103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes/* Test program for dwelf_elf_gnu_build_id, print build ID. 203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Copyright (C) 2014 Red Hat, Inc. 303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is part of elfutils. 403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is free software; you can redistribute it and/or modify 603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes it under the terms of the GNU General Public License as published by 703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes the Free Software Foundation; either version 3 of the License, or 803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (at your option) any later version. 903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elfutils is distributed in the hope that it will be useful, but 1103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes WITHOUT ANY WARRANTY; without even the implied warranty of 1203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes GNU General Public License for more details. 1403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes You should have received a copy of the GNU General Public License 1603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes along with this program. If not, see <http://www.gnu.org/licenses/>. */ 1703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <config.h> 1903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <assert.h> 2003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <inttypes.h> 2103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <err.h> 2203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <errno.h> 2303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include ELFUTILS_HEADER(elf) 2403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include ELFUTILS_HEADER(dwelf) 2503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <stdio.h> 2603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <error.h> 2703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <string.h> 2803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <stdlib.h> 2903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <sys/types.h> 3003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <sys/stat.h> 3103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <fcntl.h> 3203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <unistd.h> 3303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 3403333823c75a1c1887e923828113a1b0fd12020cElliott Hughesint 3503333823c75a1c1887e923828113a1b0fd12020cElliott Hughesmain (int argc, char *argv[]) 3603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes{ 3703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (argc < 2) 3803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes error (EXIT_FAILURE, 0, "No input file given"); 3903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 4003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elf_version (EV_CURRENT); 4103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 4203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes for (int i = 1; i < argc; i++) 4303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 4403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes const char *file = argv[i]; 4503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes int fd = open (file, O_RDONLY); 4603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (fd < 0) 4703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes error (EXIT_FAILURE, errno, "couldn't open file '%s'", file); 4803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 4903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Elf *elf = elf_begin (fd, ELF_C_READ, NULL); 5003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (elf == NULL) 5103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 5203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf("%s: elf_begin failed: %s\n", file, elf_errmsg (-1)); 5303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes close (fd); 5403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes continue; 5503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 5603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 5703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes const void *build_id; 5803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes ssize_t len = dwelf_elf_gnu_build_id (elf, &build_id); 5903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes switch (len) 6003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 6103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes case 0: 6203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("%s: <no NT_GNU_BUILD_ID note>\n", file); 6303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes break; 6403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes case -1: 6503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes errx (1, "dwelf_elf_gnu_build_id (%s): %s", 6603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes file, elf_errmsg (-1)); 6703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes default: 6803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("%s: build ID: ", file); 6903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes const unsigned char *p = build_id; 7003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes const unsigned char *end = p + len; 7103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes while (p < end) 7203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf("%02x", (unsigned)*p++); 7303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes putchar('\n'); 7403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 7503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 7603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elf_end (elf); 7703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes close (fd); 7803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 7903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 8003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes return 0; 8103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes} 82