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 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/llog_swab.c
38 * Swabbing of llog datatypes (from disk or over the wire).
40 * Author: jacob berkman <jacob@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_LOG
46 #include <liblustre.h>
49 #include <lustre_log.h>
51 static void print_llogd_body(struct llogd_body *d)
53 CDEBUG(D_OTHER, "llogd body: %p\n", d);
54 CDEBUG(D_OTHER, "\tlgd_logid.lgl_oid: "LPX64"\n", d->lgd_logid.lgl_oid);
55 CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogr: "LPX64"\n", d->lgd_logid.lgl_ogr);
56 CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
57 CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
58 CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
59 CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
60 CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
61 CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
62 CDEBUG(D_OTHER, "\tlgd_cur_offset: "LPX64"\n", d->lgd_cur_offset);
65 void lustre_swab_llogd_body (struct llogd_body *d)
69 __swab64s (&d->lgd_logid.lgl_oid);
70 __swab64s (&d->lgd_logid.lgl_ogr);
71 __swab32s (&d->lgd_logid.lgl_ogen);
72 __swab32s (&d->lgd_ctxt_idx);
73 __swab32s (&d->lgd_llh_flags);
74 __swab32s (&d->lgd_index);
75 __swab32s (&d->lgd_saved_index);
76 __swab32s (&d->lgd_len);
77 __swab64s (&d->lgd_cur_offset);
81 EXPORT_SYMBOL(lustre_swab_llogd_body);
83 void lustre_swab_llogd_conn_body (struct llogd_conn_body *d)
85 __swab64s (&d->lgdc_gen.mnt_cnt);
86 __swab64s (&d->lgdc_gen.conn_cnt);
87 __swab64s (&d->lgdc_logid.lgl_oid);
88 __swab64s (&d->lgdc_logid.lgl_ogr);
89 __swab32s (&d->lgdc_logid.lgl_ogen);
90 __swab32s (&d->lgdc_ctxt_idx);
92 EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
94 void lustre_swab_ll_fid(struct ll_fid *fid)
97 __swab32s (&fid->generation);
98 __swab32s (&fid->f_type);
100 EXPORT_SYMBOL(lustre_swab_ll_fid);
102 void lustre_swab_lu_fid(struct lu_fid *fid)
104 __swab64s (&fid->f_seq);
105 __swab32s (&fid->f_oid);
106 __swab32s (&fid->f_ver);
108 EXPORT_SYMBOL(lustre_swab_lu_fid);
110 void lustre_swab_lu_seq_range(struct lu_seq_range *range)
112 __swab64s (&range->lsr_start);
113 __swab64s (&range->lsr_end);
114 __swab32s (&range->lsr_mdt);
116 EXPORT_SYMBOL(lustre_swab_lu_seq_range);
118 void lustre_swab_llog_rec(struct llog_rec_hdr *rec, struct llog_rec_tail *tail)
120 __swab32s(&rec->lrh_len);
121 __swab32s(&rec->lrh_index);
122 __swab32s(&rec->lrh_type);
124 switch (rec->lrh_type) {
126 struct llog_size_change_rec *lsc =
127 (struct llog_size_change_rec *)rec;
129 lustre_swab_ll_fid(&lsc->lsc_fid);
130 __swab32s(&lsc->lsc_ioepoch);
137 case MDS_UNLINK_REC: {
138 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
140 __swab64s(&lur->lur_oid);
141 __swab32s(&lur->lur_ogen);
145 case MDS_SETATTR_REC: {
146 struct llog_setattr_rec *lsr = (struct llog_setattr_rec *)rec;
148 __swab64s(&lsr->lsr_oid);
149 __swab32s(&lsr->lsr_ogen);
150 __swab32s(&lsr->lsr_uid);
151 __swab32s(&lsr->lsr_gid);
155 case CHANGELOG_REC: {
156 struct llog_changelog_rec *cr = (struct llog_changelog_rec*)rec;
158 __swab16s(&cr->cr_flags);
159 __swab16s(&cr->cr_namelen);
160 __swab32s(&cr->cr_type);
161 __swab64s(&cr->cr_index);
162 __swab64s(&cr->cr_prev);
163 __swab64s(&cr->cr_time);
164 lustre_swab_lu_fid(&cr->cr_tfid);
165 lustre_swab_lu_fid(&cr->cr_pfid);
169 case MDS_SETATTR64_REC: {
170 struct llog_setattr64_rec *lsr = (struct llog_setattr64_rec *)rec;
172 __swab64s(&lsr->lsr_oid);
173 __swab32s(&lsr->lsr_ogen);
174 __swab32s(&lsr->lsr_uid);
175 __swab32s(&lsr->lsr_gid);
181 /* these are swabbed as they are consumed */
184 case LLOG_HDR_MAGIC: {
185 struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
187 __swab64s(&llh->llh_timestamp);
188 __swab32s(&llh->llh_count);
189 __swab32s(&llh->llh_bitmap_offset);
190 __swab32s(&llh->llh_flags);
191 __swab32s(&llh->llh_size);
192 __swab32s(&llh->llh_cat_idx);
193 if (tail != &llh->llh_tail) {
194 __swab32s(&llh->llh_tail.lrt_index);
195 __swab32s(&llh->llh_tail.lrt_len);
200 case LLOG_LOGID_MAGIC: {
201 struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
203 __swab64s(&lid->lid_id.lgl_oid);
204 __swab64s(&lid->lid_id.lgl_ogr);
205 __swab32s(&lid->lid_id.lgl_ogen);
