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 <liblustre.h>
48 #include <linux/module.h>
49 #include <obd_class.h>
50 #include <lustre/lustre_idl.h>
55 #include <linux/pagemap.h> /* for PAGE_CACHE_SIZE */
57 /*FIXME: Just copy from obdo_from_inode*/
58 void obdo_from_la(struct obdo *dst, struct lu_attr *la, __u64 valid)
60 obd_flag newvalid = 0;
62 if (valid & LA_ATIME) {
63 dst->o_atime = la->la_atime;
64 newvalid |= OBD_MD_FLATIME;
66 if (valid & LA_MTIME) {
67 dst->o_mtime = la->la_mtime;
68 newvalid |= OBD_MD_FLMTIME;
70 if (valid & LA_CTIME) {
71 dst->o_ctime = la->la_ctime;
72 newvalid |= OBD_MD_FLCTIME;
74 if (valid & LA_SIZE) {
75 dst->o_size = la->la_size;
76 newvalid |= OBD_MD_FLSIZE;
78 if (valid & LA_BLOCKS) { /* allocation of space (x512 bytes) */
79 dst->o_blocks = la->la_blocks;
80 newvalid |= OBD_MD_FLBLOCKS;
82 if (valid & LA_TYPE) {
83 dst->o_mode = (dst->o_mode & S_IALLUGO) |
84 (la->la_mode & S_IFMT);
85 newvalid |= OBD_MD_FLTYPE;
87 if (valid & LA_MODE) {
88 dst->o_mode = (dst->o_mode & S_IFMT) |
89 (la->la_mode & S_IALLUGO);
90 newvalid |= OBD_MD_FLMODE;
93 dst->o_uid = la->la_uid;
94 newvalid |= OBD_MD_FLUID;
97 dst->o_gid = la->la_gid;
98 newvalid |= OBD_MD_FLGID;
100 if (valid & LA_FLAGS) {
101 dst->o_flags = la->la_flags;
102 newvalid |= OBD_MD_FLFLAGS;
104 dst->o_valid |= newvalid;
106 EXPORT_SYMBOL(obdo_from_la);
108 /*FIXME: Just copy from obdo_from_inode*/
109 void la_from_obdo(struct lu_attr *dst, const struct obdo *obdo, obd_flag valid)
113 valid &= obdo->o_valid;
115 if (valid & OBD_MD_FLATIME) {
116 dst->la_atime = obdo->o_atime;
117 newvalid |= LA_ATIME;
119 if (valid & OBD_MD_FLMTIME) {
120 dst->la_mtime = obdo->o_mtime;
121 newvalid |= LA_MTIME;
123 if (valid & OBD_MD_FLCTIME) {
124 dst->la_ctime = obdo->o_ctime;
125 newvalid |= LA_CTIME;
127 if (valid & OBD_MD_FLSIZE) {
128 dst->la_size = obdo->o_size;
131 if (valid & OBD_MD_FLBLOCKS) {
132 dst->la_blocks = obdo->o_blocks;
133 newvalid |= LA_BLOCKS;
135 if (valid & OBD_MD_FLTYPE) {
136 dst->la_mode = (dst->la_mode & S_IALLUGO) |
137 (obdo->o_mode & S_IFMT);
140 if (valid & OBD_MD_FLMODE) {
141 dst->la_mode = (dst->la_mode & S_IFMT) |
142 (obdo->o_mode & S_IALLUGO);
145 if (valid & OBD_MD_FLUID) {
146 dst->la_uid = obdo->o_uid;
149 if (valid & OBD_MD_FLGID) {
150 dst->la_gid = obdo->o_gid;
153 if (valid & OBD_MD_FLFLAGS) {
154 dst->la_flags = obdo->o_flags;
155 newvalid |= LA_FLAGS;
157 dst->la_valid = newvalid;
159 EXPORT_SYMBOL(la_from_obdo);
161 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid)
163 valid &= src->o_valid;
165 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
167 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
168 src->o_valid, LTIME_S(dst->i_mtime),
169 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
171 if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime))
172 LTIME_S(dst->i_atime) = src->o_atime;
173 if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime))
174 LTIME_S(dst->i_mtime) = src->o_mtime;
175 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
176 LTIME_S(dst->i_ctime) = src->o_ctime;
177 if (valid & OBD_MD_FLSIZE)
178 i_size_write(dst, src->o_size);
179 /* optimum IO size */
180 if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits))
181 dst->i_blkbits = ffs(src->o_blksize) - 1;
183 if (dst->i_blkbits < PAGE_CACHE_SHIFT)
184 dst->i_blkbits = PAGE_CACHE_SHIFT;
186 /* allocation of space */
187 if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks)
189 * XXX shouldn't overflow be checked here like in
192 dst->i_blocks = src->o_blocks;
194 EXPORT_SYMBOL(obdo_refresh_inode);
196 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
198 valid &= src->o_valid;
200 LASSERTF(!(valid & (OBD_MD_FLTYPE | OBD_MD_FLGENER | OBD_MD_FLFID |
201 OBD_MD_FLID | OBD_MD_FLGROUP)),
202 "object "DOSTID", valid %x\n", POSTID(&src->o_oi), valid);
204 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
206 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
207 src->o_valid, LTIME_S(dst->i_mtime),
208 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
210 if (valid & OBD_MD_FLATIME)
211 LTIME_S(dst->i_atime) = src->o_atime;
212 if (valid & OBD_MD_FLMTIME)
213 LTIME_S(dst->i_mtime) = src->o_mtime;
214 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
215 LTIME_S(dst->i_ctime) = src->o_ctime;
216 if (valid & OBD_MD_FLSIZE)
217 i_size_write(dst, src->o_size);
218 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space */
219 dst->i_blocks = src->o_blocks;
220 if (dst->i_blocks < src->o_blocks) /* overflow */
223 if (valid & OBD_MD_FLBLKSZ)
224 dst->i_blkbits = ffs(src->o_blksize)-1;
225 if (valid & OBD_MD_FLMODE)
226 dst->i_mode = (dst->i_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
227 if (valid & OBD_MD_FLUID)
228 dst->i_uid = make_kuid(&init_user_ns, src->o_uid);
229 if (valid & OBD_MD_FLGID)
230 dst->i_gid = make_kgid(&init_user_ns, src->o_gid);
231 if (valid & OBD_MD_FLFLAGS)
232 dst->i_flags = src->o_flags;
234 EXPORT_SYMBOL(obdo_to_inode);