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" | |
7bf446f8 | 37 | #include "xfs_ioctl.h" |
a844f451 NS |
38 | #include "xfs_btree.h" |
39 | #include "xfs_ialloc.h" | |
1da177e4 | 40 | #include "xfs_rtalloc.h" |
1da177e4 | 41 | #include "xfs_itable.h" |
a844f451 | 42 | #include "xfs_error.h" |
1da177e4 | 43 | #include "xfs_rw.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" |
0b1b213f | 54 | #include "xfs_trace.h" |
1da177e4 | 55 | |
16f7e0fe | 56 | #include <linux/capability.h> |
1da177e4 LT |
57 | #include <linux/dcache.h> |
58 | #include <linux/mount.h> | |
59 | #include <linux/namei.h> | |
60 | #include <linux/pagemap.h> | |
d296d30a | 61 | #include <linux/exportfs.h> |
1da177e4 LT |
62 | |
63 | /* | |
64 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
65 | * a file or fs handle. | |
66 | * | |
67 | * XFS_IOC_PATH_TO_FSHANDLE | |
68 | * returns fs handle for a mount point or path within that mount point | |
69 | * XFS_IOC_FD_TO_HANDLE | |
70 | * returns full handle for a FD opened in user space | |
71 | * XFS_IOC_PATH_TO_HANDLE | |
72 | * returns full handle for a path | |
73 | */ | |
d5547f9f | 74 | int |
1da177e4 LT |
75 | xfs_find_handle( |
76 | unsigned int cmd, | |
743bb465 | 77 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
78 | { |
79 | int hsize; | |
80 | xfs_handle_t handle; | |
1da177e4 | 81 | struct inode *inode; |
4346cdd4 CH |
82 | struct file *file = NULL; |
83 | struct path path; | |
84 | int error; | |
85 | struct xfs_inode *ip; | |
1da177e4 | 86 | |
4346cdd4 | 87 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 88 | file = fget(hreq->fd); |
1da177e4 | 89 | if (!file) |
4346cdd4 CH |
90 | return -EBADF; |
91 | inode = file->f_path.dentry->d_inode; | |
92 | } else { | |
93 | error = user_lpath((const char __user *)hreq->path, &path); | |
94 | if (error) | |
95 | return error; | |
96 | inode = path.dentry->d_inode; | |
1da177e4 | 97 | } |
4346cdd4 CH |
98 | ip = XFS_I(inode); |
99 | ||
100 | /* | |
101 | * We can only generate handles for inodes residing on a XFS filesystem, | |
102 | * and only for regular files, directories or symbolic links. | |
103 | */ | |
104 | error = -EINVAL; | |
105 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
106 | goto out_put; | |
107 | ||
108 | error = -EBADF; | |
109 | if (!S_ISREG(inode->i_mode) && | |
110 | !S_ISDIR(inode->i_mode) && | |
111 | !S_ISLNK(inode->i_mode)) | |
112 | goto out_put; | |
113 | ||
114 | ||
115 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
116 | ||
117 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
118 | /* | |
119 | * This handle only contains an fsid, zero the rest. | |
120 | */ | |
121 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
122 | hsize = sizeof(xfs_fsid_t); | |
123 | } else { | |
1da177e4 LT |
124 | int lock_mode; |
125 | ||
1da177e4 | 126 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
127 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
128 | sizeof(handle.ha_fid.fid_len); | |
129 | handle.ha_fid.fid_pad = 0; | |
130 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
131 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
132 | xfs_iunlock_map_shared(ip, lock_mode); |
133 | ||
134 | hsize = XFS_HSIZE(handle); | |
135 | } | |
136 | ||
4346cdd4 | 137 | error = -EFAULT; |
743bb465 | 138 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
139 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
140 | goto out_put; | |
1da177e4 | 141 | |
4346cdd4 CH |
142 | error = 0; |
143 | ||
144 | out_put: | |
145 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
146 | fput(file); | |
147 | else | |
148 | path_put(&path); | |
149 | return error; | |
1da177e4 LT |
150 | } |
151 | ||
1da177e4 | 152 | /* |
d296d30a CH |
153 | * No need to do permission checks on the various pathname components |
154 | * as the handle operations are privileged. | |
1da177e4 LT |
155 | */ |
156 | STATIC int | |
d296d30a CH |
157 | xfs_handle_acceptable( |
158 | void *context, | |
159 | struct dentry *dentry) | |
160 | { | |
161 | return 1; | |
162 | } | |
163 | ||
164 | /* | |
165 | * Convert userspace handle data into a dentry. | |
166 | */ | |
167 | struct dentry * | |
168 | xfs_handle_to_dentry( | |
169 | struct file *parfilp, | |
170 | void __user *uhandle, | |
171 | u32 hlen) | |
1da177e4 | 172 | { |
1da177e4 | 173 | xfs_handle_t handle; |
d296d30a | 174 | struct xfs_fid64 fid; |
1da177e4 LT |
175 | |
176 | /* | |
177 | * Only allow handle opens under a directory. | |
178 | */ | |
d296d30a CH |
179 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
180 | return ERR_PTR(-ENOTDIR); | |
181 | ||
182 | if (hlen != sizeof(xfs_handle_t)) | |
183 | return ERR_PTR(-EINVAL); | |
184 | if (copy_from_user(&handle, uhandle, hlen)) | |
185 | return ERR_PTR(-EFAULT); | |
186 | if (handle.ha_fid.fid_len != | |
187 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
188 | return ERR_PTR(-EINVAL); | |
189 | ||
190 | memset(&fid, 0, sizeof(struct fid)); | |
191 | fid.ino = handle.ha_fid.fid_ino; | |
192 | fid.gen = handle.ha_fid.fid_gen; | |
193 | ||
194 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
195 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
196 | xfs_handle_acceptable, NULL); | |
197 | } | |
1da177e4 | 198 | |
d296d30a CH |
199 | STATIC struct dentry * |
200 | xfs_handlereq_to_dentry( | |
201 | struct file *parfilp, | |
202 | xfs_fsop_handlereq_t *hreq) | |
203 | { | |
204 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
205 | } |
206 | ||
d5547f9f | 207 | int |
1da177e4 | 208 | xfs_open_by_handle( |
1da177e4 | 209 | struct file *parfilp, |
d296d30a | 210 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 211 | { |
745ca247 | 212 | const struct cred *cred = current_cred(); |
1da177e4 | 213 | int error; |
d296d30a | 214 | int fd; |
1da177e4 LT |
215 | int permflag; |
216 | struct file *filp; | |
217 | struct inode *inode; | |
218 | struct dentry *dentry; | |
1da177e4 LT |
219 | |
220 | if (!capable(CAP_SYS_ADMIN)) | |
221 | return -XFS_ERROR(EPERM); | |
1da177e4 | 222 | |
d296d30a CH |
223 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
224 | if (IS_ERR(dentry)) | |
225 | return PTR_ERR(dentry); | |
226 | inode = dentry->d_inode; | |
1da177e4 LT |
227 | |
