Delete ctr-std to use my fork of the rust repo instead

1 files changed, 0 insertions, 364 deletions

diff --git a/ctr-std/src/sys/windows/pipe.rs b/ctr-std/src/sys/windows/pipe.rs
deleted file mode 100644
index df1dd74..0000000
--- a/ctr-std/src/sys/windows/pipe.rs
+++ /dev/null
@@ -1,364 +0,0 @@
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use os::windows::prelude::*;
-
-use ffi::OsStr;
-use io;
-use mem;
-use path::Path;
-use ptr;
-use slice;
-use sync::atomic::Ordering::SeqCst;
-use sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT};
-use sys::c;
-use sys::fs::{File, OpenOptions};
-use sys::handle::Handle;
-use sys::hashmap_random_keys;
-
-////////////////////////////////////////////////////////////////////////////////
-// Anonymous pipes
-////////////////////////////////////////////////////////////////////////////////
-
-pub struct AnonPipe {
-    inner: Handle,
-}
-
-pub struct Pipes {
-    pub ours: AnonPipe,
-    pub theirs: AnonPipe,
-}
-
-/// Although this looks similar to `anon_pipe` in the Unix module it's actually
-/// subtly different. Here we'll return two pipes in the `Pipes` return value,
-/// but one is intended for "us" where as the other is intended for "someone
-/// else".
-///
-/// Currently the only use case for this function is pipes for stdio on
-/// processes in the standard library, so "ours" is the one that'll stay in our
-/// process whereas "theirs" will be inherited to a child.
-///
-/// The ours/theirs pipes are *not* specifically readable or writable. Each
-/// one only supports a read or a write, but which is which depends on the
-/// boolean flag given. If `ours_readable` is true then `ours` is readable where
-/// `theirs` is writable. Conversely if `ours_readable` is false then `ours` is
-/// writable where `theirs` is readable.
-///
-/// Also note that the `ours` pipe is always a handle opened up in overlapped
-/// mode. This means that technically speaking it should only ever be used
-/// with `OVERLAPPED` instances, but also works out ok if it's only ever used
-/// once at a time (which we do indeed guarantee).
-pub fn anon_pipe(ours_readable: bool) -> io::Result<Pipes> {
-    // Note that we specifically do *not* use `CreatePipe` here because
-    // unfortunately the anonymous pipes returned do not support overlapped
-    // operations. Instead, we create a "hopefully unique" name and create a
-    // named pipe which has overlapped operations enabled.
-    //
-    // Once we do this, we connect do it as usual via `CreateFileW`, and then
-    // we return those reader/writer halves. Note that the `ours` pipe return
-    // value is always the named pipe, whereas `theirs` is just the normal file.
-    // This should hopefully shield us from child processes which assume their
-    // stdout is a named pipe, which would indeed be odd!
-    unsafe {
-        let ours;
-        let mut name;
-        let mut tries = 0;
-        let mut reject_remote_clients_flag = c::PIPE_REJECT_REMOTE_CLIENTS;
-        loop {
-            tries += 1;
-            name = format!(r"\\.\pipe\__rust_anonymous_pipe1__.{}.{}",
-                           c::GetCurrentProcessId(),
-                           random_number());
-            let wide_name = OsStr::new(&name)
-                                  .encode_wide()
-                                  .chain(Some(0))
-                                  .collect::<Vec<_>>();
-            let mut flags = c::FILE_FLAG_FIRST_PIPE_INSTANCE |
-                c::FILE_FLAG_OVERLAPPED;
-            if ours_readable {
-                flags |= c::PIPE_ACCESS_INBOUND;
-            } else {
-                flags |= c::PIPE_ACCESS_OUTBOUND;
-            }
-
-            let handle = c::CreateNamedPipeW(wide_name.as_ptr(),
-                                             flags,
-                                             c::PIPE_TYPE_BYTE |
-                                             c::PIPE_READMODE_BYTE |
-                                             c::PIPE_WAIT |
-                                             reject_remote_clients_flag,
-                                             1,
-                                             4096,
-                                             4096,
-                                             0,
-                                             ptr::null_mut());
-
-            // We pass the FILE_FLAG_FIRST_PIPE_INSTANCE flag above, and we're
-            // also just doing a best effort at selecting a unique name. If
-            // ERROR_ACCESS_DENIED is returned then it could mean that we
-            // accidentally conflicted with an already existing pipe, so we try
-            // again.
-            //
-            // Don't try again too much though as this could also perhaps be a
-            // legit error.
