Reopen logs when SIGHUP is caught

Upon receiving SIGHUP, the monitor signals all services to reopen their
debug logs. It is also possible to signal individual services to reopen
their particular files.

Fixes: #332

3 files changed, 26 insertions, 3 deletions

diff --git a/src/monitor/monitor.c b/src/monitor/monitor.c
index 0f9fb95e3..56a74fba6 100644
--- a/src/monitor/monitor.c
+++ b/src/monitor/monitor.c
@@ -742,6 +742,10 @@ static int service_signal_offline(struct mt_svc *svc)
 {
     return service_signal(svc, MON_CLI_METHOD_OFFLINE);
 }
+static int service_signal_rotate(struct mt_svc *svc)
+{
+    return service_signal(svc, MON_CLI_METHOD_ROTATE);
+}
 
 static int check_domain_ranges(struct sss_domain_info *domains)
 {
@@ -1103,11 +1107,14 @@ static void monitor_hup(struct tevent_context *ev,
                         void *private_data)
 {
     struct mt_ctx *ctx = talloc_get_type(private_data, struct mt_ctx);
+    struct mt_svc *cur_svc;
 
     DEBUG(1, ("Received SIGHUP.\n"));
-    /* Right now this function doesn't do anything.
-     * It will handle logrotate HUPs soon.
-     */
+
+    /* Signal all services to rotate debug files */
+    for(cur_svc = ctx->svc_list; cur_svc; cur_svc = cur_svc->next) {
+        service_signal_rotate(cur_svc);
+    }
 }
 
 static int monitor_cleanup(void)
diff --git a/src/monitor/monitor_interfaces.h b/src/monitor/monitor_interfaces.h
index 205b072e6..8e334ab73 100644
--- a/src/monitor/monitor_interfaces.h
+++ b/src/monitor/monitor_interfaces.h
@@ -41,6 +41,7 @@
 #define MON_CLI_METHOD_SHUTDOWN "shutDown"
 #define MON_CLI_METHOD_RES_INIT "resInit"
 #define MON_CLI_METHOD_OFFLINE "goOffline" /* Applicable only to providers */
+#define MON_CLI_METHOD_ROTATE "rotateLogs"
 
 #define SSSD_SERVICE_PIPE "private/sbus-monitor"
 
@@ -51,4 +52,6 @@ int monitor_common_pong(DBusMessage *message,
                         struct sbus_connection *conn);
 int monitor_common_res_init(DBusMessage *message,
                             struct sbus_connection *conn);
+int monitor_common_rotate_logs(DBusMessage *message,
+                               struct sbus_connection *conn);
 
diff --git a/src/monitor/monitor_sbus.c b/src/monitor/monitor_sbus.c
index 3f73e84f7..d60a087e5 100644
--- a/src/monitor/monitor_sbus.c
+++ b/src/monitor/monitor_sbus.c
@@ -193,3 +193,16 @@ int monitor_common_res_init(DBusMessage *message,
     return monitor_common_pong(message, conn);
 }
 
+int monitor_common_rotate_logs(DBusMessage *message,
+                               struct sbus_connection *conn)
+{
+    int ret;
+
+    ret = rotate_debug_files();
+    if (ret) {
+        DEBUG(1, ("Could not rotate debug files!\n"));
+        return ret;
+    }
+
+    return monitor_common_pong(message, conn);
+}