X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fdatabase.h;h=b9b76b715918992912c6ffab9937f52e1372ea53;hb=dbee11a35d5d217f356279fa400d7f9deab86cb0;hp=52d00de40e6ea513ddfd6cbaa48f1565ee41efb2;hpb=ae822088bca5cce3d6c3ef7f6d312a6d5de7a77c;p=citadel.git diff --git a/citadel/database.h b/citadel/database.h index 52d00de40..b9b76b715 100644 --- a/citadel/database.h +++ b/citadel/database.h @@ -1,3 +1,60 @@ -struct cdbdata *cdb_fetch(int cdb, void *key, int keylen); -int cdb_store(int cdb, void *key, int keylen, void *data, int datalen); -int cdb_delete(int cdb, void *key, int keylen); +/* + * Copyright (c) 1987-2017 by the citadel.org team + * + * This program is open source software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef DATABASE_H +#define DATABASE_H + + +void open_databases (void); +void close_databases (void); +int cdb_store (int cdb, const void *key, int keylen, void *data, int datalen); +int cdb_delete (int cdb, void *key, int keylen); +struct cdbdata *cdb_fetch (int cdb, const void *key, int keylen); +void cdb_free (struct cdbdata *cdb); +void cdb_rewind (int cdb); +struct cdbdata *cdb_next_item (int cdb); +void cdb_close_cursor(int cdb); +void cdb_begin_transaction(void); +void cdb_end_transaction(void); +void cdb_allocate_tsd(void); +void cdb_free_tsd(void); +void cdb_check_handles(void); +void cdb_trunc(int cdb); +void *checkpoint_thread(void *arg); +void cdb_chmod_data(void); +void cdb_checkpoint(void); +void check_handles(void *arg); +void cdb_cull_logs(void); +void cdb_compact(void); + + +/* + * Database records beginning with this magic number are assumed to + * be compressed. In the event that a database record actually begins with + * this magic number, we *must* compress it whether we want to or not, + * because the fetch function will try to uncompress it anyway. + * + * (No need to #ifdef this stuff; it compiles ok even if zlib is not present + * and doesn't declare anything so it won't bloat the code) + */ +#define COMPRESS_MAGIC 0xc0ffeeee + +struct CtdlCompressHeader { + int magic; + size_t uncompressed_len; + size_t compressed_len; +}; + +int CheckIfAlreadySeen(StrBuf *guid); + +#endif /* DATABASE_H */ +