2 * Copyright (C) Joerg Lenneis 2003
3 * Copyright (C) Frank Lahm 2009
4 * All Rights Reserved. See COPYING.
9 #endif /* HAVE_CONFIG_H */
15 #include <sys/types.h>
17 #include <sys/cdefs.h>
22 #include <atalk/logger.h>
23 #include <atalk/util.h>
29 #define DB_ERRLOGFILE "db_errlog"
32 * Get the db stamp which is the st_ctime of the file "cnid2.db" and store it in buffer
34 static int dbif_stamp(DBD *dbd, void *buffer, int size)
43 if ((cwd = open(".", O_RDONLY)) < 0) {
44 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
48 /* chdir to db_envhome */
49 if ((chdir(dbd->db_envhome)) != 0) {
50 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
54 if ((rc = stat(dbd->db_table[DBIF_CNID].name, &st)) < 0) {
55 LOG(log_error, logtype_cnid, "error stating database %s: %s", dbd->db_table[DBIF_CNID].name, db_strerror(errno));
59 LOG(log_maxdebug, logtype_cnid,"stamp: %s", asctime(localtime(&st.st_ctime)));
61 memset(buffer, 0, size);
62 memcpy(buffer, &st.st_ctime, sizeof(st.st_ctime));
64 if ((fchdir(cwd)) != 0) {
65 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
73 * Inititialize rootinfo key (which has CNID 0 as key)
75 * This also "stamps" the database, which means storing st.st_ctime of the
76 * "cnid2.db" file in the rootinfo data at the DEV offset
78 * @param dbd (rw) database handle
79 * @param version (r) database version number
81 * @returns -1 on error, 0 on success
83 static int dbif_init_rootinfo(DBD *dbd, int version)
87 char buf[ROOTINFO_DATALEN];
89 LOG(log_debug, logtype_cnid, "Setting CNID database version to %u", version);
94 memset(&key, 0, sizeof(key));
95 memset(&data, 0, sizeof(data));
96 key.data = ROOTINFO_KEY;
97 key.size = ROOTINFO_KEYLEN;
99 data.size = ROOTINFO_DATALEN;
101 memcpy(buf, ROOTINFO_DATA, ROOTINFO_DATALEN);
102 memcpy(buf + CNID_DID_OFS, &v, sizeof(v));
103 if (dbif_stamp(dbd, buf + CNID_DEV_OFS, CNID_DEV_LEN) < 0)
106 if (dbif_put(dbd, DBIF_CNID, &key, &data, 0) < 0)
108 if (dbif_txn_commit(dbd) != 1) {
109 LOG(log_error, logtype_cnid, "dbif_init_rootinfo: cant commit txn");
117 * Return CNID database version number
119 * Returns version in *version
121 * @returns -1 on error, 0 if theres no rootinfo key yet, 1 if *version is returned
123 static int dbif_getversion(DBD *dbd, uint32_t *version)
128 LOG(log_maxdebug, logtype_cnid, "dbif_getversion: reading version info");
131 memset(&key, 0, sizeof(key));
132 memset(&data, 0, sizeof(data));
133 key.data = ROOTINFO_KEY;
134 key.size = ROOTINFO_KEYLEN;
136 switch (dbif_get(dbd, DBIF_CNID, &key, &data, 0)) {
138 memcpy(version, (char *)data.data + CNID_DID_OFS, sizeof(uint32_t));
139 *version = ntohl(*version);
140 LOG(log_debug, logtype_cnid, "CNID database version %u", *version);
143 case 0: /* not found */
144 LOG(log_debug, logtype_cnid, "dbif_getversion: no version info found");
148 LOG(log_error, logtype_cnid, "dbif_getversion: database error");
157 * Set CNID database version number
159 * Initializes rootinfo key as neccessary
160 * @returns -1 on error, 0 on success
162 static int dbif_setversion(DBD *dbd, uint32_t version)
168 LOG(log_debug, logtype_cnid, "Setting CNID database version to %u", version);
173 memset(&key, 0, sizeof(key));
174 memset(&data, 0, sizeof(data));
175 key.data = ROOTINFO_KEY;
176 key.size = ROOTINFO_KEYLEN;
178 if ((ret = dbif_get(dbd, DBIF_CNID, &key, &data, 0)) == -1)
181 /* No rootinfo key yet, init it */
182 if (dbif_init_rootinfo(dbd, CNID_VERSION) != 0)
185 if (dbif_get(dbd, DBIF_CNID, &key, &data, 0) == -1)
188 memcpy((char *)data.data + CNID_DID_OFS, &v, sizeof(v));
189 data.size = ROOTINFO_DATALEN;
190 if (dbif_put(dbd, DBIF_CNID, &key, &data, 0) < 0)
197 * Upgrade CNID database versions, initialize rootinfo key as as necessary in dbif_setversion()
199 * For now this does nothing, as upgrading from ver. 0 to 1 is done in dbif_open
201 #define UNINTIALIZED_DB UINT32_MAX
202 static int dbif_upgrade(DBD *dbd)
204 uint32_t version = CNID_VERSION_UNINTIALIZED_DB;
206 if (dbif_getversion(dbd, &version) == -1)
208 if (version == CNID_VERSION_UNINTIALIZED_DB) {
209 version = CNID_VERSION;
210 if (dbif_setversion(dbd, CNID_VERSION) != 0)
215 * Do upgrade stuff ...
