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) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
32 * Copyright (c) 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
38 * lustre/obdclass/obdo.c
40 * Object Devices Class Driver
41 * These are the only exported functions, they provide some generic
42 * infrastructure for managing object devices
45 #define DEBUG_SUBSYSTEM S_CLASS
47 # define EXPORT_SYMTAB
51 #include "../liblustre/llite_lib.h"
53 #include <obd_class.h>
54 #include <lustre/lustre_idl.h>
57 static void obdo_set_parent_fid(struct obdo *dst, struct lu_fid *parent)
59 dst->o_parent_oid = fid_oid(parent);
60 dst->o_parent_seq = fid_seq(parent);
61 dst->o_parent_ver = fid_ver(parent);
62 dst->o_valid |= OBD_MD_FLGENER | OBD_MD_FLFID;
65 /* WARNING: the file systems must take care not to tinker with
66 attributes they don't manage (such as blocks). */
67 void obdo_from_inode(struct obdo *dst, struct inode *src, struct lu_fid *parent,
70 obd_flag newvalid = 0;
72 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
73 CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n",
74 valid, LTIME_S(src->i_mtime),
75 LTIME_S(src->i_ctime));
77 if (valid & OBD_MD_FLATIME) {
78 dst->o_atime = LTIME_S(src->i_atime);
79 newvalid |= OBD_MD_FLATIME;
81 if (valid & OBD_MD_FLMTIME) {
82 dst->o_mtime = LTIME_S(src->i_mtime);
83 newvalid |= OBD_MD_FLMTIME;
85 if (valid & OBD_MD_FLCTIME) {
86 dst->o_ctime = LTIME_S(src->i_ctime);
87 newvalid |= OBD_MD_FLCTIME;
89 if (valid & OBD_MD_FLSIZE) {
90 dst->o_size = i_size_read(src);
91 newvalid |= OBD_MD_FLSIZE;
93 if (valid & OBD_MD_FLBLOCKS) { /* allocation of space (x512 bytes) */
94 dst->o_blocks = src->i_blocks;
95 newvalid |= OBD_MD_FLBLOCKS;
97 if (valid & OBD_MD_FLBLKSZ) { /* optimal block size */
98 dst->o_blksize = ll_inode_blksize(src);
99 newvalid |= OBD_MD_FLBLKSZ;
101 if (valid & OBD_MD_FLTYPE) {
102 dst->o_mode = (dst->o_mode & S_IALLUGO) |
103 (src->i_mode & S_IFMT);
104 newvalid |= OBD_MD_FLTYPE;
106 if (valid & OBD_MD_FLMODE) {
107 dst->o_mode = (dst->o_mode & S_IFMT) |
108 (src->i_mode & S_IALLUGO);
109 newvalid |= OBD_MD_FLMODE;
111 if (valid & OBD_MD_FLUID) {
112 dst->o_uid = src->i_uid;
113 newvalid |= OBD_MD_FLUID;
115 if (valid & OBD_MD_FLGID) {
116 dst->o_gid = src->i_gid;
117 newvalid |= OBD_MD_FLGID;
119 if (valid & OBD_MD_FLFLAGS) {
120 dst->o_flags = ll_inode_flags(src);
121 newvalid |= OBD_MD_FLFLAGS;
124 obdo_set_parent_fid(dst, parent);
125 dst->o_valid |= newvalid;
127 EXPORT_SYMBOL(obdo_from_inode);
129 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid)
132 CDEBUG(D_INODE, "src obdo "LPX64" valid "LPX64", dst obdo "LPX64"\n",
133 src->o_id, src->o_valid, dst->o_id);
135 if (valid & OBD_MD_FLATIME)
136 dst->o_atime = src->o_atime;
137 if (valid & OBD_MD_FLMTIME)
138 dst->o_mtime = src->o_mtime;
139 if (valid & OBD_MD_FLCTIME)
140 dst->o_ctime = src->o_ctime;
141 if (valid & OBD_MD_FLSIZE)
142 dst->o_size = src->o_size;
