diff options
Diffstat (limited to 'source4/lib/tdb/common/tdb_private.h')
| -rw-r--r-- | source4/lib/tdb/common/tdb_private.h | 47 |
1 files changed, 35 insertions, 12 deletions
diff --git a/source4/lib/tdb/common/tdb_private.h b/source4/lib/tdb/common/tdb_private.h index 8e246e3283..eefcc52557 100644 --- a/source4/lib/tdb/common/tdb_private.h +++ b/source4/lib/tdb/common/tdb_private.h @@ -29,6 +29,8 @@ #include <config.h> #endif +#define _XOPEN_SOURCE 500 + #include <stdlib.h> #include <stdio.h> #include <stdint.h> @@ -39,7 +41,7 @@ #include <errno.h> #include <sys/mman.h> #include <sys/stat.h> -#include "tdbconfig.h" +#include "config.h" #include "tdb.h" #else #include "includes.h" @@ -56,23 +58,30 @@ typedef u32 tdb_len_t; typedef u32 tdb_off_t; +#ifndef offsetof +#define offsetof(t,f) ((unsigned int)&((t *)0)->f) +#endif + #define TDB_MAGIC_FOOD "TDB file\n" #define TDB_VERSION (0x26011967 + 6) #define TDB_MAGIC (0x26011999U) #define TDB_FREE_MAGIC (~TDB_MAGIC) #define TDB_DEAD_MAGIC (0xFEE1DEAD) +#define TDB_RECOVERY_MAGIC (0xf53bc0e7U) #define TDB_ALIGNMENT 4 #define MIN_REC_SIZE (2*sizeof(struct list_struct) + TDB_ALIGNMENT) #define DEFAULT_HASH_SIZE 131 -#define TDB_PAGE_SIZE 0x2000 #define FREELIST_TOP (sizeof(struct tdb_header)) #define TDB_ALIGN(x,a) (((x) + (a)-1) & ~((a)-1)) #define TDB_BYTEREV(x) (((((x)&0xff)<<24)|((x)&0xFF00)<<8)|(((x)>>8)&0xFF00)|((x)>>24)) #define TDB_DEAD(r) ((r)->magic == TDB_DEAD_MAGIC) #define TDB_BAD_MAGIC(r) ((r)->magic != TDB_MAGIC && !TDB_DEAD(r)) #define TDB_HASH_TOP(hash) (FREELIST_TOP + (BUCKET(hash)+1)*sizeof(tdb_off_t)) +#define TDB_HASHTABLE_SIZE(tdb) ((tdb->header.hash_size+1)*sizeof(tdb_off_t)) #define TDB_DATA_START(hash_size) TDB_HASH_TOP(hash_size-1) - +#define TDB_RECOVERY_HEAD offsetof(struct tdb_header, recovery_start) +#define TDB_PAD_BYTE 0x42 +#define TDB_PAD_U32 0x42424242 /* NB assumes there is a local variable called "tdb" that is the * current context, also takes doubly-parenthesized print-style @@ -80,8 +89,9 @@ typedef u32 tdb_off_t; #define TDB_LOG(x) tdb->log_fn x /* lock offsets */ -#define GLOBAL_LOCK 0 -#define ACTIVE_LOCK 4 +#define GLOBAL_LOCK 0 +#define ACTIVE_LOCK 4 +#define TRANSACTION_LOCK 8 #ifndef MAP_FILE #define MAP_FILE 0 @@ -138,8 +148,9 @@ struct tdb_header { char magic_food[32]; /* for /etc/magic */ u32 version; /* version of the code */ u32 hash_size; /* number of hash entries */ - tdb_off_t rwlocks; - tdb_off_t reserved[31]; + tdb_off_t rwlocks; /* obsolete - kept to detect old formats */ + tdb_off_t recovery_start; /* offset of transaction recovery region */ + tdb_off_t reserved[30]; }; struct tdb_lock_type { @@ -154,6 +165,15 @@ struct tdb_traverse_lock { }; +struct tdb_methods { + 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 *, u32 *); + int (*tdb_oob)(struct tdb_context *, tdb_off_t , int ); + int (*tdb_expand_file)(struct tdb_context *, tdb_off_t , tdb_off_t ); + int (*tdb_brlock)(struct tdb_context *, tdb_off_t , int, int, int); +}; + struct tdb_context { char *name; /* the name of the database */ void *map_ptr; /* where it is currently mapped */ @@ -171,7 +191,10 @@ struct tdb_context { void (*log_fn)(struct tdb_context *tdb, int level, const char *, ...) PRINTF_ATTRIBUTE(3,4); /* logging function */ unsigned int (*hash_fn)(TDB_DATA *key); int open_flags; /* flags used in the open - needed by reopen */ + unsigned int num_locks; /* number of chain locks held */ + const struct tdb_methods *methods; struct tdb_transaction *transaction; + int page_size; }; @@ -180,13 +203,11 @@ struct tdb_context { */ int tdb_munmap(struct tdb_context *tdb); void tdb_mmap(struct tdb_context *tdb); -int tdb_read(struct tdb_context *tdb, tdb_off_t off, void *buf, tdb_len_t len, int cv); -int tdb_write(struct tdb_context *tdb, tdb_off_t off, void *buf, tdb_len_t len); -int tdb_oob(struct tdb_context *tdb, tdb_off_t len, int probe); int tdb_lock(struct tdb_context *tdb, int list, int ltype); int tdb_unlock(struct tdb_context *tdb, int list, int ltype); -int tdb_expand(struct tdb_context *tdb, tdb_off_t size); int tdb_brlock(struct tdb_context *tdb, tdb_off_t offset, int rw_type, int lck_type, int probe); +int tdb_brlock_len(struct tdb_context *tdb, tdb_off_t offset, + int rw_type, int lck_type, int probe, size_t len); int tdb_write_lock_record(struct tdb_context *tdb, tdb_off_t off); int tdb_write_unlock_record(struct tdb_context *tdb, tdb_off_t off); int tdb_ofs_read(struct tdb_context *tdb, tdb_off_t offset, tdb_off_t *d); @@ -204,5 +225,7 @@ int tdb_do_delete(struct tdb_context *tdb, tdb_off_t rec_ptr, struct list_struct unsigned char *tdb_alloc_read(struct tdb_context *tdb, tdb_off_t offset, tdb_len_t len); tdb_off_t tdb_find_lock_hash(struct tdb_context *tdb, TDB_DATA key, u32 hash, int locktype, struct list_struct *rec); -void tdb_next_hash_chain(struct tdb_context *tdb, u32 *chain); +void tdb_io_init(struct tdb_context *tdb); +int tdb_expand(struct tdb_context *tdb, tdb_off_t size); + |