218 /* Write current version to database */
219 if (version != CNID_VERSION) {
220 if (dbif_setversion(dbd, CNID_VERSION) != 0)
224 LOG(log_debug, logtype_cnid, "Finished CNID database version upgrade check");
229 /* --------------- */
230 static int dbif_openlog(DBD *dbd)
235 if ( ! dbd->db_filename)
240 if ((cwd = open(".", O_RDONLY)) < 0) {
241 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
245 /* chdir to db_envhome */
246 if ((chdir(dbd->db_envhome)) != 0) {
247 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
252 if ((dbd->db_errlog = fopen(DB_ERRLOGFILE, "a")) == NULL)
253 LOG(log_warning, logtype_cnid, "error creating/opening DB errlogfile: %s", strerror(errno));
255 if (dbd->db_errlog != NULL) {
256 dbd->db_env->set_errfile(dbd->db_env, dbd->db_errlog);
257 dbd->db_env->set_msgfile(dbd->db_env, dbd->db_errlog);
262 if ((fchdir(cwd)) != 0) {
263 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
271 /* --------------- */
272 static int dbif_logautorem(DBD *dbd)
276 char **logfiles = NULL;
279 if ( ! dbd->db_filename)
284 if ((cwd = open(".", O_RDONLY)) < 0) {
285 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
289 /* chdir to db_envhome */
290 if ((chdir(dbd->db_envhome)) != 0) {
291 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
296 if ((ret = dbd->db_env->log_archive(dbd->db_env, &logfiles, 0)) != 0) {
297 LOG(log_error, logtype_cnid, "error getting list of stale logfiles: %s",
299 dbd->db_env->close(dbd->db_env, 0);
305 if (logfiles != NULL) {
306 for (file = logfiles; *file != NULL; file++) {
307 if (unlink(*file) < 0)
308 LOG(log_warning, logtype_cnid, "Error removing stale logfile %s: %s", *file, strerror(errno));
315 if ((fchdir(cwd)) != 0) {
316 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
325 * Get lock on db lock file
327 * @args cmd (r) lock command:
328 * LOCK_FREE: close lockfd
329 * LOCK_UNLOCK: unlock lockm keep lockfd open
330 * LOCK_EXCL: F_WRLCK on lockfd
331 * LOCK_SHRD: F_RDLCK on lockfd
332 * @args dbpath (r) path to lockfile, only used on first call,
333 * later the stored fd is used
334 * @returns LOCK_FREE/LOCK_UNLOCK return 0 on success, -1 on error
335 * LOCK_EXCL/LOCK_SHRD return LOCK_EXCL or LOCK_SHRD respectively on
336 * success, 0 if the lock couldn't be acquired, -1 on other errors
338 int get_lock(int cmd, const char *dbpath)
340 static int lockfd = -1;
342 char lockpath[PATH_MAX];
356 return unlock(lockfd, 0, SEEK_SET, 0);
361 if ( (strlen(dbpath) + strlen(LOCKFILENAME+1)) > (PATH_MAX - 1) ) {
362 LOG(log_error, logtype_cnid, ".AppleDB pathname too long");
365 strncpy(lockpath, dbpath, PATH_MAX - 1);
366 strcat(lockpath, "/");
367 strcat(lockpath, LOCKFILENAME);
369 if ((lockfd = open(lockpath, O_RDWR | O_CREAT, 0644)) < 0) {
370 LOG(log_error, logtype_cnid, "Error opening lockfile: %s", strerror(errno));
374 if ((stat(dbpath, &st)) != 0) {
375 LOG(log_error, logtype_cnid, "Error statting lockfile: %s", strerror(errno));
379 if ((chown(lockpath, st.st_uid, st.st_gid)) != 0) {
380 LOG(log_error, logtype_cnid, "Error inheriting lockfile permissions: %s",
386 if (cmd == LOCK_EXCL)
387 ret = write_lock(lockfd, 0, SEEK_SET, 0);
389 ret = read_lock(lockfd, 0, SEEK_SET, 0);
392 if (cmd == LOCK_SHRD)
393 LOG(log_error, logtype_cnid, "Volume CNID db is locked, try again...");
397 LOG(log_debug, logtype_cnid, "get_lock: got %s lock",
398 cmd == LOCK_EXCL ? "LOCK_EXCL" : "LOCK_SHRD");
405 /* deadc0de, never get here */
409 /* --------------- */
410 DBD *dbif_init(const char *envhome, const char *filename)
414 if ( NULL == (dbd = calloc(sizeof(DBD), 1)) )
