2 * Copyright (c) 2000-2005 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
20 #include "xfs_shared.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
26 #include "xfs_mount.h"
27 #include "xfs_inode.h"
28 #include "xfs_ioctl.h"
29 #include "xfs_alloc.h"
30 #include "xfs_rtalloc.h"
31 #include "xfs_itable.h"
32 #include "xfs_error.h"
35 #include "xfs_bmap_util.h"
36 #include "xfs_fsops.h"
37 #include "xfs_discard.h"
38 #include "xfs_quota.h"
39 #include "xfs_export.h"
40 #include "xfs_trace.h"
41 #include "xfs_icache.h"
42 #include "xfs_symlink.h"
43 #include "xfs_dinode.h"
44 #include "xfs_trans.h"
46 #include <linux/capability.h>
47 #include <linux/dcache.h>
48 #include <linux/mount.h>
49 #include <linux/namei.h>
50 #include <linux/pagemap.h>
51 #include <linux/slab.h>
52 #include <linux/exportfs.h>
55 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
56 * a file or fs handle.
58 * XFS_IOC_PATH_TO_FSHANDLE
59 * returns fs handle for a mount point or path within that mount point
60 * XFS_IOC_FD_TO_HANDLE
61 * returns full handle for a FD opened in user space
62 * XFS_IOC_PATH_TO_HANDLE
63 * returns full handle for a path
68 xfs_fsop_handlereq_t *hreq)
78 if (cmd == XFS_IOC_FD_TO_HANDLE) {
82 inode = file_inode(f.file);
84 error = user_lpath((const char __user *)hreq->path, &path);
87 inode = path.dentry->d_inode;
92 * We can only generate handles for inodes residing on a XFS filesystem,
93 * and only for regular files, directories or symbolic links.
96 if (inode->i_sb->s_magic != XFS_SB_MAGIC)
100 if (!S_ISREG(inode->i_mode) &&
101 !S_ISDIR(inode->i_mode) &&
102 !S_ISLNK(inode->i_mode))
106 memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
108 if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
110 * This handle only contains an fsid, zero the rest.
112 memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
113 hsize = sizeof(xfs_fsid_t);
117 lock_mode = xfs_ilock_map_shared(ip);
118 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
119 sizeof(handle.ha_fid.fid_len);
120 handle.ha_fid.fid_pad = 0;
121 handle.ha_fid.fid_gen = ip->i_d.di_gen;
122 handle.ha_fid.fid_ino = ip->i_ino;
123 xfs_iunlock_map_shared(ip, lock_mode);
125 hsize = XFS_HSIZE(handle);
129 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
130 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
136 if (cmd == XFS_IOC_FD_TO_HANDLE)
144 * No need to do permission checks on the various pathname components
145 * as the handle operations are privileged.
148 xfs_handle_acceptable(
150 struct dentry *dentry)
156 * Convert userspace handle data into a dentry.
159 xfs_handle_to_dentry(
160 struct file *parfilp,
161 void __user *uhandle,
165 struct xfs_fid64 fid;
168 * Only allow handle opens under a directory.
170 if (!S_ISDIR(file_inode(parfilp)->i_mode))
171 return ERR_PTR(-ENOTDIR);
173 if (hlen != sizeof(xfs_handle_t))
174 return ERR_PTR(-EINVAL);
175 if (copy_from_user(&handle, uhandle, hlen))
176 return ERR_PTR(-EFAULT);
177 if (handle.ha_fid.fid_len !=
178 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
179 return ERR_PTR(-EINVAL);
181 memset(&fid, 0, sizeof(struct fid));
182 fid.ino = handle.ha_fid.fid_ino;
183 fid.gen = handle.ha_fid.fid_gen;
185 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
186 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
187 xfs_handle_acceptable, NULL);
190 STATIC struct dentry *
191 xfs_handlereq_to_dentry(
192 struct file *parfilp,
193 xfs_fsop_handlereq_t *hreq)
195 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
200 struct file *parfilp,
201 xfs_fsop_handlereq_t *hreq)
203 const struct cred *cred = current_cred();
209 struct dentry *dentry;
213 if (!capable(CAP_SYS_ADMIN))
214 return -XFS_ERROR(EPERM);
216 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
218 return PTR_ERR(dentry);
219 inode = dentry->d_inode;
221 /* Restrict xfs_open_by_handle to directories & regular files. */
222 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
223 error = -XFS_ERROR(EPERM);
227 #if BITS_PER_LONG != 32
228 hreq->oflags |= O_LARGEFILE;
231 permflag = hreq->oflags;
232 fmode = OPEN_FMODE(permflag);
233 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
234 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
235 error = -XFS_ERROR(EPERM);
239 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
240 error = -XFS_ERROR(EACCES);
244 /* Can't write directories. */
245 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
246 error = -XFS_ERROR(EISDIR);
250 fd = get_unused_fd_flags(0);
256 path.mnt = parfilp->f_path.mnt;
257 path.dentry = dentry;
258 filp = dentry_open(&path, hreq->oflags, cred);
262 return PTR_ERR(filp);
265 if (S_ISREG(inode->i_mode)) {
266 filp->f_flags |= O_NOATIME;
267 filp->f_mode |= FMODE_NOCMTIME;
270 fd_install(fd, filp);
279 * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's
280 * unused first argument.
