kvm_private.h revision 1.11 
1/*	$NetBSD: kvm_private.h,v 1.11 2003/01/18 10:40:41 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software developed by the Computer Systems
8 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
9 * BG 91-66 and contributed to Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 *	@(#)kvm_private.h	8.1 (Berkeley) 6/4/93
40 */
41
42struct __kvm {
43	/*
44	 * a string to be prepended to error messages
45	 * provided for compatibility with sun's interface
46	 * if this value is null, errors are saved in errbuf[]
47	 */
48	const char *program;
49	char	*errp;		/* XXX this can probably go away */
50	char	errbuf[_POSIX2_LINE_MAX];
51	DB	*db;
52	int	pmfd;		/* physical memory file (or crashdump) */
53	int	vmfd;		/* virtual memory file (-1 if crashdump) */
54	int	swfd;		/* swap file (e.g., /dev/drum) */
55	int	nlfd;		/* namelist file (e.g., /vmunix) */
56	char	alive;		/* live kernel? */
57	struct kinfo_proc *procbase;
58	struct kinfo_proc2 *procbase2;
59	struct kinfo_lwp *lwpbase;
60	u_long	usrstack;		/* address of end of user stack */
61	u_long	min_uva, max_uva;	/* min/max user virtual address */
62	int	nbpg;		/* page size */
63	char	*swapspc;	/* (dynamic) storage for swapped pages */
64	char	*argspc, *argbuf; /* (dynamic) storage for argv strings */
65	int	arglen;		/* length of the above */
66	char	**argv;		/* (dynamic) storage for argv pointers */
67	int	argc;		/* length of above (not actual # present) */
68
69	/*
70	 * Header structures for kernel dumps. Only gets filled in for
71	 * dead kernels.
72	 */
73	struct kcore_hdr	*kcore_hdr;
74	size_t	cpu_dsize;
75	void	*cpu_data;
76	off_t	dump_off;	/* Where the actual dump starts	*/
77
78	/*
79	 * Kernel virtual address translation state.  This only gets filled
80	 * in for dead kernels; otherwise, the running kernel (i.e. kmem)
81	 * will do the translations for us.  It could be big, so we
82	 * only allocate it if necessary.
83	 */
84	struct vmstate *vmst; /* XXX: should become obsoleted */
85	/*
86	 * These kernel variables are used for looking up user addresses,
87	 * and are cached for efficiency.
88	 */
89	struct pglist *vm_page_buckets;
90	int vm_page_hash_mask;
91};
92
93/* Levels of aliveness */
94#define	KVM_ALIVE_DEAD		0	/* dead, working from core file */
95#define	KVM_ALIVE_FILES		1	/* alive, working from open kmem/drum */
96#define	KVM_ALIVE_SYSCTL	2	/* alive, sysctl-type calls only */
97
98#define	ISALIVE(kd)	((kd)->alive != KVM_ALIVE_DEAD)
99#define	ISKMEM(kd)	((kd)->alive == KVM_ALIVE_FILES)
100#define	ISSYSCTL(kd)	((kd)->alive == KVM_ALIVE_SYSCTL || ISKMEM(kd))
101
102/*
103 * Functions used internally by kvm, but across kvm modules.
104 */
105void	 _kvm_err __P((kvm_t *kd, const char *program, const char *fmt, ...))
106	__attribute__((__format__(__printf__, 3, 4)));
107int	 _kvm_dump_mkheader __P((kvm_t *kd_live, kvm_t *kd_dump));
108void	 _kvm_freeprocs __P((kvm_t *kd));
109void	 _kvm_freevtop __P((kvm_t *));
110int	 _kvm_mdopen __P((kvm_t *));
111int	 _kvm_initvtop __P((kvm_t *));
112int	 _kvm_kvatop __P((kvm_t *, u_long, u_long *));
113void	*_kvm_malloc __P((kvm_t *kd, size_t));
114off_t	 _kvm_pa2off __P((kvm_t *, u_long));
115void	*_kvm_realloc __P((kvm_t *kd, void *, size_t));
116void	 _kvm_syserr
117	    __P((kvm_t *kd, const char *program, const char *fmt, ...))
118	    __attribute__((__format__(__printf__, 3, 4)));
119
120