int chvt(int vt);
int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);
-int ask(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
+int ask_char(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
+int ask_string(char **ret, const char *text, ...) _printf_(2, 3);
int reset_terminal_fd(int fd, bool switch_to_text);
int reset_terminal(const char *name);
bool hostname_is_valid(const char *s) _pure_;
char* hostname_cleanup(char *s, bool lowercase);
+bool machine_name_is_valid(const char *s) _pure_;
+
char* strshorten(char *s, size_t l);
int terminal_vhangup_fd(int fd);
bool filename_is_safe(const char *p) _pure_;
bool path_is_safe(const char *p) _pure_;
bool string_is_safe(const char *p) _pure_;
-bool string_has_cc(const char *p) _pure_;
+bool string_has_cc(const char *p, const char *ok) _pure_;
/**
* Check if a string contains any glob patterns.
char *tempfn_random(const char *p);
bool is_localhost(const char *hostname);
+
+int take_password_lock(const char *root);