| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.gnu.org/licenses/gpl-2.0.html |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/obdclass/obdo.c |
| * |
| * Object Devices Class Driver |
| * These are the only exported functions, they provide some generic |
| * infrastructure for managing object devices |
| */ |
| |
| #define DEBUG_SUBSYSTEM S_CLASS |
| |
| #include <obd_class.h> |
| #include <uapi/linux/lustre/lustre_idl.h> |
| #include <lustre_obdo.h> |
| |
| void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent) |
| { |
| dst->o_parent_oid = fid_oid(parent); |
| dst->o_parent_seq = fid_seq(parent); |
| dst->o_parent_ver = fid_ver(parent); |
| dst->o_valid |= OBD_MD_FLGENER | OBD_MD_FLFID; |
| } |
| EXPORT_SYMBOL(obdo_set_parent_fid); |
| |
| /* WARNING: the file systems must take care not to tinker with |
| * attributes they don't manage (such as blocks). |
| */ |
| void obdo_from_inode(struct obdo *dst, struct inode *src, u32 valid) |
| { |
| u32 newvalid = 0; |
| |
| if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME)) |
| CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n", |
| valid, LTIME_S(src->i_mtime), |
| LTIME_S(src->i_ctime)); |
| |
| if (valid & OBD_MD_FLATIME) { |
| dst->o_atime = LTIME_S(src->i_atime); |
| newvalid |= OBD_MD_FLATIME; |
| } |
| if (valid & OBD_MD_FLMTIME) { |
| dst->o_mtime = LTIME_S(src->i_mtime); |
| newvalid |= OBD_MD_FLMTIME; |
| } |
| if (valid & OBD_MD_FLCTIME) { |
| dst->o_ctime = LTIME_S(src->i_ctime); |
| newvalid |= OBD_MD_FLCTIME; |
| } |
| if (valid & OBD_MD_FLSIZE) { |
| dst->o_size = i_size_read(src); |
| newvalid |= OBD_MD_FLSIZE; |
| } |
| if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */ |
| dst->o_blocks = src->i_blocks; |
| newvalid |= OBD_MD_FLBLOCKS; |
| } |
| if (valid & OBD_MD_FLBLKSZ) { /* optimal block size */ |
| dst->o_blksize = 1 << src->i_blkbits; |
| newvalid |= OBD_MD_FLBLKSZ; |
| } |
| if (valid & OBD_MD_FLTYPE) { |
| dst->o_mode = (dst->o_mode & S_IALLUGO) | |
| (src->i_mode & S_IFMT); |
| newvalid |= OBD_MD_FLTYPE; |
| } |
| if (valid & OBD_MD_FLMODE) { |
| dst->o_mode = (dst->o_mode & S_IFMT) | |
| (src->i_mode & S_IALLUGO); |
| newvalid |= OBD_MD_FLMODE; |
| } |
| if (valid & OBD_MD_FLUID) { |
| dst->o_uid = from_kuid(&init_user_ns, src->i_uid); |
| newvalid |= OBD_MD_FLUID; |
| } |
| if (valid & OBD_MD_FLGID) { |
| dst->o_gid = from_kgid(&init_user_ns, src->i_gid); |
| newvalid |= OBD_MD_FLGID; |
| } |
| if (valid & OBD_MD_FLFLAGS) { |
| dst->o_flags = src->i_flags; |
| newvalid |= OBD_MD_FLFLAGS; |
| } |
| dst->o_valid |= newvalid; |
| } |
| EXPORT_SYMBOL(obdo_from_inode); |
| |
| void obdo_to_ioobj(const struct obdo *oa, struct obd_ioobj *ioobj) |
| { |
| ioobj->ioo_oid = oa->o_oi; |
| if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP))) |
| ostid_set_seq_mdt0(&ioobj->ioo_oid); |
| |
| /* Since 2.4 this does not contain o_mode in the low 16 bits. |
| * Instead, it holds (bd_md_max_brw - 1) for multi-bulk BRW RPCs |
| */ |
| ioobj->ioo_max_brw = 0; |
| } |
| EXPORT_SYMBOL(obdo_to_ioobj); |
| |
| /** |
| * Create an obdo to send over the wire |
| */ |
| void lustre_set_wire_obdo(const struct obd_connect_data *ocd, |
| struct obdo *wobdo, const struct obdo *lobdo) |
| { |
| *wobdo = *lobdo; |
| wobdo->o_flags &= ~OBD_FL_LOCAL_MASK; |
| if (!ocd) |
| return; |
| |
| if (unlikely(!(ocd->ocd_connect_flags & OBD_CONNECT_FID)) && |
| fid_seq_is_echo(ostid_seq(&lobdo->o_oi))) { |
| /* |
| * Currently OBD_FL_OSTID will only be used when 2.4 echo |
| * client communicate with pre-2.4 server |
| */ |
| wobdo->o_oi.oi.oi_id = fid_oid(&lobdo->o_oi.oi_fid); |
| wobdo->o_oi.oi.oi_seq = fid_seq(&lobdo->o_oi.oi_fid); |
| } |
| } |
| EXPORT_SYMBOL(lustre_set_wire_obdo); |
| |
| /** |
| * Create a local obdo from a wire based odbo |
| */ |
| void lustre_get_wire_obdo(const struct obd_connect_data *ocd, |
| struct obdo *lobdo, const struct obdo *wobdo) |
| { |
| u32 local_flags = 0; |
| |
| if (lobdo->o_valid & OBD_MD_FLFLAGS) |
| local_flags = lobdo->o_flags & OBD_FL_LOCAL_MASK; |
| |
| *lobdo = *wobdo; |
| if (local_flags) { |
| lobdo->o_valid |= OBD_MD_FLFLAGS; |
| lobdo->o_flags &= ~OBD_FL_LOCAL_MASK; |
| lobdo->o_flags |= local_flags; |
| } |
| if (!ocd) |
| return; |
| |
| if (unlikely(!(ocd->ocd_connect_flags & OBD_CONNECT_FID)) && |
| fid_seq_is_echo(wobdo->o_oi.oi.oi_seq)) { |
| /* see above */ |
| lobdo->o_oi.oi_fid.f_seq = wobdo->o_oi.oi.oi_seq; |
| lobdo->o_oi.oi_fid.f_oid = wobdo->o_oi.oi.oi_id; |
| lobdo->o_oi.oi_fid.f_ver = 0; |
| } |
| } |
| EXPORT_SYMBOL(lustre_get_wire_obdo); |