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"
28 #include "xfs_alloc.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dir2_sf.h"
37 #include "xfs_dinode.h"
38 #include "xfs_inode.h"
39 #include "xfs_btree.h"
40 #include "xfs_ialloc.h"
41 #include "xfs_rtalloc.h"
42 #include "xfs_itable.h"
43 #include "xfs_error.h"
50 #include "xfs_buf_item.h"
51 #include "xfs_utils.h"
52 #include "xfs_dfrag.h"
53 #include "xfs_fsops.h"
55 #include <linux/dcache.h>
56 #include <linux/mount.h>
57 #include <linux/namei.h>
58 #include <linux/pagemap.h>
61 * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to
62 * a file or fs handle.
64 * XFS_IOC_PATH_TO_FSHANDLE
65 * returns fs handle for a mount point or path within that mount point
66 * XFS_IOC_FD_TO_HANDLE
67 * returns full handle for a FD opened in user space
68 * XFS_IOC_PATH_TO_HANDLE
69 * returns full handle for a path
78 xfs_fsop_handlereq_t hreq;
82 if (copy_from_user(&hreq, arg, sizeof(hreq)))
83 return -XFS_ERROR(EFAULT);
85 memset((char *)&handle, 0, sizeof(handle));
88 case XFS_IOC_PATH_TO_FSHANDLE:
89 case XFS_IOC_PATH_TO_HANDLE: {
93 error = user_path_walk_link((const char __user *)hreq.path, &nd);
98 ASSERT(nd.dentry->d_inode);
99 inode = igrab(nd.dentry->d_inode);
104 case XFS_IOC_FD_TO_HANDLE: {
107 file = fget(hreq.fd);
111 ASSERT(file->f_dentry);
112 ASSERT(file->f_dentry->d_inode);
113 inode = igrab(file->f_dentry->d_inode);
120 return -XFS_ERROR(EINVAL);
123 if (inode->i_sb->s_magic != XFS_SB_MAGIC) {
124 /* we're not in XFS anymore, Toto */
126 return -XFS_ERROR(EINVAL);
129 switch (inode->i_mode & S_IFMT) {
136 return -XFS_ERROR(EBADF);
139 /* we need the vnode */
140 vp = LINVFS_GET_VP(inode);
142 /* now we can grab the fsid */
143 memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t));
144 hsize = sizeof(xfs_fsid_t);
146 if (cmd != XFS_IOC_PATH_TO_FSHANDLE) {
151 /* need to get access to the xfs_inode to read the generation */
152 bhv = vn_bhv_lookup_unlocked(VN_BHV_HEAD(vp), &xfs_vnodeops);
154 ip = XFS_BHVTOI(bhv);
156 lock_mode = xfs_ilock_map_shared(ip);
158 /* fill in fid section of handle from inode */
159 handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) -
160 sizeof(handle.ha_fid.xfs_fid_len);
161 handle.ha_fid.xfs_fid_pad = 0;
162 handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen;
163 handle.ha_fid.xfs_fid_ino = ip->i_ino;
165 xfs_iunlock_map_shared(ip, lock_mode);
167 hsize = XFS_HSIZE(handle);
170 /* now copy our handle into the user buffer & write out the size */
171 if (copy_to_user(hreq.ohandle, &handle, hsize) ||
172 copy_to_user(hreq.ohandlen, &hsize, sizeof(__s32))) {
174 return -XFS_ERROR(EFAULT);
183 * Convert userspace handle data into vnode (and inode).
184 * We [ab]use the fact that all the fsop_handlereq ioctl calls
185 * have a data structure argument whose first component is always
186 * a xfs_fsop_handlereq_t, so we can cast to and from this type.
187 * This allows us to optimise the copy_from_user calls and gives
188 * a handy, shared routine.
190 * If no error, caller must always VN_RELE the returned vp.
193 xfs_vget_fsop_handlereq(
195 struct inode *parinode, /* parent inode pointer */
196 xfs_fsop_handlereq_t *hreq,
198 struct inode **inode)
203 xfs_handle_t *handlep;
206 struct inode *inodep;
213 * Only allow handle opens under a directory.
