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"
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"
37 #include "xfs_vnode.h"
38 #include "xfs_dinode.h"
39 #include "xfs_inode.h"
40 #include "xfs_itable.h"
41 #include "xfs_error.h"
42 #include "xfs_dfrag.h"
43 #include "xfs_vnodeops.h"
44 #include "xfs_fsops.h"
45 #include "xfs_alloc.h"
46 #include "xfs_rtalloc.h"
48 #include "xfs_ioctl.h"
49 #include "xfs_ioctl32.h"
50 #include "xfs_trace.h"
52 #define _NATIVE_IOC(cmd, type) \
53 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
55 #ifdef BROKEN_X86_ALIGNMENT
57 xfs_compat_flock64_copyin(
59 compat_xfs_flock64_t __user *arg32)
61 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);
73 xfs_compat_ioc_fsgeometry_v1(
75 compat_xfs_fsop_geom_v1_t __user *arg32)
77 xfs_fsop_geom_t fsgeo;
80 error = xfs_fs_geometry(mp, &fsgeo, 3);
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);
90 xfs_compat_growfs_data_copyin(
91 struct xfs_growfs_data *in,
92 compat_xfs_growfs_data_t __user *arg32)
94 if (get_user(in->newblocks, &arg32->newblocks) ||
95 get_user(in->imaxpct, &arg32->imaxpct))
96 return -XFS_ERROR(EFAULT);
101 xfs_compat_growfs_rt_copyin(
102 struct xfs_growfs_rt *in,
103 compat_xfs_growfs_rt_t __user *arg32)
105 if (get_user(in->newblocks, &arg32->newblocks) ||
106 get_user(in->extsize, &arg32->extsize))
107 return -XFS_ERROR(EFAULT);
112 xfs_inumbers_fmt_compat(
113 void __user *ubuffer,
114 const xfs_inogrp_t *buffer,
118 compat_xfs_inogrp_t __user *p32 = ubuffer;
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))
125 return -XFS_ERROR(EFAULT);
127 *written = count * sizeof(*p32);
132 #define xfs_inumbers_fmt_compat xfs_inumbers_fmt
133 #endif /* BROKEN_X86_ALIGNMENT */
136 xfs_ioctl32_bstime_copyin(
137 xfs_bstime_t *bstime,
138 compat_xfs_bstime_t __user *bstime32)
140 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
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;
149 /* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
151 xfs_ioctl32_bstat_copyin(
153 compat_xfs_bstat_t __user *bstat32)
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);
179 /* XFS_IOC_FSBULKSTAT and friends */
182 xfs_bstime_store_compat(
183 compat_xfs_bstime_t __user *p32,
184 const xfs_bstime_t *p)
189 if (put_user(sec32, &p32->tv_sec) ||
190 put_user(p->tv_nsec, &p32->tv_nsec))
191 return -XFS_ERROR(EFAULT);
195 /* Return 0 on success or positive error (to xfs_bulkstat()) */
197 xfs_bulkstat_one_fmt_compat(
198 void __user *ubuffer,
201 const xfs_bstat_t *buffer)
203 compat_xfs_bstat_t __user *p32 = ubuffer;
205 if (ubsize < sizeof(*p32))
206 return XFS_ERROR(ENOMEM);
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) ||
216 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) ||
219 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) ||
227 put_user(buffer->bs_aextents, &p32->bs_aextents))
228 return XFS_ERROR(EFAULT);
230 *ubused = sizeof(*p32);
235 xfs_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 int *ubused, /* bytes used by me */
241 int *stat) /* BULKSTAT_RV_... */
243 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
