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/*
* Copyright (c) 1994 Geoffrey M. Rehmet
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Geoffrey M. Rehmet
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/ppbus/lptio.h>
#include <err.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#define DEFAULT_DEVICE "/dev/lpt0.ctl"
#define IRQ_UNSPECIFIED -1
#define DO_POLL 0
#define USE_IRQ 1
#define USE_EXT_MODE 2
#define USE_STD_MODE 3
static void usage(void)
{
fprintf(stderr,
"usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n");
exit(1);
}
int main (int argc, char **argv)
{
const char *device;
int fd;
int irq_status;
int opt;
device = DEFAULT_DEVICE;
irq_status = IRQ_UNSPECIFIED;
while ((opt = getopt(argc, argv, "d:eips")) != -1)
switch (opt) {
case 'd':
device = optarg;
break;
case 'e':
irq_status = USE_EXT_MODE;
break;
case 'i':
irq_status = USE_IRQ;
break;
case 'p':
irq_status = DO_POLL;
break;
case 's':
irq_status = USE_STD_MODE;
break;
case '?':
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
/* POLA: DTRT if -d was forgotten, but device name was specified. */
if (argc == 1) {
device = argv[0];
--argc;
}
if (irq_status == IRQ_UNSPECIFIED || argc != 0)
usage();
if ((fd = open(device, O_WRONLY)) < 0)
err(1, "open");
if (ioctl(fd, LPT_IRQ, &irq_status) < 0)
err(1, "ioctl");
close(fd);
return(0);
}
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