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