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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
ef14f0c1 | 20 | #include "xfs_acl.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
26 | #include "xfs_ag.h" | |
1da177e4 LT |
27 | #include "xfs_dir2.h" |
28 | #include "xfs_alloc.h" | |
29 | #include "xfs_dmapi.h" | |
30 | #include "xfs_quota.h" | |
31 | #include "xfs_mount.h" | |
1da177e4 | 32 | #include "xfs_bmap_btree.h" |
a844f451 | 33 | #include "xfs_alloc_btree.h" |
1da177e4 | 34 | #include "xfs_ialloc_btree.h" |
1da177e4 | 35 | #include "xfs_dir2_sf.h" |
a844f451 | 36 | #include "xfs_attr_sf.h" |
1da177e4 LT |
37 | #include "xfs_dinode.h" |
38 | #include "xfs_inode.h" | |
39 | #include "xfs_bmap.h" | |
a844f451 NS |
40 | #include "xfs_btree.h" |
41 | #include "xfs_ialloc.h" | |
1da177e4 LT |
42 | #include "xfs_rtalloc.h" |
43 | #include "xfs_error.h" | |
44 | #include "xfs_itable.h" | |
45 | #include "xfs_rw.h" | |
1da177e4 LT |
46 | #include "xfs_attr.h" |
47 | #include "xfs_buf_item.h" | |
48 | #include "xfs_utils.h" | |
739bfb2a | 49 | #include "xfs_vnodeops.h" |
0b1b213f | 50 | #include "xfs_trace.h" |
1da177e4 | 51 | |
16f7e0fe | 52 | #include <linux/capability.h> |
1da177e4 LT |
53 | #include <linux/xattr.h> |
54 | #include <linux/namei.h> | |
ef14f0c1 | 55 | #include <linux/posix_acl.h> |
446ada4a | 56 | #include <linux/security.h> |
3ed65264 | 57 | #include <linux/falloc.h> |
f35642e2 | 58 | #include <linux/fiemap.h> |
1da177e4 | 59 | |
42fe2b1f | 60 | /* |
f9581b14 CH |
61 | * Bring the timestamps in the XFS inode uptodate. |
62 | * | |
63 | * Used before writing the inode to disk. | |
42fe2b1f CH |
64 | */ |
65 | void | |
f9581b14 | 66 | xfs_synchronize_times( |
42fe2b1f CH |
67 | xfs_inode_t *ip) |
68 | { | |
01651646 | 69 | struct inode *inode = VFS_I(ip); |
42fe2b1f | 70 | |
f9581b14 CH |
71 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
72 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; | |
73 | ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; | |
74 | ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; | |
75 | ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; | |
76 | ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; | |
42fe2b1f CH |
77 | } |
78 | ||
5d51eff4 | 79 | /* |
bf904248 | 80 | * If the linux inode is valid, mark it dirty. |
5d51eff4 DC |
81 | * Used when commiting a dirty inode into a transaction so that |
82 | * the inode will get written back by the linux code | |
83 | */ | |
84 | void | |
85 | xfs_mark_inode_dirty_sync( | |
86 | xfs_inode_t *ip) | |
87 | { | |
01651646 | 88 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 89 | |
bf904248 | 90 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) |
af048193 | 91 | mark_inode_dirty_sync(inode); |
5d51eff4 DC |
92 | } |
93 | ||
66d834ea CH |
94 | void |
95 | xfs_mark_inode_dirty( | |
96 | xfs_inode_t *ip) | |
97 | { | |
98 | struct inode *inode = VFS_I(ip); | |
99 | ||
100 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) | |
101 | mark_inode_dirty(inode); | |
102 | } | |
103 | ||
4aeb664c NS |
104 | /* |
105 | * Change the requested timestamp in the given inode. | |
106 | * We don't lock across timestamp updates, and we don't log them but | |
107 | * we do record the fact that there is dirty information in core. | |
4aeb664c NS |
108 | */ |
109 | void | |
110 | xfs_ichgtime( | |
111 | xfs_inode_t *ip, | |
112 | int flags) | |
113 | { | |
e4f75291 | 114 | struct inode *inode = VFS_I(ip); |
4aeb664c | 115 | timespec_t tv; |
8e5975c8 | 116 | int sync_it = 0; |
4aeb664c | 117 | |
8e5975c8 CH |
118 | tv = current_fs_time(inode->i_sb); |
119 | ||
120 | if ((flags & XFS_ICHGTIME_MOD) && | |
