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/*-
* Copyright 2014 John Baldwin
* Copyright 2019 Stephen J. Kiernan
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <dev/smbios/smbios.h>
static const struct {
const char *vm_bname;
int vm_guest;
} vm_bnames[] = {
{ "QEMU", VM_GUEST_VM }, /* QEMU */
{ "Plex86", VM_GUEST_VM }, /* Plex86 */
{ "Bochs", VM_GUEST_VM }, /* Bochs */
{ "Xen", VM_GUEST_XEN }, /* Xen */
{ "BHYVE", VM_GUEST_BHYVE }, /* bhyve */
{ "Seabios", VM_GUEST_KVM }, /* KVM */
};
static const struct {
const char *vm_pname;
int vm_guest;
} vm_pnames[] = {
{ "VMware Virtual Platform", VM_GUEST_VMWARE },
{ "Virtual Machine", VM_GUEST_VM }, /* Microsoft VirtualPC */
{ "QEMU Virtual Machine", VM_GUEST_VM },
{ "VirtualBox", VM_GUEST_VBOX },
{ "Parallels Virtual Platform", VM_GUEST_PARALLELS },
{ "KVM", VM_GUEST_KVM },
};
void
identify_hypervisor_smbios(void)
{
char *p;
int i;
/*
* Some platforms, e.g., amd64, have other ways of detecting what kind
* of hypervisor we may be running under. Make sure we don't clobber a
* more specific vm_guest that's been previously detected.
*/
if (vm_guest != VM_GUEST_NO && vm_guest != VM_GUEST_VM)
return;
/*
* XXX: Some of these entries may not be needed since they were
* added to FreeBSD before the checks above.
*/
p = kern_getenv("smbios.bios.vendor");
if (p != NULL) {
for (i = 0; i < nitems(vm_bnames); i++)
if (strcmp(p, vm_bnames[i].vm_bname) == 0) {
vm_guest = vm_bnames[i].vm_guest;
/* If we have a specific match, return */
if (vm_guest != VM_GUEST_VM) {
freeenv(p);
return;
}
/*
* We are done with bnames, but there might be
* a more specific match in the pnames
*/
break;
}
freeenv(p);
}
p = kern_getenv("smbios.system.product");
if (p != NULL) {
for (i = 0; i < nitems(vm_pnames); i++)
if (strcmp(p, vm_pnames[i].vm_pname) == 0) {
vm_guest = vm_pnames[i].vm_guest;
freeenv(p);
return;
}
freeenv(p);
}
}
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