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Merge branch 'for-5.0' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie...
[linux.git] / fs / xfs / xfs_ioctl32.c
CommitLineData
0b61f8a4 1// SPDX-License-Identifier: GPL-2.0
1da177e4 2/*
7b718769
NS		 3 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
1da177e4 5 */
1da177e4 6#include <linux/compat.h>
1da177e4 7#include <linux/ioctl.h>
62e194ec 8#include <linux/mount.h>
5a0e3ad6 9#include <linux/slab.h>
7c0f6ba6 10#include <linux/uaccess.h>
e89c0413 11#include <linux/fsmap.h>
1da177e4 12#include "xfs.h"
1da177e4 13#include "xfs_fs.h"
a4fbe6ab 14#include "xfs_format.h"
239880ef
DC		 15#include "xfs_log_format.h"
16#include "xfs_trans_resv.h"
faa63e95 17#include "xfs_mount.h"
faa63e95
MM		 18#include "xfs_inode.h"
19#include "xfs_itable.h"
20#include "xfs_error.h"
d5547f9f 21#include "xfs_fsops.h"
471d5910 22#include "xfs_alloc.h"
23#include "xfs_rtalloc.h"
ebeecd2b 24#include "xfs_attr.h"
d5547f9f 25#include "xfs_ioctl.h"
a8272ce0 26#include "xfs_ioctl32.h"
0b1b213f 27#include "xfs_trace.h"
c368ebcd 28#include "xfs_sb.h"
1da177e4 29
526c420c
ES		 30#define _NATIVE_IOC(cmd, type) \
31 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
32
ffae263a 33#ifdef BROKEN_X86_ALIGNMENT
d5547f9f 34STATIC int
35xfs_compat_flock64_copyin(
36 xfs_flock64_t *bf,
37 compat_xfs_flock64_t __user *arg32)
526c420c 38{
d5547f9f 39 if (get_user(bf->l_type, &arg32->l_type) ||
40 get_user(bf->l_whence, &arg32->l_whence) ||
41 get_user(bf->l_start, &arg32->l_start) ||
42 get_user(bf->l_len, &arg32->l_len) ||
43 get_user(bf->l_sysid, &arg32->l_sysid) ||
44 get_user(bf->l_pid, &arg32->l_pid) ||
45 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
b474c7ae 46 return -EFAULT;
d5547f9f 47 return 0;
526c420c
ES		 48}
49
d5547f9f 50STATIC int
51xfs_compat_ioc_fsgeometry_v1(
52 struct xfs_mount *mp,
53 compat_xfs_fsop_geom_v1_t __user *arg32)
547e00c3 54{
d5547f9f 55 xfs_fsop_geom_t fsgeo;
56 int error;
547e00c3 57
ac503a4c 58 error = xfs_fs_geometry(&mp->m_sb, &fsgeo, 3);
d5547f9f 59 if (error)
2451337d 60 return error;
d5547f9f 61 /* The 32-bit variant simply has some padding at the end */
62 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
b474c7ae 63 return -EFAULT;
d5547f9f 64 return 0;
547e00c3
MM		 65}
66
471d5910 67STATIC int
68xfs_compat_growfs_data_copyin(
69 struct xfs_growfs_data *in,
70 compat_xfs_growfs_data_t __user *arg32)
71{
72 if (get_user(in->newblocks, &arg32->newblocks) ||
73 get_user(in->imaxpct, &arg32->imaxpct))
b474c7ae 74 return -EFAULT;
471d5910 75 return 0;
76}
77
78STATIC int
79xfs_compat_growfs_rt_copyin(
80 struct xfs_growfs_rt *in,
81 compat_xfs_growfs_rt_t __user *arg32)
82{
83 if (get_user(in->newblocks, &arg32->newblocks) ||
84 get_user(in->extsize, &arg32->extsize))
b474c7ae 85 return -EFAULT;
471d5910 86 return 0;
87}
88
d5547f9f 89STATIC int
90xfs_inumbers_fmt_compat(
91 void __user *ubuffer,
549fa006 92 const struct xfs_inogrp *buffer,
d5547f9f 93 long count,
94 long *written)
faa63e95 95{
d5547f9f 96 compat_xfs_inogrp_t __user *p32 = ubuffer;
97 long i;
faa63e95
MM		 98
99 for (i = 0; i < count; i++) {
100 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
101 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
102 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
b474c7ae 103 return -EFAULT;
faa63e95
MM		 104 }
105 *written = count * sizeof(*p32);
106 return 0;
107}
108
1da177e4 109#else
faa63e95 110#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
e5d412f1 111#endif /* BROKEN_X86_ALIGNMENT */
faa63e95 112
e94fc4a4 113STATIC int
114xfs_ioctl32_bstime_copyin(
115 xfs_bstime_t *bstime,
116 compat_xfs_bstime_t __user *bstime32)
117{
118 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
119
120 if (get_user(sec32, &bstime32->tv_sec) ||
121 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
b474c7ae 122 return -EFAULT;
e94fc4a4 123 bstime->tv_sec = sec32;
124 return 0;
125}
126
127/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
128STATIC int
129xfs_ioctl32_bstat_copyin(
130 xfs_bstat_t *bstat,
131 compat_xfs_bstat_t __user *bstat32)
132{
133 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
134 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
135 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
136 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
137 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
