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crash/lkcd_v1.c

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/* lkcd_v1.c - core analysis suite
*
* Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
* Copyright (C) 2002, 2003, 2004, 2005 David Anderson
* Copyright (C) 2002, 2003, 2004, 2005 Red Hat, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define LKCD_COMMON
#include "defs.h"
#define CONFIG_VMDUMP
#include "lkcd_vmdump_v1.h"
static dump_header_t dump_header_v1 = { 0 };
static dump_page_t dump_page = { 0 };
/*
* Verify and initialize the LKCD environment, storing the common data
* in the global lkcd_environment structure.
*/
int
lkcd_dump_init_v1(FILE *fp, int fd)
{
int i;
int eof;
uint32_t pgcnt;
dump_header_t *dh;
dump_page_t *dp;
lkcd->fd = fd;
lkcd->fp = fp;
lseek(lkcd->fd, 0, SEEK_SET);
dh = &dump_header_v1;
dp = &dump_page;
if (read(lkcd->fd, dh, sizeof(dump_header_t)) !=
sizeof(dump_header_t))
return FALSE;
lkcd->dump_header = dh;
lkcd->dump_page = dp;
if (lkcd->debug)
dump_lkcd_environment(LKCD_DUMP_HEADER_ONLY);
/*
* Allocate and clear the benchmark offsets, one per megabyte.
*/
lkcd->page_size = dh->dh_page_size;
lkcd->page_shift = ffs(lkcd->page_size) - 1;
lkcd->bits = sizeof(long) * 8;
lkcd->total_pages = dh->dh_num_pages;
lkcd->benchmark_pages = (dh->dh_num_pages/LKCD_PAGES_PER_MEGABYTE())+1;
lkcd->page_header_size = sizeof(dump_page_t);
lkcd->zone_shift = ffs(ZONE_SIZE) - 1;
lkcd->zone_mask = ~(ZONE_SIZE - 1);
lkcd->num_zones = 0;
lkcd->max_zones = 0;
lkcd->get_dp_flags = get_dp_flags_v1;
lkcd->get_dp_address = get_dp_address_v1;
lkcd->get_dp_size = get_dp_size_v1;
lkcd->compression = LKCD_DUMP_COMPRESS_RLE;
lseek(lkcd->fd, LKCD_OFFSET_TO_FIRST_PAGE, SEEK_SET);
for (pgcnt = 0, eof = FALSE; !eof; pgcnt++) {
switch (lkcd_load_dump_page_header(dp, pgcnt))
{
case LKCD_DUMPFILE_OK:
case LKCD_DUMPFILE_END:
break;
case LKCD_DUMPFILE_EOF:
eof = TRUE;
continue;
}
if (!(dp->dp_flags & (DUMP_COMPRESSED|DUMP_RAW|DUMP_END))) {
lkcd_print("unknown page flag in dump: %lx\n",
dp->dp_flags);
}
if (dp->dp_size > 4096) {
lkcd_print("dp_size > 4096: %d\n", dp->dp_size);
dump_lkcd_environment(LKCD_DUMP_PAGE_ONLY);
}
if (dp->dp_flags & DUMP_END) {
lkcd_print("found DUMP_END\n");
break;
}
lseek(lkcd->fd, dp->dp_size, SEEK_CUR);
if (!LKCD_DEBUG(1))
break;
}
/*
* Allocate space for LKCD_CACHED_PAGES data pages plus one to
* contain a copy of the compressed data of the current page.
*/
if ((lkcd->page_cache_buf = (char *)malloc
(dh->dh_page_size * (LKCD_CACHED_PAGES))) == NULL)
return FALSE;
/*
* Clear the page data areas.
*/
lkcd_free_memory();
for (i = 0; i < LKCD_CACHED_PAGES; i++) {
lkcd->page_cache_hdr[i].pg_bufptr =
&lkcd->page_cache_buf[i * dh->dh_page_size];
}
if ((lkcd->compressed_page = (char *)malloc(dh->dh_page_size)) == NULL)
return FALSE;
if ((lkcd->page_hash = (struct page_hash_entry *)calloc
(LKCD_PAGE_HASH, sizeof(struct page_hash_entry))) == NULL)
return FALSE;
lkcd->total_pages = eof || (pgcnt > dh->dh_num_pages) ?
pgcnt : dh->dh_num_pages;
lkcd->panic_task = (ulong)dh->dh_current_task;
lkcd->panic_string = (char *)&dh->dh_panic_string[0];
if (!fp)
lkcd->flags |= LKCD_REMOTE;
lkcd->flags |= LKCD_VALID;
return TRUE;
}
/*
* Return the current page's dp_size.
*/
uint32_t
get_dp_size_v1(void)
{
dump_page_t *dp;
dp = (dump_page_t *)lkcd->dump_page;
return(dp->dp_size);
}
/*
* Return the current page's dp_flags.
*/
uint32_t
get_dp_flags_v1(void)
{
dump_page_t *dp;
dp = (dump_page_t *)lkcd->dump_page;
return(dp->dp_flags);
}
/*
* Return the current page's dp_address.
*/
uint64_t
get_dp_address_v1(void)
{
dump_page_t *dp;
dp = (dump_page_t *)lkcd->dump_page;
return(dp->dp_address);
}
/*
* console-only output for info regarding current page.