244 xfs_bulkstat_one_fmt_compat,
248 /* copied from xfs_ioctl.c */
250 xfs_compat_ioc_bulkstat(
253 compat_xfs_fsop_bulkreq_t __user *p32)
256 xfs_fsop_bulkreq_t bulkreq;
257 int count; /* # of records returned */
258 xfs_ino_t inlast; /* last inode number */
262 /* done = 1 if there are more stats to get and if bulkstat */
263 /* should be called again (unused here, but used in dmapi) */
265 if (!capable(CAP_SYS_ADMIN))
266 return -XFS_ERROR(EPERM);
268 if (XFS_FORCED_SHUTDOWN(mp))
269 return -XFS_ERROR(EIO);
271 if (get_user(addr, &p32->lastip))
272 return -XFS_ERROR(EFAULT);
273 bulkreq.lastip = compat_ptr(addr);
274 if (get_user(bulkreq.icount, &p32->icount) ||
275 get_user(addr, &p32->ubuffer))
276 return -XFS_ERROR(EFAULT);
277 bulkreq.ubuffer = compat_ptr(addr);
278 if (get_user(addr, &p32->ocount))
279 return -XFS_ERROR(EFAULT);
280 bulkreq.ocount = compat_ptr(addr);
282 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
283 return -XFS_ERROR(EFAULT);
285 if ((count = bulkreq.icount) <= 0)
286 return -XFS_ERROR(EINVAL);
288 if (bulkreq.ubuffer == NULL)
289 return -XFS_ERROR(EINVAL);
291 if (cmd == XFS_IOC_FSINUMBERS_32) {
292 error = xfs_inumbers(mp, &inlast, &count,
293 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
294 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
297 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
298 sizeof(compat_xfs_bstat_t), 0, &res);
299 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
300 error = xfs_bulkstat(mp, &inlast, &count,
301 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
302 bulkreq.ubuffer, &done);
304 error = XFS_ERROR(EINVAL);
308 if (bulkreq.ocount != NULL) {
309 if (copy_to_user(bulkreq.lastip, &inlast,
311 return -XFS_ERROR(EFAULT);
313 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
314 return -XFS_ERROR(EFAULT);
321 xfs_compat_handlereq_copyin(
322 xfs_fsop_handlereq_t *hreq,
323 compat_xfs_fsop_handlereq_t __user *arg32)
325 compat_xfs_fsop_handlereq_t hreq32;
327 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
328 return -XFS_ERROR(EFAULT);
330 hreq->fd = hreq32.fd;
331 hreq->path = compat_ptr(hreq32.path);
332 hreq->oflags = hreq32.oflags;
333 hreq->ihandle = compat_ptr(hreq32.ihandle);
334 hreq->ihandlen = hreq32.ihandlen;
335 hreq->ohandle = compat_ptr(hreq32.ohandle);
336 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
341 STATIC struct dentry *
342 xfs_compat_handlereq_to_dentry(
343 struct file *parfilp,
344 compat_xfs_fsop_handlereq_t *hreq)
346 return xfs_handle_to_dentry(parfilp,
347 compat_ptr(hreq->ihandle), hreq->ihandlen);
351 xfs_compat_attrlist_by_handle(
352 struct file *parfilp,
356 attrlist_cursor_kern_t *cursor;
357 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
358 struct dentry *dentry;
361 if (!capable(CAP_SYS_ADMIN))
362 return -XFS_ERROR(EPERM);
363 if (copy_from_user(&al_hreq, arg,
364 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
365 return -XFS_ERROR(EFAULT);
366 if (al_hreq.buflen > XATTR_LIST_MAX)
367 return -XFS_ERROR(EINVAL);
370 * Reject flags, only allow namespaces.
