projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
[deliverable/linux.git] / fs / xfs / linux-2.6 / xfs_ioctl32.c
CommitLineData
1da177e4 1/*
7b718769
NS		 2 * Copyright (c) 2004-2005 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 <linux/compat.h>
1da177e4 19#include <linux/ioctl.h>
1da177e4 20#include <asm/uaccess.h>
1da177e4 21#include "xfs.h"
1da177e4 22#include "xfs_fs.h"
faa63e95
MM		 23#include "xfs_bit.h"
24#include "xfs_log.h"
25#include "xfs_inum.h"
26#include "xfs_trans.h"
27#include "xfs_sb.h"
28#include "xfs_ag.h"
29#include "xfs_dir2.h"
30#include "xfs_dmapi.h"
31#include "xfs_mount.h"
32#include "xfs_bmap_btree.h"
33#include "xfs_attr_sf.h"
34#include "xfs_dir2_sf.h"
1da177e4 35#include "xfs_vnode.h"
faa63e95
MM		 36#include "xfs_dinode.h"
37#include "xfs_inode.h"
38#include "xfs_itable.h"
39#include "xfs_error.h"
1da177e4 40#include "xfs_dfrag.h"
739bfb2a 41#include "xfs_vnodeops.h"
d5547f9f 42#include "xfs_fsops.h"
471d5910 43#include "xfs_alloc.h"
44#include "xfs_rtalloc.h"
ebeecd2b 45#include "xfs_attr.h"
d5547f9f 46#include "xfs_ioctl.h"
a8272ce0 47#include "xfs_ioctl32.h"
1da177e4 48
526c420c
ES		 49#define _NATIVE_IOC(cmd, type) \
50 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
51
ffae263a 52#ifdef BROKEN_X86_ALIGNMENT
d5547f9f 53STATIC int
54xfs_compat_flock64_copyin(
55 xfs_flock64_t *bf,
56 compat_xfs_flock64_t __user *arg32)
526c420c 57{
d5547f9f 58 if (get_user(bf->l_type, &arg32->l_type) ||
59 get_user(bf->l_whence, &arg32->l_whence) ||
60 get_user(bf->l_start, &arg32->l_start) ||
61 get_user(bf->l_len, &arg32->l_len) ||
62 get_user(bf->l_sysid, &arg32->l_sysid) ||
63 get_user(bf->l_pid, &arg32->l_pid) ||
64 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
65 return -XFS_ERROR(EFAULT);
66 return 0;
526c420c
ES		 67}
68
d5547f9f 69STATIC int
70xfs_compat_ioc_fsgeometry_v1(
71 struct xfs_mount *mp,
72 compat_xfs_fsop_geom_v1_t __user *arg32)
547e00c3 73{
d5547f9f 74 xfs_fsop_geom_t fsgeo;
75 int error;
547e00c3 76
d5547f9f 77 error = xfs_fs_geometry(mp, &fsgeo, 3);
78 if (error)
79 return -error;
80 /* The 32-bit variant simply has some padding at the end */
81 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
82 return -XFS_ERROR(EFAULT);
83 return 0;
547e00c3
MM		 84}
85
471d5910 86STATIC int
87xfs_compat_growfs_data_copyin(
88 struct xfs_growfs_data *in,
89 compat_xfs_growfs_data_t __user *arg32)
90{
91 if (get_user(in->newblocks, &arg32->newblocks) ||
92 get_user(in->imaxpct, &arg32->imaxpct))
93 return -XFS_ERROR(EFAULT);
94 return 0;
95}
96
97STATIC int
98xfs_compat_growfs_rt_copyin(
99 struct xfs_growfs_rt *in,
100 compat_xfs_growfs_rt_t __user *arg32)
101{
102 if (get_user(in->newblocks, &arg32->newblocks) ||
103 get_user(in->extsize, &arg32->extsize))
104 return -XFS_ERROR(EFAULT);
105 return 0;
106}
107
d5547f9f 108STATIC int
109xfs_inumbers_fmt_compat(
110 void __user *ubuffer,
111 const xfs_inogrp_t *buffer,
112 long count,
113 long *written)
faa63e95 114{
d5547f9f 115 compat_xfs_inogrp_t __user *p32 = ubuffer;
116 long i;
faa63e95
MM		 117
118 for (i = 0; i < count; i++) {
119 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
120 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
121 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
d5547f9f 122 return -XFS_ERROR(EFAULT);
faa63e95
MM		 123 }
124 *written = count * sizeof(*p32);
125 return 0;
126}
127
1da177e4 128#else
faa63e95 129#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
e5d412f1 130#endif /* BROKEN_X86_ALIGNMENT */
faa63e95 131
e94fc4a4 132STATIC int
133xfs_ioctl32_bstime_copyin(
134 xfs_bstime_t *bstime,
135 compat_xfs_bstime_t __user *bstime32)
136{
