ANSIfy function prototypes. While I am there, constify some parameters and

make use of C99 sparse initialization for static variables, this makes talk(1)
to compile cleanly with WARNS=6.

usr.bin/talk/ctl.c

@@ -52,9 +52,9 @@ static const char sccsid[] = "@(#)ctl.c	8.1 (Berkeley) 6/6/93";
 
 #include "talk.h"
 
-struct	sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
-struct	sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
-struct	sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
+struct	sockaddr_in daemon_addr = { .sin_len = sizeof(daemon_addr), .sin_family = AF_INET };
+struct	sockaddr_in ctl_addr = { .sin_len = sizeof(ctl_addr), .sin_family = AF_INET };
+struct	sockaddr_in my_addr = { .sin_len = sizeof(my_addr), .sin_family = AF_INET };
 
 	/* inet addresses of the two machines */
 struct	in_addr my_machine_addr;
@@ -69,7 +69,7 @@ int	invitation_waiting = 0;
 CTL_MSG msg;
 
 void
-open_sockt()
+open_sockt(void)
 {
 	socklen_t length;
 
@@ -90,7 +90,7 @@ open_sockt()
 
 /* open the ctl socket */
 void
-open_ctl()
+open_ctl(void)
 {
 	socklen_t length;
 
@@ -113,8 +113,7 @@ open_ctl()
 
 /* print_addr is a debug print routine */
 void
-print_addr(addr)
-	struct sockaddr_in addr;
+print_addr(struct sockaddr_in addr)
 {
 	int i;
 

usr.bin/talk/ctl_transact.c

@@ -55,11 +55,7 @@ static const char sccsid[] = "@(#)ctl_transact.c	8.1 (Berkeley) 6/6/93";
  * of time
  */
 void
-ctl_transact(target, lmsg, type, rp)
-	struct in_addr target;
-	CTL_MSG lmsg;
-	int type;
-	CTL_RESPONSE *rp;
+ctl_transact(struct in_addr target, CTL_MSG lmsg, int type, CTL_RESPONSE *rp)
 {
 	fd_set read_mask, ctl_mask;
 	int nready = 0, cc;

usr.bin/talk/display.c

@@ -58,8 +58,7 @@ int	curses_initialized = 0;
  * an argument of the form --foo at least once.
  */
 int
-max(a,b)
-	int a, b;
+max(int a, int b)
 {
 
 	return (a > b ? a : b);
@@ -70,10 +69,7 @@ max(a,b)
  * characters while we are at it.
  */
 void
-display(win, text, size)
-	xwin_t *win;
-	char *text;
-	int size;
+display(xwin_t *win, char *text, int size)
 {
 	int i;
 	char cch;
@@ -180,10 +176,7 @@ display(win, text, size)
  * Read the character at the indicated position in win
  */
 int
-readwin(win, line, col)
-	WINDOW *win;
-	int line;
-	int col;
+readwin(WINDOW *win, int line, int col)
 {
 	int oldline, oldcol;
 	int c;

usr.bin/talk/get_addrs.c

@@ -47,8 +47,7 @@ static const char sccsid[] = "@(#)get_addrs.c	8.1 (Berkeley) 6/6/93";
 #include "talk_ctl.h"
 
 void
-get_addrs(my_machine_name, his_machine_name)
-	char *my_machine_name __unused, *his_machine_name;
+get_addrs(const char *my_machine_name __unused, const char *his_machine_name)
 {
 	struct hostent *hp;
 	struct servent *sp;

usr.bin/talk/get_iface.c

@@ -47,9 +47,7 @@ __FBSDID("$FreeBSD$");
  */
 
 int
-get_iface(dst, iface)
-	struct in_addr *dst;
-	struct in_addr *iface;
+get_iface(struct in_addr *dst, struct in_addr *iface)
 {
 	static struct sockaddr_in local;
 	struct sockaddr_in remote;

usr.bin/talk/get_names.c

@@ -61,13 +61,11 @@ usage(void)
  * Determine the local and remote user, tty, and machines
  */
 void
-get_names(argc, argv)
-	int argc;
-	char *argv[];
+get_names(int argc, char *argv[])
 {
 	char hostname[MAXHOSTNAMELEN];
 	char *his_name, *my_name;
-	char *my_machine_name, *his_machine_name;
+	const char *my_machine_name, *his_machine_name;
 	const char *his_tty;
 	char *cp;
 

usr.bin/talk/init_disp.c

@@ -60,7 +60,7 @@ extern volatile sig_atomic_t gotwinch;
  * Make sure the callee can write to the screen
  */
 void
-check_writeable()
+check_writeable(void)
 {
 	char *tty;
 	struct stat sb;
@@ -78,7 +78,7 @@ check_writeable()
  * and build the various windows.
  */
 void
-init_display()
+init_display(void)
 {
 	struct sigaction sa;
 
@@ -128,7 +128,7 @@ init_display()
  * connection are the three edit characters.
  */
 void
-set_edit_chars()
+set_edit_chars(void)
 {
 	char buf[3];
 	int cc;
@@ -160,8 +160,7 @@ set_edit_chars()
 
