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)
119 struct llog_rec_tail *tail = NULL;
121 __swab32s(&rec->lrh_len);
122 __swab32s(&rec->lrh_index);
123 __swab32s(&rec->lrh_type);
124 __swab32s(&rec->lrh_id);
126 switch (rec->lrh_type) {
129 struct llog_size_change_rec *lsc =
130 (struct llog_size_change_rec *)rec;
132 lustre_swab_ll_fid(&lsc->lsc_fid);
133 __swab32s(&lsc->lsc_ioepoch);
134 tail = &lsc->lsc_tail;
139 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
141 __swab64s(&lur->lur_oid);
142 __swab32s(&lur->lur_oseq);
143 __swab32s(&lur->lur_count);
144 tail = &lur->lur_tail;
149 struct llog_changelog_rec *cr = (struct llog_changelog_rec*)rec;
151 __swab16s(&cr->cr.cr_namelen);
152 __swab16s(&cr->cr.cr_flags);
153 __swab32s(&cr->cr.cr_type);
154 __swab64s(&cr->cr.cr_index);
155 __swab64s(&cr->cr.cr_prev);
156 __swab64s(&cr->cr.cr_time);
157 lustre_swab_lu_fid(&cr->cr.cr_tfid);
158 lustre_swab_lu_fid(&cr->cr.cr_pfid);
159 if (CHANGELOG_REC_EXTENDED(&cr->cr)) {
160 struct llog_changelog_ext_rec *ext =
161 (struct llog_changelog_ext_rec *)rec;
163 lustre_swab_lu_fid(&ext->cr.cr_sfid);
164 lustre_swab_lu_fid(&ext->cr.cr_spfid);
165 tail = &ext->cr_tail;
171 case CHANGELOG_USER_REC:
173 struct llog_changelog_user_rec *cur =
174 (struct llog_changelog_user_rec*)rec;
176 __swab32s(&cur->cur_id);
177 __swab64s(&cur->cur_endrec);
178 tail = &cur->cur_tail;
182 case MDS_SETATTR64_REC:
184 struct llog_setattr64_rec *lsr =
185 (struct llog_setattr64_rec *)rec;
187 __swab64s(&lsr->lsr_oid);
188 __swab32s(&lsr->lsr_oseq);
189 __swab32s(&lsr->lsr_uid);
190 __swab32s(&lsr->lsr_uid_h);
191 __swab32s(&lsr->lsr_gid);
192 __swab32s(&lsr->lsr_gid_h);
193 tail = &lsr->lsr_tail;
197 /* these are swabbed as they are consumed */
201 struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
203 __swab64s(&llh->llh_timestamp);
204 __swab32s(&llh->llh_count);
205 __swab32s(&llh->llh_bitmap_offset);
206 __swab32s(&llh->llh_flags);
207 __swab32s(&llh->llh_size);
208 __swab32s(&llh->llh_cat_idx);
209 tail = &llh->llh_tail;
212 case LLOG_LOGID_MAGIC:
214 struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
216 __swab64s(&lid->lid_id.lgl_oid);
217 __swab64s(&lid->lid_id.lgl_oseq);
218 __swab32s(&lid->lid_id.lgl_ogen);
219 tail = &lid->lid_tail;
224 struct llog_gen_rec *lgr = (struct llog_gen_rec *)rec;
226 __swab64s(&lgr->lgr_gen.mnt_cnt);
227 __swab64s(&lgr->lgr_gen.conn_cnt);
228 tail = &lgr->lgr_tail;
234 CERROR("Unknown llog rec type %#x swabbing rec %p\n",
239 __swab32s(&tail->lrt_len);
240 __swab32s(&tail->lrt_index);
243 EXPORT_SYMBOL(lustre_swab_llog_rec);
245 static void print_llog_hdr(struct llog_log_hdr *h)
247 CDEBUG(D_OTHER, "llog header: %p\n", h);
248 CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
249 CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
250 CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
251 CDEBUG(D_OTHER, "\tllh_timestamp: "LPX64"\n", h->llh_timestamp);
252 CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
253 CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
254 CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
255 CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
256 CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
257 CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
258 CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
261 void lustre_swab_llog_hdr (struct llog_log_hdr *h)
266 lustre_swab_llog_rec(&h->llh_hdr);
271 EXPORT_SYMBOL(lustre_swab_llog_hdr);
273 static void print_lustre_cfg(struct lustre_cfg *lcfg)
278 if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
280 CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
281 CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
283 CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
284 CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
285 CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
286 CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
288 CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
289 if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
290 for (i = 0; i < lcfg->lcfg_bufcount; i++)
291 CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
292 i, lcfg->lcfg_buflens[i]);
296 void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
301 __swab32s(&lcfg->lcfg_version);
303 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
304 CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
305 lcfg->lcfg_version, LUSTRE_CFG_VERSION);
310 __swab32s(&lcfg->lcfg_command);
311 __swab32s(&lcfg->lcfg_num);
312 __swab32s(&lcfg->lcfg_flags);
313 __swab64s(&lcfg->lcfg_nid);
314 __swab32s(&lcfg->lcfg_bufcount);
315 for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
316 __swab32s(&lcfg->lcfg_buflens[i]);
318 print_lustre_cfg(lcfg);
322 EXPORT_SYMBOL(lustre_swab_lustre_cfg);
324 /* used only for compatibility with old on-disk cfg_marker data */
325 struct cfg_marker32 {
332 char cm_tgtname[MTI_NAME_MAXLEN];
333 char cm_comment[MTI_NAME_MAXLEN];
336 #define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
337 (sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
339 void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
341 struct cfg_marker32 *cm32 = (struct cfg_marker32*)marker;
345 __swab32s(&marker->cm_step);
346 __swab32s(&marker->cm_flags);
347 __swab32s(&marker->cm_vers);
349 if (size == sizeof(*cm32)) {
350 __u32 createtime, canceltime;
351 /* There was a problem with the original declaration of
352 * cfg_marker on 32-bit systems because it used time_t as
353 * a wire protocol structure, and didn't verify this in
354 * wirecheck. We now have to convert the offsets of the
355 * later fields in order to work on 32- and 64-bit systems.
357 * Fortunately, the cm_comment field has no functional use
358 * so can be sacrificed when converting the timestamp size.
360 * Overwrite fields from the end first, so they are not
361 * clobbered, and use memmove() instead of memcpy() because
362 * the source and target buffers overlap. bug 16771 */
363 createtime = cm32->cm_createtime;
364 canceltime = cm32->cm_canceltime;
365 memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
366 marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
367 memmove(marker->cm_tgtname, cm32->cm_tgtname,
368 sizeof(marker->cm_tgtname));
370 __swab32s(&createtime);
371 __swab32s(&canceltime);
373 marker->cm_createtime = createtime;
374 marker->cm_canceltime = canceltime;
375 CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) "
376 "for target %s, converting\n",
379 __swab64s(&marker->cm_createtime);
380 __swab64s(&marker->cm_canceltime);
386 EXPORT_SYMBOL(lustre_swab_cfg_marker);