215 if (!S_ISDIR(parinode->i_mode))
216 return XFS_ERROR(ENOTDIR);
218 hanp = hreq->ihandle;
219 hlen = hreq->ihandlen;
222 if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep))
223 return XFS_ERROR(EINVAL);
224 if (copy_from_user(handlep, hanp, hlen))
225 return XFS_ERROR(EFAULT);
226 if (hlen < sizeof(*handlep))
227 memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
228 if (hlen > sizeof(handlep->ha_fsid)) {
229 if (handlep->ha_fid.xfs_fid_len !=
230 (hlen - sizeof(handlep->ha_fsid)
231 - sizeof(handlep->ha_fid.xfs_fid_len))
232 || handlep->ha_fid.xfs_fid_pad)
233 return XFS_ERROR(EINVAL);
237 * Crack the handle, obtain the inode # & generation #
239 xfid = (struct xfs_fid *)&handlep->ha_fid;
240 if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) {
241 ino = xfid->xfs_fid_ino;
242 igen = xfid->xfs_fid_gen;
244 return XFS_ERROR(EINVAL);
248 * Get the XFS inode, building a vnode to go with it.
250 error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
254 return XFS_ERROR(EIO);
255 if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
256 xfs_iput_new(ip, XFS_ILOCK_SHARED);
257 return XFS_ERROR(ENOENT);
261 inodep = LINVFS_GET_IP(vpp);
262 xfs_iunlock(ip, XFS_ILOCK_SHARED);
273 struct file *parfilp,
274 struct inode *parinode)
281 struct dentry *dentry;
283 xfs_fsop_handlereq_t hreq;
285 if (!capable(CAP_SYS_ADMIN))
286 return -XFS_ERROR(EPERM);
287 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
288 return -XFS_ERROR(EFAULT);
290 error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode);
294 /* Restrict xfs_open_by_handle to directories & regular files. */
295 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) {
297 return -XFS_ERROR(EINVAL);
300 #if BITS_PER_LONG != 32
301 hreq.oflags |= O_LARGEFILE;
303 /* Put open permission in namei format. */
304 permflag = hreq.oflags;
305 if ((permflag+1) & O_ACCMODE)
307 if (permflag & O_TRUNC)
310 if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) &&
311 (permflag & FMODE_WRITE) && IS_APPEND(inode)) {
313 return -XFS_ERROR(EPERM);
316 if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) {
318 return -XFS_ERROR(EACCES);
321 /* Can't write directories. */
322 if ( S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) {
324 return -XFS_ERROR(EISDIR);
327 if ((new_fd = get_unused_fd()) < 0) {
332 dentry = d_alloc_anon(inode);
333 if (dentry == NULL) {
335 put_unused_fd(new_fd);
336 return -XFS_ERROR(ENOMEM);
339 /* Ensure umount returns EBUSY on umounts while this file is open. */
340 mntget(parfilp->f_vfsmnt);
342 /* Create file pointer. */
343 filp = dentry_open(dentry, parfilp->f_vfsmnt, hreq.oflags);
345 put_unused_fd(new_fd);
346 return -XFS_ERROR(-PTR_ERR(filp));
348 if (inode->i_mode & S_IFREG)
349 filp->f_op = &linvfs_invis_file_operations;
351 fd_install(new_fd, filp);
356 xfs_readlink_by_handle(
359 struct file *parfilp,
360 struct inode *parinode)
366 xfs_fsop_handlereq_t hreq;
370 if (!capable(CAP_SYS_ADMIN))
371 return -XFS_ERROR(EPERM);
372 if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
373 return -XFS_ERROR(EFAULT);
375 error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode);
379 /* Restrict this handle operation to symlinks only. */
380 if (!S_ISLNK(inode->i_mode)) {
382 return -XFS_ERROR(EINVAL);
385 if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) {
387 return -XFS_ERROR(EFAULT);
390 aiov.iov_base = hreq.ohandle;
392 auio.uio_iov = &aiov;
395 auio.uio_segflg = UIO_USERSPACE;
396 auio.uio_resid = olen;
398 VOP_READLINK(vp, &auio, IO_INVIS, NULL, error);
401 return (olen - auio.uio_resid);
405 xfs_fssetdm_by_handle(
408 struct file *parfilp,
409 struct inode *parinode)
412 struct fsdmidata fsd;
413 xfs_fsop_setdm_handlereq_t dmhreq;
418 if (!capable(CAP_MKNOD))
419 return -XFS_ERROR(EPERM);
