1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
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
45 # define EXPORT_SYMTAB
49 #include <liblustre.h>
51 #include <linux/module.h>
52 #include <obd_class.h>
53 #include <lustre/lustre_idl.h>
58 #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */
60 /*FIXME: Just copy from obdo_from_inode*/
61 void obdo_from_la(struct obdo *dst, struct lu_attr *la, __u64 valid)
63 obd_flag newvalid = 0;
65 if (valid & LA_ATIME) {
66 dst->o_atime = la->la_atime;
67 newvalid |= OBD_MD_FLATIME;
69 if (valid & LA_MTIME) {
70 dst->o_mtime = la->la_mtime;
71 newvalid |= OBD_MD_FLMTIME;
73 if (valid & LA_CTIME) {
74 dst->o_ctime = la->la_ctime;
75 newvalid |= OBD_MD_FLCTIME;
77 if (valid & LA_SIZE) {
78 dst->o_size = la->la_size;
79 newvalid |= OBD_MD_FLSIZE;
81 if (valid & LA_BLOCKS) { /* allocation of space (x512 bytes) */
82 dst->o_blocks = la->la_blocks;
83 newvalid |= OBD_MD_FLBLOCKS;
85 if (valid & LA_TYPE) {
86 dst->o_mode = (dst->o_mode & S_IALLUGO) |
87 (la->la_mode & S_IFMT);
88 newvalid |= OBD_MD_FLTYPE;
90 if (valid & LA_MODE) {
91 dst->o_mode = (dst->o_mode & S_IFMT) |
92 (la->la_mode & S_IALLUGO);
93 newvalid |= OBD_MD_FLMODE;
96 dst->o_uid = la->la_uid;
97 newvalid |= OBD_MD_FLUID;
100 dst->o_gid = la->la_gid;
101 newvalid |= OBD_MD_FLGID;
103 dst->o_valid |= newvalid;
105 EXPORT_SYMBOL(obdo_from_la);
107 /*FIXME: Just copy from obdo_from_inode*/
108 void la_from_obdo(struct lu_attr *dst, struct obdo *obdo, obd_flag valid)
112 valid &= obdo->o_valid;
114 if (valid & OBD_MD_FLATIME) {
115 dst->la_atime = obdo->o_atime;
116 newvalid |= LA_ATIME;
118 if (valid & OBD_MD_FLMTIME) {
119 dst->la_mtime = obdo->o_mtime;
120 newvalid |= LA_MTIME;
122 if (valid & OBD_MD_FLCTIME) {
123 dst->la_ctime = obdo->o_ctime;
124 newvalid |= LA_CTIME;
126 if (valid & OBD_MD_FLSIZE) {
127 dst->la_size = obdo->o_size;
130 if (valid & OBD_MD_FLBLOCKS) {
131 dst->la_blocks = obdo->o_blocks;
132 newvalid |= LA_BLOCKS;
134 if (valid & OBD_MD_FLTYPE) {
135 dst->la_mode = (dst->la_mode & S_IALLUGO) |
136 (obdo->o_mode & S_IFMT);
139 if (valid & OBD_MD_FLMODE) {
140 dst->la_mode = (dst->la_mode & S_IFMT) |
141 (obdo->o_mode & S_IALLUGO);
144 if (valid & OBD_MD_FLUID) {
145 dst->la_uid = obdo->o_uid;
148 if (valid & OBD_MD_FLGID) {
149 dst->la_gid = obdo->o_gid;
152 dst->la_valid = newvalid;
154 EXPORT_SYMBOL(la_from_obdo);
156 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid)
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 = cfs_ffs(src->o_blksize) - 1;
177 #ifdef HAVE_INODE_BLKSIZE
178 dst->i_blksize = src->o_blksize;
182 if (dst->i_blkbits < CFS_PAGE_SHIFT) {
183 #ifdef HAVE_INODE_BLKSIZE
184 dst->i_blksize = CFS_PAGE_SIZE;
186 dst->i_blkbits = CFS_PAGE_SHIFT;
189 /* allocation of space */
190 if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks)
192 * XXX shouldn't overflow be checked here like in
195 dst->i_blocks = src->o_blocks;
197 EXPORT_SYMBOL(obdo_refresh_inode);
199 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
201 valid &= src->o_valid;
203 LASSERTF(!(valid & (OBD_MD_FLTYPE | OBD_MD_FLGENER | OBD_MD_FLFID |
204 OBD_MD_FLID | OBD_MD_FLGROUP)),
205 "object "LPU64"/"LPU64", valid %x\n",
206 src->o_id, src->o_seq, valid);
208 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
210 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
211 src->o_valid, LTIME_S(dst->i_mtime),
212 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
214 if (valid & OBD_MD_FLATIME)
215 LTIME_S(dst->i_atime) = src->o_atime;
216 if (valid & OBD_MD_FLMTIME)
217 LTIME_S(dst->i_mtime) = src->o_mtime;
218 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
219 LTIME_S(dst->i_ctime) = src->o_ctime;
220 if (valid & OBD_MD_FLSIZE)
221 i_size_write(dst, src->o_size);
222 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space */
223 dst->i_blocks = src->o_blocks;
224 if (dst->i_blocks < src->o_blocks) /* overflow */
228 if (valid & OBD_MD_FLBLKSZ) {
229 dst->i_blkbits = cfs_ffs(src->o_blksize)-1;
230 #ifdef HAVE_INODE_BLKSIZE
231 dst->i_blksize = src->o_blksize;
234 if (valid & OBD_MD_FLMODE)
235 dst->i_mode = (dst->i_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
236 if (valid & OBD_MD_FLUID)
237 dst->i_uid = src->o_uid;
238 if (valid & OBD_MD_FLGID)
239 dst->i_gid = src->o_gid;
240 if (valid & OBD_MD_FLFLAGS)
241 dst->i_flags = src->o_flags;
243 EXPORT_SYMBOL(obdo_to_inode);