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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_log.h"
Michal Marekfaa63e92007-07-11 11:10:19 +100026#include "xfs_trans.h"
27#include "xfs_sb.h"
28#include "xfs_ag.h"
Michal Marekfaa63e92007-07-11 11:10:19 +100029#include "xfs_mount.h"
30#include "xfs_bmap_btree.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include "xfs_vnode.h"
Michal Marekfaa63e92007-07-11 11:10:19 +100032#include "xfs_dinode.h"
33#include "xfs_inode.h"
34#include "xfs_itable.h"
35#include "xfs_error.h"
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060036#include "xfs_fsops.h"
sandeen@sandeen.net471d5912008-11-25 21:20:10 -060037#include "xfs_alloc.h"
38#include "xfs_rtalloc.h"
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -060039#include "xfs_attr.h"
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060040#include "xfs_ioctl.h"
David Chinnera8272ce2007-11-23 16:28:09 +110041#include "xfs_ioctl32.h"
Christoph Hellwig0b1b2132009-12-14 23:14:59 +000042#include "xfs_trace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Eric Sandeen526c4202005-09-05 08:25:06 +100044#define _NATIVE_IOC(cmd, type) \
45 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
46
sandeen@sandeen.netffae2632008-11-25 21:20:07 -060047#ifdef BROKEN_X86_ALIGNMENT
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060048STATIC int
49xfs_compat_flock64_copyin(
50 xfs_flock64_t *bf,
51 compat_xfs_flock64_t __user *arg32)
Eric Sandeen526c4202005-09-05 08:25:06 +100052{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060053 if (get_user(bf->l_type, &arg32->l_type) ||
54 get_user(bf->l_whence, &arg32->l_whence) ||
55 get_user(bf->l_start, &arg32->l_start) ||
56 get_user(bf->l_len, &arg32->l_len) ||
57 get_user(bf->l_sysid, &arg32->l_sysid) ||
58 get_user(bf->l_pid, &arg32->l_pid) ||
59 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
60 return -XFS_ERROR(EFAULT);
61 return 0;
Eric Sandeen526c4202005-09-05 08:25:06 +100062}
63
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060064STATIC int
65xfs_compat_ioc_fsgeometry_v1(
66 struct xfs_mount *mp,
67 compat_xfs_fsop_geom_v1_t __user *arg32)
Michal Marek547e00c2007-07-11 11:09:57 +100068{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060069 xfs_fsop_geom_t fsgeo;
70 int error;
Michal Marek547e00c2007-07-11 11:09:57 +100071
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060072 error = xfs_fs_geometry(mp, &fsgeo, 3);
73 if (error)
74 return -error;
75 /* The 32-bit variant simply has some padding at the end */
76 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
77 return -XFS_ERROR(EFAULT);
78 return 0;
Michal Marek547e00c2007-07-11 11:09:57 +100079}
80
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -060081STATIC int
sandeen@sandeen.net471d5912008-11-25 21:20:10 -060082xfs_compat_growfs_data_copyin(
83 struct xfs_growfs_data *in,
84 compat_xfs_growfs_data_t __user *arg32)
85{
86 if (get_user(in->newblocks, &arg32->newblocks) ||
87 get_user(in->imaxpct, &arg32->imaxpct))
88 return -XFS_ERROR(EFAULT);
89 return 0;
90}
91
92STATIC int
93xfs_compat_growfs_rt_copyin(
94 struct xfs_growfs_rt *in,
95 compat_xfs_growfs_rt_t __user *arg32)
96{
97 if (get_user(in->newblocks, &arg32->newblocks) ||
98 get_user(in->extsize, &arg32->extsize))
99 return -XFS_ERROR(EFAULT);
100 return 0;
101}
102
103STATIC int
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600104xfs_inumbers_fmt_compat(
105 void __user *ubuffer,
106 const xfs_inogrp_t *buffer,
107 long count,
108 long *written)
Michal Marekfaa63e92007-07-11 11:10:19 +1000109{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600110 compat_xfs_inogrp_t __user *p32 = ubuffer;
111 long i;
Michal Marekfaa63e92007-07-11 11:10:19 +1000112
113 for (i = 0; i < count; i++) {
114 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
115 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
116 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600117 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000118 }
119 *written = count * sizeof(*p32);
120 return 0;
121}
122
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123#else
Michal Marekfaa63e92007-07-11 11:10:19 +1000124#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600125#endif /* BROKEN_X86_ALIGNMENT */
