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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_bit.h"
26#include "xfs_log.h"
27#include "xfs_inum.h"
28#include "xfs_trans.h"
29#include "xfs_sb.h"
30#include "xfs_ag.h"
31#include "xfs_mount.h"
32#include "xfs_bmap_btree.h"
33#include "xfs_vnode.h"
34#include "xfs_dinode.h"
35#include "xfs_inode.h"
36#include "xfs_itable.h"
37#include "xfs_error.h"
38#include "xfs_dfrag.h"
39#include "xfs_vnodeops.h"
40#include "xfs_fsops.h"
41#include "xfs_alloc.h"
42#include "xfs_rtalloc.h"
43#include "xfs_attr.h"
44#include "xfs_ioctl.h"
45#include "xfs_ioctl32.h"
46#include "xfs_trace.h"
47
48#define _NATIVE_IOC(cmd, type) \
49 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
50
51#ifdef BROKEN_X86_ALIGNMENT
52STATIC int
53xfs_compat_flock64_copyin(
54 xfs_flock64_t *bf,
55 compat_xfs_flock64_t __user *arg32)
56{
57 if (get_user(bf->l_type, &arg32->l_type) ||
58 get_user(bf->l_whence, &arg32->l_whence) ||
59 get_user(bf->l_start, &arg32->l_start) ||
60 get_user(bf->l_len, &arg32->l_len) ||
61 get_user(bf->l_sysid, &arg32->l_sysid) ||
62 get_user(bf->l_pid, &arg32->l_pid) ||
63 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
64 return -XFS_ERROR(EFAULT);
65 return 0;
66}
67
68STATIC int
69xfs_compat_ioc_fsgeometry_v1(
70 struct xfs_mount *mp,
71 compat_xfs_fsop_geom_v1_t __user *arg32)
72{
73 xfs_fsop_geom_t fsgeo;
74 int error;
75
76 error = xfs_fs_geometry(mp, &fsgeo, 3);
77 if (error)
78 return -error;
79 /* The 32-bit variant simply has some padding at the end */
80 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
81 return -XFS_ERROR(EFAULT);
82 return 0;
83}
84
85STATIC int
86xfs_compat_growfs_data_copyin(
87 struct xfs_growfs_data *in,
88 compat_xfs_growfs_data_t __user *arg32)
89{
90 if (get_user(in->newblocks, &arg32->newblocks) ||
91 get_user(in->imaxpct, &arg32->imaxpct))
92 return -XFS_ERROR(EFAULT);
93 return 0;
94}
95
96STATIC int
97xfs_compat_growfs_rt_copyin(
98 struct xfs_growfs_rt *in,
99 compat_xfs_growfs_rt_t __user *arg32)
100{
101 if (get_user(in->newblocks, &arg32->newblocks) ||
102 get_user(in->extsize, &arg32->extsize))
103 return -XFS_ERROR(EFAULT);
104 return 0;
105}
106
107STATIC int
108xfs_inumbers_fmt_compat(
109 void __user *ubuffer,
110 const xfs_inogrp_t *buffer,
111 long count,
112 long *written)
113{
114 compat_xfs_inogrp_t __user *p32 = ubuffer;
115 long i;
116
117 for (i = 0; i < count; i++) {
118 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
119 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
120 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
121 return -XFS_ERROR(EFAULT);
122 }
123 *written = count * sizeof(*p32);
124 return 0;
125}
126
127#else
128#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
129#endif /* BROKEN_X86_ALIGNMENT */
130
131STATIC int
132xfs_ioctl32_bstime_copyin(
133 xfs_bstime_t *bstime,
134 compat_xfs_bstime_t __user *bstime32)
135{
136 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
137
138 if (get_user(sec32, &bstime32->tv_sec) ||
139 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
140 return -XFS_ERROR(EFAULT);
141 bstime->tv_sec = sec32;
142 return 0;
143}
144
145/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
146STATIC int
147xfs_ioctl32_bstat_copyin(
148 xfs_bstat_t *bstat,
149 compat_xfs_bstat_t __user *bstat32)
150{
151 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
152 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
153 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
154 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
155 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
156 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
157 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
158 get_user(bstat->bs_size, &bstat32->bs_size) ||
159 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
160 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
161 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
162 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
163 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
164 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
165 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
166 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
