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_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
539 | return EPERM; |
540 | if (len > XATTR_SIZE_MAX) | |
541 | return EINVAL; | |
542 | ||
543 | kbuf = kmalloc(len, GFP_KERNEL); | |
544 | if (!kbuf) | |
545 | return ENOMEM; | |
546 | ||
547 | if (copy_from_user(kbuf, ubuf, len)) | |
548 | goto out_kfree; | |
549 | ||
739bfb2a | 550 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
551 | |
552 | out_kfree: | |
553 | kfree(kbuf); | |
554 | return error; | |
555 | } | |
556 | ||
557 | STATIC int | |
558 | xfs_attrmulti_attr_remove( | |
739bfb2a | 559 | struct inode *inode, |
1da177e4 LT |
560 | char *name, |
561 | __uint32_t flags) | |
562 | { | |
739bfb2a | 563 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 564 | return EPERM; |
739bfb2a | 565 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
566 | } |
567 | ||
568 | STATIC int | |
569 | xfs_attrmulti_by_handle( | |
570 | xfs_mount_t *mp, | |
571 | void __user *arg, | |
42a74f20 | 572 | struct file *parfilp, |
1da177e4 LT |
573 | struct inode *parinode) |
574 | { | |
575 | int error; | |
576 | xfs_attr_multiop_t *ops; | |
577 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
578 | struct inode *inode; | |
1da177e4 LT |
579 | unsigned int i, size; |
580 | char *attr_name; | |
581 | ||
582 | if (!capable(CAP_SYS_ADMIN)) | |
583 | return -XFS_ERROR(EPERM); | |
584 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
585 | return -XFS_ERROR(EFAULT); | |
586 | ||
6e7f75ea | 587 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &inode); |
1da177e4 LT |
588 | if (error) |
589 | goto out; | |
590 | ||
591 | error = E2BIG; | |
592 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
593 | if (!size || size > 16 * PAGE_SIZE) | |
594 | goto out_vn_rele; | |
595 | ||
596 | error = ENOMEM; | |
597 | ops = kmalloc(size, GFP_KERNEL); | |
598 | if (!ops) | |
599 | goto out_vn_rele; | |
600 | ||
601 | error = EFAULT; | |
602 | if (copy_from_user(ops, am_hreq.ops, size)) | |
603 | goto out_kfree_ops; | |
604 | ||
605 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
606 | if (!attr_name) | |
607 | goto out_kfree_ops; | |
608 | ||
609 | ||
610 | error = 0; | |
611 | for (i = 0; i < am_hreq.opcount; i++) { | |
612 | ops[i].am_error = strncpy_from_user(attr_name, | |
613 | ops[i].am_attrname, MAXNAMELEN); | |
614 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
615 | error = -ERANGE; | |
616 | if (ops[i].am_error < 0) | |
617 | break; | |
618 | ||
619 | switch (ops[i].am_opcode) { | |
620 | case ATTR_OP_GET: | |
739bfb2a | 621 | ops[i].am_error = xfs_attrmulti_attr_get(inode, |
1da177e4 LT |
622 | attr_name, ops[i].am_attrvalue, |
623 | &ops[i].am_length, ops[i].am_flags); | |
624 | break; | |
625 | case ATTR_OP_SET: | |
42a74f20 DH |
626 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
627 | if (ops[i].am_error) | |
628 | break; | |
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); | |
42a74f20 | 632 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
633 | break; |
634 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
635 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
636 | if (ops[i].am_error) | |
637 | break; | |
739bfb2a | 638 | ops[i].am_error = xfs_attrmulti_attr_remove(inode, |
1da177e4 | 639 | attr_name, ops[i].am_flags); |
42a74f20 | 640 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