Michal Marekfaa63e92007-07-11 11:10:19 +1000126
sandeen@sandeen.nete94fc4a2008-11-25 21:20:09 -0600127STATIC int
128xfs_ioctl32_bstime_copyin(
129 xfs_bstime_t *bstime,
130 compat_xfs_bstime_t __user *bstime32)
131{
132 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
133
134 if (get_user(sec32, &bstime32->tv_sec) ||
135 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
136 return -XFS_ERROR(EFAULT);
137 bstime->tv_sec = sec32;
138 return 0;
139}
140
141/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
142STATIC int
143xfs_ioctl32_bstat_copyin(
144 xfs_bstat_t *bstat,
145 compat_xfs_bstat_t __user *bstat32)
146{
147 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
148 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
149 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
150 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
151 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
152 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
153 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
154 get_user(bstat->bs_size, &bstat32->bs_size) ||
155 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
156 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
157 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
158 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
159 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
160 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
161 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
162 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
Arkadiusz Mi?kiewicz67430992010-09-26 06:10:18 +0000163 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
164 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
sandeen@sandeen.nete94fc4a2008-11-25 21:20:09 -0600165 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
166 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
167 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
168 return -XFS_ERROR(EFAULT);
169 return 0;
170}
171
Michal Marekfaa63e92007-07-11 11:10:19 +1000172/* XFS_IOC_FSBULKSTAT and friends */
173
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600174STATIC int
175xfs_bstime_store_compat(
176 compat_xfs_bstime_t __user *p32,
177 const xfs_bstime_t *p)
Michal Marekfaa63e92007-07-11 11:10:19 +1000178{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600179 __s32 sec32;
Michal Marekfaa63e92007-07-11 11:10:19 +1000180
181 sec32 = p->tv_sec;
182 if (put_user(sec32, &p32->tv_sec) ||
183 put_user(p->tv_nsec, &p32->tv_nsec))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600184 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000185 return 0;
186}
187
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600188/* Return 0 on success or positive error (to xfs_bulkstat()) */
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600189STATIC int
190xfs_bulkstat_one_fmt_compat(
Michal Marekfaa63e92007-07-11 11:10:19 +1000191 void __user *ubuffer,
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600192 int ubsize,
193 int *ubused,
Michal Marekfaa63e92007-07-11 11:10:19 +1000194 const xfs_bstat_t *buffer)
195{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600196 compat_xfs_bstat_t __user *p32 = ubuffer;
Michal Marekfaa63e92007-07-11 11:10:19 +1000197
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600198 if (ubsize < sizeof(*p32))
199 return XFS_ERROR(ENOMEM);
200
201 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
202 put_user(buffer->bs_mode, &p32->bs_mode) ||
203 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
204 put_user(buffer->bs_uid, &p32->bs_uid) ||
205 put_user(buffer->bs_gid, &p32->bs_gid) ||
206 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
207 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
208 put_user(buffer->bs_size, &p32->bs_size) ||
Michal Marekfaa63e92007-07-11 11:10:19 +1000209 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
210 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
211 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600212 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
213 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
214 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
