diff options
Diffstat (limited to 'usr.bin/window/wwenviron.c')
| -rw-r--r-- | usr.bin/window/wwenviron.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/usr.bin/window/wwenviron.c b/usr.bin/window/wwenviron.c new file mode 100644 index 0000000..2b5d82c --- /dev/null +++ b/usr.bin/window/wwenviron.c @@ -0,0 +1,102 @@ +/* + * 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 +static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93"; +#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; +} |
