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On 06/04/2010 15:15, Christopher Faylor wrote: > On Tue, Apr 06, 2010 at 07:55:19AM -0400, George Barrick wrote: >> What I am suggesting is that the new cygwin.dll has difficulties >> implementing the kind of pipe that octave uses to send its graphing >> commands to gnuplot. The specific details of the pipe that serves as >> an example of this can be seen in the __gnuplot_get_var__.m script >> inside the GNU Octave package. > > Sorry but unless someone can narrow this down to a test case which > does not requier installing gnuplot I don't intend on investigating > this. Here ya go. I took a look at the octave module, and narrowed it down to the equivalent C testcase attached, which appears to reproduce the same failure mode for me: > $ ./tfifo.exe > Got name /tmp/t1150.0 > mkfifo returns 0 (errno 2) > Open for read returns file 0x0 (errno is 13) > > $ ls -lart /tmp/t1150.0 > prw------- 1 DKAdmin None 0 2010-04-06 16:05 /tmp/t1150.0 > > $ errno 13 = EACCES = permission denied. Haven't run through into the DLL to look at why it's failing yet, and am about to go AFK for a while. Possibly-relevant information after the failure: > $ getfacl /tmp/t1150.0 > # file: /tmp/t1150.0 > # owner: DKAdmin > # group: None > user::rw- > group::rw- > other:rw- > mask:rwx > > > $ cacls `cygpath -w /tmp/t1150.0` > F:\cygwin-1.7\tmp\t1150.0.lnk UBIK\DKAdmin:F > BUILTIN\Administrators:F > NT AUTHORITY\SYSTEM:F > > > $ cheers, DaveK
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tfifo.c
Description: Text document
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