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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_dir.h" |
27 | #include "xfs_dir2.h" | |
28 | #include "xfs_alloc.h" | |
29 | #include "xfs_dmapi.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dir2_sf.h" |
37 | #include "xfs_dinode.h" | |
38 | #include "xfs_inode.h" | |
a844f451 NS |
39 | #include "xfs_btree.h" |
40 | #include "xfs_ialloc.h" | |
1da177e4 | 41 | #include "xfs_rtalloc.h" |
1da177e4 | 42 | #include "xfs_itable.h" |
a844f451 | 43 | #include "xfs_error.h" |
1da177e4 LT |
44 | #include "xfs_rw.h" |
45 | #include "xfs_acl.h" | |
46 | #include "xfs_cap.h" | |
47 | #include "xfs_mac.h" | |
48 | #include "xfs_attr.h" | |
a844f451 | 49 | #include "xfs_bmap.h" |
1da177e4 LT |
50 | #include "xfs_buf_item.h" |
51 | #include "xfs_utils.h" | |
52 | #include "xfs_dfrag.h" | |
53 | #include "xfs_fsops.h" | |
54 | ||
16f7e0fe | 55 | #include <linux/capability.h> |
1da177e4 LT |
56 | #include <linux/dcache.h> |
57 | #include <linux/mount.h> | |
58 | #include <linux/namei.h> | |
59 | #include <linux/pagemap.h> | |
60 | ||
61 | /* | |
62 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
63 | * a file or fs handle. | |
64 | * | |
65 | * XFS_IOC_PATH_TO_FSHANDLE | |
66 | * returns fs handle for a mount point or path within that mount point | |
67 | * XFS_IOC_FD_TO_HANDLE | |
68 | * returns full handle for a FD opened in user space | |
69 | * XFS_IOC_PATH_TO_HANDLE | |
70 | * returns full handle for a path | |
71 | */ | |
72 | STATIC int | |
73 | xfs_find_handle( | |
74 | unsigned int cmd, | |
75 | void __user *arg) | |
76 | { | |
77 | int hsize; | |
78 | xfs_handle_t handle; | |
79 | xfs_fsop_handlereq_t hreq; | |
80 | struct inode *inode; | |
81 | struct vnode *vp; | |
82 | ||
83 | if (copy_from_user(&hreq, arg, sizeof(hreq))) | |
84 | return -XFS_ERROR(EFAULT); | |
85 | ||
86 | memset((char *)&handle, 0, sizeof(handle)); | |
87 | ||
88 | switch (cmd) { | |
89 | case XFS_IOC_PATH_TO_FSHANDLE: | |
90 | case XFS_IOC_PATH_TO_HANDLE: { | |
91 | struct nameidata nd; | |
92 | int error; | |
93 | ||
94 | error = user_path_walk_link((const char __user *)hreq.path, &nd); | |
95 | if (error) | |
96 | return error; | |
97 | ||
98 | ASSERT(nd.dentry); | |
99 | ASSERT(nd.dentry->d_inode); | |
100 | inode = igrab(nd.dentry->d_inode); | |
101 | path_release(&nd); | |
102 | break; | |
103 | } | |
104 | ||
105 | case XFS_IOC_FD_TO_HANDLE: { | |
106 | struct file *file; | |
107 | ||
108 | file = fget(hreq.fd); | |
109 | if (!file) | |
110 | return -EBADF; | |
111 | ||
112 | ASSERT(file->f_dentry); | |
113 | ASSERT(file->f_dentry->d_inode); | |
114 | inode = igrab(file->f_dentry->d_inode); | |
115 | fput(file); | |
116 | break; | |
117 | } | |
118 | ||
119 | default: | |
120 | ASSERT(0); | |
121 | return -XFS_ERROR(EINVAL); | |
122 | } | |
123 | ||
124 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
125 | /* we're not in XFS anymore, Toto */ | |
126 | iput(inode); | |
127 | return -XFS_ERROR(EINVAL); | |
128 | } | |
129 | ||
0432dab2 CH |
130 | switch (inode->i_mode & S_IFMT) { |
131 | case S_IFREG: | |
132 | case S_IFDIR: | |
133 | case S_IFLNK: | |
134 | break; | |
135 | default: | |
1da177e4 LT |
136 | iput(inode); |
137 | return -XFS_ERROR(EBADF); | |
138 | } | |
139 | ||
0432dab2 | 140 | /* we need the vnode */ |
ec86dc02 | 141 | vp = vn_from_inode(inode); |
0432dab2 | 142 | |
1da177e4 LT |
143 | /* now we can grab the fsid */ |
144 | memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t)); | |
145 | hsize = sizeof(xfs_fsid_t); | |
146 | ||
147 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
148 | xfs_inode_t *ip; | |
1da177e4 LT |
149 | int lock_mode; |
150 | ||
151 | /* need to get access to the xfs_inode to read the generation */ | |
75e17b3c | 152 | ip = xfs_vtoi(vp); |
1da177e4 LT |
153 | ASSERT(ip); |
154 | lock_mode = xfs_ilock_map_shared(ip); | |
155 | ||
156 | /* fill in fid section of handle from inode */ | |
157 | handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) - | |
158 | sizeof(handle.ha_fid.xfs_fid_len); | |
159 | handle.ha_fid.xfs_fid_pad = 0; | |
160 | handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen; | |
161 | handle.ha_fid.xfs_fid_ino = ip->i_ino; | |
162 | ||
163 | xfs_iunlock_map_shared(ip, lock_mode); | |
164 | ||
165 | hsize = XFS_HSIZE(handle); | |
166 | } | |
167 | ||
168 | /* now copy our handle into the user buffer & write out the size */ | |
169 | if (copy_to_user(hreq.ohandle, &handle, hsize) || | |
170 | copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) { | |
171 | iput(inode); | |
172 | return -XFS_ERROR(EFAULT); | |
173 | } | |
174 | ||
175 | iput(inode); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | ||
180 | /* | |
181 | * Convert userspace handle data into vnode (and inode). | |
182 | * We [ab]use the fact that all the fsop_handlereq ioctl calls | |
183 | * have a data structure argument whose first component is always | |
184 | * a xfs_fsop_handlereq_t, so we can cast to and from this type. | |
