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 struct xfs_fsop_attrlist_handlereq __user *p = arg;
391 xfs_fsop_attrlist_handlereq_t al_hreq;
392 struct dentry *dentry;
395 if (!capable(CAP_SYS_ADMIN))
397 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
399 if (al_hreq.buflen < sizeof(struct attrlist) ||
400 al_hreq.buflen > XFS_XATTR_LIST_MAX)
404 * Reject flags, only allow namespaces.
406 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
409 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
411 return PTR_ERR(dentry);
413 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
417 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
418 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
419 al_hreq.flags, cursor);
423 if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
428 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
439 xfs_attrmulti_attr_get(
442 unsigned char __user *ubuf,
449 if (*len > XFS_XATTR_SIZE_MAX)
451 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
455 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
459 if (copy_to_user(ubuf, kbuf, *len))
468 xfs_attrmulti_attr_set(
471 const unsigned char __user *ubuf,
478 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
480 if (len > XFS_XATTR_SIZE_MAX)
483 kbuf = memdup_user(ubuf, len);
485 return PTR_ERR(kbuf);
487 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
489 xfs_forget_acl(inode, name, flags);
495 xfs_attrmulti_attr_remove(
502 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
504 error = xfs_attr_remove(XFS_I(inode), name, flags);
506 xfs_forget_acl(inode, name, flags);
511 xfs_attrmulti_by_handle(
512 struct file *parfilp,
516 xfs_attr_multiop_t *ops;
517 xfs_fsop_attrmulti_handlereq_t am_hreq;
518 struct dentry *dentry;
519 unsigned int i, size;
520 unsigned char *attr_name;
522 if (!capable(CAP_SYS_ADMIN))
524 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
528 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
531 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
533 return PTR_ERR(dentry);
536 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
537 if (!size || size > 16 * PAGE_SIZE)
540 ops = memdup_user(am_hreq.ops, size);
542 error = PTR_ERR(ops);
547 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
552 for (i = 0; i < am_hreq.opcount; i++) {
553 ops[i].am_error = strncpy_from_user((char *)attr_name,
554 ops[i].am_attrname, MAXNAMELEN);
555 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
557 if (ops[i].am_error < 0)
560 switch (ops[i].am_opcode) {
562 ops[i].am_error = xfs_attrmulti_attr_get(
563 d_inode(dentry), attr_name,
564 ops[i].am_attrvalue, &ops[i].am_length,
568 ops[i].am_error = mnt_want_write_file(parfilp);
571 ops[i].am_error = xfs_attrmulti_attr_set(
572 d_inode(dentry), attr_name,
573 ops[i].am_attrvalue, ops[i].am_length,
575 mnt_drop_write_file(parfilp);
578 ops[i].am_error = mnt_want_write_file(parfilp);
581 ops[i].am_error = xfs_attrmulti_attr_remove(
582 d_inode(dentry), attr_name,
584 mnt_drop_write_file(parfilp);
587 ops[i].am_error = -EINVAL;
591 if (copy_to_user(am_hreq.ops, ops, size))
608 struct inode *inode = file_inode(filp);
609 struct xfs_inode *ip = XFS_I(inode);
611 enum xfs_prealloc_flags flags = 0;
612 uint iolock = XFS_IOLOCK_EXCL;
616 * Only allow the sys admin to reserve space unless
617 * unwritten extents are enabled.
