Mail Archives: cygwin/2012/03/09/10:48:55
On Thu, Mar 08, 2012 at 10:55:35AM +0100, Corinna Vinschen wrote:
>On Mar 8 09:50, Denis Excoffier wrote:
>> On Wed, Mar 07, 2012 at 06:47:49PM +0100, Corinna Vinschen wrote:
>> >> Hi Denis,
>> >>
>> >> can you please test this again using the latest developer snapshot or
>> >> the current from CVS if you build Cygwin by yourself? It provides a bit
>> >> more information to find the reason for the permission denied error in
>> >> _pinfo::dup_proc_pipe.
>> Thank you cgf (the committer and snapshot maker at least).
>> >>
>> >> In theory, the user should have permissions to duplicate handles into
>> >> every own process, if the handle has been opened with these permissions,
>> >> so it's quite interesting to find the reason.
>> >>
>>
>> After about 3 hours of exercising the new snapshot (and shaking it a
>> little), i met the "something failed" instance only twice:
>>
>> 1 [main] tcsh 7648! _pinfo::dup_proc_pipe: (child_info_spawn::worker) process synchronization failed for pid 7648/0x754, wr_proc_pipe 0x0 vs. 0x764: DuplicateHandle winerr 5, WFSO returned 258, Win32 error 5
>> 503 [main] tcsh 6148! _pinfo::dup_proc_pipe: (child_info_spawn::worker) process synchronization failed for pid 6148/0x758, wr_proc_pipe 0x0 vs. 0x768: DuplicateHandle winerr 5, WFSO returned 258, Win32 error 5
>>
>> I continue, of course.
>
>Thanks, I don't think it's necessary to try further. What this shows is
>that the process handle returned by the call to CreateProcess sometimes,
>for some reason, does not allow handle duplication. That's weird.
I have a vague idea about why this is happening. I'll look into it within
the next 48 hours.
cgf
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