29 lines · cpp
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-exception6//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 15namespace LIBC_NAMESPACE_DECL {16 17LLVM_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_DECL29