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
usage(void)50 static void usage(void)
51 {
52 fprintf(stderr,
53 "usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n");
54 exit(1);
55 }
56
main(int argc,char ** argv)57 int 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