Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
a844f451 | 33 | #include "xfs_attr_sf.h" |
1da177e4 LT |
34 | #include "xfs_dir2_sf.h" |
35 | #include "xfs_dinode.h" | |
36 | #include "xfs_inode.h" | |
a844f451 NS |
37 | #include "xfs_btree.h" |
38 | #include "xfs_ialloc.h" | |
1da177e4 | 39 | #include "xfs_rtalloc.h" |
1da177e4 | 40 | #include "xfs_itable.h" |
a844f451 | 41 | #include "xfs_error.h" |
1da177e4 LT |
42 | #include "xfs_rw.h" |
43 | #include "xfs_acl.h" | |
1da177e4 | 44 | #include "xfs_attr.h" |
a844f451 | 45 | #include "xfs_bmap.h" |
1da177e4 LT |
46 | #include "xfs_buf_item.h" |
47 | #include "xfs_utils.h" | |
48 | #include "xfs_dfrag.h" | |
49 | #include "xfs_fsops.h" | |
993386c1 | 50 | #include "xfs_vnodeops.h" |
1da177e4 | 51 | |
16f7e0fe | 52 | #include <linux/capability.h> |
1da177e4 LT |
53 | #include <linux/dcache.h> |
54 | #include <linux/mount.h> | |
55 | #include <linux/namei.h> | |
56 | #include <linux/pagemap.h> | |
57 | ||
58 | /* | |
59 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
60 | * a file or fs handle. | |
61 | * | |
62 | * XFS_IOC_PATH_TO_FSHANDLE | |
63 | * returns fs handle for a mount point or path within that mount point | |
64 | * XFS_IOC_FD_TO_HANDLE | |
65 | * returns full handle for a FD opened in user space | |
66 | * XFS_IOC_PATH_TO_HANDLE | |
67 | * returns full handle for a path | |
68 | */ | |
69 | STATIC int | |
70 | xfs_find_handle( | |
71 | unsigned int cmd, | |
72 | void __user *arg) | |
73 | { | |
74 | int hsize; | |
75 | xfs_handle_t handle; | |
76 | xfs_fsop_handlereq_t hreq; | |
77 | struct inode *inode; | |
1da177e4 LT |
78 | |
79 | if (copy_from_user(&hreq, arg, sizeof(hreq))) | |
80 | return -XFS_ERROR(EFAULT); | |
81 | ||
82 | memset((char *)&handle, 0, sizeof(handle)); | |
83 | ||
84 | switch (cmd) { | |
85 | case XFS_IOC_PATH_TO_FSHANDLE: | |
86 | case XFS_IOC_PATH_TO_HANDLE: { | |
87 | struct nameidata nd; | |
88 | int error; | |
89 | ||
90 | error = user_path_walk_link((const char __user *)hreq.path, &nd); | |
91 | if (error) | |
92 | return error; | |
93 | ||
4ac91378 JB |
94 | ASSERT(nd.path.dentry); |
95 | ASSERT(nd.path.dentry->d_inode); | |
96 | inode = igrab(nd.path.dentry->d_inode); | |
1d957f9b | 97 | path_put(&nd.path); |
1da177e4 LT |
98 | break; |
99 | } | |
100 | ||
101 | case XFS_IOC_FD_TO_HANDLE: { | |
102 | struct file *file; | |
103 | ||
104 | file = fget(hreq.fd); | |
105 | if (!file) | |
106 | return -EBADF; | |
107 | ||
e678fb0d JJS |
108 | ASSERT(file->f_path.dentry); |
109 | ASSERT(file->f_path.dentry->d_inode); | |
110 | inode = igrab(file->f_path.dentry->d_inode); | |
1da177e4 LT |
111 | fput(file); |
112 | break; | |
113 | } | |
114 | ||
115 | default: | |
116 | ASSERT(0); | |
117 | return -XFS_ERROR(EINVAL); | |
118 | } | |
119 | ||
120 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
121 | /* we're not in XFS anymore, Toto */ | |
122 | iput(inode); | |
123 | return -XFS_ERROR(EINVAL); | |
124 | } | |
125 | ||
0432dab2 CH |
126 | switch (inode->i_mode & S_IFMT) { |
127 | case S_IFREG: | |
128 | case S_IFDIR: | |
129 | case S_IFLNK: | |
130 | break; | |
131 | default: | |
1da177e4 LT |
132 | iput(inode); |
133 | return -XFS_ERROR(EBADF); | |
134 | } | |
135 | ||
136 | /* now we can grab the fsid */ | |
0ce4cfd4 | 137 | memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid, |
2f6f7b3d | 138 | sizeof(xfs_fsid_t)); |
1da177e4 LT |
139 | hsize = sizeof(xfs_fsid_t); |
140 | ||
141 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
6e7f75ea | 142 | xfs_inode_t *ip = XFS_I(inode); |
1da177e4 LT |
143 | int lock_mode; |
144 | ||
145 | /* need to get access to the xfs_inode to read the generation */ | |
1da177e4 LT |
146 | lock_mode = xfs_ilock_map_shared(ip); |
147 | ||
148 | /* fill in fid section of handle from inode */ | |
c6143911 CH |
149 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
150 | sizeof(handle.ha_fid.fid_len); | |
151 | handle.ha_fid.fid_pad = 0; | |
152 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
153 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
154 | |
155 | xfs_iunlock_map_shared(ip, lock_mode); | |
156 | ||
157 | hsize = XFS_HSIZE(handle); | |
158 | } | |
159 | ||
160 | /* now copy our handle into the user buffer & write out the size */ | |
161 | if (copy_to_user(hreq.ohandle, &handle, hsize) || | |
162 | copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) { | |
163 | iput(inode); | |
164 | return -XFS_ERROR(EFAULT); | |
165 | } | |
166 | ||
167 | iput(inode); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | ||
172 | /* | |
6e7f75ea CH |
173 | * Convert userspace handle data into inode. |
174 | * | |
175 | * We use the fact that all the fsop_handlereq ioctl calls have a data | |
176 | * structure argument whose first component is always a xfs_fsop_handlereq_t, | |
