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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2004-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
62e194ec | 6 | #include <linux/mount.h> |
e89c0413 | 7 | #include <linux/fsmap.h> |
1da177e4 | 8 | #include "xfs.h" |
1da177e4 | 9 | #include "xfs_fs.h" |
5467b34b | 10 | #include "xfs_shared.h" |
a4fbe6ab | 11 | #include "xfs_format.h" |
239880ef DC |
12 | #include "xfs_log_format.h" |
13 | #include "xfs_trans_resv.h" | |
faa63e95 | 14 | #include "xfs_mount.h" |
faa63e95 | 15 | #include "xfs_inode.h" |
2810bd68 | 16 | #include "xfs_iwalk.h" |
faa63e95 | 17 | #include "xfs_itable.h" |
d5547f9f | 18 | #include "xfs_fsops.h" |
471d5910 | 19 | #include "xfs_rtalloc.h" |
ebeecd2b | 20 | #include "xfs_attr.h" |
d5547f9f | 21 | #include "xfs_ioctl.h" |
a8272ce0 | 22 | #include "xfs_ioctl32.h" |
0b1b213f | 23 | #include "xfs_trace.h" |
c368ebcd | 24 | #include "xfs_sb.h" |
1da177e4 | 25 | |
526c420c ES |
26 | #define _NATIVE_IOC(cmd, type) \ |
27 | _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type)) | |
28 | ||
ffae263a | 29 | #ifdef BROKEN_X86_ALIGNMENT |
d5547f9f | 30 | STATIC int |
31 | xfs_compat_flock64_copyin( | |
32 | xfs_flock64_t *bf, | |
33 | compat_xfs_flock64_t __user *arg32) | |
526c420c | 34 | { |
d5547f9f | 35 | if (get_user(bf->l_type, &arg32->l_type) || |
36 | get_user(bf->l_whence, &arg32->l_whence) || | |
37 | get_user(bf->l_start, &arg32->l_start) || | |
38 | get_user(bf->l_len, &arg32->l_len) || | |
39 | get_user(bf->l_sysid, &arg32->l_sysid) || | |
40 | get_user(bf->l_pid, &arg32->l_pid) || | |
41 | copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32))) | |
b474c7ae | 42 | return -EFAULT; |
d5547f9f | 43 | return 0; |
526c420c ES |
44 | } |
45 | ||
d5547f9f | 46 | STATIC int |
47 | xfs_compat_ioc_fsgeometry_v1( | |
48 | struct xfs_mount *mp, | |
49 | compat_xfs_fsop_geom_v1_t __user *arg32) | |
547e00c3 | 50 | { |
1b6d968d | 51 | struct xfs_fsop_geom fsgeo; |
547e00c3 | 52 | |
91083269 | 53 | xfs_fs_geometry(&mp->m_sb, &fsgeo, 3); |
d5547f9f | 54 | /* The 32-bit variant simply has some padding at the end */ |
55 | if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1))) | |
b474c7ae | 56 | return -EFAULT; |
d5547f9f | 57 | return 0; |
547e00c3 MM |
58 | } |
59 | ||
471d5910 | 60 | STATIC int |
61 | xfs_compat_growfs_data_copyin( | |
62 | struct xfs_growfs_data *in, | |
63 | compat_xfs_growfs_data_t __user *arg32) | |
64 | { | |
65 | if (get_user(in->newblocks, &arg32->newblocks) || | |
66 | get_user(in->imaxpct, &arg32->imaxpct)) | |
b474c7ae | 67 | return -EFAULT; |
471d5910 | 68 | return 0; |
69 | } | |
70 | ||
71 | STATIC int | |
72 | xfs_compat_growfs_rt_copyin( | |
73 | struct xfs_growfs_rt *in, | |
74 | compat_xfs_growfs_rt_t __user *arg32) | |
75 | { | |
76 | if (get_user(in->newblocks, &arg32->newblocks) || | |
77 | get_user(in->extsize, &arg32->extsize)) | |
b474c7ae | 78 | return -EFAULT; |
471d5910 | 79 | return 0; |
80 | } | |
81 | ||
d5547f9f | 82 | STATIC int |
8bfe9d18 | 83 | xfs_fsinumbers_fmt_compat( |
5f19c7fc DW |
84 | struct xfs_ibulk *breq, |
85 | const struct xfs_inumbers *ig) | |
faa63e95 | 86 | { |
5f19c7fc DW |
87 | struct compat_xfs_inogrp __user *p32 = breq->ubuffer; |
88 | struct xfs_inogrp ig1; | |
89 | struct xfs_inogrp *igrp = &ig1; | |
90 | ||
91 | xfs_inumbers_to_inogrp(&ig1, ig); | |
faa63e95 | 92 | |
677717fb DW |
93 | if (put_user(igrp->xi_startino, &p32->xi_startino) || |
94 | put_user(igrp->xi_alloccount, &p32->xi_alloccount) || | |
95 | put_user(igrp->xi_allocmask, &p32->xi_allocmask)) | |
96 | return -EFAULT; | |
97 | ||
98 | return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_inogrp)); | |
faa63e95 MM |
99 | } |
100 | ||
1da177e4 | 101 | #else |
8bfe9d18 | 102 | #define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt |
e5d412f1 | 103 | #endif /* BROKEN_X86_ALIGNMENT */ |
faa63e95 | 104 | |
e94fc4a4 | 105 | STATIC int |
106 | xfs_ioctl32_bstime_copyin( | |
107 | xfs_bstime_t *bstime, | |
108 | compat_xfs_bstime_t __user *bstime32) | |
109 | { | |
110 | compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */ | |
111 | ||
112 | if (get_user(sec32, &bstime32->tv_sec) || | |
113 | get_user(bstime->tv_nsec, &bstime32->tv_nsec)) | |
b474c7ae | 114 | return -EFAULT; |
e94fc4a4 | 115 | bstime->tv_sec = sec32; |
116 | return 0; | |
117 | } | |
118 | ||
6f71fb68 DW |
119 | /* |
120 | * struct xfs_bstat has differing alignment on intel, & bstime_t sizes | |
121 | * everywhere | |
122 | */ | |
e94fc4a4 | 123 | STATIC int |
124 | xfs_ioctl32_bstat_copyin( | |
6f71fb68 DW |
125 | struct xfs_bstat *bstat, |
126 | struct compat_xfs_bstat __user *bstat32) | |
e94fc4a4 | 127 | { |
128 | if (get_user(bstat->bs_ino, &bstat32->bs_ino) || | |
129 | get_user(bstat->bs_mode, &bstat32->bs_mode) || | |
130 | get_user(bstat->bs_nlink, &bstat32->bs_nlink) || | |
131 | get_user(bstat->bs_uid, &bstat32->bs_uid) || | |
132 | get_user(bstat->bs_gid, &bstat32->bs_gid) || | |
133 | get_user(bstat->bs_rdev, &bstat32->bs_rdev) || | |
134 | get_user(bstat->bs_blksize, &bstat32->bs_blksize) || | |
135 | get_user(bstat->bs_size, &bstat32->bs_size) || | |
136 | xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) || | |
137 | xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) || | |
138 | xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) || | |
139 | get_user(bstat->bs_blocks, &bstat32->bs_size) || | |
140 | get_user(bstat->bs_xflags, &bstat32->bs_size) || | |
141 | get_user(bstat->bs_extsize, &bstat32->bs_extsize) || | |
142 | get_user(bstat->bs_extents, &bstat32->bs_extents) || | |
143 | get_user(bstat->bs_gen, &bstat32->bs_gen) || | |
6743099c AM |
144 | get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) || |
145 | get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) || | |
b1d6cc02 | 146 | get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) || |
e94fc4a4 | 147 | get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) || |
148 | get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) || | |
149 | get_user(bstat->bs_aextents, &bstat32->bs_aextents)) | |
b474c7ae | 150 | return -EFAULT; |
e94fc4a4 | 151 | return 0; |
152 | } | |
153 | ||
faa63e95 MM |
154 | /* XFS_IOC_FSBULKSTAT and friends */ |
155 | ||
d5547f9f | 156 | STATIC int |
157 | xfs_bstime_store_compat( | |
158 | compat_xfs_bstime_t __user *p32, | |
159 | const xfs_bstime_t *p) | |
faa63e95 | 160 | { |
d5547f9f | 161 | __s32 sec32; |
faa63e95 MM |
162 | |
163 | sec32 = p->tv_sec; | |
164 | if (put_user(sec32, &p32->tv_sec) || | |
