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>
18 #include <arpa/inet.h>
22 #include <atalk/logger.h>
23 #include <atalk/util.h>
24 #include <atalk/errchk.h>
30 #define DB_ERRLOGFILE "db_errlog"
33 * Get the db stamp which is the st_ctime of the file "cnid2.db" and store it in buffer
35 static int dbif_stamp(DBD *dbd, void *buffer, int size)
45 if ((cwd = open(".", O_RDONLY)) < 0) {
46 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
50 /* chdir to db_envhome */
51 if ((chdir(dbd->db_envhome)) != 0) {
52 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
56 if (stat(dbd->db_table[DBIF_CNID].name, &st) < 0) {
57 LOG(log_error, logtype_cnid, "error stating database %s: %s", dbd->db_table[DBIF_CNID].name, db_strerror(errno));
61 LOG(log_maxdebug, logtype_cnid,"stamp: %s", asctime(localtime(&st.st_ctime)));
63 memset(buffer, 0, size);
64 memcpy(buffer, &st.st_ctime, sizeof(st.st_ctime));
68 if (fchdir(cwd) != 0) {
69 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
78 * Inititialize rootinfo key (which has CNID 0 as key)
80 * This also "stamps" the database, which means storing st.st_ctime of the
81 * "cnid2.db" file in the rootinfo data at the DEV offset
83 * @param dbd (rw) database handle
84 * @param version (r) database version number
86 * @returns -1 on error, 0 on success
88 static int dbif_init_rootinfo(DBD *dbd, int version)
92 char buf[ROOTINFO_DATALEN];
94 LOG(log_debug, logtype_cnid, "Setting CNID database version to %u", version);
99 memset(&key, 0, sizeof(key));
100 memset(&data, 0, sizeof(data));
101 key.data = ROOTINFO_KEY;
102 key.size = ROOTINFO_KEYLEN;
104 data.size = ROOTINFO_DATALEN;
106 memcpy(buf, ROOTINFO_DATA, ROOTINFO_DATALEN);
107 memcpy(buf + CNID_DID_OFS, &v, sizeof(v));
108 if (dbif_stamp(dbd, buf + CNID_DEV_OFS, CNID_DEV_LEN) < 0)
111 if (dbif_put(dbd, DBIF_CNID, &key, &data, 0) < 0)
113 if (dbif_txn_commit(dbd) != 1) {
114 LOG(log_error, logtype_cnid, "dbif_init_rootinfo: cant commit txn");
122 * Return CNID database version number
124 * Returns version in *version
126 * @returns -1 on error, 0 if theres no rootinfo key yet, 1 if *version is returned
128 static int dbif_getversion(DBD *dbd, uint32_t *version)
133 LOG(log_maxdebug, logtype_cnid, "dbif_getversion: reading version info");
136 memset(&key, 0, sizeof(key));
137 memset(&data, 0, sizeof(data));
138 key.data = ROOTINFO_KEY;
139 key.size = ROOTINFO_KEYLEN;
141 switch (dbif_get(dbd, DBIF_CNID, &key, &data, 0)) {
143 memcpy(version, (char *)data.data + CNID_DID_OFS, sizeof(uint32_t));
144 *version = ntohl(*version);
145 LOG(log_debug, logtype_cnid, "CNID database version %u", *version);
148 case 0: /* not found */
149 LOG(log_debug, logtype_cnid, "dbif_getversion: no version info found");
153 LOG(log_error, logtype_cnid, "dbif_getversion: database error");
162 * Set CNID database version number
164 * Initializes rootinfo key as neccessary
165 * @returns -1 on error, 0 on success
167 static int dbif_setversion(DBD *dbd, uint32_t version)
173 LOG(log_debug, logtype_cnid, "Setting CNID database version to %u", version);
178 memset(&key, 0, sizeof(key));
179 memset(&data, 0, sizeof(data));
180 key.data = ROOTINFO_KEY;
181 key.size = ROOTINFO_KEYLEN;
183 if ((ret = dbif_get(dbd, DBIF_CNID, &key, &data, 0)) == -1)
186 /* No rootinfo key yet, init it */
187 if (dbif_init_rootinfo(dbd, CNID_VERSION) != 0)
190 if (dbif_get(dbd, DBIF_CNID, &key, &data, 0) == -1)
193 memcpy((char *)data.data + CNID_DID_OFS, &v, sizeof(v));
194 data.size = ROOTINFO_DATALEN;
195 if (dbif_put(dbd, DBIF_CNID, &key, &data, 0) < 0)
202 * Upgrade CNID database versions, initialize rootinfo key as as necessary in dbif_setversion()
204 * For now this does nothing, as upgrading from ver. 0 to 1 is done in dbif_open
206 #define UNINTIALIZED_DB UINT32_MAX
207 static int dbif_upgrade(DBD *dbd)
209 uint32_t version = CNID_VERSION_UNINTIALIZED_DB;
211 if (dbif_getversion(dbd, &version) == -1)
213 if (version == CNID_VERSION_UNINTIALIZED_DB) {
214 version = CNID_VERSION;
215 if (dbif_setversion(dbd, CNID_VERSION) != 0)
220 * Do upgrade stuff ...
