2 * $Id: dbif.c,v 1.7 2009-04-28 13:01:24 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 DB_ENV *db_env = NULL;
33 static DB_TXN *db_txn = NULL;
34 static FILE *db_errlog = NULL;
36 static struct db_table {
39 u_int32_t general_flags;
43 { "cnid2.db", NULL, 0, DB_BTREE},
44 { "devino.db", NULL, 0, DB_BTREE},
45 { "didname.db", NULL, 0, DB_BTREE},
48 static char *old_dbfiles[] = {"cnid.db", NULL};
51 static int db_compat_associate (DB *p, DB *s,
52 int (*callback)(DB *, const DBT *,const DBT *, DBT *),
55 return p->associate(p, NULL, s, callback, flags);
59 static int db_compat_open(DB *db, char *file, char *name, DBTYPE type, int mode)
63 ret = db->open(db, NULL, file, name, type, DB_CREATE, mode);
66 LOG(log_error, logtype_cnid, "error opening database %s: %s", name, db_strerror(ret));
74 static int upgrade_required()
80 for (i = 0; old_dbfiles[i] != NULL; i++) {
81 if ( !(stat(old_dbfiles[i], &st) < 0) ) {
85 if (errno != ENOENT) {
86 LOG(log_error, logtype_cnid, "cnid_open: Checking %s gave %s", old_dbfiles[i], strerror(errno));
94 int dbif_stamp(void *buffer, int size)
102 if ((rc = stat(db_table[0].name, &st)) < 0) {
103 LOG(log_error, logtype_cnid, "error stating database %s: %s", db_table[0].name, db_strerror(rc));
106 memset(buffer, 0, size);
107 memcpy(buffer, &st.st_ctime, sizeof(st.st_ctime));
112 /* --------------- */
114 * We assume our current directory is already the BDB homedir. Otherwise
115 * opening the databases will not work as expected.
117 int dbif_env_init(struct db_param *dbp, uint32_t dbenv_oflags)
120 char **logfiles = NULL;
123 /* Refuse to do anything if this is an old version of the CNID database */
124 if (upgrade_required()) {
125 LOG(log_error, logtype_cnid, "Found version 1 of the CNID database. Please upgrade to version 2");
129 if ((db_errlog = fopen(DB_ERRLOGFILE, "a")) == NULL)
130 LOG(log_warning, logtype_cnid, "error creating/opening DB errlogfile: %s", strerror(errno));
132 if ((ret = db_env_create(&db_env, 0))) {
133 LOG(log_error, logtype_cnid, "error creating DB environment: %s",
139 if (db_errlog != NULL) {
140 db_env->set_errfile(db_env, db_errlog);
141 db_env->set_msgfile(db_env, db_errlog);
144 db_env->set_verbose(db_env, DB_VERB_RECOVERY, 1);
146 /* Open the database for recovery using DB_PRIVATE option which is faster */
147 if ((ret = db_env->open(db_env, ".", dbenv_oflags | DB_PRIVATE | DB_RECOVER, 0))) {
148 LOG(log_error, logtype_cnid, "error opening DB environment: %s",
150 db_env->close(db_env, 0);
155 if (db_errlog != NULL)
158 if ((ret = db_env->close(db_env, 0))) {
159 LOG(log_error, logtype_cnid, "error closing DB environment after recovery: %s",
165 if ((ret = db_env_create(&db_env, 0))) {
166 LOG(log_error, logtype_cnid, "error creating DB environment after recovery: %s",
172 if ((ret = db_env->set_cachesize(db_env, 0, 1024 * dbp->cachesize, 0))) {
173 LOG(log_error, logtype_cnid, "error setting DB environment cachesize to %i: %s",
174 dbp->cachesize, db_strerror(ret));
175 db_env->close(db_env, 0);
180 if (db_errlog != NULL) {
181 db_env->set_errfile(db_env, db_errlog);
182 db_env->set_msgfile(db_env, db_errlog);
184 if ((ret = db_env->open(db_env, ".", dbenv_oflags, 0))) {
185 LOG(log_error, logtype_cnid, "error opening DB environment after recovery: %s",
187 db_env->close(db_env, 0);
192 if ((ret = db_env->set_flags(db_env, DB_AUTO_COMMIT, 1))) {
193 LOG(log_error, logtype_cnid, "error setting DB_AUTO_COMMIT flag: %s",