417 /* filename == NULL means in memory db */
422 dbd->db_envhome = strdup(envhome);
423 if (NULL == dbd->db_envhome) {
428 dbd->db_filename = strdup(filename);
429 if (NULL == dbd->db_filename) {
430 free(dbd->db_envhome);
436 dbd->db_table[DBIF_CNID].name = "cnid2.db";
437 dbd->db_table[DBIF_IDX_DEVINO].name = "devino.db";
438 dbd->db_table[DBIF_IDX_DIDNAME].name = "didname.db";
439 dbd->db_table[DBIF_IDX_NAME].name = "name.db";
441 dbd->db_table[DBIF_CNID].type = DB_BTREE;
442 dbd->db_table[DBIF_IDX_DEVINO].type = DB_BTREE;
443 dbd->db_table[DBIF_IDX_DIDNAME].type = DB_BTREE;
444 dbd->db_table[DBIF_IDX_NAME].type = DB_BTREE;
446 dbd->db_table[DBIF_CNID].openflags = DB_CREATE;
447 dbd->db_table[DBIF_IDX_DEVINO].openflags = DB_CREATE;
448 dbd->db_table[DBIF_IDX_DIDNAME].openflags = DB_CREATE;
449 dbd->db_table[DBIF_IDX_NAME].openflags = DB_CREATE;
451 dbd->db_table[DBIF_IDX_NAME].flags = DB_DUPSORT;
457 We must open the db_env with an absolute pathname, as `dbd` keeps chdir'ing, which
458 breaks e.g. bdb logfile-rotation with relative pathnames.
459 But still we use relative paths with DB_ERRLOGFILE
460 in order to avoid creating absolute paths by copying. Both have no problem with
463 int dbif_env_open(DBD *dbd, struct db_param *dbp, uint32_t dbenv_oflags)
467 if ((ret = db_env_create(&dbd->db_env, 0))) {
468 LOG(log_error, logtype_cnid, "error creating DB environment: %s",
474 dbd->db_param = *dbp;
476 if ((dbif_openlog(dbd)) != 0)
479 if (dbenv_oflags & DB_RECOVER) {
481 LOG(log_debug, logtype_cnid, "Running recovery");
483 dbd->db_env->set_verbose(dbd->db_env, DB_VERB_RECOVERY, 1);
484 /* Open the database for recovery using DB_PRIVATE option which is faster */
485 if ((ret = dbd->db_env->open(dbd->db_env, dbd->db_envhome, dbenv_oflags | DB_PRIVATE, 0))) {
486 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
488 dbd->db_env->close(dbd->db_env, 0);
492 dbenv_oflags = (dbenv_oflags & ~DB_RECOVER);
494 if (dbd->db_errlog != NULL)
495 fflush(dbd->db_errlog);
497 if ((ret = dbd->db_env->close(dbd->db_env, 0))) {
498 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s",
503 dbd->db_errlog = NULL;
505 if ((ret = db_env_create(&dbd->db_env, 0))) {
506 LOG(log_error, logtype_cnid, "error creating DB environment after recovery: %s",
512 if ((dbif_openlog(dbd)) != 0)
515 LOG(log_debug, logtype_cnid, "Finished recovery.");
518 if ((ret = dbd->db_env->set_cachesize(dbd->db_env, 0, 1024 * dbp->cachesize, 0))) {
519 LOG(log_error, logtype_cnid, "error setting DB environment cachesize to %i: %s",
520 dbp->cachesize, db_strerror(ret));
521 dbd->db_env->close(dbd->db_env, 0);
526 if ((ret = dbd->db_env->set_lk_max_locks(dbd->db_env, dbp->maxlocks))) {
527 LOG(log_error, logtype_cnid, "error setting DB environment maxlocks to %i: %s",
528 10000, db_strerror(ret));
529 dbd->db_env->close(dbd->db_env, 0);
534 if ((ret = dbd->db_env->set_lk_max_objects(dbd->db_env, dbp->maxlockobjs))) {
535 LOG(log_error, logtype_cnid, "error setting DB environment max lockobjects to %i: %s",
536 10000, db_strerror(ret));
537 dbd->db_env->close(dbd->db_env, 0);
542 if ((ret = dbd->db_env->open(dbd->db_env, dbd->db_envhome, dbenv_oflags, 0))) {
543 LOG(log_error, logtype_cnid, "error opening DB environment after recovery: %s",
545 dbd->db_env->close(dbd->db_env, 0);
550 if ((ret = dbd->db_env->set_flags(dbd->db_env, DB_AUTO_COMMIT, 1))) {
551 LOG(log_error, logtype_cnid, "error setting DB_AUTO_COMMIT flag: %s",
553 dbd->db_env->close(dbd->db_env, 0);
558 if (dbp->logfile_autoremove) {
559 if ((dbif_logautorem(dbd)) != 0)
562 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 7)
