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_format.h"
22 #include "xfs_trans.h"
25 #include "xfs_alloc.h"
26 #include "xfs_mount.h"
27 #include "xfs_bmap_btree.h"
28 #include "xfs_dinode.h"
29 #include "xfs_inode.h"
30 #include "xfs_ioctl.h"
31 #include "xfs_rtalloc.h"
32 #include "xfs_itable.h"
33 #include "xfs_error.h"
36 #include "xfs_bmap_util.h"
37 #include "xfs_buf_item.h"
38 #include "xfs_fsops.h"
39 #include "xfs_discard.h"
40 #include "xfs_quota.h"
41 #include "xfs_inode_item.h"
42 #include "xfs_export.h"
43 #include "xfs_trace.h"
44 #include "xfs_icache.h"
45 #include "xfs_symlink.h"
47 #include <linux/capability.h>
48 #include <linux/dcache.h>
49 #include <linux/mount.h>
50 #include <linux/namei.h>
51 #include <linux/pagemap.h>
52 #include <linux/slab.h>
53 #include <linux/exportfs.h>
56 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
57 * a file or fs handle.
59 * XFS_IOC_PATH_TO_FSHANDLE
60 * returns fs handle for a mount point or path within that mount point
61 * XFS_IOC_FD_TO_HANDLE
62 * returns full handle for a FD opened in user space
63 * XFS_IOC_PATH_TO_HANDLE
64 * returns full handle for a path
69 xfs_fsop_handlereq_t *hreq)
79 if (cmd == XFS_IOC_FD_TO_HANDLE) {
83 inode = file_inode(f.file);
85 error = user_lpath((const char __user *)hreq->path, &path);
88 inode = path.dentry->d_inode;
93 * We can only generate handles for inodes residing on a XFS filesystem,
94 * and only for regular files, directories or symbolic links.
97 if (inode->i_sb->s_magic != XFS_SB_MAGIC)
101 if (!S_ISREG(inode->i_mode) &&
102 !S_ISDIR(inode->i_mode) &&
103 !S_ISLNK(inode->i_mode))
107 memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
109 if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
111 * This handle only contains an fsid, zero the rest.
113 memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
114 hsize = sizeof(xfs_fsid_t);
118 lock_mode = xfs_ilock_map_shared(ip);
119 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
120 sizeof(handle.ha_fid.fid_len);
121 handle.ha_fid.fid_pad = 0;
122 handle.ha_fid.fid_gen = ip->i_d.di_gen;
123 handle.ha_fid.fid_ino = ip->i_ino;
124 xfs_iunlock_map_shared(ip, lock_mode);
126 hsize = XFS_HSIZE(handle);
130 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
131 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
137 if (cmd == XFS_IOC_FD_TO_HANDLE)
145 * No need to do permission checks on the various pathname components
146 * as the handle operations are privileged.
149 xfs_handle_acceptable(
151 struct dentry *dentry)
157 * Convert userspace handle data into a dentry.
160 xfs_handle_to_dentry(
161 struct file *parfilp,
162 void __user *uhandle,
166 struct xfs_fid64 fid;
169 * Only allow handle opens under a directory.
171 if (!S_ISDIR(file_inode(parfilp)->i_mode))
172 return ERR_PTR(-ENOTDIR);
174 if (hlen != sizeof(xfs_handle_t))
175 return ERR_PTR(-EINVAL);
176 if (copy_from_user(&handle, uhandle, hlen))
177 return ERR_PTR(-EFAULT);
178 if (handle.ha_fid.fid_len !=
179 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
180 return ERR_PTR(-EINVAL);
182 memset(&fid, 0, sizeof(struct fid));
183 fid.ino = handle.ha_fid.fid_ino;
184 fid.gen = handle.ha_fid.fid_gen;
186 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
187 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
188 xfs_handle_acceptable, NULL);
191 STATIC struct dentry *
192 xfs_handlereq_to_dentry(
193 struct file *parfilp,
194 xfs_fsop_handlereq_t *hreq)
196 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
201 struct file *parfilp,
202 xfs_fsop_handlereq_t *hreq)
204 const struct cred *cred = current_cred();
210 struct dentry *dentry;
214 if (!capable(CAP_SYS_ADMIN))
215 return -XFS_ERROR(EPERM);
217 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
219 return PTR_ERR(dentry);
220 inode = dentry->d_inode;
222 /* Restrict xfs_open_by_handle to directories & regular files. */
223 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
224 error = -XFS_ERROR(EPERM);
228 #if BITS_PER_LONG != 32
229 hreq->oflags |= O_LARGEFILE;
232 permflag = hreq->oflags;
233 fmode = OPEN_FMODE(permflag);
234 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
235 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
236 error = -XFS_ERROR(EPERM);
240 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
241 error = -XFS_ERROR(EACCES);
245 /* Can't write directories. */
246 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
247 error = -XFS_ERROR(EISDIR);
251 fd = get_unused_fd_flags(0);
257 path.mnt = parfilp->f_path.mnt;
258 path.dentry = dentry;
259 filp = dentry_open(&path, hreq->oflags, cred);
263 return PTR_ERR(filp);
266 if (S_ISREG(inode->i_mode)) {
267 filp->f_flags |= O_NOATIME;
268 filp->f_mode |= FMODE_NOCMTIME;
271 fd_install(fd, filp);
280 * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's
281 * unused first argument.