223 /* Write current version to database */
224 if (version != CNID_VERSION) {
225 if (dbif_setversion(dbd, CNID_VERSION) != 0)
229 LOG(log_debug, logtype_cnid, "Finished CNID database version upgrade check");
234 /* --------------- */
235 static int dbif_openlog(DBD *dbd)
240 if ( ! dbd->db_filename)
245 if ((cwd = open(".", O_RDONLY)) < 0) {
246 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
250 /* chdir to db_envhome */
251 if ((chdir(dbd->db_envhome)) != 0) {
252 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
257 if ((dbd->db_errlog = fopen(DB_ERRLOGFILE, "a")) == NULL)
258 LOG(log_warning, logtype_cnid, "error creating/opening DB errlogfile: %s", strerror(errno));
260 if (dbd->db_errlog != NULL) {
261 dbd->db_env->set_errfile(dbd->db_env, dbd->db_errlog);
262 dbd->db_env->set_msgfile(dbd->db_env, dbd->db_errlog);
267 if ((fchdir(cwd)) != 0) {
268 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
276 /* --------------- */
277 static int dbif_logautorem(DBD *dbd)
281 char **logfiles = NULL;
284 if ( ! dbd->db_filename)
289 if ((cwd = open(".", O_RDONLY)) < 0) {
290 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
294 /* chdir to db_envhome */
295 if ((chdir(dbd->db_envhome)) != 0) {
296 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
301 if ((ret = dbd->db_env->log_archive(dbd->db_env, &logfiles, 0)) != 0) {
302 LOG(log_error, logtype_cnid, "error getting list of stale logfiles: %s",
304 dbd->db_env->close(dbd->db_env, 0);
310 if (logfiles != NULL) {
311 for (file = logfiles; *file != NULL; file++) {
312 if (unlink(*file) < 0)
313 LOG(log_warning, logtype_cnid, "Error removing stale logfile %s: %s", *file, strerror(errno));
320 if ((fchdir(cwd)) != 0) {
321 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
330 * Get lock on db lock file
332 * @args cmd (r) lock command:
333 * LOCK_FREE: close lockfd
334 * LOCK_UNLOCK: unlock lockm keep lockfd open
335 * LOCK_EXCL: F_WRLCK on lockfd
336 * LOCK_SHRD: F_RDLCK on lockfd
337 * @args dbpath (r) path to lockfile, only used on first call,
338 * later the stored fd is used
339 * @returns LOCK_FREE/LOCK_UNLOCK return 0 on success, -1 on error
340 * LOCK_EXCL/LOCK_SHRD return LOCK_EXCL or LOCK_SHRD respectively on
341 * success, 0 if the lock couldn't be acquired, -1 on other errors
343 int get_lock(int cmd, const char *dbpath)
345 static int lockfd = -1;
347 char lockpath[PATH_MAX];
361 return unlock(lockfd, 0, SEEK_SET, 0);
366 if ( (strlen(dbpath) + strlen(LOCKFILENAME+1)) > (PATH_MAX - 1) ) {
367 LOG(log_error, logtype_cnid, ".AppleDB pathname too long");
370 strncpy(lockpath, dbpath, PATH_MAX - 1);
371 strcat(lockpath, "/");
372 strcat(lockpath, LOCKFILENAME);
374 if ((lockfd = open(lockpath, O_RDWR | O_CREAT, 0644)) < 0) {
375 LOG(log_error, logtype_cnid, "Error opening lockfile: %s", strerror(errno));
379 if ((stat(dbpath, &st)) != 0) {
380 LOG(log_error, logtype_cnid, "Error statting lockfile: %s", strerror(errno));
384 if ((chown(lockpath, st.st_uid, st.st_gid)) != 0) {
385 LOG(log_error, logtype_cnid, "Error inheriting lockfile permissions: %s",
391 if (cmd == LOCK_EXCL)
392 ret = write_lock(lockfd, 0, SEEK_SET, 0);
394 ret = read_lock(lockfd, 0, SEEK_SET, 0);
397 if (cmd == LOCK_SHRD)
398 LOG(log_error, logtype_cnid, "Volume CNID db is locked, try again...");
402 LOG(log_debug, logtype_cnid, "get_lock: got %s lock",
403 cmd == LOCK_EXCL ? "LOCK_EXCL" : "LOCK_SHRD");
410 /* deadc0de, never get here */
414 /* --------------- */
415 DBD *dbif_init(const char *envhome, const char *filename)
419 if ( NULL == (dbd = calloc(sizeof(DBD), 1)) )
422 /* filename == NULL means in memory db */
