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LU-3540 lod: update recovery thread
[fs/lustre-release.git] / lustre / obdclass / llog_swab.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
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.
9  *
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).
15  *
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
19  *
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
22  * have any questions.
23  *
24  * GPL HEADER END
25  */
26 /*
27  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
28  * Use is subject to license terms.
29  *
30  * Copyright (c) 2012, 2014, Intel Corporation.
31  */
32 /*
33  * This file is part of Lustre, http://www.lustre.org/
34  * Lustre is a trademark of Sun Microsystems, Inc.
35  *
36  * lustre/obdclass/llog_swab.c
37  *
38  * Swabbing of llog datatypes (from disk or over the wire).
39  *
40  * Author: jacob berkman  <jacob@clusterfs.com>
41  */
42
43 #define DEBUG_SUBSYSTEM S_LOG
44
45
46 #include <lustre_log.h>
47 #include <lustre_update.h>
48
49 static void print_llogd_body(struct llogd_body *d)
50 {
51         CDEBUG(D_OTHER, "llogd body: %p\n", d);
52         CDEBUG(D_OTHER, "\tlgd_logid.lgl_oi: "DOSTID"\n",
53                POSTID(&d->lgd_logid.lgl_oi));
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);
61 }
62
63 void lustre_swab_lu_fid(struct lu_fid *fid)
64 {
65         __swab64s (&fid->f_seq);
66         __swab32s (&fid->f_oid);
67         __swab32s (&fid->f_ver);
68 }
69 EXPORT_SYMBOL(lustre_swab_lu_fid);
70
71 void lustre_swab_ost_id(struct ost_id *oid)
72 {
73         if (fid_seq_is_mdt0(oid->oi.oi_seq) ||
74             fid_seq_is_default(oid->oi.oi_seq)) {
75                 __swab64s(&oid->oi.oi_id);
76                 __swab64s(&oid->oi.oi_seq);
77         } else {
78                 lustre_swab_lu_fid(&oid->oi_fid);
79         }
80 }
81 EXPORT_SYMBOL(lustre_swab_ost_id);
82
83 void lustre_swab_llog_id(struct llog_logid *log_id)
84 {
85         __swab64s(&log_id->lgl_oi.oi.oi_id);
86         __swab64s(&log_id->lgl_oi.oi.oi_seq);
87         __swab32s(&log_id->lgl_ogen);
88 }
89
90 void lustre_swab_llogd_body (struct llogd_body *d)
91 {
92         ENTRY;
93         print_llogd_body(d);
94         lustre_swab_llog_id(&d->lgd_logid);
95         __swab32s (&d->lgd_ctxt_idx);
96         __swab32s (&d->lgd_llh_flags);
97         __swab32s (&d->lgd_index);
98         __swab32s (&d->lgd_saved_index);
99         __swab32s (&d->lgd_len);
100         __swab64s (&d->lgd_cur_offset);
101         print_llogd_body(d);
102         EXIT;
103 }
104 EXPORT_SYMBOL(lustre_swab_llogd_body);
105
106 void lustre_swab_llogd_conn_body (struct llogd_conn_body *d)
107 {
108         __swab64s (&d->lgdc_gen.mnt_cnt);
109         __swab64s (&d->lgdc_gen.conn_cnt);
110         lustre_swab_llog_id(&d->lgdc_logid);
111         __swab32s (&d->lgdc_ctxt_idx);
112 }
113 EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
114
115 void lustre_swab_ll_fid(struct ll_fid *fid)
116 {
117         __swab64s (&fid->id);
118         __swab32s (&fid->generation);
119         __swab32s (&fid->f_type);
120 }
121
122 void lustre_swab_lu_seq_range(struct lu_seq_range *range)
123 {
124         __swab64s (&range->lsr_start);
125         __swab64s (&range->lsr_end);
126         __swab32s (&range->lsr_index);
127         __swab32s (&range->lsr_flags);
128 }
129 EXPORT_SYMBOL(lustre_swab_lu_seq_range);
130
131 void lustre_swab_update_ops(struct update_ops *uops, unsigned int op_count)
132 {
133         unsigned int i;
134         unsigned int j;
135
136         for (i = 0; i < op_count; i++) {
137                 lustre_swab_lu_fid(&uops->uops_op[i].uop_fid);
138                 __swab16s(&uops->uops_op[i].uop_type);
139                 __swab16s(&uops->uops_op[i].uop_param_count);
140                 for (j = 0; j < uops->uops_op[i].uop_param_count; j++)
141                         __swab16s(&uops->uops_op[i].uop_params_off[j]);
142         }
143 }
144 EXPORT_SYMBOL(lustre_swab_update_ops);
145
146 void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
147 {
148         struct llog_rec_tail *tail = NULL;
149
150         __swab32s(&rec->lrh_len);
151         __swab32s(&rec->lrh_index);
152         __swab32s(&rec->lrh_type);
153         __swab32s(&rec->lrh_id);
154
155         switch (rec->lrh_type) {
156         case OST_SZ_REC:
157         {
158                 struct llog_size_change_rec *lsc =
159                         (struct llog_size_change_rec *)rec;
160
161                 lustre_swab_ll_fid(&lsc->lsc_fid);
162                 __swab32s(&lsc->lsc_ioepoch);
163                 tail = &lsc->lsc_tail;
164                 break;
165         }
166         case MDS_UNLINK_REC:
167         {
168                 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
169
170                 __swab64s(&lur->lur_oid);
171                 __swab32s(&lur->lur_oseq);
172                 __swab32s(&lur->lur_count);
173                 tail = &lur->lur_tail;
174                 break;
175         }
176         case MDS_UNLINK64_REC:
177         {
178                 struct llog_unlink64_rec *lur =
179                         (struct llog_unlink64_rec *)rec;
180
181                 lustre_swab_lu_fid(&lur->lur_fid);
182                 __swab32s(&lur->lur_count);
183                 tail = &lur->lur_tail;
184                 break;
185         }
186         case CHANGELOG_REC:
187         {
188                 struct llog_changelog_rec *cr =
189                         (struct llog_changelog_rec *)rec;
190
