[src/netbsd-2-0]: src/sys/miscfs/umapfs Pull up revision 1.28 (requested by y...

[tron <tron%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c1ebac128818
branches:  netbsd-2-0
changeset: 561485:c1ebac128818
user:      tron <tron%NetBSD.org@localhost>
date:      Mon Jun 21 10:13:13 2004 +0000

description:
Pull up revision 1.28 (requested by yamt in ticket #514):
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.

diffstat:

 sys/miscfs/umapfs/umap_vnops.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r c22dbd388137 -r c1ebac128818 sys/miscfs/umapfs/umap_vnops.c
--- a/sys/miscfs/umapfs/umap_vnops.c    Mon Jun 21 10:12:49 2004 +0000
+++ b/sys/miscfs/umapfs/umap_vnops.c    Mon Jun 21 10:13:13 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: umap_vnops.c,v 1.24.2.2 2004/06/21 10:06:49 tron Exp $ */
+/*     $NetBSD: umap_vnops.c,v 1.24.2.3 2004/06/21 10:13:13 tron Exp $ */
 
 /*
  * Copyright (c) 1992, 1993
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: umap_vnops.c,v 1.24.2.2 2004/06/21 10:06:49 tron Exp $");
+__KERNEL_RCSID(0, "$NetBSD: umap_vnops.c,v 1.24.2.3 2004/06/21 10:13:13 tron Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -363,6 +363,7 @@
        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) &&