From owner-svn-src-stable-9@freebsd.org Wed Jul 13 09:37:52 2016 Return-Path: Delivered-To: svn-src-stable-9@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2365BB9704C; Wed, 13 Jul 2016 09:37:52 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D0B991D70; Wed, 13 Jul 2016 09:37:51 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u6D9bpIh092330; Wed, 13 Jul 2016 09:37:51 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u6D9bp1f092329; Wed, 13 Jul 2016 09:37:51 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201607130937.u6D9bp1f092329@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Wed, 13 Jul 2016 09:37:51 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r302734 - stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-9@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: SVN commit messages for only the 9-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Jul 2016 09:37:52 -0000 Author: avg Date: Wed Jul 13 09:37:50 2016 New Revision: 302734 URL: https://svnweb.freebsd.org/changeset/base/302734 Log: MFC r299906,301870: add zfs_vptocnp with special handling for snapshots under .zfs Note that the change is adjusted for the lack of LK_VNHELD in this branch. Modified: stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/cddl/contrib/opensolaris/ (props changed) Modified: stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c ============================================================================== --- stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Wed Jul 13 09:36:46 2016 (r302733) +++ stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Wed Jul 13 09:37:50 2016 (r302734) @@ -7036,6 +7036,53 @@ zfs_freebsd_aclcheck(ap) return (EOPNOTSUPP); } +static int +zfs_vptocnp(struct vop_vptocnp_args *ap) +{ + vnode_t *covered_vp; + vnode_t *vp = ap->a_vp;; + zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data; + znode_t *zp = VTOZ(vp); + uint64_t parent; + int ltype; + int error; + + ZFS_ENTER(zfsvfs); + ZFS_VERIFY_ZP(zp); + + /* + * If we are a snapshot mounted under .zfs, run the operation + * on the covered vnode. + */ + if ((error = sa_lookup(zp->z_sa_hdl, + SA_ZPL_PARENT(zfsvfs), &parent, sizeof (parent))) != 0) { + ZFS_EXIT(zfsvfs); + return (error); + } + + if (zp->z_id != parent || zfsvfs->z_parent == zfsvfs) { + ZFS_EXIT(zfsvfs); + return (vop_stdvptocnp(ap)); + } + ZFS_EXIT(zfsvfs); + + covered_vp = vp->v_mount->mnt_vnodecovered; + vhold(covered_vp); + ltype = VOP_ISLOCKED(vp); + VOP_UNLOCK(vp, 0); + error = vget(covered_vp, LK_EXCLUSIVE, curthread); + vdrop(covered_vp); + if (error == 0) { + error = VOP_VPTOCNP(covered_vp, ap->a_vpp, ap->a_cred, + ap->a_buf, ap->a_buflen); + vput(covered_vp); + } + vn_lock(vp, ltype | LK_RETRY); + if ((vp->v_iflag & VI_DOOMED) != 0) + error = SET_ERROR(ENOENT); + return (error); +} + struct vop_vector zfs_vnodeops; struct vop_vector zfs_fifoops; struct vop_vector zfs_shareops; @@ -7081,6 +7128,7 @@ struct vop_vector zfs_vnodeops = { .vop_aclcheck = zfs_freebsd_aclcheck, .vop_getpages = zfs_freebsd_getpages, .vop_putpages = zfs_freebsd_putpages, + .vop_vptocnp = zfs_vptocnp, }; struct vop_vector zfs_fifoops = {