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 | ||
55 | #include <linux/dcache.h> | |
56 | #include <linux/mount.h> | |
57 | #include <linux/namei.h> | |
58 | #include <linux/pagemap.h> | |
59 | ||
60 | /* | |
61 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
62 | * a file or fs handle. | |
63 | * | |
64 | * XFS_IOC_PATH_TO_FSHANDLE | |
65 | * returns fs handle for a mount point or path within that mount point | |
66 | * XFS_IOC_FD_TO_HANDLE | |
67 | * returns full handle for a FD opened in user space | |
68 | * XFS_IOC_PATH_TO_HANDLE | |
69 | * returns full handle for a path | |
70 | */ | |
71 | STATIC int | |
72 | xfs_find_handle( | |
73 | unsigned int cmd, | |
74 | void __user *arg) | |
75 | { | |
76 | int hsize; | |
77 | xfs_handle_t handle; | |
78 | xfs_fsop_handlereq_t hreq; | |
79 | struct inode *inode; | |
80 | struct vnode *vp; | |
81 | ||
82 | if (copy_from_user(&hreq, arg, sizeof(hreq))) | |
83 | return -XFS_ERROR(EFAULT); | |
84 | ||
85 | memset((char *)&handle, 0, sizeof(handle)); | |
86 | ||
87 | switch (cmd) { | |
88 | case XFS_IOC_PATH_TO_FSHANDLE: | |
89 | case XFS_IOC_PATH_TO_HANDLE: { | |
90 | struct nameidata nd; | |
91 | int error; | |
92 | ||
93 | error = user_path_walk_link((const char __user *)hreq.path, &nd); | |
94 | if (error) | |
95 | return error; | |
96 | ||
97 | ASSERT(nd.dentry); | |
98 | ASSERT(nd.dentry->d_inode); | |
99 | inode = igrab(nd.dentry->d_inode); | |
100 | path_release(&nd); | |
101 | break; | |
102 | } | |
103 | ||
104 | case XFS_IOC_FD_TO_HANDLE: { | |
105 | struct file *file; | |
106 | ||
107 | file = fget(hreq.fd); | |
108 | if (!file) | |
109 | return -EBADF; | |
110 | ||
111 | ASSERT(file->f_dentry); | |
112 | ASSERT(file->f_dentry->d_inode); | |
113 | inode = igrab(file->f_dentry->d_inode); | |
114 | fput(file); | |
115 | break; | |
116 | } | |
117 | ||
118 | default: | |
119 | ASSERT(0); | |
120 | return -XFS_ERROR(EINVAL); | |
121 | } | |
122 | ||
123 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
124 | /* we're not in XFS anymore, Toto */ | |
125 | iput(inode); | |
126 | return -XFS_ERROR(EINVAL); | |
127 | } | |
128 | ||
0432dab2 CH |
129 | switch (inode->i_mode & S_IFMT) { |
130 | case S_IFREG: | |
131 | case S_IFDIR: | |
132 | case S_IFLNK: | |
133 | break; | |
134 | default: | |
1da177e4 LT |
135 | iput(inode); |
136 | return -XFS_ERROR(EBADF); | |
137 | } | |
138 | ||
0432dab2 CH |
139 | /* we need the vnode */ |
140 | vp = LINVFS_GET_VP(inode); | |
141 | ||
1da177e4 LT |
142 | /* now we can grab the fsid */ |
143 | memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t)); | |
144 | hsize = sizeof(xfs_fsid_t); | |
145 | ||
146 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
147 | xfs_inode_t *ip; | |
148 | bhv_desc_t *bhv; | |
149 | int lock_mode; | |
150 | ||
151 | /* need to get access to the xfs_inode to read the generation */ | |
152 | bhv = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops); | |
153 | ASSERT(bhv); | |
154 | ip = XFS_BHVTOI(bhv); | |
155 | ASSERT(ip); | |
156 | lock_mode = xfs_ilock_map_shared(ip); | |
157 | ||
158 | /* fill in fid section of handle from inode */ | |
159 | handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) - | |
160 | sizeof(handle.ha_fid.xfs_fid_len); | |
161 | handle.ha_fid.xfs_fid_pad = 0; | |
162 | handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen; | |
163 | handle.ha_fid.xfs_fid_ino = ip->i_ino; | |
164 | ||
165 | xfs_iunlock_map_shared(ip, lock_mode); | |
166 | ||
167 | hsize = XFS_HSIZE(handle); | |
168 | } | |
169 | ||
170 | /* now copy our handle into the user buffer & write out the size */ | |
171 | if (copy_to_user(hreq.ohandle, &handle, hsize) || | |
172 | copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) { | |
173 | iput(inode); | |
174 | return -XFS_ERROR(EFAULT); | |
175 | } | |
176 | ||
177 | iput(inode); | |
178 | return 0; | |
179 | } | |
180 | ||
181 | ||
182 | /* | |
183 | * Convert userspace handle data into vnode (and inode). | |
184 | * We [ab]use the fact that all the fsop_handlereq ioctl calls | |
185 | * have a data structure argument whose first component is always | |
186 | * a xfs_fsop_handlereq_t, so we can cast to and from this type. | |
187 | * This allows us to optimise the copy_from_user calls and gives | |
188 | * a handy, shared routine. | |
189 | * | |
190 | * If no error, caller must always VN_RELE the returned vp. | |
191 | */ | |
192 | STATIC int | |
193 | xfs_vget_fsop_handlereq( | |
194 | xfs_mount_t *mp, | |
195 | struct inode *parinode, /* parent inode pointer */ | |
196 | xfs_fsop_handlereq_t *hreq, | |
197 | vnode_t **vp, | |
198 | struct inode **inode) | |
199 | { | |
200 | void __user *hanp; | |
201 | size_t hlen; | |
202 | xfs_fid_t *xfid; | |
203 | xfs_handle_t *handlep; | |
204 | xfs_handle_t handle; | |
205 | xfs_inode_t *ip; | |
