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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
34 * lustre/obdclass/llog_swab.c
36 * Swabbing of llog datatypes (from disk or over the wire).
38 * Author: jacob berkman <jacob@clusterfs.com>
41 #define DEBUG_SUBSYSTEM S_LOG
44 #include <liblustre.h>
47 #include <lustre_log.h>
49 static void print_llogd_body(struct llogd_body *d)
51 CDEBUG(D_OTHER, "llogd body: %p\n", d);
52 CDEBUG(D_OTHER, "\tlgd_logid.lgl_oid: "LPX64"\n", d->lgd_logid.lgl_oid);
53 CDEBUG(D_OTHER, "\tlgd_logid.lgl_oseq: "LPX64"\n", d->lgd_logid.lgl_oseq);
54 CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
55 CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
56 CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
57 CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
58 CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
59 CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
60 CDEBUG(D_OTHER, "\tlgd_cur_offset: "LPX64"\n", d->lgd_cur_offset);
63 void lustre_swab_llogd_body (struct llogd_body *d)
67 __swab64s (&d->lgd_logid.lgl_oid);
68 __swab64s (&d->lgd_logid.lgl_oseq);
69 __swab32s (&d->lgd_logid.lgl_ogen);
70 __swab32s (&d->lgd_ctxt_idx);
71 __swab32s (&d->lgd_llh_flags);
72 __swab32s (&d->lgd_index);
73 __swab32s (&d->lgd_saved_index);
74 __swab32s (&d->lgd_len);
75 __swab64s (&d->lgd_cur_offset);
79 EXPORT_SYMBOL(lustre_swab_llogd_body);
81 void lustre_swab_llogd_conn_body (struct llogd_conn_body *d)
83 __swab64s (&d->lgdc_gen.mnt_cnt);
84 __swab64s (&d->lgdc_gen.conn_cnt);
85 __swab64s (&d->lgdc_logid.lgl_oid);
86 __swab64s (&d->lgdc_logid.lgl_oseq);
87 __swab32s (&d->lgdc_logid.lgl_ogen);
88 __swab32s (&d->lgdc_ctxt_idx);
90 EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
92 void lustre_swab_ll_fid(struct ll_fid *fid)
95 __swab32s (&fid->generation);
96 __swab32s (&fid->f_type);
98 EXPORT_SYMBOL(lustre_swab_ll_fid);
100 void lustre_swab_lu_fid(struct lu_fid *fid)
102 __swab64s (&fid->f_seq);
103 __swab32s (&fid->f_oid);
104 __swab32s (&fid->f_ver);
106 EXPORT_SYMBOL(lustre_swab_lu_fid);
108 void lustre_swab_lu_seq_range(struct lu_seq_range *range)
110 __swab64s (&range->lsr_start);
111 __swab64s (&range->lsr_end);
112 __swab32s (&range->lsr_index);
113 __swab32s (&range->lsr_flags);
115 EXPORT_SYMBOL(lustre_swab_lu_seq_range);
117 void lustre_swab_llog_rec(struct llog_rec_hdr *rec, struct llog_rec_tail *tail)
119 __swab32s(&rec->lrh_len);
120 __swab32s(&rec->lrh_index);
121 __swab32s(&rec->lrh_type);
123 switch (rec->lrh_type) {
125 struct llog_size_change_rec *lsc =
126 (struct llog_size_change_rec *)rec;
128 lustre_swab_ll_fid(&lsc->lsc_fid);
129 __swab32s(&lsc->lsc_ioepoch);
136 case MDS_UNLINK_REC: {
137 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
139 __swab64s(&lur->lur_oid);
140 __swab32s(&lur->lur_oseq);
141 __swab32s(&lur->lur_count);
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_oseq);
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.cr_namelen);
159 __swab16s(&cr->cr.cr_flags);
160 __swab32s(&cr->cr.cr_type);
161 __swab64s(&cr->cr.cr_index);
162 __swab64s(&cr->cr.cr_prev);
163 __swab64s(&cr->cr.cr_time);
164 lustre_swab_lu_fid(&cr->cr.cr_tfid);
165 lustre_swab_lu_fid(&cr->cr.cr_pfid);
169 case CHANGELOG_USER_REC: {
170 struct llog_changelog_user_rec *cur =
171 (struct llog_changelog_user_rec*)rec;
173 __swab32s(&cur->cur_id);
174 __swab64s(&cur->cur_endrec);
178 case MDS_SETATTR64_REC: {
179 struct llog_setattr64_rec *lsr = (struct llog_setattr64_rec *)rec;
181 __swab64s(&lsr->lsr_oid);
182 __swab32s(&lsr->lsr_oseq);
183 __swab32s(&lsr->lsr_uid);
184 __swab32s(&lsr->lsr_gid);
190 /* these are swabbed as they are consumed */
193 case LLOG_HDR_MAGIC: {
194 struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
196 __swab64s(&llh->llh_timestamp);
197 __swab32s(&llh->llh_count);
198 __swab32s(&llh->llh_bitmap_offset);
199 __swab32s(&llh->llh_flags);
200 __swab32s(&llh->llh_size);
201 __swab32s(&llh->llh_cat_idx);
202 if (tail != &llh->llh_tail) {
203 __swab32s(&llh->llh_tail.lrt_index);
204 __swab32s(&llh->llh_tail.lrt_len);
209 case LLOG_LOGID_MAGIC: {
210 struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
212 __swab64s(&lid->lid_id.lgl_oid);
213 __swab64s(&lid->lid_id.lgl_oseq);
