src/libstd/sys/unix/mod.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![allow(missing_docs)]
  12 #![allow(non_camel_case_types)]
  13
  14 use prelude::v1::*;
  15
  16 use io::{self, ErrorKind};
  17 use libc;
  18 use num::One;
  19 use ops::Neg;
  20
  21 #[cfg(target_os = "android")]   pub use os::android as platform;
  22 #[cfg(target_os = "bitrig")]    pub use os::bitrig as platform;
  23 #[cfg(target_os = "dragonfly")] pub use os::dragonfly as platform;
  24 #[cfg(target_os = "freebsd")]   pub use os::freebsd as platform;
  25 #[cfg(target_os = "ios")]       pub use os::ios as platform;
  26 #[cfg(target_os = "linux")]     pub use os::linux as platform;
  27 #[cfg(target_os = "macos")]     pub use os::macos as platform;
  28 #[cfg(target_os = "nacl")]      pub use os::nacl as platform;
  29 #[cfg(target_os = "openbsd")]   pub use os::openbsd as platform;
  30
  31 pub mod backtrace;
  32 pub mod c;
  33 pub mod condvar;
  34 pub mod ext;
  35 pub mod fd;
  36 pub mod fs;
  37 pub mod mutex;
  38 pub mod net;
  39 pub mod os;
  40 pub mod os_str;
  41 pub mod pipe;
  42 pub mod process;
  43 pub mod rwlock;
  44 pub mod stack_overflow;
  45 pub mod sync;
  46 pub mod thread;
  47 pub mod thread_local;
  48 pub mod time;
  49 pub mod stdio;
  50
  51 pub fn decode_error_kind(errno: i32) -> ErrorKind {
  52     match errno as libc::c_int {
  53         libc::ECONNREFUSED => ErrorKind::ConnectionRefused,
  54         libc::ECONNRESET => ErrorKind::ConnectionReset,
  55         libc::EPERM | libc::EACCES => ErrorKind::PermissionDenied,
  56         libc::EPIPE => ErrorKind::BrokenPipe,
  57         libc::ENOTCONN => ErrorKind::NotConnected,
  58         libc::ECONNABORTED => ErrorKind::ConnectionAborted,
  59         libc::EADDRNOTAVAIL => ErrorKind::AddrNotAvailable,
  60         libc::EADDRINUSE => ErrorKind::AddrInUse,
  61         libc::ENOENT => ErrorKind::NotFound,
  62         libc::EINTR => ErrorKind::Interrupted,
  63         libc::EINVAL => ErrorKind::InvalidInput,
  64         libc::ETIMEDOUT => ErrorKind::TimedOut,
  65         libc::consts::os::posix88::EEXIST => ErrorKind::AlreadyExists,
  66
  67         // These two constants can have the same value on some systems,
  68         // but different values on others, so we can't use a match
  69         // clause
  70         x if x == libc::EAGAIN || x == libc::EWOULDBLOCK =>
  71             ErrorKind::WouldBlock,
  72
  73         _ => ErrorKind::Other,
  74     }
  75 }
  76
  77 pub fn cvt<T: One + PartialEq + Neg<Output=T>>(t: T) -> io::Result<T> {
  78     let one: T = T::one();
  79     if t == -one {
  80         Err(io::Error::last_os_error())
  81     } else {
  82         Ok(t)
  83     }
  84 }
  85
  86 #[allow(deprecated)]
  87 pub fn cvt_r<T, F>(mut f: F) -> io::Result<T>
  88     where T: One + PartialEq + Neg<Output=T>, F: FnMut() -> T
  89 {
  90     loop {
  91         match cvt(f()) {
  92             Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
  93             other => return other,
  94         }
  95     }
  96 }
  97
  98 pub fn ms_to_timeval(ms: u64) -> libc::timeval {
  99     libc::timeval {
 100         tv_sec: (ms / 1000) as libc::time_t,
 101         tv_usec: ((ms % 1000) * 1000) as libc::suseconds_t,
 102     }
 103 }