jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <Kernel/FileSystem/OpenFileDescription.h>
8#include <Kernel/Process.h>
9
10namespace Kernel {
11
12ErrorOr<FlatPtr> Process::sys$get_dir_entries(int fd, Userspace<void*> user_buffer, size_t user_size)
13{
14 VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
15 TRY(require_promise(Pledge::stdio));
16 if (user_size > NumericLimits<ssize_t>::max())
17 return EINVAL;
18 auto description = TRY(open_file_description(fd));
19 auto buffer = TRY(UserOrKernelBuffer::for_user_buffer(user_buffer, static_cast<size_t>(user_size)));
20 auto count = TRY(description->get_dir_entries(buffer, user_size));
21 return count;
22}
23
24}