ttyslot.c revision 202274
11573Srgrimes/* 21573Srgrimes * Copyright (c) 1988, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 131573Srgrimes * 4. Neither the name of the University nor the names of its contributors 141573Srgrimes * may be used to endorse or promote products derived from this software 151573Srgrimes * without specific prior written permission. 161573Srgrimes * 171573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271573Srgrimes * SUCH DAMAGE. 281573Srgrimes */ 291573Srgrimes 301573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 311573Srgrimesstatic char sccsid[] = "@(#)ttyslot.c 8.1 (Berkeley) 6/4/93"; 321573Srgrimes#endif /* LIBC_SCCS and not lint */ 3390041Sobrien#include <sys/cdefs.h> 3490041Sobrien__FBSDID("$FreeBSD: head/lib/libc/gen/ttyslot.c 202274 2010-01-14 05:35:32Z ed $"); 351573Srgrimes 36188534Sed#include <paths.h> 371573Srgrimes#include <ttyent.h> 381573Srgrimes#include <stdio.h> 391573Srgrimes#include <string.h> 401573Srgrimes#include <unistd.h> 411573Srgrimes 421573Srgrimesint 43202274Sed__ttyslot(void) 441573Srgrimes{ 4590041Sobrien struct ttyent *ttyp; 4690041Sobrien int slot; 471573Srgrimes int cnt; 481573Srgrimes char *name; 491573Srgrimes 501573Srgrimes setttyent(); 518870Srgrimes for (cnt = 0; cnt < 3; ++cnt) 5217141Sjkh if ( (name = ttyname(cnt)) ) { 53188534Sed if (strncmp(name, _PATH_DEV, sizeof _PATH_DEV - 1) != 0) 54188534Sed break; 55188534Sed name += sizeof _PATH_DEV - 1; 5617141Sjkh for (slot = 1; (ttyp = getttyent()); ++slot) 57188534Sed if (!strcmp(ttyp->ty_name, name)) { 581573Srgrimes endttyent(); 591573Srgrimes return(slot); 601573Srgrimes } 611573Srgrimes break; 621573Srgrimes } 631573Srgrimes endttyent(); 641573Srgrimes return(0); 651573Srgrimes} 66202274Sed 67202274Sed__sym_compat(ttyslot, __ttyslot, FBSD_1.0); 68