glibc/nss/nss_db/dummy-db.h

#include <stdint.h>

#include "nss_db.h"

/* This file contains dummy definitions of the DB structure of the
   Berkeley DB.  We are only interested in the function pointers since
   this is the interface to the database.  Unfortunately the structure
   changed over time and we have to take this into account.  */

/* The values to select the database type are unchanged over the version.
   Define only what we really need.  */
#define DB_BTREE	(1)

/* Permission flags are also not changed.  */
#define DB_RDONLY	0x010000

/* Access methods.  */
#define DB24_FIRST		0x000020
#define DB24_NEXT		0x000800
#define DB24_NOOVERWRITE	0x001000


/* This is for the db-2.x version up to 2.x.y.  We use the name `db24' since
   this is the version which was shipped with glibc 2.1.  */
struct db24
{
  void	*mutexp;
  enum { dummy24 } type;
  void *dbenv;
  void *mp_dbenv;
  void *master;
  void *internal;
  void *mp;
  void *mpf;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } curs_queue;
  struct {
    void *lh_first;
  } handleq;
  struct {
    void *le_next;
    void **le_prev;
  } links;
  uint32_t log_fileid;
  void *txn;
  uint32_t locker;
  struct db24_dbt {
    void *data;
    uint32_t size;
    uint32_t ulen;
    uint32_t dlen;
    uint32_t doff;
    uint32_t flags;
  } lock_dbt;
  struct{
    uint32_t pgno;
    uint8_t fileid[20];
  } lock;
  size_t pgsize;
  void *db_malloc;
  /* Functions. */
  int (*close) (void *, uint32_t);
  int (*cursor) (void *, void *, void **);
  int (*del) (void *, void *, DBT *, uint32_t);
  int (*fd) (void *, int *);
  int (*get) (void *, void *, DBT *, DBT *, uint32_t);
  int (*put) (void *, void *, DBT *, DBT *, uint32_t);
  int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
  int (*sync) (void *, uint32_t);
  uint32_t flags;
};


struct dbc24
{
  void *dbp;
  void *txn;
  struct
  {
    void *tqe_next;
    void **tqe_prev;
  } links;
  void *internal;
  void *c_close;
  void *c_del;
  int (*c_get) (void *, void *, void *, uint32_t);
  void *c_put;
};

/* Flags which changed.  */
#define DB24_TRUNCATE	0x080000


/* Versions for 2.7, slightly incompatible with version 2.4.  */
struct db27
{
  void	*mutexp;
  enum { dummy27 } type;
  int byteswapped;
  int saved_open_fd;
  void *dbenv;
  void *mp_dbenv;
  void *internal;
  void *mp;
  void *mpf;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } free_queue;
  struct
  {
    void *tqh_first;
    void **tqh_last;
  } active_queue;
  uint8_t fileid[20];
  uint32_t log_fileid;
  size_t pgsize;
  void *db_malloc;
  void *dup_compare;
  void *h_hash;
  /* Functions. */
  int (*am_close) (void *);
  int (*close) (void *, uint32_t);
  int (*cursor) (void *, void *, void **, uint32_t);
  int (*del) (void *, void *, DBT *, uint32_t);
  int (*fd) (void *, int *);
  int (*get) (void *, void *, DBT *, DBT *, uint32_t);
  int (*join) (void *, void **, uint32_t, void **);  
  int (*put) (void *, void *, DBT *, DBT *, uint32_t);
  int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
  int (*sync) (void *, uint32_t);
  uint32_t flags;
};


struct dbc27
{
  void *dbp;
  void *txn;
  struct
  {
    void *tqe_next;
    void **tqe_prev;
  } links;
  uint32_t lid;
  uint32_t locker;
  DBT lock_dbt;
  struct{
    uint32_t pgno;
    uint8_t fileid[20];
  } lock;
  size_t mylock;
  DBT rkey;
  DBT rdata;
  void *c_am_close;
  void *c_am_destroy;
  void *c_close;
  void *c_del;
  int (*c_get) (void *, void *, void *, uint32_t);
  void *c_put;
  void *internal;
  uint32_t flags;
};

/* Flags which changed.  */
#define DB27_TRUNCATE	0x020000

/* Access methods.  */
#define DB27_FIRST		7
#define DB27_NEXT		15
#define DB27_NOOVERWRITE	17