The Android Open Source Project | 441f72d | 2009-03-03 19:29:28 -0800 | [diff] [blame^] | 1 | /* Get ELF header. |
| 2 | Copyright (C) 1998, 1999, 2000, 2002 Red Hat, Inc. |
| 3 | Written by Ulrich Drepper <drepper@redhat.com>, 1998. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation, version 2. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software Foundation, |
| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 17 | |
| 18 | #ifdef HAVE_CONFIG_H |
| 19 | # include <config.h> |
| 20 | #endif |
| 21 | |
| 22 | #include <libelf.h> |
| 23 | #include <stddef.h> |
| 24 | |
| 25 | #include "libelfP.h" |
| 26 | |
| 27 | #ifndef LIBELFBITS |
| 28 | # define LIBELFBITS 32 |
| 29 | #endif |
| 30 | |
| 31 | |
| 32 | ElfW2(LIBELFBITS,Ehdr) * |
| 33 | elfw2(LIBELFBITS,getehdr) (elf) |
| 34 | Elf *elf; |
| 35 | { |
| 36 | ElfW2(LIBELFBITS,Ehdr) *result; |
| 37 | |
| 38 | if (elf == NULL) |
| 39 | return NULL; |
| 40 | |
| 41 | if (unlikely (elf->kind != ELF_K_ELF)) |
| 42 | { |
| 43 | __libelf_seterrno (ELF_E_INVALID_HANDLE); |
| 44 | return NULL; |
| 45 | } |
| 46 | |
| 47 | rwlock_rdlock (elf->lock); |
| 48 | |
| 49 | if (elf->class == 0) |
| 50 | elf->class = ELFW(ELFCLASS,LIBELFBITS); |
| 51 | else if (unlikely (elf->class != ELFW(ELFCLASS,LIBELFBITS))) |
| 52 | { |
| 53 | __libelf_seterrno (ELF_E_INVALID_CLASS); |
| 54 | result = NULL; |
| 55 | goto out; |
| 56 | } |
| 57 | |
| 58 | result = elf->state.ELFW(elf,LIBELFBITS).ehdr; |
| 59 | |
| 60 | out: |
| 61 | rwlock_unlock (elf->lock); |
| 62 | |
| 63 | return result; |
| 64 | } |
| 65 | INTDEF(elfw2(LIBELFBITS,getehdr)) |