From owner-svn-src-all@freebsd.org Tue Dec 22 20:22:18 2015 Return-Path: Delivered-To: svn-src-all@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 EAC1FA4EA56; Tue, 22 Dec 2015 20:22:18 +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 9EBDB1A24; Tue, 22 Dec 2015 20:22:18 +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 tBMKMHss041926; Tue, 22 Dec 2015 20:22:17 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id tBMKMH80041925; Tue, 22 Dec 2015 20:22:17 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201512222022.tBMKMH80041925@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Tue, 22 Dec 2015 20:22:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r292621 - head/sys/fs/devfs X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.20 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: Tue, 22 Dec 2015 20:22:19 -0000 Author: kib Date: Tue Dec 22 20:22:17 2015 New Revision: 292621 URL: https://svnweb.freebsd.org/changeset/base/292621 Log: Keep devfs mount locked for the whole duration of the devfs_setattr(), and ensure that our dirent is instantiated. Reported and tested by: bde Sponsored by: The FreeBSD Foundation MFC after: 1 week Modified: head/sys/fs/devfs/devfs_vnops.c Modified: head/sys/fs/devfs/devfs_vnops.c ============================================================================== --- head/sys/fs/devfs/devfs_vnops.c Tue Dec 22 20:12:52 2015 (r292620) +++ head/sys/fs/devfs/devfs_vnops.c Tue Dec 22 20:22:17 2015 (r292621) @@ -1560,11 +1560,15 @@ 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 @@ -1577,8 +1581,8 @@ 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; @@ -1588,8 +1592,8 @@ 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; @@ -1598,7 +1602,7 @@ 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; @@ -1620,7 +1624,10 @@ 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