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 __FBSDID("$FreeBSD$");
35
36 #include <dev/ppbus/lptio.h>
37
38 #include <err.h>
39 #include <fcntl.h>
40 #include <unistd.h>
41
42 #include <stdio.h>
43 #include <stdlib.h>
44
45 #define DEFAULT_DEVICE "/dev/lpt0.ctl"
46 #define IRQ_UNSPECIFIED -1
47 #define DO_POLL 0
48 #define USE_IRQ 1
49 #define USE_EXT_MODE 2
50 #define USE_STD_MODE 3
51
usage(void)52 static void usage(void)
53 {
54 fprintf(stderr,
55 "usage: lptcontrol -e | -i | -p | -s [[-d] controldevice]\n");
56 exit(1);
57 }
58
main(int argc,char ** argv)59 int main (int argc, char **argv)
60 {
61 const char *device;
62 int fd;
63 int irq_status;
64 int opt;
65
66 device = DEFAULT_DEVICE;
67 irq_status = IRQ_UNSPECIFIED;
68 while ((opt = getopt(argc, argv, "d:eips")) != -1)
69 switch (opt) {
70 case 'd':
71 device = optarg;
72 break;
73 case 'e':
74 irq_status = USE_EXT_MODE;
75 break;
76 case 'i':
77 irq_status = USE_IRQ;
78 break;
79 case 'p':
80 irq_status = DO_POLL;
81 break;
82 case 's':
83 irq_status = USE_STD_MODE;
84 break;
85 case '?':
86 default:
87 usage();
88 /* NOTREACHED */
89 }
90 argc -= optind;
91 argv += optind;
92 /* POLA: DTRT if -d was forgotten, but device name was specified. */
93 if (argc == 1) {
94 device = argv[0];
95 --argc;
96 }
97
98 if (irq_status == IRQ_UNSPECIFIED || argc != 0)
99 usage();
100
101 if ((fd = open(device, O_WRONLY)) < 0)
102 err(1, "open");
103 if (ioctl(fd, LPT_IRQ, &irq_status) < 0)
104 err(1, "ioctl");
105 close(fd);
106
107 return(0);
108 }
109