Add ENOTSUP to Linux and Android

Author: jmmv

CHANGELOG.md

@@ -34,6 +34,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   ([#952](https://github.com/nix-rust/nix/pull/952))
 - Added the `time_t` and `suseconds_t` public aliases within `sys::time`.
   ([#968](https://github.com/nix-rust/nix/pull/968))
+- Added ENOTSUP errno support for Linux and Android.
+  ([#969](https://github.com/nix-rust/nix/pull/969))
 
 ### Changed
 - Increased required Rust version to 1.24.1

src/errno.rs

@@ -202,6 +202,7 @@ fn desc(errno: Errno) -> &'static str {
         ECONNREFUSED    => "Connection refused",
         EHOSTDOWN       => "Host is down",
         EHOSTUNREACH    => "No route to host",
+        ENOTSUP         => "Operation not supported",
 
         #[cfg(any(target_os = "linux", target_os = "android"))]
         ECHRNG          => "Channel number out of range",
@@ -428,9 +429,6 @@ fn desc(errno: Errno) -> &'static str {
         #[cfg(any(target_os = "macos", target_os = "freebsd", target_os = "ios"))]
         EOWNERDEAD      => "Previous owner died",
 
-        #[cfg(any(target_os = "macos", target_os = "freebsd", target_os = "dragonfly", target_os = "ios", target_os = "openbsd", target_os = "netbsd"))]
-        ENOTSUP         => "Operation not supported",
-
         #[cfg(any(target_os = "macos", target_os = "freebsd", target_os = "dragonfly", target_os = "ios", target_os = "openbsd", target_os = "netbsd"))]
         EPROCLIM        => "Too many processes",
 
@@ -629,6 +627,7 @@ mod consts {
         ENOPROTOOPT     = libc::ENOPROTOOPT,
         EPROTONOSUPPORT = libc::EPROTONOSUPPORT,
         ESOCKTNOSUPPORT = libc::ESOCKTNOSUPPORT,
+        ENOTSUP         = libc::ENOTSUP,
         EOPNOTSUPP      = libc::EOPNOTSUPP,
         EPFNOSUPPORT    = libc::EPFNOSUPPORT,
         EAFNOSUPPORT    = libc::EAFNOSUPPORT,