initial import of NetBSD tree

1 files changed, 108 insertions, 0 deletions

diff --git a/usr.bin/window/wwenviron.c b/usr.bin/window/wwenviron.c
new file mode 100644
index 00000000000..69a168a3308
--- /dev/null
+++ b/usr.bin/window/wwenviron.c
@@ -0,0 +1,108 @@
+/*	$NetBSD: wwenviron.c,v 1.3 1995/09/28 10:35:27 tls Exp $	*/
+
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)wwenviron.c	8.1 (Berkeley) 6/6/93";
+#else
+static char rcsid[] = "$NetBSD: wwenviron.c,v 1.3 1995/09/28 10:35:27 tls Exp $";
+#endif
+#endif /* not lint */
+
+#include "ww.h"
+#if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY)
+#include <sys/ioctl.h>
+#endif
+#include <sys/signal.h>
+
+/*
+ * Set up the environment of this process to run in window 'wp'.
+ */
+wwenviron(wp)
+register struct ww *wp;
+{
+	register i;
+#ifndef TIOCSCTTY
+	int pgrp = getpid();
+#endif
+	char buf[1024];
+
+#ifndef TIOCSCTTY
+	if ((i = open("/dev/tty", 0)) < 0)
+		goto bad;
+	if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
+		goto bad;
+	(void) close(i);
+#endif
+	if ((i = wp->ww_socket) < 0) {
+		if ((i = open(wp->ww_ttyname, 2)) < 0)
+			goto bad;
+		if (wwsettty(i, &wwwintty) < 0)
+			goto bad;
+		if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
+			goto bad;
+	}
+	(void) dup2(i, 0);
+	(void) dup2(i, 1);
+	(void) dup2(i, 2);
+	(void) close(i);
+#ifdef TIOCSCTTY
+	(void) setsid();
+	(void) ioctl(0, TIOCSCTTY, 0);
+#else
+	(void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
+	(void) setpgrp(pgrp, pgrp);
+#endif
+	/* SIGPIPE is the only one we ignore */
+	(void) signal(SIGPIPE, SIG_DFL);
+	(void) sigsetmask(0);
+	/*
+	 * Two conditions that make destructive setenv ok:
+	 * 1. setenv() copies the string,
+	 * 2. we've already called tgetent which copies the termcap entry.
+	 */
+	(void) sprintf(buf, "%sco#%d:li#%d:%s",
+		WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
+	(void) setenv("TERMCAP", buf, 1);
+	(void) sprintf(buf, "%d", wp->ww_id + 1);
+	(void) setenv("WINDOW_ID", buf, 1);
+	return 0;
+bad:
+	wwerrno = WWE_SYS;
+	return -1;
+}