1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/stat.h> 28 #include <fcntl.h> 29 #include <unistd.h> 30 #include <stropts.h> 31 #include <sys/vt.h> 32 33 /* 34 * return value: 35 * 0: disabled 36 * 1: enabled 37 * 2: An error occured 38 */ 39 int 40 main(void) 41 { 42 int result; 43 int fd; 44 45 if ((fd = open("/dev/vt/0", O_RDONLY)) < 0) 46 return (2); 47 48 if (ioctl(fd, VT_ENABLED, &result) != 0) { 49 (void) close(fd); 50 return (2); 51 } 52 53 (void) close(fd); 54 55 if (result == 0) 56 return (0); /* disabled */ 57 58 return (1); /* enabled */ 59 } 60