| /* Creates an ELF handle from a possibly compressed file descriptor. |
| Copyright (C) 2018 Red Hat, Inc. |
| This file is part of elfutils. |
| |
| 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 "libdwelfP.h" |
| #include "libdwflP.h" |
| #include "libelfP.h" |
| |
| #include <unistd.h> |
| |
| Elf * |
| dwelf_elf_begin (int fd) |
| { |
| Elf *elf = NULL; |
| Dwfl_Error e = __libdw_open_elf (fd, &elf); |
| if (elf != NULL && elf_kind (elf) != ELF_K_NONE) |
| return elf; |
| |
| /* Elf wasn't usable. Make sure there is a proper elf error message. */ |
| |
| if (elf != NULL) |
| elf_end (elf); |
| |
| if (e != DWFL_E_LIBELF) |
| { |
| /* Force a bad ELF error. */ |
| char badelf[EI_NIDENT] = { }; |
| Elf *belf = elf_memory (badelf, EI_NIDENT); |
| elf32_getehdr (belf); |
| elf_end (belf); |
| } |
| |
| return NULL; |
| } |