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
23 #include "xfs_trans.h"
26 #include "xfs_alloc.h"
27 #include "xfs_mount.h"
28 #include "xfs_bmap_btree.h"
29 #include "xfs_dinode.h"
30 #include "xfs_inode.h"
31 #include "xfs_ioctl.h"
32 #include "xfs_rtalloc.h"
33 #include "xfs_itable.h"
34 #include "xfs_error.h"
37 #include "xfs_buf_item.h"
38 #include "xfs_utils.h"
39 #include "xfs_dfrag.h"
40 #include "xfs_fsops.h"
41 #include "xfs_vnodeops.h"
42 #include "xfs_discard.h"
43 #include "xfs_quota.h"
44 #include "xfs_inode_item.h"
45 #include "xfs_export.h"
46 #include "xfs_trace.h"
48 #include <linux/capability.h>
49 #include <linux/dcache.h>
50 #include <linux/mount.h>
51 #include <linux/namei.h>
52 #include <linux/pagemap.h>
53 #include <linux/slab.h>
54 #include <linux/exportfs.h>
57 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
58 * a file or fs handle.
60 * XFS_IOC_PATH_TO_FSHANDLE
61 * returns fs handle for a mount point or path within that mount point
62 * XFS_IOC_FD_TO_HANDLE
63 * returns full handle for a FD opened in user space
64 * XFS_IOC_PATH_TO_HANDLE
65 * returns full handle for a path
70 xfs_fsop_handlereq_t *hreq)
75 struct file *file = NULL;
80 if (cmd == XFS_IOC_FD_TO_HANDLE) {
81 file = fget(hreq->fd);
84 inode = file->f_path.dentry->d_inode;
86 error = user_lpath((const char __user *)hreq->path, &path);
89 inode = path.dentry->d_inode;
94 * We can only generate handles for inodes residing on a XFS filesystem,
95 * and only for regular files, directories or symbolic links.
98 if (inode->i_sb->s_magic != XFS_SB_MAGIC)
102 if (!S_ISREG(inode->i_mode) &&
103 !S_ISDIR(inode->i_mode) &&
104 !S_ISLNK(inode->i_mode))
108 memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
110 if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
112 * This handle only contains an fsid, zero the rest.
114 memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
115 hsize = sizeof(xfs_fsid_t);
119 lock_mode = xfs_ilock_map_shared(ip);
120 handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
121 sizeof(handle.ha_fid.fid_len);
122 handle.ha_fid.fid_pad = 0;
123 handle.ha_fid.fid_gen = ip->i_d.di_gen;
124 handle.ha_fid.fid_ino = ip->i_ino;
125 xfs_iunlock_map_shared(ip, lock_mode);
127 hsize = XFS_HSIZE(handle);
131 if (copy_to_user(hreq->ohandle, &handle, hsize) ||
132 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
138 if (cmd == XFS_IOC_FD_TO_HANDLE)
146 * No need to do permission checks on the various pathname components
147 * as the handle operations are privileged.
150 xfs_handle_acceptable(
152 struct dentry *dentry)
158 * Convert userspace handle data into a dentry.
161 xfs_handle_to_dentry(
162 struct file *parfilp,
163 void __user *uhandle,
167 struct xfs_fid64 fid;
170 * Only allow handle opens under a directory.
172 if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode))
173 return ERR_PTR(-ENOTDIR);
175 if (hlen != sizeof(xfs_handle_t))
176 return ERR_PTR(-EINVAL);
177 if (copy_from_user(&handle, uhandle, hlen))
178 return ERR_PTR(-EFAULT);
179 if (handle.ha_fid.fid_len !=
180 sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len))
181 return ERR_PTR(-EINVAL);
183 memset(&fid, 0, sizeof(struct fid));
184 fid.ino = handle.ha_fid.fid_ino;
185 fid.gen = handle.ha_fid.fid_gen;
187 return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3,
188 FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG,
189 xfs_handle_acceptable, NULL);
192 STATIC struct dentry *
193 xfs_handlereq_to_dentry(
194 struct file *parfilp,
195 xfs_fsop_handlereq_t *hreq)
197 return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen);
202 struct file *parfilp,
203 xfs_fsop_handlereq_t *hreq)
205 const struct cred *cred = current_cred();
211 struct dentry *dentry;
213 if (!capable(CAP_SYS_ADMIN))
214 return -XFS_ERROR(EPERM);
216 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
218 return PTR_ERR(dentry);
219 inode = dentry->d_inode;
221 /* Restrict xfs_open_by_handle to directories & regular files. */
222 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
223 error = -XFS_ERROR(EPERM);
227 #if BITS_PER_LONG != 32
228 hreq->oflags |= O_LARGEFILE;
231 /* Put open permission in namei format. */
232 permflag = hreq->oflags;
233 if ((permflag+1) & O_ACCMODE)
235 if (permflag & O_TRUNC)
238 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
239 (permflag & FMODE_WRITE) && IS_APPEND(inode)) {
240 error = -XFS_ERROR(EPERM);
244 if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
245 error = -XFS_ERROR(EACCES);
249 /* Can't write directories. */
250 if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) {
251 error = -XFS_ERROR(EISDIR);
255 fd = get_unused_fd();
261 filp = dentry_open(dentry, mntget(parfilp->f_path.mnt),
265 return PTR_ERR(filp);
268 if (S_ISREG(inode->i_mode)) {
269 filp->f_flags |= O_NOATIME;
270 filp->f_mode |= FMODE_NOCMTIME;
273 fd_install(fd, filp);
282 * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's
283 * unused first argument.
