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;
124 hsize = XFS_HSIZE(handle);
128 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
129 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
135 if (cmd == XFS_IOC_FD_TO_HANDLE)
143 * No need to do permission checks on the various pathname components
144 * as the handle operations are privileged.
147 xfs_handle_acceptable(
149 struct dentry *dentry)
155 * Convert userspace handle data into a dentry.
158 xfs_handle_to_dentry(
159 struct file *parfilp,
160 void __user *uhandle,
164 struct xfs_fid64 fid;
167 * Only allow handle opens under a directory.
169 if (!S_ISDIR(file_inode(parfilp)->i_mode))
170 return ERR_PTR(-ENOTDIR);
172 if (hlen != sizeof(xfs_handle_t))
173 return ERR_PTR(-EINVAL);
174 if (copy_from_user(&handle, uhandle, hlen))
175 return ERR_PTR(-EFAULT);
176 if (handle.ha_fid.fid_len !=
177 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
178 return ERR_PTR(-EINVAL);
180 memset(&fid, 0, sizeof(struct fid));
181 fid.ino = handle.ha_fid.fid_ino;
182 fid.gen = handle.ha_fid.fid_gen;
184 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
185 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
186 xfs_handle_acceptable, NULL);
189 STATIC struct dentry *
190 xfs_handlereq_to_dentry(
191 struct file *parfilp,
192 xfs_fsop_handlereq_t *hreq)
194 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
199 struct file *parfilp,
200 xfs_fsop_handlereq_t *hreq)
202 const struct cred *cred = current_cred();
208 struct dentry *dentry;
212 if (!capable(CAP_SYS_ADMIN))
215 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
217 return PTR_ERR(dentry);
218 inode = d_inode(dentry);
220 /* Restrict xfs_open_by_handle to directories & regular files. */
221 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
226 #if BITS_PER_LONG != 32
227 hreq->oflags |= O_LARGEFILE;
230 permflag = hreq->oflags;
231 fmode = OPEN_FMODE(permflag);
232 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
233 (fmode & FMODE_WRITE) && IS_APPEND(inode)) {
238 if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
243 /* Can't write directories. */
244 if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) {
249 fd = get_unused_fd_flags(0);
255 path.mnt = parfilp->f_path.mnt;
256 path.dentry = dentry;
257 filp = dentry_open(&path, hreq->oflags, cred);
261 return PTR_ERR(filp);
264 if (S_ISREG(inode->i_mode)) {
265 filp->f_flags |= O_NOATIME;
266 filp->f_mode |= FMODE_NOCMTIME;
269 fd_install(fd, filp);
278 xfs_readlink_by_handle(
279 struct file *parfilp,
280 xfs_fsop_handlereq_t *hreq)
282 struct dentry *dentry;
286 if (!capable(CAP_SYS_ADMIN))
289 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
291 return PTR_ERR(dentry);
293 /* Restrict this handle operation to symlinks only. */
294 if (!d_is_symlink(dentry)) {
299 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
304 error = vfs_readlink(dentry, hreq->ohandle, olen);
317 xfs_mount_t *mp = ip->i_mount;
321 if (!capable(CAP_SYS_ADMIN))
324 if (XFS_FORCED_SHUTDOWN(mp))
327 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
331 xfs_ilock(ip, XFS_ILOCK_EXCL);
332 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
334 ip->i_d.di_dmevmask = evmask;
335 ip->i_d.di_dmstate = state;
337 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
338 error = xfs_trans_commit(tp);
344 xfs_fssetdm_by_handle(
345 struct file *parfilp,
349 struct fsdmidata fsd;
350 xfs_fsop_setdm_handlereq_t dmhreq;
351 struct dentry *dentry;
353 if (!capable(CAP_MKNOD))
355 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
358 error = mnt_want_write_file(parfilp);
362 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
363 if (IS_ERR(dentry)) {
364 mnt_drop_write_file(parfilp);
365 return PTR_ERR(dentry);
368 if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) {
373 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
378 error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask,
382 mnt_drop_write_file(parfilp);
388 xfs_attrlist_by_handle(
389 struct file *parfilp,
393 attrlist_cursor_kern_t *cursor;
394 struct xfs_fsop_attrlist_handlereq __user *p = arg;
395 xfs_fsop_attrlist_handlereq_t al_hreq;
396 struct dentry *dentry;
399 if (!capable(CAP_SYS_ADMIN))
401 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
403 if (al_hreq.buflen < sizeof(struct attrlist) ||
404 al_hreq.buflen > XFS_XATTR_LIST_MAX)
408 * Reject flags, only allow namespaces.