191                 __swab16s(&cr->cr.cr_namelen);
192                 __swab16s(&cr->cr.cr_flags);
193                 __swab32s(&cr->cr.cr_type);
194                 __swab64s(&cr->cr.cr_index);
195                 __swab64s(&cr->cr.cr_prev);
196                 __swab64s(&cr->cr.cr_time);
197                 lustre_swab_lu_fid(&cr->cr.cr_tfid);
198                 lustre_swab_lu_fid(&cr->cr.cr_pfid);
199                 if (cr->cr.cr_flags & CLF_RENAME) {
200                         struct changelog_ext_rename *rnm =
201                                 changelog_rec_rename(&cr->cr);
202
203                         lustre_swab_lu_fid(&rnm->cr_sfid);
204                         lustre_swab_lu_fid(&rnm->cr_spfid);
205                 }
206                 /* Because the tail follows a variable-length structure we need
207                  * to compute its location at runtime */
208                 tail = (struct llog_rec_tail *)((char *)&cr->cr +
209                                                 changelog_rec_size(&cr->cr) +
210                                                 cr->cr.cr_namelen);
211                 break;
212         }
213
214         case CHANGELOG_USER_REC:
215         {
216                 struct llog_changelog_user_rec *cur =
217                         (struct llog_changelog_user_rec*)rec;
218
219                 __swab32s(&cur->cur_id);
220                 __swab64s(&cur->cur_endrec);
221                 tail = &cur->cur_tail;
222                 break;
223         }
224
225         case HSM_AGENT_REC: {
226                 struct llog_agent_req_rec *arr =
227                         (struct llog_agent_req_rec *)rec;
228
229                 __swab32s(&arr->arr_hai.hai_len);
230                 __swab32s(&arr->arr_hai.hai_action);
231                 lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
232                 lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
233                 __swab64s(&arr->arr_hai.hai_cookie);
234                 __swab64s(&arr->arr_hai.hai_extent.offset);
235                 __swab64s(&arr->arr_hai.hai_extent.length);
236                 __swab64s(&arr->arr_hai.hai_gid);
237                 /* no swabing for opaque data */
238                 /* hai_data[0]; */
239                 break;
240         }
241
242         case MDS_SETATTR64_REC:
243         {
244                 struct llog_setattr64_rec *lsr =
245                         (struct llog_setattr64_rec *)rec;
246
247                 lustre_swab_ost_id(&lsr->lsr_oi);
248                 __swab32s(&lsr->lsr_uid);
249                 __swab32s(&lsr->lsr_uid_h);
250                 __swab32s(&lsr->lsr_gid);
251                 __swab32s(&lsr->lsr_gid_h);
252                 __swab64s(&lsr->lsr_valid);
253                 tail = &lsr->lsr_tail;
254                 break;
255         }
256         case OBD_CFG_REC:
257                 /* these are swabbed as they are consumed */
258                 break;
259         case LLOG_HDR_MAGIC:
260         {
261                 struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
262
263                 __swab64s(&llh->llh_timestamp);
264                 __swab32s(&llh->llh_count);
265                 __swab32s(&llh->llh_bitmap_offset);
266                 __swab32s(&llh->llh_flags);
267                 __swab32s(&llh->llh_size);
268                 __swab32s(&llh->llh_cat_idx);
269                 tail = &llh->llh_tail;
270                 break;
271         }
272         case LLOG_LOGID_MAGIC:
273         {
274                 struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
275
276                 lustre_swab_llog_id(&lid->lid_id);
277                 tail = &lid->lid_tail;
278                 break;
279         }
280         case LLOG_GEN_REC:
281         {
282                 struct llog_gen_rec *lgr = (struct llog_gen_rec *)rec;
283
284                 __swab64s(&lgr->lgr_gen.mnt_cnt);
285                 __swab64s(&lgr->lgr_gen.conn_cnt);
286                 tail = &lgr->lgr_tail;
287                 break;
288         }
289         case LLOG_PAD_MAGIC:
290                 break;
291         case UPDATE_REC:
292         {
293                 struct llog_update_record *lur =
294                                 (struct llog_update_record *)rec;
295                 struct update_records *record = &lur->lur_update_rec;
296
297                 __swab32s(&record->ur_flags);
298                 __swab64s(&record->ur_batchid);
299                 __swab64s(&record->ur_master_transno);
300                 __swab32s(&record->ur_param_count);
301                 __swab32s(&record->ur_update_count);
302                 lustre_swab_update_ops(&record->ur_ops,
303                                        record->ur_update_count);
304
305                 /* Compute tail location. */
306                 tail = (struct llog_rec_tail *)((char *)record +
307                                                 update_records_size(record));
308                 break;
309         }
310         default:
311                 CERROR("Unknown llog rec type %#x swabbing rec %p\n",
312                        rec->lrh_type, rec);
313         }
314
315         if (tail) {
316                 __swab32s(&tail->lrt_len);
317                 __swab32s(&tail->lrt_index);
318         }
319 }
320
321 static void print_llog_hdr(struct llog_log_hdr *h)
322 {
323         CDEBUG(D_OTHER, "llog header: %p\n", h);
324         CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
325         CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
