2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * 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.
14 * 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
18 #include <linux/compat.h>
19 #include <linux/ioctl.h>
20 #include <linux/mount.h>
21 #include <linux/slab.h>
22 #include <asm/uaccess.h>
28 #include "xfs_trans.h"
31 #include "xfs_mount.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_vnode.h"
34 #include "xfs_dinode.h"
35 #include "xfs_inode.h"
36 #include "xfs_itable.h"
37 #include "xfs_error.h"
38 #include "xfs_dfrag.h"
39 #include "xfs_vnodeops.h"
40 #include "xfs_fsops.h"
41 #include "xfs_alloc.h"
42 #include "xfs_rtalloc.h"
44 #include "xfs_ioctl.h"
45 #include "xfs_ioctl32.h"
46 #include "xfs_trace.h"
48 #define _NATIVE_IOC(cmd, type) \
49 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
51 #ifdef BROKEN_X86_ALIGNMENT
53 xfs_compat_flock64_copyin(
55 compat_xfs_flock64_t __user *arg32)
57 if (get_user(bf->l_type, &arg32->l_type) ||
58 get_user(bf->l_whence, &arg32->l_whence) ||
59 get_user(bf->l_start, &arg32->l_start) ||
60 get_user(bf->l_len, &arg32->l_len) ||
61 get_user(bf->l_sysid, &arg32->l_sysid) ||
62 get_user(bf->l_pid, &arg32->l_pid) ||
63 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
64 return -XFS_ERROR(EFAULT);
69 xfs_compat_ioc_fsgeometry_v1(
71 compat_xfs_fsop_geom_v1_t __user *arg32)
73 xfs_fsop_geom_t fsgeo;
76 error = xfs_fs_geometry(mp, &fsgeo, 3);
79 /* The 32-bit variant simply has some padding at the end */
80 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
81 return -XFS_ERROR(EFAULT);
86 xfs_compat_growfs_data_copyin(
87 struct xfs_growfs_data *in,
88 compat_xfs_growfs_data_t __user *arg32)
90 if (get_user(in->newblocks, &arg32->newblocks) ||
91 get_user(in->imaxpct, &arg32->imaxpct))
92 return -XFS_ERROR(EFAULT);
97 xfs_compat_growfs_rt_copyin(
98 struct xfs_growfs_rt *in,
99 compat_xfs_growfs_rt_t __user *arg32)
101 if (get_user(in->newblocks, &arg32->newblocks) ||
102 get_user(in->extsize, &arg32->extsize))
103 return -XFS_ERROR(EFAULT);
108 xfs_inumbers_fmt_compat(
109 void __user *ubuffer,
110 const xfs_inogrp_t *buffer,
114 compat_xfs_inogrp_t __user *p32 = ubuffer;
117 for (i = 0; i < count; i++) {
118 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
119 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
120 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
121 return -XFS_ERROR(EFAULT);
123 *written = count * sizeof(*p32);
128 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
129 #endif /* BROKEN_X86_ALIGNMENT */
132 xfs_ioctl32_bstime_copyin(
133 xfs_bstime_t *bstime,
134 compat_xfs_bstime_t __user *bstime32)
136 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
138 if (get_user(sec32, &bstime32->tv_sec) ||
139 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
140 return -XFS_ERROR(EFAULT);
141 bstime->tv_sec = sec32;
145 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
147 xfs_ioctl32_bstat_copyin(
149 compat_xfs_bstat_t __user *bstat32)
151 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
152 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
153 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
154 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
155 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
156 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
157 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
158 get_user(bstat->bs_size, &bstat32->bs_size) ||
159 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
160 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
161 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
162 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
163 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
164 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
165 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
166 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
167 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
168 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
169 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
170 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
171 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
172 return -XFS_ERROR(EFAULT);
176 /* XFS_IOC_FSBULKSTAT and friends */
179 xfs_bstime_store_compat(
180 compat_xfs_bstime_t __user *p32,
181 const xfs_bstime_t *p)
186 if (put_user(sec32, &p32->tv_sec) ||
187 put_user(p->tv_nsec, &p32->tv_nsec))
188 return -XFS_ERROR(EFAULT);
192 /* Return 0 on success or positive error (to xfs_bulkstat()) */
194 xfs_bulkstat_one_fmt_compat(
195 void __user *ubuffer,
198 const xfs_bstat_t *buffer)
200 compat_xfs_bstat_t __user *p32 = ubuffer;
