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"
24 #include "xfs_mount.h"
25 #include "xfs_inode.h"
26 #include "xfs_ioctl.h"
27 #include "xfs_alloc.h"
28 #include "xfs_rtalloc.h"
29 #include "xfs_itable.h"
30 #include "xfs_error.h"
33 #include "xfs_bmap_util.h"
34 #include "xfs_fsops.h"
35 #include "xfs_discard.h"
36 #include "xfs_quota.h"
37 #include "xfs_export.h"
38 #include "xfs_trace.h"
39 #include "xfs_icache.h"
40 #include "xfs_symlink.h"
41 #include "xfs_trans.h"
45 #include <linux/capability.h>
46 #include <linux/dcache.h>
47 #include <linux/mount.h>
48 #include <linux/namei.h>
49 #include <linux/pagemap.h>
50 #include <linux/slab.h>
51 #include <linux/exportfs.h>
54 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
55 * a file or fs handle.
57 * XFS_IOC_PATH_TO_FSHANDLE
58 * returns fs handle for a mount point or path within that mount point
59 * XFS_IOC_FD_TO_HANDLE
60 * returns full handle for a FD opened in user space
61 * XFS_IOC_PATH_TO_HANDLE
62 * returns full handle for a path
67 xfs_fsop_handlereq_t *hreq)
77 if (cmd == XFS_IOC_FD_TO_HANDLE) {
81 inode = file_inode(f.file);
83 error = user_lpath((const char __user *)hreq->path, &path);
86 inode = d_inode(path.dentry);
91 * We can only generate handles for inodes residing on a XFS filesystem,
92 * and only for regular files, directories or symbolic links.
95 if (inode->i_sb->s_magic != XFS_SB_MAGIC)
99 if (!S_ISREG(inode->i_mode) &&
100 !S_ISDIR(inode->i_mode) &&
101 !S_ISLNK(inode->i_mode))
105 memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
107 if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
109 * This handle only contains an fsid, zero the rest.
111 memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
112 hsize = sizeof(xfs_fsid_t);
114 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
115 sizeof(handle.ha_fid.fid_len);
116 handle.ha_fid.fid_pad = 0;
117 handle.ha_fid.fid_gen = inode->i_generation;
118 handle.ha_fid.fid_ino = ip->i_ino;
120 hsize = XFS_HSIZE(handle);
124 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
125 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
131 if (cmd == XFS_IOC_FD_TO_HANDLE)
139 * No need to do permission checks on the various pathname components
140 * as the handle operations are privileged.
143 xfs_handle_acceptable(
145 struct dentry *dentry)
151 * Convert userspace handle data into a dentry.
154 xfs_handle_to_dentry(
155 struct file *parfilp,
156 void __user *uhandle,
160 struct xfs_fid64 fid;
163 * Only allow handle opens under a directory.
165 if (!S_ISDIR(file_inode(parfilp)->i_mode))
166 return ERR_PTR(-ENOTDIR);
168 if (hlen != sizeof(xfs_handle_t))
169 return ERR_PTR(-EINVAL);
170 if (copy_from_user(&handle, uhandle, hlen))
171 return ERR_PTR(-EFAULT);
172 if (handle.ha_fid.fid_len !=
173 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
174 return ERR_PTR(-EINVAL);
176 memset(&fid, 0, sizeof(struct fid));
177 fid.ino = handle.ha_fid.fid_ino;
178 fid.gen = handle.ha_fid.fid_gen;
180 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
181 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
182 xfs_handle_acceptable, NULL);
185 STATIC struct dentry *
186 xfs_handlereq_to_dentry(
187 struct file *parfilp,
188 xfs_fsop_handlereq_t *hreq)
190 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
195 struct file *parfilp,
196 xfs_fsop_handlereq_t *hreq)
198 const struct cred *cred = current_cred();
204 struct dentry *dentry;
208 if (!capable(CAP_SYS_ADMIN))
211 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
213 return PTR_ERR(dentry);
214 inode = d_inode(dentry);
216 /* Restrict xfs_open_by_handle to directories & regular files. */
217 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
222 #if BITS_PER_LONG != 32
223 hreq->oflags |= O_LARGEFILE;
226 permflag = hreq->oflags;
227 fmode = OPEN_FMODE(permflag);
228 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
229 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
234 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
239 /* Can't write directories. */
240 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
245 fd = get_unused_fd_flags(0);
251 path.mnt = parfilp->f_path.mnt;
252 path.dentry = dentry;
253 filp = dentry_open(&path, hreq->oflags, cred);
257 return PTR_ERR(filp);
260 if (S_ISREG(inode->i_mode)) {
261 filp->f_flags |= O_NOATIME;
262 filp->f_mode |= FMODE_NOCMTIME;
265 fd_install(fd, filp);
274 xfs_readlink_by_handle(
275 struct file *parfilp,
276 xfs_fsop_handlereq_t *hreq)
278 struct dentry *dentry;
282 if (!capable(CAP_SYS_ADMIN))
285 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
