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 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
a844f451 | 33 | #include "xfs_attr_sf.h" |
1da177e4 LT |
34 | #include "xfs_dir2_sf.h" |
35 | #include "xfs_dinode.h" | |
36 | #include "xfs_inode.h" | |
a844f451 NS |
37 | #include "xfs_btree.h" |
38 | #include "xfs_ialloc.h" | |
1da177e4 | 39 | #include "xfs_rtalloc.h" |
1da177e4 | 40 | #include "xfs_itable.h" |
a844f451 | 41 | #include "xfs_error.h" |
1da177e4 LT |
42 | #include "xfs_rw.h" |
43 | #include "xfs_acl.h" | |
1da177e4 | 44 | #include "xfs_attr.h" |
a844f451 | 45 | #include "xfs_bmap.h" |
1da177e4 LT |
46 | #include "xfs_buf_item.h" |
47 | #include "xfs_utils.h" | |
48 | #include "xfs_dfrag.h" | |
49 | #include "xfs_fsops.h" | |
993386c1 | 50 | #include "xfs_vnodeops.h" |
25fe55e8 CH |
51 | #include "xfs_quota.h" |
52 | #include "xfs_inode_item.h" | |
d296d30a | 53 | #include "xfs_export.h" |
1da177e4 | 54 | |
16f7e0fe | 55 | #include <linux/capability.h> |
1da177e4 LT |
56 | #include <linux/dcache.h> |
57 | #include <linux/mount.h> | |
58 | #include <linux/namei.h> | |
59 | #include <linux/pagemap.h> | |
d296d30a | 60 | #include <linux/exportfs.h> |
1da177e4 LT |
61 | |
62 | /* | |
63 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
64 | * a file or fs handle. | |
65 | * | |
66 | * XFS_IOC_PATH_TO_FSHANDLE | |
67 | * returns fs handle for a mount point or path within that mount point | |
68 | * XFS_IOC_FD_TO_HANDLE | |
69 | * returns full handle for a FD opened in user space | |
70 | * XFS_IOC_PATH_TO_HANDLE | |
71 | * returns full handle for a path | |
72 | */ | |
d5547f9f | 73 | int |
1da177e4 LT |
74 | xfs_find_handle( |
75 | unsigned int cmd, | |
743bb465 | 76 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
77 | { |
78 | int hsize; | |
79 | xfs_handle_t handle; | |
1da177e4 | 80 | struct inode *inode; |
4346cdd4 CH |
81 | struct file *file = NULL; |
82 | struct path path; | |
83 | int error; | |
84 | struct xfs_inode *ip; | |
1da177e4 | 85 | |
4346cdd4 | 86 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 87 | file = fget(hreq->fd); |
1da177e4 | 88 | if (!file) |
4346cdd4 CH |
89 | return -EBADF; |
90 | inode = file->f_path.dentry->d_inode; | |
91 | } else { | |
92 | error = user_lpath((const char __user *)hreq->path, &path); | |
93 | if (error) | |
94 | return error; | |
95 | inode = path.dentry->d_inode; | |
1da177e4 | 96 | } |
4346cdd4 CH |
97 | ip = XFS_I(inode); |
98 | ||
99 | /* | |
100 | * We can only generate handles for inodes residing on a XFS filesystem, | |
101 | * and only for regular files, directories or symbolic links. | |
102 | */ | |
103 | error = -EINVAL; | |
104 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
105 | goto out_put; | |
106 | ||
107 | error = -EBADF; | |
108 | if (!S_ISREG(inode->i_mode) && | |
109 | !S_ISDIR(inode->i_mode) && | |
110 | !S_ISLNK(inode->i_mode)) | |
111 | goto out_put; | |
112 | ||
113 | ||
114 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
115 | ||
116 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
117 | /* | |
118 | * This handle only contains an fsid, zero the rest. | |
119 | */ | |
120 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
121 | hsize = sizeof(xfs_fsid_t); | |
122 | } else { | |
1da177e4 LT |
123 | int lock_mode; |
124 | ||
1da177e4 | 125 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
126 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
127 | sizeof(handle.ha_fid.fid_len); | |
128 | handle.ha_fid.fid_pad = 0; | |
129 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
130 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
131 | xfs_iunlock_map_shared(ip, lock_mode); |
132 | ||
133 | hsize = XFS_HSIZE(handle); | |
134 | } | |
135 | ||
4346cdd4 | 136 | error = -EFAULT; |
743bb465 | 137 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
138 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
139 | goto out_put; | |
1da177e4 | 140 | |
4346cdd4 CH |
141 | error = 0; |
142 | ||
143 | out_put: | |
144 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
145 | fput(file); | |
146 | else | |
147 | path_put(&path); | |
148 | return error; | |
1da177e4 LT |
149 | } |
150 | ||
1da177e4 | 151 | /* |
d296d30a CH |
152 | * No need to do permission checks on the various pathname components |
153 | * as the handle operations are privileged. | |
1da177e4 LT |
154 | */ |
155 | STATIC int | |
d296d30a CH |
156 | xfs_handle_acceptable( |
157 | void *context, | |
158 | struct dentry *dentry) | |
159 | { | |
160 | return 1; | |
161 | } | |
162 | ||
163 | /* | |
164 | * Convert userspace handle data into a dentry. | |
165 | */ | |
166 | struct dentry * | |
167 | xfs_handle_to_dentry( | |
168 | struct file *parfilp, | |
169 | void __user *uhandle, | |
170 | u32 hlen) | |
1da177e4 | 171 | { |
1da177e4 | 172 | xfs_handle_t handle; |
d296d30a | 173 | struct xfs_fid64 fid; |
1da177e4 LT |
174 | |
175 | /* | |
176 | * Only allow handle opens under a directory. | |
177 | */ | |
d296d30a CH |
178 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
179 | return ERR_PTR(-ENOTDIR); | |
180 | ||
181 | if (hlen != sizeof(xfs_handle_t)) | |
182 | return ERR_PTR(-EINVAL); | |
183 | if (copy_from_user(&handle, uhandle, hlen)) | |
184 | return ERR_PTR(-EFAULT); | |
185 | if (handle.ha_fid.fid_len != | |
186 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
187 | return ERR_PTR(-EINVAL); | |
188 | ||
189 | memset(&fid, 0, sizeof(struct fid)); | |
190 | fid.ino = handle.ha_fid.fid_ino; | |
191 | fid.gen = handle.ha_fid.fid_gen; | |
192 | ||
193 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
194 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
195 | xfs_handle_acceptable, NULL); | |
196 | } | |
1da177e4 | 197 | |
d296d30a CH |
198 | STATIC struct dentry * |
199 | xfs_handlereq_to_dentry( | |
200 | struct file *parfilp, | |
201 | xfs_fsop_handlereq_t *hreq) | |
202 | { | |
203 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
204 | } |
205 | ||
d5547f9f | 206 | int |
1da177e4 | 207 | xfs_open_by_handle( |
1da177e4 | 208 | struct file *parfilp, |
d296d30a | 209 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 210 | { |
745ca247 | 211 | const struct cred *cred = current_cred(); |
1da177e4 | 212 | int error; |
d296d30a | 213 | int fd; |
1da177e4 LT |
214 | int permflag; |
215 | struct file *filp; | |
216 | struct inode *inode; | |
217 | struct dentry *dentry; | |
1da177e4 LT |
218 | |
219 | if (!capable(CAP_SYS_ADMIN)) | |
220 | return -XFS_ERROR(EPERM); | |
1da177e4 | 221 | |
d296d30a CH |
222 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
223 | if (IS_ERR(dentry)) | |
224 | return PTR_ERR(dentry); | |
225 | inode = dentry->d_inode; | |
1da177e4 LT |
226 | |
227 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
228 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
229 | error = -XFS_ERROR(EPERM); |
230 | goto out_dput; | |
1da177e4 LT |
231 | } |
232 | ||
233 | #if BITS_PER_LONG != 32 | |
743bb465 | 234 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 235 | #endif |
d296d30a | 236 | |
1da177e4 | 237 | /* Put open permission in namei format. */ |
743bb465 | 238 | permflag = hreq->oflags; |
1da177e4 LT |
239 | if ((permflag+1) & O_ACCMODE) |
240 | permflag++; | |
241 | if (permflag & O_TRUNC) | |
242 | permflag |= 2; | |
243 | ||
244 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
245 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
246 | error = -XFS_ERROR(EPERM); |
247 | goto out_dput; | |
1da177e4 LT |
248 | } |
249 | ||
250 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
251 | error = -XFS_ERROR(EACCES); |
252 | goto out_dput; | |
1da177e4 LT |
253 | } |
254 | ||
255 | /* Can't write directories. */ | |
d296d30a CH |
256 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
257 | error = -XFS_ERROR(EISDIR); | |
258 | goto out_dput; | |
1da177e4 LT |
259 | } |
260 | ||
d296d30a CH |
261 | fd = get_unused_fd(); |
262 | if (fd < 0) { | |
263 | error = fd; | |
264 | goto out_dput; | |
1da177e4 LT |
265 | } |
266 | ||
d296d30a CH |
267 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
268 | hreq->oflags, cred); | |
1da177e4 | 269 | if (IS_ERR(filp)) { |
d296d30a CH |
270 | put_unused_fd(fd); |
271 | return PTR_ERR(filp); | |
1da177e4 | 272 | } |
4d4be482 | 273 | |
2e2e7bb1 | 274 | if (inode->i_mode & S_IFREG) { |
2e2e7bb1 | 275 | filp->f_flags |= O_NOATIME; |
4d4be482 | 276 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 277 | } |
1da177e4 | 278 | |
d296d30a CH |
279 | fd_install(fd, filp); |
280 | return fd; | |
281 | ||
282 | out_dput: | |
283 | dput(dentry); | |
284 | return error; | |
1da177e4 LT |
285 | } |
286 | ||
804c83c3 CH |
287 | /* |
288 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
289 | * unused first argument. | |
290 | */ | |
291 | STATIC int | |
292 | do_readlink( | |
293 | char __user *buffer, | |
294 | int buflen, | |
295 | const char *link) | |
296 | { | |
297 | int len; | |
298 | ||
299 | len = PTR_ERR(link); | |
300 | if (IS_ERR(link)) | |
301 | goto out; | |
302 | ||
303 | len = strlen(link); | |
304 | if (len > (unsigned) buflen) | |
305 | len = buflen; | |
306 | if (copy_to_user(buffer, link, len)) | |
307 | len = -EFAULT; | |
308 | out: | |
309 | return len; | |
310 | } | |
311 | ||
312 | ||
d5547f9f | 313 | int |
1da177e4 | 314 | xfs_readlink_by_handle( |
d296d30a CH |
315 | struct file *parfilp, |
316 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 317 | { |
d296d30a | 318 | struct dentry *dentry; |
1da177e4 | 319 | __u32 olen; |
804c83c3 CH |
320 | void *link; |
321 | int error; | |
1da177e4 LT |
322 | |
323 | if (!capable(CAP_SYS_ADMIN)) | |
324 | return -XFS_ERROR(EPERM); | |
1da177e4 | 325 | |
d296d30a CH |
326 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
327 | if (IS_ERR(dentry)) | |
328 | return PTR_ERR(dentry); | |
1da177e4 LT |
329 | |
330 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 331 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 332 | error = -XFS_ERROR(EINVAL); |
d296d30a | 333 | goto out_dput; |
1da177e4 LT |
334 | } |
335 | ||
743bb465 | 336 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 337 | error = -XFS_ERROR(EFAULT); |
d296d30a | 338 | goto out_dput; |
1da177e4 | 339 | } |
1da177e4 | 340 | |
804c83c3 | 341 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
342 | if (!link) { |
343 | error = -XFS_ERROR(ENOMEM); | |
344 | goto out_dput; | |
345 | } | |
1da177e4 | 346 | |
d296d30a | 347 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 348 | if (error) |
804c83c3 | 349 | goto out_kfree; |
743bb465 | 350 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
351 | if (error) |
352 | goto out_kfree; | |
67fcaa73 | 353 | |
804c83c3 CH |
354 | out_kfree: |
355 | kfree(link); | |
d296d30a CH |
356 | out_dput: |
357 | dput(dentry); | |
804c83c3 | 358 | return error; |
1da177e4 LT |
359 | } |
360 | ||
361 | STATIC int | |
362 | xfs_fssetdm_by_handle( | |
d296d30a CH |
363 | struct file *parfilp, |
364 | void __user *arg) | |
1da177e4 LT |
365 | { |
366 | int error; | |
367 | struct fsdmidata fsd; | |
368 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 369 | struct dentry *dentry; |
1da177e4 LT |
370 | |
371 | if (!capable(CAP_MKNOD)) | |
372 | return -XFS_ERROR(EPERM); | |
373 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
374 | return -XFS_ERROR(EFAULT); | |
375 | ||
d296d30a CH |
376 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
377 | if (IS_ERR(dentry)) | |
378 | return PTR_ERR(dentry); | |
1da177e4 | 379 | |
d296d30a | 380 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
381 | error = -XFS_ERROR(EPERM); |
382 | goto out; | |
1da177e4 LT |
383 | } |
384 | ||
385 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
386 | error = -XFS_ERROR(EFAULT); |
387 | goto out; | |
1da177e4 LT |
388 | } |
389 | ||
d296d30a | 390 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 391 | fsd.fsd_dmstate); |
1da177e4 | 392 | |
6e7f75ea | 393 | out: |
d296d30a | 394 | dput(dentry); |
6e7f75ea | 395 | return error; |
1da177e4 LT |
396 | } |
397 | ||
398 | STATIC int | |
399 | xfs_attrlist_by_handle( | |
d296d30a CH |
400 | struct file *parfilp, |
401 | void __user *arg) | |
1da177e4 | 402 | { |
d296d30a | 403 | int error = -ENOMEM; |
1da177e4 LT |
404 | attrlist_cursor_kern_t *cursor; |
405 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 406 | struct dentry *dentry; |
1da177e4 LT |
407 | char *kbuf; |
408 | ||
409 | if (!capable(CAP_SYS_ADMIN)) | |
410 | return -XFS_ERROR(EPERM); | |
411 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
412 | return -XFS_ERROR(EFAULT); | |
413 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
414 | return -XFS_ERROR(EINVAL); | |
415 | ||
90ad58a8 CH |
416 | /* |
417 | * Reject flags, only allow namespaces. | |
418 | */ | |
419 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
420 | return -XFS_ERROR(EINVAL); | |
421 | ||
d296d30a CH |
422 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
423 | if (IS_ERR(dentry)) | |
424 | return PTR_ERR(dentry); | |
1da177e4 LT |
425 | |
426 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
427 | if (!kbuf) | |
d296d30a | 428 | goto out_dput; |
1da177e4 LT |
429 | |
430 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 431 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 432 | al_hreq.flags, cursor); |
1da177e4 LT |
433 | if (error) |
434 | goto out_kfree; | |
435 | ||
436 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
437 | error = -EFAULT; | |
438 | ||
439 | out_kfree: | |
440 | kfree(kbuf); | |
d296d30a CH |
441 | out_dput: |
442 | dput(dentry); | |
443 | return error; | |
1da177e4 LT |
444 | } |
445 | ||
28750975 | 446 | int |
1da177e4 | 447 | xfs_attrmulti_attr_get( |
739bfb2a | 448 | struct inode *inode, |
1da177e4 LT |
449 | char *name, |
450 | char __user *ubuf, | |
451 | __uint32_t *len, | |
452 | __uint32_t flags) | |
453 | { | |
454 | char *kbuf; | |
455 | int error = EFAULT; | |
e8b0ebaa | 456 | |
1da177e4 LT |
457 | if (*len > XATTR_SIZE_MAX) |
458 | return EINVAL; | |
459 | kbuf = kmalloc(*len, GFP_KERNEL); | |
460 | if (!kbuf) | |
461 | return ENOMEM; | |
462 | ||
e8b0ebaa | 463 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
464 | if (error) |
465 | goto out_kfree; | |
466 | ||
467 | if (copy_to_user(ubuf, kbuf, *len)) | |
468 | error = EFAULT; | |
469 | ||
470 | out_kfree: | |
471 | kfree(kbuf); | |
472 | return error; | |
473 | } | |
474 | ||
28750975 | 475 | int |
1da177e4 | 476 | xfs_attrmulti_attr_set( |
739bfb2a | 477 | struct inode *inode, |
1da177e4 LT |
478 | char *name, |
479 | const char __user *ubuf, | |
480 | __uint32_t len, | |
481 | __uint32_t flags) | |
482 | { | |
483 | char *kbuf; | |
484 | int error = EFAULT; | |
485 | ||
739bfb2a | 486 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
487 | return EPERM; |
488 | if (len > XATTR_SIZE_MAX) | |
489 | return EINVAL; | |
490 | ||
491 | kbuf = kmalloc(len, GFP_KERNEL); | |
492 | if (!kbuf) | |
493 | return ENOMEM; | |
494 | ||
495 | if (copy_from_user(kbuf, ubuf, len)) | |
496 | goto out_kfree; | |
e8b0ebaa | 497 | |
739bfb2a | 498 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
499 | |
500 | out_kfree: | |
501 | kfree(kbuf); | |
502 | return error; | |
503 | } | |
504 | ||
28750975 | 505 | int |
1da177e4 | 506 | xfs_attrmulti_attr_remove( |
739bfb2a | 507 | struct inode *inode, |
1da177e4 LT |
508 | char *name, |
509 | __uint32_t flags) | |
510 | { | |
739bfb2a | 511 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 512 | return EPERM; |
739bfb2a | 513 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
514 | } |
515 | ||
516 | STATIC int | |
517 | xfs_attrmulti_by_handle( | |
42a74f20 | 518 | struct file *parfilp, |
d296d30a | 519 | void __user *arg) |
1da177e4 LT |
520 | { |
521 | int error; | |
522 | xfs_attr_multiop_t *ops; | |
523 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 524 | struct dentry *dentry; |
1da177e4 LT |
525 | unsigned int i, size; |
526 | char *attr_name; | |
527 | ||
528 | if (!capable(CAP_SYS_ADMIN)) | |
529 | return -XFS_ERROR(EPERM); | |
530 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
531 | return -XFS_ERROR(EFAULT); | |
532 | ||
d296d30a CH |
533 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
534 | if (IS_ERR(dentry)) | |
535 | return PTR_ERR(dentry); | |
1da177e4 LT |
536 | |
537 | error = E2BIG; | |
e182f57a | 538 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 539 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 540 | goto out_dput; |
1da177e4 LT |
541 | |
542 | error = ENOMEM; | |
543 | ops = kmalloc(size, GFP_KERNEL); | |
544 | if (!ops) | |
d296d30a | 545 | goto out_dput; |
1da177e4 LT |
546 | |
547 | error = EFAULT; | |
548 | if (copy_from_user(ops, am_hreq.ops, size)) | |
549 | goto out_kfree_ops; | |
550 | ||
551 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
552 | if (!attr_name) | |
553 | goto out_kfree_ops; | |
554 | ||
555 | ||
556 | error = 0; | |
557 | for (i = 0; i < am_hreq.opcount; i++) { | |
558 | ops[i].am_error = strncpy_from_user(attr_name, | |
559 | ops[i].am_attrname, MAXNAMELEN); | |
560 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
561 | error = -ERANGE; | |
562 | if (ops[i].am_error < 0) | |
563 | break; | |
564 | ||
565 | switch (ops[i].am_opcode) { | |
566 | case ATTR_OP_GET: | |
d296d30a CH |
567 | ops[i].am_error = xfs_attrmulti_attr_get( |
568 | dentry->d_inode, attr_name, | |
569 | ops[i].am_attrvalue, &ops[i].am_length, | |
570 | ops[i].am_flags); | |
1da177e4 LT |
571 | break; |
572 | case ATTR_OP_SET: | |
42a74f20 DH |
573 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
574 | if (ops[i].am_error) | |
575 | break; | |
d296d30a CH |
576 | ops[i].am_error = xfs_attrmulti_attr_set( |
577 | dentry->d_inode, attr_name, | |
578 | ops[i].am_attrvalue, ops[i].am_length, | |
579 | ops[i].am_flags); | |
42a74f20 | 580 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
581 | break; |
582 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
583 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
584 | if (ops[i].am_error) | |
585 | break; | |
d296d30a CH |
586 | ops[i].am_error = xfs_attrmulti_attr_remove( |
587 | dentry->d_inode, attr_name, | |
588 | ops[i].am_flags); | |
42a74f20 | 589 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
590 | break; |
591 | default: | |
592 | ops[i].am_error = EINVAL; | |
593 | } | |
594 | } | |
595 | ||
596 | if (copy_to_user(am_hreq.ops, ops, size)) | |
597 | error = XFS_ERROR(EFAULT); | |
598 | ||
599 | kfree(attr_name); | |
600 | out_kfree_ops: | |
601 | kfree(ops); | |
d296d30a CH |
602 | out_dput: |
603 | dput(dentry); | |
1da177e4 LT |
604 | return -error; |
605 | } | |
606 | ||
d5547f9f | 607 | int |
1da177e4 | 608 | xfs_ioc_space( |
993386c1 | 609 | struct xfs_inode *ip, |
f37ea149 | 610 | struct inode *inode, |
1da177e4 LT |
611 | struct file *filp, |
612 | int ioflags, | |
613 | unsigned int cmd, | |
743bb465 | 614 | xfs_flock64_t *bf) |
1da177e4 | 615 | { |
1da177e4 LT |
616 | int attr_flags = 0; |
617 | int error; | |
618 | ||
743bb465 | 619 | /* |
620 | * Only allow the sys admin to reserve space unless | |
621 | * unwritten extents are enabled. | |
622 | */ | |
623 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
624 | !capable(CAP_SYS_ADMIN)) | |
625 | return -XFS_ERROR(EPERM); | |
626 | ||
f37ea149 | 627 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
628 | return -XFS_ERROR(EPERM); |
629 | ||
ad4a8ac4 | 630 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
631 | return -XFS_ERROR(EBADF); |
632 | ||
f37ea149 | 633 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
634 | return -XFS_ERROR(EINVAL); |
635 | ||
1da177e4 | 636 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 637 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 638 | if (ioflags & IO_INVIS) |
0f285c8a | 639 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 640 | |
743bb465 | 641 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
642 | return -error; |
643 | } | |
644 | ||
645 | STATIC int | |
646 | xfs_ioc_bulkstat( | |
647 | xfs_mount_t *mp, | |
648 | unsigned int cmd, | |
649 | void __user *arg) | |
650 | { | |
651 | xfs_fsop_bulkreq_t bulkreq; | |
652 | int count; /* # of records returned */ | |
653 | xfs_ino_t inlast; /* last inode number */ | |
654 | int done; | |
655 | int error; | |
656 | ||
657 | /* done = 1 if there are more stats to get and if bulkstat */ | |
658 | /* should be called again (unused here, but used in dmapi) */ | |
659 | ||
660 | if (!capable(CAP_SYS_ADMIN)) | |
661 | return -EPERM; | |
662 | ||
663 | if (XFS_FORCED_SHUTDOWN(mp)) | |
664 | return -XFS_ERROR(EIO); | |
665 | ||
666 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
667 | return -XFS_ERROR(EFAULT); | |
668 | ||
669 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
670 | return -XFS_ERROR(EFAULT); | |
671 | ||
672 | if ((count = bulkreq.icount) <= 0) | |
673 | return -XFS_ERROR(EINVAL); | |
674 | ||
cd57e594 LM |
675 | if (bulkreq.ubuffer == NULL) |
676 | return -XFS_ERROR(EINVAL); | |
677 | ||
1da177e4 LT |
678 | if (cmd == XFS_IOC_FSINUMBERS) |
679 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 680 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
681 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
682 | error = xfs_bulkstat_single(mp, &inlast, | |
683 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
684 | else /* XFS_IOC_FSBULKSTAT */ |
685 | error = xfs_bulkstat(mp, &inlast, &count, | |
686 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
687 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
688 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
689 | |
690 | if (error) | |
691 | return -error; | |
692 | ||
693 | if (bulkreq.ocount != NULL) { | |
694 | if (copy_to_user(bulkreq.lastip, &inlast, | |
695 | sizeof(xfs_ino_t))) | |
696 | return -XFS_ERROR(EFAULT); | |
697 | ||
698 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
699 | return -XFS_ERROR(EFAULT); | |
700 | } | |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | STATIC int | |
706 | xfs_ioc_fsgeometry_v1( | |
707 | xfs_mount_t *mp, | |
708 | void __user *arg) | |
709 | { | |
710 | xfs_fsop_geom_v1_t fsgeo; | |
711 | int error; | |
712 | ||
713 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
714 | if (error) | |
715 | return -error; | |
716 | ||
717 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
718 | return -XFS_ERROR(EFAULT); | |
719 | return 0; | |
720 | } | |
721 | ||
722 | STATIC int | |
723 | xfs_ioc_fsgeometry( | |
724 | xfs_mount_t *mp, | |
725 | void __user *arg) | |
726 | { | |
727 | xfs_fsop_geom_t fsgeo; | |
728 | int error; | |
729 | ||
730 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
731 | if (error) | |
732 | return -error; | |
733 | ||
734 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
735 | return -XFS_ERROR(EFAULT); | |
736 | return 0; | |
737 | } | |
738 | ||
739 | /* | |
740 | * Linux extended inode flags interface. | |
741 | */ | |
1da177e4 LT |
742 | |
743 | STATIC unsigned int | |
744 | xfs_merge_ioc_xflags( | |
745 | unsigned int flags, | |
746 | unsigned int start) | |
747 | { | |
748 | unsigned int xflags = start; | |
749 | ||
39058a0e | 750 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
751 | xflags |= XFS_XFLAG_IMMUTABLE; |
752 | else | |
753 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 754 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
755 | xflags |= XFS_XFLAG_APPEND; |
756 | else | |
757 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 758 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
759 | xflags |= XFS_XFLAG_SYNC; |
760 | else | |
761 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 762 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
763 | xflags |= XFS_XFLAG_NOATIME; |
764 | else | |
765 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 766 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
767 | xflags |= XFS_XFLAG_NODUMP; |
768 | else | |
769 | xflags &= ~XFS_XFLAG_NODUMP; | |
770 | ||
771 | return xflags; | |
772 | } | |
773 | ||
774 | STATIC unsigned int | |
775 | xfs_di2lxflags( | |
776 | __uint16_t di_flags) | |
777 | { | |
778 | unsigned int flags = 0; | |
779 | ||
780 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 781 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 782 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 783 | flags |= FS_APPEND_FL; |
1da177e4 | 784 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 785 | flags |= FS_SYNC_FL; |
1da177e4 | 786 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 787 | flags |= FS_NOATIME_FL; |
1da177e4 | 788 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 789 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
790 | return flags; |
791 | } | |
792 | ||
c83bfab1 CH |
793 | STATIC int |
794 | xfs_ioc_fsgetxattr( | |
795 | xfs_inode_t *ip, | |
796 | int attr, | |
797 | void __user *arg) | |
798 | { | |
799 | struct fsxattr fa; | |
800 | ||
801 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
802 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
803 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
804 | fa.fsx_projid = ip->i_d.di_projid; | |
805 | ||
806 | if (attr) { | |
807 | if (ip->i_afp) { | |
808 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
809 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
810 | sizeof(xfs_bmbt_rec_t); | |
811 | else | |
812 | fa.fsx_nextents = ip->i_d.di_anextents; | |
813 | } else | |
814 | fa.fsx_nextents = 0; | |
815 | } else { | |
816 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
817 | fa.fsx_nextents = ip->i_df.if_bytes / | |
818 | sizeof(xfs_bmbt_rec_t); | |
819 | else | |
820 | fa.fsx_nextents = ip->i_d.di_nextents; | |
821 | } | |
822 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
823 | ||
824 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
825 | return -EFAULT; | |
826 | return 0; | |
827 | } | |
828 | ||
25fe55e8 CH |
829 | STATIC void |
830 | xfs_set_diflags( | |
831 | struct xfs_inode *ip, | |
832 | unsigned int xflags) | |
833 | { | |
834 | unsigned int di_flags; | |
835 | ||
836 | /* can't set PREALLOC this way, just preserve it */ | |
837 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
838 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
839 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
840 | if (xflags & XFS_XFLAG_APPEND) | |
841 | di_flags |= XFS_DIFLAG_APPEND; | |
842 | if (xflags & XFS_XFLAG_SYNC) | |
843 | di_flags |= XFS_DIFLAG_SYNC; | |
844 | if (xflags & XFS_XFLAG_NOATIME) | |
845 | di_flags |= XFS_DIFLAG_NOATIME; | |
846 | if (xflags & XFS_XFLAG_NODUMP) | |
847 | di_flags |= XFS_DIFLAG_NODUMP; | |
848 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
849 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
850 | if (xflags & XFS_XFLAG_NODEFRAG) | |
851 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
852 | if (xflags & XFS_XFLAG_FILESTREAM) | |
853 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
854 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
855 | if (xflags & XFS_XFLAG_RTINHERIT) | |
856 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
857 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
858 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
859 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
860 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
861 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
862 | if (xflags & XFS_XFLAG_REALTIME) | |
863 | di_flags |= XFS_DIFLAG_REALTIME; | |
864 | if (xflags & XFS_XFLAG_EXTSIZE) | |
865 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
866 | } | |
867 | ||
868 | ip->i_d.di_flags = di_flags; | |
869 | } | |
870 | ||
f13fae2d CH |
871 | STATIC void |
872 | xfs_diflags_to_linux( | |
873 | struct xfs_inode *ip) | |
874 | { | |
e4f75291 | 875 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
876 | unsigned int xflags = xfs_ip2xflags(ip); |
877 | ||
878 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
879 | inode->i_flags |= S_IMMUTABLE; | |
880 | else | |
881 | inode->i_flags &= ~S_IMMUTABLE; | |
882 | if (xflags & XFS_XFLAG_APPEND) | |
883 | inode->i_flags |= S_APPEND; | |
884 | else | |
885 | inode->i_flags &= ~S_APPEND; | |
886 | if (xflags & XFS_XFLAG_SYNC) | |
887 | inode->i_flags |= S_SYNC; | |
888 | else | |
889 | inode->i_flags &= ~S_SYNC; | |
890 | if (xflags & XFS_XFLAG_NOATIME) | |
891 | inode->i_flags |= S_NOATIME; | |
892 | else | |
893 | inode->i_flags &= ~S_NOATIME; | |
894 | } | |
25fe55e8 CH |
895 | |
896 | #define FSX_PROJID 1 | |
897 | #define FSX_EXTSIZE 2 | |
898 | #define FSX_XFLAGS 4 | |
899 | #define FSX_NONBLOCK 8 | |
900 | ||
901 | STATIC int | |
902 | xfs_ioctl_setattr( | |
903 | xfs_inode_t *ip, | |
904 | struct fsxattr *fa, | |
905 | int mask) | |
906 | { | |
907 | struct xfs_mount *mp = ip->i_mount; | |
908 | struct xfs_trans *tp; | |
909 | unsigned int lock_flags = 0; | |
910 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
911 | struct xfs_dquot *olddquot = NULL; | |
912 | int code; | |
913 | ||
914 | xfs_itrace_entry(ip); | |
915 | ||
916 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
917 | return XFS_ERROR(EROFS); | |
918 | if (XFS_FORCED_SHUTDOWN(mp)) | |
919 | return XFS_ERROR(EIO); | |
920 | ||
921 | /* | |
922 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
923 | * before we start any other transactions. Trying to do this later | |
924 | * is messy. We don't care to take a readlock to look at the ids | |
925 | * in inode here, because we can't hold it across the trans_reserve. | |
926 | * If the IDs do change before we take the ilock, we're covered | |
927 | * because the i_*dquot fields will get updated anyway. | |
928 | */ | |
929 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
930 | code = XFS_QM_DQVOPALLOC(mp, ip, ip->i_d.di_uid, | |
931 | ip->i_d.di_gid, fa->fsx_projid, | |
932 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
933 | if (code) | |
934 | return code; | |
935 | } | |
936 | ||
937 | /* | |
938 | * For the other attributes, we acquire the inode lock and | |
939 | * first do an error checking pass. | |
940 | */ | |
941 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
942 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
943 | if (code) | |
944 | goto error_return; | |
945 | ||
946 | lock_flags = XFS_ILOCK_EXCL; | |
947 | xfs_ilock(ip, lock_flags); | |
948 | ||
949 | /* | |
950 | * CAP_FOWNER overrides the following restrictions: | |
951 | * | |
952 | * The user ID of the calling process must be equal | |
953 | * to the file owner ID, except in cases where the | |
954 | * CAP_FSETID capability is applicable. | |
955 | */ | |
91b77712 | 956 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
957 | code = XFS_ERROR(EPERM); |
958 | goto error_return; | |
959 | } | |
960 | ||
961 | /* | |
962 | * Do a quota reservation only if projid is actually going to change. | |
963 | */ | |
964 | if (mask & FSX_PROJID) { | |
965 | if (XFS_IS_PQUOTA_ON(mp) && | |
966 | ip->i_d.di_projid != fa->fsx_projid) { | |
967 | ASSERT(tp); | |
968 | code = XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, udqp, gdqp, | |
969 | capable(CAP_FOWNER) ? | |
970 | XFS_QMOPT_FORCE_RES : 0); | |
971 | if (code) /* out of quota */ | |
972 | goto error_return; | |
973 | } | |
974 | } | |
975 | ||
976 | if (mask & FSX_EXTSIZE) { | |
977 | /* | |
978 | * Can't change extent size if any extents are allocated. | |
979 | */ | |
980 | if (ip->i_d.di_nextents && | |
981 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
982 | fa->fsx_extsize)) { | |
983 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
984 | goto error_return; | |
985 | } | |
986 | ||
987 | /* | |
988 | * Extent size must be a multiple of the appropriate block | |
989 | * size, if set at all. | |
990 | */ | |
991 | if (fa->fsx_extsize != 0) { | |
992 | xfs_extlen_t size; | |
993 | ||
994 | if (XFS_IS_REALTIME_INODE(ip) || | |
995 | ((mask & FSX_XFLAGS) && | |
996 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
997 | size = mp->m_sb.sb_rextsize << | |
998 | mp->m_sb.sb_blocklog; | |
999 | } else { | |
1000 | size = mp->m_sb.sb_blocksize; | |
1001 | } | |
1002 | ||
1003 | if (fa->fsx_extsize % size) { | |
1004 | code = XFS_ERROR(EINVAL); | |
1005 | goto error_return; | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | ||
1011 | if (mask & FSX_XFLAGS) { | |
1012 | /* | |
1013 | * Can't change realtime flag if any extents are allocated. | |
1014 | */ | |
1015 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1016 | (XFS_IS_REALTIME_INODE(ip)) != | |
1017 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1018 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1019 | goto error_return; | |
1020 | } | |
1021 | ||
1022 | /* | |
1023 | * If realtime flag is set then must have realtime data. | |
1024 | */ | |
1025 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1026 | if ((mp->m_sb.sb_rblocks == 0) || | |
1027 | (mp->m_sb.sb_rextsize == 0) || | |
1028 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1029 | code = XFS_ERROR(EINVAL); | |
1030 | goto error_return; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* | |
1035 | * Can't modify an immutable/append-only file unless | |
1036 | * we have appropriate permission. | |
1037 | */ | |
1038 | if ((ip->i_d.di_flags & | |
1039 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1040 | (fa->fsx_xflags & | |
1041 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1042 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1043 | code = XFS_ERROR(EPERM); | |
1044 | goto error_return; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | xfs_trans_ijoin(tp, ip, lock_flags); | |
1049 | xfs_trans_ihold(tp, ip); | |
1050 | ||
1051 | /* | |
1052 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1053 | */ |
1054 | if (mask & FSX_PROJID) { | |
1055 | /* | |
1056 | * CAP_FSETID overrides the following restrictions: | |
1057 | * | |
1058 | * The set-user-ID and set-group-ID bits of a file will be | |
1059 | * cleared upon successful return from chown() | |
1060 | */ | |
1061 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1062 | !capable(CAP_FSETID)) | |
1063 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1064 | ||
1065 | /* | |
1066 | * Change the ownerships and register quota modifications | |
1067 | * in the transaction. | |
1068 | */ | |
1069 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
1070 | if (XFS_IS_PQUOTA_ON(mp)) { | |
1071 | olddquot = XFS_QM_DQVOPCHOWN(mp, tp, ip, | |
1072 | &ip->i_gdquot, gdqp); | |
1073 | } | |
1074 | ip->i_d.di_projid = fa->fsx_projid; | |
1075 | ||
1076 | /* | |
1077 | * We may have to rev the inode as well as | |
1078 | * the superblock version number since projids didn't | |
1079 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1080 | */ | |
51ce16d5 | 1081 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1082 | xfs_bump_ino_vers2(tp, ip); |
1083 | } | |
1084 | ||
1085 | } | |
1086 | ||
1087 | if (mask & FSX_EXTSIZE) | |
1088 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1089 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1090 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1091 | xfs_diflags_to_linux(ip); |
1092 | } | |
25fe55e8 CH |
1093 | |
1094 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1095 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1096 | ||
1097 | XFS_STATS_INC(xs_ig_attrchg); | |
1098 | ||
1099 | /* | |
1100 | * If this is a synchronous mount, make sure that the | |
1101 | * transaction goes to disk before returning to the user. | |
1102 | * This is slightly sub-optimal in that truncates require | |
1103 | * two sync transactions instead of one for wsync filesystems. | |
1104 | * One for the truncate and one for the timestamps since we | |
1105 | * don't want to change the timestamps unless we're sure the | |
1106 | * truncate worked. Truncates are less than 1% of the laddis | |
1107 | * mix so this probably isn't worth the trouble to optimize. | |
1108 | */ | |
1109 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1110 | xfs_trans_set_sync(tp); | |
1111 | code = xfs_trans_commit(tp, 0); | |
1112 | xfs_iunlock(ip, lock_flags); | |
1113 | ||
1114 | /* | |
1115 | * Release any dquot(s) the inode had kept before chown. | |
1116 | */ | |
1117 | XFS_QM_DQRELE(mp, olddquot); | |
1118 | XFS_QM_DQRELE(mp, udqp); | |
1119 | XFS_QM_DQRELE(mp, gdqp); | |
1120 | ||
1121 | if (code) | |
1122 | return code; | |
1123 | ||
1124 | if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { | |
1125 | XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, | |
1126 | NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, | |
1127 | (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); | |
1128 | } | |
1129 | ||
25fe55e8 CH |
1130 | return 0; |
1131 | ||
1132 | error_return: | |
1133 | XFS_QM_DQRELE(mp, udqp); | |
1134 | XFS_QM_DQRELE(mp, gdqp); | |
1135 | xfs_trans_cancel(tp, 0); | |
1136 | if (lock_flags) | |
1137 | xfs_iunlock(ip, lock_flags); | |
1138 | return code; | |
1139 | } | |
1140 | ||
1da177e4 | 1141 | STATIC int |
df26cfe8 | 1142 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1143 | xfs_inode_t *ip, |
1144 | struct file *filp, | |
1da177e4 LT |
1145 | void __user *arg) |
1146 | { | |
1147 | struct fsxattr fa; | |
25fe55e8 | 1148 | unsigned int mask; |
df26cfe8 LM |
1149 | |
1150 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1151 | return -EFAULT; | |
1da177e4 | 1152 | |
25fe55e8 | 1153 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1154 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1155 | mask |= FSX_NONBLOCK; |
1da177e4 | 1156 | |
25fe55e8 | 1157 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1158 | } |
1da177e4 | 1159 | |
df26cfe8 LM |
1160 | STATIC int |
1161 | xfs_ioc_getxflags( | |
1162 | xfs_inode_t *ip, | |
1163 | void __user *arg) | |
1164 | { | |
1165 | unsigned int flags; | |
1da177e4 | 1166 | |
df26cfe8 LM |
1167 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1168 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1169 | return -EFAULT; | |
1170 | return 0; | |
1171 | } | |
1da177e4 | 1172 | |
df26cfe8 LM |
1173 | STATIC int |
1174 | xfs_ioc_setxflags( | |
1175 | xfs_inode_t *ip, | |
1176 | struct file *filp, | |
1177 | void __user *arg) | |
1178 | { | |
25fe55e8 | 1179 | struct fsxattr fa; |
df26cfe8 | 1180 | unsigned int flags; |
25fe55e8 | 1181 | unsigned int mask; |
1da177e4 | 1182 | |
df26cfe8 LM |
1183 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1184 | return -EFAULT; | |
1da177e4 | 1185 | |
df26cfe8 LM |
1186 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1187 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1188 | FS_SYNC_FL)) | |
1189 | return -EOPNOTSUPP; | |
1da177e4 | 1190 | |
25fe55e8 | 1191 | mask = FSX_XFLAGS; |
df26cfe8 | 1192 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1193 | mask |= FSX_NONBLOCK; |
1194 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1195 | |
25fe55e8 | 1196 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1197 | } |
1198 | ||
8a7141a8 ES |
1199 | STATIC int |
1200 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1201 | { | |
1202 | struct getbmap __user *base = *ap; | |
1203 | ||
1204 | /* copy only getbmap portion (not getbmapx) */ | |
1205 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1206 | return XFS_ERROR(EFAULT); | |
1207 | ||
1208 | *ap += sizeof(struct getbmap); | |
1209 | return 0; | |
1210 | } | |
1211 | ||
1da177e4 LT |
1212 | STATIC int |
1213 | xfs_ioc_getbmap( | |
993386c1 | 1214 | struct xfs_inode *ip, |
1da177e4 LT |
1215 | int ioflags, |
1216 | unsigned int cmd, | |
1217 | void __user *arg) | |
1218 | { | |
8a7141a8 | 1219 | struct getbmapx bmx; |
1da177e4 LT |
1220 | int error; |
1221 | ||
8a7141a8 | 1222 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1223 | return -XFS_ERROR(EFAULT); |
1224 | ||
8a7141a8 | 1225 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1226 | return -XFS_ERROR(EINVAL); |
1227 | ||
8a7141a8 | 1228 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1229 | if (ioflags & IO_INVIS) |
8a7141a8 | 1230 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1231 | |
8a7141a8 ES |
1232 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1233 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1234 | if (error) |
1235 | return -error; | |
1236 | ||
8a7141a8 ES |
1237 | /* copy back header - only size of getbmap */ |
1238 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1239 | return -XFS_ERROR(EFAULT); |
1240 | return 0; | |
1241 | } | |
1242 | ||
8a7141a8 ES |
1243 | STATIC int |
1244 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1245 | { | |
1246 | struct getbmapx __user *base = *ap; | |
1247 | ||
1248 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1249 | return XFS_ERROR(EFAULT); | |
1250 | ||
1251 | *ap += sizeof(struct getbmapx); | |
1252 | return 0; | |
1253 | } | |
1254 | ||
1da177e4 LT |
1255 | STATIC int |
1256 | xfs_ioc_getbmapx( | |
993386c1 | 1257 | struct xfs_inode *ip, |
1da177e4 LT |
1258 | void __user *arg) |
1259 | { | |
1260 | struct getbmapx bmx; | |
1da177e4 LT |
1261 | int error; |
1262 | ||
1263 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1264 | return -XFS_ERROR(EFAULT); | |
1265 | ||
1266 | if (bmx.bmv_count < 2) | |
1267 | return -XFS_ERROR(EINVAL); | |
1268 | ||
8a7141a8 | 1269 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1270 | return -XFS_ERROR(EINVAL); |
1271 | ||
8a7141a8 ES |
1272 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1273 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1274 | if (error) |
1275 | return -error; | |
1276 | ||
8a7141a8 ES |
1277 | /* copy back header */ |
1278 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1279 | return -XFS_ERROR(EFAULT); |
1280 | ||
1281 | return 0; | |
1282 | } | |
df26cfe8 | 1283 | |
4d4be482 CH |
1284 | /* |
1285 | * Note: some of the ioctl's return positive numbers as a | |
1286 | * byte count indicating success, such as readlink_by_handle. | |
1287 | * So we don't "sign flip" like most other routines. This means | |
1288 | * true errors need to be returned as a negative value. | |
1289 | */ | |
1290 | long | |
1291 | xfs_file_ioctl( | |
df26cfe8 | 1292 | struct file *filp, |
df26cfe8 | 1293 | unsigned int cmd, |
4d4be482 | 1294 | unsigned long p) |
df26cfe8 LM |
1295 | { |
1296 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1297 | struct xfs_inode *ip = XFS_I(inode); |
1298 | struct xfs_mount *mp = ip->i_mount; | |
1299 | void __user *arg = (void __user *)p; | |
1300 | int ioflags = 0; | |
df26cfe8 LM |
1301 | int error; |
1302 | ||
4d4be482 CH |
1303 | if (filp->f_mode & FMODE_NOCMTIME) |
1304 | ioflags |= IO_INVIS; | |
df26cfe8 | 1305 | |
4d4be482 CH |
1306 | xfs_itrace_entry(ip); |
1307 | ||
1308 | switch (cmd) { | |
df26cfe8 LM |
1309 | case XFS_IOC_ALLOCSP: |
1310 | case XFS_IOC_FREESP: | |
1311 | case XFS_IOC_RESVSP: | |
1312 | case XFS_IOC_UNRESVSP: | |
1313 | case XFS_IOC_ALLOCSP64: | |
1314 | case XFS_IOC_FREESP64: | |
1315 | case XFS_IOC_RESVSP64: | |
743bb465 | 1316 | case XFS_IOC_UNRESVSP64: { |
1317 | xfs_flock64_t bf; | |
df26cfe8 | 1318 | |
743bb465 | 1319 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1320 | return -XFS_ERROR(EFAULT); | |
1321 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1322 | } | |
df26cfe8 LM |
1323 | case XFS_IOC_DIOINFO: { |
1324 | struct dioattr da; | |
1325 | xfs_buftarg_t *target = | |
1326 | XFS_IS_REALTIME_INODE(ip) ? | |
1327 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1328 | ||
1329 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1330 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1331 | ||
1332 | if (copy_to_user(arg, &da, sizeof(da))) | |
1333 | return -XFS_ERROR(EFAULT); | |
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1338 | case XFS_IOC_FSBULKSTAT: | |
1339 | case XFS_IOC_FSINUMBERS: | |
1340 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1341 | ||
1342 | case XFS_IOC_FSGEOMETRY_V1: | |
1343 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1344 | ||
1345 | case XFS_IOC_FSGEOMETRY: | |
1346 | return xfs_ioc_fsgeometry(mp, arg); | |
1347 | ||
1348 | case XFS_IOC_GETVERSION: | |
1349 | return put_user(inode->i_generation, (int __user *)arg); | |
1350 | ||
1351 | case XFS_IOC_FSGETXATTR: | |
1352 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1353 | case XFS_IOC_FSGETXATTRA: | |
1354 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1355 | case XFS_IOC_FSSETXATTR: |
1356 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1357 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1358 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1359 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1360 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1361 | |
1362 | case XFS_IOC_FSSETDM: { | |
1363 | struct fsdmidata dmi; | |
1364 | ||
1365 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1366 | return -XFS_ERROR(EFAULT); | |
1367 | ||
1368 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1369 | dmi.fsd_dmstate); | |
1370 | return -error; | |
1371 | } | |
1372 | ||
1373 | case XFS_IOC_GETBMAP: | |
1374 | case XFS_IOC_GETBMAPA: | |
1375 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1376 | ||
1377 | case XFS_IOC_GETBMAPX: | |
1378 | return xfs_ioc_getbmapx(ip, arg); | |
1379 | ||
1380 | case XFS_IOC_FD_TO_HANDLE: | |
1381 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1382 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1383 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1384 | |
743bb465 | 1385 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1386 | return -XFS_ERROR(EFAULT); | |
1387 | return xfs_find_handle(cmd, &hreq); | |
1388 | } | |
1389 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1390 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1391 | |
743bb465 | 1392 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1393 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1394 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1395 | } |
df26cfe8 | 1396 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1397 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1398 | |
743bb465 | 1399 | case XFS_IOC_READLINK_BY_HANDLE: { |
1400 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1401 | |
743bb465 | 1402 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1403 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1404 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1405 | } |
df26cfe8 | 1406 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1407 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1408 | |
1409 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1410 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1411 | |
1412 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1413 | struct xfs_swapext sxp; |
1414 | ||
1415 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1416 | return -XFS_ERROR(EFAULT); | |
1417 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1418 | return -error; |
1419 | } | |
1420 | ||
1421 | case XFS_IOC_FSCOUNTS: { | |
1422 | xfs_fsop_counts_t out; | |
1423 | ||
1424 | error = xfs_fs_counts(mp, &out); | |
1425 | if (error) | |
1426 | return -error; | |
1427 | ||
1428 | if (copy_to_user(arg, &out, sizeof(out))) | |
1429 | return -XFS_ERROR(EFAULT); | |
1430 | return 0; | |
1431 | } | |
1432 | ||
1433 | case XFS_IOC_SET_RESBLKS: { | |
1434 | xfs_fsop_resblks_t inout; | |
1435 | __uint64_t in; | |
1436 | ||
1437 | if (!capable(CAP_SYS_ADMIN)) | |
1438 | return -EPERM; | |
1439 | ||
1440 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1441 | return -XFS_ERROR(EFAULT); | |
1442 | ||
1443 | /* input parameter is passed in resblks field of structure */ | |
1444 | in = inout.resblks; | |
1445 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1446 | if (error) | |
1447 | return -error; | |
1448 | ||
1449 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1450 | return -XFS_ERROR(EFAULT); | |
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | case XFS_IOC_GET_RESBLKS: { | |
1455 | xfs_fsop_resblks_t out; | |
1456 | ||
1457 | if (!capable(CAP_SYS_ADMIN)) | |
1458 | return -EPERM; | |
1459 | ||
1460 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1461 | if (error) | |
1462 | return -error; | |
1463 | ||
1464 | if (copy_to_user(arg, &out, sizeof(out))) | |
1465 | return -XFS_ERROR(EFAULT); | |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | ||
1470 | case XFS_IOC_FSGROWFSDATA: { | |
1471 | xfs_growfs_data_t in; | |
1472 | ||
df26cfe8 LM |
1473 | if (copy_from_user(&in, arg, sizeof(in))) |
1474 | return -XFS_ERROR(EFAULT); | |
1475 | ||
1476 | error = xfs_growfs_data(mp, &in); | |
1477 | return -error; | |
1478 | } | |
1479 | ||
1480 | case XFS_IOC_FSGROWFSLOG: { | |
1481 | xfs_growfs_log_t in; | |
1482 | ||
df26cfe8 LM |
1483 | if (copy_from_user(&in, arg, sizeof(in))) |
1484 | return -XFS_ERROR(EFAULT); | |
1485 | ||
1486 | error = xfs_growfs_log(mp, &in); | |
1487 | return -error; | |
1488 | } | |
1489 | ||
1490 | case XFS_IOC_FSGROWFSRT: { | |
1491 | xfs_growfs_rt_t in; | |
1492 | ||
df26cfe8 LM |
1493 | if (copy_from_user(&in, arg, sizeof(in))) |
1494 | return -XFS_ERROR(EFAULT); | |
1495 | ||
1496 | error = xfs_growfs_rt(mp, &in); | |
1497 | return -error; | |
1498 | } | |
1499 | ||
df26cfe8 LM |
1500 | case XFS_IOC_GOINGDOWN: { |
1501 | __uint32_t in; | |
1502 | ||
1503 | if (!capable(CAP_SYS_ADMIN)) | |
1504 | return -EPERM; | |
1505 | ||
1506 | if (get_user(in, (__uint32_t __user *)arg)) | |
1507 | return -XFS_ERROR(EFAULT); | |
1508 | ||
1509 | error = xfs_fs_goingdown(mp, in); | |
1510 | return -error; | |
1511 | } | |
1512 | ||
1513 | case XFS_IOC_ERROR_INJECTION: { | |
1514 | xfs_error_injection_t in; | |
1515 | ||
1516 | if (!capable(CAP_SYS_ADMIN)) | |
1517 | return -EPERM; | |
1518 | ||
1519 | if (copy_from_user(&in, arg, sizeof(in))) | |
1520 | return -XFS_ERROR(EFAULT); | |
1521 | ||
1522 | error = xfs_errortag_add(in.errtag, mp); | |
1523 | return -error; | |
1524 | } | |
1525 | ||
1526 | case XFS_IOC_ERROR_CLEARALL: | |
1527 | if (!capable(CAP_SYS_ADMIN)) | |
1528 | return -EPERM; | |
1529 | ||
1530 | error = xfs_errortag_clearall(mp, 1); | |
1531 | return -error; | |
1532 | ||
1533 | default: | |
1534 | return -ENOTTY; | |
1535 | } | |
1536 | } |