mirror of https://github.com/crash-utility/crash
109 lines
4.0 KiB
C
109 lines
4.0 KiB
C
/* vas_crash.h - kernel crash dump file format (on swap)
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*
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* Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
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* Copyright (C) 2002, 2003, 2004, 2005, 2006 David Anderson
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* Copyright (C) 2002, 2003, 2004, 2005, 2006 Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* 10/99, Dave Winchell, Initial release for kernel crash dump support.
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* 11/12/99, Dave Winchell, Add support for in memory dumps.
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*/
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#include <sys/types.h>
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//#include <asm/page.h>
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void save_core(void);
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/* struct crash_map_hdr located at byte offset 0 */
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/* on-disk formats */
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#define trunc_page(x) ((void *)(((unsigned long)(x)) & ~((unsigned long)(Page_Size - 1))))
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#define round_page(x) trunc_page(((unsigned long)(x)) + ((unsigned long)(Page_Size - 1)))
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#define CRASH_MAGIC 0x9a8bccdd
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#define CRASH_SOURCE_PAGES 128
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#define CRASH_SUB_MAP_BYTES ((u_long)round_page((CRASH_SOURCE_PAGES+1)*sizeof(u_long)))
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#define CRASH_SUB_MAP_PAGES (CRASH_SUB_MAP_BYTES / Page_Size)
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#define CRASH_UNCOMPR_BUF_PAGES (CRASH_SOURCE_PAGES + CRASH_SUB_MAP_PAGES)
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#define CRASH_COMPR_BUF_PAGES (CRASH_UNCOMPR_BUF_PAGES + (CRASH_UNCOMPR_BUF_PAGES/4))
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#define CRASH_COMPESS_PRIME_PAGES (2*CRASH_COMPR_BUF_PAGES)
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#define CRASH_ZALLOC_PAGES 16*5*2 /* 2 to handle crash in crash */
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#define CRASH_LOW_WATER_PAGES 100
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#define HP_BIOS_HIGH_PAGES_USED 2000
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#define CRASH_MARK_RESERVED(addr) (set_bit(PG_reserved,&mem_map[MAP_NR(addr)].flags))
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#define CRASH_CLEAR_RESERVED(addr) (clear_bit(PG_reserved,&mem_map[MAP_NR(addr)].flags))
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#ifdef NOT_DEF
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typedef int boolean_t;
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#endif
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#define TRUE 1
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#define FALSE 0
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/* mem structure */
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struct mem_crash_map_hdr {
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long magic[4]; /* identify crash dump */
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u_long map; /* location of map */
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u_long map_pages;
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u_long data_pages;
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u_long compr_units;
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};
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struct mem_crash_map_entry {
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u_long src_va; /* source start of larger non-contig block */
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/* a src_va of -1 means that the dest_page_va
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* is the location of the next map page */
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u_long dest_page_va; /* dest of this sub block */
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u_long check_sum; /* check_sum for dest data */
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};
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/* file structure */
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struct crash_map_hdr {
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long magic[4]; /* identify crash dump */
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int blk_size; /* block size for this device */
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int map_block; /* location of map */
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int map_blocks; /* number of blocks for map */
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};
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struct crash_map_entry {
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u_long start_va; /* virtual address */
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char *exp_data; /* expanded data in memory */
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int start_blk; /* device location */
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int num_blks;
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};
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#define CRASH_OFFSET_BLKS 100
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#define CRASH_MAGIC 0x9a8bccdd
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struct crash_map_hdr_v1 {
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long magic[4]; /* identify crash dump */
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int blk_size; /* block size for this device */
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int map_block; /* location of map */
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int map_blocks; /* number of blocks for map */
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int map_entries;
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u_long va_per_entry; /* va covered by each map_entry */
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u_long bytes_not_dumped; /* ran out of swap space */
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int total_blocks; /* CRASH_OFFSET_BLKS + header + map + data */
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};
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struct crash_map_entry_v1 {
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u_long start_va; /* virtual address */
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char *exp_data; /* expanded data in memory */
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int start_blk; /* device location */
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int num_blks;
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int chk_sum; /* check sum */
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};
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