| //===-- Including fcntl.h in overlay mode ---------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIBC_HDR_FCNTL_OVERLAY_H |
| #define LLVM_LIBC_HDR_FCNTL_OVERLAY_H |
| |
| #ifdef LIBC_FULL_BUILD |
| #error "This header should only be included in overlay mode" |
| #endif |
| |
| // Overlay mode |
| |
| // glibc <fcntl.h> header might provide extern inline definitions for few |
| // functions, causing external alias errors. They are guarded by |
| // `__USE_FORTIFY_LEVEL`, which will be temporarily disabled |
| // with `_FORTIFY_SOURCE`. |
| |
| #ifdef __USE_FORTIFY_LEVEL |
| #define LIBC_OLD_USE_FORTIFY_LEVEL __USE_FORTIFY_LEVEL |
| #undef __USE_FORTIFY_LEVEL |
| #define __USE_FORTIFY_LEVEL 0 |
| #endif |
| |
| #include <fcntl.h> |
| |
| #ifdef LIBC_OLD_USE_FORTIFY_LEVEL |
| #undef __USE_FORTIFY_LEVEL |
| #define __USE_FORTIFY_LEVEL LIBC_OLD_USE_FORTIFY_LEVEL |
| #undef LIBC_OLD_USE_FORTIFY_LEVEL |
| #endif |
| |
| #endif // LLVM_LIBC_HDR_FCNTL_OVERLAY_H |