296 if (len > (unsigned) buflen)
298 if (copy_to_user(buffer, link, len))
306 xfs_readlink_by_handle(
307 struct file *parfilp,
308 xfs_fsop_handlereq_t *hreq)
310 struct dentry *dentry;
315 if (!capable(CAP_SYS_ADMIN))
316 return -XFS_ERROR(EPERM);
318 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
320 return PTR_ERR(dentry);
322 /* Restrict this handle operation to symlinks only. */
323 if (!S_ISLNK(dentry->d_inode->i_mode)) {
324 error = -XFS_ERROR(EINVAL);
328 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
329 error = -XFS_ERROR(EFAULT);
333 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
335 error = -XFS_ERROR(ENOMEM);
339 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
342 error = do_readlink(hreq->ohandle, olen, link);
359 xfs_mount_t *mp = ip->i_mount;
363 if (!capable(CAP_SYS_ADMIN))
364 return XFS_ERROR(EPERM);
366 if (XFS_FORCED_SHUTDOWN(mp))
367 return XFS_ERROR(EIO);
369 tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS);
370 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
372 xfs_trans_cancel(tp, 0);
375 xfs_ilock(ip, XFS_ILOCK_EXCL);
376 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
378 ip->i_d.di_dmevmask = evmask;
379 ip->i_d.di_dmstate = state;
381 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
382 error = xfs_trans_commit(tp, 0);
388 xfs_fssetdm_by_handle(
389 struct file *parfilp,
393 struct fsdmidata fsd;
394 xfs_fsop_setdm_handlereq_t dmhreq;
395 struct dentry *dentry;
397 if (!capable(CAP_MKNOD))
398 return -XFS_ERROR(EPERM);
399 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
400 return -XFS_ERROR(EFAULT);
402 error = mnt_want_write_file(parfilp);
406 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
407 if (IS_ERR(dentry)) {
408 mnt_drop_write_file(parfilp);
409 return PTR_ERR(dentry);
412 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
413 error = -XFS_ERROR(EPERM);
417 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
418 error = -XFS_ERROR(EFAULT);
422 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
426 mnt_drop_write_file(parfilp);
432 xfs_attrlist_by_handle(
433 struct file *parfilp,
437 attrlist_cursor_kern_t *cursor;
438 xfs_fsop_attrlist_handlereq_t al_hreq;
439 struct dentry *dentry;
442 if (!capable(CAP_SYS_ADMIN))
443 return -XFS_ERROR(EPERM);
444 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
445 return -XFS_ERROR(EFAULT);
446 if (al_hreq.buflen > XATTR_LIST_MAX)
447 return -XFS_ERROR(EINVAL);
450 * Reject flags, only allow namespaces.
452 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
453 return -XFS_ERROR(EINVAL);
455 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
457 return PTR_ERR(dentry);
459 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
463 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
464 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
465 al_hreq.flags, cursor);
469 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
480 xfs_attrmulti_attr_get(
483 unsigned char __user *ubuf,
490 if (*len > XATTR_SIZE_MAX)
492 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
496 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
500 if (copy_to_user(ubuf, kbuf, *len))
509 xfs_attrmulti_attr_set(
512 const unsigned char __user *ubuf,
519 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
521 if (len > XATTR_SIZE_MAX)
524 kbuf = memdup_user(ubuf, len);
526 return PTR_ERR(kbuf);
528 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
534 xfs_attrmulti_attr_remove(
539 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
541 return xfs_attr_remove(XFS_I(inode), name, flags);
545 xfs_attrmulti_by_handle(
546 struct file *parfilp,
550 xfs_attr_multiop_t *ops;
551 xfs_fsop_attrmulti_handlereq_t am_hreq;
552 struct dentry *dentry;
553 unsigned int i, size;
554 unsigned char *attr_name;
556 if (!capable(CAP_SYS_ADMIN))
557 return -XFS_ERROR(EPERM);
558 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
559 return -XFS_ERROR(EFAULT);
562 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
565 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
567 return PTR_ERR(dentry);
570 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
571 if (!size || size > 16 * PAGE_SIZE)
574 ops = memdup_user(am_hreq.ops, size);
576 error = PTR_ERR(ops);
580 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
585 for (i = 0; i < am_hreq.opcount; i++) {
586 ops[i].am_error = strncpy_from_user((char *)attr_name,
587 ops[i].am_attrname, MAXNAMELEN);
588 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
590 if (ops[i].am_error < 0)
593 switch (ops[i].am_opcode) {
595 ops[i].am_error = xfs_attrmulti_attr_get(
596 dentry->d_inode, attr_name,
597 ops[i].am_attrvalue, &ops[i].am_length,
601 ops[i].am_error = mnt_want_write_file(parfilp);
604 ops[i].am_error = xfs_attrmulti_attr_set(
605 dentry->d_inode, attr_name,
606 ops[i].am_attrvalue, ops[i].am_length,
608 mnt_drop_write_file(parfilp);
611 ops[i].am_error = mnt_want_write_file(parfilp);
614 ops[i].am_error = xfs_attrmulti_attr_remove(
615 dentry->d_inode, attr_name,
617 mnt_drop_write_file(parfilp);
620 ops[i].am_error = EINVAL;
624 if (copy_to_user(am_hreq.ops, ops, size))
625 error = XFS_ERROR(EFAULT);
637 struct xfs_inode *ip,
644 struct xfs_mount *mp = ip->i_mount;
645 struct xfs_trans *tp;
647 bool setprealloc = false;
648 bool clrprealloc = false;
652 * Only allow the sys admin to reserve space unless
653 * unwritten extents are enabled.
