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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" |
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: { | |
2d8f3038 AV |
87 | struct path path; |
88 | int error = user_lpath((const char __user *)hreq.path, &path); | |
1da177e4 LT |
89 | if (error) |
90 | return error; | |
91 | ||
2d8f3038 AV |
92 | ASSERT(path.dentry); |
93 | ASSERT(path.dentry->d_inode); | |
94 | inode = igrab(path.dentry->d_inode); | |
95 | path_put(&path); | |
1da177e4 LT |
96 | break; |
97 | } | |
98 | ||
99 | case XFS_IOC_FD_TO_HANDLE: { | |
100 | struct file *file; | |
101 | ||
102 | file = fget(hreq.fd); | |
103 | if (!file) | |
104 | return -EBADF; | |
105 | ||
e678fb0d JJS |
106 | ASSERT(file->f_path.dentry); |
107 | ASSERT(file->f_path.dentry->d_inode); | |
108 | inode = igrab(file->f_path.dentry->d_inode); | |
1da177e4 LT |
109 | fput(file); |
110 | break; | |
111 | } | |
112 | ||
113 | default: | |
114 | ASSERT(0); | |
115 | return -XFS_ERROR(EINVAL); | |
116 | } | |
117 | ||
118 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
119 | /* we're not in XFS anymore, Toto */ | |
120 | iput(inode); | |
121 | return -XFS_ERROR(EINVAL); | |
122 | } | |
123 | ||
0432dab2 CH |
124 | switch (inode->i_mode & S_IFMT) { |
125 | case S_IFREG: | |
126 | case S_IFDIR: | |
127 | case S_IFLNK: | |
128 | break; | |
129 | default: | |
1da177e4 LT |
130 | iput(inode); |
131 | return -XFS_ERROR(EBADF); | |
132 | } | |
133 | ||
134 | /* now we can grab the fsid */ | |
0ce4cfd4 | 135 | memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid, |
2f6f7b3d | 136 | sizeof(xfs_fsid_t)); |
1da177e4 LT |
137 | hsize = sizeof(xfs_fsid_t); |
138 | ||
139 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
6e7f75ea | 140 | xfs_inode_t *ip = XFS_I(inode); |
1da177e4 LT |
141 | int lock_mode; |
142 | ||
143 | /* need to get access to the xfs_inode to read the generation */ | |
1da177e4 LT |
144 | lock_mode = xfs_ilock_map_shared(ip); |
145 | ||
146 | /* fill in fid section of handle from inode */ | |
c6143911 CH |
147 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
148 | sizeof(handle.ha_fid.fid_len); | |
149 | handle.ha_fid.fid_pad = 0; | |
150 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
151 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
152 | |
153 | xfs_iunlock_map_shared(ip, lock_mode); | |
154 | ||
155 | hsize = XFS_HSIZE(handle); | |
156 | } | |
157 | ||
158 | /* now copy our handle into the user buffer & write out the size */ | |
159 | if (copy_to_user(hreq.ohandle, &handle, hsize) || | |
160 | copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) { | |
161 | iput(inode); | |
162 | return -XFS_ERROR(EFAULT); | |
163 | } | |
164 | ||
165 | iput(inode); | |
166 | return 0; | |
167 | } | |
168 | ||
169 | ||
170 | /* | |
6e7f75ea CH |
171 | * Convert userspace handle data into inode. |
172 | * | |
173 | * We use the fact that all the fsop_handlereq ioctl calls have a data | |
174 | * structure argument whose first component is always a xfs_fsop_handlereq_t, | |
175 | * so we can pass that sub structure into this handy, shared routine. | |
1da177e4 | 176 | * |
6e7f75ea | 177 | * If no error, caller must always iput the returned inode. |
1da177e4 LT |
178 | */ |
179 | STATIC int | |
180 | xfs_vget_fsop_handlereq( | |
181 | xfs_mount_t *mp, | |
182 | struct inode *parinode, /* parent inode pointer */ | |
183 | xfs_fsop_handlereq_t *hreq, | |
1da177e4 LT |
184 | struct inode **inode) |
185 | { | |
186 | void __user *hanp; | |
187 | size_t hlen; | |
188 | xfs_fid_t *xfid; | |
189 | xfs_handle_t *handlep; | |
190 | xfs_handle_t handle; | |
191 | xfs_inode_t *ip; | |
1da177e4 LT |
192 | xfs_ino_t ino; |
193 | __u32 igen; | |
194 | int error; | |
195 | ||
196 | /* | |
197 | * Only allow handle opens under a directory. | |
198 | */ | |
199 | if (!S_ISDIR(parinode->i_mode)) | |
200 | return XFS_ERROR(ENOTDIR); | |
201 | ||
202 | hanp = hreq->ihandle; | |
203 | hlen = hreq->ihandlen; | |
204 | handlep = &handle; | |
