X-Git-Url: https://git.cameronkatri.com/bsdgames-darwin.git/blobdiff_plain/77e3814f0c0e3dea4d0032e25666f77e6f83bfff..32a54d49158271df4ffa0cf4422f612647973022:/sail/dr_main.c

diff --git a/sail/dr_main.c b/sail/dr_main.c
index c6e49681..167c512a 100644
--- a/sail/dr_main.c
+++ b/sail/dr_main.c
@@ -1,6 +1,8 @@
+/*	$NetBSD: dr_main.c,v 1.15 2010/08/06 09:14:40 dholland Exp $	*/
+
 /*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -10,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,40 +29,58 @@
  * SUCH DAMAGE.
  */
 
+#include <sys/cdefs.h>
 #ifndef lint
-static char sccsid[] = "@(#)dr_main.c	5.5 (Berkeley) 6/1/90";
+#if 0
+static char sccsid[] = "@(#)dr_main.c	8.2 (Berkeley) 4/16/94";
+#else
+__RCSID("$NetBSD: dr_main.c,v 1.15 2010/08/06 09:14:40 dholland Exp $");
+#endif
 #endif /* not lint */
 
+#include <err.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "extern.h"
 #include "driver.h"
+#include "player.h" /* XXX for LEAVE_FORK */
+#include "restart.h"
+
+static int driver_wait_fd = -1;
 
-dr_main()
+int
+dr_main(void)
 {
-	register int n;
-	register struct ship *sp;
+	int n;
+	struct ship *sp;
 	int nat[NNATION];
 	int value = 0;
 
-	(void) signal(SIGINT, SIG_IGN);
-	(void) signal(SIGQUIT, SIG_IGN);
-	(void) signal(SIGTSTP, SIG_IGN);
-	if (issetuid)
-		(void) setruid(geteuid());
+	/*
+	 * XXX need a way to print diagnostics back to the player
+	 * process instead of stomping on the curses screen.
+	 */
+
+	signal(SIGINT, SIG_IGN);
+	signal(SIGQUIT, SIG_IGN);
+	signal(SIGTSTP, SIG_IGN);
 	if (game < 0 || game >= NSCENE) {
-		fprintf(stderr, "DRIVER: Bad game number %d\n", game);
-		exit(1);
+		errx(1, "\ndriver: Bad game number %d", game);
 	}
 	cc = &scene[game];
 	ls = SHIP(cc->vessels);
 	if (sync_open() < 0) {
-		perror("driver: syncfile");
-		exit(1);
+		err(1, "\ndriver: syncfile");
 	}
 	for (n = 0; n < NNATION; n++)
 		nat[n] = 0;
 	foreachship(sp) {
 		if (sp->file == NULL &&
-		    (sp->file = (struct File *)calloc(1, sizeof (struct File))) == NULL) {
-			(void) fprintf(stderr, "DRIVER: Out of memory.\n");
+		    (sp->file = calloc(1, sizeof (struct File))) == NULL) {
+			fprintf(stderr, "\nDRIVER: Out of memory.\n");
 			exit(1);
 		}
 		sp->file->index = sp - SHIP(0);
@@ -80,6 +96,12 @@ dr_main()
 	windspeed = cc->windspeed;
 	winddir = cc->winddir;
 	people = 0;
+
+	/* report back to the player process that we've started */
+	if (driver_wait_fd >= 0) {
+		close(driver_wait_fd);
+	}
+
 	for (;;) {
 		sleep(7);
 		if (Sync() < 0) {
@@ -106,3 +128,35 @@ dr_main()
 	sync_close(1);
 	return value;
 }
+
+void
+startdriver(void)
+{
+	int fds[2];
+	char c;
+
+	if (pipe(fds)) {
+		warn("pipe");
+		leave(LEAVE_FORK);
+		return;
+	}
+
+	switch (fork()) {
+	    case 0:
+		close(fds[0]);
+		driver_wait_fd = fds[1];
+		longjmp(restart, MODE_DRIVER);
+		/*NOTREACHED*/
+	    case -1:
+		warn("fork");
+		close(fds[0]);
+		close(fds[1]);
+		leave(LEAVE_FORK);
+		break;
+	    default:
+		hasdriver++;
+		close(fds[1]);
+		read(fds[0], &c, 1);
+		close(fds[0]);
+	}
+}