/*
* Copyright (c) 1987,1997, Prentice Hall
* All rights reserved.
*
* Redistribution and use of the MINIX operating system in source and
* binary forms, with or without modification, are permitted provided
* that the following conditions are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of Prentice Hall nor the names of the software
* authors or contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, 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 PRENTICE HALL OR ANY AUTHORS 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.
*/
/* Data block. */
#ifndef _BLOCK_H
#define _BLOCK_H
#include "dir.h"
#define DIRECTORY_BLOCK 1 /* directory block */
#define INDIRECT_BLOCK 2 /* pointer block */
typedef struct {
union {
char b__data[BLOCK_SIZE]; /* ordinary user data */
direct_t b__dir[NR_DIR_ENTRIES]; /* directory block */
directex_t b__direx[NR_DIR_ENTRIES_EX]; /* extended directory block */
zone1_t b__v1_ind[V1_INDIRECTS]; /* V1 indirect block */
zone_t b__v2_ind[V2_INDIRECTS]; /* V2 indirect block */
d1_inode_t b__v1_ino[V1_INODES_PER_BLOCK]; /* V1 inode block */
d2_inode_t b__v2_ino[V2_INODES_PER_BLOCK]; /* V2 inode block */
} b;
block_num_t b_blocknr; /* number of block */
char b_count; /* number of users of this block */
} block_t;
extern block_t* work_block;
#endif /* _BLOCK_H */