Libc-262.3.2.tar.gz

[apple/libc.git] / gen / ttyslot.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
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/*
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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
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 * 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.
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 *    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
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 */


#include <ttyent.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

int
ttyslot()
{
	register struct ttyent *ttyp;
	register int slot;
	register char *p;
	int cnt;
	char *name;

	setttyent();
	for (cnt = 0; cnt < 3; ++cnt) 
		if (name = ttyname(cnt)) {
			if (p = rindex(name, '/')) 
				++p;
			else
				p = name;
			for (slot = 1; ttyp = getttyent(); ++slot)
				if (!strcmp(ttyp->ty_name, p)) {
					endttyent();
					return(slot);
				}
			break;
		}
	endttyent();
	return(0);
}