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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 <AK/StringView.h>
8#include <Kernel/FileSystem/VirtualFileSystem.h>
9#include <Kernel/Process.h>
10
11namespace Kernel {
12
13ErrorOr<FlatPtr> Process::sys$utime(Userspace<char const*> user_path, size_t path_length, Userspace<const struct utimbuf*> user_buf)
14{
15 VERIFY_NO_PROCESS_BIG_LOCK(this);
16 TRY(require_promise(Pledge::fattr));
17 auto path = TRY(get_syscall_path_argument(user_path, path_length));
18 utimbuf buf;
19 if (user_buf) {
20 TRY(copy_from_user(&buf, user_buf));
21 } else {
22 auto now = kgettimeofday().to_truncated_seconds();
23 // Not a bug!
24 buf = { now, now };
25 }
26 TRY(VirtualFileSystem::the().utime(credentials(), path->view(), current_directory(), buf.actime, buf.modtime));
27 return 0;
28}
29
30}