195 db_env->close(db_env, 0);
200 if (dbp->logfile_autoremove) {
201 if (db_env->log_archive(db_env, &logfiles, 0)) {
202 LOG(log_error, logtype_cnid, "error getting list of stale logfiles: %s",
204 db_env->close(db_env, 0);
208 if (logfiles != NULL) {
209 for (file = logfiles; *file != NULL; file++) {
210 if (unlink(*file) < 0)
211 LOG(log_warning, logtype_cnid, "Error removing stale logfile %s: %s", *file, strerror(errno));
216 #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 7)
217 if ((ret = db_env->log_set_config(db_env, DB_LOG_AUTO_REMOVE, 1))) {
218 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTO_REMOVE flag: %s",
220 db_env->close(db_env, 0);
225 if ((ret = db_env->set_flags(db_env, DB_LOG_AUTOREMOVE, 1))) {
226 LOG(log_error, logtype_cnid, "error setting DB_LOG_AUTOREMOVE flag: %s",
228 db_env->close(db_env, 0);
238 /* --------------- */
239 int dbif_open(struct db_param *dbp _U_, int do_truncate)
245 for (i = 0; i != DBIF_DB_CNT; i++) {
246 if ((ret = db_create(&(db_table[i].db), db_env, 0))) {
247 LOG(log_error, logtype_cnid, "error creating handle for database %s: %s",
248 db_table[i].name, db_strerror(ret));
252 if (db_table[i].general_flags) {
253 if ((ret = db_table[i].db->set_flags(db_table[i].db, db_table[i].general_flags))) {
254 LOG(log_error, logtype_cnid, "error setting flags for database %s: %s",
255 db_table[i].name, db_strerror(ret));
260 if (db_compat_open(db_table[i].db, db_table[0].name, db_table[i].name, db_table[i].type, 0664) < 0)
262 if (db_errlog != NULL)
263 db_table[i].db->set_errfile(db_table[i].db, db_errlog);
265 if (do_truncate && i > 0) {
266 LOG(log_info, logtype_cnid, "Truncating CNID index.");
267 if ((ret = db_table[i].db->truncate(db_table[i].db, NULL, &count, 0))) {
268 LOG(log_error, logtype_cnid, "error truncating database %s: %s",
269 db_table[i].name, db_strerror(ret));
275 /* TODO: Implement CNID DB versioning info on new databases. */
277 /* Associate the secondary with the primary. */
278 LOG(log_debug, logtype_cnid, "Associating DBIF_IDX_DIDNAME index. Possibly reindexing...");
279 if ((ret = db_compat_associate(db_table[0].db, db_table[DBIF_IDX_DIDNAME].db, didname, (do_truncate)?DB_CREATE:0)) != 0) {
280 LOG(log_error, logtype_cnid, "Failed to associate didname database: %s",db_strerror(ret));
283 LOG(log_debug, logtype_cnid, "... done.");
285 LOG(log_debug, logtype_cnid, "Associating DBIF_IDX_DEVINO index. Possibly reindexing...");
286 if ((ret = db_compat_associate(db_table[0].db, db_table[DBIF_IDX_DEVINO].db, devino, (do_truncate)?DB_CREATE:0)) != 0) {
287 LOG(log_error, logtype_cnid, "Failed to associate devino database: %s",db_strerror(ret));
290 LOG(log_debug, logtype_cnid, "... done.");
295 /* ------------------------ */
302 for (i = DBIF_DB_CNT -1; i >= 0; i--) {
303 if (db_table[i].db != NULL && (ret = db_table[i].db->close(db_table[i].db, 0))) {
304 LOG(log_error, logtype_cnid, "error closing database %s: %s", db_table[i].name, db_strerror(ret));
313 /* ------------------------ */
322 if (db_env != NULL && (ret = db_env->close(db_env, 0))) {
323 LOG(log_error, logtype_cnid, "error closing DB environment: %s", db_strerror(ret));
326 if (db_errlog != NULL && fclose(db_errlog) == EOF) {
327 LOG(log_error, logtype_cnid, "error closing DB logfile: %s", strerror(errno));
336 * The following three functions are wrappers for DB->get(), DB->put() and DB->del().