165 | put_user(p->tv_nsec, &p32->tv_nsec)) | |
b474c7ae | 166 | return -EFAULT; |
faa63e95 MM |
167 | return 0; |
168 | } | |
169 | ||
65fbaf24 | 170 | /* Return 0 on success or positive error (to xfs_bulkstat()) */ |
d5547f9f | 171 | STATIC int |
8bfe9d18 | 172 | xfs_fsbulkstat_one_fmt_compat( |
7035f972 DW |
173 | struct xfs_ibulk *breq, |
174 | const struct xfs_bulkstat *bstat) | |
faa63e95 | 175 | { |
7035f972 DW |
176 | struct compat_xfs_bstat __user *p32 = breq->ubuffer; |
177 | struct xfs_bstat bs1; | |
178 | struct xfs_bstat *buffer = &bs1; | |
179 | ||
180 | xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat); | |
65fbaf24 | 181 | |
182 | if (put_user(buffer->bs_ino, &p32->bs_ino) || | |
183 | put_user(buffer->bs_mode, &p32->bs_mode) || | |
184 | put_user(buffer->bs_nlink, &p32->bs_nlink) || | |
185 | put_user(buffer->bs_uid, &p32->bs_uid) || | |
186 | put_user(buffer->bs_gid, &p32->bs_gid) || | |
187 | put_user(buffer->bs_rdev, &p32->bs_rdev) || | |
188 | put_user(buffer->bs_blksize, &p32->bs_blksize) || | |
189 | put_user(buffer->bs_size, &p32->bs_size) || | |
faa63e95 MM |
190 | xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) || |
191 | xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) || | |
192 | xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) || | |
65fbaf24 | 193 | put_user(buffer->bs_blocks, &p32->bs_blocks) || |
194 | put_user(buffer->bs_xflags, &p32->bs_xflags) || | |
195 | put_user(buffer->bs_extsize, &p32->bs_extsize) || | |
196 | put_user(buffer->bs_extents, &p32->bs_extents) || | |
197 | put_user(buffer->bs_gen, &p32->bs_gen) || | |
198 | put_user(buffer->bs_projid, &p32->bs_projid) || | |
6743099c | 199 | put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) || |
b1d6cc02 | 200 | put_user(buffer->bs_forkoff, &p32->bs_forkoff) || |
65fbaf24 | 201 | put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) || |
202 | put_user(buffer->bs_dmstate, &p32->bs_dmstate) || | |
faa63e95 | 203 | put_user(buffer->bs_aextents, &p32->bs_aextents)) |
2451337d | 204 | return -EFAULT; |
faa63e95 | 205 | |
2810bd68 | 206 | return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat)); |
2ee4fa5c | 207 | } |
208 | ||
faa63e95 MM |
209 | /* copied from xfs_ioctl.c */ |
210 | STATIC int | |
8bfe9d18 | 211 | xfs_compat_ioc_fsbulkstat( |
2ee4fa5c | 212 | xfs_mount_t *mp, |
213 | unsigned int cmd, | |
6f71fb68 | 214 | struct compat_xfs_fsop_bulkreq __user *p32) |
1da177e4 | 215 | { |
1da177e4 | 216 | u32 addr; |
2810bd68 DW |
217 | struct xfs_fsop_bulkreq bulkreq; |
218 | struct xfs_ibulk breq = { | |
219 | .mp = mp, | |
220 | .ocount = 0, | |
221 | }; | |
222 | xfs_ino_t lastino; | |
faa63e95 MM |
223 | int error; |
224 | ||
7ca860e3 NB |
225 | /* |
226 | * Output structure handling functions. Depending on the command, | |
227 | * either the xfs_bstat and xfs_inogrp structures are written out | |
228 | * to userpace memory via bulkreq.ubuffer. Normally the compat | |
229 | * functions and structure size are the correct ones to use ... | |
230 | */ | |
8bfe9d18 DW |
231 | inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat; |
232 | bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat; | |
7ca860e3 NB |
233 | |
234 | #ifdef CONFIG_X86_X32 | |
235 | if (in_x32_syscall()) { | |
236 | /* | |
