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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include <linux/compat.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/ioctl.h>
Christoph Hellwig62e194e2009-01-19 02:03:03 +010020#include <linux/mount.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090021#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include "xfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include "xfs_fs.h"
Michal Marekfaa63e92007-07-11 11:10:19 +100025#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_dir2.h"
32#include "xfs_dmapi.h"
33#include "xfs_mount.h"
34#include "xfs_bmap_btree.h"
35#include "xfs_attr_sf.h"
36#include "xfs_dir2_sf.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include "xfs_vnode.h"
Michal Marekfaa63e92007-07-11 11:10:19 +100038#include "xfs_dinode.h"
39#include "xfs_inode.h"
40#include "xfs_itable.h"
41#include "xfs_error.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include "xfs_dfrag.h"
Christoph Hellwig739bfb22007-08-29 10:58:01 +100043#include "xfs_vnodeops.h"
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060044#include "xfs_fsops.h"
sandeen@sandeen.net471d5912008-11-25 21:20:10 -060045#include "xfs_alloc.h"
46#include "xfs_rtalloc.h"
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -060047#include "xfs_attr.h"
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060048#include "xfs_ioctl.h"
David Chinnera8272ce2007-11-23 16:28:09 +110049#include "xfs_ioctl32.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000050#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
Eric Sandeen526c4202005-09-05 08:25:06 +100052#define _NATIVE_IOC(cmd, type) \
53 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
54
sandeen@sandeen.netffae2632008-11-25 21:20:07 -060055#ifdef BROKEN_X86_ALIGNMENT
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060056STATIC int
57xfs_compat_flock64_copyin(
58 xfs_flock64_t *bf,
59 compat_xfs_flock64_t __user *arg32)
Eric Sandeen526c4202005-09-05 08:25:06 +100060{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060061 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;
Eric Sandeen526c4202005-09-05 08:25:06 +100070}
71
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060072STATIC int
73xfs_compat_ioc_fsgeometry_v1(
74 struct xfs_mount *mp,
75 compat_xfs_fsop_geom_v1_t __user *arg32)
Michal Marek547e00c2007-07-11 11:09:57 +100076{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060077 xfs_fsop_geom_t fsgeo;
78 int error;
Michal Marek547e00c2007-07-11 11:09:57 +100079
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060080 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;
Michal Marek547e00c2007-07-11 11:09:57 +100087}
88
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060089STATIC int
sandeen@sandeen.net471d5912008-11-25 21:20:10 -060090xfs_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
111STATIC int
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600112xfs_inumbers_fmt_compat(
113 void __user *ubuffer,
114 const xfs_inogrp_t *buffer,
115 long count,
116 long *written)
Michal Marekfaa63e92007-07-11 11:10:19 +1000117{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600118 compat_xfs_inogrp_t __user *p32 = ubuffer;
119 long i;
Michal Marekfaa63e92007-07-11 11:10:19 +1000120
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))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600125 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000126 }
127 *written = count * sizeof(*p32);
128 return 0;
129}
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131#else
Michal Marekfaa63e92007-07-11 11:10:19 +1000132#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600133#endif /* BROKEN_X86_ALIGNMENT */
Michal Marekfaa63e92007-07-11 11:10:19 +1000134
sandeen@sandeen.nete94fc4a2008-11-25 21:20:09 -0600135STATIC 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
Michal Marekfaa63e92007-07-11 11:10:19 +1000179/* XFS_IOC_FSBULKSTAT and friends */
180
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600181STATIC int
182xfs_bstime_store_compat(
183 compat_xfs_bstime_t __user *p32,
184 const xfs_bstime_t *p)
Michal Marekfaa63e92007-07-11 11:10:19 +1000185{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600186 __s32 sec32;
Michal Marekfaa63e92007-07-11 11:10:19 +1000187
188 sec32 = p->tv_sec;
189 if (put_user(sec32, &p32->tv_sec) ||
190 put_user(p->tv_nsec, &p32->tv_nsec))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600191 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000192 return 0;
193}
194
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600195/* Return 0 on success or positive error (to xfs_bulkstat()) */
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600196STATIC int
197xfs_bulkstat_one_fmt_compat(
Michal Marekfaa63e92007-07-11 11:10:19 +1000198 void __user *ubuffer,
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600199 int ubsize,
200 int *ubused,
Michal Marekfaa63e92007-07-11 11:10:19 +1000201 const xfs_bstat_t *buffer)
