add configuration for signal file and acl file, let user select hostname, catch signals and print why we are quiting, make nop cause one new version, not two

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21756 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/kadm5/ipropd_common.c

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 1997 - 2007 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#include "iprop.h"
+RCSID("$Id$");
+
+sig_atomic_t exit_flag;
+
+static RETSIGTYPE
+sigterm(int sig)
+{
+    exit_flag = sig;
+}
+
+void
+setup_signal(void)
+{
+#ifdef HAVE_SIGACTION
+    {
+	struct sigaction sa;
+
+	sa.sa_flags = 0;
+	sa.sa_handler = sigterm;
+	sigemptyset(&sa.sa_mask);
+
+	sigaction(SIGINT, &sa, NULL);
+	sigaction(SIGTERM, &sa, NULL);
+	sigaction(SIGXCPU, &sa, NULL);
+
+	sa.sa_handler = SIG_IGN;
+	sigaction(SIGPIPE, &sa, NULL);
+    }
+#else
+    signal(SIGINT, sigterm);
+    signal(SIGTERM, sigterm);
+    signal(SIGXCPU, sigterm);
+    signal(SIGPIPE, SIG_IGN);
+#endif
+}