138 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
139 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
140 get_user(bstat->bs_size, &bstat32->bs_size) ||
141 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
142 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
143 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
144 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
145 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
146 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
147 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
148 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
6743099c
AM		 149 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
150 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
b1d6cc02 151 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
e94fc4a4 152 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
153 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
154 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
b474c7ae 155 return -EFAULT;
e94fc4a4 156 return 0;
157}
158
faa63e95
MM		 159/* XFS_IOC_FSBULKSTAT and friends */
160
d5547f9f 161STATIC int
162xfs_bstime_store_compat(
163 compat_xfs_bstime_t __user *p32,
164 const xfs_bstime_t *p)
faa63e95 165{
d5547f9f 166 __s32 sec32;
faa63e95
MM		 167
168 sec32 = p->tv_sec;
169 if (put_user(sec32, &p32->tv_sec) ||
170 put_user(p->tv_nsec, &p32->tv_nsec))
b474c7ae 171 return -EFAULT;
faa63e95
MM		 172 return 0;
173}
174
65fbaf24 175/* Return 0 on success or positive error (to xfs_bulkstat()) */
d5547f9f 176STATIC int
177xfs_bulkstat_one_fmt_compat(
faa63e95 178 void __user *ubuffer,
65fbaf24 179 int ubsize,
180 int *ubused,
faa63e95
MM		 181 const xfs_bstat_t *buffer)
182{
d5547f9f 183 compat_xfs_bstat_t __user *p32 = ubuffer;
faa63e95 184
65fbaf24 185 if (ubsize < sizeof(*p32))
2451337d 186 return -ENOMEM;
65fbaf24 187
188 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
189 put_user(buffer->bs_mode, &p32->bs_mode) ||
190 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
191 put_user(buffer->bs_uid, &p32->bs_uid) ||
192 put_user(buffer->bs_gid, &p32->bs_gid) ||
193 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
194 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
195 put_user(buffer->bs_size, &p32->bs_size) ||
faa63e95
MM		 196 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
197 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
198 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
65fbaf24 199 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
200 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
201 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
202 put_user(buffer->bs_extents, &p32->bs_extents) ||
203 put_user(buffer->bs_gen, &p32->bs_gen) ||
204 put_user(buffer->bs_projid, &p32->bs_projid) ||
6743099c 205 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
b1d6cc02 206 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
65fbaf24 207 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
208 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
faa63e95 209 put_user(buffer->bs_aextents, &p32->bs_aextents))
2451337d 210 return -EFAULT;
65fbaf24 211 if (ubused)
212 *ubused = sizeof(*p32);
213 return 0;
faa63e95
MM		 214}
215
2ee4fa5c 216STATIC int
217xfs_bulkstat_one_compat(
218 xfs_mount_t *mp, /* mount point for filesystem */
219 xfs_ino_t ino, /* inode number to get data for */
220 void __user *buffer, /* buffer to place output in */
221 int ubsize, /* size of buffer */
2ee4fa5c 222 int *ubused, /* bytes used by me */
2ee4fa5c 223 int *stat) /* BULKSTAT_RV_... */
224{
225 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
7b6259e7 226 xfs_bulkstat_one_fmt_compat,
7dce11db 227 ubused, stat);
2ee4fa5c 228}
229
faa63e95
MM		 230/* copied from xfs_ioctl.c */
231STATIC int
2ee4fa5c 232xfs_compat_ioc_bulkstat(
233 xfs_mount_t *mp,
234 unsigned int cmd,
235 compat_xfs_fsop_bulkreq_t __user *p32)
1da177e4 236{
1da177e4 237 u32 addr;
faa63e95
MM		 238 xfs_fsop_bulkreq_t bulkreq;
239 int count; /* # of records returned */
240 xfs_ino_t inlast; /* last inode number */
241 int done;
242 int error;
243
7ca860e3
NB		 244 /*
245 * Output structure handling functions. Depending on the command,
246 * either the xfs_bstat and xfs_inogrp structures are written out
247 * to userpace memory via bulkreq.ubuffer. Normally the compat
248 * functions and structure size are the correct ones to use ...