167 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
168 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
169 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
170 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
171 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
172 return -XFS_ERROR(EFAULT);
173 return 0;
174}
175
176/* XFS_IOC_FSBULKSTAT and friends */
177
178STATIC int
179xfs_bstime_store_compat(
180 compat_xfs_bstime_t __user *p32,
181 const xfs_bstime_t *p)
182{
183 __s32 sec32;
184
185 sec32 = p->tv_sec;
186 if (put_user(sec32, &p32->tv_sec) ||
187 put_user(p->tv_nsec, &p32->tv_nsec))
188 return -XFS_ERROR(EFAULT);
189 return 0;
190}
191
192/* Return 0 on success or positive error (to xfs_bulkstat()) */
193STATIC int
194xfs_bulkstat_one_fmt_compat(
195 void __user *ubuffer,
196 int ubsize,
197 int *ubused,
198 const xfs_bstat_t *buffer)
199{
200 compat_xfs_bstat_t __user *p32 = ubuffer;
201
202 if (ubsize < sizeof(*p32))
203 return XFS_ERROR(ENOMEM);
204
205 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
206 put_user(buffer->bs_mode, &p32->bs_mode) ||
207 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
208 put_user(buffer->bs_uid, &p32->bs_uid) ||
209 put_user(buffer->bs_gid, &p32->bs_gid) ||
210 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
211 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
212 put_user(buffer->bs_size, &p32->bs_size) ||
213 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
214 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
215 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
216 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
217 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
218 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
219 put_user(buffer->bs_extents, &p32->bs_extents) ||
220 put_user(buffer->bs_gen, &p32->bs_gen) ||
221 put_user(buffer->bs_projid, &p32->bs_projid) ||
222 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
223 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
224 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
225 put_user(buffer->bs_aextents, &p32->bs_aextents))
226 return XFS_ERROR(EFAULT);
227 if (ubused)
228 *ubused = sizeof(*p32);
229 return 0;
230}
231
232STATIC int
233xfs_bulkstat_one_compat(
234 xfs_mount_t *mp, /* mount point for filesystem */
235 xfs_ino_t ino, /* inode number to get data for */
236 void __user *buffer, /* buffer to place output in */
237 int ubsize, /* size of buffer */
238 int *ubused, /* bytes used by me */
239 int *stat) /* BULKSTAT_RV_... */
240{
241 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
242 xfs_bulkstat_one_fmt_compat,
243 ubused, stat);
244}
245
246/* copied from xfs_ioctl.c */
247STATIC int
248xfs_compat_ioc_bulkstat(
249 xfs_mount_t *mp,
250 unsigned int cmd,
251 compat_xfs_fsop_bulkreq_t __user *p32)
252{
253 u32 addr;
254 xfs_fsop_bulkreq_t bulkreq;
255 int count; /* # of records returned */
256 xfs_ino_t inlast; /* last inode number */
257 int done;
258 int error;
259
260 /* done = 1 if there are more stats to get and if bulkstat */
261 /* should be called again (unused here, but used in dmapi) */
262
263 if (!capable(CAP_SYS_ADMIN))
264 return -XFS_ERROR(EPERM);
265
266 if (XFS_FORCED_SHUTDOWN(mp))
267 return -XFS_ERROR(EIO);
268
269 if (get_user(addr, &p32->lastip))
270 return -XFS_ERROR(EFAULT);
271 bulkreq.lastip = compat_ptr(addr);
272 if (get_user(bulkreq.icount, &p32->icount) ||
273 get_user(addr, &p32->ubuffer))
274 return -XFS_ERROR(EFAULT);
275 bulkreq.ubuffer = compat_ptr(addr);
276 if (get_user(addr, &p32->ocount))
277 return -XFS_ERROR(EFAULT);
278 bulkreq.ocount = compat_ptr(addr);
279
280 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
281 return -XFS_ERROR(EFAULT);
282
283 if ((count = bulkreq.icount) <= 0)
284 return -XFS_ERROR(EINVAL);
285
286 if (bulkreq.ubuffer == NULL)
287 return -XFS_ERROR(EINVAL);
288
289 if (cmd == XFS_IOC_FSINUMBERS_32) {
290 error = xfs_inumbers(mp, &inlast, &count,
291 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
292 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
293 int res;
294
295 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
296 sizeof(compat_xfs_bstat_t), 0, &res);
297 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
