| 1 | //===-- Implementation of setbuf ------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/stdio/setbuf.h" |
| 10 | #include "hdr/stdio_macros.h" |
| 11 | #include "src/__support/File/file.h" |
| 12 | #include "src/__support/libc_errno.h" |
| 13 | #include "src/__support/macros/config.h" |
| 14 | |
| 15 | namespace LIBC_NAMESPACE_DECL { |
| 16 | |
| 17 | LLVM_LIBC_FUNCTION(void, setbuf, |
| 18 | (::FILE *__restrict stream, char *__restrict buf)) { |
| 19 | int mode = _IOFBF; |
| 20 | if (buf == nullptr) |
| 21 | mode = _IONBF; |
| 22 | int err = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->set_buffer( |
| 23 | buf, BUFSIZ, mode); |
| 24 | if (err != 0) |
| 25 | libc_errno = err; |
| 26 | } |
| 27 | |
| 28 | } // namespace LIBC_NAMESPACE_DECL |
| 29 |