api: log when new bits appear

Author: mathstuf

Cargo.toml

@@ -18,5 +18,6 @@ members = ["libkeyutils-sys"]
 bitflags = "~0.9"
 errno = "~0.2"
 libkeyutils-sys = { path = "libkeyutils-sys", version = "~0.3" }
+log = "~0.4"
 
 libc = "~0.2"

src/api.rs

@@ -628,11 +628,16 @@ impl Description {
             None
         } else {
             if len > 5 {
-                println!("New fields detected! Please report this upstream to \
-                          https://github.com/mathstuf/rust-keyutils: {}",
-                         desc);
+                error!("New fields detected! Please report this upstream to \
+                        https://github.com/mathstuf/rust-keyutils: {}",
+                       desc);
             }
             let bits = KeyPermissions::from_str_radix(pieces[1], 16).unwrap();
+            if Permission::from_bits(bits).is_none() {
+                error!("New permission bits detected! Please report this upstream to \
+                        https://github.com/mathstuf/rust-keyutils: {}",
+                       bits);
+            }
             Some(Description {
                 type_: pieces[4].to_owned(),
                 uid: pieces[3].parse::<libc::uid_t>().unwrap(),

src/lib.rs

@@ -31,6 +31,7 @@
 #![warn(missing_docs)]
 
 #[macro_use] extern crate bitflags;
+#[macro_use] extern crate log;
 
 mod crates {
     // public