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
|
#include <ar.h>
#include <fcntl.h>
#include <libelf.h>
#include <stdio.h>
#include <unistd.h>
static int handle (const char *fname);
int
main (int argc, char *argv[])
{
elf_version (EV_CURRENT);
int result = 0;
if (argc == 1)
result = handle ("a.out");
else
for (int i = 1; i < argc; ++i)
result |= handle (argv[1]);
return result;
}
static int
handle (const char *fname)
{
int fd = open (fname, O_RDONLY);
if (fd == -1)
{
printf ("cannot open '%s': %m\n", fname);
return 1;
}
Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
if (elf == NULL)
{
printf ("cannot get ELF handling for '%s': %s\n",
fname, elf_errmsg (-1));
close (fd);
return 1;
}
if (elf_kind (elf) != ELF_K_AR)
{
printf ("'%s' is no archive\n", fname);
elf_end (elf);
close (fd);
return 1;
}
printf ("%s:\n", fname);
Elf *subelf = NULL;
Elf_Cmd cmd = ELF_C_READ_MMAP;
while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
{
Elf_Arhdr *arhdr = elf_getarhdr (subelf);
if (arhdr == NULL)
{
printf ("cannot get archive header in '%s': %s\n",
fname, elf_errmsg (-1));
elf_end (subelf);
elf_end (elf);
close (fd);
return 1;
}
off_t off = elf_getaroff (subelf);
printf ("\nOffset %llu\n"
" Name %s\n"
" Date %ld\n"
" UID %d\n"
" GID %d\n"
" Mode %o\n"
" Size %lld\n",
(unsigned long long int) off,
arhdr->ar_name, (long int) arhdr->ar_date, (int) arhdr->ar_uid,
(int) arhdr->ar_gid,
(int) arhdr->ar_mode, (long long int) arhdr->ar_size);
cmd = elf_next (subelf);
elf_end (subelf);
}
close (fd);
return 0;
}
|