213 CERROR("Unknown llog rec type %#x swabbing rec %p\n",
218 __swab32s(&tail->lrt_len);
219 __swab32s(&tail->lrt_index);
222 EXPORT_SYMBOL(lustre_swab_llog_rec);
224 static void print_llog_hdr(struct llog_log_hdr *h)
226 CDEBUG(D_OTHER, "llog header: %p\n", h);
227 CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
228 CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
229 CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
230 CDEBUG(D_OTHER, "\tllh_timestamp: "LPX64"\n", h->llh_timestamp);
231 CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
232 CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
233 CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
234 CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
235 CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
236 CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
237 CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
240 void lustre_swab_llog_hdr (struct llog_log_hdr *h)
245 lustre_swab_llog_rec(&h->llh_hdr, &h->llh_tail);
250 EXPORT_SYMBOL(lustre_swab_llog_hdr);
252 static void print_lustre_cfg(struct lustre_cfg *lcfg)
257 if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
259 CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
260 CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
262 CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
263 CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
264 CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
265 CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
267 CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
268 if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
269 for (i = 0; i < lcfg->lcfg_bufcount; i++)
270 CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
271 i, lcfg->lcfg_buflens[i]);
275 void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
280 __swab32s(&lcfg->lcfg_version);
282 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
283 CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
284 lcfg->lcfg_version, LUSTRE_CFG_VERSION);
289 __swab32s(&lcfg->lcfg_command);
290 __swab32s(&lcfg->lcfg_num);
291 __swab32s(&lcfg->lcfg_flags);
292 __swab64s(&lcfg->lcfg_nid);
293 __swab32s(&lcfg->lcfg_bufcount);
294 for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
295 __swab32s(&lcfg->lcfg_buflens[i]);
297 print_lustre_cfg(lcfg);
301 EXPORT_SYMBOL(lustre_swab_lustre_cfg);
303 /* used only for compatibility with old on-disk cfg_marker data */
304 struct cfg_marker32 {
311 char cm_tgtname[MTI_NAME_MAXLEN];
312 char cm_comment[MTI_NAME_MAXLEN];
315 #define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
316 (sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
318 void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
320 struct cfg_marker32 *cm32 = (struct cfg_marker32*)marker;
324 __swab32s(&marker->cm_step);
325 __swab32s(&marker->cm_flags);
326 __swab32s(&marker->cm_vers);
328 if (size == sizeof(*cm32)) {
329 __u32 createtime, canceltime;
330 /* There was a problem with the original declaration of
331 * cfg_marker on 32-bit systems because it used time_t as
332 * a wire protocol structure, and didn't verify this in
333 * wirecheck. We now have to convert the offsets of the
334 * later fields in order to work on 32- and 64-bit systems.
336 * Fortunately, the cm_comment field has no functional use
337 * so can be sacrificed when converting the timestamp size.
339 * Overwrite fields from the end first, so they are not
340 * clobbered, and use memmove() instead of memcpy() because
341 * the source and target buffers overlap. bug 16771 */
342 createtime = cm32->cm_createtime;
343 canceltime = cm32->cm_canceltime;
344 memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
345 marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
346 memmove(marker->cm_tgtname, cm32->cm_tgtname,
347 sizeof(marker->cm_tgtname));
349 __swab32s(&createtime);
350 __swab32s(&canceltime);
352 marker->cm_createtime = createtime;
353 marker->cm_canceltime = canceltime;
354 CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) "
355 "for target %s, converting\n",
358 __swab64s(&marker->cm_createtime);
359 __swab64s(&marker->cm_canceltime);
365 EXPORT_SYMBOL(lustre_swab_cfg_marker);