619 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
620 !capable(CAP_SYS_ADMIN))
623 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
626 if (!(filp->f_mode & FMODE_WRITE))
629 if (!S_ISREG(inode->i_mode))
632 if (filp->f_flags & O_DSYNC)
633 flags |= XFS_PREALLOC_SYNC;
634 if (filp->f_mode & FMODE_NOCMTIME)
635 flags |= XFS_PREALLOC_INVISIBLE;
637 error = mnt_want_write_file(filp);
641 xfs_ilock(ip, iolock);
642 error = xfs_break_layouts(inode, &iolock, false);
646 xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
647 iolock |= XFS_MMAPLOCK_EXCL;
649 switch (bf->l_whence) {
653 bf->l_start += filp->f_pos;
656 bf->l_start += XFS_ISIZE(ip);
664 * length of <= 0 for resv/unresv/zero is invalid. length for
665 * alloc/free is ignored completely and we have no idea what userspace
666 * might have set it to, so set it to zero to allow range
670 case XFS_IOC_ZERO_RANGE:
672 case XFS_IOC_RESVSP64:
673 case XFS_IOC_UNRESVSP:
674 case XFS_IOC_UNRESVSP64:
675 if (bf->l_len <= 0) {
685 if (bf->l_start < 0 ||
686 bf->l_start > inode->i_sb->s_maxbytes ||
687 bf->l_start + bf->l_len < 0 ||
688 bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
694 case XFS_IOC_ZERO_RANGE:
695 flags |= XFS_PREALLOC_SET;
696 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
699 case XFS_IOC_RESVSP64:
700 flags |= XFS_PREALLOC_SET;
701 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
704 case XFS_IOC_UNRESVSP:
705 case XFS_IOC_UNRESVSP64:
706 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
708 case XFS_IOC_ALLOCSP:
709 case XFS_IOC_ALLOCSP64:
711 case XFS_IOC_FREESP64:
712 flags |= XFS_PREALLOC_CLEAR;
713 if (bf->l_start > XFS_ISIZE(ip)) {
714 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
715 bf->l_start - XFS_ISIZE(ip), 0);
720 iattr.ia_valid = ATTR_SIZE;
721 iattr.ia_size = bf->l_start;
723 error = xfs_setattr_size(ip, &iattr);
733 error = xfs_update_prealloc_flags(ip, flags);
736 xfs_iunlock(ip, iolock);
737 mnt_drop_write_file(filp);
747 xfs_fsop_bulkreq_t bulkreq;
748 int count; /* # of records returned */
749 xfs_ino_t inlast; /* last inode number */
753 /* done = 1 if there are more stats to get and if bulkstat */
754 /* should be called again (unused here, but used in dmapi) */
756 if (!capable(CAP_SYS_ADMIN))
759 if (XFS_FORCED_SHUTDOWN(mp))
762 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
765 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
768 if ((count = bulkreq.icount) <= 0)
771 if (bulkreq.ubuffer == NULL)
774 if (cmd == XFS_IOC_FSINUMBERS)
775 error = xfs_inumbers(mp, &inlast, &count,
776 bulkreq.ubuffer, xfs_inumbers_fmt);
777 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
778 error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer,
779 sizeof(xfs_bstat_t), NULL, &done);
780 else /* XFS_IOC_FSBULKSTAT */
781 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
782 sizeof(xfs_bstat_t), bulkreq.ubuffer,
788 if (bulkreq.ocount != NULL) {
789 if (copy_to_user(bulkreq.lastip, &inlast,
793 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
801 xfs_ioc_fsgeometry_v1(
805 xfs_fsop_geom_t fsgeo;
808 error = xfs_fs_geometry(mp, &fsgeo, 3);
813 * Caller should have passed an argument of type
814 * xfs_fsop_geom_v1_t. This is a proper subset of the
815 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
817 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
827 xfs_fsop_geom_t fsgeo;
830 error = xfs_fs_geometry(mp, &fsgeo, 4);
834 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
840 * Linux extended inode flags interface.
