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freebsd-dev/share/man/man9/vget.9

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This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
.\" -*- nroff -*-
.\"
.\" Copyright (c) 1996 Doug Rabson
.\"
.\" All rights reserved.
.\"
.\" This program is free software.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
$Id$ -> $FreeBSD$
1999-08-28 00:22:10 +00:00
.\" $FreeBSD$
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
.\"
.Dd July 24, 1996
.Os
Minor mdoc fixes.
1997-03-22 22:47:34 +00:00
.Dt VGET 9
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
.Sh NAME
.Nm vget
.Nd get a vnode from the free list
.Sh SYNOPSIS
mdoc(7) police: Use the new .In macro for #include statements.
2001-10-01 16:09:29 +00:00
.In sys/param.h
.In sys/vnode.h
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
.Ft int
Update function definitions and required include files to reflect the current state of the system. Approved by: alfred
2001-12-26 23:14:04 +00:00
.Fn vget "struct vnode *vp" "int lockflag" "struct thread *td"
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
.Sh DESCRIPTION
Get a vnode from the free list and increment its reference count.
.Bl -tag -width lockflag
Some mdoc(7) fixes: Nuke incorrect usage of .Ar; replace it with .Vt, .Va or .Fa appropriately. The .Ar mdoc(7) specifier should only be used when displaying command line arguments. Approved by: des (mentor)
2003-05-31 14:07:25 +00:00
.It Fa vp
Mark lists as in the rest of section 9 manpages.
2005-01-28 10:48:52 +00:00
The vnode to remove from the free list.
Some mdoc(7) fixes: Nuke incorrect usage of .Ar; replace it with .Vt, .Va or .Fa appropriately. The .Ar mdoc(7) specifier should only be used when displaying command line arguments. Approved by: des (mentor)
2003-05-31 14:07:25 +00:00
.It Fa lockflag
Mark lists as in the rest of section 9 manpages.
2005-01-28 10:48:52 +00:00
If non-zero, the vnode will also be locked.
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
.El
.Pp
Mdoc Janitor: * Fix hard sentence breaks.
2003-10-23 02:22:07 +00:00
When not in use, vnodes are kept on a free list.
The vnodes still
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
reference valid files but may be reused to refer to a new file at any
Mdoc Janitor: * Fix hard sentence breaks.
2003-10-23 02:22:07 +00:00
time.
Often, these vnodes are also held in caches in the system, such
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
as the name cache.
.Pp
When a vnode which is on the free list is used again, for instance if
the vnode was found in the name cache as a result of a call to
.Xr VOP_LOOKUP 9
then the new user must call
mdoc(7) police: Deal with self-xrefs.
2002-12-24 13:41:48 +00:00
.Fn vget
This is the current draft of my filesystem manpages. Some files are incomplete and some are just placeholders but I wanted to try to get something at least into 2.2 on the grounds that what I have is a lot better than nothing. I also wanted to commit something which documents the interfaces in 2.2 before I start updating the documentation for 3.0. This is a definite 2.2 candidate and is also relavent to 2.1 if people still care about that branch.
1997-03-03 18:01:01 +00:00
to increment the reference count and remove it from the free list.
.Sh SEE ALSO
.Xr vnode 9 ,
.Xr vput 9 ,
.Xr vref 9 ,
.Xr vrele 9
.Sh AUTHORS
.Sh AUTHOR -> .Sh AUTHORS according to mdoc specs. Use .An/.Aq.
1998-03-12 07:31:21 +00:00
This man page was written by
.An Doug Rabson .
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