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cfg80211: Fix array-bounds warning in fragment copy
[linux/fpc-iii.git] / fs / xfs / xfs_ioctl32.c
blob7c49938c5aed417cf0a83b08526d32fea1190fad
1 /*
2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18 #include <linux/compat.h>
19 #include <linux/ioctl.h>
20 #include <linux/mount.h>
21 #include <linux/slab.h>
22 #include <linux/uaccess.h>
23 #include "xfs.h"
24 #include "xfs_fs.h"
25 #include "xfs_format.h"
26 #include "xfs_log_format.h"
27 #include "xfs_trans_resv.h"
28 #include "xfs_mount.h"
29 #include "xfs_inode.h"
30 #include "xfs_itable.h"
31 #include "xfs_error.h"
32 #include "xfs_fsops.h"
33 #include "xfs_alloc.h"
34 #include "xfs_rtalloc.h"
35 #include "xfs_attr.h"
36 #include "xfs_ioctl.h"
37 #include "xfs_ioctl32.h"
38 #include "xfs_trace.h"
39
40 #define _NATIVE_IOC(cmd, type) \
41 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
42
43 #ifdef BROKEN_X86_ALIGNMENT
44 STATIC int
45 xfs_compat_flock64_copyin(
46 xfs_flock64_t *bf,
47 compat_xfs_flock64_t __user *arg32)
48 {
49 if (get_user(bf->l_type, &arg32->l_type) ||
50 get_user(bf->l_whence, &arg32->l_whence) ||
51 get_user(bf->l_start, &arg32->l_start) ||
52 get_user(bf->l_len, &arg32->l_len) ||
53 get_user(bf->l_sysid, &arg32->l_sysid) ||
54 get_user(bf->l_pid, &arg32->l_pid) ||
55 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
56 return -EFAULT;
57 return 0;
58 }
59
60 STATIC int
61 xfs_compat_ioc_fsgeometry_v1(
62 struct xfs_mount *mp,
63 compat_xfs_fsop_geom_v1_t __user *arg32)
64 {
65 xfs_fsop_geom_t fsgeo;
66 int error;
67
68 error = xfs_fs_geometry(mp, &fsgeo, 3);
69 if (error)
70 return error;
71 /* The 32-bit variant simply has some padding at the end */
72 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
73 return -EFAULT;
74 return 0;
75 }
76
77 STATIC int
78 xfs_compat_growfs_data_copyin(
79 struct xfs_growfs_data *in,
80 compat_xfs_growfs_data_t __user *arg32)
81 {
82 if (get_user(in->newblocks, &arg32->newblocks) ||
83 get_user(in->imaxpct, &arg32->imaxpct))
84 return -EFAULT;
85 return 0;
86 }
87
88 STATIC int
89 xfs_compat_growfs_rt_copyin(
90 struct xfs_growfs_rt *in,
91 compat_xfs_growfs_rt_t __user *arg32)
92 {
93 if (get_user(in->newblocks, &arg32->newblocks) ||
94 get_user(in->extsize, &arg32->extsize))
95 return -EFAULT;
96 return 0;
97 }
98
99 STATIC int
100 xfs_inumbers_fmt_compat(
101 void __user *ubuffer,
102 const struct xfs_inogrp *buffer,
103 long count,
104 long *written)
105 {
106 compat_xfs_inogrp_t __user *p32 = ubuffer;
107 long i;
108
109 for (i = 0; i < count; i++) {
110 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
111 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
112 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
113 return -EFAULT;
114 }
115 *written = count * sizeof(*p32);
116 return 0;
117 }
118
119 #else
120 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
121 #endif /* BROKEN_X86_ALIGNMENT */
122
123 STATIC int
124 xfs_ioctl32_bstime_copyin(
125 xfs_bstime_t *bstime,
126 compat_xfs_bstime_t __user *bstime32)
127 {
128 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
129
130 if (get_user(sec32, &bstime32->tv_sec) ||
131 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
132 return -EFAULT;
133 bstime->tv_sec = sec32;
134 return 0;
135 }
136
137 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
138 STATIC int
139 xfs_ioctl32_bstat_copyin(
140 xfs_bstat_t *bstat,
141 compat_xfs_bstat_t __user *bstat32)
142 {
143 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
144 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
145 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
146 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
147 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
148 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