844 xfs_merge_ioc_xflags(
848 unsigned int xflags = start;
850 if (flags & FS_IMMUTABLE_FL)
851 xflags |= FS_XFLAG_IMMUTABLE;
853 xflags &= ~FS_XFLAG_IMMUTABLE;
854 if (flags & FS_APPEND_FL)
855 xflags |= FS_XFLAG_APPEND;
857 xflags &= ~FS_XFLAG_APPEND;
858 if (flags & FS_SYNC_FL)
859 xflags |= FS_XFLAG_SYNC;
861 xflags &= ~FS_XFLAG_SYNC;
862 if (flags & FS_NOATIME_FL)
863 xflags |= FS_XFLAG_NOATIME;
865 xflags &= ~FS_XFLAG_NOATIME;
866 if (flags & FS_NODUMP_FL)
867 xflags |= FS_XFLAG_NODUMP;
869 xflags &= ~FS_XFLAG_NODUMP;
878 unsigned int flags = 0;
880 if (di_flags & XFS_DIFLAG_IMMUTABLE)
881 flags |= FS_IMMUTABLE_FL;
882 if (di_flags & XFS_DIFLAG_APPEND)
883 flags |= FS_APPEND_FL;
884 if (di_flags & XFS_DIFLAG_SYNC)
886 if (di_flags & XFS_DIFLAG_NOATIME)
887 flags |= FS_NOATIME_FL;
888 if (di_flags & XFS_DIFLAG_NODUMP)
889 flags |= FS_NODUMP_FL;
901 memset(&fa, 0, sizeof(struct fsxattr));
903 xfs_ilock(ip, XFS_ILOCK_SHARED);
904 fa.fsx_xflags = xfs_ip2xflags(ip);
905 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
906 fa.fsx_cowextsize = ip->i_d.di_cowextsize <<
907 ip->i_mount->m_sb.sb_blocklog;
908 fa.fsx_projid = xfs_get_projid(ip);
912 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
913 fa.fsx_nextents = ip->i_afp->if_bytes /
914 sizeof(xfs_bmbt_rec_t);
916 fa.fsx_nextents = ip->i_d.di_anextents;
920 if (ip->i_df.if_flags & XFS_IFEXTENTS)
921 fa.fsx_nextents = ip->i_df.if_bytes /
922 sizeof(xfs_bmbt_rec_t);
924 fa.fsx_nextents = ip->i_d.di_nextents;
926 xfs_iunlock(ip, XFS_ILOCK_SHARED);
928 if (copy_to_user(arg, &fa, sizeof(fa)))
935 struct xfs_inode *ip,
938 unsigned int di_flags;
941 /* can't set PREALLOC this way, just preserve it */
942 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
943 if (xflags & FS_XFLAG_IMMUTABLE)
944 di_flags |= XFS_DIFLAG_IMMUTABLE;
945 if (xflags & FS_XFLAG_APPEND)
946 di_flags |= XFS_DIFLAG_APPEND;
947 if (xflags & FS_XFLAG_SYNC)
948 di_flags |= XFS_DIFLAG_SYNC;
949 if (xflags & FS_XFLAG_NOATIME)
950 di_flags |= XFS_DIFLAG_NOATIME;
951 if (xflags & FS_XFLAG_NODUMP)
952 di_flags |= XFS_DIFLAG_NODUMP;
953 if (xflags & FS_XFLAG_NODEFRAG)
954 di_flags |= XFS_DIFLAG_NODEFRAG;
955 if (xflags & FS_XFLAG_FILESTREAM)
956 di_flags |= XFS_DIFLAG_FILESTREAM;
957 if (S_ISDIR(VFS_I(ip)->i_mode)) {
958 if (xflags & FS_XFLAG_RTINHERIT)
959 di_flags |= XFS_DIFLAG_RTINHERIT;
960 if (xflags & FS_XFLAG_NOSYMLINKS)
961 di_flags |= XFS_DIFLAG_NOSYMLINKS;
962 if (xflags & FS_XFLAG_EXTSZINHERIT)
963 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
964 if (xflags & FS_XFLAG_PROJINHERIT)
965 di_flags |= XFS_DIFLAG_PROJINHERIT;
966 } else if (S_ISREG(VFS_I(ip)->i_mode)) {
967 if (xflags & FS_XFLAG_REALTIME)
968 di_flags |= XFS_DIFLAG_REALTIME;
969 if (xflags & FS_XFLAG_EXTSIZE)
970 di_flags |= XFS_DIFLAG_EXTSIZE;
972 ip->i_d.di_flags = di_flags;
974 /* diflags2 only valid for v3 inodes. */
975 if (ip->i_d.di_version < 3)
978 di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
979 if (xflags & FS_XFLAG_DAX)
980 di_flags2 |= XFS_DIFLAG2_DAX;
981 if (xflags & FS_XFLAG_COWEXTSIZE)
982 di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
984 ip->i_d.di_flags2 = di_flags2;
988 xfs_diflags_to_linux(
989 struct xfs_inode *ip)
991 struct inode *inode = VFS_I(ip);
992 unsigned int xflags = xfs_ip2xflags(ip);
994 if (xflags & FS_XFLAG_IMMUTABLE)
995 inode->i_flags |= S_IMMUTABLE;
997 inode->i_flags &= ~S_IMMUTABLE;
998 if (xflags & FS_XFLAG_APPEND)
999 inode->i_flags |= S_APPEND;
1001 inode->i_flags &= ~S_APPEND;
1002 if (xflags & FS_XFLAG_SYNC)
1003 inode->i_flags |= S_SYNC;
1005 inode->i_flags &= ~S_SYNC;
1006 if (xflags & FS_XFLAG_NOATIME)
1007 inode->i_flags |= S_NOATIME;
1009 inode->i_flags &= ~S_NOATIME;
1010 if (xflags & FS_XFLAG_DAX)
1011 inode->i_flags |= S_DAX;
1013 inode->i_flags &= ~S_DAX;
1018 xfs_ioctl_setattr_xflags(
1019 struct xfs_trans *tp,
1020 struct xfs_inode *ip,
1023 struct xfs_mount *mp = ip->i_mount;
1025 /* Can't change realtime flag if any extents are allocated. */
1026 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1027 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1030 /* If realtime flag is set then must have realtime device */
1031 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1032 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1033 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
1037 /* Don't allow us to set realtime mode for a reflinked file. */
1038 if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
1042 * Can't modify an immutable/append-only file unless
1043 * we have appropriate permission.
