X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=signal.c;h=9b328caf6550da385eb64c824217da7f3abd4588;hb=10596c5a763716368579b6313953ae0861b03ad4;hp=9153349fa8b20e96e56dfac3522aebdc2a6ebaff;hpb=a61e862450dc1e74394bf5bbf7002d9947f98d31;p=paraslash.git

diff --git a/signal.c b/signal.c
index 9153349f..9b328caf 100644
--- a/signal.c
+++ b/signal.c
@@ -1,8 +1,4 @@
-/*
- * Copyright (C) 2004 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2004 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
 /** \file signal.c Signal handling functions. */
 
 #include <signal.h>
@@ -76,10 +72,13 @@ static void generic_signal_handler(int s)
 		errno = save_errno;
 		return;
 	}
-	if (ret < 0)
-		PARA_EMERG_LOG("%s\n", strerror(errno));
-	else
-		PARA_EMERG_LOG("short write to signal pipe\n");
+	/*
+	 * This is a fatal error which should never happen. We must not call
+	 * PARA_XXX_LOG() here because this might acquire the log mutex which
+	 * is already taken by the main program if the interrupt occurs while a
+	 * log message is being printed. The mutex will not be released as long
+	 * as this signal handler is running, so a deadlock ensues.
+	 */
 	exit(EXIT_FAILURE);
 }