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, obd_flag valid)
63 obd_flag newvalid = 0;
65 if (valid & OBD_MD_FLATIME) {
66 dst->o_atime = la->la_atime;
67 newvalid |= OBD_MD_FLATIME;
69 if (valid & OBD_MD_FLMTIME) {
70 dst->o_mtime = la->la_mtime;
71 newvalid |= OBD_MD_FLMTIME;
73 if (valid & OBD_MD_FLCTIME) {
74 dst->o_ctime = la->la_ctime;
75 newvalid |= OBD_MD_FLCTIME;
77 if (valid & OBD_MD_FLSIZE) {
78 dst->o_size = la->la_size;
79 newvalid |= OBD_MD_FLSIZE;
81 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */
82 dst->o_blocks = la->la_blocks;
83 newvalid |= OBD_MD_FLBLOCKS;
85 if (valid & OBD_MD_FLTYPE) {
86 dst->o_mode = (dst->o_mode & S_IALLUGO)|(la->la_mode & S_IFMT);
87 newvalid |= OBD_MD_FLTYPE;
89 if (valid & OBD_MD_FLMODE) {
90 dst->o_mode = (dst->o_mode & S_IFMT)|(la->la_mode & S_IALLUGO);
91 newvalid |= OBD_MD_FLMODE;
93 if (valid & OBD_MD_FLUID) {
94 dst->o_uid = la->la_uid;
95 newvalid |= OBD_MD_FLUID;
97 if (valid & OBD_MD_FLGID) {
98 dst->o_gid = la->la_gid;
99 newvalid |= OBD_MD_FLGID;
101 dst->o_valid |= newvalid;
103 EXPORT_SYMBOL(obdo_from_la);
105 void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid)
107 valid &= src->o_valid;
109 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
111 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
112 src->o_valid, LTIME_S(dst->i_mtime),
113 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
115 if (valid & OBD_MD_FLATIME && src->o_atime > LTIME_S(dst->i_atime))
116 LTIME_S(dst->i_atime) = src->o_atime;
117 if (valid & OBD_MD_FLMTIME && src->o_mtime > LTIME_S(dst->i_mtime))
118 LTIME_S(dst->i_mtime) = src->o_mtime;
119 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
120 LTIME_S(dst->i_ctime) = src->o_ctime;
121 if (valid & OBD_MD_FLSIZE)
122 i_size_write(dst, src->o_size);
123 /* optimum IO size */
124 if (valid & OBD_MD_FLBLKSZ && src->o_blksize > (1 << dst->i_blkbits)) {
125 dst->i_blkbits = cfs_ffs(src->o_blksize) - 1;
126 #ifdef HAVE_INODE_BLKSIZE
127 dst->i_blksize = src->o_blksize;
131 if (dst->i_blkbits < CFS_PAGE_SHIFT) {
132 #ifdef HAVE_INODE_BLKSIZE
133 dst->i_blksize = CFS_PAGE_SIZE;
135 dst->i_blkbits = CFS_PAGE_SHIFT;
138 /* allocation of space */
139 if (valid & OBD_MD_FLBLOCKS && src->o_blocks > dst->i_blocks)
141 * XXX shouldn't overflow be checked here like in
144 dst->i_blocks = src->o_blocks;
146 EXPORT_SYMBOL(obdo_refresh_inode);
148 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
150 valid &= src->o_valid;
152 LASSERTF(!(valid & (OBD_MD_FLTYPE | OBD_MD_FLGENER | OBD_MD_FLFID |
153 OBD_MD_FLID | OBD_MD_FLGROUP)),
154 "object "LPU64"/"LPU64", valid %x\n",
155 src->o_id, src->o_seq, valid);
157 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
159 "valid "LPX64", cur time %lu/%lu, new "LPU64"/"LPU64"\n",
160 src->o_valid, LTIME_S(dst->i_mtime),
161 LTIME_S(dst->i_ctime), src->o_mtime, src->o_ctime);
163 if (valid & OBD_MD_FLATIME)
164 LTIME_S(dst->i_atime) = src->o_atime;
165 if (valid & OBD_MD_FLMTIME)
166 LTIME_S(dst->i_mtime) = src->o_mtime;
167 if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(dst->i_ctime))
168 LTIME_S(dst->i_ctime) = src->o_ctime;
169 if (valid & OBD_MD_FLSIZE)
170 i_size_write(dst, src->o_size);
171 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space */
172 dst->i_blocks = src->o_blocks;
173 if (dst->i_blocks < src->o_blocks) /* overflow */
177 if (valid & OBD_MD_FLBLKSZ) {
178 dst->i_blkbits = cfs_ffs(src->o_blksize)-1;
179 #ifdef HAVE_INODE_BLKSIZE
180 dst->i_blksize = src->o_blksize;
183 if (valid & OBD_MD_FLMODE)
184 dst->i_mode = (dst->i_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
185 if (valid & OBD_MD_FLUID)
186 dst->i_uid = src->o_uid;
187 if (valid & OBD_MD_FLGID)
188 dst->i_gid = src->o_gid;
189 if (valid & OBD_MD_FLFLAGS)
190 dst->i_flags = src->o_flags;
192 EXPORT_SYMBOL(obdo_to_inode);