user_path_at_empty 2602 fs/namei.c     EXPORT_SYMBOL(user_path_at_empty);
user_path_at_empty  399 fs/stat.c      	error = user_path_at_empty(dfd, pathname, lookup_flags, &path, &empty);
user_path_at_empty   44 include/linux/namei.h extern int user_path_at_empty(int, const char __user *, unsigned, struct path *, int *empty);
user_path_at_empty   49 include/linux/namei.h 	return user_path_at_empty(dfd, name, flags, path, NULL);