Windows Kernel-Mode library

1 files changed, 59 insertions, 0 deletions

diff --git a/src/status.rs b/src/status.rs
new file mode 100644
index 0000000..aae9ec5
--- /dev/null
+++ b/src/status.rs
@@ -0,0 +1,59 @@
+//! NT Status codes.
+#![allow(non_camel_case_types)]
+#![allow(overflowing_literals)]
+
+/// NT Status type.
+pub type NTSTATUS = Status;
+
+/// A specialized `Result` type for NT operations.
+pub type Result<T> = ::core::result::Result<T, Status>;
+
+
+/// NT Status code.
+#[repr(C)]
+#[derive(Clone, Copy)]
+pub enum Status {
+	success = 0,
+	unsuccessful = 0xC0000001,
+}
+
+impl Status {
+	/// Evaluates to `true` if the `Status` is a success type (`0..0x3FFFFFFF`)
+	/// or an informational type (`0x40000000..0x7FFFFFFF`).
+	pub fn is_ok(&self) -> bool {
+		(*self as i32) >= 0
+	}
+	/// Status is a warning or error type.
+	pub fn is_err(&self) -> bool {
+		(*self as i32) < 0
+	}
+	/// Status is a success type.
+	pub fn is_success(&self) -> bool {
+		let c = *self as u32;
+		c > 0 && c < 0x3FFF_FFFF
+	}
+	/// Status is a information type.
+	pub fn is_information(&self) -> bool {
+		let c = *self as u32;
+		c > 0x4000_0000 && c < 0x7FFF_FFFF
+	}
+	/// Status is a warning type.
+	pub fn is_warning(&self) -> bool {
+		let c = *self as u32;
+		c > 0x8000_0000 && c < 0xBFFF_FFFF
+	}
+	/// Status is a error type.
+	pub fn is_error(&self) -> bool {
+		let c = *self as u32;
+		c > 0xC000_0000 && c < 0xFFFF_FFFF
+	}
+}
+
+/// Convert `Status` to `Result<()>`.
+pub fn check(st: Status) -> Result<()> {
+	if st.is_err() {
+		Err(st)
+	} else {
+		Ok(())
+	}
+}