206 | struct inode *inodep; | |
207 | vnode_t *vpp; | |
208 | xfs_ino_t ino; | |
209 | __u32 igen; | |
210 | int error; | |
211 | ||
212 | /* | |
213 | * Only allow handle opens under a directory. | |
214 | */ | |
215 | if (!S_ISDIR(parinode->i_mode)) | |
216 | return XFS_ERROR(ENOTDIR); | |
217 | ||
218 | hanp = hreq->ihandle; | |
219 | hlen = hreq->ihandlen; | |
220 | handlep = &handle; | |
221 | ||
222 | if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep)) | |
223 | return XFS_ERROR(EINVAL); | |
224 | if (copy_from_user(handlep, hanp, hlen)) | |
225 | return XFS_ERROR(EFAULT); | |
226 | if (hlen < sizeof(*handlep)) | |
227 | memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen); | |
228 | if (hlen > sizeof(handlep->ha_fsid)) { | |
229 | if (handlep->ha_fid.xfs_fid_len != | |
230 | (hlen - sizeof(handlep->ha_fsid) | |
231 | - sizeof(handlep->ha_fid.xfs_fid_len)) | |
232 | || handlep->ha_fid.xfs_fid_pad) | |
233 | return XFS_ERROR(EINVAL); | |
234 | } | |
235 | ||
236 | /* | |
237 | * Crack the handle, obtain the inode # & generation # | |
238 | */ | |
239 | xfid = (struct xfs_fid *)&handlep->ha_fid; | |
240 | if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) { | |
241 | ino = xfid->xfs_fid_ino; | |
242 | igen = xfid->xfs_fid_gen; | |
243 | } else { | |
244 | return XFS_ERROR(EINVAL); | |
245 | } | |
246 | ||
247 | /* | |
248 | * Get the XFS inode, building a vnode to go with it. | |
249 | */ | |
250 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
251 | if (error) | |
252 | return error; | |
253 | if (ip == NULL) | |
254 | return XFS_ERROR(EIO); | |
255 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
256 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
257 | return XFS_ERROR(ENOENT); | |
258 | } | |
259 | ||
260 | vpp = XFS_ITOV(ip); | |
261 | inodep = LINVFS_GET_IP(vpp); | |
262 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
263 | ||
264 | *vp = vpp; | |
265 | *inode = inodep; | |
266 | return 0; | |
267 | } | |
268 | ||
269 | STATIC int | |
270 | xfs_open_by_handle( | |
271 | xfs_mount_t *mp, | |
272 | void __user *arg, | |
273 | struct file *parfilp, | |
274 | struct inode *parinode) | |
275 | { | |
276 | int error; | |
277 | int new_fd; | |
278 | int permflag; | |
279 | struct file *filp; | |
280 | struct inode *inode; | |
281 | struct dentry *dentry; | |
282 | vnode_t *vp; | |
283 | xfs_fsop_handlereq_t hreq; | |
284 | ||
285 | if (!capable(CAP_SYS_ADMIN)) | |
286 | return -XFS_ERROR(EPERM); | |
287 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
288 | return -XFS_ERROR(EFAULT); | |
289 | ||
290 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
291 | if (error) | |
292 | return -error; | |
293 | ||
294 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
295 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
296 | iput(inode); | |
297 | return -XFS_ERROR(EINVAL); | |
298 | } | |
299 | ||
300 | #if BITS_PER_LONG != 32 | |
301 | hreq.oflags |= O_LARGEFILE; | |
302 | #endif | |
303 | /* Put open permission in namei format. */ | |
304 | permflag = hreq.oflags; | |
305 | if ((permflag+1) & O_ACCMODE) | |
306 | permflag++; | |
307 | if (permflag & O_TRUNC) | |
308 | permflag |= 2; | |
309 | ||
310 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
311 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
312 | iput(inode); | |
313 | return -XFS_ERROR(EPERM); | |
314 | } | |
315 | ||
316 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
317 | iput(inode); | |
318 | return -XFS_ERROR(EACCES); | |
319 | } | |
320 | ||
321 | /* Can't write directories. */ | |
322 | if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { | |
323 | iput(inode); | |
324 | return -XFS_ERROR(EISDIR); | |
325 | } | |
326 | ||
327 | if ((new_fd = get_unused_fd()) < 0) { | |
328 | iput(inode); | |
329 | return new_fd; | |
330 | } | |
331 | ||
332 | dentry = d_alloc_anon(inode); | |
333 | if (dentry == NULL) { | |
334 | iput(inode); | |
335 | put_unused_fd(new_fd); | |
336 | return -XFS_ERROR(ENOMEM); | |
337 | } | |
338 | ||
339 | /* Ensure umount returns EBUSY on umounts while this file is open. */ | |
340 | mntget(parfilp->f_vfsmnt); | |
341 | ||
342 | /* Create file pointer. */ | |
343 | filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags); | |
344 | if (IS_ERR(filp)) { | |
345 | put_unused_fd(new_fd); | |
346 | return -XFS_ERROR(-PTR_ERR(filp)); | |
347 | } | |
348 | if (inode->i_mode & S_IFREG) | |
349 | filp->f_op = &linvfs_invis_file_operations; | |
350 | ||
351 | fd_install(new_fd, filp); | |
352 | return new_fd; | |
353 | } | |
354 | ||
355 | STATIC int | |
356 | xfs_readlink_by_handle( | |
357 | xfs_mount_t *mp, | |
358 | void __user *arg, | |
359 | struct file *parfilp, | |
360 | struct inode *parinode) | |
361 | { | |
362 | int error; | |
363 | struct iovec aiov; | |
364 | struct uio auio; | |