655 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
656 !capable(CAP_SYS_ADMIN))
657 return -XFS_ERROR(EPERM);
659 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
660 return -XFS_ERROR(EPERM);
662 if (!(filp->f_mode & FMODE_WRITE))
663 return -XFS_ERROR(EBADF);
665 if (!S_ISREG(inode->i_mode))
666 return -XFS_ERROR(EINVAL);
668 error = mnt_want_write_file(filp);
672 xfs_ilock(ip, XFS_IOLOCK_EXCL);
674 switch (bf->l_whence) {
678 bf->l_start += filp->f_pos;
681 bf->l_start += XFS_ISIZE(ip);
684 error = XFS_ERROR(EINVAL);
689 * length of <= 0 for resv/unresv/zero is invalid. length for
690 * alloc/free is ignored completely and we have no idea what userspace
691 * might have set it to, so set it to zero to allow range
695 case XFS_IOC_ZERO_RANGE:
697 case XFS_IOC_RESVSP64:
698 case XFS_IOC_UNRESVSP:
699 case XFS_IOC_UNRESVSP64:
700 if (bf->l_len <= 0) {
701 error = XFS_ERROR(EINVAL);
710 if (bf->l_start < 0 ||
711 bf->l_start > mp->m_super->s_maxbytes ||
712 bf->l_start + bf->l_len < 0 ||
713 bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) {
714 error = XFS_ERROR(EINVAL);
719 case XFS_IOC_ZERO_RANGE:
720 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
725 case XFS_IOC_RESVSP64:
726 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
731 case XFS_IOC_UNRESVSP:
732 case XFS_IOC_UNRESVSP64:
733 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
735 case XFS_IOC_ALLOCSP:
736 case XFS_IOC_ALLOCSP64:
738 case XFS_IOC_FREESP64:
739 if (bf->l_start > XFS_ISIZE(ip)) {
740 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
741 bf->l_start - XFS_ISIZE(ip), 0);
746 iattr.ia_valid = ATTR_SIZE;
747 iattr.ia_size = bf->l_start;
749 error = xfs_setattr_size(ip, &iattr);
755 error = XFS_ERROR(EINVAL);
761 tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
762 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0);
764 xfs_trans_cancel(tp, 0);
768 xfs_ilock(ip, XFS_ILOCK_EXCL);
769 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
771 if (!(ioflags & IO_INVIS)) {
772 ip->i_d.di_mode &= ~S_ISUID;
773 if (ip->i_d.di_mode & S_IXGRP)
774 ip->i_d.di_mode &= ~S_ISGID;
775 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
779 ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
780 else if (clrprealloc)
781 ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
783 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
784 if (filp->f_flags & O_DSYNC)
785 xfs_trans_set_sync(tp);
786 error = xfs_trans_commit(tp, 0);
789 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
790 mnt_drop_write_file(filp);
800 xfs_fsop_bulkreq_t bulkreq;
801 int count; /* # of records returned */
802 xfs_ino_t inlast; /* last inode number */
806 /* done = 1 if there are more stats to get and if bulkstat */
807 /* should be called again (unused here, but used in dmapi) */
809 if (!capable(CAP_SYS_ADMIN))
812 if (XFS_FORCED_SHUTDOWN(mp))
813 return -XFS_ERROR(EIO);
815 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
816 return -XFS_ERROR(EFAULT);
818 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
819 return -XFS_ERROR(EFAULT);
821 if ((count = bulkreq.icount) <= 0)
822 return -XFS_ERROR(EINVAL);
824 if (bulkreq.ubuffer == NULL)
825 return -XFS_ERROR(EINVAL);
827 if (cmd == XFS_IOC_FSINUMBERS)
828 error = xfs_inumbers(mp, &inlast, &count,
829 bulkreq.ubuffer, xfs_inumbers_fmt);
830 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
831 error = xfs_bulkstat_single(mp, &inlast,
832 bulkreq.ubuffer, &done);
833 else /* XFS_IOC_FSBULKSTAT */
834 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
835 sizeof(xfs_bstat_t), bulkreq.ubuffer,
841 if (bulkreq.ocount != NULL) {
842 if (copy_to_user(bulkreq.lastip, &inlast,
844 return -XFS_ERROR(EFAULT);
846 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
847 return -XFS_ERROR(EFAULT);
854 xfs_ioc_fsgeometry_v1(
858 xfs_fsop_geom_t fsgeo;
861 error = xfs_fs_geometry(mp, &fsgeo, 3);
866 * Caller should have passed an argument of type
867 * xfs_fsop_geom_v1_t. This is a proper subset of the
868 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
870 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
871 return -XFS_ERROR(EFAULT);
880 xfs_fsop_geom_t fsgeo;
883 error = xfs_fs_geometry(mp, &fsgeo, 4);
887 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
888 return -XFS_ERROR(EFAULT);
893 * Linux extended inode flags interface.