202{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600203 compat_xfs_bstat_t __user *p32 = ubuffer;
Michal Marekfaa63e92007-07-11 11:10:19 +1000204
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600205 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) ||
Michal Marekfaa63e92007-07-11 11:10:19 +1000216 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) ||
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600219 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) ||
Michal Marekfaa63e92007-07-11 11:10:19 +1000227 put_user(buffer->bs_aextents, &p32->bs_aextents))
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600228 return XFS_ERROR(EFAULT);
229 if (ubused)
230 *ubused = sizeof(*p32);
231 return 0;
Michal Marekfaa63e92007-07-11 11:10:19 +1000232}
233
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600234STATIC 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 */
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600240 xfs_daddr_t bno, /* starting bno of inode cluster */
241 int *ubused, /* bytes used by me */
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600242 int *stat) /* BULKSTAT_RV_... */
243{
244 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
245 xfs_bulkstat_one_fmt_compat, bno,
Christoph Hellwig7dce11d2010-06-23 18:11:11 +1000246 ubused, stat);
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600247}
248
Michal Marekfaa63e92007-07-11 11:10:19 +1000249/* copied from xfs_ioctl.c */
250STATIC int
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600251xfs_compat_ioc_bulkstat(
252 xfs_mount_t *mp,
253 unsigned int cmd,
254 compat_xfs_fsop_bulkreq_t __user *p32)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 u32 addr;
Michal Marekfaa63e92007-07-11 11:10:19 +1000257 xfs_fsop_bulkreq_t bulkreq;
258 int count; /* # of records returned */
259 xfs_ino_t inlast; /* last inode number */
260 int done;
261 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
Michal Marekfaa63e92007-07-11 11:10:19 +1000263 /* done = 1 if there are more stats to get and if bulkstat */
264 /* should be called again (unused here, but used in dmapi) */
265
266 if (!capable(CAP_SYS_ADMIN))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600267 return -XFS_ERROR(EPERM);
Michal Marekfaa63e92007-07-11 11:10:19 +1000268
269 if (XFS_FORCED_SHUTDOWN(mp))
270 return -XFS_ERROR(EIO);
271
272 if (get_user(addr, &p32->lastip))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600273 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000274 bulkreq.lastip = compat_ptr(addr);
275 if (get_user(bulkreq.icount, &p32->icount) ||
276 get_user(addr, &p32->ubuffer))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600277 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000278 bulkreq.ubuffer = compat_ptr(addr);
279 if (get_user(addr, &p32->ocount))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600280 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000281 bulkreq.ocount = compat_ptr(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
Michal Marekfaa63e92007-07-11 11:10:19 +1000283 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
284 return -XFS_ERROR(EFAULT);
285
286 if ((count = bulkreq.icount) <= 0)
287 return -XFS_ERROR(EINVAL);
288
Lachlan McIlroycd57e592007-11-23 16:30:32 +1100289 if (bulkreq.ubuffer == NULL)
290 return -XFS_ERROR(EINVAL);
291
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600292 if (cmd == XFS_IOC_FSINUMBERS_32) {
Michal Marekfaa63e92007-07-11 11:10:19 +1000293 error = xfs_inumbers(mp, &inlast, &count,
294 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600295 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
296 int res;
297
298 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
Christoph Hellwig7dce11d2010-06-23 18:11:11 +1000299 sizeof(compat_xfs_bstat_t), 0, NULL, &res);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600300 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
Michal Marekfaa63e92007-07-11 11:10:19 +1000301 error = xfs_bulkstat(mp, &inlast, &count,
Christoph Hellwig7dce11d2010-06-23 18:11:11 +1000302 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
303 bulkreq.ubuffer, &done);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600304 } else
305 error = XFS_ERROR(EINVAL);
Michal Marekfaa63e92007-07-11 11:10:19 +1000306 if (error)
307 return -error;
308
309 if (bulkreq.ocount != NULL) {
310 if (copy_to_user(bulkreq.lastip, &inlast,
311 sizeof(xfs_ino_t)))
312 return -XFS_ERROR(EFAULT);
313
314 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
315 return -XFS_ERROR(EFAULT);
316 }
317
318 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319}
Michal Marekfaa63e92007-07-11 11:10:19 +1000320
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600321STATIC int
322xfs_compat_handlereq_copyin(
323 xfs_fsop_handlereq_t *hreq,
324 compat_xfs_fsop_handlereq_t __user *arg32)
Michal Marek1fa503d2007-07-11 11:10:09 +1000325{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600326 compat_xfs_fsop_handlereq_t hreq32;