427 dbd->db_envhome = strdup(envhome);
428 if (NULL == dbd->db_envhome) {
433 dbd->db_filename = strdup(filename);
434 if (NULL == dbd->db_filename) {
435 free(dbd->db_envhome);
441 dbd->db_table[DBIF_CNID].name = "cnid2.db";
442 dbd->db_table[DBIF_IDX_DEVINO].name = "devino.db";
443 dbd->db_table[DBIF_IDX_DIDNAME].name = "didname.db";
444 dbd->db_table[DBIF_IDX_NAME].name = "name.db";
446 dbd->db_table[DBIF_CNID].type = DB_BTREE;
447 dbd->db_table[DBIF_IDX_DEVINO].type = DB_BTREE;
448 dbd->db_table[DBIF_IDX_DIDNAME].type = DB_BTREE;
449 dbd->db_table[DBIF_IDX_NAME].type = DB_BTREE;
451 dbd->db_table[DBIF_CNID].openflags = DB_CREATE;
452 dbd->db_table[DBIF_IDX_DEVINO].openflags = DB_CREATE;
453 dbd->db_table[DBIF_IDX_DIDNAME].openflags = DB_CREATE;
454 dbd->db_table[DBIF_IDX_NAME].openflags = DB_CREATE;
456 dbd->db_table[DBIF_IDX_NAME].flags = DB_DUPSORT;
462 We must open the db_env with an absolute pathname, as `dbd` keeps chdir'ing, which
463 breaks e.g. bdb logfile-rotation with relative pathnames.
464 But still we use relative paths with DB_ERRLOGFILE
465 in order to avoid creating absolute paths by copying. Both have no problem with
468 int dbif_env_open(DBD *dbd, struct db_param *dbp, uint32_t dbenv_oflags)
472 if ((ret = db_env_create(&dbd->db_env, 0))) {
473 LOG(log_error, logtype_cnid, "error creating DB environment: %s",
479 dbd->db_param = *dbp;
481 if ((dbif_openlog(dbd)) != 0)
484 if (dbenv_oflags & DB_RECOVER) {
486 LOG(log_debug, logtype_cnid, "Running recovery");
488 dbd->db_env->set_verbose(dbd->db_env, DB_VERB_RECOVERY, 1);
489 /* Open the database for recovery using DB_PRIVATE option which is faster */
490 if ((ret = dbd->db_env->open(dbd->db_env, dbd->db_envhome, dbenv_oflags | DB_PRIVATE, 0))) {
491 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
493 dbd->db_env->close(dbd->db_env, 0);
497 dbenv_oflags = (dbenv_oflags & ~DB_RECOVER);
499 if (dbd->db_errlog != NULL)
500 fflush(dbd->db_errlog);
502 if ((ret = dbd->db_env->close(dbd->db_env, 0))) {
503 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s",
508 dbd->db_errlog = NULL;
510 if ((ret = db_env_create(&dbd->db_env, 0))) {
511 LOG(log_error, logtype_cnid, "error creating DB environment after recovery: %s",
517 if ((dbif_openlog(dbd)) != 0)
520 LOG(log_debug, logtype_cnid, "Finished recovery.");
523 if ((ret = dbd->db_env->set_cachesize(dbd->db_env, 0, 1024 * dbp->cachesize, 0))) {
524 LOG(log_error, logtype_cnid, "error setting DB environment cachesize to %i: %s",
525 dbp->cachesize, db_strerror(ret));
526 dbd->db_env->close(dbd->db_env, 0);
531 if ((ret = dbd->db_env->set_lk_max_locks(dbd->db_env, dbp->maxlocks))) {
532 LOG(log_error, logtype_cnid, "error setting DB environment maxlocks to %i: %s",
533 10000, db_strerror(ret));
534 dbd->db_env->close(dbd->db_env, 0);
539 if ((ret = dbd->db_env->set_lk_max_objects(dbd->db_env, dbp->maxlockobjs))) {
540 LOG(log_error, logtype_cnid, "error setting DB environment max lockobjects to %i: %s",
541 10000, db_strerror(ret));
542 dbd->db_env->close(dbd->db_env, 0);
547 if ((ret = dbd->db_env->open(dbd->db_env, dbd->db_envhome, dbenv_oflags, 0))) {
548 LOG(log_error, logtype_cnid, "error opening DB environment after recovery: %s",
550 dbd->db_env->close(dbd->db_env, 0);
555 if ((ret = dbd->db_env->set_flags(dbd->db_env, DB_AUTO_COMMIT, 1))) {
556 LOG(log_error, logtype_cnid, "error setting DB_AUTO_COMMIT flag: %s",
558 dbd->db_env->close(dbd->db_env, 0);
563 if (dbp->logfile_autoremove) {
564 if ((dbif_logautorem(dbd)) != 0)
567 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 7)