249 */
250 inumbers_fmt_pf inumbers_func = xfs_inumbers_fmt_compat;
251 bulkstat_one_pf bs_one_func = xfs_bulkstat_one_compat;
252 size_t bs_one_size = sizeof(struct compat_xfs_bstat);
253
254#ifdef CONFIG_X86_X32
255 if (in_x32_syscall()) {
256 /*
257 * ... but on x32 the input xfs_fsop_bulkreq has pointers
258 * which must be handled in the "compat" (32-bit) way, while
259 * the xfs_bstat and xfs_inogrp structures follow native 64-
260 * bit layout convention. So adjust accordingly, otherwise
261 * the data written out in compat layout will not match what
262 * x32 userspace expects.
263 */
264 inumbers_func = xfs_inumbers_fmt;
265 bs_one_func = xfs_bulkstat_one;
266 bs_one_size = sizeof(struct xfs_bstat);
267 }
268#endif
269
faa63e95
MM		 270 /* done = 1 if there are more stats to get and if bulkstat */
271 /* should be called again (unused here, but used in dmapi) */
1da177e4 272
faa63e95 273 if (!capable(CAP_SYS_ADMIN))
b474c7ae 274 return -EPERM;
faa63e95
MM		 275
276 if (XFS_FORCED_SHUTDOWN(mp))
b474c7ae 277 return -EIO;
faa63e95
MM		 278
279 if (get_user(addr, &p32->lastip))
b474c7ae 280 return -EFAULT;
faa63e95
MM		 281 bulkreq.lastip = compat_ptr(addr);
282 if (get_user(bulkreq.icount, &p32->icount) ||
283 get_user(addr, &p32->ubuffer))
b474c7ae 284 return -EFAULT;
faa63e95
MM		 285 bulkreq.ubuffer = compat_ptr(addr);
286 if (get_user(addr, &p32->ocount))
b474c7ae 287 return -EFAULT;
faa63e95 288 bulkreq.ocount = compat_ptr(addr);
1da177e4 289
faa63e95 290 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
b474c7ae 291 return -EFAULT;
faa63e95
MM		 292
293 if ((count = bulkreq.icount) <= 0)
b474c7ae 294 return -EINVAL;
faa63e95 295
cd57e594 296 if (bulkreq.ubuffer == NULL)
b474c7ae 297 return -EINVAL;
cd57e594 298
af819d27 299 if (cmd == XFS_IOC_FSINUMBERS_32) {
faa63e95 300 error = xfs_inumbers(mp, &inlast, &count,
7ca860e3 301 bulkreq.ubuffer, inumbers_func);
af819d27 302 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
303 int res;
304
7ca860e3
NB		 305 error = bs_one_func(mp, inlast, bulkreq.ubuffer,
306 bs_one_size, NULL, &res);
af819d27 307 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
faa63e95 308 error = xfs_bulkstat(mp, &inlast, &count,
7ca860e3 309 bs_one_func, bs_one_size,
7dce11db 310 bulkreq.ubuffer, &done);
af819d27 311 } else
2451337d 312 error = -EINVAL;
faa63e95 313 if (error)
2451337d 314 return error;
faa63e95
MM		 315
316 if (bulkreq.ocount != NULL) {
317 if (copy_to_user(bulkreq.lastip, &inlast,
318 sizeof(xfs_ino_t)))
b474c7ae 319 return -EFAULT;
faa63e95
MM		 320
321 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
b474c7ae 322 return -EFAULT;
faa63e95
MM		 323 }
324
325 return 0;
1da177e4 326}
faa63e95 327
d5547f9f 328STATIC int
329xfs_compat_handlereq_copyin(
330 xfs_fsop_handlereq_t *hreq,