641 | break; |
642 | default: | |
643 | ops[i].am_error = EINVAL; | |
644 | } | |
645 | } | |
646 | ||
647 | if (copy_to_user(am_hreq.ops, ops, size)) | |
648 | error = XFS_ERROR(EFAULT); | |
649 | ||
650 | kfree(attr_name); | |
651 | out_kfree_ops: | |
652 | kfree(ops); | |
653 | out_vn_rele: | |
6e7f75ea | 654 | iput(inode); |
1da177e4 LT |
655 | out: |
656 | return -error; | |
657 | } | |
658 | ||
1da177e4 LT |
659 | STATIC int |
660 | xfs_ioc_space( | |
993386c1 | 661 | struct xfs_inode *ip, |
f37ea149 | 662 | struct inode *inode, |
1da177e4 LT |
663 | struct file *filp, |
664 | int ioflags, | |
665 | unsigned int cmd, | |
666 | void __user *arg) | |
667 | { | |
668 | xfs_flock64_t bf; | |
669 | int attr_flags = 0; | |
670 | int error; | |
671 | ||
f37ea149 | 672 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
673 | return -XFS_ERROR(EPERM); |
674 | ||
ad4a8ac4 | 675 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
676 | return -XFS_ERROR(EBADF); |
677 | ||
f37ea149 | 678 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
679 | return -XFS_ERROR(EINVAL); |
680 | ||
681 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
682 | return -XFS_ERROR(EFAULT); | |
683 | ||
684 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
685 | attr_flags |= ATTR_NONBLOCK; | |
686 | if (ioflags & IO_INVIS) | |
687 | attr_flags |= ATTR_DMI; | |
688 | ||
993386c1 | 689 | error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos, |
1da177e4 LT |
690 | NULL, attr_flags); |
691 | return -error; | |
692 | } | |
693 | ||
694 | STATIC int | |
695 | xfs_ioc_bulkstat( | |
696 | xfs_mount_t *mp, | |
697 | unsigned int cmd, | |
698 | void __user *arg) | |
699 | { | |
700 | xfs_fsop_bulkreq_t bulkreq; | |
701 | int count; /* # of records returned */ | |
702 | xfs_ino_t inlast; /* last inode number */ | |
703 | int done; | |
704 | int error; | |
705 | ||
706 | /* done = 1 if there are more stats to get and if bulkstat */ | |
707 | /* should be called again (unused here, but used in dmapi) */ | |
708 | ||
709 | if (!capable(CAP_SYS_ADMIN)) | |
710 | return -EPERM; | |
711 | ||
712 | if (XFS_FORCED_SHUTDOWN(mp)) | |
713 | return -XFS_ERROR(EIO); | |
714 | ||
715 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
716 | return -XFS_ERROR(EFAULT); | |
717 | ||
718 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
719 | return -XFS_ERROR(EFAULT); | |
720 | ||
721 | if ((count = bulkreq.icount) <= 0) | |
722 | return -XFS_ERROR(EINVAL); | |
723 | ||
cd57e594 LM |
724 | if (bulkreq.ubuffer == NULL) |
725 | return -XFS_ERROR(EINVAL); | |
726 | ||
1da177e4 LT |
727 | if (cmd == XFS_IOC_FSINUMBERS) |
728 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 729 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
730 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
731 | error = xfs_bulkstat_single(mp, &inlast, | |
732 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
733 | else /* XFS_IOC_FSBULKSTAT */ |
734 | error = xfs_bulkstat(mp, &inlast, &count, | |
735 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
736 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
737 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
738 | |
739 | if (error) | |
740 | return -error; | |
741 | ||
742 | if (bulkreq.ocount != NULL) { | |
743 | if (copy_to_user(bulkreq.lastip, &inlast, | |
744 | sizeof(xfs_ino_t))) | |