410 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
413 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
415 return PTR_ERR(dentry);
417 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
421 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
422 error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen,
423 al_hreq.flags, cursor);
427 if (copy_to_user(&p->pos, cursor, sizeof(attrlist_cursor_kern_t))) {
432 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
443 xfs_attrmulti_attr_get(
446 unsigned char __user *ubuf,
453 if (*len > XFS_XATTR_SIZE_MAX)
455 kbuf = kmem_zalloc_large(*len, KM_SLEEP);
459 error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
463 if (copy_to_user(ubuf, kbuf, *len))
472 xfs_attrmulti_attr_set(
475 const unsigned char __user *ubuf,
482 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
484 if (len > XFS_XATTR_SIZE_MAX)
487 kbuf = memdup_user(ubuf, len);
489 return PTR_ERR(kbuf);
491 error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
493 xfs_forget_acl(inode, name, flags);
499 xfs_attrmulti_attr_remove(
506 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
508 error = xfs_attr_remove(XFS_I(inode), name, flags);
510 xfs_forget_acl(inode, name, flags);
515 xfs_attrmulti_by_handle(
516 struct file *parfilp,
520 xfs_attr_multiop_t *ops;
521 xfs_fsop_attrmulti_handlereq_t am_hreq;
522 struct dentry *dentry;
523 unsigned int i, size;
524 unsigned char *attr_name;
526 if (!capable(CAP_SYS_ADMIN))
528 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
532 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
535 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
537 return PTR_ERR(dentry);
540 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
541 if (!size || size > 16 * PAGE_SIZE)
544 ops = memdup_user(am_hreq.ops, size);
546 error = PTR_ERR(ops);
551 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
556 for (i = 0; i < am_hreq.opcount; i++) {
557 ops[i].am_error = strncpy_from_user((char *)attr_name,
558 ops[i].am_attrname, MAXNAMELEN);
559 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
561 if (ops[i].am_error < 0)
564 switch (ops[i].am_opcode) {
566 ops[i].am_error = xfs_attrmulti_attr_get(
567 d_inode(dentry), attr_name,
568 ops[i].am_attrvalue, &ops[i].am_length,
572 ops[i].am_error = mnt_want_write_file(parfilp);
575 ops[i].am_error = xfs_attrmulti_attr_set(
576 d_inode(dentry), attr_name,
577 ops[i].am_attrvalue, ops[i].am_length,
579 mnt_drop_write_file(parfilp);
582 ops[i].am_error = mnt_want_write_file(parfilp);
585 ops[i].am_error = xfs_attrmulti_attr_remove(
586 d_inode(dentry), attr_name,
588 mnt_drop_write_file(parfilp);
591 ops[i].am_error = -EINVAL;
595 if (copy_to_user(am_hreq.ops, ops, size))
612 struct inode *inode = file_inode(filp);
613 struct xfs_inode *ip = XFS_I(inode);
615 enum xfs_prealloc_flags flags = 0;
616 uint iolock = XFS_IOLOCK_EXCL;
620 * Only allow the sys admin to reserve space unless
621 * unwritten extents are enabled.
623 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
624 !capable(CAP_SYS_ADMIN))
627 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
630 if (!(filp->f_mode & FMODE_WRITE))
633 if (!S_ISREG(inode->i_mode))
636 if (filp->f_flags & O_DSYNC)
637 flags |= XFS_PREALLOC_SYNC;
638 if (filp->f_mode & FMODE_NOCMTIME)
639 flags |= XFS_PREALLOC_INVISIBLE;
641 error = mnt_want_write_file(filp);
645 xfs_ilock(ip, iolock);
646 error = xfs_break_layouts(inode, &iolock);
650 xfs_ilock(ip, XFS_MMAPLOCK_EXCL);
651 iolock |= XFS_MMAPLOCK_EXCL;
653 switch (bf->l_whence) {
657 bf->l_start += filp->f_pos;
660 bf->l_start += XFS_ISIZE(ip);
668 * length of <= 0 for resv/unresv/zero is invalid. length for
669 * alloc/free is ignored completely and we have no idea what userspace
670 * might have set it to, so set it to zero to allow range
674 case XFS_IOC_ZERO_RANGE:
676 case XFS_IOC_RESVSP64:
677 case XFS_IOC_UNRESVSP:
678 case XFS_IOC_UNRESVSP64:
679 if (bf->l_len <= 0) {
689 if (bf->l_start < 0 ||
690 bf->l_start > inode->i_sb->s_maxbytes ||
691 bf->l_start + bf->l_len < 0 ||
692 bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
698 case XFS_IOC_ZERO_RANGE:
699 flags |= XFS_PREALLOC_SET;
700 error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
703 case XFS_IOC_RESVSP64:
704 flags |= XFS_PREALLOC_SET;
705 error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
708 case XFS_IOC_UNRESVSP:
709 case XFS_IOC_UNRESVSP64:
710 error = xfs_free_file_space(ip, bf->l_start, bf->l_len);
712 case XFS_IOC_ALLOCSP:
713 case XFS_IOC_ALLOCSP64:
715 case XFS_IOC_FREESP64:
716 flags |= XFS_PREALLOC_CLEAR;
717 if (bf->l_start > XFS_ISIZE(ip)) {
718 error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
719 bf->l_start - XFS_ISIZE(ip), 0);
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 unsigned int di_flags;
943 /* can't set PREALLOC this way, just preserve it */
944 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
945 if (xflags & FS_XFLAG_IMMUTABLE)
946 di_flags |= XFS_DIFLAG_IMMUTABLE;
947 if (xflags & FS_XFLAG_APPEND)
948 di_flags |= XFS_DIFLAG_APPEND;
949 if (xflags & FS_XFLAG_SYNC)
950 di_flags |= XFS_DIFLAG_SYNC;
951 if (xflags & FS_XFLAG_NOATIME)
952 di_flags |= XFS_DIFLAG_NOATIME;
953 if (xflags & FS_XFLAG_NODUMP)
954 di_flags |= XFS_DIFLAG_NODUMP;
955 if (xflags & FS_XFLAG_NODEFRAG)
956 di_flags |= XFS_DIFLAG_NODEFRAG;
957 if (xflags & FS_XFLAG_FILESTREAM)
958 di_flags |= XFS_DIFLAG_FILESTREAM;
959 if (S_ISDIR(VFS_I(ip)->i_mode)) {
960 if (xflags & FS_XFLAG_RTINHERIT)
961 di_flags |= XFS_DIFLAG_RTINHERIT;
962 if (xflags & FS_XFLAG_NOSYMLINKS)
963 di_flags |= XFS_DIFLAG_NOSYMLINKS;
964 if (xflags & FS_XFLAG_EXTSZINHERIT)
965 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
966 if (xflags & FS_XFLAG_PROJINHERIT)
967 di_flags |= XFS_DIFLAG_PROJINHERIT;
968 } else if (S_ISREG(VFS_I(ip)->i_mode)) {
969 if (xflags & FS_XFLAG_REALTIME)
970 di_flags |= XFS_DIFLAG_REALTIME;
971 if (xflags & FS_XFLAG_EXTSIZE)
972 di_flags |= XFS_DIFLAG_EXTSIZE;
974 ip->i_d.di_flags = di_flags;
976 /* diflags2 only valid for v3 inodes. */
977 if (ip->i_d.di_version < 3)
980 di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK);
981 if (xflags & FS_XFLAG_DAX)
982 di_flags2 |= XFS_DIFLAG2_DAX;
983 if (xflags & FS_XFLAG_COWEXTSIZE)
984 di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
986 ip->i_d.di_flags2 = di_flags2;
990 xfs_diflags_to_linux(
991 struct xfs_inode *ip)
993 struct inode *inode = VFS_I(ip);
994 unsigned int xflags = xfs_ip2xflags(ip);
996 if (xflags & FS_XFLAG_IMMUTABLE)
997 inode->i_flags |= S_IMMUTABLE;
999 inode->i_flags &= ~S_IMMUTABLE;
1000 if (xflags & FS_XFLAG_APPEND)
1001 inode->i_flags |= S_APPEND;
1003 inode->i_flags &= ~S_APPEND;
1004 if (xflags & FS_XFLAG_SYNC)
1005 inode->i_flags |= S_SYNC;
1007 inode->i_flags &= ~S_SYNC;
1008 if (xflags & FS_XFLAG_NOATIME)
1009 inode->i_flags |= S_NOATIME;
1011 inode->i_flags &= ~S_NOATIME;
1012 if (xflags & FS_XFLAG_DAX)
1013 inode->i_flags |= S_DAX;
1015 inode->i_flags &= ~S_DAX;
1020 xfs_ioctl_setattr_xflags(
1021 struct xfs_trans *tp,
1022 struct xfs_inode *ip,
1025 struct xfs_mount *mp = ip->i_mount;
1027 /* Can't change realtime flag if any extents are allocated. */
1028 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1029 XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
1032 /* If realtime flag is set then must have realtime device */
1033 if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
1034 if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
1035 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize))
1039 /* Clear reflink if we are actually able to set the rt flag. */
1040 if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
1041 ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
1043 /* Don't allow us to set DAX mode for a reflinked file for now. */
1044 if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
1048 * Can't modify an immutable/append-only file unless
1049 * we have appropriate permission.
1051 if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) ||
1052 (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) &&
1053 !capable(CAP_LINUX_IMMUTABLE))
1056 xfs_set_diflags(ip, fa->fsx_xflags);
1057 xfs_diflags_to_linux(ip);
1058 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1059 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1060 XFS_STATS_INC(mp, xs_ig_attrchg);
1065 * If we are changing DAX flags, we have to ensure the file is clean and any
1066 * cached objects in the address space are invalidated and removed. This
1067 * requires us to lock out other IO and page faults similar to a truncate
1068 * operation. The locks need to be held until the transaction has been committed
1069 * so that the cache invalidation is atomic with respect to the DAX flag
1073 xfs_ioctl_setattr_dax_invalidate(
1074 struct xfs_inode *ip,
1078 struct inode *inode = VFS_I(ip);
1084 * It is only valid to set the DAX flag on regular files and
1085 * directories on filesystems where the block size is equal to the page
1086 * size. On directories it serves as an inherit hint.
