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
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18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2014, 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/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 #include <obd_class.h>
46 #include <lustre/lustre_idl.h>
48 void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent)
50 dst->o_parent_oid = fid_oid(parent);
51 dst->o_parent_seq = fid_seq(parent);
52 dst->o_parent_ver = fid_ver(parent);
53 dst->o_valid |= OBD_MD_FLGENER | OBD_MD_FLFID;
55 EXPORT_SYMBOL(obdo_set_parent_fid);
57 /* WARNING: the file systems must take care not to tinker with
58 attributes they don't manage (such as blocks). */
59 void obdo_from_inode(struct obdo *dst, struct inode *src, u64 valid)
63 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
64 CDEBUG(D_INODE, "valid "LPX64", new time %lu/%lu\n",
65 valid, LTIME_S(src->i_mtime),
66 LTIME_S(src->i_ctime));
68 if (valid & OBD_MD_FLATIME) {
69 dst->o_atime = LTIME_S(src->i_atime);
70 newvalid |= OBD_MD_FLATIME;
72 if (valid & OBD_MD_FLMTIME) {
73 dst->o_mtime = LTIME_S(src->i_mtime);
74 newvalid |= OBD_MD_FLMTIME;
76 if (valid & OBD_MD_FLCTIME) {
77 dst->o_ctime = LTIME_S(src->i_ctime);
78 newvalid |= OBD_MD_FLCTIME;
80 if (valid & OBD_MD_FLSIZE) {
81 dst->o_size = i_size_read(src);
82 newvalid |= OBD_MD_FLSIZE;
84 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */
85 dst->o_blocks = src->i_blocks;
86 newvalid |= OBD_MD_FLBLOCKS;
88 if (valid & OBD_MD_FLBLKSZ) { /* optimal block size */
89 dst->o_blksize = 1U << src->i_blkbits;
90 newvalid |= OBD_MD_FLBLKSZ;
92 if (valid & OBD_MD_FLTYPE) {
93 dst->o_mode = (dst->o_mode & S_IALLUGO) |
94 (src->i_mode & S_IFMT);
95 newvalid |= OBD_MD_FLTYPE;
97 if (valid & OBD_MD_FLMODE) {
98 dst->o_mode = (dst->o_mode & S_IFMT) |
99 (src->i_mode & S_IALLUGO);
100 newvalid |= OBD_MD_FLMODE;
102 if (valid & OBD_MD_FLUID) {
103 dst->o_uid = from_kuid(&init_user_ns, src->i_uid);
104 newvalid |= OBD_MD_FLUID;
106 if (valid & OBD_MD_FLGID) {
107 dst->o_gid = from_kgid(&init_user_ns, src->i_gid);
108 newvalid |= OBD_MD_FLGID;
110 if (valid & OBD_MD_FLFLAGS) {
111 dst->o_flags = src->i_flags;
112 newvalid |= OBD_MD_FLFLAGS;
114 dst->o_valid |= newvalid;
116 EXPORT_SYMBOL(obdo_from_inode);
118 void obdo_cpy_md(struct obdo *dst, const struct obdo *src, u64 valid)
120 CDEBUG(D_INODE, "src obdo "DOSTID" valid "LPX64", dst obdo "DOSTID"\n",
121 POSTID(&src->o_oi), src->o_valid, POSTID(&dst->o_oi));
122 if (valid & OBD_MD_FLATIME)
123 dst->o_atime = src->o_atime;
124 if (valid & OBD_MD_FLMTIME)
125 dst->o_mtime = src->o_mtime;
126 if (valid & OBD_MD_FLCTIME)
127 dst->o_ctime = src->o_ctime;
128 if (valid & OBD_MD_FLSIZE)
129 dst->o_size = src->o_size;
130 if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
131 dst->o_blocks = src->o_blocks;
132 if (valid & OBD_MD_FLBLKSZ)
133 dst->o_blksize = src->o_blksize;
134 if (valid & OBD_MD_FLTYPE)
135 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
136 if (valid & OBD_MD_FLMODE)
137 dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
138 if (valid & OBD_MD_FLUID)
139 dst->o_uid = src->o_uid;
140 if (valid & OBD_MD_FLGID)
141 dst->o_gid = src->o_gid;
142 if (valid & OBD_MD_FLFLAGS)
143 dst->o_flags = src->o_flags;
144 if (valid & OBD_MD_FLFID) {
145 dst->o_parent_seq = src->o_parent_seq;
146 dst->o_parent_ver = src->o_parent_ver;
148 if (valid & OBD_MD_FLGENER)
149 dst->o_parent_oid = src->o_parent_oid;
150 if (valid & OBD_MD_FLHANDLE)
151 dst->o_handle = src->o_handle;
152 if (valid & OBD_MD_FLCOOKIE)
153 dst->o_lcookie = src->o_lcookie;
155 dst->o_valid |= valid;
157 EXPORT_SYMBOL(obdo_cpy_md);
159 void obdo_to_ioobj(const struct obdo *oa, struct obd_ioobj *ioobj)
161 ioobj->ioo_oid = oa->o_oi;
162 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP)))
163 ostid_set_seq_mdt0(&ioobj->ioo_oid);
165 /* Since 2.4 this does not contain o_mode in the low 16 bits.
166 * Instead, it holds (bd_md_max_brw - 1) for multi-bulk BRW RPCs */
167 ioobj->ioo_max_brw = 0;
169 EXPORT_SYMBOL(obdo_to_ioobj);