1163838Spjd/*- 2163838Spjd * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3163838Spjd * All rights reserved. 4163838Spjd * 5163838Spjd * Redistribution and use in source and binary forms, with or without 6163838Spjd * modification, are permitted provided that the following conditions 7163838Spjd * are met: 8163838Spjd * 1. Redistributions of source code must retain the above copyright 9163838Spjd * notice, this list of conditions and the following disclaimer. 10163838Spjd * 2. Redistributions in binary form must reproduce the above copyright 11163838Spjd * notice, this list of conditions and the following disclaimer in the 12163838Spjd * documentation and/or other materials provided with the distribution. 13163838Spjd * 14163838Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15163838Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16163838Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17163838Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18163838Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19163838Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20163838Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21163838Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22163838Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23163838Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24163838Spjd * SUCH DAMAGE. 25163838Spjd */ 26163838Spjd 27163838Spjd#include <sys/cdefs.h> 28163838Spjd__FBSDID("$FreeBSD$"); 29163838Spjd 30163838Spjd#include <sys/param.h> 31163838Spjd#include <sys/disklabel.h> 32163838Spjd#include <sys/mount.h> 33163838Spjd 34163838Spjd#include <ufs/ufs/dinode.h> 35163838Spjd#include <ufs/ffs/fs.h> 36163838Spjd 37163838Spjd#include <libufs.h> 38163838Spjd#include <libgeom.h> 39163838Spjd#include <core/geom.h> 40163838Spjd#include <misc/subr.h> 41163838Spjd 42163838Spjd#include "geom_journal.h" 43163838Spjd 44163838Spjdstatic struct fs * 45163838Spjdread_superblock(const char *prov) 46163838Spjd{ 47163838Spjd static struct uufsd disk; 48163838Spjd struct fs *fs; 49163838Spjd 50163838Spjd if (ufs_disk_fillout(&disk, prov) == -1) 51163838Spjd return (NULL); 52163838Spjd fs = &disk.d_fs; 53163838Spjd ufs_disk_close(&disk); 54163838Spjd return (fs); 55163838Spjd} 56163838Spjd 57163838Spjdint 58163838Spjdg_journal_ufs_exists(const char *prov) 59163838Spjd{ 60163838Spjd 61163838Spjd return (read_superblock(prov) != NULL); 62163838Spjd} 63163838Spjd 64163838Spjdint 65163838Spjdg_journal_ufs_using_last_sector(const char *prov) 66163838Spjd{ 67163838Spjd struct fs *fs; 68163838Spjd off_t psize, fssize; 69163838Spjd 70163838Spjd fs = read_superblock(prov); 71163838Spjd if (fs == NULL) 72163838Spjd return (0); 73245074Skib /* Provider size in 512 bytes blocks. */ 74245074Skib psize = g_get_mediasize(prov) / DEV_BSIZE; 75245074Skib /* File system size in 512 bytes blocks. */ 76245074Skib fssize = fsbtodb(fs, fs->fs_size); 77245074Skib return (psize <= fssize); 78163838Spjd} 79