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new helper: file_inode(file)
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / fs / xfs / 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>
62e194ec 20#include <linux/mount.h>
5a0e3ad6 21#include <linux/slab.h>
1da177e4 22#include <asm/uaccess.h>
1da177e4 23#include "xfs.h"
1da177e4 24#include "xfs_fs.h"
faa63e95 25#include "xfs_log.h"
faa63e95
MM		 26#include "xfs_trans.h"
27#include "xfs_sb.h"
28#include "xfs_ag.h"
faa63e95
MM		 29#include "xfs_mount.h"
30#include "xfs_bmap_btree.h"
1da177e4 31#include "xfs_vnode.h"
faa63e95
MM		 32#include "xfs_dinode.h"
33#include "xfs_inode.h"
34#include "xfs_itable.h"
35#include "xfs_error.h"
1da177e4 36#include "xfs_dfrag.h"
739bfb2a 37#include "xfs_vnodeops.h"
d5547f9f 38#include "xfs_fsops.h"
471d5910 39#include "xfs_alloc.h"
40#include "xfs_rtalloc.h"
ebeecd2b 41#include "xfs_attr.h"
d5547f9f 42#include "xfs_ioctl.h"
a8272ce0 43#include "xfs_ioctl32.h"
0b1b213f 44#include "xfs_trace.h"
1da177e4 45
526c420c
ES		 46#define _NATIVE_IOC(cmd, type) \
47 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
48
ffae263a 49#ifdef BROKEN_X86_ALIGNMENT
d5547f9f 50STATIC int
51xfs_compat_flock64_copyin(
52 xfs_flock64_t *bf,
53 compat_xfs_flock64_t __user *arg32)
526c420c 54{
d5547f9f 55 if (get_user(bf->l_type, &arg32->l_type) ||
56 get_user(bf->l_whence, &arg32->l_whence) ||
57 get_user(bf->l_start, &arg32->l_start) ||
58 get_user(bf->l_len, &arg32->l_len) ||
59 get_user(bf->l_sysid, &arg32->l_sysid) ||
60 get_user(bf->l_pid, &arg32->l_pid) ||
61 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
62 return -XFS_ERROR(EFAULT);
63 return 0;
526c420c
ES		 64}
65
d5547f9f 66STATIC int
67xfs_compat_ioc_fsgeometry_v1(
68 struct xfs_mount *mp,
69 compat_xfs_fsop_geom_v1_t __user *arg32)
547e00c3 70{
d5547f9f 71 xfs_fsop_geom_t fsgeo;
72 int error;
547e00c3 73
d5547f9f 74 error = xfs_fs_geometry(mp, &fsgeo, 3);
75 if (error)
76 return -error;
77 /* The 32-bit variant simply has some padding at the end */
78 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
79 return -XFS_ERROR(EFAULT);
80 return 0;
547e00c3
MM		 81}
82
471d5910 83STATIC int
84xfs_compat_growfs_data_copyin(
85 struct xfs_growfs_data *in,
86 compat_xfs_growfs_data_t __user *arg32)
87{
88 if (get_user(in->newblocks, &arg32->newblocks) ||
89 get_user(in->imaxpct, &arg32->imaxpct))
90 return -XFS_ERROR(EFAULT);
91 return 0;
92}
93
94STATIC int
95xfs_compat_growfs_rt_copyin(
96 struct xfs_growfs_rt *in,
97 compat_xfs_growfs_rt_t __user *arg32)
98{
99 if (get_user(in->newblocks, &arg32->newblocks) ||
100 get_user(in->extsize, &arg32->extsize))
101 return -XFS_ERROR(EFAULT);
102 return 0;
103}
104
d5547f9f 105STATIC int
106xfs_inumbers_fmt_compat(
107 void __user *ubuffer,
108 const xfs_inogrp_t *buffer,
109 long count,
110 long *written)
faa63e95 111{
d5547f9f 112 compat_xfs_inogrp_t __user *p32 = ubuffer;
113 long i;
faa63e95
MM		 114
115 for (i = 0; i < count; i++) {
116 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
117 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
118 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
d5547f9f 119 return -XFS_ERROR(EFAULT);
faa63e95
MM		 120 }
121 *written = count * sizeof(*p32);
122 return 0;
123}
124
1da177e4 125#else
faa63e95 126#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
e5d412f1 127#endif /* BROKEN_X86_ALIGNMENT */
faa63e95 128
e94fc4a4 129STATIC int
130xfs_ioctl32_bstime_copyin(
131 xfs_bstime_t *bstime,
132 compat_xfs_bstime_t __user *bstime32)
133{
134 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
135
136 if (get_user(sec32, &bstime32->tv_sec) ||
137 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
138 return -XFS_ERROR(EFAULT);
139 bstime->tv_sec = sec32;
140 return 0;
141}
142
143/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
144STATIC int
145xfs_ioctl32_bstat_copyin(
146 xfs_bstat_t *bstat,