137 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
138
139 if (get_user(sec32, &bstime32->tv_sec) ||
140 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
141 return -XFS_ERROR(EFAULT);
142 bstime->tv_sec = sec32;
143 return 0;
144}
145
146/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
147STATIC int
148xfs_ioctl32_bstat_copyin(
149 xfs_bstat_t *bstat,
150 compat_xfs_bstat_t __user *bstat32)
151{
152 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
153 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
154 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
155 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
156 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
157 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
158 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
159 get_user(bstat->bs_size, &bstat32->bs_size) ||
160 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
161 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
162 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
163 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
164 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
165 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
166 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
167 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
168 get_user(bstat->bs_projid, &bstat32->bs_projid) ||
169 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
170 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
171 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
172 return -XFS_ERROR(EFAULT);
173 return 0;
174}
175
faa63e95
MM		 176/* XFS_IOC_FSBULKSTAT and friends */
177
d5547f9f 178STATIC int
179xfs_bstime_store_compat(
180 compat_xfs_bstime_t __user *p32,
181 const xfs_bstime_t *p)
faa63e95 182{
d5547f9f 183 __s32 sec32;
faa63e95
MM		 184
185 sec32 = p->tv_sec;
186 if (put_user(sec32, &p32->tv_sec) ||
187 put_user(p->tv_nsec, &p32->tv_nsec))
d5547f9f 188 return -XFS_ERROR(EFAULT);
faa63e95
MM		 189 return 0;
190}
191
65fbaf24 192/* Return 0 on success or positive error (to xfs_bulkstat()) */
d5547f9f 193STATIC int
194xfs_bulkstat_one_fmt_compat(
faa63e95 195 void __user *ubuffer,
65fbaf24 196 int ubsize,
197 int *ubused,
faa63e95
MM		 198 const xfs_bstat_t *buffer)
199{
d5547f9f 200 compat_xfs_bstat_t __user *p32 = ubuffer;
faa63e95 201
65fbaf24 202 if (ubsize < sizeof(*p32))
203 return XFS_ERROR(ENOMEM);
204
205 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
206 put_user(buffer->bs_mode, &p32->bs_mode) ||
207 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
208 put_user(buffer->bs_uid, &p32->bs_uid) ||
209 put_user(buffer->bs_gid, &p32->bs_gid) ||
210 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
211 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
212 put_user(buffer->bs_size, &p32->bs_size) ||
faa63e95
MM		 213 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
214 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
215 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
65fbaf24 216 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
217 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
218 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
219 put_user(buffer->bs_extents, &p32->bs_extents) ||
220 put_user(buffer->bs_gen, &p32->bs_gen) ||
221 put_user(buffer->bs_projid, &p32->bs_projid) ||
222 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
223 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
faa63e95 224 put_user(buffer->bs_aextents, &p32->bs_aextents))
65fbaf24 225 return XFS_ERROR(EFAULT);
226 if (ubused)
227 *ubused = sizeof(*p32);
228 return 0;
faa63e95
MM		 229}
230
2ee4fa5c 231STATIC int
232xfs_bulkstat_one_compat(