185 | * This allows us to optimise the copy_from_user calls and gives | |
186 | * a handy, shared routine. | |
187 | * | |
188 | * If no error, caller must always VN_RELE the returned vp. | |
189 | */ | |
190 | STATIC int | |
191 | xfs_vget_fsop_handlereq( | |
192 | xfs_mount_t *mp, | |
193 | struct inode *parinode, /* parent inode pointer */ | |
194 | xfs_fsop_handlereq_t *hreq, | |
195 | vnode_t **vp, | |
196 | struct inode **inode) | |
197 | { | |
198 | void __user *hanp; | |
199 | size_t hlen; | |
200 | xfs_fid_t *xfid; | |
201 | xfs_handle_t *handlep; | |
202 | xfs_handle_t handle; | |
203 | xfs_inode_t *ip; | |
204 | struct inode *inodep; | |
205 | vnode_t *vpp; | |
206 | xfs_ino_t ino; | |
207 | __u32 igen; | |
208 | int error; | |
209 | ||
210 | /* | |
211 | * Only allow handle opens under a directory. | |
212 | */ | |
213 | if (!S_ISDIR(parinode->i_mode)) | |
214 | return XFS_ERROR(ENOTDIR); | |
215 | ||
216 | hanp = hreq->ihandle; | |
217 | hlen = hreq->ihandlen; | |
218 | handlep = &handle; | |
219 | ||
220 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
221 | return XFS_ERROR(EINVAL); | |
222 | if (copy_from_user(handlep, hanp, hlen)) | |
223 | return XFS_ERROR(EFAULT); | |
224 | if (hlen < sizeof(*handlep)) | |
225 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
226 | if (hlen > sizeof(handlep->ha_fsid)) { | |
227 | if (handlep->ha_fid.xfs_fid_len != | |
228 | (hlen - sizeof(handlep->ha_fsid) | |
229 | - sizeof(handlep->ha_fid.xfs_fid_len)) | |
230 | || handlep->ha_fid.xfs_fid_pad) | |
231 | return XFS_ERROR(EINVAL); | |
232 | } | |
233 | ||
234 | /* | |
235 | * Crack the handle, obtain the inode # & generation # | |
236 | */ | |
237 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
238 | if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) { | |
239 | ino = xfid->xfs_fid_ino; | |
240 | igen = xfid->xfs_fid_gen; | |
241 | } else { | |
242 | return XFS_ERROR(EINVAL); | |
243 | } | |
244 | ||
245 | /* | |
246 | * Get the XFS inode, building a vnode to go with it. | |
247 | */ | |
248 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
249 | if (error) | |
250 | return error; | |
251 | if (ip == NULL) | |
252 | return XFS_ERROR(EIO); | |
253 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
254 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
255 | return XFS_ERROR(ENOENT); | |
256 | } | |
257 | ||
258 | vpp = XFS_ITOV(ip); | |
ec86dc02 | 259 | inodep = vn_to_inode(vpp); |
1da177e4 LT |
260 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
261 | ||
262 | *vp = vpp; | |
263 | *inode = inodep; | |
264 | return 0; | |
265 | } | |
266 | ||
267 | STATIC int | |
268 | xfs_open_by_handle( | |
269 | xfs_mount_t *mp, | |
270 | void __user *arg, | |
271 | struct file *parfilp, | |
272 | struct inode *parinode) | |
273 | { | |
274 | int error; | |
275 | int new_fd; | |
276 | int permflag; | |
277 | struct file *filp; | |
278 | struct inode *inode; | |
279 | struct dentry *dentry; | |
280 | vnode_t *vp; | |
281 | xfs_fsop_handlereq_t hreq; | |
282 | ||
283 | if (!capable(CAP_SYS_ADMIN)) | |
284 | return -XFS_ERROR(EPERM); | |
285 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
286 | return -XFS_ERROR(EFAULT); | |
287 | ||
288 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
289 | if (error) | |
290 | return -error; | |
291 | ||
292 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
293 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
294 | iput(inode); | |
295 | return -XFS_ERROR(EINVAL); | |
296 | } | |
297 | ||
298 | #if BITS_PER_LONG != 32 | |
299 | hreq.oflags |= O_LARGEFILE; | |
300 | #endif | |
301 | /* Put open permission in namei format. */ | |
302 | permflag = hreq.oflags; | |
303 | if ((permflag+1) & O_ACCMODE) | |
304 | permflag++; | |
305 | if (permflag & O_TRUNC) | |
306 | permflag |= 2; | |
307 | ||
308 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
309 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
310 | iput(inode); | |
311 | return -XFS_ERROR(EPERM); | |
312 | } | |
313 | ||
314 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
315 | iput(inode); | |
316 | return -XFS_ERROR(EACCES); | |
317 | } | |
318 | ||
319 | /* Can't write directories. */ | |
320 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
321 | iput(inode); | |
322 | return -XFS_ERROR(EISDIR); | |
323 | } | |
324 | ||
325 | if ((new_fd = get_unused_fd()) < 0) { | |
326 | iput(inode); | |
327 | return new_fd; | |
328 | } | |
329 | ||
330 | dentry = d_alloc_anon(inode); | |
331 | if (dentry == NULL) { | |
332 | iput(inode); | |
333 | put_unused_fd(new_fd); | |
334 | return -XFS_ERROR(ENOMEM); | |
335 | } | |
336 | ||
337 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
338 | mntget(parfilp->f_vfsmnt); | |
339 | ||
340 | /* Create file pointer. */ | |
341 | filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags); | |
342 | if (IS_ERR(filp)) { | |
343 | put_unused_fd(new_fd); | |
344 | return -XFS_ERROR(-PTR_ERR(filp)); | |
345 | } | |