365 | struct inode *inode; | |
366 | xfs_fsop_handlereq_t hreq; | |
367 | vnode_t *vp; | |
368 | __u32 olen; | |
369 | ||
370 | if (!capable(CAP_SYS_ADMIN)) | |
371 | return -XFS_ERROR(EPERM); | |
372 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) | |
373 | return -XFS_ERROR(EFAULT); | |
374 | ||
375 | error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode); | |
376 | if (error) | |
377 | return -error; | |
378 | ||
379 | /* Restrict this handle operation to symlinks only. */ | |
0432dab2 | 380 | if (!S_ISLNK(inode->i_mode)) { |
1da177e4 LT |
381 | VN_RELE(vp); |
382 | return -XFS_ERROR(EINVAL); | |
383 | } | |
384 | ||
385 | if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) { | |
386 | VN_RELE(vp); | |
387 | return -XFS_ERROR(EFAULT); | |
388 | } | |
389 | aiov.iov_len = olen; | |
390 | aiov.iov_base = hreq.ohandle; | |
391 | ||
392 | auio.uio_iov = &aiov; | |
393 | auio.uio_iovcnt = 1; | |
394 | auio.uio_offset = 0; | |
395 | auio.uio_segflg = UIO_USERSPACE; | |
396 | auio.uio_resid = olen; | |
397 | ||
398 | VOP_READLINK(vp, &auio, IO_INVIS, NULL, error); | |
399 | ||
400 | VN_RELE(vp); | |
401 | return (olen - auio.uio_resid); | |
402 | } | |
403 | ||
404 | STATIC int | |
405 | xfs_fssetdm_by_handle( | |
406 | xfs_mount_t *mp, | |
407 | void __user *arg, | |
408 | struct file *parfilp, | |
409 | struct inode *parinode) | |
410 | { | |
411 | int error; | |
412 | struct fsdmidata fsd; | |
413 | xfs_fsop_setdm_handlereq_t dmhreq; | |
414 | struct inode *inode; | |
415 | bhv_desc_t *bdp; | |
416 | vnode_t *vp; | |
417 | ||
418 | if (!capable(CAP_MKNOD)) | |
419 | return -XFS_ERROR(EPERM); | |
420 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
421 | return -XFS_ERROR(EFAULT); | |
422 | ||
423 | error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode); | |
424 | if (error) | |
425 | return -error; | |
426 | ||
427 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) { | |
428 | VN_RELE(vp); | |
429 | return -XFS_ERROR(EPERM); | |
430 | } | |
431 | ||
432 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
433 | VN_RELE(vp); | |
434 | return -XFS_ERROR(EFAULT); | |
435 | } | |
436 | ||
437 | bdp = bhv_base_unlocked(VN_BHV_HEAD(vp)); | |
438 | error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL); | |
439 | ||
440 | VN_RELE(vp); | |
441 | if (error) | |
442 | return -error; | |
443 | return 0; | |
444 | } | |
445 | ||
446 | STATIC int | |
447 | xfs_attrlist_by_handle( | |
448 | xfs_mount_t *mp, | |
449 | void __user *arg, | |
450 | struct file *parfilp, | |
451 | struct inode *parinode) | |
452 | { | |
453 | int error; | |
454 | attrlist_cursor_kern_t *cursor; | |
455 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
456 | struct inode *inode; | |
457 | vnode_t *vp; | |
458 | char *kbuf; | |
459 | ||
460 | if (!capable(CAP_SYS_ADMIN)) | |
461 | return -XFS_ERROR(EPERM); | |
462 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
463 | return -XFS_ERROR(EFAULT); | |
464 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
465 | return -XFS_ERROR(EINVAL); | |
466 | ||
467 | error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, | |
468 | &vp, &inode); | |
469 | if (error) | |
470 | goto out; | |
471 | ||
472 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
473 | if (!kbuf) | |
474 | goto out_vn_rele; | |
475 | ||
476 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
477 | VOP_ATTR_LIST(vp, kbuf, al_hreq.buflen, al_hreq.flags, | |
478 | cursor, NULL, error); | |
479 | if (error) | |
480 | goto out_kfree; | |
481 | ||
482 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
483 | error = -EFAULT; | |
484 | ||
485 | out_kfree: | |
486 | kfree(kbuf); | |
487 | out_vn_rele: | |
488 | VN_RELE(vp); | |
489 | out: | |
490 | return -error; | |
491 | } | |
492 | ||
493 | STATIC int | |
494 | xfs_attrmulti_attr_get( | |
495 | struct vnode *vp, | |
496 | char *name, | |
497 | char __user *ubuf, | |
498 | __uint32_t *len, | |
499 | __uint32_t flags) | |
500 | { | |
501 | char *kbuf; | |
502 | int error = EFAULT; | |
503 | ||
504 | if (*len > XATTR_SIZE_MAX) | |
505 | return EINVAL; | |
506 | kbuf = kmalloc(*len, GFP_KERNEL); | |
507 | if (!kbuf) | |
508 | return ENOMEM; | |
509 | ||
510 | VOP_ATTR_GET(vp, name, kbuf, len, flags, NULL, error); | |
511 | if (error) | |
512 | goto out_kfree; | |
513 | ||
514 | if (copy_to_user(ubuf, kbuf, *len)) | |
515 | error = EFAULT; | |
516 | ||
517 | out_kfree: | |
518 | kfree(kbuf); | |
519 | return error; | |
520 | } | |
521 | ||
522 | STATIC int | |
523 | xfs_attrmulti_attr_set( | |
524 | struct vnode *vp, | |
525 | char *name, | |
526 | const char __user *ubuf, | |
527 | __uint32_t len, | |
528 | __uint32_t flags) | |
529 | { | |
530 | char *kbuf; | |
531 | int error = EFAULT; | |
532 | ||
3542c6e1 CH |
533 | if (IS_RDONLY(&vp->v_inode)) |