287 return PTR_ERR(dentry);
289 /* Restrict this handle operation to symlinks only. */
290 if (!d_inode(dentry)->i_op->readlink) {
295 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
300 error = d_inode(dentry)->i_op->readlink(dentry, hreq->ohandle, olen);
313 xfs_mount_t *mp = ip->i_mount;
317 if (!capable(CAP_SYS_ADMIN))
320 if (XFS_FORCED_SHUTDOWN(mp))
323 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
327 xfs_ilock(ip, XFS_ILOCK_EXCL);
328 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
330 ip->i_d.di_dmevmask = evmask;
331 ip->i_d.di_dmstate = state;
333 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
334 error = xfs_trans_commit(tp);
340 xfs_fssetdm_by_handle(
341 struct file *parfilp,
345 struct fsdmidata fsd;
346 xfs_fsop_setdm_handlereq_t dmhreq;
347 struct dentry *dentry;
349 if (!capable(CAP_MKNOD))
351 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
354 error = mnt_want_write_file(parfilp);
358 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
359 if (IS_ERR(dentry)) {
360 mnt_drop_write_file(parfilp);
361 return PTR_ERR(dentry);
364 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
369 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
374 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
378 mnt_drop_write_file(parfilp);
384 xfs_attrlist_by_handle(
385 struct file *parfilp,
389 attrlist_cursor_kern_t *cursor;
390 xfs_fsop_attrlist_handlereq_t al_hreq;
391 struct dentry *dentry;
394 if (!capable(CAP_SYS_ADMIN))
396 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
398 if (al_hreq.buflen < sizeof(struct attrlist) ||
399 al_hreq.buflen > XFS_XATTR_LIST_MAX)
403 * Reject flags, only allow namespaces.
405 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
408 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
410 return PTR_ERR(dentry);
412 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
416 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
417 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
418 al_hreq.flags, cursor);
422 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
433 xfs_attrmulti_attr_get(
436 unsigned char __user *ubuf,
443 if (*len > XFS_XATTR_SIZE_MAX)
445 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
449 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
453 if (copy_to_user(ubuf, kbuf, *len))
462 xfs_attrmulti_attr_set(
465 const unsigned char __user *ubuf,
472 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
474 if (len > XFS_XATTR_SIZE_MAX)
477 kbuf = memdup_user(ubuf, len);
479 return PTR_ERR(kbuf);
481 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
483 xfs_forget_acl(inode, name, flags);
489 xfs_attrmulti_attr_remove(
496 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
498 error = xfs_attr_remove(XFS_I(inode), name, flags);
500 xfs_forget_acl(inode, name, flags);
505 xfs_attrmulti_by_handle(
506 struct file *parfilp,
510 xfs_attr_multiop_t *ops;
511 xfs_fsop_attrmulti_handlereq_t am_hreq;
512 struct dentry *dentry;
513 unsigned int i, size;
514 unsigned char *attr_name;
516 if (!capable(CAP_SYS_ADMIN))
518 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
522 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
525 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
527 return PTR_ERR(dentry);
530 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
531 if (!size || size > 16 * PAGE_SIZE)
534 ops = memdup_user(am_hreq.ops, size);
536 error = PTR_ERR(ops);
541 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
546 for (i = 0; i < am_hreq.opcount; i++) {
547 ops[i].am_error = strncpy_from_user((char *)attr_name,
548 ops[i].am_attrname, MAXNAMELEN);
549 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
551 if (ops[i].am_error < 0)
554 switch (ops[i].am_opcode) {
556 ops[i].am_error = xfs_attrmulti_attr_get(
557 d_inode(dentry), attr_name,
558 ops[i].am_attrvalue, &ops[i].am_length,
562 ops[i].am_error = mnt_want_write_file(parfilp);
565 ops[i].am_error = xfs_attrmulti_attr_set(
566 d_inode(dentry), attr_name,
567 ops[i].am_attrvalue, ops[i].am_length,
569 mnt_drop_write_file(parfilp);
572 ops[i].am_error = mnt_want_write_file(parfilp);
575 ops[i].am_error = xfs_attrmulti_attr_remove(
576 d_inode(dentry), attr_name,
578 mnt_drop_write_file(parfilp);
581 ops[i].am_error = -EINVAL;
585 if (copy_to_user(am_hreq.ops, ops, size))
602 struct inode *inode = file_inode(filp);
603 struct xfs_inode *ip = XFS_I(inode);
605 enum xfs_prealloc_flags flags = 0;
606 uint iolock = XFS_IOLOCK_EXCL;
610 * Only allow the sys admin to reserve space unless
611 * unwritten extents are enabled.
