Commit | Line | Data |
---|---|---|
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" | |
46 | #include "xfs_acl.h" | |
1da177e4 LT |
47 | #include "xfs_attr.h" |
48 | #include "xfs_buf_item.h" | |
49 | #include "xfs_utils.h" | |
739bfb2a | 50 | #include "xfs_vnodeops.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 CH |
60 | /* |
61 | * Bring the atime in the XFS inode uptodate. | |
62 | * Used before logging the inode to disk or when the Linux inode goes away. | |
63 | */ | |
64 | void | |
65 | xfs_synchronize_atime( | |
66 | xfs_inode_t *ip) | |
67 | { | |
01651646 | 68 | struct inode *inode = VFS_I(ip); |
42fe2b1f | 69 | |
bf904248 | 70 | if (!(inode->i_state & I_CLEAR)) { |
af048193 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; | |
42fe2b1f CH |
73 | } |
74 | } | |
75 | ||
5d51eff4 | 76 | /* |
bf904248 | 77 | * If the linux inode is valid, mark it dirty. |
5d51eff4 DC |
78 | * Used when commiting a dirty inode into a transaction so that |
79 | * the inode will get written back by the linux code | |
80 | */ | |
81 | void | |
82 | xfs_mark_inode_dirty_sync( | |
83 | xfs_inode_t *ip) | |
84 | { | |
01651646 | 85 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 86 | |
bf904248 | 87 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) |
af048193 | 88 | mark_inode_dirty_sync(inode); |
5d51eff4 DC |
89 | } |
90 | ||
4aeb664c NS |
91 | /* |
92 | * Change the requested timestamp in the given inode. | |
93 | * We don't lock across timestamp updates, and we don't log them but | |
94 | * we do record the fact that there is dirty information in core. | |
4aeb664c NS |
95 | */ |
96 | void | |
97 | xfs_ichgtime( | |
98 | xfs_inode_t *ip, | |
99 | int flags) | |
100 | { | |
e4f75291 | 101 | struct inode *inode = VFS_I(ip); |
4aeb664c | 102 | timespec_t tv; |
8e5975c8 | 103 | int sync_it = 0; |
4aeb664c | 104 | |
8e5975c8 CH |
105 | tv = current_fs_time(inode->i_sb); |
106 | ||
107 | if ((flags & XFS_ICHGTIME_MOD) && | |
108 | !timespec_equal(&inode->i_mtime, &tv)) { | |
4aeb664c NS |
109 | inode->i_mtime = tv; |
110 | ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec; | |
111 | ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec; | |
8e5975c8 | 112 | sync_it = 1; |
4aeb664c | 113 | } |
8e5975c8 CH |
114 | if ((flags & XFS_ICHGTIME_CHG) && |
115 | !timespec_equal(&inode->i_ctime, &tv)) { | |
4aeb664c NS |
116 | inode->i_ctime = tv; |
117 | ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec; | |
118 | ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec; | |
8e5975c8 | 119 | sync_it = 1; |
4aeb664c NS |
120 | } |
121 | ||
122 | /* | |
123 | * We update the i_update_core field _after_ changing | |
124 | * the timestamps in order to coordinate properly with | |
125 | * xfs_iflush() so that we don't lose timestamp updates. | |
126 | * This keeps us from having to hold the inode lock | |
127 | * while doing this. We use the SYNCHRONIZE macro to | |
128 | * ensure that the compiler does not reorder the update | |
129 | * of i_update_core above the timestamp updates above. | |
130 | */ | |
8e5975c8 CH |
131 | if (sync_it) { |
132 | SYNCHRONIZE(); | |
133 | ip->i_update_core = 1; | |
94b97e39 | 134 | xfs_mark_inode_dirty_sync(ip); |
8e5975c8 | 135 | } |
4aeb664c NS |
136 | } |
137 | ||
446ada4a NS |
138 | /* |
139 | * Hook in SELinux. This is not quite correct yet, what we really need | |
140 | * here (as we do for default ACLs) is a mechanism by which creation of | |
141 | * these attrs can be journalled at inode creation time (along with the | |
142 | * inode, of course, such that log replay can't cause these to be lost). | |
