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.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
34 * lustre/obdclass/linux/linux-obdo.c
36 * Object Devices Class Driver
37 * These are the only exported functions, they provide some generic
38 * infrastructure for managing object devices
41 #define DEBUG_SUBSYSTEM S_CLASS
43 # define EXPORT_SYMTAB
47 #include <liblustre.h>
49 #include <linux/module.h>
50 #include <obd_class.h>
51 #include <lustre/lustre_idl.h>
56 #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */
58 /*FIXME: Just copy from obdo_from_inode*/
59 void obdo_from_la(struct obdo *dst, struct lu_attr *la, __u64 valid)
61 obd_flag newvalid = 0;
63 if (valid & LA_ATIME) {
64 dst->o_atime = la->la_atime;
65 newvalid |= OBD_MD_FLATIME;
67 if (valid & LA_MTIME) {
68 dst->o_mtime = la->la_mtime;
69 newvalid |= OBD_MD_FLMTIME;
71 if (valid & LA_CTIME) {
72 dst->o_ctime = la->la_ctime;
73 newvalid |= OBD_MD_FLCTIME;
75 if (valid & LA_SIZE) {
76 dst->o_size = la->la_size;
77 newvalid |= OBD_MD_FLSIZE;
79 if (valid & LA_BLOCKS) { /* allocation of space (x512 bytes) */
80 dst->o_blocks = la->la_blocks;
81 newvalid |= OBD_MD_FLBLOCKS;
83 if (valid & LA_TYPE) {
84 dst->o_mode = (dst->o_mode & S_IALLUGO) |
85 (la->la_mode & S_IFMT);
86 newvalid |= OBD_MD_FLTYPE;
88 if (valid & LA_MODE) {
89 dst->o_mode = (dst->o_mode & S_IFMT) |
90 (la->la_mode & S_IALLUGO);
91 newvalid |= OBD_MD_FLMODE;
94 dst->o_uid = la->la_uid;
95 newvalid |= OBD_MD_FLUID;
98 dst->o_gid = la->la_gid;
99 newvalid |= OBD_MD_FLGID;
101 dst->o_valid |= newvalid;
103 EXPORT_SYMBOL(obdo_from_la);
105 /*FIXME: Just copy from obdo_from_inode*/
106 void la_from_obdo(struct lu_attr *dst, struct obdo *obdo, obd_flag valid)
110 valid &= obdo->o_valid;
112 if (valid & OBD_MD_FLATIME) {
113 dst->la_atime = obdo->o_atime;
114 newvalid |= LA_ATIME;
116 if (valid & OBD_MD_FLMTIME) {
117 dst->la_mtime = obdo->o_mtime;
118 newvalid |= LA_MTIME;
120 if (valid & OBD_MD_FLCTIME) {
121 dst->la_ctime = obdo->o_ctime;
122 newvalid |= LA_CTIME;
124 if (valid & OBD_MD_FLSIZE) {
125 dst->la_size = obdo->o_size;
128 if (valid & OBD_MD_FLBLOCKS) {
129 dst->la_blocks = obdo->o_blocks;
130 newvalid |= LA_BLOCKS;
132 if (valid & OBD_MD_FLTYPE) {
133 dst->la_mode = (dst->la_mode & S_IALLUGO) |
134 (obdo->o_mode & S_IFMT);
137 if (valid & OBD_MD_FLMODE) {
138 dst->la_mode = (dst->la_mode & S_IFMT) |
139 (obdo->o_mode & S_IALLUGO);
142 if (valid & OBD_MD_FLUID) {
143 dst->la_uid = obdo->o_uid;
146 if (valid & OBD_MD_FLGID) {
147 dst->la_gid = obdo->o_gid;
150 dst->la_valid = newvalid;
152 EXPORT_SYMBOL(la_from_obdo);
154 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid)
156 valid &= src->o_valid;
158 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
160 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
161 src->o_valid, LTIME_S(dst->i_mtime),
162 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
164 if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime))
165 LTIME_S(dst->i_atime) = src->o_atime;
166 if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime))
167 LTIME_S(dst->i_mtime) = src->o_mtime;
168 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
169 LTIME_S(dst->i_ctime) = src->o_ctime;
170 if (valid & OBD_MD_FLSIZE)
171 i_size_write(dst, src->o_size);
172 /* optimum IO size */
173 if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits)) {
174 dst->i_blkbits = cfs_ffs(src->o_blksize) - 1;
175 #ifdef HAVE_INODE_BLKSIZE
176 dst->i_blksize = src->o_blksize;
180 if (dst->i_blkbits < CFS_PAGE_SHIFT) {
181 #ifdef HAVE_INODE_BLKSIZE
182 dst->i_blksize = CFS_PAGE_SIZE;
184 dst->i_blkbits = CFS_PAGE_SHIFT;
187 /* allocation of space */
188 if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks)
190 * XXX shouldn't overflow be checked here like in
193 dst->i_blocks = src->o_blocks;
195 EXPORT_SYMBOL(obdo_refresh_inode);
197 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
199 valid &= src->o_valid;
201 LASSERTF(!(valid & (OBD_MD_FLTYPE | OBD_MD_FLGENER | OBD_MD_FLFID |
202 OBD_MD_FLID | OBD_MD_FLGROUP)),
203 "object "LPU64"/"LPU64", valid %x\n",
204 src->o_id, src->o_seq, valid);
206 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
208 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
209 src->o_valid, LTIME_S(dst->i_mtime),
210 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
212 if (valid & OBD_MD_FLATIME)
213 LTIME_S(dst->i_atime) = src->o_atime;
214 if (valid & OBD_MD_FLMTIME)
215 LTIME_S(dst->i_mtime) = src->o_mtime;
216 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
217 LTIME_S(dst->i_ctime) = src->o_ctime;
218 if (valid & OBD_MD_FLSIZE)
219 i_size_write(dst, src->o_size);
220 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space */
221 dst->i_blocks = src->o_blocks;
222 if (dst->i_blocks < src->o_blocks) /* overflow */
226 if (valid & OBD_MD_FLBLKSZ) {
227 dst->i_blkbits = cfs_ffs(src->o_blksize)-1;
228 #ifdef HAVE_INODE_BLKSIZE
229 dst->i_blksize = src->o_blksize;
232 if (valid & OBD_MD_FLMODE)
233 dst->i_mode = (dst->i_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
234 if (valid & OBD_MD_FLUID)
235 dst->i_uid = src->o_uid;
236 if (valid & OBD_MD_FLGID)
237 dst->i_gid = src->o_gid;
238 if (valid & OBD_MD_FLFLAGS)
239 dst->i_flags = src->o_flags;
241 EXPORT_SYMBOL(obdo_to_inode);