On Oct 6 10:13, Manuel Wienand wrote: > Hi, > > I noticed that I get a permission denied error when I try to open a message > queue in the same process or > in an other process. > The problem can be reproduced using the code given at: > http://sourceware.org/ml/cygwin/2009-09/msg00629.html
Confirmed. I'll investigate. > Another thing I noticed is that the execute permission won't be set for the > owner of the message queue file. > E.g. in mq_open I set (S_IRWXU | S_IRWXG | S_IRWXO), but when looking at the > created file in the cygwin shell > (located in /dev/mqueue/) the permissions are set to "-rw-rwxrwx". But it > doesn't seem to have any impact on > the permission denied problem, since the execute permission isn't set in any > of the tested versions. The S_IXUSR bit has no meaning for message queues. In Cygwin it's used to signal that the message queue is still being initialized. The initializing process always creates the file with S_IXUSR bit. When the initalization has been finished, it removes the S_IXUSR bit. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple