external/bsd/nvi/dist/common/vi_db.h

   1 /*      $NetBSD: vi_db.h,v 1.3 2013/11/29 22:56:19 christos Exp $ */
   2
   3 #include <db.h>
   4
   5 #ifndef DB_BUFFER_SMALL
   6 #define DB_BUFFER_SMALL         ENOMEM
   7 #endif
   8
   9 #ifdef USE_BUNDLED_DB
  10
  11 typedef void DB_ENV;
  12
  13 typedef recno_t db_recno_t;
  14 #define DB_MAX_RECORDS MAX_REC_NUMBER
  15
  16 #define db_env_close(env,flags)
  17 #define db_env_create(env,flags)                                        \
  18         (((void)env), 1)
  19 #define db_env_remove(env,path,flags)                                   \
  20         1
  21 #define db_open(db,file,type,flags,mode)                                \
  22     (db)->open(db, file, NULL, type, flags, mode)
  23 #define db_get_low(db,key,data,flags)                                   \
  24     (db)->get(db, key, data, flags)
  25 #define db_close(db)                                                    \
  26     (db)->close(db)
  27
  28 #else
  29
  30 #if USE_DB1 || (DB_VERSION_MAJOR >= 3 && DB_VERSION_MINOR >= 1)
  31 #define db_env_open(env,path,flags,mode)                                \
  32     (env)->open(env, path, flags, mode)
  33 #define db_env_remove(env,path,flags)                                   \
  34     (env)->remove(env, path, flags)
  35 #else
  36 #define db_env_open(env,path,flags,mode)                                \
  37     (env)->open(env, path, NULL, flags, mode)
  38 #define db_env_remove(env,path,flags)                                   \
  39     (env)->remove(env, path, NULL, flags)
  40 #endif
  41
  42 #define db_env_close(env,flags)                                         \
  43     (env)->close(env, flags)
  44
  45 #if DB_VERSION_MAJOR >= 4 && DB_VERSION_MINOR >= 1
  46 #define db_open(db,file,type,flags,mode)                                \
  47     (db)->open(db, NULL, file, NULL, type, flags, mode)
  48 #else
  49 #define db_open(db,file,type,flags,mode)                                \
  50     (db)->open(db, file, NULL, type, flags, mode)
  51 #endif
  52 #define db_get_low(db,key,data,flags)                                   \
  53     (db)->get(db, NULL, key, data, flags)
  54 #define db_close(db)                                                    \
  55     (db)->close(db, DB_NOSYNC)
  56
  57 #endif
  58
  59 #ifdef USE_DYNAMIC_LOADING
  60 #define db_create       nvi_db_create
  61 #define db_env_create   nvi_db_env_create
  62 #define db_strerror     nvi_db_strerror
  63
  64 extern int   (*nvi_db_create) __P((DB **, DB_ENV *, u_int32_t));
  65 extern int   (*nvi_db_env_create) __P((DB_ENV **, u_int32_t));
  66 extern char *(*nvi_db_strerror) __P((int));
  67 #endif
  68
  69 #ifdef USE_DB1
  70
  71 #define DB_AFTER        1
  72 #define DB_APPEND       2
  73 #define DB_BEFORE       3
  74 #define DB_FIRST        7
  75 #define DB_LAST         15
  76 #define DB_SET          25
  77
  78 #define DB_NOTFOUND (-30989)
  79
  80 /* DBT emulation */
  81 typedef DBT DBT_v1;
  82 #undef DBT
  83 #define DBT DBT_new
  84
  85 typedef struct {
  86         void *data;
  87         size_t size;
  88
  89         u_int32_t ulen;
  90
  91 #define DB_DBT_USERMEM 0x040
  92         u_int32_t flags;
  93 } DBT;
  94
  95 /* DB_ENV emulation */
  96 struct __db_env_new;
  97 typedef struct __db_env_new DB_ENV;
  98
  99 struct __db_env_new {
 100         int (*close)(DB_ENV *, u_int32_t);
 101         int (*open)(DB_ENV *, char *, u_int32_t, int);
 102 #define DB_INIT_MPOOL   0x004000
 103 #define DB_PRIVATE      0x200000
 104         int (*remove)(DB_ENV *, char *, u_int32_t);
 105
 106         char *base_path;
 107         int mode;
 108 };
 109
 110 /* DBC emulation */
 111
 112 struct __dbc_new;
 113 typedef struct __dbc_new DBC;
 114
 115 typedef recno_t db_recno_t;
 116 #define DB_MAX_RECORDS MAX_REC_NUMBER
 117
 118 #define DB_UNKNOWN (-1)
 119
 120 /* DB emulation */
 121 typedef DB DB_old;
 122 #undef DB
 123 #define DB DB_new
 124 typedef struct __db_new DB;
 125
 126 #undef DB_TXN
 127 typedef void DB_TXN;
 128
 129 #undef DB_LSN
 130 typedef struct {
 131         int dummy;
 132 } DB_LSN;
 133
 134 struct __db_new {
 135         DB_old *actual_db;
 136
 137         int type;
 138
 139         int (*close)(DB *, u_int32_t);
 140 #define DB_NOSYNC       26              /* close() */
 141
 142         int (*open)(DB *, const char *, const char *, DBTYPE, u_int32_t, int);
 143 #define DB_CREATE       0x000001        /* Create file as necessary. */
 144 #define DB_TRUNCATE     0x004000        /* Discard existing DB (O_TRUNC) */
 145
 146         int (*sync)(DB *, u_int32_t);
 147         int (*get)(DB *, DB_TXN *, DBT *, DBT *, u_int32_t);
 148         int (*put)(DB *, DB_TXN *, DBT *, DBT *, u_int32_t);
 149         int (*del)(DB *, DB_TXN *, DBT *, u_int32_t);
 150
 151         int (*cursor)(DB *, DB_TXN *, DBC **, u_int32_t);
 152
 153         int (*set_flags)(DB *, u_int32_t);
 154 #define DB_RENUMBER     0x0008          /* Recno: renumber on insert/delete. */
 155 #define DB_SNAPSHOT     0x0020          /* Recno: snapshot the input. */
 156
 157         int (*set_pagesize)(DB *, u_int32_t);
 158
 159         int (*set_re_delim)(DB *, int);
 160         int (*set_re_source)(DB *, const char *);
 161
 162         RECNOINFO _recno_info;
 163         u_int32_t _pagesize;
 164         u_int32_t _flags;
 165 };
 166
 167 struct __dbc_new {
 168         DB *db;
 169         db_recno_t pos;
 170         DBT_v1 pos_key;
 171         int (*c_close)(DBC *);
 172         int (*c_get)(DBC *, DBT *, DBT *, u_int32_t);
 173         int (*c_put)(DBC *, DBT *, DBT *, u_int32_t);
 174 };
 175
 176 #endif /* USE_DB1 */