228 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
229 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
230 | error = -XFS_ERROR(EPERM); |
231 | goto out_dput; | |
1da177e4 LT |
232 | } |
233 | ||
234 | #if BITS_PER_LONG != 32 | |
743bb465 | 235 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 236 | #endif |
d296d30a | 237 | |
1da177e4 | 238 | /* Put open permission in namei format. */ |
743bb465 | 239 | permflag = hreq->oflags; |
1da177e4 LT |
240 | if ((permflag+1) & O_ACCMODE) |
241 | permflag++; | |
242 | if (permflag & O_TRUNC) | |
243 | permflag |= 2; | |
244 | ||
245 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
246 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
247 | error = -XFS_ERROR(EPERM); |
248 | goto out_dput; | |
1da177e4 LT |
249 | } |
250 | ||
251 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
252 | error = -XFS_ERROR(EACCES); |
253 | goto out_dput; | |
1da177e4 LT |
254 | } |
255 | ||
256 | /* Can't write directories. */ | |
d296d30a CH |
257 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
258 | error = -XFS_ERROR(EISDIR); | |
259 | goto out_dput; | |
1da177e4 LT |
260 | } |
261 | ||
d296d30a CH |
262 | fd = get_unused_fd(); |
263 | if (fd < 0) { | |
264 | error = fd; | |
265 | goto out_dput; | |
1da177e4 LT |
266 | } |
267 | ||
d296d30a CH |
268 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
269 | hreq->oflags, cred); | |
1da177e4 | 270 | if (IS_ERR(filp)) { |
d296d30a CH |
271 | put_unused_fd(fd); |
272 | return PTR_ERR(filp); | |
1da177e4 | 273 | } |
4d4be482 | 274 | |
2e2e7bb1 | 275 | if (inode->i_mode & S_IFREG) { |
2e2e7bb1 | 276 | filp->f_flags |= O_NOATIME; |
4d4be482 | 277 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 278 | } |
1da177e4 | 279 | |
d296d30a CH |
280 | fd_install(fd, filp); |
281 | return fd; | |
282 | ||
283 | out_dput: | |
284 | dput(dentry); | |
285 | return error; | |
1da177e4 LT |
286 | } |
287 | ||
804c83c3 CH |
288 | /* |
289 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
290 | * unused first argument. | |
291 | */ | |
292 | STATIC int | |
293 | do_readlink( | |
294 | char __user *buffer, | |
295 | int buflen, | |
296 | const char *link) | |
297 | { | |
298 | int len; | |
299 | ||
300 | len = PTR_ERR(link); | |
301 | if (IS_ERR(link)) | |
302 | goto out; | |
303 | ||
304 | len = strlen(link); | |
305 | if (len > (unsigned) buflen) | |
306 | len = buflen; | |
307 | if (copy_to_user(buffer, link, len)) | |
308 | len = -EFAULT; | |
309 | out: | |
310 | return len; | |
311 | } | |
312 | ||
313 | ||
d5547f9f | 314 | int |
1da177e4 | 315 | xfs_readlink_by_handle( |
d296d30a CH |
316 | struct file *parfilp, |
317 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 318 | { |
d296d30a | 319 | struct dentry *dentry; |
1da177e4 | 320 | __u32 olen; |
804c83c3 CH |
321 | void *link; |
322 | int error; | |
1da177e4 LT |
323 | |
324 | if (!capable(CAP_SYS_ADMIN)) | |
325 | return -XFS_ERROR(EPERM); | |
1da177e4 | 326 | |
d296d30a CH |
327 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
328 | if (IS_ERR(dentry)) | |
329 | return PTR_ERR(dentry); | |
1da177e4 LT |
330 | |
331 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 332 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 333 | error = -XFS_ERROR(EINVAL); |
d296d30a | 334 | goto out_dput; |
1da177e4 LT |
335 | } |
336 | ||
743bb465 | 337 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 338 | error = -XFS_ERROR(EFAULT); |
d296d30a | 339 | goto out_dput; |
1da177e4 | 340 | } |
1da177e4 | 341 | |
804c83c3 | 342 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
343 | if (!link) { |
344 | error = -XFS_ERROR(ENOMEM); | |
345 | goto out_dput; | |
346 | } | |
1da177e4 | 347 | |
d296d30a | 348 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 349 | if (error) |
804c83c3 | 350 | goto out_kfree; |
743bb465 | 351 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
352 | if (error) |
353 | goto out_kfree; | |
67fcaa73 | 354 | |
804c83c3 CH |
355 | out_kfree: |
356 | kfree(link); | |
d296d30a CH |
357 | out_dput: |
358 | dput(dentry); | |
804c83c3 | 359 | return error; |
1da177e4 LT |
360 | } |
361 | ||
362 | STATIC int | |
363 | xfs_fssetdm_by_handle( | |
d296d30a CH |
364 | struct file *parfilp, |
365 | void __user *arg) | |
1da177e4 LT |
366 | { |
367 | int error; | |
368 | struct fsdmidata fsd; | |
369 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 370 | struct dentry *dentry; |
1da177e4 LT |
371 | |
372 | if (!capable(CAP_MKNOD)) | |
373 | return -XFS_ERROR(EPERM); | |
374 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
375 | return -XFS_ERROR(EFAULT); | |
376 | ||
d296d30a CH |
377 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
378 | if (IS_ERR(dentry)) | |
379 | return PTR_ERR(dentry); | |
1da177e4 | 380 | |
d296d30a | 381 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
382 | error = -XFS_ERROR(EPERM); |
383 | goto out; | |
1da177e4 LT |
384 | } |
385 | ||
386 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
387 | error = -XFS_ERROR(EFAULT); |
388 | goto out; | |
1da177e4 LT |
389 | } |
390 | ||
d296d30a | 391 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 392 | fsd.fsd_dmstate); |
1da177e4 | 393 | |
6e7f75ea | 394 | out: |
d296d30a | 395 | dput(dentry); |
6e7f75ea | 396 | return error; |
1da177e4 LT |
397 | } |
398 | ||
399 | STATIC int | |
400 | xfs_attrlist_by_handle( | |
d296d30a CH |
401 | struct file *parfilp, |
402 | void __user *arg) | |
1da177e4 | 403 | { |
d296d30a | 404 | int error = -ENOMEM; |
1da177e4 LT |
405 | attrlist_cursor_kern_t *cursor; |
406 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 407 | struct dentry *dentry; |
1da177e4 LT |
408 | char *kbuf; |
409 | ||
410 | if (!capable(CAP_SYS_ADMIN)) | |
411 | return -XFS_ERROR(EPERM); | |
412 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
413 | return -XFS_ERROR(EFAULT); | |
414 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
415 | return -XFS_ERROR(EINVAL); | |
416 | ||
90ad58a8 CH |
417 | /* |
418 | * Reject flags, only allow namespaces. | |
419 | */ | |
420 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
421 | return -XFS_ERROR(EINVAL); | |
422 | ||
d296d30a CH |
423 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
424 | if (IS_ERR(dentry)) | |
