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; | |
67fcaa73 | 78 | bhv_vnode_t *vp; |
1da177e4 LT |
79 | |
80 | if (copy_from_user(&hreq, arg, sizeof(hreq))) | |
81 | return -XFS_ERROR(EFAULT); | |
82 | ||
83 | memset((char *)&handle, 0, sizeof(handle)); | |
84 | ||
85 | switch (cmd) { | |
86 | case XFS_IOC_PATH_TO_FSHANDLE: | |
87 | case XFS_IOC_PATH_TO_HANDLE: { | |
88 | struct nameidata nd; | |
89 | int error; | |
90 | ||
91 | error = user_path_walk_link((const char __user *)hreq.path, &nd); | |
92 | if (error) | |
93 | return error; | |
94 | ||
95 | ASSERT(nd.dentry); | |
96 | ASSERT(nd.dentry->d_inode); | |
97 | inode = igrab(nd.dentry->d_inode); | |
98 | path_release(&nd); | |
99 | break; | |
100 | } | |
101 | ||
102 | case XFS_IOC_FD_TO_HANDLE: { | |
103 | struct file *file; | |
104 | ||
105 | file = fget(hreq.fd); | |
106 | if (!file) | |
107 | return -EBADF; | |
108 | ||
e678fb0d JJS |
109 | ASSERT(file->f_path.dentry); |
110 | ASSERT(file->f_path.dentry->d_inode); | |
111 | inode = igrab(file->f_path.dentry->d_inode); | |
1da177e4 LT |
112 | fput(file); |
113 | break; | |
114 | } | |
115 | ||
116 | default: | |
117 | ASSERT(0); | |
118 | return -XFS_ERROR(EINVAL); | |
119 | } | |
120 | ||
121 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
122 | /* we're not in XFS anymore, Toto */ | |
123 | iput(inode); | |
124 | return -XFS_ERROR(EINVAL); | |
125 | } | |
126 | ||
0432dab2 CH |
127 | switch (inode->i_mode & S_IFMT) { |
128 | case S_IFREG: | |
129 | case S_IFDIR: | |
130 | case S_IFLNK: | |
131 | break; | |
132 | default: | |
1da177e4 LT |
133 | iput(inode); |
134 | return -XFS_ERROR(EBADF); | |
135 | } | |
136 | ||
0432dab2 | 137 | /* we need the vnode */ |
ec86dc02 | 138 | vp = vn_from_inode(inode); |
0432dab2 | 139 | |
1da177e4 | 140 | /* now we can grab the fsid */ |
0ce4cfd4 | 141 | memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid, |
2f6f7b3d | 142 | sizeof(xfs_fsid_t)); |
1da177e4 LT |
143 | hsize = sizeof(xfs_fsid_t); |
144 | ||
145 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
146 | xfs_inode_t *ip; | |
1da177e4 LT |
147 | int lock_mode; |
148 | ||
149 | /* need to get access to the xfs_inode to read the generation */ | |
75e17b3c | 150 | ip = xfs_vtoi(vp); |
1da177e4 LT |
151 | ASSERT(ip); |
152 | lock_mode = xfs_ilock_map_shared(ip); | |
153 | ||
154 | /* fill in fid section of handle from inode */ | |
c6143911 CH |
155 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
156 | sizeof(handle.ha_fid.fid_len); | |
157 | handle.ha_fid.fid_pad = 0; | |
158 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
159 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
160 | |
161 | xfs_iunlock_map_shared(ip, lock_mode); | |
162 | ||
163 | hsize = XFS_HSIZE(handle); | |
164 | } | |
165 | ||
166 | /* now copy our handle into the user buffer & write out the size */ | |
167 | if (copy_to_user(hreq.ohandle, &handle, hsize) || | |
168 | copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) { | |
169 | iput(inode); | |
170 | return -XFS_ERROR(EFAULT); | |
171 | } | |
172 | ||
173 | iput(inode); | |
174 | return 0; | |
175 | } | |
176 | ||
177 | ||
178 | /* | |
179 | * Convert userspace handle data into vnode (and inode). | |
180 | * We [ab]use the fact that all the fsop_handlereq ioctl calls | |
181 | * have a data structure argument whose first component is always | |
182 | * a xfs_fsop_handlereq_t, so we can cast to and from this type. | |
183 | * This allows us to optimise the copy_from_user calls and gives | |
184 | * a handy, shared routine. | |
185 | * | |
186 | * If no error, caller must always VN_RELE the returned vp. | |
187 | */ | |
188 | STATIC int | |
189 | xfs_vget_fsop_handlereq( | |
190 | xfs_mount_t *mp, | |
191 | struct inode *parinode, /* parent inode pointer */ | |
192 | xfs_fsop_handlereq_t *hreq, | |
67fcaa73 | 193 | bhv_vnode_t **vp, |
1da177e4 LT |
194 | struct inode **inode) |
195 | { | |
196 | void __user *hanp; | |
197 | size_t hlen; | |
198 | xfs_fid_t *xfid; | |
199 | xfs_handle_t *handlep; | |
200 | xfs_handle_t handle; | |
201 | xfs_inode_t *ip; | |
202 | struct inode *inodep; | |
67fcaa73 | 203 | bhv_vnode_t *vpp; |
1da177e4 LT |
204 | xfs_ino_t ino; |
205 | __u32 igen; | |
206 | int error; | |
207 | ||
208 | /* | |
209 | * Only allow handle opens under a directory. | |
210 | */ | |
211 | if (!S_ISDIR(parinode->i_mode)) | |
212 | return XFS_ERROR(ENOTDIR); | |
213 | ||
214 | hanp = hreq->ihandle; | |
215 | hlen = hreq->ihandlen; | |
216 | handlep = &handle; | |
217 | ||
218 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
219 | return XFS_ERROR(EINVAL); | |
220 | if (copy_from_user(handlep, hanp, hlen)) | |
221 | return XFS_ERROR(EFAULT); | |
222 | if (hlen < sizeof(*handlep)) | |
223 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
224 | if (hlen > sizeof(handlep->ha_fsid)) { | |
c6143911 CH |
225 | if (handlep->ha_fid.fid_len != |
226 | (hlen - sizeof(handlep->ha_fsid) - | |
227 | sizeof(handlep->ha_fid.fid_len)) || | |
228 | handlep->ha_fid.fid_pad) | |