147 compat_xfs_bstat_t __user *bstat32)
148{
149 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
150 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
151 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
152 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
153 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
154 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
155 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
156 get_user(bstat->bs_size, &bstat32->bs_size) ||
157 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
158 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
159 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
160 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
161 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
162 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
163 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
164 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
6743099c
AM		 165 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
166 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
e94fc4a4 167 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
168 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
169 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
170 return -XFS_ERROR(EFAULT);
171 return 0;
172}
173
faa63e95
MM		 174/* XFS_IOC_FSBULKSTAT and friends */
175
d5547f9f 176STATIC int
177xfs_bstime_store_compat(
178 compat_xfs_bstime_t __user *p32,
179 const xfs_bstime_t *p)
faa63e95 180{
d5547f9f 181 __s32 sec32;
faa63e95
MM		 182
183 sec32 = p->tv_sec;
184 if (put_user(sec32, &p32->tv_sec) ||
185 put_user(p->tv_nsec, &p32->tv_nsec))
d5547f9f 186 return -XFS_ERROR(EFAULT);
faa63e95
MM		 187 return 0;
188}
189
65fbaf24 190/* Return 0 on success or positive error (to xfs_bulkstat()) */
d5547f9f 191STATIC int
192xfs_bulkstat_one_fmt_compat(
faa63e95 193 void __user *ubuffer,
65fbaf24 194 int ubsize,
195 int *ubused,
faa63e95
MM		 196 const xfs_bstat_t *buffer)
197{
d5547f9f 198 compat_xfs_bstat_t __user *p32 = ubuffer;
faa63e95 199
65fbaf24 200 if (ubsize < sizeof(*p32))
201 return XFS_ERROR(ENOMEM);
202
203 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
204 put_user(buffer->bs_mode, &p32->bs_mode) ||
205 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
206 put_user(buffer->bs_uid, &p32->bs_uid) ||
207 put_user(buffer->bs_gid, &p32->bs_gid) ||
208 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
209 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
210 put_user(buffer->bs_size, &p32->bs_size) ||
faa63e95
MM		 211 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
212 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
213 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
65fbaf24 214 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
215 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
216 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
217 put_user(buffer->bs_extents, &p32->bs_extents) ||
218 put_user(buffer->bs_gen, &p32->bs_gen) ||
219 put_user(buffer->bs_projid, &p32->bs_projid) ||
6743099c 220 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
65fbaf24 221 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
222 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
faa63e95 223 put_user(buffer->bs_aextents, &p32->bs_aextents))
65fbaf24 224 return XFS_ERROR(EFAULT);
225 if (ubused)
226 *ubused = sizeof(*p32);
227 return 0;
faa63e95
MM		 228}
229
2ee4fa5c 230STATIC int
231xfs_bulkstat_one_compat(
232 xfs_mount_t *mp, /* mount point for filesystem */
233 xfs_ino_t ino, /* inode number to get data for */
234 void __user *buffer, /* buffer to place output in */
235 int ubsize, /* size of buffer */
2ee4fa5c 236 int *ubused, /* bytes used by me */
2ee4fa5c 237 int *stat) /* BULKSTAT_RV_... */
238{
239 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
7b6259e7 240 xfs_bulkstat_one_fmt_compat,
7dce11db 241 ubused, stat);