121 | !timespec_equal(&inode->i_mtime, &tv)) { | |
4aeb664c | 122 | inode->i_mtime = tv; |
8e5975c8 | 123 | sync_it = 1; |
4aeb664c | 124 | } |
8e5975c8 CH |
125 | if ((flags & XFS_ICHGTIME_CHG) && |
126 | !timespec_equal(&inode->i_ctime, &tv)) { | |
4aeb664c | 127 | inode->i_ctime = tv; |
8e5975c8 | 128 | sync_it = 1; |
4aeb664c NS |
129 | } |
130 | ||
131 | /* | |
f9581b14 CH |
132 | * Update complete - now make sure everyone knows that the inode |
133 | * is dirty. | |
4aeb664c | 134 | */ |
f9581b14 | 135 | if (sync_it) |
94b97e39 | 136 | xfs_mark_inode_dirty_sync(ip); |
4aeb664c NS |
137 | } |
138 | ||
446ada4a NS |
139 | /* |
140 | * Hook in SELinux. This is not quite correct yet, what we really need | |
141 | * here (as we do for default ACLs) is a mechanism by which creation of | |
142 | * these attrs can be journalled at inode creation time (along with the | |
143 | * inode, of course, such that log replay can't cause these to be lost). | |
144 | */ | |
145 | STATIC int | |
416c6d5b | 146 | xfs_init_security( |
af048193 | 147 | struct inode *inode, |
446ada4a NS |
148 | struct inode *dir) |
149 | { | |
af048193 | 150 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
151 | size_t length; |
152 | void *value; | |
a9273ca5 | 153 | unsigned char *name; |
446ada4a NS |
154 | int error; |
155 | ||
a9273ca5 | 156 | error = security_inode_init_security(inode, dir, (char **)&name, |
af048193 | 157 | &value, &length); |
446ada4a NS |
158 | if (error) { |
159 | if (error == -EOPNOTSUPP) | |
160 | return 0; | |
161 | return -error; | |
162 | } | |
163 | ||
af048193 | 164 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
165 | |
166 | kfree(name); | |
167 | kfree(value); | |
168 | return error; | |
169 | } | |
170 | ||
556b8b16 BN |
171 | static void |
172 | xfs_dentry_to_name( | |
173 | struct xfs_name *namep, | |
174 | struct dentry *dentry) | |
175 | { | |
176 | namep->name = dentry->d_name.name; | |
177 | namep->len = dentry->d_name.len; | |
178 | } | |
179 | ||
7989cb8e | 180 | STATIC void |
416c6d5b | 181 | xfs_cleanup_inode( |
739bfb2a | 182 | struct inode *dir, |
af048193 | 183 | struct inode *inode, |
8f112e3b | 184 | struct dentry *dentry) |
3a69c7dc | 185 | { |
556b8b16 | 186 | struct xfs_name teardown; |
3a69c7dc YL |
187 | |
188 | /* Oh, the horror. | |
220b5284 | 189 | * If we can't add the ACL or we fail in |
416c6d5b | 190 | * xfs_init_security we must back out. |
3a69c7dc YL |
191 | * ENOSPC can hit here, among other things. |
192 | */ | |
556b8b16 | 193 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 194 | |
8f112e3b | 195 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 196 | iput(inode); |
3a69c7dc YL |
197 | } |
198 | ||
1da177e4 | 199 | STATIC int |
416c6d5b | 200 | xfs_vn_mknod( |
1da177e4 LT |
201 | struct inode *dir, |
202 | struct dentry *dentry, | |
203 | int mode, | |
204 | dev_t rdev) | |
205 | { | |
db0bb7ba | 206 | struct inode *inode; |
979ebab1 | 207 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 208 | struct posix_acl *default_acl = NULL; |
556b8b16 | 209 | struct xfs_name name; |
1da177e4 LT |
210 | int error; |
211 | ||
212 | /* | |
213 | * Irix uses Missed'em'V split, but doesn't want to see | |
214 | * the upper 5 bits of (14bit) major. | |
215 | */ | |
517b5e8c CH |
216 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
217 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
218 | return -EINVAL; | |
219 | rdev = sysv_encode_dev(rdev); | |
220 | } else { | |
221 | rdev = 0; | |
222 | } | |
1da177e4 | 223 | |
ef14f0c1 CH |
224 | if (IS_POSIXACL(dir)) { |
225 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
226 | if (IS_ERR(default_acl)) | |
227 | return -PTR_ERR(default_acl); | |
1da177e4 | 228 | |
e83f1eb6 CH |
229 | if (!default_acl) |
230 | mode &= ~current_umask(); | |
ef14f0c1 | 231 | } |
1da177e4 | 232 | |
517b5e8c CH |
233 | xfs_dentry_to_name(&name, dentry); |
234 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); | |
db0bb7ba CH |
235 | if (unlikely(error)) |
236 | goto out_free_acl; | |
446ada4a | 237 | |
01651646 | 238 | inode = VFS_I(ip); |
979ebab1 CH |
239 | |
240 | error = xfs_init_security(inode, dir); | |
db0bb7ba CH |
241 | if (unlikely(error)) |
242 | goto out_cleanup_inode; | |
243 | ||
244 | if (default_acl) { | |
ef14f0c1 | 245 | error = -xfs_inherit_acl(inode, default_acl); |
db0bb7ba CH |
246 | if (unlikely(error)) |
247 | goto out_cleanup_inode; | |
ef14f0c1 | 248 | posix_acl_release(default_acl); |
1da177e4 LT |
249 | } |
250 | ||
1da177e4 | 251 | |
db0bb7ba | 252 | d_instantiate(dentry, inode); |
db0bb7ba CH |
253 | return -error; |
254 | ||
255 | out_cleanup_inode: | |
8f112e3b | 256 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 257 | out_free_acl: |
ef14f0c1 | 258 | posix_acl_release(default_acl); |
1da177e4 LT |
259 | return -error; |
260 | } | |
261 | ||
262 | STATIC int | |
416c6d5b | 263 | xfs_vn_create( |
1da177e4 LT |
264 | struct inode *dir, |
265 | struct dentry *dentry, | |
266 | int mode, | |
267 | struct nameidata *nd) | |
268 | { | |
416c6d5b | 269 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
270 | } |
271 | ||
272 | STATIC int | |
416c6d5b | 273 | xfs_vn_mkdir( |
1da177e4 LT |
274 | struct inode *dir, |
275 | struct dentry *dentry, | |
276 | int mode) | |
277 | { | |
416c6d5b | 278 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
279 | } |
280 | ||
281 | STATIC struct dentry * | |
416c6d5b | 282 | xfs_vn_lookup( |
1da177e4 LT |
283 | struct inode *dir, |
284 | struct dentry *dentry, | |
285 | struct nameidata *nd) | |
286 | { | |
ef1f5e7a | 287 | struct xfs_inode *cip; |
556b8b16 | 288 | struct xfs_name name; |
1da177e4 LT |
289 | int error; |
290 | ||
291 | if (dentry->d_name.len >= MAXNAMELEN) | |
292 | return ERR_PTR(-ENAMETOOLONG); | |
293 | ||
556b8b16 | 294 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 295 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 296 | if (unlikely(error)) { |
1da177e4 LT |
297 | if (unlikely(error != ENOENT)) |
298 | return ERR_PTR(-error); | |
299 | d_add(dentry, NULL); | |
300 | return NULL; | |
301 | } | |
302 | ||
01651646 | 303 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
304 | } |
305 | ||
384f3ced BN |
306 | STATIC struct dentry * |
307 | xfs_vn_ci_lookup( | |
308 | struct inode *dir, | |
309 | struct dentry *dentry, | |
310 | struct nameidata *nd) | |
311 | { | |
312 | struct xfs_inode *ip; | |
313 | struct xfs_name xname; | |
314 | struct xfs_name ci_name; | |
315 | struct qstr dname; | |
316 | int error; | |
317 | ||
318 | if (dentry->d_name.len >= MAXNAMELEN) | |
319 | return ERR_PTR(-ENAMETOOLONG); | |
320 | ||
321 | xfs_dentry_to_name(&xname, dentry); | |
322 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
323 | if (unlikely(error)) { | |
324 | if (unlikely(error != ENOENT)) | |
325 | return ERR_PTR(-error); | |
866d5dc9 BN |
326 | /* |
327 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
328 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
329 | * with CI filesystems). | |
330 | */ | |
384f3ced BN |
331 | return NULL; |
332 | } | |
333 | ||
334 | /* if exact match, just splice and exit */ | |
335 | if (!ci_name.name) | |
01651646 | 336 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
337 | |
338 | /* else case-insensitive match... */ | |
339 | dname.name = ci_name.name; | |
