path: root/fs/xfs/xfs_iops.c

/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * 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.  See the
 * GNU General Public License for more details.
 *
 * 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_fs.h"
#include "xfs_acl.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_alloc.h"
#include "xfs_quota.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_bmap.h"
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_itable.h"
#include "xfs_rw.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_utils.h"
#include "xfs_vnodeops.h"
#include "xfs_inode_item.h"
#include "xfs_trace.h"

#include <linux/capability.h>
#include <linux/xattr.h>
#include <linux/namei.h>
#include <linux/posix_acl.h>
#include <linux/security.h>
#include <linux/fiemap.h>
#include <linux/slab.h>

/*
 * Bring the timestamps in the XFS inode uptodate.
 *
 * Used before writing the inode to disk.
 */
void
xfs_synchronize_times(
	xfs_inode_t	*ip)
{
	struct inode	*inode = VFS_I(ip);

	ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
	ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
	ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec;
	ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec;
	ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec;
	ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
}

/*
 * If the linux inode is valid, mark it dirty, else mark the dirty state
 * in the XFS inode to make sure we pick it up when reclaiming the inode.
 */
void
xfs_mark_inode_dirty_sync(
	xfs_inode_t	*ip)
{
	struct inode	*inode = VFS_I(ip);

	if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
		mark_inode_dirty_sync(inode);
	else {
		barrier();
		ip->i_update_core = 1;
	}
}

void
xfs_mark_inode_dirty(
	xfs_inode_t	*ip)
{
	struct inode	*inode = VFS_I(ip);

	if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
		mark_inode_dirty(inode);
	else {
		barrier();
		ip->i_update_core = 1;
	}

}

/*
 * Hook in SELinux.  This is not quite correct yet, what we really need
 * here (as we do for default ACLs) is a mechanism by which creation of
 * these attrs can be journalled at inode creation time (along with the
 * inode, of course, such that log replay can't cause these to be lost).
 */
STATIC int
xfs_init_security(
	struct inode	*inode,
	struct inode	*dir,
	const struct qstr *qstr)
{
	struct xfs_inode *ip = XFS_I(inode);
	size_t		length;
	void		*value;
	unsigned char	*name;
	int		error;

	error = security_inode_init_security(inode, dir, qstr, (char **)&name,