205 | ||
206 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
207 | return XFS_ERROR(EINVAL); | |
208 | if (copy_from_user(handlep, hanp, hlen)) | |
209 | return XFS_ERROR(EFAULT); | |
210 | if (hlen < sizeof(*handlep)) | |
211 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
212 | if (hlen > sizeof(handlep->ha_fsid)) { | |
c6143911 CH |
213 | if (handlep->ha_fid.fid_len != |
214 | (hlen - sizeof(handlep->ha_fsid) - | |
215 | sizeof(handlep->ha_fid.fid_len)) || | |
216 | handlep->ha_fid.fid_pad) | |
1da177e4 LT |
217 | return XFS_ERROR(EINVAL); |
218 | } | |
219 | ||
220 | /* | |
221 | * Crack the handle, obtain the inode # & generation # | |
222 | */ | |
223 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
c6143911 CH |
224 | if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) { |
225 | ino = xfid->fid_ino; | |
226 | igen = xfid->fid_gen; | |
1da177e4 LT |
227 | } else { |
228 | return XFS_ERROR(EINVAL); | |
229 | } | |
230 | ||
231 | /* | |
6e7f75ea | 232 | * Get the XFS inode, building a Linux inode to go with it. |
1da177e4 LT |
233 | */ |
234 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
235 | if (error) | |
236 | return error; | |
237 | if (ip == NULL) | |
238 | return XFS_ERROR(EIO); | |
6a7f422d | 239 | if (ip->i_d.di_gen != igen) { |
1da177e4 LT |
240 | xfs_iput_new(ip, XFS_ILOCK_SHARED); |
241 | return XFS_ERROR(ENOENT); | |
242 | } | |
243 | ||
1da177e4 LT |
244 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
245 | ||
6e7f75ea | 246 | *inode = XFS_ITOV(ip); |
1da177e4 LT |
247 | return 0; |
248 | } | |
249 | ||
250 | STATIC int | |
251 | xfs_open_by_handle( | |
252 | xfs_mount_t *mp, | |
253 | void __user *arg, | |
254 | struct file *parfilp, | |
255 | struct inode *parinode) | |
256 | { | |
257 | int error; | |
258 | int new_fd; | |
259 | int permflag; | |
260 | struct file *filp; | |
261 | struct inode *inode; | |
262 | struct dentry *dentry; | |
1da177e4 LT |
263 | xfs_fsop_handlereq_t hreq; |
264 | ||
265 | if (!capable(CAP_SYS_ADMIN)) | |
266 | return -XFS_ERROR(EPERM); | |
267 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
268 | return -XFS_ERROR(EFAULT); | |
269 | ||
6e7f75ea | 270 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &inode); |
1da177e4 LT |
271 | if (error) |
272 | return -error; | |
273 | ||
274 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
275 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
276 | iput(inode); | |
277 | return -XFS_ERROR(EINVAL); | |
278 | } | |
279 | ||
280 | #if BITS_PER_LONG != 32 | |
281 | hreq.oflags |= O_LARGEFILE; | |
282 | #endif | |
283 | /* Put open permission in namei format. */ | |
284 | permflag = hreq.oflags; | |
285 | if ((permflag+1) & O_ACCMODE) | |
286 | permflag++; | |
287 | if (permflag & O_TRUNC) | |
288 | permflag |= 2; | |
289 | ||
290 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
291 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
292 | iput(inode); | |
293 | return -XFS_ERROR(EPERM); | |
294 | } | |
295 | ||
296 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
297 | iput(inode); | |
298 | return -XFS_ERROR(EACCES); | |
299 | } | |
300 | ||
301 | /* Can't write directories. */ | |
302 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
303 | iput(inode); | |
304 | return -XFS_ERROR(EISDIR); | |
305 | } | |
306 | ||
307 | if ((new_fd = get_unused_fd()) < 0) { | |
308 | iput(inode); | |
309 | return new_fd; | |
310 | } | |
311 | ||
312 | dentry = d_alloc_anon(inode); | |
313 | if (dentry == NULL) { | |
314 | iput(inode); | |
315 | put_unused_fd(new_fd); | |
316 | return -XFS_ERROR(ENOMEM); | |
317 | } | |
318 | ||
319 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
e678fb0d | 320 | mntget(parfilp->f_path.mnt); |
1da177e4 LT |
321 | |
322 | /* Create file pointer. */ | |
e678fb0d | 323 | filp = dentry_open(dentry, parfilp->f_path.mnt, hreq.oflags); |
1da177e4 LT |
324 | if (IS_ERR(filp)) { |
325 | put_unused_fd(new_fd); | |
326 | return -XFS_ERROR(-PTR_ERR(filp)); | |
327 | } | |
