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- /*
- * Copyright (c) 1983 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
- static char sccsid[] = "@(#)wwenviron.c 3.27 (Berkeley) 8/12/90";
- #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);
- for (i = wwdtablesize - 1; i > 2; i--)
- (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;
- }
-