1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1994 Geoffrey M. Rehmet 5 * All rights reserved. 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 Geoffrey M. Rehmet 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <dev/ppbus/lptio.h> 37 38 #include <err.h> 39 #include <fcntl.h> 40 #include <unistd.h> 41 42 #include <stdio.h> 43 #include <stdlib.h> 44 45 #define DEFAULT_DEVICE "/dev/lpt0.ctl" 46 #define IRQ_UNSPECIFIED -1 47 #define DO_POLL 0 48 #define USE_IRQ 1 49 #define USE_EXT_MODE 2 50 #define USE_STD_MODE 3 51 52 static void usage(void) 53 { 54 fprintf(stderr, 55 "usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n"); 56 exit(1); 57 } 58 59 int main (int argc, char **argv) 60 { 61 const char *device; 62 int fd; 63 int irq_status; 64 int opt; 65 66 device = DEFAULT_DEVICE; 67 irq_status = IRQ_UNSPECIFIED; 68 while ((opt = getopt(argc, argv, "d:eips")) != -1) 69 switch (opt) { 70 case 'd': 71 device = optarg; 72 break; 73 case 'e': 74 irq_status = USE_EXT_MODE; 75 break; 76 case 'i': 77 irq_status = USE_IRQ; 78 break; 79 case 'p': 80 irq_status = DO_POLL; 81 break; 82 case 's': 83 irq_status = USE_STD_MODE; 84 break; 85 case '?': 86 default: 87 usage(); 88 /* NOTREACHED */ 89 } 90 argc -= optind; 91 argv += optind; 92 /* POLA: DTRT if -d was forgotten, but device name was specified. */ 93 if (argc == 1) { 94 device = argv[0]; 95 --argc; 96 } 97 98 if (irq_status == IRQ_UNSPECIFIED || argc != 0) 99 usage(); 100 101 if ((fd = open(device, O_WRONLY)) < 0) 102 err(1, "open"); 103 if (ioctl(fd, LPT_IRQ, &irq_status) < 0) 104 err(1, "ioctl"); 105 close(fd); 106 107 return(0); 108 } 109