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[XFS] Fix xfs_bulkstat_one size checks & error handling
[deliverable/linux.git] / fs / xfs / linux-2.6 / xfs_ioctl32.c
CommitLineData
1da177e4 1/*
7b718769
NS		 2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS		 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
1da177e4
LT		 7 * published by the Free Software Foundation.
8 *
7b718769
NS		 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.
1da177e4 13 *
7b718769
NS		 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
1da177e4 17 */
1da177e4
LT		 18#include <linux/compat.h>
19#include <linux/init.h>
20#include <linux/ioctl.h>
1da177e4
LT		 21#include <linux/syscalls.h>
22#include <linux/types.h>
23#include <linux/fs.h>
24#include <asm/uaccess.h>
1da177e4 25#include "xfs.h"
1da177e4 26#include "xfs_fs.h"
faa63e95
MM		 27#include "xfs_bit.h"
28#include "xfs_log.h"
29#include "xfs_inum.h"
30#include "xfs_trans.h"
31#include "xfs_sb.h"
32#include "xfs_ag.h"
33#include "xfs_dir2.h"
34#include "xfs_dmapi.h"
35#include "xfs_mount.h"
36#include "xfs_bmap_btree.h"
37#include "xfs_attr_sf.h"
38#include "xfs_dir2_sf.h"
1da177e4 39#include "xfs_vnode.h"
faa63e95
MM		 40#include "xfs_dinode.h"
41#include "xfs_inode.h"
42#include "xfs_itable.h"
43#include "xfs_error.h"
1da177e4 44#include "xfs_dfrag.h"
739bfb2a 45#include "xfs_vnodeops.h"
d5547f9f 46#include "xfs_fsops.h"
471d5910 47#include "xfs_alloc.h"
48#include "xfs_rtalloc.h"
d5547f9f 49#include "xfs_ioctl.h"
a8272ce0 50#include "xfs_ioctl32.h"
1da177e4 51
526c420c
ES		 52#define _NATIVE_IOC(cmd, type) \
53 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
54
ffae263a 55#ifdef BROKEN_X86_ALIGNMENT
d5547f9f 56STATIC int
57xfs_compat_flock64_copyin(
58 xfs_flock64_t *bf,
59 compat_xfs_flock64_t __user *arg32)
526c420c 60{
d5547f9f 61 if (get_user(bf->l_type, &arg32->l_type) ||
62 get_user(bf->l_whence, &arg32->l_whence) ||
63 get_user(bf->l_start, &arg32->l_start) ||
64 get_user(bf->l_len, &arg32->l_len) ||
65 get_user(bf->l_sysid, &arg32->l_sysid) ||
66 get_user(bf->l_pid, &arg32->l_pid) ||
67 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
68 return -XFS_ERROR(EFAULT);
69 return 0;
526c420c
ES		 70}
71
d5547f9f 72STATIC int
73xfs_compat_ioc_fsgeometry_v1(
74 struct xfs_mount *mp,
75 compat_xfs_fsop_geom_v1_t __user *arg32)
547e00c3 76{
d5547f9f 77 xfs_fsop_geom_t fsgeo;
78 int error;
547e00c3 79
d5547f9f 80 error = xfs_fs_geometry(mp, &fsgeo, 3);
81 if (error)
82 return -error;
83 /* The 32-bit variant simply has some padding at the end */
84 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
85 return -XFS_ERROR(EFAULT);
86 return 0;
547e00c3
MM		 87}
88
471d5910 89STATIC int
90xfs_compat_growfs_data_copyin(
91 struct xfs_growfs_data *in,
92 compat_xfs_growfs_data_t __user *arg32)
93{
94 if (get_user(in->newblocks, &arg32->newblocks) ||
95 get_user(in->imaxpct, &arg32->imaxpct))
96 return -XFS_ERROR(EFAULT);
97 return 0;
98}
99
100STATIC int
101xfs_compat_growfs_rt_copyin(
102 struct xfs_growfs_rt *in,
103 compat_xfs_growfs_rt_t __user *arg32)
104{
105 if (get_user(in->newblocks, &arg32->newblocks) ||