143 | */ | |
144 | STATIC int | |
416c6d5b | 145 | xfs_init_security( |
af048193 | 146 | struct inode *inode, |
446ada4a NS |
147 | struct inode *dir) |
148 | { | |
af048193 | 149 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
150 | size_t length; |
151 | void *value; | |
152 | char *name; | |
153 | int error; | |
154 | ||
af048193 CH |
155 | error = security_inode_init_security(inode, dir, &name, |
156 | &value, &length); | |
446ada4a NS |
157 | if (error) { |
158 | if (error == -EOPNOTSUPP) | |
159 | return 0; | |
160 | return -error; | |
161 | } | |
162 | ||
af048193 | 163 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
164 | |
165 | kfree(name); | |
166 | kfree(value); | |
167 | return error; | |
168 | } | |
169 | ||
556b8b16 BN |
170 | static void |
171 | xfs_dentry_to_name( | |
172 | struct xfs_name *namep, | |
173 | struct dentry *dentry) | |
174 | { | |
175 | namep->name = dentry->d_name.name; | |
176 | namep->len = dentry->d_name.len; | |
177 | } | |
178 | ||
7989cb8e | 179 | STATIC void |
416c6d5b | 180 | xfs_cleanup_inode( |
739bfb2a | 181 | struct inode *dir, |
af048193 | 182 | struct inode *inode, |
8f112e3b | 183 | struct dentry *dentry) |
3a69c7dc | 184 | { |
556b8b16 | 185 | struct xfs_name teardown; |
3a69c7dc YL |
186 | |
187 | /* Oh, the horror. | |
220b5284 | 188 | * If we can't add the ACL or we fail in |
416c6d5b | 189 | * xfs_init_security we must back out. |
3a69c7dc YL |
190 | * ENOSPC can hit here, among other things. |
191 | */ | |
556b8b16 | 192 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 193 | |
8f112e3b | 194 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 195 | iput(inode); |
3a69c7dc YL |
196 | } |
197 | ||
1da177e4 | 198 | STATIC int |
416c6d5b | 199 | xfs_vn_mknod( |
1da177e4 LT |
200 | struct inode *dir, |
201 | struct dentry *dentry, | |
202 | int mode, | |
203 | dev_t rdev) | |
204 | { | |
db0bb7ba | 205 | struct inode *inode; |
979ebab1 | 206 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 207 | struct posix_acl *default_acl = NULL; |
556b8b16 | 208 | struct xfs_name name; |
1da177e4 LT |
209 | int error; |
210 | ||
211 | /* | |
212 | * Irix uses Missed'em'V split, but doesn't want to see | |
213 | * the upper 5 bits of (14bit) major. | |
214 | */ | |
517b5e8c CH |
215 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
216 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
217 | return -EINVAL; | |
218 | rdev = sysv_encode_dev(rdev); | |
219 | } else { | |
220 | rdev = 0; | |
221 | } | |
1da177e4 | 222 | |
ef14f0c1 CH |
223 | if (IS_POSIXACL(dir)) { |
224 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
225 | if (IS_ERR(default_acl)) | |
226 | return -PTR_ERR(default_acl); | |
1da177e4 | 227 | |
e83f1eb6 CH |
228 | if (!default_acl) |
229 | mode &= ~current_umask(); | |
ef14f0c1 | 230 | } |
1da177e4 | 231 | |
517b5e8c CH |
232 | xfs_dentry_to_name(&name, dentry); |
233 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); | |
db0bb7ba CH |
234 | if (unlikely(error)) |
235 | goto out_free_acl; | |
446ada4a | 236 | |
01651646 | 237 | inode = VFS_I(ip); |
979ebab1 CH |
238 | |
239 | error = xfs_init_security(inode, dir); | |
db0bb7ba CH |
240 | if (unlikely(error)) |
241 | goto out_cleanup_inode; | |
242 | ||
243 | if (default_acl) { | |
ef14f0c1 | 244 | error = -xfs_inherit_acl(inode, default_acl); |
db0bb7ba CH |
245 | if (unlikely(error)) |
246 | goto out_cleanup_inode; | |
ef14f0c1 | 247 | posix_acl_release(default_acl); |
1da177e4 LT |
248 | } |
249 | ||
1da177e4 | 250 | |
db0bb7ba | 251 | d_instantiate(dentry, inode); |
