| /* Retrieve file identification data. |
| Copyright (C) 1998, 1999, 2000, 2002, 2004 Red Hat, Inc. |
| This file is part of elfutils. |
| Written by Ulrich Drepper <drepper@redhat.com>, 1998. |
| |
| 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 <stddef.h> |
| |
| #include "libelfP.h" |
| |
| |
| char * |
| elf_getident (elf, ptr) |
| Elf *elf; |
| size_t *ptr; |
| { |
| /* In case this is no ELF file, the handle is invalid and we return |
| NULL. */ |
| if (elf == NULL || elf->kind != ELF_K_ELF) |
| { |
| if (ptr != NULL) |
| *ptr = 0; |
| return NULL; |
| } |
| |
| /* We already read the ELF header. Return a pointer to it and store |
| the length in *PTR. */ |
| if (ptr != NULL) |
| *ptr = EI_NIDENT; |
| |
| return (char *) (elf->class == ELFCLASS32 |
| || (offsetof (struct Elf, state.elf32.ehdr) |
| == offsetof (struct Elf, state.elf64.ehdr)) |
| ? elf->state.elf32.ehdr->e_ident |
| : elf->state.elf64.ehdr->e_ident); |
| } |