libc/src/stdio/setvbuf.cpp

//===-- Implementation of setvbuf -----------------------------------------===//
//
// 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/setvbuf.h"
#include "src/__support/File/file.h"

#include "hdr/types/FILE.h"
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include <stddef.h>

namespace LIBC_NAMESPACE_DECL {

LLVM_LIBC_FUNCTION(int, setvbuf,
                   (::FILE *__restrict stream, char *__restrict buf, int type,
                    size_t size)) {
  int err = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->set_buffer(
      buf, size, type);
  if (err != 0)
    libc_errno = err;
  return err;
}

} // namespace LIBC_NAMESPACE_DECL