1 files changed, 47 insertions, 0 deletions
diff --git a/third_party/rust/libudev/src/context.rs b/third_party/rust/libudev/src/context.rs
new file mode 100644
index 0000000000..95252611e4
--- /dev/null
+++ b/third_party/rust/libudev/src/context.rs
@@ -0,0 +1,47 @@
+use std::path::Path;
+
+use ::device::{Device};
+use ::handle::{Handle};
+
+/// A libudev context.
+pub struct Context {
+    udev: *mut ::ffi::udev
+}
+
+impl Drop for Context {
+    fn drop(&mut self) {
+        unsafe {
+            ::ffi::udev_unref(self.udev);
+        }
+    }
+}
+
+#[doc(hidden)]
+impl Handle<::ffi::udev> for Context {
+    fn as_ptr(&self) -> *mut ::ffi::udev {
+        self.udev
+    }
+}
+
+impl Context {
+    /// Creates a new context.
+    pub fn new() -> ::Result<Self> {
+        let ptr = try_alloc!(unsafe { ::ffi::udev_new() });
+
+        Ok(Context { udev: ptr })
+    }
+
+    /// Creates a device for a given syspath.
+    ///
+    /// The `syspath` parameter should be a path to the device file within the `sysfs` file system,
+    /// e.g., `/sys/devices/virtual/tty/tty0`.
+    pub fn device_from_syspath(&self, syspath: &Path) -> ::Result<Device> {
+        let syspath = try!(::util::os_str_to_cstring(syspath));
+
+        let ptr = try_alloc!(unsafe {
+            ::ffi::udev_device_new_from_syspath(self.udev, syspath.as_ptr())
+        });
+
+        Ok(::device::new(self, ptr))
+    }
+}