149 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
150 get_user(bstat->bs_size, &bstat32->bs_size) ||
151 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
152 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
153 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
154 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
155 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
156 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
157 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
158 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
159 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
160 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
161 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
162 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
163 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
164 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
165 return -EFAULT;
166 return 0;
167 }
168
169 /* XFS_IOC_FSBULKSTAT and friends */
170
171 STATIC int
172 xfs_bstime_store_compat(
173 compat_xfs_bstime_t __user *p32,
174 const xfs_bstime_t *p)
175 {
176 __s32 sec32;
177
178 sec32 = p->tv_sec;
179 if (put_user(sec32, &p32->tv_sec) ||
180 put_user(p->tv_nsec, &p32->tv_nsec))
181 return -EFAULT;
182 return 0;
183 }
184
185 /* Return 0 on success or positive error (to xfs_bulkstat()) */
186 STATIC int
187 xfs_bulkstat_one_fmt_compat(
188 void __user *ubuffer,
189 int ubsize,
190 int *ubused,
191 const xfs_bstat_t *buffer)
192 {
193 compat_xfs_bstat_t __user *p32 = ubuffer;
194
195 if (ubsize < sizeof(*p32))
196 return -ENOMEM;
197
198 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
199 put_user(buffer->bs_mode, &p32->bs_mode) ||
200 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
201 put_user(buffer->bs_uid, &p32->bs_uid) ||
202 put_user(buffer->bs_gid, &p32->bs_gid) ||
203 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
204 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
205 put_user(buffer->bs_size, &p32->bs_size) ||
206 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
207 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
208 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
209 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
210 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
211 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
212 put_user(buffer->bs_extents, &p32->bs_extents) ||
213 put_user(buffer->bs_gen, &p32->bs_gen) ||
214 put_user(buffer->bs_projid, &p32->bs_projid) ||
215 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
216 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
217 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
218 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
219 put_user(buffer->bs_aextents, &p32->bs_aextents))
220 return -EFAULT;
221 if (ubused)
222 *ubused = sizeof(*p32);
223 return 0;
224 }
225
226 STATIC int
227 xfs_bulkstat_one_compat(
228 xfs_mount_t *mp, /* mount point for filesystem */
229 xfs_ino_t ino, /* inode number to get data for */
230 void __user *buffer, /* buffer to place output in */
231 int ubsize, /* size of buffer */
232 int *ubused, /* bytes used by me */
233 int *stat) /* BULKSTAT_RV_... */
234 {
235 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
236 xfs_bulkstat_one_fmt_compat,
237 ubused, stat);
238 }
239
240 /* copied from xfs_ioctl.c */
241 STATIC int
242 xfs_compat_ioc_bulkstat(
243 xfs_mount_t *mp,
244 unsigned int cmd,
245 compat_xfs_fsop_bulkreq_t __user *p32)
246 {
247 u32 addr;
248 xfs_fsop_bulkreq_t bulkreq;
249 int count; /* # of records returned */
250 xfs_ino_t inlast; /* last inode number */
251 int done;
252 int error;
253
254 /* done = 1 if there are more stats to get and if bulkstat */
255 /* should be called again (unused here, but used in dmapi) */