372 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
373 return -XFS_ERROR(EINVAL);
375 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
377 return PTR_ERR(dentry);
380 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
384 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
385 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
386 al_hreq.flags, cursor);
390 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
401 xfs_compat_attrmulti_by_handle(
402 struct file *parfilp,
406 compat_xfs_attr_multiop_t *ops;
407 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
408 struct dentry *dentry;
409 unsigned int i, size;
410 unsigned char *attr_name;
412 if (!capable(CAP_SYS_ADMIN))
413 return -XFS_ERROR(EPERM);
414 if (copy_from_user(&am_hreq, arg,
415 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
416 return -XFS_ERROR(EFAULT);
419 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
422 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
424 return PTR_ERR(dentry);
427 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
428 if (!size || size > 16 * PAGE_SIZE)
431 ops = memdup_user(compat_ptr(am_hreq.ops), size);
433 error = PTR_ERR(ops);
437 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
442 for (i = 0; i < am_hreq.opcount; i++) {
443 ops[i].am_error = strncpy_from_user((char *)attr_name,
444 compat_ptr(ops[i].am_attrname),
446 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
448 if (ops[i].am_error < 0)
451 switch (ops[i].am_opcode) {
453 ops[i].am_error = xfs_attrmulti_attr_get(
454 dentry->d_inode, attr_name,
455 compat_ptr(ops[i].am_attrvalue),
456 &ops[i].am_length, ops[i].am_flags);
459 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
462 ops[i].am_error = xfs_attrmulti_attr_set(
463 dentry->d_inode, attr_name,
464 compat_ptr(ops[i].am_attrvalue),
465 ops[i].am_length, ops[i].am_flags);
466 mnt_drop_write(parfilp->f_path.mnt);
469 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
472 ops[i].am_error = xfs_attrmulti_attr_remove(
473 dentry->d_inode, attr_name,
475 mnt_drop_write(parfilp->f_path.mnt);
478 ops[i].am_error = EINVAL;
482 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
483 error = XFS_ERROR(EFAULT);
494 xfs_compat_fssetdm_by_handle(
495 struct file *parfilp,
499 struct fsdmidata fsd;
500 compat_xfs_fsop_setdm_handlereq_t dmhreq;
501 struct dentry *dentry;
503 if (!capable(CAP_MKNOD))
504 return -XFS_ERROR(EPERM);
505 if (copy_from_user(&dmhreq, arg,
506 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
507 return -XFS_ERROR(EFAULT);
509 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
511 return PTR_ERR(dentry);
513 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
514 error = -XFS_ERROR(EPERM);
518 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
519 error = -XFS_ERROR(EFAULT);
523 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
532 xfs_file_compat_ioctl(
537 struct inode *inode = filp->f_path.dentry->d_inode;
538 struct xfs_inode *ip = XFS_I(inode);
539 struct xfs_mount *mp = ip->i_mount;
540 void __user *arg = (void __user *)p;
544 if (filp->f_mode & FMODE_NOCMTIME)
547 xfs_itrace_entry(ip);
550 /* No size or alignment issues on any arch */
551 case XFS_IOC_DIOINFO:
552 case XFS_IOC_FSGEOMETRY:
553 case XFS_IOC_FSGETXATTR:
554 case XFS_IOC_FSSETXATTR:
555 case XFS_IOC_FSGETXATTRA:
556 case XFS_IOC_FSSETDM:
557 case XFS_IOC_GETBMAP:
558 case XFS_IOC_GETBMAPA:
559 case XFS_IOC_GETBMAPX:
560 case XFS_IOC_FSCOUNTS:
561 case XFS_IOC_SET_RESBLKS:
562 case XFS_IOC_GET_RESBLKS:
563 case XFS_IOC_FSGROWFSLOG:
564 case XFS_IOC_GOINGDOWN:
565 case XFS_IOC_ERROR_INJECTION:
566 case XFS_IOC_ERROR_CLEARALL:
567 return xfs_file_ioctl(filp, cmd, p);
568 #ifndef BROKEN_X86_ALIGNMENT
569 /* These are handled fine if no alignment issues */
570 case XFS_IOC_ALLOCSP:
573 case XFS_IOC_UNRESVSP:
574 case XFS_IOC_ALLOCSP64:
575 case XFS_IOC_FREESP64:
576 case XFS_IOC_RESVSP64:
577 case XFS_IOC_UNRESVSP64:
578 case XFS_IOC_FSGEOMETRY_V1:
579 case XFS_IOC_FSGROWFSDATA:
580 case XFS_IOC_FSGROWFSRT:
581 return xfs_file_ioctl(filp, cmd, p);
583 case XFS_IOC_ALLOCSP_32:
584 case XFS_IOC_FREESP_32:
585 case XFS_IOC_ALLOCSP64_32:
586 case XFS_IOC_FREESP64_32:
587 case XFS_IOC_RESVSP_32:
588 case XFS_IOC_UNRESVSP_32:
589 case XFS_IOC_RESVSP64_32:
590 case XFS_IOC_UNRESVSP64_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);