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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/llog_swab.c
34 * Swabbing of llog datatypes (from disk or over the wire).
36 * Author: jacob berkman <jacob@clusterfs.com>
39 #define DEBUG_SUBSYSTEM S_LOG
41 #include "../include/lustre_log.h"
43 static void print_llogd_body(struct llogd_body *d)
45 CDEBUG(D_OTHER, "llogd body: %p\n", d);
46 CDEBUG(D_OTHER, "\tlgd_logid.lgl_oi: "DOSTID"\n",
47 POSTID(&d->lgd_logid.lgl_oi));
48 CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
49 CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
50 CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
51 CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
52 CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
53 CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
54 CDEBUG(D_OTHER, "\tlgd_cur_offset: %#llx\n", d->lgd_cur_offset);
57 void lustre_swab_lu_fid(struct lu_fid *fid)
59 __swab64s(&fid->f_seq);
60 __swab32s(&fid->f_oid);
61 __swab32s(&fid->f_ver);
63 EXPORT_SYMBOL(lustre_swab_lu_fid);
65 void lustre_swab_ost_id(struct ost_id *oid)
67 if (fid_seq_is_mdt0(oid->oi.oi_seq)) {
68 __swab64s(&oid->oi.oi_id);
69 __swab64s(&oid->oi.oi_seq);
71 lustre_swab_lu_fid(&oid->oi_fid);
74 EXPORT_SYMBOL(lustre_swab_ost_id);
76 static void lustre_swab_llog_id(struct llog_logid *log_id)
78 __swab64s(&log_id->lgl_oi.oi.oi_id);
79 __swab64s(&log_id->lgl_oi.oi.oi_seq);
80 __swab32s(&log_id->lgl_ogen);
83 void lustre_swab_llogd_body(struct llogd_body *d)
86 lustre_swab_llog_id(&d->lgd_logid);
87 __swab32s(&d->lgd_ctxt_idx);
88 __swab32s(&d->lgd_llh_flags);
89 __swab32s(&d->lgd_index);
90 __swab32s(&d->lgd_saved_index);
91 __swab32s(&d->lgd_len);
92 __swab64s(&d->lgd_cur_offset);
95 EXPORT_SYMBOL(lustre_swab_llogd_body);
97 void lustre_swab_llogd_conn_body(struct llogd_conn_body *d)
99 __swab64s(&d->lgdc_gen.mnt_cnt);
100 __swab64s(&d->lgdc_gen.conn_cnt);
101 lustre_swab_llog_id(&d->lgdc_logid);
102 __swab32s(&d->lgdc_ctxt_idx);
104 EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
106 static void lustre_swab_ll_fid(struct ll_fid *fid)
109 __swab32s(&fid->generation);
110 __swab32s(&fid->f_type);
113 void lustre_swab_lu_seq_range(struct lu_seq_range *range)
115 __swab64s(&range->lsr_start);
116 __swab64s(&range->lsr_end);
117 __swab32s(&range->lsr_index);
118 __swab32s(&range->lsr_flags);
120 EXPORT_SYMBOL(lustre_swab_lu_seq_range);
122 void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
124 struct llog_rec_tail *tail = NULL;
126 __swab32s(&rec->lrh_len);
127 __swab32s(&rec->lrh_index);
128 __swab32s(&rec->lrh_type);
129 __swab32s(&rec->lrh_id);
131 switch (rec->lrh_type) {
134 struct llog_size_change_rec *lsc =
135 (struct llog_size_change_rec *)rec;
137 lustre_swab_ll_fid(&lsc->lsc_fid);
138 __swab32s(&lsc->lsc_ioepoch);
139 tail = &lsc->lsc_tail;
144 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
146 __swab64s(&lur->lur_oid);
147 __swab32s(&lur->lur_oseq);
148 __swab32s(&lur->lur_count);
149 tail = &lur->lur_tail;
152 case MDS_UNLINK64_REC:
154 struct llog_unlink64_rec *lur =
155 (struct llog_unlink64_rec *)rec;
157 lustre_swab_lu_fid(&lur->lur_fid);
158 __swab32s(&lur->lur_count);
159 tail = &lur->lur_tail;
164 struct llog_changelog_rec *cr =
165 (struct llog_changelog_rec *)rec;
167 __swab16s(&cr->cr.cr_namelen);
168 __swab16s(&cr->cr.cr_flags);
169 __swab32s(&cr->cr.cr_type);
170 __swab64s(&cr->cr.cr_index);
171 __swab64s(&cr->cr.cr_prev);
172 __swab64s(&cr->cr.cr_time);
173 lustre_swab_lu_fid(&cr->cr.cr_tfid);
174 lustre_swab_lu_fid(&cr->cr.cr_pfid);
175 if (CHANGELOG_REC_EXTENDED(&cr->cr)) {
176 struct llog_changelog_ext_rec *ext =
177 (struct llog_changelog_ext_rec *)rec;
179 lustre_swab_lu_fid(&ext->cr.cr_sfid);
180 lustre_swab_lu_fid(&ext->cr.cr_spfid);
181 tail = &ext->cr_tail;
185 tail = (struct llog_rec_tail *)((char *)tail +
189 case CHANGELOG_USER_REC:
191 struct llog_changelog_user_rec *cur =
192 (struct llog_changelog_user_rec *)rec;
194 __swab32s(&cur->cur_id);
195 __swab64s(&cur->cur_endrec);
196 tail = &cur->cur_tail;
200 case HSM_AGENT_REC: {
201 struct llog_agent_req_rec *arr =
202 (struct llog_agent_req_rec *)rec;
204 __swab32s(&arr->arr_hai.hai_len);
205 __swab32s(&arr->arr_hai.hai_action);
206 lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
207 lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
208 __swab64s(&arr->arr_hai.hai_cookie);
209 __swab64s(&arr->arr_hai.hai_extent.offset);
210 __swab64s(&arr->arr_hai.hai_extent.length);
211 __swab64s(&arr->arr_hai.hai_gid);
212 /* no swabing for opaque data */
217 case MDS_SETATTR64_REC:
219 struct llog_setattr64_rec *lsr =
220 (struct llog_setattr64_rec *)rec;
222 lustre_swab_ost_id(&lsr->lsr_oi);
223 __swab32s(&lsr->lsr_uid);
224 __swab32s(&lsr->lsr_uid_h);
225 __swab32s(&lsr->lsr_gid);
226 __swab32s(&lsr->lsr_gid_h);
227 tail = &lsr->lsr_tail;
