1*86d7f5d3SJohn Marino /*
2*86d7f5d3SJohn Marino * Copyright (c) 1995
3*86d7f5d3SJohn Marino * Mark Murray. All rights reserved.
4*86d7f5d3SJohn Marino *
5*86d7f5d3SJohn Marino * Redistribution and use in source and binary forms, with or without
6*86d7f5d3SJohn Marino * modification, are permitted provided that the following conditions
7*86d7f5d3SJohn Marino * are met:
8*86d7f5d3SJohn Marino * 1. Redistributions of source code must retain the above copyright
9*86d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer.
10*86d7f5d3SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright
11*86d7f5d3SJohn Marino * notice, this list of conditions and the following disclaimer in the
12*86d7f5d3SJohn Marino * documentation and/or other materials provided with the distribution.
13*86d7f5d3SJohn Marino *
14*86d7f5d3SJohn Marino * THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND
15*86d7f5d3SJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*86d7f5d3SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*86d7f5d3SJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*86d7f5d3SJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*86d7f5d3SJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*86d7f5d3SJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*86d7f5d3SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*86d7f5d3SJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*86d7f5d3SJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*86d7f5d3SJohn Marino * SUCH DAMAGE.
25*86d7f5d3SJohn Marino *
26*86d7f5d3SJohn Marino * $FreeBSD: src/usr.sbin/rndcontrol/rndcontrol.c,v 1.11.2.1 2000/05/10 02:04:44 obrien Exp $
27*86d7f5d3SJohn Marino * $DragonFly: src/usr.sbin/rndcontrol/rndcontrol.c,v 1.4 2005/12/05 02:40:28 swildner Exp $
28*86d7f5d3SJohn Marino */
29*86d7f5d3SJohn Marino
30*86d7f5d3SJohn Marino #include <sys/random.h>
31*86d7f5d3SJohn Marino #include <err.h>
32*86d7f5d3SJohn Marino #include <stdio.h>
33*86d7f5d3SJohn Marino #include <stdlib.h>
34*86d7f5d3SJohn Marino #include <unistd.h>
35*86d7f5d3SJohn Marino #include <fcntl.h>
36*86d7f5d3SJohn Marino #include <errno.h>
37*86d7f5d3SJohn Marino #include <sys/ioctl.h>
38*86d7f5d3SJohn Marino
39*86d7f5d3SJohn Marino static void
usage(void)40*86d7f5d3SJohn Marino usage(void)
41*86d7f5d3SJohn Marino {
42*86d7f5d3SJohn Marino fprintf(stderr, "usage: rndcontrol [-q] [-s irq_no] [-c irq_no]\n");
43*86d7f5d3SJohn Marino exit(1);
44*86d7f5d3SJohn Marino }
45*86d7f5d3SJohn Marino
46*86d7f5d3SJohn Marino int
main(int argc,char * argv[])47*86d7f5d3SJohn Marino main(int argc, char *argv[])
48*86d7f5d3SJohn Marino {
49*86d7f5d3SJohn Marino int verbose, ch, fd, result, i;
50*86d7f5d3SJohn Marino u_int16_t irq;
51*86d7f5d3SJohn Marino
52*86d7f5d3SJohn Marino verbose = 1;
53*86d7f5d3SJohn Marino
54*86d7f5d3SJohn Marino fd = open("/dev/random", O_RDONLY, 0);
55*86d7f5d3SJohn Marino if (fd == -1) {
56*86d7f5d3SJohn Marino warn("/dev/random");
57*86d7f5d3SJohn Marino return (1);
58*86d7f5d3SJohn Marino }
59*86d7f5d3SJohn Marino else {
60*86d7f5d3SJohn Marino while ((ch = getopt(argc, argv, "qs:c:")) != -1)
61*86d7f5d3SJohn Marino switch (ch) {
62*86d7f5d3SJohn Marino case 'q':
63*86d7f5d3SJohn Marino verbose = 0;
64*86d7f5d3SJohn Marino break;
65*86d7f5d3SJohn Marino case 's':
66*86d7f5d3SJohn Marino irq = (u_int16_t)atoi(optarg);
67*86d7f5d3SJohn Marino if (verbose)
68*86d7f5d3SJohn Marino printf("%s: setting irq %d\n", argv[0], irq);
69*86d7f5d3SJohn Marino result = ioctl(fd, MEM_SETIRQ, (char *)&irq);
70*86d7f5d3SJohn Marino if (result == -1) {
71*86d7f5d3SJohn Marino warn("%s", argv[0]);
72*86d7f5d3SJohn Marino return (1);
73*86d7f5d3SJohn Marino }
74*86d7f5d3SJohn Marino break;
75*86d7f5d3SJohn Marino case 'c':
76*86d7f5d3SJohn Marino irq = (u_int16_t)atoi(optarg);
77*86d7f5d3SJohn Marino if (verbose)
78*86d7f5d3SJohn Marino printf("%s: clearing irq %d\n", argv[0], irq);
79*86d7f5d3SJohn Marino result = ioctl(fd, MEM_CLEARIRQ, (char *)&irq);
80*86d7f5d3SJohn Marino if (result == -1) {
81*86d7f5d3SJohn Marino warn("%s", argv[0]);
82*86d7f5d3SJohn Marino return (1);
83*86d7f5d3SJohn Marino }
84*86d7f5d3SJohn Marino break;
85*86d7f5d3SJohn Marino case '?':
86*86d7f5d3SJohn Marino default:
87*86d7f5d3SJohn Marino usage();
88*86d7f5d3SJohn Marino }
89*86d7f5d3SJohn Marino }
90*86d7f5d3SJohn Marino if (verbose) {
91*86d7f5d3SJohn Marino printf("%s: interrupts in use:", argv[0]);
92*86d7f5d3SJohn Marino irq = 0;
93*86d7f5d3SJohn Marino for (;;) {
94*86d7f5d3SJohn Marino result = ioctl(fd, MEM_FINDIRQ, (char *)&irq);
95*86d7f5d3SJohn Marino if (result < 0)
96*86d7f5d3SJohn Marino break;
97*86d7f5d3SJohn Marino printf(" %d", irq);
98*86d7f5d3SJohn Marino ++irq;
99*86d7f5d3SJohn Marino }
100*86d7f5d3SJohn Marino if (result < 0 && errno == ENOTSUP) {
101*86d7f5d3SJohn Marino printf(" unknown");
102*86d7f5d3SJohn Marino }
103*86d7f5d3SJohn Marino printf("\n");
104*86d7f5d3SJohn Marino }
105*86d7f5d3SJohn Marino argc -= optind;
106*86d7f5d3SJohn Marino argv += optind;
107*86d7f5d3SJohn Marino
108*86d7f5d3SJohn Marino if (argc) {
109*86d7f5d3SJohn Marino fprintf(stderr, "%s: unknown argument(s): ", argv[-optind]);
110*86d7f5d3SJohn Marino for (i = 0; i < argc; i++)
111*86d7f5d3SJohn Marino fprintf(stderr, " %s", argv[i]);
112*86d7f5d3SJohn Marino fprintf(stderr, "\n");
113*86d7f5d3SJohn Marino }
114*86d7f5d3SJohn Marino
115*86d7f5d3SJohn Marino return 0;
116*86d7f5d3SJohn Marino }
117