365 lines
8.0 KiB
C
365 lines
8.0 KiB
C
/*
|
|
* Copyright (c) 1999-2001 Sendmail, Inc. and its suppliers.
|
|
* All rights reserved.
|
|
*
|
|
* By using this file, you agree to the terms and conditions set
|
|
* forth in the LICENSE file which can be found at the top level of
|
|
* the sendmail distribution.
|
|
*
|
|
* $Id: smdb.h,v 8.38 2001/11/19 19:30:03 gshapiro Exp $
|
|
*
|
|
*/
|
|
|
|
#ifndef _SMDB_H_
|
|
# define _SMDB_H_
|
|
|
|
# include <sys/types.h>
|
|
# include <sys/stat.h>
|
|
# include <sm/gen.h>
|
|
# include <sm/errstring.h>
|
|
|
|
# ifdef NDBM
|
|
# include <ndbm.h>
|
|
# endif /* NDBM */
|
|
|
|
# ifdef NEWDB
|
|
# include <db.h>
|
|
# ifndef DB_VERSION_MAJOR
|
|
# define DB_VERSION_MAJOR 1
|
|
# endif /* ! DB_VERSION_MAJOR */
|
|
# endif /* NEWDB */
|
|
|
|
/*
|
|
** Some size constants
|
|
*/
|
|
|
|
#define SMDB_MAX_USER_NAME_LEN 1024
|
|
#define SMDB_MAX_NAME_LEN 1024
|
|
|
|
/*
|
|
** This file defines the abstraction for database lookups. It is pretty
|
|
** much a copy of the db2 interface with the exception that every function
|
|
** returns 0 on success and non-zero on failure. The non-zero return code
|
|
** is meaningful.
|
|
**
|
|
** I'm going to put the function comments in this file since the interface
|
|
** MUST be the same for all inheritors of this interface.
|
|
*/
|
|
|
|
typedef struct database_struct SMDB_DATABASE;
|
|
typedef struct cursor_struct SMDB_CURSOR;
|
|
typedef struct entry_struct SMDB_DBENT;
|
|
|
|
/*
|
|
** DB_CLOSE_FUNC -- close the database
|
|
**
|
|
** Parameters:
|
|
** db -- The database to close.
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_close_func) __P((SMDB_DATABASE *db));
|
|
|
|
/*
|
|
** DB_DEL_FUNC -- removes a key and data pair from the database
|
|
**
|
|
** Parameters:
|
|
** db -- The database to close.
|
|
** key -- The key to remove.
|
|
** flags -- delete options. There are currently no defined
|
|
** flags for delete.
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_del_func) __P((SMDB_DATABASE *db,
|
|
SMDB_DBENT *key, unsigned int flags));
|
|
|
|
/*
|
|
** DB_FD_FUNC -- Returns a pointer to a file used for the database.
|
|
**
|
|
** Parameters:
|
|
** db -- The database to close.
|
|
** fd -- A pointer to store the returned fd in.
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_fd_func) __P((SMDB_DATABASE *db, int* fd));
|
|
|
|
/*
|
|
** DB_GET_FUNC -- Gets the data associated with a key.
|
|
**
|
|
** Parameters:
|
|
** db -- The database to close.
|
|
** key -- The key to access.
|
|
** data -- A place to store the returned data.
|
|
** flags -- get options. There are currently no defined
|
|
** flags for get.
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_get_func) __P((SMDB_DATABASE *db,
|
|
SMDB_DBENT *key,
|
|
SMDB_DBENT *data, unsigned int flags));