233 xfs_mount_t *mp, /* mount point for filesystem */
234 xfs_ino_t ino, /* inode number to get data for */
235 void __user *buffer, /* buffer to place output in */
236 int ubsize, /* size of buffer */
237 void *private_data, /* my private data */
238 xfs_daddr_t bno, /* starting bno of inode cluster */
239 int *ubused, /* bytes used by me */
240 void *dibuff, /* on-disk inode buffer */
241 int *stat) /* BULKSTAT_RV_... */
242{
243 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
244 xfs_bulkstat_one_fmt_compat, bno,
245 ubused, dibuff, stat);
246}
247
faa63e95
MM		 248/* copied from xfs_ioctl.c */
249STATIC int
2ee4fa5c 250xfs_compat_ioc_bulkstat(
251 xfs_mount_t *mp,
252 unsigned int cmd,
253 compat_xfs_fsop_bulkreq_t __user *p32)
1da177e4 254{
1da177e4 255 u32 addr;
faa63e95
MM		 256 xfs_fsop_bulkreq_t bulkreq;
257 int count; /* # of records returned */
258 xfs_ino_t inlast; /* last inode number */
259 int done;
260 int error;
261
262 /* done = 1 if there are more stats to get and if bulkstat */
263 /* should be called again (unused here, but used in dmapi) */
1da177e4 264
faa63e95 265 if (!capable(CAP_SYS_ADMIN))
d5547f9f 266 return -XFS_ERROR(EPERM);
faa63e95
MM		 267
268 if (XFS_FORCED_SHUTDOWN(mp))
269 return -XFS_ERROR(EIO);
270
271 if (get_user(addr, &p32->lastip))
d5547f9f 272 return -XFS_ERROR(EFAULT);
faa63e95
MM		 273 bulkreq.lastip = compat_ptr(addr);
274 if (get_user(bulkreq.icount, &p32->icount) ||
275 get_user(addr, &p32->ubuffer))
d5547f9f 276 return -XFS_ERROR(EFAULT);
faa63e95
MM		 277 bulkreq.ubuffer = compat_ptr(addr);
278 if (get_user(addr, &p32->ocount))
d5547f9f 279 return -XFS_ERROR(EFAULT);
faa63e95 280 bulkreq.ocount = compat_ptr(addr);
1da177e4 281
faa63e95
MM		 282 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
283 return -XFS_ERROR(EFAULT);
284
285 if ((count = bulkreq.icount) <= 0)
286 return -XFS_ERROR(EINVAL);
287
cd57e594
LM		 288 if (bulkreq.ubuffer == NULL)
289 return -XFS_ERROR(EINVAL);
290
af819d27 291 if (cmd == XFS_IOC_FSINUMBERS_32) {
faa63e95
MM		 292 error = xfs_inumbers(mp, &inlast, &count,
293 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
af819d27 294 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
295 int res;
296
297 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
298 sizeof(compat_xfs_bstat_t),
299 NULL, 0, NULL, NULL, &res);
300 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
faa63e95 301 error = xfs_bulkstat(mp, &inlast, &count,
2ee4fa5c 302 xfs_bulkstat_one_compat, NULL,
faa63e95
MM		 303 sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
304 BULKSTAT_FG_QUICK, &done);
af819d27 305 } else
306 error = XFS_ERROR(EINVAL);
faa63e95
MM		 307 if (error)
308 return -error;
309
310 if (bulkreq.ocount != NULL) {
311 if (copy_to_user(bulkreq.lastip, &inlast,
312 sizeof(xfs_ino_t)))
313 return -XFS_ERROR(EFAULT);
314
315 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
316 return -XFS_ERROR(EFAULT);
317 }
318
319 return 0;
1da177e4 320}
faa63e95 321
d5547f9f 322STATIC int
323xfs_compat_handlereq_copyin(
324 xfs_fsop_handlereq_t *hreq,
325 compat_xfs_fsop_handlereq_t __user *arg32)
1fa503df 326{
d5547f9f 327 compat_xfs_fsop_handlereq_t hreq32;
328
329 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
330 return -XFS_ERROR(EFAULT);
331
332 hreq->fd = hreq32.fd;
333 hreq->path = compat_ptr(hreq32.path);
334 hreq->oflags = hreq32.oflags;
335 hreq->ihandle = compat_ptr(hreq32.ihandle);
336 hreq->ihandlen = hreq32.ihandlen;
337 hreq->ohandle = compat_ptr(hreq32.ohandle);
338 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
339
340 return 0;
1fa503df
MM		 341}
342
ebeecd2b 343/*
344 * Convert userspace handle data into inode.
