jmuehlner commented on code in PR #455:
URL: https://github.com/apache/guacamole-server/pull/455#discussion_r1305951003
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src/guacd/daemon.c:
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@@ -245,6 +246,49 @@ static void guacd_openssl_free_locks(int count) {
#endif
#endif
+/**
+ * A flag that, if non-zero, indicates that the daemon should immediately stop
+ * accepting new connections.
+ */
+int stop_everything = 0;
+
+/**
+ * A signal handler that will set a flag telling the daemon to immediately stop
+ * accepting new connections. Note that the signal itself will cause any
pending
+ * accept() calls to be interrupted, causing the daemon to unlock and begin
+ * cleaning up.
+ *
+ * @param signal
+ * The signal that was received. Unused in this function since only
+ * signals that should result in stopping the daemon should invoke this.
+ */
+static void signal_stop_handler(int signal) {
Review Comment:
These various signal handling mechanisms are to ensure that the daemon and
associated child processes will definitely stop, even if one of the children is
locked up due to deadlock or similar.
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