143 if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
144 dst->o_blocks = src->o_blocks;
145 if (valid & OBD_MD_FLBLKSZ)
146 dst->o_blksize = src->o_blksize;
147 if (valid & OBD_MD_FLTYPE)
148 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
149 if (valid & OBD_MD_FLMODE)
150 dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
151 if (valid & OBD_MD_FLUID)
152 dst->o_uid = src->o_uid;
153 if (valid & OBD_MD_FLGID)
154 dst->o_gid = src->o_gid;
155 if (valid & OBD_MD_FLFLAGS)
156 dst->o_flags = src->o_flags;
157 if (valid & OBD_MD_FLFID) {
158 dst->o_parent_seq = src->o_parent_seq;
159 dst->o_parent_ver = src->o_parent_ver;
161 if (valid & OBD_MD_FLGENER)
162 dst->o_parent_oid = src->o_parent_oid;
163 if (valid & OBD_MD_FLHANDLE)
164 dst->o_handle = src->o_handle;
165 if (valid & OBD_MD_FLCOOKIE)
166 dst->o_lcookie = src->o_lcookie;
168 dst->o_valid |= valid;
170 EXPORT_SYMBOL(obdo_cpy_md);
172 /* returns FALSE if comparison (by flags) is same, TRUE if changed */
173 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_flag compare)
177 if ( compare & OBD_MD_FLATIME )
178 res = (res || (dst->o_atime != src->o_atime));
179 if ( compare & OBD_MD_FLMTIME )
180 res = (res || (dst->o_mtime != src->o_mtime));
181 if ( compare & OBD_MD_FLCTIME )
182 res = (res || (dst->o_ctime != src->o_ctime));
183 if ( compare & OBD_MD_FLSIZE )
184 res = (res || (dst->o_size != src->o_size));
185 if ( compare & OBD_MD_FLBLOCKS ) /* allocation of space */
186 res = (res || (dst->o_blocks != src->o_blocks));
187 if ( compare & OBD_MD_FLBLKSZ )
188 res = (res || (dst->o_blksize != src->o_blksize));
189 if ( compare & OBD_MD_FLTYPE )
190 res = (res || (((dst->o_mode ^ src->o_mode) & S_IFMT) != 0));
191 if ( compare & OBD_MD_FLMODE )
192 res = (res || (((dst->o_mode ^ src->o_mode) & ~S_IFMT) != 0));
193 if ( compare & OBD_MD_FLUID )
194 res = (res || (dst->o_uid != src->o_uid));
195 if ( compare & OBD_MD_FLGID )
196 res = (res || (dst->o_gid != src->o_gid));
197 if ( compare & OBD_MD_FLFLAGS )
198 res = (res || (dst->o_flags != src->o_flags));
199 if ( compare & OBD_MD_FLNLINK )
200 res = (res || (dst->o_nlink != src->o_nlink));
201 if ( compare & OBD_MD_FLFID ) {
202 res = (res || (dst->o_parent_seq != src->o_parent_seq));
203 res = (res || (dst->o_parent_ver != src->o_parent_ver));
205 if ( compare & OBD_MD_FLGENER )
206 res = (res || (dst->o_parent_oid != src->o_parent_oid));
207 /* XXX Don't know if thses should be included here - wasn't previously
208 if ( compare & OBD_MD_FLINLINE )
209 res = (res || memcmp(dst->o_inline, src->o_inline));
213 EXPORT_SYMBOL(obdo_cmp_md);
215 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj)
217 ioobj->ioo_id = oa->o_id;
218 if (oa->o_valid & OBD_MD_FLGROUP)
219 ioobj->ioo_seq = oa->o_seq;
222 ioobj->ioo_type = oa->o_mode;
224 EXPORT_SYMBOL(obdo_to_ioobj);
226 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned int ia_valid)
228 if (ia_valid & ATTR_ATIME) {
229 oa->o_atime = LTIME_S(attr->ia_atime);
