chmod on named pipes

Christopher Faylor
Sun Dec 26 00:35:00 GMT 2004

On Sat, Dec 25, 2004 at 04:28:36PM -0800, Jeremy Lin wrote:
>I'm trying to get a program running on Cygwin, but this program depends
>on being able to change permissions on a named pipe. chmod doesn't
>actually seem to work for this, but it doesn't return nonzero either.
>From what I can see, the mode argument in the initial mkfifo call is
>respected, but I can't actually change the mode after it's been created.
>Is this a known limitation, or am I missing something? I also tried
>looking at the cygwin dll source to see how chmod is implemented, but
>haven't had much luck finding the right spot as of yet (if it's even in
>that particular package), so any pointers there would be appreciated.

fgrep chmod *.cc

seems to do a wonderful job finding several likely suspects for where
chmod would be implemented.


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