| /* Update section header. |
| Copyright (C) 2000, 2001, 2002, 2010 Red Hat, Inc. |
| This file is part of elfutils. |
| Written by Ulrich Drepper <drepper@redhat.com>, 2000. |
| |
| This file is free software; you can redistribute it and/or modify |
| it under the terms of either |
| |
| * the GNU Lesser General Public License as published by the Free |
| Software Foundation; either version 3 of the License, or (at |
| your option) any later version |
| |
| or |
| |
| * the GNU General Public License as published by the Free |
| Software Foundation; either version 2 of the License, or (at |
| your option) any later version |
| |
| or both in parallel, as here. |
| |
| elfutils is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received copies of the GNU General Public License and |
| the GNU Lesser General Public License along with this program. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif |
| |
| #include <gelf.h> |
| #include <string.h> |
| |
| #include "libelfP.h" |
| |
| |
| int |
| gelf_update_shdr (Elf_Scn *scn, GElf_Shdr *src) |
| { |
| int result = 0; |
| Elf *elf; |
| |
| if (scn == NULL || src == NULL) |
| return 0; |
| |
| elf = scn->elf; |
| rwlock_wrlock (elf->lock); |
| |
| if (elf->class == ELFCLASS32) |
| { |
| Elf32_Shdr *shdr |
| = scn->shdr.e32 ?: __elf32_getshdr_wrlock (scn); |
| |
| if (shdr == NULL) |
| { |
| __libelf_seterrno (ELF_E_INVALID_OPERAND); |
| goto out; |
| } |
| |
| if (unlikely (src->sh_flags > 0xffffffffull) |
| || unlikely (src->sh_addr > 0xffffffffull) |
| || unlikely (src->sh_offset > 0xffffffffull) |
| || unlikely (src->sh_size > 0xffffffffull) |
| || unlikely (src->sh_addralign > 0xffffffffull) |
| || unlikely (src->sh_entsize > 0xffffffffull)) |
| { |
| __libelf_seterrno (ELF_E_INVALID_DATA); |
| goto out; |
| } |
| |
| #define COPY(name) \ |
| shdr->name = src->name |
| COPY (sh_name); |
| COPY (sh_type); |
| COPY (sh_flags); |
| COPY (sh_addr); |
| COPY (sh_offset); |
| COPY (sh_size); |
| COPY (sh_link); |
| COPY (sh_info); |
| COPY (sh_addralign); |
| COPY (sh_entsize); |
| } |
| else |
| { |
| Elf64_Shdr *shdr |
| = scn->shdr.e64 ?: __elf64_getshdr_wrlock (scn); |
| |
| if (shdr == NULL) |
| { |
| __libelf_seterrno (ELF_E_INVALID_OPERAND); |
| goto out; |
| } |
| |
| /* We only have to copy the data. */ |
| (void) memcpy (shdr, src, sizeof (GElf_Shdr)); |
| } |
| |
| /* Mark the section header as modified. */ |
| scn->shdr_flags |= ELF_F_DIRTY; |
| |
| result = 1; |
| |
| out: |
| rwlock_unlock (elf->lock); |
| |
| return result; |
| } |