dist/nvi/common/db.h

   1 /*      $NetBSD: db.h,v 1.2 2008/05/20 17:53:18 aymeric Exp $ */
   2
   3 #include <db.h>
   4
   5 #ifndef DB_BUFFER_SMALL
   6 #define DB_BUFFER_SMALL         ENOMEM
   7 #endif
   8
   9 #if USE_DB1 || (DB_VERSION_MAJOR >= 3 && DB_VERSION_MINOR >= 1)
  10 #define db_env_open(env,path,flags,mode)                                \
  11     (env)->open(env, path, flags, mode)
  12 #define db_env_remove(env,path,flags)                                   \
  13     (env)->remove(env, path, flags)
  14 #else
  15 #define db_env_open(env,path,flags,mode)                                \
  16     (env)->open(env, path, NULL, flags, mode)
  17 #define db_env_remove(env,path,flags)                                   \
  18     (env)->remove(env, path, NULL, flags)
  19 #endif
  20
  21 #if DB_VERSION_MAJOR >= 4 && DB_VERSION_MINOR >= 1
  22 #define db_open(db,file,type,flags,mode)                                \
  23     (db)->open(db, NULL, file, NULL, type, flags, mode)
  24 #else
  25 #define db_open(db,file,type,flags,mode)                                \
  26     (db)->open(db, file, NULL, type, flags, mode)
  27 #endif
  28
  29 #ifdef USE_DYNAMIC_LOADING
  30 #define db_create       nvi_db_create
  31 #define db_env_create   nvi_db_env_create
  32 #define db_strerror     nvi_db_strerror
  33
  34 extern int   (*nvi_db_create) __P((DB **, DB_ENV *, u_int32_t));
  35 extern int   (*nvi_db_env_create) __P((DB_ENV **, u_int32_t));
  36 extern char *(*nvi_db_strerror) __P((int));
  37 #endif
  38
  39 #ifdef USE_DB1
  40
  41 #define DB_AFTER        1
  42 #define DB_APPEND       2
  43 #define DB_BEFORE       3
  44 #define DB_FIRST        7
  45 #define DB_LAST         15
  46 #define DB_SET          25
  47
  48 #define DB_NOTFOUND (-30989)
  49
  50 /* DBT emulation */
  51 typedef DBT DBT_v1;
  52 #undef DBT
  53 #define DBT DBT_new
  54
  55 typedef struct {
  56         void *data;
  57         size_t size;
  58
  59         u_int32_t ulen;
  60
  61 #define DB_DBT_USERMEM 0x040
  62         u_int32_t flags;
  63 } DBT;
  64
  65 /* DB_ENV emulation */
  66 struct __db_env_new;
  67 typedef struct __db_env_new DB_ENV;
  68
  69 struct __db_env_new {
  70         int (*close)(DB_ENV *, u_int32_t);
  71         int (*open)(DB_ENV *, char *, u_int32_t, int);
  72 #define DB_INIT_MPOOL   0x004000
  73 #define DB_PRIVATE      0x200000
  74         int (*remove)(DB_ENV *, char *, u_int32_t);
  75
  76         char *base_path;
  77         int mode;
  78 };
  79
  80 /* DBC emulation */
  81
  82 struct __dbc_new;
  83 typedef struct __dbc_new DBC;
  84
  85 typedef recno_t db_recno_t;
  86 #define DB_MAX_RECORDS MAX_REC_NUMBER
  87
  88 #define DB_UNKNOWN (-1)
  89
  90 /* DB emulation */
  91 typedef DB DB_old;
  92 #undef DB
  93 #define DB DB_new
  94 typedef struct __db_new DB;
  95
  96 #undef DB_TXN
  97 typedef void DB_TXN;
  98
  99 #undef DB_LSN
 100 typedef struct {
 101         int dummy;
 102 } DB_LSN;
 103
 104 struct __db_new {
 105         DB_old *actual_db;
 106
 107         int type;
 108
 109         int (*close)(DB *, u_int32_t);
 110 #define DB_NOSYNC       26              /* close() */
 111
 112         int (*open)(DB *, const char *, const char *, DBTYPE, u_int32_t, int);
 113 #define DB_CREATE       0x000001        /* Create file as necessary. */
 114 #define DB_TRUNCATE     0x004000        /* Discard existing DB (O_TRUNC) */
 115
 116         int (*sync)(DB *, u_int32_t);
 117         int (*get)(DB *, DB_TXN *, DBT *, DBT *, u_int32_t);
 118         int (*put)(DB *, DB_TXN *, DBT *, DBT *, u_int32_t);
 119         int (*del)(DB *, DB_TXN *, DBT *, u_int32_t);
 120
 121         int (*cursor)(DB *, DB_TXN *, DBC **, u_int32_t);
 122
 123         int (*set_flags)(DB *, u_int32_t);
 124 #define DB_RENUMBER     0x0008          /* Recno: renumber on insert/delete. */
 125 #define DB_SNAPSHOT     0x0020          /* Recno: snapshot the input. */
 126
 127         int (*set_pagesize)(DB *, u_int32_t);
 128
 129         int (*set_re_delim)(DB *, int);
 130         int (*set_re_source)(DB *, const char *);
 131
 132         RECNOINFO _recno_info;
 133         u_int32_t _pagesize;
 134         u_int32_t _flags;
 135 };
 136
 137 struct __dbc_new {
 138         DB *db;
 139         db_recno_t pos;
 140         DBT_v1 pos_key;
 141         int (*c_close)(DBC *);
 142         int (*c_get)(DBC *, DBT *, DBT *, u_int32_t);
 143         int (*c_put)(DBC *, DBT *, DBT *, u_int32_t);
 144 };
 145
 146 #endif /* USE_DB1 */