scnnames.c revision 593c365a822e505dae3aaa4d8d66eca333911624 
1/* Copyright (C) 1998, 1999, 2000, 2002 Red Hat, Inc.
2   Written by Ulrich Drepper <drepper@redhat.com>, 1998.
3
4   This program is Open Source software; you can redistribute it and/or
5   modify it under the terms of the Open Software License version 1.0 as
6   published by the Open Source Initiative.
7
8   You should have received a copy of the Open Software License along
9   with this program; if not, you may obtain a copy of the Open Software
10   License version 1.0 from http://www.opensource.org/licenses/osl.php or
11   by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
12   3001 King Ranch Road, Ukiah, CA 95482.   */
13
14#include <config.h>
15
16#include <errno.h>
17#include <fcntl.h>
18#include <gelf.h>
19#include <stdlib.h>
20#include <stdio.h>
21#include <string.h>
22
23int
24main (int argc, char *argv[])
25{
26  Elf *elf;
27  int fd;
28  GElf_Ehdr ehdr;
29  size_t strndx;
30  Elf_Scn *scn;
31
32  fd = open (argv[1], O_RDONLY);
33  if (fd == -1)
34    {
35      printf ("cannot open \"%s\": %s\n", argv[1], strerror (errno));
36      exit (1);
37    }
38
39  elf_version (EV_CURRENT);
40
41  elf = elf_begin (fd, ELF_C_READ, NULL);
42  if (elf == NULL)
43    {
44      printf ("cannot open ELF file: %s\n", elf_errmsg (-1));
45      exit (1);
46    }
47
48  if (elf_kind (elf) != ELF_K_ELF)
49    {
50      printf ("\"%s\" is not an ELF file\n", argv[1]);
51      exit (1);
52    }
53
54  if (gelf_getehdr (elf, &ehdr) == NULL)
55    {
56      printf ("cannot get the ELF header: %s\n", elf_errmsg (-1));
57      exit (1);
58    }
59
60  strndx = ehdr.e_shstrndx;
61
62  scn = NULL;
63  while ((scn = elf_nextscn (elf, scn)) != NULL)
64    {
65      char *name = NULL;
66      GElf_Shdr shdr;
67
68      if (gelf_getshdr (scn, &shdr) != NULL)
69	name = elf_strptr (elf, strndx, (size_t) shdr.sh_name);
70
71      printf ("section: `%s'\n", name);
72    }
73
74  if (elf_end (elf) != 0)
75    {
76      printf ("error while freeing ELF descriptor: %s\n", elf_errmsg (-1));
77      exit (1);
78    }
79
80  return 0;
81}
82