106 get_user(in->extsize, &arg32->extsize))
107 return -XFS_ERROR(EFAULT);
108 return 0;
109}
110
d5547f9f 111STATIC int
112xfs_inumbers_fmt_compat(
113 void __user *ubuffer,
114 const xfs_inogrp_t *buffer,
115 long count,
116 long *written)
faa63e95 117{
d5547f9f 118 compat_xfs_inogrp_t __user *p32 = ubuffer;
119 long i;
faa63e95
MM		 120
121 for (i = 0; i < count; i++) {
122 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
123 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
124 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
d5547f9f 125 return -XFS_ERROR(EFAULT);
faa63e95
MM		 126 }
127 *written = count * sizeof(*p32);
128 return 0;
129}
130
1da177e4 131#else
faa63e95 132#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
faa63e95
MM		 133#endif
134
e94fc4a4 135STATIC int
136xfs_ioctl32_bstime_copyin(
137 xfs_bstime_t *bstime,
138 compat_xfs_bstime_t __user *bstime32)
139{
140 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
141
142 if (get_user(sec32, &bstime32->tv_sec) ||
143 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
144 return -XFS_ERROR(EFAULT);
145 bstime->tv_sec = sec32;
146 return 0;
147}
148
149/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
150STATIC int
151xfs_ioctl32_bstat_copyin(
152 xfs_bstat_t *bstat,
153 compat_xfs_bstat_t __user *bstat32)
154{
155 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
156 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
157 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
158 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
159 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
160 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
161 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
162 get_user(bstat->bs_size, &bstat32->bs_size) ||
163 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
164 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
165 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
166 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
167 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
168 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
169 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
170 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
171 get_user(bstat->bs_projid, &bstat32->bs_projid) ||
172 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
173 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
174 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
175 return -XFS_ERROR(EFAULT);
176 return 0;
177}
178
faa63e95
MM		 179/* XFS_IOC_FSBULKSTAT and friends */
180
d5547f9f 181STATIC int
182xfs_bstime_store_compat(
183 compat_xfs_bstime_t __user *p32,
184 const xfs_bstime_t *p)
faa63e95 185{
d5547f9f 186 __s32 sec32;
faa63e95
MM		 187
188 sec32 = p->tv_sec;
189 if (put_user(sec32, &p32->tv_sec) ||
190 put_user(p->tv_nsec, &p32->tv_nsec))
d5547f9f 191 return -XFS_ERROR(EFAULT);
faa63e95
MM		 192 return 0;
193}
194
65fbaf24 195/* Return 0 on success or positive error (to xfs_bulkstat()) */
d5547f9f 196STATIC int
197xfs_bulkstat_one_fmt_compat(
faa63e95 198 void __user *ubuffer,
