2 * $Id: dbif.c,v 1.17 2009-11-25 14:59:15 franklahm Exp $
4 * Copyright (C) Joerg Lenneis 2003
5 * Copyright (C) Frank Lahm 2009
6 * All Rights Reserved. See COPYING.
11 #endif /* HAVE_CONFIG_H */
16 #ifdef HAVE_SYS_TYPES_H
17 #include <sys/types.h>
18 #endif /* HAVE_SYS_TYPES_H */
20 #include <sys/types.h>
22 #include <sys/cdefs.h>
24 #include <atalk/logger.h>
30 #define DB_ERRLOGFILE "db_errlog"
32 static char *old_dbfiles[] = {"cnid.db", NULL};
35 static int upgrade_required(void)
41 for (i = 0; old_dbfiles[i] != NULL; i++) {
42 if ( !(stat(old_dbfiles[i], &st) < 0) ) {
46 if (errno != ENOENT) {
47 LOG(log_error, logtype_cnid, "cnid_open: Checking %s gave %s", old_dbfiles[i], strerror(errno));
55 int dbif_stamp(DBD *dbd, void *buffer, int size)
64 if ((cwd = open(".", O_RDONLY)) < 0) {
65 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
69 /* chdir to db_envhome */
70 if ((chdir(dbd->db_envhome)) != 0) {
71 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
75 if ((rc = stat(dbd->db_table[DBIF_CNID].name, &st)) < 0) {
76 LOG(log_error, logtype_cnid, "error stating database %s: %s", dbd->db_table[DBIF_CNID].name, db_strerror(rc));
79 memset(buffer, 0, size);
80 memcpy(buffer, &st.st_ctime, sizeof(st.st_ctime));
82 if ((fchdir(cwd)) != 0) {
83 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
91 DBD *dbif_init(const char *envhome, const char *filename)
95 if ( NULL == (dbd = calloc(sizeof(DBD), 1)) )
98 /* filename == NULL means in memory db */
103 dbd->db_envhome = strdup(envhome);
104 if (NULL == dbd->db_envhome) {
109 dbd->db_filename = strdup(filename);
110 if (NULL == dbd->db_filename) {
111 free(dbd->db_envhome);
117 dbd->db_table[DBIF_CNID].name = "cnid2.db";
118 dbd->db_table[DBIF_IDX_DEVINO].name = "devino.db";
119 dbd->db_table[DBIF_IDX_DIDNAME].name = "didname.db";
121 dbd->db_table[DBIF_CNID].type = DB_BTREE;
122 dbd->db_table[DBIF_IDX_DEVINO].type = DB_BTREE;
123 dbd->db_table[DBIF_IDX_DIDNAME].type = DB_BTREE;
125 dbd->db_table[DBIF_CNID].openflags = DB_CREATE;
126 dbd->db_table[DBIF_IDX_DEVINO].openflags = DB_CREATE;
127 dbd->db_table[DBIF_IDX_DIDNAME].openflags = DB_CREATE;
133 We must open the db_env with an absolute pathname, as `dbd` keeps chdir'ing, which
134 breaks e.g. bdb logfile-rotation with relative pathnames.
