f6c0f35e07
members of the ELF Executable Header inside the library-private
`struct _Elf' descriptor and only update the underlying Elf{32,64}_Ehdr
structure on an elf_update(3) call. These fields of the Ehdr
structure are technically `out of bounds' for an application program
per the ELF(3) API, but we've seen applications that initialize
a new Ehdr structure using memcpy(), messing up the library's
invariants. [1]
Implement elf_getphnum() and handle ELF objects with more than
64K program header table entries.
Reported by: jb [1]
70 lines
2.1 KiB
C
70 lines
2.1 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <ar.h>
|
|
#include <libelf.h>
|
|
|
|
#include "_libelf.h"
|
|
|
|
int
|
|
elf_getshstrndx(Elf *e, size_t *strndx)
|
|
{
|
|
void *eh;
|
|
int ec;
|
|
|
|
if (e == NULL || e->e_kind != ELF_K_ELF ||
|
|
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
|
|
LIBELF_SET_ERROR(ARGUMENT, 0);
|
|
return (0);
|
|
}
|
|
|
|
if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
|
|
return (0);
|
|
|
|
*strndx = e->e_u.e_elf.e_strndx;
|
|
|
|
return (1);
|
|
}
|
|
|
|
int
|
|
elf_setshstrndx(Elf *e, size_t strndx)
|
|
{
|
|
void *eh;
|
|
int ec;
|
|
|
|
if (e == NULL || e->e_kind != ELF_K_ELF ||
|
|
((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
|
|
((eh = _libelf_ehdr(e, ec, 0)) == NULL)) {
|
|
LIBELF_SET_ERROR(ARGUMENT, 0);
|
|
return (0);
|
|
}
|
|
|
|
return (_libelf_setshstrndx(e, eh, ec, strndx));
|
|
}
|