Date: Sun, 20 Mar 2016 20:31:30 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r297083 - stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201603202031.u2KKVUnQ063025@repo.freebsd.org>
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Author: mav Date: Sun Mar 20 20:31:30 2016 New Revision: 297083 URL: https://svnweb.freebsd.org/changeset/base/297083 Log: MFC r262990: MFV r262983: 4638 Panic in ZFS via rfs3_setattr()/rfs3_write(): dirtying snapshot! illumos/illumos-gate@2144b121c08e0eb676cc6ca4662ebbc9f9c22fe3 Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Sun Mar 20 20:27:52 2016 (r297082) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c Sun Mar 20 20:31:30 2016 (r297083) @@ -21,7 +21,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012, 2015 by Delphix. All rights reserved. - * Copyright 2013 Nexenta Systems, Inc. All rights reserved. + * Copyright 2014 Nexenta Systems, Inc. All rights reserved. */ /* Portions Copyright 2007 Jeremy Teo */ @@ -894,6 +894,16 @@ zfs_write(vnode_t *vp, uio_t *uio, int i &zp->z_pflags, 8); /* + * In a case vp->v_vfsp != zp->z_zfsvfs->z_vfs (e.g. snapshots) our + * callers might not be able to detect properly that we are read-only, + * so check it explicitly here. + */ + if (zfsvfs->z_vfs->vfs_flag & VFS_RDONLY) { + ZFS_EXIT(zfsvfs); + return (SET_ERROR(EROFS)); + } + + /* * If immutable or not appending then return EPERM */ if ((zp->z_pflags & (ZFS_IMMUTABLE | ZFS_READONLY)) || @@ -5176,6 +5186,16 @@ zfs_space(vnode_t *vp, int cmd, flock64_ return (SET_ERROR(EINVAL)); } + /* + * In a case vp->v_vfsp != zp->z_zfsvfs->z_vfs (e.g. snapshots) our + * callers might not be able to detect properly that we are read-only, + * so check it explicitly here. + */ + if (zfsvfs->z_vfs->vfs_flag & VFS_RDONLY) { + ZFS_EXIT(zfsvfs); + return (SET_ERROR(EROFS)); + } + if (error = convoff(vp, bfp, 0, offset)) { ZFS_EXIT(zfsvfs); return (error);
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