298 if (len > (unsigned) buflen)
300 if (copy_to_user(buffer, link, len))
308 xfs_readlink_by_handle(
309 struct file *parfilp,
310 xfs_fsop_handlereq_t *hreq)
312 struct dentry *dentry;
317 if (!capable(CAP_SYS_ADMIN))
318 return -XFS_ERROR(EPERM);
320 dentry = xfs_handlereq_to_dentry(parfilp, hreq);
322 return PTR_ERR(dentry);
324 /* Restrict this handle operation to symlinks only. */
325 if (!S_ISLNK(dentry->d_inode->i_mode)) {
326 error = -XFS_ERROR(EINVAL);
330 if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) {
331 error = -XFS_ERROR(EFAULT);
335 link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
337 error = -XFS_ERROR(ENOMEM);
341 error = -xfs_readlink(XFS_I(dentry->d_inode), link);
344 error = do_readlink(hreq->ohandle, olen, link);
356 xfs_fssetdm_by_handle(
357 struct file *parfilp,
361 struct fsdmidata fsd;
362 xfs_fsop_setdm_handlereq_t dmhreq;
363 struct dentry *dentry;
365 if (!capable(CAP_MKNOD))
366 return -XFS_ERROR(EPERM);
367 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
368 return -XFS_ERROR(EFAULT);
370 dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq);
372 return PTR_ERR(dentry);
374 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
375 error = -XFS_ERROR(EPERM);
379 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
380 error = -XFS_ERROR(EFAULT);
384 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
393 xfs_attrlist_by_handle(
394 struct file *parfilp,
398 attrlist_cursor_kern_t *cursor;
399 xfs_fsop_attrlist_handlereq_t al_hreq;
400 struct dentry *dentry;
403 if (!capable(CAP_SYS_ADMIN))
404 return -XFS_ERROR(EPERM);
405 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
406 return -XFS_ERROR(EFAULT);
407 if (al_hreq.buflen < sizeof(struct attrlist) ||
408 al_hreq.buflen > XATTR_LIST_MAX)
409 return -XFS_ERROR(EINVAL);
412 * Reject flags, only allow namespaces.
414 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
415 return -XFS_ERROR(EINVAL);
417 dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq);
419 return PTR_ERR(dentry);
421 kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL);
425 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
426 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
427 al_hreq.flags, cursor);
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 > XATTR_SIZE_MAX)
454 kbuf = kmalloc(*len, GFP_KERNEL);
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 > 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);
496 xfs_attrmulti_attr_remove(
501 if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
503 return xfs_attr_remove(XFS_I(inode), name, flags);
507 xfs_attrmulti_by_handle(
508 struct file *parfilp,
512 xfs_attr_multiop_t *ops;
513 xfs_fsop_attrmulti_handlereq_t am_hreq;
514 struct dentry *dentry;
515 unsigned int i, size;
516 unsigned char *attr_name;
518 if (!capable(CAP_SYS_ADMIN))
519 return -XFS_ERROR(EPERM);
520 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
521 return -XFS_ERROR(EFAULT);
524 if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t))
527 dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq);
529 return PTR_ERR(dentry);
532 size = am_hreq.opcount * sizeof(xfs_attr_multiop_t);
533 if (!size || size > 16 * PAGE_SIZE)
536 ops = memdup_user(am_hreq.ops, size);
538 error = PTR_ERR(ops);
542 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
547 for (i = 0; i < am_hreq.opcount; i++) {
548 ops[i].am_error = strncpy_from_user((char *)attr_name,
549 ops[i].am_attrname, MAXNAMELEN);
550 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
552 if (ops[i].am_error < 0)
555 switch (ops[i].am_opcode) {
557 ops[i].am_error = xfs_attrmulti_attr_get(
558 dentry->d_inode, attr_name,
559 ops[i].am_attrvalue, &ops[i].am_length,
563 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
566 ops[i].am_error = xfs_attrmulti_attr_set(
567 dentry->d_inode, attr_name,
568 ops[i].am_attrvalue, ops[i].am_length,
570 mnt_drop_write(parfilp->f_path.mnt);
573 ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
576 ops[i].am_error = xfs_attrmulti_attr_remove(
577 dentry->d_inode, attr_name,
579 mnt_drop_write(parfilp->f_path.mnt);
582 ops[i].am_error = EINVAL;
586 if (copy_to_user(am_hreq.ops, ops, size))
587 error = XFS_ERROR(EFAULT);
599 struct xfs_inode *ip,
610 * Only allow the sys admin to reserve space unless
611 * unwritten extents are enabled.