202 if (ubsize < sizeof(*p32))
203 return XFS_ERROR(ENOMEM);
205 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
206 put_user(buffer->bs_mode, &p32->bs_mode) ||
207 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
208 put_user(buffer->bs_uid, &p32->bs_uid) ||
209 put_user(buffer->bs_gid, &p32->bs_gid) ||
210 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
211 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
212 put_user(buffer->bs_size, &p32->bs_size) ||
213 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
214 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
215 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
216 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
217 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
218 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
219 put_user(buffer->bs_extents, &p32->bs_extents) ||
220 put_user(buffer->bs_gen, &p32->bs_gen) ||
221 put_user(buffer->bs_projid, &p32->bs_projid) ||
222 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
223 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
224 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
225 put_user(buffer->bs_aextents, &p32->bs_aextents))
226 return XFS_ERROR(EFAULT);
228 *ubused = sizeof(*p32);
233 xfs_bulkstat_one_compat(
234 xfs_mount_t *mp, /* mount point for filesystem */
235 xfs_ino_t ino, /* inode number to get data for */
236 void __user *buffer, /* buffer to place output in */
237 int ubsize, /* size of buffer */
238 int *ubused, /* bytes used by me */
239 int *stat) /* BULKSTAT_RV_... */
241 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
242 xfs_bulkstat_one_fmt_compat,
246 /* copied from xfs_ioctl.c */
248 xfs_compat_ioc_bulkstat(
251 compat_xfs_fsop_bulkreq_t __user *p32)
254 xfs_fsop_bulkreq_t bulkreq;
255 int count; /* # of records returned */
256 xfs_ino_t inlast; /* last inode number */
260 /* done = 1 if there are more stats to get and if bulkstat */
261 /* should be called again (unused here, but used in dmapi) */
263 if (!capable(CAP_SYS_ADMIN))
264 return -XFS_ERROR(EPERM);
266 if (XFS_FORCED_SHUTDOWN(mp))
267 return -XFS_ERROR(EIO);
269 if (get_user(addr, &p32->lastip))
270 return -XFS_ERROR(EFAULT);
271 bulkreq.lastip = compat_ptr(addr);
272 if (get_user(bulkreq.icount, &p32->icount) ||
273 get_user(addr, &p32->ubuffer))
274 return -XFS_ERROR(EFAULT);
275 bulkreq.ubuffer = compat_ptr(addr);
276 if (get_user(addr, &p32->ocount))
277 return -XFS_ERROR(EFAULT);
278 bulkreq.ocount = compat_ptr(addr);
280 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
281 return -XFS_ERROR(EFAULT);
283 if ((count = bulkreq.icount) <= 0)
284 return -XFS_ERROR(EINVAL);
286 if (bulkreq.ubuffer == NULL)
287 return -XFS_ERROR(EINVAL);
289 if (cmd == XFS_IOC_FSINUMBERS_32) {
290 error = xfs_inumbers(mp, &inlast, &count,
291 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
292 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
295 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
296 sizeof(compat_xfs_bstat_t), 0, &res);
297 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
298 error = xfs_bulkstat(mp, &inlast, &count,
299 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
300 bulkreq.ubuffer, &done);
302 error = XFS_ERROR(EINVAL);
306 if (bulkreq.ocount != NULL) {
307 if (copy_to_user(bulkreq.lastip, &inlast,
309 return -XFS_ERROR(EFAULT);
311 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
312 return -XFS_ERROR(EFAULT);
319 xfs_compat_handlereq_copyin(
320 xfs_fsop_handlereq_t *hreq,
321 compat_xfs_fsop_handlereq_t __user *arg32)
323 compat_xfs_fsop_handlereq_t hreq32;
325 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
326 return -XFS_ERROR(EFAULT);
328 hreq->fd = hreq32.fd;
329 hreq->path = compat_ptr(hreq32.path);
330 hreq->oflags = hreq32.oflags;
331 hreq->ihandle = compat_ptr(hreq32.ihandle);
332 hreq->ihandlen = hreq32.ihandlen;
333 hreq->ohandle = compat_ptr(hreq32.ohandle);
334 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
339 STATIC struct dentry *
340 xfs_compat_handlereq_to_dentry(
341 struct file *parfilp,
342 compat_xfs_fsop_handlereq_t *hreq)
344 return xfs_handle_to_dentry(parfilp,
345 compat_ptr(hreq->ihandle), hreq->ihandlen);
349 xfs_compat_attrlist_by_handle(
350 struct file *parfilp,
354 attrlist_cursor_kern_t *cursor;
355 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
356 struct dentry *dentry;
359 if (!capable(CAP_SYS_ADMIN))
360 return -XFS_ERROR(EPERM);
361 if (copy_from_user(&al_hreq, arg,
362 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
363 return -XFS_ERROR(EFAULT);
364 if (al_hreq.buflen > XATTR_LIST_MAX)
365 return -XFS_ERROR(EINVAL);
368 * Reject flags, only allow namespaces.
