36 lines · cpp
1//===-- Linux implementation of unlinkat ----------------------------------===//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/unlinkat.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 16#include "hdr/fcntl_macros.h"17#include <sys/syscall.h> // For syscall numbers.18 19namespace LIBC_NAMESPACE_DECL {20 21LLVM_LIBC_FUNCTION(int, unlinkat, (int dfd, const char *path, int flags)) {22#ifdef SYS_unlinkat23 int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_unlinkat, dfd, path, flags);24#else25#error "unlinkat syscalls not available."26#endif27 28 if (ret < 0) {29 libc_errno = -ret;30 return -1;31 }32 return 0;33}34 35} // namespace LIBC_NAMESPACE_DECL36