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* B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work
@ 1999-09-24  4:27 J.A. Bezemer
  1999-09-24  4:42 ` Chris Faylor
  1999-09-30 23:42 ` J.A. Bezemer
  0 siblings, 2 replies; 4+ messages in thread
From: J.A. Bezemer @ 1999-09-24  4:27 UTC (permalink / raw)
  To: cygwin; +Cc: Stipe Tolj

Hi!

I tried to compile/run rsync (sources from
http://www.student.uni-koeln.de/cygwin/Distribution/Source/rsync/ ) under
Win95/Cygwin B20.1. Compiles allright, but doesn't run. Under 98 it runs
perfectly well, so I suspect this problem is somewhere in Win95. It would be
very nice if cygwin could do a workaround.

The problem is this: in do_recv() in rsync's main.c there's this structure:

	f_in is filedescriptor of a socket connected to the rsync server

        fork
           child does read(f_in)

        parent does write(f_in)

Parent's write() is okay, but childs read() doesn't receive anything, and the
child process just waits forever.

I don't know if this affects only sockets, or all filedescriptors.

In the mean time, for my specific situation I could remove the fork
completely, and simply run the child after the parent. This works
perfectly.

I don't have time to go into more detail, but just ask if you need to know
more. In case you're interested, My hacked version of rsync is at
http://panic.et.tudelft.nl/~costar/pseudo-image-kit ("Windows version").

And BTW, set CYGWIN=binmode, otherwise rsync goes all wrong...

Regards,
  Anne Bezemer


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^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work
  1999-09-24  4:27 B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work J.A. Bezemer
@ 1999-09-24  4:42 ` Chris Faylor
  1999-09-30 23:42   ` Chris Faylor
  1999-09-30 23:42 ` J.A. Bezemer
  1 sibling, 1 reply; 4+ messages in thread
From: Chris Faylor @ 1999-09-24  4:42 UTC (permalink / raw)
  To: J.A. Bezemer; +Cc: cygwin

On Fri, Sep 24, 1999 at 01:26:04PM +0200, J.A. Bezemer wrote:
>I tried to compile/run rsync (sources from
> http://www.student.uni-koeln.de/cygwin/Distribution/Source/rsync/ ) under
>Win95/Cygwin B20.1. Compiles allright, but doesn't run. Under 98 it runs
>perfectly well, so I suspect this problem is somewhere in Win95. It would be
>very nice if cygwin could do a workaround.

Patches gratefully accepted.

-Chris Faylor
-Win32 Manager
-Cygnus Solutions

>The problem is this: in do_recv() in rsync's main.c there's this structure:
>
>	f_in is filedescriptor of a socket connected to the rsync server
>
>        fork
>           child does read(f_in)
>
>        parent does write(f_in)
>
>Parent's write() is okay, but childs read() doesn't receive anything, and the
>child process just waits forever.
>
>I don't know if this affects only sockets, or all filedescriptors.
>
>In the mean time, for my specific situation I could remove the fork
>completely, and simply run the child after the parent. This works
>perfectly.
>
>I don't have time to go into more detail, but just ask if you need to know
>more. In case you're interested, My hacked version of rsync is at
> http://panic.et.tudelft.nl/~costar/pseudo-image-kit ("Windows version").
>
>And BTW, set CYGWIN=binmode, otherwise rsync goes all wrong...
>
>Regards,
>  Anne Bezemer

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^ permalink raw reply	[flat|nested] 4+ messages in thread

* B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work
  1999-09-24  4:27 B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work J.A. Bezemer
  1999-09-24  4:42 ` Chris Faylor
@ 1999-09-30 23:42 ` J.A. Bezemer
  1 sibling, 0 replies; 4+ messages in thread
From: J.A. Bezemer @ 1999-09-30 23:42 UTC (permalink / raw)
  To: cygwin; +Cc: Stipe Tolj

Hi!

I tried to compile/run rsync (sources from
http://www.student.uni-koeln.de/cygwin/Distribution/Source/rsync/ ) under
Win95/Cygwin B20.1. Compiles allright, but doesn't run. Under 98 it runs
perfectly well, so I suspect this problem is somewhere in Win95. It would be
very nice if cygwin could do a workaround.

The problem is this: in do_recv() in rsync's main.c there's this structure:

	f_in is filedescriptor of a socket connected to the rsync server

        fork
           child does read(f_in)

        parent does write(f_in)

Parent's write() is okay, but childs read() doesn't receive anything, and the
child process just waits forever.

I don't know if this affects only sockets, or all filedescriptors.

In the mean time, for my specific situation I could remove the fork
completely, and simply run the child after the parent. This works
perfectly.

I don't have time to go into more detail, but just ask if you need to know
more. In case you're interested, My hacked version of rsync is at
http://panic.et.tudelft.nl/~costar/pseudo-image-kit ("Windows version").

And BTW, set CYGWIN=binmode, otherwise rsync goes all wrong...

Regards,
  Anne Bezemer


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^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work
  1999-09-24  4:42 ` Chris Faylor
@ 1999-09-30 23:42   ` Chris Faylor
  0 siblings, 0 replies; 4+ messages in thread
From: Chris Faylor @ 1999-09-30 23:42 UTC (permalink / raw)
  To: J.A. Bezemer; +Cc: cygwin

On Fri, Sep 24, 1999 at 01:26:04PM +0200, J.A. Bezemer wrote:
>I tried to compile/run rsync (sources from
> http://www.student.uni-koeln.de/cygwin/Distribution/Source/rsync/ ) under
>Win95/Cygwin B20.1. Compiles allright, but doesn't run. Under 98 it runs
>perfectly well, so I suspect this problem is somewhere in Win95. It would be
>very nice if cygwin could do a workaround.

Patches gratefully accepted.

-Chris Faylor
-Win32 Manager
-Cygnus Solutions

>The problem is this: in do_recv() in rsync's main.c there's this structure:
>
>	f_in is filedescriptor of a socket connected to the rsync server
>
>        fork
>           child does read(f_in)
>
>        parent does write(f_in)
>
>Parent's write() is okay, but childs read() doesn't receive anything, and the
>child process just waits forever.
>
>I don't know if this affects only sockets, or all filedescriptors.
>
>In the mean time, for my specific situation I could remove the fork
>completely, and simply run the child after the parent. This works
>perfectly.
>
>I don't have time to go into more detail, but just ask if you need to know
>more. In case you're interested, My hacked version of rsync is at
> http://panic.et.tudelft.nl/~costar/pseudo-image-kit ("Windows version").
>
>And BTW, set CYGWIN=binmode, otherwise rsync goes all wrong...
>
>Regards,
>  Anne Bezemer

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^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~1999-09-30 23:42 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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1999-09-24  4:27 B20.1 & Win95 fork/socket bug, or Why Rsync Doesn't Work J.A. Bezemer
1999-09-24  4:42 ` Chris Faylor
1999-09-30 23:42   ` Chris Faylor
1999-09-30 23:42 ` J.A. Bezemer

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