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/cred.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 = d_inode(path.dentry);
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 = inode->i_generation;
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))
212 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
214 return PTR_ERR(dentry);
215 inode = d_inode(dentry);
217 /* Restrict xfs_open_by_handle to directories & regular files. */
218 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
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)) {
235 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
240 /* Can't write directories. */
241 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
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;
283 if (!capable(CAP_SYS_ADMIN))
286 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
288 return PTR_ERR(dentry);
290 /* Restrict this handle operation to symlinks only. */
291 if (!d_is_symlink(dentry)) {
296 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
301 error = vfs_readlink(dentry, hreq->ohandle, olen);
314 xfs_mount_t *mp = ip->i_mount;
318 if (!capable(CAP_SYS_ADMIN))
321 if (XFS_FORCED_SHUTDOWN(mp))
324 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
328 xfs_ilock(ip, XFS_ILOCK_EXCL);
329 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
331 ip->i_d.di_dmevmask = evmask;
332 ip->i_d.di_dmstate = state;
334 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
335 error = xfs_trans_commit(tp);
341 xfs_fssetdm_by_handle(
342 struct file *parfilp,
346 struct fsdmidata fsd;
347 xfs_fsop_setdm_handlereq_t dmhreq;
348 struct dentry *dentry;
350 if (!capable(CAP_MKNOD))
352 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
355 error = mnt_want_write_file(parfilp);
359 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
360 if (IS_ERR(dentry)) {
361 mnt_drop_write_file(parfilp);
362 return PTR_ERR(dentry);
365 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
370 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
375 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
379 mnt_drop_write_file(parfilp);
385 xfs_attrlist_by_handle(
386 struct file *parfilp,
390 attrlist_cursor_kern_t *cursor;
391 struct xfs_fsop_attrlist_handlereq __user *p = arg;
392 xfs_fsop_attrlist_handlereq_t al_hreq;
393 struct dentry *dentry;
396 if (!capable(CAP_SYS_ADMIN))
398 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
400 if (al_hreq.buflen < sizeof(struct attrlist) ||
401 al_hreq.buflen > XFS_XATTR_LIST_MAX)
405 * Reject flags, only allow namespaces.
407 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
410 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
412 return PTR_ERR(dentry);
414 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
418 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
419 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
420 al_hreq.flags, cursor);
424 if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
429 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
440 xfs_attrmulti_attr_get(
443 unsigned char __user *ubuf,
450 if (*len > XFS_XATTR_SIZE_MAX)
452 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
456 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
460 if (copy_to_user(ubuf, kbuf, *len))
469 xfs_attrmulti_attr_set(
472 const unsigned char __user *ubuf,
479 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
481 if (len > XFS_XATTR_SIZE_MAX)
484 kbuf = memdup_user(ubuf, len);
486 return PTR_ERR(kbuf);
488 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
490 xfs_forget_acl(inode, name, flags);
496 xfs_attrmulti_attr_remove(
503 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
505 error = xfs_attr_remove(XFS_I(inode), name, flags);
507 xfs_forget_acl(inode, name, flags);
512 xfs_attrmulti_by_handle(
513 struct file *parfilp,
517 xfs_attr_multiop_t *ops;
518 xfs_fsop_attrmulti_handlereq_t am_hreq;
519 struct dentry *dentry;
520 unsigned int i, size;
521 unsigned char *attr_name;
523 if (!capable(CAP_SYS_ADMIN))
525 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
529 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
532 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
534 return PTR_ERR(dentry);
537 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
538 if (!size || size > 16 * PAGE_SIZE)
541 ops = memdup_user(am_hreq.ops, size);
543 error = PTR_ERR(ops);
548 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
553 for (i = 0; i < am_hreq.opcount; i++) {
554 ops[i].am_error = strncpy_from_user((char *)attr_name,
555 ops[i].am_attrname, MAXNAMELEN);
556 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
558 if (ops[i].am_error < 0)
561 switch (ops[i].am_opcode) {
563 ops[i].am_error = xfs_attrmulti_attr_get(
564 d_inode(dentry), attr_name,
565 ops[i].am_attrvalue, &ops[i].am_length,
569 ops[i].am_error = mnt_want_write_file(parfilp);
572 ops[i].am_error = xfs_attrmulti_attr_set(
573 d_inode(dentry), attr_name,
574 ops[i].am_attrvalue, ops[i].am_length,
576 mnt_drop_write_file(parfilp);
579 ops[i].am_error = mnt_want_write_file(parfilp);
582 ops[i].am_error = xfs_attrmulti_attr_remove(
583 d_inode(dentry), attr_name,
585 mnt_drop_write_file(parfilp);
588 ops[i].am_error = -EINVAL;
592 if (copy_to_user(am_hreq.ops, ops, size))
609 struct inode *inode = file_inode(filp);
610 struct xfs_inode *ip = XFS_I(inode);
612 enum xfs_prealloc_flags flags = 0;
613 uint iolock = XFS_IOLOCK_EXCL;
617 * Only allow the sys admin to reserve space unless
618 * unwritten extents are enabled.