2ee4fa5c 242}
243
faa63e95
MM		 244/* copied from xfs_ioctl.c */
245STATIC int
2ee4fa5c 246xfs_compat_ioc_bulkstat(
247 xfs_mount_t *mp,
248 unsigned int cmd,
249 compat_xfs_fsop_bulkreq_t __user *p32)
1da177e4 250{
1da177e4 251 u32 addr;
faa63e95
MM		 252 xfs_fsop_bulkreq_t bulkreq;
253 int count; /* # of records returned */
254 xfs_ino_t inlast; /* last inode number */
255 int done;
256 int error;
257
258 /* done = 1 if there are more stats to get and if bulkstat */
259 /* should be called again (unused here, but used in dmapi) */
1da177e4 260
faa63e95 261 if (!capable(CAP_SYS_ADMIN))
d5547f9f 262 return -XFS_ERROR(EPERM);
faa63e95
MM		 263
264 if (XFS_FORCED_SHUTDOWN(mp))
265 return -XFS_ERROR(EIO);
266
267 if (get_user(addr, &p32->lastip))
d5547f9f 268 return -XFS_ERROR(EFAULT);
faa63e95
MM		 269 bulkreq.lastip = compat_ptr(addr);
270 if (get_user(bulkreq.icount, &p32->icount) ||
271 get_user(addr, &p32->ubuffer))
d5547f9f 272 return -XFS_ERROR(EFAULT);
faa63e95
MM		 273 bulkreq.ubuffer = compat_ptr(addr);
274 if (get_user(addr, &p32->ocount))
d5547f9f 275 return -XFS_ERROR(EFAULT);
faa63e95 276 bulkreq.ocount = compat_ptr(addr);
1da177e4 277
faa63e95
MM		 278 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
279 return -XFS_ERROR(EFAULT);
280
281 if ((count = bulkreq.icount) <= 0)
282 return -XFS_ERROR(EINVAL);
283
cd57e594
LM		 284 if (bulkreq.ubuffer == NULL)
285 return -XFS_ERROR(EINVAL);
286
af819d27 287 if (cmd == XFS_IOC_FSINUMBERS_32) {
faa63e95
MM		 288 error = xfs_inumbers(mp, &inlast, &count,
289 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
af819d27 290 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
291 int res;
292
293 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
8d2a5e6e 294 sizeof(compat_xfs_bstat_t), NULL, &res);
af819d27 295 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
faa63e95 296 error = xfs_bulkstat(mp, &inlast, &count,
7dce11db
CH		 297 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
298 bulkreq.ubuffer, &done);
af819d27 299 } else
300 error = XFS_ERROR(EINVAL);
faa63e95
MM		 301 if (error)
302 return -error;
303
304 if (bulkreq.ocount != NULL) {
305 if (copy_to_user(bulkreq.lastip, &inlast,
306 sizeof(xfs_ino_t)))
307 return -XFS_ERROR(EFAULT);
308
309 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
310 return -XFS_ERROR(EFAULT);
311 }
312
313 return 0;
1da177e4 314}
faa63e95 315
d5547f9f 316STATIC int
317xfs_compat_handlereq_copyin(
318 xfs_fsop_handlereq_t *hreq,
319 compat_xfs_fsop_handlereq_t __user *arg32)
1fa503df 320{
d5547f9f 321 compat_xfs_fsop_handlereq_t hreq32;
322
323 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
324 return -XFS_ERROR(EFAULT);
325
326 hreq->fd = hreq32.fd;
327 hreq->path = compat_ptr(hreq32.path);
328 hreq->oflags = hreq32.oflags;
329 hreq->ihandle = compat_ptr(hreq32.ihandle);
330 hreq->ihandlen = hreq32.ihandlen;
331 hreq->ohandle = compat_ptr(hreq32.ohandle);
332 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
333
334 return 0;
1fa503df
MM		 335}
336
ab596ad8
CH		 337STATIC struct dentry *
338xfs_compat_handlereq_to_dentry(
339 struct file *parfilp,
340 compat_xfs_fsop_handlereq_t *hreq)
ebeecd2b 341{
ab596ad8
CH		 342 return xfs_handle_to_dentry(parfilp,
343 compat_ptr(hreq->ihandle), hreq->ihandlen);
ebeecd2b 344}
345
346STATIC int
347xfs_compat_attrlist_by_handle(
ab596ad8
CH		 348 struct file *parfilp,
349 void __user *arg)
ebeecd2b 350{
351 int error;
352 attrlist_cursor_kern_t *cursor;
353 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
ab596ad8 354 struct dentry *dentry;
ebeecd2b 355 char *kbuf;
356
357 if (!capable(CAP_SYS_ADMIN))
358 return -XFS_ERROR(EPERM);
359 if (copy_from_user(&al_hreq, arg,
360 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
361 return -XFS_ERROR(EFAULT);
362 if (al_hreq.buflen > XATTR_LIST_MAX)
363 return -XFS_ERROR(EINVAL);
364
365 /*
366 * Reject flags, only allow namespaces.