613 if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) &&
614 !capable(CAP_SYS_ADMIN))
615 return -XFS_ERROR(EPERM);
617 if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
618 return -XFS_ERROR(EPERM);
620 if (!(filp->f_mode & FMODE_WRITE))
621 return -XFS_ERROR(EBADF);
623 if (!S_ISREG(inode->i_mode))
624 return -XFS_ERROR(EINVAL);
626 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
627 attr_flags |= XFS_ATTR_NONBLOCK;
629 if (filp->f_flags & O_DSYNC)
630 attr_flags |= XFS_ATTR_SYNC;
632 if (ioflags & IO_INVIS)
633 attr_flags |= XFS_ATTR_DMI;
635 error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags);
645 xfs_fsop_bulkreq_t bulkreq;
646 int count; /* # of records returned */
647 xfs_ino_t inlast; /* last inode number */
651 /* done = 1 if there are more stats to get and if bulkstat */
652 /* should be called again (unused here, but used in dmapi) */
654 if (!capable(CAP_SYS_ADMIN))
657 if (XFS_FORCED_SHUTDOWN(mp))
658 return -XFS_ERROR(EIO);
660 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
661 return -XFS_ERROR(EFAULT);
663 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
664 return -XFS_ERROR(EFAULT);
666 if ((count = bulkreq.icount) <= 0)
667 return -XFS_ERROR(EINVAL);
669 if (bulkreq.ubuffer == NULL)
670 return -XFS_ERROR(EINVAL);
672 if (cmd == XFS_IOC_FSINUMBERS)
673 error = xfs_inumbers(mp, &inlast, &count,
674 bulkreq.ubuffer, xfs_inumbers_fmt);
675 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
676 error = xfs_bulkstat_single(mp, &inlast,
677 bulkreq.ubuffer, &done);
678 else /* XFS_IOC_FSBULKSTAT */
679 error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one,
680 sizeof(xfs_bstat_t), bulkreq.ubuffer,
686 if (bulkreq.ocount != NULL) {
687 if (copy_to_user(bulkreq.lastip, &inlast,
689 return -XFS_ERROR(EFAULT);
691 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
692 return -XFS_ERROR(EFAULT);
699 xfs_ioc_fsgeometry_v1(
703 xfs_fsop_geom_t fsgeo;
706 error = xfs_fs_geometry(mp, &fsgeo, 3);
711 * Caller should have passed an argument of type
712 * xfs_fsop_geom_v1_t. This is a proper subset of the
713 * xfs_fsop_geom_t that xfs_fs_geometry() fills in.
715 if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t)))
716 return -XFS_ERROR(EFAULT);
725 xfs_fsop_geom_t fsgeo;
728 error = xfs_fs_geometry(mp, &fsgeo, 4);
732 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
733 return -XFS_ERROR(EFAULT);
738 * Linux extended inode flags interface.
