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" | |
44 | #include "xfs_cap.h" | |
45 | #include "xfs_mac.h" | |
46 | #include "xfs_attr.h" | |
a844f451 | 47 | #include "xfs_bmap.h" |
1da177e4 LT |
48 | #include "xfs_buf_item.h" |
49 | #include "xfs_utils.h" | |
50 | #include "xfs_dfrag.h" | |
51 | #include "xfs_fsops.h" | |
52 | ||
16f7e0fe | 53 | #include <linux/capability.h> |
1da177e4 LT |
54 | #include <linux/dcache.h> |
55 | #include <linux/mount.h> | |
56 | #include <linux/namei.h> | |
57 | #include <linux/pagemap.h> | |
58 | ||
59 | /* | |
60 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
61 | * a file or fs handle. | |
62 | * | |
63 | * XFS_IOC_PATH_TO_FSHANDLE | |
64 | * returns fs handle for a mount point or path within that mount point | |
65 | * XFS_IOC_FD_TO_HANDLE | |
66 | * returns full handle for a FD opened in user space | |
67 | * XFS_IOC_PATH_TO_HANDLE | |
68 | * returns full handle for a path | |
69 | */ | |
70 | STATIC int | |
71 | xfs_find_handle( | |
72 | unsigned int cmd, | |
73 | void __user *arg) | |
74 | { | |
75 | int hsize; | |
76 | xfs_handle_t handle; | |
77 | xfs_fsop_handlereq_t hreq; | |
78 | struct inode *inode; | |
67fcaa73 | 79 | bhv_vnode_t *vp; |
1da177e4 LT |
80 | |
81 | if (copy_from_user(&hreq, arg, sizeof(hreq))) | |
82 | return -XFS_ERROR(EFAULT); | |
83 | ||
84 | memset((char *)&handle, 0, sizeof(handle)); | |
85 | ||
86 | switch (cmd) { | |
87 | case XFS_IOC_PATH_TO_FSHANDLE: | |
88 | case XFS_IOC_PATH_TO_HANDLE: { | |
89 | struct nameidata nd; | |
90 | int error; | |
91 | ||
92 | error = user_path_walk_link((const char __user *)hreq.path, &nd); | |
93 | if (error) | |
94 | return error; | |
95 | ||
96 | ASSERT(nd.dentry); | |
97 | ASSERT(nd.dentry->d_inode); | |
98 | inode = igrab(nd.dentry->d_inode); | |
99 | path_release(&nd); | |
100 | break; | |
101 | } | |
102 | ||
103 | case XFS_IOC_FD_TO_HANDLE: { | |
104 | struct file *file; | |
105 | ||
106 | file = fget(hreq.fd); | |
107 | if (!file) | |
108 | return -EBADF; | |
109 | ||
110 | ASSERT(file->f_dentry); | |
111 | ASSERT(file->f_dentry->d_inode); | |
112 | inode = igrab(file->f_dentry->d_inode); | |
113 | fput(file); | |
114 | break; | |
115 | } | |
116 | ||
117 | default: | |
118 | ASSERT(0); | |
119 | return -XFS_ERROR(EINVAL); | |
120 | } | |
121 | ||
122 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
123 | /* we're not in XFS anymore, Toto */ | |
124 | iput(inode); | |
125 | return -XFS_ERROR(EINVAL); | |
126 | } | |
127 | ||
0432dab2 CH |
128 | switch (inode->i_mode & S_IFMT) { |
129 | case S_IFREG: | |
130 | case S_IFDIR: | |
131 | case S_IFLNK: | |
132 | break; | |
133 | default: | |
1da177e4 LT |
134 | iput(inode); |
135 | return -XFS_ERROR(EBADF); | |
136 | } | |
137 | ||
0432dab2 | 138 | /* we need the vnode */ |
ec86dc02 | 139 | vp = vn_from_inode(inode); |
0432dab2 | 140 | |
1da177e4 LT |
141 | /* now we can grab the fsid */ |
142 | memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t)); | |
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 */ | |
155 | handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) - | |
156 | sizeof(handle.ha_fid.xfs_fid_len); | |
157 | handle.ha_fid.xfs_fid_pad = 0; | |
158 | handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen; | |
159 | handle.ha_fid.xfs_fid_ino = ip->i_ino; | |
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)) { | |
225 | if (handlep->ha_fid.xfs_fid_len != | |
226 | (hlen - sizeof(handlep->ha_fsid) | |
227 | - sizeof(handlep->ha_fid.xfs_fid_len)) | |
228 | || handlep->ha_fid.xfs_fid_pad) | |
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; | |
236 | if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) { | |
237 | ino = xfid->xfs_fid_ino; | |
238 | igen = xfid->xfs_fid_gen; | |
