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 CH |
140 | /* we need the vnode */ |
141 | vp = LINVFS_GET_VP(inode); | |
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; | |
149 | bhv_desc_t *bhv; | |
150 | int lock_mode; | |
151 | ||
152 | /* need to get access to the xfs_inode to read the generation */ | |
153 | bhv = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops); | |
154 | ASSERT(bhv); | |
155 | ip = XFS_BHVTOI(bhv); | |
156 | ASSERT(ip); | |
157 | lock_mode = xfs_ilock_map_shared(ip); | |
158 | ||
159 | /* fill in fid section of handle from inode */ | |
160 | handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) - | |
161 | sizeof(handle.ha_fid.xfs_fid_len); | |
162 | handle.ha_fid.xfs_fid_pad = 0; | |
163 | handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen; | |
164 | handle.ha_fid.xfs_fid_ino = ip->i_ino; | |
165 | ||
166 | xfs_iunlock_map_shared(ip, lock_mode); | |
167 | ||
168 | hsize = XFS_HSIZE(handle); | |
169 | } | |
170 | ||
171 | /* now copy our handle into the user buffer & write out the size */ | |
172 | if (copy_to_user(hreq.ohandle, &handle, hsize) || | |
173 | copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) { | |
174 | iput(inode); | |
175 | return -XFS_ERROR(EFAULT); | |
176 | } | |
177 | ||
178 | iput(inode); | |
179 | return 0; | |
180 | } | |
181 | ||
182 | ||
183 | /* | |
184 | * Convert userspace handle data into vnode (and inode). | |
185 | * We [ab]use the fact that all the fsop_handlereq ioctl calls | |
186 | * have a data structure argument whose first component is always | |
187 | * a xfs_fsop_handlereq_t, so we can cast to and from this type. | |
188 | * This allows us to optimise the copy_from_user calls and gives | |
189 | * a handy, shared routine. | |
190 | * | |
191 | * If no error, caller must always VN_RELE the returned vp. | |
192 | */ | |
193 | STATIC int | |
194 | xfs_vget_fsop_handlereq( | |
195 | xfs_mount_t *mp, | |
196 | struct inode *parinode, /* parent inode pointer */ | |
197 | xfs_fsop_handlereq_t *hreq, | |
198 | vnode_t **vp, | |
199 | struct inode **inode) | |
200 | { | |
201 | void __user *hanp; | |
202 | size_t hlen; | |
203 | xfs_fid_t *xfid; | |
204 | xfs_handle_t *handlep; | |
205 | xfs_handle_t handle; | |
206 | xfs_inode_t *ip; | |
207 | struct inode *inodep; | |
208 | vnode_t *vpp; | |
209 | xfs_ino_t ino; | |
210 | __u32 igen; | |
211 | int error; | |
212 | ||
213 | /* | |
214 | * Only allow handle opens under a directory. | |
215 | */ | |
216 | if (!S_ISDIR(parinode->i_mode)) | |
217 | return XFS_ERROR(ENOTDIR); | |
218 | ||
219 | hanp = hreq->ihandle; | |
220 | hlen = hreq->ihandlen; | |
221 | handlep = &handle; | |
222 | ||
223 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
224 | return XFS_ERROR(EINVAL); | |
225 | if (copy_from_user(handlep, hanp, hlen)) | |
226 | return XFS_ERROR(EFAULT); | |
227 | if (hlen < sizeof(*handlep)) | |
228 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
229 | if (hlen > sizeof(handlep->ha_fsid)) { | |
230 | if (handlep->ha_fid.xfs_fid_len != | |
231 | (hlen - sizeof(handlep->ha_fsid) | |
232 | - sizeof(handlep->ha_fid.xfs_fid_len)) | |
233 | || handlep->ha_fid.xfs_fid_pad) | |
234 | return XFS_ERROR(EINVAL); | |
235 | } | |
236 | ||
237 | /* | |
238 | * Crack the handle, obtain the inode # & generation # | |
239 | */ | |
240 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
241 | if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) { | |
242 | ino = xfid->xfs_fid_ino; | |
243 | igen = xfid->xfs_fid_gen; | |
244 | } else { | |
245 | return XFS_ERROR(EINVAL); | |
246 | } | |
247 | ||
248 | /* | |
249 | * Get the XFS inode, building a vnode to go with it. | |
250 | */ | |
251 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
252 | if (error) | |
253 | return error; | |
254 | if (ip == NULL) | |
255 | return XFS_ERROR(EIO); | |
256 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
257 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
258 | return XFS_ERROR(ENOENT); | |
259 | } | |
260 | ||
261 | vpp = XFS_ITOV(ip); | |
262 | inodep = LINVFS_GET_IP(vpp); | |
263 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
264 | ||
265 | *vp = vpp; | |
266 | *inode = inodep; | |
267 | return 0; | |
268 | } | |
269 | ||
270 | STATIC int | |
271 | xfs_open_by_handle( | |
272 | xfs_mount_t *mp, | |
273 | void __user *arg, | |
274 | struct file *parfilp, | |
275 | struct inode *parinode) | |
276 | { | |
277 | int error; | |
278 | int new_fd; | |
279 | int permflag; | |