1088 if (fa->fsx_xflags & FS_XFLAG_DAX) {
1089 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
1091 if (ip->i_mount->m_sb.sb_blocksize != PAGE_SIZE)
1095 /* If the DAX state is not changing, we have nothing to do here. */
1096 if ((fa->fsx_xflags & FS_XFLAG_DAX) && IS_DAX(inode))
1098 if (!(fa->fsx_xflags & FS_XFLAG_DAX) && !IS_DAX(inode))
1101 /* lock, flush and invalidate mapping in preparation for flag change */
1102 xfs_ilock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1103 error = filemap_write_and_wait(inode->i_mapping);
1106 error = invalidate_inode_pages2(inode->i_mapping);
1110 *join_flags = XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL;
1114 xfs_iunlock(ip, XFS_MMAPLOCK_EXCL | XFS_IOLOCK_EXCL);
1120 * Set up the transaction structure for the setattr operation, checking that we
1121 * have permission to do so. On success, return a clean transaction and the
1122 * inode locked exclusively ready for further operation specific checks. On
1123 * failure, return an error without modifying or locking the inode.
1125 * The inode might already be IO locked on call. If this is the case, it is
1126 * indicated in @join_flags and we take full responsibility for ensuring they
1127 * are unlocked from now on. Hence if we have an error here, we still have to
1128 * unlock them. Otherwise, once they are joined to the transaction, they will
1129 * be unlocked on commit/cancel.
1131 static struct xfs_trans *
1132 xfs_ioctl_setattr_get_trans(
1133 struct xfs_inode *ip,
1136 struct xfs_mount *mp = ip->i_mount;
1137 struct xfs_trans *tp;
1140 if (mp->m_flags & XFS_MOUNT_RDONLY)
1143 if (XFS_FORCED_SHUTDOWN(mp))
1146 error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
1148 return ERR_PTR(error);
1150 xfs_ilock(ip, XFS_ILOCK_EXCL);
1151 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | join_flags);
1155 * CAP_FOWNER overrides the following restrictions:
1157 * The user ID of the calling process must be equal to the file owner
1158 * ID, except in cases where the CAP_FSETID capability is applicable.
1160 if (!inode_owner_or_capable(VFS_I(ip))) {
1165 if (mp->m_flags & XFS_MOUNT_WSYNC)
1166 xfs_trans_set_sync(tp);
1171 xfs_trans_cancel(tp);
1174 xfs_iunlock(ip, join_flags);
1175 return ERR_PTR(error);
1179 * extent size hint validation is somewhat cumbersome. Rules are:
1181 * 1. extent size hint is only valid for directories and regular files
1182 * 2. FS_XFLAG_EXTSIZE is only valid for regular files
1183 * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories.
1184 * 4. can only be changed on regular files if no extents are allocated
1185 * 5. can be changed on directories at any time
1186 * 6. extsize hint of 0 turns off hints, clears inode flags.
1187 * 7. Extent size must be a multiple of the appropriate block size.
1188 * 8. for non-realtime files, the extent size hint must be limited
1189 * to half the AG size to avoid alignment extending the extent beyond the
1193 xfs_ioctl_setattr_check_extsize(
1194 struct xfs_inode *ip,
1197 struct xfs_mount *mp = ip->i_mount;
1199 if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(VFS_I(ip)->i_mode))
1202 if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) &&
1203 !S_ISDIR(VFS_I(ip)->i_mode))
1206 if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_d.di_nextents &&
1207 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize))
1210 if (fa->fsx_extsize != 0) {
1212 xfs_fsblock_t extsize_fsb;
1214 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1215 if (extsize_fsb > MAXEXTLEN)
1218 if (XFS_IS_REALTIME_INODE(ip) ||
1219 (fa->fsx_xflags & FS_XFLAG_REALTIME)) {
1220 size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
1222 size = mp->m_sb.sb_blocksize;
1223 if (extsize_fsb > mp->m_sb.sb_agblocks / 2)
1227 if (fa->fsx_extsize % size)
1230 fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT);
1236 * CoW extent size hint validation rules are:
1238 * 1. CoW extent size hint can only be set if reflink is enabled on the fs.
1239 * The inode does not have to have any shared blocks, but it must be a v3.
1240 * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files;
1241 * for a directory, the hint is propagated to new files.
1242 * 3. Can be changed on files & directories at any time.
1243 * 4. CoW extsize hint of 0 turns off hints, clears inode flags.