345 *
346 * We use the fact that all the fsop_handlereq ioctl calls have a data
347 * structure argument whose first component is always a xfs_fsop_handlereq_t,
348 * so we can pass that sub structure into this handy, shared routine.
349 *
350 * If no error, caller must always iput the returned inode.
351 */
352STATIC int
353xfs_vget_fsop_handlereq_compat(
354 xfs_mount_t *mp,
355 struct inode *parinode, /* parent inode pointer */
356 compat_xfs_fsop_handlereq_t *hreq,
357 struct inode **inode)
358{
359 void __user *hanp;
360 size_t hlen;
361 xfs_fid_t *xfid;
362 xfs_handle_t *handlep;
363 xfs_handle_t handle;
364 xfs_inode_t *ip;
365 xfs_ino_t ino;
366 __u32 igen;
367 int error;
368
369 /*
370 * Only allow handle opens under a directory.
371 */
372 if (!S_ISDIR(parinode->i_mode))
373 return XFS_ERROR(ENOTDIR);
374
375 hanp = compat_ptr(hreq->ihandle);
376 hlen = hreq->ihandlen;
377 handlep = &handle;
378
379 if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep))
380 return XFS_ERROR(EINVAL);
381 if (copy_from_user(handlep, hanp, hlen))
382 return XFS_ERROR(EFAULT);
383 if (hlen < sizeof(*handlep))
384 memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
385 if (hlen > sizeof(handlep->ha_fsid)) {
386 if (handlep->ha_fid.fid_len !=
387 (hlen - sizeof(handlep->ha_fsid) -
388 sizeof(handlep->ha_fid.fid_len)) ||
389 handlep->ha_fid.fid_pad)
390 return XFS_ERROR(EINVAL);
391 }
392
393 /*
394 * Crack the handle, obtain the inode # & generation #
395 */
396 xfid = (struct xfs_fid *)&handlep->ha_fid;
397 if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) {
398 ino = xfid->fid_ino;
399 igen = xfid->fid_gen;
400 } else {
401 return XFS_ERROR(EINVAL);
402 }
403
404 /*
405 * Get the XFS inode, building a Linux inode to go with it.
406 */
407 error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
408 if (error)
409 return error;
410 if (ip == NULL)
411 return XFS_ERROR(EIO);
412 if (ip->i_d.di_gen != igen) {
413 xfs_iput_new(ip, XFS_ILOCK_SHARED);
414 return XFS_ERROR(ENOENT);
415 }
416
417 xfs_iunlock(ip, XFS_ILOCK_SHARED);
418
419 *inode = VFS_I(ip);
420 return 0;
421}
422
423STATIC int
424xfs_compat_attrlist_by_handle(
425 xfs_mount_t *mp,
426 void __user *arg,
427 struct inode *parinode)
428{
429 int error;
430 attrlist_cursor_kern_t *cursor;
431 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
432 struct inode *inode;
433 char *kbuf;
434
435 if (!capable(CAP_SYS_ADMIN))
436 return -XFS_ERROR(EPERM);
437 if (copy_from_user(&al_hreq, arg,
438 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
439 return -XFS_ERROR(EFAULT);
440 if (al_hreq.buflen > XATTR_LIST_MAX)
441 return -XFS_ERROR(EINVAL);
442
443 /*
444 * Reject flags, only allow namespaces.