568 if ((ret = dbd->db_env->log_set_config(dbd->db_env, DB_LOG_AUTO_REMOVE, 1))) {
569 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTO_REMOVE flag: %s",
571 dbd->db_env->close(dbd->db_env, 0);
576 if ((ret = dbd->db_env->set_flags(dbd->db_env, DB_LOG_AUTOREMOVE, 1))) {
577 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTOREMOVE flag: %s",
579 dbd->db_env->close(dbd->db_env, 0);
589 /* --------------- */
590 int dbif_open(DBD *dbd, struct db_param *dbp, int reindex)
597 /* Try to upgrade if it's a normal on-disk database */
598 if (dbd->db_envhome) {
600 if ((cwd = open(".", O_RDONLY)) < 0) {
601 LOG(log_error, logtype_cnid, "error opening cwd: %s", strerror(errno));
605 /* chdir to db_envhome. makes it easier checking for old db files and creating db_errlog file */
606 if ((chdir(dbd->db_envhome)) != 0) {
607 LOG(log_error, logtype_cnid, "error chdiring to db_env '%s': %s", dbd->db_envhome, strerror(errno));
611 if ((stat(dbd->db_filename, &st)) == 0) {
612 LOG(log_debug, logtype_cnid, "See if we can upgrade the CNID database...");
613 if ((ret = db_create(&upgrade_db, dbd->db_env, 0))) {
614 LOG(log_error, logtype_cnid, "error creating handle for database: %s", db_strerror(ret));
617 if ((ret = upgrade_db->upgrade(upgrade_db, dbd->db_filename, 0))) {
618 LOG(log_error, logtype_cnid, "error upgarding database: %s", db_strerror(ret));
621 if ((ret = upgrade_db->close(upgrade_db, 0))) {
622 LOG(log_error, logtype_cnid, "error closing database: %s", db_strerror(ret));
625 if ((ret = dbd->db_env->txn_checkpoint(dbd->db_env, 0, 0, DB_FORCE))) {
626 LOG(log_error, logtype_cnid, "error forcing checkpoint: %s", db_strerror(ret));
629 LOG(log_debug, logtype_cnid, "Finished BerkeleyBD upgrade check");
632 if ((fchdir(cwd)) != 0) {
633 LOG(log_error, logtype_cnid, "error chdiring back: %s", strerror(errno));
638 /* Now open databases ... */
639 for (i = 0; i != DBIF_DB_CNT; i++) {
640 if ((ret = db_create(&dbd->db_table[i].db, dbd->db_env, 0))) {
641 LOG(log_error, logtype_cnid, "error creating handle for database %s: %s",
642 dbd->db_table[i].name, db_strerror(ret));
646 if (dbd->db_table[i].flags) {
647 if ((ret = dbd->db_table[i].db->set_flags(dbd->db_table[i].db,
648 dbd->db_table[i].flags))) {
649 LOG(log_error, logtype_cnid, "error setting flags for database %s: %s",
650 dbd->db_table[i].name, db_strerror(ret));
655 if ( ! dbd->db_env) { /* In memory db */
656 if ((ret = dbd->db_table[i].db->set_cachesize(dbd->db_table[i].db,
659 4)) /* split in 4 memory chunks */
661 LOG(log_error, logtype_cnid, "error setting cachesize %u KB for database %s: %s",
662 dbp->cachesize / 1024, dbd->db_table[i].name, db_strerror(ret));
667 if (dbd->db_table[i].db->open(dbd->db_table[i].db,
670 dbd->db_table[i].name,
671 dbd->db_table[i].type,
672 dbd->db_table[i].openflags,
674 LOG(log_error, logtype_cnid, "Cant open database");
678 if (reindex && i > 0) {
679 LOG(log_info, logtype_cnid, "Truncating CNID index.");
680 if ((ret = dbd->db_table[i].db->truncate(dbd->db_table[i].db, NULL, &count, 0))) {
681 LOG(log_error, logtype_cnid, "error truncating database %s: %s",
682 dbd->db_table[i].name, db_strerror(ret));
688 /* TODO: Implement CNID DB versioning info on new databases. */
690 /* Associate the secondary with the primary. */
692 LOG(log_info, logtype_cnid, "Reindexing did/name index...");
693 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[DBIF_CNID].db,
695 dbd->db_table[DBIF_IDX_DIDNAME].db,
697 (reindex) ? DB_CREATE : 0))
699 LOG(log_error, logtype_cnid, "Failed to associate didname database: %s",db_strerror(ret));
703 LOG(log_info, logtype_cnid, "... done.");