-            // If ERROR_INVALID_PARAMETER is returned, this probably means we're
-            // running on pre-Vista version where PIPE_REJECT_REMOTE_CLIENTS is
-            // not supported, so we continue retrying without it. This implies
-            // reduced security on Windows versions older than Vista by allowing
-            // connections to this pipe from remote machines.
-            // Proper fix would increase the number of FFI imports and introduce
-            // significant amount of Windows XP specific code with no clean
-            // testing strategy
-            // for more info see https://github.com/rust-lang/rust/pull/37677
-            if handle == c::INVALID_HANDLE_VALUE {
-                let err = io::Error::last_os_error();
-                let raw_os_err = err.raw_os_error();
-                if tries < 10 {
-                    if raw_os_err == Some(c::ERROR_ACCESS_DENIED as i32) {
-                        continue
-                    } else if reject_remote_clients_flag != 0 &&
-                        raw_os_err == Some(c::ERROR_INVALID_PARAMETER as i32) {
-                        reject_remote_clients_flag = 0;
-                        tries -= 1;
-                        continue
-                    }
-                }
-                return Err(err)
-            }
-            ours = Handle::new(handle);
-            break
-        }
-
-        // Connect to the named pipe we just created. This handle is going to be
-        // returned in `theirs`, so if `ours` is readable we want this to be
-        // writable, otherwise if `ours` is writable we want this to be
-        // readable.
-        //
-        // Additionally we don't enable overlapped mode on this because most
-        // client processes aren't enabled to work with that.
-        let mut opts = OpenOptions::new();
-        opts.write(ours_readable);
-        opts.read(!ours_readable);
-        opts.share_mode(0);
-        let theirs = File::open(Path::new(&name), &opts)?;
-        let theirs = AnonPipe { inner: theirs.into_handle() };
-
-        Ok(Pipes {
-            ours: AnonPipe { inner: ours },
-            theirs: AnonPipe { inner: theirs.into_handle() },
-        })
-    }
-}
-
-fn random_number() -> usize {
-    static N: AtomicUsize = ATOMIC_USIZE_INIT;
-    loop {
-        if N.load(SeqCst) != 0 {
-            return N.fetch_add(1, SeqCst)
-        }
-
-        N.store(hashmap_random_keys().0 as usize, SeqCst);
-    }
-}
-
-impl AnonPipe {
-    pub fn handle(&self) -> &Handle { &self.inner }
-    pub fn into_handle(self) -> Handle { self.inner }
-
-    pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
-        self.inner.read(buf)
-    }
-
-    pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
-        self.inner.write(buf)
-    }
-}
-
-pub fn read2(p1: AnonPipe,
-             v1: &mut Vec<u8>,
-             p2: AnonPipe,
-             v2: &mut Vec<u8>) -> io::Result<()> {
-    let p1 = p1.into_handle();
-    let p2 = p2.into_handle();
-
-    let mut p1 = AsyncPipe::new(p1, v1)?;
-    let mut p2 = AsyncPipe::new(p2, v2)?;
-    let objs = [p1.event.raw(), p2.event.raw()];
-
-    // In a loop we wait for either pipe's scheduled read operation to complete.
-    // If the operation completes with 0 bytes, that means EOF was reached, in
-    // which case we just finish out the other pipe entirely.
-    //
-    // Note that overlapped I/O is in general super unsafe because we have to
-    // be careful to ensure that all pointers in play are valid for the entire
-    // duration of the I/O operation (where tons of operations can also fail).
-    // The destructor for `AsyncPipe` ends up taking care of most of this.
-    loop {
-        let res = unsafe {
-            c::WaitForMultipleObjects(2, objs.as_ptr(), c::FALSE, c::INFINITE)
-        };
-        if res == c::WAIT_OBJECT_0 {
-            if !p1.result()? || !p1.schedule_read()? {
-                return p2.finish()
-            }
-        } else if res == c::WAIT_OBJECT_0 + 1 {
-            if !p2.result()? || !p2.schedule_read()? {
-                return p1.finish()
-            }
-        } else {
-            return Err(io::Error::last_os_error())
-        }
-    }
-}
-
-struct AsyncPipe<'a> {
-    pipe: Handle,
-    event: Handle,
-    overlapped: Box<c::OVERLAPPED>, // needs a stable address
-    dst: &'a mut Vec<u8>,
-    state: State,
-}
-
-#[derive(PartialEq, Debug)]
-enum State {
-    NotReading,
-    Reading,
-    Read(usize),
-}
-
-impl<'a> AsyncPipe<'a> {
-    fn new(pipe: Handle, dst: &'a mut Vec<u8>) -> io::Result<AsyncPipe<'a>> {
-        // Create an event which we'll use to coordinate our overlapped
-        // operations, this event will be used in WaitForMultipleObjects
-        // and passed as part of the OVERLAPPED handle.
