BUF_LOCK(9) MidnightBSD Kernel Developer’s Manual BUF_LOCK(9)

NAME

BUF_LOCK — locks a buffer

SYNOPSIS

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

int

BUF_LOCK(struct buf *bp, int locktype);

DESCRIPTION

The BUF_LOCK() function locks the given buffer. If the lock is already held this call will block until it can acquire the lock unless LK_NOWAIT is set.

Its arguments are:

bp

The buffer to lock.

locktype

Flags controlling the type of lock. See lockmgr(9) for details.

RETURN VALUES

A value of 0 is returned upon success. See lockmgr(9) for information on non-zero return values.

SEE ALSO

buf(9), BUF_TIMELOCK(9), BUF_UNLOCK(9), lockmgr(9)

AUTHORS

This manual page was written by Chad David 〈davidc@acns.ab.ca〉.

MidnightBSD 0.3 July 9, 2001 MidnightBSD 0.3