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. */ | |
336 | mntget(parfilp->f_vfsmnt); | |
337 | ||
338 | /* Create file pointer. */ | |
339 | filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags); | |
340 | if (IS_ERR(filp)) { | |
341 | put_unused_fd(new_fd); | |
342 | return -XFS_ERROR(-PTR_ERR(filp)); | |
343 | } | |
344 | if (inode->i_mode & S_IFREG) | |
3562fd45 | 345 | filp->f_op = &xfs_invis_file_operations; |
1da177e4 LT |
346 | |
347 | fd_install(new_fd, filp); | |
348 | return new_fd; | |
349 | } | |
350 | ||
351 | STATIC int | |
352 | xfs_readlink_by_handle( | |
353 | xfs_mount_t *mp, | |
354 | void __user *arg, | |
355 | struct file *parfilp, | |
356 | struct inode *parinode) | |
357 | { | |
358 | int error; | |
359 | struct iovec aiov; | |
360 | struct uio auio; | |
361 | struct inode *inode; | |
362 | xfs_fsop_handlereq_t hreq; | |
67fcaa73 | 363 | bhv_vnode_t *vp; |
1da177e4 LT |
364 | __u32 olen; |
365 | ||
366 | if (!capable(CAP_SYS_ADMIN)) | |
367 | return -XFS_ERROR(EPERM); | |
368 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
369 | return -XFS_ERROR(EFAULT); | |
370 | ||
371 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
372 | if (error) | |
373 | return -error; | |
374 | ||
375 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 376 | if (!S_ISLNK(inode->i_mode)) { |
1da177e4 LT |
377 | VN_RELE(vp); |
378 | return -XFS_ERROR(EINVAL); | |
379 | } | |
380 | ||
381 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
382 | VN_RELE(vp); | |
383 | return -XFS_ERROR(EFAULT); | |
384 | } | |
385 | aiov.iov_len = olen; | |
386 | aiov.iov_base = hreq.ohandle; | |
387 | ||
388 | auio.uio_iov = &aiov; | |
389 | auio.uio_iovcnt = 1; | |
390 | auio.uio_offset = 0; | |
391 | auio.uio_segflg = UIO_USERSPACE; | |
392 | auio.uio_resid = olen; | |
393 | ||
67fcaa73 | 394 | error = bhv_vop_readlink(vp, &auio, IO_INVIS, NULL); |
1da177e4 | 395 | VN_RELE(vp); |
67fcaa73 NS |
396 | if (error) |
397 | return -error; | |
398 | ||
1da177e4 LT |
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; | |
67fcaa73 | 414 | bhv_vnode_t *vp; |
1da177e4 LT |
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; | |
67fcaa73 | 455 | bhv_vnode_t *vp; |
1da177e4 LT |
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; | |
67fcaa73 NS |
475 | error = bhv_vop_attr_list(vp, kbuf, al_hreq.buflen, al_hreq.flags, |
476 | cursor, NULL); | |
1da177e4 LT |
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( | |
67fcaa73 | 493 | bhv_vnode_t *vp, |
1da177e4 LT |
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 | ||
67fcaa73 | 508 | error = bhv_vop_attr_get(vp, name, kbuf, len, flags, NULL); |
1da177e4 LT |
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( | |
67fcaa73 | 522 | bhv_vnode_t *vp, |
1da177e4 LT |
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 | ||
67fcaa73 | 545 | error = bhv_vop_attr_set(vp, name, kbuf, len, flags, NULL); |
1da177e4 LT |
546 | |
547 | out_kfree: | |
548 | kfree(kbuf); | |
549 | return error; | |
550 | } | |
551 | ||
552 | STATIC int | |
553 | xfs_attrmulti_attr_remove( | |
67fcaa73 | 554 | bhv_vnode_t *vp, |
1da177e4 LT |
555 | char *name, |
556 | __uint32_t flags) | |
557 | { | |
3542c6e1 CH |
558 | if (IS_RDONLY(&vp->v_inode)) |
559 | return -EROFS; | |
1da177e4 LT |
560 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
561 | return EPERM; | |
67fcaa73 | 562 | return bhv_vop_attr_remove(vp, name, flags, NULL); |
1da177e4 LT |
563 | } |
564 | ||
565 | STATIC int | |
566 | xfs_attrmulti_by_handle( | |
567 | xfs_mount_t *mp, | |
568 | void __user *arg, | |
569 | struct file *parfilp, | |
570 | struct inode *parinode) | |
571 | { | |
572 | int error; | |
573 | xfs_attr_multiop_t *ops; | |
574 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
575 | struct inode *inode; | |
