2001-07-10 04:22:14 +00:00
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.\"
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.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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.\" $FreeBSD$
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.\"
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.Dd July 9, 2001
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2001-07-10 04:27:03 +00:00
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.Dt BUF_TIMELOCK 9
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2001-07-10 04:22:14 +00:00
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.Os
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.Sh NAME
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2001-07-10 04:27:03 +00:00
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.Nm BUF_TIMELOCK
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2001-07-11 09:13:12 +00:00
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.Nd "locks a buffer"
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2001-07-10 04:22:14 +00:00
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.Sh SYNOPSIS
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2001-07-11 09:13:12 +00:00
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.In sys/param.h
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2001-12-26 23:14:04 +00:00
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.In sys/systm.h
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.In sys/uio.h
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.In sys/bio.h
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2001-07-11 09:13:12 +00:00
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.In sys/buf.h
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2001-07-10 04:22:14 +00:00
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.Ft int
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2001-07-11 03:51:44 +00:00
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.Fn BUF_TIMELOCK "struct buf *bp" "int locktype" "char *wmesg" "int catch" "int timo"
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2001-07-10 04:22:14 +00:00
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.Sh DESCRIPTION
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The
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2001-07-11 09:13:12 +00:00
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.Fn BUF_TIMELOCK
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function locks the given buffer, and limits the amount of time it
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will sleep to
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.Fa timo
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2001-07-10 04:22:14 +00:00
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and OR's
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.Fa catch
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2001-07-13 08:14:54 +00:00
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into the sleep's priority.
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.Fa wmesg
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is the wmesg used in the sleep.
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.Pp
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Its arguments are:
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2001-07-13 09:09:52 +00:00
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.Bl -tag -width ".Fa locktype"
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.It Fa bp
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The buffer to lock.
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.It Fa locktype
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Flags controlling the type of lock.
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See
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.Xr lockmgr 9
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for details.
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.It Fa wmesg
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2002-01-09 11:43:48 +00:00
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The wmesg used in any sleeps while acquiring the lock.
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.It Fa catch
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2001-07-13 08:14:54 +00:00
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Priority OR'd into the sleep's priority.
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.It Fa timo
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2001-07-10 04:22:14 +00:00
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The timeout for any sleeps encountered during the lock.
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.El
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2001-07-11 09:13:12 +00:00
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.Sh RETURN VALUES
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A value of 0 is returned on success.
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See
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.Xr lockmgr 9
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for details on non-zero return values.
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2001-07-10 04:22:14 +00:00
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.Sh SEE ALSO
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2001-07-11 09:13:12 +00:00
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.Xr buf 9 ,
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.Xr BUF_LOCK 9 ,
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.Xr BUF_UNLOCK 9 ,
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2001-07-10 04:22:14 +00:00
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.Xr lockmgr 9
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.Sh AUTHORS
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2005-06-28 20:15:19 +00:00
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This manual page was written by
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2014-06-26 21:44:30 +00:00
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.An Chad David Aq Mt davidc@acns.ab.ca .
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