370 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
371 return -XFS_ERROR(EINVAL);
373 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
375 return PTR_ERR(dentry);
378 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
382 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
383 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
384 al_hreq.flags, cursor);
388 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
399 xfs_compat_attrmulti_by_handle(
400 struct file *parfilp,
404 compat_xfs_attr_multiop_t *ops;
405 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
406 struct dentry *dentry;
407 unsigned int i, size;
408 unsigned char *attr_name;
410 if (!capable(CAP_SYS_ADMIN))
411 return -XFS_ERROR(EPERM);
412 if (copy_from_user(&am_hreq, arg,
413 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
414 return -XFS_ERROR(EFAULT);
417 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
420 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
422 return PTR_ERR(dentry);
425 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
426 if (!size || size > 16 * PAGE_SIZE)
429 ops = memdup_user(compat_ptr(am_hreq.ops), size);
431 error = PTR_ERR(ops);
435 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
440 for (i = 0; i < am_hreq.opcount; i++) {
441 ops[i].am_error = strncpy_from_user((char *)attr_name,
442 compat_ptr(ops[i].am_attrname),
444 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
446 if (ops[i].am_error < 0)
449 switch (ops[i].am_opcode) {
451 ops[i].am_error = xfs_attrmulti_attr_get(
452 dentry->d_inode, attr_name,
453 compat_ptr(ops[i].am_attrvalue),
454 &ops[i].am_length, ops[i].am_flags);
457 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
460 ops[i].am_error = xfs_attrmulti_attr_set(
461 dentry->d_inode, attr_name,
462 compat_ptr(ops[i].am_attrvalue),
463 ops[i].am_length, ops[i].am_flags);
464 mnt_drop_write(parfilp->f_path.mnt);
467 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
470 ops[i].am_error = xfs_attrmulti_attr_remove(
471 dentry->d_inode, attr_name,
473 mnt_drop_write(parfilp->f_path.mnt);
476 ops[i].am_error = EINVAL;
480 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
481 error = XFS_ERROR(EFAULT);
492 xfs_compat_fssetdm_by_handle(
493 struct file *parfilp,
497 struct fsdmidata fsd;
498 compat_xfs_fsop_setdm_handlereq_t dmhreq;
499 struct dentry *dentry;
501 if (!capable(CAP_MKNOD))
502 return -XFS_ERROR(EPERM);
503 if (copy_from_user(&dmhreq, arg,
504 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
505 return -XFS_ERROR(EFAULT);
507 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
509 return PTR_ERR(dentry);
511 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
512 error = -XFS_ERROR(EPERM);
516 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
517 error = -XFS_ERROR(EFAULT);
521 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
530 xfs_file_compat_ioctl(
535 struct inode *inode = filp->f_path.dentry->d_inode;
536 struct xfs_inode *ip = XFS_I(inode);
537 struct xfs_mount *mp = ip->i_mount;
538 void __user *arg = (void __user *)p;
542 if (filp->f_mode & FMODE_NOCMTIME)
545 trace_xfs_file_compat_ioctl(ip);
548 /* No size or alignment issues on any arch */
549 case XFS_IOC_DIOINFO:
550 case XFS_IOC_FSGEOMETRY:
551 case XFS_IOC_FSGETXATTR:
552 case XFS_IOC_FSSETXATTR:
553 case XFS_IOC_FSGETXATTRA:
554 case XFS_IOC_FSSETDM:
555 case XFS_IOC_GETBMAP:
556 case XFS_IOC_GETBMAPA:
557 case XFS_IOC_GETBMAPX:
558 case XFS_IOC_FSCOUNTS:
559 case XFS_IOC_SET_RESBLKS:
560 case XFS_IOC_GET_RESBLKS:
561 case XFS_IOC_FSGROWFSLOG:
562 case XFS_IOC_GOINGDOWN:
563 case XFS_IOC_ERROR_INJECTION:
564 case XFS_IOC_ERROR_CLEARALL:
565 return xfs_file_ioctl(filp, cmd, p);
566 #ifndef BROKEN_X86_ALIGNMENT
567 /* These are handled fine if no alignment issues */
568 case XFS_IOC_ALLOCSP:
571 case XFS_IOC_UNRESVSP:
572 case XFS_IOC_ALLOCSP64:
573 case XFS_IOC_FREESP64:
574 case XFS_IOC_RESVSP64:
575 case XFS_IOC_UNRESVSP64:
576 case XFS_IOC_FSGEOMETRY_V1:
577 case XFS_IOC_FSGROWFSDATA:
578 case XFS_IOC_FSGROWFSRT:
579 case XFS_IOC_ZERO_RANGE:
580 return xfs_file_ioctl(filp, cmd, p);
582 case XFS_IOC_ALLOCSP_32:
583 case XFS_IOC_FREESP_32:
584 case XFS_IOC_ALLOCSP64_32:
585 case XFS_IOC_FREESP64_32:
586 case XFS_IOC_RESVSP_32:
587 case XFS_IOC_UNRESVSP_32:
588 case XFS_IOC_RESVSP64_32:
589 case XFS_IOC_UNRESVSP64_32:
590 case XFS_IOC_ZERO_RANGE_32: {
591 struct xfs_flock64 bf;
593 if (xfs_compat_flock64_copyin(&bf, arg))
594 return -XFS_ERROR(EFAULT);
595 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
596 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
598 case XFS_IOC_FSGEOMETRY_V1_32:
599 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
600 case XFS_IOC_FSGROWFSDATA_32: {
601 struct xfs_growfs_data in;
603 if (xfs_compat_growfs_data_copyin(&in, arg))
604 return -XFS_ERROR(EFAULT);
605 error = xfs_growfs_data(mp, &in);
608 case XFS_IOC_FSGROWFSRT_32: {
609 struct xfs_growfs_rt in;
611 if (xfs_compat_growfs_rt_copyin(&in, arg))
612 return -XFS_ERROR(EFAULT);
613 error = xfs_growfs_rt(mp, &in);
617 /* long changes size, but xfs only copiese out 32 bits */
618 case XFS_IOC_GETXFLAGS_32:
619 case XFS_IOC_SETXFLAGS_32:
620 case XFS_IOC_GETVERSION_32:
621 cmd = _NATIVE_IOC(cmd, long);
622 return xfs_file_ioctl(filp, cmd, p);
623 case XFS_IOC_SWAPEXT_32: {
624 struct xfs_swapext sxp;
625 struct compat_xfs_swapext __user *sxu = arg;
627 /* Bulk copy in up to the sx_stat field, then copy bstat */
628 if (copy_from_user(&sxp, sxu,
629 offsetof(struct xfs_swapext, sx_stat)) ||
630 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
631 return -XFS_ERROR(EFAULT);
632 error = xfs_swapext(&sxp);
635 case XFS_IOC_FSBULKSTAT_32:
636 case XFS_IOC_FSBULKSTAT_SINGLE_32:
637 case XFS_IOC_FSINUMBERS_32:
638 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
639 case XFS_IOC_FD_TO_HANDLE_32:
640 case XFS_IOC_PATH_TO_HANDLE_32:
641 case XFS_IOC_PATH_TO_FSHANDLE_32: {
642 struct xfs_fsop_handlereq hreq;
644 if (xfs_compat_handlereq_copyin(&hreq, arg))
645 return -XFS_ERROR(EFAULT);
646 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
647 return xfs_find_handle(cmd, &hreq);
649 case XFS_IOC_OPEN_BY_HANDLE_32: {
650 struct xfs_fsop_handlereq hreq;
652 if (xfs_compat_handlereq_copyin(&hreq, arg))
653 return -XFS_ERROR(EFAULT);
654 return xfs_open_by_handle(filp, &hreq);
656 case XFS_IOC_READLINK_BY_HANDLE_32: {
657 struct xfs_fsop_handlereq hreq;
659 if (xfs_compat_handlereq_copyin(&hreq, arg))
660 return -XFS_ERROR(EFAULT);
661 return xfs_readlink_by_handle(filp, &hreq);
663 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
664 return xfs_compat_attrlist_by_handle(filp, arg);
665 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
666 return xfs_compat_attrmulti_by_handle(filp, arg);
667 case XFS_IOC_FSSETDM_BY_HANDLE_32:
668 return xfs_compat_fssetdm_by_handle(filp, arg);
670 return -XFS_ERROR(ENOIOCTLCMD);