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), 0);
723 iattr.ia_valid = ATTR_SIZE;
724 iattr.ia_size = bf->l_start;
726 error = xfs_vn_setattr_size(file_dentry(filp), &iattr);
736 error = xfs_update_prealloc_flags(ip, flags);
739 xfs_iunlock(ip, iolock);
740 mnt_drop_write_file(filp);
750 xfs_fsop_bulkreq_t bulkreq;
751 int count; /* # of records returned */
752 xfs_ino_t inlast; /* last inode number */
756 /* done = 1 if there are more stats to get and if bulkstat */
757 /* should be called again (unused here, but used in dmapi) */
759 if (!capable(CAP_SYS_ADMIN))
762 if (XFS_FORCED_SHUTDOWN(mp))
765 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
768 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
771 if ((count = bulkreq.icount) <= 0)
774 if (bulkreq.ubuffer == NULL)
777 if (cmd == XFS_IOC_FSINUMBERS)
778 error = xfs_inumbers(mp, &inlast, &count,
779 bulkreq.ubuffer, xfs_inumbers_fmt);
780 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
781 error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer,
782 sizeof(xfs_bstat_t), NULL, &done);
783 else /* XFS_IOC_FSBULKSTAT */
784 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
785 sizeof(xfs_bstat_t), bulkreq.ubuffer,
791 if (bulkreq.ocount != NULL) {
792 if (copy_to_user(bulkreq.lastip, &inlast,
796 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
804 xfs_ioc_fsgeometry_v1(
808 xfs_fsop_geom_t fsgeo;
811 error = xfs_fs_geometry(mp, &fsgeo, 3);
816 * Caller should have passed an argument of type
817 * xfs_fsop_geom_v1_t. This is a proper subset of the
818 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
820 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
830 xfs_fsop_geom_t fsgeo;
833 error = xfs_fs_geometry(mp, &fsgeo, 4);
837 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
843 * Linux extended inode flags interface.
847 xfs_merge_ioc_xflags(
851 unsigned int xflags = start;
853 if (flags & FS_IMMUTABLE_FL)
854 xflags |= FS_XFLAG_IMMUTABLE;
856 xflags &= ~FS_XFLAG_IMMUTABLE;
857 if (flags & FS_APPEND_FL)
858 xflags |= FS_XFLAG_APPEND;
860 xflags &= ~FS_XFLAG_APPEND;
861 if (flags & FS_SYNC_FL)
862 xflags |= FS_XFLAG_SYNC;
864 xflags &= ~FS_XFLAG_SYNC;
865 if (flags & FS_NOATIME_FL)
866 xflags |= FS_XFLAG_NOATIME;
868 xflags &= ~FS_XFLAG_NOATIME;
869 if (flags & FS_NODUMP_FL)
870 xflags |= FS_XFLAG_NODUMP;
872 xflags &= ~FS_XFLAG_NODUMP;
881 unsigned int flags = 0;
883 if (di_flags & XFS_DIFLAG_IMMUTABLE)
884 flags |= FS_IMMUTABLE_FL;
885 if (di_flags & XFS_DIFLAG_APPEND)
886 flags |= FS_APPEND_FL;
887 if (di_flags & XFS_DIFLAG_SYNC)
889 if (di_flags & XFS_DIFLAG_NOATIME)
890 flags |= FS_NOATIME_FL;
891 if (di_flags & XFS_DIFLAG_NODUMP)
892 flags |= FS_NODUMP_FL;
904 memset(&fa, 0, sizeof(struct fsxattr));
906 xfs_ilock(ip, XFS_ILOCK_SHARED);
907 fa.fsx_xflags = xfs_ip2xflags(ip);
908 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
909 fa.fsx_cowextsize = ip->i_d.di_cowextsize <<
910 ip->i_mount->m_sb.sb_blocklog;
911 fa.fsx_projid = xfs_get_projid(ip);
915 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
916 fa.fsx_nextents = xfs_iext_count(ip->i_afp);
918 fa.fsx_nextents = ip->i_d.di_anextents;
922 if (ip->i_df.if_flags & XFS_IFEXTENTS)
923 fa.fsx_nextents = xfs_iext_count(&ip->i_df);
925 fa.fsx_nextents = ip->i_d.di_nextents;
927 xfs_iunlock(ip, XFS_ILOCK_SHARED);
929 if (copy_to_user(arg, &fa, sizeof(fa)))
936 struct xfs_inode *ip,
939 unsigned int di_flags;
942 /* can't set PREALLOC this way, just preserve it */
943 di_flags = (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;
973 ip->i_d.di_flags = di_flags;
975 /* diflags2 only valid for v3 inodes. */
976 if (ip->i_d.di_version < 3)
979 di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
980 if (xflags & FS_XFLAG_DAX)
981 di_flags2 |= XFS_DIFLAG2_DAX;
982 if (xflags & FS_XFLAG_COWEXTSIZE)