135 But still we use relative paths with upgrade_required() and the DB_ERRLOGFILE
136 in order to avoid creating absolute paths by copying. Both have no problem with
139 int dbif_env_open(DBD *dbd, struct db_param *dbp, uint32_t dbenv_oflags)
142 char **logfiles = NULL;
146 if ((cwd = open(".", O_RDONLY)) < 0) {
147 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
151 /* chdir to db_envhome. makes it easier checking for old db files and creating db_errlog file */
152 if ((chdir(dbd->db_envhome)) != 0) {
153 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
157 /* Refuse to do anything if this is an old version of the CNID database */
158 if (upgrade_required()) {
159 LOG(log_error, logtype_cnid, "Found version 1 of the CNID database. Please upgrade to version 2");
163 if ((dbd->db_errlog = fopen(DB_ERRLOGFILE, "a")) == NULL)
164 LOG(log_warning, logtype_cnid, "error creating/opening DB errlogfile: %s", strerror(errno));
166 if ((fchdir(cwd)) != 0) {
167 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
171 if ((ret = db_env_create(&dbd->db_env, 0))) {
172 LOG(log_error, logtype_cnid, "error creating DB environment: %s",
178 if (dbd->db_errlog != NULL) {
179 dbd->db_env->set_errfile(dbd->db_env, dbd->db_errlog);
180 dbd->db_env->set_msgfile(dbd->db_env, dbd->db_errlog);
183 if (dbenv_oflags & DB_RECOVER) {
184 dbd->db_env->set_verbose(dbd->db_env, DB_VERB_RECOVERY, 1);
185 /* Open the database for recovery using DB_PRIVATE option which is faster */
186 if ((ret = dbd->db_env->open(dbd->db_env, dbd->db_envhome, dbenv_oflags | DB_PRIVATE, 0))) {
187 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
189 dbd->db_env->close(dbd->db_env, 0);
193 dbenv_oflags = (dbenv_oflags & ~DB_RECOVER);
195 if (dbd->db_errlog != NULL)
196 fflush(dbd->db_errlog);
198 if ((ret = dbd->db_env->close(dbd->db_env, 0))) {
199 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s",
205 if ((ret = db_env_create(&dbd->db_env, 0))) {
206 LOG(log_error, logtype_cnid, "error creating DB environment after recovery: %s",
213 if ((ret = dbd->db_env->set_cachesize(dbd->db_env, 0, 1024 * dbp->cachesize, 0))) {
214 LOG(log_error, logtype_cnid, "error setting DB environment cachesize to %i: %s",
215 dbp->cachesize, db_strerror(ret));
216 dbd->db_env->close(dbd->db_env, 0);
221 if (dbd->db_errlog != NULL) {
222 dbd->db_env->set_errfile(dbd->db_env, dbd->db_errlog);
223 dbd->db_env->set_msgfile(dbd->db_env, dbd->db_errlog);
225 if ((ret = dbd->db_env->open(dbd->db_env, dbd->db_envhome, dbenv_oflags, 0))) {
226 LOG(log_error, logtype_cnid, "error opening DB environment after recovery: %s",
228 dbd->db_env->close(dbd->db_env, 0);
233 if ((ret = dbd->db_env->set_flags(dbd->db_env, DB_AUTO_COMMIT, 1))) {
234 LOG(log_error, logtype_cnid, "error setting DB_AUTO_COMMIT flag: %s",
236 dbd->db_env->close(dbd->db_env, 0);
241 if (dbp->logfile_autoremove) {
242 if (dbd->db_env->log_archive(dbd->db_env, &logfiles, 0)) {
243 LOG(log_error, logtype_cnid, "error getting list of stale logfiles: %s",
245 dbd->db_env->close(dbd->db_env, 0);
249 if (logfiles != NULL) {
250 for (file = logfiles; *file != NULL; file++) {
251 if (unlink(*file) < 0)
252 LOG(log_warning, logtype_cnid, "Error removing stale logfile %s: %s", *file, strerror(errno));
257 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 7)
258 if ((ret = dbd->db_env->log_set_config(dbd->db_env, DB_LOG_AUTO_REMOVE, 1))) {
259 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTO_REMOVE flag: %s",
261 dbd->db_env->close(dbd->db_env, 0);
266 if ((ret = dbd->db_env->set_flags(dbd->db_env, DB_LOG_AUTOREMOVE, 1))) {
267 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTOREMOVE flag: %s",
269 dbd->db_env->close(dbd->db_env, 0);
279 /* --------------- */
280 int dbif_open(DBD *dbd, struct db_param *dbp _U_, int reindex)
287 /* Try to upgrade if it's a normal on-disk database */
288 if (dbd->db_envhome) {
290 if ((cwd = open(".", O_RDONLY)) < 0) {