534 | return -EROFS; | |
1da177e4 LT |
535 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
536 | return EPERM; | |
537 | if (len > XATTR_SIZE_MAX) | |
538 | return EINVAL; | |
539 | ||
540 | kbuf = kmalloc(len, GFP_KERNEL); | |
541 | if (!kbuf) | |
542 | return ENOMEM; | |
543 | ||
544 | if (copy_from_user(kbuf, ubuf, len)) | |
545 | goto out_kfree; | |
546 | ||
547 | VOP_ATTR_SET(vp, name, kbuf, len, flags, NULL, error); | |
548 | ||
549 | out_kfree: | |
550 | kfree(kbuf); | |
551 | return error; | |
552 | } | |
553 | ||
554 | STATIC int | |
555 | xfs_attrmulti_attr_remove( | |
556 | struct vnode *vp, | |
557 | char *name, | |
558 | __uint32_t flags) | |
559 | { | |
560 | int error; | |
561 | ||
3542c6e1 CH |
562 | |
563 | if (IS_RDONLY(&vp->v_inode)) | |
564 | return -EROFS; | |
1da177e4 LT |
565 | if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode)) |
566 | return EPERM; | |
567 | ||
568 | VOP_ATTR_REMOVE(vp, name, flags, NULL, error); | |
569 | return error; | |
570 | } | |
571 | ||
572 | STATIC int | |
573 | xfs_attrmulti_by_handle( | |
574 | xfs_mount_t *mp, | |
575 | void __user *arg, | |
576 | struct file *parfilp, | |
577 | struct inode *parinode) | |
578 | { | |
579 | int error; | |
580 | xfs_attr_multiop_t *ops; | |
581 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
582 | struct inode *inode; | |
583 | vnode_t *vp; | |
584 | unsigned int i, size; | |
585 | char *attr_name; | |
586 | ||
587 | if (!capable(CAP_SYS_ADMIN)) | |
588 | return -XFS_ERROR(EPERM); | |
589 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
590 | return -XFS_ERROR(EFAULT); | |
591 | ||
592 | error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode); | |
593 | if (error) | |
594 | goto out; | |
595 | ||
596 | error = E2BIG; | |
597 | size = am_hreq.opcount * sizeof(attr_multiop_t); | |
598 | if (!size || size > 16 * PAGE_SIZE) | |
599 | goto out_vn_rele; | |
600 | ||
601 | error = ENOMEM; | |
602 | ops = kmalloc(size, GFP_KERNEL); | |
603 | if (!ops) | |
604 | goto out_vn_rele; | |
605 | ||
606 | error = EFAULT; | |
607 | if (copy_from_user(ops, am_hreq.ops, size)) | |
608 | goto out_kfree_ops; | |
609 | ||
610 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
611 | if (!attr_name) | |
612 | goto out_kfree_ops; | |
613 | ||
614 | ||
615 | error = 0; | |
616 | for (i = 0; i < am_hreq.opcount; i++) { | |
617 | ops[i].am_error = strncpy_from_user(attr_name, | |
618 | ops[i].am_attrname, MAXNAMELEN); | |
619 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
620 | error = -ERANGE; | |
621 | if (ops[i].am_error < 0) | |
622 | break; | |
623 | ||
624 | switch (ops[i].am_opcode) { | |
625 | case ATTR_OP_GET: | |
626 | ops[i].am_error = xfs_attrmulti_attr_get(vp, | |
627 | attr_name, ops[i].am_attrvalue, | |
628 | &ops[i].am_length, ops[i].am_flags); | |
629 | break; | |
630 | case ATTR_OP_SET: | |
631 | ops[i].am_error = xfs_attrmulti_attr_set(vp, | |
632 | attr_name, ops[i].am_attrvalue, | |
633 | ops[i].am_length, ops[i].am_flags); | |
634 | break; | |
635 | case ATTR_OP_REMOVE: | |
636 | ops[i].am_error = xfs_attrmulti_attr_remove(vp, | |
637 | attr_name, ops[i].am_flags); | |
638 | break; | |
639 | default: | |
640 | ops[i].am_error = EINVAL; | |
641 | } | |
642 | } | |
643 | ||
644 | if (copy_to_user(am_hreq.ops, ops, size)) | |
645 | error = XFS_ERROR(EFAULT); | |
646 | ||
647 | kfree(attr_name); | |
648 | out_kfree_ops: | |
649 | kfree(ops); | |
650 | out_vn_rele: | |
651 | VN_RELE(vp); | |
652 | out: | |
653 | return -error; | |
654 | } | |
655 | ||
656 | /* prototypes for a few of the stack-hungry cases that have | |
657 | * their own functions. Functions are defined after their use | |
658 | * so gcc doesn't get fancy and inline them with -03 */ | |
659 | ||
660 | STATIC int | |
661 | xfs_ioc_space( | |
662 | bhv_desc_t *bdp, | |
663 | vnode_t *vp, | |
664 | struct file *filp, | |
665 | int flags, | |
666 | unsigned int cmd, | |
667 | void __user *arg); | |
668 | ||
669 | STATIC int | |
670 | xfs_ioc_bulkstat( | |
671 | xfs_mount_t *mp, | |
672 | unsigned int cmd, | |
673 | void __user *arg); | |
674 | ||
675 | STATIC int | |
676 | xfs_ioc_fsgeometry_v1( | |
677 | xfs_mount_t *mp, | |
678 | void __user *arg); | |
679 | ||
680 | STATIC int | |
681 | xfs_ioc_fsgeometry( | |
682 | xfs_mount_t *mp, | |
683 | void __user *arg); | |
684 | ||
685 | STATIC int | |
686 | xfs_ioc_xattr( | |
687 | vnode_t *vp, | |
688 | xfs_inode_t *ip, | |
689 | struct file *filp, | |
690 | unsigned int cmd, | |
691 | void __user *arg); | |
692 | ||
693 | STATIC int | |
694 | xfs_ioc_getbmap( | |
695 | bhv_desc_t *bdp, | |
696 | struct file *filp, | |
697 | int flags, | |
698 | unsigned int cmd, | |
699 | void __user *arg); | |
700 | ||
701 | STATIC int | |
702 | xfs_ioc_getbmapx( | |
703 | bhv_desc_t *bdp, | |
704 | void __user *arg); | |
705 | ||