420 if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
421 return -XFS_ERROR(EFAULT);
423 error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode);
427 if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
429 return -XFS_ERROR(EPERM);
432 if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
434 return -XFS_ERROR(EFAULT);
437 bdp = bhv_base_unlocked(VN_BHV_HEAD(vp));
438 error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL);
447 xfs_attrlist_by_handle(
450 struct file *parfilp,
451 struct inode *parinode)
454 attrlist_cursor_kern_t *cursor;
455 xfs_fsop_attrlist_handlereq_t al_hreq;
460 if (!capable(CAP_SYS_ADMIN))
461 return -XFS_ERROR(EPERM);
462 if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
463 return -XFS_ERROR(EFAULT);
464 if (al_hreq.buflen > XATTR_LIST_MAX)
465 return -XFS_ERROR(EINVAL);
467 error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq,
472 kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
476 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
477 VOP_ATTR_LIST(vp, kbuf, al_hreq.buflen, al_hreq.flags,
478 cursor, NULL, error);
482 if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
494 xfs_attrmulti_attr_get(
504 if (*len > XATTR_SIZE_MAX)
506 kbuf = kmalloc(*len, GFP_KERNEL);
510 VOP_ATTR_GET(vp, name, kbuf, len, flags, NULL, error);
514 if (copy_to_user(ubuf, kbuf, *len))
523 xfs_attrmulti_attr_set(
526 const char __user *ubuf,
533 if (IS_RDONLY(&vp->v_inode))
535 if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode))
537 if (len > XATTR_SIZE_MAX)
540 kbuf = kmalloc(len, GFP_KERNEL);
544 if (copy_from_user(kbuf, ubuf, len))
547 VOP_ATTR_SET(vp, name, kbuf, len, flags, NULL, error);
555 xfs_attrmulti_attr_remove(
563 if (IS_RDONLY(&vp->v_inode))
565 if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode))
568 VOP_ATTR_REMOVE(vp, name, flags, NULL, error);
573 xfs_attrmulti_by_handle(
576 struct file *parfilp,
577 struct inode *parinode)
580 xfs_attr_multiop_t *ops;
581 xfs_fsop_attrmulti_handlereq_t am_hreq;
584 unsigned int i, size;
587 if (!capable(CAP_SYS_ADMIN))
588 return -XFS_ERROR(EPERM);
589 if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
590 return -XFS_ERROR(EFAULT);
592 error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode);
597 size = am_hreq.opcount * sizeof(attr_multiop_t);
598 if (!size || size > 16 * PAGE_SIZE)
602 ops = kmalloc(size, GFP_KERNEL);
607 if (copy_from_user(ops, am_hreq.ops, size))
610 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
616 for (i = 0; i < am_hreq.opcount; i++) {
617 ops[i].am_error = strncpy_from_user(attr_name,
618 ops[i].am_attrname, MAXNAMELEN);
619 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
621 if (ops[i].am_error < 0)
624 switch (ops[i].am_opcode) {
626 ops[i].am_error = xfs_attrmulti_attr_get(vp,
627 attr_name, ops[i].am_attrvalue,
628 &ops[i].am_length, ops[i].am_flags);
631 ops[i].am_error = xfs_attrmulti_attr_set(vp,
632 attr_name, ops[i].am_attrvalue,
633 ops[i].am_length, ops[i].am_flags);
636 ops[i].am_error = xfs_attrmulti_attr_remove(vp,
637 attr_name, ops[i].am_flags);
640 ops[i].am_error = EINVAL;
644 if (copy_to_user(am_hreq.ops, ops, size))
645 error = XFS_ERROR(EFAULT);
656 /* prototypes for a few of the stack-hungry cases that have
657 * their own functions. Functions are defined after their use
658 * so gcc doesn't get fancy and inline them with -03 */
676 xfs_ioc_fsgeometry_v1(
720 vp = LINVFS_GET_VP(inode);
722 vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address);
724 ip = XFS_BHVTOI(bdp);
729 case XFS_IOC_ALLOCSP:
732 case XFS_IOC_UNRESVSP:
733 case XFS_IOC_ALLOCSP64:
734 case XFS_IOC_FREESP64:
735 case XFS_IOC_RESVSP64:
736 case XFS_IOC_UNRESVSP64:
738 * Only allow the sys admin to reserve space unless
739 * unwritten extents are enabled.