237 | * ... but on x32 the input xfs_fsop_bulkreq has pointers | |
238 | * which must be handled in the "compat" (32-bit) way, while | |
239 | * the xfs_bstat and xfs_inogrp structures follow native 64- | |
240 | * bit layout convention. So adjust accordingly, otherwise | |
241 | * the data written out in compat layout will not match what | |
242 | * x32 userspace expects. | |
243 | */ | |
8bfe9d18 DW |
244 | inumbers_func = xfs_fsinumbers_fmt; |
245 | bs_one_func = xfs_fsbulkstat_one_fmt; | |
7ca860e3 NB |
246 | } |
247 | #endif | |
248 | ||
faa63e95 MM |
249 | /* done = 1 if there are more stats to get and if bulkstat */ |
250 | /* should be called again (unused here, but used in dmapi) */ | |
1da177e4 | 251 | |
faa63e95 | 252 | if (!capable(CAP_SYS_ADMIN)) |
b474c7ae | 253 | return -EPERM; |
faa63e95 MM |
254 | |
255 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 256 | return -EIO; |
faa63e95 MM |
257 | |
258 | if (get_user(addr, &p32->lastip)) | |
b474c7ae | 259 | return -EFAULT; |
faa63e95 MM |
260 | bulkreq.lastip = compat_ptr(addr); |
261 | if (get_user(bulkreq.icount, &p32->icount) || | |
262 | get_user(addr, &p32->ubuffer)) | |
b474c7ae | 263 | return -EFAULT; |
faa63e95 MM |
264 | bulkreq.ubuffer = compat_ptr(addr); |
265 | if (get_user(addr, &p32->ocount)) | |
b474c7ae | 266 | return -EFAULT; |
faa63e95 | 267 | bulkreq.ocount = compat_ptr(addr); |
1da177e4 | 268 | |
2810bd68 | 269 | if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64))) |
b474c7ae | 270 | return -EFAULT; |
faa63e95 | 271 | |
2810bd68 | 272 | if (bulkreq.icount <= 0) |
b474c7ae | 273 | return -EINVAL; |
faa63e95 | 274 | |
cd57e594 | 275 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 276 | return -EINVAL; |
cd57e594 | 277 | |
2810bd68 DW |
278 | breq.ubuffer = bulkreq.ubuffer; |
279 | breq.icount = bulkreq.icount; | |
280 | ||
281 | /* | |
282 | * FSBULKSTAT_SINGLE expects that *lastip contains the inode number | |
283 | * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect | |
284 | * that *lastip contains either zero or the number of the last inode to | |
285 | * be examined by the previous call and return results starting with | |
286 | * the next inode after that. The new bulk request back end functions | |
287 | * take the inode to start with, so we have to compute the startino | |
288 | * parameter from lastino to maintain correct function. lastino == 0 | |
289 | * is a special case because it has traditionally meant "first inode | |
290 | * in filesystem". | |
291 | */ | |
af819d27 | 292 | if (cmd == XFS_IOC_FSINUMBERS_32) { |
677717fb DW |
293 | breq.startino = lastino ? lastino + 1 : 0; |
294 | error = xfs_inumbers(&breq, inumbers_func); | |
295 | lastino = breq.startino - 1; | |
af819d27 | 296 | } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) { |
2810bd68 DW |
297 | breq.startino = lastino; |
298 | breq.icount = 1; | |
299 | error = xfs_bulkstat_one(&breq, bs_one_func); | |
300 | lastino = breq.startino; | |
af819d27 | 301 | } else if (cmd == XFS_IOC_FSBULKSTAT_32) { |
2810bd68 DW |
302 | breq.startino = lastino ? lastino + 1 : 0; |
303 | error = xfs_bulkstat(&breq, bs_one_func); | |
304 | lastino = breq.startino - 1; | |
305 | } else { | |
2451337d | 306 | error = -EINVAL; |
2810bd68 | 307 | } |
faa63e95 | 308 | if (error) |