337 * All three return -1 on error. dbif_get()/dbif_del return 1 if the key was found and 0
338 * otherwise. dbif_put() returns 0 if key/val was successfully updated and 1 if
339 * the DB_NOOVERWRITE flag was specified and the key already exists.
341 * All return codes other than DB_NOTFOUND and DB_KEYEXIST from the DB->()
342 * functions are not expected and therefore error conditions.
345 int dbif_get(const int dbi, DBT *key, DBT *val, u_int32_t flags)
348 DB *db = db_table[dbi].db;
350 ret = db->get(db, db_txn, key, val, flags);
352 if (ret == DB_NOTFOUND)
355 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s", db_table[dbi].name, db_strerror(errno));
361 /* search by secondary return primary */
362 int dbif_pget(const int dbi, DBT *key, DBT *pkey, DBT *val, u_int32_t flags)
365 DB *db = db_table[dbi].db;
367 ret = db->pget(db, db_txn, key, pkey, val, flags);
369 if (ret == DB_NOTFOUND || ret == DB_SECONDARY_BAD) {
373 LOG(log_error, logtype_cnid, "error retrieving value from %s: %s", db_table[dbi].name, db_strerror(errno));
379 /* -------------------------- */
380 int dbif_put(const int dbi, DBT *key, DBT *val, u_int32_t flags)
383 DB *db = db_table[dbi].db;
385 if (dbif_txn_begin() < 0) {
386 LOG(log_error, logtype_cnid, "error setting key/value in %s: %s", db_table[dbi].name, db_strerror(errno));
390 ret = db->put(db, db_txn, key, val, flags);
393 if ((flags & DB_NOOVERWRITE) && ret == DB_KEYEXIST) {
396 LOG(log_error, logtype_cnid, "error setting key/value in %s: %s", db_table[dbi].name, db_strerror(errno));
403 int dbif_del(const int dbi, DBT *key, u_int32_t flags)
406 DB *db = db_table[dbi].db;
408 if (dbif_txn_begin() < 0) {
409 LOG(log_error, logtype_cnid, "error deleting key/value from %s: %s", db_table[dbi].name, db_strerror(errno));
413 ret = db->del(db, db_txn, key, flags);
415 if (ret == DB_NOTFOUND || ret == DB_SECONDARY_BAD)
418 LOG(log_error, logtype_cnid, "error deleting key/value from %s: %s", db_table[dbi].name, db_strerror(errno));
428 /* If we already have a acitve txn, just return */
432 ret = db_env->txn_begin(db_env, NULL, &db_txn, 0);
435 LOG(log_error, logtype_cnid, "error starting transaction: %s", db_strerror(errno));
441 int dbif_txn_commit()
448 ret = db_txn->commit(db_txn, 0);
452 LOG(log_error, logtype_cnid, "error committing transaction: %s", db_strerror(errno));
465 ret = db_txn->abort(db_txn);
469 LOG(log_error, logtype_cnid, "error aborting transaction: %s", db_strerror(errno));
475 int dbif_txn_checkpoint(u_int32_t kbyte, u_int32_t min, u_int32_t flags)
478 ret = db_env->txn_checkpoint(db_env, kbyte, min, flags);
480 LOG(log_error, logtype_cnid, "error checkpointing transaction susystem: %s", db_strerror(errno));
486 int dbif_count(const int dbi, u_int32_t *count)
490 DB *db = db_table[dbi].db;
492 ret = db->stat(db, NULL, &sp, 0);
