7a133f54fc
- Makefile: WARNS=6
- man page: sort options, better xrefs, informative BUGS section
- C source: proper option parsing, use printer control (.ctl) device,
removed heaps of bit rot, style(9) cleanup, WARNS=6 cleanup.
Prodded by: joerg
107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/*
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* Copyright (c) 1994 Geoffrey M. Rehmet
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Geoffrey M. Rehmet
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dev/ppbus/lptio.h>
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#include <err.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define DEFAULT_DEVICE "/dev/lpt0.ctl"
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#define IRQ_UNSPECIFIED -1
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#define DO_POLL 0
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#define USE_IRQ 1
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#define USE_EXT_MODE 2
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#define USE_STD_MODE 3
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static void usage(void)
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{
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fprintf(stderr,
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"usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n");
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exit(1);
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}
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int main (int argc, char **argv)
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{
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const char *device;
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int fd;
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int irq_status;
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int opt;
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device = DEFAULT_DEVICE;
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irq_status = IRQ_UNSPECIFIED;
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while ((opt = getopt(argc, argv, "d:eips")) != -1)
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switch (opt) {
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case 'd':
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device = optarg;
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break;
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case 'e':
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irq_status = USE_EXT_MODE;
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break;
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case 'i':
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irq_status = USE_IRQ;
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break;
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case 'p':
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irq_status = DO_POLL;
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break;
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case 's':
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irq_status = USE_STD_MODE;
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break;
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case '?':
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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/* POLA: DTRT if -d was forgotten, but device name was specified. */
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if (argc == 1) {
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device = argv[0];
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--argc;
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}
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if (irq_status == IRQ_UNSPECIFIED || argc != 0)
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usage();
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if ((fd = open(device, O_WRONLY, 0660)) < 0)
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err(1, "open");
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if (ioctl(fd, LPT_IRQ, &irq_status) < 0)
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err(1, "ioctl");
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close(fd);
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return(0);
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}
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