2e2e7bb1 VA |
328 | if (inode->i_mode & S_IFREG) { |
329 | /* invisible operation should not change atime */ | |
330 | filp->f_flags |= O_NOATIME; | |
3562fd45 | 331 | filp->f_op = &xfs_invis_file_operations; |
2e2e7bb1 | 332 | } |
1da177e4 LT |
333 | |
334 | fd_install(new_fd, filp); | |
335 | return new_fd; | |
336 | } | |
337 | ||
804c83c3 CH |
338 | /* |
339 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
340 | * unused first argument. | |
341 | */ | |
342 | STATIC int | |
343 | do_readlink( | |
344 | char __user *buffer, | |
345 | int buflen, | |
346 | const char *link) | |
347 | { | |
348 | int len; | |
349 | ||
350 | len = PTR_ERR(link); | |
351 | if (IS_ERR(link)) | |
352 | goto out; | |
353 | ||
354 | len = strlen(link); | |
355 | if (len > (unsigned) buflen) | |
356 | len = buflen; | |
357 | if (copy_to_user(buffer, link, len)) | |
358 | len = -EFAULT; | |
359 | out: | |
360 | return len; | |
361 | } | |
362 | ||
363 | ||
1da177e4 LT |
364 | STATIC int |
365 | xfs_readlink_by_handle( | |
366 | xfs_mount_t *mp, | |
367 | void __user *arg, | |
1da177e4 LT |
368 | struct inode *parinode) |
369 | { | |
1da177e4 LT |
370 | struct inode *inode; |
371 | xfs_fsop_handlereq_t hreq; | |
1da177e4 | 372 | __u32 olen; |
804c83c3 CH |
373 | void *link; |
374 | int error; | |
1da177e4 LT |
375 | |
376 | if (!capable(CAP_SYS_ADMIN)) | |
377 | return -XFS_ERROR(EPERM); | |
378 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
379 | return -XFS_ERROR(EFAULT); | |
380 | ||
6e7f75ea | 381 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &inode); |
1da177e4 LT |
382 | if (error) |
383 | return -error; | |
384 | ||
385 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 386 | if (!S_ISLNK(inode->i_mode)) { |
804c83c3 CH |
387 | error = -XFS_ERROR(EINVAL); |
388 | goto out_iput; | |
1da177e4 LT |
389 | } |
390 | ||
391 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
804c83c3 CH |
392 | error = -XFS_ERROR(EFAULT); |
393 | goto out_iput; | |
1da177e4 | 394 | } |
1da177e4 | 395 | |
804c83c3 CH |
396 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
397 | if (!link) | |
398 | goto out_iput; | |
1da177e4 | 399 | |
739bfb2a | 400 | error = -xfs_readlink(XFS_I(inode), link); |
67fcaa73 | 401 | if (error) |
804c83c3 CH |
402 | goto out_kfree; |
403 | error = do_readlink(hreq.ohandle, olen, link); | |
404 | if (error) | |
405 | goto out_kfree; | |
67fcaa73 | 406 | |
804c83c3 CH |
407 | out_kfree: |
408 | kfree(link); | |
409 | out_iput: | |
410 | iput(inode); | |
411 | return error; | |
1da177e4 LT |
412 | } |
413 | ||
414 | STATIC int | |
415 | xfs_fssetdm_by_handle( | |
416 | xfs_mount_t *mp, | |
417 | void __user *arg, | |
1da177e4 LT |
418 | struct inode *parinode) |
419 | { | |
420 | int error; | |
421 | struct fsdmidata fsd; | |
422 | xfs_fsop_setdm_handlereq_t dmhreq; | |
423 | struct inode *inode; | |
1da177e4 LT |
424 | |
425 | if (!capable(CAP_MKNOD)) | |
426 | return -XFS_ERROR(EPERM); | |
427 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
428 | return -XFS_ERROR(EFAULT); | |
429 | ||
6e7f75ea | 430 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &inode); |
1da177e4 LT |
431 | if (error) |
432 | return -error; | |
433 | ||
434 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
6e7f75ea CH |
435 | error = -XFS_ERROR(EPERM); |
436 | goto out; | |
1da177e4 LT |
437 | } |
438 | ||
439 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
440 | error = -XFS_ERROR(EFAULT); |
441 | goto out; | |
1da177e4 LT |
442 | } |
443 | ||
6e7f75ea CH |
444 | error = -xfs_set_dmattrs(XFS_I(inode), fsd.fsd_dmevmask, |
445 | fsd.fsd_dmstate); | |
1da177e4 | 446 | |
6e7f75ea CH |
447 | out: |
448 | iput(inode); | |
449 | return error; | |
1da177e4 LT |
450 | } |
451 | ||
452 | STATIC int | |
453 | xfs_attrlist_by_handle( | |
454 | xfs_mount_t *mp, | |
455 | void __user *arg, | |
1da177e4 LT |
456 | struct inode *parinode) |
457 | { | |
458 | int error; | |
459 | attrlist_cursor_kern_t *cursor; | |
460 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
