82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
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/* Test program for dwelf_elf_gnu_build_id, print build ID.
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Copyright (C) 2014 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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#include <config.h>
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#include <assert.h>
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#include <inttypes.h>
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#include <err.h>
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#include <errno.h>
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#include ELFUTILS_HEADER(elf)
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#include ELFUTILS_HEADER(dwelf)
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.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 <unistd.h>
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#include "system.h"
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int
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main (int argc, char *argv[])
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{
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if (argc < 2)
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error (EXIT_FAILURE, 0, "No input file given");
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elf_version (EV_CURRENT);
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for (int i = 1; i < argc; i++)
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{
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const char *file = argv[i];
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int fd = open (file, O_RDONLY);
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if (fd < 0)
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error (EXIT_FAILURE, errno, "couldn't open file '%s'", file);
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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: elf_begin failed: %s\n", file, elf_errmsg (-1));
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close (fd);
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continue;
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}
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const void *build_id;
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ssize_t len = dwelf_elf_gnu_build_id (elf, &build_id);
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switch (len)
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{
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case 0:
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printf ("%s: <no NT_GNU_BUILD_ID note>\n", file);
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break;
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case -1:
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errx (1, "dwelf_elf_gnu_build_id (%s): %s",
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file, elf_errmsg (-1));
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default:
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printf ("%s: build ID: ", file);
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const unsigned char *p = build_id;
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const unsigned char *end = p + len;
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while (p < end)
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printf("%02x", (unsigned)*p++);
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putchar('\n');
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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 0;
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}
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