db0bb7ba CH |
252 | return -error; |
253 | ||
254 | out_cleanup_inode: | |
8f112e3b | 255 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 256 | out_free_acl: |
ef14f0c1 | 257 | posix_acl_release(default_acl); |
1da177e4 LT |
258 | return -error; |
259 | } | |
260 | ||
261 | STATIC int | |
416c6d5b | 262 | xfs_vn_create( |
1da177e4 LT |
263 | struct inode *dir, |
264 | struct dentry *dentry, | |
265 | int mode, | |
266 | struct nameidata *nd) | |
267 | { | |
416c6d5b | 268 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
269 | } |
270 | ||
271 | STATIC int | |
416c6d5b | 272 | xfs_vn_mkdir( |
1da177e4 LT |
273 | struct inode *dir, |
274 | struct dentry *dentry, | |
275 | int mode) | |
276 | { | |
416c6d5b | 277 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
278 | } |
279 | ||
280 | STATIC struct dentry * | |
416c6d5b | 281 | xfs_vn_lookup( |
1da177e4 LT |
282 | struct inode *dir, |
283 | struct dentry *dentry, | |
284 | struct nameidata *nd) | |
285 | { | |
ef1f5e7a | 286 | struct xfs_inode *cip; |
556b8b16 | 287 | struct xfs_name name; |
1da177e4 LT |
288 | int error; |
289 | ||
290 | if (dentry->d_name.len >= MAXNAMELEN) | |
291 | return ERR_PTR(-ENAMETOOLONG); | |
292 | ||
556b8b16 | 293 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 294 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 295 | if (unlikely(error)) { |
1da177e4 LT |
296 | if (unlikely(error != ENOENT)) |
297 | return ERR_PTR(-error); | |
298 | d_add(dentry, NULL); | |
299 | return NULL; | |
300 | } | |
301 | ||
01651646 | 302 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
303 | } |
304 | ||
384f3ced BN |
305 | STATIC struct dentry * |
306 | xfs_vn_ci_lookup( | |
307 | struct inode *dir, | |
308 | struct dentry *dentry, | |
309 | struct nameidata *nd) | |
310 | { | |
311 | struct xfs_inode *ip; | |
312 | struct xfs_name xname; | |
313 | struct xfs_name ci_name; | |
314 | struct qstr dname; | |
315 | int error; | |
316 | ||
317 | if (dentry->d_name.len >= MAXNAMELEN) | |
318 | return ERR_PTR(-ENAMETOOLONG); | |
319 | ||
320 | xfs_dentry_to_name(&xname, dentry); | |
321 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
322 | if (unlikely(error)) { | |
323 | if (unlikely(error != ENOENT)) | |
324 | return ERR_PTR(-error); | |
866d5dc9 BN |
325 | /* |
326 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
327 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
328 | * with CI filesystems). | |
329 | */ | |
384f3ced BN |
330 | return NULL; |
331 | } | |
332 | ||
333 | /* if exact match, just splice and exit */ | |
334 | if (!ci_name.name) | |
01651646 | 335 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
336 | |
337 | /* else case-insensitive match... */ | |
338 | dname.name = ci_name.name; | |
339 | dname.len = ci_name.len; | |
e45b590b | 340 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
341 | kmem_free(ci_name.name); |
342 | return dentry; | |
343 | } | |
344 | ||
1da177e4 | 345 | STATIC int |
416c6d5b | 346 | xfs_vn_link( |
1da177e4 LT |
347 | struct dentry *old_dentry, |
348 | struct inode *dir, | |
349 | struct dentry *dentry) | |
350 | { | |
d9424b3c | 351 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 352 | struct xfs_name name; |
1da177e4 LT |
353 | int error; |
354 | ||
556b8b16 | 355 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 356 | |
556b8b16 | 357 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 358 | if (unlikely(error)) |
a3da7896 | 359 | return -error; |
a3da7896 | 360 | |
d9424b3c | 361 | atomic_inc(&inode->i_count); |
a3da7896 CH |