563 if ((ret = dbd->db_env->log_set_config(dbd->db_env, DB_LOG_AUTO_REMOVE, 1))) {
564 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTO_REMOVE flag: %s",
566 dbd->db_env->close(dbd->db_env, 0);
571 if ((ret = dbd->db_env->set_flags(dbd->db_env, DB_LOG_AUTOREMOVE, 1))) {
572 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTOREMOVE flag: %s",
574 dbd->db_env->close(dbd->db_env, 0);
584 /* --------------- */
585 int dbif_open(DBD *dbd, struct db_param *dbp, int reindex)
592 /* Try to upgrade if it's a normal on-disk database */
593 if (dbd->db_envhome) {
595 if ((cwd = open(".", O_RDONLY)) < 0) {
596 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
600 /* chdir to db_envhome. makes it easier checking for old db files and creating db_errlog file */
601 if ((chdir(dbd->db_envhome)) != 0) {
602 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
606 if ((stat(dbd->db_filename, &st)) == 0) {
607 LOG(log_debug, logtype_cnid, "See if we can upgrade the CNID database...");
608 if ((ret = db_create(&upgrade_db, dbd->db_env, 0))) {
609 LOG(log_error, logtype_cnid, "error creating handle for database: %s", db_strerror(ret));
612 if ((ret = upgrade_db->upgrade(upgrade_db, dbd->db_filename, 0))) {
613 LOG(log_error, logtype_cnid, "error upgarding database: %s", db_strerror(ret));
616 if ((ret = upgrade_db->close(upgrade_db, 0))) {
617 LOG(log_error, logtype_cnid, "error closing database: %s", db_strerror(ret));
620 if ((ret = dbd->db_env->txn_checkpoint(dbd->db_env, 0, 0, DB_FORCE))) {
621 LOG(log_error, logtype_cnid, "error forcing checkpoint: %s", db_strerror(ret));
624 LOG(log_debug, logtype_cnid, "Finished BerkeleyBD upgrade check");
627 if ((fchdir(cwd)) != 0) {
628 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
633 /* Now open databases ... */
634 for (i = 0; i != DBIF_DB_CNT; i++) {
635 if ((ret = db_create(&dbd->db_table[i].db, dbd->db_env, 0))) {
636 LOG(log_error, logtype_cnid, "error creating handle for database %s: %s",
637 dbd->db_table[i].name, db_strerror(ret));
641 if (dbd->db_table[i].flags) {
642 if ((ret = dbd->db_table[i].db->set_flags(dbd->db_table[i].db,
643 dbd->db_table[i].flags))) {
644 LOG(log_error, logtype_cnid, "error setting flags for database %s: %s",
645 dbd->db_table[i].name, db_strerror(ret));
650 if ( ! dbd->db_env) { /* In memory db */
651 if ((ret = dbd->db_table[i].db->set_cachesize(dbd->db_table[i].db,
654 4)) /* split in 4 memory chunks */
656 LOG(log_error, logtype_cnid, "error setting cachesize %u KB for database %s: %s",
657 dbp->cachesize / 1024, dbd->db_table[i].name, db_strerror(ret));
662 if (dbd->db_table[i].db->open(dbd->db_table[i].db,
665 dbd->db_table[i].name,
666 dbd->db_table[i].type,
667 dbd->db_table[i].openflags,
669 LOG(log_error, logtype_cnid, "Cant open database");
673 if (reindex && i > 0) {
674 LOG(log_info, logtype_cnid, "Truncating CNID index.");
675 if ((ret = dbd->db_table[i].db->truncate(dbd->db_table[i].db, NULL, &count, 0))) {
676 LOG(log_error, logtype_cnid, "error truncating database %s: %s",
677 dbd->db_table[i].name, db_strerror(ret));
683 /* TODO: Implement CNID DB versioning info on new databases. */
685 /* Associate the secondary with the primary. */
687 LOG(log_info, logtype_cnid, "Reindexing did/name index...");
688 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[DBIF_CNID].db,
690 dbd->db_table[DBIF_IDX_DIDNAME].db,
692 (reindex) ? DB_CREATE : 0))
694 LOG(log_error, logtype_cnid, "Failed to associate didname database: %s",db_strerror(ret));
698 LOG(log_info, logtype_cnid, "... done.");
701 LOG(log_info, logtype_cnid, "Reindexing dev/ino index...");
