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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 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" | |
1da177e4 | 53 | |
16f7e0fe | 54 | #include <linux/capability.h> |
1da177e4 LT |
55 | #include <linux/dcache.h> |
56 | #include <linux/mount.h> | |
57 | #include <linux/namei.h> | |
58 | #include <linux/pagemap.h> | |
59 | ||
60 | /* | |
61 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
62 | * a file or fs handle. | |
63 | * | |
64 | * XFS_IOC_PATH_TO_FSHANDLE | |
65 | * returns fs handle for a mount point or path within that mount point | |
66 | * XFS_IOC_FD_TO_HANDLE | |
67 | * returns full handle for a FD opened in user space | |
68 | * XFS_IOC_PATH_TO_HANDLE | |
69 | * returns full handle for a path | |
70 | */ | |
d5547f9f | 71 | int |
1da177e4 LT |
72 | xfs_find_handle( |
73 | unsigned int cmd, | |
743bb465 | 74 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
75 | { |
76 | int hsize; | |
77 | xfs_handle_t handle; | |
1da177e4 | 78 | struct inode *inode; |
1da177e4 | 79 | |
1da177e4 LT |
80 | memset((char *)&handle, 0, sizeof(handle)); |
81 | ||
82 | switch (cmd) { | |
83 | case XFS_IOC_PATH_TO_FSHANDLE: | |
84 | case XFS_IOC_PATH_TO_HANDLE: { | |
2d8f3038 | 85 | struct path path; |
743bb465 | 86 | int error = user_lpath((const char __user *)hreq->path, &path); |
1da177e4 LT |
87 | if (error) |
88 | return error; | |
89 | ||
2d8f3038 AV |
90 | ASSERT(path.dentry); |
91 | ASSERT(path.dentry->d_inode); | |
92 | inode = igrab(path.dentry->d_inode); | |
93 | path_put(&path); | |
1da177e4 LT |
94 | break; |
95 | } | |
96 | ||
97 | case XFS_IOC_FD_TO_HANDLE: { | |
98 | struct file *file; | |
99 | ||
743bb465 | 100 | file = fget(hreq->fd); |
1da177e4 LT |
101 | if (!file) |
102 | return -EBADF; | |
103 | ||
e678fb0d JJS |
104 | ASSERT(file->f_path.dentry); |
105 | ASSERT(file->f_path.dentry->d_inode); | |
106 | inode = igrab(file->f_path.dentry->d_inode); | |
1da177e4 LT |
107 | fput(file); |
108 | break; | |
109 | } | |
110 | ||
111 | default: | |
112 | ASSERT(0); | |
113 | return -XFS_ERROR(EINVAL); | |
114 | } | |
115 | ||
116 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
117 | /* we're not in XFS anymore, Toto */ | |
118 | iput(inode); | |
119 | return -XFS_ERROR(EINVAL); | |
120 | } | |
121 | ||
0432dab2 CH |
122 | switch (inode->i_mode & S_IFMT) { |
123 | case S_IFREG: | |
124 | case S_IFDIR: | |
125 | case S_IFLNK: | |
126 | break; | |
127 | default: | |
1da177e4 LT |
128 | iput(inode); |
129 | return -XFS_ERROR(EBADF); | |
130 | } | |
131 | ||
132 | /* now we can grab the fsid */ | |
0ce4cfd4 | 133 | memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid, |
2f6f7b3d | 134 | sizeof(xfs_fsid_t)); |
1da177e4 LT |
135 | hsize = sizeof(xfs_fsid_t); |
136 | ||
137 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
6e7f75ea | 138 | xfs_inode_t *ip = XFS_I(inode); |
1da177e4 LT |
139 | int lock_mode; |
140 | ||
141 | /* need to get access to the xfs_inode to read the generation */ | |
1da177e4 LT |
142 | lock_mode = xfs_ilock_map_shared(ip); |
143 | ||
144 | /* fill in fid section of handle from inode */ | |
c6143911 CH |
145 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
146 | sizeof(handle.ha_fid.fid_len); | |
147 | handle.ha_fid.fid_pad = 0; | |
148 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
149 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
150 | |
151 | xfs_iunlock_map_shared(ip, lock_mode); | |
152 | ||
153 | hsize = XFS_HSIZE(handle); | |
154 | } | |
155 | ||
156 | /* now copy our handle into the user buffer & write out the size */ | |
743bb465 | 157 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
158 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) { | |
1da177e4 LT |
159 | iput(inode); |
160 | return -XFS_ERROR(EFAULT); | |
161 | } | |
162 | ||
163 | iput(inode); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | ||
168 | /* | |
6e7f75ea CH |
169 | * Convert userspace handle data into inode. |
170 | * | |
171 | * We use the fact that all the fsop_handlereq ioctl calls have a data | |
172 | * structure argument whose first component is always a xfs_fsop_handlereq_t, | |
173 | * so we can pass that sub structure into this handy, shared routine. | |
1da177e4 | 174 | * |
6e7f75ea | 175 | * If no error, caller must always iput the returned inode. |
1da177e4 LT |
176 | */ |
177 | STATIC int | |
178 | xfs_vget_fsop_handlereq( | |
179 | xfs_mount_t *mp, | |
180 | struct inode *parinode, /* parent inode pointer */ | |
181 | xfs_fsop_handlereq_t *hreq, | |
1da177e4 LT |
182 | struct inode **inode) |
183 | { | |
184 | void __user *hanp; | |
185 | size_t hlen; | |
186 | xfs_fid_t *xfid; | |
187 | xfs_handle_t *handlep; | |
188 | xfs_handle_t handle; | |
189 | xfs_inode_t *ip; | |
1da177e4 LT |
190 | xfs_ino_t ino; |
191 | __u32 igen; | |
192 | int error; | |
193 | ||
194 | /* | |
195 | * Only allow handle opens under a directory. | |
196 | */ | |
197 | if (!S_ISDIR(parinode->i_mode)) | |
198 | return XFS_ERROR(ENOTDIR); | |
199 | ||
200 | hanp = hreq->ihandle; | |
201 | hlen = hreq->ihandlen; | |
202 | handlep = &handle; | |
203 | ||
204 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
205 | return XFS_ERROR(EINVAL); | |
206 | if (copy_from_user(handlep, hanp, hlen)) | |
207 | return XFS_ERROR(EFAULT); | |
208 | if (hlen < sizeof(*handlep)) | |
209 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
210 | if (hlen > sizeof(handlep->ha_fsid)) { | |
c6143911 CH |
211 | if (handlep->ha_fid.fid_len != |
212 | (hlen - sizeof(handlep->ha_fsid) - | |
213 | sizeof(handlep->ha_fid.fid_len)) || | |
214 | handlep->ha_fid.fid_pad) | |
1da177e4 LT |
215 | return XFS_ERROR(EINVAL); |
216 | } | |
217 | ||
218 | /* | |
219 | * Crack the handle, obtain the inode # & generation # | |
220 | */ | |
221 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
c6143911 CH |
222 | if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) { |
223 | ino = xfid->fid_ino; | |
224 | igen = xfid->fid_gen; | |
1da177e4 LT |
225 | } else { |
226 | return XFS_ERROR(EINVAL); | |
227 | } | |
228 | ||
229 | /* | |
6e7f75ea | 230 | * Get the XFS inode, building a Linux inode to go with it. |
1da177e4 LT |
231 | */ |
232 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
233 | if (error) | |
234 | return error; | |
235 | if (ip == NULL) | |
236 | return XFS_ERROR(EIO); | |