461 | struct inode *inode; | |
1da177e4 LT |
462 | char *kbuf; |
463 | ||
464 | if (!capable(CAP_SYS_ADMIN)) | |
465 | return -XFS_ERROR(EPERM); | |
466 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
467 | return -XFS_ERROR(EFAULT); | |
468 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
469 | return -XFS_ERROR(EINVAL); | |
470 | ||
6e7f75ea | 471 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, &inode); |
1da177e4 LT |
472 | if (error) |
473 | goto out; | |
474 | ||
475 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
476 | if (!kbuf) | |
477 | goto out_vn_rele; | |
478 | ||
479 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
739bfb2a CH |
480 | error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen, |
481 | al_hreq.flags, cursor); | |
1da177e4 LT |
482 | if (error) |
483 | goto out_kfree; | |
484 | ||
485 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
486 | error = -EFAULT; | |
487 | ||
488 | out_kfree: | |
489 | kfree(kbuf); | |
490 | out_vn_rele: | |
6e7f75ea | 491 | iput(inode); |
1da177e4 LT |
492 | out: |
493 | return -error; | |
494 | } | |
495 | ||
496 | STATIC int | |
497 | xfs_attrmulti_attr_get( | |
739bfb2a | 498 | struct inode *inode, |
1da177e4 LT |
499 | char *name, |
500 | char __user *ubuf, | |
501 | __uint32_t *len, | |
502 | __uint32_t flags) | |
503 | { | |
504 | char *kbuf; | |
505 | int error = EFAULT; | |
e8b0ebaa | 506 | |
1da177e4 LT |
507 | if (*len > XATTR_SIZE_MAX) |
508 | return EINVAL; | |
509 | kbuf = kmalloc(*len, GFP_KERNEL); | |
510 | if (!kbuf) | |
511 | return ENOMEM; | |
512 | ||
e8b0ebaa | 513 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
514 | if (error) |
515 | goto out_kfree; | |
516 | ||
517 | if (copy_to_user(ubuf, kbuf, *len)) | |
518 | error = EFAULT; | |
519 | ||
520 | out_kfree: | |
521 | kfree(kbuf); | |
522 | return error; | |
523 | } | |
524 | ||
525 | STATIC int | |
526 | xfs_attrmulti_attr_set( | |
739bfb2a | 527 | struct inode *inode, |
1da177e4 LT |
528 | char *name, |
529 | const char __user *ubuf, | |
530 | __uint32_t len, | |
531 | __uint32_t flags) | |
532 | { | |
533 | char *kbuf; | |
534 | int error = EFAULT; | |
535 | ||
739bfb2a | 536 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
537 | return EPERM; |
538 | if (len > XATTR_SIZE_MAX) | |
539 | return EINVAL; | |
540 | ||
541 | kbuf = kmalloc(len, GFP_KERNEL); | |
542 | if (!kbuf) | |
543 | return ENOMEM; | |
544 | ||
545 | if (copy_from_user(kbuf, ubuf, len)) | |
546 | goto out_kfree; | |
e8b0ebaa | 547 | |
739bfb2a | 548 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
549 | |
550 | out_kfree: | |
551 | kfree(kbuf); | |
552 | return error; | |
553 | } | |
554 | ||
555 | STATIC int | |
556 | xfs_attrmulti_attr_remove( | |
739bfb2a | 557 | struct inode *inode, |
1da177e4 LT |
558 | char *name, |
559 | __uint32_t flags) | |
560 | { | |
739bfb2a | 561 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 562 | return EPERM; |
739bfb2a | 563 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
564 | } |
565 | ||
566 | STATIC int | |
567 | xfs_attrmulti_by_handle( | |
568 | xfs_mount_t *mp, | |
569 | void __user *arg, | |
42a74f20 | 570 | struct file *parfilp, |
1da177e4 LT |
571 | struct inode *parinode) |
572 | { | |
573 | int error; | |
574 | xfs_attr_multiop_t *ops; | |
575 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
576 | struct inode *inode; | |
1da177e4 LT |
577 | unsigned int i, size; |
578 | char *attr_name; | |
579 | ||
580 | if (!capable(CAP_SYS_ADMIN)) | |
581 | return -XFS_ERROR(EPERM); | |
582 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
583 | return -XFS_ERROR(EFAULT); | |
584 | ||
6e7f75ea | 585 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &inode); |
1da177e4 LT |
586 | if (error) |
587 | goto out; | |
588 | ||
589 | error = E2BIG; | |
590 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
591 | if (!size || size > 16 * PAGE_SIZE) | |
592 | goto out_vn_rele; | |
593 | ||
594 | error = ENOMEM; | |
595 | ops = kmalloc(size, GFP_KERNEL); | |
596 | if (!ops) | |
597 | goto out_vn_rele; | |
598 | ||
599 | error = EFAULT; | |
600 | if (copy_from_user(ops, am_hreq.ops, size)) | |
601 | goto out_kfree_ops; | |
602 | ||
603 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
604 | if (!attr_name) | |
605 | goto out_kfree_ops; | |
606 | ||
607 | ||
608 | error = 0; | |
609 | for (i = 0; i < am_hreq.opcount; i++) { | |
610 | ops[i].am_error = strncpy_from_user(attr_name, | |
611 | ops[i].am_attrname, MAXNAMELEN); | |
612 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
613 | error = -ERANGE; | |
614 | if (ops[i].am_error < 0) | |
615 | break; | |
616 | ||
617 | switch (ops[i].am_opcode) { | |
618 | case ATTR_OP_GET: | |
739bfb2a | 619 | ops[i].am_error = xfs_attrmulti_attr_get(inode, |
1da177e4 LT |
620 | attr_name, ops[i].am_attrvalue, |
621 | &ops[i].am_length, ops[i].am_flags); | |
622 | break; | |
623 | case ATTR_OP_SET: | |
42a74f20 DH |
624 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
625 | if (ops[i].am_error) | |
626 | break; | |
739bfb2a | 627 | ops[i].am_error = xfs_attrmulti_attr_set(inode, |
1da177e4 LT |
628 | attr_name, ops[i].am_attrvalue, |
629 | ops[i].am_length, ops[i].am_flags); | |
42a74f20 | 630 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
631 | break; |
632 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
633 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
634 | if (ops[i].am_error) | |
635 | break; | |
739bfb2a | 636 | ops[i].am_error = xfs_attrmulti_attr_remove(inode, |
1da177e4 | 637 | attr_name, ops[i].am_flags); |
42a74f20 | 638 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
639 | break; |
640 | default: | |
641 | ops[i].am_error = EINVAL; | |
642 | } | |
643 | } | |
644 | ||
645 | if (copy_to_user(am_hreq.ops, ops, size)) | |
646 | error = XFS_ERROR(EFAULT); | |
647 | ||
648 | kfree(attr_name); | |
649 | out_kfree_ops: | |
650 | kfree(ops); | |
651 | out_vn_rele: | |
6e7f75ea | 652 | iput(inode); |
1da177e4 LT |
653 | out: |
654 | return -error; | |
655 | } | |
656 | ||
1da177e4 LT |
657 | STATIC int |
658 | xfs_ioc_space( | |
993386c1 | 659 | struct xfs_inode *ip, |
f37ea149 | 660 | struct inode *inode, |
1da177e4 LT |
661 | struct file *filp, |
662 | int ioflags, | |
663 | unsigned int cmd, | |
664 | void __user *arg) | |
665 | { | |
666 | xfs_flock64_t bf; | |
667 | int attr_flags = 0; | |
668 | int error; | |
669 | ||
f37ea149 | 670 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
671 | return -XFS_ERROR(EPERM); |
672 | ||
ad4a8ac4 | 673 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
674 | return -XFS_ERROR(EBADF); |
675 | ||
f37ea149 | 676 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
677 | return -XFS_ERROR(EINVAL); |
678 | ||
679 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
680 | return -XFS_ERROR(EFAULT); | |
681 | ||
682 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
683 | attr_flags |= ATTR_NONBLOCK; | |
684 | if (ioflags & IO_INVIS) | |
685 | attr_flags |= ATTR_DMI; | |
686 | ||
993386c1 | 687 | error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos, |
1da177e4 LT |
688 | NULL, attr_flags); |
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 | ||
1da177e4 | 876 | STATIC int |
df26cfe8 | 877 | xfs_ioc_fssetxattr( |
1da177e4 LT |
878 | xfs_inode_t *ip, |
879 | struct file *filp, | |
1da177e4 LT |
880 | void __user *arg) |
881 | { | |
882 | struct fsxattr fa; | |
8285fb58 | 883 | struct bhv_vattr *vattr; |
df26cfe8 | 884 | int error; |
1da177e4 | 885 | int attr_flags; |
df26cfe8 LM |
886 | |
887 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
888 | return -EFAULT; | |
1da177e4 | 889 | |
220b5284 NS |
890 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
891 | if (unlikely(!vattr)) | |
892 | return -ENOMEM; | |
893 | ||
df26cfe8 LM |
894 | attr_flags = 0; |
895 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
896 | attr_flags |= ATTR_NONBLOCK; | |
1da177e4 | 897 | |
df26cfe8 LM |
898 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
899 | vattr->va_xflags = fa.fsx_xflags; | |
900 | vattr->va_extsize = fa.fsx_extsize; | |
901 | vattr->va_projid = fa.fsx_projid; | |
1da177e4 | 902 | |
df26cfe8 LM |
903 | error = -xfs_setattr(ip, vattr, attr_flags, NULL); |
904 | if (!error) | |
905 | vn_revalidate(XFS_ITOV(ip)); /* update flags */ | |
906 | kfree(vattr); | |
907 | return 0; | |
908 | } | |
1da177e4 | 909 | |
df26cfe8 LM |
910 | STATIC int |
911 | xfs_ioc_getxflags( | |
912 | xfs_inode_t *ip, | |
913 | void __user *arg) | |
914 | { | |
915 | unsigned int flags; | |
1da177e4 | 916 | |
df26cfe8 LM |
917 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
918 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
919 | return -EFAULT; | |
920 | return 0; | |
921 | } | |
1da177e4 | 922 | |
df26cfe8 LM |
923 | STATIC int |
924 | xfs_ioc_setxflags( | |
925 | xfs_inode_t *ip, | |
926 | struct file *filp, | |
927 | void __user *arg) | |
928 | { | |
929 | struct bhv_vattr *vattr; | |
930 | unsigned int flags; | |
931 | int attr_flags; | |
932 | int error; | |
1da177e4 | 933 | |
df26cfe8 LM |
934 | if (copy_from_user(&flags, arg, sizeof(flags))) |
935 | return -EFAULT; | |
1da177e4 | 936 | |
df26cfe8 LM |
937 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
938 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
939 | FS_SYNC_FL)) | |
940 | return -EOPNOTSUPP; | |
1da177e4 | 941 | |
df26cfe8 LM |
942 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
943 | if (unlikely(!vattr)) | |
944 | return -ENOMEM; | |
1da177e4 | 945 | |
df26cfe8 LM |
946 | attr_flags = 0; |
947 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
948 | attr_flags |= ATTR_NONBLOCK; | |
1da177e4 | 949 | |
df26cfe8 LM |
950 | vattr->va_mask = XFS_AT_XFLAGS; |
951 | vattr->va_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
220b5284 | 952 | |
df26cfe8 LM |
953 | error = -xfs_setattr(ip, vattr, attr_flags, NULL); |
954 | if (likely(!error)) | |
955 | vn_revalidate(XFS_ITOV(ip)); /* update flags */ | |
220b5284 NS |
956 | kfree(vattr); |
957 | return error; | |
1da177e4 LT |
958 | } |
959 | ||
960 | STATIC int | |
961 | xfs_ioc_getbmap( | |
993386c1 | 962 | struct xfs_inode *ip, |
1da177e4 LT |
963 | int ioflags, |
964 | unsigned int cmd, | |
965 | void __user *arg) | |
966 | { | |
967 | struct getbmap bm; | |
968 | int iflags; | |
969 | int error; | |
970 | ||
971 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
972 | return -XFS_ERROR(EFAULT); | |
973 | ||
974 | if (bm.bmv_count < 2) | |
975 | return -XFS_ERROR(EINVAL); | |
976 | ||
977 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
978 | if (ioflags & IO_INVIS) | |
979 | iflags |= BMV_IF_NO_DMAPI_READ; | |
980 | ||
993386c1 | 981 | error = xfs_getbmap(ip, &bm, (struct getbmap __user *)arg+1, iflags); |
1da177e4 LT |
982 | if (error) |
983 | return -error; | |
984 | ||
985 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
986 | return -XFS_ERROR(EFAULT); | |
987 | return 0; | |
988 | } | |
989 | ||
990 | STATIC int | |
991 | xfs_ioc_getbmapx( | |
993386c1 | 992 | struct xfs_inode *ip, |
1da177e4 LT |
993 | void __user *arg) |
994 | { | |
995 | struct getbmapx bmx; | |
996 | struct getbmap bm; | |
997 | int iflags; | |
998 | int error; | |
999 | ||
1000 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1001 | return -XFS_ERROR(EFAULT); | |
1002 | ||
1003 | if (bmx.bmv_count < 2) | |
1004 | return -XFS_ERROR(EINVAL); | |
1005 | ||
1006 | /* | |
1007 | * Map input getbmapx structure to a getbmap | |
1008 | * structure for xfs_getbmap. | |
1009 | */ | |
1010 | GETBMAP_CONVERT(bmx, bm); | |
1011 | ||
1012 | iflags = bmx.bmv_iflags; | |
1013 | ||
1014 | if (iflags & (~BMV_IF_VALID)) | |
1015 | return -XFS_ERROR(EINVAL); | |
1016 | ||
1017 | iflags |= BMV_IF_EXTENDED; | |
1018 | ||
993386c1 | 1019 | error = xfs_getbmap(ip, &bm, (struct getbmapx __user *)arg+1, iflags); |
1da177e4 LT |
1020 | if (error) |
1021 | return -error; | |
1022 | ||
1023 | GETBMAP_CONVERT(bm, bmx); | |
1024 | ||