177 | * so we can pass that sub structure into this handy, shared routine. | |
1da177e4 | 178 | * |
6e7f75ea | 179 | * If no error, caller must always iput the returned inode. |
1da177e4 LT |
180 | */ |
181 | STATIC int | |
182 | xfs_vget_fsop_handlereq( | |
183 | xfs_mount_t *mp, | |
184 | struct inode *parinode, /* parent inode pointer */ | |
185 | xfs_fsop_handlereq_t *hreq, | |
1da177e4 LT |
186 | struct inode **inode) |
187 | { | |
188 | void __user *hanp; | |
189 | size_t hlen; | |
190 | xfs_fid_t *xfid; | |
191 | xfs_handle_t *handlep; | |
192 | xfs_handle_t handle; | |
193 | xfs_inode_t *ip; | |
1da177e4 LT |
194 | xfs_ino_t ino; |
195 | __u32 igen; | |
196 | int error; | |
197 | ||
198 | /* | |
199 | * Only allow handle opens under a directory. | |
200 | */ | |
201 | if (!S_ISDIR(parinode->i_mode)) | |
202 | return XFS_ERROR(ENOTDIR); | |
203 | ||
204 | hanp = hreq->ihandle; | |
205 | hlen = hreq->ihandlen; | |
206 | handlep = &handle; | |
207 | ||
208 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
209 | return XFS_ERROR(EINVAL); | |
210 | if (copy_from_user(handlep, hanp, hlen)) | |
211 | return XFS_ERROR(EFAULT); | |
212 | if (hlen < sizeof(*handlep)) | |
213 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
214 | if (hlen > sizeof(handlep->ha_fsid)) { | |
c6143911 CH |
215 | if (handlep->ha_fid.fid_len != |
216 | (hlen - sizeof(handlep->ha_fsid) - | |
217 | sizeof(handlep->ha_fid.fid_len)) || | |
218 | handlep->ha_fid.fid_pad) | |
1da177e4 LT |
219 | return XFS_ERROR(EINVAL); |
220 | } | |
221 | ||
222 | /* | |
223 | * Crack the handle, obtain the inode # & generation # | |
224 | */ | |
225 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
c6143911 CH |
226 | if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) { |
227 | ino = xfid->fid_ino; | |
228 | igen = xfid->fid_gen; | |
1da177e4 LT |
229 | } else { |
230 | return XFS_ERROR(EINVAL); | |
231 | } | |
232 | ||
233 | /* | |
6e7f75ea | 234 | * Get the XFS inode, building a Linux inode to go with it. |
1da177e4 LT |
235 | */ |
236 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
237 | if (error) | |
238 | return error; | |
239 | if (ip == NULL) | |
240 | return XFS_ERROR(EIO); | |
241 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
242 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
243 | return XFS_ERROR(ENOENT); | |
244 | } | |
245 | ||
1da177e4 LT |
246 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
247 | ||
6e7f75ea | 248 | *inode = XFS_ITOV(ip); |
1da177e4 LT |
249 | return 0; |
250 | } | |
251 | ||
252 | STATIC int | |
253 | xfs_open_by_handle( | |
254 | xfs_mount_t *mp, | |
255 | void __user *arg, | |
256 | struct file *parfilp, | |
257 | struct inode *parinode) | |
258 | { | |
259 | int error; | |
260 | int new_fd; | |
261 | int permflag; | |
262 | struct file *filp; | |
263 | struct inode *inode; | |
264 | struct dentry *dentry; | |
1da177e4 LT |
265 | xfs_fsop_handlereq_t hreq; |
266 | ||
267 | if (!capable(CAP_SYS_ADMIN)) | |
268 | return -XFS_ERROR(EPERM); | |
269 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
270 | return -XFS_ERROR(EFAULT); | |
271 | ||
6e7f75ea | 272 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &inode); |
1da177e4 LT |
273 | if (error) |
274 | return -error; | |
275 | ||
276 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
277 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
278 | iput(inode); | |
279 | return -XFS_ERROR(EINVAL); | |
280 | } | |
281 | ||
282 | #if BITS_PER_LONG != 32 | |
283 | hreq.oflags |= O_LARGEFILE; | |
284 | #endif | |
285 | /* Put open permission in namei format. */ | |
286 | permflag = hreq.oflags; | |
287 | if ((permflag+1) & O_ACCMODE) | |
288 | permflag++; | |
289 | if (permflag & O_TRUNC) | |
290 | permflag |= 2; | |
291 | ||
292 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
293 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
294 | iput(inode); | |
295 | return -XFS_ERROR(EPERM); | |
296 | } | |
297 | ||
298 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
299 | iput(inode); | |
300 | return -XFS_ERROR(EACCES); | |
301 | } | |
302 | ||
303 | /* Can't write directories. */ | |
304 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
305 | iput(inode); | |
306 | return -XFS_ERROR(EISDIR); | |
307 | } | |
308 | ||
309 | if ((new_fd = get_unused_fd()) < 0) { | |
310 | iput(inode); | |
311 | return new_fd; | |
312 | } | |
313 | ||
314 | dentry = d_alloc_anon(inode); | |
315 | if (dentry == NULL) { | |
316 | iput(inode); | |
317 | put_unused_fd(new_fd); | |
318 | return -XFS_ERROR(ENOMEM); | |
319 | } | |
320 | ||
321 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
e678fb0d | 322 | mntget(parfilp->f_path.mnt); |
1da177e4 LT |
323 | |
324 | /* Create file pointer. */ | |
e678fb0d | 325 | filp = dentry_open(dentry, parfilp->f_path.mnt, hreq.oflags); |
1da177e4 LT |
326 | if (IS_ERR(filp)) { |
327 | put_unused_fd(new_fd); | |
328 | return -XFS_ERROR(-PTR_ERR(filp)); | |
329 | } | |
2e2e7bb1 VA |
330 | if (inode->i_mode & S_IFREG) { |
331 | /* invisible operation should not change atime */ | |
332 | filp->f_flags |= O_NOATIME; | |
3562fd45 | 333 | filp->f_op = &xfs_invis_file_operations; |
2e2e7bb1 | 334 | } |
1da177e4 LT |
335 | |
336 | fd_install(new_fd, filp); | |
337 | return new_fd; | |
338 | } | |
339 | ||
804c83c3 CH |
340 | /* |
341 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
342 | * unused first argument. | |
343 | */ | |
344 | STATIC int | |
345 | do_readlink( | |
346 | char __user *buffer, | |
347 | int buflen, | |
348 | const char *link) | |
349 | { | |
350 | int len; | |
351 | ||
352 | len = PTR_ERR(link); | |
353 | if (IS_ERR(link)) | |
354 | goto out; | |
355 | ||
356 | len = strlen(link); | |
357 | if (len > (unsigned) buflen) | |
358 | len = buflen; | |
359 | if (copy_to_user(buffer, link, len)) | |
360 | len = -EFAULT; | |
361 | out: | |
362 | return len; | |
363 | } | |
364 | ||
365 | ||
1da177e4 LT |
366 | STATIC int |
367 | xfs_readlink_by_handle( | |
368 | xfs_mount_t *mp, | |
369 | void __user *arg, | |
1da177e4 LT |
370 | struct inode *parinode) |
371 | { | |
1da177e4 LT |
372 | struct inode *inode; |
373 | xfs_fsop_handlereq_t hreq; | |
1da177e4 | 374 | __u32 olen; |
804c83c3 CH |
375 | void *link; |
376 | int error; | |
1da177e4 LT |
377 | |
378 | if (!capable(CAP_SYS_ADMIN)) | |
379 | return -XFS_ERROR(EPERM); | |
380 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
381 | return -XFS_ERROR(EFAULT); | |
382 | ||
6e7f75ea | 383 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &inode); |
1da177e4 LT |
384 | if (error) |
385 | return -error; | |
386 | ||
387 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 388 | if (!S_ISLNK(inode->i_mode)) { |
804c83c3 CH |
389 | error = -XFS_ERROR(EINVAL); |
390 | goto out_iput; | |
1da177e4 LT |
391 | } |
392 | ||
393 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
804c83c3 CH |
394 | error = -XFS_ERROR(EFAULT); |
395 | goto out_iput; | |
1da177e4 | 396 | } |
1da177e4 | 397 | |
804c83c3 CH |
398 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
399 | if (!link) | |
400 | goto out_iput; | |
1da177e4 | 401 | |
739bfb2a | 402 | error = -xfs_readlink(XFS_I(inode), link); |
67fcaa73 | 403 | if (error) |
804c83c3 CH |
404 | goto out_kfree; |
405 | error = do_readlink(hreq.ohandle, olen, link); | |
406 | if (error) | |
407 | goto out_kfree; | |
67fcaa73 | 408 | |
804c83c3 CH |
409 | out_kfree: |
410 | kfree(link); | |
411 | out_iput: | |
412 | iput(inode); | |
413 | return error; | |
1da177e4 LT |
414 | } |
415 | ||
416 | STATIC int | |
417 | xfs_fssetdm_by_handle( | |
418 | xfs_mount_t *mp, | |
419 | void __user *arg, | |
1da177e4 LT |
420 | struct inode *parinode) |
421 | { | |
422 | int error; | |
423 | struct fsdmidata fsd; | |
424 | xfs_fsop_setdm_handlereq_t dmhreq; | |
425 | struct inode *inode; | |
1da177e4 LT |
426 | |
427 | if (!capable(CAP_MKNOD)) | |
428 | return -XFS_ERROR(EPERM); | |
429 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
430 | return -XFS_ERROR(EFAULT); | |
431 | ||
6e7f75ea | 432 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &inode); |
1da177e4 LT |
433 | if (error) |
434 | return -error; | |
435 | ||
436 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
6e7f75ea CH |
437 | error = -XFS_ERROR(EPERM); |
438 | goto out; | |
1da177e4 LT |
439 | } |
440 | ||
441 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
442 | error = -XFS_ERROR(EFAULT); |
443 | goto out; | |
1da177e4 LT |
444 | } |
445 | ||
6e7f75ea CH |
446 | error = -xfs_set_dmattrs(XFS_I(inode), fsd.fsd_dmevmask, |
447 | fsd.fsd_dmstate); | |
1da177e4 | 448 | |
6e7f75ea CH |
449 | out: |
450 | iput(inode); | |
451 | return error; | |
1da177e4 LT |
452 | } |
453 | ||
454 | STATIC int | |
455 | xfs_attrlist_by_handle( | |
456 | xfs_mount_t *mp, | |
457 | void __user *arg, | |
1da177e4 LT |
458 | struct inode *parinode) |
459 | { | |
460 | int error; | |
461 | attrlist_cursor_kern_t *cursor; | |
462 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
463 | struct inode *inode; | |
1da177e4 LT |
464 | char *kbuf; |
465 | ||
466 | if (!capable(CAP_SYS_ADMIN)) | |
467 | return -XFS_ERROR(EPERM); | |
468 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
469 | return -XFS_ERROR(EFAULT); | |
470 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
471 | return -XFS_ERROR(EINVAL); | |
472 | ||
6e7f75ea | 473 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, &inode); |
1da177e4 LT |
474 | if (error) |
475 | goto out; | |
476 | ||
477 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
478 | if (!kbuf) | |
479 | goto out_vn_rele; | |
480 | ||
481 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
739bfb2a CH |
482 | error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen, |
483 | al_hreq.flags, cursor); | |
1da177e4 LT |
484 | if (error) |
485 | goto out_kfree; | |
486 | ||
487 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
488 | error = -EFAULT; | |
489 | ||
490 | out_kfree: | |
491 | kfree(kbuf); | |
492 | out_vn_rele: | |
6e7f75ea | 493 | iput(inode); |
1da177e4 LT |
494 | out: |
495 | return -error; | |
496 | } | |
497 | ||
498 | STATIC int | |
499 | xfs_attrmulti_attr_get( | |
739bfb2a | 500 | struct inode *inode, |
1da177e4 LT |
501 | char *name, |
502 | char __user *ubuf, | |
503 | __uint32_t *len, | |
504 | __uint32_t flags) | |
505 | { | |
506 | char *kbuf; | |
507 | int error = EFAULT; | |
508 | ||
509 | if (*len > XATTR_SIZE_MAX) | |
510 | return EINVAL; | |
511 | kbuf = kmalloc(*len, GFP_KERNEL); | |
512 | if (!kbuf) | |
513 | return ENOMEM; | |
514 | ||
a8272ce0 | 515 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags, NULL); |
1da177e4 LT |
516 | if (error) |
517 | goto out_kfree; | |
518 | ||
519 | if (copy_to_user(ubuf, kbuf, *len)) | |
520 | error = EFAULT; | |
521 | ||
522 | out_kfree: | |
523 | kfree(kbuf); | |
524 | return error; | |
525 | } | |
526 | ||
527 | STATIC int | |
528 | xfs_attrmulti_attr_set( | |
739bfb2a | 529 | struct inode *inode, |
1da177e4 LT |
530 | char *name, |
531 | const char __user *ubuf, | |
532 | __uint32_t len, | |
533 | __uint32_t flags) | |
534 | { | |
535 | char *kbuf; | |
536 | int error = EFAULT; | |
537 | ||
739bfb2a | 538 | if (IS_RDONLY(inode)) |
3542c6e1 | 539 | return -EROFS; |
739bfb2a | 540 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
541 | return EPERM; |
542 | if (len > XATTR_SIZE_MAX) | |
543 | return EINVAL; | |
544 | ||
545 | kbuf = kmalloc(len, GFP_KERNEL); | |
546 | if (!kbuf) | |
547 | return ENOMEM; | |
548 | ||
549 | if (copy_from_user(kbuf, ubuf, len)) | |
550 | goto out_kfree; | |
551 | ||
739bfb2a | 552 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
553 | |
554 | out_kfree: | |
555 | kfree(kbuf); | |
556 | return error; | |
557 | } | |
558 | ||
559 | STATIC int | |
560 | xfs_attrmulti_attr_remove( | |
739bfb2a | 561 | struct inode *inode, |
1da177e4 LT |
562 | char *name, |
563 | __uint32_t flags) | |
564 | { | |
739bfb2a | 565 | if (IS_RDONLY(inode)) |
3542c6e1 | 566 | return -EROFS; |
739bfb2a | 567 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 568 | return EPERM; |
739bfb2a | 569 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
570 | } |
571 | ||
572 | STATIC int | |
573 | xfs_attrmulti_by_handle( | |
574 | xfs_mount_t *mp, | |
575 | void __user *arg, | |
1da177e4 LT |
576 | struct inode *parinode) |
577 | { | |
578 | int error; | |
579 | xfs_attr_multiop_t *ops; | |
580 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
581 | struct inode *inode; | |
1da177e4 LT |
582 | unsigned int i, size; |
583 | char *attr_name; | |
584 | ||
585 | if (!capable(CAP_SYS_ADMIN)) | |
586 | return -XFS_ERROR(EPERM); | |
587 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
588 | return -XFS_ERROR(EFAULT); | |
589 | ||
6e7f75ea | 590 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &inode); |
1da177e4 LT |
591 | if (error) |
592 | goto out; | |
593 | ||
594 | error = E2BIG; | |
595 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
596 | if (!size || size > 16 * PAGE_SIZE) | |
597 | goto out_vn_rele; | |
598 | ||
599 | error = ENOMEM; | |
600 | ops = kmalloc(size, GFP_KERNEL); | |
601 | if (!ops) | |
602 | goto out_vn_rele; | |
603 | ||
604 | error = EFAULT; | |
605 | if (copy_from_user(ops, am_hreq.ops, size)) | |
606 | goto out_kfree_ops; | |
607 | ||
608 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
609 | if (!attr_name) | |
610 | goto out_kfree_ops; | |
611 | ||
612 | ||
613 | error = 0; | |
614 | for (i = 0; i < am_hreq.opcount; i++) { | |
615 | ops[i].am_error = strncpy_from_user(attr_name, | |
616 | ops[i].am_attrname, MAXNAMELEN); | |
617 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
618 | error = -ERANGE; | |
619 | if (ops[i].am_error < 0) | |
620 | break; | |
621 | ||
622 | switch (ops[i].am_opcode) { | |
623 | case ATTR_OP_GET: | |
739bfb2a | 624 | ops[i].am_error = xfs_attrmulti_attr_get(inode, |
1da177e4 LT |
625 | attr_name, ops[i].am_attrvalue, |
626 | &ops[i].am_length, ops[i].am_flags); | |
627 | break; | |
628 | case ATTR_OP_SET: | |
739bfb2a | 629 | ops[i].am_error = xfs_attrmulti_attr_set(inode, |
1da177e4 LT |
630 | attr_name, ops[i].am_attrvalue, |
631 | ops[i].am_length, ops[i].am_flags); | |
632 | break; | |
633 | case ATTR_OP_REMOVE: | |
739bfb2a | 634 | ops[i].am_error = xfs_attrmulti_attr_remove(inode, |
1da177e4 LT |
635 | attr_name, ops[i].am_flags); |
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 | ||
1da177e4 LT |
654 | STATIC int |
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, | |
661 | void __user *arg) | |
662 | { | |
663 | xfs_flock64_t bf; | |
664 | int attr_flags = 0; | |
665 | int error; | |
666 | ||
f37ea149 | 667 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
668 | return -XFS_ERROR(EPERM); |
669 | ||
ad4a8ac4 | 670 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
671 | return -XFS_ERROR(EBADF); |
672 | ||
f37ea149 | 673 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
674 | return -XFS_ERROR(EINVAL); |
675 | ||
676 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
677 | return -XFS_ERROR(EFAULT); | |
678 | ||
679 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
680 | attr_flags |= ATTR_NONBLOCK; | |
681 | if (ioflags & IO_INVIS) | |
682 | attr_flags |= ATTR_DMI; | |
683 | ||
993386c1 | 684 | error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos, |
1da177e4 LT |
685 | NULL, attr_flags); |
686 | return -error; | |
687 | } | |
688 | ||
689 | STATIC int | |
690 | xfs_ioc_bulkstat( | |
691 | xfs_mount_t *mp, | |
692 | unsigned int cmd, | |
693 | void __user *arg) | |
694 | { | |
695 | xfs_fsop_bulkreq_t bulkreq; | |
696 | int count; /* # of records returned */ | |
697 | xfs_ino_t inlast; /* last inode number */ | |
698 | int done; | |
699 | int error; | |
700 | ||
701 | /* done = 1 if there are more stats to get and if bulkstat */ | |
702 | /* should be called again (unused here, but used in dmapi) */ | |
703 | ||
704 | if (!capable(CAP_SYS_ADMIN)) | |
705 | return -EPERM; | |
706 | ||
707 | if (XFS_FORCED_SHUTDOWN(mp)) | |
708 | return -XFS_ERROR(EIO); | |
709 | ||
710 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
711 | return -XFS_ERROR(EFAULT); | |
712 | ||
713 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
714 | return -XFS_ERROR(EFAULT); | |
715 | ||
716 | if ((count = bulkreq.icount) <= 0) | |
717 | return -XFS_ERROR(EINVAL); | |
718 | ||
cd57e594 LM |
719 | if (bulkreq.ubuffer == NULL) |
720 | return -XFS_ERROR(EINVAL); | |
721 | ||
1da177e4 LT |
722 | if (cmd == XFS_IOC_FSINUMBERS) |
723 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 724 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
725 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
726 | error = xfs_bulkstat_single(mp, &inlast, | |
727 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
728 | else /* XFS_IOC_FSBULKSTAT */ |
729 | error = xfs_bulkstat(mp, &inlast, &count, | |
730 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
731 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
732 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
733 | |
734 | if (error) | |
735 | return -error; | |
736 | ||
737 | if (bulkreq.ocount != NULL) { | |
738 | if (copy_to_user(bulkreq.lastip, &inlast, | |
739 | sizeof(xfs_ino_t))) | |
740 | return -XFS_ERROR(EFAULT); | |
741 | ||
742 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
743 | return -XFS_ERROR(EFAULT); | |
744 | } | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | STATIC int | |
750 | xfs_ioc_fsgeometry_v1( | |
751 | xfs_mount_t *mp, | |
752 | void __user *arg) | |
753 | { | |
754 | xfs_fsop_geom_v1_t fsgeo; | |
755 | int error; | |
756 | ||
757 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
758 | if (error) | |
759 | return -error; | |
760 | ||
761 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
762 | return -XFS_ERROR(EFAULT); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | STATIC int | |
767 | xfs_ioc_fsgeometry( | |
768 | xfs_mount_t *mp, | |
769 | void __user *arg) | |
770 | { | |
771 | xfs_fsop_geom_t fsgeo; | |
772 | int error; | |
773 | ||
774 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
775 | if (error) | |
776 | return -error; | |
777 | ||
778 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
779 | return -XFS_ERROR(EFAULT); | |
780 | return 0; | |
781 | } | |
782 | ||
783 | /* | |
784 | * Linux extended inode flags interface. | |
785 | */ | |
1da177e4 LT |
786 | |
787 | STATIC unsigned int | |
788 | xfs_merge_ioc_xflags( | |
789 | unsigned int flags, | |
790 | unsigned int start) | |
791 | { | |
792 | unsigned int xflags = start; | |
793 | ||
39058a0e | 794 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
795 | xflags |= XFS_XFLAG_IMMUTABLE; |
796 | else | |
797 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 798 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
799 | xflags |= XFS_XFLAG_APPEND; |
800 | else | |
801 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 802 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
803 | xflags |= XFS_XFLAG_SYNC; |
804 | else | |
805 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 806 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
807 | xflags |= XFS_XFLAG_NOATIME; |
808 | else | |
809 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 810 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
811 | xflags |= XFS_XFLAG_NODUMP; |
812 | else | |
813 | xflags &= ~XFS_XFLAG_NODUMP; | |
814 | ||
815 | return xflags; | |
816 | } | |
817 | ||
818 | STATIC unsigned int | |
819 | xfs_di2lxflags( | |
820 | __uint16_t di_flags) | |
821 | { | |
822 | unsigned int flags = 0; | |
823 | ||
824 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 825 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 826 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 827 | flags |= FS_APPEND_FL; |
1da177e4 | 828 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 829 | flags |= FS_SYNC_FL; |
1da177e4 | 830 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 831 | flags |= FS_NOATIME_FL; |
1da177e4 | 832 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 833 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
834 | return flags; |
835 | } | |
836 | ||
c83bfab1 CH |
837 | STATIC int |
838 | xfs_ioc_fsgetxattr( | |
839 | xfs_inode_t *ip, | |
840 | int attr, | |
841 | void __user *arg) | |
842 | { | |
843 | struct fsxattr fa; | |
844 | ||
845 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
846 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
847 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
848 | fa.fsx_projid = ip->i_d.di_projid; | |
849 | ||
850 | if (attr) { | |
851 | if (ip->i_afp) { | |
852 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
853 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
854 | sizeof(xfs_bmbt_rec_t); | |
855 | else | |
856 | fa.fsx_nextents = ip->i_d.di_anextents; | |
857 | } else | |
858 | fa.fsx_nextents = 0; | |
859 | } else { | |
860 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
861 | fa.fsx_nextents = ip->i_df.if_bytes / | |
862 | sizeof(xfs_bmbt_rec_t); | |
863 | else | |
864 | fa.fsx_nextents = ip->i_d.di_nextents; | |
865 | } | |
866 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
867 | ||
868 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
869 | return -EFAULT; | |
870 | return 0; | |
871 | } | |
872 | ||
1da177e4 | 873 | STATIC int |
df26cfe8 | 874 | xfs_ioc_fssetxattr( |
1da177e4 LT |
875 | xfs_inode_t *ip, |
876 | struct file *filp, | |
1da177e4 LT |
877 | void __user *arg) |
878 | { | |
879 | struct fsxattr fa; | |
8285fb58 | 880 | struct bhv_vattr *vattr; |
df26cfe8 | 881 | int error; |
1da177e4 | 882 | int attr_flags; |
df26cfe8 LM |
883 | |
884 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
885 | return -EFAULT; | |
1da177e4 | 886 | |
220b5284 NS |
887 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
888 | if (unlikely(!vattr)) | |
889 | return -ENOMEM; | |
890 | ||
df26cfe8 LM |
891 | attr_flags = 0; |
892 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
893 | attr_flags |= ATTR_NONBLOCK; | |
1da177e4 | 894 | |
df26cfe8 LM |
895 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
896 | vattr->va_xflags = fa.fsx_xflags; | |
897 | vattr->va_extsize = fa.fsx_extsize; | |
898 | vattr->va_projid = fa.fsx_projid; | |
1da177e4 | 899 | |
df26cfe8 LM |
900 | error = -xfs_setattr(ip, vattr, attr_flags, NULL); |
901 | if (!error) | |
902 | vn_revalidate(XFS_ITOV(ip)); /* update flags */ | |
903 | kfree(vattr); | |
904 | return 0; | |
905 | } | |
1da177e4 | 906 | |
df26cfe8 LM |
907 | STATIC int |
908 | xfs_ioc_getxflags( | |
909 | xfs_inode_t *ip, | |
910 | void __user *arg) | |
911 | { | |
912 | unsigned int flags; | |
1da177e4 | 913 | |
df26cfe8 LM |
914 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
915 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
916 | return -EFAULT; | |
917 | return 0; | |
918 | } | |
1da177e4 | 919 | |
df26cfe8 LM |
920 | STATIC int |
921 | xfs_ioc_setxflags( | |
922 | xfs_inode_t *ip, | |
923 | struct file *filp, | |
924 | void __user *arg) | |
925 | { | |
926 | struct bhv_vattr *vattr; | |
927 | unsigned int flags; | |
928 | int attr_flags; | |
929 | int error; | |
1da177e4 | 930 | |
df26cfe8 LM |
931 | if (copy_from_user(&flags, arg, sizeof(flags))) |
932 | return -EFAULT; | |
1da177e4 | 933 | |
df26cfe8 LM |
934 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
935 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
936 | FS_SYNC_FL)) | |
937 | return -EOPNOTSUPP; | |
1da177e4 | 938 | |
df26cfe8 LM |
939 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
940 | if (unlikely(!vattr)) | |
941 | return -ENOMEM; | |
1da177e4 | 942 | |
df26cfe8 LM |
943 | attr_flags = 0; |
944 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
945 | attr_flags |= ATTR_NONBLOCK; | |
1da177e4 | 946 | |
df26cfe8 LM |
947 | vattr->va_mask = XFS_AT_XFLAGS; |
948 | vattr->va_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
220b5284 | 949 | |
df26cfe8 LM |
950 | error = -xfs_setattr(ip, vattr, attr_flags, NULL); |
951 | if (likely(!error)) | |
952 | vn_revalidate(XFS_ITOV(ip)); /* update flags */ | |
220b5284 NS |
953 | kfree(vattr); |
954 | return error; | |
1da177e4 LT |
955 | } |
956 | ||
957 | STATIC int | |
958 | xfs_ioc_getbmap( | |
993386c1 | 959 | struct xfs_inode *ip, |
1da177e4 LT |
960 | int ioflags, |
961 | unsigned int cmd, | |
962 | void __user *arg) | |
963 | { | |
964 | struct getbmap bm; | |
965 | int iflags; | |
966 | int error; | |
967 | ||
968 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
969 | return -XFS_ERROR(EFAULT); | |
970 | ||
971 | if (bm.bmv_count < 2) | |
972 | return -XFS_ERROR(EINVAL); | |
973 | ||
974 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
975 | if (ioflags & IO_INVIS) | |
976 | iflags |= BMV_IF_NO_DMAPI_READ; | |
977 | ||
993386c1 | 978 | error = xfs_getbmap(ip, &bm, (struct getbmap __user *)arg+1, iflags); |
1da177e4 LT |
979 | if (error) |
980 | return -error; | |
981 | ||
982 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
983 | return -XFS_ERROR(EFAULT); | |
984 | return 0; | |
985 | } | |
986 | ||
987 | STATIC int | |
988 | xfs_ioc_getbmapx( | |
993386c1 | 989 | struct xfs_inode *ip, |
1da177e4 LT |
990 | void __user *arg) |
991 | { | |
992 | struct getbmapx bmx; | |
993 | struct getbmap bm; | |
994 | int iflags; | |
995 | int error; | |
996 | ||
997 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
998 | return -XFS_ERROR(EFAULT); | |
999 | ||
1000 | if (bmx.bmv_count < 2) | |
1001 | return -XFS_ERROR(EINVAL); | |
1002 | ||
1003 | /* | |
1004 | * Map input getbmapx structure to a getbmap | |
1005 | * structure for xfs_getbmap. | |
1006 | */ | |
1007 | GETBMAP_CONVERT(bmx, bm); | |
1008 | ||
1009 | iflags = bmx.bmv_iflags; | |
1010 | ||
1011 | if (iflags & (~BMV_IF_VALID)) | |
1012 | return -XFS_ERROR(EINVAL); | |
1013 | ||
1014 | iflags |= BMV_IF_EXTENDED; | |
1015 | ||
993386c1 | 1016 | error = xfs_getbmap(ip, &bm, (struct getbmapx __user *)arg+1, iflags); |
1da177e4 LT |
1017 | if (error) |
1018 | return -error; | |
1019 | ||
1020 | GETBMAP_CONVERT(bm, bmx); | |
1021 | ||
1022 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1023 | return -XFS_ERROR(EFAULT); | |
1024 | ||
1025 | return 0; | |
1026 | } | |
df26cfe8 LM |
1027 | |
1028 | int | |
1029 | xfs_ioctl( | |
1030 | xfs_inode_t *ip, | |
1031 | struct file *filp, | |
1032 | int ioflags, | |
1033 | unsigned int cmd, | |
1034 | void __user *arg) | |
1035 | { | |
1036 | struct inode *inode = filp->f_path.dentry->d_inode; | |
1037 | xfs_mount_t *mp = ip->i_mount; | |
1038 | int error; | |
1039 | ||
1040 | xfs_itrace_entry(XFS_I(inode)); | |
1041 | switch (cmd) { | |
1042 | ||
1043 | case XFS_IOC_ALLOCSP: | |
1044 | case XFS_IOC_FREESP: | |
1045 | case XFS_IOC_RESVSP: | |
1046 | case XFS_IOC_UNRESVSP: | |
1047 | case XFS_IOC_ALLOCSP64: | |
1048 | case XFS_IOC_FREESP64: | |
1049 | case XFS_IOC_RESVSP64: | |
1050 | case XFS_IOC_UNRESVSP64: | |
1051 | /* | |
1052 | * Only allow the sys admin to reserve space unless | |
1053 | * unwritten extents are enabled. | |
1054 | */ | |
1055 | if (!xfs_sb_version_hasextflgbit(&mp->m_sb) && | |
1056 | !capable(CAP_SYS_ADMIN)) | |
1057 | return -EPERM; | |
1058 | ||
1059 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, arg); | |
1060 | ||
1061 | case XFS_IOC_DIOINFO: { | |
1062 | struct dioattr da; | |
1063 | xfs_buftarg_t *target = | |
1064 | XFS_IS_REALTIME_INODE(ip) ? | |
1065 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1066 | ||
1067 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1068 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1069 | ||
1070 | if (copy_to_user(arg, &da, sizeof(da))) | |
1071 | return -XFS_ERROR(EFAULT); | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1076 | case XFS_IOC_FSBULKSTAT: | |
1077 | case XFS_IOC_FSINUMBERS: | |
1078 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1079 | ||
1080 | case XFS_IOC_FSGEOMETRY_V1: | |
1081 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1082 | ||
1083 | case XFS_IOC_FSGEOMETRY: | |
1084 | return xfs_ioc_fsgeometry(mp, arg); | |
1085 | ||
1086 | case XFS_IOC_GETVERSION: | |
1087 | return put_user(inode->i_generation, (int __user *)arg); | |
1088 | ||
1089 | case XFS_IOC_FSGETXATTR: | |
1090 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1091 | case XFS_IOC_FSGETXATTRA: | |
1092 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
df26cfe8 | 1093 | case XFS_IOC_GETXFLAGS: |
df26cfe8 | 1094 | case XFS_IOC_SETXFLAGS: |
3b2816be LM |
1095 | case XFS_IOC_FSSETXATTR: |
1096 | return xfs_ioc_xattr(ip, filp, cmd, arg); | |
df26cfe8 LM |
1097 | |
1098 | case XFS_IOC_FSSETDM: { | |
1099 | struct fsdmidata dmi; | |
1100 | ||
1101 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1102 | return -XFS_ERROR(EFAULT); | |
1103 | ||
1104 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1105 | dmi.fsd_dmstate); | |
1106 | return -error; | |
1107 | } | |
1108 | ||
1109 | case XFS_IOC_GETBMAP: | |
1110 | case XFS_IOC_GETBMAPA: | |
1111 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1112 | ||
1113 | case XFS_IOC_GETBMAPX: | |
1114 | return xfs_ioc_getbmapx(ip, arg); | |
