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