425 | return PTR_ERR(dentry); | |
1da177e4 LT |
426 | |
427 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
428 | if (!kbuf) | |
d296d30a | 429 | goto out_dput; |
1da177e4 LT |
430 | |
431 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 432 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 433 | al_hreq.flags, cursor); |
1da177e4 LT |
434 | if (error) |
435 | goto out_kfree; | |
436 | ||
437 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
438 | error = -EFAULT; | |
439 | ||
440 | out_kfree: | |
441 | kfree(kbuf); | |
d296d30a CH |
442 | out_dput: |
443 | dput(dentry); | |
444 | return error; | |
1da177e4 LT |
445 | } |
446 | ||
28750975 | 447 | int |
1da177e4 | 448 | xfs_attrmulti_attr_get( |
739bfb2a | 449 | struct inode *inode, |
a9273ca5 DC |
450 | unsigned char *name, |
451 | unsigned char __user *ubuf, | |
1da177e4 LT |
452 | __uint32_t *len, |
453 | __uint32_t flags) | |
454 | { | |
a9273ca5 | 455 | unsigned char *kbuf; |
1da177e4 | 456 | int error = EFAULT; |
e8b0ebaa | 457 | |
1da177e4 LT |
458 | if (*len > XATTR_SIZE_MAX) |
459 | return EINVAL; | |
460 | kbuf = kmalloc(*len, GFP_KERNEL); | |
461 | if (!kbuf) | |
462 | return ENOMEM; | |
463 | ||
e8b0ebaa | 464 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
465 | if (error) |
466 | goto out_kfree; | |
467 | ||
468 | if (copy_to_user(ubuf, kbuf, *len)) | |
469 | error = EFAULT; | |
470 | ||
471 | out_kfree: | |
472 | kfree(kbuf); | |
473 | return error; | |
474 | } | |
475 | ||
28750975 | 476 | int |
1da177e4 | 477 | xfs_attrmulti_attr_set( |
739bfb2a | 478 | struct inode *inode, |
a9273ca5 DC |
479 | unsigned char *name, |
480 | const unsigned char __user *ubuf, | |
1da177e4 LT |
481 | __uint32_t len, |
482 | __uint32_t flags) | |
483 | { | |
a9273ca5 | 484 | unsigned char *kbuf; |
1da177e4 LT |
485 | int error = EFAULT; |
486 | ||
739bfb2a | 487 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
488 | return EPERM; |
489 | if (len > XATTR_SIZE_MAX) | |
490 | return EINVAL; | |
491 | ||
0e639bde LZ |
492 | kbuf = memdup_user(ubuf, len); |
493 | if (IS_ERR(kbuf)) | |
494 | return PTR_ERR(kbuf); | |
e8b0ebaa | 495 | |
739bfb2a | 496 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 497 | |
1da177e4 LT |
498 | return error; |
499 | } | |
500 | ||
28750975 | 501 | int |
1da177e4 | 502 | xfs_attrmulti_attr_remove( |
739bfb2a | 503 | struct inode *inode, |
a9273ca5 | 504 | unsigned char *name, |
1da177e4 LT |
505 | __uint32_t flags) |
506 | { | |
739bfb2a | 507 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 508 | return EPERM; |
739bfb2a | 509 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
510 | } |
511 | ||
512 | STATIC int | |
513 | xfs_attrmulti_by_handle( | |
42a74f20 | 514 | struct file *parfilp, |
d296d30a | 515 | void __user *arg) |
1da177e4 LT |
516 | { |
517 | int error; | |
518 | xfs_attr_multiop_t *ops; | |
519 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 520 | struct dentry *dentry; |
1da177e4 | 521 | unsigned int i, size; |
a9273ca5 | 522 | unsigned char *attr_name; |
1da177e4 LT |
523 | |
524 | if (!capable(CAP_SYS_ADMIN)) | |
525 | return -XFS_ERROR(EPERM); | |
526 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
527 | return -XFS_ERROR(EFAULT); | |
528 | ||
d296d30a CH |
529 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
530 | if (IS_ERR(dentry)) | |
531 | return PTR_ERR(dentry); | |
1da177e4 LT |
532 | |
533 | error = E2BIG; | |
e182f57a | 534 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 535 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 536 | goto out_dput; |
1da177e4 | 537 | |
0e639bde LZ |
538 | ops = memdup_user(am_hreq.ops, size); |
539 | if (IS_ERR(ops)) { | |
540 | error = PTR_ERR(ops); | |
d296d30a | 541 | goto out_dput; |
0e639bde | 542 | } |
1da177e4 LT |
543 | |
544 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
545 | if (!attr_name) | |
546 | goto out_kfree_ops; | |
547 | ||
1da177e4 LT |
548 | error = 0; |
549 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 550 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
551 | ops[i].am_attrname, MAXNAMELEN); |
552 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
553 | error = -ERANGE; | |
554 | if (ops[i].am_error < 0) | |
555 | break; | |
556 | ||
557 | switch (ops[i].am_opcode) { | |
558 | case ATTR_OP_GET: | |
d296d30a CH |
559 | ops[i].am_error = xfs_attrmulti_attr_get( |
560 | dentry->d_inode, attr_name, | |
561 | ops[i].am_attrvalue, &ops[i].am_length, | |
562 | ops[i].am_flags); | |
1da177e4 LT |
563 | break; |
564 | case ATTR_OP_SET: | |
42a74f20 DH |
565 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
566 | if (ops[i].am_error) | |
567 | break; | |
d296d30a CH |
568 | ops[i].am_error = xfs_attrmulti_attr_set( |
569 | dentry->d_inode, attr_name, | |
570 | ops[i].am_attrvalue, ops[i].am_length, | |
571 | ops[i].am_flags); | |
42a74f20 | 572 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
573 | break; |
574 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
575 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
576 | if (ops[i].am_error) | |
577 | break; | |
d296d30a CH |
578 | ops[i].am_error = xfs_attrmulti_attr_remove( |
579 | dentry->d_inode, attr_name, | |
580 | ops[i].am_flags); | |
42a74f20 | 581 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
582 | break; |
583 | default: | |
584 | ops[i].am_error = EINVAL; | |
585 | } | |
586 | } | |
587 | ||
588 | if (copy_to_user(am_hreq.ops, ops, size)) | |
589 | error = XFS_ERROR(EFAULT); | |
590 | ||
591 | kfree(attr_name); | |
592 | out_kfree_ops: | |
593 | kfree(ops); | |
d296d30a CH |
594 | out_dput: |
595 | dput(dentry); | |
1da177e4 LT |
596 | return -error; |
597 | } | |
598 | ||
d5547f9f | 599 | int |
1da177e4 | 600 | xfs_ioc_space( |
993386c1 | 601 | struct xfs_inode *ip, |
f37ea149 | 602 | struct inode *inode, |
1da177e4 LT |
603 | struct file *filp, |
604 | int ioflags, | |
605 | unsigned int cmd, | |
743bb465 | 606 | xfs_flock64_t *bf) |
1da177e4 | 607 | { |
1da177e4 LT |
608 | int attr_flags = 0; |
609 | int error; | |
610 | ||
743bb465 | 611 | /* |
612 | * Only allow the sys admin to reserve space unless | |
613 | * unwritten extents are enabled. | |
614 | */ | |
615 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
