/* 

 * Mach Operating System

 * Copyright (c) 1991,1990 Carnegie Mellon University

 * All Rights Reserved.

 * 

 * Permission to use, copy, modify and distribute this software and its

 * documentation is hereby granted, provided that both the copyright

 * notice and this permission notice appear in all copies of the

 * software, derivative works or modified versions, and any portions

 * thereof, and that both notices appear in supporting documentation.

 * 

 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"

 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR

 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.

 * 

 * Carnegie Mellon requests users of this software to return to

 * 

 *  Software Distribution Coordinator  or  [email protected]

 *  School of Computer Science

 *  Carnegie Mellon University

 *  Pittsburgh PA 15213-3890

 * 

 * any improvements or extensions that they make and grant Carnegie Mellon

 * the rights to redistribute these changes.

 */

/*

 * Common definitions for Berkeley Fast File System.

 */

/*

 * Compatibility definitions for disk IO.

 */

/*

 * Disk devices do all IO in 512-byte blocks.

 */

#define	DEV_BSIZE	512

/*

 * Conversion between bytes and disk blocks.

 */

#define	btodb(byte_offset)	((byte_offset) >> 9)

#define	dbtob(block_number)	((block_number) << 9)

/*

 * Compatibility definitions for old type names.

 */

typedef unsigned char u_char;	/* unsigned char */

typedef unsigned short u_short;	/* unsigned short */

typedef unsigned int u_int;	/* unsigned int */

#if !defined(__sun) || !defined(GRUB_UTIL)

typedef struct _quad_

  {

    unsigned int val[2];	/* 2 int values make... */

  }

quad;				/* an 8-byte item */

#endif /* !__sun || !GRUB_UTIL */

typedef unsigned int mach_time_t;	/* an unsigned int */

typedef unsigned int mach_daddr_t;	/* an unsigned int */

typedef unsigned int mach_off_t;	/* another unsigned int */

typedef unsigned short mach_uid_t;

typedef unsigned short mach_gid_t;

typedef unsigned int mach_ino_t;

#ifndef NBBY

#define	NBBY	8

#endif

/*

 * The file system is made out of blocks of at most MAXBSIZE units,

 * with smaller units (fragments) only in the last direct block.

 * MAXBSIZE primarily determines the size of buffers in the buffer

 * pool.  It may be made larger without any effect on existing

 * file systems; however, making it smaller may make some file

 * systems unmountable.

 *

 * Note that the disk devices are assumed to have DEV_BSIZE "sectors"

 * and that fragments must be some multiple of this size.

 */

#define	MAXBSIZE	8192

#define	MAXFRAG		8

/*

 * MAXPATHLEN defines the longest permissible path length

 * after expanding symbolic links.

 *

 * MAXSYMLINKS defines the maximum number of symbolic links

 * that may be expanded in a path name.  It should be set

 * high enough to allow all legitimate uses, but halt infinite

 * loops reasonably quickly.

 */

#define	MAXPATHLEN	1024

#define	MAXSYMLINKS	8