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50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
/*
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* Copyright (c) 2021, Peter Elliott <pelliott@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/ProcessStatisticsReader.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <signal.h>
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static Core::ProcessStatistics const& get_proc(Core::AllProcessesStatistics const& stats, pid_t pid)
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{
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for (auto& proc : stats.processes) {
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if (proc.pid == pid)
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return proc;
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}
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VERIFY_NOT_REACHED();
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}
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ErrorOr<int> serenity_main(Main::Arguments)
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{
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TRY(Core::System::pledge("stdio proc rpath"));
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TRY(Core::System::unveil("/proc/all", "r"));
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TRY(Core::System::unveil("/etc/passwd", "r"));
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TRY(Core::System::unveil(nullptr, nullptr));
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// logout finds the highest session up all nested sessions, and kills it.
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auto stats = Core::ProcessStatisticsReader::get_all();
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if (!stats.has_value()) {
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warnln("couldn't get process statistics");
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return 1;
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}
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pid_t sid = getsid(0);
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while (true) {
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pid_t parent = get_proc(stats.value(), sid).ppid;
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pid_t parent_sid = get_proc(stats.value(), parent).sid;
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if (parent_sid == 0)
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break;
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sid = parent_sid;
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}
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TRY(Core::System::kill(-sid, SIGTERM));
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return 0;
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}
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