1/* Copyright (C) 2006 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#ifdef HAVE_CONFIG_H
18# include <config.h>
19#endif
20
21#include <errno.h>
22#include <error.h>
23#include <stdio.h>
24#include <fcntl.h>
25#include <unistd.h>
26#include <libelf.h>
27
28int
29main (int argc __attribute__ ((unused)), char *argv[])
30{
31  int fd = open (argv[1], O_RDWR);
32  if (fd < 0)
33    error (2, errno, "open: %s", argv[1]);
34
35  if (elf_version (EV_CURRENT) == EV_NONE)
36    error (1, 0, "libelf version mismatch");
37
38  Elf *elf = elf_begin (fd, ELF_C_RDWR_MMAP, NULL);
39  if (elf == NULL)
40    error (1, 0, "elf_begin: %s", elf_errmsg (-1));
41
42  if (elf_update (elf, ELF_C_WRITE) < 0)
43    error (1, 0, "elf_update: %s", elf_errmsg (-1));
44
45  elf_end (elf);
46  close (fd);
47
48  return 0;
49}
50