|
|
|
|
/*
|
|
** DB_PUT_FUNC -- Sets some data according to the key.
|
|
**
|
|
** Parameters:
|
|
** db -- The database to close.
|
|
** key -- The key to use.
|
|
** data -- The data to store.
|
|
** flags -- put options:
|
|
** SMDBF_NO_OVERWRITE - Return an error if key alread
|
|
** exists.
|
|
** SMDBF_ALLOW_DUP - Allow duplicates in btree maps.
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_put_func) __P((SMDB_DATABASE *db,
|
|
SMDB_DBENT *key,
|
|
SMDB_DBENT *data, unsigned int flags));
|
|
|
|
/*
|
|
** DB_SYNC_FUNC -- Flush any cached information to disk.
|
|
**
|
|
** Parameters:
|
|
** db -- The database to sync.
|
|
** flags -- sync options:
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_sync_func) __P((SMDB_DATABASE *db, unsigned int flags));
|
|
|
|
/*
|
|
** DB_SET_OWNER_FUNC -- Set the owner and group of the database files.
|
|
**
|
|
** Parameters:
|
|
** db -- The database to set.
|
|
** uid -- The UID for the new owner (-1 for no change)
|
|
** gid -- The GID for the new owner (-1 for no change)
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_set_owner_func) __P((SMDB_DATABASE *db, uid_t uid, gid_t gid));
|
|
|
|
/*
|
|
** DB_CURSOR -- Obtain a cursor for sequential access
|
|
**
|
|
** Parameters:
|
|
** db -- The database to use.
|
|
** cursor -- The address of a cursor pointer.
|
|
** flags -- sync options:
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_cursor_func) __P((SMDB_DATABASE *db,
|
|
SMDB_CURSOR **cursor, unsigned int flags));
|
|
|
|
typedef int (*db_lockfd_func) __P((SMDB_DATABASE *db));
|
|
|
|
struct database_struct
|
|
{
|
|
db_close_func smdb_close;
|
|
db_del_func smdb_del;
|
|
db_fd_func smdb_fd;
|
|
db_get_func smdb_get;
|
|
db_put_func smdb_put;
|
|
db_sync_func smdb_sync;
|
|
db_set_owner_func smdb_set_owner;
|
|
db_cursor_func smdb_cursor;
|
|
db_lockfd_func smdb_lockfd;
|
|
void *smdb_impl;
|
|
};
|
|
/*
|
|
** DB_CURSOR_CLOSE -- Close a cursor
|
|
**
|
|
** Parameters:
|
|
** cursor -- The cursor to close.
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_cursor_close_func) __P((SMDB_CURSOR *cursor));
|
|
|
|
/*
|
|
** DB_CURSOR_DEL -- Delete the key/value pair of this cursor
|
|
**
|
|
** Parameters:
|
|
** cursor -- The cursor.
|
|
** flags -- flags
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_cursor_del_func) __P((SMDB_CURSOR *cursor,
|
|
unsigned int flags));
|
|
|
|
/*
|
|
** DB_CURSOR_GET -- Get the key/value of this cursor.
|
|
**
|
|
** Parameters:
|
|
** cursor -- The cursor.
|
|
** key -- The current key.
|
|
** value -- The current value
|
|
** flags -- flags
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
** SMDBE_LAST_ENTRY - This is a success condition that
|
|
** gets returned when the end of the
|
|
** database is hit.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_cursor_get_func) __P((SMDB_CURSOR *cursor,
|
|
SMDB_DBENT *key,
|
|
SMDB_DBENT *data,
|
|
unsigned int flags));