298 error = xfs_bulkstat(mp, &inlast, &count,
299 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
300 bulkreq.ubuffer, &done);
301 } else
302 error = XFS_ERROR(EINVAL);
303 if (error)
304 return -error;
305
306 if (bulkreq.ocount != NULL) {
307 if (copy_to_user(bulkreq.lastip, &inlast,
308 sizeof(xfs_ino_t)))
309 return -XFS_ERROR(EFAULT);
310
311 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
312 return -XFS_ERROR(EFAULT);
313 }
314
315 return 0;
316}
317
318STATIC int
319xfs_compat_handlereq_copyin(
320 xfs_fsop_handlereq_t *hreq,
321 compat_xfs_fsop_handlereq_t __user *arg32)
322{
323 compat_xfs_fsop_handlereq_t hreq32;
324
325 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
326 return -XFS_ERROR(EFAULT);
327
328 hreq->fd = hreq32.fd;
329 hreq->path = compat_ptr(hreq32.path);
330 hreq->oflags = hreq32.oflags;
331 hreq->ihandle = compat_ptr(hreq32.ihandle);
332 hreq->ihandlen = hreq32.ihandlen;
333 hreq->ohandle = compat_ptr(hreq32.ohandle);
334 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
335
336 return 0;
337}
338
339STATIC struct dentry *
340xfs_compat_handlereq_to_dentry(
341 struct file *parfilp,
342 compat_xfs_fsop_handlereq_t *hreq)
343{
344 return xfs_handle_to_dentry(parfilp,
345 compat_ptr(hreq->ihandle), hreq->ihandlen);
346}
347
348STATIC int
349xfs_compat_attrlist_by_handle(
350 struct file *parfilp,
351 void __user *arg)
352{
353 int error;
354 attrlist_cursor_kern_t *cursor;
355 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
356 struct dentry *dentry;
357 char *kbuf;
358
359 if (!capable(CAP_SYS_ADMIN))
360 return -XFS_ERROR(EPERM);
361 if (copy_from_user(&al_hreq, arg,
362 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
363 return -XFS_ERROR(EFAULT);
364 if (al_hreq.buflen > XATTR_LIST_MAX)
365 return -XFS_ERROR(EINVAL);
366
367 /*
368 * Reject flags, only allow namespaces.
369 */
370 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
371 return -XFS_ERROR(EINVAL);
372
373 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
374 if (IS_ERR(dentry))
375 return PTR_ERR(dentry);
376
377 error = -ENOMEM;
378 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
379 if (!kbuf)
380 goto out_dput;
381
382 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
383 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
384 al_hreq.flags, cursor);
385 if (error)
386 goto out_kfree;
387
388 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
389 error = -EFAULT;
390
391 out_kfree:
392 kfree(kbuf);
393 out_dput:
394 dput(dentry);
395 return error;
396}
397
398STATIC int
399xfs_compat_attrmulti_by_handle(
400 struct file *parfilp,
401 void __user *arg)
402{
403 int error;
404 compat_xfs_attr_multiop_t *ops;
405 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
406 struct dentry *dentry;
407 unsigned int i, size;
408 unsigned char *attr_name;
409
410 if (!capable(CAP_SYS_ADMIN))
411 return -XFS_ERROR(EPERM);
412 if (copy_from_user(&am_hreq, arg,
413 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
414 return -XFS_ERROR(EFAULT);
415
416 /* overflow check */
417 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
418 return -E2BIG;
419
420 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
421 if (IS_ERR(dentry))
422 return PTR_ERR(dentry);
423
424 error = E2BIG;
425 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
426 if (!size || size > 16 * PAGE_SIZE)
427 goto out_dput;
428
429 ops = memdup_user(compat_ptr(am_hreq.ops), size);
430 if (IS_ERR(ops)) {
431 error = PTR_ERR(ops);
432 goto out_dput;
433 }
434
435 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
436 if (!attr_name)
437 goto out_kfree_ops;
438
439 error = 0;
440 for (i = 0; i < am_hreq.opcount; i++) {
441 ops[i].am_error = strncpy_from_user((char *)attr_name,
442 compat_ptr(ops[i].am_attrname),
443 MAXNAMELEN);
444 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
445 error = -ERANGE;
446 if (ops[i].am_error < 0)
447 break;
448
449 switch (ops[i].am_opcode) {
450 case ATTR_OP_GET:
451 ops[i].am_error = xfs_attrmulti_attr_get(
452 dentry->d_inode, attr_name,
453 compat_ptr(ops[i].am_attrvalue),
454 &ops[i].am_length, ops[i].am_flags);
455 break;
456 case ATTR_OP_SET:
457 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