897 xfs_merge_ioc_xflags(
901 unsigned int xflags = start;
903 if (flags & FS_IMMUTABLE_FL)
904 xflags |= XFS_XFLAG_IMMUTABLE;
906 xflags &= ~XFS_XFLAG_IMMUTABLE;
907 if (flags & FS_APPEND_FL)
908 xflags |= XFS_XFLAG_APPEND;
910 xflags &= ~XFS_XFLAG_APPEND;
911 if (flags & FS_SYNC_FL)
912 xflags |= XFS_XFLAG_SYNC;
914 xflags &= ~XFS_XFLAG_SYNC;
915 if (flags & FS_NOATIME_FL)
916 xflags |= XFS_XFLAG_NOATIME;
918 xflags &= ~XFS_XFLAG_NOATIME;
919 if (flags & FS_NODUMP_FL)
920 xflags |= XFS_XFLAG_NODUMP;
922 xflags &= ~XFS_XFLAG_NODUMP;
931 unsigned int flags = 0;
933 if (di_flags & XFS_DIFLAG_IMMUTABLE)
934 flags |= FS_IMMUTABLE_FL;
935 if (di_flags & XFS_DIFLAG_APPEND)
936 flags |= FS_APPEND_FL;
937 if (di_flags & XFS_DIFLAG_SYNC)
939 if (di_flags & XFS_DIFLAG_NOATIME)
940 flags |= FS_NOATIME_FL;
941 if (di_flags & XFS_DIFLAG_NODUMP)
942 flags |= FS_NODUMP_FL;
954 memset(&fa, 0, sizeof(struct fsxattr));
956 xfs_ilock(ip, XFS_ILOCK_SHARED);
957 fa.fsx_xflags = xfs_ip2xflags(ip);
958 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
959 fa.fsx_projid = xfs_get_projid(ip);
963 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
964 fa.fsx_nextents = ip->i_afp->if_bytes /
965 sizeof(xfs_bmbt_rec_t);
967 fa.fsx_nextents = ip->i_d.di_anextents;
971 if (ip->i_df.if_flags & XFS_IFEXTENTS)
972 fa.fsx_nextents = ip->i_df.if_bytes /
973 sizeof(xfs_bmbt_rec_t);
975 fa.fsx_nextents = ip->i_d.di_nextents;
977 xfs_iunlock(ip, XFS_ILOCK_SHARED);
979 if (copy_to_user(arg, &fa, sizeof(fa)))
986 struct xfs_inode *ip,
989 unsigned int di_flags;
991 /* can't set PREALLOC this way, just preserve it */
992 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
993 if (xflags & XFS_XFLAG_IMMUTABLE)
994 di_flags |= XFS_DIFLAG_IMMUTABLE;
995 if (xflags & XFS_XFLAG_APPEND)
996 di_flags |= XFS_DIFLAG_APPEND;
997 if (xflags & XFS_XFLAG_SYNC)
998 di_flags |= XFS_DIFLAG_SYNC;
999 if (xflags & XFS_XFLAG_NOATIME)
1000 di_flags |= XFS_DIFLAG_NOATIME;
1001 if (xflags & XFS_XFLAG_NODUMP)
1002 di_flags |= XFS_DIFLAG_NODUMP;
1003 if (xflags & XFS_XFLAG_PROJINHERIT)
1004 di_flags |= XFS_DIFLAG_PROJINHERIT;
1005 if (xflags & XFS_XFLAG_NODEFRAG)
1006 di_flags |= XFS_DIFLAG_NODEFRAG;
1007 if (xflags & XFS_XFLAG_FILESTREAM)
1008 di_flags |= XFS_DIFLAG_FILESTREAM;
1009 if (S_ISDIR(ip->i_d.di_mode)) {
1010 if (xflags & XFS_XFLAG_RTINHERIT)
1011 di_flags |= XFS_DIFLAG_RTINHERIT;
1012 if (xflags & XFS_XFLAG_NOSYMLINKS)
1013 di_flags |= XFS_DIFLAG_NOSYMLINKS;
1014 if (xflags & XFS_XFLAG_EXTSZINHERIT)
1015 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
1016 } else if (S_ISREG(ip->i_d.di_mode)) {
1017 if (xflags & XFS_XFLAG_REALTIME)
1018 di_flags |= XFS_DIFLAG_REALTIME;
1019 if (xflags & XFS_XFLAG_EXTSIZE)
1020 di_flags |= XFS_DIFLAG_EXTSIZE;
1023 ip->i_d.di_flags = di_flags;
1027 xfs_diflags_to_linux(
1028 struct xfs_inode *ip)
1030 struct inode *inode = VFS_I(ip);
1031 unsigned int xflags = xfs_ip2xflags(ip);
1033 if (xflags & XFS_XFLAG_IMMUTABLE)
1034 inode->i_flags |= S_IMMUTABLE;
1036 inode->i_flags &= ~S_IMMUTABLE;
1037 if (xflags & XFS_XFLAG_APPEND)
1038 inode->i_flags |= S_APPEND;
1040 inode->i_flags &= ~S_APPEND;
1041 if (xflags & XFS_XFLAG_SYNC)
1042 inode->i_flags |= S_SYNC;
1044 inode->i_flags &= ~S_SYNC;
1045 if (xflags & XFS_XFLAG_NOATIME)
1046 inode->i_flags |= S_NOATIME;
1048 inode->i_flags &= ~S_NOATIME;
1051 #define FSX_PROJID 1
1052 #define FSX_EXTSIZE 2
1053 #define FSX_XFLAGS 4
1054 #define FSX_NONBLOCK 8
1062 struct xfs_mount *mp = ip->i_mount;
1063 struct xfs_trans *tp;
1064 unsigned int lock_flags = 0;
1065 struct xfs_dquot *udqp = NULL;
1066 struct xfs_dquot *pdqp = NULL;
1067 struct xfs_dquot *olddquot = NULL;
1070 trace_xfs_ioctl_setattr(ip);
1072 if (mp->m_flags & XFS_MOUNT_RDONLY)
1073 return XFS_ERROR(EROFS);
1074 if (XFS_FORCED_SHUTDOWN(mp))
1075 return XFS_ERROR(EIO);
1078 * Disallow 32bit project ids when projid32bit feature is not enabled.