1244 * 5. Extent size must be a multiple of the appropriate block size.
1245 * 6. The extent size hint must be limited to half the AG size to avoid
1246 * alignment extending the extent beyond the limits of the AG.
1249 xfs_ioctl_setattr_check_cowextsize(
1250 struct xfs_inode *ip,
1253 struct xfs_mount *mp = ip->i_mount;
1255 if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE))
1258 if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb) ||
1259 ip->i_d.di_version != 3)
1262 if (!S_ISREG(VFS_I(ip)->i_mode) && !S_ISDIR(VFS_I(ip)->i_mode))
1265 if (fa->fsx_cowextsize != 0) {
1267 xfs_fsblock_t cowextsize_fsb;
1269 cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
1270 if (cowextsize_fsb > MAXEXTLEN)
1273 size = mp->m_sb.sb_blocksize;
1274 if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2)
1277 if (fa->fsx_cowextsize % size)
1280 fa->fsx_xflags &= ~FS_XFLAG_COWEXTSIZE;
1286 xfs_ioctl_setattr_check_projid(
1287 struct xfs_inode *ip,
1290 /* Disallow 32bit project ids if projid32bit feature is not enabled. */
1291 if (fa->fsx_projid > (__uint16_t)-1 &&
1292 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
1296 * Project Quota ID state is only allowed to change from within the init
1297 * namespace. Enforce that restriction only if we are trying to change
1298 * the quota ID state. Everything else is allowed in user namespaces.
1300 if (current_user_ns() == &init_user_ns)
1303 if (xfs_get_projid(ip) != fa->fsx_projid)
1305 if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) !=
1306 (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT))
1317 struct xfs_mount *mp = ip->i_mount;
1318 struct xfs_trans *tp;
1319 struct xfs_dquot *udqp = NULL;
1320 struct xfs_dquot *pdqp = NULL;
1321 struct xfs_dquot *olddquot = NULL;
1325 trace_xfs_ioctl_setattr(ip);
1327 code = xfs_ioctl_setattr_check_projid(ip, fa);
1332 * If disk quotas is on, we make sure that the dquots do exist on disk,
1333 * before we start any other transactions. Trying to do this later
1334 * is messy. We don't care to take a readlock to look at the ids
1335 * in inode here, because we can't hold it across the trans_reserve.
1336 * If the IDs do change before we take the ilock, we're covered
1337 * because the i_*dquot fields will get updated anyway.
1339 if (XFS_IS_QUOTA_ON(mp)) {
1340 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
1341 ip->i_d.di_gid, fa->fsx_projid,
1342 XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp);
1348 * Changing DAX config may require inode locking for mapping
1349 * invalidation. These need to be held all the way to transaction commit
1350 * or cancel time, so need to be passed through to
1351 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1354 code = xfs_ioctl_setattr_dax_invalidate(ip, fa, &join_flags);
1356 goto error_free_dquots;
1358 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1361 goto error_free_dquots;
1365 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) &&
1366 xfs_get_projid(ip) != fa->fsx_projid) {
1367 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp,
1368 capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0);
1369 if (code) /* out of quota */
1370 goto error_trans_cancel;
1373 code = xfs_ioctl_setattr_check_extsize(ip, fa);
1375 goto error_trans_cancel;
1377 code = xfs_ioctl_setattr_check_cowextsize(ip, fa);
1379 goto error_trans_cancel;
1381 code = xfs_ioctl_setattr_xflags(tp, ip, fa);
1383 goto error_trans_cancel;
1386 * Change file ownership. Must be the owner or privileged. CAP_FSETID
1387 * overrides the following restrictions:
1389 * The set-user-ID and set-group-ID bits of a file will be cleared upon
1390 * successful return from chown()
1393 if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) &&
1394 !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID))
1395 VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID);
1397 /* Change the ownerships and register project quota modifications */
1398 if (xfs_get_projid(ip) != fa->fsx_projid) {
1399 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1400 olddquot = xfs_qm_vop_chown(tp, ip,
1401 &ip->i_pdquot, pdqp);
1403 ASSERT(ip->i_d.di_version > 1);
1404 xfs_set_projid(ip, fa->fsx_projid);
1408 * Only set the extent size hint if we've already determined that the
1409 * extent size hint should be set on the inode. If no extent size flags
1410 * are set on the inode then unconditionally clear the extent size hint.
1412 if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT))
1413 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1415 ip->i_d.di_extsize = 0;
1416 if (ip->i_d.di_version == 3 &&
1417 (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
1418 ip->i_d.di_cowextsize = fa->fsx_cowextsize >>
1419 mp->m_sb.sb_blocklog;
1421 ip->i_d.di_cowextsize = 0;
1423 code = xfs_trans_commit(tp);
1426 * Release any dquot(s) the inode had kept before chown.
