140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 1998.
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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 <errno.h>
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#include <fcntl.h>
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#include <gelf.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int
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main (int argc, char *argv[])
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{
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Elf *elf;
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int fd;
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GElf_Ehdr ehdr;
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int cnt;
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if (argc < 2)
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{
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puts ("missing parameter");
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exit (1);
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}
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fd = open (argv[1], O_RDONLY);
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if (fd == -1)
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{
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printf ("cannot open \"%s\": %s\n", argv[1], strerror (errno));
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exit (1);
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}
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elf_version (EV_CURRENT);
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elf = elf_begin (fd, ELF_C_READ, NULL);
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if (elf == NULL)
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{
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printf ("cannot open ELF file: %s\n", elf_errmsg (-1));
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exit (1);
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}
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if (elf_kind (elf) != ELF_K_ELF)
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{
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printf ("\"%s\" is not an ELF file\n", argv[1]);
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exit (1);
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}
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if (gelf_getehdr (elf, &ehdr) == NULL)
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{
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printf ("cannot get the ELF header: %s\n", elf_errmsg (-1));
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exit (1);
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}
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printf ("idx type %*s %*s %*s %*s %*s align flags\n",
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gelf_getclass (elf) == ELFCLASS32 ? 9 : 17, "offset",
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gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "vaddr",
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gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "paddr",
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gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "filesz",
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gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "memsz");
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for (cnt = 0; cnt < ehdr.e_phnum; ++cnt)
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{
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static const char *typenames[] =
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{
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[PT_NULL] = "NULL",
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[PT_LOAD] = "LOAD",
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[PT_DYNAMIC] = "DYNAMIC",
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[PT_INTERP] = "INTERP",
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[PT_NOTE] = "NOTE",
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[PT_SHLIB] = "SHLIB",
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[PT_PHDR] = "PHDR"
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};
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GElf_Phdr mem;
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GElf_Phdr *phdr = gelf_getphdr (elf, cnt, &mem);
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char buf[19];
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const char *p_type = typenames[phdr->p_type];
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/* If we don't know the name of the type we use the number value. */
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if (phdr->p_type >= PT_NUM)
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{
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snprintf (buf, sizeof (buf), "%x", phdr->p_type);
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p_type = buf;
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}
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printf ("%3d %-7s %#0*llx %#0*llx %#0*llx %#0*llx %#0*llx %#6llx ",
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cnt, p_type,
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gelf_getclass (elf) == ELFCLASS32 ? 9 : 17,
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(unsigned long long int) phdr->p_offset,
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gelf_getclass (elf) == ELFCLASS32 ? 10 : 18,
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(unsigned long long int) phdr->p_vaddr,
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gelf_getclass (elf) == ELFCLASS32 ? 10 : 18,
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(unsigned long long int) phdr->p_paddr,
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gelf_getclass (elf) == ELFCLASS32 ? 9 : 12,
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(unsigned long long int) phdr->p_filesz,
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gelf_getclass (elf) == ELFCLASS32 ? 9 : 12,
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(unsigned long long int) phdr->p_memsz,
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(unsigned long long int) phdr->p_align);
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putc_unlocked ((phdr->p_flags & PF_X) ? 'X' : ' ', stdout);
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putc_unlocked ((phdr->p_flags & PF_W) ? 'W' : ' ', stdout);
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putc_unlocked ((phdr->p_flags & PF_R) ? 'R' : ' ', stdout);
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putc_unlocked ('\n', stdout);
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if (phdr->p_type == PT_INTERP)
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{
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/* We can show the user the name of the interpreter. */
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size_t maxsize;
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char *filedata = elf_rawfile (elf, &maxsize);
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if (filedata != NULL && phdr->p_offset < maxsize)
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printf ("\t[Requesting program interpreter: %s]\n",
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filedata + phdr->p_offset);
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}
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}
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if (elf_end (elf) != 0)
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{
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printf ("error while freeing ELF descriptor: %s\n", elf_errmsg (-1));
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exit (1);
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}
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return 0;
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}
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