616 | !capable(CAP_SYS_ADMIN)) | |
617 | return -XFS_ERROR(EPERM); | |
618 | ||
f37ea149 | 619 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
620 | return -XFS_ERROR(EPERM); |
621 | ||
ad4a8ac4 | 622 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
623 | return -XFS_ERROR(EBADF); |
624 | ||
f37ea149 | 625 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
626 | return -XFS_ERROR(EINVAL); |
627 | ||
1da177e4 | 628 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 629 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 630 | if (ioflags & IO_INVIS) |
0f285c8a | 631 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 632 | |
743bb465 | 633 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
634 | return -error; |
635 | } | |
636 | ||
637 | STATIC int | |
638 | xfs_ioc_bulkstat( | |
639 | xfs_mount_t *mp, | |
640 | unsigned int cmd, | |
641 | void __user *arg) | |
642 | { | |
643 | xfs_fsop_bulkreq_t bulkreq; | |
644 | int count; /* # of records returned */ | |
645 | xfs_ino_t inlast; /* last inode number */ | |
646 | int done; | |
647 | int error; | |
648 | ||
649 | /* done = 1 if there are more stats to get and if bulkstat */ | |
650 | /* should be called again (unused here, but used in dmapi) */ | |
651 | ||
652 | if (!capable(CAP_SYS_ADMIN)) | |
653 | return -EPERM; | |
654 | ||
655 | if (XFS_FORCED_SHUTDOWN(mp)) | |
656 | return -XFS_ERROR(EIO); | |
657 | ||
658 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
659 | return -XFS_ERROR(EFAULT); | |
660 | ||
661 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
662 | return -XFS_ERROR(EFAULT); | |
663 | ||
664 | if ((count = bulkreq.icount) <= 0) | |
665 | return -XFS_ERROR(EINVAL); | |
666 | ||
cd57e594 LM |
667 | if (bulkreq.ubuffer == NULL) |
668 | return -XFS_ERROR(EINVAL); | |
669 | ||
1da177e4 LT |
670 | if (cmd == XFS_IOC_FSINUMBERS) |
671 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 672 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
673 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
674 | error = xfs_bulkstat_single(mp, &inlast, | |
675 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
676 | else /* XFS_IOC_FSBULKSTAT */ |
677 | error = xfs_bulkstat(mp, &inlast, &count, | |
678 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
679 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
680 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
681 | |
682 | if (error) | |
683 | return -error; | |
684 | ||
685 | if (bulkreq.ocount != NULL) { | |
686 | if (copy_to_user(bulkreq.lastip, &inlast, | |
687 | sizeof(xfs_ino_t))) | |
688 | return -XFS_ERROR(EFAULT); | |
689 | ||
690 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
691 | return -XFS_ERROR(EFAULT); | |
692 | } | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
697 | STATIC int | |
698 | xfs_ioc_fsgeometry_v1( | |
699 | xfs_mount_t *mp, | |
700 | void __user *arg) | |
701 | { | |
702 | xfs_fsop_geom_v1_t fsgeo; | |
703 | int error; | |
704 | ||
705 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
706 | if (error) | |
707 | return -error; | |
708 | ||
709 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
710 | return -XFS_ERROR(EFAULT); | |
711 | return 0; | |
712 | } | |
713 | ||
714 | STATIC int | |
715 | xfs_ioc_fsgeometry( | |
716 | xfs_mount_t *mp, | |
717 | void __user *arg) | |
718 | { | |
719 | xfs_fsop_geom_t fsgeo; | |
720 | int error; | |
721 | ||
722 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
723 | if (error) | |
724 | return -error; | |
725 | ||
726 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
727 | return -XFS_ERROR(EFAULT); | |
728 | return 0; | |
729 | } | |
730 | ||
731 | /* | |
732 | * Linux extended inode flags interface. | |
733 | */ | |
1da177e4 LT |
734 | |
735 | STATIC unsigned int | |
736 | xfs_merge_ioc_xflags( | |
737 | unsigned int flags, | |
738 | unsigned int start) | |
739 | { | |
740 | unsigned int xflags = start; | |
741 | ||
39058a0e | 742 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
743 | xflags |= XFS_XFLAG_IMMUTABLE; |
744 | else | |
745 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 746 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
747 | xflags |= XFS_XFLAG_APPEND; |
748 | else | |
749 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 750 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
751 | xflags |= XFS_XFLAG_SYNC; |
752 | else | |
753 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 754 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
755 | xflags |= XFS_XFLAG_NOATIME; |
756 | else | |
757 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 758 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
759 | xflags |= XFS_XFLAG_NODUMP; |
760 | else | |
761 | xflags &= ~XFS_XFLAG_NODUMP; | |
762 | ||
763 | return xflags; | |
764 | } | |
765 | ||
766 | STATIC unsigned int | |
767 | xfs_di2lxflags( | |
768 | __uint16_t di_flags) | |
769 | { | |
770 | unsigned int flags = 0; | |
771 | ||
772 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 773 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 774 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 775 | flags |= FS_APPEND_FL; |
1da177e4 | 776 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 777 | flags |= FS_SYNC_FL; |
1da177e4 | 778 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 779 | flags |= FS_NOATIME_FL; |
1da177e4 | 780 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 781 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
782 | return flags; |
783 | } | |
784 | ||
c83bfab1 CH |
785 | STATIC int |
786 | xfs_ioc_fsgetxattr( | |
787 | xfs_inode_t *ip, | |
788 | int attr, | |
789 | void __user *arg) | |
790 | { | |
791 | struct fsxattr fa; | |
792 | ||
793 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
794 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
795 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
796 | fa.fsx_projid = ip->i_d.di_projid; | |
797 | ||
798 | if (attr) { | |
799 | if (ip->i_afp) { | |
800 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
801 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
802 | sizeof(xfs_bmbt_rec_t); | |
803 | else | |
804 | fa.fsx_nextents = ip->i_d.di_anextents; | |
805 | } else | |
806 | fa.fsx_nextents = 0; | |