231 /* these are swabbed as they are consumed */
235 struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
237 __swab64s(&llh->llh_timestamp);
238 __swab32s(&llh->llh_count);
239 __swab32s(&llh->llh_bitmap_offset);
240 __swab32s(&llh->llh_flags);
241 __swab32s(&llh->llh_size);
242 __swab32s(&llh->llh_cat_idx);
243 tail = &llh->llh_tail;
246 case LLOG_LOGID_MAGIC:
248 struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
250 lustre_swab_llog_id(&lid->lid_id);
251 tail = &lid->lid_tail;
256 struct llog_gen_rec *lgr = (struct llog_gen_rec *)rec;
258 __swab64s(&lgr->lgr_gen.mnt_cnt);
259 __swab64s(&lgr->lgr_gen.conn_cnt);
260 tail = &lgr->lgr_tail;
266 CERROR("Unknown llog rec type %#x swabbing rec %p\n",
271 __swab32s(&tail->lrt_len);
272 __swab32s(&tail->lrt_index);
275 EXPORT_SYMBOL(lustre_swab_llog_rec);
277 static void print_llog_hdr(struct llog_log_hdr *h)
279 CDEBUG(D_OTHER, "llog header: %p\n", h);
280 CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
281 CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
282 CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
283 CDEBUG(D_OTHER, "\tllh_timestamp: %#llx\n", h->llh_timestamp);
284 CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
285 CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
286 CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
287 CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
288 CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
289 CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
290 CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
293 void lustre_swab_llog_hdr(struct llog_log_hdr *h)
297 lustre_swab_llog_rec(&h->llh_hdr);
301 EXPORT_SYMBOL(lustre_swab_llog_hdr);
303 static void print_lustre_cfg(struct lustre_cfg *lcfg)
307 if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
309 CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
310 CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
312 CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
313 CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
314 CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
315 CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
317 CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
318 if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
319 for (i = 0; i < lcfg->lcfg_bufcount; i++)
320 CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
321 i, lcfg->lcfg_buflens[i]);
324 void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
328 __swab32s(&lcfg->lcfg_version);
330 if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
331 CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
332 lcfg->lcfg_version, LUSTRE_CFG_VERSION);
336 __swab32s(&lcfg->lcfg_command);
337 __swab32s(&lcfg->lcfg_num);
338 __swab32s(&lcfg->lcfg_flags);
339 __swab64s(&lcfg->lcfg_nid);
340 __swab32s(&lcfg->lcfg_bufcount);
341 for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
342 __swab32s(&lcfg->lcfg_buflens[i]);
344 print_lustre_cfg(lcfg);
346 EXPORT_SYMBOL(lustre_swab_lustre_cfg);
348 /* used only for compatibility with old on-disk cfg_marker data */
349 struct cfg_marker32 {
356 char cm_tgtname[MTI_NAME_MAXLEN];
357 char cm_comment[MTI_NAME_MAXLEN];
360 #define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
361 (sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
363 void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
365 struct cfg_marker32 *cm32 = (struct cfg_marker32 *)marker;
368 __swab32s(&marker->cm_step);
369 __swab32s(&marker->cm_flags);
370 __swab32s(&marker->cm_vers);
372 if (size == sizeof(*cm32)) {
373 __u32 createtime, canceltime;
374 /* There was a problem with the original declaration of
375 * cfg_marker on 32-bit systems because it used time_t as
376 * a wire protocol structure, and didn't verify this in
377 * wirecheck. We now have to convert the offsets of the
378 * later fields in order to work on 32- and 64-bit systems.
380 * Fortunately, the cm_comment field has no functional use
381 * so can be sacrificed when converting the timestamp size.
383 * Overwrite fields from the end first, so they are not
384 * clobbered, and use memmove() instead of memcpy() because
385 * the source and target buffers overlap. bug 16771
387 createtime = cm32->cm_createtime;
388 canceltime = cm32->cm_canceltime;
389 memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
390 marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
391 memmove(marker->cm_tgtname, cm32->cm_tgtname,
392 sizeof(marker->cm_tgtname));
394 __swab32s(&createtime);
395 __swab32s(&canceltime);
397 marker->cm_createtime = createtime;
398 marker->cm_canceltime = canceltime;
399 CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) for target %s, converting\n",
402 __swab64s(&marker->cm_createtime);
403 __swab64s(&marker->cm_canceltime);
406 EXPORT_SYMBOL(lustre_swab_cfg_marker);