280 | struct file *filp; | |
281 | struct inode *inode; | |
282 | struct dentry *dentry; | |
283 | vnode_t *vp; | |
284 | xfs_fsop_handlereq_t hreq; | |
285 | ||
286 | if (!capable(CAP_SYS_ADMIN)) | |
287 | return -XFS_ERROR(EPERM); | |
288 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
289 | return -XFS_ERROR(EFAULT); | |
290 | ||
291 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
292 | if (error) | |
293 | return -error; | |
294 | ||
295 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
296 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
297 | iput(inode); | |
298 | return -XFS_ERROR(EINVAL); | |
299 | } | |
300 | ||
301 | #if BITS_PER_LONG != 32 | |
302 | hreq.oflags |= O_LARGEFILE; | |
303 | #endif | |
304 | /* Put open permission in namei format. */ | |
305 | permflag = hreq.oflags; | |
306 | if ((permflag+1) & O_ACCMODE) | |
307 | permflag++; | |
308 | if (permflag & O_TRUNC) | |
309 | permflag |= 2; | |
310 | ||
311 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
312 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
313 | iput(inode); | |
314 | return -XFS_ERROR(EPERM); | |
315 | } | |
316 | ||
317 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
318 | iput(inode); | |
319 | return -XFS_ERROR(EACCES); | |
320 | } | |
321 | ||
322 | /* Can't write directories. */ | |
323 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
324 | iput(inode); | |
325 | return -XFS_ERROR(EISDIR); | |
326 | } | |
327 | ||
328 | if ((new_fd = get_unused_fd()) < 0) { | |
329 | iput(inode); | |
330 | return new_fd; | |
331 | } | |
332 | ||
333 | dentry = d_alloc_anon(inode); | |
334 | if (dentry == NULL) { | |
335 | iput(inode); | |
336 | put_unused_fd(new_fd); | |
337 | return -XFS_ERROR(ENOMEM); | |
338 | } | |
339 | ||
340 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
341 | mntget(parfilp->f_vfsmnt); | |
342 | ||
343 | /* Create file pointer. */ | |
344 | filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags); | |
345 | if (IS_ERR(filp)) { | |
346 | put_unused_fd(new_fd); | |
347 | return -XFS_ERROR(-PTR_ERR(filp)); | |
348 | } | |
349 | if (inode->i_mode & S_IFREG) | |
350 | filp->f_op = &linvfs_invis_file_operations; | |
351 | ||
352 | fd_install(new_fd, filp); | |
353 | return new_fd; | |
354 | } | |
355 | ||
356 | STATIC int | |
357 | xfs_readlink_by_handle( | |
358 | xfs_mount_t *mp, | |
359 | void __user *arg, | |
360 | struct file *parfilp, | |
361 | struct inode *parinode) | |
362 | { | |
363 | int error; | |
364 | struct iovec aiov; | |
365 | struct uio auio; | |
366 | struct inode *inode; | |
367 | xfs_fsop_handlereq_t hreq; | |
368 | vnode_t *vp; | |
369 | __u32 olen; | |
370 | ||
371 | if (!capable(CAP_SYS_ADMIN)) | |
372 | return -XFS_ERROR(EPERM); | |
373 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
374 | return -XFS_ERROR(EFAULT); | |
375 | ||
376 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
377 | if (error) | |
378 | return -error; | |
379 | ||
380 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 381 | if (!S_ISLNK(inode->i_mode)) { |
1da177e4 LT |
382 | VN_RELE(vp); |
383 | return -XFS_ERROR(EINVAL); | |
384 | } | |
385 | ||
386 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
387 | VN_RELE(vp); | |
388 | return -XFS_ERROR(EFAULT); | |
389 | } | |
390 | aiov.iov_len = olen; | |
391 | aiov.iov_base = hreq.ohandle; | |
392 | ||
393 | auio.uio_iov = &aiov; | |
394 | auio.uio_iovcnt = 1; | |
395 | auio.uio_offset = 0; | |
396 | auio.uio_segflg = UIO_USERSPACE; | |
397 | auio.uio_resid = olen; | |
398 | ||
399 | VOP_READLINK(vp, &auio, IO_INVIS, NULL, error); | |
400 | ||
401 | VN_RELE(vp); | |
402 | return (olen - auio.uio_resid); | |
403 | } | |
404 | ||
405 | STATIC int | |
406 | xfs_fssetdm_by_handle( | |
407 | xfs_mount_t *mp, | |
408 | void __user *arg, | |
409 | struct file *parfilp, | |
410 | struct inode *parinode) | |
411 | { | |
412 | int error; | |
413 | struct fsdmidata fsd; | |
414 | xfs_fsop_setdm_handlereq_t dmhreq; | |
415 | struct inode *inode; | |
416 | bhv_desc_t *bdp; | |
417 | vnode_t *vp; | |
418 | ||
419 | if (!capable(CAP_MKNOD)) | |
420 | return -XFS_ERROR(EPERM); | |
421 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
422 | return -XFS_ERROR(EFAULT); | |
423 | ||
424 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode); | |
425 | if (error) | |
426 | return -error; | |
427 | ||
428 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
429 | VN_RELE(vp); | |
430 | return -XFS_ERROR(EPERM); | |
