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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2019 Joyent, Inc.
*/
#include <sys/cpuid_drv.h>
#include <libintl.h>
#include <string.h>
#include <locale.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <err.h>
static const char dev_cpu_self_cpuid[] = "/dev/" CPUID_SELF_NAME;
int
main(int argc, char *argv[])
{
int ret = EXIT_SUCCESS;
int errflg = 0;
int fd;
int c;
(void) setlocale(LC_ALL, "");
(void) textdomain(TEXT_DOMAIN);
while ((c = getopt(argc, argv, "")) != EOF) {
switch (c) {
case '?':
default:
errflg++;
break;
}
}
if (errflg != 0 || optind == argc) {
fprintf(stderr, gettext("usage: rdmsr [0x<msrnr>...]\n"));
return (EXIT_FAILURE);
}
if ((fd = open(dev_cpu_self_cpuid, O_RDONLY)) == -1) {
err(EXIT_FAILURE, gettext("failed to open %s"),
dev_cpu_self_cpuid);
}
while (optind != argc) {
struct cpuid_rdmsr crm;
char *p;
errno = 0;
crm.cr_msr_nr = strtoull(argv[optind], &p, 0);
if (errno != 0 || p == argv[optind] || *p != '\0') {
fprintf(stderr,
gettext("rdmsr: invalid argument '%s'\n"),
argv[optind]);
exit(EXIT_FAILURE);
}
if (ioctl(fd, CPUID_RDMSR, &crm) != 0) {
warn(gettext("rdmsr of 0x%lx failed"), crm.cr_msr_nr);
ret = EXIT_FAILURE;
} else {
printf("0x%lx: 0x%lx\n", crm.cr_msr_nr, crm.cr_msr_val);
}
optind++;
}
return (ret);
}
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