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| author | Christopher Faylor <me@cgf.cx> | 2011-10-23 19:01:47 +0000 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2011-10-23 19:01:47 +0000 |
| commit | 31d2bedc585420092eb53895c5f5646651f13215 (patch) | |
| tree | 4e7ab98f866744fb5fd40c22db63a8113226df41 /winsup/cygwin/pipe.cc | |
| parent | 1f012519e4954361e3f5c8ad4eab79cde57a510c (diff) | |
| download | cygnal-31d2bedc585420092eb53895c5f5646651f13215.tar.gz cygnal-31d2bedc585420092eb53895c5f5646651f13215.tar.bz2 cygnal-31d2bedc585420092eb53895c5f5646651f13215.zip | |
* fhandler_tty.cc (fhandler_pty_slave::read): Use consistent way for testing
ReadFile return.
* pipe.cc (fhandler_pipe::create_selectable): Open the write side of the pipe
in message-mode to force writing as "chunks". Explain why.
Diffstat (limited to 'winsup/cygwin/pipe.cc')
| -rw-r--r-- | winsup/cygwin/pipe.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/winsup/cygwin/pipe.cc b/winsup/cygwin/pipe.cc index aa56cf531..99c79121e 100644 --- a/winsup/cygwin/pipe.cc +++ b/winsup/cygwin/pipe.cc @@ -238,9 +238,15 @@ fhandler_pipe::create_selectable (LPSECURITY_ATTRIBUTES sa_ptr, HANDLE& r, It's important to only allow a single instance, to ensure that the pipe was not created earlier by some other process, even if the pid has been reused. We avoid FILE_FLAG_FIRST_PIPE_INSTANCE - because that is only available for Win2k SP2 and WinXP. */ + because that is only available for Win2k SP2 and WinXP. + + Note that the write side of the pipe is opened as PIPE_TYPE_MESSAGE. + This *seems* to more closely mimic Linux pipe behavior and is + definitely required for pty handling since fhandler_pty_master + writes to the pipe in chunks, terminated by newline when CANON mode + is specified. */ r = CreateNamedPipe (pipename, PIPE_ACCESS_INBOUND | overlapped, - PIPE_TYPE_BYTE | PIPE_READMODE_BYTE, 1, psize, + PIPE_TYPE_MESSAGE | PIPE_READMODE_BYTE, 1, psize, psize, NMPWAIT_USE_DEFAULT_WAIT, sa_ptr); if (r != INVALID_HANDLE_VALUE) |