+char *chop(char *);
+char *strdelim(char **);
+void set_nonblock(int);
+void unset_nonblock(int);
+int a2port(const char *);
+char *cleanhostname(char *);
+char *colon(char *);
+long convtime(const char *);
+
+struct passwd *pwcopy(struct passwd *);
+
+typedef struct arglist arglist;
+struct arglist {
+ char **list;
+ int num;
+ int nalloc;
+};
+void addargs(arglist *, char *, ...) __attribute__((format(printf, 2, 3)));