362 | d_instantiate(dentry, inode); |
363 | return 0; | |
1da177e4 LT |
364 | } |
365 | ||
366 | STATIC int | |
416c6d5b | 367 | xfs_vn_unlink( |
1da177e4 LT |
368 | struct inode *dir, |
369 | struct dentry *dentry) | |
370 | { | |
556b8b16 | 371 | struct xfs_name name; |
1da177e4 LT |
372 | int error; |
373 | ||
556b8b16 | 374 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 375 | |
e5700704 CH |
376 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
377 | if (error) | |
378 | return error; | |
379 | ||
380 | /* | |
381 | * With unlink, the VFS makes the dentry "negative": no inode, | |
382 | * but still hashed. This is incompatible with case-insensitive | |
383 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
384 | */ | |
385 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
386 | d_invalidate(dentry); | |
387 | return 0; | |
1da177e4 LT |
388 | } |
389 | ||
390 | STATIC int | |
416c6d5b | 391 | xfs_vn_symlink( |
1da177e4 LT |
392 | struct inode *dir, |
393 | struct dentry *dentry, | |
394 | const char *symname) | |
395 | { | |
3937be5b CH |
396 | struct inode *inode; |
397 | struct xfs_inode *cip = NULL; | |
556b8b16 | 398 | struct xfs_name name; |
1da177e4 | 399 | int error; |
3e5daf05 | 400 | mode_t mode; |
1da177e4 | 401 | |
3e5daf05 | 402 | mode = S_IFLNK | |
ce3b0f8d | 403 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 404 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 405 | |
556b8b16 | 406 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); |
3937be5b CH |
407 | if (unlikely(error)) |
408 | goto out; | |
409 | ||
01651646 | 410 | inode = VFS_I(cip); |
3937be5b CH |
411 | |
412 | error = xfs_init_security(inode, dir); | |
413 | if (unlikely(error)) | |
414 | goto out_cleanup_inode; | |
415 | ||
416 | d_instantiate(dentry, inode); | |
3937be5b CH |
417 | return 0; |
418 | ||
419 | out_cleanup_inode: | |
8f112e3b | 420 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 421 | out: |
1da177e4 LT |
422 | return -error; |
423 | } | |
424 | ||
1da177e4 | 425 | STATIC int |
416c6d5b | 426 | xfs_vn_rename( |
1da177e4 LT |
427 | struct inode *odir, |
428 | struct dentry *odentry, | |
429 | struct inode *ndir, | |
430 | struct dentry *ndentry) | |
431 | { | |
432 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
433 | struct xfs_name oname; |
434 | struct xfs_name nname; | |
1da177e4 | 435 | |
556b8b16 BN |
436 | xfs_dentry_to_name(&oname, odentry); |
437 | xfs_dentry_to_name(&nname, ndentry); | |
438 | ||
e5700704 | 439 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
440 | XFS_I(ndir), &nname, new_inode ? |
441 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
442 | } |
443 | ||
444 | /* | |
445 | * careful here - this function can get called recursively, so | |
446 | * we need to be very careful about how much stack we use. | |
447 | * uio is kmalloced for this reason... | |
448 | */ | |
008b150a | 449 | STATIC void * |
416c6d5b | 450 | xfs_vn_follow_link( |
1da177e4 LT |
451 | struct dentry *dentry, |
452 | struct nameidata *nd) | |
453 | { | |
1da177e4 | 454 | char *link; |
804c83c3 | 455 | int error = -ENOMEM; |
1da177e4 | 456 | |
f52720ca | 457 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
458 | if (!link) |
459 | goto out_err; | |
1da177e4 | 460 | |
739bfb2a | 461 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
462 | if (unlikely(error)) |
463 | goto out_kfree; | |
1da177e4 LT |
464 | |
465 | nd_set_link(nd, link); | |
008b150a | 466 | return NULL; |
804c83c3 CH |
467 | |
468 | out_kfree: | |
469 | kfree(link); | |
470 | out_err: | |
471 | nd_set_link(nd, ERR_PTR(error)); | |
