| /* Returns the file name and build ID stored in the .gnu_altdebuglink if found. |
| Copyright (C) 2014 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" |
| |
| ssize_t |
| dwelf_dwarf_gnu_debugaltlink (Dwarf *dwarf, |
| const char **name_p, |
| const void **build_idp) |
| { |
| Elf_Data *data = dwarf->sectiondata[IDX_gnu_debugaltlink]; |
| if (data == NULL) |
| { |
| return 0; |
| } |
| |
| const void *ptr = memchr (data->d_buf, '\0', data->d_size); |
| if (ptr == NULL) |
| { |
| __libdw_seterrno (DWARF_E_INVALID_ELF); |
| return -1; |
| } |
| size_t build_id_len = data->d_size - (ptr - data->d_buf + 1); |
| if (build_id_len == 0 || (size_t) (ssize_t) build_id_len != build_id_len) |
| { |
| __libdw_seterrno (DWARF_E_INVALID_ELF); |
| return -1; |
| } |
| *name_p = data->d_buf; |
| *build_idp = ptr + 1; |
| return build_id_len; |
| } |
| INTDEF(dwelf_dwarf_gnu_debugaltlink) |