aboutsummaryrefslogtreecommitdiffstats
path: root/common.h
blob: 458d4f9ae548d898b70f6dadfda759b37b880f73 (plain) (blame)
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
/* See LICENSE file for copyright and license details. */
#if !defined __x86_64__ || defined __IPL32__
# error "This program is only implemented for x86-64"
#endif

#include <sys/ptrace.h>
#include <sys/syscall.h>
#include <sys/uio.h>
#include <sys/user.h>
#include <sys/wait.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <signal.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "arg.h"
#include "list-errnos.h"
#include "list-signums.h"


#ifndef ERESTARTSYS
# define ERESTARTSYS    512
# define ALSO_ERESTARTSYS
#endif
#ifndef ERESTARTNOINTR
# define ERESTARTNOINTR 513
# define ALSO_ERESTARTNOINTR
#endif
#ifndef ERESTARTNOHAND
# define ERESTARTNOHAND 514
# define ALSO_ERESTARTNOHAND
#endif
#ifndef ERESTART_RESTARTBLOCK
# define ERESTART_RESTARTBLOCK 516
# define ALSO_ERESTART_RESTARTBLOCK
#endif


struct process;

enum type {
	Unknown,
	Void,
	Int,
	UInt,
	OInt,
	XInt,
	Long,
	ULong,
	OLong,
	XLong,
	LLong,
	ULLong,
	OLLong,
	XLLong,
	Ptr
};

enum state {
	Normal,
	Syscall,
	CloneChild,
	ForkChild,
	VforkChild,
	CloneParent,
	ForkParent,
	VforkParent,
	Exec
};

struct output {
	int ells;
	char fmt;
	unsigned long long int size;
	void (*func)(struct process *, size_t);
};

struct process {
	pid_t pid;
	pid_t thread_leader;
	struct process *next;
	struct process *prev;
	enum state state;
	int silent_until_execed; /* 2 until exec, 1 until "= 0", 0 afterwards */

	/* Syscall data */
	unsigned long long int scall;
	unsigned long long int args[6];
	unsigned long long int ret;
	enum type ret_type;
	struct output outputs[6];

	/* vfork(2) data */
	struct process *continue_on_exit;
	struct process *vfork_waiting_on;
};


/* consts.c */
const char *get_errno_name(int err);
const char *get_signum_name(int sig);

/* memory.c */
char *get_string(pid_t pid, unsigned long int addr, size_t *lenp, const char **errorp);
int get_struct(pid_t pid, unsigned long int addr, void *out, size_t size, const char **errorp);
char *get_memory(pid_t pid, unsigned long int addr, size_t n, const char **errorp);
char *escape_memory(char *str, size_t m);

/* print.c */
void print_systemcall(struct process *proc);
void print_systemcall_exit(struct process *proc);

/* process.c */
void init_process_list(void);
struct process *find_process(pid_t pid);
struct process *add_process(pid_t pid, unsigned long int trace_options);
void remove_process(struct process *proc);

/* util.c */
void setup_trace_output(FILE *fp, int multiprocess);
void tprintf(struct process *proc, const char *fmt, ...);
void weprintf(const char *fmt, ...);
#define eprintf(...) (weprintf(__VA_ARGS__), exit(1))
#define eprintf_and_kill(PID, ...) (weprintf(__VA_ARGS__), kill((PID), SIGKILL), exit(1))
FILE *xfopen(const char *file, const char *mode);