983 di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
985 ip->i_d.di_flags2 = di_flags2;
989 xfs_diflags_to_linux(
990 struct xfs_inode *ip)
992 struct inode *inode = VFS_I(ip);
993 unsigned int xflags = xfs_ip2xflags(ip);
995 if (xflags & FS_XFLAG_IMMUTABLE)
996 inode->i_flags |= S_IMMUTABLE;
998 inode->i_flags &= ~S_IMMUTABLE;
999 if (xflags & FS_XFLAG_APPEND)
1000 inode->i_flags |= S_APPEND;
1002 inode->i_flags &= ~S_APPEND;
1003 if (xflags & FS_XFLAG_SYNC)
1004 inode->i_flags |= S_SYNC;
1006 inode->i_flags &= ~S_SYNC;
1007 if (xflags & FS_XFLAG_NOATIME)
1008 inode->i_flags |= S_NOATIME;
1010 inode->i_flags &= ~S_NOATIME;
1011 if (xflags & FS_XFLAG_DAX)
1012 inode->i_flags |= S_DAX;
1014 inode->i_flags &= ~S_DAX;
1019 xfs_ioctl_setattr_xflags(
1020 struct xfs_trans *tp,
1021 struct xfs_inode *ip,
1024 struct xfs_mount *mp = ip->i_mount;
1026 /* Can't change realtime flag if any extents are allocated. */
1027 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1028 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1031 /* If realtime flag is set then must have realtime device */
1032 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1033 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1034 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
1038 /* Clear reflink if we are actually able to set the rt flag. */
1039 if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
1040 ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
1042 /* Don't allow us to set DAX mode for a reflinked file for now. */
1043 if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
1047 * Can't modify an immutable/append-only file unless
1048 * we have appropriate permission.
1050 if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
1051 (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
1052 !capable(CAP_LINUX_IMMUTABLE))
1055 xfs_set_diflags(ip, fa->fsx_xflags);
1056 xfs_diflags_to_linux(ip);
1057 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1058 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1059 XFS_STATS_INC(mp, xs_ig_attrchg);
1064 * If we are changing DAX flags, we have to ensure the file is clean and any
1065 * cached objects in the address space are invalidated and removed. This
1066 * requires us to lock out other IO and page faults similar to a truncate
1067 * operation. The locks need to be held until the transaction has been committed
1068 * so that the cache invalidation is atomic with respect to the DAX flag
1072 xfs_ioctl_setattr_dax_invalidate(
1073 struct xfs_inode *ip,
1077 struct inode *inode = VFS_I(ip);
1083 * It is only valid to set the DAX flag on regular files and
1084 * directories on filesystems where the block size is equal to the page
1085 * size. On directories it serves as an inherit hint.
1087 if (fa->fsx_xflags & FS_XFLAG_DAX) {
1088 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
1090 if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE)
1094 /* If the DAX state is not changing, we have nothing to do here. */
1095 if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
1097 if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
1100 /* lock, flush and invalidate mapping in preparation for flag change */
1101 xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1102 error = filemap_write_and_wait(inode->i_mapping);
1105 error = invalidate_inode_pages2(inode->i_mapping);
1109 *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
1113 xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1119 * Set up the transaction structure for the setattr operation, checking that we
1120 * have permission to do so. On success, return a clean transaction and the
1121 * inode locked exclusively ready for further operation specific checks. On
1122 * failure, return an error without modifying or locking the inode.
1124 * The inode might already be IO locked on call. If this is the case, it is
1125 * indicated in @join_flags and we take full responsibility for ensuring they
1126 * are unlocked from now on. Hence if we have an error here, we still have to
1127 * unlock them. Otherwise, once they are joined to the transaction, they will
1128 * be unlocked on commit/cancel.
1130 static struct xfs_trans *
1131 xfs_ioctl_setattr_get_trans(
1132 struct xfs_inode *ip,
1135 struct xfs_mount *mp = ip->i_mount;
1136 struct xfs_trans *tp;
1139 if (mp->m_flags & XFS_MOUNT_RDONLY)
1142 if (XFS_FORCED_SHUTDOWN(mp))
1145 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1147 return ERR_PTR(error);
1149 xfs_ilock(ip, XFS_ILOCK_EXCL);
1150 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
1154 * CAP_FOWNER overrides the following restrictions:
1156 * The user ID of the calling process must be equal to the file owner
1157 * ID, except in cases where the CAP_FSETID capability is applicable.
1159 if (!inode_owner_or_capable(VFS_I(ip))) {
1164 if (mp->m_flags & XFS_MOUNT_WSYNC)
1165 xfs_trans_set_sync(tp);
1170 xfs_trans_cancel(tp);
1173 xfs_iunlock(ip, join_flags);
1174 return ERR_PTR(error);
1178 * extent size hint validation is somewhat cumbersome. Rules are:
1180 * 1. extent size hint is only valid for directories and regular files
1181 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1182 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1183 * 4. can only be changed on regular files if no extents are allocated
1184 * 5. can be changed on directories at any time
1185 * 6. extsize hint of 0 turns off hints, clears inode flags.
1186 * 7. Extent size must be a multiple of the appropriate block size.
1187 * 8. for non-realtime files, the extent size hint must be limited
1188 * to half the AG size to avoid alignment extending the extent beyond the
1192 xfs_ioctl_setattr_check_extsize(
1193 struct xfs_inode *ip,
1196 struct xfs_mount *mp = ip->i_mount;
1198 if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
1201 if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
1202 !S_ISDIR(VFS_I(ip)->i_mode))
1205 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
1206 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
1209 if (fa->fsx_extsize != 0) {
1211 xfs_fsblock_t extsize_fsb;
1213 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1214 if (extsize_fsb > MAXEXTLEN)
1217 if (XFS_IS_REALTIME_INODE(ip) ||
1218 (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
1219 size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
1221 size = mp->m_sb.sb_blocksize;
1222 if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
1226 if (fa->fsx_extsize % size)
1229 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
1235 * CoW extent size hint validation rules are:
1237 * 1. CoW extent size hint can only be set if reflink is enabled on the fs.
1238 * The inode does not have to have any shared blocks, but it must be a v3.
1239 * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
1240 * for a directory, the hint is propagated to new files.
1241 * 3. Can be changed on files & directories at any time.
1242 * 4. CoW extsize hint of 0 turns off hints, clears inode flags.
1243 * 5. Extent size must be a multiple of the appropriate block size.
1244 * 6. The extent size hint must be limited to half the AG size to avoid
1245 * alignment extending the extent beyond the limits of the AG.
1248 xfs_ioctl_setattr_check_cowextsize(
1249 struct xfs_inode *ip,
1252 struct xfs_mount *mp = ip->i_mount;
1254 if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
1257 if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) ||
1258 ip->i_d.di_version != 3)
1261 if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
1264 if (fa->fsx_cowextsize != 0) {
1266 xfs_fsblock_t cowextsize_fsb;
1268 cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
1269 if (cowextsize_fsb > MAXEXTLEN)
1272 size = mp->m_sb.sb_blocksize;
1273 if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
1276 if (fa->fsx_cowextsize % size)
1279 fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
1285 xfs_ioctl_setattr_check_projid(
1286 struct xfs_inode *ip,
1289 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1290 if (fa->fsx_projid > (uint16_t)-1 &&
1291 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1295 * Project Quota ID state is only allowed to change from within the init
1296 * namespace. Enforce that restriction only if we are trying to change
1297 * the quota ID state. Everything else is allowed in user namespaces.