295 if (len > (unsigned) buflen)
297 if (copy_to_user(buffer, link, len))
305 xfs_readlink_by_handle(
306 struct file *parfilp,
307 xfs_fsop_handlereq_t *hreq)
309 struct dentry *dentry;
314 if (!capable(CAP_SYS_ADMIN))
315 return -XFS_ERROR(EPERM);
317 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
319 return PTR_ERR(dentry);
321 /* Restrict this handle operation to symlinks only. */
322 if (!S_ISLNK(dentry->d_inode->i_mode)) {
323 error = -XFS_ERROR(EINVAL);
327 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
328 error = -XFS_ERROR(EFAULT);
332 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
334 error = -XFS_ERROR(ENOMEM);
338 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
341 error = do_readlink(hreq->ohandle, olen, link);
358 xfs_mount_t *mp = ip->i_mount;
362 if (!capable(CAP_SYS_ADMIN))
363 return XFS_ERROR(EPERM);
365 if (XFS_FORCED_SHUTDOWN(mp))
366 return XFS_ERROR(EIO);
368 tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS);
369 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
371 xfs_trans_cancel(tp, 0);
374 xfs_ilock(ip, XFS_ILOCK_EXCL);
375 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
377 ip->i_d.di_dmevmask = evmask;
378 ip->i_d.di_dmstate = state;
380 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
381 error = xfs_trans_commit(tp, 0);
387 xfs_fssetdm_by_handle(
388 struct file *parfilp,
392 struct fsdmidata fsd;
393 xfs_fsop_setdm_handlereq_t dmhreq;
394 struct dentry *dentry;
396 if (!capable(CAP_MKNOD))
397 return -XFS_ERROR(EPERM);
398 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
399 return -XFS_ERROR(EFAULT);
401 error = mnt_want_write_file(parfilp);
405 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
406 if (IS_ERR(dentry)) {
407 mnt_drop_write_file(parfilp);
408 return PTR_ERR(dentry);
411 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
412 error = -XFS_ERROR(EPERM);
416 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
417 error = -XFS_ERROR(EFAULT);
421 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
425 mnt_drop_write_file(parfilp);
431 xfs_attrlist_by_handle(
432 struct file *parfilp,
436 attrlist_cursor_kern_t *cursor;
437 xfs_fsop_attrlist_handlereq_t al_hreq;
438 struct dentry *dentry;
441 if (!capable(CAP_SYS_ADMIN))
442 return -XFS_ERROR(EPERM);
443 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
444 return -XFS_ERROR(EFAULT);
445 if (al_hreq.buflen > XATTR_LIST_MAX)
446 return -XFS_ERROR(EINVAL);
449 * Reject flags, only allow namespaces.
451 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
452 return -XFS_ERROR(EINVAL);
454 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
456 return PTR_ERR(dentry);
458 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
462 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
463 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
464 al_hreq.flags, cursor);
468 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
479 xfs_attrmulti_attr_get(
482 unsigned char __user *ubuf,
489 if (*len > XATTR_SIZE_MAX)
491 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
495 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
499 if (copy_to_user(ubuf, kbuf, *len))
508 xfs_attrmulti_attr_set(
511 const unsigned char __user *ubuf,
518 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
520 if (len > XATTR_SIZE_MAX)
523 kbuf = memdup_user(ubuf, len);
525 return PTR_ERR(kbuf);
527 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
533 xfs_attrmulti_attr_remove(
538 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
540 return xfs_attr_remove(XFS_I(inode), name, flags);
544 xfs_attrmulti_by_handle(
545 struct file *parfilp,
549 xfs_attr_multiop_t *ops;
550 xfs_fsop_attrmulti_handlereq_t am_hreq;
551 struct dentry *dentry;
552 unsigned int i, size;
553 unsigned char *attr_name;
555 if (!capable(CAP_SYS_ADMIN))
556 return -XFS_ERROR(EPERM);
557 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
558 return -XFS_ERROR(EFAULT);
561 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
564 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
566 return PTR_ERR(dentry);
569 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
570 if (!size || size > 16 * PAGE_SIZE)
573 ops = memdup_user(am_hreq.ops, size);
575 error = PTR_ERR(ops);
579 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
584 for (i = 0; i < am_hreq.opcount; i++) {
585 ops[i].am_error = strncpy_from_user((char *)attr_name,
586 ops[i].am_attrname, MAXNAMELEN);
587 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
589 if (ops[i].am_error < 0)
592 switch (ops[i].am_opcode) {
594 ops[i].am_error = xfs_attrmulti_attr_get(
595 dentry->d_inode, attr_name,
596 ops[i].am_attrvalue, &ops[i].am_length,
600 ops[i].am_error = mnt_want_write_file(parfilp);
603 ops[i].am_error = xfs_attrmulti_attr_set(
604 dentry->d_inode, attr_name,
605 ops[i].am_attrvalue, ops[i].am_length,
607 mnt_drop_write_file(parfilp);
610 ops[i].am_error = mnt_want_write_file(parfilp);
613 ops[i].am_error = xfs_attrmulti_attr_remove(
614 dentry->d_inode, attr_name,
616 mnt_drop_write_file(parfilp);
619 ops[i].am_error = EINVAL;
623 if (copy_to_user(am_hreq.ops, ops, size))
624 error = XFS_ERROR(EFAULT);
636 struct xfs_inode *ip,
643 struct xfs_mount *mp = ip->i_mount;
644 struct xfs_trans *tp;
646 bool setprealloc = false;
647 bool clrprealloc = false;
651 * Only allow the sys admin to reserve space unless
652 * unwritten extents are enabled.
