exp: cross #7

src/deb/cross.rs

@@ -38,6 +38,20 @@ impl EphemeralContextGuard {
             return Err(format!("mmdebstrap failed for series {}", series).into());
         }
 
+        // Mount '/dev' inside the chroot
+        let status = context::current()
+            .command("sudo")
+            .arg("mount")
+            .arg("--bind")
+            .arg("/dev")
+            .arg(format!("{}/dev", chroot_path.display()))
+            .status()?;
+        if !status.success() {
+            // Clean up on failure
+            let _ = std::fs::remove_dir_all(&chroot_path);
+            return Err("Failed to mount /dev inside chroot".into());
+        }
+
         // Switch to an ephemeral context to build the package in the chroot
         context::manager().set_current_ephemeral(Context::new(ContextConfig::Unshare {
             path: chroot_path.to_string_lossy().to_string(),
@@ -59,6 +73,18 @@ impl Drop for EphemeralContextGuard {
             log::error!("Failed to restore context {}: {}", self.previous_context, e);
         }
 
+        // Unmount '/dev' inside the chroot
+        let status = context::current()
+            .command("sudo")
+            .arg("umount")
+            .arg(format!("{}/dev", &self.chroot_path.display()))
+            .status();
+        if status.is_err() || !status.unwrap().success() {
+            // If we fail to umount, then we can't remove (would remove /dev/xx on host)
+            log::error!("Failed to umount /dev inside chroot. Not cleaning up.");
+            return;
+        }
+
         // Remove chroot directory
         // We use the restored context to execute the cleanup command
         let result = context::current()