67fcaa73 | 576 | bhv_vnode_t *vp; |
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 | ||
585 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode); | |
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: | |
619 | ops[i].am_error = xfs_attrmulti_attr_get(vp, | |
620 | attr_name, ops[i].am_attrvalue, | |
621 | &ops[i].am_length, ops[i].am_flags); | |
622 | break; | |
623 | case ATTR_OP_SET: | |
624 | ops[i].am_error = xfs_attrmulti_attr_set(vp, | |
625 | attr_name, ops[i].am_attrvalue, | |
626 | ops[i].am_length, ops[i].am_flags); | |
627 | break; | |
628 | case ATTR_OP_REMOVE: | |
629 | ops[i].am_error = xfs_attrmulti_attr_remove(vp, | |
630 | attr_name, ops[i].am_flags); | |
631 | break; | |
632 | default: | |
633 | ops[i].am_error = EINVAL; | |
634 | } | |
635 | } | |
636 | ||
637 | if (copy_to_user(am_hreq.ops, ops, size)) | |
638 | error = XFS_ERROR(EFAULT); | |
639 | ||
640 | kfree(attr_name); | |
641 | out_kfree_ops: | |
642 | kfree(ops); | |
643 | out_vn_rele: | |
644 | VN_RELE(vp); | |
645 | out: | |
646 | return -error; | |
647 | } | |
648 | ||
649 | /* prototypes for a few of the stack-hungry cases that have | |
650 | * their own functions. Functions are defined after their use | |
651 | * so gcc doesn't get fancy and inline them with -03 */ | |
652 | ||
653 | STATIC int | |
654 | xfs_ioc_space( | |
655 | bhv_desc_t *bdp, | |
f37ea149 | 656 | struct inode *inode, |
1da177e4 LT |
657 | struct file *filp, |
658 | int flags, | |
659 | unsigned int cmd, | |
660 | void __user *arg); | |
661 | ||
662 | STATIC int | |
663 | xfs_ioc_bulkstat( | |
664 | xfs_mount_t *mp, | |
665 | unsigned int cmd, | |
666 | void __user *arg); | |
667 | ||
668 | STATIC int | |
669 | xfs_ioc_fsgeometry_v1( | |
670 | xfs_mount_t *mp, | |
671 | void __user *arg); | |
672 | ||
673 | STATIC int | |
674 | xfs_ioc_fsgeometry( | |
675 | xfs_mount_t *mp, | |
676 | void __user *arg); | |
677 | ||
678 | STATIC int | |
679 | xfs_ioc_xattr( | |
67fcaa73 | 680 | bhv_vnode_t *vp, |
1da177e4 LT |
681 | xfs_inode_t *ip, |
682 | struct file *filp, | |
683 | unsigned int cmd, | |
684 | void __user *arg); | |
685 | ||
686 | STATIC int | |
687 | xfs_ioc_getbmap( | |
688 | bhv_desc_t *bdp, | |
689 | struct file *filp, | |
690 | int flags, | |
691 | unsigned int cmd, | |
692 | void __user *arg); | |
693 | ||
694 | STATIC int | |
695 | xfs_ioc_getbmapx( | |
696 | bhv_desc_t *bdp, | |
697 | void __user *arg); | |
698 | ||
699 | int | |
700 | xfs_ioctl( | |
701 | bhv_desc_t *bdp, | |
702 | struct inode *inode, | |
703 | struct file *filp, | |
704 | int ioflags, | |
705 | unsigned int cmd, | |
706 | void __user *arg) | |
707 | { | |
708 | int error; | |
67fcaa73 | 709 | bhv_vnode_t *vp; |
1da177e4 LT |
710 | xfs_inode_t *ip; |
711 | xfs_mount_t *mp; | |
712 | ||
ec86dc02 | 713 | vp = vn_from_inode(inode); |
1da177e4 LT |
714 | |
715 | vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address); | |
716 | ||
717 | ip = XFS_BHVTOI(bdp); | |
718 | mp = ip->i_mount; | |
719 | ||
720 | switch (cmd) { | |
721 | ||
722 | case XFS_IOC_ALLOCSP: | |
723 | case XFS_IOC_FREESP: | |
724 | case XFS_IOC_RESVSP: | |
725 | case XFS_IOC_UNRESVSP: | |
726 | case XFS_IOC_ALLOCSP64: | |
727 | case XFS_IOC_FREESP64: | |
728 | case XFS_IOC_RESVSP64: | |
729 | case XFS_IOC_UNRESVSP64: | |
730 | /* | |
731 | * Only allow the sys admin to reserve space unless | |
732 | * unwritten extents are enabled. | |
733 | */ | |
734 | if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) && | |
735 | !capable(CAP_SYS_ADMIN)) | |
736 | return -EPERM; | |
737 | ||
f37ea149 | 738 | return xfs_ioc_space(bdp, inode, filp, ioflags, cmd, arg); |
1da177e4 LT |
739 | |
740 | case XFS_IOC_DIOINFO: { | |
741 | struct dioattr da; | |
742 | xfs_buftarg_t *target = | |