654 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
655 !capable(CAP_SYS_ADMIN))
656 return -XFS_ERROR(EPERM);
658 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
659 return -XFS_ERROR(EPERM);
661 if (!(filp->f_mode & FMODE_WRITE))
662 return -XFS_ERROR(EBADF);
664 if (!S_ISREG(inode->i_mode))
665 return -XFS_ERROR(EINVAL);
667 error = mnt_want_write_file(filp);
671 xfs_ilock(ip, XFS_IOLOCK_EXCL);
673 switch (bf->l_whence) {
677 bf->l_start += filp->f_pos;
680 bf->l_start += XFS_ISIZE(ip);
683 error = XFS_ERROR(EINVAL);
688 * length of <= 0 for resv/unresv/zero is invalid. length for
689 * alloc/free is ignored completely and we have no idea what userspace
690 * might have set it to, so set it to zero to allow range
694 case XFS_IOC_ZERO_RANGE:
696 case XFS_IOC_RESVSP64:
697 case XFS_IOC_UNRESVSP:
698 case XFS_IOC_UNRESVSP64:
699 if (bf->l_len <= 0) {
700 error = XFS_ERROR(EINVAL);
709 if (bf->l_start < 0 ||
710 bf->l_start > mp->m_super->s_maxbytes ||
711 bf->l_start + bf->l_len < 0 ||
712 bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) {
713 error = XFS_ERROR(EINVAL);
718 case XFS_IOC_ZERO_RANGE:
719 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
724 case XFS_IOC_RESVSP64:
725 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
730 case XFS_IOC_UNRESVSP:
731 case XFS_IOC_UNRESVSP64:
732 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
734 case XFS_IOC_ALLOCSP:
735 case XFS_IOC_ALLOCSP64:
737 case XFS_IOC_FREESP64:
738 if (bf->l_start > XFS_ISIZE(ip)) {
739 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
740 bf->l_start - XFS_ISIZE(ip), 0);
745 iattr.ia_valid = ATTR_SIZE;
746 iattr.ia_size = bf->l_start;
748 error = xfs_setattr_size(ip, &iattr);
754 error = XFS_ERROR(EINVAL);
760 tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
761 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0);
763 xfs_trans_cancel(tp, 0);
767 xfs_ilock(ip, XFS_ILOCK_EXCL);
768 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
770 if (!(ioflags & IO_INVIS)) {
771 ip->i_d.di_mode &= ~S_ISUID;
772 if (ip->i_d.di_mode & S_IXGRP)
773 ip->i_d.di_mode &= ~S_ISGID;
774 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
778 ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
779 else if (clrprealloc)
780 ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
782 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
783 if (filp->f_flags & O_DSYNC)
784 xfs_trans_set_sync(tp);
785 error = xfs_trans_commit(tp, 0);
788 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
789 mnt_drop_write_file(filp);
799 xfs_fsop_bulkreq_t bulkreq;
800 int count; /* # of records returned */
801 xfs_ino_t inlast; /* last inode number */
805 /* done = 1 if there are more stats to get and if bulkstat */
806 /* should be called again (unused here, but used in dmapi) */
808 if (!capable(CAP_SYS_ADMIN))
811 if (XFS_FORCED_SHUTDOWN(mp))
812 return -XFS_ERROR(EIO);
814 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
815 return -XFS_ERROR(EFAULT);
817 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
818 return -XFS_ERROR(EFAULT);
820 if ((count = bulkreq.icount) <= 0)
821 return -XFS_ERROR(EINVAL);
823 if (bulkreq.ubuffer == NULL)
824 return -XFS_ERROR(EINVAL);
826 if (cmd == XFS_IOC_FSINUMBERS)
827 error = xfs_inumbers(mp, &inlast, &count,
828 bulkreq.ubuffer, xfs_inumbers_fmt);
829 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
830 error = xfs_bulkstat_single(mp, &inlast,
831 bulkreq.ubuffer, &done);
832 else /* XFS_IOC_FSBULKSTAT */
833 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
834 sizeof(xfs_bstat_t), bulkreq.ubuffer,
840 if (bulkreq.ocount != NULL) {
841 if (copy_to_user(bulkreq.lastip, &inlast,
843 return -XFS_ERROR(EFAULT);
845 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
846 return -XFS_ERROR(EFAULT);
853 xfs_ioc_fsgeometry_v1(
857 xfs_fsop_geom_t fsgeo;
860 error = xfs_fs_geometry(mp, &fsgeo, 3);
865 * Caller should have passed an argument of type
866 * xfs_fsop_geom_v1_t. This is a proper subset of the
867 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
869 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
870 return -XFS_ERROR(EFAULT);
879 xfs_fsop_geom_t fsgeo;
882 error = xfs_fs_geometry(mp, &fsgeo, 4);
886 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
887 return -XFS_ERROR(EFAULT);
892 * Linux extended inode flags interface.