1045 if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
1046 (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
1047 !capable(CAP_LINUX_IMMUTABLE))
1050 xfs_set_diflags(ip, fa->fsx_xflags);
1051 xfs_diflags_to_linux(ip);
1052 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1053 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1054 XFS_STATS_INC(mp, xs_ig_attrchg);
1059 * If we are changing DAX flags, we have to ensure the file is clean and any
1060 * cached objects in the address space are invalidated and removed. This
1061 * requires us to lock out other IO and page faults similar to a truncate
1062 * operation. The locks need to be held until the transaction has been committed
1063 * so that the cache invalidation is atomic with respect to the DAX flag
1067 xfs_ioctl_setattr_dax_invalidate(
1068 struct xfs_inode *ip,
1072 struct inode *inode = VFS_I(ip);
1078 * It is only valid to set the DAX flag on regular files and
1079 * directories on filesystems where the block size is equal to the page
1080 * size. On directories it serves as an inherit hint.
1082 if (fa->fsx_xflags & FS_XFLAG_DAX) {
1083 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
1085 if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE)
1089 /* If the DAX state is not changing, we have nothing to do here. */
1090 if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
1092 if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
1095 /* lock, flush and invalidate mapping in preparation for flag change */
1096 xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1097 error = filemap_write_and_wait(inode->i_mapping);
1100 error = invalidate_inode_pages2(inode->i_mapping);
1104 *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
1108 xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1114 * Set up the transaction structure for the setattr operation, checking that we
1115 * have permission to do so. On success, return a clean transaction and the
1116 * inode locked exclusively ready for further operation specific checks. On
1117 * failure, return an error without modifying or locking the inode.
1119 * The inode might already be IO locked on call. If this is the case, it is
1120 * indicated in @join_flags and we take full responsibility for ensuring they
1121 * are unlocked from now on. Hence if we have an error here, we still have to
1122 * unlock them. Otherwise, once they are joined to the transaction, they will
1123 * be unlocked on commit/cancel.
1125 static struct xfs_trans *
1126 xfs_ioctl_setattr_get_trans(
1127 struct xfs_inode *ip,
1130 struct xfs_mount *mp = ip->i_mount;
1131 struct xfs_trans *tp;
1134 if (mp->m_flags & XFS_MOUNT_RDONLY)
1137 if (XFS_FORCED_SHUTDOWN(mp))
1140 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1142 return ERR_PTR(error);
1144 xfs_ilock(ip, XFS_ILOCK_EXCL);
1145 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
1149 * CAP_FOWNER overrides the following restrictions:
1151 * The user ID of the calling process must be equal to the file owner
1152 * ID, except in cases where the CAP_FSETID capability is applicable.
1154 if (!inode_owner_or_capable(VFS_I(ip))) {
1159 if (mp->m_flags & XFS_MOUNT_WSYNC)
1160 xfs_trans_set_sync(tp);
1165 xfs_trans_cancel(tp);
1168 xfs_iunlock(ip, join_flags);
1169 return ERR_PTR(error);
1173 * extent size hint validation is somewhat cumbersome. Rules are:
1175 * 1. extent size hint is only valid for directories and regular files
1176 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1177 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1178 * 4. can only be changed on regular files if no extents are allocated
1179 * 5. can be changed on directories at any time
1180 * 6. extsize hint of 0 turns off hints, clears inode flags.