230 oa->o_valid |= OBD_MD_FLATIME;
232 if (ia_valid & ATTR_MTIME) {
233 oa->o_mtime = LTIME_S(attr->ia_mtime);
234 oa->o_valid |= OBD_MD_FLMTIME;
236 if (ia_valid & ATTR_CTIME) {
237 oa->o_ctime = LTIME_S(attr->ia_ctime);
238 oa->o_valid |= OBD_MD_FLCTIME;
240 if (ia_valid & ATTR_SIZE) {
241 oa->o_size = attr->ia_size;
242 oa->o_valid |= OBD_MD_FLSIZE;
244 if (ia_valid & ATTR_MODE) {
245 oa->o_mode = attr->ia_mode;
246 oa->o_valid |= OBD_MD_FLTYPE | OBD_MD_FLMODE;
247 if (!cfs_curproc_is_in_groups(oa->o_gid) &&
248 !cfs_capable(CFS_CAP_FSETID))
249 oa->o_mode &= ~S_ISGID;
251 if (ia_valid & ATTR_UID) {
252 oa->o_uid = attr->ia_uid;
253 oa->o_valid |= OBD_MD_FLUID;
255 if (ia_valid & ATTR_GID) {
256 oa->o_gid = attr->ia_gid;
257 oa->o_valid |= OBD_MD_FLGID;
260 EXPORT_SYMBOL(obdo_from_iattr);
262 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid)
264 valid &= oa->o_valid;
266 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
267 CDEBUG(D_INODE, "valid "LPX64", new time "LPU64"/"LPU64"\n",
268 oa->o_valid, oa->o_mtime, oa->o_ctime);
271 if (valid & OBD_MD_FLATIME) {
272 LTIME_S(attr->ia_atime) = oa->o_atime;
273 attr->ia_valid |= ATTR_ATIME;
275 if (valid & OBD_MD_FLMTIME) {
276 LTIME_S(attr->ia_mtime) = oa->o_mtime;
277 attr->ia_valid |= ATTR_MTIME;
279 if (valid & OBD_MD_FLCTIME) {
280 LTIME_S(attr->ia_ctime) = oa->o_ctime;
281 attr->ia_valid |= ATTR_CTIME;
283 if (valid & OBD_MD_FLSIZE) {
284 attr->ia_size = oa->o_size;
285 attr->ia_valid |= ATTR_SIZE;
287 #if 0 /* you shouldn't be able to change a file's type with setattr */
288 if (valid & OBD_MD_FLTYPE) {
289 attr->ia_mode = (attr->ia_mode & ~S_IFMT)|(oa->o_mode & S_IFMT);
290 attr->ia_valid |= ATTR_MODE;
293 if (valid & OBD_MD_FLMODE) {
294 attr->ia_mode = (attr->ia_mode & S_IFMT)|(oa->o_mode & ~S_IFMT);
295 attr->ia_valid |= ATTR_MODE;
296 if (!cfs_curproc_is_in_groups(oa->o_gid) &&
297 !cfs_capable(CFS_CAP_FSETID))
298 attr->ia_mode &= ~S_ISGID;
300 if (valid & OBD_MD_FLUID) {
301 attr->ia_uid = oa->o_uid;
302 attr->ia_valid |= ATTR_UID;
304 if (valid & OBD_MD_FLGID) {
305 attr->ia_gid = oa->o_gid;
306 attr->ia_valid |= ATTR_GID;
309 EXPORT_SYMBOL(iattr_from_obdo);
311 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid)
313 iattr_from_obdo(&op_data->op_attr, oa, valid);
314 if (valid & OBD_MD_FLBLOCKS) {
315 op_data->op_attr_blocks = oa->o_blocks;
316 op_data->op_attr.ia_valid |= ATTR_BLOCKS;
318 if (valid & OBD_MD_FLFLAGS) {
319 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags =
321 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
324 EXPORT_SYMBOL(md_from_obdo);
326 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
329 obdo_from_iattr(oa, &op_data->op_attr, valid);
330 if (valid & ATTR_BLOCKS) {
331 oa->o_blocks = op_data->op_attr_blocks;
332 oa->o_valid |= OBD_MD_FLBLOCKS;
334 if (valid & ATTR_ATTR_FLAG) {
336 ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags;
337 oa->o_valid |= OBD_MD_FLFLAGS;
340 EXPORT_SYMBOL(obdo_from_md);