|
|
|
|
/*
|
|
** Flags for DB_CURSOR_GET
|
|
*/
|
|
|
|
#define SMDB_CURSOR_GET_FIRST 0
|
|
#define SMDB_CURSOR_GET_LAST 1
|
|
#define SMDB_CURSOR_GET_NEXT 2
|
|
#define SMDB_CURSOR_GET_RANGE 3
|
|
|
|
/*
|
|
** DB_CURSOR_PUT -- Put the key/value at this cursor.
|
|
**
|
|
** Parameters:
|
|
** cursor -- The cursor.
|
|
** key -- The current key.
|
|
** value -- The current value
|
|
** flags -- flags
|
|
**
|
|
** Returns:
|
|
** 0 - Success, otherwise errno.
|
|
**
|
|
*/
|
|
|
|
typedef int (*db_cursor_put_func) __P((SMDB_CURSOR *cursor,
|
|
SMDB_DBENT *key,
|
|
SMDB_DBENT *data,
|
|
unsigned int flags));
|
|
|
|
|
|
|
|
struct cursor_struct
|
|
{
|
|
db_cursor_close_func smdbc_close;
|
|
db_cursor_del_func smdbc_del;
|
|
db_cursor_get_func smdbc_get;
|
|
db_cursor_put_func smdbc_put;
|
|
void *smdbc_impl;
|
|
};
|
|
|
|
|
|
struct database_params_struct
|
|
{
|
|
unsigned int smdbp_num_elements;
|
|
unsigned int smdbp_cache_size;
|
|
bool smdbp_allow_dup;
|
|
};
|
|
|
|
typedef struct database_params_struct SMDB_DBPARAMS;
|
|
|
|
struct database_user_struct
|
|
{
|
|
uid_t smdbu_id;
|
|
gid_t smdbu_group_id;
|
|
char smdbu_name[SMDB_MAX_USER_NAME_LEN];
|
|
};
|
|
|
|
typedef struct database_user_struct SMDB_USER_INFO;
|
|
|
|
struct entry_struct
|
|
{
|
|
void *data;
|
|
size_t size;
|
|
};
|
|
|
|
typedef char *SMDB_DBTYPE;
|
|
typedef unsigned int SMDB_FLAG;
|
|
|
|
/*
|
|
** These are types of databases.
|
|
*/
|
|
|
|
# define SMDB_TYPE_DEFAULT NULL
|
|
# define SMDB_TYPE_DEFAULT_LEN 0
|
|
# define SMDB_TYPE_HASH "hash"
|
|
# define SMDB_TYPE_HASH_LEN 5
|
|
# define SMDB_TYPE_BTREE "btree"
|
|
# define SMDB_TYPE_BTREE_LEN 6
|
|
# define SMDB_TYPE_NDBM "dbm"
|
|
# define SMDB_TYPE_NDBM_LEN 4
|
|
|
|
/*
|
|
** These are flags
|
|
*/
|
|
|
|
/* Flags for put */
|
|
# define SMDBF_NO_OVERWRITE 0x00000001
|
|
# define SMDBF_ALLOW_DUP 0x00000002
|
|
|
|
|
|
extern SMDB_DATABASE *smdb_malloc_database __P((void));
|
|
extern void smdb_free_database __P((SMDB_DATABASE *));
|
|
extern int smdb_open_database __P((SMDB_DATABASE **, char *, int,
|
|
int, long, SMDB_DBTYPE,
|
|
SMDB_USER_INFO *,
|
|
SMDB_DBPARAMS *));
|
|
# ifdef NEWDB
|
|
extern int smdb_db_open __P((SMDB_DATABASE **, char *, int, int,
|
|
long, SMDB_DBTYPE, SMDB_USER_INFO *,
|
|
SMDB_DBPARAMS *));
|
|
# endif /* NEWDB */
|
|
# ifdef NDBM
|
|
extern int smdb_ndbm_open __P((SMDB_DATABASE **, char *, int, int,
|
|
long, SMDB_DBTYPE,
|
|
SMDB_USER_INFO *,
|
|
SMDB_DBPARAMS *));
|
|
# endif /* NDBM */
|
|
extern int smdb_add_extension __P((char *, int, char *, char *));
|
|
extern int smdb_setup_file __P((char *, char *, int, long,
|
|
SMDB_USER_INFO *, struct stat *));
|
|
extern int smdb_lock_file __P((int *, char *, int, long, char *));
|
|
extern int smdb_unlock_file __P((int));
|
|
extern int smdb_filechanged __P((char *, char *, int,
|
|
struct stat *));
|
|
extern void smdb_print_available_types __P((void));
|
|
extern char *smdb_db_definition __P((SMDB_DBTYPE));
|
|
extern int smdb_lock_map __P((SMDB_DATABASE *, int));
|
|
extern int smdb_unlock_map __P((SMDB_DATABASE *));
|
|
#endif /* ! _SMDB_H_ */
|