blob: 9287135e9bfcedf7ab0f563d5c14bfe9d309e8e5 [file] [log] [blame]
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 */
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
Michal Marekfaa63e92007-07-11 11:10:19 +1000251/* copied from xfs_ioctl.c */
252STATIC int
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600253xfs_compat_ioc_bulkstat(
254 xfs_mount_t *mp,
255 unsigned int cmd,
256 compat_xfs_fsop_bulkreq_t __user *p32)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 u32 addr;
Michal Marekfaa63e92007-07-11 11:10:19 +1000259 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
Michal Marekfaa63e92007-07-11 11:10:19 +1000265 /* done = 1 if there are more stats to get and if bulkstat */
266 /* should be called again (unused here, but used in dmapi) */
267
268 if (!capable(CAP_SYS_ADMIN))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600269 return -XFS_ERROR(EPERM);
Michal Marekfaa63e92007-07-11 11:10:19 +1000270
271 if (XFS_FORCED_SHUTDOWN(mp))
272 return -XFS_ERROR(EIO);
273
274 if (get_user(addr, &p32->lastip))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600275 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000276 bulkreq.lastip = compat_ptr(addr);
277 if (get_user(bulkreq.icount, &p32->icount) ||
278 get_user(addr, &p32->ubuffer))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600279 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000280 bulkreq.ubuffer = compat_ptr(addr);
281 if (get_user(addr, &p32->ocount))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600282 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000283 bulkreq.ocount = compat_ptr(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
Michal Marekfaa63e92007-07-11 11:10:19 +1000285 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
Lachlan McIlroycd57e592007-11-23 16:30:32 +1100291 if (bulkreq.ubuffer == NULL)
292 return -XFS_ERROR(EINVAL);
293
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600294 if (cmd == XFS_IOC_FSINUMBERS_32) {
Michal Marekfaa63e92007-07-11 11:10:19 +1000295 error = xfs_inumbers(mp, &inlast, &count,
296 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600297 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
298 int res;
299
300 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
301 sizeof(compat_xfs_bstat_t),
302 NULL, 0, NULL, NULL, &res);
303 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
Michal Marekfaa63e92007-07-11 11:10:19 +1000304 error = xfs_bulkstat(mp, &inlast, &count,
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600305 xfs_bulkstat_one_compat, NULL,
Michal Marekfaa63e92007-07-11 11:10:19 +1000306 sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
307 BULKSTAT_FG_QUICK, &done);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600308 } else
309 error = XFS_ERROR(EINVAL);
Michal Marekfaa63e92007-07-11 11:10:19 +1000310 if (error)
311 return -error;
312
313 if (bulkreq.ocount != NULL) {
314 if (copy_to_user(bulkreq.lastip, &inlast,
315 sizeof(xfs_ino_t)))
316 return -XFS_ERROR(EFAULT);
317
318 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
319 return -XFS_ERROR(EFAULT);
320 }
321
322 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323}
Michal Marekfaa63e92007-07-11 11:10:19 +1000324
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600325STATIC int
326xfs_compat_handlereq_copyin(
327 xfs_fsop_handlereq_t *hreq,
328 compat_xfs_fsop_handlereq_t __user *arg32)
Michal Marek1fa503d2007-07-11 11:10:09 +1000329{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600330 compat_xfs_fsop_handlereq_t hreq32;
Michal Marek1fa503d2007-07-11 11:10:09 +1000331
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600332 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
333 return -XFS_ERROR(EFAULT);
Michal Marek1fa503d2007-07-11 11:10:09 +1000334
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600335 hreq->fd = hreq32.fd;
336 hreq->path = compat_ptr(hreq32.path);
337 hreq->oflags = hreq32.oflags;
338 hreq->ihandle = compat_ptr(hreq32.ihandle);
339 hreq->ihandlen = hreq32.ihandlen;
340 hreq->ohandle = compat_ptr(hreq32.ohandle);
341 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
342
343 return 0;
Michal Marek1fa503d2007-07-11 11:10:09 +1000344}
345
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100346STATIC struct dentry *
347xfs_compat_handlereq_to_dentry(
348 struct file *parfilp,
349 compat_xfs_fsop_handlereq_t *hreq)
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600350{
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100351 return xfs_handle_to_dentry(parfilp,
352 compat_ptr(hreq->ihandle), hreq->ihandlen);
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600353}
354
355STATIC int
356xfs_compat_attrlist_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100357 struct file *parfilp,
358 void __user *arg)
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600359{
360 int error;
361 attrlist_cursor_kern_t *cursor;
362 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100363 struct dentry *dentry;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600364 char *kbuf;
365
366 if (!capable(CAP_SYS_ADMIN))
367 return -XFS_ERROR(EPERM);
368 if (copy_from_user(&al_hreq, arg,
369 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
370 return -XFS_ERROR(EFAULT);
371 if (al_hreq.buflen > XATTR_LIST_MAX)
372 return -XFS_ERROR(EINVAL);
373
374 /*
375 * Reject flags, only allow namespaces.
