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);
115 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
116 sizeof(handle.ha_fid.fid_len);
117 handle.ha_fid.fid_pad = 0;
118 handle.ha_fid.fid_gen = ip->i_d.di_gen;
119 handle.ha_fid.fid_ino = ip->i_ino;
121 hsize = XFS_HSIZE(handle);
125 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
126 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
132 if (cmd == XFS_IOC_FD_TO_HANDLE)
140 * No need to do permission checks on the various pathname components
141 * as the handle operations are privileged.
144 xfs_handle_acceptable(
146 struct dentry *dentry)
152 * Convert userspace handle data into a dentry.
155 xfs_handle_to_dentry(
156 struct file *parfilp,
157 void __user *uhandle,
161 struct xfs_fid64 fid;
164 * Only allow handle opens under a directory.
166 if (!S_ISDIR(file_inode(parfilp)->i_mode))
167 return ERR_PTR(-ENOTDIR);
169 if (hlen != sizeof(xfs_handle_t))
170 return ERR_PTR(-EINVAL);
171 if (copy_from_user(&handle, uhandle, hlen))
172 return ERR_PTR(-EFAULT);
173 if (handle.ha_fid.fid_len !=
174 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
175 return ERR_PTR(-EINVAL);
177 memset(&fid, 0, sizeof(struct fid));
178 fid.ino = handle.ha_fid.fid_ino;
179 fid.gen = handle.ha_fid.fid_gen;
181 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
182 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
183 xfs_handle_acceptable, NULL);
186 STATIC struct dentry *
187 xfs_handlereq_to_dentry(
188 struct file *parfilp,
189 xfs_fsop_handlereq_t *hreq)
191 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
196 struct file *parfilp,
197 xfs_fsop_handlereq_t *hreq)
199 const struct cred *cred = current_cred();
205 struct dentry *dentry;
209 if (!capable(CAP_SYS_ADMIN))
210 return -XFS_ERROR(EPERM);
212 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
214 return PTR_ERR(dentry);
215 inode = dentry->d_inode;
217 /* Restrict xfs_open_by_handle to directories & regular files. */
218 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
219 error = -XFS_ERROR(EPERM);
223 #if BITS_PER_LONG != 32
224 hreq->oflags |= O_LARGEFILE;
227 permflag = hreq->oflags;
228 fmode = OPEN_FMODE(permflag);
229 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
230 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
231 error = -XFS_ERROR(EPERM);
235 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
236 error = -XFS_ERROR(EACCES);
240 /* Can't write directories. */
241 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
242 error = -XFS_ERROR(EISDIR);
246 fd = get_unused_fd_flags(0);
252 path.mnt = parfilp->f_path.mnt;
253 path.dentry = dentry;
254 filp = dentry_open(&path, hreq->oflags, cred);
258 return PTR_ERR(filp);
261 if (S_ISREG(inode->i_mode)) {
262 filp->f_flags |= O_NOATIME;
263 filp->f_mode |= FMODE_NOCMTIME;
266 fd_install(fd, filp);
275 xfs_readlink_by_handle(
276 struct file *parfilp,
277 xfs_fsop_handlereq_t *hreq)
279 struct dentry *dentry;
284 if (!capable(CAP_SYS_ADMIN))
285 return -XFS_ERROR(EPERM);
287 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
289 return PTR_ERR(dentry);
291 /* Restrict this handle operation to symlinks only. */
292 if (!S_ISLNK(dentry->d_inode->i_mode)) {
293 error = -XFS_ERROR(EINVAL);
297 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
298 error = -XFS_ERROR(EFAULT);
302 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
304 error = -XFS_ERROR(ENOMEM);
308 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
311 error = readlink_copy(hreq->ohandle, olen, link);
328 xfs_mount_t *mp = ip->i_mount;
332 if (!capable(CAP_SYS_ADMIN))
333 return XFS_ERROR(EPERM);
335 if (XFS_FORCED_SHUTDOWN(mp))
336 return XFS_ERROR(EIO);
338 tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS);
339 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
341 xfs_trans_cancel(tp, 0);
344 xfs_ilock(ip, XFS_ILOCK_EXCL);
345 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
347 ip->i_d.di_dmevmask = evmask;
348 ip->i_d.di_dmstate = state;
350 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
351 error = xfs_trans_commit(tp, 0);
357 xfs_fssetdm_by_handle(
358 struct file *parfilp,
362 struct fsdmidata fsd;
363 xfs_fsop_setdm_handlereq_t dmhreq;
364 struct dentry *dentry;
366 if (!capable(CAP_MKNOD))
367 return -XFS_ERROR(EPERM);
368 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
369 return -XFS_ERROR(EFAULT);
371 error = mnt_want_write_file(parfilp);
375 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
376 if (IS_ERR(dentry)) {
377 mnt_drop_write_file(parfilp);
378 return PTR_ERR(dentry);
381 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
382 error = -XFS_ERROR(EPERM);
386 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
387 error = -XFS_ERROR(EFAULT);
391 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
395 mnt_drop_write_file(parfilp);
401 xfs_attrlist_by_handle(
402 struct file *parfilp,
406 attrlist_cursor_kern_t *cursor;
407 xfs_fsop_attrlist_handlereq_t al_hreq;
408 struct dentry *dentry;
411 if (!capable(CAP_SYS_ADMIN))
412 return -XFS_ERROR(EPERM);
413 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
414 return -XFS_ERROR(EFAULT);
415 if (al_hreq.buflen < sizeof(struct attrlist) ||
416 al_hreq.buflen > XATTR_LIST_MAX)
417 return -XFS_ERROR(EINVAL);
420 * Reject flags, only allow namespaces.
