From de00dd2a7ea6202c2f154f2e3f4fd54e3cac32cc Mon Sep 17 00:00:00 2001
From: Rainer Gerhards <rgerhards@adiscon.com>
Date: Thu, 9 Aug 2007 13:44:36 +0000
Subject: added module unload functionality; rsyslogd now unloads modules on
 exit (of     course, with only statically linked modules, there is little
 current     value in this - but it is made towards an upcoming dynaload
 plugin     interface)

---
 modules.c | 21 +++++++++++++++++++++
 modules.h |  1 +
 syslogd.c | 28 ++++++++++++++++------------
 3 files changed, 38 insertions(+), 12 deletions(-)

diff --git a/modules.c b/modules.c
index 01bba104..5ecceecd 100644
--- a/modules.c
+++ b/modules.c
@@ -308,6 +308,27 @@ void modPrintList(void)
 }
 
 
+/* unload all modules and free module linked list
+ * rgerhards, 2007-08-09
+ */
+rsRetVal modUnloadAndDestructAll(void)
+{
+	DEFiRet;
+	modInfo_t *pMod;
+	modInfo_t *pModPrev;
+
+	pMod = modGetNxt(NULL);
+	while(pMod != NULL) {
+		pModPrev = pMod;
+		pMod = modGetNxt(pModPrev); /* get next */
+		/* now we can destroy the previous module */
+		dbgprintf("Unloading module %s\n", modGetName(pModPrev));
+		modUnload(pModPrev);
+		moduleDestruct(pModPrev);
+	}
+
+	return iRet;
+}
 /*
  * vi:set ai:
  */
diff --git a/modules.h b/modules.h
index 7837f0fd..0fda461a 100644
--- a/modules.h
+++ b/modules.h
@@ -92,6 +92,7 @@ modInfo_t *omodGetNxt(modInfo_t *pThis);
 uchar *modGetName(modInfo_t *pThis);
 uchar *modGetStateName(modInfo_t *pThis);
 void modPrintList(void);
+rsRetVal modUnloadAndDestructAll(void);
 
 #endif /* #ifndef MODULES_H_INCLUDED */
 /*
diff --git a/syslogd.c b/syslogd.c
index b74bdb89..9cf51b34 100644
--- a/syslogd.c
+++ b/syslogd.c
@@ -3543,6 +3543,22 @@ static void die(int sig)
 	remove_pid(PidFile);
 	if(glblHadMemShortage)
 		dbgprintf("Had memory shortage at least once during the run.\n");
+
+	/* de-init some modules */
+	modExitIminternal();
+
+	/* TODO: this would also be the right place to de-init the builtin output modules. We
+	 * do not currently do that, because the module interface does not allow for
+	 * it. This will come some time later (it's essential with loadable modules).
+	 * For the time being, this is a memory leak on exit, but as the process is
+	 * terminated, we do not really bother about it.
+	 * rgerhards, 2007-08-03
+	 * I have added some code now, but all that mod init/de-init should be moved to
+	 * init, so that modules are unloaded and reloaded on HUP to. Eventually it should go
+	 * into freeSelectors() - but that needs to be seen. -- rgerhards, 2007-08-09
+	 */
+	modUnloadAndDestructAll();
+
 	dbgprintf("Clean shutdown completed, bye.\n");
 	exit(0); /* "good" exit, this is the terminator function for rsyslog [die()] */
 }
@@ -6173,18 +6189,6 @@ int main(int argc, char **argv)
 	 */
 
 	mainloop();
-
-	/* de-init some modules */
-	modExitIminternal();
-
-	/* TODO: this would also be the right place to de-init the builtin output modules. We
-	 * do not currently do that, because the module interface does not allow for
-	 * it. This will come some time later (it's essential with loadable modules).
-	 * For the time being, this is a memory leak on exit, but as the process is
-	 * terminated, we do not really bother about it.
-	 * rgerhards, 2007-08-03
-	 */
-
 	/* end de-init's */
 
 	die(bFinished);
-- 
cgit