2451337d | 309 | return error; |
faa63e95 | 310 | |
f16fe3ec | 311 | if (bulkreq.lastip != NULL && |
2810bd68 | 312 | copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t))) |
f16fe3ec | 313 | return -EFAULT; |
faa63e95 | 314 | |
f16fe3ec | 315 | if (bulkreq.ocount != NULL && |
2810bd68 | 316 | copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32))) |
f16fe3ec | 317 | return -EFAULT; |
faa63e95 MM |
318 | |
319 | return 0; | |
1da177e4 | 320 | } |
faa63e95 | 321 | |
d5547f9f | 322 | STATIC int |
323 | xfs_compat_handlereq_copyin( | |
324 | xfs_fsop_handlereq_t *hreq, | |
325 | compat_xfs_fsop_handlereq_t __user *arg32) | |
1fa503df | 326 | { |
d5547f9f | 327 | compat_xfs_fsop_handlereq_t hreq32; |
328 | ||
329 | if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t))) | |
b474c7ae | 330 | return -EFAULT; |
d5547f9f | 331 | |
332 | hreq->fd = hreq32.fd; | |
333 | hreq->path = compat_ptr(hreq32.path); | |
334 | hreq->oflags = hreq32.oflags; | |
335 | hreq->ihandle = compat_ptr(hreq32.ihandle); | |
336 | hreq->ihandlen = hreq32.ihandlen; | |
337 | hreq->ohandle = compat_ptr(hreq32.ohandle); | |
338 | hreq->ohandlen = compat_ptr(hreq32.ohandlen); | |
339 | ||
340 | return 0; | |
1fa503df MM |
341 | } |
342 | ||
ab596ad8 CH |
343 | STATIC struct dentry * |
344 | xfs_compat_handlereq_to_dentry( | |
345 | struct file *parfilp, | |
346 | compat_xfs_fsop_handlereq_t *hreq) | |
ebeecd2b | 347 | { |
ab596ad8 CH |
348 | return xfs_handle_to_dentry(parfilp, |
349 | compat_ptr(hreq->ihandle), hreq->ihandlen); | |
ebeecd2b | 350 | } |
351 | ||
352 | STATIC int | |
353 | xfs_compat_attrlist_by_handle( | |
ab596ad8 CH |
354 | struct file *parfilp, |
355 | void __user *arg) | |
ebeecd2b | 356 | { |
357 | int error; | |
358 | attrlist_cursor_kern_t *cursor; | |
c456d644 | 359 | compat_xfs_fsop_attrlist_handlereq_t __user *p = arg; |
ebeecd2b | 360 | compat_xfs_fsop_attrlist_handlereq_t al_hreq; |
ab596ad8 | 361 | struct dentry *dentry; |
ebeecd2b | 362 | char *kbuf; |
363 | ||
364 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 365 | return -EPERM; |
ebeecd2b | 366 | if (copy_from_user(&al_hreq, arg, |
367 | sizeof(compat_xfs_fsop_attrlist_handlereq_t))) | |
b474c7ae | 368 | return -EFAULT; |
31978b5c | 369 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 370 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 371 | return -EINVAL; |
ebeecd2b | 372 | |
373 | /* | |
374 | * Reject flags, only allow namespaces. | |
375 | */ | |
376 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 377 | return -EINVAL; |
ebeecd2b | 378 | |
ab596ad8 CH |
379 | dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
380 | if (IS_ERR(dentry)) | |
381 | return PTR_ERR(dentry); | |
ebeecd2b | 382 | |
ab596ad8 | 383 | error = -ENOMEM; |
707e0dda | 384 | kbuf = kmem_zalloc_large(al_hreq.buflen, 0); |
fdd3ccee DC |
385 | if (!kbuf) |
386 | goto out_dput; | |
ebeecd2b | 387 | |
388 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 389 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
ebeecd2b | 390 | al_hreq.flags, cursor); |
391 | if (error) | |
392 | goto out_kfree; | |
393 | ||
c456d644 NB |
394 | if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) { |
395 | error = -EFAULT; | |
396 | goto out_kfree; | |
397 | } | |
398 | ||