431 | } | |
432 | ||
433 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
434 | VN_RELE(vp); | |
435 | return -XFS_ERROR(EFAULT); | |
436 | } | |
437 | ||
438 | bdp = bhv_base_unlocked(VN_BHV_HEAD(vp)); | |
439 | error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL); | |
440 | ||
441 | VN_RELE(vp); | |
442 | if (error) | |
443 | return -error; | |
444 | return 0; | |
445 | } | |
446 | ||
447 | STATIC int | |
448 | xfs_attrlist_by_handle( | |
449 | xfs_mount_t *mp, | |
450 | void __user *arg, | |
451 | struct file *parfilp, | |
452 | struct inode *parinode) | |
453 | { | |
454 | int error; | |
455 | attrlist_cursor_kern_t *cursor; | |
456 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
457 | struct inode *inode; | |
458 | vnode_t *vp; | |
459 | char *kbuf; | |
460 | ||
461 | if (!capable(CAP_SYS_ADMIN)) | |
462 | return -XFS_ERROR(EPERM); | |
463 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
464 | return -XFS_ERROR(EFAULT); | |
465 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
466 | return -XFS_ERROR(EINVAL); | |
467 | ||
468 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, | |
469 | &vp, &inode); | |
470 | if (error) | |
471 | goto out; | |
472 | ||
473 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
474 | if (!kbuf) | |
475 | goto out_vn_rele; | |
476 | ||
477 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
478 | VOP_ATTR_LIST(vp, kbuf, al_hreq.buflen, al_hreq.flags, | |
479 | cursor, NULL, error); | |
480 | if (error) | |
481 | goto out_kfree; | |
482 | ||
483 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
484 | error = -EFAULT; | |
485 | ||
486 | out_kfree: | |
487 | kfree(kbuf); | |
488 | out_vn_rele: | |
489 | VN_RELE(vp); | |
490 | out: | |
491 | return -error; | |
492 | } | |
493 | ||
494 | STATIC int | |
495 | xfs_attrmulti_attr_get( | |
496 | struct vnode *vp, | |
497 | char *name, | |
498 | char __user *ubuf, | |
499 | __uint32_t *len, | |
500 | __uint32_t flags) | |
501 | { | |
502 | char *kbuf; | |
503 | int error = EFAULT; | |
504 | ||
505 | if (*len > XATTR_SIZE_MAX) | |
506 | return EINVAL; | |
507 | kbuf = kmalloc(*len, GFP_KERNEL); | |
508 | if (!kbuf) | |
509 | return ENOMEM; | |
510 | ||
511 | VOP_ATTR_GET(vp, name, kbuf, len, flags, NULL, error); | |
512 | if (error) | |
513 | goto out_kfree; | |
514 | ||
515 | if (copy_to_user(ubuf, kbuf, *len)) | |
516 | error = EFAULT; | |
517 | ||
518 | out_kfree: | |
519 | kfree(kbuf); | |
520 | return error; | |
521 | } | |
522 | ||
523 | STATIC int | |
524 | xfs_attrmulti_attr_set( | |
525 | struct vnode *vp, | |
526 | char *name, | |
527 | const char __user *ubuf, | |
528 | __uint32_t len, | |
529 | __uint32_t flags) | |
530 | { | |
531 | char *kbuf; | |
532 | int error = EFAULT; | |
533 | ||
3542c6e1 CH |
534 | if (IS_RDONLY(&vp->v_inode)) |
535 | return -EROFS; | |
1da177e4 LT |
536 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
537 | return EPERM; | |
538 | if (len > XATTR_SIZE_MAX) | |
539 | return EINVAL; | |
540 | ||
541 | kbuf = kmalloc(len, GFP_KERNEL); | |
542 | if (!kbuf) | |
543 | return ENOMEM; | |
544 | ||
545 | if (copy_from_user(kbuf, ubuf, len)) | |
546 | goto out_kfree; | |
547 | ||
548 | VOP_ATTR_SET(vp, name, kbuf, len, flags, NULL, error); | |
549 | ||
550 | out_kfree: | |
551 | kfree(kbuf); | |
552 | return error; | |
553 | } | |
554 | ||
555 | STATIC int | |
556 | xfs_attrmulti_attr_remove( | |
557 | struct vnode *vp, | |
558 | char *name, | |
559 | __uint32_t flags) | |
560 | { | |
561 | int error; | |
562 | ||
3542c6e1 CH |
563 | |
564 | if (IS_RDONLY(&vp->v_inode)) | |
565 | return -EROFS; | |
1da177e4 LT |
566 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
567 | return EPERM; | |
568 | ||
569 | VOP_ATTR_REMOVE(vp, name, flags, NULL, error); | |
570 | return error; | |
571 | } | |
572 | ||
573 | STATIC int | |
574 | xfs_attrmulti_by_handle( | |
575 | xfs_mount_t *mp, | |
576 | void __user *arg, | |
577 | struct file *parfilp, | |
578 | struct inode *parinode) | |
579 | { | |
580 | int error; | |
581 | xfs_attr_multiop_t *ops; | |
582 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
583 | struct inode *inode; | |
584 | vnode_t *vp; | |
585 | unsigned int i, size; | |
586 | char *attr_name; | |
587 | ||
588 | if (!capable(CAP_SYS_ADMIN)) | |
589 | return -XFS_ERROR(EPERM); | |
590 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
591 | return -XFS_ERROR(EFAULT); | |
592 | ||
593 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode); | |
594 | if (error) | |