1080 if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) &&
1081 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1082 return XFS_ERROR(EINVAL);
1085 * If disk quotas is on, we make sure that the dquots do exist on disk,
1086 * before we start any other transactions. Trying to do this later
1087 * is messy. We don't care to take a readlock to look at the ids
1088 * in inode here, because we can't hold it across the trans_reserve.
1089 * If the IDs do change before we take the ilock, we're covered
1090 * because the i_*dquot fields will get updated anyway.
1092 if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) {
1093 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1094 ip->i_d.di_gid, fa->fsx_projid,
1095 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1101 * For the other attributes, we acquire the inode lock and
1102 * first do an error checking pass.
1104 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
1105 code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
1109 lock_flags = XFS_ILOCK_EXCL;
1110 xfs_ilock(ip, lock_flags);
1113 * CAP_FOWNER overrides the following restrictions:
1115 * The user ID of the calling process must be equal
1116 * to the file owner ID, except in cases where the
1117 * CAP_FSETID capability is applicable.
1119 if (!inode_owner_or_capable(VFS_I(ip))) {
1120 code = XFS_ERROR(EPERM);
1125 * Do a quota reservation only if projid is actually going to change.
1126 * Only allow changing of projid from init_user_ns since it is a
1127 * non user namespace aware identifier.
1129 if (mask & FSX_PROJID) {
1130 if (current_user_ns() != &init_user_ns) {
1131 code = XFS_ERROR(EINVAL);
1135 if (XFS_IS_QUOTA_RUNNING(mp) &&
1136 XFS_IS_PQUOTA_ON(mp) &&
1137 xfs_get_projid(ip) != fa->fsx_projid) {
1139 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL,
1140 pdqp, capable(CAP_FOWNER) ?
1141 XFS_QMOPT_FORCE_RES : 0);
1142 if (code) /* out of quota */
1147 if (mask & FSX_EXTSIZE) {
1149 * Can't change extent size if any extents are allocated.
1151 if (ip->i_d.di_nextents &&
1152 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) !=
1154 code = XFS_ERROR(EINVAL); /* EFBIG? */
1159 * Extent size must be a multiple of the appropriate block
1160 * size, if set at all. It must also be smaller than the
1161 * maximum extent size supported by the filesystem.
1163 * Also, for non-realtime files, limit the extent size hint to
1164 * half the size of the AGs in the filesystem so alignment
1165 * doesn't result in extents larger than an AG.
1167 if (fa->fsx_extsize != 0) {
1169 xfs_fsblock_t extsize_fsb;
1171 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1172 if (extsize_fsb > MAXEXTLEN) {
1173 code = XFS_ERROR(EINVAL);
1177 if (XFS_IS_REALTIME_INODE(ip) ||
1178 ((mask & FSX_XFLAGS) &&
1179 (fa->fsx_xflags & XFS_XFLAG_REALTIME))) {
1180 size = mp->m_sb.sb_rextsize <<
1181 mp->m_sb.sb_blocklog;
1183 size = mp->m_sb.sb_blocksize;
1184 if (extsize_fsb > mp->m_sb.sb_agblocks / 2) {
1185 code = XFS_ERROR(EINVAL);
1190 if (fa->fsx_extsize % size) {
1191 code = XFS_ERROR(EINVAL);
1198 if (mask & FSX_XFLAGS) {
1200 * Can't change realtime flag if any extents are allocated.
1202 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1203 (XFS_IS_REALTIME_INODE(ip)) !=
1204 (fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1205 code = XFS_ERROR(EINVAL); /* EFBIG? */
1210 * If realtime flag is set then must have realtime data.
1212 if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1213 if ((mp->m_sb.sb_rblocks == 0) ||
1214 (mp->m_sb.sb_rextsize == 0) ||
1215 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) {
1216 code = XFS_ERROR(EINVAL);
1222 * Can't modify an immutable/append-only file unless
1223 * we have appropriate permission.
