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"
44 #include "xfs_btree.h"
45 #include <linux/fsmap.h>
46 #include "xfs_fsmap.h"
48 #include <linux/capability.h>
49 #include <linux/cred.h>
50 #include <linux/dcache.h>
51 #include <linux/mount.h>
52 #include <linux/namei.h>
53 #include <linux/pagemap.h>
54 #include <linux/slab.h>
55 #include <linux/exportfs.h>
58 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
59 * a file or fs handle.
61 * XFS_IOC_PATH_TO_FSHANDLE
62 * returns fs handle for a mount point or path within that mount point
63 * XFS_IOC_FD_TO_HANDLE
64 * returns full handle for a FD opened in user space
65 * XFS_IOC_PATH_TO_HANDLE
66 * returns full handle for a path
71 xfs_fsop_handlereq_t *hreq)
81 if (cmd == XFS_IOC_FD_TO_HANDLE) {
85 inode = file_inode(f.file);
87 error = user_lpath((const char __user *)hreq->path, &path);
90 inode = d_inode(path.dentry);
95 * We can only generate handles for inodes residing on a XFS filesystem,
96 * and only for regular files, directories or symbolic links.
99 if (inode->i_sb->s_magic != XFS_SB_MAGIC)
103 if (!S_ISREG(inode->i_mode) &&
104 !S_ISDIR(inode->i_mode) &&
105 !S_ISLNK(inode->i_mode))
109 memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
111 if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
113 * This handle only contains an fsid, zero the rest.
115 memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
116 hsize = sizeof(xfs_fsid_t);
118 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
119 sizeof(handle.ha_fid.fid_len);
120 handle.ha_fid.fid_pad = 0;
121 handle.ha_fid.fid_gen = inode->i_generation;
122 handle.ha_fid.fid_ino = ip->i_ino;
123 hsize = sizeof(xfs_handle_t);
127 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
128 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
134 if (cmd == XFS_IOC_FD_TO_HANDLE)
142 * No need to do permission checks on the various pathname components
143 * as the handle operations are privileged.
146 xfs_handle_acceptable(
148 struct dentry *dentry)
154 * Convert userspace handle data into a dentry.
157 xfs_handle_to_dentry(
158 struct file *parfilp,
159 void __user *uhandle,
163 struct xfs_fid64 fid;
166 * Only allow handle opens under a directory.
168 if (!S_ISDIR(file_inode(parfilp)->i_mode))
169 return ERR_PTR(-ENOTDIR);
171 if (hlen != sizeof(xfs_handle_t))
172 return ERR_PTR(-EINVAL);
173 if (copy_from_user(&handle, uhandle, hlen))
174 return ERR_PTR(-EFAULT);
175 if (handle.ha_fid.fid_len !=
176 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
177 return ERR_PTR(-EINVAL);
179 memset(&fid, 0, sizeof(struct fid));
180 fid.ino = handle.ha_fid.fid_ino;
181 fid.gen = handle.ha_fid.fid_gen;
183 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
184 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
185 xfs_handle_acceptable, NULL);
188 STATIC struct dentry *
189 xfs_handlereq_to_dentry(
190 struct file *parfilp,
191 xfs_fsop_handlereq_t *hreq)
193 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
198 struct file *parfilp,
199 xfs_fsop_handlereq_t *hreq)
201 const struct cred *cred = current_cred();
207 struct dentry *dentry;
211 if (!capable(CAP_SYS_ADMIN))
214 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
216 return PTR_ERR(dentry);
217 inode = d_inode(dentry);
219 /* Restrict xfs_open_by_handle to directories & regular files. */
220 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
225 #if BITS_PER_LONG != 32
226 hreq->oflags |= O_LARGEFILE;
229 permflag = hreq->oflags;
230 fmode = OPEN_FMODE(permflag);
231 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
232 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
237 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
242 /* Can't write directories. */
243 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
248 fd = get_unused_fd_flags(0);
254 path.mnt = parfilp->f_path.mnt;
255 path.dentry = dentry;
256 filp = dentry_open(&path, hreq->oflags, cred);
260 return PTR_ERR(filp);
263 if (S_ISREG(inode->i_mode)) {
264 filp->f_flags |= O_NOATIME;
265 filp->f_mode |= FMODE_NOCMTIME;
268 fd_install(fd, filp);
277 xfs_readlink_by_handle(
278 struct file *parfilp,
279 xfs_fsop_handlereq_t *hreq)
281 struct dentry *dentry;
285 if (!capable(CAP_SYS_ADMIN))
288 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
290 return PTR_ERR(dentry);
292 /* Restrict this handle operation to symlinks only. */
293 if (!d_is_symlink(dentry)) {
298 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
303 error = vfs_readlink(dentry, hreq->ohandle, olen);
316 xfs_mount_t *mp = ip->i_mount;
320 if (!capable(CAP_SYS_ADMIN))
323 if (XFS_FORCED_SHUTDOWN(mp))
326 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
330 xfs_ilock(ip, XFS_ILOCK_EXCL);
331 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
333 ip->i_d.di_dmevmask = evmask;
334 ip->i_d.di_dmstate = state;
336 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
337 error = xfs_trans_commit(tp);
343 xfs_fssetdm_by_handle(
344 struct file *parfilp,
348 struct fsdmidata fsd;
349 xfs_fsop_setdm_handlereq_t dmhreq;
350 struct dentry *dentry;
352 if (!capable(CAP_MKNOD))
354 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
357 error = mnt_want_write_file(parfilp);
361 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
362 if (IS_ERR(dentry)) {
363 mnt_drop_write_file(parfilp);
364 return PTR_ERR(dentry);
367 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
372 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
377 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
381 mnt_drop_write_file(parfilp);
387 xfs_attrlist_by_handle(
388 struct file *parfilp,
392 attrlist_cursor_kern_t *cursor;
393 struct xfs_fsop_attrlist_handlereq __user *p = arg;
394 xfs_fsop_attrlist_handlereq_t al_hreq;
395 struct dentry *dentry;
398 if (!capable(CAP_SYS_ADMIN))
400 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
402 if (al_hreq.buflen < sizeof(struct attrlist) ||
403 al_hreq.buflen > XFS_XATTR_LIST_MAX)
407 * Reject flags, only allow namespaces.
