mirror of
https://github.com/openharmony/third_party_elfutils.git
synced 2026-07-20 03:53:42 -04:00
Mark Wielaard
5ddb50af4a
Elf_Data of a compressed section has type ELF_T_CHDR. This type can be xlated to the file or memory representation. This will make sure the Chdr is in the correct endianess. The compressed data following the Chdr isn't translated. Signed-off-by: Mark Wielaard <mjw@redhat.com>
125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
/* Copyright (C) 2015 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include ELFUTILS_HEADER(elf)
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#include ELFUTILS_HEADER(dwelf)
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#include <gelf.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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int
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main (int argc, char *argv[])
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{
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int result = 0;
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int cnt;
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elf_version (EV_CURRENT);
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for (cnt = 1; cnt < argc; ++cnt)
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{
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int fd = open (argv[cnt], O_RDONLY);
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Elf *elf = elf_begin (fd, ELF_C_READ, NULL);
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if (elf == NULL)
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{
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printf ("%s not usable %s\n", argv[cnt], elf_errmsg (-1));
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result = 1;
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close (fd);
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continue;
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}
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size_t shdrstrndx;
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if (elf_getshdrstrndx (elf, &shdrstrndx) == -1)
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{
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printf ("elf_getshdrstrnd failed %s\n", elf_errmsg (-1));
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result = 1;
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close (fd);
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continue;
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}
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Elf_Scn *scn = NULL;
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while ((scn = elf_nextscn (elf, scn)) != NULL)
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{
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int idx = elf_ndxscn (scn);
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GElf_Shdr shdr;
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if (gelf_getshdr (scn, &shdr) == NULL)
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{
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printf ("gelf_getshdr failed: %s\n", elf_errmsg (-1));
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result = 1;
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break;
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}
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if ((shdr.sh_flags & SHF_COMPRESSED) != 0)
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{
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GElf_Chdr chdr;
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if (gelf_getchdr (scn, &chdr) == NULL)
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{
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printf ("gelf_getchdr failed: %s\n", elf_errmsg (-1));
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result = 1;
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break;
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}
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printf ("section %d: ELF Compressed ch_type: %" PRId32
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", ch_size: %" PRIx64 ", ch_addralign: %" PRIx64 "\n",
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idx, chdr.ch_type, chdr.ch_size, chdr.ch_addralign);
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}
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else
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{
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const char *sname = elf_strptr (elf, shdrstrndx, shdr.sh_name);
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if (sname == NULL)
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{
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printf ("couldn't get section name: %s\n", elf_errmsg (-1));
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result = 1;
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break;
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}
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/* This duplicates what the dwelfgnucompressed testcase does. */
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if (strncmp(".zdebug", sname, strlen (".zdebug")) == 0)
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{
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ssize_t size;
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if ((size = dwelf_scn_gnu_compressed_size (scn)) == -1)
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{
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printf ("dwelf_scn_gnu_compressed_size failed: %s\n",
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elf_errmsg (-1));
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result = 1;
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break;
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}
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printf ("section %d: GNU Compressed size: %zx\n", idx, size);
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}
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else
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printf ("section %d: NOT Compressed\n", idx);
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}
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}
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elf_end (elf);
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close (fd);
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}
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return result;
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}
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