1da177e4 LT |
229 | return XFS_ERROR(EINVAL); |
230 | } | |
231 | ||
232 | /* | |
233 | * Crack the handle, obtain the inode # & generation # | |
234 | */ | |
235 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
c6143911 CH |
236 | if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) { |
237 | ino = xfid->fid_ino; | |
238 | igen = xfid->fid_gen; | |
1da177e4 LT |
239 | } else { |
240 | return XFS_ERROR(EINVAL); | |
241 | } | |
242 | ||
243 | /* | |
244 | * Get the XFS inode, building a vnode to go with it. | |
245 | */ | |
246 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
247 | if (error) | |
248 | return error; | |
249 | if (ip == NULL) | |
250 | return XFS_ERROR(EIO); | |
251 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
252 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
253 | return XFS_ERROR(ENOENT); | |
254 | } | |
255 | ||
256 | vpp = XFS_ITOV(ip); | |
ec86dc02 | 257 | inodep = vn_to_inode(vpp); |
1da177e4 LT |
258 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
259 | ||
260 | *vp = vpp; | |
261 | *inode = inodep; | |
262 | return 0; | |
263 | } | |
264 | ||
265 | STATIC int | |
266 | xfs_open_by_handle( | |
267 | xfs_mount_t *mp, | |
268 | void __user *arg, | |
269 | struct file *parfilp, | |
270 | struct inode *parinode) | |
271 | { | |
272 | int error; | |
273 | int new_fd; | |
274 | int permflag; | |
275 | struct file *filp; | |
276 | struct inode *inode; | |
277 | struct dentry *dentry; | |
67fcaa73 | 278 | bhv_vnode_t *vp; |
1da177e4 LT |
279 | xfs_fsop_handlereq_t hreq; |
280 | ||
281 | if (!capable(CAP_SYS_ADMIN)) | |
282 | return -XFS_ERROR(EPERM); | |
283 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
284 | return -XFS_ERROR(EFAULT); | |
285 | ||
286 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
287 | if (error) | |
288 | return -error; | |
289 | ||
290 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
291 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
292 | iput(inode); | |
293 | return -XFS_ERROR(EINVAL); | |
294 | } | |
295 | ||
296 | #if BITS_PER_LONG != 32 | |
297 | hreq.oflags |= O_LARGEFILE; | |
298 | #endif | |
299 | /* Put open permission in namei format. */ | |
300 | permflag = hreq.oflags; | |
301 | if ((permflag+1) & O_ACCMODE) | |
302 | permflag++; | |
303 | if (permflag & O_TRUNC) | |
304 | permflag |= 2; | |
305 | ||
306 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
307 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
308 | iput(inode); | |
309 | return -XFS_ERROR(EPERM); | |
310 | } | |
311 | ||
312 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
313 | iput(inode); | |
314 | return -XFS_ERROR(EACCES); | |
315 | } | |
316 | ||
317 | /* Can't write directories. */ | |
318 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
319 | iput(inode); | |
320 | return -XFS_ERROR(EISDIR); | |
321 | } | |
322 | ||
323 | if ((new_fd = get_unused_fd()) < 0) { | |
324 | iput(inode); | |
325 | return new_fd; | |
326 | } | |
327 | ||
328 | dentry = d_alloc_anon(inode); | |
329 | if (dentry == NULL) { | |
330 | iput(inode); | |
331 | put_unused_fd(new_fd); | |
332 | return -XFS_ERROR(ENOMEM); | |
333 | } | |
334 | ||
335 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
e678fb0d | 336 | mntget(parfilp->f_path.mnt); |
1da177e4 LT |
337 | |
338 | /* Create file pointer. */ | |
e678fb0d | 339 | filp = dentry_open(dentry, parfilp->f_path.mnt, hreq.oflags); |
1da177e4 LT |
340 | if (IS_ERR(filp)) { |
341 | put_unused_fd(new_fd); | |
342 | return -XFS_ERROR(-PTR_ERR(filp)); | |
343 | } | |
2e2e7bb1 VA |
344 | if (inode->i_mode & S_IFREG) { |
345 | /* invisible operation should not change atime */ | |
346 | filp->f_flags |= O_NOATIME; | |
3562fd45 | 347 | filp->f_op = &xfs_invis_file_operations; |
2e2e7bb1 | 348 | } |
1da177e4 LT |
349 | |
350 | fd_install(new_fd, filp); | |
351 | return new_fd; | |
352 | } | |
353 | ||
804c83c3 CH |
354 | /* |
355 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
356 | * unused first argument. | |
357 | */ | |
358 | STATIC int | |
359 | do_readlink( | |
360 | char __user *buffer, | |
361 | int buflen, | |
362 | const char *link) | |
363 | { | |
364 | int len; | |
365 | ||
366 | len = PTR_ERR(link); | |
367 | if (IS_ERR(link)) | |
368 | goto out; | |
369 | ||
370 | len = strlen(link); | |
371 | if (len > (unsigned) buflen) | |
372 | len = buflen; | |
373 | if (copy_to_user(buffer, link, len)) | |
374 | len = -EFAULT; | |
375 | out: | |
376 | return len; | |
377 | } | |
378 | ||
379 | ||
1da177e4 LT |
380 | STATIC int |
381 | xfs_readlink_by_handle( | |
382 | xfs_mount_t *mp, | |
383 | void __user *arg, | |
1da177e4 LT |
384 | struct inode *parinode) |
385 | { | |
1da177e4 LT |
386 | struct inode *inode; |
387 | xfs_fsop_handlereq_t hreq; | |
67fcaa73 | 388 | bhv_vnode_t *vp; |
1da177e4 | 389 | __u32 olen; |
804c83c3 CH |
390 | void *link; |
391 | int error; | |
1da177e4 LT |
392 | |
393 | if (!capable(CAP_SYS_ADMIN)) | |
394 | return -XFS_ERROR(EPERM); | |
395 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