702 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[0].db,
704 dbd->db_table[DBIF_IDX_DEVINO].db,
706 (reindex) ? DB_CREATE : 0))
708 LOG(log_error, logtype_cnid, "Failed to associate devino database: %s",db_strerror(ret));
712 LOG(log_info, logtype_cnid, "... done.");
715 LOG(log_info, logtype_cnid, "Reindexing name index...");
718 * Upgrading from version 0 to 1 requires adding the name index below which
719 * must be done by specifying the DB_CREATE flag
721 uint32_t version = CNID_VERSION;
722 if (dbd->db_envhome && !reindex) {
723 if (dbif_getversion(dbd, &version) == -1)
727 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[0].db,
729 dbd->db_table[DBIF_IDX_NAME].db,
733 ((CNID_VERSION == CNID_VERSION_1) && (version == CNID_VERSION_0)))
734 ? DB_CREATE : 0)) != 0) {
735 LOG(log_error, logtype_cnid, "Failed to associate name index: %s", db_strerror(ret));
739 LOG(log_info, logtype_cnid, "... done.");
741 if ((dbd->db_envhome) && ((ret = dbif_upgrade(dbd)) != 0)) {
742 LOG(log_error, logtype_cnid, "Error upgrading CNID database to version %d", CNID_VERSION);
749 /* ------------------------ */
750 static int dbif_closedb(DBD *dbd)
756 for (i = DBIF_DB_CNT -1; i >= 0; i--) {
757 if (dbd->db_table[i].db != NULL && (ret = dbd->db_table[i].db->close(dbd->db_table[i].db, 0))) {
758 LOG(log_error, logtype_cnid, "error closing database %s: %s", dbd->db_table[i].name, db_strerror(ret));
767 /* ------------------------ */
768 int dbif_close(DBD *dbd)
773 if (dbif_closedb(dbd))
776 if (dbd->db_env != NULL && (ret = dbd->db_env->close(dbd->db_env, 0))) {
777 LOG(log_error, logtype_cnid, "error closing DB environment: %s", db_strerror(ret));
780 if (dbd->db_errlog != NULL && fclose(dbd->db_errlog) == EOF) {
781 LOG(log_error, logtype_cnid, "error closing DB logfile: %s", strerror(errno));
785 free(dbd->db_filename);
795 In order to support silent database upgrades:
796 destroy env at cnid_dbd shutdown.
798 int dbif_env_remove(const char *path)
803 LOG(log_debug, logtype_cnid, "Reopening BerkeleyDB environment");
805 if (NULL == (dbd = dbif_init(path, "cnid2.db")))
808 /* Get db_env handle */
809 if ((ret = db_env_create(&dbd->db_env, 0))) {
810 LOG(log_error, logtype_cnid, "error creating DB environment: %s", db_strerror(ret));
815 if ((dbif_openlog(dbd)) != 0)
818 /* Open environment with recovery */
819 if ((ret = dbd->db_env->open(dbd->db_env,
821 DB_CREATE | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | DB_RECOVER | DB_PRIVATE,
823 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
825 dbd->db_env->close(dbd->db_env, 0);
830 if (dbd->db_errlog != NULL)
831 fflush(dbd->db_errlog);
833 /* Remove logfiles */
834 if ((ret = dbd->db_env->log_archive(dbd->db_env, NULL, DB_ARCH_REMOVE))) {
835 LOG(log_error, logtype_cnid, "error removing transaction logfiles: %s", db_strerror(ret));
839 if ((ret = dbd->db_env->close(dbd->db_env, 0))) {
840 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s", db_strerror(ret));
845 LOG(log_debug, logtype_cnid, "BerkeleyDB environment recovery done.");
847 /* Get a new db_env handle and then remove environment */
848 if ((ret = db_env_create(&dbd->db_env, 0))) {
849 LOG(log_error, logtype_cnid, "error acquiring db_end handle: %s", db_strerror(ret));
853 if ((ret = dbd->db_env->remove(dbd->db_env, dbd->db_envhome, 0))) {
854 LOG(log_error, logtype_cnid, "error removing BerkeleyDB environment: %s", db_strerror(ret));
858 LOG(log_debug, logtype_cnid, "Removed BerkeleyDB environment.");
864 * The following three functions are wrappers for DB->get(), DB->put() and DB->del().