458 if (ops[i].am_error)
459 break;
460 ops[i].am_error = xfs_attrmulti_attr_set(
461 dentry->d_inode, attr_name,
462 compat_ptr(ops[i].am_attrvalue),
463 ops[i].am_length, ops[i].am_flags);
464 mnt_drop_write(parfilp->f_path.mnt);
465 break;
466 case ATTR_OP_REMOVE:
467 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
468 if (ops[i].am_error)
469 break;
470 ops[i].am_error = xfs_attrmulti_attr_remove(
471 dentry->d_inode, attr_name,
472 ops[i].am_flags);
473 mnt_drop_write(parfilp->f_path.mnt);
474 break;
475 default:
476 ops[i].am_error = EINVAL;
477 }
478 }
479
480 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
481 error = XFS_ERROR(EFAULT);
482
483 kfree(attr_name);
484 out_kfree_ops:
485 kfree(ops);
486 out_dput:
487 dput(dentry);
488 return -error;
489}
490
491STATIC int
492xfs_compat_fssetdm_by_handle(
493 struct file *parfilp,
494 void __user *arg)
495{
496 int error;
497 struct fsdmidata fsd;
498 compat_xfs_fsop_setdm_handlereq_t dmhreq;
499 struct dentry *dentry;
500
501 if (!capable(CAP_MKNOD))
502 return -XFS_ERROR(EPERM);
503 if (copy_from_user(&dmhreq, arg,
504 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
505 return -XFS_ERROR(EFAULT);
506
507 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
508 if (IS_ERR(dentry))
509 return PTR_ERR(dentry);
510
511 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
512 error = -XFS_ERROR(EPERM);
513 goto out;
514 }
515
516 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
517 error = -XFS_ERROR(EFAULT);
518 goto out;
519 }
520
521 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
522 fsd.fsd_dmstate);
523
524out:
525 dput(dentry);
526 return error;
527}
528
529long
530xfs_file_compat_ioctl(
531 struct file *filp,
532 unsigned cmd,
533 unsigned long p)
534{
535 struct inode *inode = filp->f_path.dentry->d_inode;
536 struct xfs_inode *ip = XFS_I(inode);
537 struct xfs_mount *mp = ip->i_mount;
538 void __user *arg = (void __user *)p;
539 int ioflags = 0;
540 int error;
541
542 if (filp->f_mode & FMODE_NOCMTIME)
543 ioflags |= IO_INVIS;
544
545 trace_xfs_file_compat_ioctl(ip);
546
547 switch (cmd) {
548 /* No size or alignment issues on any arch */
549 case XFS_IOC_DIOINFO:
550 case XFS_IOC_FSGEOMETRY:
551 case XFS_IOC_FSGETXATTR:
552 case XFS_IOC_FSSETXATTR:
553 case XFS_IOC_FSGETXATTRA:
554 case XFS_IOC_FSSETDM:
555 case XFS_IOC_GETBMAP:
556 case XFS_IOC_GETBMAPA:
557 case XFS_IOC_GETBMAPX:
558 case XFS_IOC_FSCOUNTS:
559 case XFS_IOC_SET_RESBLKS:
560 case XFS_IOC_GET_RESBLKS:
561 case XFS_IOC_FSGROWFSLOG:
562 case XFS_IOC_GOINGDOWN:
563 case XFS_IOC_ERROR_INJECTION:
564 case XFS_IOC_ERROR_CLEARALL:
565 return xfs_file_ioctl(filp, cmd, p);
566#ifndef BROKEN_X86_ALIGNMENT
567 /* These are handled fine if no alignment issues */
568 case XFS_IOC_ALLOCSP:
569 case XFS_IOC_FREESP:
570 case XFS_IOC_RESVSP:
571 case XFS_IOC_UNRESVSP:
572 case XFS_IOC_ALLOCSP64:
573 case XFS_IOC_FREESP64:
574 case XFS_IOC_RESVSP64:
575 case XFS_IOC_UNRESVSP64:
576 case XFS_IOC_FSGEOMETRY_V1:
577 case XFS_IOC_FSGROWFSDATA:
578 case XFS_IOC_FSGROWFSRT:
579 case XFS_IOC_ZERO_RANGE:
580 return xfs_file_ioctl(filp, cmd, p);
581#else
582 case XFS_IOC_ALLOCSP_32:
583 case XFS_IOC_FREESP_32:
584 case XFS_IOC_ALLOCSP64_32:
585 case XFS_IOC_FREESP64_32:
586 case XFS_IOC_RESVSP_32:
587 case XFS_IOC_UNRESVSP_32:
588 case XFS_IOC_RESVSP64_32:
589 case XFS_IOC_UNRESVSP64_32:
590 case XFS_IOC_ZERO_RANGE_32: {
591 struct xfs_flock64 bf;
592
593 if (xfs_compat_flock64_copyin(&bf, arg))
594 return -XFS_ERROR(EFAULT);
595 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
596 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
597 }
598 case XFS_IOC_FSGEOMETRY_V1_32:
599 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
600 case XFS_IOC_FSGROWFSDATA_32: {
601 struct xfs_growfs_data in;
602
603 if (xfs_compat_growfs_data_copyin(&in, arg))
604 return -XFS_ERROR(EFAULT);
605 error = xfs_growfs_data(mp, &in);
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 = xfs_growfs_rt(mp, &in);
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 -XFS_ERROR(EFAULT);
632 error = xfs_swapext(&sxp);
633 return -error;
634 }
635 case XFS_IOC_FSBULKSTAT_32:
636 case XFS_IOC_FSBULKSTAT_SINGLE_32:
637 case XFS_IOC_FSINUMBERS_32:
638 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
