| //===-- Linux implementation of remove ------------------------------------===// |
| // |
| // 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/remove.h" |
| |
| #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
| #include "src/__support/common.h" |
| |
| #include <errno.h> |
| #include <fcntl.h> // For AT_* macros. |
| #include <sys/syscall.h> // For syscall numbers. |
| |
| namespace __llvm_libc { |
| |
| LLVM_LIBC_FUNCTION(int, remove, (const char *path)) { |
| // We first try unlinking it as a file. If it is ia file, it will succeed. If |
| // it fails with EISDIR, we will try unlinking it as a directory. |
| int ret = __llvm_libc::syscall_impl(SYS_unlinkat, AT_FDCWD, path, 0); |
| if (ret == -EISDIR) |
| ret = __llvm_libc::syscall_impl(SYS_unlinkat, AT_FDCWD, path, AT_REMOVEDIR); |
| if (ret >= 0) |
| return 0; |
| errno = -ret; |
| return -1; |
| } |
| |
| } // namespace __llvm_libc |