613 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
614 !capable(CAP_SYS_ADMIN))
617 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
620 if (!(filp->f_mode & FMODE_WRITE))
623 if (!S_ISREG(inode->i_mode))
626 if (filp->f_flags & O_DSYNC)
627 flags |= XFS_PREALLOC_SYNC;
628 if (filp->f_mode & FMODE_NOCMTIME)
629 flags |= XFS_PREALLOC_INVISIBLE;
631 error = mnt_want_write_file(filp);
635 xfs_ilock(ip, iolock);
636 error = xfs_break_layouts(inode, &iolock, false);
640 xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
641 iolock |= XFS_MMAPLOCK_EXCL;
643 switch (bf->l_whence) {
647 bf->l_start += filp->f_pos;
650 bf->l_start += XFS_ISIZE(ip);
658 * length of <= 0 for resv/unresv/zero is invalid. length for
659 * alloc/free is ignored completely and we have no idea what userspace
660 * might have set it to, so set it to zero to allow range
664 case XFS_IOC_ZERO_RANGE:
666 case XFS_IOC_RESVSP64:
667 case XFS_IOC_UNRESVSP:
668 case XFS_IOC_UNRESVSP64:
669 if (bf->l_len <= 0) {
679 if (bf->l_start < 0 ||
680 bf->l_start > inode->i_sb->s_maxbytes ||
681 bf->l_start + bf->l_len < 0 ||
682 bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
688 case XFS_IOC_ZERO_RANGE:
689 flags |= XFS_PREALLOC_SET;
690 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
693 case XFS_IOC_RESVSP64:
694 flags |= XFS_PREALLOC_SET;
695 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
698 case XFS_IOC_UNRESVSP:
699 case XFS_IOC_UNRESVSP64:
700 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
702 case XFS_IOC_ALLOCSP:
703 case XFS_IOC_ALLOCSP64:
705 case XFS_IOC_FREESP64:
706 flags |= XFS_PREALLOC_CLEAR;
707 if (bf->l_start > XFS_ISIZE(ip)) {
708 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
709 bf->l_start - XFS_ISIZE(ip), 0);
714 iattr.ia_valid = ATTR_SIZE;
715 iattr.ia_size = bf->l_start;
717 error = xfs_setattr_size(ip, &iattr);
727 error = xfs_update_prealloc_flags(ip, flags);
730 xfs_iunlock(ip, iolock);
731 mnt_drop_write_file(filp);
741 xfs_fsop_bulkreq_t bulkreq;
742 int count; /* # of records returned */
743 xfs_ino_t inlast; /* last inode number */
747 /* done = 1 if there are more stats to get and if bulkstat */
748 /* should be called again (unused here, but used in dmapi) */
750 if (!capable(CAP_SYS_ADMIN))
753 if (XFS_FORCED_SHUTDOWN(mp))
756 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
759 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
762 if ((count = bulkreq.icount) <= 0)
765 if (bulkreq.ubuffer == NULL)
768 if (cmd == XFS_IOC_FSINUMBERS)
769 error = xfs_inumbers(mp, &inlast, &count,
770 bulkreq.ubuffer, xfs_inumbers_fmt);
771 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
772 error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer,
773 sizeof(xfs_bstat_t), NULL, &done);
774 else /* XFS_IOC_FSBULKSTAT */
775 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
776 sizeof(xfs_bstat_t), bulkreq.ubuffer,
782 if (bulkreq.ocount != NULL) {
783 if (copy_to_user(bulkreq.lastip, &inlast,
787 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
795 xfs_ioc_fsgeometry_v1(
799 xfs_fsop_geom_t fsgeo;
802 error = xfs_fs_geometry(mp, &fsgeo, 3);
807 * Caller should have passed an argument of type
808 * xfs_fsop_geom_v1_t. This is a proper subset of the
809 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
811 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
821 xfs_fsop_geom_t fsgeo;
824 error = xfs_fs_geometry(mp, &fsgeo, 4);
828 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
834 * Linux extended inode flags interface.
