On 03/06/2016 01:16 PM, Brian Bloniarz wrote: > OpenSSH expects the (non-blocking) read() of pty master to return > EAGAIN only if it has received all of the slave-side output after > it has received SIGCHLD. This used to work on pre-3.12 kernels. > > This fix effectively forces non-blocking read() and poll() to > block for parallel i/o to complete for all ttys. It also unwinds > these changes: > > 1) f8747d4a466ab2cafe56112c51b3379f9fdb7a12 > tty: Fix pty master read() after slave closes > > 2) 52bce7f8d4fc633c9a9d0646eef58ba6ae9a3b73 > pty, n_tty: Simplify input processing on final close > > 3) 1a48632ffed61352a7810ce089dc5a8bcd505a60 > pty: Fix input race when closing
Reviewed-by: Peter Hurley <pe...@hurleysoftware.com>
