Correcting out linkedlist add function.

linkedlist.c

@@ -14,21 +14,24 @@ LinkedList *linkedlist_new() {
  * Add a char * to our linked list and set up a new head.
  * @param head The first node in the list.
  * @param data Our data to add to the list.
- * @return
  */
-void *linkedlist_add(LinkedList *head, char *data) {
+void linkedlist_add(LinkedList *head, char *data) {
+    // Create a pointer to the head element.
+    LinkedList *tmp = head;
+
+    // Head was null? Create a new node.
     if (head == NULL) {
         head = linkedlist_new();
-    }
-    if (head->data == NULL) {
         head->data = data;
     }
-    LinkedList *tmp = linkedlist_new();
-    // Set the head pointer to the next node.
-    head->next = tmp;
+    else {
+        // Iterate until we don't have a next node.
+        while ((tmp = tmp->next) != NULL) ;
 
-    // Set head to tmp.
-    head = tmp;
+        tmp->next = linkedlist_new();
+        tmp->next->data = data;
+        tmp->next->next = NULL;
+    }
 }
 
 void free_node(LinkedList *node) {

linkedlist.h

@@ -16,6 +16,6 @@ typedef struct linkedlist {
 } LinkedList;
 
 LinkedList *linkedlist_new();
-void *linkedlist_add(LinkedList *head, char *data);
-
+void linkedlist_add(LinkedList *head, char *data);
+void linkedlist_print(LinkedList *head, char *data);
 #endif //HOSTBLOCKER_LINKEDLIST_H

main.c

@@ -24,7 +24,8 @@ const char *blockString = "0.0.0.0 ";
 LinkedList *hosts = (LinkedList *) NULL;
 
 // The current hardcoded location of the hosts file.
-static const char *HOSTFILE = "/etc/hosts";
+static char *HOSTFILE = "/etc/hosts";
+static char *CONFIG;
 // Our configuration
 
 /**
@@ -100,6 +101,7 @@ void showHosts()
  */
 int read_config_file() {
     // increment the refcount for tmp.
+
     linkedlist_add(hosts, "hello.com");
 }
 
@@ -179,7 +181,7 @@ int main(int argc, char **argv)
             showHosts();
         }
         else if (strcmp(argv[i], "-config") == 0) {
-            CONFIG = argv[i];
+            CONFIG = argv[++i];
         }
 
         // Daemonize this process, allowing for hosts file to be automagically managed.