865 * All three return -1 on error. dbif_get()/dbif_del return 1 if the key was found and 0
866 * otherwise. dbif_put() returns 0 if key/val was successfully updated and 1 if
867 * the DB_NOOVERWRITE flag was specified and the key already exists.
869 * All return codes other than DB_NOTFOUND and DB_KEYEXIST from the DB->()
870 * functions are not expected and therefore error conditions.
873 int dbif_get(DBD *dbd, const int dbi, DBT *key, DBT *val, u_int32_t flags)
877 ret = dbd->db_table[dbi].db->get(dbd->db_table[dbi].db,
883 if (ret == DB_NOTFOUND)
886 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s",
887 dbd->db_table[dbi].name, db_strerror(ret));
893 /* search by secondary return primary */
894 int dbif_pget(DBD *dbd, const int dbi, DBT *key, DBT *pkey, DBT *val, u_int32_t flags)
898 ret = dbd->db_table[dbi].db->pget(dbd->db_table[dbi].db,
905 if (ret == DB_NOTFOUND || ret == DB_SECONDARY_BAD) {
909 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s",
910 dbd->db_table[dbi].name, db_strerror(ret));
916 /* -------------------------- */
917 int dbif_put(DBD *dbd, const int dbi, DBT *key, DBT *val, u_int32_t flags)
921 if (dbif_txn_begin(dbd) < 0) {
922 LOG(log_error, logtype_cnid, "error setting key/value in %s", dbd->db_table[dbi].name);
926 ret = dbd->db_table[dbi].db->put(dbd->db_table[dbi].db,
934 if ((flags & DB_NOOVERWRITE) && ret == DB_KEYEXIST) {
937 LOG(log_error, logtype_cnid, "error setting key/value in %s: %s",
938 dbd->db_table[dbi].name, db_strerror(ret));
945 int dbif_del(DBD *dbd, const int dbi, DBT *key, u_int32_t flags)
949 /* For cooperation with the dbd utility and its usage of a cursor */
951 dbd->db_cur->close(dbd->db_cur);
955 if (dbif_txn_begin(dbd) < 0) {
956 LOG(log_error, logtype_cnid, "error deleting key/value from %s", dbd->db_table[dbi].name);
960 ret = dbd->db_table[dbi].db->del(dbd->db_table[dbi].db,
965 if (ret == DB_NOTFOUND) {
966 LOG(log_debug, logtype_cnid, "key not found");
970 LOG(log_error, logtype_cnid, "error deleting key/value from %s: %s",
971 dbd->db_table[dbi].name, db_strerror(ret));
978 * Search the database by name
980 * @param resbuf (w) buffer for search results CNIDs, maxsize is assumed to be
981 * DBD_MAX_SRCH_RSLTS * sizefof(cnid_t)
983 * @returns -1 on error, 0 when nothing found, else the number of matches
985 int dbif_search(DBD *dbd, DBT *key, char *resbuf)
991 char *cnids = resbuf;
993 char *namebkp = key->data;
994 int namelenbkp = key->size;
996 memset(&pkey, 0, sizeof(DBT));
997 memset(&data, 0, sizeof(DBT));
1000 ret = dbd->db_table[DBIF_IDX_NAME].db->cursor(dbd->db_table[DBIF_IDX_NAME].db,
1005 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(ret));
1010 ret = cursorp->pget(cursorp, key, &pkey, &data, DB_SET_RANGE);
1011 while (count < DBD_MAX_SRCH_RSLTS && ret != DB_NOTFOUND) {
1012 if (!((namelenbkp <= key->size) && (strncmp(namebkp, key->data, namelenbkp) == 0)))
1015 memcpy(cnids, pkey.data, sizeof(cnid_t));
1016 memcpy(&cnid, pkey.data, sizeof(cnid_t));
1017 cnids += sizeof(cnid_t);
1018 LOG(log_debug, logtype_cnid, "match: CNID %" PRIu32, ntohl(cnid));
1020 ret = cursorp->pget(cursorp, key, &pkey, &data, DB_NEXT);
1026 if (cursorp != NULL)
1027 cursorp->close(cursorp);
1031 int dbif_txn_begin(DBD *dbd)
1035 /* If we already have an active txn, just return */
1039 /* If our DBD has no env, just return (-> in memory db) */