620 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
621 !capable(CAP_SYS_ADMIN))
624 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
627 if (!(filp->f_mode & FMODE_WRITE))
630 if (!S_ISREG(inode->i_mode))
633 if (filp->f_flags & O_DSYNC)
634 flags |= XFS_PREALLOC_SYNC;
635 if (filp->f_mode & FMODE_NOCMTIME)
636 flags |= XFS_PREALLOC_INVISIBLE;
638 error = mnt_want_write_file(filp);
642 xfs_ilock(ip, iolock);
643 error = xfs_break_layouts(inode, &iolock);
647 xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
648 iolock |= XFS_MMAPLOCK_EXCL;
650 switch (bf->l_whence) {
654 bf->l_start += filp->f_pos;
657 bf->l_start += XFS_ISIZE(ip);
665 * length of <= 0 for resv/unresv/zero is invalid. length for
666 * alloc/free is ignored completely and we have no idea what userspace
667 * might have set it to, so set it to zero to allow range
671 case XFS_IOC_ZERO_RANGE:
673 case XFS_IOC_RESVSP64:
674 case XFS_IOC_UNRESVSP:
675 case XFS_IOC_UNRESVSP64:
676 if (bf->l_len <= 0) {
686 if (bf->l_start < 0 ||
687 bf->l_start > inode->i_sb->s_maxbytes ||
688 bf->l_start + bf->l_len < 0 ||
689 bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
695 case XFS_IOC_ZERO_RANGE:
696 flags |= XFS_PREALLOC_SET;
697 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
700 case XFS_IOC_RESVSP64:
701 flags |= XFS_PREALLOC_SET;
702 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
705 case XFS_IOC_UNRESVSP:
706 case XFS_IOC_UNRESVSP64:
707 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
709 case XFS_IOC_ALLOCSP:
710 case XFS_IOC_ALLOCSP64:
712 case XFS_IOC_FREESP64:
713 flags |= XFS_PREALLOC_CLEAR;
714 if (bf->l_start > XFS_ISIZE(ip)) {
715 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
716 bf->l_start - XFS_ISIZE(ip), 0);
721 iattr.ia_valid = ATTR_SIZE;
722 iattr.ia_size = bf->l_start;
724 error = xfs_vn_setattr_size(file_dentry(filp), &iattr);
734 error = xfs_update_prealloc_flags(ip, flags);
737 xfs_iunlock(ip, iolock);
738 mnt_drop_write_file(filp);
748 xfs_fsop_bulkreq_t bulkreq;
749 int count; /* # of records returned */
750 xfs_ino_t inlast; /* last inode number */
754 /* done = 1 if there are more stats to get and if bulkstat */
755 /* should be called again (unused here, but used in dmapi) */
757 if (!capable(CAP_SYS_ADMIN))
760 if (XFS_FORCED_SHUTDOWN(mp))
763 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
766 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
769 if ((count = bulkreq.icount) <= 0)
772 if (bulkreq.ubuffer == NULL)
775 if (cmd == XFS_IOC_FSINUMBERS)
776 error = xfs_inumbers(mp, &inlast, &count,
777 bulkreq.ubuffer, xfs_inumbers_fmt);
778 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
779 error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer,
780 sizeof(xfs_bstat_t), NULL, &done);
781 else /* XFS_IOC_FSBULKSTAT */
782 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
783 sizeof(xfs_bstat_t), bulkreq.ubuffer,
789 if (bulkreq.ocount != NULL) {
790 if (copy_to_user(bulkreq.lastip, &inlast,
794 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
802 xfs_ioc_fsgeometry_v1(
806 xfs_fsop_geom_t fsgeo;
809 error = xfs_fs_geometry(mp, &fsgeo, 3);
814 * Caller should have passed an argument of type
815 * xfs_fsop_geom_v1_t. This is a proper subset of the
816 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
818 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
828 xfs_fsop_geom_t fsgeo;
831 error = xfs_fs_geometry(mp, &fsgeo, 4);
835 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
841 * Linux extended inode flags interface.
