trivial database library - private includes
Copyright (C) Andrew Tridgell 2005
-
+
** NOTE! The following LGPL license applies to the tdb
** library. This does NOT imply that all of Samba is released
** under the LGPL
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+
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
#define TDB_DEAD_MAGIC (0xFEE1DEAD)
#define TDB_RECOVERY_MAGIC (0xf53bc0e7U)
#define TDB_RECOVERY_INVALID_MAGIC (0x0)
+#define TDB_HASH_RWLOCK_MAGIC (0xbad1a51U)
#define TDB_ALIGNMENT 4
#define DEFAULT_HASH_SIZE 131
#define FREELIST_TOP (sizeof(struct tdb_header))
tdb_off_t rwlocks; /* obsolete - kept to detect old formats */
tdb_off_t recovery_start; /* offset of transaction recovery region */
tdb_off_t sequence_number; /* used when TDB_SEQNUM is set */
- tdb_off_t reserved[29];
+ uint32_t magic1_hash; /* hash of TDB_MAGIC_FOOD. */
+ uint32_t magic2_hash; /* hash of TDB_MAGIC. */
+ tdb_off_t reserved[27];
};
struct tdb_lock_type {
int (*tdb_read)(struct tdb_context *, tdb_off_t , void *, tdb_len_t , int );
int (*tdb_write)(struct tdb_context *, tdb_off_t, const void *, tdb_len_t);
void (*next_hash_chain)(struct tdb_context *, uint32_t *);
- int (*tdb_oob)(struct tdb_context *, tdb_off_t , int );
+ int (*tdb_oob)(struct tdb_context *, tdb_off_t , tdb_len_t, int );
int (*tdb_expand_file)(struct tdb_context *, tdb_off_t , tdb_off_t );
};
int rw_type, tdb_off_t offset, size_t len);
bool tdb_have_extra_locks(struct tdb_context *tdb);
void tdb_release_transaction_locks(struct tdb_context *tdb);
-int tdb_transaction_lock(struct tdb_context *tdb, int ltype);
+int tdb_transaction_lock(struct tdb_context *tdb, int ltype,
+ enum tdb_lock_flags lockflags);
int tdb_transaction_unlock(struct tdb_context *tdb, int ltype);
+int tdb_recovery_area(struct tdb_context *tdb,
+ const struct tdb_methods *methods,
+ tdb_off_t *recovery_offset,
+ struct tdb_record *rec);
int tdb_allrecord_lock(struct tdb_context *tdb, int ltype,
enum tdb_lock_flags flags, bool upgradable);
int tdb_allrecord_unlock(struct tdb_context *tdb, int ltype, bool mark_lock);
int tdb_ofs_write(struct tdb_context *tdb, tdb_off_t offset, tdb_off_t *d);
int tdb_lock_record(struct tdb_context *tdb, tdb_off_t off);
int tdb_unlock_record(struct tdb_context *tdb, tdb_off_t off);
+bool tdb_needs_recovery(struct tdb_context *tdb);
int tdb_rec_read(struct tdb_context *tdb, tdb_off_t offset, struct tdb_record *rec);
int tdb_rec_write(struct tdb_context *tdb, tdb_off_t offset, struct tdb_record *rec);
int tdb_do_delete(struct tdb_context *tdb, tdb_off_t rec_ptr, struct tdb_record *rec);
int tdb_expand(struct tdb_context *tdb, tdb_off_t size);
int tdb_rec_free_read(struct tdb_context *tdb, tdb_off_t off,
struct tdb_record *rec);
-
-
+bool tdb_write_all(int fd, const void *buf, size_t count);
+int tdb_transaction_recover(struct tdb_context *tdb);
+void tdb_header_hash(struct tdb_context *tdb,
+ uint32_t *magic1_hash, uint32_t *magic2_hash);
+unsigned int tdb_old_hash(TDB_DATA *key);
+size_t tdb_dead_space(struct tdb_context *tdb, tdb_off_t off);