1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Object Devices Class Driver
6 * Copyright (C) 2001-2003 Cluster File Systems, Inc.
8 * This file is part of the Lustre file system, http://www.lustre.org
9 * Lustre is a trademark of Cluster File Systems, Inc.
11 * You may have signed or agreed to another license before downloading
12 * this software. If so, you are bound by the terms and conditions
13 * of that agreement, and the following does not apply to you. See the
14 * LICENSE file included with this distribution for more information.
16 * If you did not agree to a different license, then this copy of Lustre
17 * is open source software; you can redistribute it and/or modify it
18 * under the terms of version 2 of the GNU General Public License as
19 * published by the Free Software Foundation.
21 * In either case, Lustre is distributed in the hope that it will be
22 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
23 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * license text for more details.
26 * These are the only exported functions, they provide some generic
27 * infrastructure for managing object devices
30 #define DEBUG_SUBSYSTEM S_CLASS
32 # define EXPORT_SYMTAB
36 #include <liblustre.h>
38 #include <obd_class.h>
39 #include <lustre/lustre_idl.h>
42 void obdo_cpy_md(struct obdo *dst, struct obdo *src, obd_flag valid)
45 CLASSERT(sizeof(struct lustre_handle) +
46 sizeof(struct llog_cookie) <= sizeof(src->o_inline));
48 CDEBUG(D_INODE, "src obdo "LPX64" valid "LPX64", dst obdo "LPX64"\n",
49 src->o_id, src->o_valid, dst->o_id);
51 if (valid & OBD_MD_FLATIME)
52 dst->o_atime = src->o_atime;
53 if (valid & OBD_MD_FLMTIME)
54 dst->o_mtime = src->o_mtime;
55 if (valid & OBD_MD_FLCTIME)
56 dst->o_ctime = src->o_ctime;
57 if (valid & OBD_MD_FLSIZE)
58 dst->o_size = src->o_size;
59 if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
60 dst->o_blocks = src->o_blocks;
61 if (valid & OBD_MD_FLBLKSZ)
62 dst->o_blksize = src->o_blksize;
63 if (valid & OBD_MD_FLTYPE)
64 dst->o_mode = (dst->o_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
65 if (valid & OBD_MD_FLMODE)
66 dst->o_mode = (dst->o_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
67 if (valid & OBD_MD_FLUID)
68 dst->o_uid = src->o_uid;
69 if (valid & OBD_MD_FLGID)
70 dst->o_gid = src->o_gid;
71 if (valid & OBD_MD_FLFLAGS)
72 dst->o_flags = src->o_flags;
73 if (valid & OBD_MD_FLGENER)
74 dst->o_generation = src->o_generation;
75 if (valid & OBD_MD_FLINLINE)
76 memcpy(dst->o_inline, src->o_inline, sizeof(src->o_inline));
78 dst->o_valid |= valid;
80 EXPORT_SYMBOL(obdo_cpy_md);
82 /* returns FALSE if comparison (by flags) is same, TRUE if changed */
83 int obdo_cmp_md(struct obdo *dst, struct obdo *src, obd_flag compare)
87 if ( compare & OBD_MD_FLATIME )
88 res = (res || (dst->o_atime != src->o_atime));
89 if ( compare & OBD_MD_FLMTIME )
90 res = (res || (dst->o_mtime != src->o_mtime));
91 if ( compare & OBD_MD_FLCTIME )
92 res = (res || (dst->o_ctime != src->o_ctime));
93 if ( compare & OBD_MD_FLSIZE )
94 res = (res || (dst->o_size != src->o_size));
95 if ( compare & OBD_MD_FLBLOCKS ) /* allocation of space */
96 res = (res || (dst->o_blocks != src->o_blocks));
97 if ( compare & OBD_MD_FLBLKSZ )
98 res = (res || (dst->o_blksize != src->o_blksize));
99 if ( compare & OBD_MD_FLTYPE )
100 res = (res || (((dst->o_mode ^ src->o_mode) & S_IFMT) != 0));
101 if ( compare & OBD_MD_FLMODE )
102 res = (res || (((dst->o_mode ^ src->o_mode) & ~S_IFMT) != 0));
103 if ( compare & OBD_MD_FLUID )
104 res = (res || (dst->o_uid != src->o_uid));
105 if ( compare & OBD_MD_FLGID )
106 res = (res || (dst->o_gid != src->o_gid));
107 if ( compare & OBD_MD_FLFLAGS )
108 res = (res || (dst->o_flags != src->o_flags));