331 compat_xfs_fsop_handlereq_t __user *arg32)
1fa503df 332{
d5547f9f 333 compat_xfs_fsop_handlereq_t hreq32;
334
335 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
b474c7ae 336 return -EFAULT;
d5547f9f 337
338 hreq->fd = hreq32.fd;
339 hreq->path = compat_ptr(hreq32.path);
340 hreq->oflags = hreq32.oflags;
341 hreq->ihandle = compat_ptr(hreq32.ihandle);
342 hreq->ihandlen = hreq32.ihandlen;
343 hreq->ohandle = compat_ptr(hreq32.ohandle);
344 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
345
346 return 0;
1fa503df
MM		 347}
348
ab596ad8
CH		 349STATIC struct dentry *
350xfs_compat_handlereq_to_dentry(
351 struct file *parfilp,
352 compat_xfs_fsop_handlereq_t *hreq)
ebeecd2b 353{
ab596ad8
CH		 354 return xfs_handle_to_dentry(parfilp,
355 compat_ptr(hreq->ihandle), hreq->ihandlen);
ebeecd2b 356}
357
358STATIC int
359xfs_compat_attrlist_by_handle(
ab596ad8
CH		 360 struct file *parfilp,
361 void __user *arg)
ebeecd2b 362{
363 int error;
364 attrlist_cursor_kern_t *cursor;
c456d644 365 compat_xfs_fsop_attrlist_handlereq_t __user *p = arg;
ebeecd2b 366 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
ab596ad8 367 struct dentry *dentry;
ebeecd2b 368 char *kbuf;
369
370 if (!capable(CAP_SYS_ADMIN))
b474c7ae 371 return -EPERM;
ebeecd2b 372 if (copy_from_user(&al_hreq, arg,
373 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
b474c7ae 374 return -EFAULT;
31978b5c 375 if (al_hreq.buflen < sizeof(struct attrlist) ||
4e247614 376 al_hreq.buflen > XFS_XATTR_LIST_MAX)
b474c7ae 377 return -EINVAL;
ebeecd2b 378
379 /*
380 * Reject flags, only allow namespaces.
381 */
382 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
b474c7ae 383 return -EINVAL;
ebeecd2b 384
ab596ad8
CH		 385 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
386 if (IS_ERR(dentry))
387 return PTR_ERR(dentry);
ebeecd2b 388
ab596ad8 389 error = -ENOMEM;
fdd3ccee
DC		 390 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
391 if (!kbuf)
392 goto out_dput;
ebeecd2b 393
394 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
2b0143b5 395 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
ebeecd2b 396 al_hreq.flags, cursor);
397 if (error)
398 goto out_kfree;
399
c456d644
NB		 400 if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
401 error = -EFAULT;
402 goto out_kfree;
403 }
404
ebeecd2b 405 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
406 error = -EFAULT;
407
fdd3ccee
DC		 408out_kfree:
409 kmem_free(kbuf);
410out_dput:
ab596ad8
CH		 411 dput(dentry);
412 return error;
ebeecd2b 413}
414
28750975 415STATIC int
416xfs_compat_attrmulti_by_handle(
ab596ad8
CH		 417 struct file *parfilp,
418 void __user *arg)
28750975 419{
420 int error;
421 compat_xfs_attr_multiop_t *ops;
422 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
ab596ad8 423 struct dentry *dentry;
28750975 424 unsigned int i, size;
