diff --git a/apkverity/src/dm/sys.rs b/apkverity/src/dm/sys.rs
index f623a2b..e709bf0 100644
--- a/apkverity/src/dm/sys.rs
+++ b/apkverity/src/dm/sys.rs
@@ -15,6 +15,7 @@
  */
 
 use bitflags::bitflags;
+use data_model::DataInit;
 
 // UAPI for device mapper can be found at include/uapi/linux/dm-ioctl.h
 
@@ -43,6 +44,7 @@
 }
 
 #[repr(C)]
+#[derive(Copy, Clone)]
 pub struct DmIoctl {
     pub version: [u32; 3],
     pub data_size: u32,
@@ -58,6 +60,9 @@
     pub data: [u8; 7],
 }
 
+// SAFETY: C struct is safe to be initialized from raw data
+unsafe impl DataInit for DmIoctl {}
+
 pub const DM_VERSION_MAJOR: u32 = 4;
 pub const DM_VERSION_MINOR: u32 = 0;
 pub const DM_VERSION_PATCHLEVEL: u32 = 0;
diff --git a/apkverity/src/dm/verity.rs b/apkverity/src/dm/verity.rs
index 950b26e..3a49ee2 100644
--- a/apkverity/src/dm/verity.rs
+++ b/apkverity/src/dm/verity.rs
@@ -19,6 +19,7 @@
 // which is then given to `DeviceMapper` to create a mapper device.
 
 use anyhow::{bail, Context, Result};
+use data_model::DataInit;
 use std::io::Write;
 use std::mem::size_of;
 use std::path::Path;
@@ -55,7 +56,7 @@
 pub struct DmVerityTarget(Box<[u8]>);
 
 impl DmVerityTarget {
-    pub fn as_u8_slice(&self) -> &[u8] {
+    pub fn as_slice(&self) -> &[u8] {
         self.0.as_ref()
     }
 }
@@ -188,7 +189,7 @@
         header.next = aligned_size as u32;
 
         let mut buf = Vec::with_capacity(aligned_size);
-        buf.write_all(header.as_u8_slice())?;
+        buf.write_all(header.as_slice())?;
         buf.write_all(body.as_bytes())?;
         buf.write_all(vec![0; padding].as_slice())?;
         Ok(DmVerityTarget(buf.into_boxed_slice()))