Make statx's padding fields private

Padding and reserved fields should not be publicly accessible, because
they may be replaced by new (functional) fields at any time.

Searching for these padding fields on github or Google reveals no users,
so making them private should not break any existing users.

It is possible that there are projects outside of github that access
these fields, but if so, they should have been warned by the fact that
these fields are prefixed by double underscores.

Signed-off-by: Max Reitz <[email protected]>

Author: XanClic

src/unix/linux_like/linux/gnu/mod.rs

@@ -13,7 +13,7 @@ s! {
         pub stx_uid: u32,
         pub stx_gid: u32,
         pub stx_mode: u16,
-        pub __statx_pad1: [u16; 1],
+        __statx_pad1: [u16; 1],
         pub stx_ino: u64,
         pub stx_size: u64,
         pub stx_blocks: u64,
@@ -26,7 +26,7 @@ s! {
         pub stx_rdev_minor: u32,
         pub stx_dev_major: u32,
         pub stx_dev_minor: u32,
-        pub __statx_pad2: [u64; 14],
+        __statx_pad2: [u64; 14],
     }
 
     pub struct statx_timestamp {