BSD 4_4 release

[unix-history] / usr / src / usr.bin / window / wwenviron.c

diff --git a/usr/src/usr.bin/window/wwenviron.c b/usr/src/usr.bin/window/wwenviron.c
index 8574682..2b5d82c 100644 (file)
--- a/usr/src/usr.bin/window/wwenviron.c
+++ b/usr/src/usr.bin/window/wwenviron.c
@@ -1,8 +1,47 @@
+/*
+ * 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
 #ifndef lint

-static char sccsid[] = "@(#)wwenviron.c        3.12 %G%";
-#endif
+static char sccsid[] = "@(#)wwenviron.c        8.1 (Berkeley) 6/6/93";
+#endif /* not lint */

 
 #include "ww.h"
 
 #include "ww.h"

+#if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY)
+#include <sys/ioctl.h>
+#endif

 #include <sys/signal.h>
 
 /*
 #include <sys/signal.h>
 
 /*


@@ -12,29 +51,50 @@ wwenviron(wp)
 register struct ww *wp;
 {
        register i;
 register struct ww *wp;
 {
        register i;

+#ifndef TIOCSCTTY

        int pgrp = getpid();
        int pgrp = getpid();

+#endif
+       char buf[1024];

 
 

+#ifndef TIOCSCTTY

        if ((i = open("/dev/tty", 0)) < 0)
                goto bad;
        if ((i = open("/dev/tty", 0)) < 0)
                goto bad;

-       if (ioctl(i, (int)TIOCNOTTY, (char *)0) < 0)
+       if (ioctl(i, TIOCNOTTY, (char *)0) < 0)

                goto bad;
        (void) close(i);
                goto bad;
        (void) close(i);

-       if ((i = wp->ww_socket) < 0 && (i = open(wp->ww_ttyname, 2)) < 0)
-               goto bad;
+#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) dup2(i, 0);
        (void) dup2(i, 1);
        (void) dup2(i, 2);

-       for (i = wwdtablesize - 1; i > 2; i--)
-               (void) close(i);
-       (void) ioctl(0, (int)TIOCSPGRP, (char *)&pgrp);
+       (void) close(i);
+#ifdef TIOCSCTTY
+       (void) setsid();
+       (void) ioctl(0, TIOCSCTTY, 0);
+#else
+       (void) ioctl(0, TIOCSPGRP, (char *)&pgrp);

        (void) setpgrp(pgrp, pgrp);
        (void) setpgrp(pgrp, pgrp);

+#endif
+       /* SIGPIPE is the only one we ignore */

        (void) signal(SIGPIPE, SIG_DFL);
        (void) signal(SIGPIPE, SIG_DFL);

-       (void) sprintf(wwwintermcap, "TERMCAP=%sco#%d:li#%d:%s%s%s%s",
-               WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr,
-               wwavailmodes & WWM_REV ? WWT_REV : "",
-               wwavailmodes & WWM_UL ? WWT_UL : "",
-               wwavailmodes & WWM_GRP ? WWT_GRP : "",
-               wwkeys);
+       (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 0;
 bad:
        wwerrno = WWE_SYS;