-        //
-        // Note that we do a somewhat clever thing here by flagging the
-        // event as being manually reset and setting it initially to the
-        // signaled state. This means that we'll naturally fall through the
-        // WaitForMultipleObjects call above for pipes created initially,
-        // and the only time an even will go back to "unset" will be once an
-        // I/O operation is successfully scheduled (what we want).
-        let event = Handle::new_event(true, true)?;
-        let mut overlapped: Box<c::OVERLAPPED> = unsafe {
-            Box::new(mem::zeroed())
-        };
-        overlapped.hEvent = event.raw();
-        Ok(AsyncPipe {
-            pipe,
-            overlapped,
-            event,
-            dst,
-            state: State::NotReading,
-        })
-    }
-
-    /// Executes an overlapped read operation.
-    ///
-    /// Must not currently be reading, and returns whether the pipe is currently
-    /// at EOF or not. If the pipe is not at EOF then `result()` must be called
-    /// to complete the read later on (may block), but if the pipe is at EOF
-    /// then `result()` should not be called as it will just block forever.
-    fn schedule_read(&mut self) -> io::Result<bool> {
-        assert_eq!(self.state, State::NotReading);
-        let amt = unsafe {
-            let slice = slice_to_end(self.dst);
-            self.pipe.read_overlapped(slice, &mut *self.overlapped)?
-        };
-
-        // If this read finished immediately then our overlapped event will
-        // remain signaled (it was signaled coming in here) and we'll progress
-        // down to the method below.
-        //
-        // Otherwise the I/O operation is scheduled and the system set our event
-        // to not signaled, so we flag ourselves into the reading state and move
-        // on.
-        self.state = match amt {
-            Some(0) => return Ok(false),
-            Some(amt) => State::Read(amt),
-            None => State::Reading,
-        };
-        Ok(true)
-    }
-
-    /// Wait for the result of the overlapped operation previously executed.
-    ///
-    /// Takes a parameter `wait` which indicates if this pipe is currently being
-    /// read whether the function should block waiting for the read to complete.
-    ///
-    /// Return values:
-    ///
-    /// * `true` - finished any pending read and the pipe is not at EOF (keep
-    ///            going)
-    /// * `false` - finished any pending read and pipe is at EOF (stop issuing
-    ///             reads)
-    fn result(&mut self) -> io::Result<bool> {
-        let amt = match self.state {
-            State::NotReading => return Ok(true),
-            State::Reading => {
-                self.pipe.overlapped_result(&mut *self.overlapped, true)?
-            }
-            State::Read(amt) => amt,
-        };
-        self.state = State::NotReading;
-        unsafe {
-            let len = self.dst.len();
-            self.dst.set_len(len + amt);
-        }
-        Ok(amt != 0)
-    }
-
-    /// Finishes out reading this pipe entirely.
-    ///
-    /// Waits for any pending and schedule read, and then calls `read_to_end`
-    /// if necessary to read all the remaining information.
-    fn finish(&mut self) -> io::Result<()> {
-        while self.result()? && self.schedule_read()? {
-            // ...
-        }
-        Ok(())
-    }
-}
-
-impl<'a> Drop for AsyncPipe<'a> {
-    fn drop(&mut self) {
-        match self.state {
-            State::Reading => {}
-            _ => return,
-        }
-
-        // If we have a pending read operation, then we have to make sure that
-        // it's *done* before we actually drop this type. The kernel requires
-        // that the `OVERLAPPED` and buffer pointers are valid for the entire
-        // I/O operation.
-        //
-        // To do that, we call `CancelIo` to cancel any pending operation, and
-        // if that succeeds we wait for the overlapped result.
-        //
-        // If anything here fails, there's not really much we can do, so we leak
-        // the buffer/OVERLAPPED pointers to ensure we're at least memory safe.
-        if self.pipe.cancel_io().is_err() || self.result().is_err() {
-            let buf = mem::replace(self.dst, Vec::new());
-            let overlapped = Box::new(unsafe { mem::zeroed() });
-            let overlapped = mem::replace(&mut self.overlapped, overlapped);
-            mem::forget((buf, overlapped));
-        }
-    }
-}
-
-unsafe fn slice_to_end(v: &mut Vec<u8>) -> &mut [u8] {
-    if v.capacity() == 0 {
-        v.reserve(16);
-    }
-    if v.capacity() == v.len() {
-        v.reserve(1);
-    }
-    slice::from_raw_parts_mut(v.as_mut_ptr().offset(v.len() as isize),
-                              v.capacity() - v.len())
-}