367 */
368 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
369 return -XFS_ERROR(EINVAL);
370
ab596ad8
CH		 371 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
372 if (IS_ERR(dentry))
373 return PTR_ERR(dentry);
ebeecd2b 374
ab596ad8 375 error = -ENOMEM;
ebeecd2b 376 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
377 if (!kbuf)
ab596ad8 378 goto out_dput;
ebeecd2b 379
380 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
ab596ad8 381 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
ebeecd2b 382 al_hreq.flags, cursor);
383 if (error)
384 goto out_kfree;
385
386 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
387 error = -EFAULT;
388
389 out_kfree:
390 kfree(kbuf);
ab596ad8
CH		 391 out_dput:
392 dput(dentry);
393 return error;
ebeecd2b 394}
395
28750975 396STATIC int
397xfs_compat_attrmulti_by_handle(
ab596ad8
CH		 398 struct file *parfilp,
399 void __user *arg)
28750975 400{
401 int error;
402 compat_xfs_attr_multiop_t *ops;
403 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
ab596ad8 404 struct dentry *dentry;
28750975 405 unsigned int i, size;
a9273ca5 406 unsigned char *attr_name;
28750975 407
408 if (!capable(CAP_SYS_ADMIN))
409 return -XFS_ERROR(EPERM);
410 if (copy_from_user(&am_hreq, arg,
411 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
412 return -XFS_ERROR(EFAULT);
413
fda168c2
ZW		 414 /* overflow check */
415 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
416 return -E2BIG;
417
ab596ad8
CH		 418 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
419 if (IS_ERR(dentry))
420 return PTR_ERR(dentry);
28750975 421
422 error = E2BIG;
423 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
424 if (!size || size > 16 * PAGE_SIZE)
ab596ad8 425 goto out_dput;
28750975 426
0e639bde
LZ		 427 ops = memdup_user(compat_ptr(am_hreq.ops), size);
428 if (IS_ERR(ops)) {
429 error = PTR_ERR(ops);
ab596ad8 430 goto out_dput;
0e639bde 431 }
28750975 432
433 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
434 if (!attr_name)
435 goto out_kfree_ops;
436
28750975 437 error = 0;
438 for (i = 0; i < am_hreq.opcount; i++) {
a9273ca5 439 ops[i].am_error = strncpy_from_user((char *)attr_name,
28750975 440 compat_ptr(ops[i].am_attrname),
441 MAXNAMELEN);
442 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
443 error = -ERANGE;
444 if (ops[i].am_error < 0)
445 break;
446
447 switch (ops[i].am_opcode) {
448 case ATTR_OP_GET:
ab596ad8
CH		 449 ops[i].am_error = xfs_attrmulti_attr_get(
450 dentry->d_inode, attr_name,
28750975 451 compat_ptr(ops[i].am_attrvalue),
452 &ops[i].am_length, ops[i].am_flags);
453 break;
454 case ATTR_OP_SET:
a561be71 455 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 456 if (ops[i].am_error)
457 break;
ab596ad8
CH		 458 ops[i].am_error = xfs_attrmulti_attr_set(
459 dentry->d_inode, attr_name,
28750975 460 compat_ptr(ops[i].am_attrvalue),
461 ops[i].am_length, ops[i].am_flags);
2a79f17e 462 mnt_drop_write_file(parfilp);
28750975 463 break;
464 case ATTR_OP_REMOVE:
a561be71 465 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 466 if (ops[i].am_error)
467 break;
ab596ad8
CH		 468 ops[i].am_error = xfs_attrmulti_attr_remove(
469 dentry->d_inode, attr_name,
470 ops[i].am_flags);
2a79f17e 471 mnt_drop_write_file(parfilp);
28750975 472 break;
473 default:
474 ops[i].am_error = EINVAL;
