1 /* Copyright (C) 2002, 2005 Red Hat, Inc. 2 This file is part of Red Hat elfutils. 3 Written by Ulrich Drepper <drepper (at) redhat.com>, 2002. 4 5 Red Hat elfutils is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by the 7 Free Software Foundation; version 2 of the License. 8 9 Red Hat elfutils is distributed in the hope that it will be useful, but 10 WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 General Public License for more details. 13 14 You should have received a copy of the GNU General Public License along 15 with Red Hat elfutils; if not, write to the Free Software Foundation, 16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 17 18 Red Hat elfutils is an included package of the Open Invention Network. 19 An included package of the Open Invention Network is a package for which 20 Open Invention Network licensees cross-license their patents. No patent 21 license is granted, either expressly or impliedly, by designation as an 22 included package. Should you wish to participate in the Open Invention 23 Network licensing program, please visit www.openinventionnetwork.com 24 <http://www.openinventionnetwork.com>. */ 25 26 #include <errno.h> 27 #include <error.h> 28 #include <fcntl.h> 29 #include <gelf.h> 30 #include <stdlib.h> 31 #include <unistd.h> 32 33 int 34 main (int argc, char *argv[]) 35 { 36 if (argc < 3) 37 error (EXIT_FAILURE, 0, "usage: %s FROMNAME TONAME", argv[0]); 38 39 elf_version (EV_CURRENT); 40 41 int infd = open (argv[1], O_RDONLY); 42 if (infd == -1) 43 error (EXIT_FAILURE, errno, "cannot open input file '%s'", argv[1]); 44 45 Elf *inelf = elf_begin (infd, ELF_C_READ, NULL); 46 if (inelf == NULL) 47 error (EXIT_FAILURE, 0, "problems opening '%s' as ELF file: %s", 48 argv[1], elf_errmsg (-1)); 49 50 int outfd = creat (argv[2], 0666); 51 if (outfd == -1) 52 error (EXIT_FAILURE, errno, "cannot open output file '%s'", argv[2]); 53 54 Elf *outelf = elf_begin (outfd, ELF_C_WRITE, NULL); 55 if (outelf == NULL) 56 error (EXIT_FAILURE, 0, "problems opening '%s' as ELF file: %s", 57 argv[2], elf_errmsg (-1)); 58 59 gelf_newehdr (outelf, gelf_getclass (inelf)); 60 61 GElf_Ehdr ehdr_mem; 62 GElf_Ehdr *ehdr; 63 gelf_update_ehdr (outelf, (ehdr = gelf_getehdr (inelf, &ehdr_mem))); 64 65 if (ehdr->e_phnum > 0) 66 { 67 int cnt; 68 69 if (gelf_newphdr (outelf, ehdr->e_phnum) == 0) 70 error (EXIT_FAILURE, 0, "cannot create program header: %s", 71 elf_errmsg (-1)); 72 73 for (cnt = 0; cnt < ehdr->e_phnum; ++cnt) 74 { 75 GElf_Phdr phdr_mem; 76 77 gelf_update_phdr (outelf, cnt, gelf_getphdr (inelf, cnt, &phdr_mem)); 78 } 79 } 80 81 Elf_Scn *scn = NULL; 82 while ((scn = elf_nextscn (inelf, scn)) != NULL) 83 { 84 Elf_Scn *newscn = elf_newscn (outelf); 85 86 GElf_Shdr shdr_mem; 87 gelf_update_shdr (newscn, gelf_getshdr (scn, &shdr_mem)); 88 89 *elf_newdata (newscn) = *elf_getdata (scn, NULL); 90 } 91 92 elf_flagelf (outelf, ELF_C_SET, ELF_F_LAYOUT); 93 94 if (elf_update (outelf, ELF_C_WRITE) == -1) 95 error (EXIT_FAILURE, 0, "elf_update failed: %s", elf_errmsg (-1)); 96 97 elf_end (outelf); 98 close (outfd); 99 100 elf_end (inelf); 101 102 return 0; 103 } 104
