Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
BUF_ISLOCKED(9)	       FreeBSD Kernel Developer's Manual       BUF_ISLOCKED(9)

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>.

FreeBSD	9.2		       January 22, 2008			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=BUF_ISLOCKED&sektion=9&manpath=FreeBSD+9.2-RELEASE>

home | help