340 | dname.len = ci_name.len; | |
e45b590b | 341 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
342 | kmem_free(ci_name.name); |
343 | return dentry; | |
344 | } | |
345 | ||
1da177e4 | 346 | STATIC int |
416c6d5b | 347 | xfs_vn_link( |
1da177e4 LT |
348 | struct dentry *old_dentry, |
349 | struct inode *dir, | |
350 | struct dentry *dentry) | |
351 | { | |
d9424b3c | 352 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 353 | struct xfs_name name; |
1da177e4 LT |
354 | int error; |
355 | ||
556b8b16 | 356 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 357 | |
556b8b16 | 358 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 359 | if (unlikely(error)) |
a3da7896 | 360 | return -error; |
a3da7896 | 361 | |
d9424b3c | 362 | atomic_inc(&inode->i_count); |
a3da7896 CH |
363 | d_instantiate(dentry, inode); |
364 | return 0; | |
1da177e4 LT |
365 | } |
366 | ||
367 | STATIC int | |
416c6d5b | 368 | xfs_vn_unlink( |
1da177e4 LT |
369 | struct inode *dir, |
370 | struct dentry *dentry) | |
371 | { | |
556b8b16 | 372 | struct xfs_name name; |
1da177e4 LT |
373 | int error; |
374 | ||
556b8b16 | 375 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 376 | |
e5700704 CH |
377 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
378 | if (error) | |
379 | return error; | |
380 | ||
381 | /* | |
382 | * With unlink, the VFS makes the dentry "negative": no inode, | |
383 | * but still hashed. This is incompatible with case-insensitive | |
384 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
385 | */ | |
386 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
387 | d_invalidate(dentry); | |
388 | return 0; | |
1da177e4 LT |
389 | } |
390 | ||
391 | STATIC int | |
416c6d5b | 392 | xfs_vn_symlink( |
1da177e4 LT |
393 | struct inode *dir, |
394 | struct dentry *dentry, | |
395 | const char *symname) | |
396 | { | |
3937be5b CH |
397 | struct inode *inode; |
398 | struct xfs_inode *cip = NULL; | |
556b8b16 | 399 | struct xfs_name name; |
1da177e4 | 400 | int error; |
3e5daf05 | 401 | mode_t mode; |
1da177e4 | 402 | |
3e5daf05 | 403 | mode = S_IFLNK | |
ce3b0f8d | 404 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 405 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 406 | |
556b8b16 | 407 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); |
3937be5b CH |
408 | if (unlikely(error)) |
409 | goto out; | |
410 | ||
01651646 | 411 | inode = VFS_I(cip); |
3937be5b CH |
412 | |
413 | error = xfs_init_security(inode, dir); | |
414 | if (unlikely(error)) | |
415 | goto out_cleanup_inode; | |
416 | ||
417 | d_instantiate(dentry, inode); | |
3937be5b CH |
418 | return 0; |
419 | ||
420 | out_cleanup_inode: | |
8f112e3b | 421 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 422 | out: |
1da177e4 LT |
423 | return -error; |
424 | } | |
425 | ||
1da177e4 | 426 | STATIC int |
416c6d5b | 427 | xfs_vn_rename( |
1da177e4 LT |
428 | struct inode *odir, |
429 | struct dentry *odentry, | |
430 | struct inode *ndir, | |
431 | struct dentry *ndentry) | |
432 | { | |
433 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
434 | struct xfs_name oname; |
435 | struct xfs_name nname; | |
1da177e4 | 436 | |
556b8b16 BN |
437 | xfs_dentry_to_name(&oname, odentry); |
438 | xfs_dentry_to_name(&nname, ndentry); | |
439 | ||
e5700704 | 440 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
441 | XFS_I(ndir), &nname, new_inode ? |
442 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
443 | } |
444 | ||
445 | /* | |
446 | * careful here - this function can get called recursively, so | |
447 | * we need to be very careful about how much stack we use. | |
448 | * uio is kmalloced for this reason... | |
