| //===-- Linux implementation of unlink ------------------------------------===// |
| // |
| // 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/unistd/unlink.h" |
| |
| #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
| #include "src/__support/common.h" |
| |
| #include "src/errno/libc_errno.h" |
| #include <fcntl.h> |
| #include <sys/syscall.h> // For syscall numbers. |
| |
| namespace LIBC_NAMESPACE { |
| |
| LLVM_LIBC_FUNCTION(int, unlink, (const char *path)) { |
| #ifdef SYS_unlink |
| int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_unlink, path); |
| #elif defined(SYS_unlinkat) |
| int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_unlinkat, AT_FDCWD, path, 0); |
| #else |
| #error "unlink and unlinkat syscalls not available." |
| #endif |
| |
| if (ret < 0) { |
| libc_errno = -ret; |
| return -1; |
| } |
| return 0; |
| } |
| |
| } // namespace LIBC_NAMESPACE |