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2
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5
6#include <linux/mount.h>
7#include <linux/fsmap.h>
8#include "xfs.h"
9#include "xfs_fs.h"
10#include "xfs_shared.h"
11#include "xfs_format.h"
12#include "xfs_log_format.h"
13#include "xfs_trans_resv.h"
14#include "xfs_mount.h"
15#include "xfs_inode.h"
16#include "xfs_iwalk.h"
17#include "xfs_itable.h"
18#include "xfs_fsops.h"
19#include "xfs_rtalloc.h"
20#include "xfs_attr.h"
21#include "xfs_ioctl.h"
22#include "xfs_ioctl32.h"
23#include "xfs_trace.h"
24#include "xfs_sb.h"
25
26#define _NATIVE_IOC(cmd, type) \
27 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
28
29#ifdef BROKEN_X86_ALIGNMENT
30STATIC int
31xfs_compat_flock64_copyin(
32 xfs_flock64_t *bf,
33 compat_xfs_flock64_t __user *arg32)
34{
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)))
42 return -EFAULT;
43 return 0;
44}
45
46STATIC int
47xfs_compat_ioc_fsgeometry_v1(
48 struct xfs_mount *mp,
49 compat_xfs_fsop_geom_v1_t __user *arg32)
50{
51 struct xfs_fsop_geom fsgeo;
52
53 xfs_fs_geometry(&mp->m_sb, &fsgeo, 3);
54
55 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
56 return -EFAULT;
57 return 0;
58}
59
60STATIC int
61xfs_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))
67 return -EFAULT;
68 return 0;
69}
70
71STATIC int
72xfs_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))
78 return -EFAULT;
79 return 0;
80}
81
82STATIC int
83xfs_fsinumbers_fmt_compat(
84 struct xfs_ibulk *breq,
85 const struct xfs_inumbers *ig)
86{
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);
92
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));
99}
100
101#else
102#define xfs_fsinumbers_fmt_compat xfs_fsinumbers_fmt
103#endif
104
105STATIC int
106xfs_ioctl32_bstime_copyin(
107 xfs_bstime_t *bstime,
108 compat_xfs_bstime_t __user *bstime32)
109{
110 old_time32_t sec32;
111
112 if (get_user(sec32, &bstime32->tv_sec) ||
113 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
114 return -EFAULT;
115 bstime->tv_sec = sec32;
116 return 0;
117}
118
119
120
121
122
123STATIC int
124xfs_ioctl32_bstat_copyin(
125 struct xfs_bstat *bstat,
126 struct compat_xfs_bstat __user *bstat32)
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) ||
144 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
145 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
146 get_user(bstat->bs_forkoff, &bstat32->bs_forkoff) ||
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))
150 return -EFAULT;
151 return 0;
152}
153
154
155
156STATIC int
157xfs_bstime_store_compat(
158 compat_xfs_bstime_t __user *p32,
159 const xfs_bstime_t *p)
160{
161 __s32 sec32;
162
163 sec32 = p->tv_sec;
164 if (put_user(sec32, &p32->tv_sec) ||
165 put_user(p->tv_nsec, &p32->tv_nsec))
166 return -EFAULT;
167 return 0;
168}
169
170
171STATIC int
172xfs_fsbulkstat_one_fmt_compat(
173 struct xfs_ibulk *breq,
174 const struct xfs_bulkstat *bstat)
175{
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);
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) ||
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) ||
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) ||
199 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
200 put_user(buffer->bs_forkoff, &p32->bs_forkoff) ||
201 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
202 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
203 put_user(buffer->bs_aextents, &p32->bs_aextents))
204 return -EFAULT;
205
206 return xfs_ibulk_advance(breq, sizeof(struct compat_xfs_bstat));
207}
208
209
210STATIC int
211xfs_compat_ioc_fsbulkstat(
212 xfs_mount_t *mp,
213 unsigned int cmd,
214 struct compat_xfs_fsop_bulkreq __user *p32)
215{
216 u32 addr;
217 struct xfs_fsop_bulkreq bulkreq;
218 struct xfs_ibulk breq = {
219 .mp = mp,
220 .ocount = 0,
221 };
222 xfs_ino_t lastino;
223 int error;
224
225
226
227
228