595 | goto out; | |
596 | ||
597 | error = E2BIG; | |
598 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
599 | if (!size || size > 16 * PAGE_SIZE) | |
600 | goto out_vn_rele; | |
601 | ||
602 | error = ENOMEM; | |
603 | ops = kmalloc(size, GFP_KERNEL); | |
604 | if (!ops) | |
605 | goto out_vn_rele; | |
606 | ||
607 | error = EFAULT; | |
608 | if (copy_from_user(ops, am_hreq.ops, size)) | |
609 | goto out_kfree_ops; | |
610 | ||
611 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
612 | if (!attr_name) | |
613 | goto out_kfree_ops; | |
614 | ||
615 | ||
616 | error = 0; | |
617 | for (i = 0; i < am_hreq.opcount; i++) { | |
618 | ops[i].am_error = strncpy_from_user(attr_name, | |
619 | ops[i].am_attrname, MAXNAMELEN); | |
620 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
621 | error = -ERANGE; | |
622 | if (ops[i].am_error < 0) | |
623 | break; | |
624 | ||
625 | switch (ops[i].am_opcode) { | |
626 | case ATTR_OP_GET: | |
627 | ops[i].am_error = xfs_attrmulti_attr_get(vp, | |
628 | attr_name, ops[i].am_attrvalue, | |
629 | &ops[i].am_length, ops[i].am_flags); | |
630 | break; | |
631 | case ATTR_OP_SET: | |
632 | ops[i].am_error = xfs_attrmulti_attr_set(vp, | |
633 | attr_name, ops[i].am_attrvalue, | |
634 | ops[i].am_length, ops[i].am_flags); | |
635 | break; | |
636 | case ATTR_OP_REMOVE: | |
637 | ops[i].am_error = xfs_attrmulti_attr_remove(vp, | |
638 | attr_name, ops[i].am_flags); | |
639 | break; | |
640 | default: | |
641 | ops[i].am_error = EINVAL; | |
642 | } | |
643 | } | |
644 | ||
645 | if (copy_to_user(am_hreq.ops, ops, size)) | |
646 | error = XFS_ERROR(EFAULT); | |
647 | ||
648 | kfree(attr_name); | |
649 | out_kfree_ops: | |
650 | kfree(ops); | |
651 | out_vn_rele: | |
652 | VN_RELE(vp); | |
653 | out: | |
654 | return -error; | |
655 | } | |
656 | ||
657 | /* prototypes for a few of the stack-hungry cases that have | |
658 | * their own functions. Functions are defined after their use | |
659 | * so gcc doesn't get fancy and inline them with -03 */ | |
660 | ||
661 | STATIC int | |
662 | xfs_ioc_space( | |
663 | bhv_desc_t *bdp, | |
664 | vnode_t *vp, | |
665 | struct file *filp, | |
666 | int flags, | |
667 | unsigned int cmd, | |
668 | void __user *arg); | |
669 | ||
670 | STATIC int | |
671 | xfs_ioc_bulkstat( | |
672 | xfs_mount_t *mp, | |
673 | unsigned int cmd, | |
674 | void __user *arg); | |
675 | ||
676 | STATIC int | |
677 | xfs_ioc_fsgeometry_v1( | |
678 | xfs_mount_t *mp, | |
679 | void __user *arg); | |
680 | ||
681 | STATIC int | |
682 | xfs_ioc_fsgeometry( | |
683 | xfs_mount_t *mp, | |
684 | void __user *arg); | |
685 | ||
686 | STATIC int | |
687 | xfs_ioc_xattr( | |
688 | vnode_t *vp, | |
689 | xfs_inode_t *ip, | |
690 | struct file *filp, | |
691 | unsigned int cmd, | |
692 | void __user *arg); | |
693 | ||
694 | STATIC int | |
695 | xfs_ioc_getbmap( | |
696 | bhv_desc_t *bdp, | |
697 | struct file *filp, | |
698 | int flags, | |
699 | unsigned int cmd, | |
700 | void __user *arg); | |
701 | ||
702 | STATIC int | |
703 | xfs_ioc_getbmapx( | |
704 | bhv_desc_t *bdp, | |
705 | void __user *arg); | |
706 | ||
707 | int | |
708 | xfs_ioctl( | |
709 | bhv_desc_t *bdp, | |
710 | struct inode *inode, | |
711 | struct file *filp, | |
712 | int ioflags, | |
713 | unsigned int cmd, | |
714 | void __user *arg) | |
715 | { | |
716 | int error; | |
717 | vnode_t *vp; | |
718 | xfs_inode_t *ip; | |
719 | xfs_mount_t *mp; | |
720 | ||
721 | vp = LINVFS_GET_VP(inode); | |
722 | ||
723 | vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address); | |
724 | ||
725 | ip = XFS_BHVTOI(bdp); | |
726 | mp = ip->i_mount; | |
727 | ||
728 | switch (cmd) { | |
729 | ||
730 | case XFS_IOC_ALLOCSP: | |
731 | case XFS_IOC_FREESP: | |
732 | case XFS_IOC_RESVSP: | |
733 | case XFS_IOC_UNRESVSP: | |
734 | case XFS_IOC_ALLOCSP64: | |
735 | case XFS_IOC_FREESP64: | |
736 | case XFS_IOC_RESVSP64: | |
737 | case XFS_IOC_UNRESVSP64: | |
738 | /* | |
739 | * Only allow the sys admin to reserve space unless | |
740 | * unwritten extents are enabled. | |
741 | */ | |
742 | if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) && | |
743 | !capable(CAP_SYS_ADMIN)) | |
744 | return -EPERM; | |
745 | ||
746 | return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg); | |
747 | ||
748 | case XFS_IOC_DIOINFO: { | |
749 | struct dioattr da; | |
750 | xfs_buftarg_t *target = | |
751 | (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? | |
752 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
