115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
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* Copyright (c) 1995
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* Mark Murray. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/ioctl.h>
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#include <sys/random.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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static void
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usage()
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{
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fprintf(stderr, "usage: rndcontrol [-q] [-s irq_no] [-c irq_no]\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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int verbose, ch, fd, result, i;
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u_int16_t irq;
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verbose = 1;
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fd = open("/dev/random", O_RDONLY, 0);
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if (fd == -1) {
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warn("/dev/random");
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return (1);
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}
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else {
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while ((ch = getopt(argc, argv, "qs:c:")) != -1)
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switch (ch) {
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case 'q':
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verbose = 0;
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break;
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case 's':
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irq = (u_int16_t)atoi(optarg);
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if (verbose)
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printf("%s: setting irq %d\n", argv[0], irq);
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result = ioctl(fd, MEM_SETIRQ, (char *)&irq);
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if (result == -1) {
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warn("%s", argv[0]);
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return (1);
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}
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break;
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case 'c':
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irq = (u_int16_t)atoi(optarg);
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if (verbose)
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printf("%s: clearing irq %d\n", argv[0], irq);
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result = ioctl(fd, MEM_CLEARIRQ, (char *)&irq);
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if (result == -1) {
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warn("%s", argv[0]);
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return (1);
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}
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break;
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case '?':
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default:
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usage();
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}
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}
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if (verbose) {
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result = ioctl(fd, MEM_RETURNIRQ, (char *)&irq);
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if (result == -1) {
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warn("%s", argv[0]);
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return (1);
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}
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printf("%s: interrupts in use:", argv[0]);
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for (i = 0; i < 16; i++)
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if (irq & (1 << i))
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printf(" %d", i);
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printf("\n");
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}
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argc -= optind;
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argv += optind;
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if (argc) {
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fprintf(stderr, "%s: unknown argument(s): ", argv[-optind]);
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for (i = 0; i < argc; i++)
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fprintf(stderr, " %s", argv[i]);
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fprintf(stderr, "\n");
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}
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return 0;
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}
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