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//===-- 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 "src/errno/libc_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;
libc_errno = -ret;
return -1;
}
} // namespace __llvm_libc
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