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/*-
* Copyright (c) 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("$FreeBSD$");
#include <sys/param.h>
#include <sys/disklabel.h>
#include <sys/mount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <libufs.h>
#include <libgeom.h>
#include <core/geom.h>
#include <misc/subr.h>
#include "geom_journal.h"
static struct fs *
read_superblock(const char *prov)
{
static struct uufsd disk;
struct fs *fs;
if (ufs_disk_fillout(&disk, prov) == -1)
return (NULL);
fs = &disk.d_fs;
ufs_disk_close(&disk);
return (fs);
}
int
g_journal_ufs_exists(const char *prov)
{
return (read_superblock(prov) != NULL);
}
int
g_journal_ufs_using_last_sector(const char *prov)
{
struct fs *fs;
off_t psize, fssize;
fs = read_superblock(prov);
if (fs == NULL)
return (0);
/* Provider size in 512 bytes blocks. */
psize = g_get_mediasize(prov) / DEV_BSIZE;
/* File system size in 512 bytes blocks. */
fssize = fsbtodb(fs, fs->fs_size);
return (psize <= fssize);
}
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