845 xfs_merge_ioc_xflags(
849 unsigned int xflags = start;
851 if (flags & FS_IMMUTABLE_FL)
852 xflags |= FS_XFLAG_IMMUTABLE;
854 xflags &= ~FS_XFLAG_IMMUTABLE;
855 if (flags & FS_APPEND_FL)
856 xflags |= FS_XFLAG_APPEND;
858 xflags &= ~FS_XFLAG_APPEND;
859 if (flags & FS_SYNC_FL)
860 xflags |= FS_XFLAG_SYNC;
862 xflags &= ~FS_XFLAG_SYNC;
863 if (flags & FS_NOATIME_FL)
864 xflags |= FS_XFLAG_NOATIME;
866 xflags &= ~FS_XFLAG_NOATIME;
867 if (flags & FS_NODUMP_FL)
868 xflags |= FS_XFLAG_NODUMP;
870 xflags &= ~FS_XFLAG_NODUMP;
879 unsigned int flags = 0;
881 if (di_flags & XFS_DIFLAG_IMMUTABLE)
882 flags |= FS_IMMUTABLE_FL;
883 if (di_flags & XFS_DIFLAG_APPEND)
884 flags |= FS_APPEND_FL;
885 if (di_flags & XFS_DIFLAG_SYNC)
887 if (di_flags & XFS_DIFLAG_NOATIME)
888 flags |= FS_NOATIME_FL;
889 if (di_flags & XFS_DIFLAG_NODUMP)
890 flags |= FS_NODUMP_FL;
902 memset(&fa, 0, sizeof(struct fsxattr));
904 xfs_ilock(ip, XFS_ILOCK_SHARED);
905 fa.fsx_xflags = xfs_ip2xflags(ip);
906 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
907 fa.fsx_cowextsize = ip->i_d.di_cowextsize <<
908 ip->i_mount->m_sb.sb_blocklog;
909 fa.fsx_projid = xfs_get_projid(ip);
913 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
914 fa.fsx_nextents = xfs_iext_count(ip->i_afp);
916 fa.fsx_nextents = ip->i_d.di_anextents;
920 if (ip->i_df.if_flags & XFS_IFEXTENTS)
921 fa.fsx_nextents = xfs_iext_count(&ip->i_df);
923 fa.fsx_nextents = ip->i_d.di_nextents;
925 xfs_iunlock(ip, XFS_ILOCK_SHARED);
927 if (copy_to_user(arg, &fa, sizeof(fa)))
934 struct xfs_inode *ip,
937 unsigned int di_flags;
940 /* can't set PREALLOC this way, just preserve it */
941 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
942 if (xflags & FS_XFLAG_IMMUTABLE)
943 di_flags |= XFS_DIFLAG_IMMUTABLE;
944 if (xflags & FS_XFLAG_APPEND)
945 di_flags |= XFS_DIFLAG_APPEND;
946 if (xflags & FS_XFLAG_SYNC)
947 di_flags |= XFS_DIFLAG_SYNC;
948 if (xflags & FS_XFLAG_NOATIME)
949 di_flags |= XFS_DIFLAG_NOATIME;
950 if (xflags & FS_XFLAG_NODUMP)
951 di_flags |= XFS_DIFLAG_NODUMP;
952 if (xflags & FS_XFLAG_NODEFRAG)
953 di_flags |= XFS_DIFLAG_NODEFRAG;
954 if (xflags & FS_XFLAG_FILESTREAM)
955 di_flags |= XFS_DIFLAG_FILESTREAM;
956 if (S_ISDIR(VFS_I(ip)->i_mode)) {
957 if (xflags & FS_XFLAG_RTINHERIT)
958 di_flags |= XFS_DIFLAG_RTINHERIT;
959 if (xflags & FS_XFLAG_NOSYMLINKS)
960 di_flags |= XFS_DIFLAG_NOSYMLINKS;
961 if (xflags & FS_XFLAG_EXTSZINHERIT)
962 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
963 if (xflags & FS_XFLAG_PROJINHERIT)
964 di_flags |= XFS_DIFLAG_PROJINHERIT;
965 } else if (S_ISREG(VFS_I(ip)->i_mode)) {
966 if (xflags & FS_XFLAG_REALTIME)
967 di_flags |= XFS_DIFLAG_REALTIME;
968 if (xflags & FS_XFLAG_EXTSIZE)
969 di_flags |= XFS_DIFLAG_EXTSIZE;
971 ip->i_d.di_flags = di_flags;
973 /* diflags2 only valid for v3 inodes. */
974 if (ip->i_d.di_version < 3)
977 di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
978 if (xflags & FS_XFLAG_DAX)
979 di_flags2 |= XFS_DIFLAG2_DAX;
980 if (xflags & FS_XFLAG_COWEXTSIZE)
981 di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
983 ip->i_d.di_flags2 = di_flags2;
987 xfs_diflags_to_linux(
988 struct xfs_inode *ip)
990 struct inode *inode = VFS_I(ip);
991 unsigned int xflags = xfs_ip2xflags(ip);
993 if (xflags & FS_XFLAG_IMMUTABLE)
994 inode->i_flags |= S_IMMUTABLE;
996 inode->i_flags &= ~S_IMMUTABLE;
997 if (xflags & FS_XFLAG_APPEND)
998 inode->i_flags |= S_APPEND;
1000 inode->i_flags &= ~S_APPEND;
1001 if (xflags & FS_XFLAG_SYNC)
1002 inode->i_flags |= S_SYNC;
1004 inode->i_flags &= ~S_SYNC;
1005 if (xflags & FS_XFLAG_NOATIME)
1006 inode->i_flags |= S_NOATIME;
1008 inode->i_flags &= ~S_NOATIME;
1009 if (xflags & FS_XFLAG_DAX)
1010 inode->i_flags |= S_DAX;
1012 inode->i_flags &= ~S_DAX;
1017 xfs_ioctl_setattr_xflags(
1018 struct xfs_trans *tp,
1019 struct xfs_inode *ip,
1022 struct xfs_mount *mp = ip->i_mount;