396 | return -XFS_ERROR(EFAULT); | |
397 | ||
398 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
399 | if (error) | |
400 | return -error; | |
401 | ||
402 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 403 | if (!S_ISLNK(inode->i_mode)) { |
804c83c3 CH |
404 | error = -XFS_ERROR(EINVAL); |
405 | goto out_iput; | |
1da177e4 LT |
406 | } |
407 | ||
408 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
804c83c3 CH |
409 | error = -XFS_ERROR(EFAULT); |
410 | goto out_iput; | |
1da177e4 | 411 | } |
1da177e4 | 412 | |
804c83c3 CH |
413 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
414 | if (!link) | |
415 | goto out_iput; | |
1da177e4 | 416 | |
739bfb2a | 417 | error = -xfs_readlink(XFS_I(inode), link); |
67fcaa73 | 418 | if (error) |
804c83c3 CH |
419 | goto out_kfree; |
420 | error = do_readlink(hreq.ohandle, olen, link); | |
421 | if (error) | |
422 | goto out_kfree; | |
67fcaa73 | 423 | |
804c83c3 CH |
424 | out_kfree: |
425 | kfree(link); | |
426 | out_iput: | |
427 | iput(inode); | |
428 | return error; | |
1da177e4 LT |
429 | } |
430 | ||
431 | STATIC int | |
432 | xfs_fssetdm_by_handle( | |
433 | xfs_mount_t *mp, | |
434 | void __user *arg, | |
1da177e4 LT |
435 | struct inode *parinode) |
436 | { | |
437 | int error; | |
438 | struct fsdmidata fsd; | |
439 | xfs_fsop_setdm_handlereq_t dmhreq; | |
440 | struct inode *inode; | |
67fcaa73 | 441 | bhv_vnode_t *vp; |
1da177e4 LT |
442 | |
443 | if (!capable(CAP_MKNOD)) | |
444 | return -XFS_ERROR(EPERM); | |
445 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
446 | return -XFS_ERROR(EFAULT); | |
447 | ||
448 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode); | |
449 | if (error) | |
450 | return -error; | |
451 | ||
452 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
453 | VN_RELE(vp); | |
454 | return -XFS_ERROR(EPERM); | |
455 | } | |
456 | ||
457 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
458 | VN_RELE(vp); | |
459 | return -XFS_ERROR(EFAULT); | |
460 | } | |
461 | ||
993386c1 CH |
462 | error = xfs_set_dmattrs(xfs_vtoi(vp), |
463 | fsd.fsd_dmevmask, fsd.fsd_dmstate); | |
1da177e4 LT |
464 | |
465 | VN_RELE(vp); | |
466 | if (error) | |
467 | return -error; | |
468 | return 0; | |
469 | } | |
470 | ||
471 | STATIC int | |
472 | xfs_attrlist_by_handle( | |
473 | xfs_mount_t *mp, | |
474 | void __user *arg, | |
1da177e4 LT |
475 | struct inode *parinode) |
476 | { | |
477 | int error; | |
478 | attrlist_cursor_kern_t *cursor; | |
479 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
480 | struct inode *inode; | |
67fcaa73 | 481 | bhv_vnode_t *vp; |
1da177e4 LT |
482 | char *kbuf; |
483 | ||
484 | if (!capable(CAP_SYS_ADMIN)) | |
485 | return -XFS_ERROR(EPERM); | |
486 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
487 | return -XFS_ERROR(EFAULT); | |
488 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
489 | return -XFS_ERROR(EINVAL); | |
490 | ||
491 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, | |
492 | &vp, &inode); | |
493 | if (error) | |
494 | goto out; | |
495 | ||
496 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
497 | if (!kbuf) | |
498 | goto out_vn_rele; | |
499 | ||
500 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
739bfb2a CH |
501 | error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen, |
502 | al_hreq.flags, cursor); | |
1da177e4 LT |
503 | if (error) |
504 | goto out_kfree; | |
505 | ||
506 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
507 | error = -EFAULT; | |
508 | ||
509 | out_kfree: | |
510 | kfree(kbuf); | |
511 | out_vn_rele: | |
512 | VN_RELE(vp); | |
513 | out: | |
514 | return -error; | |
515 | } | |
516 | ||
517 | STATIC int | |
518 | xfs_attrmulti_attr_get( | |
739bfb2a | 519 | struct inode *inode, |
1da177e4 LT |
520 | char *name, |
521 | char __user *ubuf, | |
522 | __uint32_t *len, | |
523 | __uint32_t flags) | |
524 | { | |
525 | char *kbuf; | |
526 | int error = EFAULT; | |
527 | ||
528 | if (*len > XATTR_SIZE_MAX) | |
529 | return EINVAL; | |
530 | kbuf = kmalloc(*len, GFP_KERNEL); | |
531 | if (!kbuf) | |
532 | return ENOMEM; | |
533 | ||
739bfb2a | 534 | error = xfs_attr_get(XFS_I(inode), name, kbuf, len, flags, NULL); |
1da177e4 LT |
535 | if (error) |
536 | goto out_kfree; | |
537 | ||
538 | if (copy_to_user(ubuf, kbuf, *len)) | |
539 | error = EFAULT; | |
540 | ||
541 | out_kfree: | |
542 | kfree(kbuf); | |
543 | return error; | |
544 | } | |
545 | ||
546 | STATIC int | |
547 | xfs_attrmulti_attr_set( | |
739bfb2a | 548 | struct inode *inode, |
1da177e4 LT |
549 | char *name, |
550 | const char __user *ubuf, | |
551 | __uint32_t len, | |
552 | __uint32_t flags) | |
553 | { | |
554 | char *kbuf; | |
555 | int error = EFAULT; | |
556 | ||
739bfb2a | 557 | if (IS_RDONLY(inode)) |
3542c6e1 | 558 | return -EROFS; |
739bfb2a | 559 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
560 | return EPERM; |
561 | if (len > XATTR_SIZE_MAX) | |
562 | return EINVAL; | |
563 | ||
564 | kbuf = kmalloc(len, GFP_KERNEL); | |
