Re: Cygwin1.dll 1.7.0-5x: RSYNC failures in close() system call on pipe file descriptors

[cygwin <karl at sipxx dot com>]

After updating 2 other systems to cygwin 1.7, I find that they also work 
fine in the same test.
However, that doesn't help much debugging this.

I found that the problem on the failing system is related to using Unix 
domain sockets for the IPC pipes.
If I replace the socketpair() call  in fd_pair() in file util.c with 
pipe(), everything works fine.

int fd_pair(int fd[2])
{
       int ret;

//#ifdef HAVE_SOCKETPAIR
//      ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
//#else
       ret = pipe(fd);
//#endif

       if (ret == 0) {
               set_nonblocking(fd[0]);
               set_nonblocking(fd[1]);
       }

       return ret;
}

The fact that cygwin 1.5 works fine on this system indicates that 
something is going wrong in 1.7 cygwin1.dll triggered by some conditions 
on this particular system.




Corinna Vinschen wrote:
> On Aug 13 13:17, cygwin wrote:
>   
> > The RSYNC application fails in close() on the pipe streams to and from  
> > child processes created when rsync starts.
> > When running rsync.exe and cygwin1.dll from cygwin 1.5 within the 1.7  
> > installation on the same system (WinXP pro),
> > the identical invocation completes without errors.
> >
> > The problems appears to be a bug in the cygwin.dll
> >
> > For example,
> >
> > $ rsync -a /etc /test
> >
> > produces the following messages:
> >
> > rsync: Failed to dup/close: Socket operation on non-socket (108)
> > rsync error: error in IPC code (code 14) at pipe.c(147) [receiver=3.0.5]
> > rsync: read error: Connection reset by peer (104)
> > rsync error: error in IPC code (code 14) at io.c(759) [sender=3.0.5]
> >     
>
> I tested the exact above command with cygwin 1.7-0-58 and rsync-3.0.5-1
> on Windows 7, WIndows Server 2008 SP2, as well as on XP SP3.
>
> Works fine for me on all three systems.
>
>
> Corinna
>
>   


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