838 xfs_merge_ioc_xflags(
842 unsigned int xflags = start;
844 if (flags & FS_IMMUTABLE_FL)
845 xflags |= FS_XFLAG_IMMUTABLE;
847 xflags &= ~FS_XFLAG_IMMUTABLE;
848 if (flags & FS_APPEND_FL)
849 xflags |= FS_XFLAG_APPEND;
851 xflags &= ~FS_XFLAG_APPEND;
852 if (flags & FS_SYNC_FL)
853 xflags |= FS_XFLAG_SYNC;
855 xflags &= ~FS_XFLAG_SYNC;
856 if (flags & FS_NOATIME_FL)
857 xflags |= FS_XFLAG_NOATIME;
859 xflags &= ~FS_XFLAG_NOATIME;
860 if (flags & FS_NODUMP_FL)
861 xflags |= FS_XFLAG_NODUMP;
863 xflags &= ~FS_XFLAG_NODUMP;
872 unsigned int flags = 0;
874 if (di_flags & XFS_DIFLAG_IMMUTABLE)
875 flags |= FS_IMMUTABLE_FL;
876 if (di_flags & XFS_DIFLAG_APPEND)
877 flags |= FS_APPEND_FL;
878 if (di_flags & XFS_DIFLAG_SYNC)
880 if (di_flags & XFS_DIFLAG_NOATIME)
881 flags |= FS_NOATIME_FL;
882 if (di_flags & XFS_DIFLAG_NODUMP)
883 flags |= FS_NODUMP_FL;
895 memset(&fa, 0, sizeof(struct fsxattr));
897 xfs_ilock(ip, XFS_ILOCK_SHARED);
898 fa.fsx_xflags = xfs_ip2xflags(ip);
899 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
900 fa.fsx_projid = xfs_get_projid(ip);
904 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
905 fa.fsx_nextents = ip->i_afp->if_bytes /
906 sizeof(xfs_bmbt_rec_t);
908 fa.fsx_nextents = ip->i_d.di_anextents;
912 if (ip->i_df.if_flags & XFS_IFEXTENTS)
913 fa.fsx_nextents = ip->i_df.if_bytes /
914 sizeof(xfs_bmbt_rec_t);
916 fa.fsx_nextents = ip->i_d.di_nextents;
918 xfs_iunlock(ip, XFS_ILOCK_SHARED);
920 if (copy_to_user(arg, &fa, sizeof(fa)))
927 struct xfs_inode *ip,
930 unsigned int di_flags;
933 /* can't set PREALLOC this way, just preserve it */
934 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
935 if (xflags & FS_XFLAG_IMMUTABLE)
936 di_flags |= XFS_DIFLAG_IMMUTABLE;
937 if (xflags & FS_XFLAG_APPEND)
938 di_flags |= XFS_DIFLAG_APPEND;
939 if (xflags & FS_XFLAG_SYNC)
940 di_flags |= XFS_DIFLAG_SYNC;
941 if (xflags & FS_XFLAG_NOATIME)
942 di_flags |= XFS_DIFLAG_NOATIME;
943 if (xflags & FS_XFLAG_NODUMP)
944 di_flags |= XFS_DIFLAG_NODUMP;
945 if (xflags & FS_XFLAG_NODEFRAG)
946 di_flags |= XFS_DIFLAG_NODEFRAG;
947 if (xflags & FS_XFLAG_FILESTREAM)
948 di_flags |= XFS_DIFLAG_FILESTREAM;
949 if (S_ISDIR(VFS_I(ip)->i_mode)) {
950 if (xflags & FS_XFLAG_RTINHERIT)
951 di_flags |= XFS_DIFLAG_RTINHERIT;
952 if (xflags & FS_XFLAG_NOSYMLINKS)
953 di_flags |= XFS_DIFLAG_NOSYMLINKS;
954 if (xflags & FS_XFLAG_EXTSZINHERIT)
955 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
956 if (xflags & FS_XFLAG_PROJINHERIT)
957 di_flags |= XFS_DIFLAG_PROJINHERIT;
958 } else if (S_ISREG(VFS_I(ip)->i_mode)) {
959 if (xflags & FS_XFLAG_REALTIME)
960 di_flags |= XFS_DIFLAG_REALTIME;
961 if (xflags & FS_XFLAG_EXTSIZE)
962 di_flags |= XFS_DIFLAG_EXTSIZE;
964 ip->i_d.di_flags = di_flags;
966 /* diflags2 only valid for v3 inodes. */
967 if (ip->i_d.di_version < 3)
971 if (xflags & FS_XFLAG_DAX)
972 di_flags2 |= XFS_DIFLAG2_DAX;
974 ip->i_d.di_flags2 = di_flags2;
979 xfs_diflags_to_linux(
980 struct xfs_inode *ip)
982 struct inode *inode = VFS_I(ip);
983 unsigned int xflags = xfs_ip2xflags(ip);
985 if (xflags & FS_XFLAG_IMMUTABLE)
986 inode->i_flags |= S_IMMUTABLE;
988 inode->i_flags &= ~S_IMMUTABLE;
989 if (xflags & FS_XFLAG_APPEND)
990 inode->i_flags |= S_APPEND;
992 inode->i_flags &= ~S_APPEND;
993 if (xflags & FS_XFLAG_SYNC)
994 inode->i_flags |= S_SYNC;
996 inode->i_flags &= ~S_SYNC;
997 if (xflags & FS_XFLAG_NOATIME)
998 inode->i_flags |= S_NOATIME;
1000 inode->i_flags &= ~S_NOATIME;
1001 if (xflags & FS_XFLAG_DAX)
1002 inode->i_flags |= S_DAX;
1004 inode->i_flags &= ~S_DAX;
1009 xfs_ioctl_setattr_xflags(
1010 struct xfs_trans *tp,
1011 struct xfs_inode *ip,
1014 struct xfs_mount *mp = ip->i_mount;
1016 /* Can't change realtime flag if any extents are allocated. */
1017 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1018 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1021 /* If realtime flag is set then must have realtime device */
1022 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1023 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1024 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
1029 * Can't modify an immutable/append-only file unless
1030 * we have appropriate permission.
1032 if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
1033 (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
1034 !capable(CAP_LINUX_IMMUTABLE))
1037 xfs_set_diflags(ip, fa->fsx_xflags);
1038 xfs_diflags_to_linux(ip);
1039 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1040 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1041 XFS_STATS_INC(mp, xs_ig_attrchg);
1046 * If we are changing DAX flags, we have to ensure the file is clean and any
1047 * cached objects in the address space are invalidated and removed. This
1048 * requires us to lock out other IO and page faults similar to a truncate
1049 * operation. The locks need to be held until the transaction has been committed
1050 * so that the cache invalidation is atomic with respect to the DAX flag
1054 xfs_ioctl_setattr_dax_invalidate(
1055 struct xfs_inode *ip,
1059 struct inode *inode = VFS_I(ip);
1065 * It is only valid to set the DAX flag on regular files and
1066 * directories on filesystems where the block size is equal to the page
1067 * size. On directories it serves as an inherit hint.
1069 if (fa->fsx_xflags & FS_XFLAG_DAX) {
1070 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
1072 if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE)
1076 /* If the DAX state is not changing, we have nothing to do here. */
1077 if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
1079 if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
1082 /* lock, flush and invalidate mapping in preparation for flag change */
1083 xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1084 error = filemap_write_and_wait(inode->i_mapping);
1087 error = invalidate_inode_pages2(inode->i_mapping);
1091 *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
1095 xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1101 * Set up the transaction structure for the setattr operation, checking that we
1102 * have permission to do so. On success, return a clean transaction and the
1103 * inode locked exclusively ready for further operation specific checks. On
1104 * failure, return an error without modifying or locking the inode.
1106 * The inode might already be IO locked on call. If this is the case, it is
1107 * indicated in @join_flags and we take full responsibility for ensuring they
1108 * are unlocked from now on. Hence if we have an error here, we still have to
1109 * unlock them. Otherwise, once they are joined to the transaction, they will
1110 * be unlocked on commit/cancel.
1112 static struct xfs_trans *
1113 xfs_ioctl_setattr_get_trans(
1114 struct xfs_inode *ip,
1117 struct xfs_mount *mp = ip->i_mount;
1118 struct xfs_trans *tp;
1121 if (mp->m_flags & XFS_MOUNT_RDONLY)
1124 if (XFS_FORCED_SHUTDOWN(mp))
1127 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1129 return ERR_PTR(error);
1131 xfs_ilock(ip, XFS_ILOCK_EXCL);
1132 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
1136 * CAP_FOWNER overrides the following restrictions:
1138 * The user ID of the calling process must be equal to the file owner
1139 * ID, except in cases where the CAP_FSETID capability is applicable.
1141 if (!inode_owner_or_capable(VFS_I(ip))) {
1146 if (mp->m_flags & XFS_MOUNT_WSYNC)
1147 xfs_trans_set_sync(tp);
1152 xfs_trans_cancel(tp);
1155 xfs_iunlock(ip, join_flags);
1156 return ERR_PTR(error);
1160 * extent size hint validation is somewhat cumbersome. Rules are:
1162 * 1. extent size hint is only valid for directories and regular files
1163 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1164 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1165 * 4. can only be changed on regular files if no extents are allocated
1166 * 5. can be changed on directories at any time
1167 * 6. extsize hint of 0 turns off hints, clears inode flags.
1168 * 7. Extent size must be a multiple of the appropriate block size.
1169 * 8. for non-realtime files, the extent size hint must be limited
1170 * to half the AG size to avoid alignment extending the extent beyond the
1174 xfs_ioctl_setattr_check_extsize(
1175 struct xfs_inode *ip,
1178 struct xfs_mount *mp = ip->i_mount;
1180 if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
1183 if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
1184 !S_ISDIR(VFS_I(ip)->i_mode))
1187 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
1188 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
1191 if (fa->fsx_extsize != 0) {
1193 xfs_fsblock_t extsize_fsb;
1195 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1196 if (extsize_fsb > MAXEXTLEN)
1199 if (XFS_IS_REALTIME_INODE(ip) ||
1200 (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
1201 size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
1203 size = mp->m_sb.sb_blocksize;
1204 if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
1208 if (fa->fsx_extsize % size)
1211 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
1217 xfs_ioctl_setattr_check_projid(
1218 struct xfs_inode *ip,
1221 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1222 if (fa->fsx_projid > (__uint16_t)-1 &&
1223 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1227 * Project Quota ID state is only allowed to change from within the init
1228 * namespace. Enforce that restriction only if we are trying to change
1229 * the quota ID state. Everything else is allowed in user namespaces.
