/* vi: set sw=4 ts=4: *//* * ind_block.c --- indirect block I/O routines * * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, *	2001, 2002, 2003, 2004, 2005 by  Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */#include <stdio.h>#include <string.h>#if HAVE_UNISTD_H#include <unistd.h>#endif#include "ext2_fs.h"#include "ext2fs.h"errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf){	errcode_t	retval;#if BB_BIG_ENDIAN	blk_t		*block_nr;	int		i;	int		limit = fs->blocksize >> 2;#endif	if ((fs->flags & EXT2_FLAG_IMAGE_FILE) &&	    (fs->io != fs->image_io))		memset(buf, 0, fs->blocksize);	else {		retval = io_channel_read_blk(fs->io, blk, 1, buf);		if (retval)			return retval;	}#if BB_BIG_ENDIAN	if (fs->flags & (EXT2_FLAG_SWAP_BYTES | EXT2_FLAG_SWAP_BYTES_READ)) {		block_nr = (blk_t *) buf;		for (i = 0; i < limit; i++, block_nr++)			*block_nr = ext2fs_swab32(*block_nr);	}#endif	return 0;}errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf){#if BB_BIG_ENDIAN	blk_t		*block_nr;	int		i;	int		limit = fs->blocksize >> 2;#endif	if (fs->flags & EXT2_FLAG_IMAGE_FILE)		return 0;#if BB_BIG_ENDIAN	if (fs->flags & (EXT2_FLAG_SWAP_BYTES | EXT2_FLAG_SWAP_BYTES_WRITE)) {		block_nr = (blk_t *) buf;		for (i = 0; i < limit; i++, block_nr++)			*block_nr = ext2fs_swab32(*block_nr);	}#endif	return io_channel_write_blk(fs->io, blk, 1, buf);}