1181 * 7. Extent size must be a multiple of the appropriate block size.
1182 * 8. for non-realtime files, the extent size hint must be limited
1183 * to half the AG size to avoid alignment extending the extent beyond the
1187 xfs_ioctl_setattr_check_extsize(
1188 struct xfs_inode *ip,
1191 struct xfs_mount *mp = ip->i_mount;
1193 if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
1196 if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
1197 !S_ISDIR(VFS_I(ip)->i_mode))
1200 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
1201 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
1204 if (fa->fsx_extsize != 0) {
1206 xfs_fsblock_t extsize_fsb;
1208 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1209 if (extsize_fsb > MAXEXTLEN)
1212 if (XFS_IS_REALTIME_INODE(ip) ||
1213 (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
1214 size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
1216 size = mp->m_sb.sb_blocksize;
1217 if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
1221 if (fa->fsx_extsize % size)
1224 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
1230 * CoW extent size hint validation rules are:
1232 * 1. CoW extent size hint can only be set if reflink is enabled on the fs.
1233 * The inode does not have to have any shared blocks, but it must be a v3.
1234 * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
1235 * for a directory, the hint is propagated to new files.
1236 * 3. Can be changed on files & directories at any time.
1237 * 4. CoW extsize hint of 0 turns off hints, clears inode flags.
1238 * 5. Extent size must be a multiple of the appropriate block size.
1239 * 6. The extent size hint must be limited to half the AG size to avoid
1240 * alignment extending the extent beyond the limits of the AG.
1243 xfs_ioctl_setattr_check_cowextsize(
1244 struct xfs_inode *ip,
1247 struct xfs_mount *mp = ip->i_mount;
1249 if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
1252 if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) ||
1253 ip->i_d.di_version != 3)
1256 if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
1259 if (fa->fsx_cowextsize != 0) {
1261 xfs_fsblock_t cowextsize_fsb;
1263 cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
1264 if (cowextsize_fsb > MAXEXTLEN)
1267 size = mp->m_sb.sb_blocksize;
1268 if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
1271 if (fa->fsx_cowextsize % size)
1274 fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
1280 xfs_ioctl_setattr_check_projid(
1281 struct xfs_inode *ip,
1284 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1285 if (fa->fsx_projid > (__uint16_t)-1 &&
1286 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1290 * Project Quota ID state is only allowed to change from within the init
1291 * namespace. Enforce that restriction only if we are trying to change
1292 * the quota ID state. Everything else is allowed in user namespaces.
1294 if (current_user_ns() == &init_user_ns)
1297 if (xfs_get_projid(ip) != fa->fsx_projid)
1299 if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
1300 (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
1311 struct xfs_mount *mp = ip->i_mount;
1312 struct xfs_trans *tp;
1313 struct xfs_dquot *udqp = NULL;
1314 struct xfs_dquot *pdqp = NULL;
1315 struct xfs_dquot *olddquot = NULL;
1319 trace_xfs_ioctl_setattr(ip);
1321 code = xfs_ioctl_setattr_check_projid(ip, fa);
1326 * If disk quotas is on, we make sure that the dquots do exist on disk,
1327 * before we start any other transactions. Trying to do this later
1328 * is messy. We don't care to take a readlock to look at the ids
1329 * in inode here, because we can't hold it across the trans_reserve.
1330 * If the IDs do change before we take the ilock, we're covered
1331 * because the i_*dquot fields will get updated anyway.
1333 if (XFS_IS_QUOTA_ON(mp)) {
1334 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1335 ip->i_d.di_gid, fa->fsx_projid,
1336 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1342 * Changing DAX config may require inode locking for mapping
1343 * invalidation. These need to be held all the way to transaction commit
1344 * or cancel time, so need to be passed through to
1345 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1348 code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
1350 goto error_free_dquots;
1352 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1355 goto error_free_dquots;
1359 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
1360 xfs_get_projid(ip) != fa->fsx_projid) {
1361 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
1362 capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
1363 if (code) /* out of quota */
1364 goto error_trans_cancel;
1367 code = xfs_ioctl_setattr_check_extsize(ip, fa);
1369 goto error_trans_cancel;
1371 code = xfs_ioctl_setattr_check_cowextsize(ip, fa);
1373 goto error_trans_cancel;
1375 code = xfs_ioctl_setattr_xflags(tp, ip, fa);
1377 goto error_trans_cancel;
1380 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1381 * overrides the following restrictions:
1383 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1384 * successful return from chown()
1387 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1388 !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
1389 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1391 /* Change the ownerships and register project quota modifications */
1392 if (xfs_get_projid(ip) != fa->fsx_projid) {
1393 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1394 olddquot = xfs_qm_vop_chown(tp, ip,
1395 &ip->i_pdquot, pdqp);
1397 ASSERT(ip->i_d.di_version > 1);
1398 xfs_set_projid(ip, fa->fsx_projid);
1402 * Only set the extent size hint if we've already determined that the
1403 * extent size hint should be set on the inode. If no extent size flags
1404 * are set on the inode then unconditionally clear the extent size hint.
