From owner-svn-src-all@FreeBSD.ORG Mon Jun 20 22:02:01 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E945D1065674; Mon, 20 Jun 2011 22:02:01 +0000 (UTC) (envelope-from rmacklem@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id D97048FC24; Mon, 20 Jun 2011 22:02:01 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id p5KM21jF067600; Mon, 20 Jun 2011 22:02:01 GMT (envelope-from rmacklem@svn.freebsd.org) Received: (from rmacklem@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id p5KM21ou067598; Mon, 20 Jun 2011 22:02:01 GMT (envelope-from rmacklem@svn.freebsd.org) Message-Id: <201106202202.p5KM21ou067598@svn.freebsd.org> From: Rick Macklem Date: Mon, 20 Jun 2011 22:02:01 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r223349 - head/sys/fs/nfsserver X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Jun 2011 22:02:02 -0000 Author: rmacklem Date: Mon Jun 20 22:02:01 2011 New Revision: 223349 URL: http://svn.freebsd.org/changeset/base/223349 Log: Fix the new NFSv4 server so that it only allows Lookup of directories and symbolic links when traversing non-exported file systems. Found during the recent NFSv4 interoperability Bakeathon. MFC after: 2 weeks Modified: head/sys/fs/nfsserver/nfs_nfsdserv.c Modified: head/sys/fs/nfsserver/nfs_nfsdserv.c ============================================================================== --- head/sys/fs/nfsserver/nfs_nfsdserv.c Mon Jun 20 21:57:26 2011 (r223348) +++ head/sys/fs/nfsserver/nfs_nfsdserv.c Mon Jun 20 22:02:01 2011 (r223349) @@ -454,7 +454,7 @@ nfsmout: APPLESTATIC int nfsrvd_lookup(struct nfsrv_descript *nd, __unused int isdgram, vnode_t dp, vnode_t *vpp, fhandle_t *fhp, NFSPROC_T *p, - __unused struct nfsexstuff *exp) + struct nfsexstuff *exp) { struct nameidata named; vnode_t vp, dirp = NULL; @@ -508,7 +508,15 @@ nfsrvd_lookup(struct nfsrv_descript *nd, vrele(named.ni_startdir); nfsvno_relpathbuf(&named); vp = named.ni_vp; - nd->nd_repstat = nfsvno_getfh(vp, fhp, p); + if ((nd->nd_flag & ND_NFSV4) != 0 && !NFSVNO_EXPORTED(exp) && + vp->v_type != VDIR && vp->v_type != VLNK) + /* + * Only allow lookup of VDIR and VLNK for traversal of + * non-exported volumes during NFSv4 mounting. + */ + nd->nd_repstat = ENOENT; + if (nd->nd_repstat == 0) + nd->nd_repstat = nfsvno_getfh(vp, fhp, p); if (!(nd->nd_flag & ND_NFSV4) && !nd->nd_repstat) nd->nd_repstat = nfsvno_getattr(vp, &nva, nd->nd_cred, p, 1); if (vpp != NULL && nd->nd_repstat == 0)