Kernel user communication mechanism

[rohan puri]

Hello Guys,

I want to implement a kernel-user communication mechanism in which kernel
can send events to user space (both blocking and non-blocking). Blocking
events would require response which the kernel will interpret. Also
user-space can also send the events to the kernel and get the response.

Was having a look at the netlink sockets. What will be the behaviour for
sending an event which is blocking on the response from user-space the
queue is full. How this case will be handled.

Also fanotify makes use of fsnotify's notification mechanism to send events
and get response from kernel. Is it possible to send event from user-space
to kernel space in -case of fanotify.

I there any other way present which is better than these two above ways.

Any ideas to implement a new mechanism are also appreciated.

Regards,
Rohan Puri
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