+int detect_vm(const char **id);
+int detect_virtualization(const char **id);
+
+void execute_directory(const char *directory, DIR *_d, char *argv[]);
+
+int kill_and_sigcont(pid_t pid, int sig);
+
+bool nulstr_contains(const char*nulstr, const char *needle);
+
+#define NULSTR_FOREACH(i, l) \