a9273ca5 425 unsigned char *attr_name;
28750975 426
427 if (!capable(CAP_SYS_ADMIN))
b474c7ae 428 return -EPERM;
28750975 429 if (copy_from_user(&am_hreq, arg,
430 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
b474c7ae 431 return -EFAULT;
28750975 432
fda168c2
ZW		 433 /* overflow check */
434 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
435 return -E2BIG;
436
ab596ad8
CH		 437 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
438 if (IS_ERR(dentry))
439 return PTR_ERR(dentry);
28750975 440
2451337d 441 error = -E2BIG;
28750975 442 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
443 if (!size || size > 16 * PAGE_SIZE)
ab596ad8 444 goto out_dput;
28750975 445
0e639bde
LZ		 446 ops = memdup_user(compat_ptr(am_hreq.ops), size);
447 if (IS_ERR(ops)) {
4d949021 448 error = PTR_ERR(ops);
ab596ad8 449 goto out_dput;
0e639bde 450 }
28750975 451
2451337d 452 error = -ENOMEM;
28750975 453 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
454 if (!attr_name)
455 goto out_kfree_ops;
456
28750975 457 error = 0;
458 for (i = 0; i < am_hreq.opcount; i++) {
a9273ca5 459 ops[i].am_error = strncpy_from_user((char *)attr_name,
28750975 460 compat_ptr(ops[i].am_attrname),
461 MAXNAMELEN);
462 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
2451337d 463 error = -ERANGE;
28750975 464 if (ops[i].am_error < 0)
465 break;
466
467 switch (ops[i].am_opcode) {
468 case ATTR_OP_GET:
ab596ad8 469 ops[i].am_error = xfs_attrmulti_attr_get(
2b0143b5 470 d_inode(dentry), attr_name,
28750975 471 compat_ptr(ops[i].am_attrvalue),
472 &ops[i].am_length, ops[i].am_flags);
473 break;
474 case ATTR_OP_SET:
a561be71 475 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 476 if (ops[i].am_error)
477 break;
ab596ad8 478 ops[i].am_error = xfs_attrmulti_attr_set(
2b0143b5 479 d_inode(dentry), attr_name,
28750975 480 compat_ptr(ops[i].am_attrvalue),
481 ops[i].am_length, ops[i].am_flags);
2a79f17e 482 mnt_drop_write_file(parfilp);
28750975 483 break;
484 case ATTR_OP_REMOVE:
a561be71 485 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 486 if (ops[i].am_error)
487 break;
ab596ad8 488 ops[i].am_error = xfs_attrmulti_attr_remove(
2b0143b5 489 d_inode(dentry), attr_name,
ab596ad8 490 ops[i].am_flags);
2a79f17e 491 mnt_drop_write_file(parfilp);
28750975 492 break;
493 default:
2451337d 494 ops[i].am_error = -EINVAL;
28750975 495 }
496 }
497
498 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
2451337d 499 error = -EFAULT;
28750975 500
501 kfree(attr_name);
502 out_kfree_ops:
503 kfree(ops);
ab596ad8
CH		 504 out_dput:
505 dput(dentry);
2451337d 506 return error;
28750975 507}
508
710d62aa 509STATIC int
510xfs_compat_fssetdm_by_handle(
ab596ad8
CH		 511 struct file *parfilp,
512 void __user *arg)
710d62aa 513{
514 int error;
515 struct fsdmidata fsd;
