Test on xenial (#63)

* Test on xenial

* Modernize

* Fix for recent kernels where this takes a u64

* See if things can be copy

Author: alex

.travis.yml

@@ -1,4 +1,7 @@
-sudo: required
+matrix:
+    include:
+        - dist: trusty
+        - dist: xenial
 
 language: rust
 rust:

build.rs

@@ -45,7 +45,6 @@ fn main() {
     let mut builder = bindgen::Builder::default()
         .use_core()
         .ctypes_prefix("c_types")
-        .no_copy(".*")
         .derive_default(true)
         .rustfmt_bindings(true);
 

src/user_ptr.rs

@@ -100,7 +100,7 @@ impl UserSlicePtrReader {
             bindings::_copy_from_user(
                 data.as_mut_ptr() as *mut c_types::c_void,
                 self.0,
-                data.len() as u32,
+                data.len() as _,
             )
         };
         if res != 0 {
@@ -126,7 +126,7 @@ impl UserSlicePtrWriter {
             bindings::_copy_to_user(
                 self.0,
                 data.as_ptr() as *const c_types::c_void,
-                data.len() as u32,
+                data.len() as _,
             )
         };
         if res != 0 {