422 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
423 return -XFS_ERROR(EINVAL);
425 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
427 return PTR_ERR(dentry);
429 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
433 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
434 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
435 al_hreq.flags, cursor);
439 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
450 xfs_attrmulti_attr_get(
453 unsigned char __user *ubuf,
460 if (*len > XATTR_SIZE_MAX)
462 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
466 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
470 if (copy_to_user(ubuf, kbuf, *len))
479 xfs_attrmulti_attr_set(
482 const unsigned char __user *ubuf,
489 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
491 if (len > XATTR_SIZE_MAX)
494 kbuf = memdup_user(ubuf, len);
496 return PTR_ERR(kbuf);
498 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
504 xfs_attrmulti_attr_remove(
509 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
511 return xfs_attr_remove(XFS_I(inode), name, flags);
515 xfs_attrmulti_by_handle(
516 struct file *parfilp,
520 xfs_attr_multiop_t *ops;
521 xfs_fsop_attrmulti_handlereq_t am_hreq;
522 struct dentry *dentry;
523 unsigned int i, size;
524 unsigned char *attr_name;
526 if (!capable(CAP_SYS_ADMIN))
527 return -XFS_ERROR(EPERM);
528 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
529 return -XFS_ERROR(EFAULT);
532 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
535 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
537 return PTR_ERR(dentry);
540 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
541 if (!size || size > 16 * PAGE_SIZE)
544 ops = memdup_user(am_hreq.ops, size);
546 error = PTR_ERR(ops);
550 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
555 for (i = 0; i < am_hreq.opcount; i++) {
556 ops[i].am_error = strncpy_from_user((char *)attr_name,
557 ops[i].am_attrname, MAXNAMELEN);
558 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
560 if (ops[i].am_error < 0)
563 switch (ops[i].am_opcode) {
565 ops[i].am_error = xfs_attrmulti_attr_get(
566 dentry->d_inode, attr_name,
567 ops[i].am_attrvalue, &ops[i].am_length,
571 ops[i].am_error = mnt_want_write_file(parfilp);
574 ops[i].am_error = xfs_attrmulti_attr_set(
575 dentry->d_inode, attr_name,
576 ops[i].am_attrvalue, ops[i].am_length,
578 mnt_drop_write_file(parfilp);
581 ops[i].am_error = mnt_want_write_file(parfilp);
584 ops[i].am_error = xfs_attrmulti_attr_remove(
585 dentry->d_inode, attr_name,
587 mnt_drop_write_file(parfilp);
590 ops[i].am_error = EINVAL;
594 if (copy_to_user(am_hreq.ops, ops, size))
595 error = XFS_ERROR(EFAULT);
607 struct xfs_inode *ip,
614 struct xfs_mount *mp = ip->i_mount;
615 struct xfs_trans *tp;
617 bool setprealloc = false;
618 bool clrprealloc = false;
622 * Only allow the sys admin to reserve space unless
623 * unwritten extents are enabled.
