37 lines · cpp
1//===-- Implementation of fcntl -------------------------------------------===//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/fcntl/fcntl.h"10 11#include "src/__support/OSUtil/fcntl.h"12#include "src/__support/common.h"13#include "src/__support/libc_errno.h"14#include "src/__support/macros/config.h"15 16#include <stdarg.h>17 18namespace LIBC_NAMESPACE_DECL {19 20LLVM_LIBC_FUNCTION(int, fcntl, (int fd, int cmd, ...)) {21 void *arg;22 va_list varargs;23 va_start(varargs, cmd);24 arg = va_arg(varargs, void *);25 va_end(varargs);26 27 auto result = LIBC_NAMESPACE::internal::fcntl(fd, cmd, arg);28 29 if (!result.has_value()) {30 libc_errno = result.error();31 return -1;32 }33 return result.value();34}35 36} // namespace LIBC_NAMESPACE_DECL37