1 /* 2 * Copyright (c) 1994 Geoffrey M. Rehmet 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Geoffrey M. Rehmet 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <dev/ppbus/lptio.h> 35 36 #include <err.h> 37 #include <fcntl.h> 38 #include <unistd.h> 39 40 #include <stdio.h> 41 #include <stdlib.h> 42 43 #define DEFAULT_DEVICE "/dev/lpt0.ctl" 44 #define IRQ_UNSPECIFIED -1 45 #define DO_POLL 0 46 #define USE_IRQ 1 47 #define USE_EXT_MODE 2 48 #define USE_STD_MODE 3 49 50 static void usage(void) 51 { 52 fprintf(stderr, 53 "usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n"); 54 exit(1); 55 } 56 57 int main (int argc, char **argv) 58 { 59 const char *device; 60 int fd; 61 int irq_status; 62 int opt; 63 64 device = DEFAULT_DEVICE; 65 irq_status = IRQ_UNSPECIFIED; 66 while ((opt = getopt(argc, argv, "d:eips")) != -1) 67 switch (opt) { 68 case 'd': 69 device = optarg; 70 break; 71 case 'e': 72 irq_status = USE_EXT_MODE; 73 break; 74 case 'i': 75 irq_status = USE_IRQ; 76 break; 77 case 'p': 78 irq_status = DO_POLL; 79 break; 80 case 's': 81 irq_status = USE_STD_MODE; 82 break; 83 case '?': 84 default: 85 usage(); 86 /* NOTREACHED */ 87 } 88 argc -= optind; 89 argv += optind; 90 /* POLA: DTRT if -d was forgotten, but device name was specified. */ 91 if (argc == 1) { 92 device = argv[0]; 93 --argc; 94 } 95 96 if (irq_status == IRQ_UNSPECIFIED || argc != 0) 97 usage(); 98 99 if ((fd = open(device, O_WRONLY)) < 0) 100 err(1, "open"); 101 if (ioctl(fd, LPT_IRQ, &irq_status) < 0) 102 err(1, "ioctl"); 103 close(fd); 104 105 return(0); 106 } 107