706 LOG(log_info, logtype_cnid, "Reindexing dev/ino index...");
707 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[0].db,
709 dbd->db_table[DBIF_IDX_DEVINO].db,
711 (reindex) ? DB_CREATE : 0))
713 LOG(log_error, logtype_cnid, "Failed to associate devino database: %s",db_strerror(ret));
717 LOG(log_info, logtype_cnid, "... done.");
720 LOG(log_info, logtype_cnid, "Reindexing name index...");
723 * Upgrading from version 0 to 1 requires adding the name index below which
724 * must be done by specifying the DB_CREATE flag
726 uint32_t version = CNID_VERSION;
727 if (dbd->db_envhome && !reindex) {
728 if (dbif_getversion(dbd, &version) == -1)
732 if ((ret = dbd->db_table[0].db->associate(dbd->db_table[0].db,
734 dbd->db_table[DBIF_IDX_NAME].db,
738 ((CNID_VERSION == CNID_VERSION_1) && (version == CNID_VERSION_0)))
739 ? DB_CREATE : 0)) != 0) {
740 LOG(log_error, logtype_cnid, "Failed to associate name index: %s", db_strerror(ret));
744 LOG(log_info, logtype_cnid, "... done.");
746 if ((dbd->db_envhome) && ((ret = dbif_upgrade(dbd)) != 0)) {
747 LOG(log_error, logtype_cnid, "Error upgrading CNID database to version %d", CNID_VERSION);
754 /* ------------------------ */
755 static int dbif_closedb(DBD *dbd)
761 for (i = DBIF_DB_CNT -1; i >= 0; i--) {
762 if (dbd->db_table[i].db != NULL && (ret = dbd->db_table[i].db->close(dbd->db_table[i].db, 0))) {
763 LOG(log_error, logtype_cnid, "error closing database %s: %s", dbd->db_table[i].name, db_strerror(ret));
772 /* ------------------------ */
773 int dbif_close(DBD *dbd)
778 if (dbif_closedb(dbd))
781 if (dbd->db_env != NULL && (ret = dbd->db_env->close(dbd->db_env, 0))) {
782 LOG(log_error, logtype_cnid, "error closing DB environment: %s", db_strerror(ret));
785 if (dbd->db_errlog != NULL && fclose(dbd->db_errlog) == EOF) {
786 LOG(log_error, logtype_cnid, "error closing DB logfile: %s", strerror(errno));
790 free(dbd->db_filename);
800 In order to support silent database upgrades:
801 destroy env at cnid_dbd shutdown.
803 int dbif_env_remove(const char *path)
808 LOG(log_debug, logtype_cnid, "Reopening BerkeleyDB environment");
810 if (NULL == (dbd = dbif_init(path, "cnid2.db")))
813 /* Get db_env handle */
814 if ((ret = db_env_create(&dbd->db_env, 0))) {
815 LOG(log_error, logtype_cnid, "error creating DB environment: %s", db_strerror(ret));
820 if ((dbif_openlog(dbd)) != 0)
823 /* Open environment with recovery */
824 if ((ret = dbd->db_env->open(dbd->db_env,
826 DB_CREATE | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | DB_RECOVER | DB_PRIVATE,
828 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
830 dbd->db_env->close(dbd->db_env, 0);
835 if (dbd->db_errlog != NULL)
836 fflush(dbd->db_errlog);
838 /* Remove logfiles */
839 if ((ret = dbd->db_env->log_archive(dbd->db_env, NULL, DB_ARCH_REMOVE))) {
840 LOG(log_error, logtype_cnid, "error removing transaction logfiles: %s", db_strerror(ret));
844 if ((ret = dbd->db_env->close(dbd->db_env, 0))) {
845 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s", db_strerror(ret));
850 LOG(log_debug, logtype_cnid, "BerkeleyDB environment recovery done.");
852 /* Get a new db_env handle and then remove environment */
853 if ((ret = db_env_create(&dbd->db_env, 0))) {
854 LOG(log_error, logtype_cnid, "error acquiring db_end handle: %s", db_strerror(ret));
858 if ((ret = dbd->db_env->remove(dbd->db_env, dbd->db_envhome, 0))) {
859 LOG(log_error, logtype_cnid, "error removing BerkeleyDB environment: %s", db_strerror(ret));
863 LOG(log_debug, logtype_cnid, "Removed BerkeleyDB environment.");
869 * The following three functions are wrappers for DB->get(), DB->put() and DB->del().
870 * All three return -1 on error. dbif_get()/dbif_del return 1 if the key was found and 0
871 * otherwise. dbif_put() returns 0 if key/val was successfully updated and 1 if
872 * the DB_NOOVERWRITE flag was specified and the key already exists.
874 * All return codes other than DB_NOTFOUND and DB_KEYEXIST from the DB->()
875 * functions are not expected and therefore error conditions.
878 int dbif_get(DBD *dbd, const int dbi, DBT *key, DBT *val, u_int32_t flags)
882 ret = dbd->db_table[dbi].db->get(dbd->db_table[dbi].db,
888 if (ret == DB_NOTFOUND)
891 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s",
892 dbd->db_table[dbi].name, db_strerror(ret));
898 /* search by secondary return primary */
899 int dbif_pget(DBD *dbd, const int dbi, DBT *key, DBT *pkey, DBT *val, u_int32_t flags)
903 ret = dbd->db_table[dbi].db->pget(dbd->db_table[dbi].db,
910 if (ret == DB_NOTFOUND || ret == DB_SECONDARY_BAD) {
914 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s",
915 dbd->db_table[dbi].name, db_strerror(ret));
921 /* -------------------------- */
922 int dbif_put(DBD *dbd, const int dbi, DBT *key, DBT *val, u_int32_t flags)
926 if (dbif_txn_begin(dbd) < 0) {
927 LOG(log_error, logtype_cnid, "error setting key/value in %s", dbd->db_table[dbi].name);
931 ret = dbd->db_table[dbi].db->put(dbd->db_table[dbi].db,
939 if ((flags & DB_NOOVERWRITE) && ret == DB_KEYEXIST) {
942 LOG(log_error, logtype_cnid, "error setting key/value in %s: %s",
943 dbd->db_table[dbi].name, db_strerror(ret));
950 int dbif_del(DBD *dbd, const int dbi, DBT *key, u_int32_t flags)
954 /* For cooperation with the dbd utility and its usage of a cursor */
956 dbd->db_cur->close(dbd->db_cur);
960 if (dbif_txn_begin(dbd) < 0) {
961 LOG(log_error, logtype_cnid, "error deleting key/value from %s", dbd->db_table[dbi].name);
965 ret = dbd->db_table[dbi].db->del(dbd->db_table[dbi].db,
970 if (ret == DB_NOTFOUND) {
971 LOG(log_debug, logtype_cnid, "key not found");
975 LOG(log_error, logtype_cnid, "error deleting key/value from %s: %s",
976 dbd->db_table[dbi].name, db_strerror(ret));
983 * Search the database by name
985 * @param resbuf (w) buffer for search results CNIDs, maxsize is assumed to be
986 * DBD_MAX_SRCH_RSLTS * sizefof(cnid_t)
988 * @returns -1 on error, 0 when nothing found, else the number of matches
990 int dbif_search(DBD *dbd, DBT *key, char *resbuf)
996 char *cnids = resbuf;
998 char *namebkp = key->data;
999 int namelenbkp = key->size;
1001 memset(&pkey, 0, sizeof(DBT));
1002 memset(&data, 0, sizeof(DBT));
1005 ret = dbd->db_table[DBIF_IDX_NAME].db->cursor(dbd->db_table[DBIF_IDX_NAME].db,
1010 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(ret));
1015 ret = cursorp->pget(cursorp, key, &pkey, &data, DB_SET_RANGE);
1016 while (count < DBD_MAX_SRCH_RSLTS && ret != DB_NOTFOUND) {
1017 if (!((namelenbkp <= key->size) && (strncmp(namebkp, key->data, namelenbkp) == 0)))
1020 memcpy(cnids, pkey.data, sizeof(cnid_t));
1021 memcpy(&cnid, pkey.data, sizeof(cnid_t));
1022 cnids += sizeof(cnid_t);
1023 LOG(log_debug, logtype_cnid, "match: CNID %" PRIu32, ntohl(cnid));
1025 ret = cursorp->pget(cursorp, key, &pkey, &data, DB_NEXT);
1031 if (cursorp != NULL)
1032 cursorp->close(cursorp);
1036 int dbif_txn_begin(DBD *dbd)
1040 /* If we already have an active txn, just return */
1044 /* If our DBD has no env, just return (-> in memory db) */
