jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2022, Peter Elliott <pelliott@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibCore/Directory.h>
8#include <LibCore/SessionManagement.h>
9#include <LibCore/System.h>
10
11#ifdef AK_OS_SERENITY
12# include <LibSystem/syscall.h>
13#endif
14
15namespace Core::SessionManagement {
16
17ErrorOr<pid_t> root_session_id([[maybe_unused]] Optional<pid_t> force_sid)
18{
19#ifdef AK_OS_SERENITY
20 int rc = syscall(SC_get_root_session_id, force_sid.value_or(-1));
21 if (rc < 0) {
22 return Error::from_syscall("get_root_session_id"sv, rc);
23 }
24 return static_cast<pid_t>(rc);
25#else
26 return 0;
27#endif
28}
29
30ErrorOr<void> logout(Optional<pid_t> force_sid)
31{
32 pid_t sid = TRY(root_session_id(force_sid));
33 TRY(System::kill(-sid, SIGTERM));
34 return {};
35}
36
37ErrorOr<DeprecatedString> parse_path_with_sid(StringView general_path, Optional<pid_t> force_sid)
38{
39 if (general_path.contains("%sid"sv)) {
40 pid_t sid = TRY(root_session_id(force_sid));
41 return general_path.replace("%sid"sv, DeprecatedString::number(sid), ReplaceMode::All);
42 }
43 return DeprecatedString(general_path);
44}
45
46ErrorOr<void> create_session_temporary_directory_if_needed(uid_t uid, gid_t gid, Optional<pid_t> force_sid)
47{
48 pid_t sid = TRY(root_session_id(force_sid));
49 auto const temporary_directory = DeprecatedString::formatted("/tmp/session/{}", sid);
50 auto directory = TRY(Core::Directory::create(temporary_directory, Core::Directory::CreateDirectories::Yes));
51 TRY(directory.chown(uid, gid));
52 return {};
53}
54
55}