Return to wwpty.c CVS log

Up to [CSRG BSD Unix] / 43BSDReno / usr.bin / window

Annotation of 43BSDReno/usr.bin/window/wwpty.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Edward Wang at The University of California, Berkeley.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #ifndef lint
                     24: static char sccsid[] = "@(#)wwpty.c    3.18 (Berkeley) 6/6/90";
                     25: #endif /* not lint */
                     26: 
                     27: #include "ww.h"
                     28: #ifdef POSIX_TTY
                     29: #include <sys/ioctl.h>
                     30: #endif
                     31: 
                     32: wwgetpty(w)
                     33: register struct ww *w;
                     34: {
                     35:        register char c, *p;
                     36:        int tty;
                     37:        int on = 1;
                     38: #define PTY "/dev/XtyXX"
                     39: #define _PT    5
                     40: #define _PQRS  8
                     41: #define _0_9   9
                     42: 
                     43:        (void) strcpy(w->ww_ttyname, PTY);
                     44:        for (c = 'p'; c <= 'u'; c++) {
                     45:                w->ww_ttyname[_PT] = 'p';
                     46:                w->ww_ttyname[_PQRS] = c;
                     47:                w->ww_ttyname[_0_9] = '0';
                     48:                if (access(w->ww_ttyname, 0) < 0)
                     49:                        break;
                     50:                for (p = "0123456789abcdef"; *p; p++) {
                     51:                        w->ww_ttyname[_PT] = 'p';
                     52:                        w->ww_ttyname[_0_9] = *p;
                     53:                        if ((w->ww_pty = open(w->ww_ttyname, 2)) < 0)
                     54:                                continue;
                     55:                        w->ww_ttyname[_PT] = 't';
                     56:                        if ((tty = open(w->ww_ttyname, 2)) < 0) {
                     57:                                (void) close(w->ww_pty);
                     58:                                continue;
                     59:                        }
                     60:                        (void) close(tty);
                     61:                        if (ioctl(w->ww_pty, TIOCPKT, (char *)&on) < 0) {
                     62:                                (void) close(w->ww_pty);
                     63:                                continue;
                     64:                        }
                     65:                        return 0;
                     66:                }
                     67:        }
                     68:        w->ww_pty = -1;
                     69:        wwerrno = WWE_NOPTY;
                     70:        return -1;
                     71: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.