Add uc_log_destination_set_log_location, fix signed/unsigned use

src/logging.c

@@ -80,15 +80,15 @@ static const char *const g_debug_levels[] = {
 
 inline const char *uc_ll_2_str(enum UC_LOG_LEVEL l)
 {
-    if (l >= 0 && l < (int)ARRAY_SIZE(g_debug_levels)) {
+    if (l < ARRAY_SIZE(g_debug_levels)) {
         return g_debug_levels[l];
     } else {
         return "???";
     }
 }
 
-//returns -1 if the string is not a known log level
-static enum UC_LOG_LEVEL uc_str_2_ll(const char *str)
+//returns  if the string is not a known log level
+static int uc_str_2_ll(const char *str)
 {
     size_t i;
 
@@ -313,6 +313,9 @@ void uc_log_delete_destination(struct uc_log_destination *dest)
 
 void uc_log_destination_set_loglevel(struct uc_log_destination *dest, enum UC_LOG_LEVEL level)
 {
+    if (dest == NULL)
+        return;
+
     pthread_mutex_lock(&g_log_lock);
 
     dest->log_level = level;
@@ -320,10 +323,25 @@ void uc_log_destination_set_loglevel(struct uc_log_destination *dest, enum UC_LO
     pthread_mutex_unlock(&g_log_lock);
 }
 
+void uc_log_destination_set_log_location(struct uc_log_destination *dest, int log_location)
+{
+    if (dest == NULL)
+        return;
+
+    pthread_mutex_lock(&g_log_lock);
+
+    dest->log_location = log_location;
+
+    pthread_mutex_unlock(&g_log_lock);
+}
+
 static int uc_log_reopen_file(struct uc_log_destination *dest)
 {
     int rc = 0;
 
+    if (dest == NULL)
+        return -1;
+
     if (dest->type.file.file != NULL) {
         fclose(dest->type.file.file);
         dest->type.file.file = NULL;