Retro68/elfutils/tests/elfgetchdr.c

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/* Copyright (C) 2015 Red Hat, Inc.
This file is part of elfutils.
This file is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
elfutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <inttypes.h>
#include ELFUTILS_HEADER(elf)
#include ELFUTILS_HEADER(dwelf)
#include <gelf.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
int
main (int argc, char *argv[])
{
int result = 0;
int cnt;
elf_version (EV_CURRENT);
for (cnt = 1; cnt < argc; ++cnt)
{
int fd = open (argv[cnt], O_RDONLY);
Elf *elf = elf_begin (fd, ELF_C_READ, NULL);
if (elf == NULL)
{
printf ("%s not usable %s\n", argv[cnt], elf_errmsg (-1));
result = 1;
close (fd);
continue;
}
size_t shdrstrndx;
if (elf_getshdrstrndx (elf, &shdrstrndx) == -1)
{
printf ("elf_getshdrstrnd failed %s\n", elf_errmsg (-1));
result = 1;
close (fd);
continue;
}
Elf_Scn *scn = NULL;
while ((scn = elf_nextscn (elf, scn)) != NULL)
{
int idx = elf_ndxscn (scn);
GElf_Shdr shdr;
if (gelf_getshdr (scn, &shdr) == NULL)
{
printf ("gelf_getshdr failed: %s\n", elf_errmsg (-1));
result = 1;
break;
}
if ((shdr.sh_flags & SHF_COMPRESSED) != 0)
{
GElf_Chdr chdr;
if (gelf_getchdr (scn, &chdr) == NULL)
{
printf ("gelf_getchdr failed: %s\n", elf_errmsg (-1));
result = 1;
break;
}
printf ("section %d: ELF Compressed ch_type: %" PRId32
", ch_size: %" PRIx64 ", ch_addralign: %" PRIx64 "\n",
idx, chdr.ch_type, chdr.ch_size, chdr.ch_addralign);
}
else
{
const char *sname = elf_strptr (elf, shdrstrndx, shdr.sh_name);
if (sname == NULL)
{
printf ("couldn't get section name: %s\n", elf_errmsg (-1));
result = 1;
break;
}
/* This duplicates what the dwelfgnucompressed testcase does. */
if (strncmp(".zdebug", sname, strlen (".zdebug")) == 0)
{
ssize_t size;
if ((size = dwelf_scn_gnu_compressed_size (scn)) == -1)
{
printf ("dwelf_scn_gnu_compressed_size failed: %s\n",
elf_errmsg (-1));
result = 1;
break;
}
printf ("section %d: GNU Compressed size: %zx\n", idx, size);
}
else
printf ("section %d: NOT Compressed\n", idx);
}
}
elf_end (elf);
close (fd);
}
return result;
}