init: modify panic termination sequence

in log: we ensure we panic by killing our process group with SIGTERM,
raising it for ourselves, and exiting (if all else fails simply).
in init: we catch SIGTERM and exit with 0 if we get it, as bash (and
likely others) prints a nasty "Terminated" to stderr

1 files changed, 3 insertions, 0 deletions

diff --git a/init/init.c b/init/init.c
index ecd3c25..5387043 100644
--- a/init/init.c
+++ b/init/init.c
@@ -103,6 +103,7 @@ int main(void)
     static sigset_t set;
     sigaddset(&set, SIGCHLD);
     sigaddset(&set, SIGINT);
+    sigaddset(&set, SIGTERM);
     sigprocmask(SIG_BLOCK, &set, NULL);
 
     while(subsystem_count > 0) {
@@ -119,6 +120,8 @@ int main(void)
             }
         } else if(sig == SIGINT) {
             panic("init: keyboard interrupt");
+        } else if(sig == SIGTERM) {
+            exit(0);
         }
     }