1406 if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1407 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1409 ip->i_d.di_extsize = 0;
1410 if (ip->i_d.di_version == 3 &&
1411 (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
1412 ip->i_d.di_cowextsize = fa->fsx_cowextsize >>
1413 mp->m_sb.sb_blocklog;
1415 ip->i_d.di_cowextsize = 0;
1417 code = xfs_trans_commit(tp);
1420 * Release any dquot(s) the inode had kept before chown.
1422 xfs_qm_dqrele(olddquot);
1423 xfs_qm_dqrele(udqp);
1424 xfs_qm_dqrele(pdqp);
1429 xfs_trans_cancel(tp);
1431 xfs_qm_dqrele(udqp);
1432 xfs_qm_dqrele(pdqp);
1445 if (copy_from_user(&fa, arg, sizeof(fa)))
1448 error = mnt_want_write_file(filp);
1451 error = xfs_ioctl_setattr(ip, &fa);
1452 mnt_drop_write_file(filp);
1463 flags = xfs_di2lxflags(ip->i_d.di_flags);
1464 if (copy_to_user(arg, &flags, sizeof(flags)))
1471 struct xfs_inode *ip,
1475 struct xfs_trans *tp;
1481 if (copy_from_user(&flags, arg, sizeof(flags)))
1484 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1485 FS_NOATIME_FL | FS_NODUMP_FL | \
1489 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1491 error = mnt_want_write_file(filp);
1496 * Changing DAX config may require inode locking for mapping
1497 * invalidation. These need to be held all the way to transaction commit
1498 * or cancel time, so need to be passed through to
1499 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1502 error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
1504 goto out_drop_write;
1506 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1508 error = PTR_ERR(tp);
1509 goto out_drop_write;
1512 error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
1514 xfs_trans_cancel(tp);
1515 goto out_drop_write;
1518 error = xfs_trans_commit(tp);
1520 mnt_drop_write_file(filp);
1525 xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full)
1527 struct getbmap __user *base = (struct getbmap __user *)*ap;
1529 /* copy only getbmap portion (not getbmapx) */
1530 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1533 *ap += sizeof(struct getbmap);
1543 struct getbmapx bmx;
1546 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1549 if (bmx.bmv_count < 2)
1552 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1553 if (file->f_mode & FMODE_NOCMTIME)
1554 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1556 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
1557 (__force struct getbmap *)arg+1);
1561 /* copy back header - only size of getbmap */
1562 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1568 xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full)
1570 struct getbmapx __user *base = (struct getbmapx __user *)*ap;
1572 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1575 *ap += sizeof(struct getbmapx);
1581 struct xfs_inode *ip,
1584 struct getbmapx bmx;
1587 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1590 if (bmx.bmv_count < 2)
1593 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1596 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1597 (__force struct getbmapx *)arg+1);
1601 /* copy back header */
1602 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1612 xfs_inode_t *ip, *tip;
1616 /* Pull information for the target fd */
1617 f = fdget((int)sxp->sx_fdtarget);
1623 if (!(f.file->f_mode & FMODE_WRITE) ||
1624 !(f.file->f_mode & FMODE_READ) ||
1625 (f.file->f_flags & O_APPEND)) {
1630 tmp = fdget((int)sxp->sx_fdtmp);
1636 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1637 !(tmp.file->f_mode & FMODE_READ) ||
1638 (tmp.file->f_flags & O_APPEND)) {
1640 goto out_put_tmp_file;
1643 if (IS_SWAPFILE(file_inode(f.file)) ||
1644 IS_SWAPFILE(file_inode(tmp.file))) {
1646 goto out_put_tmp_file;
1650 * We need to ensure that the fds passed in point to XFS inodes
1651 * before we cast and access them as XFS structures as we have no
1652 * control over what the user passes us here.