214 __swab32s(&lid->lid_id.lgl_ogen);
221 CERROR("Unknown llog rec type %#x swabbing rec %p\n",
226 __swab32s(&tail->lrt_len);
227 __swab32s(&tail->lrt_index);
230 EXPORT_SYMBOL(lustre_swab_llog_rec);
232 static void print_llog_hdr(struct llog_log_hdr *h)
234 CDEBUG(D_OTHER, "llog header: %p\n", h);
235 CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
236 CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
237 CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
238 CDEBUG(D_OTHER, "\tllh_timestamp: "LPX64"\n", h->llh_timestamp);
239 CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
240 CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
241 CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
242 CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
243 CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
244 CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
245 CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
248 void lustre_swab_llog_hdr (struct llog_log_hdr *h)
253 lustre_swab_llog_rec(&h->llh_hdr, &h->llh_tail);
258 EXPORT_SYMBOL(lustre_swab_llog_hdr);
260 static void print_lustre_cfg(struct lustre_cfg *lcfg)
265 if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
267 CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
268 CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
270 CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
271 CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
272 CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
273 CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
275 CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
276 if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
277 for (i = 0; i < lcfg->lcfg_bufcount; i++)
278 CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
279 i, lcfg->lcfg_buflens[i]);
283 void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
288 __swab32s(&lcfg->lcfg_version);
290 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
291 CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
292 lcfg->lcfg_version, LUSTRE_CFG_VERSION);
297 __swab32s(&lcfg->lcfg_command);
298 __swab32s(&lcfg->lcfg_num);
299 __swab32s(&lcfg->lcfg_flags);
300 __swab64s(&lcfg->lcfg_nid);
301 __swab32s(&lcfg->lcfg_bufcount);
302 for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
303 __swab32s(&lcfg->lcfg_buflens[i]);
305 print_lustre_cfg(lcfg);
309 EXPORT_SYMBOL(lustre_swab_lustre_cfg);
311 /* used only for compatibility with old on-disk cfg_marker data */
312 struct cfg_marker32 {
319 char cm_tgtname[MTI_NAME_MAXLEN];
320 char cm_comment[MTI_NAME_MAXLEN];
323 #define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
324 (sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
326 void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
328 struct cfg_marker32 *cm32 = (struct cfg_marker32*)marker;
332 __swab32s(&marker->cm_step);
333 __swab32s(&marker->cm_flags);
334 __swab32s(&marker->cm_vers);
336 if (size == sizeof(*cm32)) {
337 __u32 createtime, canceltime;
338 /* There was a problem with the original declaration of
339 * cfg_marker on 32-bit systems because it used time_t as
340 * a wire protocol structure, and didn't verify this in
341 * wirecheck. We now have to convert the offsets of the
342 * later fields in order to work on 32- and 64-bit systems.
344 * Fortunately, the cm_comment field has no functional use
345 * so can be sacrificed when converting the timestamp size.
347 * Overwrite fields from the end first, so they are not
348 * clobbered, and use memmove() instead of memcpy() because
349 * the source and target buffers overlap. bug 16771 */
350 createtime = cm32->cm_createtime;
351 canceltime = cm32->cm_canceltime;
352 memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
353 marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
354 memmove(marker->cm_tgtname, cm32->cm_tgtname,
355 sizeof(marker->cm_tgtname));
357 __swab32s(&createtime);
358 __swab32s(&canceltime);
360 marker->cm_createtime = createtime;
361 marker->cm_canceltime = canceltime;
362 CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) "
363 "for target %s, converting\n",
366 __swab64s(&marker->cm_createtime);
367 __swab64s(&marker->cm_canceltime);
373 EXPORT_SYMBOL(lustre_swab_cfg_marker);