34 lines · cpp
1//===-- Linux implementation of linkat ------------------------------------===//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/linkat.h"10 11#include "src/__support/OSUtil/syscall.h" // For internal syscall function.12#include "src/__support/common.h"13 14#include "hdr/fcntl_macros.h"15#include "src/__support/libc_errno.h"16#include "src/__support/macros/config.h"17#include <sys/syscall.h> // For syscall numbers.18 19namespace LIBC_NAMESPACE_DECL {20 21LLVM_LIBC_FUNCTION(int, linkat,22 (int fd1, const char *path1, int fd2, const char *path2,23 int flags)) {24 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_linkat, fd1, path1, fd2,25 path2, flags);26 if (ret < 0) {27 libc_errno = -ret;28 return -1;29 }30 return ret;31}32 33} // namespace LIBC_NAMESPACE_DECL34