625 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
626 !capable(CAP_SYS_ADMIN))
627 return -XFS_ERROR(EPERM);
629 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
630 return -XFS_ERROR(EPERM);
632 if (!(filp->f_mode & FMODE_WRITE))
633 return -XFS_ERROR(EBADF);
635 if (!S_ISREG(inode->i_mode))
636 return -XFS_ERROR(EINVAL);
638 error = mnt_want_write_file(filp);
642 xfs_ilock(ip, XFS_IOLOCK_EXCL);
644 switch (bf->l_whence) {
648 bf->l_start += filp->f_pos;
651 bf->l_start += XFS_ISIZE(ip);
654 error = XFS_ERROR(EINVAL);
659 * length of <= 0 for resv/unresv/zero is invalid. length for
660 * alloc/free is ignored completely and we have no idea what userspace
661 * might have set it to, so set it to zero to allow range
665 case XFS_IOC_ZERO_RANGE:
667 case XFS_IOC_RESVSP64:
668 case XFS_IOC_UNRESVSP:
669 case XFS_IOC_UNRESVSP64:
670 if (bf->l_len <= 0) {
671 error = XFS_ERROR(EINVAL);
680 if (bf->l_start < 0 ||
681 bf->l_start > mp->m_super->s_maxbytes ||
682 bf->l_start + bf->l_len < 0 ||
683 bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) {
684 error = XFS_ERROR(EINVAL);
689 case XFS_IOC_ZERO_RANGE:
690 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
695 case XFS_IOC_RESVSP64:
696 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
701 case XFS_IOC_UNRESVSP:
702 case XFS_IOC_UNRESVSP64:
703 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
705 case XFS_IOC_ALLOCSP:
706 case XFS_IOC_ALLOCSP64:
708 case XFS_IOC_FREESP64:
709 if (bf->l_start > XFS_ISIZE(ip)) {
710 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
711 bf->l_start - XFS_ISIZE(ip), 0);
716 iattr.ia_valid = ATTR_SIZE;
717 iattr.ia_size = bf->l_start;
719 error = xfs_setattr_size(ip, &iattr);
725 error = XFS_ERROR(EINVAL);
731 tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
732 error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0);
734 xfs_trans_cancel(tp, 0);
738 xfs_ilock(ip, XFS_ILOCK_EXCL);
739 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
741 if (!(ioflags & IO_INVIS)) {
742 ip->i_d.di_mode &= ~S_ISUID;
743 if (ip->i_d.di_mode & S_IXGRP)
744 ip->i_d.di_mode &= ~S_ISGID;
745 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
749 ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
750 else if (clrprealloc)
751 ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
753 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
754 if (filp->f_flags & O_DSYNC)
755 xfs_trans_set_sync(tp);
756 error = xfs_trans_commit(tp, 0);
759 xfs_iunlock(ip, XFS_IOLOCK_EXCL);
760 mnt_drop_write_file(filp);
770 xfs_fsop_bulkreq_t bulkreq;
771 int count; /* # of records returned */
772 xfs_ino_t inlast; /* last inode number */
776 /* done = 1 if there are more stats to get and if bulkstat */
777 /* should be called again (unused here, but used in dmapi) */
779 if (!capable(CAP_SYS_ADMIN))
782 if (XFS_FORCED_SHUTDOWN(mp))
783 return -XFS_ERROR(EIO);
785 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
786 return -XFS_ERROR(EFAULT);
788 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
789 return -XFS_ERROR(EFAULT);
791 if ((count = bulkreq.icount) <= 0)
792 return -XFS_ERROR(EINVAL);
794 if (bulkreq.ubuffer == NULL)
795 return -XFS_ERROR(EINVAL);
797 if (cmd == XFS_IOC_FSINUMBERS)
798 error = xfs_inumbers(mp, &inlast, &count,
799 bulkreq.ubuffer, xfs_inumbers_fmt);
800 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
801 error = xfs_bulkstat_single(mp, &inlast,
802 bulkreq.ubuffer, &done);
803 else /* XFS_IOC_FSBULKSTAT */
804 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
805 sizeof(xfs_bstat_t), bulkreq.ubuffer,
811 if (bulkreq.ocount != NULL) {
812 if (copy_to_user(bulkreq.lastip, &inlast,
814 return -XFS_ERROR(EFAULT);
816 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
817 return -XFS_ERROR(EFAULT);
824 xfs_ioc_fsgeometry_v1(
828 xfs_fsop_geom_t fsgeo;
831 error = xfs_fs_geometry(mp, &fsgeo, 3);
836 * Caller should have passed an argument of type
837 * xfs_fsop_geom_v1_t. This is a proper subset of the
838 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
840 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
841 return -XFS_ERROR(EFAULT);
850 xfs_fsop_geom_t fsgeo;
853 error = xfs_fs_geometry(mp, &fsgeo, 4);
857 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
858 return -XFS_ERROR(EFAULT);
863 * Linux extended inode flags interface.
