Use namespaced enum variants.

As per this pull request rust-lang/rust#18973,
enum variants require fully qualified path to access them.
This commit introduces boring changes to make nix-rust compiles againts
new rust.

Author: little-arhat

src/errno.rs

@@ -4,6 +4,7 @@ use std::num::from_uint;
 use libc::c_int;
 
 pub use self::consts::*;
+pub use self::consts::Errno::*;
 
 pub type SysResult<T> = Result<T, SysError>;
 
@@ -676,9 +677,9 @@ mod consts {
         EQFULL          = 106,
     }
 
-    pub const ELAST: Errno       = EQFULL;
-    pub const EWOULDBLOCK: Errno = EAGAIN;
-    pub const EDEADLOCK:   Errno = EDEADLK;
+    pub const ELAST: Errno       = Errno::EQFULL;
+    pub const EWOULDBLOCK: Errno = Errno::EAGAIN;
+    pub const EDEADLOCK:   Errno = Errno::EDEADLK;
 
-    pub const EL2NSYNC: Errno = UnknownErrno;
+    pub const EL2NSYNC: Errno = Errno::UnknownErrno;
 }

src/fcntl.rs

@@ -100,6 +100,8 @@ pub enum FcntlArg<'a> {
 
 // TODO: Figure out how to handle value fcntl returns
 pub fn fcntl(fd: Fd, arg: FcntlArg) -> SysResult<()> {
+    use self::FcntlArg::*;
+
     let res = unsafe {
         match arg {
             F_SETFD(flag) => ffi::fcntl(fd, ffi::F_SETFD, flag.bits()),

src/sys/socket.rs

@@ -1,7 +1,7 @@
 use std::{mem, ptr, fmt};
-use std::num::Int;
 use libc::{c_void, c_int, socklen_t, size_t, ssize_t};
-use fcntl::{Fd, fcntl, F_SETFL, F_SETFD, FD_CLOEXEC, O_NONBLOCK};
+use fcntl::{Fd, fcntl, FD_CLOEXEC, O_NONBLOCK};
+use fcntl::FcntlArg::{F_SETFD, F_SETFL};
 use errno::{SysResult, SysError, from_ffi};
 use features;
 
@@ -257,6 +257,8 @@ pub fn listen(sockfd: Fd, backlog: uint) -> SysResult<()> {
 }
 
 pub fn bind(sockfd: Fd, addr: &SockAddr) -> SysResult<()> {
+    use self::SockAddr::*;
+
     let res = unsafe {
         match *addr {
             SockIpV4(ref addr) => ffi::bind(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_in>() as socklen_t),
@@ -330,6 +332,8 @@ fn accept4_polyfill(sockfd: Fd, flags: SockFlag) -> SysResult<Fd> {
 }
 
 pub fn connect(sockfd: Fd, addr: &SockAddr) -> SysResult<()> {
+    use self::SockAddr::*;
+
     let res = unsafe {
         match *addr {
             SockIpV4(ref addr) => ffi::connect(sockfd, mem::transmute(addr), mem::size_of::<sockaddr_in>() as socklen_t),
@@ -344,7 +348,8 @@ pub fn connect(sockfd: Fd, addr: &SockAddr) -> SysResult<()> {
 mod sa_helpers {
     use std::mem;
     use libc::{sockaddr_storage, sockaddr_in, sockaddr_in6, sockaddr_un};
-    use super::{SockAddr, SockIpV6, SockIpV4, SockUnix};
+    use super::SockAddr;
+    use super::SockAddr::*;
 
     pub fn to_sockaddr_ipv4(addr: &sockaddr_storage) -> SockAddr {
         let sin : &sockaddr_in = unsafe { mem::transmute(addr) };
@@ -385,6 +390,8 @@ pub fn recvfrom(sockfd: Fd, buf: &mut [u8]) -> SysResult<(uint, SockAddr)> {
 }
 
 fn print_ipv4_addr(sin: &sockaddr_in, f: &mut fmt::Formatter) -> fmt::Result {
+    use std::num::Int;
+
     let ip_addr = Int::from_be(sin.sin_addr.s_addr);
     let port = Int::from_be(sin.sin_port);
 
@@ -399,7 +406,7 @@ fn print_ipv4_addr(sin: &sockaddr_in, f: &mut fmt::Formatter) -> fmt::Result {
 impl fmt::Show for SockAddr {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
-            SockIpV4(sin) => print_ipv4_addr(&sin, f),
+            SockAddr::SockIpV4(sin) => print_ipv4_addr(&sin, f),
             _ => unimplemented!()
         }
     }
@@ -420,6 +427,8 @@ fn sendto_sockaddr<T>(sockfd: Fd, buf: &[u8], flags: SockMessageFlags, addr: &T)
 }
 
 pub fn sendto(sockfd: Fd, buf: &[u8], addr: &SockAddr, flags: SockMessageFlags) -> SysResult<uint> {
+    use self::SockAddr::*;
+
     let ret = match *addr {
         SockIpV4(ref addr) => sendto_sockaddr(sockfd, buf, flags, addr),
         SockIpV6(ref addr) => sendto_sockaddr(sockfd, buf, flags, addr),
@@ -482,6 +491,8 @@ fn getsockname_sockaddr<T>(sockfd: Fd, addr: &T) -> SysResult<bool> {
 }
 
 pub fn getsockname(sockfd: Fd, addr: &mut SockAddr) -> SysResult<bool> {
+    use self::SockAddr::*;
+
     match *addr {
         SockIpV4(ref addr) => getsockname_sockaddr(sockfd, addr),
         SockIpV6(ref addr) => getsockname_sockaddr(sockfd, addr),

src/sys/wait.rs

@@ -21,6 +21,8 @@ pub enum WaitStatus {
 }
 
 pub fn waitpid(pid: pid_t, options: WaitPidFlag) -> SysResult<WaitStatus> {
+    use self::WaitStatus::*;
+
     let mut status: i32 = 0;
 
     let res = unsafe { ffi::waitpid(pid as pid_t, &mut status as *mut c_int, options.bits()) };

src/unistd.rs

@@ -1,7 +1,9 @@
 use std::{mem, ptr};
 use std::c_str::{CString, ToCStr};
 use libc::{c_char, c_void, c_int, size_t, pid_t, off_t};
-use fcntl::{fcntl, Fd, OFlag, O_NONBLOCK, O_CLOEXEC, FD_CLOEXEC, F_SETFD, F_SETFL};
+use fcntl::{fcntl, Fd, OFlag, O_NONBLOCK, O_CLOEXEC, FD_CLOEXEC};
+use fcntl::FcntlArg::{F_SETFD, F_SETFL};
+
 use errno::{SysResult, SysError, from_ffi};
 use core::raw::Slice as RawSlice;
 
@@ -59,20 +61,22 @@ pub enum Fork {
 impl Fork {
     pub fn is_child(&self) -> bool {
         match *self {
-            Child => true,
+            Fork::Child => true,
             _ => false
         }
     }
 
     pub fn is_parent(&self) -> bool {
         match *self {
-            Parent(_) => true,
+            Fork::Parent(_) => true,
             _ => false
         }
     }
 }
 
 pub fn fork() -> SysResult<Fork> {
+    use self::Fork::*;
+
     let res = unsafe { ffi::fork() };
 
     if res < 0 {