centos man page for fcntl_getlease

FCNTL_GETLEASE(9)						   The Linux VFS						 FCNTL_GETLEASE(9)

NAME
       fcntl_getlease - Enquire what lease is currently active

SYNOPSIS
       int fcntl_getlease(struct file * filp);

ARGUMENTS
       filp
	   the file

DESCRIPTION
       The value returned by this function will be one of (if no lease break is pending):

       F_RDLCK to indicate a shared lease is held.

       F_WRLCK to indicate an exclusive lease is held.

       F_UNLCK to indicate no lease is held.

       (if a lease break is pending):

       F_RDLCK to indicate an exclusive lease needs to be changed to a shared lease (or removed).

       F_UNLCK to indicate the lease needs to be removed.

XXX
       sfr & willy disagree over whether F_INPROGRESS should be returned to userspace.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 FCNTL_GETLEASE(9)