346 | if (inode->i_mode & S_IFREG) | |
3562fd45 | 347 | filp->f_op = &xfs_invis_file_operations; |
1da177e4 LT |
348 | |
349 | fd_install(new_fd, filp); | |
350 | return new_fd; | |
351 | } | |
352 | ||
353 | STATIC int | |
354 | xfs_readlink_by_handle( | |
355 | xfs_mount_t *mp, | |
356 | void __user *arg, | |
357 | struct file *parfilp, | |
358 | struct inode *parinode) | |
359 | { | |
360 | int error; | |
361 | struct iovec aiov; | |
362 | struct uio auio; | |
363 | struct inode *inode; | |
364 | xfs_fsop_handlereq_t hreq; | |
365 | vnode_t *vp; | |
366 | __u32 olen; | |
367 | ||
368 | if (!capable(CAP_SYS_ADMIN)) | |
369 | return -XFS_ERROR(EPERM); | |
370 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
371 | return -XFS_ERROR(EFAULT); | |
372 | ||
373 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
374 | if (error) | |
375 | return -error; | |
376 | ||
377 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 378 | if (!S_ISLNK(inode->i_mode)) { |
1da177e4 LT |
379 | VN_RELE(vp); |
380 | return -XFS_ERROR(EINVAL); | |
381 | } | |
382 | ||
383 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
384 | VN_RELE(vp); | |
385 | return -XFS_ERROR(EFAULT); | |
386 | } | |
387 | aiov.iov_len = olen; | |
388 | aiov.iov_base = hreq.ohandle; | |
389 | ||
390 | auio.uio_iov = &aiov; | |
391 | auio.uio_iovcnt = 1; | |
392 | auio.uio_offset = 0; | |
393 | auio.uio_segflg = UIO_USERSPACE; | |
394 | auio.uio_resid = olen; | |
395 | ||
396 | VOP_READLINK(vp, &auio, IO_INVIS, NULL, error); | |
397 | ||
398 | VN_RELE(vp); | |
399 | return (olen - auio.uio_resid); | |
400 | } | |
401 | ||
402 | STATIC int | |
403 | xfs_fssetdm_by_handle( | |
404 | xfs_mount_t *mp, | |
405 | void __user *arg, | |
406 | struct file *parfilp, | |
407 | struct inode *parinode) | |
408 | { | |
409 | int error; | |
410 | struct fsdmidata fsd; | |
411 | xfs_fsop_setdm_handlereq_t dmhreq; | |
412 | struct inode *inode; | |
413 | bhv_desc_t *bdp; | |
414 | vnode_t *vp; | |
415 | ||
416 | if (!capable(CAP_MKNOD)) | |
417 | return -XFS_ERROR(EPERM); | |
418 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
419 | return -XFS_ERROR(EFAULT); | |
420 | ||
421 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode); | |
422 | if (error) | |
423 | return -error; | |
424 | ||
425 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
426 | VN_RELE(vp); | |
427 | return -XFS_ERROR(EPERM); | |
428 | } | |
429 | ||
430 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
431 | VN_RELE(vp); | |
432 | return -XFS_ERROR(EFAULT); | |
433 | } | |
434 | ||
435 | bdp = bhv_base_unlocked(VN_BHV_HEAD(vp)); | |
436 | error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL); | |
437 | ||
438 | VN_RELE(vp); | |
439 | if (error) | |
440 | return -error; | |
441 | return 0; | |
442 | } | |
443 | ||
444 | STATIC int | |
445 | xfs_attrlist_by_handle( | |
446 | xfs_mount_t *mp, | |
447 | void __user *arg, | |
448 | struct file *parfilp, | |
449 | struct inode *parinode) | |
450 | { | |
451 | int error; | |
452 | attrlist_cursor_kern_t *cursor; | |
453 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
454 | struct inode *inode; | |
455 | vnode_t *vp; | |
456 | char *kbuf; | |
457 | ||
458 | if (!capable(CAP_SYS_ADMIN)) | |
459 | return -XFS_ERROR(EPERM); | |
460 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
461 | return -XFS_ERROR(EFAULT); | |
462 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
463 | return -XFS_ERROR(EINVAL); | |
464 | ||
465 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, | |
466 | &vp, &inode); | |
467 | if (error) | |
468 | goto out; | |
469 | ||
470 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
471 | if (!kbuf) | |
472 | goto out_vn_rele; | |
473 | ||
474 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
475 | VOP_ATTR_LIST(vp, kbuf, al_hreq.buflen, al_hreq.flags, | |
476 | cursor, NULL, error); | |
477 | if (error) | |
478 | goto out_kfree; | |
479 | ||
480 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
481 | error = -EFAULT; | |
482 | ||
483 | out_kfree: | |
484 | kfree(kbuf); | |
485 | out_vn_rele: | |
486 | VN_RELE(vp); | |
487 | out: | |
488 | return -error; | |
489 | } | |
490 | ||
491 | STATIC int | |
492 | xfs_attrmulti_attr_get( | |
493 | struct vnode *vp, | |
494 | char *name, | |
495 | char __user *ubuf, | |
496 | __uint32_t *len, | |
497 | __uint32_t flags) | |
498 | { | |
499 | char *kbuf; | |
500 | int error = EFAULT; | |
501 | ||
502 | if (*len > XATTR_SIZE_MAX) | |
503 | return EINVAL; | |
504 | kbuf = kmalloc(*len, GFP_KERNEL); | |
505 | if (!kbuf) | |
506 | return ENOMEM; | |
507 | ||
508 | VOP_ATTR_GET(vp, name, kbuf, len, flags, NULL, error); | |
509 | if (error) | |
510 | goto out_kfree; | |
511 | ||
512 | if (copy_to_user(ubuf, kbuf, *len)) | |
513 | error = EFAULT; | |
514 | ||
515 | out_kfree: | |
516 | kfree(kbuf); | |
517 | return error; | |
518 | } | |
519 | ||
520 | STATIC int | |
521 | xfs_attrmulti_attr_set( | |
522 | struct vnode *vp, | |
523 | char *name, | |