639 case XFS_IOC_FD_TO_HANDLE_32:
640 case XFS_IOC_PATH_TO_HANDLE_32:
641 case XFS_IOC_PATH_TO_FSHANDLE_32: {
642 struct xfs_fsop_handlereq hreq;
643
644 if (xfs_compat_handlereq_copyin(&hreq, arg))
645 return -XFS_ERROR(EFAULT);
646 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
647 return xfs_find_handle(cmd, &hreq);
648 }
649 case XFS_IOC_OPEN_BY_HANDLE_32: {
650 struct xfs_fsop_handlereq hreq;
651
652 if (xfs_compat_handlereq_copyin(&hreq, arg))
653 return -XFS_ERROR(EFAULT);
654 return xfs_open_by_handle(filp, &hreq);
655 }
656 case XFS_IOC_READLINK_BY_HANDLE_32: {
657 struct xfs_fsop_handlereq hreq;
658
659 if (xfs_compat_handlereq_copyin(&hreq, arg))
660 return -XFS_ERROR(EFAULT);
661 return xfs_readlink_by_handle(filp, &hreq);
662 }
663 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
664 return xfs_compat_attrlist_by_handle(filp, arg);
665 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
666 return xfs_compat_attrmulti_by_handle(filp, arg);
667 case XFS_IOC_FSSETDM_BY_HANDLE_32:
668 return xfs_compat_fssetdm_by_handle(filp, arg);
669 default:
670 return -XFS_ERROR(ENOIOCTLCMD);
671 }
672}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6#include <linux/mount.h>
7#include <linux/fsmap.h>
8#include "xfs.h"
9#include "xfs_fs.h"
10#include "xfs_shared.h"
11#include "xfs_format.h"
12#include "xfs_log_format.h"
13#include "xfs_trans_resv.h"
14#include "xfs_mount.h"
15#include "xfs_inode.h"
16#include "xfs_iwalk.h"
17#include "xfs_itable.h"
18#include "xfs_fsops.h"
19#include "xfs_rtalloc.h"
20#include "xfs_da_format.h"
21#include "xfs_da_btree.h"
22#include "xfs_attr.h"
23#include "xfs_ioctl.h"
24#include "xfs_ioctl32.h"
25#include "xfs_trace.h"
26#include "xfs_sb.h"
27#include "xfs_handle.h"
28
29#define _NATIVE_IOC(cmd, type) \
30 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
31
32#ifdef BROKEN_X86_ALIGNMENT
33STATIC int
34xfs_compat_ioc_fsgeometry_v1(
35 struct xfs_mount *mp,
36 compat_xfs_fsop_geom_v1_t __user *arg32)
37{
38 struct xfs_fsop_geom fsgeo;
39
40 xfs_fs_geometry(mp, &fsgeo, 3);
41 /* The 32-bit variant simply has some padding at the end */
42 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
43 return -EFAULT;
44 return 0;
45}
46
47STATIC int
48xfs_compat_growfs_data_copyin(
49 struct xfs_growfs_data *in,
50 compat_xfs_growfs_data_t __user *arg32)
51{
52 if (get_user(in->newblocks, &arg32->newblocks) ||
53 get_user(in->imaxpct, &arg32->imaxpct))
54 return -EFAULT;
55 return 0;
56}
57
58STATIC int
59xfs_compat_growfs_rt_copyin(
60 struct xfs_growfs_rt *in,
61 compat_xfs_growfs_rt_t __user *arg32)
62{
63 if (get_user(in->newblocks, &arg32->newblocks) ||
64 get_user(in->extsize, &arg32->extsize))
65 return -EFAULT;
66 return 0;
67}
68
69STATIC int
70xfs_fsinumbers_fmt_compat(
71 struct xfs_ibulk *breq,
72 const struct xfs_inumbers *ig)
73{
74 struct compat_xfs_inogrp __user *p32 = breq->ubuffer;
75 struct xfs_inogrp ig1;
76 struct xfs_inogrp *igrp = &ig1;
77
78 xfs_inumbers_to_inogrp(&ig1, ig);
79
80 if (put_user(igrp->xi_startino, &p32->xi_startino) ||
81 put_user(igrp->xi_alloccount, &p32->xi_alloccount) ||
82 put_user(igrp->xi_allocmask, &p32->xi_allocmask))
83 return -EFAULT;
84
85 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp));
86}
87
88#else
89#define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt
90#endif /* BROKEN_X86_ALIGNMENT */
91
92STATIC int
93xfs_ioctl32_bstime_copyin(
94 xfs_bstime_t *bstime,
95 compat_xfs_bstime_t __user *bstime32)
96{
97 old_time32_t sec32; /* tv_sec differs on 64 vs. 32 */
98
99 if (get_user(sec32, &bstime32->tv_sec) ||
100 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
101 return -EFAULT;
102 bstime->tv_sec = sec32;
103 return 0;
104}
105
106/*
107 * struct xfs_bstat has differing alignment on intel, & bstime_t sizes
108 * everywhere
109 */
110STATIC int
111xfs_ioctl32_bstat_copyin(
112 struct xfs_bstat *bstat,
113 struct compat_xfs_bstat __user *bstat32)
114{
115 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
116 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
117 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
118 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
119 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