ebeecd2b | 399 | if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen)) |
400 | error = -EFAULT; | |
401 | ||
fdd3ccee DC |
402 | out_kfree: |
403 | kmem_free(kbuf); | |
404 | out_dput: | |
ab596ad8 CH |
405 | dput(dentry); |
406 | return error; | |
ebeecd2b | 407 | } |
408 | ||
28750975 | 409 | STATIC int |
410 | xfs_compat_attrmulti_by_handle( | |
ab596ad8 CH |
411 | struct file *parfilp, |
412 | void __user *arg) | |
28750975 | 413 | { |
414 | int error; | |
415 | compat_xfs_attr_multiop_t *ops; | |
416 | compat_xfs_fsop_attrmulti_handlereq_t am_hreq; | |
ab596ad8 | 417 | struct dentry *dentry; |
28750975 | 418 | unsigned int i, size; |
a9273ca5 | 419 | unsigned char *attr_name; |
28750975 | 420 | |
421 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 422 | return -EPERM; |
28750975 | 423 | if (copy_from_user(&am_hreq, arg, |
424 | sizeof(compat_xfs_fsop_attrmulti_handlereq_t))) | |
b474c7ae | 425 | return -EFAULT; |
28750975 | 426 | |
fda168c2 ZW |
427 | /* overflow check */ |
428 | if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t)) | |
429 | return -E2BIG; | |
430 | ||
ab596ad8 CH |
431 | dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
432 | if (IS_ERR(dentry)) | |
433 | return PTR_ERR(dentry); | |
28750975 | 434 | |
2451337d | 435 | error = -E2BIG; |
28750975 | 436 | size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t); |
437 | if (!size || size > 16 * PAGE_SIZE) | |
ab596ad8 | 438 | goto out_dput; |
28750975 | 439 | |
0e639bde LZ |
440 | ops = memdup_user(compat_ptr(am_hreq.ops), size); |
441 | if (IS_ERR(ops)) { | |
4d949021 | 442 | error = PTR_ERR(ops); |
ab596ad8 | 443 | goto out_dput; |
0e639bde | 444 | } |
28750975 | 445 | |
2451337d | 446 | error = -ENOMEM; |
28750975 | 447 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
448 | if (!attr_name) | |
449 | goto out_kfree_ops; | |
450 | ||
28750975 | 451 | error = 0; |
452 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 453 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
28750975 | 454 | compat_ptr(ops[i].am_attrname), |
455 | MAXNAMELEN); | |
456 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 457 | error = -ERANGE; |
28750975 | 458 | if (ops[i].am_error < 0) |
459 | break; | |
460 | ||
461 | switch (ops[i].am_opcode) { | |
462 | case ATTR_OP_GET: | |
ab596ad8 | 463 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 464 | d_inode(dentry), attr_name, |
28750975 | 465 | compat_ptr(ops[i].am_attrvalue), |
466 | &ops[i].am_length, ops[i].am_flags); | |
467 | break; | |
468 | case ATTR_OP_SET: | |
a561be71 | 469 | ops[i].am_error = mnt_want_write_file(parfilp); |
62e194ec CH |
470 | if (ops[i].am_error) |
471 | break; | |
ab596ad8 | 472 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 473 | d_inode(dentry), attr_name, |
28750975 | 474 | compat_ptr(ops[i].am_attrvalue), |
475 | ops[i].am_length, ops[i].am_flags); | |
2a79f17e | 476 | mnt_drop_write_file(parfilp); |
28750975 | 477 | break; |
478 | case ATTR_OP_REMOVE: | |
a561be71 | 479 | ops[i].am_error = mnt_want_write_file(parfilp); |
62e194ec CH |
480 | if (ops[i].am_error) |
481 | break; | |
ab596ad8 | 482 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 483 | d_inode(dentry), attr_name, |
ab596ad8 | 484 | ops[i].am_flags); |
2a79f17e | 485 | mnt_drop_write_file(parfilp); |