753 | ||
754 | da.d_mem = da.d_miniosz = 1 << target->pbr_sshift; | |
755 | /* The size dio will do in one go */ | |
756 | da.d_maxiosz = 64 * PAGE_CACHE_SIZE; | |
757 | ||
758 | if (copy_to_user(arg, &da, sizeof(da))) | |
759 | return -XFS_ERROR(EFAULT); | |
760 | return 0; | |
761 | } | |
762 | ||
763 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
764 | case XFS_IOC_FSBULKSTAT: | |
765 | case XFS_IOC_FSINUMBERS: | |
766 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
767 | ||
768 | case XFS_IOC_FSGEOMETRY_V1: | |
769 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
770 | ||
771 | case XFS_IOC_FSGEOMETRY: | |
772 | return xfs_ioc_fsgeometry(mp, arg); | |
773 | ||
774 | case XFS_IOC_GETVERSION: | |
775 | case XFS_IOC_GETXFLAGS: | |
776 | case XFS_IOC_SETXFLAGS: | |
777 | case XFS_IOC_FSGETXATTR: | |
778 | case XFS_IOC_FSSETXATTR: | |
779 | case XFS_IOC_FSGETXATTRA: | |
780 | return xfs_ioc_xattr(vp, ip, filp, cmd, arg); | |
781 | ||
782 | case XFS_IOC_FSSETDM: { | |
783 | struct fsdmidata dmi; | |
784 | ||
785 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
786 | return -XFS_ERROR(EFAULT); | |
787 | ||
788 | error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate, | |
789 | NULL); | |
790 | return -error; | |
791 | } | |
792 | ||
793 | case XFS_IOC_GETBMAP: | |
794 | case XFS_IOC_GETBMAPA: | |
795 | return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg); | |
796 | ||
797 | case XFS_IOC_GETBMAPX: | |
798 | return xfs_ioc_getbmapx(bdp, arg); | |
799 | ||
800 | case XFS_IOC_FD_TO_HANDLE: | |
801 | case XFS_IOC_PATH_TO_HANDLE: | |
802 | case XFS_IOC_PATH_TO_FSHANDLE: | |
803 | return xfs_find_handle(cmd, arg); | |
804 | ||
805 | case XFS_IOC_OPEN_BY_HANDLE: | |
806 | return xfs_open_by_handle(mp, arg, filp, inode); | |
807 | ||
808 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
809 | return xfs_fssetdm_by_handle(mp, arg, filp, inode); | |
810 | ||
811 | case XFS_IOC_READLINK_BY_HANDLE: | |
812 | return xfs_readlink_by_handle(mp, arg, filp, inode); | |
813 | ||
814 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
815 | return xfs_attrlist_by_handle(mp, arg, filp, inode); | |
816 | ||
817 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
818 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); | |
819 | ||
820 | case XFS_IOC_SWAPEXT: { | |
821 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
822 | return -error; | |
823 | } | |
824 | ||
825 | case XFS_IOC_FSCOUNTS: { | |
826 | xfs_fsop_counts_t out; | |
827 | ||
828 | error = xfs_fs_counts(mp, &out); | |
829 | if (error) | |
830 | return -error; | |
831 | ||
832 | if (copy_to_user(arg, &out, sizeof(out))) | |
833 | return -XFS_ERROR(EFAULT); | |
834 | return 0; | |
835 | } | |
836 | ||
837 | case XFS_IOC_SET_RESBLKS: { | |
838 | xfs_fsop_resblks_t inout; | |
839 | __uint64_t in; | |
840 | ||
841 | if (!capable(CAP_SYS_ADMIN)) | |
842 | return -EPERM; | |
843 | ||
844 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
845 | return -XFS_ERROR(EFAULT); | |
846 | ||
847 | /* input parameter is passed in resblks field of structure */ | |
848 | in = inout.resblks; | |
849 | error = xfs_reserve_blocks(mp, &in, &inout); | |
850 | if (error) | |
851 | return -error; | |
852 | ||
853 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
854 | return -XFS_ERROR(EFAULT); | |
855 | return 0; | |
856 | } | |
857 | ||
858 | case XFS_IOC_GET_RESBLKS: { | |
859 | xfs_fsop_resblks_t out; | |
860 | ||
861 | if (!capable(CAP_SYS_ADMIN)) | |
862 | return -EPERM; | |
863 | ||
864 | error = xfs_reserve_blocks(mp, NULL, &out); | |
865 | if (error) | |
866 | return -error; | |
867 | ||
868 | if (copy_to_user(arg, &out, sizeof(out))) | |
869 | return -XFS_ERROR(EFAULT); | |
870 | ||
871 | return 0; | |
872 | } | |
873 | ||
874 | case XFS_IOC_FSGROWFSDATA: { | |
875 | xfs_growfs_data_t in; | |
876 | ||
877 | if (!capable(CAP_SYS_ADMIN)) | |
878 | return -EPERM; | |
879 | ||
880 | if (copy_from_user(&in, arg, sizeof(in))) | |
881 | return -XFS_ERROR(EFAULT); | |
882 | ||
883 | error = xfs_growfs_data(mp, &in); | |
884 | return -error; | |
885 | } | |
886 | ||
887 | case XFS_IOC_FSGROWFSLOG: { | |
888 | xfs_growfs_log_t in; | |
889 | ||
890 | if (!capable(CAP_SYS_ADMIN)) | |
891 | return -EPERM; | |
892 | ||
893 | if (copy_from_user(&in, arg, sizeof(in))) | |
894 | return -XFS_ERROR(EFAULT); | |
895 | ||
896 | error = xfs_growfs_log(mp, &in); | |
897 | return -error; | |
898 | } | |
899 | ||
900 | case XFS_IOC_FSGROWFSRT: { | |