215 put_user(buffer->bs_extents, &p32->bs_extents) ||
216 put_user(buffer->bs_gen, &p32->bs_gen) ||
217 put_user(buffer->bs_projid, &p32->bs_projid) ||
Arkadiusz Mi?kiewicz67430992010-09-26 06:10:18 +0000218 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600219 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
220 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
Michal Marekfaa63e92007-07-11 11:10:19 +1000221 put_user(buffer->bs_aextents, &p32->bs_aextents))
sandeen@sandeen.net65fbaf22008-11-25 21:20:12 -0600222 return XFS_ERROR(EFAULT);
223 if (ubused)
224 *ubused = sizeof(*p32);
225 return 0;
Michal Marekfaa63e92007-07-11 11:10:19 +1000226}
227
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600228STATIC int
229xfs_bulkstat_one_compat(
230 xfs_mount_t *mp, /* mount point for filesystem */
231 xfs_ino_t ino, /* inode number to get data for */
232 void __user *buffer, /* buffer to place output in */
233 int ubsize, /* size of buffer */
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600234 int *ubused, /* bytes used by me */
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600235 int *stat) /* BULKSTAT_RV_... */
236{
237 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
Dave Chinner7b6259e2010-06-24 11:35:17 +1000238 xfs_bulkstat_one_fmt_compat,
Christoph Hellwig7dce11d2010-06-23 18:11:11 +1000239 ubused, stat);
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600240}
241
Michal Marekfaa63e92007-07-11 11:10:19 +1000242/* copied from xfs_ioctl.c */
243STATIC int
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600244xfs_compat_ioc_bulkstat(
245 xfs_mount_t *mp,
246 unsigned int cmd,
247 compat_xfs_fsop_bulkreq_t __user *p32)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 u32 addr;
Michal Marekfaa63e92007-07-11 11:10:19 +1000250 xfs_fsop_bulkreq_t bulkreq;
251 int count; /* # of records returned */
252 xfs_ino_t inlast; /* last inode number */
253 int done;
254 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
Michal Marekfaa63e92007-07-11 11:10:19 +1000256 /* done = 1 if there are more stats to get and if bulkstat */
257 /* should be called again (unused here, but used in dmapi) */
258
259 if (!capable(CAP_SYS_ADMIN))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600260 return -XFS_ERROR(EPERM);
Michal Marekfaa63e92007-07-11 11:10:19 +1000261
262 if (XFS_FORCED_SHUTDOWN(mp))
263 return -XFS_ERROR(EIO);
264
265 if (get_user(addr, &p32->lastip))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600266 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000267 bulkreq.lastip = compat_ptr(addr);
268 if (get_user(bulkreq.icount, &p32->icount) ||
269 get_user(addr, &p32->ubuffer))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600270 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000271 bulkreq.ubuffer = compat_ptr(addr);
272 if (get_user(addr, &p32->ocount))
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600273 return -XFS_ERROR(EFAULT);
Michal Marekfaa63e92007-07-11 11:10:19 +1000274 bulkreq.ocount = compat_ptr(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
Michal Marekfaa63e92007-07-11 11:10:19 +1000276 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
277 return -XFS_ERROR(EFAULT);
278
279 if ((count = bulkreq.icount) <= 0)
280 return -XFS_ERROR(EINVAL);
281
Lachlan McIlroycd57e592007-11-23 16:30:32 +1100282 if (bulkreq.ubuffer == NULL)
283 return -XFS_ERROR(EINVAL);
284
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600285 if (cmd == XFS_IOC_FSINUMBERS_32) {
Michal Marekfaa63e92007-07-11 11:10:19 +1000286 error = xfs_inumbers(mp, &inlast, &count,
287 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600288 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
289 int res;
290
291 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
Dave Chinner8d2a5e62012-03-07 04:50:19 +0000292 sizeof(compat_xfs_bstat_t), NULL, &res);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600293 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
Michal Marekfaa63e92007-07-11 11:10:19 +1000294 error = xfs_bulkstat(mp, &inlast, &count,
Christoph Hellwig7dce11d2010-06-23 18:11:11 +1000295 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
296 bulkreq.ubuffer, &done);
