C writing a linked list to a file

I would like to write all the integer values in the linked list on an individual line, I have a start but multiple errors and I am not sure where to go from here.

struct ListNode {
    int value;
    struct ListNode * next;
};        

int llist_save(LinkedList * list, char * file_name) {
    ListNode *e = list->head;
    FILE * fd = (file_name, "w");
    while(e != NULL){
        fprintf(fd, "%d\n", e->value);
        e = e->next;
    }
    fclose(fd);
}