1024 /* Can't change realtime flag if any extents are allocated. */
1025 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1026 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1029 /* If realtime flag is set then must have realtime device */
1030 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1031 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1032 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
1036 /* Clear reflink if we are actually able to set the rt flag. */
1037 if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
1038 ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
1040 /* Don't allow us to set DAX mode for a reflinked file for now. */
1041 if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
1045 * Can't modify an immutable/append-only file unless
1046 * we have appropriate permission.
1048 if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
1049 (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
1050 !capable(CAP_LINUX_IMMUTABLE))
1053 xfs_set_diflags(ip, fa->fsx_xflags);
1054 xfs_diflags_to_linux(ip);
1055 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1056 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1057 XFS_STATS_INC(mp, xs_ig_attrchg);
1062 * If we are changing DAX flags, we have to ensure the file is clean and any
1063 * cached objects in the address space are invalidated and removed. This
1064 * requires us to lock out other IO and page faults similar to a truncate
1065 * operation. The locks need to be held until the transaction has been committed
1066 * so that the cache invalidation is atomic with respect to the DAX flag
1070 xfs_ioctl_setattr_dax_invalidate(
1071 struct xfs_inode *ip,
1075 struct inode *inode = VFS_I(ip);
1081 * It is only valid to set the DAX flag on regular files and
1082 * directories on filesystems where the block size is equal to the page
1083 * size. On directories it serves as an inherit hint.
1085 if (fa->fsx_xflags & FS_XFLAG_DAX) {
1086 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
1088 if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE)
1092 /* If the DAX state is not changing, we have nothing to do here. */
1093 if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
1095 if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
1098 /* lock, flush and invalidate mapping in preparation for flag change */
1099 xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1100 error = filemap_write_and_wait(inode->i_mapping);
1103 error = invalidate_inode_pages2(inode->i_mapping);
1107 *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
1111 xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1117 * Set up the transaction structure for the setattr operation, checking that we
1118 * have permission to do so. On success, return a clean transaction and the
1119 * inode locked exclusively ready for further operation specific checks. On
1120 * failure, return an error without modifying or locking the inode.
1122 * The inode might already be IO locked on call. If this is the case, it is
1123 * indicated in @join_flags and we take full responsibility for ensuring they
1124 * are unlocked from now on. Hence if we have an error here, we still have to
1125 * unlock them. Otherwise, once they are joined to the transaction, they will
1126 * be unlocked on commit/cancel.
1128 static struct xfs_trans *
1129 xfs_ioctl_setattr_get_trans(
1130 struct xfs_inode *ip,
1133 struct xfs_mount *mp = ip->i_mount;
1134 struct xfs_trans *tp;
1137 if (mp->m_flags & XFS_MOUNT_RDONLY)
1140 if (XFS_FORCED_SHUTDOWN(mp))
1143 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1145 return ERR_PTR(error);
1147 xfs_ilock(ip, XFS_ILOCK_EXCL);
1148 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
1152 * CAP_FOWNER overrides the following restrictions:
1154 * The user ID of the calling process must be equal to the file owner
1155 * ID, except in cases where the CAP_FSETID capability is applicable.