743 | (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? | |
744 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
745 | ||
ce8e922c | 746 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; |
0d14824c | 747 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1da177e4 LT |
748 | |
749 | if (copy_to_user(arg, &da, sizeof(da))) | |
750 | return -XFS_ERROR(EFAULT); | |
751 | return 0; | |
752 | } | |
753 | ||
754 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
755 | case XFS_IOC_FSBULKSTAT: | |
756 | case XFS_IOC_FSINUMBERS: | |
757 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
758 | ||
759 | case XFS_IOC_FSGEOMETRY_V1: | |
760 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
761 | ||
762 | case XFS_IOC_FSGEOMETRY: | |
763 | return xfs_ioc_fsgeometry(mp, arg); | |
764 | ||
765 | case XFS_IOC_GETVERSION: | |
87395deb AD |
766 | return put_user(inode->i_generation, (int __user *)arg); |
767 | ||
1da177e4 LT |
768 | case XFS_IOC_GETXFLAGS: |
769 | case XFS_IOC_SETXFLAGS: | |
770 | case XFS_IOC_FSGETXATTR: | |
771 | case XFS_IOC_FSSETXATTR: | |
772 | case XFS_IOC_FSGETXATTRA: | |
773 | return xfs_ioc_xattr(vp, ip, filp, cmd, arg); | |
774 | ||
775 | case XFS_IOC_FSSETDM: { | |
776 | struct fsdmidata dmi; | |
777 | ||
778 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
779 | return -XFS_ERROR(EFAULT); | |
780 | ||
781 | error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate, | |
782 | NULL); | |
783 | return -error; | |
784 | } | |
785 | ||
786 | case XFS_IOC_GETBMAP: | |
787 | case XFS_IOC_GETBMAPA: | |
788 | return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg); | |
789 | ||
790 | case XFS_IOC_GETBMAPX: | |
791 | return xfs_ioc_getbmapx(bdp, arg); | |
792 | ||
793 | case XFS_IOC_FD_TO_HANDLE: | |
794 | case XFS_IOC_PATH_TO_HANDLE: | |
795 | case XFS_IOC_PATH_TO_FSHANDLE: | |
796 | return xfs_find_handle(cmd, arg); | |
797 | ||
798 | case XFS_IOC_OPEN_BY_HANDLE: | |
799 | return xfs_open_by_handle(mp, arg, filp, inode); | |
800 | ||
801 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
802 | return xfs_fssetdm_by_handle(mp, arg, filp, inode); | |
803 | ||
804 | case XFS_IOC_READLINK_BY_HANDLE: | |
805 | return xfs_readlink_by_handle(mp, arg, filp, inode); | |
806 | ||
807 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
808 | return xfs_attrlist_by_handle(mp, arg, filp, inode); | |
809 | ||
810 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
811 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); | |
812 | ||
813 | case XFS_IOC_SWAPEXT: { | |
814 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
815 | return -error; | |
816 | } | |
817 | ||
818 | case XFS_IOC_FSCOUNTS: { | |
819 | xfs_fsop_counts_t out; | |
820 | ||
821 | error = xfs_fs_counts(mp, &out); | |
822 | if (error) | |
823 | return -error; | |
824 | ||
825 | if (copy_to_user(arg, &out, sizeof(out))) | |
826 | return -XFS_ERROR(EFAULT); | |
827 | return 0; | |
828 | } | |
829 | ||
830 | case XFS_IOC_SET_RESBLKS: { | |
831 | xfs_fsop_resblks_t inout; | |
832 | __uint64_t in; | |
833 | ||
834 | if (!capable(CAP_SYS_ADMIN)) | |
835 | return -EPERM; | |
836 | ||
837 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
838 | return -XFS_ERROR(EFAULT); | |
839 | ||
840 | /* input parameter is passed in resblks field of structure */ | |
841 | in = inout.resblks; | |
842 | error = xfs_reserve_blocks(mp, &in, &inout); | |
843 | if (error) | |
844 | return -error; | |
845 | ||
846 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
847 | return -XFS_ERROR(EFAULT); | |
848 | return 0; | |
849 | } | |
850 | ||
851 | case XFS_IOC_GET_RESBLKS: { | |
852 | xfs_fsop_resblks_t out; | |
853 | ||
854 | if (!capable(CAP_SYS_ADMIN)) | |
855 | return -EPERM; | |
856 | ||
857 | error = xfs_reserve_blocks(mp, NULL, &out); | |
