1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software developed by the Computer Systems
* Engineering group at Lawrence Berkeley Laboratory under DARPA contract
* BG 91-66 and contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)kvm_private.h 8.1 (Berkeley) 6/4/93
* $FreeBSD$
*/
#include <sys/endian.h>
#include <sys/linker_set.h>
#include <gelf.h>
struct kvm_arch {
int (*ka_probe)(kvm_t *);
int (*ka_initvtop)(kvm_t *);
void (*ka_freevtop)(kvm_t *);
int (*ka_kvatop)(kvm_t *, kvaddr_t, off_t *);
int (*ka_native)(kvm_t *);
};
#define KVM_ARCH(ka) DATA_SET(kvm_arch, ka)
struct __kvm {
struct kvm_arch *arch;
/*
* a string to be prepended to error messages
* provided for compatibility with sun's interface
* if this value is null, errors are saved in errbuf[]
*/
const char *program;
char *errp; /* XXX this can probably go away */
char errbuf[_POSIX2_LINE_MAX];
#define ISALIVE(kd) ((kd)->vmfd >= 0)
int pmfd; /* physical memory file (or crashdump) */
int vmfd; /* virtual memory file (-1 if crashdump) */
int nlfd; /* namelist file (e.g., /kernel) */
GElf_Ehdr nlehdr; /* ELF file header for namelist file */
int (*resolve_symbol)(const char *, kvaddr_t *);
struct kinfo_proc *procbase;
char *argspc; /* (dynamic) storage for argv strings */
int arglen; /* length of the above */
char **argv; /* (dynamic) storage for argv pointers */
int argc; /* length of above (not actual # present) */
char *argbuf; /* (dynamic) temporary storage */
/*
* Kernel virtual address translation state. This only gets filled
* in for dead kernels; otherwise, the running kernel (i.e. kmem)
* will do the translations for us. It could be big, so we
* only allocate it if necessary.
*/
struct vmstate *vmst;
int rawdump; /* raw dump format */
int vnet_initialized; /* vnet fields set up */
kvaddr_t vnet_start; /* start of kernel's vnet region */
kvaddr_t vnet_stop; /* stop of kernel's vnet region */
kvaddr_t vnet_current; /* vnet we're working with */
kvaddr_t vnet_base; /* vnet base of current vnet */
/*
* Dynamic per-CPU kernel memory. We translate symbols, on-demand,
* to the data associated with dpcpu_curcpu, set with
* kvm_dpcpu_setcpu().
*/
int dpcpu_initialized; /* dpcpu fields set up */
kvaddr_t dpcpu_start; /* start of kernel's dpcpu region */
kvaddr_t dpcpu_stop; /* stop of kernel's dpcpu region */
u_int dpcpu_maxcpus; /* size of base array */
uintptr_t *dpcpu_off; /* base array, indexed by CPU ID */
u_int dpcpu_curcpu; /* CPU we're currently working with */
kvaddr_t dpcpu_curoff; /* dpcpu base of current CPU */
};
/*
* Page table hash used by minidump backends to map physical addresses
* to file offsets.
*/
struct hpte {
struct hpte *next;
uint64_t pa;
off_t off;
};
#define HPT_SIZE 1024
struct hpt {
struct hpte *hpt_head[HPT_SIZE];
};
/*
* Functions used internally by kvm, but across kvm modules.
*/
static inline uint32_t
_kvm32toh(kvm_t *kd, uint32_t val)
{
if (kd->nlehdr.e_ident[EI_DATA] == ELFDATA2LSB)
return (le32toh(val));
else
return (be32toh(val));
}
static inline uint64_t
_kvm64toh(kvm_t *kd, uint64_t val)
{
if (kd->nlehdr.e_ident[EI_DATA] == ELFDATA2LSB)
return (le64toh(val));
else
return (be64toh(val));
}
void _kvm_err(kvm_t *kd, const char *program, const char *fmt, ...)
__printflike(3, 4);
void _kvm_freeprocs(kvm_t *kd);
void *_kvm_malloc(kvm_t *kd, size_t);
int _kvm_nlist(kvm_t *, struct kvm_nlist *, int);
void *_kvm_realloc(kvm_t *kd, void *, size_t);
void _kvm_syserr (kvm_t *kd, const char *program, const char *fmt, ...)
__printflike(3, 4);
int _kvm_vnet_selectpid(kvm_t *, pid_t);
int _kvm_vnet_initialized(kvm_t *, int);
kvaddr_t _kvm_vnet_validaddr(kvm_t *, kvaddr_t);
int _kvm_dpcpu_initialized(kvm_t *, int);
kvaddr_t _kvm_dpcpu_validaddr(kvm_t *, kvaddr_t);
int _kvm_probe_elf_kernel(kvm_t *, int, int);
int _kvm_is_minidump(kvm_t *);
int _kvm_read_core_phdrs(kvm_t *, size_t *, GElf_Phdr **);
void _kvm_hpt_init(kvm_t *, struct hpt *, void *, size_t, off_t, int, int);
off_t _kvm_hpt_find(struct hpt *, uint64_t);
void _kvm_hpt_free(struct hpt *);
|