1231 if (current_user_ns() == &init_user_ns)
1234 if (xfs_get_projid(ip) != fa->fsx_projid)
1236 if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
1237 (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
1248 struct xfs_mount *mp = ip->i_mount;
1249 struct xfs_trans *tp;
1250 struct xfs_dquot *udqp = NULL;
1251 struct xfs_dquot *pdqp = NULL;
1252 struct xfs_dquot *olddquot = NULL;
1256 trace_xfs_ioctl_setattr(ip);
1258 code = xfs_ioctl_setattr_check_projid(ip, fa);
1263 * If disk quotas is on, we make sure that the dquots do exist on disk,
1264 * before we start any other transactions. Trying to do this later
1265 * is messy. We don't care to take a readlock to look at the ids
1266 * in inode here, because we can't hold it across the trans_reserve.
1267 * If the IDs do change before we take the ilock, we're covered
1268 * because the i_*dquot fields will get updated anyway.
1270 if (XFS_IS_QUOTA_ON(mp)) {
1271 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1272 ip->i_d.di_gid, fa->fsx_projid,
1273 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1279 * Changing DAX config may require inode locking for mapping
1280 * invalidation. These need to be held all the way to transaction commit
1281 * or cancel time, so need to be passed through to
1282 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1285 code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
1287 goto error_free_dquots;
1289 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1292 goto error_free_dquots;
1296 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
1297 xfs_get_projid(ip) != fa->fsx_projid) {
1298 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
1299 capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
1300 if (code) /* out of quota */
1301 goto error_trans_cancel;
1304 code = xfs_ioctl_setattr_check_extsize(ip, fa);
1306 goto error_trans_cancel;
1308 code = xfs_ioctl_setattr_xflags(tp, ip, fa);
1310 goto error_trans_cancel;
1313 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1314 * overrides the following restrictions:
1316 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1317 * successful return from chown()
1320 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1321 !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
1322 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1324 /* Change the ownerships and register project quota modifications */
1325 if (xfs_get_projid(ip) != fa->fsx_projid) {
1326 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1327 olddquot = xfs_qm_vop_chown(tp, ip,
1328 &ip->i_pdquot, pdqp);
1330 ASSERT(ip->i_d.di_version > 1);
1331 xfs_set_projid(ip, fa->fsx_projid);
1335 * Only set the extent size hint if we've already determined that the
1336 * extent size hint should be set on the inode. If no extent size flags
1337 * are set on the inode then unconditionally clear the extent size hint.
1339 if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1340 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1342 ip->i_d.di_extsize = 0;
1344 code = xfs_trans_commit(tp);
1347 * Release any dquot(s) the inode had kept before chown.
1349 xfs_qm_dqrele(olddquot);
1350 xfs_qm_dqrele(udqp);
1351 xfs_qm_dqrele(pdqp);
1356 xfs_trans_cancel(tp);
1358 xfs_qm_dqrele(udqp);
1359 xfs_qm_dqrele(pdqp);
1372 if (copy_from_user(&fa, arg, sizeof(fa)))
1375 error = mnt_want_write_file(filp);
1378 error = xfs_ioctl_setattr(ip, &fa);
1379 mnt_drop_write_file(filp);
1390 flags = xfs_di2lxflags(ip->i_d.di_flags);
1391 if (copy_to_user(arg, &flags, sizeof(flags)))
1398 struct xfs_inode *ip,
1402 struct xfs_trans *tp;
1408 if (copy_from_user(&flags, arg, sizeof(flags)))
1411 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1412 FS_NOATIME_FL | FS_NODUMP_FL | \
1416 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1418 error = mnt_want_write_file(filp);
1423 * Changing DAX config may require inode locking for mapping
1424 * invalidation. These need to be held all the way to transaction commit
1425 * or cancel time, so need to be passed through to
1426 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1429 error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
1431 goto out_drop_write;
1433 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1435 error = PTR_ERR(tp);
1436 goto out_drop_write;
1439 error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
1441 xfs_trans_cancel(tp);
1442 goto out_drop_write;
1445 error = xfs_trans_commit(tp);
1447 mnt_drop_write_file(filp);
1452 xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full)
1454 struct getbmap __user *base = (struct getbmap __user *)*ap;
1456 /* copy only getbmap portion (not getbmapx) */
1457 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1460 *ap += sizeof(struct getbmap);
1470 struct getbmapx bmx;
1473 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1476 if (bmx.bmv_count < 2)
1479 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1480 if (file->f_mode & FMODE_NOCMTIME)
1481 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1483 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
1484 (__force struct getbmap *)arg+1);
1488 /* copy back header - only size of getbmap */
1489 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1495 xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full)
1497 struct getbmapx __user *base = (struct getbmapx __user *)*ap;
1499 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1502 *ap += sizeof(struct getbmapx);
1508 struct xfs_inode *ip,
1511 struct getbmapx bmx;
1514 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1517 if (bmx.bmv_count < 2)
1520 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1523 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1524 (__force struct getbmapx *)arg+1);
1528 /* copy back header */
1529 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1539 xfs_inode_t *ip, *tip;
1543 /* Pull information for the target fd */
1544 f = fdget((int)sxp->sx_fdtarget);
1550 if (!(f.file->f_mode & FMODE_WRITE) ||
1551 !(f.file->f_mode & FMODE_READ) ||
1552 (f.file->f_flags & O_APPEND)) {
1557 tmp = fdget((int)sxp->sx_fdtmp);
1563 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1564 !(tmp.file->f_mode & FMODE_READ) ||
1565 (tmp.file->f_flags & O_APPEND)) {
1567 goto out_put_tmp_file;
1570 if (IS_SWAPFILE(file_inode(f.file)) ||
1571 IS_SWAPFILE(file_inode(tmp.file))) {
1573 goto out_put_tmp_file;
1577 * We need to ensure that the fds passed in point to XFS inodes
1578 * before we cast and access them as XFS structures as we have no
1579 * control over what the user passes us here.