1428 xfs_qm_dqrele(olddquot);
1429 xfs_qm_dqrele(udqp);
1430 xfs_qm_dqrele(pdqp);
1435 xfs_trans_cancel(tp);
1437 xfs_qm_dqrele(udqp);
1438 xfs_qm_dqrele(pdqp);
1451 if (copy_from_user(&fa, arg, sizeof(fa)))
1454 error = mnt_want_write_file(filp);
1457 error = xfs_ioctl_setattr(ip, &fa);
1458 mnt_drop_write_file(filp);
1469 flags = xfs_di2lxflags(ip->i_d.di_flags);
1470 if (copy_to_user(arg, &flags, sizeof(flags)))
1477 struct xfs_inode *ip,
1481 struct xfs_trans *tp;
1487 if (copy_from_user(&flags, arg, sizeof(flags)))
1490 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1491 FS_NOATIME_FL | FS_NODUMP_FL | \
1495 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1497 error = mnt_want_write_file(filp);
1502 * Changing DAX config may require inode locking for mapping
1503 * invalidation. These need to be held all the way to transaction commit
1504 * or cancel time, so need to be passed through to
1505 * xfs_ioctl_setattr_get_trans() so it can apply them to the join call
1508 error = xfs_ioctl_setattr_dax_invalidate(ip, &fa, &join_flags);
1510 goto out_drop_write;
1512 tp = xfs_ioctl_setattr_get_trans(ip, join_flags);
1514 error = PTR_ERR(tp);
1515 goto out_drop_write;
1518 error = xfs_ioctl_setattr_xflags(tp, ip, &fa);
1520 xfs_trans_cancel(tp);
1521 goto out_drop_write;
1524 error = xfs_trans_commit(tp);
1526 mnt_drop_write_file(filp);
1531 xfs_getbmap_format(void **ap, struct getbmapx *bmv)
1533 struct getbmap __user *base = (struct getbmap __user *)*ap;
1535 /* copy only getbmap portion (not getbmapx) */
1536 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1539 *ap += sizeof(struct getbmap);
1549 struct getbmapx bmx = { 0 };
1552 /* struct getbmap is a strict subset of struct getbmapx. */
1553 if (copy_from_user(&bmx, arg, offsetof(struct getbmapx, bmv_iflags)))
1556 if (bmx.bmv_count < 2)
1559 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1560 if (file->f_mode & FMODE_NOCMTIME)
1561 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1563 error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format,
1564 (__force struct getbmap *)arg+1);
1568 /* copy back header - only size of getbmap */
1569 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1575 xfs_getbmapx_format(void **ap, struct getbmapx *bmv)
1577 struct getbmapx __user *base = (struct getbmapx __user *)*ap;
1579 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1582 *ap += sizeof(struct getbmapx);
1588 struct xfs_inode *ip,
1591 struct getbmapx bmx;
1594 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1597 if (bmx.bmv_count < 2)
1600 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1603 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1604 (__force struct getbmapx *)arg+1);
1608 /* copy back header */
1609 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1615 struct getfsmap_info {
1616 struct xfs_mount *mp;
1617 struct fsmap_head __user *data;
1623 xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv)
1625 struct getfsmap_info *info = priv;
1628 trace_xfs_getfsmap_mapping(info->mp, xfm);
1630 info->last_flags = xfm->fmr_flags;
1631 xfs_fsmap_from_internal(&fm, xfm);
1632 if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm,
1633 sizeof(struct fsmap)))
1641 struct xfs_inode *ip,
1642 struct fsmap_head __user *arg)
1644 struct getfsmap_info info = { NULL };
1645 struct xfs_fsmap_head xhead = {0};
1646 struct fsmap_head head;
1647 bool aborted = false;
1650 if (copy_from_user(&head, arg, sizeof(struct fsmap_head)))
1652 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) ||
1653 memchr_inv(head.fmh_keys[0].fmr_reserved, 0,
1654 sizeof(head.fmh_keys[0].fmr_reserved)) ||
1655 memchr_inv(head.fmh_keys[1].fmr_reserved, 0,
1656 sizeof(head.fmh_keys[1].fmr_reserved)))
1659 xhead.fmh_iflags = head.fmh_iflags;
1660 xhead.fmh_count = head.fmh_count;
1661 xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]);
1662 xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]);
1664 trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]);
1665 trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]);
1667 info.mp = ip->i_mount;
1669 error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info);
1670 if (error == XFS_BTREE_QUERY_RANGE_ABORT) {
1676 /* If we didn't abort, set the "last" flag in the last fmx */
1677 if (!aborted && info.idx) {
1678 info.last_flags |= FMR_OF_LAST;
1679 if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags,
1680 &info.last_flags, sizeof(info.last_flags)))
1684 /* copy back header */
1685 head.fmh_entries = xhead.fmh_entries;
1686 head.fmh_oflags = xhead.fmh_oflags;
1687 if (copy_to_user(arg, &head, sizeof(struct fsmap_head)))
1697 xfs_inode_t *ip, *tip;
1701 /* Pull information for the target fd */
1702 f = fdget((int)sxp->sx_fdtarget);
1708 if (!(f.file->f_mode & FMODE_WRITE) ||
1709 !(f.file->f_mode & FMODE_READ) ||
1710 (f.file->f_flags & O_APPEND)) {
1715 tmp = fdget((int)sxp->sx_fdtmp);
1721 if (!(tmp.file->f_mode & FMODE_WRITE) ||
1722 !(tmp.file->f_mode & FMODE_READ) ||
1723 (tmp.file->f_flags & O_APPEND)) {
1725 goto out_put_tmp_file;
1728 if (IS_SWAPFILE(file_inode(f.file)) ||
1729 IS_SWAPFILE(file_inode(tmp.file))) {
1731 goto out_put_tmp_file;
1735 * We need to ensure that the fds passed in point to XFS inodes
1736 * before we cast and access them as XFS structures as we have no
1737 * control over what the user passes us here.