sandeen@sandeen.netaf819d22008-11-25 21:20:13 -0600297 } else
298 error = XFS_ERROR(EINVAL);
Michal Marekfaa63e92007-07-11 11:10:19 +1000299 if (error)
300 return -error;
301
302 if (bulkreq.ocount != NULL) {
303 if (copy_to_user(bulkreq.lastip, &inlast,
304 sizeof(xfs_ino_t)))
305 return -XFS_ERROR(EFAULT);
306
307 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
308 return -XFS_ERROR(EFAULT);
309 }
310
311 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312}
Michal Marekfaa63e92007-07-11 11:10:19 +1000313
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600314STATIC int
315xfs_compat_handlereq_copyin(
316 xfs_fsop_handlereq_t *hreq,
317 compat_xfs_fsop_handlereq_t __user *arg32)
Michal Marek1fa503d2007-07-11 11:10:09 +1000318{
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600319 compat_xfs_fsop_handlereq_t hreq32;
Michal Marek1fa503d2007-07-11 11:10:09 +1000320
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600321 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
322 return -XFS_ERROR(EFAULT);
Michal Marek1fa503d2007-07-11 11:10:09 +1000323
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600324 hreq->fd = hreq32.fd;
325 hreq->path = compat_ptr(hreq32.path);
326 hreq->oflags = hreq32.oflags;
327 hreq->ihandle = compat_ptr(hreq32.ihandle);
328 hreq->ihandlen = hreq32.ihandlen;
329 hreq->ohandle = compat_ptr(hreq32.ohandle);
330 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
331
332 return 0;
Michal Marek1fa503d2007-07-11 11:10:09 +1000333}
334
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100335STATIC struct dentry *
336xfs_compat_handlereq_to_dentry(
337 struct file *parfilp,
338 compat_xfs_fsop_handlereq_t *hreq)
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600339{
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100340 return xfs_handle_to_dentry(parfilp,
341 compat_ptr(hreq->ihandle), hreq->ihandlen);
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600342}
343
344STATIC int
345xfs_compat_attrlist_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100346 struct file *parfilp,
347 void __user *arg)
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600348{
349 int error;
350 attrlist_cursor_kern_t *cursor;
351 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100352 struct dentry *dentry;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600353 char *kbuf;
354
355 if (!capable(CAP_SYS_ADMIN))
356 return -XFS_ERROR(EPERM);
357 if (copy_from_user(&al_hreq, arg,
358 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
359 return -XFS_ERROR(EFAULT);
360 if (al_hreq.buflen > XATTR_LIST_MAX)
361 return -XFS_ERROR(EINVAL);
362
363 /*
364 * Reject flags, only allow namespaces.
365 */
366 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
367 return -XFS_ERROR(EINVAL);
368
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100369 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
370 if (IS_ERR(dentry))
371 return PTR_ERR(dentry);
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600372
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100373 error = -ENOMEM;
Dave Chinnerfdd3cce2013-09-02 20:53:00 +1000374 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
375 if (!kbuf)
376 goto out_dput;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600377
378 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100379 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600380 al_hreq.flags, cursor);
381 if (error)
382 goto out_kfree;
383
384 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
385 error = -EFAULT;
386
Dave Chinnerfdd3cce2013-09-02 20:53:00 +1000387out_kfree:
388 kmem_free(kbuf);
389out_dput:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100390 dput(dentry);
391 return error;
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600392}
393
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600394STATIC int
395xfs_compat_attrmulti_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100396 struct file *parfilp,
397 void __user *arg)
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600398{
399 int error;
400 compat_xfs_attr_multiop_t *ops;
401 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100402 struct dentry *dentry;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600403 unsigned int i, size;