291 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
295 /* chdir to db_envhome. makes it easier checking for old db files and creating db_errlog file */
296 if ((chdir(dbd->db_envhome)) != 0) {
297 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
301 if ((stat(dbd->db_filename, &st)) == 0) {
302 LOG(log_debug, logtype_cnid, "See if we can upgrade the CNID database...");
303 if ((ret = db_create(&upgrade_db, dbd->db_env, 0))) {
304 LOG(log_error, logtype_cnid, "error creating handle for database: %s", db_strerror(ret));
307 if ((ret = upgrade_db->upgrade(upgrade_db, dbd->db_filename, 0))) {
308 LOG(log_error, logtype_cnid, "error upgarding database: %s", db_strerror(ret));
311 if ((ret = upgrade_db->close(upgrade_db, 0))) {
312 LOG(log_error, logtype_cnid, "error closing database: %s", db_strerror(ret));
315 if ((ret = dbd->db_env->txn_checkpoint(dbd->db_env, 0, 0, DB_FORCE))) {
316 LOG(log_error, logtype_cnid, "error forcing checkpoint: %s", db_strerror(ret));
319 LOG(log_debug, logtype_cnid, "Finished CNID database upgrade check");
322 if ((fchdir(cwd)) != 0) {
323 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
328 /* Now open databases ... */
329 for (i = 0; i != DBIF_DB_CNT; i++) {
330 if ((ret = db_create(&dbd->db_table[i].db, dbd->db_env, 0))) {
331 LOG(log_error, logtype_cnid, "error creating handle for database %s: %s",
332 dbd->db_table[i].name, db_strerror(ret));
336 if (dbd->db_table[i].flags) {
337 if ((ret = dbd->db_table[i].db->set_flags(dbd->db_table[i].db,
338 dbd->db_table[i].flags))) {
339 LOG(log_error, logtype_cnid, "error setting flags for database %s: %s",
340 dbd->db_table[i].name, db_strerror(ret));
345 if (dbd->db_table[i].db->open(dbd->db_table[i].db,
348 dbd->db_table[i].name,
349 dbd->db_table[i].type,
350 dbd->db_table[i].openflags,
352 LOG(log_error, logtype_cnid, "Cant open database");
355 if (dbd->db_errlog != NULL)
356 dbd->db_table[i].db->set_errfile(dbd->db_table[i].db, dbd->db_errlog);
358 if (reindex && i > 0) {
359 LOG(log_info, logtype_cnid, "Truncating CNID index.");
360 if ((ret = dbd->db_table[i].db->truncate(dbd->db_table[i].db, NULL, &count, 0))) {
361 LOG(log_error, logtype_cnid, "error truncating database %s: %s",
362 dbd->db_table[i].name, db_strerror(ret));
368 /* TODO: Implement CNID DB versioning info on new databases. */
370 /* Associate the secondary with the primary. */
372 LOG(log_info, logtype_cnid, "Reindexing did/name index...");
373 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[DBIF_CNID].db,
375 dbd->db_table[DBIF_IDX_DIDNAME].db,
377 (reindex) ? DB_CREATE : 0))
379 LOG(log_error, logtype_cnid, "Failed to associate didname database: %s",db_strerror(ret));
383 LOG(log_info, logtype_cnid, "... done.");
386 LOG(log_info, logtype_cnid, "Reindexing dev/ino index...");
387 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[0].db,
389 dbd->db_table[DBIF_IDX_DEVINO].db,
391 (reindex) ? DB_CREATE : 0))
393 LOG(log_error, logtype_cnid, "Failed to associate devino database: %s",db_strerror(ret));
397 LOG(log_info, logtype_cnid, "... done.");
402 /* ------------------------ */
403 static int dbif_closedb(DBD *dbd)
409 for (i = DBIF_DB_CNT -1; i >= 0; i--) {
410 if (dbd->db_table[i].db != NULL && (ret = dbd->db_table[i].db->close(dbd->db_table[i].db, 0))) {
411 LOG(log_error, logtype_cnid, "error closing database %s: %s", dbd->db_table[i].name, db_strerror(ret));
420 /* ------------------------ */
421 int dbif_close(DBD *dbd)
426 if (dbif_closedb(dbd))
429 if (dbd->db_env != NULL && (ret = dbd->db_env->close(dbd->db_env, 0))) {
430 LOG(log_error, logtype_cnid, "error closing DB environment: %s", db_strerror(ret));
433 if (dbd->db_errlog != NULL && fclose(dbd->db_errlog) == EOF) {
434 LOG(log_error, logtype_cnid, "error closing DB logfile: %s", strerror(errno));
438 free(dbd->db_filename);
448 In order to support silent database upgrades:
449 destroy env at cnid_dbd shutdown.