867 xfs_merge_ioc_xflags(
871 unsigned int xflags = start;
873 if (flags & FS_IMMUTABLE_FL)
874 xflags |= XFS_XFLAG_IMMUTABLE;
876 xflags &= ~XFS_XFLAG_IMMUTABLE;
877 if (flags & FS_APPEND_FL)
878 xflags |= XFS_XFLAG_APPEND;
880 xflags &= ~XFS_XFLAG_APPEND;
881 if (flags & FS_SYNC_FL)
882 xflags |= XFS_XFLAG_SYNC;
884 xflags &= ~XFS_XFLAG_SYNC;
885 if (flags & FS_NOATIME_FL)
886 xflags |= XFS_XFLAG_NOATIME;
888 xflags &= ~XFS_XFLAG_NOATIME;
889 if (flags & FS_NODUMP_FL)
890 xflags |= XFS_XFLAG_NODUMP;
892 xflags &= ~XFS_XFLAG_NODUMP;
901 unsigned int flags = 0;
903 if (di_flags & XFS_DIFLAG_IMMUTABLE)
904 flags |= FS_IMMUTABLE_FL;
905 if (di_flags & XFS_DIFLAG_APPEND)
906 flags |= FS_APPEND_FL;
907 if (di_flags & XFS_DIFLAG_SYNC)
909 if (di_flags & XFS_DIFLAG_NOATIME)
910 flags |= FS_NOATIME_FL;
911 if (di_flags & XFS_DIFLAG_NODUMP)
912 flags |= FS_NODUMP_FL;
924 memset(&fa, 0, sizeof(struct fsxattr));
926 xfs_ilock(ip, XFS_ILOCK_SHARED);
927 fa.fsx_xflags = xfs_ip2xflags(ip);
928 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
929 fa.fsx_projid = xfs_get_projid(ip);
933 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
934 fa.fsx_nextents = ip->i_afp->if_bytes /
935 sizeof(xfs_bmbt_rec_t);
937 fa.fsx_nextents = ip->i_d.di_anextents;
941 if (ip->i_df.if_flags & XFS_IFEXTENTS)
942 fa.fsx_nextents = ip->i_df.if_bytes /
943 sizeof(xfs_bmbt_rec_t);
945 fa.fsx_nextents = ip->i_d.di_nextents;
947 xfs_iunlock(ip, XFS_ILOCK_SHARED);
949 if (copy_to_user(arg, &fa, sizeof(fa)))
956 struct xfs_inode *ip,
959 unsigned int di_flags;
961 /* can't set PREALLOC this way, just preserve it */
962 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
963 if (xflags & XFS_XFLAG_IMMUTABLE)
964 di_flags |= XFS_DIFLAG_IMMUTABLE;
965 if (xflags & XFS_XFLAG_APPEND)
966 di_flags |= XFS_DIFLAG_APPEND;
967 if (xflags & XFS_XFLAG_SYNC)
968 di_flags |= XFS_DIFLAG_SYNC;
969 if (xflags & XFS_XFLAG_NOATIME)
970 di_flags |= XFS_DIFLAG_NOATIME;
971 if (xflags & XFS_XFLAG_NODUMP)
972 di_flags |= XFS_DIFLAG_NODUMP;
973 if (xflags & XFS_XFLAG_PROJINHERIT)
974 di_flags |= XFS_DIFLAG_PROJINHERIT;
975 if (xflags & XFS_XFLAG_NODEFRAG)
976 di_flags |= XFS_DIFLAG_NODEFRAG;
977 if (xflags & XFS_XFLAG_FILESTREAM)
978 di_flags |= XFS_DIFLAG_FILESTREAM;
979 if (S_ISDIR(ip->i_d.di_mode)) {
980 if (xflags & XFS_XFLAG_RTINHERIT)
981 di_flags |= XFS_DIFLAG_RTINHERIT;
982 if (xflags & XFS_XFLAG_NOSYMLINKS)
983 di_flags |= XFS_DIFLAG_NOSYMLINKS;
984 if (xflags & XFS_XFLAG_EXTSZINHERIT)
985 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
986 } else if (S_ISREG(ip->i_d.di_mode)) {
987 if (xflags & XFS_XFLAG_REALTIME)
988 di_flags |= XFS_DIFLAG_REALTIME;
989 if (xflags & XFS_XFLAG_EXTSIZE)
990 di_flags |= XFS_DIFLAG_EXTSIZE;
993 ip->i_d.di_flags = di_flags;
997 xfs_diflags_to_linux(
998 struct xfs_inode *ip)
1000 struct inode *inode = VFS_I(ip);
1001 unsigned int xflags = xfs_ip2xflags(ip);
1003 if (xflags & XFS_XFLAG_IMMUTABLE)
1004 inode->i_flags |= S_IMMUTABLE;
1006 inode->i_flags &= ~S_IMMUTABLE;
1007 if (xflags & XFS_XFLAG_APPEND)
1008 inode->i_flags |= S_APPEND;
1010 inode->i_flags &= ~S_APPEND;
1011 if (xflags & XFS_XFLAG_SYNC)
1012 inode->i_flags |= S_SYNC;
1014 inode->i_flags &= ~S_SYNC;
1015 if (xflags & XFS_XFLAG_NOATIME)
1016 inode->i_flags |= S_NOATIME;
1018 inode->i_flags &= ~S_NOATIME;
1021 #define FSX_PROJID 1
1022 #define FSX_EXTSIZE 2
1023 #define FSX_XFLAGS 4
1024 #define FSX_NONBLOCK 8
1032 struct xfs_mount *mp = ip->i_mount;
1033 struct xfs_trans *tp;
1034 unsigned int lock_flags = 0;
1035 struct xfs_dquot *udqp = NULL;
1036 struct xfs_dquot *pdqp = NULL;
1037 struct xfs_dquot *olddquot = NULL;
1040 trace_xfs_ioctl_setattr(ip);
1042 if (mp->m_flags & XFS_MOUNT_RDONLY)
1043 return XFS_ERROR(EROFS);
1044 if (XFS_FORCED_SHUTDOWN(mp))
1045 return XFS_ERROR(EIO);
1048 * Disallow 32bit project ids when projid32bit feature is not enabled.