565 | if (!kbuf) | |
566 | return ENOMEM; | |
567 | ||
568 | if (copy_from_user(kbuf, ubuf, len)) | |
569 | goto out_kfree; | |
570 | ||
739bfb2a | 571 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
572 | |
573 | out_kfree: | |
574 | kfree(kbuf); | |
575 | return error; | |
576 | } | |
577 | ||
578 | STATIC int | |
579 | xfs_attrmulti_attr_remove( | |
739bfb2a | 580 | struct inode *inode, |
1da177e4 LT |
581 | char *name, |
582 | __uint32_t flags) | |
583 | { | |
739bfb2a | 584 | if (IS_RDONLY(inode)) |
3542c6e1 | 585 | return -EROFS; |
739bfb2a | 586 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 587 | return EPERM; |
739bfb2a | 588 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
589 | } |
590 | ||
591 | STATIC int | |
592 | xfs_attrmulti_by_handle( | |
593 | xfs_mount_t *mp, | |
594 | void __user *arg, | |
1da177e4 LT |
595 | struct inode *parinode) |
596 | { | |
597 | int error; | |
598 | xfs_attr_multiop_t *ops; | |
599 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
600 | struct inode *inode; | |
67fcaa73 | 601 | bhv_vnode_t *vp; |
1da177e4 LT |
602 | unsigned int i, size; |
603 | char *attr_name; | |
604 | ||
605 | if (!capable(CAP_SYS_ADMIN)) | |
606 | return -XFS_ERROR(EPERM); | |
607 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
608 | return -XFS_ERROR(EFAULT); | |
609 | ||
610 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode); | |
611 | if (error) | |
612 | goto out; | |
613 | ||
614 | error = E2BIG; | |
615 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
616 | if (!size || size > 16 * PAGE_SIZE) | |
617 | goto out_vn_rele; | |
618 | ||
619 | error = ENOMEM; | |
620 | ops = kmalloc(size, GFP_KERNEL); | |
621 | if (!ops) | |
622 | goto out_vn_rele; | |
623 | ||
624 | error = EFAULT; | |
625 | if (copy_from_user(ops, am_hreq.ops, size)) | |
626 | goto out_kfree_ops; | |
627 | ||
628 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
629 | if (!attr_name) | |
630 | goto out_kfree_ops; | |
631 | ||
632 | ||
633 | error = 0; | |
634 | for (i = 0; i < am_hreq.opcount; i++) { | |
635 | ops[i].am_error = strncpy_from_user(attr_name, | |
636 | ops[i].am_attrname, MAXNAMELEN); | |
637 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
638 | error = -ERANGE; | |
639 | if (ops[i].am_error < 0) | |
640 | break; | |
641 | ||
642 | switch (ops[i].am_opcode) { | |
643 | case ATTR_OP_GET: | |
739bfb2a | 644 | ops[i].am_error = xfs_attrmulti_attr_get(inode, |
1da177e4 LT |
645 | attr_name, ops[i].am_attrvalue, |
646 | &ops[i].am_length, ops[i].am_flags); | |
647 | break; | |
648 | case ATTR_OP_SET: | |
739bfb2a | 649 | ops[i].am_error = xfs_attrmulti_attr_set(inode, |
1da177e4 LT |
650 | attr_name, ops[i].am_attrvalue, |
651 | ops[i].am_length, ops[i].am_flags); | |
652 | break; | |
653 | case ATTR_OP_REMOVE: | |
739bfb2a | 654 | ops[i].am_error = xfs_attrmulti_attr_remove(inode, |
1da177e4 LT |
655 | attr_name, ops[i].am_flags); |
656 | break; | |
657 | default: | |
658 | ops[i].am_error = EINVAL; | |
659 | } | |
660 | } | |
661 | ||
662 | if (copy_to_user(am_hreq.ops, ops, size)) | |
663 | error = XFS_ERROR(EFAULT); | |
664 | ||
665 | kfree(attr_name); | |
666 | out_kfree_ops: | |
667 | kfree(ops); | |
668 | out_vn_rele: | |
669 | VN_RELE(vp); | |
670 | out: | |
671 | return -error; | |
672 | } | |
673 | ||
674 | /* prototypes for a few of the stack-hungry cases that have | |
675 | * their own functions. Functions are defined after their use | |
676 | * so gcc doesn't get fancy and inline them with -03 */ | |
677 | ||
678 | STATIC int | |
679 | xfs_ioc_space( | |
993386c1 | 680 | struct xfs_inode *ip, |
f37ea149 | 681 | struct inode *inode, |
1da177e4 LT |
682 | struct file *filp, |
683 | int flags, | |
684 | unsigned int cmd, | |
685 | void __user *arg); | |
686 | ||
687 | STATIC int | |
688 | xfs_ioc_bulkstat( | |
689 | xfs_mount_t *mp, | |
690 | unsigned int cmd, | |
691 | void __user *arg); | |
692 | ||
693 | STATIC int | |
694 | xfs_ioc_fsgeometry_v1( | |
695 | xfs_mount_t *mp, | |
696 | void __user *arg); | |
697 | ||
698 | STATIC int | |
699 | xfs_ioc_fsgeometry( | |
700 | xfs_mount_t *mp, | |
701 | void __user *arg); | |
702 | ||
703 | STATIC int | |
704 | xfs_ioc_xattr( | |
67fcaa73 | 705 | bhv_vnode_t *vp, |
1da177e4 LT |
706 | xfs_inode_t *ip, |
707 | struct file *filp, | |
708 | unsigned int cmd, | |
709 | void __user *arg); | |
710 | ||
c83bfab1 CH |
711 | STATIC int |
712 | xfs_ioc_fsgetxattr( | |
713 | xfs_inode_t *ip, | |
714 | int attr, | |
715 | void __user *arg); | |
716 | ||
1da177e4 LT |
717 | STATIC int |
718 | xfs_ioc_getbmap( | |
993386c1 | 719 | struct xfs_inode *ip, |
1da177e4 LT |
720 | int flags, |
721 | unsigned int cmd, | |
722 | void __user *arg); | |
723 | ||
724 | STATIC int | |
725 | xfs_ioc_getbmapx( | |
993386c1 | 726 | struct xfs_inode *ip, |
1da177e4 LT |
727 | void __user *arg); |
728 | ||
729 | int | |
730 | xfs_ioctl( | |
993386c1 | 731 | xfs_inode_t *ip, |
1da177e4 LT |
732 | struct file *filp, |
733 | int ioflags, | |
