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/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 1998.
This program is Open Source software; you can redistribute it and/or
modify it under the terms of the Open Software License version 1.0 as
published by the Open Source Initiative.
You should have received a copy of the Open Software License along
with this program; if not, you may obtain a copy of the Open Software
License version 1.0 from http://www.opensource.org/licenses/osl.php or
by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
3001 King Ranch Road, Ukiah, CA 95482. */
#include <config.h>
#include <errno.h>
#include <fcntl.h>
#include <gelf.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main (int argc, char *argv[])
{
Elf *elf;
int fd;
GElf_Ehdr ehdr;
int cnt;
if (argc < 2)
{
puts ("missing parameter");
exit (1);
}
fd = open (argv[1], O_RDONLY);
if (fd == -1)
{
printf ("cannot open \"%s\": %s\n", argv[1], strerror (errno));
exit (1);
}
elf_version (EV_CURRENT);
elf = elf_begin (fd, ELF_C_READ, NULL);
if (elf == NULL)
{
printf ("cannot open ELF file: %s\n", elf_errmsg (-1));
exit (1);
}
if (elf_kind (elf) != ELF_K_ELF)
{
printf ("\"%s\" is not an ELF file\n", argv[1]);
exit (1);
}
if (gelf_getehdr (elf, &ehdr) == NULL)
{
printf ("cannot get the ELF header: %s\n", elf_errmsg (-1));
exit (1);
}
printf ("idx type %*s %*s %*s %*s %*s align flags\n",
gelf_getclass (elf) == ELFCLASS32 ? 9 : 17, "offset",
gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "vaddr",
gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "paddr",
gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "filesz",
gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "memsz");
for (cnt = 0; cnt < ehdr.e_phnum; ++cnt)
{
static const char *typenames[] =
{
[PT_NULL] = "NULL",
[PT_LOAD] = "LOAD",
[PT_DYNAMIC] = "DYNAMIC",
[PT_INTERP] = "INTERP",
[PT_NOTE] = "NOTE",
[PT_SHLIB] = "SHLIB",
[PT_PHDR] = "PHDR"
};
GElf_Phdr mem;
GElf_Phdr *phdr = gelf_getphdr (elf, cnt, &mem);
char buf[19];
const char *p_type = typenames[phdr->p_type];
/* If we don't know the name of the type we use the number value. */
if (phdr->p_type >= PT_NUM)
{
snprintf (buf, sizeof (buf), "%x", phdr->p_type);
p_type = buf;
}
printf ("%3d %-7s %#0*llx %#0*llx %#0*llx %#0*llx %#0*llx %#6llx ",
cnt, p_type,
gelf_getclass (elf) == ELFCLASS32 ? 9 : 17,
(unsigned long long int) phdr->p_offset,
gelf_getclass (elf) == ELFCLASS32 ? 10 : 18,
(unsigned long long int) phdr->p_vaddr,
gelf_getclass (elf) == ELFCLASS32 ? 10 : 18,
(unsigned long long int) phdr->p_paddr,
gelf_getclass (elf) == ELFCLASS32 ? 9 : 12,
(unsigned long long int) phdr->p_filesz,
gelf_getclass (elf) == ELFCLASS32 ? 9 : 12,
(unsigned long long int) phdr->p_memsz,
(unsigned long long int) phdr->p_align);
putc_unlocked ((phdr->p_flags & PF_X) ? 'X' : ' ', stdout);
putc_unlocked ((phdr->p_flags & PF_W) ? 'W' : ' ', stdout);
putc_unlocked ((phdr->p_flags & PF_R) ? 'R' : ' ', stdout);
putc_unlocked ('\n', stdout);
if (phdr->p_type == PT_INTERP)
{
/* We can show the user the name of the interpreter. */
size_t maxsize;
char *filedata = elf_rawfile (elf, &maxsize);
if (filedata != NULL && phdr->p_offset < maxsize)
printf ("\t[Requesting program interpreter: %s]\n",
filedata + phdr->p_offset);
}
}
if (elf_end (elf) != 0)
{
printf ("error while freeing ELF descriptor: %s\n", elf_errmsg (-1));
exit (1);
}
return 0;
}
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