6a7f422d | 237 | if (ip->i_d.di_gen != igen) { |
1da177e4 LT |
238 | xfs_iput_new(ip, XFS_ILOCK_SHARED); |
239 | return XFS_ERROR(ENOENT); | |
240 | } | |
241 | ||
1da177e4 LT |
242 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
243 | ||
e4f75291 | 244 | *inode = VFS_I(ip); |
1da177e4 LT |
245 | return 0; |
246 | } | |
247 | ||
d5547f9f | 248 | int |
1da177e4 LT |
249 | xfs_open_by_handle( |
250 | xfs_mount_t *mp, | |
743bb465 | 251 | xfs_fsop_handlereq_t *hreq, |
1da177e4 LT |
252 | struct file *parfilp, |
253 | struct inode *parinode) | |
254 | { | |
255 | int error; | |
256 | int new_fd; | |
257 | int permflag; | |
258 | struct file *filp; | |
259 | struct inode *inode; | |
260 | struct dentry *dentry; | |
1da177e4 LT |
261 | |
262 | if (!capable(CAP_SYS_ADMIN)) | |
263 | return -XFS_ERROR(EPERM); | |
1da177e4 | 264 | |
743bb465 | 265 | error = xfs_vget_fsop_handlereq(mp, parinode, hreq, &inode); |
1da177e4 LT |
266 | if (error) |
267 | return -error; | |
268 | ||
269 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
270 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
271 | iput(inode); | |
272 | return -XFS_ERROR(EINVAL); | |
273 | } | |
274 | ||
275 | #if BITS_PER_LONG != 32 | |
743bb465 | 276 | hreq->oflags |= O_LARGEFILE; |
1da177e4 LT |
277 | #endif |
278 | /* Put open permission in namei format. */ | |
743bb465 | 279 | permflag = hreq->oflags; |
1da177e4 LT |
280 | if ((permflag+1) & O_ACCMODE) |
281 | permflag++; | |
282 | if (permflag & O_TRUNC) | |
283 | permflag |= 2; | |
284 | ||
285 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
286 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
287 | iput(inode); | |
288 | return -XFS_ERROR(EPERM); | |
289 | } | |
290 | ||
291 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
292 | iput(inode); | |
293 | return -XFS_ERROR(EACCES); | |
294 | } | |
295 | ||
296 | /* Can't write directories. */ | |
297 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
298 | iput(inode); | |
299 | return -XFS_ERROR(EISDIR); | |
300 | } | |
301 | ||
302 | if ((new_fd = get_unused_fd()) < 0) { | |
303 | iput(inode); | |
304 | return new_fd; | |
305 | } | |
306 | ||
44003728 CH |
307 | dentry = d_obtain_alias(inode); |
308 | if (IS_ERR(dentry)) { | |
1da177e4 | 309 | put_unused_fd(new_fd); |
44003728 | 310 | return PTR_ERR(dentry); |
1da177e4 LT |
311 | } |
312 | ||
313 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
e678fb0d | 314 | mntget(parfilp->f_path.mnt); |
1da177e4 LT |
315 | |
316 | /* Create file pointer. */ | |
743bb465 | 317 | filp = dentry_open(dentry, parfilp->f_path.mnt, hreq->oflags); |
1da177e4 LT |
318 | if (IS_ERR(filp)) { |
319 | put_unused_fd(new_fd); | |
320 | return -XFS_ERROR(-PTR_ERR(filp)); | |
321 | } | |
2e2e7bb1 VA |
322 | if (inode->i_mode & S_IFREG) { |
323 | /* invisible operation should not change atime */ | |
324 | filp->f_flags |= O_NOATIME; | |
3562fd45 | 325 | filp->f_op = &xfs_invis_file_operations; |
2e2e7bb1 | 326 | } |
1da177e4 LT |
327 | |
328 | fd_install(new_fd, filp); | |
329 | return new_fd; | |
330 | } | |
331 | ||
804c83c3 CH |
332 | /* |
333 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
334 | * unused first argument. | |
335 | */ | |
336 | STATIC int | |
337 | do_readlink( | |
338 | char __user *buffer, | |
339 | int buflen, | |
340 | const char *link) | |
341 | { | |
342 | int len; | |
343 | ||
344 | len = PTR_ERR(link); | |
345 | if (IS_ERR(link)) | |
346 | goto out; | |
347 | ||
348 | len = strlen(link); | |
349 | if (len > (unsigned) buflen) | |
350 | len = buflen; | |
351 | if (copy_to_user(buffer, link, len)) | |
352 | len = -EFAULT; | |
353 | out: | |
354 | return len; | |
355 | } | |
356 | ||
357 | ||
d5547f9f | 358 | int |
1da177e4 LT |
359 | xfs_readlink_by_handle( |
360 | xfs_mount_t *mp, | |
743bb465 | 361 | xfs_fsop_handlereq_t *hreq, |
1da177e4 LT |
362 | struct inode *parinode) |
363 | { | |
1da177e4 | 364 | struct inode *inode; |
1da177e4 | 365 | __u32 olen; |
804c83c3 CH |
366 | void *link; |
367 | int error; | |
1da177e4 LT |
368 | |
369 | if (!capable(CAP_SYS_ADMIN)) | |
370 | return -XFS_ERROR(EPERM); | |
1da177e4 | 371 | |
743bb465 | 372 | error = xfs_vget_fsop_handlereq(mp, parinode, hreq, &inode); |
1da177e4 LT |
373 | if (error) |
374 | return -error; | |
375 | ||
376 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 377 | if (!S_ISLNK(inode->i_mode)) { |
804c83c3 CH |
378 | error = -XFS_ERROR(EINVAL); |
379 | goto out_iput; | |
1da177e4 LT |
380 | } |
381 | ||
743bb465 | 382 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 CH |
383 | error = -XFS_ERROR(EFAULT); |
384 | goto out_iput; | |
1da177e4 | 385 | } |
1da177e4 | 386 | |
804c83c3 CH |
387 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
388 | if (!link) | |
389 | goto out_iput; | |
1da177e4 | 390 | |
739bfb2a | 391 | error = -xfs_readlink(XFS_I(inode), link); |
67fcaa73 | 392 | if (error) |
804c83c3 | 393 | goto out_kfree; |
743bb465 | 394 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
395 | if (error) |
396 | goto out_kfree; | |
67fcaa73 | 397 | |
804c83c3 CH |
398 | out_kfree: |
399 | kfree(link); | |
400 | out_iput: | |
401 | iput(inode); | |
402 | return error; | |
1da177e4 LT |
403 | } |
404 | ||
405 | STATIC int | |
406 | xfs_fssetdm_by_handle( | |
407 | xfs_mount_t *mp, | |
408 | void __user *arg, | |
1da177e4 LT |
409 | struct inode *parinode) |
410 | { | |
411 | int error; | |
412 | struct fsdmidata fsd; | |
413 | xfs_fsop_setdm_handlereq_t dmhreq; | |
414 | struct inode *inode; | |
1da177e4 LT |
415 | |
416 | if (!capable(CAP_MKNOD)) | |
417 | return -XFS_ERROR(EPERM); | |
418 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
419 | return -XFS_ERROR(EFAULT); | |
420 | ||
6e7f75ea | 421 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &inode); |
1da177e4 LT |
422 | if (error) |
423 | return -error; | |
424 | ||
425 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
6e7f75ea CH |
426 | error = -XFS_ERROR(EPERM); |
427 | goto out; | |
1da177e4 LT |
428 | } |
429 | ||
430 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
431 | error = -XFS_ERROR(EFAULT); |
432 | goto out; | |
1da177e4 LT |
433 | } |
434 | ||
6e7f75ea CH |
435 | error = -xfs_set_dmattrs(XFS_I(inode), fsd.fsd_dmevmask, |
436 | fsd.fsd_dmstate); | |
1da177e4 | 437 | |
6e7f75ea CH |
438 | out: |
439 | iput(inode); | |
440 | return error; | |
1da177e4 LT |
441 | } |
442 | ||
443 | STATIC int | |
444 | xfs_attrlist_by_handle( | |
445 | xfs_mount_t *mp, | |
446 | void __user *arg, | |
1da177e4 LT |
447 | struct inode *parinode) |
448 | { | |
449 | int error; | |
450 | attrlist_cursor_kern_t *cursor; | |
451 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
452 | struct inode *inode; | |
1da177e4 LT |
453 | char *kbuf; |
454 | ||
455 | if (!capable(CAP_SYS_ADMIN)) | |
456 | return -XFS_ERROR(EPERM); | |
457 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
458 | return -XFS_ERROR(EFAULT); | |
459 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
460 | return -XFS_ERROR(EINVAL); | |
461 | ||
90ad58a8 CH |
462 | /* |
463 | * Reject flags, only allow namespaces. | |
464 | */ | |
465 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
466 | return -XFS_ERROR(EINVAL); | |
467 | ||
6e7f75ea | 468 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, &inode); |
1da177e4 LT |
469 | if (error) |
470 | goto out; | |
471 | ||
472 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
473 | if (!kbuf) | |
474 | goto out_vn_rele; | |
475 | ||
476 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
739bfb2a CH |
477 | error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen, |
478 | al_hreq.flags, cursor); | |
1da177e4 LT |
479 | if (error) |
480 | goto out_kfree; | |
481 | ||
482 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
483 | error = -EFAULT; | |
484 | ||
485 | out_kfree: | |
486 | kfree(kbuf); | |
487 | out_vn_rele: | |
6e7f75ea | 488 | iput(inode); |
1da177e4 LT |
489 | out: |
490 | return -error; | |
491 | } | |
492 | ||
28750975 | 493 | int |
1da177e4 | 494 | xfs_attrmulti_attr_get( |
739bfb2a | 495 | struct inode *inode, |
1da177e4 LT |
496 | char *name, |
497 | char __user *ubuf, | |
498 | __uint32_t *len, | |
499 | __uint32_t flags) | |
500 | { | |
501 | char *kbuf; | |
502 | int error = EFAULT; | |
e8b0ebaa | 503 | |
1da177e4 LT |
504 | if (*len > XATTR_SIZE_MAX) |
505 | return EINVAL; | |
506 | kbuf = kmalloc(*len, GFP_KERNEL); | |
507 | if (!kbuf) | |
508 | return ENOMEM; | |
509 | ||
e8b0ebaa | 510 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
511 | if (error) |
512 | goto out_kfree; | |
513 | ||
514 | if (copy_to_user(ubuf, kbuf, *len)) | |
515 | error = EFAULT; | |
516 | ||
517 | out_kfree: | |
518 | kfree(kbuf); | |
519 | return error; | |
520 | } | |
521 | ||
28750975 | 522 | int |
1da177e4 | 523 | xfs_attrmulti_attr_set( |
739bfb2a | 524 | struct inode *inode, |
1da177e4 LT |
525 | char *name, |
526 | const char __user *ubuf, | |
527 | __uint32_t len, | |
528 | __uint32_t flags) | |
529 | { | |
530 | char *kbuf; | |
531 | int error = EFAULT; | |
532 | ||
739bfb2a | 533 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
534 | return EPERM; |
535 | if (len > XATTR_SIZE_MAX) | |
536 | return EINVAL; | |
537 | ||
538 | kbuf = kmalloc(len, GFP_KERNEL); | |
539 | if (!kbuf) | |
540 | return ENOMEM; | |
541 | ||
542 | if (copy_from_user(kbuf, ubuf, len)) | |
543 | goto out_kfree; | |
e8b0ebaa | 544 | |
739bfb2a | 545 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
546 | |
547 | out_kfree: | |
548 | kfree(kbuf); | |
549 | return error; | |
550 | } | |
551 | ||
28750975 | 552 | int |
1da177e4 | 553 | xfs_attrmulti_attr_remove( |
739bfb2a | 554 | struct inode *inode, |
1da177e4 LT |
555 | char *name, |
556 | __uint32_t flags) | |
557 | { | |
739bfb2a | 558 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 559 | return EPERM; |
739bfb2a | 560 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
561 | } |
562 | ||
563 | STATIC int | |
564 | xfs_attrmulti_by_handle( | |
565 | xfs_mount_t *mp, | |
566 | void __user *arg, | |
42a74f20 | 567 | struct file *parfilp, |
1da177e4 LT |
568 | struct inode *parinode) |
569 | { | |
570 | int error; | |
571 | xfs_attr_multiop_t *ops; | |
572 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
573 | struct inode *inode; | |
1da177e4 LT |
574 | unsigned int i, size; |
575 | char *attr_name; | |
576 | ||
577 | if (!capable(CAP_SYS_ADMIN)) | |
578 | return -XFS_ERROR(EPERM); | |
579 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
580 | return -XFS_ERROR(EFAULT); | |
581 | ||
6e7f75ea | 582 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &inode); |
1da177e4 LT |
583 | if (error) |
584 | goto out; | |
585 | ||
586 | error = E2BIG; | |
e182f57a | 587 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 LT |
588 | if (!size || size > 16 * PAGE_SIZE) |
589 | goto out_vn_rele; | |
590 | ||
591 | error = ENOMEM; | |
592 | ops = kmalloc(size, GFP_KERNEL); | |
593 | if (!ops) | |
594 | goto out_vn_rele; | |
595 | ||
596 | error = EFAULT; | |
597 | if (copy_from_user(ops, am_hreq.ops, size)) | |
598 | goto out_kfree_ops; | |
599 | ||
600 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
601 | if (!attr_name) | |
602 | goto out_kfree_ops; | |
603 | ||
604 | ||
605 | error = 0; | |
606 | for (i = 0; i < am_hreq.opcount; i++) { | |
607 | ops[i].am_error = strncpy_from_user(attr_name, | |
608 | ops[i].am_attrname, MAXNAMELEN); | |
609 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
610 | error = -ERANGE; | |
611 | if (ops[i].am_error < 0) | |
612 | break; | |
613 | ||
614 | switch (ops[i].am_opcode) { | |
615 | case ATTR_OP_GET: | |
739bfb2a | 616 | ops[i].am_error = xfs_attrmulti_attr_get(inode, |
1da177e4 LT |
617 | attr_name, ops[i].am_attrvalue, |
618 | &ops[i].am_length, ops[i].am_flags); | |
619 | break; | |
620 | case ATTR_OP_SET: | |
42a74f20 DH |
621 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
622 | if (ops[i].am_error) | |
623 | break; | |
739bfb2a | 624 | ops[i].am_error = xfs_attrmulti_attr_set(inode, |
1da177e4 LT |
625 | attr_name, ops[i].am_attrvalue, |
626 | ops[i].am_length, ops[i].am_flags); | |
42a74f20 | 627 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
628 | break; |
629 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
630 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
631 | if (ops[i].am_error) | |
632 | break; | |
739bfb2a | 633 | ops[i].am_error = xfs_attrmulti_attr_remove(inode, |
1da177e4 | 634 | attr_name, ops[i].am_flags); |
42a74f20 | 635 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
636 | break; |
637 | default: | |
638 | ops[i].am_error = EINVAL; | |
639 | } | |
640 | } | |
641 | ||
642 | if (copy_to_user(am_hreq.ops, ops, size)) | |