745 | return -XFS_ERROR(EFAULT); | |
746 | ||
747 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
748 | return -XFS_ERROR(EFAULT); | |
749 | } | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
754 | STATIC int | |
755 | xfs_ioc_fsgeometry_v1( | |
756 | xfs_mount_t *mp, | |
757 | void __user *arg) | |
758 | { | |
759 | xfs_fsop_geom_v1_t fsgeo; | |
760 | int error; | |
761 | ||
762 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
763 | if (error) | |
764 | return -error; | |
765 | ||
766 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
767 | return -XFS_ERROR(EFAULT); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | STATIC int | |
772 | xfs_ioc_fsgeometry( | |
773 | xfs_mount_t *mp, | |
774 | void __user *arg) | |
775 | { | |
776 | xfs_fsop_geom_t fsgeo; | |
777 | int error; | |
778 | ||
779 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
780 | if (error) | |
781 | return -error; | |
782 | ||
783 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
784 | return -XFS_ERROR(EFAULT); | |
785 | return 0; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Linux extended inode flags interface. | |
790 | */ | |
1da177e4 LT |
791 | |
792 | STATIC unsigned int | |
793 | xfs_merge_ioc_xflags( | |
794 | unsigned int flags, | |
795 | unsigned int start) | |
796 | { | |
797 | unsigned int xflags = start; | |
798 | ||
39058a0e | 799 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
800 | xflags |= XFS_XFLAG_IMMUTABLE; |
801 | else | |
802 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 803 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
804 | xflags |= XFS_XFLAG_APPEND; |
805 | else | |
806 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 807 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
808 | xflags |= XFS_XFLAG_SYNC; |
809 | else | |
810 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 811 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
812 | xflags |= XFS_XFLAG_NOATIME; |
813 | else | |
814 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 815 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
816 | xflags |= XFS_XFLAG_NODUMP; |
817 | else | |
818 | xflags &= ~XFS_XFLAG_NODUMP; | |
819 | ||
820 | return xflags; | |
821 | } | |
822 | ||
823 | STATIC unsigned int | |
824 | xfs_di2lxflags( | |
825 | __uint16_t di_flags) | |
826 | { | |
827 | unsigned int flags = 0; | |
828 | ||
829 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 830 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 831 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 832 | flags |= FS_APPEND_FL; |
1da177e4 | 833 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 834 | flags |= FS_SYNC_FL; |
1da177e4 | 835 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 836 | flags |= FS_NOATIME_FL; |
1da177e4 | 837 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 838 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
839 | return flags; |
840 | } | |
841 | ||
c83bfab1 CH |
842 | STATIC int |
843 | xfs_ioc_fsgetxattr( | |
844 | xfs_inode_t *ip, | |
845 | int attr, | |
846 | void __user *arg) | |
847 | { | |
848 | struct fsxattr fa; | |
849 | ||
850 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
851 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
852 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
853 | fa.fsx_projid = ip->i_d.di_projid; | |
854 | ||
855 | if (attr) { | |
