| /* | |
| * Copyright (C) 2017 The Android Open Source Project | |
| * All rights reserved. | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions | |
| * are met: | |
| * * Redistributions of source code must retain the above copyright | |
| * notice, this list of conditions and the following disclaimer. | |
| * * Redistributions in binary form must reproduce the above copyright | |
| * notice, this list of conditions and the following disclaimer in | |
| * the documentation and/or other materials provided with the | |
| * distribution. | |
| * | |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS | |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| * SUCH DAMAGE. | |
| */ | |
| #ifndef _STDLIB_H | |
| #error "Never include this file directly; instead, include <stdlib.h>" | |
| #endif | |
| #if defined(__BIONIC_FORTIFY) | |
| /* PATH_MAX is unavailable without polluting the namespace, but it's always 4096 on Linux */ | |
| #define __PATH_MAX 4096 | |
| char* _Nullable realpath(const char* _Nonnull path, char* _Nullable resolved) | |
| __clang_error_if(!path, "'realpath': NULL path is never correct; flipped arguments?") | |
| __clang_error_if(__bos_unevaluated_lt(__bos(resolved), __PATH_MAX), | |
| "'realpath' output parameter must be NULL or a pointer to a buffer " | |
| "with >= PATH_MAX bytes"); | |
| /* No need for a definition; the only issues we can catch are at compile-time. */ | |
| #undef __PATH_MAX | |
| #endif /* defined(__BIONIC_FORTIFY) */ |