103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Edward Wang at The University of California, Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include "ww.h"
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#if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY)
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#include <sys/ioctl.h>
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#endif
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#include <sys/signal.h>
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/*
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* Set up the environment of this process to run in window 'wp'.
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*/
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wwenviron(wp)
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register struct ww *wp;
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{
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register i;
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#ifndef TIOCSCTTY
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int pgrp = getpid();
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#endif
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char buf[1024];
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#ifndef TIOCSCTTY
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if ((i = open("/dev/tty", 0)) < 0)
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goto bad;
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if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
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goto bad;
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(void) close(i);
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#endif
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if ((i = wp->ww_socket) < 0) {
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if ((i = open(wp->ww_ttyname, 2)) < 0)
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goto bad;
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if (wwsettty(i, &wwwintty) < 0)
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goto bad;
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if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
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goto bad;
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}
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(void) dup2(i, 0);
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(void) dup2(i, 1);
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(void) dup2(i, 2);
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(void) close(i);
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#ifdef TIOCSCTTY
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(void) setsid();
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(void) ioctl(0, TIOCSCTTY, 0);
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#else
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(void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
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(void) setpgrp(pgrp, pgrp);
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#endif
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/* SIGPIPE is the only one we ignore */
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(void) signal(SIGPIPE, SIG_DFL);
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(void) sigsetmask(0);
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/*
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* Two conditions that make destructive setenv ok:
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* 1. setenv() copies the string,
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* 2. we've already called tgetent which copies the termcap entry.
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*/
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(void) sprintf(buf, "%sco#%d:li#%d:%s",
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WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
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(void) setenv("TERMCAP", buf, 1);
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(void) sprintf(buf, "%d", wp->ww_id + 1);
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(void) setenv("WINDOW_ID", buf, 1);
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return 0;
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bad:
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wwerrno = WWE_SYS;
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return -1;
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}
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