ttyslot.c revision 202274
1177997Skib/* 2177997Skib * Copyright (c) 1988, 1993 3177997Skib * The Regents of the University of California. All rights reserved. 4177997Skib * 5177997Skib * Redistribution and use in source and binary forms, with or without 6177997Skib * modification, are permitted provided that the following conditions 7177997Skib * are met: 8177997Skib * 1. Redistributions of source code must retain the above copyright 9177997Skib * notice, this list of conditions and the following disclaimer. 10177997Skib * 2. Redistributions in binary form must reproduce the above copyright 11177997Skib * notice, this list of conditions and the following disclaimer in the 12177997Skib * documentation and/or other materials provided with the distribution. 13177997Skib * 4. Neither the name of the University nor the names of its contributors 14177997Skib * may be used to endorse or promote products derived from this software 15177997Skib * without specific prior written permission. 16177997Skib * 17177997Skib * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18177997Skib * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19177997Skib * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20177997Skib * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21177997Skib * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22177997Skib * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23177997Skib * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24177997Skib * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25177997Skib * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26177997Skib * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27177997Skib * SUCH DAMAGE. 28177997Skib */ 29177997Skib 30177997Skib#if defined(LIBC_SCCS) && !defined(lint) 31177997Skibstatic char sccsid[] = "@(#)ttyslot.c 8.1 (Berkeley) 6/4/93"; 32177997Skib#endif /* LIBC_SCCS and not lint */ 33177997Skib#include <sys/cdefs.h> 34227693Sed__FBSDID("$FreeBSD: head/lib/libc/gen/ttyslot.c 202274 2010-01-14 05:35:32Z ed $"); 35177997Skib 36227693Sed#include <paths.h> 37177997Skib#include <ttyent.h> 38246085Sjhb#include <stdio.h> 39246085Sjhb#include <string.h> 40246085Sjhb#include <unistd.h> 41246085Sjhb 42246085Sjhbint 43246085Sjhb__ttyslot(void) 44246085Sjhb{ 45246085Sjhb struct ttyent *ttyp; 46246085Sjhb int slot; 47246085Sjhb int cnt; 48246085Sjhb char *name; 49246085Sjhb 50246085Sjhb setttyent(); 51246085Sjhb for (cnt = 0; cnt < 3; ++cnt) 52246085Sjhb if ( (name = ttyname(cnt)) ) { 53246085Sjhb if (strncmp(name, _PATH_DEV, sizeof _PATH_DEV - 1) != 0) 54246085Sjhb break; 55246085Sjhb name += sizeof _PATH_DEV - 1; 56246085Sjhb for (slot = 1; (ttyp = getttyent()); ++slot) 57293541Sdchagin if (!strcmp(ttyp->ty_name, name)) { 58293541Sdchagin endttyent(); 59293541Sdchagin return(slot); 60293541Sdchagin } 61293541Sdchagin break; 62293541Sdchagin } 63293541Sdchagin endttyent(); 64293541Sdchagin return(0); 65293541Sdchagin} 66293541Sdchagin 67293541Sdchagin__sym_compat(ttyslot, __ttyslot, FBSD_1.0); 68293541Sdchagin