/*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2006 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
#include "xfs.h"
-#include "xfs_macros.h"
+#include "xfs_fs.h"
#include "xfs_types.h"
-#include "xfs_inum.h"
+#include "xfs_bit.h"
#include "xfs_log.h"
+#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
-#include "xfs_dir.h"
+#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
-#include "xfs_ag.h"
-#include "xfs_alloc_btree.h"
#include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
#include "xfs_dir2_sf.h"
+#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
-#include "xfs_inode_item.h"
#include "xfs_inode.h"
+#include "xfs_inode_item.h"
#include "xfs_bmap.h"
+#include "xfs_btree.h"
#include "xfs_ialloc.h"
#include "xfs_itable.h"
#include "xfs_dfrag.h"
#include "xfs_error.h"
-#include "xfs_mac.h"
#include "xfs_rw.h"
+#include "xfs_vnodeops.h"
/*
* Syssgi interface for swapext
*/
int
xfs_swapext(
- xfs_swapext_t __user *sxp)
+ xfs_swapext_t *sxp)
{
- xfs_swapext_t sx;
- xfs_inode_t *ip=NULL, *tip=NULL, *ips[2];
- xfs_trans_t *tp;
- xfs_mount_t *mp;
- xfs_bstat_t *sbp;
- struct file *fp = NULL, *tfp = NULL;
- vnode_t *vp, *tvp;
- bhv_desc_t *bdp, *tbdp;
- vn_bhv_head_t *bhp, *tbhp;
- uint lock_flags=0;
- int ilf_fields, tilf_fields;
+ xfs_inode_t *ip, *tip;
+ struct file *file, *target_file;
int error = 0;
- xfs_ifork_t tempif, *ifp, *tifp;
- __uint64_t tmp;
- int aforkblks = 0;
- int taforkblks = 0;
- int locked = 0;
-
- if (copy_from_user(&sx, sxp, sizeof(sx)))
- return XFS_ERROR(EFAULT);
/* Pull information for the target fd */
- if (((fp = fget((int)sx.sx_fdtarget)) == NULL) ||
- ((vp = LINVFS_GET_VP(fp->f_dentry->d_inode)) == NULL)) {
+ file = fget((int)sxp->sx_fdtarget);
+ if (!file) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out;
}
- bhp = VN_BHV_HEAD(vp);
- bdp = vn_bhv_lookup(bhp, &xfs_vnodeops);
- if (bdp == NULL) {
+ if (!(file->f_mode & FMODE_WRITE) || (file->f_flags & O_APPEND)) {
error = XFS_ERROR(EBADF);
- goto error0;
- } else {
- ip = XFS_BHVTOI(bdp);
+ goto out_put_file;
}
- if (((tfp = fget((int)sx.sx_fdtmp)) == NULL) ||
- ((tvp = LINVFS_GET_VP(tfp->f_dentry->d_inode)) == NULL)) {
+ target_file = fget((int)sxp->sx_fdtmp);
+ if (!target_file) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_put_file;
}
- tbhp = VN_BHV_HEAD(tvp);
- tbdp = vn_bhv_lookup(tbhp, &xfs_vnodeops);
- if (tbdp == NULL) {
+ if (!(target_file->f_mode & FMODE_WRITE) ||
+ (target_file->f_flags & O_APPEND)) {
error = XFS_ERROR(EBADF);
- goto error0;
- } else {
- tip = XFS_BHVTOI(tbdp);
+ goto out_put_target_file;
}
+ if (IS_SWAPFILE(file->f_path.dentry->d_inode) ||
+ IS_SWAPFILE(target_file->f_path.dentry->d_inode)) {
+ error = XFS_ERROR(EINVAL);
+ goto out_put_target_file;
+ }
+
+ ip = XFS_I(file->f_path.dentry->d_inode);
+ tip = XFS_I(target_file->f_path.dentry->d_inode);
+
if (ip->i_mount != tip->i_mount) {
- error = XFS_ERROR(EINVAL);
- goto error0;
+ error = XFS_ERROR(EINVAL);
+ goto out_put_target_file;
}
if (ip->i_ino == tip->i_ino) {
- error = XFS_ERROR(EINVAL);
- goto error0;
+ error = XFS_ERROR(EINVAL);
+ goto out_put_target_file;