376 */
377 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
378 return -XFS_ERROR(EINVAL);
379
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100380 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
381 if (IS_ERR(dentry))
382 return PTR_ERR(dentry);
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600383
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100384 error = -ENOMEM;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600385 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
386 if (!kbuf)
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100387 goto out_dput;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600388
389 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100390 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600391 al_hreq.flags, cursor);
392 if (error)
393 goto out_kfree;
394
395 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
396 error = -EFAULT;
397
398 out_kfree:
399 kfree(kbuf);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100400 out_dput:
401 dput(dentry);
402 return error;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600403}
404
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600405STATIC int
406xfs_compat_attrmulti_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100407 struct file *parfilp,
408 void __user *arg)
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600409{
410 int error;
411 compat_xfs_attr_multiop_t *ops;
412 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100413 struct dentry *dentry;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600414 unsigned int i, size;
Dave Chinnera9273ca2010-01-20 10:47:48 +1100415 unsigned char *attr_name;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600416
417 if (!capable(CAP_SYS_ADMIN))
418 return -XFS_ERROR(EPERM);
419 if (copy_from_user(&am_hreq, arg,
420 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
421 return -XFS_ERROR(EFAULT);
422
Zhitong Wangfda168c2010-03-23 09:51:22 +1100423 /* overflow check */
424 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
425 return -E2BIG;
426
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100427 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
428 if (IS_ERR(dentry))
429 return PTR_ERR(dentry);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600430
431 error = E2BIG;
432 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
433 if (!size || size > 16 * PAGE_SIZE)
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100434 goto out_dput;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600435
Li Zefan0e639bd2009-04-08 15:08:04 +0800436 ops = memdup_user(compat_ptr(am_hreq.ops), size);
437 if (IS_ERR(ops)) {
438 error = PTR_ERR(ops);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100439 goto out_dput;
Li Zefan0e639bd2009-04-08 15:08:04 +0800440 }
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600441
442 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
443 if (!attr_name)
444 goto out_kfree_ops;
445
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600446 error = 0;
447 for (i = 0; i < am_hreq.opcount; i++) {
Dave Chinnera9273ca2010-01-20 10:47:48 +1100448 ops[i].am_error = strncpy_from_user((char *)attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600449 compat_ptr(ops[i].am_attrname),
450 MAXNAMELEN);
451 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
452 error = -ERANGE;
453 if (ops[i].am_error < 0)
454 break;
455
456 switch (ops[i].am_opcode) {
457 case ATTR_OP_GET:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100458 ops[i].am_error = xfs_attrmulti_attr_get(
459 dentry->d_inode, attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600460 compat_ptr(ops[i].am_attrvalue),
461 &ops[i].am_length, ops[i].am_flags);
462 break;
463 case ATTR_OP_SET:
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100464 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
465 if (ops[i].am_error)
466 break;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100467 ops[i].am_error = xfs_attrmulti_attr_set(
468 dentry->d_inode, attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600469 compat_ptr(ops[i].am_attrvalue),
470 ops[i].am_length, ops[i].am_flags);
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100471 mnt_drop_write(parfilp->f_path.mnt);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600472 break;
473 case ATTR_OP_REMOVE:
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100474 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
475 if (ops[i].am_error)
476 break;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100477 ops[i].am_error = xfs_attrmulti_attr_remove(
478 dentry->d_inode, attr_name,
479 ops[i].am_flags);
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100480 mnt_drop_write(parfilp->f_path.mnt);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600481 break;
482 default:
483 ops[i].am_error = EINVAL;
484 }
485 }
486
487 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
488 error = XFS_ERROR(EFAULT);
489
490 kfree(attr_name);
491 out_kfree_ops:
492 kfree(ops);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100493 out_dput:
494 dput(dentry);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600495 return -error;
496}
497
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600498STATIC int
499xfs_compat_fssetdm_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100500 struct file *parfilp,
501 void __user *arg)
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600502{
503 int error;
504 struct fsdmidata fsd;
505 compat_xfs_fsop_setdm_handlereq_t dmhreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100506 struct dentry *dentry;
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600507
508 if (!capable(CAP_MKNOD))
509 return -XFS_ERROR(EPERM);
510 if (copy_from_user(&dmhreq, arg,
511 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
512 return -XFS_ERROR(EFAULT);
513
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100514 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
515 if (IS_ERR(dentry))
516 return PTR_ERR(dentry);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600517
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100518 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600519 error = -XFS_ERROR(EPERM);
520 goto out;
521 }
522
523 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
524 error = -XFS_ERROR(EFAULT);
525 goto out;
526 }
527
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100528 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600529 fsd.fsd_dmstate);
530
531out:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100532 dput(dentry);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600533 return error;
534}
535
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500536long
537xfs_file_compat_ioctl(
538 struct file *filp,
539 unsigned cmd,
540 unsigned long p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541{
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500542 struct inode *inode = filp->f_path.dentry->d_inode;
543 struct xfs_inode *ip = XFS_I(inode);
544 struct xfs_mount *mp = ip->i_mount;
545 void __user *arg = (void __user *)p;
546 int ioflags = 0;
547 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500549 if (filp->f_mode & FMODE_NOCMTIME)
550 ioflags |= IO_INVIS;
551
552 xfs_itrace_entry(ip);
553
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 switch (cmd) {
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600555 /* No size or alignment issues on any arch */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 case XFS_IOC_DIOINFO:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 case XFS_IOC_FSGEOMETRY:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 case XFS_IOC_FSGETXATTR:
559 case XFS_IOC_FSSETXATTR:
560 case XFS_IOC_FSGETXATTRA:
561 case XFS_IOC_FSSETDM:
562 case XFS_IOC_GETBMAP:
563 case XFS_IOC_GETBMAPA:
564 case XFS_IOC_GETBMAPX:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 case XFS_IOC_FSCOUNTS:
566 case XFS_IOC_SET_RESBLKS:
567 case XFS_IOC_GET_RESBLKS:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 case XFS_IOC_FSGROWFSLOG:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 case XFS_IOC_GOINGDOWN:
570 case XFS_IOC_ERROR_INJECTION:
571 case XFS_IOC_ERROR_CLEARALL:
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500572 return xfs_file_ioctl(filp, cmd, p);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600573#ifndef BROKEN_X86_ALIGNMENT
574 /* These are handled fine if no alignment issues */
575 case XFS_IOC_ALLOCSP:
576 case XFS_IOC_FREESP:
577 case XFS_IOC_RESVSP:
578 case XFS_IOC_UNRESVSP:
579 case XFS_IOC_ALLOCSP64:
580 case XFS_IOC_FREESP64:
581 case XFS_IOC_RESVSP64:
582 case XFS_IOC_UNRESVSP64:
583 case XFS_IOC_FSGEOMETRY_V1:
584 case XFS_IOC_FSGROWFSDATA:
585 case XFS_IOC_FSGROWFSRT:
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500586 return xfs_file_ioctl(filp, cmd, p);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600587#else
Eric Sandeen526c4202005-09-05 08:25:06 +1000588 case XFS_IOC_ALLOCSP_32:
589 case XFS_IOC_FREESP_32:
590 case XFS_IOC_ALLOCSP64_32:
591 case XFS_IOC_FREESP64_32:
592 case XFS_IOC_RESVSP_32:
593 case XFS_IOC_UNRESVSP_32:
594 case XFS_IOC_RESVSP64_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600595 case XFS_IOC_UNRESVSP64_32: {
596 struct xfs_flock64 bf;
597
598 if (xfs_compat_flock64_copyin(&bf, arg))
599 return -XFS_ERROR(EFAULT);
Eric Sandeen526c4202005-09-05 08:25:06 +1000600 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600601 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
602 }
Michal Marek547e00c2007-07-11 11:09:57 +1000603 case XFS_IOC_FSGEOMETRY_V1_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600604 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600605 case XFS_IOC_FSGROWFSDATA_32: {
606 struct xfs_growfs_data in;
607
608 if (xfs_compat_growfs_data_copyin(&in, arg))
609 return -XFS_ERROR(EFAULT);
610 error = xfs_growfs_data(mp, &in);
611 return -error;
612 }
613 case XFS_IOC_FSGROWFSRT_32: {
614 struct xfs_growfs_rt in;
615
616 if (xfs_compat_growfs_rt_copyin(&in, arg))
617 return -XFS_ERROR(EFAULT);
618 error = xfs_growfs_rt(mp, &in);
619 return -error;
620 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621#endif
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600622 /* long changes size, but xfs only copiese out 32 bits */
623 case XFS_IOC_GETXFLAGS_32:
624 case XFS_IOC_SETXFLAGS_32:
625 case XFS_IOC_GETVERSION_32:
626 cmd = _NATIVE_IOC(cmd, long);
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500627 return xfs_file_ioctl(filp, cmd, p);
Christoph Hellwig37258672009-09-01 14:03:08 -0400628 case XFS_IOC_SWAPEXT_32: {
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600629 struct xfs_swapext sxp;
630 struct compat_xfs_swapext __user *sxu = arg;
631
632 /* Bulk copy in up to the sx_stat field, then copy bstat */
633 if (copy_from_user(&sxp, sxu,
634 offsetof(struct xfs_swapext, sx_stat)) ||
635 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
636 return -XFS_ERROR(EFAULT);
637 error = xfs_swapext(&sxp);
638 return -error;
639 }
Michal Marekfaa63e92007-07-11 11:10:19 +1000640 case XFS_IOC_FSBULKSTAT_32:
641 case XFS_IOC_FSBULKSTAT_SINGLE_32:
642 case XFS_IOC_FSINUMBERS_32:
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600643 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
Michal Marek1fa503d2007-07-11 11:10:09 +1000644 case XFS_IOC_FD_TO_HANDLE_32:
645 case XFS_IOC_PATH_TO_HANDLE_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600646 case XFS_IOC_PATH_TO_FSHANDLE_32: {
647 struct xfs_fsop_handlereq hreq;
648
649 if (xfs_compat_handlereq_copyin(&hreq, arg))
650 return -XFS_ERROR(EFAULT);
Michal Marek1fa503d2007-07-11 11:10:09 +1000651 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600652 return xfs_find_handle(cmd, &hreq);
653 }
654 case XFS_IOC_OPEN_BY_HANDLE_32: {
655 struct xfs_fsop_handlereq hreq;
656
657 if (xfs_compat_handlereq_copyin(&hreq, arg))
658 return -XFS_ERROR(EFAULT);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100659 return xfs_open_by_handle(filp, &hreq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600660 }
661 case XFS_IOC_READLINK_BY_HANDLE_32: {
662 struct xfs_fsop_handlereq hreq;
663
664 if (xfs_compat_handlereq_copyin(&hreq, arg))
665 return -XFS_ERROR(EFAULT);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100666 return xfs_readlink_by_handle(filp, &hreq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600667 }
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600668 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100669 return xfs_compat_attrlist_by_handle(filp, arg);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600670 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100671 return xfs_compat_attrmulti_by_handle(filp, arg);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600672 case XFS_IOC_FSSETDM_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100673 return xfs_compat_fssetdm_by_handle(filp, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 default:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600675 return -XFS_ERROR(ENOIOCTLCMD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677}