102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
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/*
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* Copyright (c) 1995 Leo Weppelman.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Leo Weppelman.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef AHDI_H
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#define AHDI_H
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#define AHDI_BSIZE 512 /* AHDI blocksize */
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#define AHDI_BBLOCK 0 /* AHDI bootblock (root sector) */
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/*
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* Various `well known' AHDI partition identifiers.
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*/
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#define AHDI_MKPID(x,y,z) ( ((u_int32_t)(x) << 16) \
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| ((u_int32_t)(y) << 8) \
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| ((u_int32_t)(z)) \
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)
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#define AHDI_PID_XGM AHDI_MKPID('X','G','M')
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#define AHDI_PID_GEM AHDI_MKPID('G','E','M')
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#define AHDI_PID_BGM AHDI_MKPID('B','G','M')
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#define AHDI_PID_RAW AHDI_MKPID('R','A','W')
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#define AHDI_PID_SWP AHDI_MKPID('S','W','P')
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#define AHDI_PID_NBD AHDI_MKPID('N','B','D')
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#define AHDI_PID_NBR AHDI_MKPID('N','B','R')
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#define AHDI_PID_NBS AHDI_MKPID('N','B','S')
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#define AHDI_PID_NBU AHDI_MKPID('N','B','U')
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/*
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* Format of AHDI boot block.
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*/
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#define AHDI_MAXRPD 4 /* max. # of partition descriptors */
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/* in an AHDI bootblock (aka root) */
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#define AHDI_MAXARPD 2 /* max. # of partition descriptors */
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/*
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* On-disk representation of the AHDI disklabel.
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*/
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struct ahdi_part {
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u_int8_t ap_flg; /* bit 0 is in-use flag */
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u_int8_t ap_id[3]; /* id: GEM, BGM, XGM, UNX, MIX */
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u_int32_t ap_st; /* block where partition starts */
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u_int32_t ap_size; /* partition size in blocks */
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};
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struct ahdi_root {
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u_int8_t ar_fill[0x1c2];/* filler, can be boot code */
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u_int32_t ar_hdsize; /* size of entire volume in blocks */
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struct ahdi_part ar_parts[AHDI_MAXRPD]; /* root partition table */
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u_int32_t ar_bslst; /* start of bad-sector list */
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u_int32_t ar_bslsize; /* # of blocks in bad-sector list */
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u_int16_t ar_checksum;
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};
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/*
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* Partition table representation as generated by ahdi_getparts():
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*/
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typedef struct {
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char id[4];
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u_int start;
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u_int end;
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u_int rsec;
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u_int rent;
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int mod;
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} part_t;
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typedef struct {
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int nparts;
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part_t *parts;
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} ptable_t;
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/*
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* Functions exported from ahdi.c
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*/
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EXTERN u_int ahdi_getparts PROTO((disk_t *, ptable_t *, u_int, u_int));
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#endif /* AHDI_H */
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