NAME
SYSCALL_DEFINE2 - flock system call.
SYNOPSIS
SYSCALL_DEFINE2(flock, unsigned int, fd, unsigned int, cmd);
ARGUMENTS
flock
-- undescribed --
int
-- undescribed --
fd
the file descriptor to lock.
int
-- undescribed --
cmd
the type of lock to apply.
DESCRIPTION
Apply a FL_FLOCK style lock to an open file descriptor. The cmd can be one of
LOCK_SH -- a shared lock.
LOCK_EX -- an exclusive lock.
LOCK_UN -- remove an existing lock.
LOCK_MAND -- a `mandatory´ flock. This exists to emulate Windows Share Modes.
LOCK_MAND can be combined with LOCK_READ or LOCK_WRITE to allow other processes read and write access respectively.