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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_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
44STATIC int
45xfs_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
60STATIC int
61xfs_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
77STATIC int
78xfs_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
88STATIC int
89xfs_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
99STATIC int
100xfs_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
123STATIC int
124xfs_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 */
138STATIC int
139xfs_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
171STATIC int
172xfs_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()) */
186STATIC int
187xfs_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
226STATIC int
227xfs_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 */
241STATIC int
242xfs_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
312STATIC int
313xfs_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
333STATIC struct dentry *
334xfs_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
342STATIC int
343xfs_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
386out_kfree:
387 kmem_free(kbuf);
388out_dput:
389 dput(dentry);
390 return error;
391}
392
393STATIC int
394xfs_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
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 -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
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 |= XFS_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 -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 -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 -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 -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 -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 -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 -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 -ENOIOCTLCMD;
679 }
680}