495 LOG(log_error, logtype_cnid, "error getting stat infotmation on database: %s", db_strerror(errno));
499 *count = sp->bt_ndata;
505 int dbif_dump(int dumpindexes)
508 uint32_t max = 0, count = 0, cnid, type, did;
511 DBT key = { 0 }, data = { 0 };
512 DB *db = db_table[DBIF_IDX_CNID].db;
513 char *typestring[2] = {"f", "d"};
515 printf("CNID database:\n");
517 rc = db->cursor(db, NULL, &cur, 0);
519 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
523 cur->c_get(cur, &key, &data, DB_FIRST);
525 /* Parse and print data */
526 memcpy(&cnid, key.data, 4);
531 /* Rootinfo node ? */
535 memcpy(&dev, data.data + CNID_DEV_OFS, 8);
538 memcpy(&ino, data.data + CNID_INO_OFS, 8);
541 memcpy(&type, data.data + CNID_TYPE_OFS, 4);
544 memcpy(&did, data.data + CNID_DID_OFS, 4);
548 printf("id: %10u, did: %10u, type: %s, dev: 0x%llx, ino: 0x%016llx, name: %s\n",
549 cnid, did, typestring[type],
550 (long long unsigned int)dev, (long long unsigned int)ino,
551 (char *)data.data + CNID_NAME_OFS);
555 rc = cur->c_get(cur, &key, &data, DB_NEXT);
558 if (rc != DB_NOTFOUND) {
559 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
563 rc = cur->c_close(cur);
565 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(errno));
568 printf("%u CNIDs in database. Max CNID: %u.\n", count, max);
570 /* Dump indexes too ? */
572 /* DBIF_IDX_DEVINO */
573 printf("\ndev/inode index:\n");
575 db = db_table[DBIF_IDX_DEVINO].db;
576 rc = db->cursor(db, NULL, &cur, 0);
578 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
582 cur->c_get(cur, &key, &data, DB_FIRST);
584 /* Parse and print data */
587 memcpy(&cnid, data.data, CNID_LEN);
593 memcpy(&dev, key.data, CNID_DEV_LEN);
596 memcpy(&ino, key.data + CNID_DEV_LEN, CNID_INO_LEN);
599 printf("id: %10u <== dev: 0x%llx, ino: 0x%016llx\n",
600 cnid, (unsigned long long int)dev, (unsigned long long int)ino);
603 rc = cur->c_get(cur, &key, &data, DB_NEXT);
605 if (rc != DB_NOTFOUND) {
606 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
610 rc = cur->c_close(cur);
612 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(errno));
615 printf("%u items\n", count);
617 /* Now dump DBIF_IDX_DIDNAME */
618 printf("\ndid/name index:\n");
620 db = db_table[DBIF_IDX_DIDNAME].db;
621 rc = db->cursor(db, NULL, &cur, 0);
623 LOG(log_error, logtype_cnid, "Couldn't create cursor: %s", db_strerror(errno));
627 cur->c_get(cur, &key, &data, DB_FIRST);
629 /* Parse and print data */
632 memcpy(&cnid, data.data, CNID_LEN);
638 memcpy(&did, key.data, CNID_LEN);
641 printf("id: %10u <== did: %10u, name: %s\n", cnid, did, (char *)key.data + CNID_LEN);
644 rc = cur->c_get(cur, &key, &data, DB_NEXT);
646 if (rc != DB_NOTFOUND) {
647 LOG(log_error, logtype_cnid, "Error iterating over btree: %s", db_strerror(errno));
651 rc = cur->c_close(cur);
653 LOG(log_error, logtype_cnid, "Couldn't close cursor: %s", db_strerror(errno));
656 printf("%u items\n", count);