65fbaf24 199 int ubsize,
200 int *ubused,
faa63e95
MM		 201 const xfs_bstat_t *buffer)
202{
d5547f9f 203 compat_xfs_bstat_t __user *p32 = ubuffer;
faa63e95 204
65fbaf24 205 if (ubsize < sizeof(*p32))
206 return XFS_ERROR(ENOMEM);
207
208 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
209 put_user(buffer->bs_mode, &p32->bs_mode) ||
210 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
211 put_user(buffer->bs_uid, &p32->bs_uid) ||
212 put_user(buffer->bs_gid, &p32->bs_gid) ||
213 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
214 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
215 put_user(buffer->bs_size, &p32->bs_size) ||
faa63e95
MM		 216 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
217 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
218 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
65fbaf24 219 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
220 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
221 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
222 put_user(buffer->bs_extents, &p32->bs_extents) ||
223 put_user(buffer->bs_gen, &p32->bs_gen) ||
224 put_user(buffer->bs_projid, &p32->bs_projid) ||
225 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
226 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
faa63e95 227 put_user(buffer->bs_aextents, &p32->bs_aextents))
65fbaf24 228 return XFS_ERROR(EFAULT);
229 if (ubused)
230 *ubused = sizeof(*p32);
231 return 0;
faa63e95
MM		 232}
233
2ee4fa5c 234STATIC int
235xfs_bulkstat_one_compat(
236 xfs_mount_t *mp, /* mount point for filesystem */
237 xfs_ino_t ino, /* inode number to get data for */
238 void __user *buffer, /* buffer to place output in */
239 int ubsize, /* size of buffer */
240 void *private_data, /* my private data */
241 xfs_daddr_t bno, /* starting bno of inode cluster */
242 int *ubused, /* bytes used by me */
243 void *dibuff, /* on-disk inode buffer */
244 int *stat) /* BULKSTAT_RV_... */
245{
246 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
247 xfs_bulkstat_one_fmt_compat, bno,
248 ubused, dibuff, stat);
249}
250
faa63e95
MM		 251/* copied from xfs_ioctl.c */
252STATIC int
2ee4fa5c 253xfs_compat_ioc_bulkstat(
254 xfs_mount_t *mp,
255 unsigned int cmd,
256 compat_xfs_fsop_bulkreq_t __user *p32)
1da177e4 257{
1da177e4 258 u32 addr;
faa63e95
MM		 259 xfs_fsop_bulkreq_t bulkreq;
260 int count; /* # of records returned */
261 xfs_ino_t inlast; /* last inode number */
262 int done;
263 int error;
264
265 /* done = 1 if there are more stats to get and if bulkstat */
266 /* should be called again (unused here, but used in dmapi) */
1da177e4 267
faa63e95 268 if (!capable(CAP_SYS_ADMIN))
d5547f9f 269 return -XFS_ERROR(EPERM);
faa63e95
MM		 270
271 if (XFS_FORCED_SHUTDOWN(mp))
272 return -XFS_ERROR(EIO);
273
274 if (get_user(addr, &p32->lastip))
d5547f9f 275 return -XFS_ERROR(EFAULT);
faa63e95
MM		 276 bulkreq.lastip = compat_ptr(addr);
277 if (get_user(bulkreq.icount, &p32->icount) ||
278 get_user(addr, &p32->ubuffer))
d5547f9f 279 return -XFS_ERROR(EFAULT);
faa63e95
MM		 280 bulkreq.ubuffer = compat_ptr(addr);