451 int dbif_prep_upgrade(const char *path)
456 LOG(log_debug, logtype_cnid, "Reopening BerkeleyDB environment");
458 if (NULL == (dbd = dbif_init(path, "cnid2.db")))
462 if ((cwd = open(".", O_RDONLY)) < 0) {
463 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
467 /* chdir to db_envhome. makes it easier checking for old db files and creating db_errlog file */
468 if ((chdir(dbd->db_envhome)) != 0) {
469 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
473 if ((dbd->db_errlog = fopen(DB_ERRLOGFILE, "a")) == NULL)
474 LOG(log_warning, logtype_cnid, "error creating/opening DB errlogfile: %s", strerror(errno));
476 if ((fchdir(cwd)) != 0) {
477 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
481 /* Get db_env handle */
482 if ((ret = db_env_create(&dbd->db_env, 0))) {
483 LOG(log_error, logtype_cnid, "error creating DB environment: %s", db_strerror(ret));
489 if (dbd->db_errlog != NULL) {
490 dbd->db_env->set_errfile(dbd->db_env, dbd->db_errlog);
491 dbd->db_env->set_msgfile(dbd->db_env, dbd->db_errlog);
492 dbd->db_env->set_verbose(dbd->db_env, DB_VERB_RECOVERY, 1);
495 /* Open environment with recovery */
496 if ((ret = dbd->db_env->open(dbd->db_env,
498 DB_CREATE | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | DB_RECOVER | DB_PRIVATE,
500 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
502 dbd->db_env->close(dbd->db_env, 0);
507 if (dbd->db_errlog != NULL)
508 fflush(dbd->db_errlog);
510 /* Remove logfiles */
511 if ((ret = dbd->db_env->log_archive(dbd->db_env, NULL, DB_ARCH_REMOVE))) {
512 LOG(log_error, logtype_cnid, "error removing transaction logfiles: %s", db_strerror(ret));
516 if ((ret = dbd->db_env->close(dbd->db_env, 0))) {
517 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s", db_strerror(ret));
522 LOG(log_debug, logtype_cnid, "BerkeleyDB environment recovery done.");
524 /* Get a new db_env handle and then remove environment */
525 if ((ret = db_env_create(&dbd->db_env, 0))) {
526 LOG(log_error, logtype_cnid, "error acquiring db_end handle: %s", db_strerror(ret));
530 if ((ret = dbd->db_env->remove(dbd->db_env, dbd->db_envhome, 0))) {
531 LOG(log_error, logtype_cnid, "error removing BerkeleyDB environment: %s", db_strerror(ret));
535 LOG(log_debug, logtype_cnid, "Removed BerkeleyDB environment.");
541 * The following three functions are wrappers for DB->get(), DB->put() and DB->del().
542 * All three return -1 on error. dbif_get()/dbif_del return 1 if the key was found and 0
543 * otherwise. dbif_put() returns 0 if key/val was successfully updated and 1 if
544 * the DB_NOOVERWRITE flag was specified and the key already exists.
546 * All return codes other than DB_NOTFOUND and DB_KEYEXIST from the DB->()
547 * functions are not expected and therefore error conditions.
550 int dbif_get(DBD *dbd, const int dbi, DBT *key, DBT *val, u_int32_t flags)
554 ret = dbd->db_table[dbi].db->get(dbd->db_table[dbi].db,
560 if (ret == DB_NOTFOUND)
563 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s",
564 dbd->db_table[dbi].name, db_strerror(errno));
570 /* search by secondary return primary */
571 int dbif_pget(DBD *dbd, const int dbi, DBT *key, DBT *pkey, DBT *val, u_int32_t flags)
575 ret = dbd->db_table[dbi].db->pget(dbd->db_table[dbi].db,
582 if (ret == DB_NOTFOUND || ret == DB_SECONDARY_BAD) {
586 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s",
587 dbd->db_table[dbi].name, db_strerror(errno));
593 /* -------------------------- */
594 int dbif_put(DBD *dbd, const int dbi, DBT *key, DBT *val, u_int32_t flags)
598 if (dbif_txn_begin(dbd) < 0) {
599 LOG(log_error, logtype_cnid, "error setting key/value in %s: %s",
600 dbd->db_table[dbi].name, db_strerror(errno));