524 | const char __user *ubuf, | |
525 | __uint32_t len, | |
526 | __uint32_t flags) | |
527 | { | |
528 | char *kbuf; | |
529 | int error = EFAULT; | |
530 | ||
3542c6e1 CH |
531 | if (IS_RDONLY(&vp->v_inode)) |
532 | return -EROFS; | |
1da177e4 LT |
533 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
534 | return EPERM; | |
535 | if (len > XATTR_SIZE_MAX) | |
536 | return EINVAL; | |
537 | ||
538 | kbuf = kmalloc(len, GFP_KERNEL); | |
539 | if (!kbuf) | |
540 | return ENOMEM; | |
541 | ||
542 | if (copy_from_user(kbuf, ubuf, len)) | |
543 | goto out_kfree; | |
544 | ||
545 | VOP_ATTR_SET(vp, name, kbuf, len, flags, NULL, error); | |
546 | ||
547 | out_kfree: | |
548 | kfree(kbuf); | |
549 | return error; | |
550 | } | |
551 | ||
552 | STATIC int | |
553 | xfs_attrmulti_attr_remove( | |
554 | struct vnode *vp, | |
555 | char *name, | |
556 | __uint32_t flags) | |
557 | { | |
558 | int error; | |
559 | ||
3542c6e1 CH |
560 | |
561 | if (IS_RDONLY(&vp->v_inode)) | |
562 | return -EROFS; | |
1da177e4 LT |
563 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
564 | return EPERM; | |
565 | ||
566 | VOP_ATTR_REMOVE(vp, name, flags, NULL, error); | |
567 | return error; | |
568 | } | |
569 | ||
570 | STATIC int | |
571 | xfs_attrmulti_by_handle( | |
572 | xfs_mount_t *mp, | |
573 | void __user *arg, | |
574 | struct file *parfilp, | |
575 | struct inode *parinode) | |
576 | { | |
577 | int error; | |
578 | xfs_attr_multiop_t *ops; | |
579 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
580 | struct inode *inode; | |
581 | vnode_t *vp; | |
582 | unsigned int i, size; | |
583 | char *attr_name; | |
584 | ||
585 | if (!capable(CAP_SYS_ADMIN)) | |
586 | return -XFS_ERROR(EPERM); | |
587 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
588 | return -XFS_ERROR(EFAULT); | |
589 | ||
590 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode); | |
591 | if (error) | |
592 | goto out; | |
593 | ||
594 | error = E2BIG; | |
595 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
596 | if (!size || size > 16 * PAGE_SIZE) | |
597 | goto out_vn_rele; | |
598 | ||
599 | error = ENOMEM; | |
600 | ops = kmalloc(size, GFP_KERNEL); | |
601 | if (!ops) | |
602 | goto out_vn_rele; | |
603 | ||
604 | error = EFAULT; | |
605 | if (copy_from_user(ops, am_hreq.ops, size)) | |
606 | goto out_kfree_ops; | |
607 | ||
608 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
609 | if (!attr_name) | |
610 | goto out_kfree_ops; | |
611 | ||
612 | ||
613 | error = 0; | |
614 | for (i = 0; i < am_hreq.opcount; i++) { | |
615 | ops[i].am_error = strncpy_from_user(attr_name, | |
616 | ops[i].am_attrname, MAXNAMELEN); | |
617 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
618 | error = -ERANGE; | |
619 | if (ops[i].am_error < 0) | |
620 | break; | |
621 | ||
622 | switch (ops[i].am_opcode) { | |
623 | case ATTR_OP_GET: | |
624 | ops[i].am_error = xfs_attrmulti_attr_get(vp, | |
625 | attr_name, ops[i].am_attrvalue, | |
626 | &ops[i].am_length, ops[i].am_flags); | |
627 | break; | |
628 | case ATTR_OP_SET: | |
629 | ops[i].am_error = xfs_attrmulti_attr_set(vp, | |
630 | attr_name, ops[i].am_attrvalue, | |
631 | ops[i].am_length, ops[i].am_flags); | |
632 | break; | |
633 | case ATTR_OP_REMOVE: | |
634 | ops[i].am_error = xfs_attrmulti_attr_remove(vp, | |
635 | attr_name, ops[i].am_flags); | |
636 | break; | |
637 | default: | |
638 | ops[i].am_error = EINVAL; | |
639 | } | |
640 | } | |
641 | ||
642 | if (copy_to_user(am_hreq.ops, ops, size)) | |
643 | error = XFS_ERROR(EFAULT); | |
644 | ||
645 | kfree(attr_name); | |
646 | out_kfree_ops: | |
647 | kfree(ops); | |
648 | out_vn_rele: | |
649 | VN_RELE(vp); | |
650 | out: | |
651 | return -error; | |
652 | } | |
653 | ||
654 | /* prototypes for a few of the stack-hungry cases that have | |
655 | * their own functions. Functions are defined after their use | |
656 | * so gcc doesn't get fancy and inline them with -03 */ | |
657 | ||
658 | STATIC int | |
659 | xfs_ioc_space( | |
660 | bhv_desc_t *bdp, | |
661 | vnode_t *vp, | |
662 | struct file *filp, | |
663 | int flags, | |
664 | unsigned int cmd, | |
665 | void __user *arg); | |
666 | ||
667 | STATIC int | |
668 | xfs_ioc_bulkstat( | |
669 | xfs_mount_t *mp, | |
670 | unsigned int cmd, | |
671 | void __user *arg); | |
672 | ||
673 | STATIC int | |
674 | xfs_ioc_fsgeometry_v1( | |
675 | xfs_mount_t *mp, | |
676 | void __user *arg); | |
677 | ||
678 | STATIC int | |
679 | xfs_ioc_fsgeometry( | |
680 | xfs_mount_t *mp, | |
681 | void __user *arg); | |
682 | ||
683 | STATIC int | |
684 | xfs_ioc_xattr( | |
685 | vnode_t *vp, | |
686 | xfs_inode_t *ip, | |
687 | struct file *filp, | |
688 | unsigned int cmd, | |
689 | void __user *arg); | |
690 | ||
691 | STATIC int | |
692 | xfs_ioc_getbmap( | |
693 | bhv_desc_t *bdp, | |
694 | struct file *filp, | |
695 | int flags, | |
696 | unsigned int cmd, | |
697 | void __user *arg); | |
698 | ||
699 | STATIC int | |
700 | xfs_ioc_getbmapx( | |
701 | bhv_desc_t *bdp, | |
702 | void __user *arg); | |
