NetBSD-5.0.2/sys/fs/filecorefs/filecore.h
/* $NetBSD: filecore.h,v 1.5 2007/12/25 18:33:43 perry Exp $ */
/*-
* Copyright (c) 1994 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
*
* filecore.h 1.0 1998/6/1
*/
/*-
* Copyright (c) 1998 Andrew McMurry
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
*
* filecore.h 1.0 1998/6/1
*/
/*
* Definitions describing Acorn Filecore file system structure, as well as
* the functions necessary to access fields of filecore file system
* structures.
*/
#if !defined(_KERNEL)
#error not supposed to be exposed to userland.
#endif
#define FILECORE_BOOTBLOCK_BLKN 6
#define FILECORE_BOOTBLOCK_SIZE 0x200
#define FILECORE_BB_DISCREC 0x1C0
#define FILECORE_DISCREC_SIZE 60
#define FILECORE_DIR_SIZE 2048
#define FILECORE_DIRENT_SIZE 26
#define FILECORE_MAXDIRENTS 77
#define FILECORE_ROOTINO 0xFFFFFFFF
#define FILECORE_INO_MASK 0x00FFFFFF
#define FILECORE_INO_INDEX 24
#define FILECORE_ATTR_READ 1
#define FILECORE_ATTR_WRITE 2
#define FILECORE_ATTR_DIR 8
#define FILECORE_ATTR_OREAD 32
#define FILECORE_ATTR_OWRITE 64
#if 0
#define FILECORE_DEBUG
#define FILECORE_DEBUG_BR
#endif
struct filecore_disc_record {
unsigned log2secsize:8; /* base 2 log of the sector size */
unsigned secspertrack:8; /* number of sectors per track */
unsigned heads:8; /* number of heads */
unsigned density:8; /* 0: harddisc, else floppy density */
unsigned idlen:8; /* length of fragment id in bits */
unsigned log2bpmb:8; /* base 2 log of the bytes per FAU */
unsigned skew:8; /* track to sector skew */
unsigned bootoption:8; /* *OPT option */
unsigned lowsector:8; /* lowest sector id on a track */
unsigned nzones:8; /* number of zones in the map */
unsigned zone_spare:16; /* number of non-map bits per zone */
unsigned root; /* address of root directory */
unsigned disc_size; /* disc size in bytes (low word) */
unsigned disc_id:16; /* disc cycle id */
char disc_name[10]; /* disc name */
unsigned disc_type; /* disc type */
unsigned disc_size_2; /* disc size in bytes (high word) */
unsigned share_size:8; /* base 2 log sharing granularity */
unsigned big_flag:8; /* 1 if disc > 512Mb */
char reserved[18];
} __packed;
struct filecore_direntry {
char name[10];
unsigned load:32;
unsigned exec:32;
unsigned len:32;
unsigned addr:24;
unsigned attr:8;
} __packed;
struct filecore_dirhead {
unsigned mas_seq:8;
unsigned chkname:32;
} __packed;
struct filecore_dirtail {
unsigned lastmark:8;
unsigned reserved:16;
unsigned parent1:16;
unsigned parent2:8;
char title[19];
char name[10];
unsigned mas_seq:8;
unsigned chkname:32;
unsigned checkbyte:8;
} __packed;
#define fcdirhead(dp) ((struct filecore_dirhead *)(dp))
#define fcdirentry(dp,n) (((struct filecore_direntry *)(((char *)(dp))+5))+(n))
#define fcdirtail(dp) ((struct filecore_dirtail *)(((char *)(dp))+2007))