31 lines · cpp
1//===-- Linux implementation of pipe --------------------------------------===//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/unistd/pipe2.h"10 11#include "src/__support/OSUtil/syscall.h" // For internal syscall function.12#include "src/__support/common.h"13#include "src/__support/libc_errno.h"14#include "src/__support/macros/config.h"15#include <sys/syscall.h> // For syscall numbers.16 17namespace LIBC_NAMESPACE_DECL {18 19LLVM_LIBC_FUNCTION(int, pipe2, (int pipefd[2], int flags)) {20 int ret = LIBC_NAMESPACE::syscall_impl<int>(21 SYS_pipe2, reinterpret_cast<long>(pipefd), flags);22 if (ret < 0) {23 libc_errno = -ret;24 return -1;25 }26 MSAN_UNPOISON(pipefd, sizeof(int) * 2);27 return ret;28}29 30} // namespace LIBC_NAMESPACE_DECL31