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/*-
* Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/ufs/ufs/ufs_gjournal.c,v 1.3.2.1.6.1 2010/12/21 17:09:25 kensmith Exp $");
#include "opt_ufs.h"
#ifdef UFS_GJOURNAL
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/lock.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <ufs/ufs/extattr.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/gjournal.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
/*
* Change the number of unreferenced inodes.
*/
static int
ufs_gjournal_modref(struct vnode *vp, int count)
{
struct cg *cgp;
struct buf *bp;
ufs2_daddr_t cgbno;
int error, cg;
struct cdev *dev;
struct inode *ip;
struct ufsmount *ump;
struct fs *fs;
struct vnode *devvp;
ino_t ino;
ip = VTOI(vp);
ump = ip->i_ump;
fs = ip->i_fs;
devvp = ip->i_devvp;
ino = ip->i_number;
cg = ino_to_cg(fs, ino);
if (devvp->v_type != VCHR) {
/* devvp is a snapshot */
dev = VTOI(devvp)->i_devvp->v_rdev;
cgbno = fragstoblks(fs, cgtod(fs, cg));
} else {
/* devvp is a normal disk device */
dev = devvp->v_rdev;
cgbno = fsbtodb(fs, cgtod(fs, cg));
}
if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg)
panic("ufs_gjournal_modref: range: dev = %s, ino = %lu, fs = %s",
devtoname(dev), (u_long)ino, fs->fs_fsmnt);
if ((error = bread(devvp, cgbno, (int)fs->fs_cgsize, NOCRED, &bp))) {
brelse(bp);
return (error);
}
cgp = (struct cg *)bp->b_data;
if (!cg_chkmagic(cgp)) {
brelse(bp);
return (0);
}
bp->b_xflags |= BX_BKGRDWRITE;
cgp->cg_unrefs += count;
UFS_LOCK(ump);
fs->fs_unrefs += count;
fs->fs_fmod = 1;
ACTIVECLEAR(fs, cg);
UFS_UNLOCK(ump);
bdwrite(bp);
return (0);
}
void
ufs_gjournal_orphan(struct vnode *vp)
{
struct inode *ip;
if (vp->v_mount->mnt_gjprovider == NULL)
return;
if (vp->v_usecount < 2 || (vp->v_vflag & VV_DELETED))
return;
ip = VTOI(vp);
if ((vp->v_type == VDIR && ip->i_nlink > 2) ||
(vp->v_type != VDIR && ip->i_nlink > 1)) {
return;
}
vp->v_vflag |= VV_DELETED;
ufs_gjournal_modref(vp, 1);
}
void
ufs_gjournal_close(struct vnode *vp)
{
struct inode *ip;
if (vp->v_mount->mnt_gjprovider == NULL)
return;
if (!(vp->v_vflag & VV_DELETED))
return;
ip = VTOI(vp);
if (ip->i_nlink > 0)
return;
ufs_gjournal_modref(vp, -1);
}
#endif /* UFS_GJOURNAL */
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