1025 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1026 | return -XFS_ERROR(EFAULT); | |
1027 | ||
1028 | return 0; | |
1029 | } | |
df26cfe8 LM |
1030 | |
1031 | int | |
1032 | xfs_ioctl( | |
1033 | xfs_inode_t *ip, | |
1034 | struct file *filp, | |
1035 | int ioflags, | |
1036 | unsigned int cmd, | |
1037 | void __user *arg) | |
1038 | { | |
1039 | struct inode *inode = filp->f_path.dentry->d_inode; | |
1040 | xfs_mount_t *mp = ip->i_mount; | |
1041 | int error; | |
1042 | ||
1043 | xfs_itrace_entry(XFS_I(inode)); | |
1044 | switch (cmd) { | |
1045 | ||
1046 | case XFS_IOC_ALLOCSP: | |
1047 | case XFS_IOC_FREESP: | |
1048 | case XFS_IOC_RESVSP: | |
1049 | case XFS_IOC_UNRESVSP: | |
1050 | case XFS_IOC_ALLOCSP64: | |
1051 | case XFS_IOC_FREESP64: | |
1052 | case XFS_IOC_RESVSP64: | |
1053 | case XFS_IOC_UNRESVSP64: | |
1054 | /* | |
1055 | * Only allow the sys admin to reserve space unless | |
1056 | * unwritten extents are enabled. | |
1057 | */ | |
1058 | if (!xfs_sb_version_hasextflgbit(&mp->m_sb) && | |
1059 | !capable(CAP_SYS_ADMIN)) | |
1060 | return -EPERM; | |
1061 | ||
1062 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, arg); | |
1063 | ||
1064 | case XFS_IOC_DIOINFO: { | |
1065 | struct dioattr da; | |
1066 | xfs_buftarg_t *target = | |
1067 | XFS_IS_REALTIME_INODE(ip) ? | |
1068 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1069 | ||
1070 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1071 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1072 | ||
1073 | if (copy_to_user(arg, &da, sizeof(da))) | |
1074 | return -XFS_ERROR(EFAULT); | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1079 | case XFS_IOC_FSBULKSTAT: | |
1080 | case XFS_IOC_FSINUMBERS: | |
1081 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1082 | ||
1083 | case XFS_IOC_FSGEOMETRY_V1: | |
1084 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1085 | ||
1086 | case XFS_IOC_FSGEOMETRY: | |
1087 | return xfs_ioc_fsgeometry(mp, arg); | |
1088 | ||
1089 | case XFS_IOC_GETVERSION: | |
1090 | return put_user(inode->i_generation, (int __user *)arg); | |
1091 | ||
1092 | case XFS_IOC_FSGETXATTR: | |
1093 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1094 | case XFS_IOC_FSGETXATTRA: | |
1095 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1096 | case XFS_IOC_FSSETXATTR: |
1097 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1098 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1099 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1100 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1101 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1102 | |
1103 | case XFS_IOC_FSSETDM: { | |
1104 | struct fsdmidata dmi; | |
1105 | ||
1106 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1107 | return -XFS_ERROR(EFAULT); | |
1108 | ||
1109 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1110 | dmi.fsd_dmstate); | |
1111 | return -error; | |
1112 | } | |
1113 | ||
1114 | case XFS_IOC_GETBMAP: | |
1115 | case XFS_IOC_GETBMAPA: | |
1116 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1117 | ||
1118 | case XFS_IOC_GETBMAPX: | |
1119 | return xfs_ioc_getbmapx(ip, arg); | |
1120 | ||
1121 | case XFS_IOC_FD_TO_HANDLE: | |
1122 | case XFS_IOC_PATH_TO_HANDLE: | |
1123 | case XFS_IOC_PATH_TO_FSHANDLE: | |
1124 | return xfs_find_handle(cmd, arg); | |
1125 | ||
1126 | case XFS_IOC_OPEN_BY_HANDLE: | |
1127 | return xfs_open_by_handle(mp, arg, filp, inode); | |
1128 | ||
1129 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
1130 | return xfs_fssetdm_by_handle(mp, arg, inode); | |
1131 | ||
1132 | case XFS_IOC_READLINK_BY_HANDLE: | |
1133 | return xfs_readlink_by_handle(mp, arg, inode); | |
1134 | ||
1135 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
1136 | return xfs_attrlist_by_handle(mp, arg, inode); | |
1137 | ||
1138 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
42a74f20 | 1139 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); |
df26cfe8 LM |
1140 | |
1141 | case XFS_IOC_SWAPEXT: { | |
