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xfs: trim writepage mapping to within eof
[mirror_ubuntu-artful-kernel.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>
7c0f6ba6 22#include <linux/uaccess.h>
e89c0413 23#include <linux/fsmap.h>
1da177e4 24#include "xfs.h"
1da177e4 25#include "xfs_fs.h"
a4fbe6ab 26#include "xfs_format.h"
239880ef
DC		 27#include "xfs_log_format.h"
28#include "xfs_trans_resv.h"
faa63e95 29#include "xfs_mount.h"
faa63e95
MM		 30#include "xfs_inode.h"
31#include "xfs_itable.h"
32#include "xfs_error.h"
d5547f9f 33#include "xfs_fsops.h"
471d5910 34#include "xfs_alloc.h"
35#include "xfs_rtalloc.h"
ebeecd2b 36#include "xfs_attr.h"
d5547f9f 37#include "xfs_ioctl.h"
a8272ce0 38#include "xfs_ioctl32.h"
0b1b213f 39#include "xfs_trace.h"
1da177e4 40
526c420c
ES		 41#define _NATIVE_IOC(cmd, type) \
42 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
43
ffae263a 44#ifdef BROKEN_X86_ALIGNMENT
d5547f9f 45STATIC int
46xfs_compat_flock64_copyin(
47 xfs_flock64_t *bf,
48 compat_xfs_flock64_t __user *arg32)
526c420c 49{
d5547f9f 50 if (get_user(bf->l_type, &arg32->l_type) ||
51 get_user(bf->l_whence, &arg32->l_whence) ||
52 get_user(bf->l_start, &arg32->l_start) ||
53 get_user(bf->l_len, &arg32->l_len) ||
54 get_user(bf->l_sysid, &arg32->l_sysid) ||
55 get_user(bf->l_pid, &arg32->l_pid) ||
56 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
b474c7ae 57 return -EFAULT;
d5547f9f 58 return 0;
526c420c
ES		 59}
60
d5547f9f 61STATIC int
62xfs_compat_ioc_fsgeometry_v1(
63 struct xfs_mount *mp,
64 compat_xfs_fsop_geom_v1_t __user *arg32)
547e00c3 65{
d5547f9f 66 xfs_fsop_geom_t fsgeo;
67 int error;
547e00c3 68
d5547f9f 69 error = xfs_fs_geometry(mp, &fsgeo, 3);
70 if (error)
2451337d 71 return error;
d5547f9f 72 /* The 32-bit variant simply has some padding at the end */
73 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
b474c7ae 74 return -EFAULT;
d5547f9f 75 return 0;
547e00c3
MM		 76}
77
471d5910 78STATIC int
79xfs_compat_growfs_data_copyin(
80 struct xfs_growfs_data *in,
81 compat_xfs_growfs_data_t __user *arg32)
82{
83 if (get_user(in->newblocks, &arg32->newblocks) ||
84 get_user(in->imaxpct, &arg32->imaxpct))
b474c7ae 85 return -EFAULT;
471d5910 86 return 0;
87}
88
89STATIC int
90xfs_compat_growfs_rt_copyin(
91 struct xfs_growfs_rt *in,
92 compat_xfs_growfs_rt_t __user *arg32)
93{
94 if (get_user(in->newblocks, &arg32->newblocks) ||
95 get_user(in->extsize, &arg32->extsize))
b474c7ae 96 return -EFAULT;
471d5910 97 return 0;
98}
99
d5547f9f 100STATIC int
101xfs_inumbers_fmt_compat(
102 void __user *ubuffer,
549fa006 103 const struct xfs_inogrp *buffer,
d5547f9f 104 long count,
105 long *written)
faa63e95 106{
d5547f9f 107 compat_xfs_inogrp_t __user *p32 = ubuffer;
108 long i;
faa63e95
MM		 109
110 for (i = 0; i < count; i++) {
111 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
112 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
113 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
b474c7ae 114 return -EFAULT;
faa63e95
MM		 115 }
116 *written = count * sizeof(*p32);
117 return 0;
118}
119
1da177e4 120#else
faa63e95 121#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
e5d412f1 122#endif /* BROKEN_X86_ALIGNMENT */
faa63e95 123
e94fc4a4 124STATIC int
125xfs_ioctl32_bstime_copyin(
126 xfs_bstime_t *bstime,
127 compat_xfs_bstime_t __user *bstime32)
128{
129 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
130
131 if (get_user(sec32, &bstime32->tv_sec) ||
132 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
b474c7ae 133 return -EFAULT;
e94fc4a4 134 bstime->tv_sec = sec32;
135 return 0;
136}
137
138/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
139STATIC int
140xfs_ioctl32_bstat_copyin(
141 xfs_bstat_t *bstat,
142 compat_xfs_bstat_t __user *bstat32)
143{
144 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
145 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
146 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
