NAME

       VOP_ADVLOCK — advisory record locking

SYNOPSIS

       #include <sys/param.h>
       #include <sys/vnode.h>
       #include <sys/fcntl.h>
       #include <sys/lockf.h>

       int
       VOP_ADVLOCK(struct vnode *vp, caddr_t id, int op, struct flock *fl, int flags);

DESCRIPTION

       The arguments are:

       vp     The vnode being manipulated.

       id     The id token which is changing the lock.

       op     The operation to perform (see fcntl(2)).

       fl     Description of the lock.

       flags  One of more of the following:

                    F_RDLCK  Shared or read lock.
                    F_UNLCK  Unlock.
                    F_WRLCK  Exclusive or write lock.
                    F_WAIT   Wait until lock is granted.
                    F_FLOCK  Use flock(2) semantics for lock.
                    F_POSIX  Use POSIX semantics for lock.

       This  entry point manipulates advisory record locks on the file.  Most file systems delegate the work for
       this call to lf_advlock().

RETURN VALUES

       Zero is returned on success, otherwise an error is returned.

SEE ALSO

       fcntl(2), flock(2), vnode(9)

AUTHORS

       This manual page was written by Doug Rabson.

Debian                                            June 30, 1999                                   VOP_ADVLOCK(9)