NetBSD/sbin/dump/ffs_inode.c

177 lines
5.1 KiB
C

/* $NetBSD: ffs_inode.c,v 1.3 1999/10/01 04:35:22 perseant Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993, 1994
* The Regents of the University of California. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
#else
__RCSID("$NetBSD: ffs_inode.c,v 1.3 1999/10/01 04:35:22 perseant Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/stat.h>
#ifdef sunos
#include <sys/vnode.h>
#include <ufs/fs.h>
#include <ufs/fsdir.h>
#include <ufs/inode.h>
#else
#include <ufs/ufs/dir.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
#endif
#include <protocols/dumprestore.h>
#include <ctype.h>
#include <errno.h>
#include <fts.h>
#include <stdio.h>
#ifdef __STDC__
#include <string.h>
#include <unistd.h>
#endif
#include "dump.h"
#ifndef SBOFF
#define SBOFF (SBLOCK * DEV_BSIZE)
#endif
struct fs *sblock;
/*
* Read the superblock from disk, and check its magic number.
* Determine whether byte-swapping needs to be done on this filesystem.
*/
int
fs_read_sblock(char *sblock_buf)
{
int needswap = 0;
sblock = (struct fs *)sblock_buf;
rawread(SBOFF, (char *) sblock, SBSIZE);
if (sblock->fs_magic != FS_MAGIC) {
if (sblock->fs_magic == bswap32(FS_MAGIC)) {
ffs_sb_swap(sblock, sblock, 0);
needswap = 1;
} else
quit("bad sblock magic number\n");
}
return needswap;
}
/*
* Fill in the ufsi struct, as well as the maxino and dev_bsize global
* variables.
*/
struct ufsi *
fs_parametrize(void)
{
static struct ufsi ufsi;
#ifdef FS_44INODEFMT
if (sblock->fs_inodefmt >= FS_44INODEFMT) {
spcl.c_flags = iswap32(iswap32(spcl.c_flags) | DR_NEWINODEFMT);
} else {
/*
* Determine parameters for older filesystems. From
* /sys/ufs/ffs/ffs_vfsops.c::ffs_oldfscompat()
*
* XXX: not sure if other variables (fs_npsect, fs_interleave,
* fs_nrpos, fs_maxfilesize) need to be fudged too.
*/
sblock->fs_qbmask = ~sblock->fs_bmask;
sblock->fs_qfmask = ~sblock->fs_fmask;
}
#endif
/* Fill out ufsi struct */
ufsi.ufs_dsize = fsbtodb(sblock,sblock->fs_size);
ufsi.ufs_bsize = sblock->fs_bsize;
ufsi.ufs_bshift = sblock->fs_bshift;
ufsi.ufs_fsize = sblock->fs_fsize;
ufsi.ufs_frag = sblock->fs_frag;
ufsi.ufs_fsatoda = sblock->fs_fsbtodb;
ufsi.ufs_nindir = sblock->fs_nindir;
ufsi.ufs_inopb = sblock->fs_inopb;
ufsi.ufs_maxsymlinklen = sblock->fs_maxsymlinklen;
ufsi.ufs_bmask = sblock->fs_bmask;
ufsi.ufs_fmask = sblock->fs_fmask;
ufsi.ufs_qbmask = sblock->fs_qbmask;
ufsi.ufs_qfmask = sblock->fs_qfmask;
dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
return &ufsi;
}
ino_t
fs_maxino(void)
{
return sblock->fs_ipg * sblock->fs_ncg;
}
struct dinode *
getino(inum)
ino_t inum;
{
static daddr_t minino, maxino;
static struct dinode inoblock[MAXINOPB];
int i;
curino = inum;
if (inum >= minino && inum < maxino)
return (&inoblock[inum - minino]);
bread(fsatoda(ufsib, ino_to_fsba(sblock, inum)), (char *)inoblock,
(int)ufsib->ufs_bsize);
if (needswap)
for (i = 0; i < MAXINOPB; i++)
ffs_dinode_swap(&inoblock[i], &inoblock[i]);
minino = inum - (inum % INOPB(sblock));
maxino = minino + INOPB(sblock);
return (&inoblock[inum - minino]);
}