643 | error = XFS_ERROR(EFAULT); | |
644 | ||
645 | kfree(attr_name); | |
646 | out_kfree_ops: | |
647 | kfree(ops); | |
648 | out_vn_rele: | |
6e7f75ea | 649 | iput(inode); |
1da177e4 LT |
650 | out: |
651 | return -error; | |
652 | } | |
653 | ||
d5547f9f | 654 | int |
1da177e4 | 655 | xfs_ioc_space( |
993386c1 | 656 | struct xfs_inode *ip, |
f37ea149 | 657 | struct inode *inode, |
1da177e4 LT |
658 | struct file *filp, |
659 | int ioflags, | |
660 | unsigned int cmd, | |
743bb465 | 661 | xfs_flock64_t *bf) |
1da177e4 | 662 | { |
1da177e4 LT |
663 | int attr_flags = 0; |
664 | int error; | |
665 | ||
743bb465 | 666 | /* |
667 | * Only allow the sys admin to reserve space unless | |
668 | * unwritten extents are enabled. | |
669 | */ | |
670 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
671 | !capable(CAP_SYS_ADMIN)) | |
672 | return -XFS_ERROR(EPERM); | |
673 | ||
f37ea149 | 674 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
675 | return -XFS_ERROR(EPERM); |
676 | ||
ad4a8ac4 | 677 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
678 | return -XFS_ERROR(EBADF); |
679 | ||
f37ea149 | 680 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
681 | return -XFS_ERROR(EINVAL); |
682 | ||
1da177e4 | 683 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 684 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 685 | if (ioflags & IO_INVIS) |
0f285c8a | 686 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 687 | |
743bb465 | 688 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
689 | return -error; |
690 | } | |
691 | ||
692 | STATIC int | |
693 | xfs_ioc_bulkstat( | |
694 | xfs_mount_t *mp, | |
695 | unsigned int cmd, | |
696 | void __user *arg) | |
697 | { | |
698 | xfs_fsop_bulkreq_t bulkreq; | |
699 | int count; /* # of records returned */ | |
700 | xfs_ino_t inlast; /* last inode number */ | |
701 | int done; | |
702 | int error; | |
703 | ||
704 | /* done = 1 if there are more stats to get and if bulkstat */ | |
705 | /* should be called again (unused here, but used in dmapi) */ | |
706 | ||
707 | if (!capable(CAP_SYS_ADMIN)) | |
708 | return -EPERM; | |
709 | ||
710 | if (XFS_FORCED_SHUTDOWN(mp)) | |
711 | return -XFS_ERROR(EIO); | |
712 | ||
713 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
714 | return -XFS_ERROR(EFAULT); | |
715 | ||
716 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
717 | return -XFS_ERROR(EFAULT); | |
718 | ||
719 | if ((count = bulkreq.icount) <= 0) | |
720 | return -XFS_ERROR(EINVAL); | |
721 | ||
cd57e594 LM |
722 | if (bulkreq.ubuffer == NULL) |
723 | return -XFS_ERROR(EINVAL); | |
724 | ||
1da177e4 LT |
725 | if (cmd == XFS_IOC_FSINUMBERS) |
726 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 727 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
728 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
729 | error = xfs_bulkstat_single(mp, &inlast, | |
730 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
731 | else /* XFS_IOC_FSBULKSTAT */ |
732 | error = xfs_bulkstat(mp, &inlast, &count, | |
733 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
734 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
735 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
736 | |
737 | if (error) | |
738 | return -error; | |
739 | ||
740 | if (bulkreq.ocount != NULL) { | |
741 | if (copy_to_user(bulkreq.lastip, &inlast, | |
742 | sizeof(xfs_ino_t))) | |
743 | return -XFS_ERROR(EFAULT); | |
744 | ||
745 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
746 | return -XFS_ERROR(EFAULT); | |
747 | } | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | STATIC int | |
753 | xfs_ioc_fsgeometry_v1( | |
754 | xfs_mount_t *mp, | |
755 | void __user *arg) | |
756 | { | |
757 | xfs_fsop_geom_v1_t fsgeo; | |
758 | int error; | |
759 | ||
760 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
761 | if (error) | |
762 | return -error; | |
763 | ||
764 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
765 | return -XFS_ERROR(EFAULT); | |
766 | return 0; | |
767 | } | |
768 | ||
769 | STATIC int | |
770 | xfs_ioc_fsgeometry( | |
771 | xfs_mount_t *mp, | |
772 | void __user *arg) | |
773 | { | |
774 | xfs_fsop_geom_t fsgeo; | |
775 | int error; | |
776 | ||
777 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
778 | if (error) | |
779 | return -error; | |
780 | ||
781 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
782 | return -XFS_ERROR(EFAULT); | |
783 | return 0; | |
784 | } | |
785 | ||
786 | /* | |
787 | * Linux extended inode flags interface. | |
788 | */ | |
1da177e4 LT |
789 | |
790 | STATIC unsigned int | |
791 | xfs_merge_ioc_xflags( | |
792 | unsigned int flags, | |
793 | unsigned int start) | |
794 | { | |
795 | unsigned int xflags = start; | |
796 | ||
39058a0e | 797 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
798 | xflags |= XFS_XFLAG_IMMUTABLE; |
799 | else | |
800 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 801 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
802 | xflags |= XFS_XFLAG_APPEND; |
803 | else | |
804 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 805 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
806 | xflags |= XFS_XFLAG_SYNC; |
807 | else | |
808 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 809 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
810 | xflags |= XFS_XFLAG_NOATIME; |
811 | else | |
812 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 813 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
814 | xflags |= XFS_XFLAG_NODUMP; |
815 | else | |
816 | xflags &= ~XFS_XFLAG_NODUMP; | |
817 | ||
818 | return xflags; | |
819 | } | |
820 | ||
821 | STATIC unsigned int | |
822 | xfs_di2lxflags( | |
823 | __uint16_t di_flags) | |
824 | { | |
825 | unsigned int flags = 0; | |
826 | ||
827 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 828 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 829 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 830 | flags |= FS_APPEND_FL; |
1da177e4 | 831 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 832 | flags |= FS_SYNC_FL; |
1da177e4 | 833 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 834 | flags |= FS_NOATIME_FL; |
1da177e4 | 835 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 836 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
837 | return flags; |
838 | } | |
839 | ||
c83bfab1 CH |
840 | STATIC int |
841 | xfs_ioc_fsgetxattr( | |