896 xfs_merge_ioc_xflags(
900 unsigned int xflags = start;
902 if (flags & FS_IMMUTABLE_FL)
903 xflags |= XFS_XFLAG_IMMUTABLE;
905 xflags &= ~XFS_XFLAG_IMMUTABLE;
906 if (flags & FS_APPEND_FL)
907 xflags |= XFS_XFLAG_APPEND;
909 xflags &= ~XFS_XFLAG_APPEND;
910 if (flags & FS_SYNC_FL)
911 xflags |= XFS_XFLAG_SYNC;
913 xflags &= ~XFS_XFLAG_SYNC;
914 if (flags & FS_NOATIME_FL)
915 xflags |= XFS_XFLAG_NOATIME;
917 xflags &= ~XFS_XFLAG_NOATIME;
918 if (flags & FS_NODUMP_FL)
919 xflags |= XFS_XFLAG_NODUMP;
921 xflags &= ~XFS_XFLAG_NODUMP;
930 unsigned int flags = 0;
932 if (di_flags & XFS_DIFLAG_IMMUTABLE)
933 flags |= FS_IMMUTABLE_FL;
934 if (di_flags & XFS_DIFLAG_APPEND)
935 flags |= FS_APPEND_FL;
936 if (di_flags & XFS_DIFLAG_SYNC)
938 if (di_flags & XFS_DIFLAG_NOATIME)
939 flags |= FS_NOATIME_FL;
940 if (di_flags & XFS_DIFLAG_NODUMP)
941 flags |= FS_NODUMP_FL;
953 memset(&fa, 0, sizeof(struct fsxattr));
955 xfs_ilock(ip, XFS_ILOCK_SHARED);
956 fa.fsx_xflags = xfs_ip2xflags(ip);
957 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
958 fa.fsx_projid = xfs_get_projid(ip);
962 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
963 fa.fsx_nextents = ip->i_afp->if_bytes /
964 sizeof(xfs_bmbt_rec_t);
966 fa.fsx_nextents = ip->i_d.di_anextents;
970 if (ip->i_df.if_flags & XFS_IFEXTENTS)
971 fa.fsx_nextents = ip->i_df.if_bytes /
972 sizeof(xfs_bmbt_rec_t);
974 fa.fsx_nextents = ip->i_d.di_nextents;
976 xfs_iunlock(ip, XFS_ILOCK_SHARED);
978 if (copy_to_user(arg, &fa, sizeof(fa)))
985 struct xfs_inode *ip,
988 unsigned int di_flags;
990 /* can't set PREALLOC this way, just preserve it */
991 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
992 if (xflags & XFS_XFLAG_IMMUTABLE)
993 di_flags |= XFS_DIFLAG_IMMUTABLE;
994 if (xflags & XFS_XFLAG_APPEND)
995 di_flags |= XFS_DIFLAG_APPEND;
996 if (xflags & XFS_XFLAG_SYNC)
997 di_flags |= XFS_DIFLAG_SYNC;
998 if (xflags & XFS_XFLAG_NOATIME)
999 di_flags |= XFS_DIFLAG_NOATIME;
1000 if (xflags & XFS_XFLAG_NODUMP)
1001 di_flags |= XFS_DIFLAG_NODUMP;
1002 if (xflags & XFS_XFLAG_PROJINHERIT)
1003 di_flags |= XFS_DIFLAG_PROJINHERIT;
1004 if (xflags & XFS_XFLAG_NODEFRAG)
1005 di_flags |= XFS_DIFLAG_NODEFRAG;
1006 if (xflags & XFS_XFLAG_FILESTREAM)
1007 di_flags |= XFS_DIFLAG_FILESTREAM;
1008 if (S_ISDIR(ip->i_d.di_mode)) {
1009 if (xflags & XFS_XFLAG_RTINHERIT)
1010 di_flags |= XFS_DIFLAG_RTINHERIT;
1011 if (xflags & XFS_XFLAG_NOSYMLINKS)
1012 di_flags |= XFS_DIFLAG_NOSYMLINKS;
1013 if (xflags & XFS_XFLAG_EXTSZINHERIT)
1014 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
1015 } else if (S_ISREG(ip->i_d.di_mode)) {
1016 if (xflags & XFS_XFLAG_REALTIME)
1017 di_flags |= XFS_DIFLAG_REALTIME;
1018 if (xflags & XFS_XFLAG_EXTSIZE)
1019 di_flags |= XFS_DIFLAG_EXTSIZE;
1022 ip->i_d.di_flags = di_flags;
1026 xfs_diflags_to_linux(
1027 struct xfs_inode *ip)
1029 struct inode *inode = VFS_I(ip);
1030 unsigned int xflags = xfs_ip2xflags(ip);
1032 if (xflags & XFS_XFLAG_IMMUTABLE)
1033 inode->i_flags |= S_IMMUTABLE;
1035 inode->i_flags &= ~S_IMMUTABLE;
1036 if (xflags & XFS_XFLAG_APPEND)
1037 inode->i_flags |= S_APPEND;
1039 inode->i_flags &= ~S_APPEND;
1040 if (xflags & XFS_XFLAG_SYNC)
1041 inode->i_flags |= S_SYNC;
1043 inode->i_flags &= ~S_SYNC;
1044 if (xflags & XFS_XFLAG_NOATIME)
1045 inode->i_flags |= S_NOATIME;
1047 inode->i_flags &= ~S_NOATIME;
1050 #define FSX_PROJID 1
1051 #define FSX_EXTSIZE 2
1052 #define FSX_XFLAGS 4
1053 #define FSX_NONBLOCK 8
1061 struct xfs_mount *mp = ip->i_mount;
1062 struct xfs_trans *tp;
1063 unsigned int lock_flags = 0;
1064 struct xfs_dquot *udqp = NULL;
1065 struct xfs_dquot *pdqp = NULL;
1066 struct xfs_dquot *olddquot = NULL;
1069 trace_xfs_ioctl_setattr(ip);
1071 if (mp->m_flags & XFS_MOUNT_RDONLY)
1072 return XFS_ERROR(EROFS);
1073 if (XFS_FORCED_SHUTDOWN(mp))
1074 return XFS_ERROR(EIO);
1077 * Disallow 32bit project ids when projid32bit feature is not enabled.
