lptcontrol.c revision 43993
167754Smsmith/* 267754Smsmith * Copyright (c) 1994 Geoffrey M. Rehmet 377424Smsmith * All rights reserved. 4104470Siwasaki * 567754Smsmith * Redistribution and use in source and binary forms, with or without 667754Smsmith * modification, are permitted provided that the following conditions 767754Smsmith * are met: 867754Smsmith * 1. Redistributions of source code must retain the above copyright 967754Smsmith * notice, this list of conditions and the following disclaimer. 1067754Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1167754Smsmith * notice, this list of conditions and the following disclaimer in the 1291116Smsmith * documentation and/or other materials provided with the distribution. 1370243Smsmith * 3. All advertising materials mentioning features or use of this software 1467754Smsmith * must display the following acknowledgement: 1567754Smsmith * This product includes software developed by Geoffrey M. Rehmet 1667754Smsmith * 4. The name of the author may not be used to endorse or promote products 1767754Smsmith * derived from this software withough specific prior written permission 1867754Smsmith * 1967754Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 2067754Smsmith * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2167754Smsmith * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2267754Smsmith * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2367754Smsmith * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2467754Smsmith * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2567754Smsmith * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2667754Smsmith * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2767754Smsmith * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2867754Smsmith * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2967754Smsmith */ 3067754Smsmith 3167754Smsmith#ifndef lint 3267754Smsmithstatic const char rcsid[] = 3367754Smsmith "$Id: lptcontrol.c,v 1.7 1999/01/10 12:04:56 nsouch Exp $"; 3467754Smsmith#endif /* not lint */ 3567754Smsmith 3667754Smsmith#include <ctype.h> 3767754Smsmith#include <err.h> 3867754Smsmith#include <limits.h> 3967754Smsmith#include <paths.h> 4067754Smsmith#include <stdio.h> 4167754Smsmith#include <stdlib.h> 4267754Smsmith#include <string.h> 4367754Smsmith#include <unistd.h> 4467754Smsmith 4567754Smsmith#include <machine/lpt.h> 4667754Smsmith#include <sys/file.h> 4767754Smsmith#include <sys/ioctl.h> 4867754Smsmith#include <sys/types.h> 4967754Smsmith 5067754Smsmith 5167754Smsmith#define PATH_LPCTL _PATH_DEV "lpctl" 5267754Smsmith#define DEFAULT_DEVICE "/dev/lpt0" 5367754Smsmith#define IRQ_INVALID -1 5467754Smsmith#define DO_POLL 0 5567754Smsmith#define USE_IRQ 1 5667754Smsmith#define USE_EXT_MODE 2 5767754Smsmith#define USE_STD_MODE 3 5867754Smsmith 5967754Smsmithstatic void usage() 6067754Smsmith{ 6167754Smsmith fprintf(stderr, "usage: lptcontrol -i | -p | -s | -e [-d device]\n"); 6267754Smsmith exit(1); 6367754Smsmith} 6467754Smsmith 6567754Smsmithstatic void set_interrupt_status(int irq_status, const char * file) 6667754Smsmith{ 6767754Smsmith int fd; 6867754Smsmith 6967754Smsmith if((fd = open(file, O_WRONLY, 0660)) < 0) 7067754Smsmith err(1, "open"); 7167754Smsmith if(ioctl(fd, LPT_IRQ, &irq_status) < 0) 7267754Smsmith err(1, "ioctl"); 7367754Smsmith close(fd); 7467754Smsmith} 7567754Smsmith 7667754Smsmithint main (int argc, char * argv[]) 7767754Smsmith{ 7867754Smsmith int opt; 7967754Smsmith int irq_status = IRQ_INVALID; 8067754Smsmith char *device = DEFAULT_DEVICE; 8167754Smsmith 8267754Smsmith while((opt = getopt(argc, argv, "ipesd:")) != -1) 8367754Smsmith switch(opt) { 8467754Smsmith case 'i': irq_status = USE_IRQ; break; 8567754Smsmith case 'p': irq_status = DO_POLL; break; 8667754Smsmith case 'e': irq_status = USE_EXT_MODE; break; 8767754Smsmith case 's': irq_status = USE_STD_MODE; break; 8867754Smsmith case 'd': device = optarg; break; 8967754Smsmith default : usage(); 9067754Smsmith } 9167754Smsmith if(irq_status == IRQ_INVALID) 9267754Smsmith usage(); 9367754Smsmith 9467754Smsmith set_interrupt_status(irq_status, device); 9567754Smsmith 9667754Smsmith exit(0); 9767754Smsmith} 9867754Smsmith