409 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
412 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
414 return PTR_ERR(dentry);
416 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
420 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
421 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
422 al_hreq.flags, cursor);
426 if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
431 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
442 xfs_attrmulti_attr_get(
445 unsigned char __user *ubuf,
452 if (*len > XFS_XATTR_SIZE_MAX)
454 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
458 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
462 if (copy_to_user(ubuf, kbuf, *len))
471 xfs_attrmulti_attr_set(
474 const unsigned char __user *ubuf,
481 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
483 if (len > XFS_XATTR_SIZE_MAX)
486 kbuf = memdup_user(ubuf, len);
488 return PTR_ERR(kbuf);
490 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
492 xfs_forget_acl(inode, name, flags);
498 xfs_attrmulti_attr_remove(
505 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
507 error = xfs_attr_remove(XFS_I(inode), name, flags);
509 xfs_forget_acl(inode, name, flags);
514 xfs_attrmulti_by_handle(
515 struct file *parfilp,
519 xfs_attr_multiop_t *ops;
520 xfs_fsop_attrmulti_handlereq_t am_hreq;
521 struct dentry *dentry;
522 unsigned int i, size;
523 unsigned char *attr_name;
525 if (!capable(CAP_SYS_ADMIN))
527 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
531 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
534 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
536 return PTR_ERR(dentry);
539 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
540 if (!size || size > 16 * PAGE_SIZE)
543 ops = memdup_user(am_hreq.ops, size);
545 error = PTR_ERR(ops);
550 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
555 for (i = 0; i < am_hreq.opcount; i++) {
556 ops[i].am_error = strncpy_from_user((char *)attr_name,
557 ops[i].am_attrname, MAXNAMELEN);
558 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
560 if (ops[i].am_error < 0)
563 switch (ops[i].am_opcode) {
565 ops[i].am_error = xfs_attrmulti_attr_get(
566 d_inode(dentry), attr_name,
567 ops[i].am_attrvalue, &ops[i].am_length,
571 ops[i].am_error = mnt_want_write_file(parfilp);
574 ops[i].am_error = xfs_attrmulti_attr_set(
575 d_inode(dentry), attr_name,
576 ops[i].am_attrvalue, ops[i].am_length,
578 mnt_drop_write_file(parfilp);
581 ops[i].am_error = mnt_want_write_file(parfilp);
584 ops[i].am_error = xfs_attrmulti_attr_remove(
585 d_inode(dentry), attr_name,
587 mnt_drop_write_file(parfilp);
590 ops[i].am_error = -EINVAL;
594 if (copy_to_user(am_hreq.ops, ops, size))
611 struct inode *inode = file_inode(filp);
612 struct xfs_inode *ip = XFS_I(inode);
614 enum xfs_prealloc_flags flags = 0;
615 uint iolock = XFS_IOLOCK_EXCL;
619 * Only allow the sys admin to reserve space unless
620 * unwritten extents are enabled.
622 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
623 !capable(CAP_SYS_ADMIN))
626 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
629 if (!(filp->f_mode & FMODE_WRITE))
632 if (!S_ISREG(inode->i_mode))
635 if (filp->f_flags & O_DSYNC)
636 flags |= XFS_PREALLOC_SYNC;
637 if (filp->f_mode & FMODE_NOCMTIME)
638 flags |= XFS_PREALLOC_INVISIBLE;
640 error = mnt_want_write_file(filp);
644 xfs_ilock(ip, iolock);
645 error = xfs_break_layouts(inode, &iolock);
649 xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
650 iolock |= XFS_MMAPLOCK_EXCL;
652 switch (bf->l_whence) {
656 bf->l_start += filp->f_pos;
659 bf->l_start += XFS_ISIZE(ip);
667 * length of <= 0 for resv/unresv/zero is invalid. length for
668 * alloc/free is ignored completely and we have no idea what userspace
669 * might have set it to, so set it to zero to allow range
673 case XFS_IOC_ZERO_RANGE:
675 case XFS_IOC_RESVSP64:
676 case XFS_IOC_UNRESVSP:
677 case XFS_IOC_UNRESVSP64:
678 if (bf->l_len <= 0) {
688 if (bf->l_start < 0 ||
689 bf->l_start > inode->i_sb->s_maxbytes ||
690 bf->l_start + bf->l_len < 0 ||
691 bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
697 case XFS_IOC_ZERO_RANGE:
698 flags |= XFS_PREALLOC_SET;
699 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
702 case XFS_IOC_RESVSP64:
703 flags |= XFS_PREALLOC_SET;
704 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
707 case XFS_IOC_UNRESVSP:
708 case XFS_IOC_UNRESVSP64:
709 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
711 case XFS_IOC_ALLOCSP:
712 case XFS_IOC_ALLOCSP64:
714 case XFS_IOC_FREESP64:
715 flags |= XFS_PREALLOC_CLEAR;
716 if (bf->l_start > XFS_ISIZE(ip)) {
717 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
718 bf->l_start - XFS_ISIZE(ip),
724 iattr.ia_valid = ATTR_SIZE;
725 iattr.ia_size = bf->l_start;
727 error = xfs_vn_setattr_size(file_dentry(filp), &iattr);
737 error = xfs_update_prealloc_flags(ip, flags);
740 xfs_iunlock(ip, iolock);
741 mnt_drop_write_file(filp);
751 xfs_fsop_bulkreq_t bulkreq;
752 int count; /* # of records returned */
753 xfs_ino_t inlast; /* last inode number */
757 /* done = 1 if there are more stats to get and if bulkstat */
758 /* should be called again (unused here, but used in dmapi) */
760 if (!capable(CAP_SYS_ADMIN))
763 if (XFS_FORCED_SHUTDOWN(mp))
766 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
769 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
772 if ((count = bulkreq.icount) <= 0)
775 if (bulkreq.ubuffer == NULL)
778 if (cmd == XFS_IOC_FSINUMBERS)
779 error = xfs_inumbers(mp, &inlast, &count,
780 bulkreq.ubuffer, xfs_inumbers_fmt);
781 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
782 error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer,
783 sizeof(xfs_bstat_t), NULL, &done);
784 else /* XFS_IOC_FSBULKSTAT */
785 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
786 sizeof(xfs_bstat_t), bulkreq.ubuffer,
792 if (bulkreq.ocount != NULL) {
793 if (copy_to_user(bulkreq.lastip, &inlast,
797 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
805 xfs_ioc_fsgeometry_v1(
809 xfs_fsop_geom_t fsgeo;
812 error = xfs_fs_geometry(mp, &fsgeo, 3);
817 * Caller should have passed an argument of type
818 * xfs_fsop_geom_v1_t. This is a proper subset of the
819 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
821 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
831 xfs_fsop_geom_t fsgeo;
834 error = xfs_fs_geometry(mp, &fsgeo, 4);
838 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
844 * Linux extended inode flags interface.
848 xfs_merge_ioc_xflags(
852 unsigned int xflags = start;
854 if (flags & FS_IMMUTABLE_FL)
855 xflags |= FS_XFLAG_IMMUTABLE;
857 xflags &= ~FS_XFLAG_IMMUTABLE;
858 if (flags & FS_APPEND_FL)
859 xflags |= FS_XFLAG_APPEND;
861 xflags &= ~FS_XFLAG_APPEND;
862 if (flags & FS_SYNC_FL)
863 xflags |= FS_XFLAG_SYNC;
865 xflags &= ~FS_XFLAG_SYNC;
866 if (flags & FS_NOATIME_FL)
867 xflags |= FS_XFLAG_NOATIME;
869 xflags &= ~FS_XFLAG_NOATIME;
870 if (flags & FS_NODUMP_FL)
871 xflags |= FS_XFLAG_NODUMP;
873 xflags &= ~FS_XFLAG_NODUMP;
882 unsigned int flags = 0;
884 if (di_flags & XFS_DIFLAG_IMMUTABLE)
885 flags |= FS_IMMUTABLE_FL;
886 if (di_flags & XFS_DIFLAG_APPEND)
887 flags |= FS_APPEND_FL;
888 if (di_flags & XFS_DIFLAG_SYNC)
890 if (di_flags & XFS_DIFLAG_NOATIME)
891 flags |= FS_NOATIME_FL;
892 if (di_flags & XFS_DIFLAG_NODUMP)
893 flags |= FS_NODUMP_FL;
905 memset(&fa, 0, sizeof(struct fsxattr));
907 xfs_ilock(ip, XFS_ILOCK_SHARED);
908 fa.fsx_xflags = xfs_ip2xflags(ip);
909 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
910 fa.fsx_cowextsize = ip->i_d.di_cowextsize <<
911 ip->i_mount->m_sb.sb_blocklog;
912 fa.fsx_projid = xfs_get_projid(ip);
916 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
917 fa.fsx_nextents = xfs_iext_count(ip->i_afp);
919 fa.fsx_nextents = ip->i_d.di_anextents;
923 if (ip->i_df.if_flags & XFS_IFEXTENTS)
924 fa.fsx_nextents = xfs_iext_count(&ip->i_df);
926 fa.fsx_nextents = ip->i_d.di_nextents;
928 xfs_iunlock(ip, XFS_ILOCK_SHARED);
930 if (copy_to_user(arg, &fa, sizeof(fa)))
937 struct xfs_inode *ip,
940 /* can't set PREALLOC this way, just preserve it */
942 (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
944 if (xflags & FS_XFLAG_IMMUTABLE)
945 di_flags |= XFS_DIFLAG_IMMUTABLE;