 /* ARGSUSED */
 void
-sig_sent(signo)
-	int signo __unused;
+sig_sent(int signo __unused)
 {
 
 	message("Connection closing. Exiting");
@@ -169,7 +168,7 @@ sig_sent(signo)
 }
 
 void
-sig_winch(int dummy)
+sig_winch(int dummy __unused)
 {
  
 	gotwinch = 1;
@@ -179,7 +178,7 @@ sig_winch(int dummy)
  * All done talking...hang up the phone and reset terminal thingy's
  */
 void
-quit()
+quit(void)
 {
 
 	if (curses_initialized) {

usr.bin/talk/invite.c

@@ -67,7 +67,7 @@ int	local_id, remote_id;
 jmp_buf invitebuf;
 
 void
-invite_remote()
+invite_remote(void)
 {
 	int new_sockt;
 	struct itimerval itimer;
@@ -124,8 +124,7 @@ invite_remote()
  */
 /* ARGSUSED */
 void
-re_invite(signo)
-	int signo __unused;
+re_invite(int signo __unused)
 {
 
 	message("Ringing your party again");
@@ -155,7 +154,7 @@ static	const char *answers[] = {
  * Transmit the invitation and process the response
  */
 void
-announce_invite()
+announce_invite(void)
 {
 	CTL_RESPONSE response;
 
@@ -177,7 +176,7 @@ announce_invite()
  * Tell the daemon to remove your invitation
  */
 void
-send_delete()
+send_delete(void)
 {
 
 	msg.type = DELETE;

usr.bin/talk/io.c

@@ -65,7 +65,7 @@ volatile sig_atomic_t gotwinch = 0;
  * The routine to do the actual talking
  */
 void
-talk()
+talk(void)
 {
 	struct hostent *hp, *hp2;
 	int nb;
@@ -138,7 +138,7 @@ talk()
 			 */
 			int i;
 			ioctl(0, FIONREAD, (void *) &nb);
-			if (nb > sizeof buf)
+			if (nb > (ssize_t)(sizeof buf))
 				nb = sizeof buf;
 			nb = read(STDIN_FILENO, buf, nb);
 			display(&my_win, buf, nb);
@@ -156,8 +156,7 @@ talk()
  * on the screen and then exits. (i.e. a curses version of perror)
  */
 void
-p_error(string)
-	const char *string;
+p_error(const char *string)
 {
 	wmove(my_win.x_win, current_line, 0);
 	wprintw(my_win.x_win, "[%s : %s (%d)]\n",
@@ -172,8 +171,7 @@ p_error(string)
  * Display string in the standard location
  */
 void
-message(string)
-	const char *string;
+message(const char *string)
 {
 	wmove(my_win.x_win, current_line, 0);
 	wprintw(my_win.x_win, "[%s]\n", string);

usr.bin/talk/look_up.c

@@ -53,7 +53,7 @@ static const char sccsid[] = "@(#)look_up.c	8.1 (Berkeley) 6/6/93";
  * See if the local daemon has an invitation for us.
  */
 int
-check_local()
+check_local(void)
 {
 	CTL_RESPONSE response;
 	CTL_RESPONSE *rp = &response;
@@ -106,8 +106,7 @@ check_local()
  * Look for an invitation on 'machine'
  */
 int
-look_for_invite(rp)
-	CTL_RESPONSE *rp;
+look_for_invite(CTL_RESPONSE *rp)
 {
 	current_state = "Checking for invitation on caller's machine";
 	ctl_transact(his_machine_addr, msg, LOOK_UP, rp);

usr.bin/talk/msgs.c

@@ -55,14 +55,13 @@ int	current_line = 0;
 
 /* ARGSUSED */
 void
-disp_msg(signo)
-	int signo __unused;
+disp_msg(int signo __unused)
 {
 	message(current_state);
 }
 
 void
-start_msgs()
+start_msgs(void)
 {
 	struct itimerval itimer;
 
@@ -74,7 +73,7 @@ start_msgs()
 }
 
 void
-end_msgs()
+end_msgs(void)
 {
 	struct itimerval itimer;
 

usr.bin/talk/talk.c

@@ -65,14 +65,12 @@ static const char copyright[] =
  */
 
 int
-main(argc, argv)
-	int argc;
-	char *argv[];
+main(int argc, char **argv)
 {
 	(void) setlocale(LC_CTYPE, "");
 
 	get_names(argc, argv);
-	setproctitle("");
+	setproctitle(" ");
 	check_writeable();
 	init_display();
 	open_ctl();

usr.bin/talk/talk.h

@@ -73,7 +73,7 @@ extern	void	ctl_transact(struct in_addr,CTL_MSG,int,CTL_RESPONSE *);
 extern	void	disp_msg(int);
 extern	void	display(xwin_t *, char *, int);
 extern	void	end_msgs(void);
-extern	void	get_addrs(char *, char *);
+extern	void	get_addrs(const char *, const char *);
 extern	int	get_iface(struct in_addr *, struct in_addr *);
 extern	void	get_names(int, char **);
 extern	void	init_display(void);