1739 if (f.file->f_op != &xfs_file_operations ||
1740 tmp.file->f_op != &xfs_file_operations) {
1742 goto out_put_tmp_file;
1745 ip = XFS_I(file_inode(f.file));
1746 tip = XFS_I(file_inode(tmp.file));
1748 if (ip->i_mount != tip->i_mount) {
1750 goto out_put_tmp_file;
1753 if (ip->i_ino == tip->i_ino) {
1755 goto out_put_tmp_file;
1758 if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
1760 goto out_put_tmp_file;
1763 error = xfs_swap_extents(ip, tip, sxp);
1774 * Note: some of the ioctl's return positive numbers as a
1775 * byte count indicating success, such as readlink_by_handle.
1776 * So we don't "sign flip" like most other routines. This means
1777 * true errors need to be returned as a negative value.
1785 struct inode *inode = file_inode(filp);
1786 struct xfs_inode *ip = XFS_I(inode);
1787 struct xfs_mount *mp = ip->i_mount;
1788 void __user *arg = (void __user *)p;
1791 trace_xfs_file_ioctl(ip);
1795 return xfs_ioc_trim(mp, arg);
1796 case XFS_IOC_ALLOCSP:
1797 case XFS_IOC_FREESP:
1798 case XFS_IOC_RESVSP:
1799 case XFS_IOC_UNRESVSP:
1800 case XFS_IOC_ALLOCSP64:
1801 case XFS_IOC_FREESP64:
1802 case XFS_IOC_RESVSP64:
1803 case XFS_IOC_UNRESVSP64:
1804 case XFS_IOC_ZERO_RANGE: {
1807 if (copy_from_user(&bf, arg, sizeof(bf)))
1809 return xfs_ioc_space(filp, cmd, &bf);
1811 case XFS_IOC_DIOINFO: {
1813 xfs_buftarg_t *target =
1814 XFS_IS_REALTIME_INODE(ip) ?
1815 mp->m_rtdev_targp : mp->m_ddev_targp;
1817 da.d_mem = da.d_miniosz = target->bt_logical_sectorsize;
1818 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1820 if (copy_to_user(arg, &da, sizeof(da)))
1825 case XFS_IOC_FSBULKSTAT_SINGLE:
1826 case XFS_IOC_FSBULKSTAT:
1827 case XFS_IOC_FSINUMBERS:
1828 return xfs_ioc_bulkstat(mp, cmd, arg);
1830 case XFS_IOC_FSGEOMETRY_V1:
1831 return xfs_ioc_fsgeometry_v1(mp, arg);
1833 case XFS_IOC_FSGEOMETRY:
1834 return xfs_ioc_fsgeometry(mp, arg);
1836 case XFS_IOC_GETVERSION:
1837 return put_user(inode->i_generation, (int __user *)arg);
1839 case XFS_IOC_FSGETXATTR:
1840 return xfs_ioc_fsgetxattr(ip, 0, arg);
1841 case XFS_IOC_FSGETXATTRA:
1842 return xfs_ioc_fsgetxattr(ip, 1, arg);
1843 case XFS_IOC_FSSETXATTR:
1844 return xfs_ioc_fssetxattr(ip, filp, arg);
1845 case XFS_IOC_GETXFLAGS:
1846 return xfs_ioc_getxflags(ip, arg);
1847 case XFS_IOC_SETXFLAGS:
1848 return xfs_ioc_setxflags(ip, filp, arg);
1850 case XFS_IOC_FSSETDM: {
1851 struct fsdmidata dmi;
1853 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1856 error = mnt_want_write_file(filp);
1860 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1862 mnt_drop_write_file(filp);
1866 case XFS_IOC_GETBMAP:
1867 case XFS_IOC_GETBMAPA:
1868 return xfs_ioc_getbmap(filp, cmd, arg);
1870 case XFS_IOC_GETBMAPX:
1871 return xfs_ioc_getbmapx(ip, arg);
1873 case FS_IOC_GETFSMAP:
1874 return xfs_ioc_getfsmap(ip, arg);
1876 case XFS_IOC_FD_TO_HANDLE:
1877 case XFS_IOC_PATH_TO_HANDLE:
1878 case XFS_IOC_PATH_TO_FSHANDLE: {
1879 xfs_fsop_handlereq_t hreq;
1881 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1883 return xfs_find_handle(cmd, &hreq);