742 xfs_merge_ioc_xflags(
746 unsigned int xflags = start;
748 if (flags & FS_IMMUTABLE_FL)
749 xflags |= XFS_XFLAG_IMMUTABLE;
751 xflags &= ~XFS_XFLAG_IMMUTABLE;
752 if (flags & FS_APPEND_FL)
753 xflags |= XFS_XFLAG_APPEND;
755 xflags &= ~XFS_XFLAG_APPEND;
756 if (flags & FS_SYNC_FL)
757 xflags |= XFS_XFLAG_SYNC;
759 xflags &= ~XFS_XFLAG_SYNC;
760 if (flags & FS_NOATIME_FL)
761 xflags |= XFS_XFLAG_NOATIME;
763 xflags &= ~XFS_XFLAG_NOATIME;
764 if (flags & FS_NODUMP_FL)
765 xflags |= XFS_XFLAG_NODUMP;
767 xflags &= ~XFS_XFLAG_NODUMP;
776 unsigned int flags = 0;
778 if (di_flags & XFS_DIFLAG_IMMUTABLE)
779 flags |= FS_IMMUTABLE_FL;
780 if (di_flags & XFS_DIFLAG_APPEND)
781 flags |= FS_APPEND_FL;
782 if (di_flags & XFS_DIFLAG_SYNC)
784 if (di_flags & XFS_DIFLAG_NOATIME)
785 flags |= FS_NOATIME_FL;
786 if (di_flags & XFS_DIFLAG_NODUMP)
787 flags |= FS_NODUMP_FL;
799 memset(&fa, 0, sizeof(struct fsxattr));
801 xfs_ilock(ip, XFS_ILOCK_SHARED);
802 fa.fsx_xflags = xfs_ip2xflags(ip);
803 fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
804 fa.fsx_projid = xfs_get_projid(ip);
808 if (ip->i_afp->if_flags & XFS_IFEXTENTS)
809 fa.fsx_nextents = ip->i_afp->if_bytes /
810 sizeof(xfs_bmbt_rec_t);
812 fa.fsx_nextents = ip->i_d.di_anextents;
816 if (ip->i_df.if_flags & XFS_IFEXTENTS)
817 fa.fsx_nextents = ip->i_df.if_bytes /
818 sizeof(xfs_bmbt_rec_t);
820 fa.fsx_nextents = ip->i_d.di_nextents;
822 xfs_iunlock(ip, XFS_ILOCK_SHARED);
824 if (copy_to_user(arg, &fa, sizeof(fa)))
831 struct xfs_inode *ip,
834 unsigned int di_flags;
836 /* can't set PREALLOC this way, just preserve it */
837 di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC);
838 if (xflags & XFS_XFLAG_IMMUTABLE)
839 di_flags |= XFS_DIFLAG_IMMUTABLE;
840 if (xflags & XFS_XFLAG_APPEND)
841 di_flags |= XFS_DIFLAG_APPEND;
842 if (xflags & XFS_XFLAG_SYNC)
843 di_flags |= XFS_DIFLAG_SYNC;
844 if (xflags & XFS_XFLAG_NOATIME)
845 di_flags |= XFS_DIFLAG_NOATIME;
846 if (xflags & XFS_XFLAG_NODUMP)
847 di_flags |= XFS_DIFLAG_NODUMP;
848 if (xflags & XFS_XFLAG_PROJINHERIT)
849 di_flags |= XFS_DIFLAG_PROJINHERIT;
850 if (xflags & XFS_XFLAG_NODEFRAG)
851 di_flags |= XFS_DIFLAG_NODEFRAG;
852 if (xflags & XFS_XFLAG_FILESTREAM)
853 di_flags |= XFS_DIFLAG_FILESTREAM;
854 if (S_ISDIR(ip->i_d.di_mode)) {
855 if (xflags & XFS_XFLAG_RTINHERIT)
856 di_flags |= XFS_DIFLAG_RTINHERIT;
857 if (xflags & XFS_XFLAG_NOSYMLINKS)
858 di_flags |= XFS_DIFLAG_NOSYMLINKS;
859 if (xflags & XFS_XFLAG_EXTSZINHERIT)
860 di_flags |= XFS_DIFLAG_EXTSZINHERIT;
861 } else if (S_ISREG(ip->i_d.di_mode)) {
862 if (xflags & XFS_XFLAG_REALTIME)
863 di_flags |= XFS_DIFLAG_REALTIME;
864 if (xflags & XFS_XFLAG_EXTSIZE)
865 di_flags |= XFS_DIFLAG_EXTSIZE;
868 ip->i_d.di_flags = di_flags;
872 xfs_diflags_to_linux(
873 struct xfs_inode *ip)
875 struct inode *inode = VFS_I(ip);
876 unsigned int xflags = xfs_ip2xflags(ip);
878 if (xflags & XFS_XFLAG_IMMUTABLE)
879 inode->i_flags |= S_IMMUTABLE;
881 inode->i_flags &= ~S_IMMUTABLE;
882 if (xflags & XFS_XFLAG_APPEND)
883 inode->i_flags |= S_APPEND;
885 inode->i_flags &= ~S_APPEND;
886 if (xflags & XFS_XFLAG_SYNC)
887 inode->i_flags |= S_SYNC;
889 inode->i_flags &= ~S_SYNC;
890 if (xflags & XFS_XFLAG_NOATIME)
891 inode->i_flags |= S_NOATIME;
893 inode->i_flags &= ~S_NOATIME;
897 #define FSX_EXTSIZE 2
899 #define FSX_NONBLOCK 8
907 struct xfs_mount *mp = ip->i_mount;
908 struct xfs_trans *tp;
909 unsigned int lock_flags = 0;
910 struct xfs_dquot *udqp = NULL;
911 struct xfs_dquot *gdqp = NULL;
912 struct xfs_dquot *olddquot = NULL;
915 trace_xfs_ioctl_setattr(ip);
917 if (mp->m_flags & XFS_MOUNT_RDONLY)
918 return XFS_ERROR(EROFS);
919 if (XFS_FORCED_SHUTDOWN(mp))
920 return XFS_ERROR(EIO);
923 * Disallow 32bit project ids when projid32bit feature is not enabled.