229
230
231 inumbers_fmt_pf inumbers_func = xfs_fsinumbers_fmt_compat;
232 bulkstat_one_fmt_pf bs_one_func = xfs_fsbulkstat_one_fmt_compat;
233
234#ifdef CONFIG_X86_X32
235 if (in_x32_syscall()) {
236
237
238
239
240
241
242
243
244 inumbers_func = xfs_fsinumbers_fmt;
245 bs_one_func = xfs_fsbulkstat_one_fmt;
246 }
247#endif
248
249
250
251
252 if (!capable(CAP_SYS_ADMIN))
253 return -EPERM;
254
255 if (XFS_FORCED_SHUTDOWN(mp))
256 return -EIO;
257
258 if (get_user(addr, &p32->lastip))
259 return -EFAULT;
260 bulkreq.lastip = compat_ptr(addr);
261 if (get_user(bulkreq.icount, &p32->icount) ||
262 get_user(addr, &p32->ubuffer))
263 return -EFAULT;
264 bulkreq.ubuffer = compat_ptr(addr);
265 if (get_user(addr, &p32->ocount))
266 return -EFAULT;
267 bulkreq.ocount = compat_ptr(addr);
268
269 if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64)))
270 return -EFAULT;
271
272 if (bulkreq.icount <= 0)
273 return -EINVAL;
274
275 if (bulkreq.ubuffer == NULL)
276 return -EINVAL;
277
278 breq.ubuffer = bulkreq.ubuffer;
279 breq.icount = bulkreq.icount;
280
281
282
283
284
285
286
287
288
289
290
291
292 if (cmd == XFS_IOC_FSINUMBERS_32) {
293 breq.startino = lastino ? lastino + 1 : 0;
294 error = xfs_inumbers(&breq, inumbers_func);
295 lastino = breq.startino - 1;
296 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
297 breq.startino = lastino;
298 breq.icount = 1;
299 error = xfs_bulkstat_one(&breq, bs_one_func);
300 lastino = breq.startino;
301 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
302 breq.startino = lastino ? lastino + 1 : 0;
303 error = xfs_bulkstat(&breq, bs_one_func);
304 lastino = breq.startino - 1;
305 } else {
306 error = -EINVAL;
307 }
308 if (error)
309 return error;
310
311 if (bulkreq.lastip != NULL &&
312 copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t)))
313 return -EFAULT;
314
315 if (bulkreq.ocount != NULL &&
316 copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32)))
317 return -EFAULT;
318
319 return 0;
320}
321
322STATIC int
323xfs_compat_handlereq_copyin(
324 xfs_fsop_handlereq_t *hreq,
325 compat_xfs_fsop_handlereq_t __user *arg32)
326{
327 compat_xfs_fsop_handlereq_t hreq32;
328
329 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
330 return -EFAULT;
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;
341}
342
343STATIC struct dentry *
344xfs_compat_handlereq_to_dentry(
345 struct file *parfilp,
346 compat_xfs_fsop_handlereq_t *hreq)
347{
348 return xfs_handle_to_dentry(parfilp,
349 compat_ptr(hreq->ihandle), hreq->ihandlen);
350}
351
352STATIC int
353xfs_compat_attrlist_by_handle(
354 struct file *parfilp,
355 compat_xfs_fsop_attrlist_handlereq_t __user *p)
356{
357 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
358 struct dentry *dentry;
359 int error;
360
361 if (!capable(CAP_SYS_ADMIN))
362 return -EPERM;
363 if (copy_from_user(&al_hreq, p, sizeof(al_hreq)))
364 return -EFAULT;
365
366 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
367 if (IS_ERR(dentry))
368 return PTR_ERR(dentry);
369
370 error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)),
371 compat_ptr(al_hreq.buffer), al_hreq.buflen,
372 al_hreq.flags, &p->pos);
373 dput(dentry);
374 return error;
375}
376
377STATIC int
378xfs_compat_attrmulti_by_handle(
379 struct file *parfilp,
380 void __user *arg)
381{
382 int error;
383 compat_xfs_attr_multiop_t *ops;
384 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
385 struct dentry *dentry;
386 unsigned int i, size;
387
388 if (!capable(CAP_SYS_ADMIN))
389 return -EPERM;
390 if (copy_from_user(&am_hreq, arg,
391 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
392 return -EFAULT;
393
394
395 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
396 return -E2BIG;
397
398 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
399 if (IS_ERR(dentry))
400 return PTR_ERR(dentry);
401
402 error = -E2BIG;
