added support to query caps on kvm fd + few caps

1 files changed, 34 insertions, 0 deletions

diff --git a/src/cap.rs b/src/cap.rs
new file mode 100644
index 0000000..672ca75
--- /dev/null
+++ b/src/cap.rs
@@ -0,0 +1,34 @@
+//! Definitions of KVM capabilities.
+
+use crate::kvm_sys;
+use std::convert::Into;
+
+/// Definition of capabilities that return a bool value indicating whether the capability is
+/// supported or not.
+#[repr(u64)]
+pub enum CapBool {
+    /// Check if capabilities can be queried on VM fds (`KVM_CAP_CHECK_EXTENSION_VM`).
+    CheckExtensionVm = kvm_sys::KVM_CAP_CHECK_EXTENSION_VM,
+}
+
+impl Into<u64> for CapBool {
+    fn into(self) -> u64 {
+        self as u64
+    }
+}
+
+/// Definition of capabilities that return an integer value indicating the amount of the queried
+/// capability.
+#[repr(u64)]
+pub enum CapInt {
+    /// Get the recommended max VPCUs (`KVM_CAP_NR_VCPUS`).
+    NrVcpus = kvm_sys::KVM_CAP_NR_VCPUS,
+    /// Get the possible max VPCUs (`KVM_CAP_MAX_VCPUS`).
+    MaxVcpus = kvm_sys::KVM_CAP_MAX_VCPUS,
+}
+
+impl Into<u64> for CapInt {
+    fn into(self) -> u64 {
+        self as u64
+    }
+}