856 | if (ip->i_afp) { | |
857 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
858 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
859 | sizeof(xfs_bmbt_rec_t); | |
860 | else | |
861 | fa.fsx_nextents = ip->i_d.di_anextents; | |
862 | } else | |
863 | fa.fsx_nextents = 0; | |
864 | } else { | |
865 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
866 | fa.fsx_nextents = ip->i_df.if_bytes / | |
867 | sizeof(xfs_bmbt_rec_t); | |
868 | else | |
869 | fa.fsx_nextents = ip->i_d.di_nextents; | |
870 | } | |
871 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
872 | ||
873 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
874 | return -EFAULT; | |
875 | return 0; | |
876 | } | |
877 | ||
1da177e4 | 878 | STATIC int |
df26cfe8 | 879 | xfs_ioc_fssetxattr( |
1da177e4 LT |
880 | xfs_inode_t *ip, |
881 | struct file *filp, | |
1da177e4 LT |
882 | void __user *arg) |
883 | { | |
884 | struct fsxattr fa; | |
8285fb58 | 885 | struct bhv_vattr *vattr; |
df26cfe8 | 886 | int error; |
1da177e4 | 887 | int attr_flags; |
df26cfe8 LM |
888 | |
889 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
890 | return -EFAULT; | |
1da177e4 | 891 | |
220b5284 NS |
892 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
893 | if (unlikely(!vattr)) | |
894 | return -ENOMEM; | |
895 | ||
df26cfe8 LM |
896 | attr_flags = 0; |
897 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
898 | attr_flags |= ATTR_NONBLOCK; | |
1da177e4 | 899 | |
df26cfe8 LM |
900 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
901 | vattr->va_xflags = fa.fsx_xflags; | |
902 | vattr->va_extsize = fa.fsx_extsize; | |
903 | vattr->va_projid = fa.fsx_projid; | |
1da177e4 | 904 | |
df26cfe8 LM |
905 | error = -xfs_setattr(ip, vattr, attr_flags, NULL); |
906 | if (!error) | |
907 | vn_revalidate(XFS_ITOV(ip)); /* update flags */ | |
908 | kfree(vattr); | |
909 | return 0; | |
910 | } | |
1da177e4 | 911 | |
df26cfe8 LM |
912 | STATIC int |
913 | xfs_ioc_getxflags( | |
914 | xfs_inode_t *ip, | |
915 | void __user *arg) | |
916 | { | |
917 | unsigned int flags; | |
1da177e4 | 918 | |
df26cfe8 LM |
919 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
920 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
921 | return -EFAULT; | |
922 | return 0; | |
923 | } | |
1da177e4 | 924 | |
df26cfe8 LM |
925 | STATIC int |
926 | xfs_ioc_setxflags( | |
927 | xfs_inode_t *ip, | |
928 | struct file *filp, | |
929 | void __user *arg) | |
930 | { | |
931 | struct bhv_vattr *vattr; | |
932 | unsigned int flags; | |
933 | int attr_flags; | |
934 | int error; | |
1da177e4 | 935 | |
df26cfe8 LM |
936 | if (copy_from_user(&flags, arg, sizeof(flags))) |
937 | return -EFAULT; | |
1da177e4 | 938 | |
df26cfe8 LM |
939 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
940 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
941 | FS_SYNC_FL)) | |
942 | return -EOPNOTSUPP; | |
1da177e4 | 943 | |
df26cfe8 LM |
944 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
945 | if (unlikely(!vattr)) | |
946 | return -ENOMEM; | |
1da177e4 | 947 | |
df26cfe8 LM |
948 | attr_flags = 0; |
949 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
950 | attr_flags |= ATTR_NONBLOCK; | |
1da177e4 | 951 | |
df26cfe8 LM |
952 | vattr->va_mask = XFS_AT_XFLAGS; |
953 | vattr->va_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
220b5284 | 954 | |
df26cfe8 LM |
955 | error = -xfs_setattr(ip, vattr, attr_flags, NULL); |
956 | if (likely(!error)) | |
957 | vn_revalidate(XFS_ITOV(ip)); /* update flags */ | |
220b5284 NS |
958 | kfree(vattr); |
959 | return error; | |
1da177e4 LT |
960 | } |
961 | ||
962 | STATIC int | |
963 | xfs_ioc_getbmap( | |
993386c1 | 964 | struct xfs_inode *ip, |
1da177e4 LT |
965 | int ioflags, |
966 | unsigned int cmd, | |
967 | void __user *arg) | |
968 | { | |
969 | struct getbmap bm; | |
970 | int iflags; | |
971 | int error; | |
972 | ||
973 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
974 | return -XFS_ERROR(EFAULT); | |
975 | ||
976 | if (bm.bmv_count < 2) | |
977 | return -XFS_ERROR(EINVAL); | |
978 | ||
979 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
980 | if (ioflags & IO_INVIS) | |
981 | iflags |= BMV_IF_NO_DMAPI_READ; | |
982 | ||
993386c1 | 983 | error = xfs_getbmap(ip, &bm, (struct getbmap __user *)arg+1, iflags); |
1da177e4 LT |
984 | if (error) |
985 | return -error; | |
986 | ||
987 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
988 | return -XFS_ERROR(EFAULT); | |
989 | return 0; | |
990 | } | |
991 | ||
992 | STATIC int | |
993 | xfs_ioc_getbmapx( | |
993386c1 | 994 | struct xfs_inode *ip, |
1da177e4 LT |
995 | void __user *arg) |
996 | { | |
997 | struct getbmapx bmx; | |
998 | struct getbmap bm; | |
999 | int iflags; | |
1000 | int error; | |
1001 | ||
1002 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1003 | return -XFS_ERROR(EFAULT); | |
1004 | ||
1005 | if (bmx.bmv_count < 2) | |
1006 | return -XFS_ERROR(EINVAL); | |
1007 | ||
1008 | /* | |
1009 | * Map input getbmapx structure to a getbmap | |
1010 | * structure for xfs_getbmap. | |
1011 | */ | |
1012 | GETBMAP_CONVERT(bmx, bm); | |
1013 | ||
1014 | iflags = bmx.bmv_iflags; | |
1015 | ||
1016 | if (iflags & (~BMV_IF_VALID)) | |
1017 | return -XFS_ERROR(EINVAL); | |
1018 | ||
1019 | iflags |= BMV_IF_EXTENDED; | |
1020 | ||
993386c1 | 1021 | error = xfs_getbmap(ip, &bm, (struct getbmapx __user *)arg+1, iflags); |
1da177e4 LT |
1022 | if (error) |
1023 | return -error; | |
1024 | ||
1025 | GETBMAP_CONVERT(bm, bmx); | |
1026 | ||
1027 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1028 | return -XFS_ERROR(EFAULT); | |
1029 | ||
1030 | return 0; | |
1031 | } | |
df26cfe8 LM |
1032 | |
1033 | int | |
1034 | xfs_ioctl( | |
1035 | xfs_inode_t *ip, | |
1036 | struct file *filp, | |
1037 | int ioflags, | |
1038 | unsigned int cmd, | |
1039 | void __user *arg) | |
1040 | { | |
1041 | struct inode *inode = filp->f_path.dentry->d_inode; | |
1042 | xfs_mount_t *mp = ip->i_mount; | |
1043 | int error; | |
1044 | ||
1045 | xfs_itrace_entry(XFS_I(inode)); | |
1046 | switch (cmd) { | |
1047 | ||
1048 | case XFS_IOC_ALLOCSP: | |
1049 | case XFS_IOC_FREESP: | |
1050 | case XFS_IOC_RESVSP: | |
1051 | case XFS_IOC_UNRESVSP: | |
1052 | case XFS_IOC_ALLOCSP64: | |
1053 | case XFS_IOC_FREESP64: | |
1054 | case XFS_IOC_RESVSP64: | |
1055 | case XFS_IOC_UNRESVSP64: | |
1056 | /* | |
1057 | * Only allow the sys admin to reserve space unless | |
1058 | * unwritten extents are enabled. | |
1059 | */ | |
1060 | if (!xfs_sb_version_hasextflgbit(&mp->m_sb) && | |
1061 | !capable(CAP_SYS_ADMIN)) | |
1062 | return -EPERM; | |
1063 | ||
1064 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, arg); | |
1065 | ||
1066 | case XFS_IOC_DIOINFO: { | |
1067 | struct dioattr da; | |
1068 | xfs_buftarg_t *target = | |
