132 lines
4.5 KiB
C
132 lines
4.5 KiB
C
/* $OpenBSD: partition_map.h,v 1.42 2016/01/31 23:00:11 krw Exp $ */
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/*
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* partition_map.h - partition map routines
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*
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* Written by Eryk Vershen
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*/
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/*
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* Copyright 1996,1998 by Apple Computer, Inc.
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* All Rights Reserved
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appears in all copies and
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* that both the copyright notice and this permission notice appear in
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* supporting documentation.
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*
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* APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
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* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef __partition_map__
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#define __partition_map__
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#define BLOCK0_SIGNATURE 0x4552 /* 'ER' */
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#define DPME_SIGNATURE 0x504D /* 'PM' */
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#define DPISTRLEN 32
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struct ddmap {
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uint32_t ddBlock; /* 1st driver's starting sbBlkSize block */
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uint16_t ddSize; /* size of 1st driver (512-byte blks) */
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uint16_t ddType; /* system type (1 for Mac+) */
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};
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struct entry;
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struct partition_map {
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LIST_HEAD(, entry) disk_order;
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LIST_HEAD(, entry) base_order;
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char *name;
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int fd;
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int changed;
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int blocks_in_map;
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int maximum_in_map;
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unsigned long media_size; /* in physical blocks */
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/* On-disk block 0 data. */
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uint16_t sbSig; /* "ER" */
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uint16_t sbBlkSize; /* physical block size of device */
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uint32_t sbBlkCount; /* # of physical blocks on device */
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uint16_t sbDevType; /* device type */
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uint16_t sbDevId; /* device id */
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uint32_t sbData; /* not used */
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uint16_t sbDrvrCount; /* driver descriptor count */
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struct ddmap sbDDMap[8]; /* driver descriptor map*/
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uint8_t sbReserved[430];
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};
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struct entry {
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LIST_ENTRY(entry) disk_entry;
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LIST_ENTRY(entry) base_entry;
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struct partition_map *the_map;
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long disk_address;
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/* On-disk dpme block data.*/
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uint16_t dpme_signature; /* "PM" */
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uint8_t dpme_reserved_1[2];
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uint32_t dpme_map_entries; /* # of partition entries */
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uint32_t dpme_pblock_start; /* physical block start of partition */
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uint32_t dpme_pblocks; /* physical block count of partition */
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char dpme_name[DPISTRLEN+1]; /* name of partition + NUL */
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char dpme_type[DPISTRLEN+1]; /* type of partition + NUL */
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uint32_t dpme_lblock_start; /* logical block start of partition */
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uint32_t dpme_lblocks; /* logical block count of partition */
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uint32_t dpme_flags;
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#define DPME_OS_SPECIFIC_1 (1<<8)
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#define DPME_OS_SPECIFIC_2 (1<<7)
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#define DPME_OS_PIC_CODE (1<<6)
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#define DPME_WRITABLE (1<<5)
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#define DPME_READABLE (1<<4)
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#define DPME_BOOTABLE (1<<3)
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#define DPME_IN_USE (1<<2)
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#define DPME_ALLOCATED (1<<1)
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#define DPME_VALID (1<<0)
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uint32_t dpme_boot_block; /* logical block start of boot code */
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uint32_t dpme_boot_bytes; /* byte count of boot code */
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uint16_t dpme_load_addr; /* memory address of boot code */
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uint8_t dpme_reserved_2[4];
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uint32_t dpme_goto_addr; /* memory jump address of boot code */
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uint8_t dpme_reserved_3[4];
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uint32_t dpme_checksum; /* of the boot code. */
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char dpme_processor_id[17]; /* processor type + NUL */
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uint8_t dpme_reserved_4[376];
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};
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extern const char *kFreeType;
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extern const char *kMapType;
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extern const char *kUnixType;
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extern const char *kHFSType;
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extern int lflag;
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extern int rflag;
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struct partition_map *create_partition_map(int, char *, uint64_t, uint32_t);
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struct partition_map *open_partition_map(int, char *, uint64_t, uint32_t);
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struct entry *find_entry_by_disk_address(long, struct partition_map *);
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struct entry *find_entry_by_type(const char *, struct partition_map *);
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struct entry *find_entry_by_base(uint32_t, struct partition_map *);
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int add_partition_to_map(const char *, const char *, uint32_t, uint32_t,
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struct partition_map *);
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int contains_driver(struct entry *);
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void free_partition_map(struct partition_map *);
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void delete_partition_from_map(struct entry *);
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void move_entry_in_map(long, long, struct partition_map *);
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void resize_map(long new_size, struct partition_map *);
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void write_partition_map(struct partition_map *);
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void dpme_init_flags(struct entry *);
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#endif /* __partition_map__ */
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