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SystemServer: Shut down after 5 seconds if testmode=1 is set on the kernel command line

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This commit is contained in:
Robin Burchell 2019-06-16 14:22:11 +02:00 committed by Andreas Kling
parent 0a3abcc0a8
commit 862682b1bb
Notes: sideshowbarker 2024-07-19 13:34:42 +09:00 
Author: https://github.com/rburchell
Commit: https://github.com/SerenityOS/serenity/commit/862682b1bba
Pull-request: https://github.com/SerenityOS/serenity/pull/233
1 changed files with 28 additions and 0 deletions
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28
Servers/SystemServer/main.cpp
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@ -5,6 +5,7 @@
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <LibCore/CFile.h>
void start_process(const char* prog, int prio)
{
@ -47,6 +48,30 @@ void start_process(const char* prog, int prio)
}
}
static void check_for_test_mode()
{
CFile f("/proc/cmdline");
if (!f.open(CIODevice::ReadOnly)) {
dbgprintf("Failed to read command line: %s\n", f.error_string());
ASSERT(false);
}
const String cmd = String::copy(f.read_all());
dbgprintf("Read command line: %s\n", cmd.characters());
if (cmd.matches("*testmode=1*")) {
// Eventually, we should run a test binary and wait for it to finish
// before shutting down. But this is good enough for now.
dbgprintf("Waiting for testmode shutdown...\n");
sleep(5);
dbgprintf("Shutting down due to testmode...\n");
if (fork() == 0) {
execl("/bin/shutdown", "/bin/shutdown", "-n", nullptr);
ASSERT_NOT_REACHED();
}
} else {
dbgprintf("Continuing normally\n");
}
}
int main(int, char**)
{
int lowest_prio = sched_get_priority_min(SCHED_OTHER);
@ -57,6 +82,9 @@ int main(int, char**)
start_process("/bin/Terminal", highest_prio - 1);
start_process("/bin/Launcher", highest_prio);
// This won't return if we're in test mode.
check_for_test_mode();
while (1) {
sleep(1);
}