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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_DUMPHDR_H
#define _SYS_DUMPHDR_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/utsname.h>
#include <sys/log.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* The dump header describes the contents of a crash dump. Two headers
* are written out: one at the beginning of the dump, and the other at
* the very end of the dump device. The terminal header is at a known
* location (end of device) so we can always find it. The initial header
* is redundant, but helps savecore(1M) determine whether the dump has been
* overwritten by swap activity. See dumpadm(1M) for dump configuration.
*/
#define DUMP_MAGIC 0xdefec8edU /* dump magic number */
#define DUMP_VERSION 9 /* version of this dumphdr */
#define DUMP_WORDSIZE (sizeof (long) * NBBY) /* word size (32 or 64) */
#define DUMP_PANICSIZE 200 /* Max panic string copied */
#define DUMP_COMPRESS_RATIO 2 /* conservative; usually 2.5+ */
#define DUMP_OFFSET 65536 /* pad at start/end of dev */
#define DUMP_LOGSIZE (2 * LOG_HIWAT) /* /dev/log message save area */
#define DUMP_ERPTSIZE (P2ROUNDUP( \
(ERPT_DATA_SZ / 2) * \
(ERPT_EVCH_MAX + \
ERPT_MAX_ERRS * ERPT_HIWAT), \
DUMP_OFFSET)) /* ereport save area */
typedef struct dumphdr {
uint32_t dump_magic; /* magic number */
uint32_t dump_version; /* version number */
uint32_t dump_flags; /* flags; see below */
uint32_t dump_wordsize; /* 32 or 64 */
offset_t dump_start; /* starting offset on dump device */
offset_t dump_ksyms; /* offset of compressed symbol table */
offset_t dump_pfn; /* offset of pfn table for all pages */
offset_t dump_map; /* offset of page translation map */
offset_t dump_data; /* offset of actual dump data */
struct utsname dump_utsname; /* copy of utsname structure */
char dump_platform[SYS_NMLN]; /* platform name (uname -i) */
char dump_panicstring[DUMP_PANICSIZE]; /* copy of panicstr */
time_t dump_crashtime; /* time of crash */
long dump_pageshift; /* log2(pagesize) */
long dump_pagesize; /* pagesize */
long dump_hashmask; /* page translation hash mask */
long dump_nvtop; /* number of vtop table entries */
pgcnt_t dump_npages; /* number of data pages */
size_t dump_ksyms_size; /* kernel symbol table size */
size_t dump_ksyms_csize; /* compressed symbol table size */
} dumphdr_t;
/*
* Values for dump_flags
*/
#define DF_VALID 0x00000001 /* Dump is valid (savecore clears) */
#define DF_COMPLETE 0x00000002 /* All pages present as configured */
#define DF_LIVE 0x00000004 /* Dump was taken on a live system */
#define DF_KERNEL 0x00010000 /* Contains kernel pages only */
#define DF_ALL 0x00020000 /* Contains all pages */
#define DF_CURPROC 0x00040000 /* Contains kernel + cur proc pages */
#define DF_CONTENT 0xffff0000 /* The set of all dump content flags */
/*
* Dump translation map hash table entry.
*/
typedef struct dump_map {
offset_t dm_first;
offset_t dm_next;
offset_t dm_data;
struct as *dm_as;
uintptr_t dm_va;
} dump_map_t;
/*
* Dump translation map hash function.
*/
#define DUMP_HASH(dhp, as, va) \
((((uintptr_t)(as) >> 3) + ((va) >> (dhp)->dump_pageshift)) & \
(dhp)->dump_hashmask)
#ifdef _KERNEL
extern kmutex_t dump_lock;
extern struct vnode *dumpvp;
extern u_offset_t dumpvp_size;
extern struct dumphdr *dumphdr;
extern int dump_conflags;
extern char *dumppath;
extern int dump_timeout;
extern int dump_timeleft;
extern int dump_ioerr;
extern int sync_timeout;
extern int sync_timeleft;
extern int dumpinit(struct vnode *, char *, int);
extern void dumpfini(void);
extern void dump_resize(void);
extern void dump_page(pfn_t);
extern void dump_addpage(struct as *, void *, pfn_t);
extern void dumpsys(void);
extern void dump_messages(void);
extern void dump_ereports(void);
extern void dumpvp_write(const void *, size_t);
extern int dumpvp_resize(void);
extern int dump_plat_addr(void);
extern void dump_plat_pfn(void);
extern int dump_plat_data(void *);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DUMPHDR_H */
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