858 | if (error) | |
859 | return -error; | |
860 | ||
861 | if (copy_to_user(arg, &out, sizeof(out))) | |
862 | return -XFS_ERROR(EFAULT); | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
867 | case XFS_IOC_FSGROWFSDATA: { | |
868 | xfs_growfs_data_t in; | |
869 | ||
870 | if (!capable(CAP_SYS_ADMIN)) | |
871 | return -EPERM; | |
872 | ||
873 | if (copy_from_user(&in, arg, sizeof(in))) | |
874 | return -XFS_ERROR(EFAULT); | |
875 | ||
876 | error = xfs_growfs_data(mp, &in); | |
877 | return -error; | |
878 | } | |
879 | ||
880 | case XFS_IOC_FSGROWFSLOG: { | |
881 | xfs_growfs_log_t in; | |
882 | ||
883 | if (!capable(CAP_SYS_ADMIN)) | |
884 | return -EPERM; | |
885 | ||
886 | if (copy_from_user(&in, arg, sizeof(in))) | |
887 | return -XFS_ERROR(EFAULT); | |
888 | ||
889 | error = xfs_growfs_log(mp, &in); | |
890 | return -error; | |
891 | } | |
892 | ||
893 | case XFS_IOC_FSGROWFSRT: { | |
894 | xfs_growfs_rt_t in; | |
895 | ||
896 | if (!capable(CAP_SYS_ADMIN)) | |
897 | return -EPERM; | |
898 | ||
899 | if (copy_from_user(&in, arg, sizeof(in))) | |
900 | return -XFS_ERROR(EFAULT); | |
901 | ||
902 | error = xfs_growfs_rt(mp, &in); | |
903 | return -error; | |
904 | } | |
905 | ||
906 | case XFS_IOC_FREEZE: | |
907 | if (!capable(CAP_SYS_ADMIN)) | |
908 | return -EPERM; | |
909 | ||
910 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
911 | freeze_bdev(inode->i_sb->s_bdev); | |
912 | return 0; | |
913 | ||
914 | case XFS_IOC_THAW: | |
915 | if (!capable(CAP_SYS_ADMIN)) | |
916 | return -EPERM; | |
917 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
918 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
919 | return 0; | |
920 | ||
921 | case XFS_IOC_GOINGDOWN: { | |
922 | __uint32_t in; | |
923 | ||
924 | if (!capable(CAP_SYS_ADMIN)) | |
925 | return -EPERM; | |
926 | ||
927 | if (get_user(in, (__uint32_t __user *)arg)) | |
928 | return -XFS_ERROR(EFAULT); | |
929 | ||
930 | error = xfs_fs_goingdown(mp, in); | |
931 | return -error; | |
932 | } | |
933 | ||
934 | case XFS_IOC_ERROR_INJECTION: { | |
935 | xfs_error_injection_t in; | |
936 | ||
937 | if (!capable(CAP_SYS_ADMIN)) | |
938 | return -EPERM; | |
939 | ||
940 | if (copy_from_user(&in, arg, sizeof(in))) | |
941 | return -XFS_ERROR(EFAULT); | |
942 | ||
943 | error = xfs_errortag_add(in.errtag, mp); | |
944 | return -error; | |
945 | } | |
946 | ||
947 | case XFS_IOC_ERROR_CLEARALL: | |
948 | if (!capable(CAP_SYS_ADMIN)) | |
949 | return -EPERM; | |
950 | ||
951 | error = xfs_errortag_clearall(mp); | |
952 | return -error; | |
953 | ||
954 | default: | |
955 | return -ENOTTY; | |
956 | } | |
957 | } | |
958 | ||
959 | STATIC int | |
960 | xfs_ioc_space( | |
961 | bhv_desc_t *bdp, | |
f37ea149 | 962 | struct inode *inode, |
1da177e4 LT |
963 | struct file *filp, |
964 | int ioflags, | |
965 | unsigned int cmd, | |
966 | void __user *arg) | |
967 | { | |
968 | xfs_flock64_t bf; | |
969 | int attr_flags = 0; | |
970 | int error; | |
971 | ||
f37ea149 | 972 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
973 | return -XFS_ERROR(EPERM); |
974 | ||
ad4a8ac4 | 975 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
976 | return -XFS_ERROR(EBADF); |
977 | ||
f37ea149 | 978 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
979 | return -XFS_ERROR(EINVAL); |
980 | ||
981 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
982 | return -XFS_ERROR(EFAULT); | |
983 | ||
984 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
985 | attr_flags |= ATTR_NONBLOCK; | |
986 | if (ioflags & IO_INVIS) | |
987 | attr_flags |= ATTR_DMI; | |
988 | ||
989 | error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos, | |
990 | NULL, attr_flags); | |
991 | return -error; | |
992 | } | |
993 | ||
994 | STATIC int | |
995 | xfs_ioc_bulkstat( | |
