audit: use bool for audit log choice

We weren't ever using the value for anything other than being non-zero.

* src/util/viraudit.h (virAuditLog): Change signature.
* src/util/viraudit.c (virAuditLog): Update user.
* daemon/libvirtd.c (main): Likewise.
Signed-off-by: NEric Blake <eblake@redhat.com>

daemon/libvirtd.c

@@ -1443,7 +1443,7 @@ int main(int argc, char **argv) {
             VIR_DEBUG("Proceeding without auditing");
         }
     }
-    virAuditLog(config->audit_logging);
+    virAuditLog(config->audit_logging > 0);
 
     /* setup the hooks if any */
     if (virHookInitialize() < 0) {

src/util/viraudit.c

@@ -53,7 +53,7 @@ VIR_LOG_INIT("util.audit");
 #if WITH_AUDIT
 static int auditfd = -1;
 #endif
-static int auditlog = 0;
+static bool auditlog;
 
 int virAuditOpen(void)
 {
@@ -70,7 +70,7 @@ int virAuditOpen(void)
 }
 
 
-void virAuditLog(int logging)
+void virAuditLog(bool logging)
 {
     auditlog = logging;
 }

src/util/viraudit.h

 /*
  * viraudit.h: auditing support
  *
- * Copyright (C) 2010-2011 Red Hat, Inc.
+ * Copyright (C) 2010-2011, 2014 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -34,7 +34,7 @@ typedef enum {
 
 int virAuditOpen(void);
 
-void virAuditLog(int enabled);
+void virAuditLog(bool enabled);
 
 void virAuditSend(virLogSourcePtr source,
                   const char *filename, size_t linenr, const char *funcname,