842 | xfs_inode_t *ip, | |
843 | int attr, | |
844 | void __user *arg) | |
845 | { | |
846 | struct fsxattr fa; | |
847 | ||
848 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
849 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
850 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
851 | fa.fsx_projid = ip->i_d.di_projid; | |
852 | ||
853 | if (attr) { | |
854 | if (ip->i_afp) { | |
855 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
856 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
857 | sizeof(xfs_bmbt_rec_t); | |
858 | else | |
859 | fa.fsx_nextents = ip->i_d.di_anextents; | |
860 | } else | |
861 | fa.fsx_nextents = 0; | |
862 | } else { | |
863 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
864 | fa.fsx_nextents = ip->i_df.if_bytes / | |
865 | sizeof(xfs_bmbt_rec_t); | |
866 | else | |
867 | fa.fsx_nextents = ip->i_d.di_nextents; | |
868 | } | |
869 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
870 | ||
871 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
872 | return -EFAULT; | |
873 | return 0; | |
874 | } | |
875 | ||
25fe55e8 CH |
876 | STATIC void |
877 | xfs_set_diflags( | |
878 | struct xfs_inode *ip, | |
879 | unsigned int xflags) | |
880 | { | |
881 | unsigned int di_flags; | |
882 | ||
883 | /* can't set PREALLOC this way, just preserve it */ | |
884 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
885 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
886 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
887 | if (xflags & XFS_XFLAG_APPEND) | |
888 | di_flags |= XFS_DIFLAG_APPEND; | |
889 | if (xflags & XFS_XFLAG_SYNC) | |
890 | di_flags |= XFS_DIFLAG_SYNC; | |
891 | if (xflags & XFS_XFLAG_NOATIME) | |
892 | di_flags |= XFS_DIFLAG_NOATIME; | |
893 | if (xflags & XFS_XFLAG_NODUMP) | |
894 | di_flags |= XFS_DIFLAG_NODUMP; | |
895 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
896 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
897 | if (xflags & XFS_XFLAG_NODEFRAG) | |
898 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
899 | if (xflags & XFS_XFLAG_FILESTREAM) | |
900 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
901 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
902 | if (xflags & XFS_XFLAG_RTINHERIT) | |
903 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
904 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
905 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
906 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
907 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
908 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
909 | if (xflags & XFS_XFLAG_REALTIME) | |
910 | di_flags |= XFS_DIFLAG_REALTIME; | |
911 | if (xflags & XFS_XFLAG_EXTSIZE) | |
912 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
913 | } | |
914 | ||
915 | ip->i_d.di_flags = di_flags; | |
916 | } | |
917 | ||
f13fae2d CH |
918 | STATIC void |
919 | xfs_diflags_to_linux( | |
920 | struct xfs_inode *ip) | |
921 | { | |
e4f75291 | 922 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
923 | unsigned int xflags = xfs_ip2xflags(ip); |
924 | ||
925 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
926 | inode->i_flags |= S_IMMUTABLE; | |
927 | else | |
928 | inode->i_flags &= ~S_IMMUTABLE; | |
929 | if (xflags & XFS_XFLAG_APPEND) | |
930 | inode->i_flags |= S_APPEND; | |
931 | else | |
932 | inode->i_flags &= ~S_APPEND; | |
933 | if (xflags & XFS_XFLAG_SYNC) | |
934 | inode->i_flags |= S_SYNC; | |
935 | else | |
936 | inode->i_flags &= ~S_SYNC; | |
937 | if (xflags & XFS_XFLAG_NOATIME) | |
938 | inode->i_flags |= S_NOATIME; | |
939 | else | |
940 | inode->i_flags &= ~S_NOATIME; | |
941 | } | |
25fe55e8 CH |
942 | |
943 | #define FSX_PROJID 1 | |
944 | #define FSX_EXTSIZE 2 | |
945 | #define FSX_XFLAGS 4 | |
946 | #define FSX_NONBLOCK 8 | |
947 | ||
948 | STATIC int | |
949 | xfs_ioctl_setattr( | |
950 | xfs_inode_t *ip, | |
951 | struct fsxattr *fa, | |
952 | int mask) | |
953 | { | |
954 | struct xfs_mount *mp = ip->i_mount; | |
955 | struct xfs_trans *tp; | |
956 | unsigned int lock_flags = 0; | |
957 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
958 | struct xfs_dquot *olddquot = NULL; | |
959 | int code; | |
960 | ||
961 | xfs_itrace_entry(ip); | |
962 | ||
963 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
964 | return XFS_ERROR(EROFS); | |
965 | if (XFS_FORCED_SHUTDOWN(mp)) | |
966 | return XFS_ERROR(EIO); | |
967 | ||
968 | /* | |
969 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
970 | * before we start any other transactions. Trying to do this later | |
971 | * is messy. We don't care to take a readlock to look at the ids | |
972 | * in inode here, because we can't hold it across the trans_reserve. | |
973 | * If the IDs do change before we take the ilock, we're covered | |
974 | * because the i_*dquot fields will get updated anyway. | |
975 | */ | |
976 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
977 | code = XFS_QM_DQVOPALLOC(mp, ip, ip->i_d.di_uid, | |
978 | ip->i_d.di_gid, fa->fsx_projid, | |
979 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
980 | if (code) | |
981 | return code; | |
982 | } | |
983 | ||
984 | /* | |
985 | * For the other attributes, we acquire the inode lock and | |
986 | * first do an error checking pass. | |
987 | */ | |
988 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
989 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
990 | if (code) | |
991 | goto error_return; | |
992 | ||
993 | lock_flags = XFS_ILOCK_EXCL; | |
994 | xfs_ilock(ip, lock_flags); | |
995 | ||
996 | /* | |
997 | * CAP_FOWNER overrides the following restrictions: | |
998 | * | |
999 | * The user ID of the calling process must be equal | |
1000 | * to the file owner ID, except in cases where the | |
1001 | * CAP_FSETID capability is applicable. | |
1002 | */ | |
91b77712 | 1003 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
1004 | code = XFS_ERROR(EPERM); |
1005 | goto error_return; | |
1006 | } | |
1007 | ||
1008 | /* | |
1009 | * Do a quota reservation only if projid is actually going to change. | |
1010 | */ | |
1011 | if (mask & FSX_PROJID) { | |
1012 | if (XFS_IS_PQUOTA_ON(mp) && | |
1013 | ip->i_d.di_projid != fa->fsx_projid) { | |
1014 | ASSERT(tp); | |
1015 | code = XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, udqp, gdqp, | |
1016 | capable(CAP_FOWNER) ? | |
