1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1994 Geoffrey M. Rehmet
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Geoffrey M. Rehmet
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34#include <dev/ppbus/lptio.h>
35
36#include <err.h>
37#include <fcntl.h>
38#include <unistd.h>
39
40#include <stdio.h>
41#include <stdlib.h>
42
43#define DEFAULT_DEVICE	"/dev/lpt0.ctl"
44#define IRQ_UNSPECIFIED	-1
45#define DO_POLL		0
46#define USE_IRQ		1
47#define USE_EXT_MODE	2
48#define USE_STD_MODE	3
49
50static void usage(void)
51{
52	fprintf(stderr,
53		"usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n");
54	exit(1);
55}
56
57int main (int argc, char **argv)
58{
59	const char *device;
60	int fd;
61	int irq_status;
62	int opt;
63
64	device = DEFAULT_DEVICE;
65	irq_status = IRQ_UNSPECIFIED;
66	while ((opt = getopt(argc, argv, "d:eips")) != -1)
67		switch (opt) {
68		case 'd':
69			device = optarg;
70			break;
71		case 'e':
72			irq_status = USE_EXT_MODE;
73			break;
74		case 'i':
75			irq_status = USE_IRQ;
76			break;
77		case 'p':
78			irq_status = DO_POLL;
79			break;
80		case 's':
81			irq_status = USE_STD_MODE;
82			break;
83		case '?':
84		default:
85			usage();
86			/* NOTREACHED */
87		}
88	argc -= optind;
89	argv += optind;
90	/* POLA: DTRT if -d was forgotten, but device name was specified. */
91	if (argc == 1) {
92		device = argv[0];
93		--argc;
94	}
95
96	if (irq_status == IRQ_UNSPECIFIED || argc != 0)
97		usage();
98
99	if ((fd = open(device, O_WRONLY)) < 0)
100		err(1, "open");
101	if (ioctl(fd, LPT_IRQ, &irq_status) < 0)
102		err(1, "ioctl");
103	close(fd);
104
105	return(0);
106}
107