1654 if (f.file->f_op != &xfs_file_operations ||
1655 tmp.file->f_op != &xfs_file_operations) {
1657 goto out_put_tmp_file;
1660 ip = XFS_I(file_inode(f.file));
1661 tip = XFS_I(file_inode(tmp.file));
1663 if (ip->i_mount != tip->i_mount) {
1665 goto out_put_tmp_file;
1668 if (ip->i_ino == tip->i_ino) {
1670 goto out_put_tmp_file;
1673 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1675 goto out_put_tmp_file;
1678 error = xfs_swap_extents(ip, tip, sxp);
1689 * Note: some of the ioctl's return positive numbers as a
1690 * byte count indicating success, such as readlink_by_handle.
1691 * So we don't "sign flip" like most other routines. This means
1692 * true errors need to be returned as a negative value.
1700 struct inode *inode = file_inode(filp);
1701 struct xfs_inode *ip = XFS_I(inode);
1702 struct xfs_mount *mp = ip->i_mount;
1703 void __user *arg = (void __user *)p;
1706 trace_xfs_file_ioctl(ip);
1710 return xfs_ioc_trim(mp, arg);
1711 case XFS_IOC_ALLOCSP:
1712 case XFS_IOC_FREESP:
1713 case XFS_IOC_RESVSP:
1714 case XFS_IOC_UNRESVSP:
1715 case XFS_IOC_ALLOCSP64:
1716 case XFS_IOC_FREESP64:
1717 case XFS_IOC_RESVSP64:
1718 case XFS_IOC_UNRESVSP64:
1719 case XFS_IOC_ZERO_RANGE: {
1722 if (copy_from_user(&bf, arg, sizeof(bf)))
1724 return xfs_ioc_space(filp, cmd, &bf);
1726 case XFS_IOC_DIOINFO: {
1728 xfs_buftarg_t *target =
1729 XFS_IS_REALTIME_INODE(ip) ?
1730 mp->m_rtdev_targp : mp->m_ddev_targp;
1732 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1733 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1735 if (copy_to_user(arg, &da, sizeof(da)))
1740 case XFS_IOC_FSBULKSTAT_SINGLE:
1741 case XFS_IOC_FSBULKSTAT:
1742 case XFS_IOC_FSINUMBERS:
1743 return xfs_ioc_bulkstat(mp, cmd, arg);
1745 case XFS_IOC_FSGEOMETRY_V1:
1746 return xfs_ioc_fsgeometry_v1(mp, arg);
1748 case XFS_IOC_FSGEOMETRY:
1749 return xfs_ioc_fsgeometry(mp, arg);
1751 case XFS_IOC_GETVERSION:
1752 return put_user(inode->i_generation, (int __user *)arg);
1754 case XFS_IOC_FSGETXATTR:
1755 return xfs_ioc_fsgetxattr(ip, 0, arg);
1756 case XFS_IOC_FSGETXATTRA:
1757 return xfs_ioc_fsgetxattr(ip, 1, arg);
1758 case XFS_IOC_FSSETXATTR:
1759 return xfs_ioc_fssetxattr(ip, filp, arg);
1760 case XFS_IOC_GETXFLAGS:
1761 return xfs_ioc_getxflags(ip, arg);
1762 case XFS_IOC_SETXFLAGS:
1763 return xfs_ioc_setxflags(ip, filp, arg);
1765 case XFS_IOC_FSSETDM: {
1766 struct fsdmidata dmi;
1768 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1771 error = mnt_want_write_file(filp);
1775 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1777 mnt_drop_write_file(filp);
1781 case XFS_IOC_GETBMAP:
1782 case XFS_IOC_GETBMAPA:
1783 return xfs_ioc_getbmap(filp, cmd, arg);
1785 case XFS_IOC_GETBMAPX:
1786 return xfs_ioc_getbmapx(ip, arg);
1788 case XFS_IOC_FD_TO_HANDLE:
1789 case XFS_IOC_PATH_TO_HANDLE:
1790 case XFS_IOC_PATH_TO_FSHANDLE: {
1791 xfs_fsop_handlereq_t hreq;
1793 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1795 return xfs_find_handle(cmd, &hreq);
1797 case XFS_IOC_OPEN_BY_HANDLE: {