703 | ||
704 | int | |
705 | xfs_ioctl( | |
706 | bhv_desc_t *bdp, | |
707 | struct inode *inode, | |
708 | struct file *filp, | |
709 | int ioflags, | |
710 | unsigned int cmd, | |
711 | void __user *arg) | |
712 | { | |
713 | int error; | |
714 | vnode_t *vp; | |
715 | xfs_inode_t *ip; | |
716 | xfs_mount_t *mp; | |
717 | ||
ec86dc02 | 718 | vp = vn_from_inode(inode); |
1da177e4 LT |
719 | |
720 | vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address); | |
721 | ||
722 | ip = XFS_BHVTOI(bdp); | |
723 | mp = ip->i_mount; | |
724 | ||
725 | switch (cmd) { | |
726 | ||
727 | case XFS_IOC_ALLOCSP: | |
728 | case XFS_IOC_FREESP: | |
729 | case XFS_IOC_RESVSP: | |
730 | case XFS_IOC_UNRESVSP: | |
731 | case XFS_IOC_ALLOCSP64: | |
732 | case XFS_IOC_FREESP64: | |
733 | case XFS_IOC_RESVSP64: | |
734 | case XFS_IOC_UNRESVSP64: | |
735 | /* | |
736 | * Only allow the sys admin to reserve space unless | |
737 | * unwritten extents are enabled. | |
738 | */ | |
739 | if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) && | |
740 | !capable(CAP_SYS_ADMIN)) | |
741 | return -EPERM; | |
742 | ||
743 | return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg); | |
744 | ||
745 | case XFS_IOC_DIOINFO: { | |
746 | struct dioattr da; | |
747 | xfs_buftarg_t *target = | |
748 | (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? | |
749 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
750 | ||
ce8e922c | 751 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; |
0d14824c | 752 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1da177e4 LT |
753 | |
754 | if (copy_to_user(arg, &da, sizeof(da))) | |
755 | return -XFS_ERROR(EFAULT); | |
756 | return 0; | |
757 | } | |
758 | ||
759 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
760 | case XFS_IOC_FSBULKSTAT: | |
761 | case XFS_IOC_FSINUMBERS: | |
762 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
763 | ||
764 | case XFS_IOC_FSGEOMETRY_V1: | |
765 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
766 | ||
767 | case XFS_IOC_FSGEOMETRY: | |
768 | return xfs_ioc_fsgeometry(mp, arg); | |
769 | ||
770 | case XFS_IOC_GETVERSION: | |
771 | case XFS_IOC_GETXFLAGS: | |
772 | case XFS_IOC_SETXFLAGS: | |
773 | case XFS_IOC_FSGETXATTR: | |
774 | case XFS_IOC_FSSETXATTR: | |
775 | case XFS_IOC_FSGETXATTRA: | |
776 | return xfs_ioc_xattr(vp, ip, filp, cmd, arg); | |
777 | ||
778 | case XFS_IOC_FSSETDM: { | |
779 | struct fsdmidata dmi; | |
780 | ||
781 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
782 | return -XFS_ERROR(EFAULT); | |
783 | ||
784 | error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate, | |
785 | NULL); | |
786 | return -error; | |
787 | } | |
788 | ||
789 | case XFS_IOC_GETBMAP: | |
790 | case XFS_IOC_GETBMAPA: | |
791 | return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg); | |
792 | ||
793 | case XFS_IOC_GETBMAPX: | |
794 | return xfs_ioc_getbmapx(bdp, arg); | |
795 | ||
796 | case XFS_IOC_FD_TO_HANDLE: | |
797 | case XFS_IOC_PATH_TO_HANDLE: | |
798 | case XFS_IOC_PATH_TO_FSHANDLE: | |
799 | return xfs_find_handle(cmd, arg); | |
800 | ||
801 | case XFS_IOC_OPEN_BY_HANDLE: | |
802 | return xfs_open_by_handle(mp, arg, filp, inode); | |
803 | ||
804 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
805 | return xfs_fssetdm_by_handle(mp, arg, filp, inode); | |
806 | ||
807 | case XFS_IOC_READLINK_BY_HANDLE: | |
808 | return xfs_readlink_by_handle(mp, arg, filp, inode); | |
809 | ||
810 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
811 | return xfs_attrlist_by_handle(mp, arg, filp, inode); | |
812 | ||
813 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
814 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); | |
815 | ||
816 | case XFS_IOC_SWAPEXT: { | |
817 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
818 | return -error; | |
819 | } | |
820 | ||
821 | case XFS_IOC_FSCOUNTS: { | |
822 | xfs_fsop_counts_t out; | |
823 | ||
824 | error = xfs_fs_counts(mp, &out); | |
825 | if (error) | |
826 | return -error; | |
827 | ||
828 | if (copy_to_user(arg, &out, sizeof(out))) | |
829 | return -XFS_ERROR(EFAULT); | |
830 | return 0; | |
831 | } | |
832 | ||
833 | case XFS_IOC_SET_RESBLKS: { | |
834 | xfs_fsop_resblks_t inout; | |
835 | __uint64_t in; | |
836 | ||
837 | if (!capable(CAP_SYS_ADMIN)) | |
838 | return -EPERM; | |
839 | ||
840 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
841 | return -XFS_ERROR(EFAULT); | |
842 | ||
843 | /* input parameter is passed in resblks field of structure */ | |
844 | in = inout.resblks; | |
845 | error = xfs_reserve_blocks(mp, &in, &inout); | |
846 | if (error) | |
847 | return -error; | |
848 | ||
849 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
850 | return -XFS_ERROR(EFAULT); | |
851 | return 0; | |
852 | } | |
853 | ||
854 | case XFS_IOC_GET_RESBLKS: { | |
855 | xfs_fsop_resblks_t out; | |
856 | ||
857 | if (!capable(CAP_SYS_ADMIN)) | |
858 | return -EPERM; | |
859 | ||
860 | error = xfs_reserve_blocks(mp, NULL, &out); | |