1581 if (f.file->f_op != &xfs_file_operations ||
1582 tmp.file->f_op != &xfs_file_operations) {
1584 goto out_put_tmp_file;
1587 ip = XFS_I(file_inode(f.file));
1588 tip = XFS_I(file_inode(tmp.file));
1590 if (ip->i_mount != tip->i_mount) {
1592 goto out_put_tmp_file;
1595 if (ip->i_ino == tip->i_ino) {
1597 goto out_put_tmp_file;
1600 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1602 goto out_put_tmp_file;
1605 error = xfs_swap_extents(ip, tip, sxp);
1616 * Note: some of the ioctl's return positive numbers as a
1617 * byte count indicating success, such as readlink_by_handle.
1618 * So we don't "sign flip" like most other routines. This means
1619 * true errors need to be returned as a negative value.
1627 struct inode *inode = file_inode(filp);
1628 struct xfs_inode *ip = XFS_I(inode);
1629 struct xfs_mount *mp = ip->i_mount;
1630 void __user *arg = (void __user *)p;
1633 trace_xfs_file_ioctl(ip);
1637 return xfs_ioc_trim(mp, arg);
1638 case XFS_IOC_ALLOCSP:
1639 case XFS_IOC_FREESP:
1640 case XFS_IOC_RESVSP:
1641 case XFS_IOC_UNRESVSP:
1642 case XFS_IOC_ALLOCSP64:
1643 case XFS_IOC_FREESP64:
1644 case XFS_IOC_RESVSP64:
1645 case XFS_IOC_UNRESVSP64:
1646 case XFS_IOC_ZERO_RANGE: {
1649 if (copy_from_user(&bf, arg, sizeof(bf)))
1651 return xfs_ioc_space(filp, cmd, &bf);
1653 case XFS_IOC_DIOINFO: {
1655 xfs_buftarg_t *target =
1656 XFS_IS_REALTIME_INODE(ip) ?
1657 mp->m_rtdev_targp : mp->m_ddev_targp;
1659 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1660 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1662 if (copy_to_user(arg, &da, sizeof(da)))
1667 case XFS_IOC_FSBULKSTAT_SINGLE:
1668 case XFS_IOC_FSBULKSTAT:
1669 case XFS_IOC_FSINUMBERS:
1670 return xfs_ioc_bulkstat(mp, cmd, arg);
1672 case XFS_IOC_FSGEOMETRY_V1:
1673 return xfs_ioc_fsgeometry_v1(mp, arg);
1675 case XFS_IOC_FSGEOMETRY:
1676 return xfs_ioc_fsgeometry(mp, arg);
1678 case XFS_IOC_GETVERSION:
1679 return put_user(inode->i_generation, (int __user *)arg);
1681 case XFS_IOC_FSGETXATTR:
1682 return xfs_ioc_fsgetxattr(ip, 0, arg);
1683 case XFS_IOC_FSGETXATTRA:
1684 return xfs_ioc_fsgetxattr(ip, 1, arg);
1685 case XFS_IOC_FSSETXATTR:
1686 return xfs_ioc_fssetxattr(ip, filp, arg);
1687 case XFS_IOC_GETXFLAGS:
1688 return xfs_ioc_getxflags(ip, arg);
1689 case XFS_IOC_SETXFLAGS:
1690 return xfs_ioc_setxflags(ip, filp, arg);
1692 case XFS_IOC_FSSETDM: {
1693 struct fsdmidata dmi;
1695 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1698 error = mnt_want_write_file(filp);
1702 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1704 mnt_drop_write_file(filp);
1708 case XFS_IOC_GETBMAP:
1709 case XFS_IOC_GETBMAPA:
1710 return xfs_ioc_getbmap(filp, cmd, arg);
1712 case XFS_IOC_GETBMAPX:
1713 return xfs_ioc_getbmapx(ip, arg);
1715 case XFS_IOC_FD_TO_HANDLE:
1716 case XFS_IOC_PATH_TO_HANDLE:
1717 case XFS_IOC_PATH_TO_FSHANDLE: {
1718 xfs_fsop_handlereq_t hreq;
1720 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1722 return xfs_find_handle(cmd, &hreq);
1724 case XFS_IOC_OPEN_BY_HANDLE: {