1079 if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) &&
1080 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1081 return XFS_ERROR(EINVAL);
1084 * If disk quotas is on, we make sure that the dquots do exist on disk,
1085 * before we start any other transactions. Trying to do this later
1086 * is messy. We don't care to take a readlock to look at the ids
1087 * in inode here, because we can't hold it across the trans_reserve.
1088 * If the IDs do change before we take the ilock, we're covered
1089 * because the i_*dquot fields will get updated anyway.
1091 if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) {
1092 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1093 ip->i_d.di_gid, fa->fsx_projid,
1094 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1100 * For the other attributes, we acquire the inode lock and
1101 * first do an error checking pass.
1103 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
1104 code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
1108 lock_flags = XFS_ILOCK_EXCL;
1109 xfs_ilock(ip, lock_flags);
1112 * CAP_FOWNER overrides the following restrictions:
1114 * The user ID of the calling process must be equal
1115 * to the file owner ID, except in cases where the
1116 * CAP_FSETID capability is applicable.
1118 if (!inode_owner_or_capable(VFS_I(ip))) {
1119 code = XFS_ERROR(EPERM);
1124 * Do a quota reservation only if projid is actually going to change.
1125 * Only allow changing of projid from init_user_ns since it is a
1126 * non user namespace aware identifier.
1128 if (mask & FSX_PROJID) {
1129 if (current_user_ns() != &init_user_ns) {
1130 code = XFS_ERROR(EINVAL);
1134 if (XFS_IS_QUOTA_RUNNING(mp) &&
1135 XFS_IS_PQUOTA_ON(mp) &&
1136 xfs_get_projid(ip) != fa->fsx_projid) {
1138 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL,
1139 pdqp, capable(CAP_FOWNER) ?
1140 XFS_QMOPT_FORCE_RES : 0);
1141 if (code) /* out of quota */
1146 if (mask & FSX_EXTSIZE) {
1148 * Can't change extent size if any extents are allocated.
1150 if (ip->i_d.di_nextents &&
1151 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) !=
1153 code = XFS_ERROR(EINVAL); /* EFBIG? */
1158 * Extent size must be a multiple of the appropriate block
1159 * size, if set at all. It must also be smaller than the
1160 * maximum extent size supported by the filesystem.
1162 * Also, for non-realtime files, limit the extent size hint to
1163 * half the size of the AGs in the filesystem so alignment
1164 * doesn't result in extents larger than an AG.
1166 if (fa->fsx_extsize != 0) {
1168 xfs_fsblock_t extsize_fsb;
1170 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1171 if (extsize_fsb > MAXEXTLEN) {
1172 code = XFS_ERROR(EINVAL);
1176 if (XFS_IS_REALTIME_INODE(ip) ||
1177 ((mask & FSX_XFLAGS) &&
1178 (fa->fsx_xflags & XFS_XFLAG_REALTIME))) {
1179 size = mp->m_sb.sb_rextsize <<
1180 mp->m_sb.sb_blocklog;
1182 size = mp->m_sb.sb_blocksize;
1183 if (extsize_fsb > mp->m_sb.sb_agblocks / 2) {
1184 code = XFS_ERROR(EINVAL);
1189 if (fa->fsx_extsize % size) {
1190 code = XFS_ERROR(EINVAL);
1197 if (mask & FSX_XFLAGS) {
1199 * Can't change realtime flag if any extents are allocated.
1201 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1202 (XFS_IS_REALTIME_INODE(ip)) !=
1203 (fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1204 code = XFS_ERROR(EINVAL); /* EFBIG? */
1209 * If realtime flag is set then must have realtime data.
1211 if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1212 if ((mp->m_sb.sb_rblocks == 0) ||
1213 (mp->m_sb.sb_rextsize == 0) ||
1214 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) {
1215 code = XFS_ERROR(EINVAL);
1221 * Can't modify an immutable/append-only file unless
1222 * we have appropriate permission.
1224 if ((ip->i_d.di_flags &
1225 (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) ||
1227 (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) &&
1228 !capable(CAP_LINUX_IMMUTABLE)) {
1229 code = XFS_ERROR(EPERM);
1234 xfs_trans_ijoin(tp, ip, 0);
1237 * Change file ownership. Must be the owner or privileged.
1239 if (mask & FSX_PROJID) {
1241 * CAP_FSETID overrides the following restrictions:
1243 * The set-user-ID and set-group-ID bits of a file will be
1244 * cleared upon successful return from chown()
1246 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
1247 !inode_capable(VFS_I(ip), CAP_FSETID))
1248 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
1251 * Change the ownerships and register quota modifications
1252 * in the transaction.
1254 if (xfs_get_projid(ip) != fa->fsx_projid) {
1255 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1256 olddquot = xfs_qm_vop_chown(tp, ip,
1257 &ip->i_pdquot, pdqp);
1259 xfs_set_projid(ip, fa->fsx_projid);
1262 * We may have to rev the inode as well as
1263 * the superblock version number since projids didn't
1264 * exist before DINODE_VERSION_2 and SB_VERSION_NLINK.
1266 if (ip->i_d.di_version == 1)
1267 xfs_bump_ino_vers2(tp, ip);
1272 if (mask & FSX_EXTSIZE)
1273 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1274 if (mask & FSX_XFLAGS) {
1275 xfs_set_diflags(ip, fa->fsx_xflags);
1276 xfs_diflags_to_linux(ip);
1279 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1280 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1282 XFS_STATS_INC(xs_ig_attrchg);
1285 * If this is a synchronous mount, make sure that the
1286 * transaction goes to disk before returning to the user.
1287 * This is slightly sub-optimal in that truncates require
1288 * two sync transactions instead of one for wsync filesystems.
1289 * One for the truncate and one for the timestamps since we
1290 * don't want to change the timestamps unless we're sure the
1291 * truncate worked. Truncates are less than 1% of the laddis
1292 * mix so this probably isn't worth the trouble to optimize.
1294 if (mp->m_flags & XFS_MOUNT_WSYNC)
1295 xfs_trans_set_sync(tp);
1296 code = xfs_trans_commit(tp, 0);
1297 xfs_iunlock(ip, lock_flags);
1300 * Release any dquot(s) the inode had kept before chown.
1302 xfs_qm_dqrele(olddquot);
1303 xfs_qm_dqrele(udqp);
1304 xfs_qm_dqrele(pdqp);
1309 xfs_qm_dqrele(udqp);
1310 xfs_qm_dqrele(pdqp);
1311 xfs_trans_cancel(tp, 0);
1313 xfs_iunlock(ip, lock_flags);
1327 if (copy_from_user(&fa, arg, sizeof(fa)))
1330 mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID;
1331 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1332 mask |= FSX_NONBLOCK;
1334 error = mnt_want_write_file(filp);
1337 error = xfs_ioctl_setattr(ip, &fa, mask);
1338 mnt_drop_write_file(filp);
1349 flags = xfs_di2lxflags(ip->i_d.di_flags);
1350 if (copy_to_user(arg, &flags, sizeof(flags)))
1366 if (copy_from_user(&flags, arg, sizeof(flags)))
1369 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1370 FS_NOATIME_FL | FS_NODUMP_FL | \
1375 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1376 mask |= FSX_NONBLOCK;
1377 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1379 error = mnt_want_write_file(filp);
1382 error = xfs_ioctl_setattr(ip, &fa, mask);
1383 mnt_drop_write_file(filp);
1388 xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full)
1390 struct getbmap __user *base = *ap;
1392 /* copy only getbmap portion (not getbmapx) */
1393 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1394 return XFS_ERROR(EFAULT);
1396 *ap += sizeof(struct getbmap);
1402 struct xfs_inode *ip,
1407 struct getbmapx bmx;
1410 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1411 return -XFS_ERROR(EFAULT);
1413 if (bmx.bmv_count < 2)
1414 return -XFS_ERROR(EINVAL);
1416 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1417 if (ioflags & IO_INVIS)
1418 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1420 error = xfs_getbmap(ip, &bmx, xfs_getbmap_format,
1421 (struct getbmap *)arg+1);
1425 /* copy back header - only size of getbmap */
