1 /* 2 * Copyright (c) 1995 Leo Weppelman. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Leo Weppelman. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef AHDI_H 32 #define AHDI_H 33 34 #define AHDI_BSIZE 512 /* AHDI blocksize */ 35 #define AHDI_BBLOCK 0 /* AHDI bootblock (root sector) */ 36 37 /* 38 * Various `well known' AHDI partition identifiers. 39 */ 40 #define AHDI_MKPID(x,y,z) ( ((u_int32_t)(x) << 16) \ 41 | ((u_int32_t)(y) << 8) \ 42 | ((u_int32_t)(z)) \ 43 ) 44 #define AHDI_PID_XGM AHDI_MKPID('X','G','M') 45 #define AHDI_PID_GEM AHDI_MKPID('G','E','M') 46 #define AHDI_PID_BGM AHDI_MKPID('B','G','M') 47 #define AHDI_PID_RAW AHDI_MKPID('R','A','W') 48 #define AHDI_PID_SWP AHDI_MKPID('S','W','P') 49 #define AHDI_PID_NBD AHDI_MKPID('N','B','D') 50 #define AHDI_PID_NBR AHDI_MKPID('N','B','R') 51 #define AHDI_PID_NBS AHDI_MKPID('N','B','S') 52 #define AHDI_PID_NBU AHDI_MKPID('N','B','U') 53 54 /* 55 * Format of AHDI boot block. 56 */ 57 #define AHDI_MAXRPD 4 /* max. # of partition descriptors */ 58 /* in an AHDI bootblock (aka root) */ 59 #define AHDI_MAXARPD 2 /* max. # of partition descriptors */ 60 61 /* 62 * On-disk representation of the AHDI disklabel. 63 */ 64 struct ahdi_part { 65 u_int8_t ap_flg; /* bit 0 is in-use flag */ 66 u_int8_t ap_id[3]; /* id: GEM, BGM, XGM, UNX, MIX */ 67 u_int32_t ap_st; /* block where partition starts */ 68 u_int32_t ap_size; /* partition size in blocks */ 69 }; 70 71 struct ahdi_root { 72 u_int8_t ar_fill[0x1c2];/* filler, can be boot code */ 73 u_int32_t ar_hdsize; /* size of entire volume in blocks */ 74 struct ahdi_part ar_parts[AHDI_MAXRPD]; /* root partition table */ 75 u_int32_t ar_bslst; /* start of bad-sector list */ 76 u_int32_t ar_bslsize; /* # of blocks in bad-sector list */ 77 u_int16_t ar_checksum; 78 }; 79 80 /* 81 * Partition table representation as generated by ahdi_getparts(): 82 */ 83 typedef struct { 84 char id[4]; 85 u_int start; 86 u_int end; 87 u_int rsec; 88 u_int rent; 89 int mod; 90 } part_t; 91 92 typedef struct { 93 int nparts; 94 part_t *parts; 95 } ptable_t; 96 97 /* 98 * Functions exported from ahdi.c 99 */ 100 EXTERN u_int ahdi_getparts PROTO((disk_t *, ptable_t *, u_int, u_int)); 101 #endif /* AHDI_H */ 102