807 | } else { | |
808 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
809 | fa.fsx_nextents = ip->i_df.if_bytes / | |
810 | sizeof(xfs_bmbt_rec_t); | |
811 | else | |
812 | fa.fsx_nextents = ip->i_d.di_nextents; | |
813 | } | |
814 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
815 | ||
816 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
817 | return -EFAULT; | |
818 | return 0; | |
819 | } | |
820 | ||
25fe55e8 CH |
821 | STATIC void |
822 | xfs_set_diflags( | |
823 | struct xfs_inode *ip, | |
824 | unsigned int xflags) | |
825 | { | |
826 | unsigned int di_flags; | |
827 | ||
828 | /* can't set PREALLOC this way, just preserve it */ | |
829 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
830 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
831 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
832 | if (xflags & XFS_XFLAG_APPEND) | |
833 | di_flags |= XFS_DIFLAG_APPEND; | |
834 | if (xflags & XFS_XFLAG_SYNC) | |
835 | di_flags |= XFS_DIFLAG_SYNC; | |
836 | if (xflags & XFS_XFLAG_NOATIME) | |
837 | di_flags |= XFS_DIFLAG_NOATIME; | |
838 | if (xflags & XFS_XFLAG_NODUMP) | |
839 | di_flags |= XFS_DIFLAG_NODUMP; | |
840 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
841 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
842 | if (xflags & XFS_XFLAG_NODEFRAG) | |
843 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
844 | if (xflags & XFS_XFLAG_FILESTREAM) | |
845 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
846 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
847 | if (xflags & XFS_XFLAG_RTINHERIT) | |
848 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
849 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
850 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
851 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
852 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
853 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
854 | if (xflags & XFS_XFLAG_REALTIME) | |
855 | di_flags |= XFS_DIFLAG_REALTIME; | |
856 | if (xflags & XFS_XFLAG_EXTSIZE) | |
857 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
858 | } | |
859 | ||
860 | ip->i_d.di_flags = di_flags; | |
861 | } | |
862 | ||
f13fae2d CH |
863 | STATIC void |
864 | xfs_diflags_to_linux( | |
865 | struct xfs_inode *ip) | |
866 | { | |
e4f75291 | 867 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
868 | unsigned int xflags = xfs_ip2xflags(ip); |
869 | ||
870 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
871 | inode->i_flags |= S_IMMUTABLE; | |
872 | else | |
873 | inode->i_flags &= ~S_IMMUTABLE; | |
874 | if (xflags & XFS_XFLAG_APPEND) | |
875 | inode->i_flags |= S_APPEND; | |
876 | else | |
877 | inode->i_flags &= ~S_APPEND; | |
878 | if (xflags & XFS_XFLAG_SYNC) | |
879 | inode->i_flags |= S_SYNC; | |
880 | else | |
881 | inode->i_flags &= ~S_SYNC; | |
882 | if (xflags & XFS_XFLAG_NOATIME) | |
883 | inode->i_flags |= S_NOATIME; | |
884 | else | |
885 | inode->i_flags &= ~S_NOATIME; | |
886 | } | |
25fe55e8 CH |
887 | |
888 | #define FSX_PROJID 1 | |
889 | #define FSX_EXTSIZE 2 | |
890 | #define FSX_XFLAGS 4 | |
891 | #define FSX_NONBLOCK 8 | |
892 | ||
893 | STATIC int | |
894 | xfs_ioctl_setattr( | |
895 | xfs_inode_t *ip, | |
896 | struct fsxattr *fa, | |
897 | int mask) | |
898 | { | |
899 | struct xfs_mount *mp = ip->i_mount; | |
900 | struct xfs_trans *tp; | |
901 | unsigned int lock_flags = 0; | |
7d095257 CH |
902 | struct xfs_dquot *udqp = NULL; |
903 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
904 | struct xfs_dquot *olddquot = NULL; |
905 | int code; | |
906 | ||
907 | xfs_itrace_entry(ip); | |
908 | ||
909 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
910 | return XFS_ERROR(EROFS); | |
911 | if (XFS_FORCED_SHUTDOWN(mp)) | |
912 | return XFS_ERROR(EIO); | |
913 | ||
914 | /* | |
915 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
916 | * before we start any other transactions. Trying to do this later | |
917 | * is messy. We don't care to take a readlock to look at the ids | |
918 | * in inode here, because we can't hold it across the trans_reserve. | |
919 | * If the IDs do change before we take the ilock, we're covered | |
920 | * because the i_*dquot fields will get updated anyway. | |
921 | */ | |
922 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 923 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
924 | ip->i_d.di_gid, fa->fsx_projid, |
925 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
926 | if (code) | |
927 | return code; | |
928 | } | |
929 | ||
930 | /* | |
931 | * For the other attributes, we acquire the inode lock and | |
932 | * first do an error checking pass. | |
933 | */ | |
934 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
935 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
936 | if (code) | |
937 | goto error_return; | |
938 | ||
939 | lock_flags = XFS_ILOCK_EXCL; | |
940 | xfs_ilock(ip, lock_flags); | |
941 | ||
942 | /* | |
943 | * CAP_FOWNER overrides the following restrictions: | |
944 | * | |
945 | * The user ID of the calling process must be equal | |
946 | * to the file owner ID, except in cases where the | |
947 | * CAP_FSETID capability is applicable. | |
948 | */ | |
91b77712 | 949 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
950 | code = XFS_ERROR(EPERM); |
951 | goto error_return; | |
952 | } | |
953 | ||
954 | /* | |
955 | * Do a quota reservation only if projid is actually going to change. | |
956 | */ | |
957 | if (mask & FSX_PROJID) { | |
7d095257 CH |
958 | if (XFS_IS_QUOTA_RUNNING(mp) && |
959 | XFS_IS_PQUOTA_ON(mp) && | |
25fe55e8 CH |
960 | ip->i_d.di_projid != fa->fsx_projid) { |
961 | ASSERT(tp); | |
7d095257 | 962 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
963 | capable(CAP_FOWNER) ? |
964 | XFS_QMOPT_FORCE_RES : 0); | |
965 | if (code) /* out of quota */ | |
966 | goto error_return; | |
967 | } | |
968 | } | |
969 | ||
970 | if (mask & FSX_EXTSIZE) { | |
971 | /* | |
972 | * Can't change extent size if any extents are allocated. | |
973 | */ | |
974 | if (ip->i_d.di_nextents && | |
975 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
976 | fa->fsx_extsize)) { | |
977 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
978 | goto error_return; | |
979 | } | |
980 | ||
981 | /* | |
982 | * Extent size must be a multiple of the appropriate block | |
983 | * size, if set at all. | |
984 | */ | |
985 | if (fa->fsx_extsize != 0) { | |
986 | xfs_extlen_t size; | |
987 | ||
988 | if (XFS_IS_REALTIME_INODE(ip) || | |
989 | ((mask & FSX_XFLAGS) && | |
990 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
991 | size = mp->m_sb.sb_rextsize << | |
992 | mp->m_sb.sb_blocklog; | |
993 | } else { | |
994 | size = mp->m_sb.sb_blocksize; | |
995 | } | |
996 | ||
997 | if (fa->fsx_extsize % size) { | |
998 | code = XFS_ERROR(EINVAL); | |
999 | goto error_return; | |
1000 | } | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | ||
1005 | if (mask & FSX_XFLAGS) { | |
1006 | /* | |
1007 | * Can't change realtime flag if any extents are allocated. | |
1008 | */ | |
1009 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1010 | (XFS_IS_REALTIME_INODE(ip)) != | |
1011 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1012 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1013 | goto error_return; | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * If realtime flag is set then must have realtime data. | |
1018 | */ | |
1019 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1020 | if ((mp->m_sb.sb_rblocks == 0) || | |
1021 | (mp->m_sb.sb_rextsize == 0) || | |
1022 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1023 | code = XFS_ERROR(EINVAL); | |
1024 | goto error_return; | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | /* | |
1029 | * Can't modify an immutable/append-only file unless | |
1030 | * we have appropriate permission. | |
1031 | */ | |
1032 | if ((ip->i_d.di_flags & | |
1033 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1034 | (fa->fsx_xflags & | |
1035 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1036 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1037 | code = XFS_ERROR(EPERM); | |
1038 | goto error_return; | |
1039 | } | |
1040 | } | |
1041 | ||
1042 | xfs_trans_ijoin(tp, ip, lock_flags); | |
1043 | xfs_trans_ihold(tp, ip); | |
1044 | ||
1045 | /* | |
1046 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1047 | */ |
1048 | if (mask & FSX_PROJID) { | |
1049 | /* | |
1050 | * CAP_FSETID overrides the following restrictions: | |
1051 | * | |
1052 | * The set-user-ID and set-group-ID bits of a file will be | |
1053 | * cleared upon successful return from chown() | |
1054 | */ | |
1055 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1056 | !capable(CAP_FSETID)) | |
1057 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1058 | ||
1059 | /* | |
1060 | * Change the ownerships and register quota modifications | |
1061 | * in the transaction. | |
1062 | */ | |
1063 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
7d095257 CH |
1064 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1065 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1066 | &ip->i_gdquot, gdqp); |
1067 | } | |
1068 | ip->i_d.di_projid = fa->fsx_projid; | |
1069 | ||
1070 | /* | |
1071 | * We may have to rev the inode as well as | |
1072 | * the superblock version number since projids didn't | |
1073 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1074 | */ | |
51ce16d5 | 1075 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1076 | xfs_bump_ino_vers2(tp, ip); |
1077 | } | |
1078 | ||
1079 | } | |
1080 | ||
1081 | if (mask & FSX_EXTSIZE) | |
1082 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1083 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1084 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1085 | xfs_diflags_to_linux(ip); |
1086 | } | |
25fe55e8 CH |
1087 | |
1088 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1089 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1090 | ||
1091 | XFS_STATS_INC(xs_ig_attrchg); | |
1092 | ||
1093 | /* | |
1094 | * If this is a synchronous mount, make sure that the | |
1095 | * transaction goes to disk before returning to the user. | |
1096 | * This is slightly sub-optimal in that truncates require | |
1097 | * two sync transactions instead of one for wsync filesystems. | |
1098 | * One for the truncate and one for the timestamps since we | |
1099 | * don't want to change the timestamps unless we're sure the | |
1100 | * truncate worked. Truncates are less than 1% of the laddis | |
1101 | * mix so this probably isn't worth the trouble to optimize. | |
1102 | */ | |
1103 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1104 | xfs_trans_set_sync(tp); | |
1105 | code = xfs_trans_commit(tp, 0); | |
1106 | xfs_iunlock(ip, lock_flags); | |
1107 | ||
1108 | /* | |
1109 | * Release any dquot(s) the inode had kept before chown. | |
1110 | */ | |
7d095257 CH |
1111 | xfs_qm_dqrele(olddquot); |
1112 | xfs_qm_dqrele(udqp); | |
1113 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1114 | |
1115 | if (code) | |
1116 | return code; | |
1117 | ||
1118 | if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { | |
1119 | XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, | |
1120 | NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, | |
1121 | (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); | |
1122 | } | |
1123 | ||
25fe55e8 CH |
1124 | return 0; |
1125 | ||
1126 | error_return: | |
7d095257 CH |
1127 | xfs_qm_dqrele(udqp); |
1128 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1129 | xfs_trans_cancel(tp, 0); |
1130 | if (lock_flags) | |
1131 | xfs_iunlock(ip, lock_flags); | |
1132 | return code; | |
1133 | } | |
1134 | ||
1da177e4 | 1135 | STATIC int |
df26cfe8 | 1136 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1137 | xfs_inode_t *ip, |
1138 | struct file *filp, | |
1da177e4 LT |
1139 | void __user *arg) |
1140 | { | |
1141 | struct fsxattr fa; | |
25fe55e8 | 1142 | unsigned int mask; |
df26cfe8 LM |
1143 | |
1144 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1145 | return -EFAULT; | |
1da177e4 | 1146 | |
25fe55e8 | 1147 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1148 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1149 | mask |= FSX_NONBLOCK; |
1da177e4 | 1150 | |
25fe55e8 | 1151 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1152 | } |
1da177e4 | 1153 | |
df26cfe8 LM |
1154 | STATIC int |
1155 | xfs_ioc_getxflags( | |
1156 | xfs_inode_t *ip, | |
1157 | void __user *arg) | |
1158 | { | |
1159 | unsigned int flags; | |
1da177e4 | 1160 | |
df26cfe8 LM |
1161 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1162 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1163 | return -EFAULT; | |
1164 | return 0; | |
1165 | } | |
1da177e4 | 1166 | |
df26cfe8 LM |
1167 | STATIC int |
1168 | xfs_ioc_setxflags( | |
1169 | xfs_inode_t *ip, | |
1170 | struct file *filp, | |
1171 | void __user *arg) | |
1172 | { | |
25fe55e8 | 1173 | struct fsxattr fa; |
df26cfe8 | 1174 | unsigned int flags; |
25fe55e8 | 1175 | unsigned int mask; |
1da177e4 | 1176 | |
df26cfe8 LM |
1177 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1178 | return -EFAULT; | |
1da177e4 | 1179 | |
df26cfe8 LM |
1180 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1181 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1182 | FS_SYNC_FL)) | |
1183 | return -EOPNOTSUPP; | |
1da177e4 | 1184 | |
25fe55e8 | 1185 | mask = FSX_XFLAGS; |
df26cfe8 | 1186 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1187 | mask |= FSX_NONBLOCK; |
1188 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1189 | |
25fe55e8 | 1190 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1191 | } |
1192 | ||
8a7141a8 ES |
1193 | STATIC int |
1194 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1195 | { | |
1196 | struct getbmap __user *base = *ap; | |
1197 | ||
1198 | /* copy only getbmap portion (not getbmapx) */ | |
1199 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1200 | return XFS_ERROR(EFAULT); | |
1201 | ||
1202 | *ap += sizeof(struct getbmap); | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1da177e4 LT |
1206 | STATIC int |
1207 | xfs_ioc_getbmap( | |
993386c1 | 1208 | struct xfs_inode *ip, |
1da177e4 LT |
1209 | int ioflags, |
1210 | unsigned int cmd, | |
1211 | void __user *arg) | |
1212 | { | |
8a7141a8 | 1213 | struct getbmapx bmx; |
1da177e4 LT |
1214 | int error; |
1215 | ||
8a7141a8 | 1216 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1217 | return -XFS_ERROR(EFAULT); |
1218 | ||
8a7141a8 | 1219 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1220 | return -XFS_ERROR(EINVAL); |
1221 | ||
8a7141a8 | 1222 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1223 | if (ioflags & IO_INVIS) |
8a7141a8 | 1224 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1225 | |
8a7141a8 ES |
1226 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1227 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1228 | if (error) |
1229 | return -error; | |
1230 | ||
8a7141a8 ES |
1231 | /* copy back header - only size of getbmap */ |
1232 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1233 | return -XFS_ERROR(EFAULT); |
1234 | return 0; | |
1235 | } | |
1236 | ||
8a7141a8 ES |
1237 | STATIC int |
1238 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1239 | { | |
1240 | struct getbmapx __user *base = *ap; | |
1241 | ||
1242 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1243 | return XFS_ERROR(EFAULT); | |
1244 | ||
1245 | *ap += sizeof(struct getbmapx); | |
1246 | return 0; | |
1247 | } | |
1248 | ||
1da177e4 LT |
1249 | STATIC int |
1250 | xfs_ioc_getbmapx( | |
993386c1 | 1251 | struct xfs_inode *ip, |
1da177e4 LT |
1252 | void __user *arg) |
1253 | { | |
1254 | struct getbmapx bmx; | |
1da177e4 LT |
1255 | int error; |
1256 | ||
1257 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1258 | return -XFS_ERROR(EFAULT); | |
1259 | ||
1260 | if (bmx.bmv_count < 2) | |
1261 | return -XFS_ERROR(EINVAL); | |
1262 | ||
8a7141a8 | 1263 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1264 | return -XFS_ERROR(EINVAL); |
1265 | ||
8a7141a8 ES |
1266 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1267 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1268 | if (error) |
1269 | return -error; | |
1270 | ||
8a7141a8 ES |
1271 | /* copy back header */ |
1272 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1273 | return -XFS_ERROR(EFAULT); |
1274 | ||
1275 | return 0; | |
1276 | } | |
df26cfe8 | 1277 | |
4d4be482 CH |
1278 | /* |
1279 | * Note: some of the ioctl's return positive numbers as a | |
1280 | * byte count indicating success, such as readlink_by_handle. | |
1281 | * So we don't "sign flip" like most other routines. This means | |
1282 | * true errors need to be returned as a negative value. | |
1283 | */ | |
1284 | long | |
1285 | xfs_file_ioctl( | |
df26cfe8 | 1286 | struct file *filp, |
df26cfe8 | 1287 | unsigned int cmd, |
4d4be482 | 1288 | unsigned long p) |
df26cfe8 LM |
1289 | { |
1290 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1291 | struct xfs_inode *ip = XFS_I(inode); |
1292 | struct xfs_mount *mp = ip->i_mount; | |
1293 | void __user *arg = (void __user *)p; | |
1294 | int ioflags = 0; | |
df26cfe8 LM |
1295 | int error; |
1296 | ||
4d4be482 CH |
1297 | if (filp->f_mode & FMODE_NOCMTIME) |
1298 | ioflags |= IO_INVIS; | |
df26cfe8 | 1299 | |
4d4be482 CH |
1300 | xfs_itrace_entry(ip); |
1301 | ||
1302 | switch (cmd) { | |
df26cfe8 LM |
1303 | case XFS_IOC_ALLOCSP: |
1304 | case XFS_IOC_FREESP: | |
1305 | case XFS_IOC_RESVSP: | |
1306 | case XFS_IOC_UNRESVSP: | |
1307 | case XFS_IOC_ALLOCSP64: | |
1308 | case XFS_IOC_FREESP64: | |
1309 | case XFS_IOC_RESVSP64: | |
743bb465 | 1310 | case XFS_IOC_UNRESVSP64: { |
1311 | xfs_flock64_t bf; | |
df26cfe8 | 1312 | |
743bb465 | 1313 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1314 | return -XFS_ERROR(EFAULT); | |
1315 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1316 | } | |
df26cfe8 LM |
1317 | case XFS_IOC_DIOINFO: { |
1318 | struct dioattr da; | |
1319 | xfs_buftarg_t *target = | |
1320 | XFS_IS_REALTIME_INODE(ip) ? | |
1321 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1322 | ||
1323 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1324 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1325 | ||
1326 | if (copy_to_user(arg, &da, sizeof(da))) | |
1327 | return -XFS_ERROR(EFAULT); | |
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1332 | case XFS_IOC_FSBULKSTAT: | |
1333 | case XFS_IOC_FSINUMBERS: | |
1334 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1335 | ||
1336 | case XFS_IOC_FSGEOMETRY_V1: | |
1337 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1338 | ||