403 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
404 if (!size || size > 16 * PAGE_SIZE)
405 goto out_dput;
406
407 ops = memdup_user(compat_ptr(am_hreq.ops), size);
408 if (IS_ERR(ops)) {
409 error = PTR_ERR(ops);
410 goto out_dput;
411 }
412
413 error = 0;
414 for (i = 0; i < am_hreq.opcount; i++) {
415 ops[i].am_error = xfs_ioc_attrmulti_one(parfilp,
416 d_inode(dentry), ops[i].am_opcode,
417 compat_ptr(ops[i].am_attrname),
418 compat_ptr(ops[i].am_attrvalue),
419 &ops[i].am_length, ops[i].am_flags);
420 }
421
422 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
423 error = -EFAULT;
424
425 kfree(ops);
426 out_dput:
427 dput(dentry);
428 return error;
429}
430
431long
432xfs_file_compat_ioctl(
433 struct file *filp,
434 unsigned cmd,
435 unsigned long p)
436{
437 struct inode *inode = file_inode(filp);
438 struct xfs_inode *ip = XFS_I(inode);
439 struct xfs_mount *mp = ip->i_mount;
440 void __user *arg = compat_ptr(p);
441 int error;
442
443 trace_xfs_file_compat_ioctl(ip);
444
445 switch (cmd) {
446#if defined(BROKEN_X86_ALIGNMENT)
447 case XFS_IOC_ALLOCSP_32:
448 case XFS_IOC_FREESP_32:
449 case XFS_IOC_ALLOCSP64_32:
450 case XFS_IOC_FREESP64_32: {
451 struct xfs_flock64 bf;
452
453 if (xfs_compat_flock64_copyin(&bf, arg))
454 return -EFAULT;
455 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
456 return xfs_ioc_space(filp, &bf);
457 }
458 case XFS_IOC_FSGEOMETRY_V1_32:
459 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
460 case XFS_IOC_FSGROWFSDATA_32: {
461 struct xfs_growfs_data in;
462
463 if (xfs_compat_growfs_data_copyin(&in, arg))
464 return -EFAULT;
465 error = mnt_want_write_file(filp);
466 if (error)
467 return error;
468 error = xfs_growfs_data(mp, &in);
469 mnt_drop_write_file(filp);
470 return error;
471 }
472 case XFS_IOC_FSGROWFSRT_32: {
473 struct xfs_growfs_rt in;
474
475 if (xfs_compat_growfs_rt_copyin(&in, arg))
476 return -EFAULT;
477 error = mnt_want_write_file(filp);
478 if (error)
479 return error;
480 error = xfs_growfs_rt(mp, &in);
481 mnt_drop_write_file(filp);
482 return error;
483 }
484#endif
485
486 case XFS_IOC_GETXFLAGS_32:
487 case XFS_IOC_SETXFLAGS_32:
488 case XFS_IOC_GETVERSION_32:
489 cmd = _NATIVE_IOC(cmd, long);
490 return xfs_file_ioctl(filp, cmd, p);
491 case XFS_IOC_SWAPEXT_32: {
492 struct xfs_swapext sxp;
493 struct compat_xfs_swapext __user *sxu = arg;
494
495
496 if (copy_from_user(&sxp, sxu,
497 offsetof(struct xfs_swapext, sx_stat)) ||
498 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
499 return -EFAULT;
500 error = mnt_want_write_file(filp);
501 if (error)
502 return error;
503 error = xfs_ioc_swapext(&sxp);
504 mnt_drop_write_file(filp);
505 return error;
506 }
507 case XFS_IOC_FSBULKSTAT_32:
508 case XFS_IOC_FSBULKSTAT_SINGLE_32:
509 case XFS_IOC_FSINUMBERS_32:
510 return xfs_compat_ioc_fsbulkstat(mp, cmd, arg);
511 case XFS_IOC_FD_TO_HANDLE_32:
512 case XFS_IOC_PATH_TO_HANDLE_32:
513 case XFS_IOC_PATH_TO_FSHANDLE_32: {
514 struct xfs_fsop_handlereq hreq;
515
516 if (xfs_compat_handlereq_copyin(&hreq, arg))
517 return -EFAULT;
518 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
519 return xfs_find_handle(cmd, &hreq);
520 }
521 case XFS_IOC_OPEN_BY_HANDLE_32: {
522 struct xfs_fsop_handlereq hreq;
523
524 if (xfs_compat_handlereq_copyin(&hreq, arg))
525 return -EFAULT;
526 return xfs_open_by_handle(filp, &hreq);
527 }
528 case XFS_IOC_READLINK_BY_HANDLE_32: {
529 struct xfs_fsop_handlereq hreq;
530
531 if (xfs_compat_handlereq_copyin(&hreq, arg))
532 return -EFAULT;
533 return xfs_readlink_by_handle(filp, &hreq);
534 }
535 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
536 return xfs_compat_attrlist_by_handle(filp, arg);
537 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
538 return xfs_compat_attrmulti_by_handle(filp, arg);
539 default:
540
541 return xfs_file_ioctl(filp, cmd, (unsigned long)arg);
542 }
543}
544