feat(crates): new userspace examples

Thanks, StephanvanSchaik.

2 files changed, 49 insertions, 0 deletions

diff --git a/crates/user/io_controls/Cargo.toml b/crates/user/io_controls/Cargo.toml
new file mode 100644
index 0000000..5d49408
--- /dev/null
+++ b/crates/user/io_controls/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "io_controls"
+version = "0.1.0"
+edition = "2021"
+license = "MIT"
+
+[target.'cfg(windows)'.dependencies]
+winioctl = { path = "../../winioctl" }
diff --git a/crates/user/io_controls/src/main.rs b/crates/user/io_controls/src/main.rs
new file mode 100644
index 0000000..1c5e73c
--- /dev/null
+++ b/crates/user/io_controls/src/main.rs
@@ -0,0 +1,41 @@
+use std::os::windows::io::AsRawHandle;
+
+use winioctl::{ioctl_none, ioctl_read, ioctl_write, DeviceType, Error};
+
+const IOCTL_PRINT_VALUE: u32 = 0x800;
+const IOCTL_READ_VALUE: u32 = 0x801;
+const IOCTL_WRITE_VALUE: u32 = 0x802;
+
+ioctl_none!(ioctl_print_value, DeviceType::Unknown, IOCTL_PRINT_VALUE);
+ioctl_read!(ioctl_read_value, DeviceType::Unknown, IOCTL_READ_VALUE, i32);
+ioctl_write!(
+  ioctl_write_value,
+  DeviceType::Unknown,
+  IOCTL_WRITE_VALUE,
+  i32
+);
+
+fn main() -> Result<(), Error> {
+  let file = std::fs::OpenOptions::new()
+    .read(true)
+    .write(true)
+    .create(false)
+    .open("\\??\\Example")?;
+  let mut value = 0;
+
+  unsafe {
+    ioctl_read_value(file.as_raw_handle(), &mut value)?;
+  }
+
+  value += 1;
+
+  unsafe {
+    ioctl_write_value(file.as_raw_handle(), &value)?;
+  }
+
+  unsafe {
+    ioctl_print_value(file.as_raw_handle())?;
+  }
+
+  Ok(())
+}