it with FreeBSD's implementation --HG-- extra : convert_revision : ef9c4551b9a6b54b76a89f286ff9804c55790621
164 lines
4.7 KiB
C
164 lines
4.7 KiB
C
/*-
|
|
* Copyright (c) 2006 Joseph Koshy
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <limits.h>
|
|
|
|
#include <assert.h>
|
|
#include "gelf.h"
|
|
#include "libelf.h"
|
|
#include <string.h>
|
|
|
|
#include "_libelf.h"
|
|
|
|
Elf32_Ehdr *
|
|
elf32_getehdr(Elf *e)
|
|
{
|
|
return (_libelf_ehdr(e, ELFCLASS32, 0));
|
|
}
|
|
|
|
Elf64_Ehdr *
|
|
elf64_getehdr(Elf *e)
|
|
{
|
|
return (_libelf_ehdr(e, ELFCLASS64, 0));
|
|
}
|
|
|
|
GElf_Ehdr *
|
|
gelf_getehdr(Elf *e, GElf_Ehdr *d)
|
|
{
|
|
int ec;
|
|
Elf32_Ehdr *eh32;
|
|
Elf64_Ehdr *eh64;
|
|
|
|
if (d == NULL || e == NULL ||
|
|
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
|
|
LIBELF_SET_ERROR(ARGUMENT, 0);
|
|
return (NULL);
|
|
}
|
|
|
|
if (ec == ELFCLASS32) {
|
|
if ((eh32 = _libelf_ehdr(e, ELFCLASS32, 0)) == NULL)
|
|
return (NULL);
|
|
|
|
(void) memcpy(d->e_ident, eh32->e_ident, sizeof(eh32->e_ident));
|
|
d->e_type = eh32->e_type;
|
|
d->e_machine = eh32->e_machine;
|
|
d->e_version = eh32->e_version;
|
|
d->e_entry = eh32->e_entry;
|
|
d->e_phoff = eh32->e_phoff;
|
|
d->e_shoff = eh32->e_shoff;
|
|
d->e_flags = eh32->e_flags;
|
|
d->e_ehsize = eh32->e_ehsize;
|
|
d->e_phentsize = eh32->e_phentsize;
|
|
d->e_phnum = eh32->e_phnum;
|
|
d->e_shentsize = eh32->e_shentsize;
|
|
d->e_shnum = eh32->e_shnum;
|
|
d->e_shstrndx = eh32->e_shstrndx;
|
|
|
|
return (d);
|
|
}
|
|
|
|
assert(ec == ELFCLASS64);
|
|
|
|
if ((eh64 = _libelf_ehdr(e, ELFCLASS64, 0)) == NULL)
|
|
return (NULL);
|
|
*d = *eh64;
|
|
|
|
return (d);
|
|
}
|
|
|
|
Elf32_Ehdr *
|
|
elf32_newehdr(Elf *e)
|
|
{
|
|
return (_libelf_ehdr(e, ELFCLASS32, 1));
|
|
}
|
|
|
|
Elf64_Ehdr *
|
|
elf64_newehdr(Elf *e)
|
|
{
|
|
return (_libelf_ehdr(e, ELFCLASS64, 1));
|
|
}
|
|
|
|
void *
|
|
gelf_newehdr(Elf *e, int ec)
|
|
{
|
|
if (e != NULL &&
|
|
(ec == ELFCLASS32 || ec == ELFCLASS64))
|
|
return (_libelf_ehdr(e, ec, 1));
|
|
|
|
LIBELF_SET_ERROR(ARGUMENT, 0);
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
gelf_update_ehdr(Elf *e, GElf_Ehdr *s)
|
|
{
|
|
int ec;
|
|
void *ehdr;
|
|
Elf32_Ehdr *eh32;
|
|
Elf64_Ehdr *eh64;
|
|
|
|
if (s== NULL || e == NULL || e->e_kind != ELF_K_ELF ||
|
|
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
|
|
LIBELF_SET_ERROR(ARGUMENT, 0);
|
|
return (0);
|
|
}
|
|
|
|
if (e->e_cmd == ELF_C_READ) {
|
|
LIBELF_SET_ERROR(MODE, 0);
|
|
return (0);
|
|
}
|
|
|
|
if ((ehdr = _libelf_ehdr(e, ec, 0)) == NULL)
|
|
return (0);
|
|
|
|
if (ec == ELFCLASS64) {
|
|
eh64 = (Elf64_Ehdr *) ehdr;
|
|
*eh64 = *s;
|
|
return (1);
|
|
}
|
|
|
|
eh32 = (Elf32_Ehdr *) ehdr;
|
|
|
|
(void) memcpy(eh32->e_ident, s->e_ident, sizeof(eh32->e_ident));
|
|
|
|
eh32->e_type = s->e_type;
|
|
eh32->e_machine = s->e_machine;
|
|
eh32->e_version = s->e_version;
|
|
LIBELF_COPY_U32(eh32, s, e_entry);
|
|
LIBELF_COPY_U32(eh32, s, e_phoff);
|
|
LIBELF_COPY_U32(eh32, s, e_shoff);
|
|
eh32->e_flags = s->e_flags;
|
|
eh32->e_ehsize = s->e_ehsize;
|
|
eh32->e_phentsize = s->e_phentsize;
|
|
eh32->e_phnum = s->e_phnum;
|
|
eh32->e_shentsize = s->e_shentsize;
|
|
eh32->e_shnum = s->e_shnum;
|
|
eh32->e_shstrndx = s->e_shstrndx;
|
|
|
|
(void) elf_flagehdr(e, ELF_C_SET, ELF_F_DIRTY);
|
|
|
|
return (1);
|
|
}
|