734 | unsigned int cmd, | |
735 | void __user *arg) | |
736 | { | |
993386c1 CH |
737 | struct inode *inode = filp->f_path.dentry->d_inode; |
738 | bhv_vnode_t *vp = vn_from_inode(inode); | |
739 | xfs_mount_t *mp = ip->i_mount; | |
1da177e4 | 740 | int error; |
1da177e4 | 741 | |
cf441eeb | 742 | xfs_itrace_entry(XFS_I(inode)); |
1da177e4 LT |
743 | switch (cmd) { |
744 | ||
745 | case XFS_IOC_ALLOCSP: | |
746 | case XFS_IOC_FREESP: | |
747 | case XFS_IOC_RESVSP: | |
748 | case XFS_IOC_UNRESVSP: | |
749 | case XFS_IOC_ALLOCSP64: | |
750 | case XFS_IOC_FREESP64: | |
751 | case XFS_IOC_RESVSP64: | |
752 | case XFS_IOC_UNRESVSP64: | |
753 | /* | |
754 | * Only allow the sys admin to reserve space unless | |
755 | * unwritten extents are enabled. | |
756 | */ | |
757 | if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) && | |
758 | !capable(CAP_SYS_ADMIN)) | |
759 | return -EPERM; | |
760 | ||
993386c1 | 761 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, arg); |
1da177e4 LT |
762 | |
763 | case XFS_IOC_DIOINFO: { | |
764 | struct dioattr da; | |
765 | xfs_buftarg_t *target = | |
766 | (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? | |
767 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
768 | ||
ce8e922c | 769 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; |
0d14824c | 770 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1da177e4 LT |
771 | |
772 | if (copy_to_user(arg, &da, sizeof(da))) | |
773 | return -XFS_ERROR(EFAULT); | |
774 | return 0; | |
775 | } | |
776 | ||
777 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
778 | case XFS_IOC_FSBULKSTAT: | |
779 | case XFS_IOC_FSINUMBERS: | |
780 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
781 | ||
782 | case XFS_IOC_FSGEOMETRY_V1: | |
783 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
784 | ||
785 | case XFS_IOC_FSGEOMETRY: | |
786 | return xfs_ioc_fsgeometry(mp, arg); | |
787 | ||
788 | case XFS_IOC_GETVERSION: | |
87395deb AD |
789 | return put_user(inode->i_generation, (int __user *)arg); |
790 | ||
c83bfab1 CH |
791 | case XFS_IOC_FSGETXATTR: |
792 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
793 | case XFS_IOC_FSGETXATTRA: | |
794 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
1da177e4 LT |
795 | case XFS_IOC_GETXFLAGS: |
796 | case XFS_IOC_SETXFLAGS: | |
1da177e4 | 797 | case XFS_IOC_FSSETXATTR: |
1da177e4 LT |
798 | return xfs_ioc_xattr(vp, ip, filp, cmd, arg); |
799 | ||
800 | case XFS_IOC_FSSETDM: { | |
801 | struct fsdmidata dmi; | |
802 | ||
803 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
804 | return -XFS_ERROR(EFAULT); | |
805 | ||
993386c1 CH |
806 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
807 | dmi.fsd_dmstate); | |
1da177e4 LT |
808 | return -error; |
809 | } | |
810 | ||
811 | case XFS_IOC_GETBMAP: | |
812 | case XFS_IOC_GETBMAPA: | |
993386c1 | 813 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); |
1da177e4 LT |
814 | |
815 | case XFS_IOC_GETBMAPX: | |
993386c1 | 816 | return xfs_ioc_getbmapx(ip, arg); |
1da177e4 LT |
817 | |
818 | case XFS_IOC_FD_TO_HANDLE: | |
819 | case XFS_IOC_PATH_TO_HANDLE: | |
820 | case XFS_IOC_PATH_TO_FSHANDLE: | |
821 | return xfs_find_handle(cmd, arg); | |
822 | ||
823 | case XFS_IOC_OPEN_BY_HANDLE: | |
824 | return xfs_open_by_handle(mp, arg, filp, inode); | |
825 | ||
826 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
5180602e | 827 | return xfs_fssetdm_by_handle(mp, arg, inode); |
1da177e4 LT |
828 | |
829 | case XFS_IOC_READLINK_BY_HANDLE: | |
5180602e | 830 | return xfs_readlink_by_handle(mp, arg, inode); |
1da177e4 LT |
831 | |
832 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
5180602e | 833 | return xfs_attrlist_by_handle(mp, arg, inode); |
1da177e4 LT |
834 | |
835 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
5180602e | 836 | return xfs_attrmulti_by_handle(mp, arg, inode); |
1da177e4 LT |
837 | |
838 | case XFS_IOC_SWAPEXT: { | |
839 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
840 | return -error; | |
841 | } | |
842 | ||
843 | case XFS_IOC_FSCOUNTS: { | |
844 | xfs_fsop_counts_t out; | |
845 | ||
846 | error = xfs_fs_counts(mp, &out); | |
847 | if (error) | |
848 | return -error; | |
849 | ||
850 | if (copy_to_user(arg, &out, sizeof(out))) | |
851 | return -XFS_ERROR(EFAULT); | |
852 | return 0; | |
853 | } | |
854 | ||
855 | case XFS_IOC_SET_RESBLKS: { | |
856 | xfs_fsop_resblks_t inout; | |
857 | __uint64_t in; | |
858 | ||
859 | if (!capable(CAP_SYS_ADMIN)) | |
860 | return -EPERM; | |
861 | ||
862 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
863 | return -XFS_ERROR(EFAULT); | |
864 | ||
865 | /* input parameter is passed in resblks field of structure */ | |
866 | in = inout.resblks; | |
867 | error = xfs_reserve_blocks(mp, &in, &inout); | |
868 | if (error) | |
869 | return -error; | |
870 | ||
871 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
872 | return -XFS_ERROR(EFAULT); | |
873 | return 0; | |
874 | } | |
875 | ||
876 | case XFS_IOC_GET_RESBLKS: { | |
877 | xfs_fsop_resblks_t out; | |
