Implement Copy/Clone for all types missing it

src/fcntl.rs

@@ -267,6 +267,7 @@ pub fn fcntl(fd: RawFd, arg: FcntlArg) -> Result<c_int> {
     Errno::result(res)
 }
 
+#[derive(Clone, Copy)]
 pub enum FlockArg {
     LockShared,
     LockExclusive,

src/lib.rs

@@ -13,6 +13,7 @@
 #![deny(unused_qualifications)]
 #![deny(unstable_features)]
 #![deny(unused_import_braces)]
+#![deny(missing_copy_implementations)]
 
 #[macro_use]
 extern crate bitflags;

src/pty.rs

@@ -17,6 +17,7 @@ use errno::Errno;
 ///
 /// This is returned by `openpty`.  Note that this type does *not* implement `Drop`, so the user
 /// must manually close the file descriptors.
+#[derive(Clone, Copy)]
 pub struct OpenptyResult {
     pub master: RawFd,
     pub slave: RawFd,

src/sys/select.rs

@@ -10,6 +10,7 @@ pub use libc::FD_SETSIZE;
 
 // FIXME: Change to repr(transparent) once it's stable
 #[repr(C)]
+#[derive(Clone, Copy)]
 pub struct FdSet(libc::fd_set);
 
 impl FdSet {

src/sys/signal.rs

@@ -163,6 +163,7 @@ const SIGNALS: [Signal; 31] = [
 
 pub const NSIG: libc::c_int = 32;
 
+#[derive(Clone, Copy)]
 pub struct SignalIterator {
     next: usize,
 }
@@ -359,6 +360,7 @@ pub enum SigHandler {
     SigAction(extern fn(libc::c_int, *mut libc::siginfo_t, *mut libc::c_void))
 }
 
+#[derive(Clone, Copy)]
 pub struct SigAction {
     sigaction: libc::sigaction
 }
@@ -528,6 +530,7 @@ mod sigevent {
     /// Used to request asynchronous notification of the completion of certain
     /// events, such as POSIX AIO and timers.
     #[repr(C)]
+    #[derive(Clone, Copy)]
     pub struct SigEvent {
         sigevent: libc::sigevent
     }

src/sys/socket/addr.rs

@@ -392,7 +392,7 @@ impl fmt::Debug for InetAddr {
  * ===== IpAddr =====
  *
  */
-
+#[derive(Clone, Copy)]
 pub enum IpAddr {
     V4(Ipv4Addr),
     V6(Ipv6Addr),

src/sys/statvfs.rs

@@ -57,6 +57,7 @@ libc_bitflags!(
 /// For more information see the [`statvfs(3)` man pages](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_statvfs.h.html).
 // FIXME: Replace with repr(transparent)
 #[repr(C)]
+#[derive(Clone, Copy)]
 pub struct Statvfs(libc::statvfs);
 
 impl Statvfs {

src/sys/uio.rs

@@ -67,6 +67,7 @@ pub fn pread(fd: RawFd, buf: &mut [u8], offset: off_t) -> Result<usize>{
 /// and [`process_vm_writev`](fn.process_vm_writev.html).
 #[cfg(target_os = "linux")]
 #[repr(C)]
+#[derive(Clone, Copy)]
 pub struct RemoteIoVec {
     /// The starting address of this slice (`iov_base`).
     pub base: usize,

src/unistd.rs

@@ -822,6 +822,7 @@ pub fn write(fd: RawFd, buf: &[u8]) -> Result<usize> {
 /// [`lseek`]: ./fn.lseek.html
 /// [`lseek64`]: ./fn.lseek64.html
 #[repr(i32)]
+#[derive(Clone, Copy)]
 pub enum Whence {
     /// Specify an offset relative to the start of the file.
     SeekSet = libc::SEEK_SET,