1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Copyright (c) 1995
* Mark Murray. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Murray
* and Theodore Ts'o
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL MARK MURRAY OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: rndcontrol.c,v 1.3 1995/12/27 11:40:47 markm Exp $
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <machine/random.h>
void usage(char *myname)
{
fprintf(stderr, "usage: %s [ [-q ] [-s N | -c M]... ]\n", myname);
}
int
main(int argc, char *argv[])
{
int verbose, ch, fd, result, i;
u_int16_t irq;
verbose = 1;
fd = open("/dev/random", O_RDONLY, 0);
if (fd == -1) {
perror("/dev/random");
return (1);
}
else {
while ((ch = getopt(argc, argv, "qs:c:")) != EOF)
switch (ch) {
case 'q':
verbose = 0;
break;
case 's':
irq = (u_int16_t)atoi(optarg);
if (verbose)
printf("%s: setting irq %d\n", argv[0], irq);
result = ioctl(fd, MEM_SETIRQ, (char *)&irq);
if (result == -1) {
perror(argv[0]);
return (1);
}
break;
case 'c':
irq = (u_int16_t)atoi(optarg);
if (verbose)
printf("%s: clearing irq %d\n", argv[0], irq);
result = ioctl(fd, MEM_CLEARIRQ, (char *)&irq);
if (result == -1) {
perror(argv[0]);
return (1);
}
break;
case '?':
default:
usage(argv[0]);
return (1);
}
}
if (verbose) {
result = ioctl(fd, MEM_RETURNIRQ, (char *)&irq);
if (result == -1) {
perror(argv[0]);
return (1);
}
printf("%s: Interrupts in use:", argv[0]);
for (i = 0; i < 16; i++)
if (irq & (1 << i))
printf(" %d", i);
printf("\n");
}
argc -= optind;
argv += optind;
if (argc) {
fprintf(stderr, "%s: Unknown argument(s):", argv[-optind]);
for (i = 0; i < argc; i++)
fprintf(stderr, " %s", argv[i]);
fprintf(stderr, "\n");
}
return 0;
}
|
