | |
2084 | else | |
2085 | args->atime = NO_CHANGE_64; | |
2086 | ||
2087 | if (attrs->ia_valid & ATTR_MTIME) | |
2088 | args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime); | |
2089 | else | |
2090 | args->mtime = NO_CHANGE_64; | |
2091 | ||
2092 | if (attrs->ia_valid & ATTR_CTIME) | |
2093 | args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime); | |
2094 | else | |
2095 | args->ctime = NO_CHANGE_64; | |
2096 | ||
2097 | args->device = 0; | |
6508d904 | 2098 | open_file = find_writable_file(cifsInode, true); |
3bbeeb3c | 2099 | if (open_file) { |
4b4de76e | 2100 | u16 nfid = open_file->fid.netfid; |
3bbeeb3c | 2101 | u32 npid = open_file->pid; |
13cfb733 | 2102 | pTcon = tlink_tcon(open_file->tlink); |
3bbeeb3c | 2103 | rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid); |
6ab409b5 | 2104 | cifsFileInfo_put(open_file); |
3bbeeb3c | 2105 | } else { |
7ffec372 JL |
2106 | tlink = cifs_sb_tlink(cifs_sb); |
2107 | if (IS_ERR(tlink)) { | |
2108 | rc = PTR_ERR(tlink); | |
2109 | goto out; | |
2110 | } | |
2111 | pTcon = tlink_tcon(tlink); | |
3bbeeb3c | 2112 | rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args, |
01ea95e3 JL |
2113 | cifs_sb->local_nls, |
2114 | cifs_sb->mnt_cifs_flags & | |
2115 | CIFS_MOUNT_MAP_SPECIAL_CHR); | |
7ffec372 | 2116 | cifs_put_tlink(tlink); |
3bbeeb3c | 2117 | } |
3fe5c1dd | 2118 | |
1025774c CH |
2119 | if (rc) |
2120 | goto out; | |
ccd4bb1b | 2121 | |
1025774c | 2122 | if ((attrs->ia_valid & ATTR_SIZE) && |
1b947463 CH |
2123 | attrs->ia_size != i_size_read(inode)) |
2124 | truncate_setsize(inode, attrs->ia_size); | |
1025774c CH |
2125 | |
2126 | setattr_copy(inode, attrs); | |
2127 | mark_inode_dirty(inode); | |
2128 | ||
2129 | /* force revalidate when any of these times are set since some | |
2130 | of the fs types (eg ext3, fat) do not have fine enough | |
2131 | time granularity to match protocol, and we do not have a | |
2132 | a way (yet) to query the server fs's time granularity (and | |
2133 | whether it rounds times down). | |
2134 | */ | |
2135 | if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)) | |
2136 | cifsInode->time = 0; | |
3fe5c1dd JL |
2137 | out: |
2138 | kfree(args); | |
2139 | kfree(full_path); | |
6d5786a3 | 2140 | free_xid(xid); |
3fe5c1dd JL |
2141 | return rc; |
2142 | } | |
2143 | ||
0510eeb7 JL |
2144 | static int |
2145 | cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs) | |
1da177e4 | 2146 | { |
6d5786a3 | 2147 | unsigned int xid; |
8abf2775 EB |
2148 | kuid_t uid = INVALID_UID; |
2149 | kgid_t gid = INVALID_GID; | |
3fe5c1dd JL |
2150 | struct inode *inode = direntry->d_inode; |
2151 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
3fe5c1dd | 2152 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
1da177e4 LT |
2153 | char *full_path = NULL; |
2154 | int rc = -EACCES; | |
feb3e20c | 2155 | __u32 dosattr = 0; |
4e1e7fb9 | 2156 | __u64 mode = NO_CHANGE_64; |
3fe5c1dd | 2157 | |
6d5786a3 | 2158 | xid = get_xid(); |
1da177e4 | 2159 | |
f96637be | 2160 | cifs_dbg(FYI, "setattr on file %s attrs->iavalid 0x%x\n", |
b6b38f70 | 2161 | direntry->d_name.name, attrs->ia_valid); |
6473a559 | 2162 | |
db78b877 CH |
2163 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
2164 | attrs->ia_valid |= ATTR_FORCE; | |
2165 | ||
2166 | rc = inode_change_ok(inode, attrs); | |
2167 | if (rc < 0) { | |
