Line data Source code
1 : /* Return offset in archive for current file ELF.
2 : Copyright (C) 2005, 2008, 2015 Red Hat, Inc.
3 : This file is part of elfutils.
4 : Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.
5 :
6 : This file is free software; you can redistribute it and/or modify
7 : it under the terms of either
8 :
9 : * the GNU Lesser General Public License as published by the Free
10 : Software Foundation; either version 3 of the License, or (at
11 : your option) any later version
12 :
13 : or
14 :
15 : * the GNU General Public License as published by the Free
16 : Software Foundation; either version 2 of the License, or (at
17 : your option) any later version
18 :
19 : or both in parallel, as here.
20 :
21 : elfutils is distributed in the hope that it will be useful, but
22 : WITHOUT ANY WARRANTY; without even the implied warranty of
23 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
24 : General Public License for more details.
25 :
26 : You should have received copies of the GNU General Public License and
27 : the GNU Lesser General Public License along with this program. If
28 : not, see <http://www.gnu.org/licenses/>. */
29 :
30 : #ifdef HAVE_CONFIG_H
31 : # include <config.h>
32 : #endif
33 :
34 : #include <assert.h>
35 : #include <libelf.h>
36 : #include <stddef.h>
37 :
38 : #include "libelfP.h"
39 :
40 :
41 : int64_t
42 74 : elf_getaroff (Elf *elf)
43 : {
44 : /* Be gratious, the specs demand it. */
45 74 : if (elf == NULL || elf->parent == NULL)
46 : return ELF_C_NULL;
47 :
48 : /* We can be sure the parent is an archive. */
49 4 : Elf *parent = elf->parent;
50 4 : assert (parent->kind == ELF_K_AR);
51 :
52 4 : return elf->start_offset - sizeof (struct ar_hdr) - parent->start_offset;
53 : }
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