946 if (xflags & FS_XFLAG_APPEND)
947 di_flags |= XFS_DIFLAG_APPEND;
948 if (xflags & FS_XFLAG_SYNC)
949 di_flags |= XFS_DIFLAG_SYNC;
950 if (xflags & FS_XFLAG_NOATIME)
951 di_flags |= XFS_DIFLAG_NOATIME;
952 if (xflags & FS_XFLAG_NODUMP)
953 di_flags |= XFS_DIFLAG_NODUMP;
954 if (xflags & FS_XFLAG_NODEFRAG)
955 di_flags |= XFS_DIFLAG_NODEFRAG;
956 if (xflags & FS_XFLAG_FILESTREAM)
957 di_flags |= XFS_DIFLAG_FILESTREAM;
958 if (S_ISDIR(VFS_I(ip)->i_mode)) {
959 if (xflags & FS_XFLAG_RTINHERIT)
960 di_flags |= XFS_DIFLAG_RTINHERIT;
961 if (xflags & FS_XFLAG_NOSYMLINKS)
962 di_flags |= XFS_DIFLAG_NOSYMLINKS;
963 if (xflags & FS_XFLAG_EXTSZINHERIT)
964 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
965 if (xflags & FS_XFLAG_PROJINHERIT)
966 di_flags |= XFS_DIFLAG_PROJINHERIT;
967 } else if (S_ISREG(VFS_I(ip)->i_mode)) {
968 if (xflags & FS_XFLAG_REALTIME)
969 di_flags |= XFS_DIFLAG_REALTIME;
970 if (xflags & FS_XFLAG_EXTSIZE)
971 di_flags |= XFS_DIFLAG_EXTSIZE;
979 struct xfs_inode *ip,
983 (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
985 if (xflags & FS_XFLAG_DAX)
986 di_flags2 |= XFS_DIFLAG2_DAX;
987 if (xflags & FS_XFLAG_COWEXTSIZE)
988 di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
994 xfs_diflags_to_linux(
995 struct xfs_inode *ip)
997 struct inode *inode = VFS_I(ip);
998 unsigned int xflags = xfs_ip2xflags(ip);
1000 if (xflags & FS_XFLAG_IMMUTABLE)
1001 inode->i_flags |= S_IMMUTABLE;
1003 inode->i_flags &= ~S_IMMUTABLE;
1004 if (xflags & FS_XFLAG_APPEND)
1005 inode->i_flags |= S_APPEND;
1007 inode->i_flags &= ~S_APPEND;
1008 if (xflags & FS_XFLAG_SYNC)
1009 inode->i_flags |= S_SYNC;
1011 inode->i_flags &= ~S_SYNC;
1012 if (xflags & FS_XFLAG_NOATIME)
1013 inode->i_flags |= S_NOATIME;
1015 inode->i_flags &= ~S_NOATIME;
1016 #if 0 /* disabled until the flag switching races are sorted out */
1017 if (xflags & FS_XFLAG_DAX)
1018 inode->i_flags |= S_DAX;
1020 inode->i_flags &= ~S_DAX;
1025 xfs_ioctl_setattr_xflags(
1026 struct xfs_trans *tp,
1027 struct xfs_inode *ip,
1030 struct xfs_mount *mp = ip->i_mount;
1033 /* Can't change realtime flag if any extents are allocated. */
1034 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1035 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1038 /* If realtime flag is set then must have realtime device */
1039 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1040 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1041 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
1045 /* Clear reflink if we are actually able to set the rt flag. */
1046 if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
1047 ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
1049 /* Don't allow us to set DAX mode for a reflinked file for now. */
1050 if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
1054 * Can't modify an immutable/append-only file unless
1055 * we have appropriate permission.
1057 if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
1058 (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
1059 !capable(CAP_LINUX_IMMUTABLE))
1062 /* diflags2 only valid for v3 inodes. */
1063 di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
1064 if (di_flags2 && ip->i_d.di_version < 3)
1067 ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags);
1068 ip->i_d.di_flags2 = di_flags2;
1070 xfs_diflags_to_linux(ip);
1071 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1072 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1073 XFS_STATS_INC(mp, xs_ig_attrchg);
1078 * If we are changing DAX flags, we have to ensure the file is clean and any
1079 * cached objects in the address space are invalidated and removed. This
1080 * requires us to lock out other IO and page faults similar to a truncate
1081 * operation. The locks need to be held until the transaction has been committed
1082 * so that the cache invalidation is atomic with respect to the DAX flag
1086 xfs_ioctl_setattr_dax_invalidate(
1087 struct xfs_inode *ip,
1091 struct inode *inode = VFS_I(ip);
1092 struct super_block *sb = inode->i_sb;
1098 * It is only valid to set the DAX flag on regular files and
1099 * directories on filesystems where the block size is equal to the page
1100 * size. On directories it serves as an inherit hint.
1102 if (fa->fsx_xflags & FS_XFLAG_DAX) {
1103 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
1105 if (!bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)),
1110 /* If the DAX state is not changing, we have nothing to do here. */
1111 if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
1113 if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
1116 /* lock, flush and invalidate mapping in preparation for flag change */
1117 xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1118 error = filemap_write_and_wait(inode->i_mapping);
1121 error = invalidate_inode_pages2(inode->i_mapping);
1125 *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
1129 xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1135 * Set up the transaction structure for the setattr operation, checking that we
1136 * have permission to do so. On success, return a clean transaction and the
1137 * inode locked exclusively ready for further operation specific checks. On
1138 * failure, return an error without modifying or locking the inode.