996 | xfs_mount_t *mp, | |
997 | unsigned int cmd, | |
998 | void __user *arg) | |
999 | { | |
1000 | xfs_fsop_bulkreq_t bulkreq; | |
1001 | int count; /* # of records returned */ | |
1002 | xfs_ino_t inlast; /* last inode number */ | |
1003 | int done; | |
1004 | int error; | |
1005 | ||
1006 | /* done = 1 if there are more stats to get and if bulkstat */ | |
1007 | /* should be called again (unused here, but used in dmapi) */ | |
1008 | ||
1009 | if (!capable(CAP_SYS_ADMIN)) | |
1010 | return -EPERM; | |
1011 | ||
1012 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1013 | return -XFS_ERROR(EIO); | |
1014 | ||
1015 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
1016 | return -XFS_ERROR(EFAULT); | |
1017 | ||
1018 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
1019 | return -XFS_ERROR(EFAULT); | |
1020 | ||
1021 | if ((count = bulkreq.icount) <= 0) | |
1022 | return -XFS_ERROR(EINVAL); | |
1023 | ||
1024 | if (cmd == XFS_IOC_FSINUMBERS) | |
1025 | error = xfs_inumbers(mp, &inlast, &count, | |
1026 | bulkreq.ubuffer); | |
1027 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) | |
1028 | error = xfs_bulkstat_single(mp, &inlast, | |
1029 | bulkreq.ubuffer, &done); | |
1030 | else { /* XFS_IOC_FSBULKSTAT */ | |
1031 | if (count == 1 && inlast != 0) { | |
1032 | inlast++; | |
1033 | error = xfs_bulkstat_single(mp, &inlast, | |
1034 | bulkreq.ubuffer, &done); | |
1035 | } else { | |
1036 | error = xfs_bulkstat(mp, &inlast, &count, | |
1037 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
1038 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
1039 | BULKSTAT_FG_QUICK, &done); | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | if (error) | |
1044 | return -error; | |
1045 | ||
1046 | if (bulkreq.ocount != NULL) { | |
1047 | if (copy_to_user(bulkreq.lastip, &inlast, | |
1048 | sizeof(xfs_ino_t))) | |
1049 | return -XFS_ERROR(EFAULT); | |
1050 | ||
1051 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
1052 | return -XFS_ERROR(EFAULT); | |
1053 | } | |
1054 | ||
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | STATIC int | |
1059 | xfs_ioc_fsgeometry_v1( | |
1060 | xfs_mount_t *mp, | |
1061 | void __user *arg) | |
1062 | { | |
1063 | xfs_fsop_geom_v1_t fsgeo; | |
1064 | int error; | |
1065 | ||
1066 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
1067 | if (error) | |
1068 | return -error; | |
1069 | ||
1070 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1071 | return -XFS_ERROR(EFAULT); | |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | STATIC int | |
1076 | xfs_ioc_fsgeometry( | |
1077 | xfs_mount_t *mp, | |
1078 | void __user *arg) | |
1079 | { | |
1080 | xfs_fsop_geom_t fsgeo; | |
1081 | int error; | |
1082 | ||
1083 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
1084 | if (error) | |
1085 | return -error; | |
1086 | ||
1087 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1088 | return -XFS_ERROR(EFAULT); | |
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * Linux extended inode flags interface. | |
1094 | */ | |
1095 | #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */ | |
1096 | #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */ | |
1097 | #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */ | |
1098 | #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */ | |
1099 | #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */ | |
1100 | ||
1101 | STATIC unsigned int | |
1102 | xfs_merge_ioc_xflags( | |
1103 | unsigned int flags, | |
1104 | unsigned int start) | |
1105 | { | |
1106 | unsigned int xflags = start; | |
1107 | ||
1108 | if (flags & LINUX_XFLAG_IMMUTABLE) | |
1109 | xflags |= XFS_XFLAG_IMMUTABLE; | |
1110 | else | |
1111 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
1112 | if (flags & LINUX_XFLAG_APPEND) | |
1113 | xflags |= XFS_XFLAG_APPEND; | |
1114 | else | |
1115 | xflags &= ~XFS_XFLAG_APPEND; | |
1116 | if (flags & LINUX_XFLAG_SYNC) | |
1117 | xflags |= XFS_XFLAG_SYNC; | |
1118 | else | |
1119 | xflags &= ~XFS_XFLAG_SYNC; | |
1120 | if (flags & LINUX_XFLAG_NOATIME) | |
1121 | xflags |= XFS_XFLAG_NOATIME; | |
1122 | else | |
1123 | xflags &= ~XFS_XFLAG_NOATIME; | |
1124 | if (flags & LINUX_XFLAG_NODUMP) | |
1125 | xflags |= XFS_XFLAG_NODUMP; | |
1126 | else | |
1127 | xflags &= ~XFS_XFLAG_NODUMP; | |
1128 | ||
1129 | return xflags; | |
1130 | } | |
1131 | ||
1132 | STATIC unsigned int | |
1133 | xfs_di2lxflags( | |
1134 | __uint16_t di_flags) | |
1135 | { | |
1136 | unsigned int flags = 0; | |
1137 | ||
1138 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
1139 | flags |= LINUX_XFLAG_IMMUTABLE; | |
1140 | if (di_flags & XFS_DIFLAG_APPEND) | |
1141 | flags |= LINUX_XFLAG_APPEND; | |
1142 | if (di_flags & XFS_DIFLAG_SYNC) | |
1143 | flags |= LINUX_XFLAG_SYNC; | |
1144 | if (di_flags & XFS_DIFLAG_NOATIME) | |
1145 | flags |= LINUX_XFLAG_NOATIME; | |
1146 | if (di_flags & XFS_DIFLAG_NODUMP) | |
1147 | flags |= LINUX_XFLAG_NODUMP; | |
1148 | return flags; | |
1149 | } | |
1150 | ||
1151 | STATIC int | |
1152 | xfs_ioc_xattr( | |
67fcaa73 | 1153 | bhv_vnode_t *vp, |
1da177e4 LT |
1154 | xfs_inode_t *ip, |
1155 | struct file *filp, | |
1156 | unsigned int cmd, | |
1157 | void __user *arg) | |
1158 | { | |
1159 | struct fsxattr fa; | |
8285fb58 | 1160 | struct bhv_vattr *vattr; |
220b5284 | 1161 | int error = 0; |
1da177e4 LT |
1162 | int attr_flags; |
1163 | unsigned int flags; | |
1164 | ||
220b5284 NS |
1165 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
1166 | if (unlikely(!vattr)) | |
1167 | return -ENOMEM; | |
1168 | ||
1da177e4 LT |
1169 | switch (cmd) { |
1170 | case XFS_IOC_FSGETXATTR: { | |
220b5284 NS |
1171 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1172 | XFS_AT_NEXTENTS | XFS_AT_PROJID; | |
67fcaa73 | 1173 | error = bhv_vop_getattr(vp, vattr, 0, NULL); |
220b5284 NS |
1174 | if (unlikely(error)) { |
1175 | error = -error; | |
1176 | break; | |
1177 | } | |
1da177e4 | 1178 | |
220b5284 NS |
1179 | fa.fsx_xflags = vattr->va_xflags; |
1180 | fa.fsx_extsize = vattr->va_extsize; | |
1181 | fa.fsx_nextents = vattr->va_nextents; | |
1182 | fa.fsx_projid = vattr->va_projid; | |
1da177e4 | 1183 | |
220b5284 NS |
1184 | if (copy_to_user(arg, &fa, sizeof(fa))) { |
1185 | error = -EFAULT; | |
1186 | break; | |
1187 | } | |
1188 | break; | |
1da177e4 LT |
1189 | } |
1190 | ||
1191 | case XFS_IOC_FSSETXATTR: { | |
220b5284 NS |
1192 | if (copy_from_user(&fa, arg, sizeof(fa))) { |
1193 | error = -EFAULT; | |
1194 | break; | |
1195 | } | |
1da177e4 LT |
1196 | |
1197 | attr_flags = 0; | |
1198 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1199 | attr_flags |= ATTR_NONBLOCK; | |
1200 | ||
220b5284 NS |
1201 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
1202 | vattr->va_xflags = fa.fsx_xflags; | |
1203 | vattr->va_extsize = fa.fsx_extsize; | |
1204 | vattr->va_projid = fa.fsx_projid; | |
1da177e4 | 1205 | |
67fcaa73 | 1206 | error = bhv_vop_setattr(vp, vattr, attr_flags, NULL); |
220b5284 NS |
1207 | if (likely(!error)) |
1208 | __vn_revalidate(vp, vattr); /* update flags */ | |
1209 | error = -error; | |
1210 | break; | |
1da177e4 LT |
1211 | } |
1212 | ||
1213 | case XFS_IOC_FSGETXATTRA: { | |
220b5284 NS |
1214 | vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1215 | XFS_AT_ANEXTENTS | XFS_AT_PROJID; | |
67fcaa73 | 1216 | error = bhv_vop_getattr(vp, vattr, 0, NULL); |
220b5284 NS |
1217 | if (unlikely(error)) { |
1218 | error = -error; | |
1219 | break; | |
1220 | } | |
1da177e4 | 1221 | |
220b5284 NS |
1222 | fa.fsx_xflags = vattr->va_xflags; |