1225 if ((ip->i_d.di_flags &
1226 (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) ||
1228 (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) &&
1229 !capable(CAP_LINUX_IMMUTABLE)) {
1230 code = XFS_ERROR(EPERM);
1235 xfs_trans_ijoin(tp, ip, 0);
1238 * Change file ownership. Must be the owner or privileged.
1240 if (mask & FSX_PROJID) {
1242 * CAP_FSETID overrides the following restrictions:
1244 * The set-user-ID and set-group-ID bits of a file will be
1245 * cleared upon successful return from chown()
1247 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
1248 !inode_capable(VFS_I(ip), CAP_FSETID))
1249 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
1252 * Change the ownerships and register quota modifications
1253 * in the transaction.
1255 if (xfs_get_projid(ip) != fa->fsx_projid) {
1256 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1257 olddquot = xfs_qm_vop_chown(tp, ip,
1258 &ip->i_pdquot, pdqp);
1260 xfs_set_projid(ip, fa->fsx_projid);
1263 * We may have to rev the inode as well as
1264 * the superblock version number since projids didn't
1265 * exist before DINODE_VERSION_2 and SB_VERSION_NLINK.
1267 if (ip->i_d.di_version == 1)
1268 xfs_bump_ino_vers2(tp, ip);
1273 if (mask & FSX_EXTSIZE)
1274 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1275 if (mask & FSX_XFLAGS) {
1276 xfs_set_diflags(ip, fa->fsx_xflags);
1277 xfs_diflags_to_linux(ip);
1280 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1281 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1283 XFS_STATS_INC(xs_ig_attrchg);
1286 * If this is a synchronous mount, make sure that the
1287 * transaction goes to disk before returning to the user.
1288 * This is slightly sub-optimal in that truncates require
1289 * two sync transactions instead of one for wsync filesystems.
1290 * One for the truncate and one for the timestamps since we
1291 * don't want to change the timestamps unless we're sure the
1292 * truncate worked. Truncates are less than 1% of the laddis
1293 * mix so this probably isn't worth the trouble to optimize.
1295 if (mp->m_flags & XFS_MOUNT_WSYNC)
1296 xfs_trans_set_sync(tp);
1297 code = xfs_trans_commit(tp, 0);
1298 xfs_iunlock(ip, lock_flags);
1301 * Release any dquot(s) the inode had kept before chown.
1303 xfs_qm_dqrele(olddquot);
1304 xfs_qm_dqrele(udqp);
1305 xfs_qm_dqrele(pdqp);
1310 xfs_qm_dqrele(udqp);
1311 xfs_qm_dqrele(pdqp);
1312 xfs_trans_cancel(tp, 0);
1314 xfs_iunlock(ip, lock_flags);
1328 if (copy_from_user(&fa, arg, sizeof(fa)))
1331 mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID;
1332 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1333 mask |= FSX_NONBLOCK;
1335 error = mnt_want_write_file(filp);
1338 error = xfs_ioctl_setattr(ip, &fa, mask);
1339 mnt_drop_write_file(filp);
1350 flags = xfs_di2lxflags(ip->i_d.di_flags);
1351 if (copy_to_user(arg, &flags, sizeof(flags)))
1367 if (copy_from_user(&flags, arg, sizeof(flags)))
1370 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1371 FS_NOATIME_FL | FS_NODUMP_FL | \
1376 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1377 mask |= FSX_NONBLOCK;
1378 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1380 error = mnt_want_write_file(filp);
1383 error = xfs_ioctl_setattr(ip, &fa, mask);
1384 mnt_drop_write_file(filp);
1389 xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full)
1391 struct getbmap __user *base = *ap;
1393 /* copy only getbmap portion (not getbmapx) */
1394 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1395 return XFS_ERROR(EFAULT);
1397 *ap += sizeof(struct getbmap);
1403 struct xfs_inode *ip,
1408 struct getbmapx bmx;
1411 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1412 return -XFS_ERROR(EFAULT);
1414 if (bmx.bmv_count < 2)
1415 return -XFS_ERROR(EINVAL);
1417 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1418 if (ioflags & IO_INVIS)
1419 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1421 error = xfs_getbmap(ip, &bmx, xfs_getbmap_format,
1422 (struct getbmap *)arg+1);
1426 /* copy back header - only size of getbmap */
1427 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1428 return -XFS_ERROR(EFAULT);
1433 xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full)
1435 struct getbmapx __user *base = *ap;
1437 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1438 return XFS_ERROR(EFAULT);
1440 *ap += sizeof(struct getbmapx);
1446 struct xfs_inode *ip,
1449 struct getbmapx bmx;
1452 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1453 return -XFS_ERROR(EFAULT);
1455 if (bmx.bmv_count < 2)
1456 return -XFS_ERROR(EINVAL);
1458 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1459 return -XFS_ERROR(EINVAL);
1461 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1462 (struct getbmapx *)arg+1);
1466 /* copy back header */
1467 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1468 return -XFS_ERROR(EFAULT);
1477 xfs_inode_t *ip, *tip;
1481 /* Pull information for the target fd */
1482 f = fdget((int)sxp->sx_fdtarget);
1484 error = XFS_ERROR(EINVAL);
1488 if (!(f.file->f_mode & FMODE_WRITE) ||
1489 !(f.file->f_mode & FMODE_READ) ||
1490 (f.file->f_flags & O_APPEND)) {
1491 error = XFS_ERROR(EBADF);
1495 tmp = fdget((int)sxp->sx_fdtmp);
1497 error = XFS_ERROR(EINVAL);
1501 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1502 !(tmp.file->f_mode & FMODE_READ) ||
1503 (tmp.file->f_flags & O_APPEND)) {
1504 error = XFS_ERROR(EBADF);
1505 goto out_put_tmp_file;
1508 if (IS_SWAPFILE(file_inode(f.file)) ||
1509 IS_SWAPFILE(file_inode(tmp.file))) {
1510 error = XFS_ERROR(EINVAL);
1511 goto out_put_tmp_file;
1514 ip = XFS_I(file_inode(f.file));
1515 tip = XFS_I(file_inode(tmp.file));
1517 if (ip->i_mount != tip->i_mount) {
1518 error = XFS_ERROR(EINVAL);
1519 goto out_put_tmp_file;
1522 if (ip->i_ino == tip->i_ino) {
1523 error = XFS_ERROR(EINVAL);
1524 goto out_put_tmp_file;
1527 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1528 error = XFS_ERROR(EIO);
1529 goto out_put_tmp_file;
1532 error = xfs_swap_extents(ip, tip, sxp);
1543 * Note: some of the ioctl's return positive numbers as a
1544 * byte count indicating success, such as readlink_by_handle.
1545 * So we don't "sign flip" like most other routines. This means
1546 * true errors need to be returned as a negative value.
1554 struct inode *inode = file_inode(filp);
1555 struct xfs_inode *ip = XFS_I(inode);
1556 struct xfs_mount *mp = ip->i_mount;
1557 void __user *arg = (void __user *)p;
1561 if (filp->f_mode & FMODE_NOCMTIME)
1562 ioflags |= IO_INVIS;
1564 trace_xfs_file_ioctl(ip);
1568 return xfs_ioc_trim(mp, arg);
1569 case XFS_IOC_ALLOCSP:
1570 case XFS_IOC_FREESP:
1571 case XFS_IOC_RESVSP:
1572 case XFS_IOC_UNRESVSP:
1573 case XFS_IOC_ALLOCSP64:
1574 case XFS_IOC_FREESP64:
1575 case XFS_IOC_RESVSP64:
1576 case XFS_IOC_UNRESVSP64:
1577 case XFS_IOC_ZERO_RANGE: {
1580 if (copy_from_user(&bf, arg, sizeof(bf)))
1581 return -XFS_ERROR(EFAULT);
1582 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
1584 case XFS_IOC_DIOINFO: {
1586 xfs_buftarg_t *target =
1587 XFS_IS_REALTIME_INODE(ip) ?
1588 mp->m_rtdev_targp : mp->m_ddev_targp;
1590 da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
1591 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1593 if (copy_to_user(arg, &da, sizeof(da)))
1594 return -XFS_ERROR(EFAULT);
1598 case XFS_IOC_FSBULKSTAT_SINGLE:
1599 case XFS_IOC_FSBULKSTAT:
1600 case XFS_IOC_FSINUMBERS:
1601 return xfs_ioc_bulkstat(mp, cmd, arg);
1603 case XFS_IOC_FSGEOMETRY_V1:
1604 return xfs_ioc_fsgeometry_v1(mp, arg);
1606 case XFS_IOC_FSGEOMETRY:
1607 return xfs_ioc_fsgeometry(mp, arg);
1609 case XFS_IOC_GETVERSION:
1610 return put_user(inode->i_generation, (int __user *)arg);
1612 case XFS_IOC_FSGETXATTR:
1613 return xfs_ioc_fsgetxattr(ip, 0, arg);
1614 case XFS_IOC_FSGETXATTRA:
1615 return xfs_ioc_fsgetxattr(ip, 1, arg);
1616 case XFS_IOC_FSSETXATTR:
1617 return xfs_ioc_fssetxattr(ip, filp, arg);
1618 case XFS_IOC_GETXFLAGS:
1619 return xfs_ioc_getxflags(ip, arg);
1620 case XFS_IOC_SETXFLAGS:
1621 return xfs_ioc_setxflags(ip, filp, arg);
1623 case XFS_IOC_FSSETDM: {
1624 struct fsdmidata dmi;
1626 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1627 return -XFS_ERROR(EFAULT);
