less,klogd,syslogd,nc,tcpudp: exit on signal by killing itself, not exit(1)

*: minor shrink

1 files changed, 14 insertions, 0 deletions

diff --git a/libbb/signals.c b/libbb/signals.c
index f7e4908e7..b46b595da 100644
--- a/libbb/signals.c
+++ b/libbb/signals.c
@@ -78,3 +78,17 @@ void sig_pause(void)
         sigemptyset(&ss);
         sigsuspend(&ss);
 }
+
+/* Assuming the sig is fatal */
+void kill_myself_with_sig(int sig)
+{
+        sigset_t set;
+
+        signal(sig, SIG_DFL);
+
+        sigemptyset(&set);
+        sigaddset(&set, sig);
+        sigprocmask(SIG_UNBLOCK, &set, NULL);
+        raise(sig);
+        _exit(1); /* Should not reach it */
+}