472 | return NULL; | |
1da177e4 LT |
473 | } |
474 | ||
cde410a9 | 475 | STATIC void |
416c6d5b | 476 | xfs_vn_put_link( |
cde410a9 NS |
477 | struct dentry *dentry, |
478 | struct nameidata *nd, | |
479 | void *p) | |
1da177e4 | 480 | { |
cde410a9 NS |
481 | char *s = nd_get_link(nd); |
482 | ||
1da177e4 LT |
483 | if (!IS_ERR(s)) |
484 | kfree(s); | |
485 | } | |
486 | ||
1da177e4 | 487 | STATIC int |
416c6d5b | 488 | xfs_vn_permission( |
4576758d | 489 | struct inode *inode, |
e6305c43 | 490 | int mask) |
1da177e4 | 491 | { |
4576758d | 492 | return generic_permission(inode, mask, xfs_check_acl); |
1da177e4 | 493 | } |
1da177e4 LT |
494 | |
495 | STATIC int | |
416c6d5b | 496 | xfs_vn_getattr( |
c43f4087 CH |
497 | struct vfsmount *mnt, |
498 | struct dentry *dentry, | |
499 | struct kstat *stat) | |
1da177e4 | 500 | { |
c43f4087 CH |
501 | struct inode *inode = dentry->d_inode; |
502 | struct xfs_inode *ip = XFS_I(inode); | |
503 | struct xfs_mount *mp = ip->i_mount; | |
504 | ||
505 | xfs_itrace_entry(ip); | |
506 | ||
507 | if (XFS_FORCED_SHUTDOWN(mp)) | |
508 | return XFS_ERROR(EIO); | |
509 | ||
510 | stat->size = XFS_ISIZE(ip); | |
511 | stat->dev = inode->i_sb->s_dev; | |
512 | stat->mode = ip->i_d.di_mode; | |
513 | stat->nlink = ip->i_d.di_nlink; | |
514 | stat->uid = ip->i_d.di_uid; | |
515 | stat->gid = ip->i_d.di_gid; | |
516 | stat->ino = ip->i_ino; | |
c43f4087 CH |
517 | stat->atime = inode->i_atime; |
518 | stat->mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
519 | stat->mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
520 | stat->ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
521 | stat->ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
522 | stat->blocks = | |
523 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
524 | ||
525 | ||
526 | switch (inode->i_mode & S_IFMT) { | |
527 | case S_IFBLK: | |
528 | case S_IFCHR: | |
529 | stat->blksize = BLKDEV_IOSIZE; | |
530 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
531 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
532 | break; | |
533 | default: | |
71ddabb9 | 534 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
535 | /* |
536 | * If the file blocks are being allocated from a | |
537 | * realtime volume, then return the inode's realtime | |
538 | * extent size or the realtime volume's extent size. | |
539 | */ | |
540 | stat->blksize = | |
541 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
542 | } else | |
543 | stat->blksize = xfs_preferred_iosize(mp); | |
544 | stat->rdev = 0; | |
545 | break; | |
69e23b9a | 546 | } |
c43f4087 CH |
547 | |
548 | return 0; | |
1da177e4 LT |
549 | } |
550 | ||
551 | STATIC int | |
416c6d5b | 552 | xfs_vn_setattr( |
1da177e4 | 553 | struct dentry *dentry, |
0f285c8a | 554 | struct iattr *iattr) |
1da177e4 | 555 | { |
ea5a3dc8 | 556 | return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
1da177e4 LT |
557 | } |
558 | ||
d87dd636 DC |
559 | /* |
560 | * block_truncate_page can return an error, but we can't propagate it | |
561 | * at all here. Leave a complaint + stack trace in the syslog because | |
562 | * this could be bad. If it is bad, we need to propagate the error further. | |
563 | */ | |
1da177e4 | 564 | STATIC void |
416c6d5b | 565 | xfs_vn_truncate( |
1da177e4 LT |
566 | struct inode *inode) |
567 | { | |
d87dd636 DC |
568 | int error; |
569 | error = block_truncate_page(inode->i_mapping, inode->i_size, | |
570 | xfs_get_blocks); | |
571 | WARN_ON(error); | |
1da177e4 LT |
572 | } |
573 | ||
3ed65264 DC |
574 | STATIC long |