1050 if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) &&
1051 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1052 return XFS_ERROR(EINVAL);
1055 * If disk quotas is on, we make sure that the dquots do exist on disk,
1056 * before we start any other transactions. Trying to do this later
1057 * is messy. We don't care to take a readlock to look at the ids
1058 * in inode here, because we can't hold it across the trans_reserve.
1059 * If the IDs do change before we take the ilock, we're covered
1060 * because the i_*dquot fields will get updated anyway.
1062 if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) {
1063 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1064 ip->i_d.di_gid, fa->fsx_projid,
1065 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1071 * For the other attributes, we acquire the inode lock and
1072 * first do an error checking pass.
1074 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
1075 code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0);
1079 lock_flags = XFS_ILOCK_EXCL;
1080 xfs_ilock(ip, lock_flags);
1083 * CAP_FOWNER overrides the following restrictions:
1085 * The user ID of the calling process must be equal
1086 * to the file owner ID, except in cases where the
1087 * CAP_FSETID capability is applicable.
1089 if (!inode_owner_or_capable(VFS_I(ip))) {
1090 code = XFS_ERROR(EPERM);
1095 * Do a quota reservation only if projid is actually going to change.
1096 * Only allow changing of projid from init_user_ns since it is a
1097 * non user namespace aware identifier.
1099 if (mask & FSX_PROJID) {
1100 if (current_user_ns() != &init_user_ns) {
1101 code = XFS_ERROR(EINVAL);
1105 if (XFS_IS_QUOTA_RUNNING(mp) &&
1106 XFS_IS_PQUOTA_ON(mp) &&
1107 xfs_get_projid(ip) != fa->fsx_projid) {
1109 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL,
1110 pdqp, capable(CAP_FOWNER) ?
1111 XFS_QMOPT_FORCE_RES : 0);
1112 if (code) /* out of quota */
1117 if (mask & FSX_EXTSIZE) {
1119 * Can't change extent size if any extents are allocated.
1121 if (ip->i_d.di_nextents &&
1122 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) !=
1124 code = XFS_ERROR(EINVAL); /* EFBIG? */
1129 * Extent size must be a multiple of the appropriate block
1130 * size, if set at all. It must also be smaller than the
1131 * maximum extent size supported by the filesystem.
1133 * Also, for non-realtime files, limit the extent size hint to
1134 * half the size of the AGs in the filesystem so alignment
1135 * doesn't result in extents larger than an AG.
1137 if (fa->fsx_extsize != 0) {
1139 xfs_fsblock_t extsize_fsb;
1141 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1142 if (extsize_fsb > MAXEXTLEN) {
1143 code = XFS_ERROR(EINVAL);
1147 if (XFS_IS_REALTIME_INODE(ip) ||
1148 ((mask & FSX_XFLAGS) &&
1149 (fa->fsx_xflags & XFS_XFLAG_REALTIME))) {
1150 size = mp->m_sb.sb_rextsize <<
1151 mp->m_sb.sb_blocklog;
1153 size = mp->m_sb.sb_blocksize;
1154 if (extsize_fsb > mp->m_sb.sb_agblocks / 2) {
1155 code = XFS_ERROR(EINVAL);
1160 if (fa->fsx_extsize % size) {
1161 code = XFS_ERROR(EINVAL);
1168 if (mask & FSX_XFLAGS) {
1170 * Can't change realtime flag if any extents are allocated.
1172 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1173 (XFS_IS_REALTIME_INODE(ip)) !=
1174 (fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1175 code = XFS_ERROR(EINVAL); /* EFBIG? */
1180 * If realtime flag is set then must have realtime data.
1182 if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1183 if ((mp->m_sb.sb_rblocks == 0) ||
1184 (mp->m_sb.sb_rextsize == 0) ||
1185 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) {
1186 code = XFS_ERROR(EINVAL);
1192 * Can't modify an immutable/append-only file unless
1193 * we have appropriate permission.
1195 if ((ip->i_d.di_flags &
1196 (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) ||
1198 (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) &&
1199 !capable(CAP_LINUX_IMMUTABLE)) {
1200 code = XFS_ERROR(EPERM);
1205 xfs_trans_ijoin(tp, ip, 0);
1208 * Change file ownership. Must be the owner or privileged.
1210 if (mask & FSX_PROJID) {
1212 * CAP_FSETID overrides the following restrictions:
1214 * The set-user-ID and set-group-ID bits of a file will be
1215 * cleared upon successful return from chown()
1217 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
1218 !inode_capable(VFS_I(ip), CAP_FSETID))
1219 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
1222 * Change the ownerships and register quota modifications
1223 * in the transaction.