1140 * The inode might already be IO locked on call. If this is the case, it is
1141 * indicated in @join_flags and we take full responsibility for ensuring they
1142 * are unlocked from now on. Hence if we have an error here, we still have to
1143 * unlock them. Otherwise, once they are joined to the transaction, they will
1144 * be unlocked on commit/cancel.
1146 static struct xfs_trans *
1147 xfs_ioctl_setattr_get_trans(
1148 struct xfs_inode *ip,
1151 struct xfs_mount *mp = ip->i_mount;
1152 struct xfs_trans *tp;
1155 if (mp->m_flags & XFS_MOUNT_RDONLY)
1158 if (XFS_FORCED_SHUTDOWN(mp))
1161 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1163 return ERR_PTR(error);
1165 xfs_ilock(ip, XFS_ILOCK_EXCL);
1166 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
1170 * CAP_FOWNER overrides the following restrictions:
1172 * The user ID of the calling process must be equal to the file owner
1173 * ID, except in cases where the CAP_FSETID capability is applicable.
1175 if (!inode_owner_or_capable(VFS_I(ip))) {
1180 if (mp->m_flags & XFS_MOUNT_WSYNC)
1181 xfs_trans_set_sync(tp);
1186 xfs_trans_cancel(tp);
1189 xfs_iunlock(ip, join_flags);
1190 return ERR_PTR(error);
1194 * extent size hint validation is somewhat cumbersome. Rules are:
1196 * 1. extent size hint is only valid for directories and regular files
1197 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1198 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1199 * 4. can only be changed on regular files if no extents are allocated
1200 * 5. can be changed on directories at any time
1201 * 6. extsize hint of 0 turns off hints, clears inode flags.
1202 * 7. Extent size must be a multiple of the appropriate block size.
1203 * 8. for non-realtime files, the extent size hint must be limited
1204 * to half the AG size to avoid alignment extending the extent beyond the
1208 xfs_ioctl_setattr_check_extsize(
1209 struct xfs_inode *ip,
1212 struct xfs_mount *mp = ip->i_mount;
1214 if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
1217 if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
1218 !S_ISDIR(VFS_I(ip)->i_mode))
1221 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
1222 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
1225 if (fa->fsx_extsize != 0) {
1227 xfs_fsblock_t extsize_fsb;
1229 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1230 if (extsize_fsb > MAXEXTLEN)
1233 if (XFS_IS_REALTIME_INODE(ip) ||
1234 (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
1235 size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
1237 size = mp->m_sb.sb_blocksize;
1238 if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
1242 if (fa->fsx_extsize % size)
1245 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
1251 * CoW extent size hint validation rules are:
1253 * 1. CoW extent size hint can only be set if reflink is enabled on the fs.
1254 * The inode does not have to have any shared blocks, but it must be a v3.
1255 * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
1256 * for a directory, the hint is propagated to new files.
1257 * 3. Can be changed on files & directories at any time.
1258 * 4. CoW extsize hint of 0 turns off hints, clears inode flags.
1259 * 5. Extent size must be a multiple of the appropriate block size.
1260 * 6. The extent size hint must be limited to half the AG size to avoid
1261 * alignment extending the extent beyond the limits of the AG.
1264 xfs_ioctl_setattr_check_cowextsize(
1265 struct xfs_inode *ip,
1268 struct xfs_mount *mp = ip->i_mount;
1270 if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
1273 if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) ||
1274 ip->i_d.di_version != 3)
1277 if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
1280 if (fa->fsx_cowextsize != 0) {
1282 xfs_fsblock_t cowextsize_fsb;
1284 cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
1285 if (cowextsize_fsb > MAXEXTLEN)
1288 size = mp->m_sb.sb_blocksize;
1289 if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
1292 if (fa->fsx_cowextsize % size)
1295 fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
1301 xfs_ioctl_setattr_check_projid(
1302 struct xfs_inode *ip,
1305 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1306 if (fa->fsx_projid > (uint16_t)-1 &&
1307 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1311 * Project Quota ID state is only allowed to change from within the init
1312 * namespace. Enforce that restriction only if we are trying to change
1313 * the quota ID state. Everything else is allowed in user namespaces.
1315 if (current_user_ns() == &init_user_ns)
1318 if (xfs_get_projid(ip) != fa->fsx_projid)
1320 if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
1321 (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
1332 struct xfs_mount *mp = ip->i_mount;
1333 struct xfs_trans *tp;
1334 struct xfs_dquot *udqp = NULL;
1335 struct xfs_dquot *pdqp = NULL;
1336 struct xfs_dquot *olddquot = NULL;
1340 trace_xfs_ioctl_setattr(ip);
1342 code = xfs_ioctl_setattr_check_projid(ip, fa);
1347 * If disk quotas is on, we make sure that the dquots do exist on disk,
1348 * before we start any other transactions. Trying to do this later
1349 * is messy. We don't care to take a readlock to look at the ids
1350 * in inode here, because we can't hold it across the trans_reserve.
1351 * If the IDs do change before we take the ilock, we're covered
1352 * because the i_*dquot fields will get updated anyway.