1017 | XFS_QMOPT_FORCE_RES : 0); | |
1018 | if (code) /* out of quota */ | |
1019 | goto error_return; | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | if (mask & FSX_EXTSIZE) { | |
1024 | /* | |
1025 | * Can't change extent size if any extents are allocated. | |
1026 | */ | |
1027 | if (ip->i_d.di_nextents && | |
1028 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1029 | fa->fsx_extsize)) { | |
1030 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1031 | goto error_return; | |
1032 | } | |
1033 | ||
1034 | /* | |
1035 | * Extent size must be a multiple of the appropriate block | |
1036 | * size, if set at all. | |
1037 | */ | |
1038 | if (fa->fsx_extsize != 0) { | |
1039 | xfs_extlen_t size; | |
1040 | ||
1041 | if (XFS_IS_REALTIME_INODE(ip) || | |
1042 | ((mask & FSX_XFLAGS) && | |
1043 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1044 | size = mp->m_sb.sb_rextsize << | |
1045 | mp->m_sb.sb_blocklog; | |
1046 | } else { | |
1047 | size = mp->m_sb.sb_blocksize; | |
1048 | } | |
1049 | ||
1050 | if (fa->fsx_extsize % size) { | |
1051 | code = XFS_ERROR(EINVAL); | |
1052 | goto error_return; | |
1053 | } | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | ||
1058 | if (mask & FSX_XFLAGS) { | |
1059 | /* | |
1060 | * Can't change realtime flag if any extents are allocated. | |
1061 | */ | |
1062 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1063 | (XFS_IS_REALTIME_INODE(ip)) != | |
1064 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1065 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1066 | goto error_return; | |
1067 | } | |
1068 | ||
1069 | /* | |
1070 | * If realtime flag is set then must have realtime data. | |
1071 | */ | |
1072 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1073 | if ((mp->m_sb.sb_rblocks == 0) || | |
1074 | (mp->m_sb.sb_rextsize == 0) || | |
1075 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1076 | code = XFS_ERROR(EINVAL); | |
1077 | goto error_return; | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | /* | |
1082 | * Can't modify an immutable/append-only file unless | |
1083 | * we have appropriate permission. | |
1084 | */ | |
1085 | if ((ip->i_d.di_flags & | |
1086 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1087 | (fa->fsx_xflags & | |
1088 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1089 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1090 | code = XFS_ERROR(EPERM); | |
1091 | goto error_return; | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | xfs_trans_ijoin(tp, ip, lock_flags); | |
1096 | xfs_trans_ihold(tp, ip); | |
1097 | ||
1098 | /* | |
1099 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1100 | */ |
1101 | if (mask & FSX_PROJID) { | |
1102 | /* | |
1103 | * CAP_FSETID overrides the following restrictions: | |
1104 | * | |
1105 | * The set-user-ID and set-group-ID bits of a file will be | |
1106 | * cleared upon successful return from chown() | |
1107 | */ | |
1108 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1109 | !capable(CAP_FSETID)) | |
1110 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1111 | ||
1112 | /* | |
1113 | * Change the ownerships and register quota modifications | |
1114 | * in the transaction. | |
1115 | */ | |
1116 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
1117 | if (XFS_IS_PQUOTA_ON(mp)) { | |
1118 | olddquot = XFS_QM_DQVOPCHOWN(mp, tp, ip, | |
1119 | &ip->i_gdquot, gdqp); | |
1120 | } | |
1121 | ip->i_d.di_projid = fa->fsx_projid; | |
1122 | ||
1123 | /* | |
1124 | * We may have to rev the inode as well as | |
1125 | * the superblock version number since projids didn't | |
1126 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1127 | */ | |
51ce16d5 | 1128 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1129 | xfs_bump_ino_vers2(tp, ip); |
1130 | } | |
1131 | ||
1132 | } | |
1133 | ||
1134 | if (mask & FSX_EXTSIZE) | |
1135 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1136 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1137 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1138 | xfs_diflags_to_linux(ip); |
1139 | } | |
25fe55e8 CH |
1140 | |
1141 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1142 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1143 | ||
1144 | XFS_STATS_INC(xs_ig_attrchg); | |
1145 | ||
1146 | /* | |
1147 | * If this is a synchronous mount, make sure that the | |
1148 | * transaction goes to disk before returning to the user. | |
1149 | * This is slightly sub-optimal in that truncates require | |
1150 | * two sync transactions instead of one for wsync filesystems. | |
1151 | * One for the truncate and one for the timestamps since we | |
1152 | * don't want to change the timestamps unless we're sure the | |
1153 | * truncate worked. Truncates are less than 1% of the laddis | |
1154 | * mix so this probably isn't worth the trouble to optimize. | |
1155 | */ | |
1156 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1157 | xfs_trans_set_sync(tp); | |
1158 | code = xfs_trans_commit(tp, 0); | |
1159 | xfs_iunlock(ip, lock_flags); | |
1160 | ||
1161 | /* | |
1162 | * Release any dquot(s) the inode had kept before chown. | |
1163 | */ | |
1164 | XFS_QM_DQRELE(mp, olddquot); | |
1165 | XFS_QM_DQRELE(mp, udqp); | |
1166 | XFS_QM_DQRELE(mp, gdqp); | |
1167 | ||
1168 | if (code) | |
1169 | return code; | |
1170 | ||
1171 | if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { | |
1172 | XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, | |
1173 | NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, | |
1174 | (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); | |
1175 | } | |
1176 | ||
25fe55e8 CH |
1177 | return 0; |
1178 | ||
1179 | error_return: | |
1180 | XFS_QM_DQRELE(mp, udqp); | |
1181 | XFS_QM_DQRELE(mp, gdqp); | |
1182 | xfs_trans_cancel(tp, 0); | |
1183 | if (lock_flags) | |
1184 | xfs_iunlock(ip, lock_flags); | |
1185 | return code; | |
1186 | } | |
1187 | ||
1da177e4 | 1188 | STATIC int |
df26cfe8 | 1189 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1190 | xfs_inode_t *ip, |
1191 | struct file *filp, | |
1da177e4 LT |
1192 | void __user *arg) |
1193 | { | |
1194 | struct fsxattr fa; | |
25fe55e8 | 1195 | unsigned int mask; |
df26cfe8 LM |
1196 | |
1197 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1198 | return -EFAULT; | |
1da177e4 | 1199 | |
