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
|
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include "elf.h"
#include "i386.h"
#include "symbols.h"
#include "functions.h"
#include "process.h"
extern void read_config_file(const char *);
FILE * output = stderr;
int opt_d = 0;
int opt_i = 0;
unsigned long return_addr;
unsigned char return_value;
struct library_symbol * current_symbol;
static void usage(void)
{
fprintf(stderr,"Usage: ltrace [-d] [-o filename] command [arg ...]\n\n");
}
int main(int argc, char **argv)
{
int pid;
while ((argc>2) && (argv[1][0] == '-') && (argv[1][2] == '\0')) {
switch(argv[1][1]) {
case 'd': opt_d++;
break;
case 'o': output = fopen(argv[2], "w");
if (!output) {
fprintf(stderr, "Can't open %s for output: %s\n", argv[2], sys_errlist[errno]);
exit(1);
}
argc--; argv++;
break;
case 'i': opt_i++;
break;
default: fprintf(stderr, "Unknown option '%c'\n", argv[1][1]);
usage();
exit(1);
}
argc--; argv++;
}
if (argc<2) {
usage();
exit(1);
}
if (!read_elf(argv[1])) {
fprintf(stderr, "%s: Not dynamically linked\n", argv[1]);
exit(1);
}
init_sighandler();
if (opt_d>0) {
fprintf(output, "Reading config file(s)...\n");
}
read_config_file("/etc/ltrace.cfg");
read_config_file(".ltracerc");
pid = execute_process(argv[1], argv+1);
if (opt_d>0) {
fprintf(output, "pid %u launched\n", pid);
}
while(1) {
pause();
if (!list_of_processes) {
break;
}
}
exit(0);
}
|