741 if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) &&
742 !capable(CAP_SYS_ADMIN))
745 return xfs_ioc_space(bdp, vp, filp, ioflags, cmd, arg);
747 case XFS_IOC_DIOINFO: {
749 xfs_buftarg_t *target =
750 (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
751 mp->m_rtdev_targp : mp->m_ddev_targp;
753 da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
754 da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
756 if (copy_to_user(arg, &da, sizeof(da)))
757 return -XFS_ERROR(EFAULT);
761 case XFS_IOC_FSBULKSTAT_SINGLE:
762 case XFS_IOC_FSBULKSTAT:
763 case XFS_IOC_FSINUMBERS:
764 return xfs_ioc_bulkstat(mp, cmd, arg);
766 case XFS_IOC_FSGEOMETRY_V1:
767 return xfs_ioc_fsgeometry_v1(mp, arg);
769 case XFS_IOC_FSGEOMETRY:
770 return xfs_ioc_fsgeometry(mp, arg);
772 case XFS_IOC_GETVERSION:
773 case XFS_IOC_GETXFLAGS:
774 case XFS_IOC_SETXFLAGS:
775 case XFS_IOC_FSGETXATTR:
776 case XFS_IOC_FSSETXATTR:
777 case XFS_IOC_FSGETXATTRA:
778 return xfs_ioc_xattr(vp, ip, filp, cmd, arg);
780 case XFS_IOC_FSSETDM: {
781 struct fsdmidata dmi;
783 if (copy_from_user(&dmi, arg, sizeof(dmi)))
784 return -XFS_ERROR(EFAULT);
786 error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate,
791 case XFS_IOC_GETBMAP:
792 case XFS_IOC_GETBMAPA:
793 return xfs_ioc_getbmap(bdp, filp, ioflags, cmd, arg);
795 case XFS_IOC_GETBMAPX:
796 return xfs_ioc_getbmapx(bdp, arg);
798 case XFS_IOC_FD_TO_HANDLE:
799 case XFS_IOC_PATH_TO_HANDLE:
800 case XFS_IOC_PATH_TO_FSHANDLE:
801 return xfs_find_handle(cmd, arg);
803 case XFS_IOC_OPEN_BY_HANDLE:
804 return xfs_open_by_handle(mp, arg, filp, inode);
806 case XFS_IOC_FSSETDM_BY_HANDLE:
807 return xfs_fssetdm_by_handle(mp, arg, filp, inode);
809 case XFS_IOC_READLINK_BY_HANDLE:
810 return xfs_readlink_by_handle(mp, arg, filp, inode);
812 case XFS_IOC_ATTRLIST_BY_HANDLE:
813 return xfs_attrlist_by_handle(mp, arg, filp, inode);
815 case XFS_IOC_ATTRMULTI_BY_HANDLE:
816 return xfs_attrmulti_by_handle(mp, arg, filp, inode);
818 case XFS_IOC_SWAPEXT: {
819 error = xfs_swapext((struct xfs_swapext __user *)arg);
823 case XFS_IOC_FSCOUNTS: {
824 xfs_fsop_counts_t out;
826 error = xfs_fs_counts(mp, &out);
830 if (copy_to_user(arg, &out, sizeof(out)))
831 return -XFS_ERROR(EFAULT);
835 case XFS_IOC_SET_RESBLKS: {
836 xfs_fsop_resblks_t inout;
839 if (!capable(CAP_SYS_ADMIN))
842 if (copy_from_user(&inout, arg, sizeof(inout)))
843 return -XFS_ERROR(EFAULT);
845 /* input parameter is passed in resblks field of structure */
847 error = xfs_reserve_blocks(mp, &in, &inout);
851 if (copy_to_user(arg, &inout, sizeof(inout)))
852 return -XFS_ERROR(EFAULT);
856 case XFS_IOC_GET_RESBLKS: {
857 xfs_fsop_resblks_t out;
859 if (!capable(CAP_SYS_ADMIN))