25fe55e8 | 1200 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1201 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1202 | mask |= FSX_NONBLOCK; |
1da177e4 | 1203 | |
25fe55e8 | 1204 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1205 | } |
1da177e4 | 1206 | |
df26cfe8 LM |
1207 | STATIC int |
1208 | xfs_ioc_getxflags( | |
1209 | xfs_inode_t *ip, | |
1210 | void __user *arg) | |
1211 | { | |
1212 | unsigned int flags; | |
1da177e4 | 1213 | |
df26cfe8 LM |
1214 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1215 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1216 | return -EFAULT; | |
1217 | return 0; | |
1218 | } | |
1da177e4 | 1219 | |
df26cfe8 LM |
1220 | STATIC int |
1221 | xfs_ioc_setxflags( | |
1222 | xfs_inode_t *ip, | |
1223 | struct file *filp, | |
1224 | void __user *arg) | |
1225 | { | |
25fe55e8 | 1226 | struct fsxattr fa; |
df26cfe8 | 1227 | unsigned int flags; |
25fe55e8 | 1228 | unsigned int mask; |
1da177e4 | 1229 | |
df26cfe8 LM |
1230 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1231 | return -EFAULT; | |
1da177e4 | 1232 | |
df26cfe8 LM |
1233 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1234 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1235 | FS_SYNC_FL)) | |
1236 | return -EOPNOTSUPP; | |
1da177e4 | 1237 | |
25fe55e8 | 1238 | mask = FSX_XFLAGS; |
df26cfe8 | 1239 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1240 | mask |= FSX_NONBLOCK; |
1241 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1242 | |
25fe55e8 | 1243 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1244 | } |
1245 | ||
8a7141a8 ES |
1246 | STATIC int |
1247 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1248 | { | |
1249 | struct getbmap __user *base = *ap; | |
1250 | ||
1251 | /* copy only getbmap portion (not getbmapx) */ | |
1252 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1253 | return XFS_ERROR(EFAULT); | |
1254 | ||
1255 | *ap += sizeof(struct getbmap); | |
1256 | return 0; | |
1257 | } | |
1258 | ||
1da177e4 LT |
1259 | STATIC int |
1260 | xfs_ioc_getbmap( | |
993386c1 | 1261 | struct xfs_inode *ip, |
1da177e4 LT |
1262 | int ioflags, |
1263 | unsigned int cmd, | |
1264 | void __user *arg) | |
1265 | { | |
8a7141a8 | 1266 | struct getbmapx bmx; |
1da177e4 LT |
1267 | int error; |
1268 | ||
8a7141a8 | 1269 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1270 | return -XFS_ERROR(EFAULT); |
1271 | ||
8a7141a8 | 1272 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1273 | return -XFS_ERROR(EINVAL); |
1274 | ||
8a7141a8 | 1275 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1276 | if (ioflags & IO_INVIS) |
8a7141a8 | 1277 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1278 | |
8a7141a8 ES |
1279 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1280 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1281 | if (error) |
1282 | return -error; | |
1283 | ||
8a7141a8 ES |
1284 | /* copy back header - only size of getbmap */ |
1285 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1286 | return -XFS_ERROR(EFAULT); |
1287 | return 0; | |
1288 | } | |
1289 | ||
8a7141a8 ES |
1290 | STATIC int |
1291 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1292 | { | |
1293 | struct getbmapx __user *base = *ap; | |
1294 | ||
1295 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1296 | return XFS_ERROR(EFAULT); | |
1297 | ||
1298 | *ap += sizeof(struct getbmapx); | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1da177e4 LT |
1302 | STATIC int |
1303 | xfs_ioc_getbmapx( | |
993386c1 | 1304 | struct xfs_inode *ip, |
1da177e4 LT |
1305 | void __user *arg) |
1306 | { | |
1307 | struct getbmapx bmx; | |
1da177e4 LT |
1308 | int error; |
1309 | ||
1310 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1311 | return -XFS_ERROR(EFAULT); | |
1312 | ||
1313 | if (bmx.bmv_count < 2) | |
1314 | return -XFS_ERROR(EINVAL); | |
1315 | ||
8a7141a8 | 1316 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1317 | return -XFS_ERROR(EINVAL); |
1318 | ||
8a7141a8 ES |
1319 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1320 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1321 | if (error) |
1322 | return -error; | |
1323 | ||
8a7141a8 ES |
1324 | /* copy back header */ |
1325 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1326 | return -XFS_ERROR(EFAULT); |
1327 | ||
1328 | return 0; | |
1329 | } | |
df26cfe8 LM |
1330 | |
1331 | int | |
1332 | xfs_ioctl( | |
1333 | xfs_inode_t *ip, | |
1334 | struct file *filp, | |
1335 | int ioflags, | |
1336 | unsigned int cmd, | |
1337 | void __user *arg) | |
1338 | { | |
1339 | struct inode *inode = filp->f_path.dentry->d_inode; | |
1340 | xfs_mount_t *mp = ip->i_mount; | |
1341 | int error; | |
1342 | ||
1343 | xfs_itrace_entry(XFS_I(inode)); | |
1344 | switch (cmd) { | |
1345 | ||
1346 | case XFS_IOC_ALLOCSP: | |
1347 | case XFS_IOC_FREESP: | |
1348 | case XFS_IOC_RESVSP: | |
1349 | case XFS_IOC_UNRESVSP: | |
1350 | case XFS_IOC_ALLOCSP64: | |
1351 | case XFS_IOC_FREESP64: | |
1352 | case XFS_IOC_RESVSP64: | |
743bb465 | 1353 | case XFS_IOC_UNRESVSP64: { |
1354 | xfs_flock64_t bf; | |
df26cfe8 | 1355 | |
743bb465 | 1356 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1357 | return -XFS_ERROR(EFAULT); | |
1358 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1359 | } | |
df26cfe8 LM |
1360 | case XFS_IOC_DIOINFO: { |
1361 | struct dioattr da; | |
1362 | xfs_buftarg_t *target = | |
1363 | XFS_IS_REALTIME_INODE(ip) ? | |
1364 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1365 | ||
1366 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1367 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1368 | ||
1369 | if (copy_to_user(arg, &da, sizeof(da))) | |
1370 | return -XFS_ERROR(EFAULT); | |
1371 | return 0; | |
1372 | } | |
1373 | ||
1374 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1375 | case XFS_IOC_FSBULKSTAT: | |
1376 | case XFS_IOC_FSINUMBERS: | |
1377 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1378 | ||
1379 | case XFS_IOC_FSGEOMETRY_V1: | |
1380 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1381 | ||
1382 | case XFS_IOC_FSGEOMETRY: | |
1383 | return xfs_ioc_fsgeometry(mp, arg); | |
1384 | ||
1385 | case XFS_IOC_GETVERSION: | |
1386 | return put_user(inode->i_generation, (int __user *)arg); | |
1387 | ||
1388 | case XFS_IOC_FSGETXATTR: | |
1389 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1390 | case XFS_IOC_FSGETXATTRA: | |
