From owner-svn-src-stable-10@freebsd.org Tue Dec 29 16:11:45 2015 Return-Path: Delivered-To: svn-src-stable-10@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 38C74A54B08; Tue, 29 Dec 2015 16:11:45 +0000 (UTC) (envelope-from kib@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 E3D0F1574; Tue, 29 Dec 2015 16:11:44 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id tBTGBidE087660; Tue, 29 Dec 2015 16:11:44 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id tBTGBisg087659; Tue, 29 Dec 2015 16:11:44 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201512291611.tBTGBisg087659@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Tue, 29 Dec 2015 16:11:44 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r292875 - stable/10/sys/fs/devfs X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-10@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for only the 10-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Dec 2015 16:11:45 -0000 Author: kib Date: Tue Dec 29 16:11:43 2015 New Revision: 292875 URL: https://svnweb.freebsd.org/changeset/base/292875 Log: MFC r292621: Keep devfs mount locked for the whole duration of the devfs_setattr(), and ensure that our dirent is instantiated. Modified: stable/10/sys/fs/devfs/devfs_vnops.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/fs/devfs/devfs_vnops.c ============================================================================== --- stable/10/sys/fs/devfs/devfs_vnops.c Tue Dec 29 16:09:15 2015 (r292874) +++ stable/10/sys/fs/devfs/devfs_vnops.c Tue Dec 29 16:11:43 2015 (r292875) @@ -1533,11 +1533,15 @@ devfs_setattr(struct vop_setattr_args *a return (EINVAL); } + error = devfs_populate_vp(vp); + if (error != 0) + return (error); + de = vp->v_data; if (vp->v_type == VDIR) de = de->de_dir; - error = c = 0; + c = 0; if (vap->va_uid == (uid_t)VNOVAL) uid = de->de_uid; else @@ -1550,8 +1554,8 @@ devfs_setattr(struct vop_setattr_args *a if ((ap->a_cred->cr_uid != de->de_uid) || uid != de->de_uid || (gid != de->de_gid && !groupmember(gid, ap->a_cred))) { error = priv_check(td, PRIV_VFS_CHOWN); - if (error) - return (error); + if (error != 0) + goto ret; } de->de_uid = uid; de->de_gid = gid; @@ -1561,8 +1565,8 @@ devfs_setattr(struct vop_setattr_args *a if (vap->va_mode != (mode_t)VNOVAL) { if (ap->a_cred->cr_uid != de->de_uid) { error = priv_check(td, PRIV_VFS_ADMIN); - if (error) - return (error); + if (error != 0) + goto ret; } de->de_mode = vap->va_mode; c = 1; @@ -1571,7 +1575,7 @@ devfs_setattr(struct vop_setattr_args *a if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) { error = vn_utimes_perm(vp, vap, ap->a_cred, td); if (error != 0) - return (error); + goto ret; if (vap->va_atime.tv_sec != VNOVAL) { if (vp->v_type == VCHR) vp->v_rdev->si_atime = vap->va_atime; @@ -1593,7 +1597,10 @@ devfs_setattr(struct vop_setattr_args *a else vfs_timestamp(&de->de_mtime); } - return (0); + +ret: + sx_xunlock(&VFSTODEVFS(vp->v_mount)->dm_lock); + return (error); } #ifdef MAC