Dave Chinnera9273ca2010-01-20 10:47:48 +1100404 unsigned char *attr_name;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600405
406 if (!capable(CAP_SYS_ADMIN))
407 return -XFS_ERROR(EPERM);
408 if (copy_from_user(&am_hreq, arg,
409 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
410 return -XFS_ERROR(EFAULT);
411
Zhitong Wangfda168c2010-03-23 09:51:22 +1100412 /* overflow check */
413 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
414 return -E2BIG;
415
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100416 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
417 if (IS_ERR(dentry))
418 return PTR_ERR(dentry);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600419
420 error = E2BIG;
421 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
422 if (!size || size > 16 * PAGE_SIZE)
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100423 goto out_dput;
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600424
Li Zefan0e639bd2009-04-08 15:08:04 +0800425 ops = memdup_user(compat_ptr(am_hreq.ops), size);
426 if (IS_ERR(ops)) {
427 error = PTR_ERR(ops);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100428 goto out_dput;
Li Zefan0e639bd2009-04-08 15:08:04 +0800429 }
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600430
431 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
432 if (!attr_name)
433 goto out_kfree_ops;
434
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600435 error = 0;
436 for (i = 0; i < am_hreq.opcount; i++) {
Dave Chinnera9273ca2010-01-20 10:47:48 +1100437 ops[i].am_error = strncpy_from_user((char *)attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600438 compat_ptr(ops[i].am_attrname),
439 MAXNAMELEN);
440 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
441 error = -ERANGE;
442 if (ops[i].am_error < 0)
443 break;
444
445 switch (ops[i].am_opcode) {
446 case ATTR_OP_GET:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100447 ops[i].am_error = xfs_attrmulti_attr_get(
448 dentry->d_inode, attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600449 compat_ptr(ops[i].am_attrvalue),
450 &ops[i].am_length, ops[i].am_flags);
451 break;
452 case ATTR_OP_SET:
Al Viroa561be72011-11-23 11:57:51 -0500453 ops[i].am_error = mnt_want_write_file(parfilp);
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100454 if (ops[i].am_error)
455 break;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100456 ops[i].am_error = xfs_attrmulti_attr_set(
457 dentry->d_inode, attr_name,
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600458 compat_ptr(ops[i].am_attrvalue),
459 ops[i].am_length, ops[i].am_flags);
Al Viro2a79f172011-12-09 08:06:57 -0500460 mnt_drop_write_file(parfilp);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600461 break;
462 case ATTR_OP_REMOVE:
Al Viroa561be72011-11-23 11:57:51 -0500463 ops[i].am_error = mnt_want_write_file(parfilp);
Christoph Hellwig62e194e2009-01-19 02:03:03 +0100464 if (ops[i].am_error)
465 break;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100466 ops[i].am_error = xfs_attrmulti_attr_remove(
467 dentry->d_inode, attr_name,
468 ops[i].am_flags);
Al Viro2a79f172011-12-09 08:06:57 -0500469 mnt_drop_write_file(parfilp);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600470 break;
471 default:
472 ops[i].am_error = EINVAL;
473 }
474 }
475
476 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
477 error = XFS_ERROR(EFAULT);
478
479 kfree(attr_name);
480 out_kfree_ops:
481 kfree(ops);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100482 out_dput:
483 dput(dentry);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600484 return -error;
485}
486
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600487STATIC int
488xfs_compat_fssetdm_by_handle(
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100489 struct file *parfilp,
490 void __user *arg)
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600491{
492 int error;
493 struct fsdmidata fsd;
494 compat_xfs_fsop_setdm_handlereq_t dmhreq;
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100495 struct dentry *dentry;
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600496
497 if (!capable(CAP_MKNOD))
498 return -XFS_ERROR(EPERM);
