kernel: shutdown when init quits

thanks to this it's easier to power off - instead of waiting for all
processses to quit (which now involves writing `quit` both on serial and
ps/2), one of those can just somehow kill init.

currently this is just done by exiting from any shell - init will return
from await and exit too

1 files changed, 5 insertions, 0 deletions

diff --git a/src/kernel/proc.c b/src/kernel/proc.c
index cf5bb1e..74660fa 100644
--- a/src/kernel/proc.c
+++ b/src/kernel/proc.c
@@ -137,6 +137,11 @@ void process_kill(struct process *proc, int ret) {
 	proc->state = PS_DEAD;
 	proc->death_msg = ret;
 	process_try2collect(proc);
+	if (proc == process_first) {
+		tty_const("init killed, quitting...");
+		mem_debugprint();
+		cpu_shutdown();
+	}
 }
 
 int process_try2collect(struct process *dead) {