1157 if (!inode_owner_or_capable(VFS_I(ip))) {
1162 if (mp->m_flags & XFS_MOUNT_WSYNC)
1163 xfs_trans_set_sync(tp);
1168 xfs_trans_cancel(tp);
1171 xfs_iunlock(ip, join_flags);
1172 return ERR_PTR(error);
1176 * extent size hint validation is somewhat cumbersome. Rules are:
1178 * 1. extent size hint is only valid for directories and regular files
1179 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1180 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1181 * 4. can only be changed on regular files if no extents are allocated
1182 * 5. can be changed on directories at any time
1183 * 6. extsize hint of 0 turns off hints, clears inode flags.
1184 * 7. Extent size must be a multiple of the appropriate block size.
1185 * 8. for non-realtime files, the extent size hint must be limited
1186 * to half the AG size to avoid alignment extending the extent beyond the
1190 xfs_ioctl_setattr_check_extsize(
1191 struct xfs_inode *ip,
1194 struct xfs_mount *mp = ip->i_mount;
1196 if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
1199 if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
1200 !S_ISDIR(VFS_I(ip)->i_mode))
1203 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
1204 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
1207 if (fa->fsx_extsize != 0) {
1209 xfs_fsblock_t extsize_fsb;
1211 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1212 if (extsize_fsb > MAXEXTLEN)
1215 if (XFS_IS_REALTIME_INODE(ip) ||
1216 (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
1217 size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
1219 size = mp->m_sb.sb_blocksize;
1220 if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
1224 if (fa->fsx_extsize % size)
1227 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
1233 * CoW extent size hint validation rules are:
1235 * 1. CoW extent size hint can only be set if reflink is enabled on the fs.
1236 * The inode does not have to have any shared blocks, but it must be a v3.
1237 * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
1238 * for a directory, the hint is propagated to new files.
1239 * 3. Can be changed on files & directories at any time.
1240 * 4. CoW extsize hint of 0 turns off hints, clears inode flags.
1241 * 5. Extent size must be a multiple of the appropriate block size.
1242 * 6. The extent size hint must be limited to half the AG size to avoid
1243 * alignment extending the extent beyond the limits of the AG.
1246 xfs_ioctl_setattr_check_cowextsize(
1247 struct xfs_inode *ip,
1250 struct xfs_mount *mp = ip->i_mount;
1252 if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
1255 if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) ||
1256 ip->i_d.di_version != 3)
1259 if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
1262 if (fa->fsx_cowextsize != 0) {
1264 xfs_fsblock_t cowextsize_fsb;
1266 cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
1267 if (cowextsize_fsb > MAXEXTLEN)
1270 size = mp->m_sb.sb_blocksize;
1271 if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
1274 if (fa->fsx_cowextsize % size)
1277 fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
1283 xfs_ioctl_setattr_check_projid(
1284 struct xfs_inode *ip,
1287 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1288 if (fa->fsx_projid > (__uint16_t)-1 &&
1289 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1293 * Project Quota ID state is only allowed to change from within the init
1294 * namespace. Enforce that restriction only if we are trying to change
1295 * the quota ID state. Everything else is allowed in user namespaces.
1297 if (current_user_ns() == &init_user_ns)
1300 if (xfs_get_projid(ip) != fa->fsx_projid)
1302 if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
1303 (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
1314 struct xfs_mount *mp = ip->i_mount;
1315 struct xfs_trans *tp;
1316 struct xfs_dquot *udqp = NULL;
1317 struct xfs_dquot *pdqp = NULL;
1318 struct xfs_dquot *olddquot = NULL;
1322 trace_xfs_ioctl_setattr(ip);
1324 code = xfs_ioctl_setattr_check_projid(ip, fa);
1329 * If disk quotas is on, we make sure that the dquots do exist on disk,
1330 * before we start any other transactions. Trying to do this later
1331 * is messy. We don't care to take a readlock to look at the ids
1332 * in inode here, because we can't hold it across the trans_reserve.
1333 * If the IDs do change before we take the ilock, we're covered
1334 * because the i_*dquot fields will get updated anyway.
