1441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Copyright (C) 1999, 2000, 2002 Red Hat, Inc. 2cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng This file is part of Red Hat elfutils. 3441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Written by Ulrich Drepper <drepper@redhat.com>, 1999. 4441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 5cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Red Hat elfutils is free software; you can redistribute it and/or modify 6cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng it under the terms of the GNU General Public License as published by the 7cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Free Software Foundation; version 2 of the License. 8441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 9cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Red Hat elfutils is distributed in the hope that it will be useful, but 10cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng WITHOUT ANY WARRANTY; without even the implied warranty of 11cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng General Public License for more details. 13cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 14cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng You should have received a copy of the GNU General Public License along 15cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng with Red Hat elfutils; if not, write to the Free Software Foundation, 16cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 17cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 18cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Red Hat elfutils is an included package of the Open Invention Network. 19cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng An included package of the Open Invention Network is a package for which 20cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Open Invention Network licensees cross-license their patents. No patent 21cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng license is granted, either expressly or impliedly, by designation as an 22cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng included package. Should you wish to participate in the Open Invention 23cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng Network licensing program, please visit www.openinventionnetwork.com 24cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng <http://www.openinventionnetwork.com>. */ 25441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 26441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#ifdef HAVE_CONFIG_H 27441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project# include <config.h> 28441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#endif 29441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 30441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <fcntl.h> 31441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <gelf.h> 32441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdio.h> 33441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <stdlib.h> 34441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <string.h> 35441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <unistd.h> 36441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <sys/param.h> 37441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 38441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 39441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectint 40441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectmain (int argc, char *argv[]) 41441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 42441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int fd; 43441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *elf; 44441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *subelf; 45441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Cmd cmd; 46441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project off_t offset; 47441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project size_t todo; 48441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 49441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (argc < 4) 50441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 51441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 52441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Open the archive. */ 53441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project fd = open (argv[1], O_RDONLY); 54441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (fd == -1) 55441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 56441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("Cannot open input file: %m"); 57441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 58441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 59441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 60441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Set the ELF version. */ 61441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_version (EV_CURRENT); 62441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 63441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Create an ELF descriptor. */ 64441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project cmd = ELF_C_READ; 65441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf = elf_begin (fd, cmd, NULL); 66441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf == NULL) 67441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 68441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("Cannot create ELF descriptor: %s\n", elf_errmsg (-1)); 69441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 70441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 71441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 72441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* If it is no archive punt. */ 73441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_kind (elf) != ELF_K_AR) 74441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 75441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("`%s' is no archive\n", argv[1]); 76441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 77441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 78441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 79441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the elements of the archive one after the other. */ 80441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while ((subelf = elf_begin (fd, cmd, elf)) != NULL) 81441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 82441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* The the header for this element. */ 83441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf_Arhdr *arhdr = elf_getarhdr (subelf); 84441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 85441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (arhdr == NULL) 86441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 87441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("cannot get arhdr: %s\n", elf_errmsg (-1)); 88441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 89441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 90441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 91441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (strcmp (arhdr->ar_name, argv[2]) == 0) 92441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 93441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int outfd; 94441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 95441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get the offset of the file in the archive. */ 96441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project offset = elf_getbase (subelf); 97441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (offset == -1) 98441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 99441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("\ 100441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source ProjectFailed to get base address for the archive element: %s\n", 101441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 102441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 103441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 104441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 105441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Open the output file. */ 106441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project outfd = open (argv[3], O_CREAT | O_TRUNC | O_RDWR, 0666); 107441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (outfd == -1) 108441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 109441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("cannot open output file: %m"); 110441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 111441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 112441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 113441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Now write out the data. */ 114441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project todo = arhdr->ar_size; 115441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project while (todo > 0) 116441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 117441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project char buf[1024]; 118441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project ssize_t n = pread (fd, buf, MIN (sizeof buf, todo), offset); 119441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (n == 0) 120441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project break; 121441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 122441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (write (outfd, buf, n) != n) 123441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 124441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project puts ("Writing output failed"); 125441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 126441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 127441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 128441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project offset += n; 129441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project todo -= n; 130441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 131441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 132441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Check whether all the date was read and written out. */ 133441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (todo != 0) 134441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 135441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project puts ("Reading archive member failed."); 136441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 137441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 138441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 139441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Close the descriptors. */ 140441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_end (subelf) != 0 || elf_end (elf) != 0) 141441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 142441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("Freeing ELF descriptors failed: %s", elf_errmsg (-1)); 143441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 144441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 145441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 146441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project close (outfd); 147441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project close (fd); 148441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 149441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* All went well. */ 150441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (0); 151441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 152441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 153441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* Get next archive element. */ 154441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project cmd = elf_next (subelf); 155441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf_end (subelf) != 0) 156441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 157441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("error while freeing sub-ELF descriptor: %s\n", 158441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf_errmsg (-1)); 159441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 160441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 161441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 162441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 163441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* When we reach this point we haven't found the given file in the 164441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project archive. */ 165441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project printf ("File `%s' not found in archive\n", argv[2]); 166441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project exit (1); 167441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 168