120 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
121 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
122 get_user(bstat->bs_size, &bstat32->bs_size) ||
123 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
124 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
125 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
126 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
127 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
128 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
129 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
130 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
131 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
132 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
133 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
134 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
135 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
136 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
137 return -EFAULT;
138 return 0;
139}
140
141/* XFS_IOC_FSBULKSTAT and friends */
142
143STATIC int
144xfs_bstime_store_compat(
145 compat_xfs_bstime_t __user *p32,
146 const xfs_bstime_t *p)
147{
148 __s32 sec32;
149
150 sec32 = p->tv_sec;
151 if (put_user(sec32, &p32->tv_sec) ||
152 put_user(p->tv_nsec, &p32->tv_nsec))
153 return -EFAULT;
154 return 0;
155}
156
157/* Return 0 on success or positive error (to xfs_bulkstat()) */
158STATIC int
159xfs_fsbulkstat_one_fmt_compat(
160 struct xfs_ibulk *breq,
161 const struct xfs_bulkstat *bstat)
162{
163 struct compat_xfs_bstat __user *p32 = breq->ubuffer;
164 struct xfs_bstat bs1;
165 struct xfs_bstat *buffer = &bs1;
166
167 xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat);
168
169 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
170 put_user(buffer->bs_mode, &p32->bs_mode) ||
171 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
172 put_user(buffer->bs_uid, &p32->bs_uid) ||
173 put_user(buffer->bs_gid, &p32->bs_gid) ||
174 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
175 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
176 put_user(buffer->bs_size, &p32->bs_size) ||
177 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
178 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
179 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
180 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
181 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
182 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
183 put_user(buffer->bs_extents, &p32->bs_extents) ||
184 put_user(buffer->bs_gen, &p32->bs_gen) ||
185 put_user(buffer->bs_projid, &p32->bs_projid) ||
186 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
187 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
188 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
189 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
190 put_user(buffer->bs_aextents, &p32->bs_aextents))
191 return -EFAULT;
192
193 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat));
194}
195
196/* copied from xfs_ioctl.c */
197STATIC int
198xfs_compat_ioc_fsbulkstat(
199 struct file *file,
200 unsigned int cmd,
201 struct compat_xfs_fsop_bulkreq __user *p32)
202{
203 struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount;
204 u32 addr;
205 struct xfs_fsop_bulkreq bulkreq;
206 struct xfs_ibulk breq = {
207 .mp = mp,
208 .idmap = file_mnt_idmap(file),
209 .ocount = 0,
210 };
211 xfs_ino_t lastino;
212 int error;
213
214 /*
215 * Output structure handling functions. Depending on the command,
216 * either the xfs_bstat and xfs_inogrp structures are written out
217 * to userpace memory via bulkreq.ubuffer. Normally the compat
218 * functions and structure size are the correct ones to use ...
219 */
220 inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat;
221 bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat;
222
223#ifdef CONFIG_X86_X32_ABI
224 if (in_x32_syscall()) {
225 /*
226 * ... but on x32 the input xfs_fsop_bulkreq has pointers
227 * which must be handled in the "compat" (32-bit) way, while
228 * the xfs_bstat and xfs_inogrp structures follow native 64-
229 * bit layout convention. So adjust accordingly, otherwise
230 * the data written out in compat layout will not match what
231 * x32 userspace expects.