1069 | XFS_IS_REALTIME_INODE(ip) ? | |
1070 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1071 | ||
1072 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1073 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1074 | ||
1075 | if (copy_to_user(arg, &da, sizeof(da))) | |
1076 | return -XFS_ERROR(EFAULT); | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1081 | case XFS_IOC_FSBULKSTAT: | |
1082 | case XFS_IOC_FSINUMBERS: | |
1083 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1084 | ||
1085 | case XFS_IOC_FSGEOMETRY_V1: | |
1086 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1087 | ||
1088 | case XFS_IOC_FSGEOMETRY: | |
1089 | return xfs_ioc_fsgeometry(mp, arg); | |
1090 | ||
1091 | case XFS_IOC_GETVERSION: | |
1092 | return put_user(inode->i_generation, (int __user *)arg); | |
1093 | ||
1094 | case XFS_IOC_FSGETXATTR: | |
1095 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1096 | case XFS_IOC_FSGETXATTRA: | |
1097 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1098 | case XFS_IOC_FSSETXATTR: |
1099 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1100 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1101 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1102 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1103 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1104 | |
1105 | case XFS_IOC_FSSETDM: { | |
1106 | struct fsdmidata dmi; | |
1107 | ||
1108 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1109 | return -XFS_ERROR(EFAULT); | |
1110 | ||
1111 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1112 | dmi.fsd_dmstate); | |
1113 | return -error; | |
1114 | } | |
1115 | ||
1116 | case XFS_IOC_GETBMAP: | |
1117 | case XFS_IOC_GETBMAPA: | |
1118 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1119 | ||
1120 | case XFS_IOC_GETBMAPX: | |
1121 | return xfs_ioc_getbmapx(ip, arg); | |
1122 | ||
1123 | case XFS_IOC_FD_TO_HANDLE: | |
1124 | case XFS_IOC_PATH_TO_HANDLE: | |
1125 | case XFS_IOC_PATH_TO_FSHANDLE: | |
1126 | return xfs_find_handle(cmd, arg); | |
1127 | ||
1128 | case XFS_IOC_OPEN_BY_HANDLE: | |
1129 | return xfs_open_by_handle(mp, arg, filp, inode); | |
1130 | ||
1131 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
1132 | return xfs_fssetdm_by_handle(mp, arg, inode); | |
1133 | ||
1134 | case XFS_IOC_READLINK_BY_HANDLE: | |
1135 | return xfs_readlink_by_handle(mp, arg, inode); | |
1136 | ||
1137 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
1138 | return xfs_attrlist_by_handle(mp, arg, inode); | |
1139 | ||
1140 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
42a74f20 | 1141 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); |
df26cfe8 LM |
1142 | |
1143 | case XFS_IOC_SWAPEXT: { | |
1144 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
1145 | return -error; | |
1146 | } | |
1147 | ||
1148 | case XFS_IOC_FSCOUNTS: { | |
1149 | xfs_fsop_counts_t out; | |
1150 | ||
1151 | error = xfs_fs_counts(mp, &out); | |
1152 | if (error) | |
1153 | return -error; | |
1154 | ||
1155 | if (copy_to_user(arg, &out, sizeof(out))) | |
1156 | return -XFS_ERROR(EFAULT); | |
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | case XFS_IOC_SET_RESBLKS: { | |
1161 | xfs_fsop_resblks_t inout; | |
1162 | __uint64_t in; | |
1163 | ||
1164 | if (!capable(CAP_SYS_ADMIN)) | |
1165 | return -EPERM; | |
1166 | ||