449 | */ | |
008b150a | 450 | STATIC void * |
416c6d5b | 451 | xfs_vn_follow_link( |
1da177e4 LT |
452 | struct dentry *dentry, |
453 | struct nameidata *nd) | |
454 | { | |
1da177e4 | 455 | char *link; |
804c83c3 | 456 | int error = -ENOMEM; |
1da177e4 | 457 | |
f52720ca | 458 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
459 | if (!link) |
460 | goto out_err; | |
1da177e4 | 461 | |
739bfb2a | 462 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
463 | if (unlikely(error)) |
464 | goto out_kfree; | |
1da177e4 LT |
465 | |
466 | nd_set_link(nd, link); | |
008b150a | 467 | return NULL; |
804c83c3 CH |
468 | |
469 | out_kfree: | |
470 | kfree(link); | |
471 | out_err: | |
472 | nd_set_link(nd, ERR_PTR(error)); | |
473 | return NULL; | |
1da177e4 LT |
474 | } |
475 | ||
cde410a9 | 476 | STATIC void |
416c6d5b | 477 | xfs_vn_put_link( |
cde410a9 NS |
478 | struct dentry *dentry, |
479 | struct nameidata *nd, | |
480 | void *p) | |
1da177e4 | 481 | { |
cde410a9 NS |
482 | char *s = nd_get_link(nd); |
483 | ||
1da177e4 LT |
484 | if (!IS_ERR(s)) |
485 | kfree(s); | |
486 | } | |
487 | ||
1da177e4 | 488 | STATIC int |
416c6d5b | 489 | xfs_vn_getattr( |
c43f4087 CH |
490 | struct vfsmount *mnt, |
491 | struct dentry *dentry, | |
492 | struct kstat *stat) | |
1da177e4 | 493 | { |
c43f4087 CH |
494 | struct inode *inode = dentry->d_inode; |
495 | struct xfs_inode *ip = XFS_I(inode); | |
496 | struct xfs_mount *mp = ip->i_mount; | |
497 | ||
498 | xfs_itrace_entry(ip); | |
499 | ||
500 | if (XFS_FORCED_SHUTDOWN(mp)) | |
501 | return XFS_ERROR(EIO); | |
502 | ||
503 | stat->size = XFS_ISIZE(ip); | |
504 | stat->dev = inode->i_sb->s_dev; | |
505 | stat->mode = ip->i_d.di_mode; | |
506 | stat->nlink = ip->i_d.di_nlink; | |
507 | stat->uid = ip->i_d.di_uid; | |
508 | stat->gid = ip->i_d.di_gid; | |
509 | stat->ino = ip->i_ino; | |
c43f4087 | 510 | stat->atime = inode->i_atime; |
f9581b14 CH |
511 | stat->mtime = inode->i_mtime; |
512 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
513 | stat->blocks = |
514 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
515 | ||
516 | ||
517 | switch (inode->i_mode & S_IFMT) { | |
518 | case S_IFBLK: | |
519 | case S_IFCHR: | |
520 | stat->blksize = BLKDEV_IOSIZE; | |
521 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
522 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
523 | break; | |
524 | default: | |
71ddabb9 | 525 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
526 | /* |
527 | * If the file blocks are being allocated from a | |
528 | * realtime volume, then return the inode's realtime | |
529 | * extent size or the realtime volume's extent size. | |
530 | */ | |
531 | stat->blksize = | |
532 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
533 | } else | |
534 | stat->blksize = xfs_preferred_iosize(mp); | |
535 | stat->rdev = 0; | |
536 | break; | |
69e23b9a | 537 | } |
c43f4087 CH |
538 | |
539 | return 0; | |
1da177e4 LT |
540 | } |
541 | ||
542 | STATIC int | |
416c6d5b | 543 | xfs_vn_setattr( |
1da177e4 | 544 | struct dentry *dentry, |
0f285c8a | 545 | struct iattr *iattr) |
1da177e4 | 546 | { |
ea5a3dc8 | 547 | return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
1da177e4 LT |
548 | } |
549 | ||
d87dd636 DC |
550 | /* |
551 | * block_truncate_page can return an error, but we can't propagate it | |
552 | * at all here. Leave a complaint + stack trace in the syslog because | |
553 | * this could be bad. If it is bad, we need to propagate the error further. | |
554 | */ | |
1da177e4 | 555 | STATIC void |
416c6d5b | 556 | xfs_vn_truncate( |
1da177e4 LT |
557 | struct inode *inode) |
558 | { | |
d87dd636 DC |
559 | int error; |