878 | ||
879 | if (!capable(CAP_SYS_ADMIN)) | |
880 | return -EPERM; | |
881 | ||
882 | error = xfs_reserve_blocks(mp, NULL, &out); | |
883 | if (error) | |
884 | return -error; | |
885 | ||
886 | if (copy_to_user(arg, &out, sizeof(out))) | |
887 | return -XFS_ERROR(EFAULT); | |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
892 | case XFS_IOC_FSGROWFSDATA: { | |
893 | xfs_growfs_data_t in; | |
894 | ||
895 | if (!capable(CAP_SYS_ADMIN)) | |
896 | return -EPERM; | |
897 | ||
898 | if (copy_from_user(&in, arg, sizeof(in))) | |
899 | return -XFS_ERROR(EFAULT); | |
900 | ||
901 | error = xfs_growfs_data(mp, &in); | |
902 | return -error; | |
903 | } | |
904 | ||
905 | case XFS_IOC_FSGROWFSLOG: { | |
906 | xfs_growfs_log_t in; | |
907 | ||
908 | if (!capable(CAP_SYS_ADMIN)) | |
909 | return -EPERM; | |
910 | ||
911 | if (copy_from_user(&in, arg, sizeof(in))) | |
912 | return -XFS_ERROR(EFAULT); | |
913 | ||
914 | error = xfs_growfs_log(mp, &in); | |
915 | return -error; | |
916 | } | |
917 | ||
918 | case XFS_IOC_FSGROWFSRT: { | |
919 | xfs_growfs_rt_t in; | |
920 | ||
921 | if (!capable(CAP_SYS_ADMIN)) | |
922 | return -EPERM; | |
923 | ||
924 | if (copy_from_user(&in, arg, sizeof(in))) | |
925 | return -XFS_ERROR(EFAULT); | |
926 | ||
927 | error = xfs_growfs_rt(mp, &in); | |
928 | return -error; | |
929 | } | |
930 | ||
931 | case XFS_IOC_FREEZE: | |
932 | if (!capable(CAP_SYS_ADMIN)) | |
933 | return -EPERM; | |
934 | ||
935 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
936 | freeze_bdev(inode->i_sb->s_bdev); | |
937 | return 0; | |
938 | ||
939 | case XFS_IOC_THAW: | |
940 | if (!capable(CAP_SYS_ADMIN)) | |
941 | return -EPERM; | |
942 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
943 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
944 | return 0; | |
945 | ||
946 | case XFS_IOC_GOINGDOWN: { | |
947 | __uint32_t in; | |
948 | ||
949 | if (!capable(CAP_SYS_ADMIN)) | |
950 | return -EPERM; | |
951 | ||
952 | if (get_user(in, (__uint32_t __user *)arg)) | |
953 | return -XFS_ERROR(EFAULT); | |
954 | ||
955 | error = xfs_fs_goingdown(mp, in); | |
956 | return -error; | |
957 | } | |
958 | ||
959 | case XFS_IOC_ERROR_INJECTION: { | |
960 | xfs_error_injection_t in; | |
961 | ||
962 | if (!capable(CAP_SYS_ADMIN)) | |
963 | return -EPERM; | |
964 | ||
965 | if (copy_from_user(&in, arg, sizeof(in))) | |
966 | return -XFS_ERROR(EFAULT); | |
967 | ||
968 | error = xfs_errortag_add(in.errtag, mp); | |
969 | return -error; | |
970 | } | |
971 | ||
972 | case XFS_IOC_ERROR_CLEARALL: | |
973 | if (!capable(CAP_SYS_ADMIN)) | |
974 | return -EPERM; | |
975 | ||
0ce4cfd4 | 976 | error = xfs_errortag_clearall(mp, 1); |
1da177e4 LT |
977 | return -error; |
978 | ||
979 | default: | |
980 | return -ENOTTY; | |
981 | } | |
982 | } | |
983 | ||
984 | STATIC int | |
985 | xfs_ioc_space( | |
993386c1 | 986 | struct xfs_inode *ip, |
f37ea149 | 987 | struct inode *inode, |
1da177e4 LT |
988 | struct file *filp, |
989 | int ioflags, | |
990 | unsigned int cmd, | |
991 | void __user *arg) | |
992 | { | |
993 | xfs_flock64_t bf; | |
994 | int attr_flags = 0; | |
995 | int error; | |
996 | ||
f37ea149 | 997 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
998 | return -XFS_ERROR(EPERM); |
999 | ||
ad4a8ac4 | 1000 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
1001 | return -XFS_ERROR(EBADF); |
1002 | ||
f37ea149 | 1003 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
1004 | return -XFS_ERROR(EINVAL); |
1005 | ||
1006 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
1007 | return -XFS_ERROR(EFAULT); | |
1008 | ||
1009 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1010 | attr_flags |= ATTR_NONBLOCK; | |
1011 | if (ioflags & IO_INVIS) | |
1012 | attr_flags |= ATTR_DMI; | |
1013 | ||
993386c1 | 1014 | error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos, |
1da177e4 LT |
1015 | NULL, attr_flags); |
1016 | return -error; | |
1017 | } | |
1018 | ||
1019 | STATIC int | |
1020 | xfs_ioc_bulkstat( | |
1021 | xfs_mount_t *mp, | |
1022 | unsigned int cmd, | |
1023 | void __user *arg) | |
1024 | { | |
1025 | xfs_fsop_bulkreq_t bulkreq; | |
1026 | int count; /* # of records returned */ | |
1027 | xfs_ino_t inlast; /* last inode number */ | |
1028 | int done; | |
1029 | int error; | |
1030 | ||
1031 | /* done = 1 if there are more stats to get and if bulkstat */ | |
1032 | /* should be called again (unused here, but used in dmapi) */ | |
1033 | ||
1034 | if (!capable(CAP_SYS_ADMIN)) | |
1035 | return -EPERM; | |
1036 | ||
1037 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1038 | return -XFS_ERROR(EIO); | |
1039 | ||
1040 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
1041 | return -XFS_ERROR(EFAULT); | |
1042 | ||
1043 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
1044 | return -XFS_ERROR(EFAULT); | |
1045 | ||
1046 | if ((count = bulkreq.icount) <= 0) | |
1047 | return -XFS_ERROR(EINVAL); | |
1048 | ||
cd57e594 LM |
1049 | if (bulkreq.ubuffer == NULL) |
1050 | return -XFS_ERROR(EINVAL); | |