1354 if (XFS_IS_QUOTA_ON(mp)) {
1355 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1356 ip->i_d.di_gid, fa->fsx_projid,
1357 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1363 * Changing DAX config may require inode locking for mapping
1364 * invalidation. These need to be held all the way to transaction commit
1365 * or cancel time, so need to be passed through to
1366 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1369 code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
1371 goto error_free_dquots;
1373 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1376 goto error_free_dquots;
1380 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
1381 xfs_get_projid(ip) != fa->fsx_projid) {
1382 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
1383 capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
1384 if (code) /* out of quota */
1385 goto error_trans_cancel;
1388 code = xfs_ioctl_setattr_check_extsize(ip, fa);
1390 goto error_trans_cancel;
1392 code = xfs_ioctl_setattr_check_cowextsize(ip, fa);
1394 goto error_trans_cancel;
1396 code = xfs_ioctl_setattr_xflags(tp, ip, fa);
1398 goto error_trans_cancel;
1401 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1402 * overrides the following restrictions:
1404 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1405 * successful return from chown()
1408 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1409 !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
1410 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1412 /* Change the ownerships and register project quota modifications */
1413 if (xfs_get_projid(ip) != fa->fsx_projid) {
1414 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1415 olddquot = xfs_qm_vop_chown(tp, ip,
1416 &ip->i_pdquot, pdqp);
1418 ASSERT(ip->i_d.di_version > 1);
1419 xfs_set_projid(ip, fa->fsx_projid);
1423 * Only set the extent size hint if we've already determined that the
1424 * extent size hint should be set on the inode. If no extent size flags
1425 * are set on the inode then unconditionally clear the extent size hint.
1427 if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1428 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1430 ip->i_d.di_extsize = 0;
1431 if (ip->i_d.di_version == 3 &&
1432 (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
1433 ip->i_d.di_cowextsize = fa->fsx_cowextsize >>
1434 mp->m_sb.sb_blocklog;
1436 ip->i_d.di_cowextsize = 0;
1438 code = xfs_trans_commit(tp);
1441 * Release any dquot(s) the inode had kept before chown.
1443 xfs_qm_dqrele(olddquot);
1444 xfs_qm_dqrele(udqp);
1445 xfs_qm_dqrele(pdqp);
1450 xfs_trans_cancel(tp);
1452 xfs_qm_dqrele(udqp);
1453 xfs_qm_dqrele(pdqp);
1466 if (copy_from_user(&fa, arg, sizeof(fa)))
1469 error = mnt_want_write_file(filp);
1472 error = xfs_ioctl_setattr(ip, &fa);
1473 mnt_drop_write_file(filp);
1484 flags = xfs_di2lxflags(ip->i_d.di_flags);
1485 if (copy_to_user(arg, &flags, sizeof(flags)))
1492 struct xfs_inode *ip,
1496 struct xfs_trans *tp;
1502 if (copy_from_user(&flags, arg, sizeof(flags)))
1505 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1506 FS_NOATIME_FL | FS_NODUMP_FL | \
1510 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1512 error = mnt_want_write_file(filp);
1517 * Changing DAX config may require inode locking for mapping
1518 * invalidation. These need to be held all the way to transaction commit
1519 * or cancel time, so need to be passed through to
1520 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1523 error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
1525 goto out_drop_write;
1527 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1529 error = PTR_ERR(tp);
1530 goto out_drop_write;
1533 error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
1535 xfs_trans_cancel(tp);
1536 goto out_drop_write;
1539 error = xfs_trans_commit(tp);
1541 mnt_drop_write_file(filp);
1546 xfs_getbmap_format(void **ap, struct getbmapx *bmv)
1548 struct getbmap __user *base = (struct getbmap __user *)*ap;
1550 /* copy only getbmap portion (not getbmapx) */
1551 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1554 *ap += sizeof(struct getbmap);
1564 struct getbmapx bmx = { 0 };
1567 /* struct getbmap is a strict subset of struct getbmapx. */
1568 if (copy_from_user(&bmx, arg, offsetof(struct getbmapx, bmv_iflags)))
1571 if (bmx.bmv_count < 2)
1574 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1575 if (file->f_mode & FMODE_NOCMTIME)
1576 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1578 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
1579 (__force struct getbmap *)arg+1);
