mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* 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 THE AUTHOR 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#include <machine/random.h>
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
fprintf(stderr, "usage: rndcontrol [-q] [-s irq_no] [-c irq_no]\n");
|
|
exit(1);
|
|
}
|
|
|
|
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) {
|
|
warn("/dev/random");
|
|
return (1);
|
|
}
|
|
else {
|
|
while ((ch = getopt(argc, argv, "qs:c:")) != -1)
|
|
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) {
|
|
warn("%s", 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) {
|
|
warn("%s", argv[0]);
|
|
return (1);
|
|
}
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
if (verbose) {
|
|
result = ioctl(fd, MEM_RETURNIRQ, (char *)&irq);
|
|
if (result == -1) {
|
|
warn("%s", 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;
|
|
}
|