1045 if (dbd->db_env == NULL)
1048 ret = dbd->db_env->txn_begin(dbd->db_env, NULL, &dbd->db_txn, 0);
1051 LOG(log_error, logtype_cnid, "error starting transaction: %s", db_strerror(ret));
1057 int dbif_txn_commit(DBD *dbd)
1064 /* If our DBD has no env, just return (-> in memory db) */
1065 if (dbd->db_env == NULL)
1068 ret = dbd->db_txn->commit(dbd->db_txn, 0);
1072 LOG(log_error, logtype_cnid, "error committing transaction: %s", db_strerror(ret));
1078 int dbif_txn_abort(DBD *dbd)
1085 /* If our DBD has no env, just return (-> in memory db) */
1086 if (dbd->db_env == NULL)
1089 ret = dbd->db_txn->abort(dbd->db_txn);
1093 LOG(log_error, logtype_cnid, "error aborting transaction: %s", db_strerror(ret));
1100 ret = 1 -> commit txn if db_param.txn_frequency
1101 ret = 0 -> abort txn db_param.txn_frequency -> exit!
1102 anything else -> exit!
1104 @returns 0 on success (abort or commit), -1 on error
1106 int dbif_txn_close(DBD *dbd, int ret)
1109 if (dbif_txn_abort(dbd) < 0) {
1110 LOG( log_error, logtype_cnid, "Fatal error aborting transaction. Exiting!");
1113 } else if (ret == 1) {
1114 ret = dbif_txn_commit(dbd);
1116 LOG( log_error, logtype_cnid, "Fatal error committing transaction. Exiting!");
1126 int dbif_txn_checkpoint(DBD *dbd, u_int32_t kbyte, u_int32_t min, u_int32_t flags)
1129 ret = dbd->db_env->txn_checkpoint(dbd->db_env, kbyte, min, flags);
1131 LOG(log_error, logtype_cnid, "error checkpointing transaction susystem: %s", db_strerror(ret));
1137 int dbif_count(DBD *dbd, const int dbi, u_int32_t *count)
1141 DB *db = dbd->db_table[dbi].db;
1143 ret = db->stat(db, NULL, &sp, 0);
1146 LOG(log_error, logtype_cnid, "error getting stat infotmation on database: %s", db_strerror(ret));
1150 *count = sp->bt_ndata;
1156 int dbif_copy_rootinfokey(DBD *srcdbd, DBD *destdbd)
1161 memset(&key, 0, sizeof(key));
1162 memset(&data, 0, sizeof(data));
1164 key.data = ROOTINFO_KEY;
1165 key.size = ROOTINFO_KEYLEN;
1167 if ((rc = dbif_get(srcdbd, DBIF_CNID, &key, &data, 0)) <= 0) {
1168 LOG(log_error, logtype_cnid, "dbif_copy_rootinfokey: Error getting rootinfo record");
1172 memset(&key, 0, sizeof(key));
1173 key.data = ROOTINFO_KEY;
1174 key.size = ROOTINFO_KEYLEN;
1176 if ((rc = dbif_put(destdbd, DBIF_CNID, &key, &data, 0))) {
1177 LOG(log_error, logtype_cnid, "dbif_copy_rootinfokey: Error writing rootinfo key");
1184 int dbif_dump(DBD *dbd, int dumpindexes)
1187 uint32_t max = 0, count = 0, cnid, type, did, lastid, version;
1191 DBT key = { 0 }, data = { 0 };
1192 DB *db = dbd->db_table[DBIF_CNID].db;
1193 char *typestring[2] = {"f", "d"};
1196 printf("CNID database dump:\n");
1198 rc = db->cursor(db, NULL, &cur, 0);
1200 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1204 cur->c_get(cur, &key, &data, DB_FIRST);
1206 /* Parse and print data */
1207 memcpy(&cnid, key.data, 4);
1212 /* Rootinfo node ? */
1214 memcpy(&stamp, (char *)data.data + CNID_DEV_OFS, sizeof(time_t));
1215 memcpy(&lastid, (char *)data.data + CNID_TYPE_OFS, CNID_TYPE_LEN);
1216 lastid = ntohl(lastid);
1217 memcpy(&version, (char *)data.data + CNID_DID_OFS, CNID_DID_LEN);
1218 version = ntohl(version);
1220 strftime(timebuf, sizeof(timebuf), "%b %d %Y %H:%M:%S", localtime(&stamp));
1221 printf("CNID db version: %u, dbd stamp: 0x%08x (%s), next free CNID: %u\n",
1222 version, (unsigned int)stamp, timebuf, lastid + 1);