1040 if (dbd->db_env == NULL)
1043 ret = dbd->db_env->txn_begin(dbd->db_env, NULL, &dbd->db_txn, 0);
1046 LOG(log_error, logtype_cnid, "error starting transaction: %s", db_strerror(ret));
1052 int dbif_txn_commit(DBD *dbd)
1059 /* If our DBD has no env, just return (-> in memory db) */
1060 if (dbd->db_env == NULL)
1063 ret = dbd->db_txn->commit(dbd->db_txn, 0);
1067 LOG(log_error, logtype_cnid, "error committing transaction: %s", db_strerror(ret));
1073 int dbif_txn_abort(DBD *dbd)
1080 /* If our DBD has no env, just return (-> in memory db) */
1081 if (dbd->db_env == NULL)
1084 ret = dbd->db_txn->abort(dbd->db_txn);
1088 LOG(log_error, logtype_cnid, "error aborting transaction: %s", db_strerror(ret));
1095 ret = 1 -> commit txn if db_param.txn_frequency
1096 ret = 0 -> abort txn db_param.txn_frequency -> exit!
1097 anything else -> exit!
1099 @returns 0 on success (abort or commit), -1 on error
1101 int dbif_txn_close(DBD *dbd, int ret)
1104 if (dbif_txn_abort(dbd) < 0) {
1105 LOG( log_error, logtype_cnid, "Fatal error aborting transaction. Exiting!");
1108 } else if (ret == 1) {
1109 ret = dbif_txn_commit(dbd);
1111 LOG( log_error, logtype_cnid, "Fatal error committing transaction. Exiting!");
1121 int dbif_txn_checkpoint(DBD *dbd, u_int32_t kbyte, u_int32_t min, u_int32_t flags)
1124 ret = dbd->db_env->txn_checkpoint(dbd->db_env, kbyte, min, flags);
1126 LOG(log_error, logtype_cnid, "error checkpointing transaction susystem: %s", db_strerror(ret));
1132 int dbif_count(DBD *dbd, const int dbi, u_int32_t *count)
1136 DB *db = dbd->db_table[dbi].db;
1138 ret = db->stat(db, NULL, &sp, 0);
1141 LOG(log_error, logtype_cnid, "error getting stat infotmation on database: %s", db_strerror(ret));
1145 *count = sp->bt_ndata;
1151 int dbif_copy_rootinfokey(DBD *srcdbd, DBD *destdbd)
1156 memset(&key, 0, sizeof(key));
1157 memset(&data, 0, sizeof(data));
1159 key.data = ROOTINFO_KEY;
1160 key.size = ROOTINFO_KEYLEN;
1162 if ((rc = dbif_get(srcdbd, DBIF_CNID, &key, &data, 0)) <= 0) {
1163 LOG(log_error, logtype_cnid, "dbif_copy_rootinfokey: Error getting rootinfo record");
1167 memset(&key, 0, sizeof(key));
1168 key.data = ROOTINFO_KEY;
1169 key.size = ROOTINFO_KEYLEN;
1171 if ((rc = dbif_put(destdbd, DBIF_CNID, &key, &data, 0))) {
1172 LOG(log_error, logtype_cnid, "dbif_copy_rootinfokey: Error writing rootinfo key");
1179 int dbif_dump(DBD *dbd, int dumpindexes)
1182 uint32_t max = 0, count = 0, cnid, type, did, lastid, version;
1186 DBT key = { 0 }, data = { 0 };
1187 DB *db = dbd->db_table[DBIF_CNID].db;
1188 char *typestring[2] = {"f", "d"};
1191 printf("CNID database dump:\n");
1193 rc = db->cursor(db, NULL, &cur, 0);
1195 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1199 cur->c_get(cur, &key, &data, DB_FIRST);
1201 /* Parse and print data */
1202 memcpy(&cnid, key.data, 4);
1207 /* Rootinfo node ? */
1209 memcpy(&stamp, (char *)data.data + CNID_DEV_OFS, sizeof(time_t));
1210 memcpy(&lastid, (char *)data.data + CNID_TYPE_OFS, CNID_TYPE_LEN);
1211 lastid = ntohl(lastid);
1212 memcpy(&version, (char *)data.data + CNID_DID_OFS, CNID_DID_LEN);
1213 version = ntohl(version);
1215 strftime(timebuf, sizeof(timebuf), "%b %d %Y %H:%M:%S", localtime(&stamp));
1216 printf("CNID db version: %u, dbd stamp: 0x%08x (%s), next free CNID: %u\n",
1217 version, (unsigned int)stamp, timebuf, lastid + 1);
1220 memcpy(&dev, (char *)data.data + CNID_DEV_OFS, 8);
1223 memcpy(&ino, (char *)data.data + CNID_INO_OFS, 8);
1226 memcpy(&type, (char *)data.data + CNID_TYPE_OFS, 4);
1229 memcpy(&did, (char *)data.data + CNID_DID_OFS, 4);
1233 printf("id: %10u, did: %10u, type: %s, dev: 0x%llx, ino: 0x%016llx, name: %s\n",
1234 cnid, did, typestring[type],
1235 (long long unsigned int)dev, (long long unsigned int)ino,
1236 (char *)data.data + CNID_NAME_OFS);
1240 rc = cur->c_get(cur, &key, &data, DB_NEXT);
1243 if (rc != DB_NOTFOUND) {
1244 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1248 rc = cur->c_close(cur);
1250 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(rc));
1253 printf("%u CNIDs in database. Max CNID: %u.\n", count, max);
1255 /* Dump indexes too ? */
1257 /* DBIF_IDX_DEVINO */
1258 printf("\ndev/inode index:\n");
1260 db = dbd->db_table[DBIF_IDX_DEVINO].db;
1261 rc = db->cursor(db, NULL, &cur, 0);
1263 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1267 cur->c_get(cur, &key, &data, DB_FIRST);
1269 /* Parse and print data */
1272 memcpy(&cnid, data.data, CNID_LEN);
1278 memcpy(&dev, key.data, CNID_DEV_LEN);
1281 memcpy(&ino, (char *)key.data + CNID_DEV_LEN, CNID_INO_LEN);
1284 printf("id: %10u <== dev: 0x%llx, ino: 0x%016llx\n",
1285 cnid, (unsigned long long int)dev, (unsigned long long int)ino);
1288 rc = cur->c_get(cur, &key, &data, DB_NEXT);
1290 if (rc != DB_NOTFOUND) {
1291 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1295 rc = cur->c_close(cur);
1297 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(rc));
1300 printf("%u items\n", count);
1302 /* Now dump DBIF_IDX_DIDNAME */
1303 printf("\ndid/name index:\n");
1305 db = dbd->db_table[DBIF_IDX_DIDNAME].db;
1306 rc = db->cursor(db, NULL, &cur, 0);
1308 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1312 cur->c_get(cur, &key, &data, DB_FIRST);
1314 /* Parse and print data */
1317 memcpy(&cnid, data.data, CNID_LEN);
1323 memcpy(&did, key.data, CNID_LEN);
1326 printf("id: %10u <== did: %10u, name: %s\n", cnid, did, (char *)key.data + CNID_LEN);
1329 rc = cur->c_get(cur, &key, &data, DB_NEXT);
1331 if (rc != DB_NOTFOUND) {
1332 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1336 rc = cur->c_close(cur);
1338 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(rc));
1341 printf("%u items\n", count);
1348 Iterates over dbd, returning cnids.
1349 Uses in-value of cnid to seek to that cnid, then gets next and return that in cnid.
1350 If close=1, close cursor.
1351 Return -1 on error, 0 on EOD (end-of-database), 1 if returning cnid.
1353 int dbif_idwalk(DBD *dbd, cnid_t *cnid, int close)
1359 static DBT key = { 0 }, data = { 0 };
1360 DB *db = dbd->db_table[DBIF_CNID].db;
1364 dbd->db_cur->close(dbd->db_cur);
1370 /* An dbif_del will have closed our cursor too */
1371 if ( ! dbd->db_cur ) {
1372 if ((rc = db->cursor(db, NULL, &dbd->db_cur, 0)) != 0) {
1373 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1376 flag = DB_SET_RANGE; /* This will seek to next cnid after the one just deleted */
1379 key.size = sizeof(cnid_t);
1383 if ((rc = dbd->db_cur->get(dbd->db_cur, &key, &data, flag)) == 0) {
1384 memcpy(cnid, key.data, sizeof(cnid_t));
1385 *cnid = ntohl(*cnid);
1389 if (rc != DB_NOTFOUND) {
1390 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1391 dbd->db_cur->close(dbd->db_cur);
1397 dbd->db_cur->close(dbd->db_cur);