28750975 | 486 | break; |
487 | default: | |
2451337d | 488 | ops[i].am_error = -EINVAL; |
28750975 | 489 | } |
490 | } | |
491 | ||
492 | if (copy_to_user(compat_ptr(am_hreq.ops), ops, size)) | |
2451337d | 493 | error = -EFAULT; |
28750975 | 494 | |
495 | kfree(attr_name); | |
496 | out_kfree_ops: | |
497 | kfree(ops); | |
ab596ad8 CH |
498 | out_dput: |
499 | dput(dentry); | |
2451337d | 500 | return error; |
28750975 | 501 | } |
502 | ||
710d62aa | 503 | STATIC int |
504 | xfs_compat_fssetdm_by_handle( | |
ab596ad8 CH |
505 | struct file *parfilp, |
506 | void __user *arg) | |
710d62aa | 507 | { |
508 | int error; | |
509 | struct fsdmidata fsd; | |
510 | compat_xfs_fsop_setdm_handlereq_t dmhreq; | |
ab596ad8 | 511 | struct dentry *dentry; |
710d62aa | 512 | |
513 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 514 | return -EPERM; |
710d62aa | 515 | if (copy_from_user(&dmhreq, arg, |
516 | sizeof(compat_xfs_fsop_setdm_handlereq_t))) | |
b474c7ae | 517 | return -EFAULT; |
710d62aa | 518 | |
ab596ad8 CH |
519 | dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
520 | if (IS_ERR(dentry)) | |
521 | return PTR_ERR(dentry); | |
710d62aa | 522 | |
2b0143b5 | 523 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 524 | error = -EPERM; |
710d62aa | 525 | goto out; |
526 | } | |
527 | ||
528 | if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) { | |
b474c7ae | 529 | error = -EFAULT; |
710d62aa | 530 | goto out; |
531 | } | |
532 | ||
2b0143b5 | 533 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
710d62aa | 534 | fsd.fsd_dmstate); |
535 | ||
536 | out: | |
ab596ad8 | 537 | dput(dentry); |
710d62aa | 538 | return error; |
539 | } | |
540 | ||
4d4be482 CH |
541 | long |
542 | xfs_file_compat_ioctl( | |
543 | struct file *filp, | |
544 | unsigned cmd, | |
545 | unsigned long p) | |
1da177e4 | 546 | { |
496ad9aa | 547 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
548 | struct xfs_inode *ip = XFS_I(inode); |
549 | struct xfs_mount *mp = ip->i_mount; | |
4529e6d7 | 550 | void __user *arg = compat_ptr(p); |
4d4be482 CH |
551 | int error; |
552 | ||
cca28fb8 | 553 | trace_xfs_file_compat_ioctl(ip); |
1da177e4 LT |
554 | |
555 | switch (cmd) { | |
a9d25bde | 556 | #if defined(BROKEN_X86_ALIGNMENT) |
526c420c ES |
557 | case XFS_IOC_ALLOCSP_32: |
558 | case XFS_IOC_FREESP_32: | |
559 | case XFS_IOC_ALLOCSP64_32: | |
560 | case XFS_IOC_FREESP64_32: | |
561 | case XFS_IOC_RESVSP_32: | |
562 | case XFS_IOC_UNRESVSP_32: | |
563 | case XFS_IOC_RESVSP64_32: | |
8c1fdd0b CH |
564 | case XFS_IOC_UNRESVSP64_32: |
565 | case XFS_IOC_ZERO_RANGE_32: { | |
d5547f9f | 566 | struct xfs_flock64 bf; |
567 | ||
568 | if (xfs_compat_flock64_copyin(&bf, arg)) | |
b474c7ae | 569 | return -EFAULT; |
526c420c | 570 | cmd = _NATIVE_IOC(cmd, struct xfs_flock64); |
8f3e2058 | 571 | return xfs_ioc_space(filp, cmd, &bf); |
d5547f9f | 572 | } |
547e00c3 | 573 | case XFS_IOC_FSGEOMETRY_V1_32: |
d5547f9f | 574 | return xfs_compat_ioc_fsgeometry_v1(mp, arg); |
471d5910 | 575 | case XFS_IOC_FSGROWFSDATA_32: { |
576 | struct xfs_growfs_data in; | |
577 | ||
578 | if (xfs_compat_growfs_data_copyin(&in, arg)) | |
b474c7ae | 579 | return -EFAULT; |
d9457dc0 JK |
580 | error = mnt_want_write_file(filp); |
581 | if (error) | |
582 | return error; | |
