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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/obdo.c
34 * Object Devices Class Driver
35 * These are the only exported functions, they provide some generic
36 * infrastructure for managing object devices
39 #define DEBUG_SUBSYSTEM S_CLASS
41 #include <linux/user_namespace.h>
42 #include <linux/uidgid.h>
44 #include <obd_class.h>
45 #include <lustre_obdo.h>
47 void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent)
49 dst->o_parent_oid = fid_oid(parent);
50 dst->o_parent_seq = fid_seq(parent);
51 dst->o_parent_ver = fid_ver(parent);
52 dst->o_valid |= OBD_MD_FLPARENT | OBD_MD_FLFID;
54 EXPORT_SYMBOL(obdo_set_parent_fid);
56 void obdo_set_o_projid(struct obdo *dst, u32 projid)
58 dst->o_projid = projid;
59 dst->o_valid |= OBD_MD_FLPROJID;
61 EXPORT_SYMBOL(obdo_set_o_projid);
64 * WARNING: the file systems must take care not to tinker with
65 * attributes they don't manage (such as blocks).
67 void obdo_from_inode(struct obdo *dst, struct inode *src, u64 valid)
71 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
72 CDEBUG(D_INODE, "valid %#llx, new time %lld/%lld\n",
73 valid, (s64) src->i_mtime.tv_sec,
74 (s64) src->i_ctime.tv_sec);
76 if (valid & OBD_MD_FLATIME) {
77 dst->o_atime = src->i_atime.tv_sec;
78 newvalid |= OBD_MD_FLATIME;
80 if (valid & OBD_MD_FLMTIME) {
81 dst->o_mtime = src->i_mtime.tv_sec;
82 newvalid |= OBD_MD_FLMTIME;
84 if (valid & OBD_MD_FLCTIME) {
85 dst->o_ctime = src->i_ctime.tv_sec;
86 newvalid |= OBD_MD_FLCTIME;
88 if (valid & OBD_MD_FLSIZE) {
89 dst->o_size = i_size_read(src);
90 newvalid |= OBD_MD_FLSIZE;
92 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */
93 dst->o_blocks = src->i_blocks;
94 newvalid |= OBD_MD_FLBLOCKS;
96 if (valid & OBD_MD_FLBLKSZ) { /* optimal block size */
97 dst->o_blksize = 1U << src->i_blkbits;
98 newvalid |= OBD_MD_FLBLKSZ;
100 if (valid & OBD_MD_FLTYPE) {
101 dst->o_mode = (dst->o_mode & S_IALLUGO) |
102 (src->i_mode & S_IFMT);
103 newvalid |= OBD_MD_FLTYPE;
105 if (valid & OBD_MD_FLMODE) {
106 dst->o_mode = (dst->o_mode & S_IFMT) |
107 (src->i_mode & S_IALLUGO);
108 newvalid |= OBD_MD_FLMODE;
110 if (valid & OBD_MD_FLUID) {
111 dst->o_uid = from_kuid(&init_user_ns, src->i_uid);
112 newvalid |= OBD_MD_FLUID;
114 if (valid & OBD_MD_FLGID) {
115 dst->o_gid = from_kgid(&init_user_ns, src->i_gid);
116 newvalid |= OBD_MD_FLGID;
118 if (valid & OBD_MD_FLFLAGS) {
119 dst->o_flags = src->i_flags;
120 newvalid |= OBD_MD_FLFLAGS;
122 dst->o_valid |= newvalid;
124 EXPORT_SYMBOL(obdo_from_inode);
126 void obdo_cpy_md(struct obdo *dst, const struct obdo *src, u64 valid)
128 CDEBUG(D_INODE, "src obdo "DOSTID" valid %#llx, dst obdo "DOSTID"\n",
129 POSTID(&src->o_oi), src->o_valid, POSTID(&dst->o_oi));
130 if (valid & OBD_MD_FLATIME)
131 dst->o_atime = src->o_atime;
132 if (valid & OBD_MD_FLMTIME)
133 dst->o_mtime = src->o_mtime;
134 if (valid & OBD_MD_FLCTIME)
135 dst->o_ctime = src->o_ctime;
136 if (valid & OBD_MD_FLSIZE)
137 dst->o_size = src->o_size;
138 if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
139 dst->o_blocks = src->o_blocks;
140 if (valid & OBD_MD_FLBLKSZ)
141 dst->o_blksize = src->o_blksize;
142 if (valid & OBD_MD_FLTYPE)
143 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
144 if (valid & OBD_MD_FLMODE)
145 dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
146 if (valid & OBD_MD_FLUID)
147 dst->o_uid = src->o_uid;
148 if (valid & OBD_MD_FLGID)
149 dst->o_gid = src->o_gid;
150 if (valid & OBD_MD_FLFLAGS)
151 dst->o_flags = src->o_flags;
152 if (valid & OBD_MD_FLFID) {
153 dst->o_parent_seq = src->o_parent_seq;
154 dst->o_parent_ver = src->o_parent_ver;
156 if (valid & OBD_MD_FLPARENT)
157 dst->o_parent_oid = src->o_parent_oid;
158 if (valid & OBD_MD_FLHANDLE)
159 dst->o_handle = src->o_handle;
161 dst->o_valid |= valid;
163 EXPORT_SYMBOL(obdo_cpy_md);
165 void obdo_to_ioobj(const struct obdo *oa, struct obd_ioobj *ioobj)
167 ioobj->ioo_oid = oa->o_oi;
168 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP)))
169 ostid_set_seq_mdt0(&ioobj->ioo_oid);
172 * Since 2.4 this does not contain o_mode in the low 16 bits.
173 * Instead, it holds (bd_md_max_brw - 1) for multi-bulk BRW RPCs
175 ioobj->ioo_max_brw = 0;
177 EXPORT_SYMBOL(obdo_to_ioobj);
180 * Create an obdo to send over the wire
182 void lustre_set_wire_obdo(const struct obd_connect_data *ocd,
184 const struct obdo *lobdo)
190 if (!(wobdo->o_valid & OBD_MD_FLUID))
191 wobdo->o_uid = from_kuid(&init_user_ns, current_uid());
192 if (!(wobdo->o_valid & OBD_MD_FLGID))
193 wobdo->o_gid = from_kgid(&init_user_ns, current_gid());
195 if (unlikely(!(ocd->ocd_connect_flags & OBD_CONNECT_FID)) &&
196 fid_seq_is_echo(ostid_seq(&lobdo->o_oi))) {
198 * Currently OBD_FL_OSTID will only be used when 2.4 echo
199 * client communicate with pre-2.4 server
201 wobdo->o_oi.oi.oi_id = fid_oid(&lobdo->o_oi.oi_fid);
202 wobdo->o_oi.oi.oi_seq = fid_seq(&lobdo->o_oi.oi_fid);
205 EXPORT_SYMBOL(lustre_set_wire_obdo);
208 * Create a local obdo from a wire based odbo
210 void lustre_get_wire_obdo(const struct obd_connect_data *ocd,
212 const struct obdo *wobdo)
218 if (unlikely(!(ocd->ocd_connect_flags & OBD_CONNECT_FID)) &&
219 fid_seq_is_echo(wobdo->o_oi.oi.oi_seq)) {
221 lobdo->o_oi.oi_fid.f_seq = wobdo->o_oi.oi.oi_seq;
222 lobdo->o_oi.oi_fid.f_oid = wobdo->o_oi.oi.oi_id;
223 lobdo->o_oi.oi_fid.f_ver = 0;
226 EXPORT_SYMBOL(lustre_get_wire_obdo);