Provided by: linux-doc-2.6.15_2.6.15-23.39_all bug

NAME
       sys_flock - flock system call.


SYNOPSIS
       long sys_flock  (unsigned int fd, unsigned int cmd);


ARGUMENTS
       fd     the file descriptor to lock.

       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.