232 */
233 inumbers_func = xfs_fsinumbers_fmt;
234 bs_one_func = xfs_fsbulkstat_one_fmt;
235 }
236#endif
237
238 /* done = 1 if there are more stats to get and if bulkstat */
239 /* should be called again (unused here, but used in dmapi) */
240
241 if (!capable(CAP_SYS_ADMIN))
242 return -EPERM;
243
244 if (xfs_is_shutdown(mp))
245 return -EIO;
246
247 if (get_user(addr, &p32->lastip))
248 return -EFAULT;
249 bulkreq.lastip = compat_ptr(addr);
250 if (get_user(bulkreq.icount, &p32->icount) ||
251 get_user(addr, &p32->ubuffer))
252 return -EFAULT;
253 bulkreq.ubuffer = compat_ptr(addr);
254 if (get_user(addr, &p32->ocount))
255 return -EFAULT;
256 bulkreq.ocount = compat_ptr(addr);
257
258 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
259 return -EFAULT;
260
261 if (bulkreq.icount <= 0)
262 return -EINVAL;
263
264 if (bulkreq.ubuffer == NULL)
265 return -EINVAL;
266
267 breq.ubuffer = bulkreq.ubuffer;
268 breq.icount = bulkreq.icount;
269
270 /*
271 * FSBULKSTAT_SINGLE expects that *lastip contains the inode number
272 * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect
273 * that *lastip contains either zero or the number of the last inode to
274 * be examined by the previous call and return results starting with
275 * the next inode after that. The new bulk request back end functions
276 * take the inode to start with, so we have to compute the startino
277 * parameter from lastino to maintain correct function. lastino == 0
278 * is a special case because it has traditionally meant "first inode
279 * in filesystem".
280 */
281 if (cmd == XFS_IOC_FSINUMBERS_32) {
282 breq.startino = lastino ? lastino + 1 : 0;
283 error = xfs_inumbers(&breq, inumbers_func);
284 lastino = breq.startino - 1;
285 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
286 breq.startino = lastino;
287 breq.icount = 1;
288 error = xfs_bulkstat_one(&breq, bs_one_func);
289 lastino = breq.startino;
290 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
291 breq.startino = lastino ? lastino + 1 : 0;
292 error = xfs_bulkstat(&breq, bs_one_func);
293 lastino = breq.startino - 1;
294 } else {
295 error = -EINVAL;
296 }
297 if (error)
298 return error;
299
300 if (bulkreq.lastip != NULL &&
301 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
302 return -EFAULT;
303
304 if (bulkreq.ocount != NULL &&
305 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
306 return -EFAULT;
307
308 return 0;
309}
310
311STATIC int
312xfs_compat_handlereq_copyin(
313 xfs_fsop_handlereq_t *hreq,
314 compat_xfs_fsop_handlereq_t __user *arg32)
315{
316 compat_xfs_fsop_handlereq_t hreq32;
317
318 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
319 return -EFAULT;
320
321 hreq->fd = hreq32.fd;
322 hreq->path = compat_ptr(hreq32.path);
323 hreq->oflags = hreq32.oflags;
324 hreq->ihandle = compat_ptr(hreq32.ihandle);
325 hreq->ihandlen = hreq32.ihandlen;
326 hreq->ohandle = compat_ptr(hreq32.ohandle);
327 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
328
329 return 0;
330}
331
332STATIC struct dentry *
333xfs_compat_handlereq_to_dentry(
334 struct file *parfilp,
335 compat_xfs_fsop_handlereq_t *hreq)
336{
337 return xfs_handle_to_dentry(parfilp,
338 compat_ptr(hreq->ihandle), hreq->ihandlen);
339}
340
341STATIC int
342xfs_compat_attrlist_by_handle(
343 struct file *parfilp,
344 compat_xfs_fsop_attrlist_handlereq_t __user *p)
345{
346 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
347 struct dentry *dentry;
348 int error;
349
350 if (!capable(CAP_SYS_ADMIN))
351 return -EPERM;
352 if (copy_from_user(&al_hreq, p, sizeof(al_hreq)))
353 return -EFAULT;
354
355 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
356 if (IS_ERR(dentry))
357 return PTR_ERR(dentry);
358
359 error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)),
360 compat_ptr(al_hreq.buffer), al_hreq.buflen,
361 al_hreq.flags, &p->pos);
362 dput(dentry);
363 return error;
364}
365
366STATIC int
367xfs_compat_attrmulti_by_handle(
368 struct file *parfilp,
369 void __user *arg)
370{
371 int error;
372 compat_xfs_attr_multiop_t *ops;
373 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