1885 case XFS_IOC_OPEN_BY_HANDLE: {
1886 xfs_fsop_handlereq_t hreq;
1888 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1890 return xfs_open_by_handle(filp, &hreq);
1892 case XFS_IOC_FSSETDM_BY_HANDLE:
1893 return xfs_fssetdm_by_handle(filp, arg);
1895 case XFS_IOC_READLINK_BY_HANDLE: {
1896 xfs_fsop_handlereq_t hreq;
1898 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1900 return xfs_readlink_by_handle(filp, &hreq);
1902 case XFS_IOC_ATTRLIST_BY_HANDLE:
1903 return xfs_attrlist_by_handle(filp, arg);
1905 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1906 return xfs_attrmulti_by_handle(filp, arg);
1908 case XFS_IOC_SWAPEXT: {
1909 struct xfs_swapext sxp;
1911 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1913 error = mnt_want_write_file(filp);
1916 error = xfs_ioc_swapext(&sxp);
1917 mnt_drop_write_file(filp);
1921 case XFS_IOC_FSCOUNTS: {
1922 xfs_fsop_counts_t out;
1924 error = xfs_fs_counts(mp, &out);
1928 if (copy_to_user(arg, &out, sizeof(out)))
1933 case XFS_IOC_SET_RESBLKS: {
1934 xfs_fsop_resblks_t inout;
1937 if (!capable(CAP_SYS_ADMIN))
1940 if (mp->m_flags & XFS_MOUNT_RDONLY)
1943 if (copy_from_user(&inout, arg, sizeof(inout)))
1946 error = mnt_want_write_file(filp);
1950 /* input parameter is passed in resblks field of structure */
1952 error = xfs_reserve_blocks(mp, &in, &inout);
1953 mnt_drop_write_file(filp);
1957 if (copy_to_user(arg, &inout, sizeof(inout)))
1962 case XFS_IOC_GET_RESBLKS: {
1963 xfs_fsop_resblks_t out;
1965 if (!capable(CAP_SYS_ADMIN))
1968 error = xfs_reserve_blocks(mp, NULL, &out);
1972 if (copy_to_user(arg, &out, sizeof(out)))
1978 case XFS_IOC_FSGROWFSDATA: {
1979 xfs_growfs_data_t in;
1981 if (copy_from_user(&in, arg, sizeof(in)))
1984 error = mnt_want_write_file(filp);
1987 error = xfs_growfs_data(mp, &in);
1988 mnt_drop_write_file(filp);
1992 case XFS_IOC_FSGROWFSLOG: {
1993 xfs_growfs_log_t in;
1995 if (copy_from_user(&in, arg, sizeof(in)))
1998 error = mnt_want_write_file(filp);
2001 error = xfs_growfs_log(mp, &in);
2002 mnt_drop_write_file(filp);
2006 case XFS_IOC_FSGROWFSRT: {
2009 if (copy_from_user(&in, arg, sizeof(in)))
2012 error = mnt_want_write_file(filp);
2015 error = xfs_growfs_rt(mp, &in);
2016 mnt_drop_write_file(filp);
2020 case XFS_IOC_GOINGDOWN: {
2023 if (!capable(CAP_SYS_ADMIN))
2026 if (get_user(in, (__uint32_t __user *)arg))
2029 return xfs_fs_goingdown(mp, in);
2032 case XFS_IOC_ERROR_INJECTION: {
2033 xfs_error_injection_t in;
2035 if (!capable(CAP_SYS_ADMIN))
2038 if (copy_from_user(&in, arg, sizeof(in)))
2041 return xfs_errortag_add(in.errtag, mp);
2044 case XFS_IOC_ERROR_CLEARALL:
2045 if (!capable(CAP_SYS_ADMIN))
2048 return xfs_errortag_clearall(mp, 1);
2050 case XFS_IOC_FREE_EOFBLOCKS: {
2051 struct xfs_fs_eofblocks eofb;
2052 struct xfs_eofblocks keofb;
2054 if (!capable(CAP_SYS_ADMIN))
2057 if (mp->m_flags & XFS_MOUNT_RDONLY)
2060 if (copy_from_user(&eofb, arg, sizeof(eofb)))
2063 error = xfs_fs_eofblocks_from_user(&eofb, &keofb);
2067 return xfs_icache_free_eofblocks(mp, &keofb);