1115 | ||
1116 | case XFS_IOC_FD_TO_HANDLE: | |
1117 | case XFS_IOC_PATH_TO_HANDLE: | |
1118 | case XFS_IOC_PATH_TO_FSHANDLE: | |
1119 | return xfs_find_handle(cmd, arg); | |
1120 | ||
1121 | case XFS_IOC_OPEN_BY_HANDLE: | |
1122 | return xfs_open_by_handle(mp, arg, filp, inode); | |
1123 | ||
1124 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
1125 | return xfs_fssetdm_by_handle(mp, arg, inode); | |
1126 | ||
1127 | case XFS_IOC_READLINK_BY_HANDLE: | |
1128 | return xfs_readlink_by_handle(mp, arg, inode); | |
1129 | ||
1130 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
1131 | return xfs_attrlist_by_handle(mp, arg, inode); | |
1132 | ||
1133 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
1134 | return xfs_attrmulti_by_handle(mp, arg, inode); | |
1135 | ||
1136 | case XFS_IOC_SWAPEXT: { | |
1137 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
1138 | return -error; | |
1139 | } | |
1140 | ||
1141 | case XFS_IOC_FSCOUNTS: { | |
1142 | xfs_fsop_counts_t out; | |
1143 | ||
1144 | error = xfs_fs_counts(mp, &out); | |
1145 | if (error) | |
1146 | return -error; | |
1147 | ||
1148 | if (copy_to_user(arg, &out, sizeof(out))) | |
1149 | return -XFS_ERROR(EFAULT); | |
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | case XFS_IOC_SET_RESBLKS: { | |
1154 | xfs_fsop_resblks_t inout; | |
1155 | __uint64_t in; | |
1156 | ||
1157 | if (!capable(CAP_SYS_ADMIN)) | |
1158 | return -EPERM; | |
1159 | ||
1160 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1161 | return -XFS_ERROR(EFAULT); | |
1162 | ||
1163 | /* input parameter is passed in resblks field of structure */ | |
1164 | in = inout.resblks; | |
1165 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1166 | if (error) | |
1167 | return -error; | |
1168 | ||
1169 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1170 | return -XFS_ERROR(EFAULT); | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | case XFS_IOC_GET_RESBLKS: { | |
1175 | xfs_fsop_resblks_t out; | |
1176 | ||
1177 | if (!capable(CAP_SYS_ADMIN)) | |
1178 | return -EPERM; | |
1179 | ||
1180 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1181 | if (error) | |
1182 | return -error; | |
1183 | ||
1184 | if (copy_to_user(arg, &out, sizeof(out))) | |
1185 | return -XFS_ERROR(EFAULT); | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | case XFS_IOC_FSGROWFSDATA: { | |
1191 | xfs_growfs_data_t in; | |
1192 | ||
1193 | if (!capable(CAP_SYS_ADMIN)) | |
1194 | return -EPERM; | |
1195 | ||
1196 | if (copy_from_user(&in, arg, sizeof(in))) | |
1197 | return -XFS_ERROR(EFAULT); | |
1198 | ||
1199 | error = xfs_growfs_data(mp, &in); | |
1200 | return -error; | |
1201 | } | |
1202 | ||
1203 | case XFS_IOC_FSGROWFSLOG: { | |
1204 | xfs_growfs_log_t in; | |
1205 | ||
1206 | if (!capable(CAP_SYS_ADMIN)) | |
1207 | return -EPERM; | |
1208 | ||
1209 | if (copy_from_user(&in, arg, sizeof(in))) | |
1210 | return -XFS_ERROR(EFAULT); | |
1211 | ||
1212 | error = xfs_growfs_log(mp, &in); | |
1213 | return -error; | |
1214 | } | |
1215 | ||
1216 | case XFS_IOC_FSGROWFSRT: { | |
1217 | xfs_growfs_rt_t in; | |
1218 | ||
1219 | if (!capable(CAP_SYS_ADMIN)) | |
1220 | return -EPERM; | |
1221 | ||
1222 | if (copy_from_user(&in, arg, sizeof(in))) | |
1223 | return -XFS_ERROR(EFAULT); | |
1224 | ||
1225 | error = xfs_growfs_rt(mp, &in); | |
1226 | return -error; | |
1227 | } | |
1228 | ||
1229 | case XFS_IOC_FREEZE: | |
1230 | if (!capable(CAP_SYS_ADMIN)) | |
1231 | return -EPERM; | |
1232 | ||
1233 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
1234 | freeze_bdev(inode->i_sb->s_bdev); | |
1235 | return 0; | |
1236 | ||
1237 | case XFS_IOC_THAW: | |
1238 | if (!capable(CAP_SYS_ADMIN)) | |
1239 | return -EPERM; | |
1240 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
1241 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
1242 | return 0; | |
1243 | ||
1244 | case XFS_IOC_GOINGDOWN: { | |
1245 | __uint32_t in; | |
1246 | ||
1247 | if (!capable(CAP_SYS_ADMIN)) | |
1248 | return -EPERM; | |
1249 | ||
1250 | if (get_user(in, (__uint32_t __user *)arg)) | |
1251 | return -XFS_ERROR(EFAULT); | |
1252 | ||
1253 | error = xfs_fs_goingdown(mp, in); | |
1254 | return -error; | |
1255 | } | |
1256 | ||
1257 | case XFS_IOC_ERROR_INJECTION: { | |
1258 | xfs_error_injection_t in; | |
1259 | ||
1260 | if (!capable(CAP_SYS_ADMIN)) | |
1261 | return -EPERM; | |
1262 | ||
1263 | if (copy_from_user(&in, arg, sizeof(in))) | |
1264 | return -XFS_ERROR(EFAULT); | |
1265 | ||
1266 | error = xfs_errortag_add(in.errtag, mp); | |
1267 | return -error; | |
1268 | } | |
1269 | ||
1270 | case XFS_IOC_ERROR_CLEARALL: | |
1271 | if (!capable(CAP_SYS_ADMIN)) | |
1272 | return -EPERM; | |
1273 | ||
1274 | error = xfs_errortag_clearall(mp, 1); | |
1275 | return -error; | |
1276 | ||
1277 | default: | |
1278 | return -ENOTTY; | |
1279 | } | |
1280 | } |