1225 if (xfs_get_projid(ip) != fa->fsx_projid) {
1226 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1227 olddquot = xfs_qm_vop_chown(tp, ip,
1228 &ip->i_pdquot, pdqp);
1230 xfs_set_projid(ip, fa->fsx_projid);
1233 * We may have to rev the inode as well as
1234 * the superblock version number since projids didn't
1235 * exist before DINODE_VERSION_2 and SB_VERSION_NLINK.
1237 if (ip->i_d.di_version == 1)
1238 xfs_bump_ino_vers2(tp, ip);
1243 if (mask & FSX_EXTSIZE)
1244 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1245 if (mask & FSX_XFLAGS) {
1246 xfs_set_diflags(ip, fa->fsx_xflags);
1247 xfs_diflags_to_linux(ip);
1250 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1251 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1253 XFS_STATS_INC(xs_ig_attrchg);
1256 * If this is a synchronous mount, make sure that the
1257 * transaction goes to disk before returning to the user.
1258 * This is slightly sub-optimal in that truncates require
1259 * two sync transactions instead of one for wsync filesystems.
1260 * One for the truncate and one for the timestamps since we
1261 * don't want to change the timestamps unless we're sure the
1262 * truncate worked. Truncates are less than 1% of the laddis
1263 * mix so this probably isn't worth the trouble to optimize.
1265 if (mp->m_flags & XFS_MOUNT_WSYNC)
1266 xfs_trans_set_sync(tp);
1267 code = xfs_trans_commit(tp, 0);
1268 xfs_iunlock(ip, lock_flags);
1271 * Release any dquot(s) the inode had kept before chown.
1273 xfs_qm_dqrele(olddquot);
1274 xfs_qm_dqrele(udqp);
1275 xfs_qm_dqrele(pdqp);
1280 xfs_qm_dqrele(udqp);
1281 xfs_qm_dqrele(pdqp);
1282 xfs_trans_cancel(tp, 0);
1284 xfs_iunlock(ip, lock_flags);
1298 if (copy_from_user(&fa, arg, sizeof(fa)))
1301 mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID;
1302 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1303 mask |= FSX_NONBLOCK;
1305 error = mnt_want_write_file(filp);
1308 error = xfs_ioctl_setattr(ip, &fa, mask);
1309 mnt_drop_write_file(filp);
1320 flags = xfs_di2lxflags(ip->i_d.di_flags);
1321 if (copy_to_user(arg, &flags, sizeof(flags)))
1337 if (copy_from_user(&flags, arg, sizeof(flags)))
1340 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1341 FS_NOATIME_FL | FS_NODUMP_FL | \
1346 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1347 mask |= FSX_NONBLOCK;
1348 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1350 error = mnt_want_write_file(filp);
1353 error = xfs_ioctl_setattr(ip, &fa, mask);
1354 mnt_drop_write_file(filp);
1359 xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full)
1361 struct getbmap __user *base = *ap;
1363 /* copy only getbmap portion (not getbmapx) */
1364 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1365 return XFS_ERROR(EFAULT);
1367 *ap += sizeof(struct getbmap);
1373 struct xfs_inode *ip,
1378 struct getbmapx bmx;
1381 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1382 return -XFS_ERROR(EFAULT);
1384 if (bmx.bmv_count < 2)
1385 return -XFS_ERROR(EINVAL);
1387 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1388 if (ioflags & IO_INVIS)
1389 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1391 error = xfs_getbmap(ip, &bmx, xfs_getbmap_format,
1392 (struct getbmap *)arg+1);
1396 /* copy back header - only size of getbmap */
1397 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1398 return -XFS_ERROR(EFAULT);
1403 xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full)
1405 struct getbmapx __user *base = *ap;
1407 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1408 return XFS_ERROR(EFAULT);
1410 *ap += sizeof(struct getbmapx);
1416 struct xfs_inode *ip,
1419 struct getbmapx bmx;
1422 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1423 return -XFS_ERROR(EFAULT);
1425 if (bmx.bmv_count < 2)
1426 return -XFS_ERROR(EINVAL);
1428 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1429 return -XFS_ERROR(EINVAL);
1431 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1432 (struct getbmapx *)arg+1);
1436 /* copy back header */
1437 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1438 return -XFS_ERROR(EFAULT);
1447 xfs_inode_t *ip, *tip;
1451 /* Pull information for the target fd */
1452 f = fdget((int)sxp->sx_fdtarget);
1454 error = XFS_ERROR(EINVAL);
1458 if (!(f.file->f_mode & FMODE_WRITE) ||
1459 !(f.file->f_mode & FMODE_READ) ||
1460 (f.file->f_flags & O_APPEND)) {
1461 error = XFS_ERROR(EBADF);
1465 tmp = fdget((int)sxp->sx_fdtmp);
1467 error = XFS_ERROR(EINVAL);
1471 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1472 !(tmp.file->f_mode & FMODE_READ) ||
1473 (tmp.file->f_flags & O_APPEND)) {
1474 error = XFS_ERROR(EBADF);
1475 goto out_put_tmp_file;
1478 if (IS_SWAPFILE(file_inode(f.file)) ||
1479 IS_SWAPFILE(file_inode(tmp.file))) {
1480 error = XFS_ERROR(EINVAL);
1481 goto out_put_tmp_file;
1484 ip = XFS_I(file_inode(f.file));
1485 tip = XFS_I(file_inode(tmp.file));
1487 if (ip->i_mount != tip->i_mount) {
1488 error = XFS_ERROR(EINVAL);
1489 goto out_put_tmp_file;
1492 if (ip->i_ino == tip->i_ino) {
1493 error = XFS_ERROR(EINVAL);
1494 goto out_put_tmp_file;
1497 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1498 error = XFS_ERROR(EIO);
1499 goto out_put_tmp_file;
1502 error = xfs_swap_extents(ip, tip, sxp);
1513 * Note: some of the ioctl's return positive numbers as a
1514 * byte count indicating success, such as readlink_by_handle.