560 | error = block_truncate_page(inode->i_mapping, inode->i_size, | |
561 | xfs_get_blocks); | |
562 | WARN_ON(error); | |
1da177e4 LT |
563 | } |
564 | ||
3ed65264 DC |
565 | STATIC long |
566 | xfs_vn_fallocate( | |
567 | struct inode *inode, | |
568 | int mode, | |
569 | loff_t offset, | |
570 | loff_t len) | |
571 | { | |
572 | long error; | |
573 | loff_t new_size = 0; | |
574 | xfs_flock64_t bf; | |
575 | xfs_inode_t *ip = XFS_I(inode); | |
576 | ||
577 | /* preallocation on directories not yet supported */ | |
578 | error = -ENODEV; | |
579 | if (S_ISDIR(inode->i_mode)) | |
580 | goto out_error; | |
581 | ||
582 | bf.l_whence = 0; | |
583 | bf.l_start = offset; | |
584 | bf.l_len = len; | |
585 | ||
586 | xfs_ilock(ip, XFS_IOLOCK_EXCL); | |
44a743f6 JG |
587 | error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, |
588 | 0, XFS_ATTR_NOLOCK); | |
3ed65264 DC |
589 | if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && |
590 | offset + len > i_size_read(inode)) | |
591 | new_size = offset + len; | |
592 | ||
593 | /* Change file size if needed */ | |
594 | if (new_size) { | |
0f285c8a | 595 | struct iattr iattr; |
3ed65264 | 596 | |
0f285c8a CH |
597 | iattr.ia_valid = ATTR_SIZE; |
598 | iattr.ia_size = new_size; | |
44a743f6 | 599 | error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); |
3ed65264 DC |
600 | } |
601 | ||
602 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); | |
603 | out_error: | |
604 | return error; | |
605 | } | |
1da177e4 | 606 | |
f35642e2 ES |
607 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
608 | ||
609 | /* | |
610 | * Call fiemap helper to fill in user data. | |
611 | * Returns positive errors to xfs_getbmap. | |
612 | */ | |
613 | STATIC int | |
614 | xfs_fiemap_format( | |
615 | void **arg, | |
616 | struct getbmapx *bmv, | |
617 | int *full) | |
618 | { | |
619 | int error; | |
620 | struct fiemap_extent_info *fieinfo = *arg; | |
621 | u32 fiemap_flags = 0; | |
622 | u64 logical, physical, length; | |
623 | ||
624 | /* Do nothing for a hole */ | |
625 | if (bmv->bmv_block == -1LL) | |
626 | return 0; | |
627 | ||
628 | logical = BBTOB(bmv->bmv_offset); | |
629 | physical = BBTOB(bmv->bmv_block); | |
630 | length = BBTOB(bmv->bmv_length); | |
631 | ||
632 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
633 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
634 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
635 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
636 | physical = 0; /* no block yet */ | |
637 | } | |
638 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
639 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
640 | ||
641 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
642 | length, fiemap_flags); | |
643 | if (error > 0) { | |
644 | error = 0; | |
645 | *full = 1; /* user array now full */ | |
646 | } | |
647 | ||
648 | return -error; | |
649 | } | |
650 | ||
651 | STATIC int | |
652 | xfs_vn_fiemap( | |
653 | struct inode *inode, | |
654 | struct fiemap_extent_info *fieinfo, | |
655 | u64 start, | |
656 | u64 length) | |
657 | { | |
658 | xfs_inode_t *ip = XFS_I(inode); | |
659 | struct getbmapx bm; | |
660 | int error; | |
661 | ||
662 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
663 | if (error) | |
664 | return error; | |
665 | ||
666 | /* Set up bmap header for xfs internal routine */ | |
667 | bm.bmv_offset = BTOBB(start); | |
668 | /* Special case for whole file */ | |
669 | if (length == FIEMAP_MAX_OFFSET) | |
670 | bm.bmv_length = -1LL; | |
671 | else | |
672 | bm.bmv_length = BTOBB(length); | |
673 | ||
97db39a1 ES |
674 | /* We add one because in getbmap world count includes the header */ |
