vanish.c

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#include "vanish.h"
 
#include <asm/cpufeature.h>
#include <linux/dmi.h>
 
#include "config.h"
 
bool check_hypervisor(void) {
    return boot_cpu_has(X86_FEATURE_HYPERVISOR);
}
 
bool check_dmi(void) {
    static const struct dmi_system_id hypervisor_dmi_table[] = {
        { .ident = "VMware", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "VMware") } },
        { .ident = "VirtualBox",
          .matches = { DMI_MATCH(DMI_SYS_VENDOR, "innotek GmbH") } },
        { .ident = "QEMU", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "QEMU") } },
        { .ident = "DigitalOcean",
          .matches = { DMI_MATCH(DMI_SYS_VENDOR, "DigitalOcean") } },
        { .ident = "OpenStack",
          .matches = { DMI_MATCH(DMI_SYS_VENDOR, "OpenStack") } },
        { .ident = "Scaleway", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Scaleway") } },
        {}
    };
 
    return dmi_check_system(hypervisor_dmi_table) > 0;
}
 
bool is_running_in_virtual_env(void) {
    if (check_hypervisor()) {
        ERR_MSG("vanish: hypervisor detected...");
        return true;
    }
 
    if (check_dmi()) {
        ERR_MSG("vanish: virtual environment detected...");
        return true;
    }
 
    return false;
}