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109 lines
2.9 KiB
Groff
109 lines
2.9 KiB
Groff
.\" -*- nroff -*-
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.\"
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.\" Copyright (c) 1996 Doug Rabson
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.\"
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.\" All rights reserved.
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.\"
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.\" This program is free software.
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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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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $Id: VOP_REMOVE.9,v 1.3 1997/03/07 03:32:29 mpp Exp $
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.\"
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.Dd July 24, 1996
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.Os
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.Dt VOP_REMOVE 9
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.Sh NAME
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.Nm VOP_REMOVE ,
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.Nm VOP_RMDIR
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.Nd remove a file or directory
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.Sh SYNOPSIS
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.Fd #include <sys/param.h>
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.Fd #include <sys/vnode.h>
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.Ft int
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.Fn VOP_REMOVE "struct vnode *dvp" "struct vnode *vp" "struct componentname *cnp"
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.Ft int
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.Fn VOP_RMDIR "struct vnode *dvp" "struct vnode *vp" "struct componentname *cnp"
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.Sh DESCRIPTION
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These entry points remove files and directories respectively.
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.Pp
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The arguments are:
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.Bl -tag -width dvp
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.It Ar dvp
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the vnode of the directory
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.It Ar vp
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the vnode of the file to be removed
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.It Ar cnp
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pathname information about the file
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.El
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.Sh LOCKS
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Both
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.Fa dvp
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and
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.Fa vp
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should be locked on entry and are unlocked and released on exit.
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.Sh RETURN VALUES
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Zero is returned on success, otherwise an error code is returned.
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.Sh PSEUDOCODE
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.Bd -literal
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int
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vop_remove(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
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{
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int error = 0;
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if (vp is immutable) {
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error = EPERM;
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goto out;
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}
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/*
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* Remove name cnp->cn_nameptr from directory and update link count
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* of vp.
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*/
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...;
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/*
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* Careful about trying to remove ".". XXX this should be handled
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* higher up.
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*/
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if (dvp == vp)
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vrele(vp);
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else
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vput(vp);
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vput(dvp);
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return error;
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}
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.Ed
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.Sh ERRORS
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.Bl -tag -width Er
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.It Bq Er EPERM
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the file is immutable
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.It Bq Er ENOTEMPTY
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attempt to remove a directory which is not empty
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.El
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.Sh SEE ALSO
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.Xr vnode 9 ,
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.Xr VOP_LOOKUP 9
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.Sh AUTHORS
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This man page was written by Doug Rabson.
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