1583 /* copy back header - only size of getbmap */
1584 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1590 xfs_getbmapx_format(void **ap, struct getbmapx *bmv)
1592 struct getbmapx __user *base = (struct getbmapx __user *)*ap;
1594 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1597 *ap += sizeof(struct getbmapx);
1603 struct xfs_inode *ip,
1606 struct getbmapx bmx;
1609 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1612 if (bmx.bmv_count < 2)
1615 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1618 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1619 (__force struct getbmapx *)arg+1);
1623 /* copy back header */
1624 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1630 struct getfsmap_info {
1631 struct xfs_mount *mp;
1632 struct fsmap_head __user *data;
1638 xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv)
1640 struct getfsmap_info *info = priv;
1643 trace_xfs_getfsmap_mapping(info->mp, xfm);
1645 info->last_flags = xfm->fmr_flags;
1646 xfs_fsmap_from_internal(&fm, xfm);
1647 if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm,
1648 sizeof(struct fsmap)))
1656 struct xfs_inode *ip,
1657 struct fsmap_head __user *arg)
1659 struct getfsmap_info info = { NULL };
1660 struct xfs_fsmap_head xhead = {0};
1661 struct fsmap_head head;
1662 bool aborted = false;
1665 if (copy_from_user(&head, arg, sizeof(struct fsmap_head)))
1667 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
1668 memchr_inv(head.fmh_keys[0].fmr_reserved, 0,
1669 sizeof(head.fmh_keys[0].fmr_reserved)) ||
1670 memchr_inv(head.fmh_keys[1].fmr_reserved, 0,
1671 sizeof(head.fmh_keys[1].fmr_reserved)))
1674 xhead.fmh_iflags = head.fmh_iflags;
1675 xhead.fmh_count = head.fmh_count;
1676 xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]);
1677 xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]);
1679 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]);
1680 trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]);
1682 info.mp = ip->i_mount;
1684 error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info);
1685 if (error == XFS_BTREE_QUERY_RANGE_ABORT) {
1691 /* If we didn't abort, set the "last" flag in the last fmx */
1692 if (!aborted && info.idx) {
1693 info.last_flags |= FMR_OF_LAST;
1694 if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags,
1695 &info.last_flags, sizeof(info.last_flags)))
1699 /* copy back header */
1700 head.fmh_entries = xhead.fmh_entries;
1701 head.fmh_oflags = xhead.fmh_oflags;
1702 if (copy_to_user(arg, &head, sizeof(struct fsmap_head)))
1712 xfs_inode_t *ip, *tip;
1716 /* Pull information for the target fd */
1717 f = fdget((int)sxp->sx_fdtarget);
1723 if (!(f.file->f_mode & FMODE_WRITE) ||
1724 !(f.file->f_mode & FMODE_READ) ||
1725 (f.file->f_flags & O_APPEND)) {
1730 tmp = fdget((int)sxp->sx_fdtmp);
1736 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1737 !(tmp.file->f_mode & FMODE_READ) ||
1738 (tmp.file->f_flags & O_APPEND)) {
1740 goto out_put_tmp_file;
1743 if (IS_SWAPFILE(file_inode(f.file)) ||
1744 IS_SWAPFILE(file_inode(tmp.file))) {
1746 goto out_put_tmp_file;
1750 * We need to ensure that the fds passed in point to XFS inodes
1751 * before we cast and access them as XFS structures as we have no
1752 * control over what the user passes us here.
1754 if (f.file->f_op != &xfs_file_operations ||
1755 tmp.file->f_op != &xfs_file_operations) {
1757 goto out_put_tmp_file;
1760 ip = XFS_I(file_inode(f.file));
1761 tip = XFS_I(file_inode(tmp.file));
1763 if (ip->i_mount != tip->i_mount) {
1765 goto out_put_tmp_file;
1768 if (ip->i_ino == tip->i_ino) {
1770 goto out_put_tmp_file;
1773 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1775 goto out_put_tmp_file;
1778 error = xfs_swap_extents(ip, tip, sxp);
1789 * Note: some of the ioctl's return positive numbers as a
1790 * byte count indicating success, such as readlink_by_handle.
1791 * So we don't "sign flip" like most other routines. This means
1792 * true errors need to be returned as a negative value.
1800 struct inode *inode = file_inode(filp);
1801 struct xfs_inode *ip = XFS_I(inode);
1802 struct xfs_mount *mp = ip->i_mount;
1803 void __user *arg = (void __user *)p;
1806 trace_xfs_file_ioctl(ip);
1810 return xfs_ioc_trim(mp, arg);
1811 case XFS_IOC_ALLOCSP:
1812 case XFS_IOC_FREESP:
1813 case XFS_IOC_RESVSP:
1814 case XFS_IOC_UNRESVSP:
1815 case XFS_IOC_ALLOCSP64:
1816 case XFS_IOC_FREESP64:
1817 case XFS_IOC_RESVSP64:
1818 case XFS_IOC_UNRESVSP64:
1819 case XFS_IOC_ZERO_RANGE: {
1822 if (copy_from_user(&bf, arg, sizeof(bf)))
1824 return xfs_ioc_space(filp, cmd, &bf);