861 | if (error) | |
862 | return -error; | |
863 | ||
864 | if (copy_to_user(arg, &out, sizeof(out))) | |
865 | return -XFS_ERROR(EFAULT); | |
866 | ||
867 | return 0; | |
868 | } | |
869 | ||
870 | case XFS_IOC_FSGROWFSDATA: { | |
871 | xfs_growfs_data_t in; | |
872 | ||
873 | if (!capable(CAP_SYS_ADMIN)) | |
874 | return -EPERM; | |
875 | ||
876 | if (copy_from_user(&in, arg, sizeof(in))) | |
877 | return -XFS_ERROR(EFAULT); | |
878 | ||
879 | error = xfs_growfs_data(mp, &in); | |
880 | return -error; | |
881 | } | |
882 | ||
883 | case XFS_IOC_FSGROWFSLOG: { | |
884 | xfs_growfs_log_t in; | |
885 | ||
886 | if (!capable(CAP_SYS_ADMIN)) | |
887 | return -EPERM; | |
888 | ||
889 | if (copy_from_user(&in, arg, sizeof(in))) | |
890 | return -XFS_ERROR(EFAULT); | |
891 | ||
892 | error = xfs_growfs_log(mp, &in); | |
893 | return -error; | |
894 | } | |
895 | ||
896 | case XFS_IOC_FSGROWFSRT: { | |
897 | xfs_growfs_rt_t in; | |
898 | ||
899 | if (!capable(CAP_SYS_ADMIN)) | |
900 | return -EPERM; | |
901 | ||
902 | if (copy_from_user(&in, arg, sizeof(in))) | |
903 | return -XFS_ERROR(EFAULT); | |
904 | ||
905 | error = xfs_growfs_rt(mp, &in); | |
906 | return -error; | |
907 | } | |
908 | ||
909 | case XFS_IOC_FREEZE: | |
910 | if (!capable(CAP_SYS_ADMIN)) | |
911 | return -EPERM; | |
912 | ||
913 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
914 | freeze_bdev(inode->i_sb->s_bdev); | |
915 | return 0; | |
916 | ||
917 | case XFS_IOC_THAW: | |
918 | if (!capable(CAP_SYS_ADMIN)) | |
919 | return -EPERM; | |
920 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
921 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
922 | return 0; | |
923 | ||
924 | case XFS_IOC_GOINGDOWN: { | |
925 | __uint32_t in; | |
926 | ||
927 | if (!capable(CAP_SYS_ADMIN)) | |
928 | return -EPERM; | |
929 | ||
930 | if (get_user(in, (__uint32_t __user *)arg)) | |
931 | return -XFS_ERROR(EFAULT); | |
932 | ||
933 | error = xfs_fs_goingdown(mp, in); | |
934 | return -error; | |
935 | } | |
936 | ||
937 | case XFS_IOC_ERROR_INJECTION: { | |
938 | xfs_error_injection_t in; | |
939 | ||
940 | if (!capable(CAP_SYS_ADMIN)) | |
941 | return -EPERM; | |
942 | ||
943 | if (copy_from_user(&in, arg, sizeof(in))) | |
944 | return -XFS_ERROR(EFAULT); | |
945 | ||
946 | error = xfs_errortag_add(in.errtag, mp); | |
947 | return -error; | |
948 | } | |
949 | ||
950 | case XFS_IOC_ERROR_CLEARALL: | |
951 | if (!capable(CAP_SYS_ADMIN)) | |
952 | return -EPERM; | |
953 | ||
954 | error = xfs_errortag_clearall(mp); | |
955 | return -error; | |
956 | ||
957 | default: | |
958 | return -ENOTTY; | |
959 | } | |
960 | } | |
961 | ||
962 | STATIC int | |
963 | xfs_ioc_space( | |
964 | bhv_desc_t *bdp, | |
965 | vnode_t *vp, | |
966 | struct file *filp, | |
967 | int ioflags, | |
968 | unsigned int cmd, | |
969 | void __user *arg) | |
970 | { | |
971 | xfs_flock64_t bf; | |
972 | int attr_flags = 0; | |
973 | int error; | |
974 | ||
975 | if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND)) | |
976 | return -XFS_ERROR(EPERM); | |
977 | ||
ad4a8ac4 | 978 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
979 | return -XFS_ERROR(EBADF); |
980 | ||
0432dab2 | 981 | if (!VN_ISREG(vp)) |
1da177e4 LT |
982 | return -XFS_ERROR(EINVAL); |
983 | ||
984 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
985 | return -XFS_ERROR(EFAULT); | |
986 | ||
987 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
988 | attr_flags |= ATTR_NONBLOCK; | |
989 | if (ioflags & IO_INVIS) | |
990 | attr_flags |= ATTR_DMI; | |
991 | ||
992 | error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos, | |
993 | NULL, attr_flags); | |
994 | return -error; | |
995 | } | |
996 | ||
997 | STATIC int | |
998 | xfs_ioc_bulkstat( | |
999 | xfs_mount_t *mp, | |
1000 | unsigned int cmd, | |
1001 | void __user *arg) | |
1002 | { | |
1003 | xfs_fsop_bulkreq_t bulkreq; | |
1004 | int count; /* # of records returned */ | |
1005 | xfs_ino_t inlast; /* last inode number */ | |
1006 | int done; | |
1007 | int error; | |
1008 | ||
1009 | /* done = 1 if there are more stats to get and if bulkstat */ | |
1010 | /* should be called again (unused here, but used in dmapi) */ | |
1011 | ||
1012 | if (!capable(CAP_SYS_ADMIN)) | |
1013 | return -EPERM; | |
1014 | ||
1015 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1016 | return -XFS_ERROR(EIO); | |
1017 | ||
1018 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
1019 | return -XFS_ERROR(EFAULT); | |
1020 | ||
1021 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
1022 | return -XFS_ERROR(EFAULT); | |
1023 | ||
1024 | if ((count = bulkreq.icount) <= 0) | |
1025 | return -XFS_ERROR(EINVAL); | |
1026 | ||
1027 | if (cmd == XFS_IOC_FSINUMBERS) | |
1028 | error = xfs_inumbers(mp, &inlast, &count, | |
1029 | bulkreq.ubuffer); | |
1030 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) | |
1031 | error = xfs_bulkstat_single(mp, &inlast, | |
1032 | bulkreq.ubuffer, &done); | |
1033 | else { /* XFS_IOC_FSBULKSTAT */ | |