256
257 if (!capable(CAP_SYS_ADMIN))
258 return -EPERM;
259
260 if (XFS_FORCED_SHUTDOWN(mp))
261 return -EIO;
262
263 if (get_user(addr, &p32->lastip))
264 return -EFAULT;
265 bulkreq.lastip = compat_ptr(addr);
266 if (get_user(bulkreq.icount, &p32->icount) ||
267 get_user(addr, &p32->ubuffer))
268 return -EFAULT;
269 bulkreq.ubuffer = compat_ptr(addr);
270 if (get_user(addr, &p32->ocount))
271 return -EFAULT;
272 bulkreq.ocount = compat_ptr(addr);
273
274 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
275 return -EFAULT;
276
277 if ((count = bulkreq.icount) <= 0)
278 return -EINVAL;
279
280 if (bulkreq.ubuffer == NULL)
281 return -EINVAL;
282
283 if (cmd == XFS_IOC_FSINUMBERS_32) {
284 error = xfs_inumbers(mp, &inlast, &count,
285 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
286 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
287 int res;
288
289 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
290 sizeof(compat_xfs_bstat_t), NULL, &res);
291 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
292 error = xfs_bulkstat(mp, &inlast, &count,
293 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
294 bulkreq.ubuffer, &done);
295 } else
296 error = -EINVAL;
297 if (error)
298 return error;
299
300 if (bulkreq.ocount != NULL) {
301 if (copy_to_user(bulkreq.lastip, &inlast,
302 sizeof(xfs_ino_t)))
303 return -EFAULT;
304
305 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
306 return -EFAULT;
307 }
308
309 return 0;
310 }
311
312 STATIC int
313 xfs_compat_handlereq_copyin(
314 xfs_fsop_handlereq_t *hreq,
315 compat_xfs_fsop_handlereq_t __user *arg32)
316 {
317 compat_xfs_fsop_handlereq_t hreq32;
318
319 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
320 return -EFAULT;
321
322 hreq->fd = hreq32.fd;
323 hreq->path = compat_ptr(hreq32.path);
324 hreq->oflags = hreq32.oflags;
325 hreq->ihandle = compat_ptr(hreq32.ihandle);
326 hreq->ihandlen = hreq32.ihandlen;
327 hreq->ohandle = compat_ptr(hreq32.ohandle);
328 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
329
330 return 0;
331 }
332
333 STATIC struct dentry *
334 xfs_compat_handlereq_to_dentry(
335 struct file *parfilp,
336 compat_xfs_fsop_handlereq_t *hreq)
337 {
338 return xfs_handle_to_dentry(parfilp,
339 compat_ptr(hreq->ihandle), hreq->ihandlen);
340 }
341
342 STATIC int
343 xfs_compat_attrlist_by_handle(
344 struct file *parfilp,
345 void __user *arg)
346 {
347 int error;
348 attrlist_cursor_kern_t *cursor;
349 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
350 struct dentry *dentry;
351 char *kbuf;
352
353 if (!capable(CAP_SYS_ADMIN))
354 return -EPERM;
355 if (copy_from_user(&al_hreq, arg,
356 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
357 return -EFAULT;
358 if (al_hreq.buflen < sizeof(struct attrlist) ||
359 al_hreq.buflen > XFS_XATTR_LIST_MAX)
360 return -EINVAL;
361
362 /*
363 * Reject flags, only allow namespaces.
364 */
365 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
366 return -EINVAL;
367
368 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
369 if (IS_ERR(dentry))
370 return PTR_ERR(dentry);
371
372 error = -ENOMEM;
373 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
374 if (!kbuf)
375 goto out_dput;
376
377 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
378 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
379 al_hreq.flags, cursor);
380 if (error)
381 goto out_kfree;
382
383 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
384 error = -EFAULT;
385
386 out_kfree:
387 kmem_free(kbuf);
388 out_dput:
389 dput(dentry);
390 return error;
391 }
392
393 STATIC int
394 xfs_compat_attrmulti_by_handle(
395 struct file *parfilp,
396 void __user *arg)
397 {
398 int error;
399 compat_xfs_attr_multiop_t *ops;
400 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
