103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005 Red Hat, Inc. 203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is part of elfutils. 303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Written by Ulrich Drepper <drepper@redhat.com>, 1998. 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 2003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <errno.h> 2103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <fcntl.h> 2203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <gelf.h> 2303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <stdio.h> 2403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <stdlib.h> 2503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <string.h> 2603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 2703333823c75a1c1887e923828113a1b0fd12020cElliott Hughesint 2803333823c75a1c1887e923828113a1b0fd12020cElliott Hughesmain (int argc, char *argv[]) 2903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes{ 3003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Elf *elf; 3103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes int fd; 3203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes GElf_Ehdr ehdr; 3303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes int cnt; 3403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 3503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (argc < 2) 3603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 3703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes puts ("missing parameter"); 3803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes exit (1); 3903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 4003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 4103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes fd = open (argv[1], O_RDONLY); 4203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (fd == -1) 4303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 4403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("cannot open \"%s\": %s\n", argv[1], strerror (errno)); 4503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes exit (1); 4603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 4703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 4803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elf_version (EV_CURRENT); 4903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 5003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elf = elf_begin (fd, ELF_C_READ, NULL); 5103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (elf == NULL) 5203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 5303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("cannot open ELF file: %s\n", elf_errmsg (-1)); 5403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes exit (1); 5503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 5603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 5703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (elf_kind (elf) != ELF_K_ELF) 5803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 5903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("\"%s\" is not an ELF file\n", argv[1]); 6003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes exit (1); 6103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 6203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 6303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (gelf_getehdr (elf, &ehdr) == NULL) 6403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 6503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("cannot get the ELF header: %s\n", elf_errmsg (-1)); 6603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes exit (1); 6703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 6803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 6903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("idx type %*s %*s %*s %*s %*s align flags\n", 7003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 9 : 17, "offset", 7103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "vaddr", 7203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "paddr", 7303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "filesz", 7403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "memsz"); 7503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 7603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes for (cnt = 0; cnt < ehdr.e_phnum; ++cnt) 7703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 7803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes static const char *typenames[] = 7903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 8003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_NULL] = "NULL", 8103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_LOAD] = "LOAD", 8203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_DYNAMIC] = "DYNAMIC", 8303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_INTERP] = "INTERP", 8403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_NOTE] = "NOTE", 8503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_SHLIB] = "SHLIB", 8603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes [PT_PHDR] = "PHDR" 8703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes }; 8803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes GElf_Phdr mem; 8903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes GElf_Phdr *phdr = gelf_getphdr (elf, cnt, &mem); 9003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes char buf[19]; 9103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes const char *p_type = typenames[phdr->p_type]; 9203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 9303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes /* If we don't know the name of the type we use the number value. */ 9403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (phdr->p_type >= PT_NUM) 9503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 9603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes snprintf (buf, sizeof (buf), "%x", phdr->p_type); 9703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes p_type = buf; 9803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 9903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 10003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("%3d %-7s %#0*llx %#0*llx %#0*llx %#0*llx %#0*llx %#6llx ", 10103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes cnt, p_type, 10203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 9 : 17, 10303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (unsigned long long int) phdr->p_offset, 10403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, 10503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (unsigned long long int) phdr->p_vaddr, 10603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, 10703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (unsigned long long int) phdr->p_paddr, 10803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, 10903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (unsigned long long int) phdr->p_filesz, 11003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, 11103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (unsigned long long int) phdr->p_memsz, 11203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes (unsigned long long int) phdr->p_align); 11303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 11403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes putc_unlocked ((phdr->p_flags & PF_X) ? 'X' : ' ', stdout); 11503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes putc_unlocked ((phdr->p_flags & PF_W) ? 'W' : ' ', stdout); 11603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes putc_unlocked ((phdr->p_flags & PF_R) ? 'R' : ' ', stdout); 11703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 11803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes putc_unlocked ('\n', stdout); 11903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 12003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (phdr->p_type == PT_INTERP) 12103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 12203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes /* We can show the user the name of the interpreter. */ 12303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes size_t maxsize; 12403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes char *filedata = elf_rawfile (elf, &maxsize); 12503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 12603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (filedata != NULL && phdr->p_offset < maxsize) 12703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("\t[Requesting program interpreter: %s]\n", 12803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes filedata + phdr->p_offset); 12903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 13003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 13103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 13203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (elf_end (elf) != 0) 13303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 13403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes printf ("error while freeing ELF descriptor: %s\n", elf_errmsg (-1)); 13503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes exit (1); 13603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 13703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 13803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes return 0; 13903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes} 140