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/*
* BSD FFS like functions used to ease porting bootstrap to MINIX fs
* Copyright (C) 1994 Csizmazia Balazs, University ELTE, Hungary
*
* This file 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 of the License, or
* (at your option) any later version.
*
* This program 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 <device/device_types.h>
#include <device/device.h>
#include <mach/mach_traps.h>
#include <mach/mach_interface.h>
#include <file_io.h>
#define MINIX_BLOCK_SIZE 1024
int minix_ino2blk (struct minix_super_block *fs, int ino)
{
int blk;
blk=0 /* it's Mach */+2 /* boot+superblock */ + fs->s_imap_blocks +
fs->s_zmap_blocks + (ino-1)/MINIX_INODES_PER_BLOCK;
return blk;
}
int minix_fsbtodb (struct minix_super_block *fs, int b)
{
return (b * MINIX_BLOCK_SIZE) / DEV_BSIZE;
}
int minix_itoo (struct minix_super_block *fs, int ino)
{
return (ino - 1) % MINIX_INODES_PER_BLOCK;
}
int minix_blkoff (struct minix_super_block * fs, vm_offset_t offset)
{
return offset % MINIX_BLOCK_SIZE;
}
int minix_lblkno (struct minix_super_block * fs, vm_offset_t offset)
{
return offset / MINIX_BLOCK_SIZE;
}
int minix_blksize (struct minix_super_block *fs, struct file *fp, minix_daddr_t file_block)
{
return MINIX_BLOCK_SIZE;
}
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