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Annotation of src/lib/libc/gen/ttyslot.c, Revision 1.7

1.7     ! jtc         1: /*     $NetBSD: ttyslot.c,v 1.6 1997/07/13 19:36:01 christos Exp $     */
1.5       cgd         2:
1.1       cgd         3: /*
1.5       cgd         4:  * Copyright (c) 1988, 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
1.1       cgd         6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by the University of
                     18:  *     California, Berkeley and its contributors.
                     19:  * 4. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
1.6       christos   36: #include <sys/cdefs.h>
1.1       cgd        37: #if defined(LIBC_SCCS) && !defined(lint)
1.5       cgd        38: #if 0
                     39: static char sccsid[] = "@(#)ttyslot.c  8.1 (Berkeley) 6/4/93";
                     40: #else
1.7     ! jtc        41: __RCSID("$NetBSD: ttyslot.c,v 1.6 1997/07/13 19:36:01 christos Exp $");
1.5       cgd        42: #endif
1.1       cgd        43: #endif /* LIBC_SCCS and not lint */
                     44:
1.7     ! jtc        45: #include "namespace.h"
1.1       cgd        46: #include <ttyent.h>
                     47: #include <stdio.h>
                     48: #include <string.h>
                     49: #include <unistd.h>
1.7     ! jtc        50:
        !            51: #ifdef __weak_alias
        !            52: __weak_alias(ttyslot,_ttyslot);
        !            53: #endif
1.1       cgd        54:
                     55: int
                     56: ttyslot()
                     57: {
                     58:        register struct ttyent *ttyp;
                     59:        register int slot;
                     60:        register char *p;
                     61:        int cnt;
                     62:        char *name;
                     63:
                     64:        setttyent();
                     65:        for (cnt = 0; cnt < 3; ++cnt)
1.6       christos   66:                if ((name = ttyname(cnt)) != NULL) {
                     67:                        if ((p = strrchr(name, '/')) != NULL)
1.1       cgd        68:                                ++p;
                     69:                        else
                     70:                                p = name;
1.6       christos   71:                        for (slot = 1; (ttyp = getttyent()) != NULL; ++slot)
1.1       cgd        72:                                if (!strcmp(ttyp->ty_name, p)) {
                     73:                                        endttyent();
                     74:                                        return(slot);
                     75:                                }
                     76:                        break;
                     77:                }
                     78:        endttyent();
                     79:        return(0);
                     80: }