1051 | ||
1da177e4 LT |
1052 | if (cmd == XFS_IOC_FSINUMBERS) |
1053 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 1054 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
1055 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
1056 | error = xfs_bulkstat_single(mp, &inlast, | |
1057 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
1058 | else /* XFS_IOC_FSBULKSTAT */ |
1059 | error = xfs_bulkstat(mp, &inlast, &count, | |
1060 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
1061 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
1062 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
1063 | |
1064 | if (error) | |
1065 | return -error; | |
1066 | ||
1067 | if (bulkreq.ocount != NULL) { | |
1068 | if (copy_to_user(bulkreq.lastip, &inlast, | |
1069 | sizeof(xfs_ino_t))) | |
1070 | return -XFS_ERROR(EFAULT); | |
1071 | ||
1072 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
1073 | return -XFS_ERROR(EFAULT); | |
1074 | } | |
1075 | ||
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | STATIC int | |
1080 | xfs_ioc_fsgeometry_v1( | |
1081 | xfs_mount_t *mp, | |
1082 | void __user *arg) | |
1083 | { | |
1084 | xfs_fsop_geom_v1_t fsgeo; | |
1085 | int error; | |
1086 | ||
1087 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
1088 | if (error) | |
1089 | return -error; | |
1090 | ||
1091 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1092 | return -XFS_ERROR(EFAULT); | |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | STATIC int | |
1097 | xfs_ioc_fsgeometry( | |
1098 | xfs_mount_t *mp, | |
1099 | void __user *arg) | |
1100 | { | |
1101 | xfs_fsop_geom_t fsgeo; | |
1102 | int error; | |
1103 | ||
1104 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
1105 | if (error) | |
1106 | return -error; | |
1107 | ||
1108 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1109 | return -XFS_ERROR(EFAULT); | |
1110 | return 0; | |
1111 | } | |
1112 | ||
1113 | /* | |
1114 | * Linux extended inode flags interface. | |
1115 | */ | |
1da177e4 LT |
1116 | |
1117 | STATIC unsigned int | |
1118 | xfs_merge_ioc_xflags( | |
1119 | unsigned int flags, | |
1120 | unsigned int start) | |
1121 | { | |
1122 | unsigned int xflags = start; | |
1123 | ||
39058a0e | 1124 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
1125 | xflags |= XFS_XFLAG_IMMUTABLE; |
1126 | else | |
1127 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 1128 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
1129 | xflags |= XFS_XFLAG_APPEND; |
1130 | else | |
1131 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 1132 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
1133 | xflags |= XFS_XFLAG_SYNC; |
1134 | else | |
1135 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 1136 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
1137 | xflags |= XFS_XFLAG_NOATIME; |
1138 | else | |
1139 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 1140 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
1141 | xflags |= XFS_XFLAG_NODUMP; |
1142 | else | |
1143 | xflags &= ~XFS_XFLAG_NODUMP; | |
1144 | ||
1145 | return xflags; | |
1146 | } | |
1147 | ||
1148 | STATIC unsigned int | |
1149 | xfs_di2lxflags( | |
1150 | __uint16_t di_flags) | |
1151 | { | |
1152 | unsigned int flags = 0; | |
1153 | ||
1154 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 1155 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 1156 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 1157 | flags |= FS_APPEND_FL; |
1da177e4 | 1158 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 1159 | flags |= FS_SYNC_FL; |
1da177e4 | 1160 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 1161 | flags |= FS_NOATIME_FL; |
1da177e4 | 1162 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 1163 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
1164 | return flags; |
1165 | } | |
1166 | ||
c83bfab1 CH |
1167 | STATIC int |
1168 | xfs_ioc_fsgetxattr( | |
1169 | xfs_inode_t *ip, | |
1170 | int attr, | |
1171 | void __user *arg) | |
1172 | { | |
1173 | struct fsxattr fa; | |
1174 | ||
1175 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1176 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
1177 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
1178 | fa.fsx_projid = ip->i_d.di_projid; | |
1179 | ||
1180 | if (attr) { | |
1181 | if (ip->i_afp) { | |
1182 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
1183 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
1184 | sizeof(xfs_bmbt_rec_t); | |
1185 | else | |
1186 | fa.fsx_nextents = ip->i_d.di_anextents; | |
1187 | } else | |
1188 | fa.fsx_nextents = 0; | |
1189 | } else { | |
1190 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
1191 | fa.fsx_nextents = ip->i_df.if_bytes / | |
1192 | sizeof(xfs_bmbt_rec_t); | |
1193 | else | |
1194 | fa.fsx_nextents = ip->i_d.di_nextents; | |
1195 | } | |
1196 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1197 | ||
1198 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
1199 | return -EFAULT; | |