6d5786a3 | 2168 | free_xid(xid); |
db78b877 | 2169 | return rc; |
6473a559 | 2170 | } |
50c2f753 | 2171 | |
7f57356b | 2172 | full_path = build_path_from_dentry(direntry); |
1da177e4 | 2173 | if (full_path == NULL) { |
0f3bc09e | 2174 | rc = -ENOMEM; |
6d5786a3 | 2175 | free_xid(xid); |
0f3bc09e | 2176 | return rc; |
1da177e4 | 2177 | } |
1da177e4 | 2178 | |
0f4d634c JL |
2179 | /* |
2180 | * Attempt to flush data before changing attributes. We need to do | |
2181 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the | |
2182 | * ownership or mode then we may also need to do this. Here, we take | |
2183 | * the safe way out and just do the flush on all setattr requests. If | |
2184 | * the flush returns error, store it to report later and continue. | |
2185 | * | |
2186 | * BB: This should be smarter. Why bother flushing pages that | |
2187 | * will be truncated anyway? Also, should we error out here if | |
2188 | * the flush returns error? | |
2189 | */ | |
2190 | rc = filemap_write_and_wait(inode->i_mapping); | |
eb4b756b JL |
2191 | mapping_set_error(inode->i_mapping, rc); |
2192 | rc = 0; | |
cea21805 | 2193 | |
50531444 | 2194 | if (attrs->ia_valid & ATTR_SIZE) { |
8efdbde6 JL |
2195 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
2196 | if (rc != 0) | |
e30dcf3a | 2197 | goto cifs_setattr_exit; |
1da177e4 | 2198 | } |
4ca691a8 | 2199 | |
a5ff3769 SP |
2200 | if (attrs->ia_valid & ATTR_UID) |
2201 | uid = attrs->ia_uid; | |
2202 | ||
2203 | if (attrs->ia_valid & ATTR_GID) | |
2204 | gid = attrs->ia_gid; | |
2205 | ||
2206 | #ifdef CONFIG_CIFS_ACL | |
2207 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { | |
8abf2775 | 2208 | if (uid_valid(uid) || gid_valid(gid)) { |
a5ff3769 SP |
2209 | rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64, |
2210 | uid, gid); | |
2211 | if (rc) { | |
f96637be JP |
2212 | cifs_dbg(FYI, "%s: Setting id failed with error: %d\n", |
2213 | __func__, rc); | |
a5ff3769 SP |
2214 | goto cifs_setattr_exit; |
2215 | } | |
2216 | } | |
2217 | } else | |
2218 | #endif /* CONFIG_CIFS_ACL */ | |
3fe5c1dd | 2219 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) |
4ca691a8 | 2220 | attrs->ia_valid &= ~(ATTR_UID | ATTR_GID); |
1da177e4 | 2221 | |
d32c4f26 JL |
2222 | /* skip mode change if it's just for clearing setuid/setgid */ |
2223 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) | |
2224 | attrs->ia_valid &= ~ATTR_MODE; | |
2225 | ||
1da177e4 | 2226 | if (attrs->ia_valid & ATTR_MODE) { |
1da177e4 | 2227 | mode = attrs->ia_mode; |
cdbce9c8 | 2228 | rc = 0; |
79df1bae | 2229 | #ifdef CONFIG_CIFS_ACL |
78415d2d | 2230 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
a5ff3769 | 2231 | rc = id_mode_to_cifs_acl(inode, full_path, mode, |
8abf2775 | 2232 | INVALID_UID, INVALID_GID); |
78415d2d | 2233 | if (rc) { |
f96637be JP |
2234 | cifs_dbg(FYI, "%s: Setting ACL failed with error: %d\n", |
2235 | __func__, rc); | |
78415d2d SP |
2236 | goto cifs_setattr_exit; |
2237 | } | |
2238 | } else | |
79df1bae | 2239 | #endif /* CONFIG_CIFS_ACL */ |
5132861a JL |
2240 | if (((mode & S_IWUGO) == 0) && |
2241 | (cifsInode->cifsAttrs & ATTR_READONLY) == 0) { | |
feb3e20c JL |
2242 | |
2243 | dosattr = cifsInode->cifsAttrs | ATTR_READONLY; | |
2244 | ||
5132861a JL |
2245 | /* fix up mode if we're not using dynperm */ |
2246 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) | |