901 | xfs_growfs_rt_t in; | |
902 | ||
903 | if (!capable(CAP_SYS_ADMIN)) | |
904 | return -EPERM; | |
905 | ||
906 | if (copy_from_user(&in, arg, sizeof(in))) | |
907 | return -XFS_ERROR(EFAULT); | |
908 | ||
909 | error = xfs_growfs_rt(mp, &in); | |
910 | return -error; | |
911 | } | |
912 | ||
913 | case XFS_IOC_FREEZE: | |
914 | if (!capable(CAP_SYS_ADMIN)) | |
915 | return -EPERM; | |
916 | ||
917 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
918 | freeze_bdev(inode->i_sb->s_bdev); | |
919 | return 0; | |
920 | ||
921 | case XFS_IOC_THAW: | |
922 | if (!capable(CAP_SYS_ADMIN)) | |
923 | return -EPERM; | |
924 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
925 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
926 | return 0; | |
927 | ||
928 | case XFS_IOC_GOINGDOWN: { | |
929 | __uint32_t in; | |
930 | ||
931 | if (!capable(CAP_SYS_ADMIN)) | |
932 | return -EPERM; | |
933 | ||
934 | if (get_user(in, (__uint32_t __user *)arg)) | |
935 | return -XFS_ERROR(EFAULT); | |
936 | ||
937 | error = xfs_fs_goingdown(mp, in); | |
938 | return -error; | |
939 | } | |
940 | ||
941 | case XFS_IOC_ERROR_INJECTION: { | |
942 | xfs_error_injection_t in; | |
943 | ||
944 | if (!capable(CAP_SYS_ADMIN)) | |
945 | return -EPERM; | |
946 | ||
947 | if (copy_from_user(&in, arg, sizeof(in))) | |
948 | return -XFS_ERROR(EFAULT); | |
949 | ||
950 | error = xfs_errortag_add(in.errtag, mp); | |
951 | return -error; | |
952 | } | |
953 | ||
954 | case XFS_IOC_ERROR_CLEARALL: | |
955 | if (!capable(CAP_SYS_ADMIN)) | |
956 | return -EPERM; | |
957 | ||
958 | error = xfs_errortag_clearall(mp); | |
959 | return -error; | |
960 | ||
961 | default: | |
962 | return -ENOTTY; | |
963 | } | |
964 | } | |
965 | ||
966 | STATIC int | |
967 | xfs_ioc_space( | |
968 | bhv_desc_t *bdp, | |
969 | vnode_t *vp, | |
970 | struct file *filp, | |
971 | int ioflags, | |
972 | unsigned int cmd, | |
973 | void __user *arg) | |
974 | { | |
975 | xfs_flock64_t bf; | |
976 | int attr_flags = 0; | |
977 | int error; | |
978 | ||
979 | if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND)) | |
980 | return -XFS_ERROR(EPERM); | |
981 | ||
ad4a8ac4 | 982 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
983 | return -XFS_ERROR(EBADF); |
984 | ||
0432dab2 | 985 | if (!VN_ISREG(vp)) |
1da177e4 LT |
986 | return -XFS_ERROR(EINVAL); |
987 | ||
988 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
989 | return -XFS_ERROR(EFAULT); | |
990 | ||
991 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
992 | attr_flags |= ATTR_NONBLOCK; | |
993 | if (ioflags & IO_INVIS) | |
994 | attr_flags |= ATTR_DMI; | |
995 | ||
996 | error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos, | |
997 | NULL, attr_flags); | |
998 | return -error; | |
999 | } | |
1000 | ||
1001 | STATIC int | |
1002 | xfs_ioc_bulkstat( | |
1003 | xfs_mount_t *mp, | |
1004 | unsigned int cmd, | |
1005 | void __user *arg) | |
1006 | { | |
1007 | xfs_fsop_bulkreq_t bulkreq; | |
1008 | int count; /* # of records returned */ | |
1009 | xfs_ino_t inlast; /* last inode number */ | |
1010 | int done; | |
1011 | int error; | |
1012 | ||
1013 | /* done = 1 if there are more stats to get and if bulkstat */ | |
1014 | /* should be called again (unused here, but used in dmapi) */ | |
1015 | ||
1016 | if (!capable(CAP_SYS_ADMIN)) | |
1017 | return -EPERM; | |
1018 | ||
1019 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1020 | return -XFS_ERROR(EIO); | |
1021 | ||
1022 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
1023 | return -XFS_ERROR(EFAULT); | |
1024 | ||
1025 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
1026 | return -XFS_ERROR(EFAULT); | |
1027 | ||
1028 | if ((count = bulkreq.icount) <= 0) | |
1029 | return -XFS_ERROR(EINVAL); | |
1030 | ||
1031 | if (cmd == XFS_IOC_FSINUMBERS) | |
1032 | error = xfs_inumbers(mp, &inlast, &count, | |
1033 | bulkreq.ubuffer); | |
1034 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) | |
1035 | error = xfs_bulkstat_single(mp, &inlast, | |
1036 | bulkreq.ubuffer, &done); | |
1037 | else { /* XFS_IOC_FSBULKSTAT */ | |
1038 | if (count == 1 && inlast != 0) { | |
1039 | inlast++; | |
1040 | error = xfs_bulkstat_single(mp, &inlast, | |
1041 | bulkreq.ubuffer, &done); | |
1042 | } else { | |
1043 | error = xfs_bulkstat(mp, &inlast, &count, | |
1044 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
1045 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
1046 | BULKSTAT_FG_QUICK, &done); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | if (error) | |
