mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 08:48:11 +00:00
94ca55cefd
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
137 lines
4.4 KiB
C++
137 lines
4.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "Service.h"
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#include <AK/Assertions.h>
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#include <LibCore/CConfigFile.h>
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#include <LibCore/CEventLoop.h>
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#include <LibCore/CFile.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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static void sigchld_handler(int)
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{
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int status = 0;
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pid_t pid = waitpid(-1, &status, WNOHANG);
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if (!pid)
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return;
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dbg() << "Reaped child with pid " << pid;
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Service* service = Service::find_by_pid(pid);
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if (service == nullptr) {
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dbg() << "There was no service with this pid, what is going on?";
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return;
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}
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// Call service->did_exit(status) some time soon.
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// We wouldn't want to run the complex logic, such
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// as possibly spawning the service again, from the
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// signal handler, so defer it.
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CEventLoop::main().post_event(*service, make<CDeferredInvocationEvent>([=](CObject&) {
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service->did_exit(status);
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}));
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CEventLoop::wake();
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}
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static void check_for_test_mode()
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{
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auto f = CFile::construct("/proc/cmdline");
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if (!f->open(CIODevice::ReadOnly)) {
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dbg() << "Failed to read command line: " << f->error_string();
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ASSERT(false);
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}
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const String cmd = String::copy(f->read_all());
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dbg() << "Read command line: " << cmd;
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if (cmd.matches("*testmode=1*")) {
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// Eventually, we should run a test binary and wait for it to finish
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// before shutting down. But this is good enough for now.
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dbg() << "Waiting for testmode shutdown...";
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sleep(5);
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dbg() << "Shutting down due to testmode...";
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if (fork() == 0) {
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execl("/bin/shutdown", "/bin/shutdown", "-n", nullptr);
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ASSERT_NOT_REACHED();
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}
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} else {
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dbg() << "Continuing normally";
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}
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}
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static void mount_all_filesystems()
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{
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dbg() << "Spawning mount -a to mount all filesystems.";
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pid_t pid = fork();
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if (pid < 0) {
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perror("fork");
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ASSERT_NOT_REACHED();
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} else if (pid == 0) {
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execl("/bin/mount", "mount", "-a", nullptr);
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perror("exec");
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ASSERT_NOT_REACHED();
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} else {
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wait(nullptr);
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}
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}
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int main(int, char**)
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{
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if (pledge("stdio proc exec tty accept unix rpath wpath cpath chown fattr id", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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mount_all_filesystems();
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struct sigaction sa = {
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.sa_handler = sigchld_handler,
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.sa_mask = 0,
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.sa_flags = SA_RESTART
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};
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sigaction(SIGCHLD, &sa, nullptr);
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CEventLoop event_loop;
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// Read our config and instantiate services.
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// This takes care of setting up sockets.
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Vector<RefPtr<Service>> services;
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auto config = CConfigFile::get_for_system("SystemServer");
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for (auto name : config->groups())
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services.append(Service::construct(*config, name));
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// After we've set them all up, activate them!
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for (auto& service : services)
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service->activate();
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// This won't return if we're in test mode.
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check_for_test_mode();
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return event_loop.exec();
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}
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