925 if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) &&
926 !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
927 return XFS_ERROR(EINVAL);
930 * If disk quotas is on, we make sure that the dquots do exist on disk,
931 * before we start any other transactions. Trying to do this later
932 * is messy. We don't care to take a readlock to look at the ids
933 * in inode here, because we can't hold it across the trans_reserve.
934 * If the IDs do change before we take the ilock, we're covered
935 * because the i_*dquot fields will get updated anyway.
937 if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) {
938 code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid,
939 ip->i_d.di_gid, fa->fsx_projid,
940 XFS_QMOPT_PQUOTA, &udqp, &gdqp);
946 * For the other attributes, we acquire the inode lock and
947 * first do an error checking pass.
949 tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
950 code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
954 lock_flags = XFS_ILOCK_EXCL;
955 xfs_ilock(ip, lock_flags);
958 * CAP_FOWNER overrides the following restrictions:
960 * The user ID of the calling process must be equal
961 * to the file owner ID, except in cases where the
962 * CAP_FSETID capability is applicable.
964 if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) {
965 code = XFS_ERROR(EPERM);
970 * Do a quota reservation only if projid is actually going to change.
972 if (mask & FSX_PROJID) {
973 if (XFS_IS_QUOTA_RUNNING(mp) &&
974 XFS_IS_PQUOTA_ON(mp) &&
975 xfs_get_projid(ip) != fa->fsx_projid) {
977 code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
978 capable(CAP_FOWNER) ?
979 XFS_QMOPT_FORCE_RES : 0);
980 if (code) /* out of quota */
985 if (mask & FSX_EXTSIZE) {
987 * Can't change extent size if any extents are allocated.
989 if (ip->i_d.di_nextents &&
990 ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) !=
992 code = XFS_ERROR(EINVAL); /* EFBIG? */
997 * Extent size must be a multiple of the appropriate block
998 * size, if set at all. It must also be smaller than the
999 * maximum extent size supported by the filesystem.
1001 * Also, for non-realtime files, limit the extent size hint to
1002 * half the size of the AGs in the filesystem so alignment
1003 * doesn't result in extents larger than an AG.
1005 if (fa->fsx_extsize != 0) {
1007 xfs_fsblock_t extsize_fsb;
1009 extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize);
1010 if (extsize_fsb > MAXEXTLEN) {
1011 code = XFS_ERROR(EINVAL);
1015 if (XFS_IS_REALTIME_INODE(ip) ||
1016 ((mask & FSX_XFLAGS) &&
1017 (fa->fsx_xflags & XFS_XFLAG_REALTIME))) {
1018 size = mp->m_sb.sb_rextsize <<
1019 mp->m_sb.sb_blocklog;
1021 size = mp->m_sb.sb_blocksize;
1022 if (extsize_fsb > mp->m_sb.sb_agblocks / 2) {
1023 code = XFS_ERROR(EINVAL);
1028 if (fa->fsx_extsize % size) {
1029 code = XFS_ERROR(EINVAL);
1036 if (mask & FSX_XFLAGS) {
1038 * Can't change realtime flag if any extents are allocated.
1040 if ((ip->i_d.di_nextents || ip->i_delayed_blks) &&
1041 (XFS_IS_REALTIME_INODE(ip)) !=
1042 (fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1043 code = XFS_ERROR(EINVAL); /* EFBIG? */
1048 * If realtime flag is set then must have realtime data.
