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/*
Copyright (C) 1994, 1996 Free Software Foundation, Inc.
Written by Michael I. Bushnell.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "fsck.h"
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <error.h>
static char sblockbuf[SBSIZE];
struct fs *sblock = (struct fs *)sblockbuf;
/* A string identifying what we're trying to check. */
char *device_name = 0;
daddr_t maxfsblock;
int maxino;
int direct_symlink_extension;
int newinofmt;
int readfd, writefd;
int fix_denied = 0;
int fsmodified = 0;
int lfdir;
/* Get ready to run on device with pathname DEV. */
int
setup (char *dev)
{
struct stat st;
int changedsb;
size_t bmapsize;
device_name = dev;
if (stat (dev, &st) == -1)
{
error (0, errno, "%s", dev);
return 0;
}
if (!S_ISCHR (st.st_mode))
{
problem (1, "%s is not a character device", dev);
if (! reply ("CONTINUE"))
return 0;
}
if (preen == 0)
printf ("** %s", dev);
if (!nowrite)
readfd = open (dev, O_RDWR);
if (nowrite || readfd == -1)
{
readfd = open (dev, O_RDONLY);
if (readfd == -1)
{
error (0, errno, "%s", dev);
return 0;
}
writefd = -1;
nowrite = 1;
if (preen)
warning (1, "NO WRITE ACCESS");
printf (" (NO WRITE)");
}
else
writefd = readfd;
if (preen == 0)
printf ("\n");
lfdir = 0;
/* We don't do the alternate superblock stuff here (yet). */
readblock (SBLOCK, sblock, SBSIZE);
changedsb = 0;
if (sblock->fs_magic != FS_MAGIC)
{
warning (1, "BAD MAGIC NUMBER");
return 0;
}
if (sblock->fs_ncg < 1)
{
warning (1, "NCG OUT OF RANGE");
return 0;
}
if (sblock->fs_cpg < 1)
{
warning (1, "CPG OUT OF RANGE");
return 0;
}
if (sblock->fs_ncg * sblock->fs_cpg < sblock->fs_ncyl
|| (sblock->fs_ncg - 1) * sblock->fs_cpg >= sblock->fs_ncyl)
{
warning (1, "NCYL INCONSISTENT WITH NCG AND CPG");
return 0;
}
if (sblock->fs_sbsize > SBSIZE)
{
warning (1, "SBLOCK SIZE PREPONTEROUSLY LARGE");
return 0;
}
if (sblock->fs_optim != FS_OPTTIME && sblock->fs_optim != FS_OPTSPACE)
{
problem (1, "UNDEFINED OPTIMIZATION IN SUPERBLOCK");
if (reply ("SET TO DEFAULT"))
{
sblock->fs_optim = FS_OPTTIME;
changedsb = 1;
}
}
if (sblock->fs_minfree < 0 || sblock->fs_minfree > 99)
{
problem (0, "IMPOSSIBLE MINFREE=%ld IN SUPERBLOCK", sblock->fs_minfree);
if (preen || reply ("SET TO DEFAULT"))
{
sblock->fs_minfree = 10;
changedsb = 1;
pfix ("SET TO DEFAULT");
}
}
if (sblock->fs_interleave < 1
|| sblock->fs_interleave > sblock->fs_nsect)
{
problem (0, "IMPOSSIBLE INTERLEAVE=%ld IN SUPERBLOCK",
sblock->fs_interleave);
if (preen || reply ("SET TO DEFAULT"))
{
sblock->fs_interleave = 1;
changedsb = 1;
pfix ("SET TO DEFAULT");
}
}
if (sblock->fs_npsect < sblock->fs_nsect
|| sblock->fs_npsect > sblock->fs_nsect * 2)
{
problem (0, "IMPOSSIBLE NPSECT=%ld IN SUPERBLOCK", sblock->fs_npsect);
if (preen || reply ("SET TO DEFAULT"))
{
sblock->fs_npsect = sblock->fs_nsect;
changedsb = 1;
pfix ("SET TO DEFAULT");
}
}
if (sblock->fs_inodefmt >= FS_44INODEFMT)
newinofmt = 1;
else
{
sblock->fs_qbmask = ~sblock->fs_bmask;
sblock->fs_qfmask = ~sblock->fs_fmask;
newinofmt = 0;
}
if (changedsb)
writeblock (SBLOCK, sblock, SBSIZE);
/* Constants */
maxfsblock = sblock->fs_size;
maxino = sblock->fs_ncg * sblock->fs_ipg;
direct_symlink_extension = sblock->fs_maxsymlinklen > 0;
/* Allocate and initialize maps */
bmapsize = roundup (howmany (maxfsblock, NBBY), sizeof (short));
blockmap = calloc (bmapsize, sizeof (char));
inodestate = calloc (maxino + 1, sizeof (char));
typemap = calloc (maxino + 1, sizeof (char));
linkcount = calloc (maxino + 1, sizeof (nlink_t));
linkfound = calloc (maxino + 1, sizeof (nlink_t));
return 1;
}
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