516 compat_xfs_fsop_setdm_handlereq_t dmhreq;
ab596ad8 517 struct dentry *dentry;
710d62aa 518
519 if (!capable(CAP_MKNOD))
b474c7ae 520 return -EPERM;
710d62aa 521 if (copy_from_user(&dmhreq, arg,
522 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
b474c7ae 523 return -EFAULT;
710d62aa 524
ab596ad8
CH		 525 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
526 if (IS_ERR(dentry))
527 return PTR_ERR(dentry);
710d62aa 528
2b0143b5 529 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
b474c7ae 530 error = -EPERM;
710d62aa 531 goto out;
532 }
533
534 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
b474c7ae 535 error = -EFAULT;
710d62aa 536 goto out;
537 }
538
2b0143b5 539 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
710d62aa 540 fsd.fsd_dmstate);
541
542out:
ab596ad8 543 dput(dentry);
710d62aa 544 return error;
545}
546
4d4be482
CH		 547long
548xfs_file_compat_ioctl(
549 struct file *filp,
550 unsigned cmd,
551 unsigned long p)
1da177e4 552{
496ad9aa 553 struct inode *inode = file_inode(filp);
4d4be482
CH		 554 struct xfs_inode *ip = XFS_I(inode);
555 struct xfs_mount *mp = ip->i_mount;
556 void __user *arg = (void __user *)p;
4d4be482
CH		 557 int error;
558
cca28fb8 559 trace_xfs_file_compat_ioctl(ip);
1da177e4
LT		 560
561 switch (cmd) {
e5d412f1 562 /* No size or alignment issues on any arch */
1da177e4 563 case XFS_IOC_DIOINFO:
1da177e4 564 case XFS_IOC_FSGEOMETRY:
1da177e4
LT		 565 case XFS_IOC_FSGETXATTR:
566 case XFS_IOC_FSSETXATTR:
567 case XFS_IOC_FSGETXATTRA:
568 case XFS_IOC_FSSETDM:
569 case XFS_IOC_GETBMAP:
570 case XFS_IOC_GETBMAPA:
571 case XFS_IOC_GETBMAPX:
1da177e4
LT		 572 case XFS_IOC_FSCOUNTS:
573 case XFS_IOC_SET_RESBLKS:
574 case XFS_IOC_GET_RESBLKS:
1da177e4 575 case XFS_IOC_FSGROWFSLOG:
1da177e4
LT		 576 case XFS_IOC_GOINGDOWN:
577 case XFS_IOC_ERROR_INJECTION:
578 case XFS_IOC_ERROR_CLEARALL:
e89c0413 579 case FS_IOC_GETFSMAP:
36fd6e86 580 case XFS_IOC_SCRUB_METADATA:
4d4be482 581 return xfs_file_ioctl(filp, cmd, p);
a9d25bde
NB		 582#if !defined(BROKEN_X86_ALIGNMENT) || defined(CONFIG_X86_X32)
583 /*
584 * These are handled fine if no alignment issues. To support x32
585 * which uses native 64-bit alignment we must emit these cases in
586 * addition to the ia-32 compat set below.
587 */
e5d412f1 588 case XFS_IOC_ALLOCSP:
589 case XFS_IOC_FREESP:
590 case XFS_IOC_RESVSP:
591 case XFS_IOC_UNRESVSP:
592 case XFS_IOC_ALLOCSP64:
593 case XFS_IOC_FREESP64:
594 case XFS_IOC_RESVSP64:
595 case XFS_IOC_UNRESVSP64:
596 case XFS_IOC_FSGEOMETRY_V1:
597 case XFS_IOC_FSGROWFSDATA:
598 case XFS_IOC_FSGROWFSRT:
44722352 599 case XFS_IOC_ZERO_RANGE:
a9d25bde
NB		 600#ifdef CONFIG_X86_X32
601 /*
602 * x32 special: this gets a different cmd number from the ia-32 compat
603 * case below; the associated data will match native 64-bit alignment.
