1 /* Copyright (C) 2007 Red Hat, Inc.
2 This file is part of elfutils.
3
4 This file is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 elfutils is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
16
17 #include <ar.h>
18 #include <fcntl.h>
19 #include <libelf.h>
20 #include <stdio.h>
21 #include <unistd.h>
22
23
24 static int handle (const char *fname);
25
26
27 int
main(int argc,char * argv[])28 main (int argc, char *argv[])
29 {
30 elf_version (EV_CURRENT);
31
32 int result = 0;
33 if (argc == 1)
34 result = handle ("a.out");
35 else
36 for (int i = 1; i < argc; ++i)
37 result |= handle (argv[1]);
38
39 return result;
40 }
41
42
43 static int
handle(const char * fname)44 handle (const char *fname)
45 {
46 int fd = open (fname, O_RDONLY);
47 if (fd == -1)
48 {
49 printf ("cannot open '%s': %m\n", fname);
50 return 1;
51 }
52
53 Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
54 if (elf == NULL)
55 {
56 printf ("cannot get ELF handling for '%s': %s\n",
57 fname, elf_errmsg (-1));
58 close (fd);
59 return 1;
60 }
61
62 if (elf_kind (elf) != ELF_K_AR)
63 {
64 printf ("'%s' is no archive\n", fname);
65 elf_end (elf);
66 close (fd);
67 return 1;
68 }
69
70 printf ("%s:\n", fname);
71 Elf *subelf = NULL;
72 Elf_Cmd cmd = ELF_C_READ_MMAP;
73 while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
74 {
75 Elf_Arhdr *arhdr = elf_getarhdr (subelf);
76 if (arhdr == NULL)
77 {
78 printf ("cannot get archive header in '%s': %s\n",
79 fname, elf_errmsg (-1));
80 elf_end (subelf);
81 elf_end (elf);
82 close (fd);
83 return 1;
84 }
85
86 off_t off = elf_getaroff (subelf);
87
88 printf ("\nOffset %llu\n"
89 " Name %s\n"
90 " Date %ld\n"
91 " UID %d\n"
92 " GID %d\n"
93 " Mode %o\n"
94 " Size %lld\n",
95 (unsigned long long int) off,
96 arhdr->ar_name, (long int) arhdr->ar_date, (int) arhdr->ar_uid,
97 (int) arhdr->ar_gid,
98 (int) arhdr->ar_mode, (long long int) arhdr->ar_size);
99
100 cmd = elf_next (subelf);
101 elf_end (subelf);
102 }
103
104 close (fd);
105
106 return 0;
107 }
108