604 ret = dbd->db_table[dbi].db->put(dbd->db_table[dbi].db,
611 if ((flags & DB_NOOVERWRITE) && ret == DB_KEYEXIST) {
614 LOG(log_error, logtype_cnid, "error setting key/value in %s: %s",
615 dbd->db_table[dbi].name, db_strerror(errno));
622 int dbif_del(DBD *dbd, const int dbi, DBT *key, u_int32_t flags)
626 /* For cooperation with the dbd utility and its usage of a cursor */
628 dbd->db_cur->close(dbd->db_cur);
632 if (dbif_txn_begin(dbd) < 0) {
633 LOG(log_error, logtype_cnid, "error deleting key/value from %s: %s",
634 dbd->db_table[dbi].name, db_strerror(errno));
638 ret = dbd->db_table[dbi].db->del(dbd->db_table[dbi].db,
643 if (ret == DB_NOTFOUND || ret == DB_SECONDARY_BAD)
646 LOG(log_error, logtype_cnid, "error deleting key/value from %s: %s",
647 dbd->db_table[dbi].name, db_strerror(errno));
653 int dbif_txn_begin(DBD *dbd)
657 /* If we already have an active txn, just return */
661 /* If our DBD has no env, just return (-> in memory db) */
662 if (dbd->db_env == NULL)
665 ret = dbd->db_env->txn_begin(dbd->db_env, NULL, &dbd->db_txn, 0);
668 LOG(log_error, logtype_cnid, "error starting transaction: %s", db_strerror(errno));
674 int dbif_txn_commit(DBD *dbd)
681 /* If our DBD has no env, just return (-> in memory db) */
682 if (dbd->db_env == NULL)
685 ret = dbd->db_txn->commit(dbd->db_txn, 0);
689 LOG(log_error, logtype_cnid, "error committing transaction: %s", db_strerror(errno));
695 int dbif_txn_abort(DBD *dbd)
702 /* If our DBD has no env, just return (-> in memory db) */
703 if (dbd->db_env == NULL)
706 ret = dbd->db_txn->abort(dbd->db_txn);
710 LOG(log_error, logtype_cnid, "error aborting transaction: %s", db_strerror(errno));
717 ret = 1 -> commit txn
718 ret = 0 -> abort txn -> exit!
719 anything else -> exit!
721 void dbif_txn_close(DBD *dbd, int ret)
724 if (dbif_txn_abort(dbd) < 0) {
725 LOG( log_error, logtype_cnid, "Fatal error aborting transaction. Exiting!");
728 } else if (ret == 1) {
729 ret = dbif_txn_commit(dbd);
731 LOG( log_error, logtype_cnid, "Fatal error committing transaction. Exiting!");
738 int dbif_txn_checkpoint(DBD *dbd, u_int32_t kbyte, u_int32_t min, u_int32_t flags)
741 ret = dbd->db_env->txn_checkpoint(dbd->db_env, kbyte, min, flags);
743 LOG(log_error, logtype_cnid, "error checkpointing transaction susystem: %s", db_strerror(errno));
749 int dbif_count(DBD *dbd, const int dbi, u_int32_t *count)
753 DB *db = dbd->db_table[dbi].db;
755 ret = db->stat(db, NULL, &sp, 0);
758 LOG(log_error, logtype_cnid, "error getting stat infotmation on database: %s", db_strerror(errno));
762 *count = sp->bt_ndata;
768 int dbif_copy_rootinfokey(DBD *srcdbd, DBD *destdbd)
773 memset(&key, 0, sizeof(key));
774 memset(&data, 0, sizeof(data));
776 key.data = ROOTINFO_KEY;
777 key.size = ROOTINFO_KEYLEN;
779 if ((rc = dbif_get(srcdbd, DBIF_CNID, &key, &data, 0)) <= 0) {
780 LOG(log_error, logtype_cnid, "dbif_copy_rootinfokey: Error getting rootinfo record");
784 memset(&key, 0, sizeof(key));
785 key.data = ROOTINFO_KEY;
786 key.size = ROOTINFO_KEYLEN;
788 if ((rc = dbif_put(destdbd, DBIF_CNID, &key, &data, 0))) {
789 LOG(log_error, logtype_cnid, "dbif_copy_rootinfokey: Error writing rootinfo key");
796 int dbif_dump(DBD *dbd, int dumpindexes)
799 uint32_t max = 0, count = 0, cnid, type, did, lastid;
803 DBT key = { 0 }, data = { 0 };
804 DB *db = dbd->db_table[DBIF_CNID].db;
805 char *typestring[2] = {"f", "d"};
808 printf("CNID database dump:\n");
810 rc = db->cursor(db, NULL, &cur, 0);
812 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
816 cur->c_get(cur, &key, &data, DB_FIRST);
818 /* Parse and print data */
819 memcpy(&cnid, key.data, 4);
824 /* Rootinfo node ? */