445 */
446 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
447 return -XFS_ERROR(EINVAL);
448
449 error = xfs_vget_fsop_handlereq_compat(mp, parinode, &al_hreq.hreq,
450 &inode);
451 if (error)
452 goto out;
453
454 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
455 if (!kbuf)
456 goto out_vn_rele;
457
458 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
459 error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen,
460 al_hreq.flags, cursor);
461 if (error)
462 goto out_kfree;
463
464 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
465 error = -EFAULT;
466
467 out_kfree:
468 kfree(kbuf);
469 out_vn_rele:
470 iput(inode);
471 out:
472 return -error;
473}
474
28750975 475STATIC int
476xfs_compat_attrmulti_by_handle(
477 xfs_mount_t *mp,
478 void __user *arg,
479 struct inode *parinode)
480{
481 int error;
482 compat_xfs_attr_multiop_t *ops;
483 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
484 struct inode *inode;
485 unsigned int i, size;
486 char *attr_name;
487
488 if (!capable(CAP_SYS_ADMIN))
489 return -XFS_ERROR(EPERM);
490 if (copy_from_user(&am_hreq, arg,
491 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
492 return -XFS_ERROR(EFAULT);
493
494 error = xfs_vget_fsop_handlereq_compat(mp, parinode, &am_hreq.hreq,
495 &inode);
496 if (error)
497 goto out;
498
499 error = E2BIG;
500 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
501 if (!size || size > 16 * PAGE_SIZE)
502 goto out_vn_rele;
503
504 error = ENOMEM;
505 ops = kmalloc(size, GFP_KERNEL);
506 if (!ops)
507 goto out_vn_rele;
508
509 error = EFAULT;
510 if (copy_from_user(ops, compat_ptr(am_hreq.ops), size))
511 goto out_kfree_ops;
512
513 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
514 if (!attr_name)
515 goto out_kfree_ops;
516
517
518 error = 0;
519 for (i = 0; i < am_hreq.opcount; i++) {
520 ops[i].am_error = strncpy_from_user(attr_name,
521 compat_ptr(ops[i].am_attrname),
522 MAXNAMELEN);
523 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
524 error = -ERANGE;
525 if (ops[i].am_error < 0)
526 break;
527
528 switch (ops[i].am_opcode) {
529 case ATTR_OP_GET:
530 ops[i].am_error = xfs_attrmulti_attr_get(inode,
531 attr_name,
532 compat_ptr(ops[i].am_attrvalue),
533 &ops[i].am_length, ops[i].am_flags);
534 break;
535 case ATTR_OP_SET:
536 ops[i].am_error = xfs_attrmulti_attr_set(inode,
537 attr_name,
538 compat_ptr(ops[i].am_attrvalue),
539 ops[i].am_length, ops[i].am_flags);
540 break;
541 case ATTR_OP_REMOVE:
542 ops[i].am_error = xfs_attrmulti_attr_remove(inode,
543 attr_name, ops[i].am_flags);
544 break;
545 default:
546 ops[i].am_error = EINVAL;
547 }
548 }
549
550 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
551 error = XFS_ERROR(EFAULT);
552
553 kfree(attr_name);
554 out_kfree_ops:
555 kfree(ops);
556 out_vn_rele:
557 iput(inode);
558 out:
559 return -error;
560}
561
710d62aa 562STATIC int
