1RPC_MKPIPE(9) Linux Networking RPC_MKPIPE(9)
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6 rpc_mkpipe - make an rpc_pipefs file for kernel<->userspace
7 communication
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10 struct dentry * rpc_mkpipe(struct dentry * parent, const char * name,
11 void * private,
12 const struct rpc_pipe_ops * ops, int flags);
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15 parent
16 dentry of directory to create new “pipe” in
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18 name
19 name of pipe
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21 private
22 private data to associate with the pipe, for the caller´s use
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24 ops
25 operations defining the behavior of the pipe: upcall, downcall,
26 release_pipe, open_pipe, and destroy_msg.
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28 flags
29 rpc_inode flags
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32 Data is made available for userspace to read by calls to
33 rpc_queue_upcall. The actual reads will result in calls to ops->upcall,
34 which will be called with the file pointer, message, and userspace
35 buffer to copy to.
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37 Writes can come at any time, and do not necessarily have to be
38 responses to upcalls. They will result in calls to msg->downcall.
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40 The private argument passed here will be available to all these methods
41 from the file pointer, via RPC_I(file->f_dentry->d_inode)->private.
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44Kernel Hackers Manual 2.6. June 2019 RPC_MKPIPE(9)