499 if (copy_from_user(&dmhreq, arg,
500 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
501 return -XFS_ERROR(EFAULT);
502
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100503 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
504 if (IS_ERR(dentry))
505 return PTR_ERR(dentry);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600506
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100507 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600508 error = -XFS_ERROR(EPERM);
509 goto out;
510 }
511
512 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
513 error = -XFS_ERROR(EFAULT);
514 goto out;
515 }
516
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100517 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600518 fsd.fsd_dmstate);
519
520out:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100521 dput(dentry);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600522 return error;
523}
524
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500525long
526xfs_file_compat_ioctl(
527 struct file *filp,
528 unsigned cmd,
529 unsigned long p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530{
Al Viro496ad9a2013-01-23 17:07:38 -0500531 struct inode *inode = file_inode(filp);
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500532 struct xfs_inode *ip = XFS_I(inode);
533 struct xfs_mount *mp = ip->i_mount;
534 void __user *arg = (void __user *)p;
535 int ioflags = 0;
536 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500538 if (filp->f_mode & FMODE_NOCMTIME)
539 ioflags |= IO_INVIS;
540
Christoph Hellwigcca28fb2010-06-24 11:57:09 +1000541 trace_xfs_file_compat_ioctl(ip);
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500542
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 switch (cmd) {
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600544 /* No size or alignment issues on any arch */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 case XFS_IOC_DIOINFO:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 case XFS_IOC_FSGEOMETRY:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 case XFS_IOC_FSGETXATTR:
548 case XFS_IOC_FSSETXATTR:
549 case XFS_IOC_FSGETXATTRA:
550 case XFS_IOC_FSSETDM:
551 case XFS_IOC_GETBMAP:
552 case XFS_IOC_GETBMAPA:
553 case XFS_IOC_GETBMAPX:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 case XFS_IOC_FSCOUNTS:
555 case XFS_IOC_SET_RESBLKS:
556 case XFS_IOC_GET_RESBLKS:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 case XFS_IOC_FSGROWFSLOG:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 case XFS_IOC_GOINGDOWN:
559 case XFS_IOC_ERROR_INJECTION:
560 case XFS_IOC_ERROR_CLEARALL:
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500561 return xfs_file_ioctl(filp, cmd, p);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600562#ifndef BROKEN_X86_ALIGNMENT
563 /* These are handled fine if no alignment issues */
564 case XFS_IOC_ALLOCSP:
565 case XFS_IOC_FREESP:
566 case XFS_IOC_RESVSP:
567 case XFS_IOC_UNRESVSP:
568 case XFS_IOC_ALLOCSP64:
569 case XFS_IOC_FREESP64:
570 case XFS_IOC_RESVSP64:
571 case XFS_IOC_UNRESVSP64:
572 case XFS_IOC_FSGEOMETRY_V1:
573 case XFS_IOC_FSGROWFSDATA:
574 case XFS_IOC_FSGROWFSRT:
Dave Chinner44722352010-08-24 12:02:11 +1000575 case XFS_IOC_ZERO_RANGE:
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500576 return xfs_file_ioctl(filp, cmd, p);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600577#else
Eric Sandeen526c4202005-09-05 08:25:06 +1000578 case XFS_IOC_ALLOCSP_32:
579 case XFS_IOC_FREESP_32:
580 case XFS_IOC_ALLOCSP64_32:
581 case XFS_IOC_FREESP64_32:
582 case XFS_IOC_RESVSP_32:
583 case XFS_IOC_UNRESVSP_32:
584 case XFS_IOC_RESVSP64_32:
Christoph Hellwig8c1fdd02011-04-21 13:21:03 +0000585 case XFS_IOC_UNRESVSP64_32:
586 case XFS_IOC_ZERO_RANGE_32: {
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600587 struct xfs_flock64 bf;
588
589 if (xfs_compat_flock64_copyin(&bf, arg))
590 return -XFS_ERROR(EFAULT);
Eric Sandeen526c4202005-09-05 08:25:06 +1000591 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600592 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
593 }
Michal Marek547e00c2007-07-11 11:09:57 +1000594 case XFS_IOC_FSGEOMETRY_V1_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600595 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600596 case XFS_IOC_FSGROWFSDATA_32: {