563xfs_compat_fssetdm_by_handle(
564 xfs_mount_t *mp,
565 void __user *arg,
566 struct inode *parinode)
567{
568 int error;
569 struct fsdmidata fsd;
570 compat_xfs_fsop_setdm_handlereq_t dmhreq;
571 struct inode *inode;
572
573 if (!capable(CAP_MKNOD))
574 return -XFS_ERROR(EPERM);
575 if (copy_from_user(&dmhreq, arg,
576 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
577 return -XFS_ERROR(EFAULT);
578
579 error = xfs_vget_fsop_handlereq_compat(mp, parinode, &dmhreq.hreq,
580 &inode);
581 if (error)
582 return -error;
583
584 if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
585 error = -XFS_ERROR(EPERM);
586 goto out;
587 }
588
589 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
590 error = -XFS_ERROR(EFAULT);
591 goto out;
592 }
593
594 error = -xfs_set_dmattrs(XFS_I(inode), fsd.fsd_dmevmask,
595 fsd.fsd_dmstate);
596
597out:
598 iput(inode);
599 return error;
600}
601
4d4be482
CH		 602long
603xfs_file_compat_ioctl(
604 struct file *filp,
605 unsigned cmd,
606 unsigned long p)
1da177e4 607{
4d4be482
CH		 608 struct inode *inode = filp->f_path.dentry->d_inode;
609 struct xfs_inode *ip = XFS_I(inode);
610 struct xfs_mount *mp = ip->i_mount;
611 void __user *arg = (void __user *)p;
612 int ioflags = 0;
613 int error;
614
615 if (filp->f_mode & FMODE_NOCMTIME)
616 ioflags |= IO_INVIS;
617
618 xfs_itrace_entry(ip);
1da177e4
LT		 619
620 switch (cmd) {
e5d412f1 621 /* No size or alignment issues on any arch */
1da177e4 622 case XFS_IOC_DIOINFO:
1da177e4 623 case XFS_IOC_FSGEOMETRY:
1da177e4
LT		 624 case XFS_IOC_FSGETXATTR:
625 case XFS_IOC_FSSETXATTR:
626 case XFS_IOC_FSGETXATTRA:
627 case XFS_IOC_FSSETDM:
628 case XFS_IOC_GETBMAP:
629 case XFS_IOC_GETBMAPA:
630 case XFS_IOC_GETBMAPX:
1da177e4
LT		 631 case XFS_IOC_FSCOUNTS:
632 case XFS_IOC_SET_RESBLKS:
633 case XFS_IOC_GET_RESBLKS:
1da177e4 634 case XFS_IOC_FSGROWFSLOG:
1da177e4
LT		 635 case XFS_IOC_GOINGDOWN:
636 case XFS_IOC_ERROR_INJECTION:
637 case XFS_IOC_ERROR_CLEARALL:
4d4be482 638 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 639#ifndef BROKEN_X86_ALIGNMENT
640 /* These are handled fine if no alignment issues */
641 case XFS_IOC_ALLOCSP:
642 case XFS_IOC_FREESP:
643 case XFS_IOC_RESVSP:
644 case XFS_IOC_UNRESVSP:
645 case XFS_IOC_ALLOCSP64:
646 case XFS_IOC_FREESP64:
647 case XFS_IOC_RESVSP64:
648 case XFS_IOC_UNRESVSP64:
649 case XFS_IOC_FSGEOMETRY_V1:
650 case XFS_IOC_FSGROWFSDATA:
651 case XFS_IOC_FSGROWFSRT:
4d4be482 652 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 653#else
526c420c
ES		 654 case XFS_IOC_ALLOCSP_32:
655 case XFS_IOC_FREESP_32:
656 case XFS_IOC_ALLOCSP64_32:
657 case XFS_IOC_FREESP64_32:
658 case XFS_IOC_RESVSP_32:
659 case XFS_IOC_UNRESVSP_32:
660 case XFS_IOC_RESVSP64_32:
d5547f9f 661 case XFS_IOC_UNRESVSP64_32: {
662 struct xfs_flock64 bf;
663
664 if (xfs_compat_flock64_copyin(&bf, arg))
665 return -XFS_ERROR(EFAULT);
526c420c 666 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
d5547f9f 667 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
668 }
547e00c3 669 case XFS_IOC_FSGEOMETRY_V1_32:
d5547f9f 670 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
471d5910 671 case XFS_IOC_FSGROWFSDATA_32: {
672 struct xfs_growfs_data in;
673
674 if (xfs_compat_growfs_data_copyin(&in, arg))
675 return -XFS_ERROR(EFAULT);
676 error = xfs_growfs_data(mp, &in);
677 return -error;
678 }
679 case XFS_IOC_FSGROWFSRT_32: {
680 struct xfs_growfs_rt in;
681
682 if (xfs_compat_growfs_rt_copyin(&in, arg))
683 return -XFS_ERROR(EFAULT);
684 error = xfs_growfs_rt(mp, &in);
685 return -error;
686 }
1da177e4 687#endif
e5d412f1 688 /* long changes size, but xfs only copiese out 32 bits */
689 case XFS_IOC_GETXFLAGS_32:
690 case XFS_IOC_SETXFLAGS_32:
691 case XFS_IOC_GETVERSION_32:
692 cmd = _NATIVE_IOC(cmd, long);
4d4be482 693 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 694 case XFS_IOC_SWAPEXT: {
695 struct xfs_swapext sxp;
696 struct compat_xfs_swapext __user *sxu = arg;
697
698 /* Bulk copy in up to the sx_stat field, then copy bstat */
699 if (copy_from_user(&sxp, sxu,
700 offsetof(struct xfs_swapext, sx_stat)) ||
701 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
702 return -XFS_ERROR(EFAULT);
703 error = xfs_swapext(&sxp);
704 return -error;
705 }
faa63e95
MM		 706 case XFS_IOC_FSBULKSTAT_32:
707 case XFS_IOC_FSBULKSTAT_SINGLE_32:
708 case XFS_IOC_FSINUMBERS_32:
2ee4fa5c 709 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
1fa503df
MM		 710 case XFS_IOC_FD_TO_HANDLE_32:
711 case XFS_IOC_PATH_TO_HANDLE_32:
d5547f9f 712 case XFS_IOC_PATH_TO_FSHANDLE_32: {
713 struct xfs_fsop_handlereq hreq;
714
715 if (xfs_compat_handlereq_copyin(&hreq, arg))
716 return -XFS_ERROR(EFAULT);
1fa503df 717 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
d5547f9f 718 return xfs_find_handle(cmd, &hreq);
719 }
720 case XFS_IOC_OPEN_BY_HANDLE_32: {
721 struct xfs_fsop_handlereq hreq;
722
723 if (xfs_compat_handlereq_copyin(&hreq, arg))
724 return -XFS_ERROR(EFAULT);
725 return xfs_open_by_handle(mp, &hreq, filp, inode);
726 }
727 case XFS_IOC_READLINK_BY_HANDLE_32: {
728 struct xfs_fsop_handlereq hreq;
729
730 if (xfs_compat_handlereq_copyin(&hreq, arg))
731 return -XFS_ERROR(EFAULT);
732 return xfs_readlink_by_handle(mp, &hreq, inode);
733 }
ebeecd2b 734 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
735 return xfs_compat_attrlist_by_handle(mp, arg, inode);
28750975 736 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
737 return xfs_compat_attrmulti_by_handle(mp, arg, inode);
710d62aa 738 case XFS_IOC_FSSETDM_BY_HANDLE_32:
739 return xfs_compat_fssetdm_by_handle(mp, arg, inode);
1da177e4 740 default:
d5547f9f 741 return -XFS_ERROR(ENOIOCTLCMD);
1da177e4 742 }
1da177e4 743}
Linux kernel - Deliverables
This page took 0.634781 seconds and 5 git commands to generate.