281 if (get_user(addr, &p32->ocount))
d5547f9f 282 return -XFS_ERROR(EFAULT);
faa63e95 283 bulkreq.ocount = compat_ptr(addr);
1da177e4 284
faa63e95
MM		 285 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
286 return -XFS_ERROR(EFAULT);
287
288 if ((count = bulkreq.icount) <= 0)
289 return -XFS_ERROR(EINVAL);
290
cd57e594
LM		 291 if (bulkreq.ubuffer == NULL)
292 return -XFS_ERROR(EINVAL);
293
2ee4fa5c 294 if (cmd == XFS_IOC_FSINUMBERS_32)
faa63e95
MM		 295 error = xfs_inumbers(mp, &inlast, &count,
296 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
297 else {
faa63e95 298 error = xfs_bulkstat(mp, &inlast, &count,
2ee4fa5c 299 xfs_bulkstat_one_compat, NULL,
faa63e95
MM		 300 sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
301 BULKSTAT_FG_QUICK, &done);
302 }
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;
1da177e4 316}
faa63e95 317
d5547f9f 318STATIC int
319xfs_compat_handlereq_copyin(
320 xfs_fsop_handlereq_t *hreq,
321 compat_xfs_fsop_handlereq_t __user *arg32)
1fa503df 322{
d5547f9f 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;
1fa503df
MM		 337}
338
d3870398 339STATIC long
e0edd596 340xfs_compat_ioctl(
d5547f9f 341 xfs_inode_t *ip,
342 struct file *filp,
343 int ioflags,
e0edd596 344 unsigned cmd,
d5547f9f 345 void __user *arg)
1da177e4 346{
d5547f9f 347 struct inode *inode = filp->f_path.dentry->d_inode;
348 xfs_mount_t *mp = ip->i_mount;
1da177e4 349 int error;
1da177e4 350
d5547f9f 351 xfs_itrace_entry(XFS_I(inode));
1da177e4
LT		 352 switch (cmd) {
353 case XFS_IOC_DIOINFO:
1da177e4 354 case XFS_IOC_FSGEOMETRY:
1da177e4
LT		 355 case XFS_IOC_FSGETXATTR:
356 case XFS_IOC_FSSETXATTR:
357 case XFS_IOC_FSGETXATTRA:
358 case XFS_IOC_FSSETDM:
359 case XFS_IOC_GETBMAP:
360 case XFS_IOC_GETBMAPA:
361 case XFS_IOC_GETBMAPX:
362/* not handled
1da177e4 363 case XFS_IOC_FSSETDM_BY_HANDLE:
1da177e4
LT		 364 case XFS_IOC_ATTRLIST_BY_HANDLE:
365 case XFS_IOC_ATTRMULTI_BY_HANDLE:
366*/
367 case XFS_IOC_FSCOUNTS:
368 case XFS_IOC_SET_RESBLKS:
369 case XFS_IOC_GET_RESBLKS:
370 case XFS_IOC_FSGROWFSDATA:
371 case XFS_IOC_FSGROWFSLOG:
372 case XFS_IOC_FSGROWFSRT:
373 case XFS_IOC_FREEZE:
374 case XFS_IOC_THAW:
375 case XFS_IOC_GOINGDOWN:
376 case XFS_IOC_ERROR_INJECTION:
377 case XFS_IOC_ERROR_CLEARALL:
378 break;
379
ffae263a 380 case XFS_IOC_GETXFLAGS_32:
381 case XFS_IOC_SETXFLAGS_32:
382 case XFS_IOC_GETVERSION_32:
bc58f9bb
ES		 383 cmd = _NATIVE_IOC(cmd, long);
384 break;
e94fc4a4 385 case XFS_IOC_SWAPEXT: {
386 struct xfs_swapext sxp;
387 struct compat_xfs_swapext __user *sxu = arg;
388
389 /* Bulk copy in up to the sx_stat field, then grab bstat */
390 if (copy_from_user(&sxp, sxu,
391 offsetof(xfs_swapext_t, sx_stat)) ||
392 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
393 return -XFS_ERROR(EFAULT);
394 error = xfs_swapext(&sxp);
395 return -error;
396 }
526c420c
ES		 397#ifdef BROKEN_X86_ALIGNMENT
398 /* xfs_flock_t has wrong u32 vs u64 alignment */
399 case XFS_IOC_ALLOCSP_32:
400 case XFS_IOC_FREESP_32:
401 case XFS_IOC_ALLOCSP64_32:
402 case XFS_IOC_FREESP64_32:
403 case XFS_IOC_RESVSP_32:
404 case XFS_IOC_UNRESVSP_32:
405 case XFS_IOC_RESVSP64_32:
d5547f9f 406 case XFS_IOC_UNRESVSP64_32: {
407 struct xfs_flock64 bf;
408
409 if (xfs_compat_flock64_copyin(&bf, arg))
410 return -XFS_ERROR(EFAULT);
526c420c 411 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
d5547f9f 412 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
413 }
547e00c3 414 case XFS_IOC_FSGEOMETRY_V1_32:
d5547f9f 415 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
471d5910 416 case XFS_IOC_FSGROWFSDATA_32: {
417 struct xfs_growfs_data in;
418
419 if (xfs_compat_growfs_data_copyin(&in, arg))
420 return -XFS_ERROR(EFAULT);
421 error = xfs_growfs_data(mp, &in);
422 return -error;
423 }
424 case XFS_IOC_FSGROWFSRT_32: {
425 struct xfs_growfs_rt in;
426
427 if (xfs_compat_growfs_rt_copyin(&in, arg))
428 return -XFS_ERROR(EFAULT);
429 error = xfs_growfs_rt(mp, &in);
430 return -error;
431 }
526c420c 432#else /* These are handled fine if no alignment issues */
1da177e4
LT		 433 case XFS_IOC_ALLOCSP:
434 case XFS_IOC_FREESP:
435 case XFS_IOC_RESVSP:
436 case XFS_IOC_UNRESVSP:
437 case XFS_IOC_ALLOCSP64:
438 case XFS_IOC_FREESP64:
439 case XFS_IOC_RESVSP64:
440 case XFS_IOC_UNRESVSP64:
547e00c3 441 case XFS_IOC_FSGEOMETRY_V1:
526c420c 442 break;
1da177e4 443#endif
faa63e95
MM		 444 case XFS_IOC_FSBULKSTAT_32:
445 case XFS_IOC_FSBULKSTAT_SINGLE_32:
446 case XFS_IOC_FSINUMBERS_32:
2ee4fa5c 447 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
1fa503df
MM		 448 case XFS_IOC_FD_TO_HANDLE_32:
449 case XFS_IOC_PATH_TO_HANDLE_32:
d5547f9f 450 case XFS_IOC_PATH_TO_FSHANDLE_32: {
451 struct xfs_fsop_handlereq hreq;
452
453 if (xfs_compat_handlereq_copyin(&hreq, arg))
454 return -XFS_ERROR(EFAULT);
1fa503df 455 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
d5547f9f 456 return xfs_find_handle(cmd, &hreq);
457 }
458 case XFS_IOC_OPEN_BY_HANDLE_32: {
459 struct xfs_fsop_handlereq hreq;
460
461 if (xfs_compat_handlereq_copyin(&hreq, arg))
462 return -XFS_ERROR(EFAULT);
463 return xfs_open_by_handle(mp, &hreq, filp, inode);
464 }
465 case XFS_IOC_READLINK_BY_HANDLE_32: {
466 struct xfs_fsop_handlereq hreq;
467
468 if (xfs_compat_handlereq_copyin(&hreq, arg))
469 return -XFS_ERROR(EFAULT);
470 return xfs_readlink_by_handle(mp, &hreq, inode);
471 }
1da177e4 472 default:
d5547f9f 473 return -XFS_ERROR(ENOIOCTLCMD);
1da177e4
LT		 474 }
475
d5547f9f 476 error = xfs_ioctl(ip, filp, ioflags, cmd, arg);
1da177e4
LT		 477 return error;
478}
479
d3870398 480long
a50cd269 481xfs_file_compat_ioctl(
d5547f9f 482 struct file *filp,
483 unsigned int cmd,
484 unsigned long p)
1da177e4 485{
d5547f9f 486 struct inode *inode = filp->f_path.dentry->d_inode;
487
488 return xfs_compat_ioctl(XFS_I(inode), filp, 0, cmd, (void __user *)p);
1da177e4
LT		 489}
490
d3870398 491long
a50cd269 492xfs_file_compat_invis_ioctl(
d5547f9f 493 struct file *filp,
494 unsigned int cmd,
495 unsigned long p)
1da177e4 496{
d5547f9f 497 struct inode *inode = filp->f_path.dentry->d_inode;
498
499 return xfs_compat_ioctl(XFS_I(inode), filp, IO_INVIS, cmd,
500 (void __user *)p);
1da177e4 501}
Linux kernel - Deliverables
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