471d5910 | 583 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 584 | mnt_drop_write_file(filp); |
2451337d | 585 | return error; |
471d5910 | 586 | } |
587 | case XFS_IOC_FSGROWFSRT_32: { | |
588 | struct xfs_growfs_rt in; | |
589 | ||
590 | if (xfs_compat_growfs_rt_copyin(&in, arg)) | |
b474c7ae | 591 | return -EFAULT; |
d9457dc0 JK |
592 | error = mnt_want_write_file(filp); |
593 | if (error) | |
594 | return error; | |
471d5910 | 595 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 596 | mnt_drop_write_file(filp); |
2451337d | 597 | return error; |
471d5910 | 598 | } |
1da177e4 | 599 | #endif |
e5d412f1 | 600 | /* long changes size, but xfs only copiese out 32 bits */ |
601 | case XFS_IOC_GETXFLAGS_32: | |
602 | case XFS_IOC_SETXFLAGS_32: | |
603 | case XFS_IOC_GETVERSION_32: | |
604 | cmd = _NATIVE_IOC(cmd, long); | |
4d4be482 | 605 | return xfs_file_ioctl(filp, cmd, p); |
3725867d | 606 | case XFS_IOC_SWAPEXT_32: { |
e5d412f1 | 607 | struct xfs_swapext sxp; |
608 | struct compat_xfs_swapext __user *sxu = arg; | |
609 | ||
610 | /* Bulk copy in up to the sx_stat field, then copy bstat */ | |
611 | if (copy_from_user(&sxp, sxu, | |
612 | offsetof(struct xfs_swapext, sx_stat)) || | |
613 | xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) | |
b474c7ae | 614 | return -EFAULT; |
d9457dc0 JK |
615 | error = mnt_want_write_file(filp); |
616 | if (error) | |
617 | return error; | |
a133d952 | 618 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 619 | mnt_drop_write_file(filp); |
2451337d | 620 | return error; |
e5d412f1 | 621 | } |
faa63e95 MM |
622 | case XFS_IOC_FSBULKSTAT_32: |
623 | case XFS_IOC_FSBULKSTAT_SINGLE_32: | |
624 | case XFS_IOC_FSINUMBERS_32: | |
8bfe9d18 | 625 | return xfs_compat_ioc_fsbulkstat(mp, cmd, arg); |
1fa503df MM |
626 | case XFS_IOC_FD_TO_HANDLE_32: |
627 | case XFS_IOC_PATH_TO_HANDLE_32: | |
d5547f9f | 628 | case XFS_IOC_PATH_TO_FSHANDLE_32: { |
629 | struct xfs_fsop_handlereq hreq; | |
630 | ||
631 | if (xfs_compat_handlereq_copyin(&hreq, arg)) | |
b474c7ae | 632 | return -EFAULT; |
1fa503df | 633 | cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq); |
d5547f9f | 634 | return xfs_find_handle(cmd, &hreq); |
635 | } | |
636 | case XFS_IOC_OPEN_BY_HANDLE_32: { | |
637 | struct xfs_fsop_handlereq hreq; | |
638 | ||
639 | if (xfs_compat_handlereq_copyin(&hreq, arg)) | |
b474c7ae | 640 | return -EFAULT; |
ab596ad8 | 641 | return xfs_open_by_handle(filp, &hreq); |
d5547f9f | 642 | } |
643 | case XFS_IOC_READLINK_BY_HANDLE_32: { | |
644 | struct xfs_fsop_handlereq hreq; | |
645 | ||
646 | if (xfs_compat_handlereq_copyin(&hreq, arg)) | |
b474c7ae | 647 | return -EFAULT; |
ab596ad8 | 648 | return xfs_readlink_by_handle(filp, &hreq); |
d5547f9f | 649 | } |
ebeecd2b | 650 | case XFS_IOC_ATTRLIST_BY_HANDLE_32: |
ab596ad8 | 651 | return xfs_compat_attrlist_by_handle(filp, arg); |
28750975 | 652 | case XFS_IOC_ATTRMULTI_BY_HANDLE_32: |
ab596ad8 | 653 | return xfs_compat_attrmulti_by_handle(filp, arg); |
710d62aa | 654 | case XFS_IOC_FSSETDM_BY_HANDLE_32: |
ab596ad8 | 655 | return xfs_compat_fssetdm_by_handle(filp, arg); |
1da177e4 | 656 | default: |
314e01a6 | 657 | /* try the native version */ |
4529e6d7 | 658 | return xfs_file_ioctl(filp, cmd, (unsigned long)arg); |
1da177e4 | 659 | } |
1da177e4 | 660 | } |