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 withough 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 #ifndef lint 32 static const char rcsid[] = 33 "$FreeBSD: src/usr.sbin/lptcontrol/lptcontrol.c,v 1.9.2.2 2001/07/30 10:22:57 dd Exp $"; 34 #endif /* not lint */ 35 36 #include <ctype.h> 37 #include <err.h> 38 #include <limits.h> 39 #include <paths.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <unistd.h> 44 45 #include <dev/ppbus/lptio.h> 46 #include <sys/file.h> 47 #include <sys/ioctl.h> 48 #include <sys/types.h> 49 50 51 #define PATH_LPCTL _PATH_DEV "lpctl" 52 #define DEFAULT_DEVICE "/dev/lpt0" 53 #define IRQ_INVALID -1 54 #define DO_POLL 0 55 #define USE_IRQ 1 56 #define USE_EXT_MODE 2 57 #define USE_STD_MODE 3 58 59 static void usage(void) 60 { 61 fprintf(stderr, "usage: lptcontrol -i | -p | -s | -e [-d device]\n"); 62 exit(1); 63 } 64 65 static void set_interrupt_status(int irq_status, const char * file) 66 { 67 int fd; 68 69 if((fd = open(file, O_WRONLY, 0660)) < 0) 70 err(1, "open"); 71 if(ioctl(fd, LPT_IRQ, &irq_status) < 0) 72 err(1, "ioctl"); 73 close(fd); 74 } 75 76 int main (int argc, char * argv[]) 77 { 78 int opt; 79 int irq_status = IRQ_INVALID; 80 const char *device = DEFAULT_DEVICE; 81 82 while((opt = getopt(argc, argv, "ipesd:")) != -1) 83 switch(opt) { 84 case 'i': irq_status = USE_IRQ; break; 85 case 'p': irq_status = DO_POLL; break; 86 case 'e': irq_status = USE_EXT_MODE; break; 87 case 's': irq_status = USE_STD_MODE; break; 88 case 'd': device = optarg; break; 89 default : usage(); 90 } 91 if(irq_status == IRQ_INVALID) 92 usage(); 93 94 set_interrupt_status(irq_status, device); 95 96 exit(0); 97 } 98