826 memcpy(&stamp, (char *)data.data + 4, sizeof(time_t));
827 memcpy(&lastid, (char *)data.data + 20, sizeof(cnid_t));
828 lastid = ntohl(lastid);
829 strftime(timebuf, sizeof(timebuf), "%b %d %Y %H:%M:%S", localtime(&stamp));
830 printf("dbd stamp: 0x%08x (%s), next free CNID: %u\n", (unsigned int)stamp, timebuf, lastid + 1);
833 memcpy(&dev, (char *)data.data + CNID_DEV_OFS, 8);
836 memcpy(&ino, (char *)data.data + CNID_INO_OFS, 8);
839 memcpy(&type, (char *)data.data + CNID_TYPE_OFS, 4);
842 memcpy(&did, (char *)data.data + CNID_DID_OFS, 4);
846 printf("id: %10u, did: %10u, type: %s, dev: 0x%llx, ino: 0x%016llx, name: %s\n",
847 cnid, did, typestring[type],
848 (long long unsigned int)dev, (long long unsigned int)ino,
849 (char *)data.data + CNID_NAME_OFS);
853 rc = cur->c_get(cur, &key, &data, DB_NEXT);
856 if (rc != DB_NOTFOUND) {
857 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
861 rc = cur->c_close(cur);
863 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(errno));
866 printf("%u CNIDs in database. Max CNID: %u.\n", count, max);
868 /* Dump indexes too ? */
870 /* DBIF_IDX_DEVINO */
871 printf("\ndev/inode index:\n");
873 db = dbd->db_table[DBIF_IDX_DEVINO].db;
874 rc = db->cursor(db, NULL, &cur, 0);
876 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
880 cur->c_get(cur, &key, &data, DB_FIRST);
882 /* Parse and print data */
885 memcpy(&cnid, data.data, CNID_LEN);
891 memcpy(&dev, key.data, CNID_DEV_LEN);
894 memcpy(&ino, (char *)key.data + CNID_DEV_LEN, CNID_INO_LEN);
897 printf("id: %10u <== dev: 0x%llx, ino: 0x%016llx\n",
898 cnid, (unsigned long long int)dev, (unsigned long long int)ino);
901 rc = cur->c_get(cur, &key, &data, DB_NEXT);
903 if (rc != DB_NOTFOUND) {
904 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
908 rc = cur->c_close(cur);
910 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(errno));
913 printf("%u items\n", count);
915 /* Now dump DBIF_IDX_DIDNAME */
916 printf("\ndid/name index:\n");
918 db = dbd->db_table[DBIF_IDX_DIDNAME].db;
919 rc = db->cursor(db, NULL, &cur, 0);
921 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
925 cur->c_get(cur, &key, &data, DB_FIRST);
927 /* Parse and print data */
930 memcpy(&cnid, data.data, CNID_LEN);
936 memcpy(&did, key.data, CNID_LEN);
939 printf("id: %10u <== did: %10u, name: %s\n", cnid, did, (char *)key.data + CNID_LEN);
942 rc = cur->c_get(cur, &key, &data, DB_NEXT);
944 if (rc != DB_NOTFOUND) {
945 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
949 rc = cur->c_close(cur);
951 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(errno));
954 printf("%u items\n", count);
961 Iterates over dbd, returning cnids.
962 Uses in-value of cnid to seek to that cnid, then gets next and return that in cnid.
963 If close=1, close cursor.
964 Return -1 on error, 0 on EOD (end-of-database), 1 if returning cnid.
966 int dbif_idwalk(DBD *dbd, cnid_t *cnid, int close)
972 static DBT key = { 0 }, data = { 0 };
973 DB *db = dbd->db_table[DBIF_CNID].db;
975 if (close && dbd->db_cur) {
976 dbd->db_cur->close(dbd->db_cur);
981 /* An dbif_del will have closed our cursor too */
982 if ( ! dbd->db_cur ) {
983 if (db->cursor(db, NULL, &dbd->db_cur, 0) != 0) {
984 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
987 flag = DB_SET_RANGE; /* This will seek to next cnid after the one just deleted */
990 key.size = sizeof(cnid_t);
994 if ((rc = dbd->db_cur->get(dbd->db_cur, &key, &data, flag)) == 0) {
995 memcpy(cnid, key.data, sizeof(cnid_t));
996 *cnid = ntohl(*cnid);
1000 if (rc != DB_NOTFOUND) {
1001 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
1002 dbd->db_cur->close(dbd->db_cur);
1008 dbd->db_cur->close(dbd->db_cur);