147 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
148 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
149 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
150 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
151 get_user(bstat->bs_size, &bstat32->bs_size) ||
152 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
153 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
154 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
155 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
156 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
157 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
158 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
159 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
6743099c
AM		 160 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
161 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
b1d6cc02 162 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
e94fc4a4 163 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
164 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
165 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
b474c7ae 166 return -EFAULT;
e94fc4a4 167 return 0;
168}
169
faa63e95
MM		 170/* XFS_IOC_FSBULKSTAT and friends */
171
d5547f9f 172STATIC int
173xfs_bstime_store_compat(
174 compat_xfs_bstime_t __user *p32,
175 const xfs_bstime_t *p)
faa63e95 176{
d5547f9f 177 __s32 sec32;
faa63e95
MM		 178
179 sec32 = p->tv_sec;
180 if (put_user(sec32, &p32->tv_sec) ||
181 put_user(p->tv_nsec, &p32->tv_nsec))
b474c7ae 182 return -EFAULT;
faa63e95
MM		 183 return 0;
184}
185
65fbaf24 186/* Return 0 on success or positive error (to xfs_bulkstat()) */
d5547f9f 187STATIC int
188xfs_bulkstat_one_fmt_compat(
faa63e95 189 void __user *ubuffer,
65fbaf24 190 int ubsize,
191 int *ubused,
faa63e95
MM		 192 const xfs_bstat_t *buffer)
193{
d5547f9f 194 compat_xfs_bstat_t __user *p32 = ubuffer;
faa63e95 195
65fbaf24 196 if (ubsize < sizeof(*p32))
2451337d 197 return -ENOMEM;
65fbaf24 198
199 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
200 put_user(buffer->bs_mode, &p32->bs_mode) ||
201 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
202 put_user(buffer->bs_uid, &p32->bs_uid) ||
203 put_user(buffer->bs_gid, &p32->bs_gid) ||
204 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
205 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
206 put_user(buffer->bs_size, &p32->bs_size) ||
faa63e95
MM		 207 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
208 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
209 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
65fbaf24 210 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
211 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
212 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
213 put_user(buffer->bs_extents, &p32->bs_extents) ||
214 put_user(buffer->bs_gen, &p32->bs_gen) ||
215 put_user(buffer->bs_projid, &p32->bs_projid) ||
6743099c 216 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
b1d6cc02 217 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
65fbaf24 218 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
219 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
faa63e95 220 put_user(buffer->bs_aextents, &p32->bs_aextents))
2451337d 221 return -EFAULT;
65fbaf24 222 if (ubused)
223 *ubused = sizeof(*p32);
224 return 0;
faa63e95
MM		 225}
226
2ee4fa5c 227STATIC int
228xfs_bulkstat_one_compat(
229 xfs_mount_t *mp, /* mount point for filesystem */
230 xfs_ino_t ino, /* inode number to get data for */
231 void __user *buffer, /* buffer to place output in */
232 int ubsize, /* size of buffer */
2ee4fa5c 233 int *ubused, /* bytes used by me */
2ee4fa5c 234 int *stat) /* BULKSTAT_RV_... */
235{
236 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
7b6259e7 237 xfs_bulkstat_one_fmt_compat,
7dce11db 238 ubused, stat);
2ee4fa5c 239}
240
faa63e95
MM		 241/* copied from xfs_ioctl.c */
242STATIC int
2ee4fa5c 243xfs_compat_ioc_bulkstat(
244 xfs_mount_t *mp,
245 unsigned int cmd,
246 compat_xfs_fsop_bulkreq_t __user *p32)
1da177e4 247{
1da177e4 248 u32 addr;
faa63e95
MM		 249 xfs_fsop_bulkreq_t bulkreq;
250 int count; /* # of records returned */
251 xfs_ino_t inlast; /* last inode number */
252 int done;
253 int error;
254
255 /* done = 1 if there are more stats to get and if bulkstat */
256 /* should be called again (unused here, but used in dmapi) */
1da177e4 257
faa63e95 258 if (!capable(CAP_SYS_ADMIN))
b474c7ae 259 return -EPERM;
faa63e95
MM		 260
261 if (XFS_FORCED_SHUTDOWN(mp))
b474c7ae 262 return -EIO;
faa63e95
MM		 263
264 if (get_user(addr, &p32->lastip))
b474c7ae 265 return -EFAULT;
faa63e95
MM		 266 bulkreq.lastip = compat_ptr(addr);
267 if (get_user(bulkreq.icount, &p32->icount) ||
268 get_user(addr, &p32->ubuffer))
b474c7ae 269 return -EFAULT;
faa63e95
MM		 270 bulkreq.ubuffer = compat_ptr(addr);
271 if (get_user(addr, &p32->ocount))
b474c7ae 272 return -EFAULT;
faa63e95 273 bulkreq.ocount = compat_ptr(addr);
1da177e4 274
faa63e95 275 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
b474c7ae 276 return -EFAULT;
faa63e95
MM		 277
278 if ((count = bulkreq.icount) <= 0)
b474c7ae 279 return -EINVAL;
faa63e95 280
cd57e594 281 if (bulkreq.ubuffer == NULL)
b474c7ae 282 return -EINVAL;
cd57e594 283
af819d27 284 if (cmd == XFS_IOC_FSINUMBERS_32) {
faa63e95
MM		 285 error = xfs_inumbers(mp, &inlast, &count,
286 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
af819d27 287 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
288 int res;
289
290 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
8d2a5e6e 291 sizeof(compat_xfs_bstat_t), NULL, &res);
af819d27 292 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
faa63e95 293 error = xfs_bulkstat(mp, &inlast, &count,
7dce11db
CH		 294 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
295 bulkreq.ubuffer, &done);
af819d27 296 } else
2451337d 297 error = -EINVAL;
faa63e95 298 if (error)
2451337d 299 return error;
faa63e95
MM		 300
301 if (bulkreq.ocount != NULL) {
302 if (copy_to_user(bulkreq.lastip, &inlast,
303 sizeof(xfs_ino_t)))
b474c7ae 304 return -EFAULT;
faa63e95
MM		 305
306 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
b474c7ae 307 return -EFAULT;
faa63e95
MM		 308 }
309
310 return 0;
1da177e4 311}
faa63e95 312
d5547f9f 313STATIC int
314xfs_compat_handlereq_copyin(
315 xfs_fsop_handlereq_t *hreq,
316 compat_xfs_fsop_handlereq_t __user *arg32)
1fa503df 317{
d5547f9f 318 compat_xfs_fsop_handlereq_t hreq32;
319
320 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
b474c7ae 321 return -EFAULT;
d5547f9f 322
323 hreq->fd = hreq32.fd;
324 hreq->path = compat_ptr(hreq32.path);
325 hreq->oflags = hreq32.oflags;
326 hreq->ihandle = compat_ptr(hreq32.ihandle);
327 hreq->ihandlen = hreq32.ihandlen;
328 hreq->ohandle = compat_ptr(hreq32.ohandle);
329 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
330
331 return 0;
1fa503df
MM		 332}
333
ab596ad8
CH		 334STATIC struct dentry *
335xfs_compat_handlereq_to_dentry(
336 struct file *parfilp,
337 compat_xfs_fsop_handlereq_t *hreq)
ebeecd2b 338{
ab596ad8
CH		 339 return xfs_handle_to_dentry(parfilp,
340 compat_ptr(hreq->ihandle), hreq->ihandlen);
ebeecd2b 341}
342
343STATIC int
344xfs_compat_attrlist_by_handle(
ab596ad8
CH		 345 struct file *parfilp,
346 void __user *arg)
ebeecd2b 347{
348 int error;
349 attrlist_cursor_kern_t *cursor;
350 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
ab596ad8 351 struct dentry *dentry;
ebeecd2b 352 char *kbuf;
353
354 if (!capable(CAP_SYS_ADMIN))
b474c7ae 355 return -EPERM;
ebeecd2b 356 if (copy_from_user(&al_hreq, arg,
357 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
b474c7ae 358 return -EFAULT;
31978b5c 359 if (al_hreq.buflen < sizeof(struct attrlist) ||
4e247614 360 al_hreq.buflen > XFS_XATTR_LIST_MAX)
b474c7ae 361 return -EINVAL;
ebeecd2b 362
363 /*
364 * Reject flags, only allow namespaces.
365 */
366 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
b474c7ae 367 return -EINVAL;
ebeecd2b 368
ab596ad8
CH		 369 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
370 if (IS_ERR(dentry))
371 return PTR_ERR(dentry);
ebeecd2b 372
ab596ad8 373 error = -ENOMEM;
fdd3ccee
DC		 374 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
375 if (!kbuf)
376 goto out_dput;
ebeecd2b 377
378 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
2b0143b5 379 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
ebeecd2b 380 al_hreq.flags, cursor);
381 if (error)
382 goto out_kfree;
383
384 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
385 error = -EFAULT;
386
fdd3ccee
DC		 387out_kfree:
388 kmem_free(kbuf);
389out_dput:
ab596ad8
CH		 390 dput(dentry);
391 return error;
ebeecd2b 392}
393
28750975 394STATIC int
395xfs_compat_attrmulti_by_handle(
ab596ad8
CH		 396 struct file *parfilp,
397 void __user *arg)
28750975 398{
399 int error;
400 compat_xfs_attr_multiop_t *ops;
401 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
ab596ad8 402 struct dentry *dentry;
28750975 403 unsigned int i, size;
a9273ca5 404 unsigned char *attr_name;
28750975 405
406 if (!capable(CAP_SYS_ADMIN))
b474c7ae 407 return -EPERM;
28750975 408 if (copy_from_user(&am_hreq, arg,
409 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
b474c7ae 410 return -EFAULT;
28750975 411
fda168c2
ZW		 412 /* overflow check */
413 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
414 return -E2BIG;
415
ab596ad8
CH		 416 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
417 if (IS_ERR(dentry))
418 return PTR_ERR(dentry);
28750975 419
2451337d 420 error = -E2BIG;
28750975 421 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
422 if (!size || size > 16 * PAGE_SIZE)
ab596ad8 423 goto out_dput;
28750975 424
0e639bde
LZ		 425 ops = memdup_user(compat_ptr(am_hreq.ops), size);
426 if (IS_ERR(ops)) {
4d949021 427 error = PTR_ERR(ops);
ab596ad8 428 goto out_dput;
0e639bde 429 }
28750975 430
2451337d 431 error = -ENOMEM;
28750975 432 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
433 if (!attr_name)
434 goto out_kfree_ops;
435
28750975 436 error = 0;
437 for (i = 0; i < am_hreq.opcount; i++) {
a9273ca5 438 ops[i].am_error = strncpy_from_user((char *)attr_name,
28750975 439 compat_ptr(ops[i].am_attrname),
440 MAXNAMELEN);
441 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
2451337d 442 error = -ERANGE;
28750975 443 if (ops[i].am_error < 0)
444 break;
445
446 switch (ops[i].am_opcode) {
447 case ATTR_OP_GET:
ab596ad8 448 ops[i].am_error = xfs_attrmulti_attr_get(
2b0143b5 449 d_inode(dentry), attr_name,
28750975 450 compat_ptr(ops[i].am_attrvalue),
451 &ops[i].am_length, ops[i].am_flags);
452 break;
453 case ATTR_OP_SET:
a561be71 454 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 455 if (ops[i].am_error)
456 break;
ab596ad8 457 ops[i].am_error = xfs_attrmulti_attr_set(
2b0143b5 458 d_inode(dentry), attr_name,
28750975 459 compat_ptr(ops[i].am_attrvalue),
460 ops[i].am_length, ops[i].am_flags);
2a79f17e 461 mnt_drop_write_file(parfilp);
28750975 462 break;
463 case ATTR_OP_REMOVE:
a561be71 464 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 465 if (ops[i].am_error)
466 break;
ab596ad8 467 ops[i].am_error = xfs_attrmulti_attr_remove(
2b0143b5 468 d_inode(dentry), attr_name,
ab596ad8 469 ops[i].am_flags);
2a79f17e 470 mnt_drop_write_file(parfilp);
28750975 471 break;
472 default:
2451337d 473 ops[i].am_error = -EINVAL;
28750975 474 }
475 }
476
477 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
2451337d 478 error = -EFAULT;
28750975 479
480 kfree(attr_name);
481 out_kfree_ops:
482 kfree(ops);
ab596ad8
CH		 483 out_dput:
484 dput(dentry);
2451337d 485 return error;
28750975 486}
487
710d62aa 488STATIC int
489xfs_compat_fssetdm_by_handle(
ab596ad8
CH		 490 struct file *parfilp,
491 void __user *arg)
710d62aa 492{
493 int error;
494 struct fsdmidata fsd;
495 compat_xfs_fsop_setdm_handlereq_t dmhreq;
ab596ad8 496 struct dentry *dentry;
710d62aa 497
498 if (!capable(CAP_MKNOD))
b474c7ae 499 return -EPERM;
710d62aa 500 if (copy_from_user(&dmhreq, arg,
501 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
b474c7ae 502 return -EFAULT;
710d62aa 503
ab596ad8
CH		 504 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
505 if (IS_ERR(dentry))
506 return PTR_ERR(dentry);
710d62aa 507
2b0143b5 508 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
b474c7ae 509 error = -EPERM;
710d62aa 510 goto out;
511 }
512
513 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
b474c7ae 514 error = -EFAULT;
710d62aa 515 goto out;
516 }
517
2b0143b5 518 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
710d62aa 519 fsd.fsd_dmstate);
520
521out:
ab596ad8 522 dput(dentry);
710d62aa 523 return error;
524}
525
4d4be482
CH		 526long
527xfs_file_compat_ioctl(
528 struct file *filp,
529 unsigned cmd,
530 unsigned long p)
1da177e4 531{
496ad9aa 532 struct inode *inode = file_inode(filp);
4d4be482
CH		 533 struct xfs_inode *ip = XFS_I(inode);
534 struct xfs_mount *mp = ip->i_mount;
535 void __user *arg = (void __user *)p;
4d4be482
CH		 536 int error;
537
cca28fb8 538 trace_xfs_file_compat_ioctl(ip);
1da177e4
LT		 539
540 switch (cmd) {
e5d412f1 541 /* No size or alignment issues on any arch */
1da177e4 542 case XFS_IOC_DIOINFO:
1da177e4 543 case XFS_IOC_FSGEOMETRY:
1da177e4
LT		 544 case XFS_IOC_FSGETXATTR:
545 case XFS_IOC_FSSETXATTR:
546 case XFS_IOC_FSGETXATTRA:
547 case XFS_IOC_FSSETDM:
548 case XFS_IOC_GETBMAP:
549 case XFS_IOC_GETBMAPA:
550 case XFS_IOC_GETBMAPX:
1da177e4
LT		 551 case XFS_IOC_FSCOUNTS:
552 case XFS_IOC_SET_RESBLKS:
553 case XFS_IOC_GET_RESBLKS:
1da177e4 554 case XFS_IOC_FSGROWFSLOG:
1da177e4
LT		 555 case XFS_IOC_GOINGDOWN:
556 case XFS_IOC_ERROR_INJECTION:
557 case XFS_IOC_ERROR_CLEARALL:
e89c0413 558 case FS_IOC_GETFSMAP:
4d4be482 559 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 560#ifndef BROKEN_X86_ALIGNMENT
561 /* These are handled fine if no alignment issues */
562 case XFS_IOC_ALLOCSP:
563 case XFS_IOC_FREESP:
564 case XFS_IOC_RESVSP:
565 case XFS_IOC_UNRESVSP:
566 case XFS_IOC_ALLOCSP64:
567 case XFS_IOC_FREESP64:
568 case XFS_IOC_RESVSP64:
569 case XFS_IOC_UNRESVSP64:
570 case XFS_IOC_FSGEOMETRY_V1:
571 case XFS_IOC_FSGROWFSDATA:
572 case XFS_IOC_FSGROWFSRT:
44722352 573 case XFS_IOC_ZERO_RANGE:
4d4be482 574 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 575#else
526c420c
ES		 576 case XFS_IOC_ALLOCSP_32:
577 case XFS_IOC_FREESP_32:
578 case XFS_IOC_ALLOCSP64_32:
579 case XFS_IOC_FREESP64_32:
580 case XFS_IOC_RESVSP_32:
581 case XFS_IOC_UNRESVSP_32:
582 case XFS_IOC_RESVSP64_32:
8c1fdd0b
CH		 583 case XFS_IOC_UNRESVSP64_32:
584 case XFS_IOC_ZERO_RANGE_32: {
d5547f9f 585 struct xfs_flock64 bf;
586
587 if (xfs_compat_flock64_copyin(&bf, arg))