1167 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1168 | return -XFS_ERROR(EFAULT); | |
1169 | ||
1170 | /* input parameter is passed in resblks field of structure */ | |
1171 | in = inout.resblks; | |
1172 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1173 | if (error) | |
1174 | return -error; | |
1175 | ||
1176 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1177 | return -XFS_ERROR(EFAULT); | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | case XFS_IOC_GET_RESBLKS: { | |
1182 | xfs_fsop_resblks_t out; | |
1183 | ||
1184 | if (!capable(CAP_SYS_ADMIN)) | |
1185 | return -EPERM; | |
1186 | ||
1187 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1188 | if (error) | |
1189 | return -error; | |
1190 | ||
1191 | if (copy_to_user(arg, &out, sizeof(out))) | |
1192 | return -XFS_ERROR(EFAULT); | |
1193 | ||
1194 | return 0; | |
1195 | } | |
1196 | ||
1197 | case XFS_IOC_FSGROWFSDATA: { | |
1198 | xfs_growfs_data_t in; | |
1199 | ||
1200 | if (!capable(CAP_SYS_ADMIN)) | |
1201 | return -EPERM; | |
1202 | ||
1203 | if (copy_from_user(&in, arg, sizeof(in))) | |
1204 | return -XFS_ERROR(EFAULT); | |
1205 | ||
1206 | error = xfs_growfs_data(mp, &in); | |
1207 | return -error; | |
1208 | } | |
1209 | ||
1210 | case XFS_IOC_FSGROWFSLOG: { | |
1211 | xfs_growfs_log_t in; | |
1212 | ||
1213 | if (!capable(CAP_SYS_ADMIN)) | |
1214 | return -EPERM; | |
1215 | ||
1216 | if (copy_from_user(&in, arg, sizeof(in))) | |
1217 | return -XFS_ERROR(EFAULT); | |
1218 | ||
1219 | error = xfs_growfs_log(mp, &in); | |
1220 | return -error; | |
1221 | } | |
1222 | ||
1223 | case XFS_IOC_FSGROWFSRT: { | |
1224 | xfs_growfs_rt_t in; | |
1225 | ||
1226 | if (!capable(CAP_SYS_ADMIN)) | |
1227 | return -EPERM; | |
1228 | ||
1229 | if (copy_from_user(&in, arg, sizeof(in))) | |
1230 | return -XFS_ERROR(EFAULT); | |
1231 | ||
1232 | error = xfs_growfs_rt(mp, &in); | |
1233 | return -error; | |
1234 | } | |
1235 | ||
1236 | case XFS_IOC_FREEZE: | |
1237 | if (!capable(CAP_SYS_ADMIN)) | |
1238 | return -EPERM; | |
1239 | ||
1240 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
1241 | freeze_bdev(inode->i_sb->s_bdev); | |
1242 | return 0; | |
1243 | ||
1244 | case XFS_IOC_THAW: | |
1245 | if (!capable(CAP_SYS_ADMIN)) | |
1246 | return -EPERM; | |
1247 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
1248 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
1249 | return 0; | |
1250 | ||
1251 | case XFS_IOC_GOINGDOWN: { | |
1252 | __uint32_t in; | |
1253 | ||
1254 | if (!capable(CAP_SYS_ADMIN)) | |
1255 | return -EPERM; | |
1256 | ||
1257 | if (get_user(in, (__uint32_t __user *)arg)) | |
1258 | return -XFS_ERROR(EFAULT); | |
1259 | ||
1260 | error = xfs_fs_goingdown(mp, in); | |
1261 | return -error; | |
1262 | } | |
1263 | ||
1264 | case XFS_IOC_ERROR_INJECTION: { | |
1265 | xfs_error_injection_t in; | |
1266 | ||
1267 | if (!capable(CAP_SYS_ADMIN)) | |
1268 | return -EPERM; | |
1269 | ||
1270 | if (copy_from_user(&in, arg, sizeof(in))) | |
1271 | return -XFS_ERROR(EFAULT); | |
1272 | ||
1273 | error = xfs_errortag_add(in.errtag, mp); | |
1274 | return -error; | |
1275 | } | |
1276 | ||
1277 | case XFS_IOC_ERROR_CLEARALL: | |
1278 | if (!capable(CAP_SYS_ADMIN)) | |
1279 | return -EPERM; | |
1280 | ||
1281 | error = xfs_errortag_clearall(mp, 1); | |
1282 | return -error; | |
1283 | ||
1284 | default: | |
1285 | return -ENOTTY; | |
1286 | } | |
1287 | } |