1426 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1427 return -XFS_ERROR(EFAULT);
1432 xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full)
1434 struct getbmapx __user *base = *ap;
1436 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1437 return XFS_ERROR(EFAULT);
1439 *ap += sizeof(struct getbmapx);
1445 struct xfs_inode *ip,
1448 struct getbmapx bmx;
1451 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1452 return -XFS_ERROR(EFAULT);
1454 if (bmx.bmv_count < 2)
1455 return -XFS_ERROR(EINVAL);
1457 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1458 return -XFS_ERROR(EINVAL);
1460 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1461 (struct getbmapx *)arg+1);
1465 /* copy back header */
1466 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1467 return -XFS_ERROR(EFAULT);
1476 xfs_inode_t *ip, *tip;
1480 /* Pull information for the target fd */
1481 f = fdget((int)sxp->sx_fdtarget);
1483 error = XFS_ERROR(EINVAL);
1487 if (!(f.file->f_mode & FMODE_WRITE) ||
1488 !(f.file->f_mode & FMODE_READ) ||
1489 (f.file->f_flags & O_APPEND)) {
1490 error = XFS_ERROR(EBADF);
1494 tmp = fdget((int)sxp->sx_fdtmp);
1496 error = XFS_ERROR(EINVAL);
1500 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1501 !(tmp.file->f_mode & FMODE_READ) ||
1502 (tmp.file->f_flags & O_APPEND)) {
1503 error = XFS_ERROR(EBADF);
1504 goto out_put_tmp_file;
1507 if (IS_SWAPFILE(file_inode(f.file)) ||
1508 IS_SWAPFILE(file_inode(tmp.file))) {
1509 error = XFS_ERROR(EINVAL);
1510 goto out_put_tmp_file;
1513 ip = XFS_I(file_inode(f.file));
1514 tip = XFS_I(file_inode(tmp.file));
1516 if (ip->i_mount != tip->i_mount) {
1517 error = XFS_ERROR(EINVAL);
1518 goto out_put_tmp_file;
1521 if (ip->i_ino == tip->i_ino) {
1522 error = XFS_ERROR(EINVAL);
1523 goto out_put_tmp_file;
1526 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1527 error = XFS_ERROR(EIO);
1528 goto out_put_tmp_file;
1531 error = xfs_swap_extents(ip, tip, sxp);
1542 * Note: some of the ioctl's return positive numbers as a
1543 * byte count indicating success, such as readlink_by_handle.
1544 * So we don't "sign flip" like most other routines. This means
1545 * true errors need to be returned as a negative value.
1553 struct inode *inode = file_inode(filp);
1554 struct xfs_inode *ip = XFS_I(inode);
1555 struct xfs_mount *mp = ip->i_mount;
1556 void __user *arg = (void __user *)p;
1560 if (filp->f_mode & FMODE_NOCMTIME)
1561 ioflags |= IO_INVIS;
1563 trace_xfs_file_ioctl(ip);
1567 return xfs_ioc_trim(mp, arg);
1568 case XFS_IOC_ALLOCSP:
1569 case XFS_IOC_FREESP:
1570 case XFS_IOC_RESVSP:
1571 case XFS_IOC_UNRESVSP:
1572 case XFS_IOC_ALLOCSP64:
1573 case XFS_IOC_FREESP64:
1574 case XFS_IOC_RESVSP64:
1575 case XFS_IOC_UNRESVSP64:
1576 case XFS_IOC_ZERO_RANGE: {
1579 if (copy_from_user(&bf, arg, sizeof(bf)))
1580 return -XFS_ERROR(EFAULT);
1581 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
1583 case XFS_IOC_DIOINFO: {
1585 xfs_buftarg_t *target =
1586 XFS_IS_REALTIME_INODE(ip) ?
1587 mp->m_rtdev_targp : mp->m_ddev_targp;
1589 da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
1590 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1592 if (copy_to_user(arg, &da, sizeof(da)))
1593 return -XFS_ERROR(EFAULT);
1597 case XFS_IOC_FSBULKSTAT_SINGLE:
1598 case XFS_IOC_FSBULKSTAT:
1599 case XFS_IOC_FSINUMBERS:
1600 return xfs_ioc_bulkstat(mp, cmd, arg);
1602 case XFS_IOC_FSGEOMETRY_V1:
1603 return xfs_ioc_fsgeometry_v1(mp, arg);
1605 case XFS_IOC_FSGEOMETRY:
1606 return xfs_ioc_fsgeometry(mp, arg);
1608 case XFS_IOC_GETVERSION:
1609 return put_user(inode->i_generation, (int __user *)arg);
1611 case XFS_IOC_FSGETXATTR:
1612 return xfs_ioc_fsgetxattr(ip, 0, arg);
1613 case XFS_IOC_FSGETXATTRA:
1614 return xfs_ioc_fsgetxattr(ip, 1, arg);
1615 case XFS_IOC_FSSETXATTR:
1616 return xfs_ioc_fssetxattr(ip, filp, arg);
1617 case XFS_IOC_GETXFLAGS:
1618 return xfs_ioc_getxflags(ip, arg);
1619 case XFS_IOC_SETXFLAGS:
1620 return xfs_ioc_setxflags(ip, filp, arg);
1622 case XFS_IOC_FSSETDM: {
1623 struct fsdmidata dmi;
1625 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1626 return -XFS_ERROR(EFAULT);