1336 if (XFS_IS_QUOTA_ON(mp)) {
1337 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1338 ip->i_d.di_gid, fa->fsx_projid,
1339 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1345 * Changing DAX config may require inode locking for mapping
1346 * invalidation. These need to be held all the way to transaction commit
1347 * or cancel time, so need to be passed through to
1348 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1351 code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
1353 goto error_free_dquots;
1355 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1358 goto error_free_dquots;
1362 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
1363 xfs_get_projid(ip) != fa->fsx_projid) {
1364 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
1365 capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
1366 if (code) /* out of quota */
1367 goto error_trans_cancel;
1370 code = xfs_ioctl_setattr_check_extsize(ip, fa);
1372 goto error_trans_cancel;
1374 code = xfs_ioctl_setattr_check_cowextsize(ip, fa);
1376 goto error_trans_cancel;
1378 code = xfs_ioctl_setattr_xflags(tp, ip, fa);
1380 goto error_trans_cancel;
1383 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1384 * overrides the following restrictions:
1386 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1387 * successful return from chown()
1390 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1391 !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
1392 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1394 /* Change the ownerships and register project quota modifications */
1395 if (xfs_get_projid(ip) != fa->fsx_projid) {
1396 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1397 olddquot = xfs_qm_vop_chown(tp, ip,
1398 &ip->i_pdquot, pdqp);
1400 ASSERT(ip->i_d.di_version > 1);
1401 xfs_set_projid(ip, fa->fsx_projid);
1405 * Only set the extent size hint if we've already determined that the
1406 * extent size hint should be set on the inode. If no extent size flags
1407 * are set on the inode then unconditionally clear the extent size hint.
1409 if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1410 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1412 ip->i_d.di_extsize = 0;
1413 if (ip->i_d.di_version == 3 &&
1414 (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
1415 ip->i_d.di_cowextsize = fa->fsx_cowextsize >>
1416 mp->m_sb.sb_blocklog;
1418 ip->i_d.di_cowextsize = 0;
1420 code = xfs_trans_commit(tp);
1423 * Release any dquot(s) the inode had kept before chown.
1425 xfs_qm_dqrele(olddquot);
1426 xfs_qm_dqrele(udqp);
1427 xfs_qm_dqrele(pdqp);
1432 xfs_trans_cancel(tp);
1434 xfs_qm_dqrele(udqp);
1435 xfs_qm_dqrele(pdqp);
1448 if (copy_from_user(&fa, arg, sizeof(fa)))
1451 error = mnt_want_write_file(filp);
1454 error = xfs_ioctl_setattr(ip, &fa);
1455 mnt_drop_write_file(filp);
1466 flags = xfs_di2lxflags(ip->i_d.di_flags);
1467 if (copy_to_user(arg, &flags, sizeof(flags)))
1474 struct xfs_inode *ip,
1478 struct xfs_trans *tp;
1484 if (copy_from_user(&flags, arg, sizeof(flags)))
1487 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1488 FS_NOATIME_FL | FS_NODUMP_FL | \
1492 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1494 error = mnt_want_write_file(filp);
1499 * Changing DAX config may require inode locking for mapping
1500 * invalidation. These need to be held all the way to transaction commit
1501 * or cancel time, so need to be passed through to
1502 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1505 error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
1507 goto out_drop_write;
1509 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1511 error = PTR_ERR(tp);
1512 goto out_drop_write;
1515 error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
1517 xfs_trans_cancel(tp);
1518 goto out_drop_write;
1521 error = xfs_trans_commit(tp);
1523 mnt_drop_write_file(filp);
1528 xfs_getbmap_format(void **ap, struct getbmapx *bmv)
1530 struct getbmap __user *base = (struct getbmap __user *)*ap;
1532 /* copy only getbmap portion (not getbmapx) */
1533 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1536 *ap += sizeof(struct getbmap);
1546 struct getbmapx bmx;
1549 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1552 if (bmx.bmv_count < 2)
1555 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1556 if (file->f_mode & FMODE_NOCMTIME)
1557 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1559 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
1560 (__force struct getbmap *)arg+1);
1564 /* copy back header - only size of getbmap */
1565 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1571 xfs_getbmapx_format(void **ap, struct getbmapx *bmv)
1573 struct getbmapx __user *base = (struct getbmapx __user *)*ap;
1575 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1578 *ap += sizeof(struct getbmapx);
1584 struct xfs_inode *ip,
1587 struct getbmapx bmx;
1590 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1593 if (bmx.bmv_count < 2)
1596 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1599 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1600 (__force struct getbmapx *)arg+1);
1604 /* copy back header */
1605 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1615 xfs_inode_t *ip, *tip;
1619 /* Pull information for the target fd */
1620 f = fdget((int)sxp->sx_fdtarget);
1626 if (!(f.file->f_mode & FMODE_WRITE) ||
1627 !(f.file->f_mode & FMODE_READ) ||
1628 (f.file->f_flags & O_APPEND)) {
1633 tmp = fdget((int)sxp->sx_fdtmp);
1639 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1640 !(tmp.file->f_mode & FMODE_READ) ||
1641 (tmp.file->f_flags & O_APPEND)) {
1643 goto out_put_tmp_file;
1646 if (IS_SWAPFILE(file_inode(f.file)) ||
1647 IS_SWAPFILE(file_inode(tmp.file))) {
1649 goto out_put_tmp_file;
1653 * We need to ensure that the fds passed in point to XFS inodes
1654 * before we cast and access them as XFS structures as we have no
1655 * control over what the user passes us here.