675 | bm.bmv_count = fieinfo->fi_extents_max + 1; | |
f35642e2 ES |
676 | bm.bmv_iflags = BMV_IF_PREALLOC; |
677 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) | |
678 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
679 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
680 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
681 | ||
682 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
683 | if (error) | |
684 | return -error; | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
41be8bed | 689 | static const struct inode_operations xfs_inode_operations = { |
18f4c644 | 690 | .check_acl = xfs_check_acl, |
416c6d5b NS |
691 | .truncate = xfs_vn_truncate, |
692 | .getattr = xfs_vn_getattr, | |
693 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
694 | .setxattr = generic_setxattr, |
695 | .getxattr = generic_getxattr, | |
696 | .removexattr = generic_removexattr, | |
416c6d5b | 697 | .listxattr = xfs_vn_listxattr, |
3ed65264 | 698 | .fallocate = xfs_vn_fallocate, |
f35642e2 | 699 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
700 | }; |
701 | ||
41be8bed | 702 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
703 | .create = xfs_vn_create, |
704 | .lookup = xfs_vn_lookup, | |
705 | .link = xfs_vn_link, | |
706 | .unlink = xfs_vn_unlink, | |
707 | .symlink = xfs_vn_symlink, | |
708 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
709 | /* |
710 | * Yes, XFS uses the same method for rmdir and unlink. | |
711 | * | |
712 | * There are some subtile differences deeper in the code, | |
713 | * but we use S_ISDIR to check for those. | |
714 | */ | |
715 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
716 | .mknod = xfs_vn_mknod, |
717 | .rename = xfs_vn_rename, | |
18f4c644 | 718 | .check_acl = xfs_check_acl, |
416c6d5b NS |
719 | .getattr = xfs_vn_getattr, |
720 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
721 | .setxattr = generic_setxattr, |
722 | .getxattr = generic_getxattr, | |
723 | .removexattr = generic_removexattr, | |
416c6d5b | 724 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
725 | }; |
726 | ||
41be8bed | 727 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
728 | .create = xfs_vn_create, |
729 | .lookup = xfs_vn_ci_lookup, | |
730 | .link = xfs_vn_link, | |
731 | .unlink = xfs_vn_unlink, | |
732 | .symlink = xfs_vn_symlink, | |
733 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
734 | /* |
735 | * Yes, XFS uses the same method for rmdir and unlink. | |
736 | * | |
737 | * There are some subtile differences deeper in the code, | |
738 | * but we use S_ISDIR to check for those. | |
739 | */ | |
740 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
741 | .mknod = xfs_vn_mknod, |
742 | .rename = xfs_vn_rename, | |
18f4c644 | 743 | .check_acl = xfs_check_acl, |
384f3ced BN |
744 | .getattr = xfs_vn_getattr, |
745 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
746 | .setxattr = generic_setxattr, |
747 | .getxattr = generic_getxattr, | |
748 | .removexattr = generic_removexattr, | |
384f3ced | 749 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
750 | }; |
751 | ||
41be8bed | 752 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 753 | .readlink = generic_readlink, |
416c6d5b NS |
754 | .follow_link = xfs_vn_follow_link, |
755 | .put_link = xfs_vn_put_link, | |
18f4c644 | 756 | .check_acl = xfs_check_acl, |
416c6d5b NS |
757 | .getattr = xfs_vn_getattr, |
758 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
759 | .setxattr = generic_setxattr, |
760 | .getxattr = generic_getxattr, | |
761 | .removexattr = generic_removexattr, | |
416c6d5b | 762 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 763 | }; |