2247 | attrs->ia_mode = inode->i_mode & ~S_IWUGO; | |
2248 | } else if ((mode & S_IWUGO) && | |
2249 | (cifsInode->cifsAttrs & ATTR_READONLY)) { | |
feb3e20c JL |
2250 | |
2251 | dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY; | |
2252 | /* Attributes of 0 are ignored */ | |
2253 | if (dosattr == 0) | |
2254 | dosattr |= ATTR_NORMAL; | |
5132861a JL |
2255 | |
2256 | /* reset local inode permissions to normal */ | |
2257 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { | |
2258 | attrs->ia_mode &= ~(S_IALLUGO); | |
2259 | if (S_ISDIR(inode->i_mode)) | |
2260 | attrs->ia_mode |= | |
2261 | cifs_sb->mnt_dir_mode; | |
2262 | else | |
2263 | attrs->ia_mode |= | |
2264 | cifs_sb->mnt_file_mode; | |
2265 | } | |
2266 | } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { | |
2267 | /* ignore mode change - ATTR_READONLY hasn't changed */ | |
2268 | attrs->ia_valid &= ~ATTR_MODE; | |
1da177e4 | 2269 | } |
1da177e4 LT |
2270 | } |
2271 | ||
feb3e20c JL |
2272 | if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) || |
2273 | ((attrs->ia_valid & ATTR_MODE) && dosattr)) { | |
2274 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); | |
2275 | /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */ | |
1da177e4 | 2276 | |
e30dcf3a SF |
2277 | /* Even if error on time set, no sense failing the call if |
2278 | the server would set the time to a reasonable value anyway, | |
2279 | and this check ensures that we are not being called from | |
2280 | sys_utimes in which case we ought to fail the call back to | |
2281 | the user when the server rejects the call */ | |
fb8c4b14 | 2282 | if ((rc) && (attrs->ia_valid & |
feb3e20c | 2283 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
e30dcf3a | 2284 | rc = 0; |
1da177e4 LT |
2285 | } |
2286 | ||
2287 | /* do not need local check to inode_check_ok since the server does | |
2288 | that */ | |
1025774c CH |
2289 | if (rc) |
2290 | goto cifs_setattr_exit; | |
2291 | ||
2292 | if ((attrs->ia_valid & ATTR_SIZE) && | |
1b947463 CH |
2293 | attrs->ia_size != i_size_read(inode)) |
2294 | truncate_setsize(inode, attrs->ia_size); | |
1025774c CH |
2295 | |
2296 | setattr_copy(inode, attrs); | |
2297 | mark_inode_dirty(inode); | |
1025774c | 2298 | |
e30dcf3a | 2299 | cifs_setattr_exit: |
1da177e4 | 2300 | kfree(full_path); |
6d5786a3 | 2301 | free_xid(xid); |
1da177e4 LT |
2302 | return rc; |
2303 | } | |
2304 | ||
0510eeb7 JL |
2305 | int |
2306 | cifs_setattr(struct dentry *direntry, struct iattr *attrs) | |
2307 | { | |
2308 | struct inode *inode = direntry->d_inode; | |
2309 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); | |
96daf2b0 | 2310 | struct cifs_tcon *pTcon = cifs_sb_master_tcon(cifs_sb); |
0510eeb7 JL |
2311 | |
2312 | if (pTcon->unix_ext) | |
2313 | return cifs_setattr_unix(direntry, attrs); | |
2314 | ||
2315 | return cifs_setattr_nounix(direntry, attrs); | |
2316 | ||
2317 | /* BB: add cifs_setattr_legacy for really old servers */ | |
2318 | } | |
2319 | ||
99ee4dbd | 2320 | #if 0 |
1da177e4 LT |
2321 | void cifs_delete_inode(struct inode *inode) |
2322 | { | |
f96637be | 2323 | cifs_dbg(FYI, "In cifs_delete_inode, inode = 0x%p\n", inode); |
1da177e4 LT |
2324 | /* may have to add back in if and when safe distributed caching of |
2325 | directories added e.g. via FindNotify */ | |
2326 | } | |
99ee4dbd | 2327 | #endif |