862 error = xfs_reserve_blocks(mp, NULL, &out);
866 if (copy_to_user(arg, &out, sizeof(out)))
867 return -XFS_ERROR(EFAULT);
872 case XFS_IOC_FSGROWFSDATA: {
873 xfs_growfs_data_t in;
875 if (!capable(CAP_SYS_ADMIN))
878 if (copy_from_user(&in, arg, sizeof(in)))
879 return -XFS_ERROR(EFAULT);
881 error = xfs_growfs_data(mp, &in);
885 case XFS_IOC_FSGROWFSLOG: {
888 if (!capable(CAP_SYS_ADMIN))
891 if (copy_from_user(&in, arg, sizeof(in)))
892 return -XFS_ERROR(EFAULT);
894 error = xfs_growfs_log(mp, &in);
898 case XFS_IOC_FSGROWFSRT: {
901 if (!capable(CAP_SYS_ADMIN))
904 if (copy_from_user(&in, arg, sizeof(in)))
905 return -XFS_ERROR(EFAULT);
907 error = xfs_growfs_rt(mp, &in);
912 if (!capable(CAP_SYS_ADMIN))
915 if (inode->i_sb->s_frozen == SB_UNFROZEN)
916 freeze_bdev(inode->i_sb->s_bdev);
920 if (!capable(CAP_SYS_ADMIN))
922 if (inode->i_sb->s_frozen != SB_UNFROZEN)
923 thaw_bdev(inode->i_sb->s_bdev, inode->i_sb);
926 case XFS_IOC_GOINGDOWN: {
929 if (!capable(CAP_SYS_ADMIN))
932 if (get_user(in, (__uint32_t __user *)arg))
933 return -XFS_ERROR(EFAULT);
935 error = xfs_fs_goingdown(mp, in);
939 case XFS_IOC_ERROR_INJECTION: {
940 xfs_error_injection_t in;
942 if (!capable(CAP_SYS_ADMIN))
945 if (copy_from_user(&in, arg, sizeof(in)))
946 return -XFS_ERROR(EFAULT);
948 error = xfs_errortag_add(in.errtag, mp);
952 case XFS_IOC_ERROR_CLEARALL:
953 if (!capable(CAP_SYS_ADMIN))
956 error = xfs_errortag_clearall(mp);
977 if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND))
978 return -XFS_ERROR(EPERM);
980 if (!(filp->f_mode & FMODE_WRITE))
981 return -XFS_ERROR(EBADF);
984 return -XFS_ERROR(EINVAL);
986 if (copy_from_user(&bf, arg, sizeof(bf)))
987 return -XFS_ERROR(EFAULT);
989 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
990 attr_flags |= ATTR_NONBLOCK;
991 if (ioflags & IO_INVIS)
992 attr_flags |= ATTR_DMI;
994 error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos,
1005 xfs_fsop_bulkreq_t bulkreq;
1006 int count; /* # of records returned */
1007 xfs_ino_t inlast; /* last inode number */
1011 /* done = 1 if there are more stats to get and if bulkstat */
1012 /* should be called again (unused here, but used in dmapi) */
1014 if (!capable(CAP_SYS_ADMIN))
1017 if (XFS_FORCED_SHUTDOWN(mp))
1018 return -XFS_ERROR(EIO);
1020 if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
1021 return -XFS_ERROR(EFAULT);
1023 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
1024 return -XFS_ERROR(EFAULT);
1026 if ((count = bulkreq.icount) <= 0)
1027 return -XFS_ERROR(EINVAL);
1029 if (cmd == XFS_IOC_FSINUMBERS)
1030 error = xfs_inumbers(mp, &inlast, &count,
1032 else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
1033 error = xfs_bulkstat_single(mp, &inlast,
1034 bulkreq.ubuffer, &done);
