Партнёры:
Хостинг:
mqueuefs - POSIX message queue file system
To load as a kernel loadable module:
"kldload mqueuefs"
The most common usage is as follows:
"mount -t mqueuefs null /mnt/mqueue"
where /mnt/mqueue is a mount point.
It is possible to define an entry in /etc/fstab that looks similar to:
null /mnt/mqueue mqueuefs rw 0 0
This will mount at the /mnt/mqueue mount point during system boot. Using /mnt/mqueue as a permanent mount point is not advised as its intention has always been to be a temporary mount point. See hier(7) for more information on Fx directory layout.
Some common tools can be used on the file system, e.g.: cat(1), chmod(1), chown(8), ls(1), rm(1), etc. To use only the message queue system calls, it is not necessary for user to mount the file system, just load the module or compile it into the kernel. Manually creating a file, for example, ``touch /mnt/mqueue/myqueue '' will create a message queue named myqueue in the kernel, default message queue attributes will be applied to the queue. It is not advised to use this method to create a queue; it is better to use the mq_open2 system call to create a queue as it allows the user to specify different attributes.
To see the queue's attributes, just read the file:
"cat /mnt/mqueue/myqueue"
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