1299 if (current_user_ns() == &init_user_ns)
1302 if (xfs_get_projid(ip) != fa->fsx_projid)
1304 if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
1305 (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
1316 struct xfs_mount *mp = ip->i_mount;
1317 struct xfs_trans *tp;
1318 struct xfs_dquot *udqp = NULL;
1319 struct xfs_dquot *pdqp = NULL;
1320 struct xfs_dquot *olddquot = NULL;
1324 trace_xfs_ioctl_setattr(ip);
1326 code = xfs_ioctl_setattr_check_projid(ip, fa);
1331 * If disk quotas is on, we make sure that the dquots do exist on disk,
1332 * before we start any other transactions. Trying to do this later
1333 * is messy. We don't care to take a readlock to look at the ids
1334 * in inode here, because we can't hold it across the trans_reserve.
1335 * If the IDs do change before we take the ilock, we're covered
1336 * because the i_*dquot fields will get updated anyway.
1338 if (XFS_IS_QUOTA_ON(mp)) {
1339 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1340 ip->i_d.di_gid, fa->fsx_projid,
1341 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1347 * Changing DAX config may require inode locking for mapping
1348 * invalidation. These need to be held all the way to transaction commit
1349 * or cancel time, so need to be passed through to
1350 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1353 code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
1355 goto error_free_dquots;
1357 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1360 goto error_free_dquots;
1364 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
1365 xfs_get_projid(ip) != fa->fsx_projid) {
1366 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
1367 capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
1368 if (code) /* out of quota */
1369 goto error_trans_cancel;
1372 code = xfs_ioctl_setattr_check_extsize(ip, fa);
1374 goto error_trans_cancel;
1376 code = xfs_ioctl_setattr_check_cowextsize(ip, fa);
1378 goto error_trans_cancel;
1380 code = xfs_ioctl_setattr_xflags(tp, ip, fa);
1382 goto error_trans_cancel;
1385 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1386 * overrides the following restrictions:
1388 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1389 * successful return from chown()
1392 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1393 !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
1394 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1396 /* Change the ownerships and register project quota modifications */
1397 if (xfs_get_projid(ip) != fa->fsx_projid) {
1398 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1399 olddquot = xfs_qm_vop_chown(tp, ip,
1400 &ip->i_pdquot, pdqp);
1402 ASSERT(ip->i_d.di_version > 1);
1403 xfs_set_projid(ip, fa->fsx_projid);
1407 * Only set the extent size hint if we've already determined that the
1408 * extent size hint should be set on the inode. If no extent size flags
1409 * are set on the inode then unconditionally clear the extent size hint.
1411 if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1412 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1414 ip->i_d.di_extsize = 0;
1415 if (ip->i_d.di_version == 3 &&
1416 (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
1417 ip->i_d.di_cowextsize = fa->fsx_cowextsize >>
1418 mp->m_sb.sb_blocklog;
1420 ip->i_d.di_cowextsize = 0;
1422 code = xfs_trans_commit(tp);
1425 * Release any dquot(s) the inode had kept before chown.
1427 xfs_qm_dqrele(olddquot);
1428 xfs_qm_dqrele(udqp);
1429 xfs_qm_dqrele(pdqp);
1434 xfs_trans_cancel(tp);
1436 xfs_qm_dqrele(udqp);
1437 xfs_qm_dqrele(pdqp);
1450 if (copy_from_user(&fa, arg, sizeof(fa)))
1453 error = mnt_want_write_file(filp);
1456 error = xfs_ioctl_setattr(ip, &fa);
1457 mnt_drop_write_file(filp);
1468 flags = xfs_di2lxflags(ip->i_d.di_flags);
1469 if (copy_to_user(arg, &flags, sizeof(flags)))
1476 struct xfs_inode *ip,
1480 struct xfs_trans *tp;
1486 if (copy_from_user(&flags, arg, sizeof(flags)))
1489 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1490 FS_NOATIME_FL | FS_NODUMP_FL | \
1494 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1496 error = mnt_want_write_file(filp);
1501 * Changing DAX config may require inode locking for mapping
1502 * invalidation. These need to be held all the way to transaction commit
1503 * or cancel time, so need to be passed through to
1504 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1507 error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
1509 goto out_drop_write;
1511 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1513 error = PTR_ERR(tp);
1514 goto out_drop_write;
1517 error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
1519 xfs_trans_cancel(tp);
1520 goto out_drop_write;
1523 error = xfs_trans_commit(tp);
1525 mnt_drop_write_file(filp);
1530 xfs_getbmap_format(void **ap, struct getbmapx *bmv)
1532 struct getbmap __user *base = (struct getbmap __user *)*ap;
1534 /* copy only getbmap portion (not getbmapx) */
1535 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1538 *ap += sizeof(struct getbmap);
1548 struct getbmapx bmx = { 0 };
1551 /* struct getbmap is a strict subset of struct getbmapx. */
1552 if (copy_from_user(&bmx, arg, offsetof(struct getbmapx, bmv_iflags)))
1555 if (bmx.bmv_count < 2)
1558 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1559 if (file->f_mode & FMODE_NOCMTIME)
1560 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1562 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
1563 (__force struct getbmap *)arg+1);
1567 /* copy back header - only size of getbmap */
1568 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1574 xfs_getbmapx_format(void **ap, struct getbmapx *bmv)
1576 struct getbmapx __user *base = (struct getbmapx __user *)*ap;
1578 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1581 *ap += sizeof(struct getbmapx);
1587 struct xfs_inode *ip,
1590 struct getbmapx bmx;
1593 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1596 if (bmx.bmv_count < 2)
1599 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1602 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1603 (__force struct getbmapx *)arg+1);
1607 /* copy back header */
1608 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1614 struct getfsmap_info {
1615 struct xfs_mount *mp;
1616 struct fsmap_head __user *data;
1622 xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv)
1624 struct getfsmap_info *info = priv;
1627 trace_xfs_getfsmap_mapping(info->mp, xfm);
1629 info->last_flags = xfm->fmr_flags;
1630 xfs_fsmap_from_internal(&fm, xfm);
1631 if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm,
1632 sizeof(struct fsmap)))
1640 struct xfs_inode *ip,
1641 struct fsmap_head __user *arg)
1643 struct getfsmap_info info = { NULL };
1644 struct xfs_fsmap_head xhead = {0};
1645 struct fsmap_head head;
1646 bool aborted = false;
1649 if (copy_from_user(&head, arg, sizeof(struct fsmap_head)))
1651 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
1652 memchr_inv(head.fmh_keys[0].fmr_reserved, 0,
1653 sizeof(head.fmh_keys[0].fmr_reserved)) ||
1654 memchr_inv(head.fmh_keys[1].fmr_reserved, 0,
1655 sizeof(head.fmh_keys[1].fmr_reserved)))
1658 xhead.fmh_iflags = head.fmh_iflags;
1659 xhead.fmh_count = head.fmh_count;
1660 xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]);
1661 xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]);
1663 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]);
1664 trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]);
1666 info.mp = ip->i_mount;
1668 error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info);
1669 if (error == XFS_BTREE_QUERY_RANGE_ABORT) {
1675 /* If we didn't abort, set the "last" flag in the last fmx */
1676 if (!aborted && info.idx) {
1677 info.last_flags |= FMR_OF_LAST;
1678 if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags,
1679 &info.last_flags, sizeof(info.last_flags)))
1683 /* copy back header */
1684 head.fmh_entries = xhead.fmh_entries;
1685 head.fmh_oflags = xhead.fmh_oflags;
1686 if (copy_to_user(arg, &head, sizeof(struct fsmap_head)))
1696 xfs_inode_t *ip, *tip;
1700 /* Pull information for the target fd */
1701 f = fdget((int)sxp->sx_fdtarget);
1707 if (!(f.file->f_mode & FMODE_WRITE) ||
1708 !(f.file->f_mode & FMODE_READ) ||
1709 (f.file->f_flags & O_APPEND)) {
1714 tmp = fdget((int)sxp->sx_fdtmp);
1720 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1721 !(tmp.file->f_mode & FMODE_READ) ||
1722 (tmp.file->f_flags & O_APPEND)) {
1724 goto out_put_tmp_file;
1727 if (IS_SWAPFILE(file_inode(f.file)) ||
1728 IS_SWAPFILE(file_inode(tmp.file))) {
1730 goto out_put_tmp_file;
1734 * We need to ensure that the fds passed in point to XFS inodes
1735 * before we cast and access them as XFS structures as we have no
1736 * control over what the user passes us here.
1738 if (f.file->f_op != &xfs_file_operations ||
1739 tmp.file->f_op != &xfs_file_operations) {
1741 goto out_put_tmp_file;
1744 ip = XFS_I(file_inode(f.file));
1745 tip = XFS_I(file_inode(tmp.file));
1747 if (ip->i_mount != tip->i_mount) {
1749 goto out_put_tmp_file;
1752 if (ip->i_ino == tip->i_ino) {
1754 goto out_put_tmp_file;
1757 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1759 goto out_put_tmp_file;
1762 error = xfs_swap_extents(ip, tip, sxp);
1773 * Note: some of the ioctl's return positive numbers as a
1774 * byte count indicating success, such as readlink_by_handle.
1775 * So we don't "sign flip" like most other routines. This means
1776 * true errors need to be returned as a negative value.
1784 struct inode *inode = file_inode(filp);
1785 struct xfs_inode *ip = XFS_I(inode);
1786 struct xfs_mount *mp = ip->i_mount;
1787 void __user *arg = (void __user *)p;
1790 trace_xfs_file_ioctl(ip);
1794 return xfs_ioc_trim(mp, arg);
1795 case XFS_IOC_ALLOCSP:
1796 case XFS_IOC_FREESP:
1797 case XFS_IOC_RESVSP:
1798 case XFS_IOC_UNRESVSP:
1799 case XFS_IOC_ALLOCSP64:
1800 case XFS_IOC_FREESP64:
1801 case XFS_IOC_RESVSP64:
1802 case XFS_IOC_UNRESVSP64:
1803 case XFS_IOC_ZERO_RANGE: {
1806 if (copy_from_user(&bf, arg, sizeof(bf)))
1808 return xfs_ioc_space(filp, cmd, &bf);
1810 case XFS_IOC_DIOINFO: {
1812 xfs_buftarg_t *target =
1813 XFS_IS_REALTIME_INODE(ip) ?
1814 mp->m_rtdev_targp : mp->m_ddev_targp;
1816 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1817 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1819 if (copy_to_user(arg, &da, sizeof(da)))
1824 case XFS_IOC_FSBULKSTAT_SINGLE:
1825 case XFS_IOC_FSBULKSTAT:
1826 case XFS_IOC_FSINUMBERS:
1827 return xfs_ioc_bulkstat(mp, cmd, arg);
1829 case XFS_IOC_FSGEOMETRY_V1:
1830 return xfs_ioc_fsgeometry_v1(mp, arg);
1832 case XFS_IOC_FSGEOMETRY:
1833 return xfs_ioc_fsgeometry(mp, arg);
1835 case XFS_IOC_GETVERSION:
1836 return put_user(inode->i_generation, (int __user *)arg);
1838 case XFS_IOC_FSGETXATTR:
1839 return xfs_ioc_fsgetxattr(ip, 0, arg);
1840 case XFS_IOC_FSGETXATTRA:
1841 return xfs_ioc_fsgetxattr(ip, 1, arg);
1842 case XFS_IOC_FSSETXATTR:
1843 return xfs_ioc_fssetxattr(ip, filp, arg);
1844 case XFS_IOC_GETXFLAGS:
1845 return xfs_ioc_getxflags(ip, arg);
1846 case XFS_IOC_SETXFLAGS:
1847 return xfs_ioc_setxflags(ip, filp, arg);
1849 case XFS_IOC_FSSETDM: {
1850 struct fsdmidata dmi;
1852 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1855 error = mnt_want_write_file(filp);
1859 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1861 mnt_drop_write_file(filp);
1865 case XFS_IOC_GETBMAP:
1866 case XFS_IOC_GETBMAPA:
1867 return xfs_ioc_getbmap(filp, cmd, arg);
1869 case XFS_IOC_GETBMAPX:
1870 return xfs_ioc_getbmapx(ip, arg);
1872 case FS_IOC_GETFSMAP:
1873 return xfs_ioc_getfsmap(ip, arg);
1875 case XFS_IOC_FD_TO_HANDLE:
1876 case XFS_IOC_PATH_TO_HANDLE:
1877 case XFS_IOC_PATH_TO_FSHANDLE: {
1878 xfs_fsop_handlereq_t hreq;
1880 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1882 return xfs_find_handle(cmd, &hreq);
1884 case XFS_IOC_OPEN_BY_HANDLE: {
1885 xfs_fsop_handlereq_t hreq;
1887 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1889 return xfs_open_by_handle(filp, &hreq);
1891 case XFS_IOC_FSSETDM_BY_HANDLE:
1892 return xfs_fssetdm_by_handle(filp, arg);
1894 case XFS_IOC_READLINK_BY_HANDLE: {
1895 xfs_fsop_handlereq_t hreq;
1897 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1899 return xfs_readlink_by_handle(filp, &hreq);
1901 case XFS_IOC_ATTRLIST_BY_HANDLE:
1902 return xfs_attrlist_by_handle(filp, arg);
1904 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1905 return xfs_attrmulti_by_handle(filp, arg);
1907 case XFS_IOC_SWAPEXT: {
1908 struct xfs_swapext sxp;
1910 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1912 error = mnt_want_write_file(filp);
1915 error = xfs_ioc_swapext(&sxp);
1916 mnt_drop_write_file(filp);
1920 case XFS_IOC_FSCOUNTS: {
1921 xfs_fsop_counts_t out;
1923 error = xfs_fs_counts(mp, &out);
1927 if (copy_to_user(arg, &out, sizeof(out)))
1932 case XFS_IOC_SET_RESBLKS: {
1933 xfs_fsop_resblks_t inout;
1936 if (!capable(CAP_SYS_ADMIN))
1939 if (mp->m_flags & XFS_MOUNT_RDONLY)
1942 if (copy_from_user(&inout, arg, sizeof(inout)))
1945 error = mnt_want_write_file(filp);
1949 /* input parameter is passed in resblks field of structure */
1951 error = xfs_reserve_blocks(mp, &in, &inout);
1952 mnt_drop_write_file(filp);
1956 if (copy_to_user(arg, &inout, sizeof(inout)))
1961 case XFS_IOC_GET_RESBLKS: {
1962 xfs_fsop_resblks_t out;
1964 if (!capable(CAP_SYS_ADMIN))
1967 error = xfs_reserve_blocks(mp, NULL, &out);
1971 if (copy_to_user(arg, &out, sizeof(out)))
1977 case XFS_IOC_FSGROWFSDATA: {
1978 xfs_growfs_data_t in;
1980 if (copy_from_user(&in, arg, sizeof(in)))
1983 error = mnt_want_write_file(filp);
1986 error = xfs_growfs_data(mp, &in);
1987 mnt_drop_write_file(filp);
1991 case XFS_IOC_FSGROWFSLOG: {
1992 xfs_growfs_log_t in;
1994 if (copy_from_user(&in, arg, sizeof(in)))
1997 error = mnt_want_write_file(filp);
2000 error = xfs_growfs_log(mp, &in);
2001 mnt_drop_write_file(filp);
2005 case XFS_IOC_FSGROWFSRT: {
2008 if (copy_from_user(&in, arg, sizeof(in)))
2011 error = mnt_want_write_file(filp);
2014 error = xfs_growfs_rt(mp, &in);
2015 mnt_drop_write_file(filp);
2019 case XFS_IOC_GOINGDOWN: {
2022 if (!capable(CAP_SYS_ADMIN))
2025 if (get_user(in, (uint32_t __user *)arg))
2028 return xfs_fs_goingdown(mp, in);
2031 case XFS_IOC_ERROR_INJECTION: {
2032 xfs_error_injection_t in;
2034 if (!capable(CAP_SYS_ADMIN))
2037 if (copy_from_user(&in, arg, sizeof(in)))
2040 return xfs_errortag_add(mp, in.errtag);
2043 case XFS_IOC_ERROR_CLEARALL:
2044 if (!capable(CAP_SYS_ADMIN))
2047 return xfs_errortag_clearall(mp);
2049 case XFS_IOC_FREE_EOFBLOCKS: {
2050 struct xfs_fs_eofblocks eofb;
2051 struct xfs_eofblocks keofb;
2053 if (!capable(CAP_SYS_ADMIN))
2056 if (mp->m_flags & XFS_MOUNT_RDONLY)
2059 if (copy_from_user(&eofb, arg, sizeof(eofb)))
2062 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
2066 return xfs_icache_free_eofblocks(mp, &keofb);