1628 error = mnt_want_write_file(filp);
1632 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1634 mnt_drop_write_file(filp);
1638 case XFS_IOC_GETBMAP:
1639 case XFS_IOC_GETBMAPA:
1640 return xfs_ioc_getbmap(ip, ioflags, cmd, arg);
1642 case XFS_IOC_GETBMAPX:
1643 return xfs_ioc_getbmapx(ip, arg);
1645 case XFS_IOC_FD_TO_HANDLE:
1646 case XFS_IOC_PATH_TO_HANDLE:
1647 case XFS_IOC_PATH_TO_FSHANDLE: {
1648 xfs_fsop_handlereq_t hreq;
1650 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1651 return -XFS_ERROR(EFAULT);
1652 return xfs_find_handle(cmd, &hreq);
1654 case XFS_IOC_OPEN_BY_HANDLE: {
1655 xfs_fsop_handlereq_t hreq;
1657 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1658 return -XFS_ERROR(EFAULT);
1659 return xfs_open_by_handle(filp, &hreq);
1661 case XFS_IOC_FSSETDM_BY_HANDLE:
1662 return xfs_fssetdm_by_handle(filp, arg);
1664 case XFS_IOC_READLINK_BY_HANDLE: {
1665 xfs_fsop_handlereq_t hreq;
1667 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1668 return -XFS_ERROR(EFAULT);
1669 return xfs_readlink_by_handle(filp, &hreq);
1671 case XFS_IOC_ATTRLIST_BY_HANDLE:
1672 return xfs_attrlist_by_handle(filp, arg);
1674 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1675 return xfs_attrmulti_by_handle(filp, arg);
1677 case XFS_IOC_SWAPEXT: {
1678 struct xfs_swapext sxp;
1680 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1681 return -XFS_ERROR(EFAULT);
1682 error = mnt_want_write_file(filp);
1685 error = xfs_ioc_swapext(&sxp);
1686 mnt_drop_write_file(filp);
1690 case XFS_IOC_FSCOUNTS: {
1691 xfs_fsop_counts_t out;
1693 error = xfs_fs_counts(mp, &out);
1697 if (copy_to_user(arg, &out, sizeof(out)))
1698 return -XFS_ERROR(EFAULT);
1702 case XFS_IOC_SET_RESBLKS: {
1703 xfs_fsop_resblks_t inout;
1706 if (!capable(CAP_SYS_ADMIN))
1709 if (mp->m_flags & XFS_MOUNT_RDONLY)
1710 return -XFS_ERROR(EROFS);
1712 if (copy_from_user(&inout, arg, sizeof(inout)))
1713 return -XFS_ERROR(EFAULT);
1715 error = mnt_want_write_file(filp);
1719 /* input parameter is passed in resblks field of structure */
1721 error = xfs_reserve_blocks(mp, &in, &inout);
1722 mnt_drop_write_file(filp);
1726 if (copy_to_user(arg, &inout, sizeof(inout)))
1727 return -XFS_ERROR(EFAULT);
1731 case XFS_IOC_GET_RESBLKS: {
1732 xfs_fsop_resblks_t out;
1734 if (!capable(CAP_SYS_ADMIN))
1737 error = xfs_reserve_blocks(mp, NULL, &out);
1741 if (copy_to_user(arg, &out, sizeof(out)))
1742 return -XFS_ERROR(EFAULT);
1747 case XFS_IOC_FSGROWFSDATA: {
1748 xfs_growfs_data_t in;
1750 if (copy_from_user(&in, arg, sizeof(in)))
1751 return -XFS_ERROR(EFAULT);
1753 error = mnt_want_write_file(filp);
1756 error = xfs_growfs_data(mp, &in);
1757 mnt_drop_write_file(filp);
1761 case XFS_IOC_FSGROWFSLOG: {
1762 xfs_growfs_log_t in;
1764 if (copy_from_user(&in, arg, sizeof(in)))
1765 return -XFS_ERROR(EFAULT);
1767 error = mnt_want_write_file(filp);
1770 error = xfs_growfs_log(mp, &in);
1771 mnt_drop_write_file(filp);
1775 case XFS_IOC_FSGROWFSRT: {
1778 if (copy_from_user(&in, arg, sizeof(in)))
1779 return -XFS_ERROR(EFAULT);
1781 error = mnt_want_write_file(filp);
1784 error = xfs_growfs_rt(mp, &in);
1785 mnt_drop_write_file(filp);
1789 case XFS_IOC_GOINGDOWN: {
1792 if (!capable(CAP_SYS_ADMIN))
1795 if (get_user(in, (__uint32_t __user *)arg))
1796 return -XFS_ERROR(EFAULT);
1798 error = xfs_fs_goingdown(mp, in);
1802 case XFS_IOC_ERROR_INJECTION: {
1803 xfs_error_injection_t in;
1805 if (!capable(CAP_SYS_ADMIN))
1808 if (copy_from_user(&in, arg, sizeof(in)))
1809 return -XFS_ERROR(EFAULT);
1811 error = xfs_errortag_add(in.errtag, mp);
1815 case XFS_IOC_ERROR_CLEARALL:
1816 if (!capable(CAP_SYS_ADMIN))
1819 error = xfs_errortag_clearall(mp, 1);
1822 case XFS_IOC_FREE_EOFBLOCKS: {
1823 struct xfs_fs_eofblocks eofb;
1824 struct xfs_eofblocks keofb;
1826 if (!capable(CAP_SYS_ADMIN))
1829 if (mp->m_flags & XFS_MOUNT_RDONLY)
1830 return -XFS_ERROR(EROFS);
1832 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1833 return -XFS_ERROR(EFAULT);
1835 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
1839 return -xfs_icache_free_eofblocks(mp, &keofb);