1034 | if (count == 1 && inlast != 0) { | |
1035 | inlast++; | |
1036 | error = xfs_bulkstat_single(mp, &inlast, | |
1037 | bulkreq.ubuffer, &done); | |
1038 | } else { | |
1039 | error = xfs_bulkstat(mp, &inlast, &count, | |
1040 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
1041 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
1042 | BULKSTAT_FG_QUICK, &done); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | if (error) | |
1047 | return -error; | |
1048 | ||
1049 | if (bulkreq.ocount != NULL) { | |
1050 | if (copy_to_user(bulkreq.lastip, &inlast, | |
1051 | sizeof(xfs_ino_t))) | |
1052 | return -XFS_ERROR(EFAULT); | |
1053 | ||
1054 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
1055 | return -XFS_ERROR(EFAULT); | |
1056 | } | |
1057 | ||
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | STATIC int | |
1062 | xfs_ioc_fsgeometry_v1( | |
1063 | xfs_mount_t *mp, | |
1064 | void __user *arg) | |
1065 | { | |
1066 | xfs_fsop_geom_v1_t fsgeo; | |
1067 | int error; | |
1068 | ||
1069 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
1070 | if (error) | |
1071 | return -error; | |
1072 | ||
1073 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1074 | return -XFS_ERROR(EFAULT); | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | STATIC int | |
1079 | xfs_ioc_fsgeometry( | |
1080 | xfs_mount_t *mp, | |
1081 | void __user *arg) | |
1082 | { | |
1083 | xfs_fsop_geom_t fsgeo; | |
1084 | int error; | |
1085 | ||
1086 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
1087 | if (error) | |
1088 | return -error; | |
1089 | ||
1090 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1091 | return -XFS_ERROR(EFAULT); | |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * Linux extended inode flags interface. | |
1097 | */ | |
1098 | #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */ | |
1099 | #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */ | |
1100 | #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */ | |
1101 | #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */ | |
1102 | #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */ | |
1103 | ||
1104 | STATIC unsigned int | |
1105 | xfs_merge_ioc_xflags( | |
1106 | unsigned int flags, | |
1107 | unsigned int start) | |
1108 | { | |
1109 | unsigned int xflags = start; | |
1110 | ||
1111 | if (flags & LINUX_XFLAG_IMMUTABLE) | |
1112 | xflags |= XFS_XFLAG_IMMUTABLE; | |
1113 | else | |
1114 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
1115 | if (flags & LINUX_XFLAG_APPEND) | |
1116 | xflags |= XFS_XFLAG_APPEND; | |
1117 | else | |
1118 | xflags &= ~XFS_XFLAG_APPEND; | |
1119 | if (flags & LINUX_XFLAG_SYNC) | |
1120 | xflags |= XFS_XFLAG_SYNC; | |
1121 | else | |
1122 | xflags &= ~XFS_XFLAG_SYNC; | |
1123 | if (flags & LINUX_XFLAG_NOATIME) | |
1124 | xflags |= XFS_XFLAG_NOATIME; | |
1125 | else | |
1126 | xflags &= ~XFS_XFLAG_NOATIME; | |
1127 | if (flags & LINUX_XFLAG_NODUMP) | |
1128 | xflags |= XFS_XFLAG_NODUMP; | |
1129 | else | |
1130 | xflags &= ~XFS_XFLAG_NODUMP; | |
1131 | ||
1132 | return xflags; | |
1133 | } | |
1134 | ||
1135 | STATIC unsigned int | |
1136 | xfs_di2lxflags( | |
1137 | __uint16_t di_flags) | |
1138 | { | |
1139 | unsigned int flags = 0; | |
1140 | ||
1141 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
1142 | flags |= LINUX_XFLAG_IMMUTABLE; | |
1143 | if (di_flags & XFS_DIFLAG_APPEND) | |
1144 | flags |= LINUX_XFLAG_APPEND; | |
1145 | if (di_flags & XFS_DIFLAG_SYNC) | |
1146 | flags |= LINUX_XFLAG_SYNC; | |
1147 | if (di_flags & XFS_DIFLAG_NOATIME) | |
1148 | flags |= LINUX_XFLAG_NOATIME; | |
1149 | if (di_flags & XFS_DIFLAG_NODUMP) | |
1150 | flags |= LINUX_XFLAG_NODUMP; | |
1151 | return flags; | |
1152 | } | |
1153 | ||
1154 | STATIC int | |
1155 | xfs_ioc_xattr( | |
1156 | vnode_t *vp, | |
1157 | xfs_inode_t *ip, | |
1158 | struct file *filp, | |
1159 | unsigned int cmd, | |
1160 | void __user *arg) | |
1161 | { | |
1162 | struct fsxattr fa; | |
220b5284 NS |
1163 | struct vattr *vattr; |
1164 | int error = 0; | |
1da177e4 LT |
1165 | int attr_flags; |
1166 | unsigned int flags; | |
1167 | ||
220b5284 NS |
1168 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
1169 | if (unlikely(!vattr)) | |
1170 | return -ENOMEM; | |
1171 | ||
1da177e4 LT |
1172 | switch (cmd) { |
1173 | case XFS_IOC_FSGETXATTR: { | |
220b5284 NS |
1174 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1175 | XFS_AT_NEXTENTS | XFS_AT_PROJID; | |
1176 | VOP_GETATTR(vp, vattr, 0, NULL, error); | |
1177 | if (unlikely(error)) { | |
1178 | error = -error; | |
1179 | break; | |
1180 | } | |
1da177e4 | 1181 | |
220b5284 NS |
1182 | fa.fsx_xflags = vattr->va_xflags; |
1183 | fa.fsx_extsize = vattr->va_extsize; | |
1184 | fa.fsx_nextents = vattr->va_nextents; | |
1185 | fa.fsx_projid = vattr->va_projid; | |
1da177e4 | 1186 | |
220b5284 NS |
1187 | if (copy_to_user(arg, &fa, sizeof(fa))) { |
1188 | error = -EFAULT; | |
1189 | break; | |
1190 | } | |
1191 | break; | |
1da177e4 LT |
1192 | } |
1193 | ||
1194 | case XFS_IOC_FSSETXATTR: { | |
220b5284 NS |
1195 | if (copy_from_user(&fa, arg, sizeof(fa))) { |
1196 | error = -EFAULT; | |
1197 | break; | |
1198 | } | |
1da177e4 LT |
1199 | |
1200 | attr_flags = 0; | |
1201 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1202 | attr_flags |= ATTR_NONBLOCK; | |
1203 | ||
220b5284 NS |
1204 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
1205 | vattr->va_xflags = fa.fsx_xflags; | |
1206 | vattr->va_extsize = fa.fsx_extsize; | |
1207 | vattr->va_projid = fa.fsx_projid; | |
1da177e4 | 1208 | |
220b5284 NS |
1209 | VOP_SETATTR(vp, vattr, attr_flags, NULL, error); |
1210 | if (likely(!error)) | |
1211 | __vn_revalidate(vp, vattr); /* update flags */ | |
1212 | error = -error; | |
1213 | break; | |
1da177e4 LT |
1214 | } |
1215 | ||
1216 | case XFS_IOC_FSGETXATTRA: { | |
220b5284 NS |
1217 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1218 | XFS_AT_ANEXTENTS | XFS_AT_PROJID; | |
1219 | VOP_GETATTR(vp, vattr, 0, NULL, error); | |
1220 | if (unlikely(error)) { | |
1221 | error = -error; | |
1222 | break; | |
1223 | } | |
1da177e4 | 1224 | |
220b5284 NS |
1225 | fa.fsx_xflags = vattr->va_xflags; |
1226 | fa.fsx_extsize = vattr->va_extsize; | |
1227 | fa.fsx_nextents = vattr->va_anextents; | |
1228 | fa.fsx_projid = vattr->va_projid; | |
1da177e4 | 1229 | |
220b5284 NS |
1230 | if (copy_to_user(arg, &fa, sizeof(fa))) { |
1231 | error = -EFAULT; | |
1232 | break; | |
1233 | } | |
1234 | break; | |
1da177e4 LT |
1235 | } |
1236 | ||
1237 | case XFS_IOC_GETXFLAGS: { | |
1238 | flags = xfs_di2lxflags(ip->i_d.di_flags); | |
1239 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
220b5284 NS |
1240 | error = -EFAULT; |
1241 | break; | |
1da177e4 LT |
1242 | } |
1243 | ||
1244 | case XFS_IOC_SETXFLAGS: { | |
220b5284 NS |
1245 | if (copy_from_user(&flags, arg, sizeof(flags))) { |
1246 | error = -EFAULT; | |
1247 | break; | |
1248 | } | |
1da177e4 LT |
1249 | |
1250 | if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \ | |
1251 | LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \ | |
220b5284 NS |
1252 | LINUX_XFLAG_SYNC)) { |
1253 | error = -EOPNOTSUPP; | |
1254 | break; | |
1255 | } | |
1da177e4 LT |
1256 | |
1257 | attr_flags = 0; | |
1258 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1259 | attr_flags |= ATTR_NONBLOCK; | |
1260 | ||
220b5284 NS |
1261 | vattr->va_mask = XFS_AT_XFLAGS; |
1262 | vattr->va_xflags = xfs_merge_ioc_xflags(flags, | |
1263 | xfs_ip2xflags(ip)); | |
1da177e4 | 1264 | |
220b5284 NS |
1265 | VOP_SETATTR(vp, vattr, attr_flags, NULL, error); |
1266 | if (likely(!error)) | |
1267 | __vn_revalidate(vp, vattr); /* update flags */ | |
1268 | error = -error; | |
1269 | break; | |
1da177e4 LT |
1270 | } |
1271 | ||
1272 | case XFS_IOC_GETVERSION: { | |
ec86dc02 | 1273 | flags = vn_to_inode(vp)->i_generation; |
1da177e4 | 1274 | if (copy_to_user(arg, &flags, sizeof(flags))) |
220b5284 NS |
1275 | error = -EFAULT; |
1276 | break; | |
1da177e4 LT |
1277 | } |
1278 | ||
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( | |
1290 | bhv_desc_t *bdp, | |
1291 | struct file *filp, | |
1292 | int ioflags, | |
1293 | unsigned int cmd, | |
1294 | void __user *arg) | |
1295 | { | |
1296 | struct getbmap bm; | |
1297 | int iflags; | |
1298 | int error; | |
1299 | ||
1300 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
1301 | return -XFS_ERROR(EFAULT); | |
1302 | ||
1303 | if (bm.bmv_count < 2) | |
1304 | return -XFS_ERROR(EINVAL); | |
1305 | ||
1306 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
1307 | if (ioflags & IO_INVIS) | |
1308 | iflags |= BMV_IF_NO_DMAPI_READ; | |
1309 | ||
1310 | error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags); | |
1311 | if (error) | |
1312 | return -error; | |
1313 | ||
1314 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
1315 | return -XFS_ERROR(EFAULT); | |
1316 | return 0; | |
1317 | } | |
1318 | ||
1319 | STATIC int | |
1320 | xfs_ioc_getbmapx( | |
1321 | bhv_desc_t *bdp, | |
1322 | void __user *arg) | |
1323 | { | |
1324 | struct getbmapx bmx; | |
1325 | struct getbmap bm; | |
1326 | int iflags; | |
1327 | int error; | |
1328 | ||
1329 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1330 | return -XFS_ERROR(EFAULT); | |
1331 | ||
1332 | if (bmx.bmv_count < 2) | |
1333 | return -XFS_ERROR(EINVAL); | |
1334 | ||
1335 | /* | |
1336 | * Map input getbmapx structure to a getbmap | |
1337 | * structure for xfs_getbmap. | |
1338 | */ | |
1339 | GETBMAP_CONVERT(bmx, bm); | |
1340 | ||
1341 | iflags = bmx.bmv_iflags; | |
1342 | ||
1343 | if (iflags & (~BMV_IF_VALID)) | |
1344 | return -XFS_ERROR(EINVAL); | |
1345 | ||
1346 | iflags |= BMV_IF_EXTENDED; | |
1347 | ||
1348 | error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags); | |
1349 | if (error) | |
1350 | return -error; | |
1351 | ||
1352 | GETBMAP_CONVERT(bm, bmx); | |
1353 | ||
1354 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1355 | return -XFS_ERROR(EFAULT); | |
1356 | ||
1357 | return 0; | |
1358 | } |