From 51b6882d3e6b7603f89f2317ecf93fd228e22d49 Mon Sep 17 00:00:00 2001 From: kib Date: Mon, 4 Aug 2014 01:10:47 +0000 Subject: [PATCH] MFC r269187: Assert that nullfs vnode has VV_ROOT set whenever lower vnode has. Assert that dotdot lookup on the root vnode is not performed. git-svn-id: svn://svn.freebsd.org/base/stable/10@269493 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- sys/fs/nullfs/null_vnops.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/fs/nullfs/null_vnops.c b/sys/fs/nullfs/null_vnops.c index b8b9e0d6a..481644cf8 100644 --- a/sys/fs/nullfs/null_vnops.c +++ b/sys/fs/nullfs/null_vnops.c @@ -372,6 +372,10 @@ null_lookup(struct vop_lookup_args *ap) */ ldvp = NULLVPTOLOWERVP(dvp); vp = lvp = NULL; + KASSERT((ldvp->v_vflag & VV_ROOT) == 0 || + ((dvp->v_vflag & VV_ROOT) != 0 && (flags & ISDOTDOT) == 0), + ("ldvp %p fl %#x dvp %p fl %#x flags %#x", ldvp, ldvp->v_vflag, + dvp, dvp->v_vflag, flags)); error = VOP_LOOKUP(ldvp, &lvp, cnp); if (error == EJUSTRETURN && (flags & ISLASTCN) && (dvp->v_mount->mnt_flag & MNT_RDONLY) && -- 2.45.0