604 */
605 case XFS_IOC_SWAPEXT:
606#endif
4d4be482 607 return xfs_file_ioctl(filp, cmd, p);
a9d25bde
NB		 608#endif
609#if defined(BROKEN_X86_ALIGNMENT)
526c420c
ES		 610 case XFS_IOC_ALLOCSP_32:
611 case XFS_IOC_FREESP_32:
612 case XFS_IOC_ALLOCSP64_32:
613 case XFS_IOC_FREESP64_32:
614 case XFS_IOC_RESVSP_32:
615 case XFS_IOC_UNRESVSP_32:
616 case XFS_IOC_RESVSP64_32:
8c1fdd0b
CH		 617 case XFS_IOC_UNRESVSP64_32:
618 case XFS_IOC_ZERO_RANGE_32: {
d5547f9f 619 struct xfs_flock64 bf;
620
621 if (xfs_compat_flock64_copyin(&bf, arg))
b474c7ae 622 return -EFAULT;
526c420c 623 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
8f3e2058 624 return xfs_ioc_space(filp, cmd, &bf);
d5547f9f 625 }
547e00c3 626 case XFS_IOC_FSGEOMETRY_V1_32:
d5547f9f 627 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
471d5910 628 case XFS_IOC_FSGROWFSDATA_32: {
629 struct xfs_growfs_data in;
630
631 if (xfs_compat_growfs_data_copyin(&in, arg))
b474c7ae 632 return -EFAULT;
d9457dc0
JK		 633 error = mnt_want_write_file(filp);
634 if (error)
635 return error;
471d5910 636 error = xfs_growfs_data(mp, &in);
d9457dc0 637 mnt_drop_write_file(filp);
2451337d 638 return error;
471d5910 639 }
640 case XFS_IOC_FSGROWFSRT_32: {
641 struct xfs_growfs_rt in;
642
643 if (xfs_compat_growfs_rt_copyin(&in, arg))
b474c7ae 644 return -EFAULT;
d9457dc0
JK		 645 error = mnt_want_write_file(filp);
646 if (error)
647 return error;
471d5910 648 error = xfs_growfs_rt(mp, &in);
d9457dc0 649 mnt_drop_write_file(filp);
2451337d 650 return error;
471d5910 651 }
1da177e4 652#endif
e5d412f1 653 /* long changes size, but xfs only copiese out 32 bits */
654 case XFS_IOC_GETXFLAGS_32:
655 case XFS_IOC_SETXFLAGS_32:
656 case XFS_IOC_GETVERSION_32:
657 cmd = _NATIVE_IOC(cmd, long);
4d4be482 658 return xfs_file_ioctl(filp, cmd, p);
3725867d 659 case XFS_IOC_SWAPEXT_32: {
e5d412f1 660 struct xfs_swapext sxp;
661 struct compat_xfs_swapext __user *sxu = arg;
662
663 /* Bulk copy in up to the sx_stat field, then copy bstat */
664 if (copy_from_user(&sxp, sxu,
665 offsetof(struct xfs_swapext, sx_stat)) ||
666 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
b474c7ae 667 return -EFAULT;
d9457dc0
JK		 668 error = mnt_want_write_file(filp);
669 if (error)
670 return error;
a133d952 671 error = xfs_ioc_swapext(&sxp);
d9457dc0 672 mnt_drop_write_file(filp);
2451337d 673 return error;
e5d412f1 674 }
faa63e95
MM		 675 case XFS_IOC_FSBULKSTAT_32:
676 case XFS_IOC_FSBULKSTAT_SINGLE_32:
677 case XFS_IOC_FSINUMBERS_32:
2ee4fa5c 678 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
1fa503df
MM		 679 case XFS_IOC_FD_TO_HANDLE_32:
680 case XFS_IOC_PATH_TO_HANDLE_32:
d5547f9f 681 case XFS_IOC_PATH_TO_FSHANDLE_32: {
682 struct xfs_fsop_handlereq hreq;
683
684 if (xfs_compat_handlereq_copyin(&hreq, arg))
b474c7ae 685 return -EFAULT;
1fa503df 686 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
d5547f9f 687 return xfs_find_handle(cmd, &hreq);
688 }
689 case XFS_IOC_OPEN_BY_HANDLE_32: {
690 struct xfs_fsop_handlereq hreq;
691
692 if (xfs_compat_handlereq_copyin(&hreq, arg))
b474c7ae 693 return -EFAULT;
ab596ad8 694 return xfs_open_by_handle(filp, &hreq);
d5547f9f 695 }
696 case XFS_IOC_READLINK_BY_HANDLE_32: {
697 struct xfs_fsop_handlereq hreq;
698
699 if (xfs_compat_handlereq_copyin(&hreq, arg))
b474c7ae 700 return -EFAULT;
ab596ad8 701 return xfs_readlink_by_handle(filp, &hreq);
d5547f9f 702 }
ebeecd2b 703 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
ab596ad8 704 return xfs_compat_attrlist_by_handle(filp, arg);
28750975 705 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
ab596ad8 706 return xfs_compat_attrmulti_by_handle(filp, arg);
710d62aa 707 case XFS_IOC_FSSETDM_BY_HANDLE_32:
ab596ad8 708 return xfs_compat_fssetdm_by_handle(filp, arg);
1da177e4 709 default:
b474c7ae 710 return -ENOIOCTLCMD;
1da177e4 711 }
1da177e4 712}
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