374 struct dentry *dentry;
375 unsigned int i, size;
376
377 if (!capable(CAP_SYS_ADMIN))
378 return -EPERM;
379 if (copy_from_user(&am_hreq, arg,
380 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
381 return -EFAULT;
382
383 /* overflow check */
384 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
385 return -E2BIG;
386
387 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
388 if (IS_ERR(dentry))
389 return PTR_ERR(dentry);
390
391 error = -E2BIG;
392 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
393 if (!size || size > 16 * PAGE_SIZE)
394 goto out_dput;
395
396 ops = memdup_user(compat_ptr(am_hreq.ops), size);
397 if (IS_ERR(ops)) {
398 error = PTR_ERR(ops);
399 goto out_dput;
400 }
401
402 error = 0;
403 for (i = 0; i < am_hreq.opcount; i++) {
404 ops[i].am_error = xfs_ioc_attrmulti_one(parfilp,
405 d_inode(dentry), ops[i].am_opcode,
406 compat_ptr(ops[i].am_attrname),
407 compat_ptr(ops[i].am_attrvalue),
408 &ops[i].am_length, ops[i].am_flags);
409 }
410
411 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
412 error = -EFAULT;
413
414 kfree(ops);
415 out_dput:
416 dput(dentry);
417 return error;
418}
419
420long
421xfs_file_compat_ioctl(
422 struct file *filp,
423 unsigned cmd,
424 unsigned long p)
425{
426 struct inode *inode = file_inode(filp);
427 struct xfs_inode *ip = XFS_I(inode);
428 void __user *arg = compat_ptr(p);
429 int error;
430
431 trace_xfs_file_compat_ioctl(ip);
432
433 switch (cmd) {
434#if defined(BROKEN_X86_ALIGNMENT)
435 case XFS_IOC_FSGEOMETRY_V1_32:
436 return xfs_compat_ioc_fsgeometry_v1(ip->i_mount, arg);
437 case XFS_IOC_FSGROWFSDATA_32: {
438 struct xfs_growfs_data in;
439
440 if (xfs_compat_growfs_data_copyin(&in, arg))
441 return -EFAULT;
442 error = mnt_want_write_file(filp);
443 if (error)
444 return error;
445 error = xfs_growfs_data(ip->i_mount, &in);
446 mnt_drop_write_file(filp);
447 return error;
448 }
449 case XFS_IOC_FSGROWFSRT_32: {
450 struct xfs_growfs_rt in;
451
452 if (xfs_compat_growfs_rt_copyin(&in, arg))
453 return -EFAULT;
454 error = mnt_want_write_file(filp);
455 if (error)
456 return error;
457 error = xfs_growfs_rt(ip->i_mount, &in);
458 mnt_drop_write_file(filp);
459 return error;
460 }
461#endif
462 /* long changes size, but xfs only copiese out 32 bits */
463 case XFS_IOC_GETVERSION_32:
464 cmd = _NATIVE_IOC(cmd, long);
465 return xfs_file_ioctl(filp, cmd, p);
466 case XFS_IOC_SWAPEXT_32: {
467 struct xfs_swapext sxp;
468 struct compat_xfs_swapext __user *sxu = arg;
469
470 /* Bulk copy in up to the sx_stat field, then copy bstat */
471 if (copy_from_user(&sxp, sxu,
472 offsetof(struct xfs_swapext, sx_stat)) ||
473 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
474 return -EFAULT;
475 error = mnt_want_write_file(filp);
476 if (error)
477 return error;
478 error = xfs_ioc_swapext(&sxp);
479 mnt_drop_write_file(filp);
480 return error;
481 }
482 case XFS_IOC_FSBULKSTAT_32:
483 case XFS_IOC_FSBULKSTAT_SINGLE_32:
484 case XFS_IOC_FSINUMBERS_32:
485 return xfs_compat_ioc_fsbulkstat(filp, cmd, arg);
486 case XFS_IOC_FD_TO_HANDLE_32:
487 case XFS_IOC_PATH_TO_HANDLE_32:
488 case XFS_IOC_PATH_TO_FSHANDLE_32: {
489 struct xfs_fsop_handlereq hreq;
490
491 if (xfs_compat_handlereq_copyin(&hreq, arg))
492 return -EFAULT;
493 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
494 return xfs_find_handle(cmd, &hreq);
495 }
496 case XFS_IOC_OPEN_BY_HANDLE_32: {
497 struct xfs_fsop_handlereq hreq;
498
499 if (xfs_compat_handlereq_copyin(&hreq, arg))
500 return -EFAULT;
501 return xfs_open_by_handle(filp, &hreq);
502 }
503 case XFS_IOC_READLINK_BY_HANDLE_32: {
504 struct xfs_fsop_handlereq hreq;
505
506 if (xfs_compat_handlereq_copyin(&hreq, arg))
507 return -EFAULT;
508 return xfs_readlink_by_handle(filp, &hreq);
509 }
510 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
511 return xfs_compat_attrlist_by_handle(filp, arg);
512 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
513 return xfs_compat_attrmulti_by_handle(filp, arg);
514 default:
515 /* try the native version */
516 return xfs_file_ioctl(filp, cmd, (unsigned long)arg);
517 }
518}