401 struct dentry *dentry;
402 unsigned int i, size;
403 unsigned char *attr_name;
404
405 if (!capable(CAP_SYS_ADMIN))
406 return -EPERM;
407 if (copy_from_user(&am_hreq, arg,
408 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
409 return -EFAULT;
410
411 /* overflow check */
412 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
413 return -E2BIG;
414
415 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
416 if (IS_ERR(dentry))
417 return PTR_ERR(dentry);
418
419 error = -E2BIG;
420 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
421 if (!size || size > 16 * PAGE_SIZE)
422 goto out_dput;
423
424 ops = memdup_user(compat_ptr(am_hreq.ops), size);
425 if (IS_ERR(ops)) {
426 error = PTR_ERR(ops);
427 goto out_dput;
428 }
429
430 error = -ENOMEM;
431 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
432 if (!attr_name)
433 goto out_kfree_ops;
434
435 error = 0;
436 for (i = 0; i < am_hreq.opcount; i++) {
437 ops[i].am_error = strncpy_from_user((char *)attr_name,
438 compat_ptr(ops[i].am_attrname),
439 MAXNAMELEN);
440 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
441 error = -ERANGE;
442 if (ops[i].am_error < 0)
443 break;
444
445 switch (ops[i].am_opcode) {
446 case ATTR_OP_GET:
447 ops[i].am_error = xfs_attrmulti_attr_get(
448 d_inode(dentry), attr_name,
449 compat_ptr(ops[i].am_attrvalue),
450 &ops[i].am_length, ops[i].am_flags);
451 break;
452 case ATTR_OP_SET:
453 ops[i].am_error = mnt_want_write_file(parfilp);
454 if (ops[i].am_error)
455 break;
456 ops[i].am_error = xfs_attrmulti_attr_set(
457 d_inode(dentry), attr_name,
458 compat_ptr(ops[i].am_attrvalue),
459 ops[i].am_length, ops[i].am_flags);
460 mnt_drop_write_file(parfilp);
461 break;
462 case ATTR_OP_REMOVE:
463 ops[i].am_error = mnt_want_write_file(parfilp);
464 if (ops[i].am_error)
465 break;
466 ops[i].am_error = xfs_attrmulti_attr_remove(
467 d_inode(dentry), attr_name,
468 ops[i].am_flags);
469 mnt_drop_write_file(parfilp);
470 break;
471 default:
472 ops[i].am_error = -EINVAL;
473 }
474 }
475
476 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
477 error = -EFAULT;
478
479 kfree(attr_name);
480 out_kfree_ops:
481 kfree(ops);
482 out_dput:
483 dput(dentry);
484 return error;
485 }
486
487 STATIC int
488 xfs_compat_fssetdm_by_handle(
489 struct file *parfilp,
490 void __user *arg)
491 {
492 int error;
493 struct fsdmidata fsd;
494 compat_xfs_fsop_setdm_handlereq_t dmhreq;
495 struct dentry *dentry;
496
497 if (!capable(CAP_MKNOD))
498 return -EPERM;
499 if (copy_from_user(&dmhreq, arg,
500 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
501 return -EFAULT;
502
503 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
504 if (IS_ERR(dentry))
505 return PTR_ERR(dentry);
506
507 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
508 error = -EPERM;
509 goto out;
510 }
511
512 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
513 error = -EFAULT;
514 goto out;
515 }
516
517 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
518 fsd.fsd_dmstate);
519
520 out:
521 dput(dentry);
522 return error;
523 }
524
525 long
526 xfs_file_compat_ioctl(
527 struct file *filp,
528 unsigned cmd,
529 unsigned long p)
530 {
531 struct inode *inode = file_inode(filp);
532 struct xfs_inode *ip = XFS_I(inode);
533 struct xfs_mount *mp = ip->i_mount;
534 void __user *arg = (void __user *)p;
535 int error;
536
537 trace_xfs_file_compat_ioctl(ip);
538
539 switch (cmd) {
540 /* No size or alignment issues on any arch */
541 case XFS_IOC_DIOINFO:
542 case XFS_IOC_FSGEOMETRY:
543 case XFS_IOC_FSGETXATTR:
544 case XFS_IOC_FSSETXATTR:
545 case XFS_IOC_FSGETXATTRA:
546 case XFS_IOC_FSSETDM:
547 case XFS_IOC_GETBMAP:
548 case XFS_IOC_GETBMAPA:
549 case XFS_IOC_GETBMAPX:
550 case XFS_IOC_FSCOUNTS:
551 case XFS_IOC_SET_RESBLKS:
552 case XFS_IOC_GET_RESBLKS:
553 case XFS_IOC_FSGROWFSLOG:
554 case XFS_IOC_GOINGDOWN:
555 case XFS_IOC_ERROR_INJECTION:
556 case XFS_IOC_ERROR_CLEARALL:
557 return xfs_file_ioctl(filp, cmd, p);
558 #ifndef BROKEN_X86_ALIGNMENT
559 /* These are handled fine if no alignment issues */
560 case XFS_IOC_ALLOCSP:
561 case XFS_IOC_FREESP:
562 case XFS_IOC_RESVSP:
563 case XFS_IOC_UNRESVSP:
564 case XFS_IOC_ALLOCSP64:
565 case XFS_IOC_FREESP64:
566 case XFS_IOC_RESVSP64:
567 case XFS_IOC_UNRESVSP64:
568 case XFS_IOC_FSGEOMETRY_V1:
569 case XFS_IOC_FSGROWFSDATA:
570 case XFS_IOC_FSGROWFSRT:
571 case XFS_IOC_ZERO_RANGE:
572 return xfs_file_ioctl(filp, cmd, p);
573 #else
574 case XFS_IOC_ALLOCSP_32:
575 case XFS_IOC_FREESP_32:
576 case XFS_IOC_ALLOCSP64_32:
577 case XFS_IOC_FREESP64_32:
578 case XFS_IOC_RESVSP_32:
579 case XFS_IOC_UNRESVSP_32:
580 case XFS_IOC_RESVSP64_32:
581 case XFS_IOC_UNRESVSP64_32:
582 case XFS_IOC_ZERO_RANGE_32: {
583 struct xfs_flock64 bf;
584
585 if (xfs_compat_flock64_copyin(&bf, arg))
586 return -EFAULT;
587 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
588 return xfs_ioc_space(filp, cmd, &bf);
589 }
590 case XFS_IOC_FSGEOMETRY_V1_32:
591 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
592 case XFS_IOC_FSGROWFSDATA_32: {
593 struct xfs_growfs_data in;
594
595 if (xfs_compat_growfs_data_copyin(&in, arg))
596 return -EFAULT;
597 error = mnt_want_write_file(filp);
598 if (error)
599 return error;
600 error = xfs_growfs_data(mp, &in);
601 mnt_drop_write_file(filp);
602 return error;
603 }
604 case XFS_IOC_FSGROWFSRT_32: {
605 struct xfs_growfs_rt in;
606
607 if (xfs_compat_growfs_rt_copyin(&in, arg))
608 return -EFAULT;
609 error = mnt_want_write_file(filp);
610 if (error)
611 return error;
612 error = xfs_growfs_rt(mp, &in);
613 mnt_drop_write_file(filp);
614 return error;
615 }
616 #endif
617 /* long changes size, but xfs only copiese out 32 bits */
618 case XFS_IOC_GETXFLAGS_32:
619 case XFS_IOC_SETXFLAGS_32:
620 case XFS_IOC_GETVERSION_32:
621 cmd = _NATIVE_IOC(cmd, long);
622 return xfs_file_ioctl(filp, cmd, p);
623 case XFS_IOC_SWAPEXT_32: {
624 struct xfs_swapext sxp;
625 struct compat_xfs_swapext __user *sxu = arg;
626
627 /* Bulk copy in up to the sx_stat field, then copy bstat */
628 if (copy_from_user(&sxp, sxu,
629 offsetof(struct xfs_swapext, sx_stat)) ||
630 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
631 return -EFAULT;
632 error = mnt_want_write_file(filp);
633 if (error)
634 return error;
635 error = xfs_ioc_swapext(&sxp);
636 mnt_drop_write_file(filp);
637 return error;
638 }
639 case XFS_IOC_FSBULKSTAT_32:
640 case XFS_IOC_FSBULKSTAT_SINGLE_32:
641 case XFS_IOC_FSINUMBERS_32:
642 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
643 case XFS_IOC_FD_TO_HANDLE_32:
644 case XFS_IOC_PATH_TO_HANDLE_32:
645 case XFS_IOC_PATH_TO_FSHANDLE_32: {
646 struct xfs_fsop_handlereq hreq;
647
648 if (xfs_compat_handlereq_copyin(&hreq, arg))
649 return -EFAULT;
650 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
651 return xfs_find_handle(cmd, &hreq);
652 }
653 case XFS_IOC_OPEN_BY_HANDLE_32: {
654 struct xfs_fsop_handlereq hreq;
655
656 if (xfs_compat_handlereq_copyin(&hreq, arg))
657 return -EFAULT;
658 return xfs_open_by_handle(filp, &hreq);
659 }
660 case XFS_IOC_READLINK_BY_HANDLE_32: {
661 struct xfs_fsop_handlereq hreq;
662
663 if (xfs_compat_handlereq_copyin(&hreq, arg))
664 return -EFAULT;
665 return xfs_readlink_by_handle(filp, &hreq);
666 }
667 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
668 return xfs_compat_attrlist_by_handle(filp, arg);
669 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
670 return xfs_compat_attrmulti_by_handle(filp, arg);
671 case XFS_IOC_FSSETDM_BY_HANDLE_32:
672 return xfs_compat_fssetdm_by_handle(filp, arg);
673 default:
674 return -ENOIOCTLCMD;
675 }
676 }
Linux with added FPC-III support