1050 if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) {
1051 if ((mp->m_sb.sb_rblocks == 0) ||
1052 (mp->m_sb.sb_rextsize == 0) ||
1053 (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) {
1054 code = XFS_ERROR(EINVAL);
1060 * Can't modify an immutable/append-only file unless
1061 * we have appropriate permission.
1063 if ((ip->i_d.di_flags &
1064 (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) ||
1066 (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) &&
1067 !capable(CAP_LINUX_IMMUTABLE)) {
1068 code = XFS_ERROR(EPERM);
1073 xfs_trans_ijoin(tp, ip, 0);
1076 * Change file ownership. Must be the owner or privileged.
1078 if (mask & FSX_PROJID) {
1080 * CAP_FSETID overrides the following restrictions:
1082 * The set-user-ID and set-group-ID bits of a file will be
1083 * cleared upon successful return from chown()
1085 if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) &&
1086 !capable(CAP_FSETID))
1087 ip->i_d.di_mode &= ~(S_ISUID|S_ISGID);
1090 * Change the ownerships and register quota modifications
1091 * in the transaction.
1093 if (xfs_get_projid(ip) != fa->fsx_projid) {
1094 if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) {
1095 olddquot = xfs_qm_vop_chown(tp, ip,
1096 &ip->i_gdquot, gdqp);
1098 xfs_set_projid(ip, fa->fsx_projid);
1101 * We may have to rev the inode as well as
1102 * the superblock version number since projids didn't
1103 * exist before DINODE_VERSION_2 and SB_VERSION_NLINK.
1105 if (ip->i_d.di_version == 1)
1106 xfs_bump_ino_vers2(tp, ip);
1111 if (mask & FSX_EXTSIZE)
1112 ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog;
1113 if (mask & FSX_XFLAGS) {
1114 xfs_set_diflags(ip, fa->fsx_xflags);
1115 xfs_diflags_to_linux(ip);
1118 xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
1119 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1121 XFS_STATS_INC(xs_ig_attrchg);
1124 * If this is a synchronous mount, make sure that the
1125 * transaction goes to disk before returning to the user.
1126 * This is slightly sub-optimal in that truncates require
1127 * two sync transactions instead of one for wsync filesystems.
1128 * One for the truncate and one for the timestamps since we
1129 * don't want to change the timestamps unless we're sure the
1130 * truncate worked. Truncates are less than 1% of the laddis
1131 * mix so this probably isn't worth the trouble to optimize.
1133 if (mp->m_flags & XFS_MOUNT_WSYNC)
1134 xfs_trans_set_sync(tp);
1135 code = xfs_trans_commit(tp, 0);
1136 xfs_iunlock(ip, lock_flags);
1139 * Release any dquot(s) the inode had kept before chown.
1141 xfs_qm_dqrele(olddquot);
1142 xfs_qm_dqrele(udqp);
1143 xfs_qm_dqrele(gdqp);
1148 xfs_qm_dqrele(udqp);
1149 xfs_qm_dqrele(gdqp);
1150 xfs_trans_cancel(tp, 0);
1152 xfs_iunlock(ip, lock_flags);
1165 if (copy_from_user(&fa, arg, sizeof(fa)))
1168 mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID;
1169 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1170 mask |= FSX_NONBLOCK;
1172 return -xfs_ioctl_setattr(ip, &fa, mask);
1182 flags = xfs_di2lxflags(ip->i_d.di_flags);
1183 if (copy_to_user(arg, &flags, sizeof(flags)))
1198 if (copy_from_user(&flags, arg, sizeof(flags)))
1201 if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
1202 FS_NOATIME_FL | FS_NODUMP_FL | \
1207 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1208 mask |= FSX_NONBLOCK;
1209 fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
1211 return -xfs_ioctl_setattr(ip, &fa, mask);
1215 xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full)
1217 struct getbmap __user *base = *ap;
1219 /* copy only getbmap portion (not getbmapx) */
1220 if (copy_to_user(base, bmv, sizeof(struct getbmap)))
1221 return XFS_ERROR(EFAULT);
1223 *ap += sizeof(struct getbmap);
1229 struct xfs_inode *ip,
1234 struct getbmapx bmx;
1237 if (copy_from_user(&bmx, arg, sizeof(struct getbmapx)))
1238 return -XFS_ERROR(EFAULT);
1240 if (bmx.bmv_count < 2)
1241 return -XFS_ERROR(EINVAL);
1243 bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1244 if (ioflags & IO_INVIS)
1245 bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ;
1247 error = xfs_getbmap(ip, &bmx, xfs_getbmap_format,
1248 (struct getbmap *)arg+1);
1252 /* copy back header - only size of getbmap */
1253 if (copy_to_user(arg, &bmx, sizeof(struct getbmap)))
1254 return -XFS_ERROR(EFAULT);
1259 xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full)
1261 struct getbmapx __user *base = *ap;
1263 if (copy_to_user(base, bmv, sizeof(struct getbmapx)))
1264 return XFS_ERROR(EFAULT);
1266 *ap += sizeof(struct getbmapx);
1272 struct xfs_inode *ip,
1275 struct getbmapx bmx;
1278 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1279 return -XFS_ERROR(EFAULT);
1281 if (bmx.bmv_count < 2)
1282 return -XFS_ERROR(EINVAL);
1284 if (bmx.bmv_iflags & (~BMV_IF_VALID))
1285 return -XFS_ERROR(EINVAL);
1287 error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format,
1288 (struct getbmapx *)arg+1);
1292 /* copy back header */
1293 if (copy_to_user(arg, &bmx, sizeof(struct getbmapx)))
1294 return -XFS_ERROR(EFAULT);
1300 * Note: some of the ioctl's return positive numbers as a
1301 * byte count indicating success, such as readlink_by_handle.
1302 * So we don't "sign flip" like most other routines. This means
1303 * true errors need to be returned as a negative value.
1311 struct inode *inode = filp->f_path.dentry->d_inode;
1312 struct xfs_inode *ip = XFS_I(inode);
1313 struct xfs_mount *mp = ip->i_mount;
1314 void __user *arg = (void __user *)p;
1318 if (filp->f_mode & FMODE_NOCMTIME)
1319 ioflags |= IO_INVIS;
1321 trace_xfs_file_ioctl(ip);
1325 return xfs_ioc_trim(mp, arg);
1326 case XFS_IOC_ALLOCSP:
1327 case XFS_IOC_FREESP:
1328 case XFS_IOC_RESVSP:
1329 case XFS_IOC_UNRESVSP:
1330 case XFS_IOC_ALLOCSP64:
1331 case XFS_IOC_FREESP64:
1332 case XFS_IOC_RESVSP64:
1333 case XFS_IOC_UNRESVSP64:
1334 case XFS_IOC_ZERO_RANGE: {
1337 if (copy_from_user(&bf, arg, sizeof(bf)))
1338 return -XFS_ERROR(EFAULT);
1339 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
1341 case XFS_IOC_DIOINFO: {
1343 xfs_buftarg_t *target =
1344 XFS_IS_REALTIME_INODE(ip) ?
1345 mp->m_rtdev_targp : mp->m_ddev_targp;
1347 da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
1348 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
1350 if (copy_to_user(arg, &da, sizeof(da)))
1351 return -XFS_ERROR(EFAULT);
1355 case XFS_IOC_FSBULKSTAT_SINGLE:
1356 case XFS_IOC_FSBULKSTAT:
1357 case XFS_IOC_FSINUMBERS:
1358 return xfs_ioc_bulkstat(mp, cmd, arg);
1360 case XFS_IOC_FSGEOMETRY_V1:
1361 return xfs_ioc_fsgeometry_v1(mp, arg);
1363 case XFS_IOC_FSGEOMETRY:
1364 return xfs_ioc_fsgeometry(mp, arg);
1366 case XFS_IOC_GETVERSION:
1367 return put_user(inode->i_generation, (int __user *)arg);
1369 case XFS_IOC_FSGETXATTR:
1370 return xfs_ioc_fsgetxattr(ip, 0, arg);
1371 case XFS_IOC_FSGETXATTRA:
1372 return xfs_ioc_fsgetxattr(ip, 1, arg);
1373 case XFS_IOC_FSSETXATTR:
1374 return xfs_ioc_fssetxattr(ip, filp, arg);
1375 case XFS_IOC_GETXFLAGS:
1376 return xfs_ioc_getxflags(ip, arg);
1377 case XFS_IOC_SETXFLAGS:
1378 return xfs_ioc_setxflags(ip, filp, arg);
1380 case XFS_IOC_FSSETDM: {
1381 struct fsdmidata dmi;
1383 if (copy_from_user(&dmi, arg, sizeof(dmi)))
1384 return -XFS_ERROR(EFAULT);
1386 error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
1391 case XFS_IOC_GETBMAP:
1392 case XFS_IOC_GETBMAPA:
1393 return xfs_ioc_getbmap(ip, ioflags, cmd, arg);
1395 case XFS_IOC_GETBMAPX:
1396 return xfs_ioc_getbmapx(ip, arg);
1398 case XFS_IOC_FD_TO_HANDLE:
1399 case XFS_IOC_PATH_TO_HANDLE:
1400 case XFS_IOC_PATH_TO_FSHANDLE: {
1401 xfs_fsop_handlereq_t hreq;
1403 if (copy_from_user(&hreq, arg, sizeof(hreq)))
1404 return -XFS_ERROR(EFAULT);
1405 return xfs_find_handle(cmd, &hreq);
1407 case XFS_IOC_OPEN_BY_HANDLE: {
1408 xfs_fsop_handlereq_t hreq;
