Line data Source code
1 : /* Retrieve uninterpreted file contents.
2 : Copyright (C) 1998, 1999, 2000, 2002, 2015 Red Hat, Inc.
3 : This file is part of elfutils.
4 : Contributed by Ulrich Drepper <drepper@redhat.com>, 1998.
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 <libelf.h>
35 : #include <stddef.h>
36 :
37 : #include "libelfP.h"
38 :
39 :
40 : char *
41 28 : elf_rawfile (Elf *elf, size_t *ptr)
42 : {
43 : char *result;
44 :
45 28 : if (elf == NULL)
46 : {
47 : /* No valid descriptor. */
48 0 : __libelf_seterrno (ELF_E_INVALID_HANDLE);
49 : error_out:
50 0 : if (ptr != NULL)
51 0 : *ptr = 0;
52 : return NULL;
53 : }
54 :
55 : /* If the file is not mmap'ed and not previously loaded, do it now. */
56 28 : if (elf->map_address == NULL && __libelf_readall (elf) == NULL)
57 : goto error_out;
58 :
59 : rwlock_rdlock (elf->lock);
60 28 : if (ptr != NULL)
61 28 : *ptr = elf->maximum_size;
62 :
63 28 : result = (char *) elf->map_address + elf->start_offset;
64 : rwlock_unlock (elf->lock);
65 :
66 28 : return result;
67 : }
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