From owner-dev-commits-src-main@freebsd.org Fri Jan 29 01:25:42 2021 Return-Path: Delivered-To: dev-commits-src-main@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 15B6F4F4C4D; Fri, 29 Jan 2021 01:25:42 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DRfmQ05vqz3KMR; Fri, 29 Jan 2021 01:25:42 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id EA64A1A29D; Fri, 29 Jan 2021 01:25:41 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 10T1PfiK071428; Fri, 29 Jan 2021 01:25:41 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 10T1Pf6n071427; Fri, 29 Jan 2021 01:25:41 GMT (envelope-from git) Date: Fri, 29 Jan 2021 01:25:41 GMT Message-Id: <202101290125.10T1Pf6n071427@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Kyle Evans Subject: git: 0f919ed4ae4d - main - tmpfs: push VEXEC check into tmpfs_lookup() MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kevans X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 0f919ed4ae4df082eefb517afe02752b1790afd3 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-main@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for the main branch of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Jan 2021 01:25:42 -0000 The branch main has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=0f919ed4ae4df082eefb517afe02752b1790afd3 commit 0f919ed4ae4df082eefb517afe02752b1790afd3 Author: Kyle Evans AuthorDate: 2021-01-28 14:27:28 +0000 Commit: Kyle Evans CommitDate: 2021-01-29 01:25:11 +0000 tmpfs: push VEXEC check into tmpfs_lookup() vfs_cache_lookup() has already done the appropriate VEXEC check, therefore we must not re-check in VOP_CACHEDLOOKUP. This fixes O_SEARCH semantics on tmpfs and removes a redundant descent into VOP_ACCESS() in the common case. Reported-by: arichardson (via CheriBSD Jenkins CI) Reviewed-by: kib MFC-after: 3 days Differential Revision: https://reviews.freebsd.org/D28401 --- sys/fs/tmpfs/tmpfs_vnops.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/sys/fs/tmpfs/tmpfs_vnops.c b/sys/fs/tmpfs/tmpfs_vnops.c index 7614287c642e..7be2655dcf0b 100644 --- a/sys/fs/tmpfs/tmpfs_vnops.c +++ b/sys/fs/tmpfs/tmpfs_vnops.c @@ -91,14 +91,10 @@ tmpfs_lookup1(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp) struct tmpfs_mount *tm; int error; + /* Caller assumes responsibility for ensuring access (VEXEC). */ dnode = VP_TO_TMPFS_DIR(dvp); *vpp = NULLVP; - /* Check accessibility of requested node as a first step. */ - error = vn_dir_check_exec(dvp, cnp); - if (error != 0) - goto out; - /* We cannot be requesting the parent directory of the root node. */ MPASS(IMPLIES(dnode->tn_type == VDIR && dnode->tn_dir.tn_parent == dnode, @@ -241,8 +237,17 @@ tmpfs_cached_lookup(struct vop_cachedlookup_args *v) static int tmpfs_lookup(struct vop_lookup_args *v) { + struct vnode *dvp = v->a_dvp; + struct vnode **vpp = v->a_vpp; + struct componentname *cnp = v->a_cnp; + int error; - return (tmpfs_lookup1(v->a_dvp, v->a_vpp, v->a_cnp)); + /* Check accessibility of requested node as a first step. */ + error = vn_dir_check_exec(dvp, cnp); + if (error != 0) + return (error); + + return (tmpfs_lookup1(dvp, vpp, cnp)); } static int