1410 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1411 return -XFS_ERROR(EFAULT);
1412 return xfs_open_by_handle(filp, &hreq);
1414 case XFS_IOC_FSSETDM_BY_HANDLE:
1415 return xfs_fssetdm_by_handle(filp, arg);
1417 case XFS_IOC_READLINK_BY_HANDLE: {
1418 xfs_fsop_handlereq_t hreq;
1420 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
1421 return -XFS_ERROR(EFAULT);
1422 return xfs_readlink_by_handle(filp, &hreq);
1424 case XFS_IOC_ATTRLIST_BY_HANDLE:
1425 return xfs_attrlist_by_handle(filp, arg);
1427 case XFS_IOC_ATTRMULTI_BY_HANDLE:
1428 return xfs_attrmulti_by_handle(filp, arg);
1430 case XFS_IOC_SWAPEXT: {
1431 struct xfs_swapext sxp;
1433 if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t)))
1434 return -XFS_ERROR(EFAULT);
1435 error = xfs_swapext(&sxp);
1439 case XFS_IOC_FSCOUNTS: {
1440 xfs_fsop_counts_t out;
1442 error = xfs_fs_counts(mp, &out);
1446 if (copy_to_user(arg, &out, sizeof(out)))
1447 return -XFS_ERROR(EFAULT);
1451 case XFS_IOC_SET_RESBLKS: {
1452 xfs_fsop_resblks_t inout;
1455 if (!capable(CAP_SYS_ADMIN))
1458 if (mp->m_flags & XFS_MOUNT_RDONLY)
1459 return -XFS_ERROR(EROFS);
1461 if (copy_from_user(&inout, arg, sizeof(inout)))
1462 return -XFS_ERROR(EFAULT);
1464 /* input parameter is passed in resblks field of structure */
1466 error = xfs_reserve_blocks(mp, &in, &inout);
1470 if (copy_to_user(arg, &inout, sizeof(inout)))
1471 return -XFS_ERROR(EFAULT);
1475 case XFS_IOC_GET_RESBLKS: {
1476 xfs_fsop_resblks_t out;
1478 if (!capable(CAP_SYS_ADMIN))
1481 error = xfs_reserve_blocks(mp, NULL, &out);
1485 if (copy_to_user(arg, &out, sizeof(out)))
1486 return -XFS_ERROR(EFAULT);
1491 case XFS_IOC_FSGROWFSDATA: {
1492 xfs_growfs_data_t in;
1494 if (copy_from_user(&in, arg, sizeof(in)))
1495 return -XFS_ERROR(EFAULT);
1497 error = xfs_growfs_data(mp, &in);
1501 case XFS_IOC_FSGROWFSLOG: {
1502 xfs_growfs_log_t in;
1504 if (copy_from_user(&in, arg, sizeof(in)))
1505 return -XFS_ERROR(EFAULT);
1507 error = xfs_growfs_log(mp, &in);
1511 case XFS_IOC_FSGROWFSRT: {
1514 if (copy_from_user(&in, arg, sizeof(in)))
1515 return -XFS_ERROR(EFAULT);
1517 error = xfs_growfs_rt(mp, &in);
1521 case XFS_IOC_GOINGDOWN: {
1524 if (!capable(CAP_SYS_ADMIN))
1527 if (get_user(in, (__uint32_t __user *)arg))
1528 return -XFS_ERROR(EFAULT);
1530 error = xfs_fs_goingdown(mp, in);
1534 case XFS_IOC_ERROR_INJECTION: {
1535 xfs_error_injection_t in;
1537 if (!capable(CAP_SYS_ADMIN))
1540 if (copy_from_user(&in, arg, sizeof(in)))
1541 return -XFS_ERROR(EFAULT);
1543 error = xfs_errortag_add(in.errtag, mp);
1547 case XFS_IOC_ERROR_CLEARALL:
1548 if (!capable(CAP_SYS_ADMIN))
1551 error = xfs_errortag_clearall(mp, 1);