xnvfile_lock_ops Struct Reference

Vfile locking operations. More...

Data Fields
int(*	get )(struct xnvfile *vfile)
void(*	put )(struct xnvfile *vfile)

Detailed Description

Vfile locking operations.

This structure describes the operations to be provided for implementing locking support on vfiles. They apply to both snapshot-driven and regular vfiles.

Field Documentation

int(* xnvfile_lock_ops::get) (struct xnvfile *vfile)

This handler should grab the desired lock.

Parameters

vfile

A pointer to the virtual file which needs locking.

Returns

zero should be returned if the call succeeds. Otherwise, a negative error code can be returned; upon error, the current vfile operation is aborted, and the user-space caller is passed back the error value.

void(* xnvfile_lock_ops::put) (struct xnvfile *vfile)

This handler should release the lock previously grabbed by the get() handler.

Parameters

vfile

A pointer to the virtual file which currently holds the lock to release.

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The documentation for this struct was generated from the following file:

• include/nucleus/vfile.h