1225 memcpy(&dev, (char *)data.data + CNID_DEV_OFS, 8);
1228 memcpy(&ino, (char *)data.data + CNID_INO_OFS, 8);
1231 memcpy(&type, (char *)data.data + CNID_TYPE_OFS, 4);
1234 memcpy(&did, (char *)data.data + CNID_DID_OFS, 4);
1238 printf("id: %10u, did: %10u, type: %s, dev: 0x%llx, ino: 0x%016llx, name: %s\n",
1239 cnid, did, typestring[type],
1240 (long long unsigned int)dev, (long long unsigned int)ino,
1241 (char *)data.data + CNID_NAME_OFS);
1245 rc = cur->c_get(cur, &key, &data, DB_NEXT);
1248 if (rc != DB_NOTFOUND) {
1249 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1253 rc = cur->c_close(cur);
1255 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(rc));
1258 printf("%u CNIDs in database. Max CNID: %u.\n", count, max);
1260 /* Dump indexes too ? */
1262 /* DBIF_IDX_DEVINO */
1263 printf("\ndev/inode index:\n");
1265 db = dbd->db_table[DBIF_IDX_DEVINO].db;
1266 rc = db->cursor(db, NULL, &cur, 0);
1268 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1272 cur->c_get(cur, &key, &data, DB_FIRST);
1274 /* Parse and print data */
1277 memcpy(&cnid, data.data, CNID_LEN);
1283 memcpy(&dev, key.data, CNID_DEV_LEN);
1286 memcpy(&ino, (char *)key.data + CNID_DEV_LEN, CNID_INO_LEN);
1289 printf("id: %10u <== dev: 0x%llx, ino: 0x%016llx\n",
1290 cnid, (unsigned long long int)dev, (unsigned long long int)ino);
1293 rc = cur->c_get(cur, &key, &data, DB_NEXT);
1295 if (rc != DB_NOTFOUND) {
1296 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1300 rc = cur->c_close(cur);
1302 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(rc));
1305 printf("%u items\n", count);
1307 /* Now dump DBIF_IDX_DIDNAME */
1308 printf("\ndid/name index:\n");
1310 db = dbd->db_table[DBIF_IDX_DIDNAME].db;
1311 rc = db->cursor(db, NULL, &cur, 0);
1313 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1317 cur->c_get(cur, &key, &data, DB_FIRST);
1319 /* Parse and print data */
1322 memcpy(&cnid, data.data, CNID_LEN);
1328 memcpy(&did, key.data, CNID_LEN);
1331 printf("id: %10u <== did: %10u, name: %s\n", cnid, did, (char *)key.data + CNID_LEN);
1334 rc = cur->c_get(cur, &key, &data, DB_NEXT);
1336 if (rc != DB_NOTFOUND) {
1337 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1341 rc = cur->c_close(cur);
1343 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(rc));
1346 printf("%u items\n", count);
1353 Iterates over dbd, returning cnids.
1354 Uses in-value of cnid to seek to that cnid, then gets next and return that in cnid.
1355 If close=1, close cursor.
1356 Return -1 on error, 0 on EOD (end-of-database), 1 if returning cnid.
1358 int dbif_idwalk(DBD *dbd, cnid_t *cnid, int close)
1364 static DBT key = { 0 }, data = { 0 };
1365 DB *db = dbd->db_table[DBIF_CNID].db;
1369 dbd->db_cur->close(dbd->db_cur);
1375 /* An dbif_del will have closed our cursor too */
1376 if ( ! dbd->db_cur ) {
1377 if ((rc = db->cursor(db, NULL, &dbd->db_cur, 0)) != 0) {
1378 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(rc));
1381 flag = DB_SET_RANGE; /* This will seek to next cnid after the one just deleted */
1384 key.size = sizeof(cnid_t);
1388 if ((rc = dbd->db_cur->get(dbd->db_cur, &key, &data, flag)) == 0) {
1389 memcpy(cnid, key.data, sizeof(cnid_t));
1390 *cnid = ntohl(*cnid);
1394 if (rc != DB_NOTFOUND) {
1395 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(rc));
1396 dbd->db_cur->close(dbd->db_cur);
1402 dbd->db_cur->close(dbd->db_cur);