suse man page for rpc_mkpipe

RPC_MKPIPE(9)							 Linux Networking						     RPC_MKPIPE(9)

NAME
       rpc_mkpipe - make an rpc_pipefs file for kernel<->userspace communication

SYNOPSIS
       struct dentry * rpc_mkpipe(struct dentry * parent, const char * name, void * private, const struct rpc_pipe_ops * ops, int flags);

ARGUMENTS
       parent
	   dentry of directory to create new "pipe" in

       name
	   name of pipe

       private
	   private data to associate with the pipe, for the caller's use

       ops
	   operations defining the behavior of the pipe: upcall, downcall, release_pipe, open_pipe, and destroy_msg.

       flags
	   rpc_inode flags

DESCRIPTION
       Data is made available for userspace to read by calls to rpc_queue_upcall. The actual reads will result in calls to ops->upcall, which will
       be called with the file pointer, message, and userspace buffer to copy to.

       Writes can come at any time, and do not necessarily have to be responses to upcalls. They will result in calls to msg->downcall.

       The private argument passed here will be available to all these methods from the file pointer, via RPC_I(file->f_dentry->d_inode)->private.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							     RPC_MKPIPE(9)