llvm-project/libc/src/stdio/setbuf.cpp
2023-03-03 11:15:36 -08:00

29 lines
849 B
C++

//===-- Implementation of setbuf ------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "src/stdio/setbuf.h"
#include "src/__support/File/file.h"
#include "src/errno/libc_errno.h"
#include <stdio.h>
namespace __llvm_libc {
LLVM_LIBC_FUNCTION(void, setbuf,
(::FILE *__restrict stream, char *__restrict buf)) {
int mode = _IOFBF;
if (buf == nullptr)
mode = _IONBF;
int err = reinterpret_cast<__llvm_libc::File *>(stream)->set_buffer(
buf, BUFSIZ, mode);
if (err != 0)
libc_errno = err;
}
} // namespace __llvm_libc