475 }
476 }
477
478 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
479 error = XFS_ERROR(EFAULT);
480
481 kfree(attr_name);
482 out_kfree_ops:
483 kfree(ops);
ab596ad8
CH		 484 out_dput:
485 dput(dentry);
28750975 486 return -error;
487}
488
710d62aa 489STATIC int
490xfs_compat_fssetdm_by_handle(
ab596ad8
CH		 491 struct file *parfilp,
492 void __user *arg)
710d62aa 493{
494 int error;
495 struct fsdmidata fsd;
496 compat_xfs_fsop_setdm_handlereq_t dmhreq;
ab596ad8 497 struct dentry *dentry;
710d62aa 498
499 if (!capable(CAP_MKNOD))
500 return -XFS_ERROR(EPERM);
501 if (copy_from_user(&dmhreq, arg,
502 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
503 return -XFS_ERROR(EFAULT);
504
ab596ad8
CH		 505 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
506 if (IS_ERR(dentry))
507 return PTR_ERR(dentry);
710d62aa 508
ab596ad8 509 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
710d62aa 510 error = -XFS_ERROR(EPERM);
511 goto out;
512 }
513
514 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
515 error = -XFS_ERROR(EFAULT);
516 goto out;
517 }
518
ab596ad8 519 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
710d62aa 520 fsd.fsd_dmstate);
521
522out:
ab596ad8 523 dput(dentry);
710d62aa 524 return error;
525}
526
4d4be482
CH		 527long
528xfs_file_compat_ioctl(
529 struct file *filp,
530 unsigned cmd,
531 unsigned long p)
1da177e4 532{
496ad9aa 533 struct inode *inode = file_inode(filp);
4d4be482
CH		 534 struct xfs_inode *ip = XFS_I(inode);
535 struct xfs_mount *mp = ip->i_mount;
536 void __user *arg = (void __user *)p;
537 int ioflags = 0;
538 int error;
539
540 if (filp->f_mode & FMODE_NOCMTIME)
541 ioflags |= IO_INVIS;
542
cca28fb8 543 trace_xfs_file_compat_ioctl(ip);
1da177e4
LT		 544
545 switch (cmd) {
e5d412f1 546 /* No size or alignment issues on any arch */
1da177e4 547 case XFS_IOC_DIOINFO:
1da177e4 548 case XFS_IOC_FSGEOMETRY:
1da177e4
LT		 549 case XFS_IOC_FSGETXATTR:
550 case XFS_IOC_FSSETXATTR:
551 case XFS_IOC_FSGETXATTRA:
552 case XFS_IOC_FSSETDM:
553 case XFS_IOC_GETBMAP:
554 case XFS_IOC_GETBMAPA:
555 case XFS_IOC_GETBMAPX:
1da177e4
LT		 556 case XFS_IOC_FSCOUNTS:
557 case XFS_IOC_SET_RESBLKS:
558 case XFS_IOC_GET_RESBLKS:
1da177e4 559 case XFS_IOC_FSGROWFSLOG:
1da177e4
LT		 560 case XFS_IOC_GOINGDOWN:
561 case XFS_IOC_ERROR_INJECTION:
562 case XFS_IOC_ERROR_CLEARALL:
4d4be482 563 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 564#ifndef BROKEN_X86_ALIGNMENT
565 /* These are handled fine if no alignment issues */
566 case XFS_IOC_ALLOCSP:
567 case XFS_IOC_FREESP:
568 case XFS_IOC_RESVSP:
569 case XFS_IOC_UNRESVSP:
570 case XFS_IOC_ALLOCSP64:
571 case XFS_IOC_FREESP64:
572 case XFS_IOC_RESVSP64:
573 case XFS_IOC_UNRESVSP64:
574 case XFS_IOC_FSGEOMETRY_V1:
575 case XFS_IOC_FSGROWFSDATA:
576 case XFS_IOC_FSGROWFSRT:
44722352 577 case XFS_IOC_ZERO_RANGE:
4d4be482 578 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 579#else
526c420c
ES		 580 case XFS_IOC_ALLOCSP_32:
581 case XFS_IOC_FREESP_32:
582 case XFS_IOC_ALLOCSP64_32:
583 case XFS_IOC_FREESP64_32:
584 case XFS_IOC_RESVSP_32:
585 case XFS_IOC_UNRESVSP_32:
586 case XFS_IOC_RESVSP64_32:
8c1fdd0b
CH		 587 case XFS_IOC_UNRESVSP64_32:
588 case XFS_IOC_ZERO_RANGE_32: {
d5547f9f 589 struct xfs_flock64 bf;
590
591 if (xfs_compat_flock64_copyin(&bf, arg))