575 | xfs_vn_fallocate( | |
576 | struct inode *inode, | |
577 | int mode, | |
578 | loff_t offset, | |
579 | loff_t len) | |
580 | { | |
581 | long error; | |
582 | loff_t new_size = 0; | |
583 | xfs_flock64_t bf; | |
584 | xfs_inode_t *ip = XFS_I(inode); | |
585 | ||
586 | /* preallocation on directories not yet supported */ | |
587 | error = -ENODEV; | |
588 | if (S_ISDIR(inode->i_mode)) | |
589 | goto out_error; | |
590 | ||
591 | bf.l_whence = 0; | |
592 | bf.l_start = offset; | |
593 | bf.l_len = len; | |
594 | ||
595 | xfs_ilock(ip, XFS_IOLOCK_EXCL); | |
596 | error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, | |
ea5a3dc8 | 597 | 0, XFS_ATTR_NOLOCK); |
3ed65264 DC |
598 | if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && |
599 | offset + len > i_size_read(inode)) | |
600 | new_size = offset + len; | |
601 | ||
602 | /* Change file size if needed */ | |
603 | if (new_size) { | |
0f285c8a | 604 | struct iattr iattr; |
3ed65264 | 605 | |
0f285c8a CH |
606 | iattr.ia_valid = ATTR_SIZE; |
607 | iattr.ia_size = new_size; | |
ea5a3dc8 | 608 | error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); |
3ed65264 DC |
609 | } |
610 | ||
611 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); | |
612 | out_error: | |
613 | return error; | |
614 | } | |
1da177e4 | 615 | |
f35642e2 ES |
616 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
617 | ||
618 | /* | |
619 | * Call fiemap helper to fill in user data. | |
620 | * Returns positive errors to xfs_getbmap. | |
621 | */ | |
622 | STATIC int | |
623 | xfs_fiemap_format( | |
624 | void **arg, | |
625 | struct getbmapx *bmv, | |
626 | int *full) | |
627 | { | |
628 | int error; | |
629 | struct fiemap_extent_info *fieinfo = *arg; | |
630 | u32 fiemap_flags = 0; | |
631 | u64 logical, physical, length; | |
632 | ||
633 | /* Do nothing for a hole */ | |
634 | if (bmv->bmv_block == -1LL) | |
635 | return 0; | |
636 | ||
637 | logical = BBTOB(bmv->bmv_offset); | |
638 | physical = BBTOB(bmv->bmv_block); | |
639 | length = BBTOB(bmv->bmv_length); | |
640 | ||
641 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
642 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
643 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
644 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
645 | physical = 0; /* no block yet */ | |
646 | } | |
647 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
648 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
649 | ||
650 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
651 | length, fiemap_flags); | |
652 | if (error > 0) { | |
653 | error = 0; | |
654 | *full = 1; /* user array now full */ | |
655 | } | |
656 | ||
657 | return -error; | |
658 | } | |
659 | ||
660 | STATIC int | |
661 | xfs_vn_fiemap( | |
662 | struct inode *inode, | |
663 | struct fiemap_extent_info *fieinfo, | |
664 | u64 start, | |
665 | u64 length) | |
666 | { | |
667 | xfs_inode_t *ip = XFS_I(inode); | |
668 | struct getbmapx bm; | |
669 | int error; | |
670 | ||
671 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
672 | if (error) | |
673 | return error; | |
674 | ||
675 | /* Set up bmap header for xfs internal routine */ | |
676 | bm.bmv_offset = BTOBB(start); | |
677 | /* Special case for whole file */ | |
678 | if (length == FIEMAP_MAX_OFFSET) | |
679 | bm.bmv_length = -1LL; | |
680 | else | |
681 | bm.bmv_length = BTOBB(length); | |
682 | ||
97db39a1 ES |
683 | /* We add one because in getbmap world count includes the header */ |
684 | bm.bmv_count = fieinfo->fi_extents_max + 1; | |
f35642e2 ES |
685 | bm.bmv_iflags = BMV_IF_PREALLOC; |
