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

2 files changed, 6 insertions, 1 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);
         }
     }
 
diff --git a/init/log.c b/init/log.c
index 9564053..83702c6 100644
--- a/init/log.c
+++ b/init/log.c
@@ -175,7 +175,9 @@ void _panic(const char *fileorigin,
 
     /* if we are going to die, we dont really need to clean up */
     if(mode == PANICMODE_DIE) {
-        kill(-getpgid(pid), SIGKILL);
+        kill(-getpgid(pid), SIGTERM);
+        raise(SIGTERM);
+        exit(0);
     }
 
     print(NOLOCK("5") "------------[ cut here ]------------");