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/*
* 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.
*
* $FreeBSD: src/usr.sbin/rndcontrol/rndcontrol.c,v 1.11.2.1 2000/05/10 02:04:44 obrien Exp $
* $DragonFly: src/usr.sbin/rndcontrol/rndcontrol.c,v 1.4 2005/12/05 02:40:28 swildner Exp $
*/
#include <sys/random.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
static void
usage(void)
{
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) {
printf("%s: interrupts in use:", argv[0]);
irq = 0;
for (;;) {
result = ioctl(fd, MEM_FINDIRQ, (char *)&irq);
if (result < 0)
break;
printf(" %d", irq);
++irq;
}
if (result < 0 && errno == ENOTSUP) {
printf(" unknown");
}
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;
}
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