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/* $NetBSD: isqemu.h,v 1.4 2015/01/03 14:21:05 gson Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/param.h>
#include <sys/sysctl.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <err.h>
static __inline bool
isQEMU(void) {
#ifdef __FreeBSD__
char *vm_guest_name_buf;
size_t len;
bool is_vm;
if (sysctlbyname("kern.vm_guest", NULL, &len, NULL, 0) == -1)
err(EXIT_FAILURE, "sysctl");
if ((vm_guest_name_buf = malloc(len)) == NULL)
err(EXIT_FAILURE, "malloc");
if (sysctlbyname("kern.vm_guest", vm_guest_name_buf, &len, NULL, 0)
== -1)
err(EXIT_FAILURE, "sysctl");
if (strcmp(vm_guest_name_buf, "none") == 0)
is_vm = false;
else
is_vm = true;
free(vm_guest_name_buf);
return is_vm;
#else
#if defined(__i386__) || defined(__x86_64__)
char name[1024];
size_t len = sizeof(name);
if (sysctlbyname("machdep.cpu_brand", name, &len, NULL, 0) == -1) {
if (errno == ENOENT)
return false;
err(EXIT_FAILURE, "sysctl");
}
return strstr(name, "QEMU") != NULL;
#else
return false;
#endif
#endif
}
#ifdef TEST
int
main(void) {
return isQEMU();
}
#endif
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