1223 | fa.fsx_extsize = vattr->va_extsize; | |
1224 | fa.fsx_nextents = vattr->va_anextents; | |
1225 | fa.fsx_projid = vattr->va_projid; | |
1da177e4 | 1226 | |
220b5284 NS |
1227 | if (copy_to_user(arg, &fa, sizeof(fa))) { |
1228 | error = -EFAULT; | |
1229 | break; | |
1230 | } | |
1231 | break; | |
1da177e4 LT |
1232 | } |
1233 | ||
1234 | case XFS_IOC_GETXFLAGS: { | |
1235 | flags = xfs_di2lxflags(ip->i_d.di_flags); | |
1236 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
220b5284 NS |
1237 | error = -EFAULT; |
1238 | break; | |
1da177e4 LT |
1239 | } |
1240 | ||
1241 | case XFS_IOC_SETXFLAGS: { | |
220b5284 NS |
1242 | if (copy_from_user(&flags, arg, sizeof(flags))) { |
1243 | error = -EFAULT; | |
1244 | break; | |
1245 | } | |
1da177e4 LT |
1246 | |
1247 | if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \ | |
1248 | LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \ | |
220b5284 NS |
1249 | LINUX_XFLAG_SYNC)) { |
1250 | error = -EOPNOTSUPP; | |
1251 | break; | |
1252 | } | |
1da177e4 LT |
1253 | |
1254 | attr_flags = 0; | |
1255 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1256 | attr_flags |= ATTR_NONBLOCK; | |
1257 | ||
220b5284 NS |
1258 | vattr->va_mask = XFS_AT_XFLAGS; |
1259 | vattr->va_xflags = xfs_merge_ioc_xflags(flags, | |
1260 | xfs_ip2xflags(ip)); | |
1da177e4 | 1261 | |
67fcaa73 | 1262 | error = bhv_vop_setattr(vp, vattr, attr_flags, NULL); |
220b5284 NS |
1263 | if (likely(!error)) |
1264 | __vn_revalidate(vp, vattr); /* update flags */ | |
1265 | error = -error; | |
1266 | break; | |
1da177e4 LT |
1267 | } |
1268 | ||
1da177e4 | 1269 | default: |
220b5284 NS |
1270 | error = -ENOTTY; |
1271 | break; | |
1da177e4 | 1272 | } |
220b5284 NS |
1273 | |
1274 | kfree(vattr); | |
1275 | return error; | |
1da177e4 LT |
1276 | } |
1277 | ||
1278 | STATIC int | |
1279 | xfs_ioc_getbmap( | |
1280 | bhv_desc_t *bdp, | |
1281 | struct file *filp, | |
1282 | int ioflags, | |
1283 | unsigned int cmd, | |
1284 | void __user *arg) | |
1285 | { | |
1286 | struct getbmap bm; | |
1287 | int iflags; | |
1288 | int error; | |
1289 | ||
1290 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
1291 | return -XFS_ERROR(EFAULT); | |
1292 | ||
1293 | if (bm.bmv_count < 2) | |
1294 | return -XFS_ERROR(EINVAL); | |
1295 | ||
1296 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
1297 | if (ioflags & IO_INVIS) | |
1298 | iflags |= BMV_IF_NO_DMAPI_READ; | |
1299 | ||
1300 | error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags); | |
1301 | if (error) | |
1302 | return -error; | |
1303 | ||
1304 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
1305 | return -XFS_ERROR(EFAULT); | |
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | STATIC int | |
1310 | xfs_ioc_getbmapx( | |
1311 | bhv_desc_t *bdp, | |
1312 | void __user *arg) | |
1313 | { | |
1314 | struct getbmapx bmx; | |
1315 | struct getbmap bm; | |
1316 | int iflags; | |
1317 | int error; | |
1318 | ||
1319 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1320 | return -XFS_ERROR(EFAULT); | |
1321 | ||
1322 | if (bmx.bmv_count < 2) | |
1323 | return -XFS_ERROR(EINVAL); | |
1324 | ||
1325 | /* | |
1326 | * Map input getbmapx structure to a getbmap | |
1327 | * structure for xfs_getbmap. | |
1328 | */ | |
1329 | GETBMAP_CONVERT(bmx, bm); | |
1330 | ||
1331 | iflags = bmx.bmv_iflags; | |
1332 | ||
1333 | if (iflags & (~BMV_IF_VALID)) | |
1334 | return -XFS_ERROR(EINVAL); | |
1335 | ||
1336 | iflags |= BMV_IF_EXTENDED; | |
1337 | ||
1338 | error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags); | |
1339 | if (error) | |
1340 | return -error; | |
1341 | ||
1342 | GETBMAP_CONVERT(bm, bmx); | |
1343 | ||
1344 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1345 | return -XFS_ERROR(EFAULT); | |
1346 | ||
1347 | return 0; | |
1348 | } |