41be8bed CH |
764 | |
765 | STATIC void | |
766 | xfs_diflags_to_iflags( | |
767 | struct inode *inode, | |
768 | struct xfs_inode *ip) | |
769 | { | |
770 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
771 | inode->i_flags |= S_IMMUTABLE; | |
772 | else | |
773 | inode->i_flags &= ~S_IMMUTABLE; | |
774 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
775 | inode->i_flags |= S_APPEND; | |
776 | else | |
777 | inode->i_flags &= ~S_APPEND; | |
778 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
779 | inode->i_flags |= S_SYNC; | |
780 | else | |
781 | inode->i_flags &= ~S_SYNC; | |
782 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
783 | inode->i_flags |= S_NOATIME; | |
784 | else | |
785 | inode->i_flags &= ~S_NOATIME; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Initialize the Linux inode, set up the operation vectors and | |
790 | * unlock the inode. | |
791 | * | |
792 | * When reading existing inodes from disk this is called directly | |
793 | * from xfs_iget, when creating a new inode it is called from | |
794 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
795 | * |
796 | * We are always called with an uninitialised linux inode here. | |
797 | * We need to initialise the necessary fields and take a reference | |
798 | * on it. | |
41be8bed CH |
799 | */ |
800 | void | |
801 | xfs_setup_inode( | |
802 | struct xfs_inode *ip) | |
803 | { | |
bf904248 DC |
804 | struct inode *inode = &ip->i_vnode; |
805 | ||
806 | inode->i_ino = ip->i_ino; | |
eaff8079 | 807 | inode->i_state = I_NEW; |
bf904248 | 808 | inode_add_to_lists(ip->i_mount->m_super, inode); |
41be8bed CH |
809 | |
810 | inode->i_mode = ip->i_d.di_mode; | |
811 | inode->i_nlink = ip->i_d.di_nlink; | |
812 | inode->i_uid = ip->i_d.di_uid; | |
813 | inode->i_gid = ip->i_d.di_gid; | |
814 | ||
815 | switch (inode->i_mode & S_IFMT) { | |
816 | case S_IFBLK: | |
817 | case S_IFCHR: | |
818 | inode->i_rdev = | |
819 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
820 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
821 | break; | |
822 | default: | |
823 | inode->i_rdev = 0; | |
824 | break; | |
825 | } | |
826 | ||
827 | inode->i_generation = ip->i_d.di_gen; | |
828 | i_size_write(inode, ip->i_d.di_size); | |
829 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
830 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
831 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
832 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
833 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
834 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
835 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
836 | |
837 | switch (inode->i_mode & S_IFMT) { | |
838 | case S_IFREG: | |
839 | inode->i_op = &xfs_inode_operations; | |
840 | inode->i_fop = &xfs_file_operations; | |
841 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
842 | break; | |
843 | case S_IFDIR: | |
844 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
845 | inode->i_op = &xfs_dir_ci_inode_operations; | |
846 | else | |
847 | inode->i_op = &xfs_dir_inode_operations; | |
848 | inode->i_fop = &xfs_dir_file_operations; | |
849 | break; | |
850 | case S_IFLNK: | |
851 | inode->i_op = &xfs_symlink_inode_operations; | |
852 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
853 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
854 | break; | |
855 | default: | |
856 | inode->i_op = &xfs_inode_operations; | |
857 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
858 | break; | |
859 | } | |
860 | ||
861 | xfs_iflags_clear(ip, XFS_INEW); | |
862 | barrier(); | |
863 | ||
864 | unlock_new_inode(inode); | |
865 | } |