592 return -XFS_ERROR(EFAULT);
526c420c 593 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
d5547f9f 594 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
595 }
547e00c3 596 case XFS_IOC_FSGEOMETRY_V1_32:
d5547f9f 597 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
471d5910 598 case XFS_IOC_FSGROWFSDATA_32: {
599 struct xfs_growfs_data in;
600
601 if (xfs_compat_growfs_data_copyin(&in, arg))
602 return -XFS_ERROR(EFAULT);
d9457dc0
JK		 603 error = mnt_want_write_file(filp);
604 if (error)
605 return error;
471d5910 606 error = xfs_growfs_data(mp, &in);
d9457dc0 607 mnt_drop_write_file(filp);
471d5910 608 return -error;
609 }
610 case XFS_IOC_FSGROWFSRT_32: {
611 struct xfs_growfs_rt in;
612
613 if (xfs_compat_growfs_rt_copyin(&in, arg))
614 return -XFS_ERROR(EFAULT);
d9457dc0
JK		 615 error = mnt_want_write_file(filp);
616 if (error)
617 return error;
471d5910 618 error = xfs_growfs_rt(mp, &in);
d9457dc0 619 mnt_drop_write_file(filp);
471d5910 620 return -error;
621 }
1da177e4 622#endif
e5d412f1 623 /* long changes size, but xfs only copiese out 32 bits */
624 case XFS_IOC_GETXFLAGS_32:
625 case XFS_IOC_SETXFLAGS_32:
626 case XFS_IOC_GETVERSION_32:
627 cmd = _NATIVE_IOC(cmd, long);
4d4be482 628 return xfs_file_ioctl(filp, cmd, p);
3725867d 629 case XFS_IOC_SWAPEXT_32: {
e5d412f1 630 struct xfs_swapext sxp;
631 struct compat_xfs_swapext __user *sxu = arg;
632
633 /* Bulk copy in up to the sx_stat field, then copy bstat */
634 if (copy_from_user(&sxp, sxu,
635 offsetof(struct xfs_swapext, sx_stat)) ||
636 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
637 return -XFS_ERROR(EFAULT);
d9457dc0
JK		 638 error = mnt_want_write_file(filp);
639 if (error)
640 return error;
e5d412f1 641 error = xfs_swapext(&sxp);
d9457dc0 642 mnt_drop_write_file(filp);
e5d412f1 643 return -error;
644 }
faa63e95
MM		 645 case XFS_IOC_FSBULKSTAT_32:
646 case XFS_IOC_FSBULKSTAT_SINGLE_32:
647 case XFS_IOC_FSINUMBERS_32:
2ee4fa5c 648 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
1fa503df
MM		 649 case XFS_IOC_FD_TO_HANDLE_32:
650 case XFS_IOC_PATH_TO_HANDLE_32:
d5547f9f 651 case XFS_IOC_PATH_TO_FSHANDLE_32: {
652 struct xfs_fsop_handlereq hreq;
653
654 if (xfs_compat_handlereq_copyin(&hreq, arg))
655 return -XFS_ERROR(EFAULT);
1fa503df 656 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
d5547f9f 657 return xfs_find_handle(cmd, &hreq);
658 }
659 case XFS_IOC_OPEN_BY_HANDLE_32: {
660 struct xfs_fsop_handlereq hreq;
661
662 if (xfs_compat_handlereq_copyin(&hreq, arg))
663 return -XFS_ERROR(EFAULT);
ab596ad8 664 return xfs_open_by_handle(filp, &hreq);
d5547f9f 665 }
666 case XFS_IOC_READLINK_BY_HANDLE_32: {
667 struct xfs_fsop_handlereq hreq;
668
669 if (xfs_compat_handlereq_copyin(&hreq, arg))
670 return -XFS_ERROR(EFAULT);
ab596ad8 671 return xfs_readlink_by_handle(filp, &hreq);
d5547f9f 672 }
ebeecd2b 673 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
ab596ad8 674 return xfs_compat_attrlist_by_handle(filp, arg);
28750975 675 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
ab596ad8 676 return xfs_compat_attrmulti_by_handle(filp, arg);
710d62aa 677 case XFS_IOC_FSSETDM_BY_HANDLE_32:
ab596ad8 678 return xfs_compat_fssetdm_by_handle(filp, arg);
1da177e4 679 default:
d5547f9f 680 return -XFS_ERROR(ENOIOCTLCMD);
1da177e4 681 }
1da177e4 682}