*/
void
dump_dump_page_v1(char *s, void *dpp)
{
dump_page_t *dp;
uint32_t flags;
int others;
console(s);
dp = (dump_page_t *)dpp;
others = 0;
console("dp_address: %llx ", dp->dp_address);
console("dp_size: %ld ", dp->dp_size);
console("dp_flags: %lx (", flags = dp->dp_flags);
if (flags & DUMP_COMPRESSED)
console("DUMP_COMPRESSED", others++);
if (flags & DUMP_RAW)
console("%sDUMP_RAW", others++ ? "|" : "");
if (flags & DUMP_END)
console("DUMP_END", others++ ? "|" : "");
console(")\n");
}
/*
* help -S output, or as specified by arg.
*/
void
dump_lkcd_environment_v1(ulong arg)
{
int others;
dump_header_t *dh;
dump_page_t *dp;
dh = (dump_header_t *)lkcd->dump_header;
dp = (dump_page_t *)lkcd->dump_page;
if (arg == LKCD_DUMP_HEADER_ONLY)
goto dump_header_only;
if (arg == LKCD_DUMP_PAGE_ONLY)
goto dump_page_only;
dump_header_only:
lkcd_print(" dump_header:\n");
lkcd_print(" dh_magic_number: %llx ",
dh->dh_magic_number);
if (dh->dh_magic_number == DUMP_MAGIC_NUMBER)
lkcd_print("(DUMP_MAGIC_NUMBER)\n");
else
lkcd_print("(?)\n");
lkcd_print(" dh_version: %d\n", dh->dh_version);
lkcd_print(" dh_header_size: %d\n", dh->dh_header_size);
lkcd_print(" dh_dump_level: %d\n", dh->dh_dump_level);
lkcd_print(" dh_page_size: %d\n", dh->dh_page_size);
lkcd_print(" dh_memory_size: %lld\n", dh->dh_memory_size);
lkcd_print(" dh_memory_start: %llx\n", dh->dh_memory_start);
lkcd_print(" dh_memory_end: %llx\n", dh->dh_memory_end);
lkcd_print(" dh_esp: %lx\n", dh->dh_esp);
lkcd_print(" dh_eip: %lx\n", dh->dh_eip);
lkcd_print(" dh_num_pages: %d\n", dh->dh_num_pages);
lkcd_print(" dh_panic_string: %s%s", dh->dh_panic_string,
dh && strstr(dh->dh_panic_string, "\n") ? "" : "\n");
lkcd_print(" dh_time: %s\n",
strip_linefeeds(ctime(&(dh->dh_time.tv_sec))));
lkcd_print(" dh_utsname:\n");
lkcd_print(" sysname: %s\n", dh->dh_utsname.sysname);
lkcd_print(" nodename: %s\n", dh->dh_utsname.nodename);
lkcd_print(" release: %s\n", dh->dh_utsname.release);
lkcd_print(" version: %s\n", dh->dh_utsname.version);
lkcd_print(" machine: %s\n", dh->dh_utsname.machine);
lkcd_print(" domainname: %s\n", dh->dh_utsname.domainname);
lkcd_print(" dh_current_task: %lx\n", dh->dh_current_task);
lkcd_print(" dh_regs:\n");
#ifdef PPC
lkcd_print(" (PowerPC register display TBD)\n");
#endif
#ifdef X86
lkcd_print(" ebx: %lx\n", dh->dh_regs.ebx);
lkcd_print(" ecx: %lx\n", dh->dh_regs.ecx);
lkcd_print(" edx: %lx\n", dh->dh_regs.edx);
lkcd_print(" esi: %lx\n", dh->dh_regs.esi);
lkcd_print(" edi: %lx\n", dh->dh_regs.edi);
lkcd_print(" eax: %lx\n", dh->dh_regs.eax);
lkcd_print(" xds: %x\n", dh->dh_regs.xds);
lkcd_print(" xes: %x\n", dh->dh_regs.xes);
lkcd_print(" orig_eax: %lx\n", dh->dh_regs.orig_eax);
lkcd_print(" eip: %lx\n", dh->dh_regs.eip);
lkcd_print(" xcs: %x\n", dh->dh_regs.xcs);
lkcd_print(" eflags: %lx\n", dh->dh_regs.eflags);
lkcd_print(" esp: %lx\n", dh->dh_regs.esp);
lkcd_print(" xss: %x\n", dh->dh_regs.xss);
#endif
if (arg == LKCD_DUMP_HEADER_ONLY)
return;
dump_page_only:
lkcd_print(" dump_page:\n");
lkcd_print(" dp_address: %llx\n", dp->dp_address);
lkcd_print(" dp_size: %ld\n", dp->dp_size);
lkcd_print(" dp_flags: %lx (", dp->dp_flags);
others = 0;
if (dp->dp_flags & DUMP_COMPRESSED)
lkcd_print("DUMP_COMPRESSED", others++);
if (dp->dp_flags & DUMP_RAW)
lkcd_print("%sDUMP_RAW", others++ ? "|" : "");
if (dp->dp_flags & DUMP_END)
lkcd_print("DUMP_END", others++ ? "|" : "");
lkcd_print(")\n");
}
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