1051 | return -error; | |
1052 | ||
1053 | if (bulkreq.ocount != NULL) { | |
1054 | if (copy_to_user(bulkreq.lastip, &inlast, | |
1055 | sizeof(xfs_ino_t))) | |
1056 | return -XFS_ERROR(EFAULT); | |
1057 | ||
1058 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
1059 | return -XFS_ERROR(EFAULT); | |
1060 | } | |
1061 | ||
1062 | return 0; | |
1063 | } | |
1064 | ||
1065 | STATIC int | |
1066 | xfs_ioc_fsgeometry_v1( | |
1067 | xfs_mount_t *mp, | |
1068 | void __user *arg) | |
1069 | { | |
1070 | xfs_fsop_geom_v1_t fsgeo; | |
1071 | int error; | |
1072 | ||
1073 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
1074 | if (error) | |
1075 | return -error; | |
1076 | ||
1077 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1078 | return -XFS_ERROR(EFAULT); | |
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | STATIC int | |
1083 | xfs_ioc_fsgeometry( | |
1084 | xfs_mount_t *mp, | |
1085 | void __user *arg) | |
1086 | { | |
1087 | xfs_fsop_geom_t fsgeo; | |
1088 | int error; | |
1089 | ||
1090 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
1091 | if (error) | |
1092 | return -error; | |
1093 | ||
1094 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1095 | return -XFS_ERROR(EFAULT); | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * Linux extended inode flags interface. | |
1101 | */ | |
1102 | #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */ | |
1103 | #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */ | |
1104 | #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */ | |
1105 | #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */ | |
1106 | #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */ | |
1107 | ||
1108 | STATIC unsigned int | |
1109 | xfs_merge_ioc_xflags( | |
1110 | unsigned int flags, | |
1111 | unsigned int start) | |
1112 | { | |
1113 | unsigned int xflags = start; | |
1114 | ||
1115 | if (flags & LINUX_XFLAG_IMMUTABLE) | |
1116 | xflags |= XFS_XFLAG_IMMUTABLE; | |
1117 | else | |
1118 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
1119 | if (flags & LINUX_XFLAG_APPEND) | |
1120 | xflags |= XFS_XFLAG_APPEND; | |
1121 | else | |
1122 | xflags &= ~XFS_XFLAG_APPEND; | |
1123 | if (flags & LINUX_XFLAG_SYNC) | |
1124 | xflags |= XFS_XFLAG_SYNC; | |
1125 | else | |
1126 | xflags &= ~XFS_XFLAG_SYNC; | |
1127 | if (flags & LINUX_XFLAG_NOATIME) | |
1128 | xflags |= XFS_XFLAG_NOATIME; | |
1129 | else | |
1130 | xflags &= ~XFS_XFLAG_NOATIME; | |
1131 | if (flags & LINUX_XFLAG_NODUMP) | |
1132 | xflags |= XFS_XFLAG_NODUMP; | |
1133 | else | |
1134 | xflags &= ~XFS_XFLAG_NODUMP; | |
1135 | ||
1136 | return xflags; | |
1137 | } | |
1138 | ||
1139 | STATIC unsigned int | |
1140 | xfs_di2lxflags( | |
1141 | __uint16_t di_flags) | |
1142 | { | |
1143 | unsigned int flags = 0; | |
1144 | ||
1145 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
1146 | flags |= LINUX_XFLAG_IMMUTABLE; | |
1147 | if (di_flags & XFS_DIFLAG_APPEND) | |
1148 | flags |= LINUX_XFLAG_APPEND; | |
1149 | if (di_flags & XFS_DIFLAG_SYNC) | |
1150 | flags |= LINUX_XFLAG_SYNC; | |
1151 | if (di_flags & XFS_DIFLAG_NOATIME) | |
1152 | flags |= LINUX_XFLAG_NOATIME; | |
1153 | if (di_flags & XFS_DIFLAG_NODUMP) | |
1154 | flags |= LINUX_XFLAG_NODUMP; | |
1155 | return flags; | |
1156 | } | |
1157 | ||
1158 | STATIC int | |
1159 | xfs_ioc_xattr( | |
1160 | vnode_t *vp, | |
1161 | xfs_inode_t *ip, | |
1162 | struct file *filp, | |
1163 | unsigned int cmd, | |
1164 | void __user *arg) | |
1165 | { | |
1166 | struct fsxattr fa; | |
1167 | vattr_t va; | |
1168 | int error; | |
1169 | int attr_flags; | |
1170 | unsigned int flags; | |
1171 | ||
1172 | switch (cmd) { | |
1173 | case XFS_IOC_FSGETXATTR: { | |
77bc5beb NS |
1174 | va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1175 | XFS_AT_NEXTENTS | XFS_AT_PROJID; | |
1da177e4 LT |
1176 | VOP_GETATTR(vp, &va, 0, NULL, error); |
1177 | if (error) | |
1178 | return -error; | |
1179 | ||
1180 | fa.fsx_xflags = va.va_xflags; | |
1181 | fa.fsx_extsize = va.va_extsize; | |
1182 | fa.fsx_nextents = va.va_nextents; | |
77bc5beb | 1183 | fa.fsx_projid = va.va_projid; |
1da177e4 LT |
1184 | |
1185 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
1186 | return -XFS_ERROR(EFAULT); | |
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | case XFS_IOC_FSSETXATTR: { | |
1191 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1192 | return -XFS_ERROR(EFAULT); | |
1193 | ||
1194 | attr_flags = 0; | |