1657 if (f.file->f_op != &xfs_file_operations ||
1658 tmp.file->f_op != &xfs_file_operations) {
1660 goto out_put_tmp_file;
1663 ip = XFS_I(file_inode(f.file));
1664 tip = XFS_I(file_inode(tmp.file));
1666 if (ip->i_mount != tip->i_mount) {
1668 goto out_put_tmp_file;
1671 if (ip->i_ino == tip->i_ino) {
1673 goto out_put_tmp_file;
1676 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1678 goto out_put_tmp_file;
1681 error = xfs_swap_extents(ip, tip, sxp);
1692 * Note: some of the ioctl's return positive numbers as a
1693 * byte count indicating success, such as readlink_by_handle.
1694 * So we don't "sign flip" like most other routines. This means
1695 * true errors need to be returned as a negative value.
1703 struct inode *inode = file_inode(filp);
1704 struct xfs_inode *ip = XFS_I(inode);
1705 struct xfs_mount *mp = ip->i_mount;
1706 void __user *arg = (void __user *)p;
1709 trace_xfs_file_ioctl(ip);
1713 return xfs_ioc_trim(mp, arg);
1714 case XFS_IOC_ALLOCSP:
1715 case XFS_IOC_FREESP:
1716 case XFS_IOC_RESVSP:
1717 case XFS_IOC_UNRESVSP:
1718 case XFS_IOC_ALLOCSP64:
1719 case XFS_IOC_FREESP64:
1720 case XFS_IOC_RESVSP64:
1721 case XFS_IOC_UNRESVSP64:
1722 case XFS_IOC_ZERO_RANGE: {
1725 if (copy_from_user(&bf, arg, sizeof(bf)))
1727 return xfs_ioc_space(filp, cmd, &bf);
1729 case XFS_IOC_DIOINFO: {
1731 xfs_buftarg_t *target =
1732 XFS_IS_REALTIME_INODE(ip) ?
1733 mp->m_rtdev_targp : mp->m_ddev_targp;
1735 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1736 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1738 if (copy_to_user(arg, &da, sizeof(da)))
1743 case XFS_IOC_FSBULKSTAT_SINGLE:
1744 case XFS_IOC_FSBULKSTAT:
1745 case XFS_IOC_FSINUMBERS:
1746 return xfs_ioc_bulkstat(mp, cmd, arg);
1748 case XFS_IOC_FSGEOMETRY_V1:
1749 return xfs_ioc_fsgeometry_v1(mp, arg);
1751 case XFS_IOC_FSGEOMETRY:
1752 return xfs_ioc_fsgeometry(mp, arg);
1754 case XFS_IOC_GETVERSION:
1755 return put_user(inode->i_generation, (int __user *)arg);
1757 case XFS_IOC_FSGETXATTR:
1758 return xfs_ioc_fsgetxattr(ip, 0, arg);
1759 case XFS_IOC_FSGETXATTRA:
1760 return xfs_ioc_fsgetxattr(ip, 1, arg);
1761 case XFS_IOC_FSSETXATTR:
1762 return xfs_ioc_fssetxattr(ip, filp, arg);
1763 case XFS_IOC_GETXFLAGS:
1764 return xfs_ioc_getxflags(ip, arg);
1765 case XFS_IOC_SETXFLAGS:
1766 return xfs_ioc_setxflags(ip, filp, arg);
1768 case XFS_IOC_FSSETDM: {
1769 struct fsdmidata dmi;
1771 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1774 error = mnt_want_write_file(filp);
1778 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1780 mnt_drop_write_file(filp);
1784 case XFS_IOC_GETBMAP:
1785 case XFS_IOC_GETBMAPA:
1786 return xfs_ioc_getbmap(filp, cmd, arg);
1788 case XFS_IOC_GETBMAPX:
1789 return xfs_ioc_getbmapx(ip, arg);
1791 case XFS_IOC_FD_TO_HANDLE:
1792 case XFS_IOC_PATH_TO_HANDLE:
1793 case XFS_IOC_PATH_TO_FSHANDLE: {
1794 xfs_fsop_handlereq_t hreq;
1796 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1798 return xfs_find_handle(cmd, &hreq);
1800 case XFS_IOC_OPEN_BY_HANDLE: {
1801 xfs_fsop_handlereq_t hreq;
1803 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1805 return xfs_open_by_handle(filp, &hreq);
1807 case XFS_IOC_FSSETDM_BY_HANDLE:
1808 return xfs_fssetdm_by_handle(filp, arg);
1810 case XFS_IOC_READLINK_BY_HANDLE: {
1811 xfs_fsop_handlereq_t hreq;
1813 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1815 return xfs_readlink_by_handle(filp, &hreq);
1817 case XFS_IOC_ATTRLIST_BY_HANDLE:
1818 return xfs_attrlist_by_handle(filp, arg);
1820 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1821 return xfs_attrmulti_by_handle(filp, arg);
1823 case XFS_IOC_SWAPEXT: {
1824 struct xfs_swapext sxp;
1826 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1828 error = mnt_want_write_file(filp);
1831 error = xfs_ioc_swapext(&sxp);
1832 mnt_drop_write_file(filp);
1836 case XFS_IOC_FSCOUNTS: {
1837 xfs_fsop_counts_t out;
1839 error = xfs_fs_counts(mp, &out);
1843 if (copy_to_user(arg, &out, sizeof(out)))
1848 case XFS_IOC_SET_RESBLKS: {
1849 xfs_fsop_resblks_t inout;
1852 if (!capable(CAP_SYS_ADMIN))
1855 if (mp->m_flags & XFS_MOUNT_RDONLY)
1858 if (copy_from_user(&inout, arg, sizeof(inout)))
1861 error = mnt_want_write_file(filp);
1865 /* input parameter is passed in resblks field of structure */
1867 error = xfs_reserve_blocks(mp, &in, &inout);
1868 mnt_drop_write_file(filp);
1872 if (copy_to_user(arg, &inout, sizeof(inout)))
1877 case XFS_IOC_GET_RESBLKS: {
1878 xfs_fsop_resblks_t out;
1880 if (!capable(CAP_SYS_ADMIN))
1883 error = xfs_reserve_blocks(mp, NULL, &out);
1887 if (copy_to_user(arg, &out, sizeof(out)))
1893 case XFS_IOC_FSGROWFSDATA: {
1894 xfs_growfs_data_t in;
1896 if (copy_from_user(&in, arg, sizeof(in)))
1899 error = mnt_want_write_file(filp);
1902 error = xfs_growfs_data(mp, &in);
1903 mnt_drop_write_file(filp);
1907 case XFS_IOC_FSGROWFSLOG: {
1908 xfs_growfs_log_t in;
1910 if (copy_from_user(&in, arg, sizeof(in)))
1913 error = mnt_want_write_file(filp);
1916 error = xfs_growfs_log(mp, &in);
1917 mnt_drop_write_file(filp);
1921 case XFS_IOC_FSGROWFSRT: {
1924 if (copy_from_user(&in, arg, sizeof(in)))
1927 error = mnt_want_write_file(filp);
1930 error = xfs_growfs_rt(mp, &in);
1931 mnt_drop_write_file(filp);
1935 case XFS_IOC_GOINGDOWN: {
1938 if (!capable(CAP_SYS_ADMIN))
1941 if (get_user(in, (__uint32_t __user *)arg))
1944 return xfs_fs_goingdown(mp, in);
1947 case XFS_IOC_ERROR_INJECTION: {
1948 xfs_error_injection_t in;
1950 if (!capable(CAP_SYS_ADMIN))
1953 if (copy_from_user(&in, arg, sizeof(in)))
1956 return xfs_errortag_add(in.errtag, mp);
1959 case XFS_IOC_ERROR_CLEARALL:
1960 if (!capable(CAP_SYS_ADMIN))
1963 return xfs_errortag_clearall(mp, 1);
1965 case XFS_IOC_FREE_EOFBLOCKS: {
1966 struct xfs_fs_eofblocks eofb;
1967 struct xfs_eofblocks keofb;
1969 if (!capable(CAP_SYS_ADMIN))
1972 if (mp->m_flags & XFS_MOUNT_RDONLY)
1975 if (copy_from_user(&eofb, arg, sizeof(eofb)))
1978 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
1982 return xfs_icache_free_eofblocks(mp, &keofb);