| /* Support for reading /etc/ld.so.cache files written by Linux ldconfig. |
| Copyright (C) 2003-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <ldconfig.h> |
| |
| /* For now we only support the natural XLEN ABI length on all targets, so the |
| only bits that need to go into ld.so.cache are the FLEG ABI length. */ |
| #if defined __riscv_float_abi_double |
| # define _DL_CACHE_DEFAULT_ID (FLAG_RISCV_FLOAT_ABI_DOUBLE | FLAG_ELF_LIBC6) |
| #else |
| # define _DL_CACHE_DEFAULT_ID (FLAG_RISCV_FLOAT_ABI_SOFT | FLAG_ELF_LIBC6) |
| #endif |
| |
| #define _dl_cache_check_flags(flags) \ |
| ((flags) == _DL_CACHE_DEFAULT_ID) |
| |
| /* If given a path to one of our library directories, adds every library |
| directory via add_dir (), otherwise just adds the giver directory. On |
| RISC-V, libraries can be found in paths ending in: |
| - /lib64/lp64d |
| - /lib64/lp64 |
| - /lib (only ld.so) |
| so this will add all of those paths. |
| |
| According to Joseph Myers: |
| My reasoning for that would be: generic autoconf-configured (etc.) |
| software may only know about using the lib directory, so you want the |
| lib directory to be searched regardless of the ABI - but it's also |
| useful to be able to e.g. list /usr/local/lib in /etc/ld.so.conf for all |
| architectures and have that automatically imply /usr/local/lib64/lp64d |
| etc. so that libraries can be found that come from software that does |
| use the ABI-specific directories. */ |
| #define add_system_dir(dir) \ |
| do \ |
| { \ |
| size_t len = strlen (dir); \ |
| char path[len + 9]; \ |
| memcpy (path, dir, len + 1); \ |
| if (len >= 12 && ! memcmp(path + len - 12, "/lib64/lp64d", 12)) \ |
| { \ |
| len -= 8; \ |
| path[len] = '\0'; \ |
| } \ |
| if (len >= 11 && ! memcmp(path + len - 11, "/lib64/lp64", 11)) \ |
| { \ |
| len -= 7; \ |
| path[len] = '\0'; \ |
| } \ |
| add_dir (path); \ |
| if (len >= 4 && ! memcmp(path + len - 4, "/lib", 4)) \ |
| { \ |
| memcpy (path + len, "64/lp64d", 9); \ |
| add_dir (path); \ |
| memcpy (path + len, "64/lp64", 8); \ |
| add_dir (path); \ |
| } \ |
| } while (0) |
| |
| |
| #include_next <dl-cache.h> |