1035 else { /* XFS_IOC_FSBULKSTAT */
1036 if (count == 1 && inlast != 0) {
1038 error = xfs_bulkstat_single(mp, &inlast,
1039 bulkreq.ubuffer, &done);
1041 error = xfs_bulkstat(mp, &inlast, &count,
1042 (bulkstat_one_pf)xfs_bulkstat_one, NULL,
1043 sizeof(xfs_bstat_t), bulkreq.ubuffer,
1044 BULKSTAT_FG_QUICK, &done);
1051 if (bulkreq.ocount != NULL) {
1052 if (copy_to_user(bulkreq.lastip, &inlast,
1054 return -XFS_ERROR(EFAULT);
1056 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
1057 return -XFS_ERROR(EFAULT);
1064 xfs_ioc_fsgeometry_v1(
1068 xfs_fsop_geom_v1_t fsgeo;
1071 error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3);
1075 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
1076 return -XFS_ERROR(EFAULT);
1085 xfs_fsop_geom_t fsgeo;
1088 error = xfs_fs_geometry(mp, &fsgeo, 4);
1092 if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
1093 return -XFS_ERROR(EFAULT);
1098 * Linux extended inode flags interface.
1100 #define LINUX_XFLAG_SYNC 0x00000008 /* Synchronous updates */
1101 #define LINUX_XFLAG_IMMUTABLE 0x00000010 /* Immutable file */
1102 #define LINUX_XFLAG_APPEND 0x00000020 /* writes to file may only append */
1103 #define LINUX_XFLAG_NODUMP 0x00000040 /* do not dump file */
1104 #define LINUX_XFLAG_NOATIME 0x00000080 /* do not update atime */
1107 xfs_merge_ioc_xflags(
1111 unsigned int xflags = start;
1113 if (flags & LINUX_XFLAG_IMMUTABLE)
1114 xflags |= XFS_XFLAG_IMMUTABLE;
1116 xflags &= ~XFS_XFLAG_IMMUTABLE;
1117 if (flags & LINUX_XFLAG_APPEND)
1118 xflags |= XFS_XFLAG_APPEND;
1120 xflags &= ~XFS_XFLAG_APPEND;
1121 if (flags & LINUX_XFLAG_SYNC)
1122 xflags |= XFS_XFLAG_SYNC;
1124 xflags &= ~XFS_XFLAG_SYNC;
1125 if (flags & LINUX_XFLAG_NOATIME)
1126 xflags |= XFS_XFLAG_NOATIME;
1128 xflags &= ~XFS_XFLAG_NOATIME;
1129 if (flags & LINUX_XFLAG_NODUMP)
1130 xflags |= XFS_XFLAG_NODUMP;
1132 xflags &= ~XFS_XFLAG_NODUMP;
1139 __uint16_t di_flags)
1141 unsigned int flags = 0;
1143 if (di_flags & XFS_DIFLAG_IMMUTABLE)
1144 flags |= LINUX_XFLAG_IMMUTABLE;
1145 if (di_flags & XFS_DIFLAG_APPEND)
1146 flags |= LINUX_XFLAG_APPEND;
1147 if (di_flags & XFS_DIFLAG_SYNC)
1148 flags |= LINUX_XFLAG_SYNC;
1149 if (di_flags & XFS_DIFLAG_NOATIME)
1150 flags |= LINUX_XFLAG_NOATIME;
1151 if (di_flags & XFS_DIFLAG_NODUMP)
1152 flags |= LINUX_XFLAG_NODUMP;
1171 case XFS_IOC_FSGETXATTR: {
1172 va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \
1173 XFS_AT_NEXTENTS | XFS_AT_PROJID;
1174 VOP_GETATTR(vp, &va, 0, NULL, error);
1178 fa.fsx_xflags = va.va_xflags;
1179 fa.fsx_extsize = va.va_extsize;
1180 fa.fsx_nextents = va.va_nextents;
1181 fa.fsx_projid = va.va_projid;
1183 if (copy_to_user(arg, &fa, sizeof(fa)))
1184 return -XFS_ERROR(EFAULT);
1188 case XFS_IOC_FSSETXATTR: {