Michal Marek1fa503d2007-07-11 11:10:09 +1000327
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600328 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
329 return -XFS_ERROR(EFAULT);
Michal Marek1fa503d2007-07-11 11:10:09 +1000330
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600331 hreq->fd = hreq32.fd;
332 hreq->path = compat_ptr(hreq32.path);
333 hreq->oflags = hreq32.oflags;
334 hreq->ihandle = compat_ptr(hreq32.ihandle);
335 hreq->ihandlen = hreq32.ihandlen;
336 hreq->ohandle = compat_ptr(hreq32.ohandle);
337 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
338
339 return 0;
Michal Marek1fa503d2007-07-11 11:10:09 +1000340}
341
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100342STATIC struct dentry *
343xfs_compat_handlereq_to_dentry(
344 struct file *parfilp,
345 compat_xfs_fsop_handlereq_t *hreq)
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600346{
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100347 return xfs_handle_to_dentry(parfilp,
348 compat_ptr(hreq->ihandle), hreq->ihandlen);
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600349}
350
351STATIC int
352xfs_compat_attrlist_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100353 struct file *parfilp,
354 void __user *arg)
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600355{
356 int error;
357 attrlist_cursor_kern_t *cursor;
358 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100359 struct dentry *dentry;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600360 char *kbuf;
361
362 if (!capable(CAP_SYS_ADMIN))
363 return -XFS_ERROR(EPERM);
364 if (copy_from_user(&al_hreq, arg,
365 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
366 return -XFS_ERROR(EFAULT);
367 if (al_hreq.buflen > XATTR_LIST_MAX)
368 return -XFS_ERROR(EINVAL);
369
370 /*
371 * Reject flags, only allow namespaces.
372 */
373 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
374 return -XFS_ERROR(EINVAL);
375
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100376 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
377 if (IS_ERR(dentry))
378 return PTR_ERR(dentry);
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600379
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100380 error = -ENOMEM;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600381 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
382 if (!kbuf)
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100383 goto out_dput;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600384
385 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100386 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600387 al_hreq.flags, cursor);
388 if (error)
389 goto out_kfree;
390
391 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
392 error = -EFAULT;
393
394 out_kfree:
395 kfree(kbuf);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100396 out_dput:
397 dput(dentry);
398 return error;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600399}
400
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600401STATIC int
402xfs_compat_attrmulti_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100403 struct file *parfilp,
404 void __user *arg)
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600405{
406 int error;
407 compat_xfs_attr_multiop_t *ops;
408 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100409 struct dentry *dentry;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600410 unsigned int i, size;
Dave Chinnera9273ca2010-01-20 10:47:48 +1100411 unsigned char *attr_name;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600412
413 if (!capable(CAP_SYS_ADMIN))
414 return -XFS_ERROR(EPERM);
415 if (copy_from_user(&am_hreq, arg,
416 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
417 return -XFS_ERROR(EFAULT);
418
Zhitong Wangfda168c2010-03-23 09:51:22 +1100419 /* overflow check */
420 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
421 return -E2BIG;
422
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100423 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
424 if (IS_ERR(dentry))
425 return PTR_ERR(dentry);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600426
427 error = E2BIG;
428 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
429 if (!size || size > 16 * PAGE_SIZE)
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100430 goto out_dput;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600431
Li Zefan0e639bd2009-04-08 15:08:04 +0800432 ops = memdup_user(compat_ptr(am_hreq.ops), size);
433 if (IS_ERR(ops)) {
434 error = PTR_ERR(ops);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100435 goto out_dput;
Li Zefan0e639bd2009-04-08 15:08:04 +0800436 }
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600437
438 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
439 if (!attr_name)
440 goto out_kfree_ops;
441
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600442 error = 0;
443 for (i = 0; i < am_hreq.opcount; i++) {
Dave Chinnera9273ca2010-01-20 10:47:48 +1100444 ops[i].am_error = strncpy_from_user((char *)attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600445 compat_ptr(ops[i].am_attrname),
446 MAXNAMELEN);
447 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
448 error = -ERANGE;
449 if (ops[i].am_error < 0)
450 break;
451
452 switch (ops[i].am_opcode) {
453 case ATTR_OP_GET:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100454 ops[i].am_error = xfs_attrmulti_attr_get(
455 dentry->d_inode, attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600456 compat_ptr(ops[i].am_attrvalue),
457 &ops[i].am_length, ops[i].am_flags);
458 break;
459 case ATTR_OP_SET:
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100460 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
461 if (ops[i].am_error)
462 break;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100463 ops[i].am_error = xfs_attrmulti_attr_set(
464 dentry->d_inode, attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600465 compat_ptr(ops[i].am_attrvalue),
466 ops[i].am_length, ops[i].am_flags);
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100467 mnt_drop_write(parfilp->f_path.mnt);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600468 break;
469 case ATTR_OP_REMOVE:
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100470 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
471 if (ops[i].am_error)
472 break;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100473 ops[i].am_error = xfs_attrmulti_attr_remove(
474 dentry->d_inode, attr_name,
475 ops[i].am_flags);
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100476 mnt_drop_write(parfilp->f_path.mnt);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600477 break;
478 default:
479 ops[i].am_error = EINVAL;
480 }
481 }
482
483 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
484 error = XFS_ERROR(EFAULT);
485
486 kfree(attr_name);
487 out_kfree_ops:
488 kfree(ops);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100489 out_dput:
490 dput(dentry);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600491 return -error;
492}
493
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600494STATIC int
495xfs_compat_fssetdm_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100496 struct file *parfilp,
497 void __user *arg)
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600498{
499 int error;
500 struct fsdmidata fsd;
501 compat_xfs_fsop_setdm_handlereq_t dmhreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100502 struct dentry *dentry;
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600503
504 if (!capable(CAP_MKNOD))
505 return -XFS_ERROR(EPERM);
506 if (copy_from_user(&dmhreq, arg,
507 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
508 return -XFS_ERROR(EFAULT);
509
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100510 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
511 if (IS_ERR(dentry))
512 return PTR_ERR(dentry);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600513
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100514 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600515 error = -XFS_ERROR(EPERM);
516 goto out;
517 }
518
519 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
520 error = -XFS_ERROR(EFAULT);
521 goto out;
522 }
523
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100524 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600525 fsd.fsd_dmstate);
526
527out:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100528 dput(dentry);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600529 return error;
530}
531
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500532long
533xfs_file_compat_ioctl(
534 struct file *filp,
535 unsigned cmd,
536 unsigned long p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537{
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500538 struct inode *inode = filp->f_path.dentry->d_inode;
539 struct xfs_inode *ip = XFS_I(inode);
540 struct xfs_mount *mp = ip->i_mount;
541 void __user *arg = (void __user *)p;
542 int ioflags = 0;
543 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500545 if (filp->f_mode & FMODE_NOCMTIME)
546 ioflags |= IO_INVIS;
547
548 xfs_itrace_entry(ip);
549
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 switch (cmd) {
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600551 /* No size or alignment issues on any arch */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 case XFS_IOC_DIOINFO:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 case XFS_IOC_FSGEOMETRY:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 case XFS_IOC_FSGETXATTR:
555 case XFS_IOC_FSSETXATTR:
556 case XFS_IOC_FSGETXATTRA:
557 case XFS_IOC_FSSETDM:
558 case XFS_IOC_GETBMAP:
559 case XFS_IOC_GETBMAPA:
560 case XFS_IOC_GETBMAPX:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 case XFS_IOC_FSCOUNTS:
562 case XFS_IOC_SET_RESBLKS:
563 case XFS_IOC_GET_RESBLKS:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 case XFS_IOC_FSGROWFSLOG:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 case XFS_IOC_GOINGDOWN:
566 case XFS_IOC_ERROR_INJECTION:
567 case XFS_IOC_ERROR_CLEARALL:
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500568 return xfs_file_ioctl(filp, cmd, p);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600569#ifndef BROKEN_X86_ALIGNMENT
570 /* These are handled fine if no alignment issues */
571 case XFS_IOC_ALLOCSP:
572 case XFS_IOC_FREESP:
573 case XFS_IOC_RESVSP:
574 case XFS_IOC_UNRESVSP:
575 case XFS_IOC_ALLOCSP64:
576 case XFS_IOC_FREESP64:
577 case XFS_IOC_RESVSP64:
578 case XFS_IOC_UNRESVSP64:
579 case XFS_IOC_FSGEOMETRY_V1:
580 case XFS_IOC_FSGROWFSDATA:
581 case XFS_IOC_FSGROWFSRT:
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500582 return xfs_file_ioctl(filp, cmd, p);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600583#else
Eric Sandeen526c4202005-09-05 08:25:06 +1000584 case XFS_IOC_ALLOCSP_32:
585 case XFS_IOC_FREESP_32:
586 case XFS_IOC_ALLOCSP64_32:
587 case XFS_IOC_FREESP64_32:
588 case XFS_IOC_RESVSP_32:
589 case XFS_IOC_UNRESVSP_32:
590 case XFS_IOC_RESVSP64_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600591 case XFS_IOC_UNRESVSP64_32: {
592 struct xfs_flock64 bf;
593
594 if (xfs_compat_flock64_copyin(&bf, arg))
595 return -XFS_ERROR(EFAULT);
Eric Sandeen526c4202005-09-05 08:25:06 +1000596 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600597 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
598 }
Michal Marek547e00c2007-07-11 11:09:57 +1000599 case XFS_IOC_FSGEOMETRY_V1_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600600 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600601 case XFS_IOC_FSGROWFSDATA_32: {
602 struct xfs_growfs_data in;
603
604 if (xfs_compat_growfs_data_copyin(&in, arg))
605 return -XFS_ERROR(EFAULT);
606 error = xfs_growfs_data(mp, &in);
607 return -error;
608 }
609 case XFS_IOC_FSGROWFSRT_32: {
610 struct xfs_growfs_rt in;
611
612 if (xfs_compat_growfs_rt_copyin(&in, arg))
613 return -XFS_ERROR(EFAULT);
614 error = xfs_growfs_rt(mp, &in);
615 return -error;
616 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617#endif
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600618 /* long changes size, but xfs only copiese out 32 bits */
619 case XFS_IOC_GETXFLAGS_32:
620 case XFS_IOC_SETXFLAGS_32:
621 case XFS_IOC_GETVERSION_32:
622 cmd = _NATIVE_IOC(cmd, long);
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500623 return xfs_file_ioctl(filp, cmd, p);
Christoph Hellwig37258672009-09-01 14:03:08 -0400624 case XFS_IOC_SWAPEXT_32: {
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600625 struct xfs_swapext sxp;
626 struct compat_xfs_swapext __user *sxu = arg;
627
628 /* Bulk copy in up to the sx_stat field, then copy bstat */
629 if (copy_from_user(&sxp, sxu,
630 offsetof(struct xfs_swapext, sx_stat)) ||
631 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
632 return -XFS_ERROR(EFAULT);
633 error = xfs_swapext(&sxp);
634 return -error;
635 }
Michal Marekfaa63e92007-07-11 11:10:19 +1000636 case XFS_IOC_FSBULKSTAT_32:
637 case XFS_IOC_FSBULKSTAT_SINGLE_32:
638 case XFS_IOC_FSINUMBERS_32:
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600639 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
Michal Marek1fa503d2007-07-11 11:10:09 +1000640 case XFS_IOC_FD_TO_HANDLE_32:
641 case XFS_IOC_PATH_TO_HANDLE_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600642 case XFS_IOC_PATH_TO_FSHANDLE_32: {
643 struct xfs_fsop_handlereq hreq;
644
645 if (xfs_compat_handlereq_copyin(&hreq, arg))
646 return -XFS_ERROR(EFAULT);
Michal Marek1fa503d2007-07-11 11:10:09 +1000647 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600648 return xfs_find_handle(cmd, &hreq);
649 }
650 case XFS_IOC_OPEN_BY_HANDLE_32: {
651 struct xfs_fsop_handlereq hreq;
652
653 if (xfs_compat_handlereq_copyin(&hreq, arg))
654 return -XFS_ERROR(EFAULT);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100655 return xfs_open_by_handle(filp, &hreq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600656 }
657 case XFS_IOC_READLINK_BY_HANDLE_32: {
658 struct xfs_fsop_handlereq hreq;
659
660 if (xfs_compat_handlereq_copyin(&hreq, arg))
661 return -XFS_ERROR(EFAULT);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100662 return xfs_readlink_by_handle(filp, &hreq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600663 }
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600664 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100665 return xfs_compat_attrlist_by_handle(filp, arg);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600666 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100667 return xfs_compat_attrmulti_by_handle(filp, arg);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600668 case XFS_IOC_FSSETDM_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100669 return xfs_compat_fssetdm_by_handle(filp, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 default:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600671 return -XFS_ERROR(ENOIOCTLCMD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673}