b474c7ae 588 return -EFAULT;
526c420c 589 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
8f3e2058 590 return xfs_ioc_space(filp, cmd, &bf);
d5547f9f 591 }
547e00c3 592 case XFS_IOC_FSGEOMETRY_V1_32:
d5547f9f 593 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
471d5910 594 case XFS_IOC_FSGROWFSDATA_32: {
595 struct xfs_growfs_data in;
596
597 if (xfs_compat_growfs_data_copyin(&in, arg))
b474c7ae 598 return -EFAULT;
d9457dc0
JK		 599 error = mnt_want_write_file(filp);
600 if (error)
601 return error;
471d5910 602 error = xfs_growfs_data(mp, &in);
d9457dc0 603 mnt_drop_write_file(filp);
2451337d 604 return error;
471d5910 605 }
606 case XFS_IOC_FSGROWFSRT_32: {
607 struct xfs_growfs_rt in;
608
609 if (xfs_compat_growfs_rt_copyin(&in, arg))
b474c7ae 610 return -EFAULT;
d9457dc0
JK		 611 error = mnt_want_write_file(filp);
612 if (error)
613 return error;
471d5910 614 error = xfs_growfs_rt(mp, &in);
d9457dc0 615 mnt_drop_write_file(filp);
2451337d 616 return error;
471d5910 617 }
1da177e4 618#endif
e5d412f1 619 /* long changes size, but xfs only copiese out 32 bits */
620 case XFS_IOC_GETXFLAGS_32:
621 case XFS_IOC_SETXFLAGS_32:
622 case XFS_IOC_GETVERSION_32:
623 cmd = _NATIVE_IOC(cmd, long);
4d4be482 624 return xfs_file_ioctl(filp, cmd, p);
3725867d 625 case XFS_IOC_SWAPEXT_32: {
e5d412f1 626 struct xfs_swapext sxp;
627 struct compat_xfs_swapext __user *sxu = arg;
628
629 /* Bulk copy in up to the sx_stat field, then copy bstat */
630 if (copy_from_user(&sxp, sxu,
631 offsetof(struct xfs_swapext, sx_stat)) ||
632 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
b474c7ae 633 return -EFAULT;
d9457dc0
JK		 634 error = mnt_want_write_file(filp);
635 if (error)
636 return error;
a133d952 637 error = xfs_ioc_swapext(&sxp);
d9457dc0 638 mnt_drop_write_file(filp);
2451337d 639 return error;
e5d412f1 640 }
faa63e95
MM		 641 case XFS_IOC_FSBULKSTAT_32:
642 case XFS_IOC_FSBULKSTAT_SINGLE_32:
643 case XFS_IOC_FSINUMBERS_32:
2ee4fa5c 644 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
1fa503df
MM		 645 case XFS_IOC_FD_TO_HANDLE_32:
646 case XFS_IOC_PATH_TO_HANDLE_32:
d5547f9f 647 case XFS_IOC_PATH_TO_FSHANDLE_32: {
648 struct xfs_fsop_handlereq hreq;
649
650 if (xfs_compat_handlereq_copyin(&hreq, arg))
b474c7ae 651 return -EFAULT;
1fa503df 652 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
d5547f9f 653 return xfs_find_handle(cmd, &hreq);
654 }
655 case XFS_IOC_OPEN_BY_HANDLE_32: {
656 struct xfs_fsop_handlereq hreq;
657
658 if (xfs_compat_handlereq_copyin(&hreq, arg))
b474c7ae 659 return -EFAULT;
ab596ad8 660 return xfs_open_by_handle(filp, &hreq);
d5547f9f 661 }
662 case XFS_IOC_READLINK_BY_HANDLE_32: {
663 struct xfs_fsop_handlereq hreq;
664
665 if (xfs_compat_handlereq_copyin(&hreq, arg))
b474c7ae 666 return -EFAULT;
ab596ad8 667 return xfs_readlink_by_handle(filp, &hreq);
d5547f9f 668 }
ebeecd2b 669 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
ab596ad8 670 return xfs_compat_attrlist_by_handle(filp, arg);
28750975 671 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
ab596ad8 672 return xfs_compat_attrmulti_by_handle(filp, arg);
710d62aa 673 case XFS_IOC_FSSETDM_BY_HANDLE_32:
ab596ad8 674 return xfs_compat_fssetdm_by_handle(filp, arg);
1da177e4 675 default:
b474c7ae 676 return -ENOIOCTLCMD;
1da177e4 677 }
1da177e4 678}
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