1189 if (copy_from_user(&fa, arg, sizeof(fa)))
1190 return -XFS_ERROR(EFAULT);
1193 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1194 attr_flags |= ATTR_NONBLOCK;
1196 va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID;
1197 va.va_xflags = fa.fsx_xflags;
1198 va.va_extsize = fa.fsx_extsize;
1199 va.va_projid = fa.fsx_projid;
1201 VOP_SETATTR(vp, &va, attr_flags, NULL, error);
1203 vn_revalidate(vp); /* update Linux inode flags */
1207 case XFS_IOC_FSGETXATTRA: {
1208 va.va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \
1209 XFS_AT_ANEXTENTS | XFS_AT_PROJID;
1210 VOP_GETATTR(vp, &va, 0, NULL, error);
1214 fa.fsx_xflags = va.va_xflags;
1215 fa.fsx_extsize = va.va_extsize;
1216 fa.fsx_nextents = va.va_anextents;
1217 fa.fsx_projid = va.va_projid;
1219 if (copy_to_user(arg, &fa, sizeof(fa)))
1220 return -XFS_ERROR(EFAULT);
1224 case XFS_IOC_GETXFLAGS: {
1225 flags = xfs_di2lxflags(ip->i_d.di_flags);
1226 if (copy_to_user(arg, &flags, sizeof(flags)))
1227 return -XFS_ERROR(EFAULT);
1231 case XFS_IOC_SETXFLAGS: {
1232 if (copy_from_user(&flags, arg, sizeof(flags)))
1233 return -XFS_ERROR(EFAULT);
1235 if (flags & ~(LINUX_XFLAG_IMMUTABLE | LINUX_XFLAG_APPEND | \
1236 LINUX_XFLAG_NOATIME | LINUX_XFLAG_NODUMP | \
1238 return -XFS_ERROR(EOPNOTSUPP);
1241 if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
1242 attr_flags |= ATTR_NONBLOCK;
1244 va.va_mask = XFS_AT_XFLAGS;
1245 va.va_xflags = xfs_merge_ioc_xflags(flags,
1248 VOP_SETATTR(vp, &va, attr_flags, NULL, error);
1250 vn_revalidate(vp); /* update Linux inode flags */
1254 case XFS_IOC_GETVERSION: {
1255 flags = LINVFS_GET_IP(vp)->i_generation;
1256 if (copy_to_user(arg, &flags, sizeof(flags)))
1257 return -XFS_ERROR(EFAULT);
1278 if (copy_from_user(&bm, arg, sizeof(bm)))
1279 return -XFS_ERROR(EFAULT);
1281 if (bm.bmv_count < 2)
1282 return -XFS_ERROR(EINVAL);
1284 iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
1285 if (ioflags & IO_INVIS)
1286 iflags |= BMV_IF_NO_DMAPI_READ;
1288 error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags);
1292 if (copy_to_user(arg, &bm, sizeof(bm)))
1293 return -XFS_ERROR(EFAULT);
1302 struct getbmapx bmx;
1307 if (copy_from_user(&bmx, arg, sizeof(bmx)))
1308 return -XFS_ERROR(EFAULT);
1310 if (bmx.bmv_count < 2)
1311 return -XFS_ERROR(EINVAL);
1314 * Map input getbmapx structure to a getbmap
1315 * structure for xfs_getbmap.
1317 GETBMAP_CONVERT(bmx, bm);
1319 iflags = bmx.bmv_iflags;
1321 if (iflags & (~BMV_IF_VALID))
1322 return -XFS_ERROR(EINVAL);
1324 iflags |= BMV_IF_EXTENDED;
1326 error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags);
1330 GETBMAP_CONVERT(bm, bmx);
1332 if (copy_to_user(arg, &bmx, sizeof(bmx)))
1333 return -XFS_ERROR(EFAULT);