kvm_private.h revision 312382 
1/*-
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software developed by the Computer Systems
6 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
7 * BG 91-66 and contributed to Berkeley.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)kvm_private.h	8.1 (Berkeley) 6/4/93
34 * $FreeBSD: stable/10/lib/libkvm/kvm_private.h 312382 2017-01-18 14:14:00Z avg $
35 */
36
37struct __kvm {
38	/*
39	 * a string to be prepended to error messages
40	 * provided for compatibility with sun's interface
41	 * if this value is null, errors are saved in errbuf[]
42	 */
43	const char *program;
44	char	*errp;		/* XXX this can probably go away */
45	char	errbuf[_POSIX2_LINE_MAX];
46#define ISALIVE(kd) ((kd)->vmfd >= 0)
47	int	pmfd;		/* physical memory file (or crashdump) */
48	int	vmfd;		/* virtual memory file (-1 if crashdump) */
49	int	unused;		/* was: swap file (e.g., /dev/drum) */
50	int	nlfd;		/* namelist file (e.g., /kernel) */
51	struct kinfo_proc *procbase;
52	char	*argspc;	/* (dynamic) storage for argv strings */
53	int	arglen;		/* length of the above */
54	char	**argv;		/* (dynamic) storage for argv pointers */
55	int	argc;		/* length of above (not actual # present) */
56	char	*argbuf;	/* (dynamic) temporary storage */
57	/*
58	 * Kernel virtual address translation state.  This only gets filled
59	 * in for dead kernels; otherwise, the running kernel (i.e. kmem)
60	 * will do the translations for us.  It could be big, so we
61	 * only allocate it if necessary.
62	 */
63	struct vmstate *vmst;
64	int	rawdump;	/* raw dump format */
65	int	writable;	/* physical memory is writable */
66
67	int		vnet_initialized;	/* vnet fields set up */
68	uintptr_t	vnet_start;	/* start of kernel's vnet region */
69	uintptr_t	vnet_stop;	/* stop of kernel's vnet region */
70	uintptr_t	vnet_current;	/* vnet we're working with */
71	uintptr_t	vnet_base;	/* vnet base of current vnet */
72
73	/*
74	 * Dynamic per-CPU kernel memory.  We translate symbols, on-demand,
75	 * to the data associated with dpcpu_curcpu, set with
76	 * kvm_dpcpu_setcpu().
77	 */
78	int		dpcpu_initialized;	/* dpcpu fields set up */
79	uintptr_t	dpcpu_start;	/* start of kernel's dpcpu region */
80	uintptr_t	dpcpu_stop;	/* stop of kernel's dpcpu region */
81	u_int		dpcpu_maxcpus;	/* size of base array */
82	uintptr_t	*dpcpu_off;	/* base array, indexed by CPU ID */
83	u_int		dpcpu_curcpu;	/* CPU we're currently working with */
84	uintptr_t	dpcpu_curoff;	/* dpcpu base of current CPU */
85};
86
87/*
88 * Functions used internally by kvm, but across kvm modules.
89 */
90void	 _kvm_err(kvm_t *kd, const char *program, const char *fmt, ...)
91	    __printflike(3, 4);
92void	 _kvm_freeprocs(kvm_t *kd);
93void	 _kvm_freevtop(kvm_t *);
94int	 _kvm_initvtop(kvm_t *);
95int	 _kvm_kvatop(kvm_t *, u_long, off_t *);
96void	*_kvm_malloc(kvm_t *kd, size_t);
97int	 _kvm_nlist(kvm_t *, struct nlist *, int);
98void	*_kvm_realloc(kvm_t *kd, void *, size_t);
99void	 _kvm_syserr (kvm_t *kd, const char *program, const char *fmt, ...)
100	    __printflike(3, 4);
101int	 _kvm_uvatop(kvm_t *, const struct proc *, u_long, u_long *);
102int	 _kvm_vnet_selectpid(kvm_t *, pid_t);
103int	 _kvm_vnet_initialized(kvm_t *, int);
104uintptr_t _kvm_vnet_validaddr(kvm_t *, uintptr_t);
105int	 _kvm_dpcpu_initialized(kvm_t *, int);
106uintptr_t _kvm_dpcpu_validaddr(kvm_t *, uintptr_t);
107
108#if defined(__amd64__) || defined(__i386__) || defined(__arm__) || \
109    defined(__mips__)
110void	 _kvm_minidump_freevtop(kvm_t *);
111int	 _kvm_minidump_initvtop(kvm_t *);
112int	 _kvm_minidump_kvatop(kvm_t *, u_long, off_t *);
113#endif
114