1339 | case XFS_IOC_FSGEOMETRY: | |
1340 | return xfs_ioc_fsgeometry(mp, arg); | |
1341 | ||
1342 | case XFS_IOC_GETVERSION: | |
1343 | return put_user(inode->i_generation, (int __user *)arg); | |
1344 | ||
1345 | case XFS_IOC_FSGETXATTR: | |
1346 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1347 | case XFS_IOC_FSGETXATTRA: | |
1348 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1349 | case XFS_IOC_FSSETXATTR: |
1350 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1351 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1352 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1353 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1354 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1355 | |
1356 | case XFS_IOC_FSSETDM: { | |
1357 | struct fsdmidata dmi; | |
1358 | ||
1359 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1360 | return -XFS_ERROR(EFAULT); | |
1361 | ||
1362 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1363 | dmi.fsd_dmstate); | |
1364 | return -error; | |
1365 | } | |
1366 | ||
1367 | case XFS_IOC_GETBMAP: | |
1368 | case XFS_IOC_GETBMAPA: | |
1369 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1370 | ||
1371 | case XFS_IOC_GETBMAPX: | |
1372 | return xfs_ioc_getbmapx(ip, arg); | |
1373 | ||
1374 | case XFS_IOC_FD_TO_HANDLE: | |
1375 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1376 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1377 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1378 | |
743bb465 | 1379 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1380 | return -XFS_ERROR(EFAULT); | |
1381 | return xfs_find_handle(cmd, &hreq); | |
1382 | } | |
1383 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1384 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1385 | |
743bb465 | 1386 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1387 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1388 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1389 | } |
df26cfe8 | 1390 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1391 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1392 | |
743bb465 | 1393 | case XFS_IOC_READLINK_BY_HANDLE: { |
1394 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1395 | |
743bb465 | 1396 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1397 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1398 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1399 | } |
df26cfe8 | 1400 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1401 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1402 | |
1403 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1404 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1405 | |
1406 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1407 | struct xfs_swapext sxp; |
1408 | ||
1409 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1410 | return -XFS_ERROR(EFAULT); | |
1411 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1412 | return -error; |
1413 | } | |
1414 | ||
1415 | case XFS_IOC_FSCOUNTS: { | |
1416 | xfs_fsop_counts_t out; | |
1417 | ||
1418 | error = xfs_fs_counts(mp, &out); | |
1419 | if (error) | |
1420 | return -error; | |
1421 | ||
1422 | if (copy_to_user(arg, &out, sizeof(out))) | |
1423 | return -XFS_ERROR(EFAULT); | |
1424 | return 0; | |
1425 | } | |
1426 | ||
1427 | case XFS_IOC_SET_RESBLKS: { | |
1428 | xfs_fsop_resblks_t inout; | |
1429 | __uint64_t in; | |
1430 | ||
1431 | if (!capable(CAP_SYS_ADMIN)) | |
1432 | return -EPERM; | |
1433 | ||
1434 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1435 | return -XFS_ERROR(EFAULT); | |
1436 | ||
1437 | /* input parameter is passed in resblks field of structure */ | |
1438 | in = inout.resblks; | |
1439 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1440 | if (error) | |
1441 | return -error; | |
1442 | ||
1443 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1444 | return -XFS_ERROR(EFAULT); | |
1445 | return 0; | |
1446 | } | |
1447 | ||
1448 | case XFS_IOC_GET_RESBLKS: { | |
1449 | xfs_fsop_resblks_t out; | |
1450 | ||
1451 | if (!capable(CAP_SYS_ADMIN)) | |
1452 | return -EPERM; | |
1453 | ||
1454 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1455 | if (error) | |
1456 | return -error; | |
1457 | ||
1458 | if (copy_to_user(arg, &out, sizeof(out))) | |
1459 | return -XFS_ERROR(EFAULT); | |
1460 | ||
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | case XFS_IOC_FSGROWFSDATA: { | |
1465 | xfs_growfs_data_t in; | |
1466 | ||
df26cfe8 LM |
1467 | if (copy_from_user(&in, arg, sizeof(in))) |
1468 | return -XFS_ERROR(EFAULT); | |
1469 | ||
1470 | error = xfs_growfs_data(mp, &in); | |
1471 | return -error; | |
1472 | } | |
1473 | ||
1474 | case XFS_IOC_FSGROWFSLOG: { | |
1475 | xfs_growfs_log_t in; | |
1476 | ||
df26cfe8 LM |
1477 | if (copy_from_user(&in, arg, sizeof(in))) |
1478 | return -XFS_ERROR(EFAULT); | |
1479 | ||
1480 | error = xfs_growfs_log(mp, &in); | |
1481 | return -error; | |
1482 | } | |
1483 | ||
1484 | case XFS_IOC_FSGROWFSRT: { | |
1485 | xfs_growfs_rt_t in; | |
1486 | ||
df26cfe8 LM |
1487 | if (copy_from_user(&in, arg, sizeof(in))) |
1488 | return -XFS_ERROR(EFAULT); | |
1489 | ||
1490 | error = xfs_growfs_rt(mp, &in); | |
1491 | return -error; | |
1492 | } | |
1493 | ||
df26cfe8 LM |
1494 | case XFS_IOC_GOINGDOWN: { |
1495 | __uint32_t in; | |
1496 | ||
1497 | if (!capable(CAP_SYS_ADMIN)) | |
1498 | return -EPERM; | |
1499 | ||
1500 | if (get_user(in, (__uint32_t __user *)arg)) | |
1501 | return -XFS_ERROR(EFAULT); | |
1502 | ||
1503 | error = xfs_fs_goingdown(mp, in); | |
1504 | return -error; | |
1505 | } | |
1506 | ||
1507 | case XFS_IOC_ERROR_INJECTION: { | |
1508 | xfs_error_injection_t in; | |
1509 | ||
1510 | if (!capable(CAP_SYS_ADMIN)) | |
1511 | return -EPERM; | |
1512 | ||
1513 | if (copy_from_user(&in, arg, sizeof(in))) | |
1514 | return -XFS_ERROR(EFAULT); | |
1515 | ||
1516 | error = xfs_errortag_add(in.errtag, mp); | |
1517 | return -error; | |
1518 | } | |
1519 | ||
1520 | case XFS_IOC_ERROR_CLEARALL: | |
1521 | if (!capable(CAP_SYS_ADMIN)) | |
1522 | return -EPERM; | |
1523 | ||
1524 | error = xfs_errortag_clearall(mp, 1); | |
1525 | return -error; | |
1526 | ||
1527 | default: | |
1528 | return -ENOTTY; | |
1529 | } | |
1530 | } |