1798 xfs_fsop_handlereq_t hreq;
1800 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1802 return xfs_open_by_handle(filp, &hreq);
1804 case XFS_IOC_FSSETDM_BY_HANDLE:
1805 return xfs_fssetdm_by_handle(filp, arg);
1807 case XFS_IOC_READLINK_BY_HANDLE: {
1808 xfs_fsop_handlereq_t hreq;
1810 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1812 return xfs_readlink_by_handle(filp, &hreq);
1814 case XFS_IOC_ATTRLIST_BY_HANDLE:
1815 return xfs_attrlist_by_handle(filp, arg);
1817 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1818 return xfs_attrmulti_by_handle(filp, arg);
1820 case XFS_IOC_SWAPEXT: {
1821 struct xfs_swapext sxp;
1823 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1825 error = mnt_want_write_file(filp);
1828 error = xfs_ioc_swapext(&sxp);
1829 mnt_drop_write_file(filp);
1833 case XFS_IOC_FSCOUNTS: {
1834 xfs_fsop_counts_t out;
1836 error = xfs_fs_counts(mp, &out);
1840 if (copy_to_user(arg, &out, sizeof(out)))
1845 case XFS_IOC_SET_RESBLKS: {
1846 xfs_fsop_resblks_t inout;
1849 if (!capable(CAP_SYS_ADMIN))
1852 if (mp->m_flags & XFS_MOUNT_RDONLY)
1855 if (copy_from_user(&inout, arg, sizeof(inout)))
1858 error = mnt_want_write_file(filp);
1862 /* input parameter is passed in resblks field of structure */
1864 error = xfs_reserve_blocks(mp, &in, &inout);
1865 mnt_drop_write_file(filp);
1869 if (copy_to_user(arg, &inout, sizeof(inout)))
1874 case XFS_IOC_GET_RESBLKS: {
1875 xfs_fsop_resblks_t out;
1877 if (!capable(CAP_SYS_ADMIN))
1880 error = xfs_reserve_blocks(mp, NULL, &out);
1884 if (copy_to_user(arg, &out, sizeof(out)))
1890 case XFS_IOC_FSGROWFSDATA: {
1891 xfs_growfs_data_t in;
1893 if (copy_from_user(&in, arg, sizeof(in)))
1896 error = mnt_want_write_file(filp);
1899 error = xfs_growfs_data(mp, &in);
1900 mnt_drop_write_file(filp);
1904 case XFS_IOC_FSGROWFSLOG: {
1905 xfs_growfs_log_t in;
1907 if (copy_from_user(&in, arg, sizeof(in)))
1910 error = mnt_want_write_file(filp);
1913 error = xfs_growfs_log(mp, &in);
1914 mnt_drop_write_file(filp);
1918 case XFS_IOC_FSGROWFSRT: {
1921 if (copy_from_user(&in, arg, sizeof(in)))
1924 error = mnt_want_write_file(filp);
1927 error = xfs_growfs_rt(mp, &in);
1928 mnt_drop_write_file(filp);
1932 case XFS_IOC_GOINGDOWN: {
1935 if (!capable(CAP_SYS_ADMIN))
1938 if (get_user(in, (__uint32_t __user *)arg))
1941 return xfs_fs_goingdown(mp, in);
1944 case XFS_IOC_ERROR_INJECTION: {
1945 xfs_error_injection_t in;
1947 if (!capable(CAP_SYS_ADMIN))
1950 if (copy_from_user(&in, arg, sizeof(in)))
1953 return xfs_errortag_add(in.errtag, mp);
1956 case XFS_IOC_ERROR_CLEARALL:
1957 if (!capable(CAP_SYS_ADMIN))
1960 return xfs_errortag_clearall(mp, 1);
1962 case XFS_IOC_FREE_EOFBLOCKS: {
1963 struct xfs_fs_eofblocks eofb;
1964 struct xfs_eofblocks keofb;
1966 if (!capable(CAP_SYS_ADMIN))
1969 if (mp->m_flags & XFS_MOUNT_RDONLY)
1972 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1975 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
1979 return xfs_icache_free_eofblocks(mp, &keofb);