706 | int | |
707 | xfs_ioctl( | |
708 | bhv_desc_t *bdp, | |
709 | struct inode *inode, | |
710 | struct file *filp, | |
711 | int ioflags, | |
712 | unsigned int cmd, | |
713 | void __user *arg) | |
714 | { | |
715 | int error; | |
716 | vnode_t *vp; | |
717 | xfs_inode_t *ip; | |
718 | xfs_mount_t *mp; | |
719 | ||
720 | vp = LINVFS_GET_VP(inode); | |
721 | ||
722 | vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address); | |
723 | ||
724 | ip = XFS_BHVTOI(bdp); | |
725 | mp = ip->i_mount; | |
726 | ||
727 | switch (cmd) { | |
728 | ||
729 | case XFS_IOC_ALLOCSP: | |
730 | case XFS_IOC_FREESP: | |
731 | case XFS_IOC_RESVSP: | |
732 | case XFS_IOC_UNRESVSP: | |
733 | case XFS_IOC_ALLOCSP64: | |
734 | case XFS_IOC_FREESP64: | |
735 | case XFS_IOC_RESVSP64: | |
736 | case XFS_IOC_UNRESVSP64: | |
737 | /* | |
738 | * Only allow the sys admin to reserve space unless | |
739 | * unwritten extents are enabled. | |
740 | */ | |
741 | if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) && | |
742 | !capable(CAP_SYS_ADMIN)) | |
743 | return -EPERM; | |
744 | ||
745 | return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg); | |
746 | ||
747 | case XFS_IOC_DIOINFO: { | |
748 | struct dioattr da; | |
749 | xfs_buftarg_t *target = | |
750 | (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? | |
751 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
752 | ||
ce8e922c | 753 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; |
0d14824c | 754 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1da177e4 LT |
755 | |
756 | if (copy_to_user(arg, &da, sizeof(da))) | |
757 | return -XFS_ERROR(EFAULT); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
762 | case XFS_IOC_FSBULKSTAT: | |
763 | case XFS_IOC_FSINUMBERS: | |
764 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
765 | ||
766 | case XFS_IOC_FSGEOMETRY_V1: | |
767 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
768 | ||
769 | case XFS_IOC_FSGEOMETRY: | |
770 | return xfs_ioc_fsgeometry(mp, arg); | |
771 | ||
772 | case XFS_IOC_GETVERSION: | |
773 | case XFS_IOC_GETXFLAGS: | |
774 | case XFS_IOC_SETXFLAGS: | |
775 | case XFS_IOC_FSGETXATTR: | |
776 | case XFS_IOC_FSSETXATTR: | |
777 | case XFS_IOC_FSGETXATTRA: | |
778 | return xfs_ioc_xattr(vp, ip, filp, cmd, arg); | |
779 | ||
780 | case XFS_IOC_FSSETDM: { | |
781 | struct fsdmidata dmi; | |
782 | ||
783 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
784 | return -XFS_ERROR(EFAULT); | |
785 | ||
786 | error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate, | |
787 | NULL); | |
788 | return -error; | |
789 | } | |
790 | ||
791 | case XFS_IOC_GETBMAP: | |
792 | case XFS_IOC_GETBMAPA: | |
793 | return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg); | |
794 | ||
795 | case XFS_IOC_GETBMAPX: | |
796 | return xfs_ioc_getbmapx(bdp, arg); | |
797 | ||
798 | case XFS_IOC_FD_TO_HANDLE: | |
799 | case XFS_IOC_PATH_TO_HANDLE: | |
800 | case XFS_IOC_PATH_TO_FSHANDLE: | |
801 | return xfs_find_handle(cmd, arg); | |
802 | ||
803 | case XFS_IOC_OPEN_BY_HANDLE: | |
804 | return xfs_open_by_handle(mp, arg, filp, inode); | |
805 | ||
806 | case XFS_IOC_FSSETDM_BY_HANDLE: | |
807 | return xfs_fssetdm_by_handle(mp, arg, filp, inode); | |
808 | ||
809 | case XFS_IOC_READLINK_BY_HANDLE: | |
810 | return xfs_readlink_by_handle(mp, arg, filp, inode); | |
811 | ||
812 | case XFS_IOC_ATTRLIST_BY_HANDLE: | |
813 | return xfs_attrlist_by_handle(mp, arg, filp, inode); | |
814 | ||
815 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
816 | return xfs_attrmulti_by_handle(mp, arg, filp, inode); | |
817 | ||
818 | case XFS_IOC_SWAPEXT: { | |
819 | error = xfs_swapext((struct xfs_swapext __user *)arg); | |
820 | return -error; | |
821 | } | |
822 | ||
823 | case XFS_IOC_FSCOUNTS: { | |
824 | xfs_fsop_counts_t out; | |
825 | ||
826 | error = xfs_fs_counts(mp, &out); | |
827 | if (error) | |
828 | return -error; | |
829 | ||
830 | if (copy_to_user(arg, &out, sizeof(out))) | |
831 | return -XFS_ERROR(EFAULT); | |
832 | return 0; | |
833 | } | |
834 | ||
835 | case XFS_IOC_SET_RESBLKS: { | |
836 | xfs_fsop_resblks_t inout; | |
837 | __uint64_t in; | |
838 | ||
839 | if (!capable(CAP_SYS_ADMIN)) | |
840 | return -EPERM; | |
841 | ||
842 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
843 | return -XFS_ERROR(EFAULT); | |
844 | ||
845 | /* input parameter is passed in resblks field of structure */ | |
846 | in = inout.resblks; | |
847 | error = xfs_reserve_blocks(mp, &in, &inout); | |
848 | if (error) | |
849 | return -error; | |
850 | ||
851 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
852 | return -XFS_ERROR(EFAULT); | |
853 | return 0; | |
854 | } | |
855 | ||
856 | case XFS_IOC_GET_RESBLKS: { | |
857 | xfs_fsop_resblks_t out; | |
858 | ||
859 | if (!capable(CAP_SYS_ADMIN)) | |
860 | return -EPERM; | |
861 | ||
862 | error = xfs_reserve_blocks(mp, NULL, &out); | |
863 | if (error) | |
864 | return -error; | |
865 | ||
866 | if (copy_to_user(arg, &out, sizeof(out))) | |
867 | return -XFS_ERROR(EFAULT); | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
872 | case XFS_IOC_FSGROWFSDATA: { | |
873 | xfs_growfs_data_t in; | |
874 | ||
875 | if (!capable(CAP_SYS_ADMIN)) | |
876 | return -EPERM; | |
877 | ||
878 | if (copy_from_user(&in, arg, sizeof(in))) | |
879 | return -XFS_ERROR(EFAULT); | |
880 | ||
881 | error = xfs_growfs_data(mp, &in); | |
882 | return -error; | |
883 | } | |
884 | ||
885 | case XFS_IOC_FSGROWFSLOG: { | |
886 | xfs_growfs_log_t in; | |
887 | ||
888 | if (!capable(CAP_SYS_ADMIN)) | |
889 | return -EPERM; | |
890 | ||
891 | if (copy_from_user(&in, arg, sizeof(in))) | |
892 | return -XFS_ERROR(EFAULT); | |
893 | ||
894 | error = xfs_growfs_log(mp, &in); | |
895 | return -error; | |
896 | } | |
897 | ||
898 | case XFS_IOC_FSGROWFSRT: { | |
899 | xfs_growfs_rt_t in; | |
900 | ||
901 | if (!capable(CAP_SYS_ADMIN)) | |
902 | return -EPERM; | |
903 | ||
904 | if (copy_from_user(&in, arg, sizeof(in))) | |
905 | return -XFS_ERROR(EFAULT); | |
906 | ||
907 | error = xfs_growfs_rt(mp, &in); | |
908 | return -error; | |
909 | } | |
910 | ||
911 | case XFS_IOC_FREEZE: | |
912 | if (!capable(CAP_SYS_ADMIN)) | |
913 | return -EPERM; | |
914 | ||
915 | if (inode->i_sb->s_frozen == SB_UNFROZEN) | |
916 | freeze_bdev(inode->i_sb->s_bdev); | |
917 | return 0; | |
918 | ||
919 | case XFS_IOC_THAW: | |
920 | if (!capable(CAP_SYS_ADMIN)) | |
921 | return -EPERM; | |
922 | if (inode->i_sb->s_frozen != SB_UNFROZEN) | |
923 | thaw_bdev(inode->i_sb->s_bdev, inode->i_sb); | |
924 | return 0; | |
925 | ||
926 | case XFS_IOC_GOINGDOWN: { | |
927 | __uint32_t in; | |
928 | ||
929 | if (!capable(CAP_SYS_ADMIN)) | |
930 | return -EPERM; | |
931 | ||
932 | if (get_user(in, (__uint32_t __user *)arg)) | |
933 | return -XFS_ERROR(EFAULT); | |
934 | ||
935 | error = xfs_fs_goingdown(mp, in); | |
936 | return -error; | |
937 | } | |
938 | ||
939 | case XFS_IOC_ERROR_INJECTION: { | |
940 | xfs_error_injection_t in; | |
941 | ||
942 | if (!capable(CAP_SYS_ADMIN)) | |
943 | return -EPERM; | |
944 | ||
945 | if (copy_from_user(&in, arg, sizeof(in))) | |
946 | return -XFS_ERROR(EFAULT); | |
947 | ||
948 | error = xfs_errortag_add(in.errtag, mp); | |
949 | return -error; | |
950 | } | |
951 | ||
952 | case XFS_IOC_ERROR_CLEARALL: | |
953 | if (!capable(CAP_SYS_ADMIN)) | |
954 | return -EPERM; | |
955 | ||
956 | error = xfs_errortag_clearall(mp); | |
957 | return -error; | |
958 | ||
959 | default: | |
960 | return -ENOTTY; | |
961 | } | |
962 | } | |
963 | ||
964 | STATIC int | |
965 | xfs_ioc_space( | |
966 | bhv_desc_t *bdp, | |
967 | vnode_t *vp, | |
968 | struct file *filp, | |
969 | int ioflags, | |
970 | unsigned int cmd, | |
971 | void __user *arg) | |
972 | { | |
973 | xfs_flock64_t bf; | |
974 | int attr_flags = 0; | |
975 | int error; | |
976 | ||
977 | if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND)) | |
978 | return -XFS_ERROR(EPERM); | |
979 | ||
ad4a8ac4 | 980 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
981 | return -XFS_ERROR(EBADF); |
982 | ||
0432dab2 | 983 | if (!VN_ISREG(vp)) |
1da177e4 LT |
984 | return -XFS_ERROR(EINVAL); |
985 | ||
986 | if (copy_from_user(&bf, arg, sizeof(bf))) | |
987 | return -XFS_ERROR(EFAULT); | |
988 | ||
989 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
990 | attr_flags |= ATTR_NONBLOCK; | |
991 | if (ioflags & IO_INVIS) | |
992 | attr_flags |= ATTR_DMI; | |
993 | ||
994 | error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos, | |
995 | NULL, attr_flags); | |
996 | return -error; | |
997 | } | |
998 | ||
999 | STATIC int | |
1000 | xfs_ioc_bulkstat( | |
1001 | xfs_mount_t *mp, | |
1002 | unsigned int cmd, | |
1003 | void __user *arg) | |
1004 | { | |
1005 | xfs_fsop_bulkreq_t bulkreq; | |
1006 | int count; /* # of records returned */ | |
1007 | xfs_ino_t inlast; /* last inode number */ | |
1008 | int done; | |
1009 | int error; | |
1010 | ||
1011 | /* done = 1 if there are more stats to get and if bulkstat */ | |
1012 | /* should be called again (unused here, but used in dmapi) */ | |
1013 | ||
1014 | if (!capable(CAP_SYS_ADMIN)) | |
1015 | return -EPERM; | |
1016 | ||
1017 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1018 | return -XFS_ERROR(EIO); | |
1019 | ||
1020 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
1021 | return -XFS_ERROR(EFAULT); | |
1022 | ||
1023 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
1024 | return -XFS_ERROR(EFAULT); | |
1025 | ||
1026 | if ((count = bulkreq.icount) <= 0) | |
1027 | return -XFS_ERROR(EINVAL); | |
1028 | ||
1029 | if (cmd == XFS_IOC_FSINUMBERS) | |
1030 | error = xfs_inumbers(mp, &inlast, &count, | |
