"mode" and varios processes sharing the same queue for writting

["Iñaki Baz Castillo" <ibc@aliax.net>]

Hi, I'll have an external process (running as root) which creates a posix_mq 
queue just for read-only. As it runs as root I can set a longer "maxmsg" 
value.

Then I've other processes (Unicor workers) running as non privileged users and 
must write in that queue.

So in the external process I do:

  File.umask(0000)
  MQ = POSIX_MQ.new "/mq", IO::RDONLY | IO::CREAT, 00002

"mode" = 00002 which means "others have write permission" (in combination with 
the modified umask, of course, if not it doesn't work).

Is it the correct approach?


And the other question: Being posix_mq process/thread safe, does it mean that 
I could open the queue writter in the master process so it could be safely 
shared by all the workers? or shall I open the queue writter for each worker?


PS: Thanks a lot for this project, it's exactly what I needed (much better 
than using DRb o UNIXsockets) :)

PPS: Is there any other cool project you are involved in? :)


-- 
Iñaki Baz Castillo <ibc@aliax.net>