}
- mp = ip->i_mount;
+ if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
+ error = XFS_ERROR(EIO);
+ goto out_put_target_file;
+ }
- sbp = &sx.sx_stat;
+ error = xfs_swap_extents(ip, tip, sxp);
- if (XFS_FORCED_SHUTDOWN(mp)) {
- error = XFS_ERROR(EIO);
- goto error0;
- }
+ out_put_target_file:
+ fput(target_file);
+ out_put_file:
+ fput(file);
+ out:
+ return error;
+}
+
+int
+xfs_swap_extents(
+ xfs_inode_t *ip,
+ xfs_inode_t *tip,
+ xfs_swapext_t *sxp)
+{
+ xfs_mount_t *mp;
+ xfs_trans_t *tp;
+ xfs_bstat_t *sbp = &sxp->sx_stat;
+ xfs_ifork_t *tempifp, *ifp, *tifp;
+ int ilf_fields, tilf_fields;
+ int error = 0;
+ int aforkblks = 0;
+ int taforkblks = 0;
+ __uint64_t tmp;
- locked = 1;
+ mp = ip->i_mount;
- /* Lock in i_ino order */
- if (ip->i_ino < tip->i_ino) {
- ips[0] = ip;
- ips[1] = tip;
- } else {
- ips[0] = tip;
- ips[1] = ip;
+ tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL);
+ if (!tempifp) {
+ error = XFS_ERROR(ENOMEM);
+ goto out;
}
- lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL;
- xfs_lock_inodes(ips, 2, 0, lock_flags);
- /* Check permissions */
- error = xfs_iaccess(ip, S_IWUSR, NULL);
- if (error)
- goto error0;
+ sbp = &sxp->sx_stat;
- error = xfs_iaccess(tip, S_IWUSR, NULL);
- if (error)
- goto error0;
+ /*
+ * we have to do two separate lock calls here to keep lockdep
+ * happy. If we try to get all the locks in one call, lock will
+ * report false positives when we drop the ILOCK and regain them
+ * below.
+ */
+ xfs_lock_two_inodes(ip, tip, XFS_IOLOCK_EXCL);
+ xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL);
/* Verify that both files have the same format */
if ((ip->i_d.di_mode & S_IFMT) != (tip->i_d.di_mode & S_IFMT)) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_unlock;
}
/* Verify both files are either real-time or non-realtime */
- if ((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) !=
- (tip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
+ if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_unlock;
}
/* Should never get a local format */
if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL ||
tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_unlock;
}
- if (VN_CACHED(tvp) != 0)
- xfs_inval_cached_pages(XFS_ITOV(tip), &(tip->i_iocore),
- (xfs_off_t)0, 0, 0);
+ if (VN_CACHED(VFS_I(tip)) != 0) {
+ xfs_inval_cached_trace(tip, 0, -1, 0, -1);
+ error = xfs_flushinval_pages(tip, 0, -1,
+ FI_REMAPF_LOCKED);
+ if (error)
+ goto out_unlock;
+ }
/* Verify O_DIRECT for ftmp */
- if (VN_CACHED(tvp) != 0) {
+ if (VN_CACHED(VFS_I(tip)) != 0) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_unlock;
}
/* Verify all data are being swapped */
- if (sx.sx_offset != 0 ||
- sx.sx_length != ip->i_d.di_size ||
- sx.sx_length != tip->i_d.di_size) {
+ if (sxp->sx_offset != 0 ||
+ sxp->sx_length != ip->i_d.di_size ||
+ sxp->sx_length != tip->i_d.di_size) {
error = XFS_ERROR(EFAULT);
- goto error0;
+ goto out_unlock;
}
/*
*/
if ( XFS_IFORK_Q(ip) != XFS_IFORK_Q(tip) ) {
error = XFS_ERROR(EINVAL);
- goto error0;
+ goto out_unlock;
}
/*
* process that the file was not changed out from
* under it.
*/
- if ((sbp->bs_ctime.tv_sec != ip->i_d.di_ctime.t_sec) ||
- (sbp->bs_ctime.tv_nsec != ip->i_d.di_ctime.t_nsec) ||
- (sbp->bs_mtime.tv_sec != ip->i_d.di_mtime.t_sec) ||
- (sbp->bs_mtime.tv_nsec != ip->i_d.di_mtime.t_nsec)) {
+ if ((sbp->bs_ctime.tv_sec != VFS_I(ip)->i_ctime.tv_sec) ||
+ (sbp->bs_ctime.tv_nsec != VFS_I(ip)->i_ctime.tv_nsec) ||
+ (sbp->bs_mtime.tv_sec != VFS_I(ip)->i_mtime.tv_sec) ||
+ (sbp->bs_mtime.tv_nsec != VFS_I(ip)->i_mtime.tv_nsec)) {
error = XFS_ERROR(EBUSY);
- goto error0;
+ goto out_unlock;
}
/* We need to fail if the file is memory mapped. Once we have tossed
* all existing pages, the page fault will have no option
* but to go to the filesystem for pages. By making the page fault call
- * VOP_READ (or write in the case of autogrow) they block on the iolock
+ * vop_read (or write in the case of autogrow) they block on the iolock
* until we have switched the extents.
*/
- if (VN_MAPPED(vp)) {
+ if (VN_MAPPED(VFS_I(ip))) {
error = XFS_ERROR(EBUSY);
- goto error0;
+ goto out_unlock;
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
* fields change.
*/
- VOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF);
+ xfs_tosspages(ip, 0, -1, FI_REMAPF);
tp = xfs_trans_alloc(mp, XFS_TRANS_SWAPEXT);
if ((error = xfs_trans_reserve(tp, 0,
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
xfs_iunlock(tip, XFS_IOLOCK_EXCL);
xfs_trans_cancel(tp, 0);
- return error;
+ goto out;
}
- xfs_lock_inodes(ips, 2, 0, XFS_ILOCK_EXCL);
+ xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL);
/*
* Count the number of extended attribute blocks
if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) &&
(ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) {
error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &aforkblks);
- if (error) {
- xfs_iunlock(ip, lock_flags);
- xfs_iunlock(tip, lock_flags);
- xfs_trans_cancel(tp, 0);
- return error;
- }
+ if (error)
+ goto out_trans_cancel;
}
if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) &&
(tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) {
error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK,
&taforkblks);
- if (error) {
- xfs_iunlock(ip, lock_flags);
- xfs_iunlock(tip, lock_flags);
- xfs_trans_cancel(tp, 0);
- return error;
- }
+ if (error)
+ goto out_trans_cancel;
}
/*
*/
ifp = &ip->i_df;
tifp = &tip->i_df;
- tempif = *ifp; /* struct copy */
- *ifp = *tifp; /* struct copy */
- *tifp = tempif; /* struct copy */
+ *tempifp = *ifp; /* struct copy */
+ *ifp = *tifp; /* struct copy */
+ *tifp = *tempifp; /* struct copy */
/*
* Fix the on-disk inode values
break;
}
- /*
- * Increment vnode ref counts since xfs_trans_commit &
- * xfs_trans_cancel will both unlock the inodes and
- * decrement the associated ref counts.
- */
- VN_HOLD(vp);
- VN_HOLD(tvp);
- xfs_trans_ijoin(tp, ip, lock_flags);
- xfs_trans_ijoin(tp, tip, lock_flags);
+ IHOLD(ip);
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
+
+ IHOLD(tip);
+ xfs_trans_ijoin(tp, tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
xfs_trans_log_inode(tp, ip, ilf_fields);
xfs_trans_log_inode(tp, tip, tilf_fields);
* If this is a synchronous mount, make sure that the
* transaction goes to disk before returning to the user.
*/
- if (mp->m_flags & XFS_MOUNT_WSYNC) {
+ if (mp->m_flags & XFS_MOUNT_WSYNC)
xfs_trans_set_sync(tp);
- }
-
- error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT, NULL);
- fput(fp);
- fput(tfp);
+ error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT);
+out:
+ kmem_free(tempifp);
return error;
- error0:
- if (locked) {
- xfs_iunlock(ip, lock_flags);
- xfs_iunlock(tip, lock_flags);
- }
-
- if (fp != NULL) fput(fp);
- if (tfp != NULL) fput(tfp);
+out_unlock:
+ xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
+ xfs_iunlock(tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
+ goto out;
- return error;
+out_trans_cancel:
+ xfs_trans_cancel(tp, 0);
+ goto out_unlock;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff