1441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project/* Update section header. 2441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Copyright (C) 2000, 2001, 2002 Red Hat, Inc. 3441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Written by Ulrich Drepper <drepper@redhat.com>, 2000. 4441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 5441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project This program is free software; you can redistribute it and/or modify 6441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project it under the terms of the GNU General Public License as published by 7441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project the Free Software Foundation, version 2. 8441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 9441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project This program is distributed in the hope that it will be useful, 10441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project but WITHOUT ANY WARRANTY; without even the implied warranty of 11441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project GNU General Public License for more details. 13441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 14441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project You should have received a copy of the GNU General Public License 15441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project along with this program; if not, write to the Free Software Foundation, 16441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 18441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#ifdef HAVE_CONFIG_H 19441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project# include <config.h> 20441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#endif 21441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 22441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <gelf.h> 23441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include <string.h> 24441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 25441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#include "libelfP.h" 26441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 27441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 28441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectint 29441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Projectgelf_update_shdr (Elf_Scn *scn, GElf_Shdr *src) 30441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project{ 31441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project int result = 0; 32441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf *elf; 33441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 34441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (scn == NULL || src == NULL) 35441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return 0; 36441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 37441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project elf = scn->elf; 38441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rwlock_wrlock (elf->lock); 39441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 40441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (elf->class == ELFCLASS32) 41441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 42441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf32_Shdr *shdr = scn->shdr.e32 ?: INTUSE(elf32_getshdr) (scn); 43441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 44441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr == NULL) 45441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 46441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __libelf_seterrno (ELF_E_INVALID_OPERAND); 47441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto out; 48441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 49441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 50441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (unlikely (src->sh_flags > 0xffffffffull) 51441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (src->sh_addr > 0xffffffffull) 52441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (src->sh_offset > 0xffffffffull) 53441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (src->sh_size > 0xffffffffull) 54441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (src->sh_addralign > 0xffffffffull) 55441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project || unlikely (src->sh_entsize > 0xffffffffull)) 56441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 57441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __libelf_seterrno (ELF_E_INVALID_DATA); 58441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto out; 59441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 60441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 61441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project#define COPY(name) \ 62441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project shdr->name = src->name 63441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_name); 64441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_type); 65441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_flags); 66441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_addr); 67441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_offset); 68441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_size); 69441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_link); 70441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_info); 71441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_addralign); 72441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project COPY (sh_entsize); 73441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 74441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project else 75441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 76441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project Elf64_Shdr *shdr = scn->shdr.e64 ?: INTUSE(elf64_getshdr) (scn); 77441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 78441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project if (shdr == NULL) 79441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project { 80441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project __libelf_seterrno (ELF_E_INVALID_OPERAND); 81441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project goto out; 82441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 83441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 84441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project /* We only have to copy the data. */ 85441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project (void) memcpy (shdr, src, sizeof (GElf_Shdr)); 86441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project } 87441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 88441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project result = 1; 89441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 90441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project out: 91441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project rwlock_unlock (elf->lock); 92441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project 93441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project return result; 94441f72d43a9b550baa779fc82f70816da5f74f0eThe Android Open Source Project} 95