NAME

BUF_ISLOCKED — returns the state of the lock linked to the buffer

SYNOPSIS

#include < sys/param.h>
#include < sys/systm.h>
#include < sys/uio.h>
#include < sys/bio.h>
#include < sys/buf.h>

int
BUF_ISLOCKED( struct buf *bp);

DESCRIPTION

The BUF_ISLOCKED() function returns the status of the lock linked to the buffer in relation to curthread.

It can return:

LK_EXCLUSIVE

An exclusive lock is held by curthread.

LK_EXCLOTHER

An exclusive lock is held by someone other than curthread.

LK_SHARED

A shared lock is held.

0

The lock is not held by anyone.

SEE ALSO

lockstatus(9), buf(9), BUF_LOCK(9), BUF_UNLOCK(9), lockmgr(9)

AUTHORS

This manual page was written by Attilio Rao <attilio@FreeBSD.org>.