1725 xfs_fsop_handlereq_t hreq;
1727 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1729 return xfs_open_by_handle(filp, &hreq);
1731 case XFS_IOC_FSSETDM_BY_HANDLE:
1732 return xfs_fssetdm_by_handle(filp, arg);
1734 case XFS_IOC_READLINK_BY_HANDLE: {
1735 xfs_fsop_handlereq_t hreq;
1737 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1739 return xfs_readlink_by_handle(filp, &hreq);
1741 case XFS_IOC_ATTRLIST_BY_HANDLE:
1742 return xfs_attrlist_by_handle(filp, arg);
1744 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1745 return xfs_attrmulti_by_handle(filp, arg);
1747 case XFS_IOC_SWAPEXT: {
1748 struct xfs_swapext sxp;
1750 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1752 error = mnt_want_write_file(filp);
1755 error = xfs_ioc_swapext(&sxp);
1756 mnt_drop_write_file(filp);
1760 case XFS_IOC_FSCOUNTS: {
1761 xfs_fsop_counts_t out;
1763 error = xfs_fs_counts(mp, &out);
1767 if (copy_to_user(arg, &out, sizeof(out)))
1772 case XFS_IOC_SET_RESBLKS: {
1773 xfs_fsop_resblks_t inout;
1776 if (!capable(CAP_SYS_ADMIN))
1779 if (mp->m_flags & XFS_MOUNT_RDONLY)
1782 if (copy_from_user(&inout, arg, sizeof(inout)))
1785 error = mnt_want_write_file(filp);
1789 /* input parameter is passed in resblks field of structure */
1791 error = xfs_reserve_blocks(mp, &in, &inout);
1792 mnt_drop_write_file(filp);
1796 if (copy_to_user(arg, &inout, sizeof(inout)))
1801 case XFS_IOC_GET_RESBLKS: {
1802 xfs_fsop_resblks_t out;
1804 if (!capable(CAP_SYS_ADMIN))
1807 error = xfs_reserve_blocks(mp, NULL, &out);
1811 if (copy_to_user(arg, &out, sizeof(out)))
1817 case XFS_IOC_FSGROWFSDATA: {
1818 xfs_growfs_data_t in;
1820 if (copy_from_user(&in, arg, sizeof(in)))
1823 error = mnt_want_write_file(filp);
1826 error = xfs_growfs_data(mp, &in);
1827 mnt_drop_write_file(filp);
1831 case XFS_IOC_FSGROWFSLOG: {
1832 xfs_growfs_log_t in;
1834 if (copy_from_user(&in, arg, sizeof(in)))
1837 error = mnt_want_write_file(filp);
1840 error = xfs_growfs_log(mp, &in);
1841 mnt_drop_write_file(filp);
1845 case XFS_IOC_FSGROWFSRT: {
1848 if (copy_from_user(&in, arg, sizeof(in)))
1851 error = mnt_want_write_file(filp);
1854 error = xfs_growfs_rt(mp, &in);
1855 mnt_drop_write_file(filp);
1859 case XFS_IOC_GOINGDOWN: {
1862 if (!capable(CAP_SYS_ADMIN))
1865 if (get_user(in, (__uint32_t __user *)arg))
1868 return xfs_fs_goingdown(mp, in);
1871 case XFS_IOC_ERROR_INJECTION: {
1872 xfs_error_injection_t in;
1874 if (!capable(CAP_SYS_ADMIN))
1877 if (copy_from_user(&in, arg, sizeof(in)))
1880 return xfs_errortag_add(in.errtag, mp);
1883 case XFS_IOC_ERROR_CLEARALL:
1884 if (!capable(CAP_SYS_ADMIN))
1887 return xfs_errortag_clearall(mp, 1);
1889 case XFS_IOC_FREE_EOFBLOCKS: {
1890 struct xfs_fs_eofblocks eofb;
1891 struct xfs_eofblocks keofb;
1893 if (!capable(CAP_SYS_ADMIN))
1896 if (mp->m_flags & XFS_MOUNT_RDONLY)
1899 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1902 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
1906 return xfs_icache_free_eofblocks(mp, &keofb);