Messages in this thread | | | Date | Mon, 14 Jul 2003 22:16:20 +0200 | From | Manfred Spraul <> | Subject | Re: [RFC][PATCH] Posix Message Queues |
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Hi Michal,
You've implemented mq_open() in user space by combining open()+ioctl() syscalls. I think it's racy:
What if two processes call { fd = mq_open("dummy",O_CREAT,0777,{.mq_maxmsg=10000}); mq_send = mq_send(fd,buf,10000,0); }
I think setting the queue options and creating a new queue must be atomic, i.e. we need a new syscall.
Could you replace the printk's with Dprintk or something like that? User space misbehaviour such as bad pointers should not generate printk messages.
-- Manfred
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