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 2.6. July 2015 FCNTL_GETLEASE(9)