1629 error = mnt_want_write_file(filp);
1633 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1635 mnt_drop_write_file(filp);
1639 case XFS_IOC_GETBMAP:
1640 case XFS_IOC_GETBMAPA:
1641 return xfs_ioc_getbmap(ip, ioflags, cmd, arg);
1643 case XFS_IOC_GETBMAPX:
1644 return xfs_ioc_getbmapx(ip, arg);
1646 case XFS_IOC_FD_TO_HANDLE:
1647 case XFS_IOC_PATH_TO_HANDLE:
1648 case XFS_IOC_PATH_TO_FSHANDLE: {
1649 xfs_fsop_handlereq_t hreq;
1651 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1652 return -XFS_ERROR(EFAULT);
1653 return xfs_find_handle(cmd, &hreq);
1655 case XFS_IOC_OPEN_BY_HANDLE: {
1656 xfs_fsop_handlereq_t hreq;
1658 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1659 return -XFS_ERROR(EFAULT);
1660 return xfs_open_by_handle(filp, &hreq);
1662 case XFS_IOC_FSSETDM_BY_HANDLE:
1663 return xfs_fssetdm_by_handle(filp, arg);
1665 case XFS_IOC_READLINK_BY_HANDLE: {
1666 xfs_fsop_handlereq_t hreq;
1668 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1669 return -XFS_ERROR(EFAULT);
1670 return xfs_readlink_by_handle(filp, &hreq);
1672 case XFS_IOC_ATTRLIST_BY_HANDLE:
1673 return xfs_attrlist_by_handle(filp, arg);
1675 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1676 return xfs_attrmulti_by_handle(filp, arg);
1678 case XFS_IOC_SWAPEXT: {
1679 struct xfs_swapext sxp;
1681 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1682 return -XFS_ERROR(EFAULT);
1683 error = mnt_want_write_file(filp);
1686 error = xfs_ioc_swapext(&sxp);
1687 mnt_drop_write_file(filp);
1691 case XFS_IOC_FSCOUNTS: {
1692 xfs_fsop_counts_t out;
1694 error = xfs_fs_counts(mp, &out);
1698 if (copy_to_user(arg, &out, sizeof(out)))
1699 return -XFS_ERROR(EFAULT);
1703 case XFS_IOC_SET_RESBLKS: {
1704 xfs_fsop_resblks_t inout;
1707 if (!capable(CAP_SYS_ADMIN))
1710 if (mp->m_flags & XFS_MOUNT_RDONLY)
1711 return -XFS_ERROR(EROFS);
1713 if (copy_from_user(&inout, arg, sizeof(inout)))
1714 return -XFS_ERROR(EFAULT);
1716 error = mnt_want_write_file(filp);
1720 /* input parameter is passed in resblks field of structure */
1722 error = xfs_reserve_blocks(mp, &in, &inout);
1723 mnt_drop_write_file(filp);
1727 if (copy_to_user(arg, &inout, sizeof(inout)))
1728 return -XFS_ERROR(EFAULT);
1732 case XFS_IOC_GET_RESBLKS: {
1733 xfs_fsop_resblks_t out;
1735 if (!capable(CAP_SYS_ADMIN))
1738 error = xfs_reserve_blocks(mp, NULL, &out);
1742 if (copy_to_user(arg, &out, sizeof(out)))
1743 return -XFS_ERROR(EFAULT);
1748 case XFS_IOC_FSGROWFSDATA: {
1749 xfs_growfs_data_t in;
1751 if (copy_from_user(&in, arg, sizeof(in)))
1752 return -XFS_ERROR(EFAULT);
1754 error = mnt_want_write_file(filp);
1757 error = xfs_growfs_data(mp, &in);
1758 mnt_drop_write_file(filp);
1762 case XFS_IOC_FSGROWFSLOG: {
1763 xfs_growfs_log_t in;
1765 if (copy_from_user(&in, arg, sizeof(in)))
1766 return -XFS_ERROR(EFAULT);
1768 error = mnt_want_write_file(filp);
1771 error = xfs_growfs_log(mp, &in);
1772 mnt_drop_write_file(filp);
1776 case XFS_IOC_FSGROWFSRT: {
1779 if (copy_from_user(&in, arg, sizeof(in)))
1780 return -XFS_ERROR(EFAULT);
1782 error = mnt_want_write_file(filp);
1785 error = xfs_growfs_rt(mp, &in);
1786 mnt_drop_write_file(filp);
1790 case XFS_IOC_GOINGDOWN: {
1793 if (!capable(CAP_SYS_ADMIN))
1796 if (get_user(in, (__uint32_t __user *)arg))
1797 return -XFS_ERROR(EFAULT);
1799 error = xfs_fs_goingdown(mp, in);
1803 case XFS_IOC_ERROR_INJECTION: {
1804 xfs_error_injection_t in;
1806 if (!capable(CAP_SYS_ADMIN))
1809 if (copy_from_user(&in, arg, sizeof(in)))
1810 return -XFS_ERROR(EFAULT);
1812 error = xfs_errortag_add(in.errtag, mp);
1816 case XFS_IOC_ERROR_CLEARALL:
1817 if (!capable(CAP_SYS_ADMIN))
1820 error = xfs_errortag_clearall(mp, 1);
1823 case XFS_IOC_FREE_EOFBLOCKS: {
1824 struct xfs_fs_eofblocks eofb;
1825 struct xfs_eofblocks keofb;
1827 if (!capable(CAP_SYS_ADMIN))
1830 if (mp->m_flags & XFS_MOUNT_RDONLY)
1831 return -XFS_ERROR(EROFS);
1833 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1834 return -XFS_ERROR(EFAULT);
1836 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
1840 return -xfs_icache_free_eofblocks(mp, &keofb);