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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 withough 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.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <ctype.h>
#include <err.h>
#include <limits.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dev/ppbus/lptio.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#define PATH_LPCTL _PATH_DEV "lpctl"
#define DEFAULT_DEVICE _PATH_DEV "lpt0"
#define IRQ_INVALID -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 -i | -p | -s | -e [-d device]\n");
exit(1);
}
static void set_interrupt_status(int irq_status, const char * file)
{
int fd;
if((fd = open(file, O_WRONLY, 0660)) < 0)
err(1, "open");
if(ioctl(fd, LPT_IRQ, &irq_status) < 0)
err(1, "ioctl");
close(fd);
}
int main (int argc, char * argv[])
{
int opt;
int irq_status = IRQ_INVALID;
const char *device = DEFAULT_DEVICE;
while((opt = getopt(argc, argv, "ipesd:")) != -1)
switch(opt) {
case 'i': irq_status = USE_IRQ; break;
case 'p': irq_status = DO_POLL; break;
case 'e': irq_status = USE_EXT_MODE; break;
case 's': irq_status = USE_STD_MODE; break;
case 'd': device = optarg; break;
default : usage();
}
if(irq_status == IRQ_INVALID)
usage();
set_interrupt_status(irq_status, device);
exit(0);
}
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