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
|
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/param.h>
#include <signal.h>
#include <sys/wait.h>
#include "ltrace.h"
#include "output.h"
#include "read_config_file.h"
#include "options.h"
char * command = NULL;
struct process * list_of_processes = NULL;
int exiting=0; /* =1 if a SIGINT or SIGTERM has been received */
static void normal_exit(void);
static void signal_exit(int);
static pid_t my_pid;
int main(int argc, char **argv)
{
struct opt_p_t * opt_p_tmp;
my_pid = getpid();
atexit(normal_exit);
signal(SIGINT,signal_exit); /* Detach processes when interrupted */
signal(SIGTERM,signal_exit); /* ... or killed */
argv = process_options(argc, argv);
read_config_file("/etc/ltrace.conf");
if (getenv("HOME")) {
char path[PATH_MAX];
sprintf(path, getenv("HOME")); /* FIXME: buffer overrun */
strcat(path, "/.ltrace.conf");
read_config_file(path);
}
if (command) {
execute_program(open_program(command), argv);
}
opt_p_tmp = opt_p;
while (opt_p_tmp) {
open_pid(opt_p_tmp->pid, 1);
opt_p_tmp = opt_p_tmp->next;
}
while(1) {
process_event(wait_for_something());
}
}
static void signal_alarm(int sig)
{
struct process * tmp = list_of_processes;
signal(SIGALRM,SIG_DFL);
while(tmp) {
struct opt_p_t * tmp2 = opt_p;
while(tmp2) {
if (tmp->pid == tmp2->pid) {
tmp = tmp->next;
if (!tmp) {
return;
}
break;
}
tmp2 = tmp2->next;
}
if (opt_d>1) {
output_line(0,"Sending SIGSTOP to process %u\n",tmp->pid);
}
kill(tmp->pid, SIGSTOP);
tmp = tmp->next;
}
}
static void signal_exit(int sig)
{
exiting=1;
if (opt_d) {
output_line(0,"Received interrupt signal; exiting...");
}
signal(SIGINT,SIG_IGN);
signal(SIGTERM,SIG_IGN);
signal(SIGALRM,signal_alarm);
if (opt_p) {
struct opt_p_t * tmp = opt_p;
while(tmp) {
if (opt_d>1) {
output_line(0,"Sending SIGSTOP to process %u\n",tmp->pid);
}
kill(tmp->pid, SIGSTOP);
tmp = tmp->next;
}
}
alarm(1);
}
static void normal_exit(void)
{
output_line(0,0);
}
|
