dup error of rsync 3.0.6-1 under cygwin 1.7.0-62 and 63

[Eliot Moss]

Eliot Moss wrote:
> I have used earlier rsync on cygwin successfully for a
> long. I have now moved to cygwin 1.7.0, which required
> moving to rsync 3.0.6-1 at the same time. (The -1 is
> for minor cygwin-specific patches.)
> 
> When I do almost any command with rsync, such as the one
> below, it breaks at a dup2 after a fork in pipe.c (routine
> piped_child). Windows gives error code 6, which is translated
> by cygwin to errno 9 = EBADF, and rsync then terminates.
> 
> rsync -avzuP foo roc:talks/
> 
> Even
> 
> rsync -r .
> 
> fails the same way, though it does not need a network
> connection.
> 
> Steven Monai suggests that the problem may be a mismatch
> in protocol (30 versus 29), though I think the last command
> scuttles that possibility. I think it has something to do
> with cygwin, since cygwin 1.5 seemed ok, but it could be
> a combination of changes un rsync and cygwin ...

Thought I'd give the rsync HEAD a try on this, since it
does include changes in the I/O part of the world. It fails
in exactly the same way ... (but in io.c, of course).

Cheers -- Eliot