686 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) | |
687 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
688 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
689 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
690 | ||
691 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
692 | if (error) | |
693 | return -error; | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
41be8bed | 698 | static const struct inode_operations xfs_inode_operations = { |
416c6d5b NS |
699 | .permission = xfs_vn_permission, |
700 | .truncate = xfs_vn_truncate, | |
701 | .getattr = xfs_vn_getattr, | |
702 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
703 | .setxattr = generic_setxattr, |
704 | .getxattr = generic_getxattr, | |
705 | .removexattr = generic_removexattr, | |
416c6d5b | 706 | .listxattr = xfs_vn_listxattr, |
3ed65264 | 707 | .fallocate = xfs_vn_fallocate, |
f35642e2 | 708 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
709 | }; |
710 | ||
41be8bed | 711 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
712 | .create = xfs_vn_create, |
713 | .lookup = xfs_vn_lookup, | |
714 | .link = xfs_vn_link, | |
715 | .unlink = xfs_vn_unlink, | |
716 | .symlink = xfs_vn_symlink, | |
717 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
718 | /* |
719 | * Yes, XFS uses the same method for rmdir and unlink. | |
720 | * | |
721 | * There are some subtile differences deeper in the code, | |
722 | * but we use S_ISDIR to check for those. | |
723 | */ | |
724 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
725 | .mknod = xfs_vn_mknod, |
726 | .rename = xfs_vn_rename, | |
727 | .permission = xfs_vn_permission, | |
728 | .getattr = xfs_vn_getattr, | |
729 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
730 | .setxattr = generic_setxattr, |
731 | .getxattr = generic_getxattr, | |
732 | .removexattr = generic_removexattr, | |
416c6d5b | 733 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
734 | }; |
735 | ||
41be8bed | 736 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
737 | .create = xfs_vn_create, |
738 | .lookup = xfs_vn_ci_lookup, | |
739 | .link = xfs_vn_link, | |
740 | .unlink = xfs_vn_unlink, | |
741 | .symlink = xfs_vn_symlink, | |
742 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
743 | /* |
744 | * Yes, XFS uses the same method for rmdir and unlink. | |
745 | * | |
746 | * There are some subtile differences deeper in the code, | |
747 | * but we use S_ISDIR to check for those. | |
748 | */ | |
749 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
750 | .mknod = xfs_vn_mknod, |
751 | .rename = xfs_vn_rename, | |
752 | .permission = xfs_vn_permission, | |
753 | .getattr = xfs_vn_getattr, | |
754 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
755 | .setxattr = generic_setxattr, |
756 | .getxattr = generic_getxattr, | |
757 | .removexattr = generic_removexattr, | |
384f3ced | 758 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
759 | }; |
760 | ||
41be8bed | 761 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 762 | .readlink = generic_readlink, |
416c6d5b NS |
763 | .follow_link = xfs_vn_follow_link, |
764 | .put_link = xfs_vn_put_link, | |
765 | .permission = xfs_vn_permission, | |
766 | .getattr = xfs_vn_getattr, | |
767 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
768 | .setxattr = generic_setxattr, |
769 | .getxattr = generic_getxattr, | |
770 | .removexattr = generic_removexattr, | |
416c6d5b | 771 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 772 | }; |
41be8bed CH |
773 | |
774 | STATIC void | |
775 | xfs_diflags_to_iflags( | |