1391 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1392 | case XFS_IOC_FSSETXATTR: |
1393 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1394 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1395 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1396 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1397 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1398 | |
1399 | case XFS_IOC_FSSETDM: { | |
1400 | struct fsdmidata dmi; | |
1401 | ||
1402 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1403 | return -XFS_ERROR(EFAULT); | |
1404 | ||
1405 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1406 | dmi.fsd_dmstate); | |
1407 | return -error; | |
1408 | } | |
1409 | ||
1410 | case XFS_IOC_GETBMAP: | |
1411 | case XFS_IOC_GETBMAPA: | |
1412 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1413 | ||
1414 | case XFS_IOC_GETBMAPX: | |
1415 | return xfs_ioc_getbmapx(ip, arg); | |
1416 | ||
1417 | case XFS_IOC_FD_TO_HANDLE: | |
1418 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1419 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1420 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1421 | |
743bb465 | 1422 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1423 | return -XFS_ERROR(EFAULT); | |
1424 | return xfs_find_handle(cmd, &hreq); | |
1425 | } | |
1426 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1427 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1428 | |
743bb465 | 1429 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1430 | return -XFS_ERROR(EFAULT); | |
1431 | return xfs_open_by_handle(mp, &hreq, filp, inode); | |
1432 | } | |
df26cfe8 LM |
1433 | case XFS_IOC_FSSETDM_BY_HANDLE: |
1434 | return xfs_fssetdm_by_handle(mp, arg, inode); | |
1435 | ||
743bb465 | 1436 | case XFS_IOC_READLINK_BY_HANDLE: { |
1437 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1438 | |
743bb465 | 1439 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1440 | return -XFS_ERROR(EFAULT); | |
1441 | return xfs_readlink_by_handle(mp, &hreq, inode); | |
1442 | } | |
df26cfe8 LM |
1443 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
1444 | return xfs_attrlist_by_handle(mp, arg, inode); | |
1445 | ||
1446 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
42a74f20 | 1447 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); |
df26cfe8 LM |
1448 | |
1449 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1450 | struct xfs_swapext sxp; |
1451 | ||
1452 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1453 | return -XFS_ERROR(EFAULT); | |
1454 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1455 | return -error; |
1456 | } | |
1457 | ||
1458 | case XFS_IOC_FSCOUNTS: { | |
1459 | xfs_fsop_counts_t out; | |
1460 | ||
1461 | error = xfs_fs_counts(mp, &out); | |
1462 | if (error) | |
1463 | return -error; | |
1464 | ||
1465 | if (copy_to_user(arg, &out, sizeof(out))) | |
1466 | return -XFS_ERROR(EFAULT); | |
1467 | return 0; | |
1468 | } | |
1469 | ||
1470 | case XFS_IOC_SET_RESBLKS: { | |
1471 | xfs_fsop_resblks_t inout; | |
1472 | __uint64_t in; | |
1473 | ||
1474 | if (!capable(CAP_SYS_ADMIN)) | |
1475 | return -EPERM; | |
1476 | ||
1477 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1478 | return -XFS_ERROR(EFAULT); | |
1479 | ||
1480 | /* input parameter is passed in resblks field of structure */ | |
1481 | in = inout.resblks; | |
1482 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1483 | if (error) | |
1484 | return -error; | |
1485 | ||
1486 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1487 | return -XFS_ERROR(EFAULT); | |
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | case XFS_IOC_GET_RESBLKS: { | |
1492 | xfs_fsop_resblks_t out; | |
1493 | ||
1494 | if (!capable(CAP_SYS_ADMIN)) | |
1495 | return -EPERM; | |
1496 | ||
1497 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1498 | if (error) | |
1499 | return -error; | |
1500 | ||
1501 | if (copy_to_user(arg, &out, sizeof(out))) | |
1502 | return -XFS_ERROR(EFAULT); | |
1503 | ||
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | case XFS_IOC_FSGROWFSDATA: { | |
1508 | xfs_growfs_data_t in; | |
1509 | ||
df26cfe8 LM |
1510 | if (copy_from_user(&in, arg, sizeof(in))) |
1511 | return -XFS_ERROR(EFAULT); | |
1512 | ||
1513 | error = xfs_growfs_data(mp, &in); | |
1514 | return -error; | |
1515 | } | |
1516 | ||
1517 | case XFS_IOC_FSGROWFSLOG: { | |
1518 | xfs_growfs_log_t in; | |
1519 | ||
df26cfe8 LM |
1520 | if (copy_from_user(&in, arg, sizeof(in))) |
1521 | return -XFS_ERROR(EFAULT); | |
1522 | ||
1523 | error = xfs_growfs_log(mp, &in); | |
1524 | return -error; | |
1525 | } | |
1526 | ||
1527 | case XFS_IOC_FSGROWFSRT: { | |
1528 | xfs_growfs_rt_t in; | |
1529 | ||
df26cfe8 LM |
1530 | if (copy_from_user(&in, arg, sizeof(in))) |
1531 | return -XFS_ERROR(EFAULT); | |
1532 | ||
1533 | error = xfs_growfs_rt(mp, &in); | |
1534 | return -error; | |
1535 | } | |
1536 | ||
1537 | case XFS_IOC_FREEZE: | |
1538 | if (!capable(CAP_SYS_ADMIN)) | |
1539 | return -EPERM; | |
1540 | ||
1541 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
1542 | freeze_bdev(inode->i_sb->s_bdev); | |
1543 | return 0; | |
1544 | ||
1545 | case XFS_IOC_THAW: | |
1546 | if (!capable(CAP_SYS_ADMIN)) | |
1547 | return -EPERM; | |
1548 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
1549 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
1550 | return 0; | |
1551 | ||
1552 | case XFS_IOC_GOINGDOWN: { | |
1553 | __uint32_t in; | |
1554 | ||
1555 | if (!capable(CAP_SYS_ADMIN)) | |
1556 | return -EPERM; | |
1557 | ||
1558 | if (get_user(in, (__uint32_t __user *)arg)) | |
1559 | return -XFS_ERROR(EFAULT); | |
1560 | ||
1561 | error = xfs_fs_goingdown(mp, in); | |
1562 | return -error; | |
1563 | } | |
1564 | ||
1565 | case XFS_IOC_ERROR_INJECTION: { | |
1566 | xfs_error_injection_t in; | |
1567 | ||
1568 | if (!capable(CAP_SYS_ADMIN)) | |
1569 | return -EPERM; | |
1570 | ||
1571 | if (copy_from_user(&in, arg, sizeof(in))) | |
1572 | return -XFS_ERROR(EFAULT); | |
1573 | ||
1574 | error = xfs_errortag_add(in.errtag, mp); | |
1575 | return -error; | |
1576 | } | |
1577 | ||
1578 | case XFS_IOC_ERROR_CLEARALL: | |
1579 | if (!capable(CAP_SYS_ADMIN)) | |
1580 | return -EPERM; | |
1581 | ||
1582 | error = xfs_errortag_clearall(mp, 1); | |
1583 | return -error; | |
1584 | ||
1585 | default: | |
1586 | return -ENOTTY; | |
1587 | } | |
1588 | } |