597 struct xfs_growfs_data in;
598
599 if (xfs_compat_growfs_data_copyin(&in, arg))
600 return -XFS_ERROR(EFAULT);
Jan Karad9457dc2012-06-12 16:20:39 +0200601 error = mnt_want_write_file(filp);
602 if (error)
603 return error;
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600604 error = xfs_growfs_data(mp, &in);
Jan Karad9457dc2012-06-12 16:20:39 +0200605 mnt_drop_write_file(filp);
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600606 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);
Jan Karad9457dc2012-06-12 16:20:39 +0200613 error = mnt_want_write_file(filp);
614 if (error)
615 return error;
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600616 error = xfs_growfs_rt(mp, &in);
Jan Karad9457dc2012-06-12 16:20:39 +0200617 mnt_drop_write_file(filp);
sandeen@sandeen.net471d5912008-11-25 21:20:10 -0600618 return -error;
619 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620#endif
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600621 /* long changes size, but xfs only copiese out 32 bits */
622 case XFS_IOC_GETXFLAGS_32:
623 case XFS_IOC_SETXFLAGS_32:
624 case XFS_IOC_GETVERSION_32:
625 cmd = _NATIVE_IOC(cmd, long);
Christoph Hellwig4d4be482008-12-09 04:47:33 -0500626 return xfs_file_ioctl(filp, cmd, p);
Christoph Hellwig37258672009-09-01 14:03:08 -0400627 case XFS_IOC_SWAPEXT_32: {
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600628 struct xfs_swapext sxp;
629 struct compat_xfs_swapext __user *sxu = arg;
630
631 /* Bulk copy in up to the sx_stat field, then copy bstat */
632 if (copy_from_user(&sxp, sxu,
633 offsetof(struct xfs_swapext, sx_stat)) ||
634 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
635 return -XFS_ERROR(EFAULT);
Jan Karad9457dc2012-06-12 16:20:39 +0200636 error = mnt_want_write_file(filp);
637 if (error)
638 return error;
Dave Chinnera133d952013-08-12 20:49:48 +1000639 error = xfs_ioc_swapext(&sxp);
Jan Karad9457dc2012-06-12 16:20:39 +0200640 mnt_drop_write_file(filp);
sandeen@sandeen.nete5d412f2008-11-25 21:20:17 -0600641 return -error;
642 }
Michal Marekfaa63e92007-07-11 11:10:19 +1000643 case XFS_IOC_FSBULKSTAT_32:
644 case XFS_IOC_FSBULKSTAT_SINGLE_32:
645 case XFS_IOC_FSINUMBERS_32:
sandeen@sandeen.net2ee4fa52008-11-25 21:20:11 -0600646 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
Michal Marek1fa503d2007-07-11 11:10:09 +1000647 case XFS_IOC_FD_TO_HANDLE_32:
648 case XFS_IOC_PATH_TO_HANDLE_32:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600649 case XFS_IOC_PATH_TO_FSHANDLE_32: {
650 struct xfs_fsop_handlereq hreq;
651
652 if (xfs_compat_handlereq_copyin(&hreq, arg))
653 return -XFS_ERROR(EFAULT);
Michal Marek1fa503d2007-07-11 11:10:09 +1000654 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600655 return xfs_find_handle(cmd, &hreq);
656 }
657 case XFS_IOC_OPEN_BY_HANDLE_32: {
658 struct xfs_fsop_handlereq hreq;
659
660 if (xfs_compat_handlereq_copyin(&hreq, arg))
661 return -XFS_ERROR(EFAULT);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100662 return xfs_open_by_handle(filp, &hreq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600663 }
664 case XFS_IOC_READLINK_BY_HANDLE_32: {
665 struct xfs_fsop_handlereq hreq;
666
667 if (xfs_compat_handlereq_copyin(&hreq, arg))
668 return -XFS_ERROR(EFAULT);
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100669 return xfs_readlink_by_handle(filp, &hreq);
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600670 }
sandeen@sandeen.netebeecd22008-11-25 21:20:14 -0600671 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100672 return xfs_compat_attrlist_by_handle(filp, arg);
sandeen@sandeen.net28750972008-11-25 21:20:15 -0600673 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100674 return xfs_compat_attrmulti_by_handle(filp, arg);
sandeen@sandeen.net710d62a2008-11-25 21:20:16 -0600675 case XFS_IOC_FSSETDM_BY_HANDLE_32:
Christoph Hellwigab596ad2009-01-19 02:02:57 +0100676 return xfs_compat_fssetdm_by_handle(filp, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 default:
sandeen@sandeen.netd5547f92008-11-25 21:20:08 -0600678 return -XFS_ERROR(ENOIOCTLCMD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680}