Function vmw_backdoor::access_backdoor_privileged

source · 
pub fn access_backdoor_privileged() -> Result<BackdoorGuard, VmwError>
Expand description

Try to acquire access to the backdoor, but do NOT probe its presence.

On Linux, this tries to change I/O access level via iopl(). That requires running with CAP_SYS_RAWIO capability and it is not compatible with kernel_lockdown.

Examples found in repository?
examples/check-backdoor.rs (line 8)
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fn main() {
    let is_vmw = vmw::is_vmware_cpu();
    println!("VMware CPU detected: {}.", is_vmw);

    let mut backdoor = vmw::access_backdoor_privileged().unwrap();
    println!("Raised I/O access to reach backdoor port.");

    let found = match backdoor.probe_vmware_backdoor() {
        Ok(()) => true,
        Err(_) => false,
    };
    println!("VMware backdoor detected: {}.", found);
}