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VOP_ADVLOCK(9)		 BSD Kernel Developer's	Manual		VOP_ADVLOCK(9)

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.

BSD				 June 30, 1999				   BSD
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | AUTHORS

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