/* $NetBSD: wwenviron.c,v 1.5 1997/11/21 08:37:18 lukem 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. */ #include <sys/cdefs.h> #ifndef lint #if 0 static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93"; #else __RCSID("$NetBSD: wwenviron.c,v 1.5 1997/11/21 08:37:18 lukem Exp $"); #endif #endif /* not lint */ #include <sys/types.h> #if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY) #include <sys/ioctl.h> #endif #include <fcntl.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "ww.h" /* * Set up the environment of this process to run in window 'wp'. */ int wwenviron(wp) struct ww *wp; { int i; #ifndef TIOCSCTTY int pgrp = getpid(); #endif char buf[1024]; sigset_t sigset; #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); sigemptyset(&sigset); sigprocmask(SIG_SETMASK, &sigset, (sigset_t *)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; }