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) 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 <linux/user_namespace.h>
46 #ifdef HAVE_UIDGID_HEADER
47 # include <linux/uidgid.h>
49 #include <obd_class.h>
50 #include <lustre/lustre_idl.h>
52 void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent)
54 dst->o_parent_oid = fid_oid(parent);
55 dst->o_parent_seq = fid_seq(parent);
56 dst->o_parent_ver = fid_ver(parent);
57 dst->o_valid |= OBD_MD_FLGENER | OBD_MD_FLFID;
59 EXPORT_SYMBOL(obdo_set_parent_fid);
61 /* WARNING: the file systems must take care not to tinker with
62 attributes they don't manage (such as blocks). */
63 void obdo_from_inode(struct obdo *dst, struct inode *src, u64 valid)
67 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
68 CDEBUG(D_INODE, "valid "LPX64", new time %lu/%lu\n",
69 valid, LTIME_S(src->i_mtime),
70 LTIME_S(src->i_ctime));
72 if (valid & OBD_MD_FLATIME) {
73 dst->o_atime = LTIME_S(src->i_atime);
74 newvalid |= OBD_MD_FLATIME;
76 if (valid & OBD_MD_FLMTIME) {
77 dst->o_mtime = LTIME_S(src->i_mtime);
78 newvalid |= OBD_MD_FLMTIME;
80 if (valid & OBD_MD_FLCTIME) {
81 dst->o_ctime = LTIME_S(src->i_ctime);
82 newvalid |= OBD_MD_FLCTIME;
84 if (valid & OBD_MD_FLSIZE) {
85 dst->o_size = i_size_read(src);
86 newvalid |= OBD_MD_FLSIZE;
88 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */
89 dst->o_blocks = src->i_blocks;
90 newvalid |= OBD_MD_FLBLOCKS;
92 if (valid & OBD_MD_FLBLKSZ) { /* optimal block size */
93 dst->o_blksize = 1U << src->i_blkbits;
94 newvalid |= OBD_MD_FLBLKSZ;
96 if (valid & OBD_MD_FLTYPE) {
97 dst->o_mode = (dst->o_mode & S_IALLUGO) |
98 (src->i_mode & S_IFMT);
99 newvalid |= OBD_MD_FLTYPE;
101 if (valid & OBD_MD_FLMODE) {
102 dst->o_mode = (dst->o_mode & S_IFMT) |
103 (src->i_mode & S_IALLUGO);
104 newvalid |= OBD_MD_FLMODE;
106 if (valid & OBD_MD_FLUID) {
107 dst->o_uid = from_kuid(&init_user_ns, src->i_uid);
108 newvalid |= OBD_MD_FLUID;
110 if (valid & OBD_MD_FLGID) {
111 dst->o_gid = from_kgid(&init_user_ns, src->i_gid);
112 newvalid |= OBD_MD_FLGID;
114 if (valid & OBD_MD_FLFLAGS) {
115 dst->o_flags = src->i_flags;
116 newvalid |= OBD_MD_FLFLAGS;
118 dst->o_valid |= newvalid;
120 EXPORT_SYMBOL(obdo_from_inode);
122 void obdo_cpy_md(struct obdo *dst, const struct obdo *src, u64 valid)
124 CDEBUG(D_INODE, "src obdo "DOSTID" valid "LPX64", dst obdo "DOSTID"\n",
125 POSTID(&src->o_oi), src->o_valid, POSTID(&dst->o_oi));
126 if (valid & OBD_MD_FLATIME)
127 dst->o_atime = src->o_atime;
128 if (valid & OBD_MD_FLMTIME)
129 dst->o_mtime = src->o_mtime;
130 if (valid & OBD_MD_FLCTIME)
131 dst->o_ctime = src->o_ctime;
132 if (valid & OBD_MD_FLSIZE)
133 dst->o_size = src->o_size;
134 if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
135 dst->o_blocks = src->o_blocks;
136 if (valid & OBD_MD_FLBLKSZ)
137 dst->o_blksize = src->o_blksize;
138 if (valid & OBD_MD_FLTYPE)
139 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
140 if (valid & OBD_MD_FLMODE)
141 dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
142 if (valid & OBD_MD_FLUID)
143 dst->o_uid = src->o_uid;
144 if (valid & OBD_MD_FLGID)
145 dst->o_gid = src->o_gid;
146 if (valid & OBD_MD_FLFLAGS)
147 dst->o_flags = src->o_flags;
148 if (valid & OBD_MD_FLFID) {
149 dst->o_parent_seq = src->o_parent_seq;
150 dst->o_parent_ver = src->o_parent_ver;
152 if (valid & OBD_MD_FLGENER)
153 dst->o_parent_oid = src->o_parent_oid;
154 if (valid & OBD_MD_FLHANDLE)
155 dst->o_handle = src->o_handle;
157 dst->o_valid |= valid;
159 EXPORT_SYMBOL(obdo_cpy_md);
161 void obdo_to_ioobj(const struct obdo *oa, struct obd_ioobj *ioobj)
163 ioobj->ioo_oid = oa->o_oi;
164 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP)))
165 ostid_set_seq_mdt0(&ioobj->ioo_oid);
167 /* Since 2.4 this does not contain o_mode in the low 16 bits.
168 * Instead, it holds (bd_md_max_brw - 1) for multi-bulk BRW RPCs */
169 ioobj->ioo_max_brw = 0;
171 EXPORT_SYMBOL(obdo_to_ioobj);