1826 case XFS_IOC_DIOINFO: {
1828 xfs_buftarg_t *target =
1829 XFS_IS_REALTIME_INODE(ip) ?
1830 mp->m_rtdev_targp : mp->m_ddev_targp;
1832 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1833 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1835 if (copy_to_user(arg, &da, sizeof(da)))
1840 case XFS_IOC_FSBULKSTAT_SINGLE:
1841 case XFS_IOC_FSBULKSTAT:
1842 case XFS_IOC_FSINUMBERS:
1843 return xfs_ioc_bulkstat(mp, cmd, arg);
1845 case XFS_IOC_FSGEOMETRY_V1:
1846 return xfs_ioc_fsgeometry_v1(mp, arg);
1848 case XFS_IOC_FSGEOMETRY:
1849 return xfs_ioc_fsgeometry(mp, arg);
1851 case XFS_IOC_GETVERSION:
1852 return put_user(inode->i_generation, (int __user *)arg);
1854 case XFS_IOC_FSGETXATTR:
1855 return xfs_ioc_fsgetxattr(ip, 0, arg);
1856 case XFS_IOC_FSGETXATTRA:
1857 return xfs_ioc_fsgetxattr(ip, 1, arg);
1858 case XFS_IOC_FSSETXATTR:
1859 return xfs_ioc_fssetxattr(ip, filp, arg);
1860 case XFS_IOC_GETXFLAGS:
1861 return xfs_ioc_getxflags(ip, arg);
1862 case XFS_IOC_SETXFLAGS:
1863 return xfs_ioc_setxflags(ip, filp, arg);
1865 case XFS_IOC_FSSETDM: {
1866 struct fsdmidata dmi;
1868 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1871 error = mnt_want_write_file(filp);
1875 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1877 mnt_drop_write_file(filp);
1881 case XFS_IOC_GETBMAP:
1882 case XFS_IOC_GETBMAPA:
1883 return xfs_ioc_getbmap(filp, cmd, arg);
1885 case XFS_IOC_GETBMAPX:
1886 return xfs_ioc_getbmapx(ip, arg);
1888 case FS_IOC_GETFSMAP:
1889 return xfs_ioc_getfsmap(ip, arg);
1891 case XFS_IOC_FD_TO_HANDLE:
1892 case XFS_IOC_PATH_TO_HANDLE:
1893 case XFS_IOC_PATH_TO_FSHANDLE: {
1894 xfs_fsop_handlereq_t hreq;
1896 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1898 return xfs_find_handle(cmd, &hreq);
1900 case XFS_IOC_OPEN_BY_HANDLE: {
1901 xfs_fsop_handlereq_t hreq;
1903 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1905 return xfs_open_by_handle(filp, &hreq);
1907 case XFS_IOC_FSSETDM_BY_HANDLE:
1908 return xfs_fssetdm_by_handle(filp, arg);
1910 case XFS_IOC_READLINK_BY_HANDLE: {
1911 xfs_fsop_handlereq_t hreq;
1913 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1915 return xfs_readlink_by_handle(filp, &hreq);
1917 case XFS_IOC_ATTRLIST_BY_HANDLE:
1918 return xfs_attrlist_by_handle(filp, arg);
1920 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1921 return xfs_attrmulti_by_handle(filp, arg);
1923 case XFS_IOC_SWAPEXT: {
1924 struct xfs_swapext sxp;
1926 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1928 error = mnt_want_write_file(filp);
1931 error = xfs_ioc_swapext(&sxp);
1932 mnt_drop_write_file(filp);
1936 case XFS_IOC_FSCOUNTS: {
1937 xfs_fsop_counts_t out;
1939 error = xfs_fs_counts(mp, &out);
1943 if (copy_to_user(arg, &out, sizeof(out)))
1948 case XFS_IOC_SET_RESBLKS: {
1949 xfs_fsop_resblks_t inout;
1952 if (!capable(CAP_SYS_ADMIN))
1955 if (mp->m_flags & XFS_MOUNT_RDONLY)
1958 if (copy_from_user(&inout, arg, sizeof(inout)))
1961 error = mnt_want_write_file(filp);
1965 /* input parameter is passed in resblks field of structure */
1967 error = xfs_reserve_blocks(mp, &in, &inout);
1968 mnt_drop_write_file(filp);
1972 if (copy_to_user(arg, &inout, sizeof(inout)))
1977 case XFS_IOC_GET_RESBLKS: {
1978 xfs_fsop_resblks_t out;
1980 if (!capable(CAP_SYS_ADMIN))
1983 error = xfs_reserve_blocks(mp, NULL, &out);
1987 if (copy_to_user(arg, &out, sizeof(out)))
1993 case XFS_IOC_FSGROWFSDATA: {
1994 xfs_growfs_data_t in;
1996 if (copy_from_user(&in, arg, sizeof(in)))
1999 error = mnt_want_write_file(filp);
2002 error = xfs_growfs_data(mp, &in);
2003 mnt_drop_write_file(filp);
2007 case XFS_IOC_FSGROWFSLOG: {
2008 xfs_growfs_log_t in;
2010 if (copy_from_user(&in, arg, sizeof(in)))
2013 error = mnt_want_write_file(filp);
2016 error = xfs_growfs_log(mp, &in);
2017 mnt_drop_write_file(filp);
2021 case XFS_IOC_FSGROWFSRT: {
2024 if (copy_from_user(&in, arg, sizeof(in)))
2027 error = mnt_want_write_file(filp);
2030 error = xfs_growfs_rt(mp, &in);
2031 mnt_drop_write_file(filp);
2035 case XFS_IOC_GOINGDOWN: {
2038 if (!capable(CAP_SYS_ADMIN))
2041 if (get_user(in, (uint32_t __user *)arg))
2044 return xfs_fs_goingdown(mp, in);
2047 case XFS_IOC_ERROR_INJECTION: {
2048 xfs_error_injection_t in;
2050 if (!capable(CAP_SYS_ADMIN))
2053 if (copy_from_user(&in, arg, sizeof(in)))
2056 return xfs_errortag_add(mp, in.errtag);
2059 case XFS_IOC_ERROR_CLEARALL:
2060 if (!capable(CAP_SYS_ADMIN))
2063 return xfs_errortag_clearall(mp);
2065 case XFS_IOC_FREE_EOFBLOCKS: {
2066 struct xfs_fs_eofblocks eofb;
2067 struct xfs_eofblocks keofb;
2069 if (!capable(CAP_SYS_ADMIN))
2072 if (mp->m_flags & XFS_MOUNT_RDONLY)
2075 if (copy_from_user(&eofb, arg, sizeof(eofb)))
2078 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
2082 return xfs_icache_free_eofblocks(mp, &keofb);