4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/linux/linux-obdo.c
38 * Object Devices Class Driver
39 * These are the only exported functions, they provide some generic
40 * infrastructure for managing object devices
43 #define DEBUG_SUBSYSTEM S_CLASS
46 #include <linux/module.h>
47 #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */
48 #include <lustre/lustre_idl.h>
49 #include <obd_class.h>
51 /*FIXME: Just copy from obdo_from_inode*/
52 void obdo_from_la(struct obdo *dst, const struct lu_attr *la, __u64 valid)
54 obd_flag newvalid = 0;
56 if (valid & LA_ATIME) {
57 dst->o_atime = la->la_atime;
58 newvalid |= OBD_MD_FLATIME;
60 if (valid & LA_MTIME) {
61 dst->o_mtime = la->la_mtime;
62 newvalid |= OBD_MD_FLMTIME;
64 if (valid & LA_CTIME) {
65 dst->o_ctime = la->la_ctime;
66 newvalid |= OBD_MD_FLCTIME;
68 if (valid & LA_SIZE) {
69 dst->o_size = la->la_size;
70 newvalid |= OBD_MD_FLSIZE;
72 if (valid & LA_BLOCKS) { /* allocation of space (x512 bytes) */
73 dst->o_blocks = la->la_blocks;
74 newvalid |= OBD_MD_FLBLOCKS;
76 if (valid & LA_TYPE) {
77 dst->o_mode = (dst->o_mode & S_IALLUGO) |
78 (la->la_mode & S_IFMT);
79 newvalid |= OBD_MD_FLTYPE;
81 if (valid & LA_MODE) {
82 dst->o_mode = (dst->o_mode & S_IFMT) |
83 (la->la_mode & S_IALLUGO);
84 newvalid |= OBD_MD_FLMODE;
87 dst->o_uid = la->la_uid;
88 newvalid |= OBD_MD_FLUID;
91 dst->o_gid = la->la_gid;
92 newvalid |= OBD_MD_FLGID;
94 if (valid & LA_FLAGS) {
95 dst->o_flags = la->la_flags;
96 newvalid |= OBD_MD_FLFLAGS;
98 dst->o_valid |= newvalid;
100 EXPORT_SYMBOL(obdo_from_la);
102 /*FIXME: Just copy from obdo_from_inode*/
103 void la_from_obdo(struct lu_attr *dst, const struct obdo *obdo, obd_flag valid)
107 valid &= obdo->o_valid;
109 if (valid & OBD_MD_FLATIME) {
110 dst->la_atime = obdo->o_atime;
111 newvalid |= LA_ATIME;
113 if (valid & OBD_MD_FLMTIME) {
114 dst->la_mtime = obdo->o_mtime;
115 newvalid |= LA_MTIME;
117 if (valid & OBD_MD_FLCTIME) {
118 dst->la_ctime = obdo->o_ctime;
119 newvalid |= LA_CTIME;
121 if (valid & OBD_MD_FLSIZE) {
122 dst->la_size = obdo->o_size;
125 if (valid & OBD_MD_FLBLOCKS) {
126 dst->la_blocks = obdo->o_blocks;
127 newvalid |= LA_BLOCKS;
129 if (valid & OBD_MD_FLTYPE) {
130 dst->la_mode = (dst->la_mode & S_IALLUGO) |
131 (obdo->o_mode & S_IFMT);
134 if (valid & OBD_MD_FLMODE) {
135 dst->la_mode = (dst->la_mode & S_IFMT) |
136 (obdo->o_mode & S_IALLUGO);
139 if (valid & OBD_MD_FLUID) {
140 dst->la_uid = obdo->o_uid;
143 if (valid & OBD_MD_FLGID) {
144 dst->la_gid = obdo->o_gid;
147 if (valid & OBD_MD_FLFLAGS) {
148 dst->la_flags = obdo->o_flags;
149 newvalid |= LA_FLAGS;
151 dst->la_valid = newvalid;
153 EXPORT_SYMBOL(la_from_obdo);
155 void obdo_refresh_inode(struct inode *dst, const struct obdo *src,
158 valid &= src->o_valid;
160 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
162 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
163 src->o_valid, LTIME_S(dst->i_mtime),
164 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
166 if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime))
167 LTIME_S(dst->i_atime) = src->o_atime;
168 if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime))
169 LTIME_S(dst->i_mtime) = src->o_mtime;
170 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
171 LTIME_S(dst->i_ctime) = src->o_ctime;
172 if (valid & OBD_MD_FLSIZE)
173 i_size_write(dst, src->o_size);
174 /* optimum IO size */
175 if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits))
176 dst->i_blkbits = ffs(src->o_blksize) - 1;
178 if (dst->i_blkbits < PAGE_CACHE_SHIFT)
179 dst->i_blkbits = PAGE_CACHE_SHIFT;
181 /* allocation of space */
182 if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks)
184 * XXX shouldn't overflow be checked here like in
187 dst->i_blocks = src->o_blocks;
189 EXPORT_SYMBOL(obdo_refresh_inode);