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.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.
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.\" $FreeBSD: head/share/man/man9/BUF_TIMELOCK.9 79504 2001-07-10 04:27:03Z alfred $
.\"
.Dd July 9, 2001
.Dt BUF_TIMELOCK 9
.Os
.Sh NAME
.Nm BUF_TIMELOCK
.Nd "Locks a buffer"
.Sh SYNOPSIS
.Fd #include <sys/buf.h>
.Ft int
.Fo BUF_TIMELOCK
.Fa "struct buf *bp"
.Fa "int locktype"
.Fa "char *wmesg"
.Fa "int catch"
.Fa "int timo"
.Fc
.Sh DESCRIPTION
The
.Nm
function locks the given buffer, and limits the amount of time it
will sleep to
.Ar timo
and OR's
.Ar catch
into the sleep priority.
.Ar wmesg
is the wmesg used in the sleep.
.Pp
Its arguments are:
.Bl -tag -width locktype
.It Ar bp
The buffer to lock.
.It Ar locktype
Flags controlling the type of lock.  See lockmgr(9) for details.
.It Ar wmesg
The wmesg used in any sleeps while aquiring the lock.
.It Ar catch
Priority OR'd into the sleep priority.
.It Ar timo
The timeout for any sleeps encountered during the lock.
.El
.Sh RETURN VALUE
A value of 0 is returned on success.  See lockmgr(9) for
details on non-zero return values.
.Sh SEE ALSO
.Xr buf 9
.Xr lockmgr 9
.Xr BUF_LOCK 9
.Xr BUF_UNLOCK 9
.Sh AUTHORS
This man page was written by Chad David.