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umap_lookup/layer_lookup: NULL out *ap->a_vpp after calling 

underlying filesystem because some caller including lookup()
assume that *vpp is NULL on error.
This commit is contained in:
yamt 2004-06-11 12:34:13 +00:00
parent e3b58482fb
commit c9817d1a97
2 changed files with 7 additions and 5 deletions
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7
sys/miscfs/genfs/layer_vnops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: layer_vnops.c,v 1.17 2004/06/07 17:36:38 yamt Exp $ */
/* $NetBSD: layer_vnops.c,v 1.18 2004/06/11 12:34:13 yamt Exp $ */
/*
* Copyright (c) 1999 National Aeronautics & Space Administration
@ -67,7 +67,7 @@
*
* Ancestors:
* @(#)lofs_vnops.c 1.2 (Berkeley) 6/18/92
* $Id: layer_vnops.c,v 1.17 2004/06/07 17:36:38 yamt Exp $
* $Id: layer_vnops.c,v 1.18 2004/06/11 12:34:13 yamt Exp $
* ...and...
* @(#)null_vnodeops.c 1.20 92/07/07 UCLA Ficus project
*/
@ -232,7 +232,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: layer_vnops.c,v 1.17 2004/06/07 17:36:38 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: layer_vnops.c,v 1.18 2004/06/11 12:34:13 yamt Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -434,6 +434,7 @@ layer_lookup(v)
ap->a_dvp = ldvp;
error = VCALL(ldvp, ap->a_desc->vdesc_offset, ap);
vp = *ap->a_vpp;
*ap->a_vpp = NULL;
if (error == EJUSTRETURN && (flags & ISLASTCN) &&
(dvp->v_mount->mnt_flag & MNT_RDONLY) &&

5
sys/miscfs/umapfs/umap_vnops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: umap_vnops.c,v 1.27 2004/06/07 17:36:38 yamt Exp $ */
/* $NetBSD: umap_vnops.c,v 1.28 2004/06/11 12:34:13 yamt Exp $ */
/*
* Copyright (c) 1992, 1993
@ -39,7 +39,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: umap_vnops.c,v 1.27 2004/06/07 17:36:38 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: umap_vnops.c,v 1.28 2004/06/11 12:34:13 yamt Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -363,6 +363,7 @@ umap_lookup(v)
ap->a_dvp = ldvp;
error = VCALL(ldvp, ap->a_desc->vdesc_offset, ap);
vp = *ap->a_vpp;
*ap->a_vpp = NULL;
if (error == EJUSTRETURN && (cnf & ISLASTCN) &&
(dvp->v_mount->mnt_flag & MNT_RDONLY) &&