1515 * So we don't "sign flip" like most other routines. This means
1516 * true errors need to be returned as a negative value.
1524 struct inode *inode = file_inode(filp);
1525 struct xfs_inode *ip = XFS_I(inode);
1526 struct xfs_mount *mp = ip->i_mount;
1527 void __user *arg = (void __user *)p;
1531 if (filp->f_mode & FMODE_NOCMTIME)
1532 ioflags |= IO_INVIS;
1534 trace_xfs_file_ioctl(ip);
1538 return xfs_ioc_trim(mp, arg);
1539 case XFS_IOC_ALLOCSP:
1540 case XFS_IOC_FREESP:
1541 case XFS_IOC_RESVSP:
1542 case XFS_IOC_UNRESVSP:
1543 case XFS_IOC_ALLOCSP64:
1544 case XFS_IOC_FREESP64:
1545 case XFS_IOC_RESVSP64:
1546 case XFS_IOC_UNRESVSP64:
1547 case XFS_IOC_ZERO_RANGE: {
1550 if (copy_from_user(&bf, arg, sizeof(bf)))
1551 return -XFS_ERROR(EFAULT);
1552 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
1554 case XFS_IOC_DIOINFO: {
1556 xfs_buftarg_t *target =
1557 XFS_IS_REALTIME_INODE(ip) ?
1558 mp->m_rtdev_targp : mp->m_ddev_targp;
1560 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1561 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1563 if (copy_to_user(arg, &da, sizeof(da)))
1564 return -XFS_ERROR(EFAULT);
1568 case XFS_IOC_FSBULKSTAT_SINGLE:
1569 case XFS_IOC_FSBULKSTAT:
1570 case XFS_IOC_FSINUMBERS:
1571 return xfs_ioc_bulkstat(mp, cmd, arg);
1573 case XFS_IOC_FSGEOMETRY_V1:
1574 return xfs_ioc_fsgeometry_v1(mp, arg);
1576 case XFS_IOC_FSGEOMETRY:
1577 return xfs_ioc_fsgeometry(mp, arg);
1579 case XFS_IOC_GETVERSION:
1580 return put_user(inode->i_generation, (int __user *)arg);
1582 case XFS_IOC_FSGETXATTR:
1583 return xfs_ioc_fsgetxattr(ip, 0, arg);
1584 case XFS_IOC_FSGETXATTRA:
1585 return xfs_ioc_fsgetxattr(ip, 1, arg);
1586 case XFS_IOC_FSSETXATTR:
1587 return xfs_ioc_fssetxattr(ip, filp, arg);
1588 case XFS_IOC_GETXFLAGS:
1589 return xfs_ioc_getxflags(ip, arg);
1590 case XFS_IOC_SETXFLAGS:
1591 return xfs_ioc_setxflags(ip, filp, arg);
1593 case XFS_IOC_FSSETDM: {
1594 struct fsdmidata dmi;
1596 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1597 return -XFS_ERROR(EFAULT);
1599 error = mnt_want_write_file(filp);
1603 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1605 mnt_drop_write_file(filp);
1609 case XFS_IOC_GETBMAP:
1610 case XFS_IOC_GETBMAPA:
1611 return xfs_ioc_getbmap(ip, ioflags, cmd, arg);
1613 case XFS_IOC_GETBMAPX:
1614 return xfs_ioc_getbmapx(ip, arg);
1616 case XFS_IOC_FD_TO_HANDLE:
1617 case XFS_IOC_PATH_TO_HANDLE:
1618 case XFS_IOC_PATH_TO_FSHANDLE: {
1619 xfs_fsop_handlereq_t hreq;
1621 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1622 return -XFS_ERROR(EFAULT);
1623 return xfs_find_handle(cmd, &hreq);
1625 case XFS_IOC_OPEN_BY_HANDLE: {
1626 xfs_fsop_handlereq_t hreq;
1628 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1629 return -XFS_ERROR(EFAULT);
1630 return xfs_open_by_handle(filp, &hreq);
1632 case XFS_IOC_FSSETDM_BY_HANDLE:
1633 return xfs_fssetdm_by_handle(filp, arg);
1635 case XFS_IOC_READLINK_BY_HANDLE: {
1636 xfs_fsop_handlereq_t hreq;
1638 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1639 return -XFS_ERROR(EFAULT);
1640 return xfs_readlink_by_handle(filp, &hreq);
1642 case XFS_IOC_ATTRLIST_BY_HANDLE:
1643 return xfs_attrlist_by_handle(filp, arg);
1645 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1646 return xfs_attrmulti_by_handle(filp, arg);
1648 case XFS_IOC_SWAPEXT: {
1649 struct xfs_swapext sxp;
1651 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1652 return -XFS_ERROR(EFAULT);
1653 error = mnt_want_write_file(filp);
1656 error = xfs_ioc_swapext(&sxp);
1657 mnt_drop_write_file(filp);
1661 case XFS_IOC_FSCOUNTS: {
1662 xfs_fsop_counts_t out;
1664 error = xfs_fs_counts(mp, &out);
1668 if (copy_to_user(arg, &out, sizeof(out)))
1669 return -XFS_ERROR(EFAULT);
1673 case XFS_IOC_SET_RESBLKS: {
1674 xfs_fsop_resblks_t inout;
1677 if (!capable(CAP_SYS_ADMIN))
1680 if (mp->m_flags & XFS_MOUNT_RDONLY)
1681 return -XFS_ERROR(EROFS);
1683 if (copy_from_user(&inout, arg, sizeof(inout)))
1684 return -XFS_ERROR(EFAULT);
1686 error = mnt_want_write_file(filp);
1690 /* input parameter is passed in resblks field of structure */
1692 error = xfs_reserve_blocks(mp, &in, &inout);
1693 mnt_drop_write_file(filp);
1697 if (copy_to_user(arg, &inout, sizeof(inout)))
1698 return -XFS_ERROR(EFAULT);
1702 case XFS_IOC_GET_RESBLKS: {
1703 xfs_fsop_resblks_t out;
1705 if (!capable(CAP_SYS_ADMIN))
1708 error = xfs_reserve_blocks(mp, NULL, &out);
1712 if (copy_to_user(arg, &out, sizeof(out)))
1713 return -XFS_ERROR(EFAULT);
1718 case XFS_IOC_FSGROWFSDATA: {
1719 xfs_growfs_data_t in;
1721 if (copy_from_user(&in, arg, sizeof(in)))
1722 return -XFS_ERROR(EFAULT);
1724 error = mnt_want_write_file(filp);
1727 error = xfs_growfs_data(mp, &in);
1728 mnt_drop_write_file(filp);
1732 case XFS_IOC_FSGROWFSLOG: {
1733 xfs_growfs_log_t in;
1735 if (copy_from_user(&in, arg, sizeof(in)))
1736 return -XFS_ERROR(EFAULT);
1738 error = mnt_want_write_file(filp);
1741 error = xfs_growfs_log(mp, &in);
1742 mnt_drop_write_file(filp);
1746 case XFS_IOC_FSGROWFSRT: {
1749 if (copy_from_user(&in, arg, sizeof(in)))
1750 return -XFS_ERROR(EFAULT);
1752 error = mnt_want_write_file(filp);
1755 error = xfs_growfs_rt(mp, &in);
1756 mnt_drop_write_file(filp);
1760 case XFS_IOC_GOINGDOWN: {
1763 if (!capable(CAP_SYS_ADMIN))
1766 if (get_user(in, (__uint32_t __user *)arg))
1767 return -XFS_ERROR(EFAULT);
1769 error = xfs_fs_goingdown(mp, in);
1773 case XFS_IOC_ERROR_INJECTION: {
1774 xfs_error_injection_t in;
1776 if (!capable(CAP_SYS_ADMIN))
1779 if (copy_from_user(&in, arg, sizeof(in)))
1780 return -XFS_ERROR(EFAULT);
1782 error = xfs_errortag_add(in.errtag, mp);
1786 case XFS_IOC_ERROR_CLEARALL:
1787 if (!capable(CAP_SYS_ADMIN))
1790 error = xfs_errortag_clearall(mp, 1);
1793 case XFS_IOC_FREE_EOFBLOCKS: {
1794 struct xfs_fs_eofblocks eofb;
1795 struct xfs_eofblocks keofb;
1797 if (!capable(CAP_SYS_ADMIN))
1800 if (mp->m_flags & XFS_MOUNT_RDONLY)
1801 return -XFS_ERROR(EROFS);
1803 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1804 return -XFS_ERROR(EFAULT);
1806 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
1810 return -xfs_icache_free_eofblocks(mp, &keofb);