1142 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
1143 | return -error; | |
1144 | } | |
1145 | ||
1146 | case XFS_IOC_FSCOUNTS: { | |
1147 | xfs_fsop_counts_t out; | |
1148 | ||
1149 | error = xfs_fs_counts(mp, &out); | |
1150 | if (error) | |
1151 | return -error; | |
1152 | ||
1153 | if (copy_to_user(arg, &out, sizeof(out))) | |
1154 | return -XFS_ERROR(EFAULT); | |
1155 | return 0; | |
1156 | } | |
1157 | ||
1158 | case XFS_IOC_SET_RESBLKS: { | |
1159 | xfs_fsop_resblks_t inout; | |
1160 | __uint64_t in; | |
1161 | ||
1162 | if (!capable(CAP_SYS_ADMIN)) | |
1163 | return -EPERM; | |
1164 | ||
1165 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1166 | return -XFS_ERROR(EFAULT); | |
1167 | ||
1168 | /* input parameter is passed in resblks field of structure */ | |
1169 | in = inout.resblks; | |
1170 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1171 | if (error) | |
1172 | return -error; | |
1173 | ||
1174 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1175 | return -XFS_ERROR(EFAULT); | |
1176 | return 0; | |
1177 | } | |
1178 | ||
1179 | case XFS_IOC_GET_RESBLKS: { | |
1180 | xfs_fsop_resblks_t out; | |
1181 | ||
1182 | if (!capable(CAP_SYS_ADMIN)) | |
1183 | return -EPERM; | |
1184 | ||
1185 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1186 | if (error) | |
1187 | return -error; | |
1188 | ||
1189 | if (copy_to_user(arg, &out, sizeof(out))) | |
1190 | return -XFS_ERROR(EFAULT); | |
1191 | ||
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | case XFS_IOC_FSGROWFSDATA: { | |
1196 | xfs_growfs_data_t in; | |
1197 | ||
1198 | if (!capable(CAP_SYS_ADMIN)) | |
1199 | return -EPERM; | |
1200 | ||
1201 | if (copy_from_user(&in, arg, sizeof(in))) | |
1202 | return -XFS_ERROR(EFAULT); | |
1203 | ||
1204 | error = xfs_growfs_data(mp, &in); | |
1205 | return -error; | |
1206 | } | |
1207 | ||
1208 | case XFS_IOC_FSGROWFSLOG: { | |
1209 | xfs_growfs_log_t in; | |
1210 | ||
1211 | if (!capable(CAP_SYS_ADMIN)) | |
1212 | return -EPERM; | |
1213 | ||
1214 | if (copy_from_user(&in, arg, sizeof(in))) | |
1215 | return -XFS_ERROR(EFAULT); | |
1216 | ||
1217 | error = xfs_growfs_log(mp, &in); | |
1218 | return -error; | |
1219 | } | |
1220 | ||
1221 | case XFS_IOC_FSGROWFSRT: { | |
1222 | xfs_growfs_rt_t in; | |
1223 | ||
1224 | if (!capable(CAP_SYS_ADMIN)) | |
1225 | return -EPERM; | |
1226 | ||
1227 | if (copy_from_user(&in, arg, sizeof(in))) | |
1228 | return -XFS_ERROR(EFAULT); | |
1229 | ||
1230 | error = xfs_growfs_rt(mp, &in); | |
1231 | return -error; | |
1232 | } | |
1233 | ||
1234 | case XFS_IOC_FREEZE: | |
1235 | if (!capable(CAP_SYS_ADMIN)) | |
1236 | return -EPERM; | |
1237 | ||
1238 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
1239 | freeze_bdev(inode->i_sb->s_bdev); | |
1240 | return 0; | |
1241 | ||
1242 | case XFS_IOC_THAW: | |
1243 | if (!capable(CAP_SYS_ADMIN)) | |
1244 | return -EPERM; | |
1245 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
1246 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
1247 | return 0; | |
1248 | ||
1249 | case XFS_IOC_GOINGDOWN: { | |
1250 | __uint32_t in; | |
1251 | ||
1252 | if (!capable(CAP_SYS_ADMIN)) | |
1253 | return -EPERM; | |
1254 | ||
1255 | if (get_user(in, (__uint32_t __user *)arg)) | |
1256 | return -XFS_ERROR(EFAULT); | |
1257 | ||
1258 | error = xfs_fs_goingdown(mp, in); | |
1259 | return -error; | |
1260 | } | |
1261 | ||
1262 | case XFS_IOC_ERROR_INJECTION: { | |
1263 | xfs_error_injection_t in; | |
1264 | ||
1265 | if (!capable(CAP_SYS_ADMIN)) | |
1266 | return -EPERM; | |
1267 | ||
1268 | if (copy_from_user(&in, arg, sizeof(in))) | |
1269 | return -XFS_ERROR(EFAULT); | |
1270 | ||
1271 | error = xfs_errortag_add(in.errtag, mp); | |
1272 | return -error; | |
1273 | } | |
1274 | ||
1275 | case XFS_IOC_ERROR_CLEARALL: | |
1276 | if (!capable(CAP_SYS_ADMIN)) | |
1277 | return -EPERM; | |
1278 | ||
1279 | error = xfs_errortag_clearall(mp, 1); | |
1280 | return -error; | |
1281 | ||
1282 | default: | |
1283 | return -ENOTTY; | |
1284 | } | |
1285 | } |