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