776 | struct inode *inode, | |
777 | struct xfs_inode *ip) | |
778 | { | |
779 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
780 | inode->i_flags |= S_IMMUTABLE; | |
781 | else | |
782 | inode->i_flags &= ~S_IMMUTABLE; | |
783 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
784 | inode->i_flags |= S_APPEND; | |
785 | else | |
786 | inode->i_flags &= ~S_APPEND; | |
787 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
788 | inode->i_flags |= S_SYNC; | |
789 | else | |
790 | inode->i_flags &= ~S_SYNC; | |
791 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
792 | inode->i_flags |= S_NOATIME; | |
793 | else | |
794 | inode->i_flags &= ~S_NOATIME; | |
795 | } | |
796 | ||
797 | /* | |
798 | * Initialize the Linux inode, set up the operation vectors and | |
799 | * unlock the inode. | |
800 | * | |
801 | * When reading existing inodes from disk this is called directly | |
802 | * from xfs_iget, when creating a new inode it is called from | |
803 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
804 | * |
805 | * We are always called with an uninitialised linux inode here. | |
806 | * We need to initialise the necessary fields and take a reference | |
807 | * on it. | |
41be8bed CH |
808 | */ |
809 | void | |
810 | xfs_setup_inode( | |
811 | struct xfs_inode *ip) | |
812 | { | |
bf904248 DC |
813 | struct inode *inode = &ip->i_vnode; |
814 | ||
815 | inode->i_ino = ip->i_ino; | |
816 | inode->i_state = I_NEW|I_LOCK; | |
817 | inode_add_to_lists(ip->i_mount->m_super, inode); | |
41be8bed CH |
818 | |
819 | inode->i_mode = ip->i_d.di_mode; | |
820 | inode->i_nlink = ip->i_d.di_nlink; | |
821 | inode->i_uid = ip->i_d.di_uid; | |
822 | inode->i_gid = ip->i_d.di_gid; | |
823 | ||
824 | switch (inode->i_mode & S_IFMT) { | |
825 | case S_IFBLK: | |
826 | case S_IFCHR: | |
827 | inode->i_rdev = | |
828 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
829 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
830 | break; | |
831 | default: | |
832 | inode->i_rdev = 0; | |
833 | break; | |
834 | } | |
835 | ||
836 | inode->i_generation = ip->i_d.di_gen; | |
837 | i_size_write(inode, ip->i_d.di_size); | |
838 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
839 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
840 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
841 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
842 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
843 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
844 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
845 | |
846 | switch (inode->i_mode & S_IFMT) { | |
847 | case S_IFREG: | |
848 | inode->i_op = &xfs_inode_operations; | |
849 | inode->i_fop = &xfs_file_operations; | |
850 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
851 | break; | |
852 | case S_IFDIR: | |
853 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
854 | inode->i_op = &xfs_dir_ci_inode_operations; | |
855 | else | |
856 | inode->i_op = &xfs_dir_inode_operations; | |
857 | inode->i_fop = &xfs_dir_file_operations; | |
858 | break; | |
859 | case S_IFLNK: | |
860 | inode->i_op = &xfs_symlink_inode_operations; | |
861 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
862 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
863 | break; | |
864 | default: | |
865 | inode->i_op = &xfs_inode_operations; | |
866 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
867 | break; | |
868 | } | |
869 | ||
870 | xfs_iflags_clear(ip, XFS_INEW); | |
871 | barrier(); | |
872 | ||
873 | unlock_new_inode(inode); | |
874 | } |