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b=19486 add server identifier into lu_seq_range.
[fs/lustre-release.git] / lustre / obdclass / llog_swab.c
1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=8:tabstop=8:
3  *
4  * GPL HEADER START
5  *
6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
7  *
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.
11  *
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).
17  *
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
21  *
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
24  * have any questions.
25  *
26  * GPL HEADER END
27  */
28 /*
29  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
30  * Use is subject to license terms.
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 #ifndef __KERNEL__
46 #include <liblustre.h>
47 #endif
48
49 #include <lustre_log.h>
50
51 static void print_llogd_body(struct llogd_body *d)
52 {
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_oseq: "LPX64"\n", d->lgd_logid.lgl_oseq);
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);
63 }
64
65 void lustre_swab_llogd_body (struct llogd_body *d)
66 {
67         ENTRY;
68         print_llogd_body(d);
69         __swab64s (&d->lgd_logid.lgl_oid);
70         __swab64s (&d->lgd_logid.lgl_oseq);
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);
78         print_llogd_body(d);
79         EXIT;
80 }
81 EXPORT_SYMBOL(lustre_swab_llogd_body);
82
83 void lustre_swab_llogd_conn_body (struct llogd_conn_body *d)
84 {
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_oseq);
89         __swab32s (&d->lgdc_logid.lgl_ogen);
90         __swab32s (&d->lgdc_ctxt_idx);
91 }
92 EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
93
94 void lustre_swab_ll_fid(struct ll_fid *fid)
95 {
96         __swab64s (&fid->id);
97         __swab32s (&fid->generation);
98         __swab32s (&fid->f_type);
99 }
100 EXPORT_SYMBOL(lustre_swab_ll_fid);
101
102 void lustre_swab_lu_fid(struct lu_fid *fid)
103 {
104         __swab64s (&fid->f_seq);
105         __swab32s (&fid->f_oid);
106         __swab32s (&fid->f_ver);
107 }
108 EXPORT_SYMBOL(lustre_swab_lu_fid);
109
110 void lustre_swab_lu_seq_range(struct lu_seq_range *range)
111 {
112         __swab64s (&range->lsr_start);
113         __swab64s (&range->lsr_end);
114         __swab32s (&range->lsr_index);
115         __swab32s (&range->lsr_flags);
116 }
117 EXPORT_SYMBOL(lustre_swab_lu_seq_range);
118
119 void lustre_swab_llog_rec(struct llog_rec_hdr *rec, struct llog_rec_tail *tail)
120 {
121         __swab32s(&rec->lrh_len);
122         __swab32s(&rec->lrh_index);
123         __swab32s(&rec->lrh_type);
124
125         switch (rec->lrh_type) {
126         case OST_SZ_REC: {
127                 struct llog_size_change_rec *lsc =
128                         (struct llog_size_change_rec *)rec;
129
130                 lustre_swab_ll_fid(&lsc->lsc_fid);
131                 __swab32s(&lsc->lsc_ioepoch);
132                 break;
133         }
134
135         case OST_RAID1_REC:
136                 break;
137
138         case MDS_UNLINK_REC: {
139                 struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;
140
141                 __swab64s(&lur->lur_oid);
142                 __swab32s(&lur->lur_oseq);
143                 __swab32s(&lur->lur_count);
144                 break;
145         }
146
147         case MDS_SETATTR_REC: {
148                 struct llog_setattr_rec *lsr = (struct llog_setattr_rec *)rec;
149
150                 __swab64s(&lsr->lsr_oid);
151                 __swab32s(&lsr->lsr_oseq);
152                 __swab32s(&lsr->lsr_uid);
153                 __swab32s(&lsr->lsr_gid);
154                 break;
155         }
156
157         case CHANGELOG_REC: {
158                 struct llog_changelog_rec *cr = (struct llog_changelog_rec*)rec;
159
160                 __swab16s(&cr->cr.cr_namelen);
161                 __swab16s(&cr->cr.cr_flags);
162                 __swab32s(&cr->cr.cr_type);
163                 __swab64s(&cr->cr.cr_index);
164                 __swab64s(&cr->cr.cr_prev);
165                 __swab64s(&cr->cr.cr_time);
166                 lustre_swab_lu_fid(&cr->cr.cr_tfid);
167                 lustre_swab_lu_fid(&cr->cr.cr_pfid);
168                 break;
169         }
170
171         case CHANGELOG_USER_REC: {
172                 struct llog_changelog_user_rec *cur =
173                         (struct llog_changelog_user_rec*)rec;
174
175                 __swab32s(&cur->cur_id);
176                 __swab64s(&cur->cur_endrec);
177                 break;
178         }
179
180         case MDS_SETATTR64_REC: {
181                 struct llog_setattr64_rec *lsr = (struct llog_setattr64_rec *)rec;
182
183                 __swab64s(&lsr->lsr_oid);
184                 __swab32s(&lsr->lsr_oseq);
185                 __swab32s(&lsr->lsr_uid);
186                 __swab32s(&lsr->lsr_gid);
187
188                 break;
189         }
190
191         case OBD_CFG_REC:
192                 /* these are swabbed as they are consumed */
193                 break;
194
195         case LLOG_HDR_MAGIC: {
196                 struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;
197
198                 __swab64s(&llh->llh_timestamp);
199                 __swab32s(&llh->llh_count);
200                 __swab32s(&llh->llh_bitmap_offset);
201                 __swab32s(&llh->llh_flags);
202                 __swab32s(&llh->llh_size);
203                 __swab32s(&llh->llh_cat_idx);
204                 if (tail != &llh->llh_tail) {
205                         __swab32s(&llh->llh_tail.lrt_index);
206                         __swab32s(&llh->llh_tail.lrt_len);
207                 }
208                 break;
209         }
210
211         case LLOG_LOGID_MAGIC: {
212                 struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;
213
214                 __swab64s(&lid->lid_id.lgl_oid);
215                 __swab64s(&lid->lid_id.lgl_oseq);
216                 __swab32s(&lid->lid_id.lgl_ogen);
217                 break;
218         }
219         case LLOG_PAD_MAGIC:
220                 break;
221
222         default:
223                 CERROR("Unknown llog rec type %#x swabbing rec %p\n",
224                        rec->lrh_type, rec);
225         }
226
227         if (tail) {
228                 __swab32s(&tail->lrt_len);
229                 __swab32s(&tail->lrt_index);
230         }
231 }
232 EXPORT_SYMBOL(lustre_swab_llog_rec);
233
234 static void print_llog_hdr(struct llog_log_hdr *h)
235 {
236         CDEBUG(D_OTHER, "llog header: %p\n", h);
237         CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
238         CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
239         CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
240         CDEBUG(D_OTHER, "\tllh_timestamp: "LPX64"\n", h->llh_timestamp);
241         CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
242         CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
243         CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
244         CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
245         CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
246         CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
247         CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
248 }
249
250 void lustre_swab_llog_hdr (struct llog_log_hdr *h)
251 {
252         ENTRY;
253         print_llog_hdr(h);
254
255         lustre_swab_llog_rec(&h->llh_hdr, &h->llh_tail);
256
257         print_llog_hdr(h);
258         EXIT;
259 }
260 EXPORT_SYMBOL(lustre_swab_llog_hdr);
261
262 static void print_lustre_cfg(struct lustre_cfg *lcfg)
263 {
264         int i;
265         ENTRY;
266
267         if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
268                 return;
269         CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
270         CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
271
272         CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
273         CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
274         CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
275         CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
276
277         CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
278         if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
279                 for (i = 0; i < lcfg->lcfg_bufcount; i++)
280                         CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
281                                i, lcfg->lcfg_buflens[i]);
282         EXIT;
283 }
284
285 void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
286 {
287         int i;
288         ENTRY;
289
290         __swab32s(&lcfg->lcfg_version);
291
292         if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
293                 CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
294                        lcfg->lcfg_version, LUSTRE_CFG_VERSION);
295                 EXIT;
296                 return;
297         }
298
299         __swab32s(&lcfg->lcfg_command);
300         __swab32s(&lcfg->lcfg_num);
301         __swab32s(&lcfg->lcfg_flags);
302         __swab64s(&lcfg->lcfg_nid);
303         __swab32s(&lcfg->lcfg_bufcount);
304         for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
305                 __swab32s(&lcfg->lcfg_buflens[i]);
306
307         print_lustre_cfg(lcfg);
308         EXIT;
309         return;
310 }
311 EXPORT_SYMBOL(lustre_swab_lustre_cfg);
312
313 /* used only for compatibility with old on-disk cfg_marker data */
314 struct cfg_marker32 {
315         __u32   cm_step;
316         __u32   cm_flags;
317         __u32   cm_vers;
318         __u32   padding;
319         __u32   cm_createtime;
320         __u32   cm_canceltime;
321         char    cm_tgtname[MTI_NAME_MAXLEN];
322         char    cm_comment[MTI_NAME_MAXLEN];
323 };
324
325 #define MTI_NAMELEN32    (MTI_NAME_MAXLEN - \
326         (sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
327
328 void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
329 {
330         struct cfg_marker32 *cm32 = (struct cfg_marker32*)marker;
331         ENTRY;
332
333         if (swab) {
334                 __swab32s(&marker->cm_step);
335                 __swab32s(&marker->cm_flags);
336                 __swab32s(&marker->cm_vers);
337         }
338         if (size == sizeof(*cm32)) {
339                 __u32 createtime, canceltime;
340                 /* There was a problem with the original declaration of
341                  * cfg_marker on 32-bit systems because it used time_t as
342                  * a wire protocol structure, and didn't verify this in
343                  * wirecheck.  We now have to convert the offsets of the
344                  * later fields in order to work on 32- and 64-bit systems.
345                  *
346                  * Fortunately, the cm_comment field has no functional use
347                  * so can be sacrificed when converting the timestamp size.
348                  *
349                  * Overwrite fields from the end first, so they are not
350                  * clobbered, and use memmove() instead of memcpy() because
351                  * the source and target buffers overlap.  bug 16771 */
352                 createtime = cm32->cm_createtime;
353                 canceltime = cm32->cm_canceltime;
354                 memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
355                 marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
356                 memmove(marker->cm_tgtname, cm32->cm_tgtname,
357                         sizeof(marker->cm_tgtname));
358                 if (swab) {
359                         __swab32s(&createtime);
360                         __swab32s(&canceltime);
361                 }
362                 marker->cm_createtime = createtime;
363                 marker->cm_canceltime = canceltime;
364                 CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) "
365                        "for target %s, converting\n",
366                        marker->cm_tgtname);
367         } else if (swab) {
368                 __swab64s(&marker->cm_createtime);
369                 __swab64s(&marker->cm_canceltime);
370         }
371
372         EXIT;
373         return;
374 }
375 EXPORT_SYMBOL(lustre_swab_cfg_marker);