326         CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
327         CDEBUG(D_OTHER, "\tllh_timestamp: "LPX64"\n", h->llh_timestamp);
328         CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
329         CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
330         CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
331         CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
332         CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
333         CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
334         CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
335 }
336
337 void lustre_swab_llog_hdr (struct llog_log_hdr *h)
338 {
339         ENTRY;
340         print_llog_hdr(h);
341
342         lustre_swab_llog_rec(&h->llh_hdr);
343
344         print_llog_hdr(h);
345         EXIT;
346 }
347 EXPORT_SYMBOL(lustre_swab_llog_hdr);
348
349 static void print_lustre_cfg(struct lustre_cfg *lcfg)
350 {
351         int i;
352         ENTRY;
353
354         if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
355                 return;
356         CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
357         CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
358
359         CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
360         CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
361         CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
362         CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
363
364         CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
365         if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
366                 for (i = 0; i < lcfg->lcfg_bufcount; i++)
367                         CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
368                                i, lcfg->lcfg_buflens[i]);
369         EXIT;
370 }
371
372 void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
373 {
374         int i;
375         ENTRY;
376
377         __swab32s(&lcfg->lcfg_version);
378
379         if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
380                 CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
381                        lcfg->lcfg_version, LUSTRE_CFG_VERSION);
382                 EXIT;
383                 return;
384         }
385
386         __swab32s(&lcfg->lcfg_command);
387         __swab32s(&lcfg->lcfg_num);
388         __swab32s(&lcfg->lcfg_flags);
389         __swab64s(&lcfg->lcfg_nid);
390         __swab32s(&lcfg->lcfg_bufcount);
391         for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
392                 __swab32s(&lcfg->lcfg_buflens[i]);
393
394         print_lustre_cfg(lcfg);
395         EXIT;
396         return;
397 }
398
399 /* used only for compatibility with old on-disk cfg_marker data */
400 struct cfg_marker32 {
401         __u32   cm_step;
402         __u32   cm_flags;
403         __u32   cm_vers;
404         __u32   padding;
405         __u32   cm_createtime;
406         __u32   cm_canceltime;
407         char    cm_tgtname[MTI_NAME_MAXLEN];
408         char    cm_comment[MTI_NAME_MAXLEN];
409 };
410
411 #define MTI_NAMELEN32    (MTI_NAME_MAXLEN - \
412         (sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
413
414 void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
415 {
416         struct cfg_marker32 *cm32 = (struct cfg_marker32*)marker;
417         ENTRY;
418
419         if (swab) {
420                 __swab32s(&marker->cm_step);
421                 __swab32s(&marker->cm_flags);
422                 __swab32s(&marker->cm_vers);
423         }
424         if (size == sizeof(*cm32)) {
425                 __u32 createtime, canceltime;
426                 /* There was a problem with the original declaration of
427                  * cfg_marker on 32-bit systems because it used time_t as
428                  * a wire protocol structure, and didn't verify this in
429                  * wirecheck.  We now have to convert the offsets of the
430                  * later fields in order to work on 32- and 64-bit systems.
431                  *
432                  * Fortunately, the cm_comment field has no functional use
433                  * so can be sacrificed when converting the timestamp size.
434                  *
435                  * Overwrite fields from the end first, so they are not
436                  * clobbered, and use memmove() instead of memcpy() because
437                  * the source and target buffers overlap.  bug 16771 */
438                 createtime = cm32->cm_createtime;
439                 canceltime = cm32->cm_canceltime;
440                 memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
441                 marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
442                 memmove(marker->cm_tgtname, cm32->cm_tgtname,
443                         sizeof(marker->cm_tgtname));
444                 if (swab) {
445                         __swab32s(&createtime);
446                         __swab32s(&canceltime);
447                 }
448                 marker->cm_createtime = createtime;
449                 marker->cm_canceltime = canceltime;
450                 CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) "
451                        "for target %s, converting\n",
452                        marker->cm_tgtname);
453         } else if (swab) {
454                 __swab64s(&marker->cm_createtime);
455                 __swab64s(&marker->cm_canceltime);
456         }
457
458         EXIT;
459         return;
460 }