1200 | return 0; | |
1201 | } | |
1202 | ||
1da177e4 LT |
1203 | STATIC int |
1204 | xfs_ioc_xattr( | |
67fcaa73 | 1205 | bhv_vnode_t *vp, |
1da177e4 LT |
1206 | xfs_inode_t *ip, |
1207 | struct file *filp, | |
1208 | unsigned int cmd, | |
1209 | void __user *arg) | |
1210 | { | |
1211 | struct fsxattr fa; | |
8285fb58 | 1212 | struct bhv_vattr *vattr; |
220b5284 | 1213 | int error = 0; |
1da177e4 LT |
1214 | int attr_flags; |
1215 | unsigned int flags; | |
1216 | ||
220b5284 NS |
1217 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
1218 | if (unlikely(!vattr)) | |
1219 | return -ENOMEM; | |
1220 | ||
1da177e4 | 1221 | switch (cmd) { |
1da177e4 | 1222 | case XFS_IOC_FSSETXATTR: { |
220b5284 NS |
1223 | if (copy_from_user(&fa, arg, sizeof(fa))) { |
1224 | error = -EFAULT; | |
1225 | break; | |
1226 | } | |
1da177e4 LT |
1227 | |
1228 | attr_flags = 0; | |
1229 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1230 | attr_flags |= ATTR_NONBLOCK; | |
1231 | ||
220b5284 NS |
1232 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
1233 | vattr->va_xflags = fa.fsx_xflags; | |
1234 | vattr->va_extsize = fa.fsx_extsize; | |
1235 | vattr->va_projid = fa.fsx_projid; | |
1da177e4 | 1236 | |
739bfb2a | 1237 | error = xfs_setattr(ip, vattr, attr_flags, NULL); |
220b5284 | 1238 | if (likely(!error)) |
21a62542 | 1239 | vn_revalidate(vp); /* update flags */ |
220b5284 NS |
1240 | error = -error; |
1241 | break; | |
1da177e4 LT |
1242 | } |
1243 | ||
1da177e4 LT |
1244 | case XFS_IOC_GETXFLAGS: { |
1245 | flags = xfs_di2lxflags(ip->i_d.di_flags); | |
1246 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
220b5284 NS |
1247 | error = -EFAULT; |
1248 | break; | |
1da177e4 LT |
1249 | } |
1250 | ||
1251 | case XFS_IOC_SETXFLAGS: { | |
220b5284 NS |
1252 | if (copy_from_user(&flags, arg, sizeof(flags))) { |
1253 | error = -EFAULT; | |
1254 | break; | |
1255 | } | |
1da177e4 | 1256 | |
39058a0e ES |
1257 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1258 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1259 | FS_SYNC_FL)) { | |
220b5284 NS |
1260 | error = -EOPNOTSUPP; |
1261 | break; | |
1262 | } | |
1da177e4 LT |
1263 | |
1264 | attr_flags = 0; | |
1265 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1266 | attr_flags |= ATTR_NONBLOCK; | |
1267 | ||
220b5284 NS |
1268 | vattr->va_mask = XFS_AT_XFLAGS; |
1269 | vattr->va_xflags = xfs_merge_ioc_xflags(flags, | |
1270 | xfs_ip2xflags(ip)); | |
1da177e4 | 1271 | |
739bfb2a | 1272 | error = xfs_setattr(ip, vattr, attr_flags, NULL); |
220b5284 | 1273 | if (likely(!error)) |
21a62542 | 1274 | vn_revalidate(vp); /* update flags */ |
220b5284 NS |
1275 | error = -error; |
1276 | break; | |
1da177e4 LT |
1277 | } |
1278 | ||
1da177e4 | 1279 | default: |
220b5284 NS |
1280 | error = -ENOTTY; |
1281 | break; | |
1da177e4 | 1282 | } |
220b5284 NS |
1283 | |
1284 | kfree(vattr); | |
1285 | return error; | |
1da177e4 LT |
1286 | } |
1287 | ||
1288 | STATIC int | |
1289 | xfs_ioc_getbmap( | |
993386c1 | 1290 | struct xfs_inode *ip, |
1da177e4 LT |
1291 | int ioflags, |
1292 | unsigned int cmd, | |
1293 | void __user *arg) | |
1294 | { | |
1295 | struct getbmap bm; | |
1296 | int iflags; | |
1297 | int error; | |
1298 | ||
1299 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
1300 | return -XFS_ERROR(EFAULT); | |
1301 | ||
1302 | if (bm.bmv_count < 2) | |
1303 | return -XFS_ERROR(EINVAL); | |
1304 | ||
1305 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
1306 | if (ioflags & IO_INVIS) | |
1307 | iflags |= BMV_IF_NO_DMAPI_READ; | |
1308 | ||
993386c1 | 1309 | error = xfs_getbmap(ip, &bm, (struct getbmap __user *)arg+1, iflags); |
1da177e4 LT |
1310 | if (error) |
1311 | return -error; | |
1312 | ||
1313 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
1314 | return -XFS_ERROR(EFAULT); | |
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | STATIC int | |
1319 | xfs_ioc_getbmapx( | |
993386c1 | 1320 | struct xfs_inode *ip, |
1da177e4 LT |
1321 | void __user *arg) |
1322 | { | |
1323 | struct getbmapx bmx; | |
1324 | struct getbmap bm; | |
1325 | int iflags; | |
1326 | int error; | |
1327 | ||
1328 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1329 | return -XFS_ERROR(EFAULT); | |
1330 | ||
1331 | if (bmx.bmv_count < 2) | |
1332 | return -XFS_ERROR(EINVAL); | |
1333 | ||
1334 | /* | |
1335 | * Map input getbmapx structure to a getbmap | |
1336 | * structure for xfs_getbmap. | |
1337 | */ | |
1338 | GETBMAP_CONVERT(bmx, bm); | |
1339 | ||
1340 | iflags = bmx.bmv_iflags; | |
1341 | ||
1342 | if (iflags & (~BMV_IF_VALID)) | |
1343 | return -XFS_ERROR(EINVAL); | |
1344 | ||
1345 | iflags |= BMV_IF_EXTENDED; | |
1346 | ||
993386c1 | 1347 | error = xfs_getbmap(ip, &bm, (struct getbmapx __user *)arg+1, iflags); |
1da177e4 LT |
1348 | if (error) |
1349 | return -error; | |
1350 | ||
1351 | GETBMAP_CONVERT(bm, bmx); | |
1352 | ||
1353 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1354 | return -XFS_ERROR(EFAULT); | |
1355 | ||
1356 | return 0; | |
1357 | } |