1031 | bulkreq.ubuffer); | |
1032 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) | |
1033 | error = xfs_bulkstat_single(mp, &inlast, | |
1034 | bulkreq.ubuffer, &done); | |
1035 | else { /* XFS_IOC_FSBULKSTAT */ | |
1036 | if (count == 1 && inlast != 0) { | |
1037 | inlast++; | |
1038 | error = xfs_bulkstat_single(mp, &inlast, | |
1039 | bulkreq.ubuffer, &done); | |
1040 | } else { | |
1041 | error = xfs_bulkstat(mp, &inlast, &count, | |
1042 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
1043 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
1044 | BULKSTAT_FG_QUICK, &done); | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | if (error) | |
1049 | return -error; | |
1050 | ||
1051 | if (bulkreq.ocount != NULL) { | |
1052 | if (copy_to_user(bulkreq.lastip, &inlast, | |
1053 | sizeof(xfs_ino_t))) | |
1054 | return -XFS_ERROR(EFAULT); | |
1055 | ||
1056 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
1057 | return -XFS_ERROR(EFAULT); | |
1058 | } | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | STATIC int | |
1064 | xfs_ioc_fsgeometry_v1( | |
1065 | xfs_mount_t *mp, | |
1066 | void __user *arg) | |
1067 | { | |
1068 | xfs_fsop_geom_v1_t fsgeo; | |
1069 | int error; | |
1070 | ||
1071 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
1072 | if (error) | |
1073 | return -error; | |
1074 | ||
1075 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1076 | return -XFS_ERROR(EFAULT); | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | STATIC int | |
1081 | xfs_ioc_fsgeometry( | |
1082 | xfs_mount_t *mp, | |
1083 | void __user *arg) | |
1084 | { | |
1085 | xfs_fsop_geom_t fsgeo; | |
1086 | int error; | |
1087 | ||
1088 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
1089 | if (error) | |
1090 | return -error; | |
1091 | ||
1092 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
1093 | return -XFS_ERROR(EFAULT); | |
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | /* | |
1098 | * Linux extended inode flags interface. | |
1099 | */ | |
1100 | #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */ | |
1101 | #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */ | |
1102 | #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */ | |
1103 | #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */ | |
1104 | #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */ | |
1105 | ||
1106 | STATIC unsigned int | |
1107 | xfs_merge_ioc_xflags( | |
1108 | unsigned int flags, | |
1109 | unsigned int start) | |
1110 | { | |
1111 | unsigned int xflags = start; | |
1112 | ||
1113 | if (flags & LINUX_XFLAG_IMMUTABLE) | |
1114 | xflags |= XFS_XFLAG_IMMUTABLE; | |
1115 | else | |
1116 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
1117 | if (flags & LINUX_XFLAG_APPEND) | |
1118 | xflags |= XFS_XFLAG_APPEND; | |
1119 | else | |
1120 | xflags &= ~XFS_XFLAG_APPEND; | |
1121 | if (flags & LINUX_XFLAG_SYNC) | |
1122 | xflags |= XFS_XFLAG_SYNC; | |
1123 | else | |
1124 | xflags &= ~XFS_XFLAG_SYNC; | |
1125 | if (flags & LINUX_XFLAG_NOATIME) | |
1126 | xflags |= XFS_XFLAG_NOATIME; | |
1127 | else | |
1128 | xflags &= ~XFS_XFLAG_NOATIME; | |
1129 | if (flags & LINUX_XFLAG_NODUMP) | |
1130 | xflags |= XFS_XFLAG_NODUMP; | |
1131 | else | |
1132 | xflags &= ~XFS_XFLAG_NODUMP; | |
1133 | ||
1134 | return xflags; | |
1135 | } | |
1136 | ||
1137 | STATIC unsigned int | |
1138 | xfs_di2lxflags( | |
1139 | __uint16_t di_flags) | |
1140 | { | |
1141 | unsigned int flags = 0; | |
1142 | ||
1143 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
1144 | flags |= LINUX_XFLAG_IMMUTABLE; | |
1145 | if (di_flags & XFS_DIFLAG_APPEND) | |
1146 | flags |= LINUX_XFLAG_APPEND; | |
1147 | if (di_flags & XFS_DIFLAG_SYNC) | |
1148 | flags |= LINUX_XFLAG_SYNC; | |
1149 | if (di_flags & XFS_DIFLAG_NOATIME) | |
1150 | flags |= LINUX_XFLAG_NOATIME; | |
1151 | if (di_flags & XFS_DIFLAG_NODUMP) | |
1152 | flags |= LINUX_XFLAG_NODUMP; | |
1153 | return flags; | |
1154 | } | |
1155 | ||
1156 | STATIC int | |
1157 | xfs_ioc_xattr( | |
1158 | vnode_t *vp, | |
1159 | xfs_inode_t *ip, | |
1160 | struct file *filp, | |
1161 | unsigned int cmd, | |
1162 | void __user *arg) | |
1163 | { | |
1164 | struct fsxattr fa; | |
1165 | vattr_t va; | |
1166 | int error; | |
1167 | int attr_flags; | |
1168 | unsigned int flags; | |
1169 | ||
1170 | switch (cmd) { | |
1171 | case XFS_IOC_FSGETXATTR: { | |
77bc5beb NS |
1172 | va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1173 | XFS_AT_NEXTENTS | XFS_AT_PROJID; | |
1da177e4 LT |
1174 | VOP_GETATTR(vp, &va, 0, NULL, error); |
1175 | if (error) | |
1176 | return -error; | |
1177 | ||
1178 | fa.fsx_xflags = va.va_xflags; | |
1179 | fa.fsx_extsize = va.va_extsize; | |
1180 | fa.fsx_nextents = va.va_nextents; | |
77bc5beb | 1181 | fa.fsx_projid = va.va_projid; |
1da177e4 LT |
1182 | |
