1 files changed, 54 insertions, 0 deletions
diff --git a/src/data_collection/disks/unix/macos/io_kit/io_iterator.rs b/src/data_collection/disks/unix/macos/io_kit/io_iterator.rs
new file mode 100644
index 00000000..1f440466
--- /dev/null
+++ b/src/data_collection/disks/unix/macos/io_kit/io_iterator.rs
@@ -0,0 +1,54 @@
+//! Based on [heim's](https://github.com/heim-rs/heim/blob/master/heim-common/src/sys/macos/iokit/io_iterator.rs).
+//! implementation.
+
+use std::ops::{Deref, DerefMut};
+
+use mach2::kern_return;
+
+use super::{bindings::*, io_object::IoObject};
+
+/// Safe wrapper around the IOKit `io_iterator_t` type.
+#[derive(Debug)]
+pub struct IoIterator(io_iterator_t);
+
+impl From<io_iterator_t> for IoIterator {
+    fn from(iter: io_iterator_t) -> IoIterator {
+        IoIterator(iter)
+    }
+}
+
+impl Deref for IoIterator {
+    type Target = io_iterator_t;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for IoIterator {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
+impl Iterator for IoIterator {
+    type Item = IoObject;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        // Basically, we just stop when we hit 0.
+
+        // SAFETY: IOKit call, the passed argument (an `io_iterator_t`) is what is expected.
+        match unsafe { IOIteratorNext(self.0) } {
+            0 => None,
+            io_object => Some(IoObject::from(io_object)),
+        }
+    }
+}
+
+impl Drop for IoIterator {
+    fn drop(&mut self) {
+        // SAFETY: IOKit call, the passed argument (an `io_iterator_t`) is what is expected.
+        let result = unsafe { IOObjectRelease(self.0) };
+        assert_eq!(result, kern_return::KERN_SUCCESS);
+    }
+}