1195 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1196 | attr_flags |= ATTR_NONBLOCK; | |
1197 | ||
77bc5beb | 1198 | va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
1da177e4 LT |
1199 | va.va_xflags = fa.fsx_xflags; |
1200 | va.va_extsize = fa.fsx_extsize; | |
77bc5beb | 1201 | va.va_projid = fa.fsx_projid; |
1da177e4 LT |
1202 | |
1203 | VOP_SETATTR(vp, &va, attr_flags, NULL, error); | |
1204 | if (!error) | |
1205 | vn_revalidate(vp); /* update Linux inode flags */ | |
1206 | return -error; | |
1207 | } | |
1208 | ||
1209 | case XFS_IOC_FSGETXATTRA: { | |
77bc5beb NS |
1210 | va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1211 | XFS_AT_ANEXTENTS | XFS_AT_PROJID; | |
1da177e4 LT |
1212 | VOP_GETATTR(vp, &va, 0, NULL, error); |
1213 | if (error) | |
1214 | return -error; | |
1215 | ||
1216 | fa.fsx_xflags = va.va_xflags; | |
1217 | fa.fsx_extsize = va.va_extsize; | |
1218 | fa.fsx_nextents = va.va_anextents; | |
77bc5beb | 1219 | fa.fsx_projid = va.va_projid; |
1da177e4 LT |
1220 | |
1221 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
1222 | return -XFS_ERROR(EFAULT); | |
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | case XFS_IOC_GETXFLAGS: { | |
1227 | flags = xfs_di2lxflags(ip->i_d.di_flags); | |
1228 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1229 | return -XFS_ERROR(EFAULT); | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | case XFS_IOC_SETXFLAGS: { | |
1234 | if (copy_from_user(&flags, arg, sizeof(flags))) | |
1235 | return -XFS_ERROR(EFAULT); | |
1236 | ||
1237 | if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \ | |
1238 | LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \ | |
1239 | LINUX_XFLAG_SYNC)) | |
1240 | return -XFS_ERROR(EOPNOTSUPP); | |
1241 | ||
1242 | attr_flags = 0; | |
1243 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1244 | attr_flags |= ATTR_NONBLOCK; | |
1245 | ||
1246 | va.va_mask = XFS_AT_XFLAGS; | |
1247 | va.va_xflags = xfs_merge_ioc_xflags(flags, | |
1248 | xfs_ip2xflags(ip)); | |
1249 | ||
1250 | VOP_SETATTR(vp, &va, attr_flags, NULL, error); | |
1251 | if (!error) | |
1252 | vn_revalidate(vp); /* update Linux inode flags */ | |
1253 | return -error; | |
1254 | } | |
1255 | ||
1256 | case XFS_IOC_GETVERSION: { | |
1257 | flags = LINVFS_GET_IP(vp)->i_generation; | |
1258 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1259 | return -XFS_ERROR(EFAULT); | |
1260 | return 0; | |
1261 | } | |
1262 | ||
1263 | default: | |
1264 | return -ENOTTY; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | STATIC int | |
1269 | xfs_ioc_getbmap( | |
1270 | bhv_desc_t *bdp, | |
1271 | struct file *filp, | |
1272 | int ioflags, | |
1273 | unsigned int cmd, | |
1274 | void __user *arg) | |
1275 | { | |
1276 | struct getbmap bm; | |
1277 | int iflags; | |
1278 | int error; | |
1279 | ||
1280 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
1281 | return -XFS_ERROR(EFAULT); | |
1282 | ||
1283 | if (bm.bmv_count < 2) | |
1284 | return -XFS_ERROR(EINVAL); | |
1285 | ||
1286 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
1287 | if (ioflags & IO_INVIS) | |
1288 | iflags |= BMV_IF_NO_DMAPI_READ; | |
1289 | ||
1290 | error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags); | |
1291 | if (error) | |
1292 | return -error; | |
1293 | ||
1294 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
1295 | return -XFS_ERROR(EFAULT); | |
1296 | return 0; | |
1297 | } | |
1298 | ||
1299 | STATIC int | |
1300 | xfs_ioc_getbmapx( | |
1301 | bhv_desc_t *bdp, | |
1302 | void __user *arg) | |
1303 | { | |
1304 | struct getbmapx bmx; | |
1305 | struct getbmap bm; | |
1306 | int iflags; | |
1307 | int error; | |
1308 | ||
1309 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1310 | return -XFS_ERROR(EFAULT); | |
1311 | ||
1312 | if (bmx.bmv_count < 2) | |
1313 | return -XFS_ERROR(EINVAL); | |
1314 | ||
1315 | /* | |
1316 | * Map input getbmapx structure to a getbmap | |
1317 | * structure for xfs_getbmap. | |
1318 | */ | |
1319 | GETBMAP_CONVERT(bmx, bm); | |
1320 | ||
1321 | iflags = bmx.bmv_iflags; | |
1322 | ||
1323 | if (iflags & (~BMV_IF_VALID)) | |
1324 | return -XFS_ERROR(EINVAL); | |
1325 | ||
1326 | iflags |= BMV_IF_EXTENDED; | |
1327 | ||
1328 | error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags); | |
1329 | if (error) | |
1330 | return -error; | |
1331 | ||
1332 | GETBMAP_CONVERT(bm, bmx); | |
1333 | ||
1334 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1335 | return -XFS_ERROR(EFAULT); | |
1336 | ||
1337 | return 0; | |
1338 | } |