109 if ( compare & OBD_MD_FLNLINK )
110 res = (res || (dst->o_nlink != src->o_nlink));
111 if ( compare & OBD_MD_FLGENER )
112 res = (res || (dst->o_generation != src->o_generation));
113 /* XXX Don't know if thses should be included here - wasn't previously
114 if ( compare & OBD_MD_FLINLINE )
115 res = (res || memcmp(dst->o_inline, src->o_inline));
119 EXPORT_SYMBOL(obdo_cmp_md);
121 void obdo_to_ioobj(struct obdo *oa, struct obd_ioobj *ioobj)
123 ioobj->ioo_id = oa->o_id;
124 if (oa->o_valid & OBD_MD_FLGROUP)
125 ioobj->ioo_gr = oa->o_gr;
128 ioobj->ioo_type = oa->o_mode;
130 EXPORT_SYMBOL(obdo_to_ioobj);
132 void obdo_from_iattr(struct obdo *oa, struct iattr *attr, unsigned int ia_valid)
134 if (ia_valid & ATTR_ATIME) {
135 oa->o_atime = LTIME_S(attr->ia_atime);
136 oa->o_valid |= OBD_MD_FLATIME;
138 if (ia_valid & ATTR_MTIME) {
139 oa->o_mtime = LTIME_S(attr->ia_mtime);
140 oa->o_valid |= OBD_MD_FLMTIME;
142 if (ia_valid & ATTR_CTIME) {
143 oa->o_ctime = LTIME_S(attr->ia_ctime);
144 oa->o_valid |= OBD_MD_FLCTIME;
146 if (ia_valid & ATTR_SIZE) {
147 oa->o_size = attr->ia_size;
148 oa->o_valid |= OBD_MD_FLSIZE;
150 if (ia_valid & ATTR_MODE) {
151 oa->o_mode = attr->ia_mode;
152 oa->o_valid |= OBD_MD_FLTYPE | OBD_MD_FLMODE;
153 if (!in_group_p(oa->o_gid) && !capable(CAP_FSETID))
154 oa->o_mode &= ~S_ISGID;
156 if (ia_valid & ATTR_UID) {
157 oa->o_uid = attr->ia_uid;
158 oa->o_valid |= OBD_MD_FLUID;
160 if (ia_valid & ATTR_GID) {
161 oa->o_gid = attr->ia_gid;
162 oa->o_valid |= OBD_MD_FLGID;
165 EXPORT_SYMBOL(obdo_from_iattr);
167 void iattr_from_obdo(struct iattr *attr, struct obdo *oa, obd_flag valid)
169 valid &= oa->o_valid;
171 if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
172 CDEBUG(D_INODE, "valid "LPX64", new time "LPU64"/"LPU64"\n",
173 oa->o_valid, oa->o_mtime, oa->o_ctime);
176 if (valid & OBD_MD_FLATIME) {
177 LTIME_S(attr->ia_atime) = oa->o_atime;
178 attr->ia_valid |= ATTR_ATIME;
180 if (valid & OBD_MD_FLMTIME) {
181 LTIME_S(attr->ia_mtime) = oa->o_mtime;
182 attr->ia_valid |= ATTR_MTIME;
184 if (valid & OBD_MD_FLCTIME) {
185 LTIME_S(attr->ia_ctime) = oa->o_ctime;
186 attr->ia_valid |= ATTR_CTIME;
188 if (valid & OBD_MD_FLSIZE) {
189 attr->ia_size = oa->o_size;
190 attr->ia_valid |= ATTR_SIZE;
192 #if 0 /* you shouldn't be able to change a file's type with setattr */
193 if (valid & OBD_MD_FLTYPE) {
194 attr->ia_mode = (attr->ia_mode & ~S_IFMT)|(oa->o_mode & S_IFMT);
195 attr->ia_valid |= ATTR_MODE;
198 if (valid & OBD_MD_FLMODE) {
199 attr->ia_mode = (attr->ia_mode & S_IFMT)|(oa->o_mode & ~S_IFMT);
200 attr->ia_valid |= ATTR_MODE;
201 if (!in_group_p(oa->o_gid) && !capable(CAP_FSETID))
202 attr->ia_mode &= ~S_ISGID;
204 if (valid & OBD_MD_FLUID) {
205 attr->ia_uid = oa->o_uid;
206 attr->ia_valid |= ATTR_UID;
208 if (valid & OBD_MD_FLGID) {
209 attr->ia_gid = oa->o_gid;
210 attr->ia_valid |= ATTR_GID;
213 EXPORT_SYMBOL(iattr_from_obdo);
215 void md_from_obdo(struct md_op_data *op_data, struct obdo *oa, obd_flag valid)
217 iattr_from_obdo(&op_data->attr, oa, valid);
218 if (valid & OBD_MD_FLBLOCKS) {
219 op_data->attr_blocks = oa->o_blocks;
220 op_data->attr.ia_valid |= ATTR_BLOCKS;
222 if (valid & OBD_MD_FLFLAGS) {
223 ((struct ll_iattr *)&op_data->attr)->ia_attr_flags =
225 op_data->attr.ia_valid |= ATTR_ATTR_FLAG;
228 EXPORT_SYMBOL(md_from_obdo);
230 void obdo_from_md(struct obdo *oa, struct md_op_data *op_data,
233 obdo_from_iattr(oa, &op_data->attr, valid);
234 if (valid & ATTR_BLOCKS) {
235 oa->o_blocks = op_data->attr_blocks;
236 oa->o_valid |= OBD_MD_FLBLOCKS;
238 if (valid & ATTR_ATTR_FLAG) {
240 ((struct ll_iattr *)&op_data->attr)->ia_attr_flags;
241 oa->o_valid |= OBD_MD_FLFLAGS;
244 EXPORT_SYMBOL(obdo_from_md);