1183 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
1184 | return -XFS_ERROR(EFAULT); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | case XFS_IOC_FSSETXATTR: { | |
1189 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1190 | return -XFS_ERROR(EFAULT); | |
1191 | ||
1192 | attr_flags = 0; | |
1193 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1194 | attr_flags |= ATTR_NONBLOCK; | |
1195 | ||
77bc5beb | 1196 | va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID; |
1da177e4 LT |
1197 | va.va_xflags = fa.fsx_xflags; |
1198 | va.va_extsize = fa.fsx_extsize; | |
77bc5beb | 1199 | va.va_projid = fa.fsx_projid; |
1da177e4 LT |
1200 | |
1201 | VOP_SETATTR(vp, &va, attr_flags, NULL, error); | |
1202 | if (!error) | |
1203 | vn_revalidate(vp); /* update Linux inode flags */ | |
1204 | return -error; | |
1205 | } | |
1206 | ||
1207 | case XFS_IOC_FSGETXATTRA: { | |
77bc5beb NS |
1208 | va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \ |
1209 | XFS_AT_ANEXTENTS | XFS_AT_PROJID; | |
1da177e4 LT |
1210 | VOP_GETATTR(vp, &va, 0, NULL, error); |
1211 | if (error) | |
1212 | return -error; | |
1213 | ||
1214 | fa.fsx_xflags = va.va_xflags; | |
1215 | fa.fsx_extsize = va.va_extsize; | |
1216 | fa.fsx_nextents = va.va_anextents; | |
77bc5beb | 1217 | fa.fsx_projid = va.va_projid; |
1da177e4 LT |
1218 | |
1219 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
1220 | return -XFS_ERROR(EFAULT); | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | case XFS_IOC_GETXFLAGS: { | |
1225 | flags = xfs_di2lxflags(ip->i_d.di_flags); | |
1226 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1227 | return -XFS_ERROR(EFAULT); | |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | case XFS_IOC_SETXFLAGS: { | |
1232 | if (copy_from_user(&flags, arg, sizeof(flags))) | |
1233 | return -XFS_ERROR(EFAULT); | |
1234 | ||
1235 | if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \ | |
1236 | LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \ | |
1237 | LINUX_XFLAG_SYNC)) | |
1238 | return -XFS_ERROR(EOPNOTSUPP); | |
1239 | ||
1240 | attr_flags = 0; | |
1241 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) | |
1242 | attr_flags |= ATTR_NONBLOCK; | |
1243 | ||
1244 | va.va_mask = XFS_AT_XFLAGS; | |
1245 | va.va_xflags = xfs_merge_ioc_xflags(flags, | |
1246 | xfs_ip2xflags(ip)); | |
1247 | ||
1248 | VOP_SETATTR(vp, &va, attr_flags, NULL, error); | |
1249 | if (!error) | |
1250 | vn_revalidate(vp); /* update Linux inode flags */ | |
1251 | return -error; | |
1252 | } | |
1253 | ||
1254 | case XFS_IOC_GETVERSION: { | |
1255 | flags = LINVFS_GET_IP(vp)->i_generation; | |
1256 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1257 | return -XFS_ERROR(EFAULT); | |
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | default: | |
1262 | return -ENOTTY; | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | STATIC int | |
1267 | xfs_ioc_getbmap( | |
1268 | bhv_desc_t *bdp, | |
1269 | struct file *filp, | |
1270 | int ioflags, | |
1271 | unsigned int cmd, | |
1272 | void __user *arg) | |
1273 | { | |
1274 | struct getbmap bm; | |
1275 | int iflags; | |
1276 | int error; | |
1277 | ||
1278 | if (copy_from_user(&bm, arg, sizeof(bm))) | |
1279 | return -XFS_ERROR(EFAULT); | |
1280 | ||
1281 | if (bm.bmv_count < 2) | |
1282 | return -XFS_ERROR(EINVAL); | |
1283 | ||
1284 | iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); | |
1285 | if (ioflags & IO_INVIS) | |
1286 | iflags |= BMV_IF_NO_DMAPI_READ; | |
1287 | ||
1288 | error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags); | |
1289 | if (error) | |
1290 | return -error; | |
1291 | ||
1292 | if (copy_to_user(arg, &bm, sizeof(bm))) | |
1293 | return -XFS_ERROR(EFAULT); | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | STATIC int | |
1298 | xfs_ioc_getbmapx( | |
1299 | bhv_desc_t *bdp, | |
1300 | void __user *arg) | |
1301 | { | |
1302 | struct getbmapx bmx; | |
1303 | struct getbmap bm; | |
1304 | int iflags; | |
1305 | int error; | |
1306 | ||
1307 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1308 | return -XFS_ERROR(EFAULT); | |
1309 | ||
1310 | if (bmx.bmv_count < 2) | |
1311 | return -XFS_ERROR(EINVAL); | |
1312 | ||
1313 | /* | |
1314 | * Map input getbmapx structure to a getbmap | |
1315 | * structure for xfs_getbmap. | |
1316 | */ | |
1317 | GETBMAP_CONVERT(bmx, bm); | |
1318 | ||
1319 | iflags = bmx.bmv_iflags; | |
1320 | ||
1321 | if (iflags & (~BMV_IF_VALID)) | |
1322 | return -XFS_ERROR(EINVAL); | |
1323 | ||
1324 | iflags |= BMV_IF_EXTENDED; | |
1325 | ||
1326 | error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags); | |
1327 | if (error) | |
1328 | return -error; | |
1329 | ||
1330 | GETBMAP_CONVERT(bm, bmx); | |
1331 | ||
1332 | if (copy_to_user(arg, &bmx, sizeof(bmx))) | |
1333 | return -XFS_ERROR(EFAULT); | |
1334 | ||
1335 | return 0; | |
1336 | } |