nss/nss_db/dummy-db.h

   1 #include <stdint.h>
   2
   3 #include "nss_db.h"
   4
   5 /* This file contains dummy definitions of the DB structure of the
   6    Berkeley DB.  We are only interested in the function pointers since
   7    this is the interface to the database.  Unfortunately the structure
   8    changed over time and we have to take this into account.  */
   9
  10 /* The values to select the database type are unchanged over the version.
  11    Define only what we really need.  */
  12 #define DB_BTREE        (1)
  13
  14 /* Permission flags are also not changed.  */
  15 #define DB_RDONLY       0x010000
  16
  17 /* Access methods.  */
  18 #define DB24_FIRST              0x000020
  19 #define DB24_NEXT               0x000800
  20 #define DB24_NOOVERWRITE        0x001000
  21
  22
  23 /* This is for the db-2.x version up to 2.x.y.  We use the name `db24' since
  24    this is the version which was shipped with glibc 2.1.  */
  25 struct db24
  26 {
  27   void  *mutexp;
  28   enum { dummy24 } type;
  29   void *dbenv;
  30   void *mp_dbenv;
  31   void *master;
  32   void *internal;
  33   void *mp;
  34   void *mpf;
  35   struct
  36   {
  37     void *tqh_first;
  38     void **tqh_last;
  39   } curs_queue;
  40   struct {
  41     void *lh_first;
  42   } handleq;
  43   struct {
  44     void *le_next;
  45     void **le_prev;
  46   } links;
  47   uint32_t log_fileid;
  48   void *txn;
  49   uint32_t locker;
  50   struct db24_dbt {
  51     void *data;
  52     uint32_t size;
  53     uint32_t ulen;
  54     uint32_t dlen;
  55     uint32_t doff;
  56     uint32_t flags;
  57   } lock_dbt;
  58   struct{
  59     uint32_t pgno;
  60     uint8_t fileid[20];
  61   } lock;
  62   size_t pgsize;
  63   void *db_malloc;
  64   /* Functions. */
  65   int (*close) (void *, uint32_t);
  66   int (*cursor) (void *, void *, void **);
  67   int (*del) (void *, void *, DBT *, uint32_t);
  68   int (*fd) (void *, int *);
  69   int (*get) (void *, void *, DBT *, DBT *, uint32_t);
  70   int (*put) (void *, void *, DBT *, DBT *, uint32_t);
  71   int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
  72   int (*sync) (void *, uint32_t);
  73 };
  74
  75
  76 struct dbc24
  77 {
  78   void *dbp;
  79   void *txn;
  80   struct
  81   {
  82     void *tqe_next;
  83     void **tqe_prev;
  84   } links;
  85   void *internal;
  86   void *c_close;
  87   void *c_del;
  88   int (*c_get) (void *, void *, void *, uint32_t);
  89   void *c_put;
  90 };
  91
  92 /* Flags which changed.  */
  93 #define DB24_TRUNCATE   0x080000
  94
  95
  96 /* Versions for 2.7, slightly incompatible with version 2.4.  */
  97 struct db27
  98 {
  99   void  *mutexp;
 100   enum { dummy27 } type;
 101   int byteswapped;
 102   void *dbenv;
 103   void *mp_dbenv;
 104   void *internal;
 105   void *mp;
 106   void *mpf;
 107   struct
 108   {
 109     void *tqh_first;
 110     void **tqh_last;
 111   } free_queue;
 112   struct
 113   {
 114     void *tqh_first;
 115     void **tqh_last;
 116   } active_queue;
 117   struct {
 118     void *lh_first;
 119   } handleq;
 120   uint8_t fileid[20];
 121   uint32_t log_fileid;
 122   size_t pgsize;
 123   void *db_malloc;
 124   void *dup_compare;
 125   void *h_hash;
 126   /* Functions. */
 127   int (*am_close) (void *);
 128   int (*close) (void *, uint32_t);
 129   int (*cursor) (void *, void *, void **, uint32_t);
 130   int (*del) (void *, void *, DBT *, uint32_t);
 131   int (*fd) (void *, int *);
 132   int (*get) (void *, void *, DBT *, DBT *, uint32_t);
 133   int (*put) (void *, void *, DBT *, DBT *, uint32_t);
 134   int (*stat) (void *, void *, void *(*)(size_t), uint32_t);
 135   int (*sync) (void *, uint32_t);
 136 };
 137
 138
 139 struct dbc27
 140 {
 141   void *dbp;
 142   void *txn;
 143   struct
 144   {
 145     void *tqe_next;
 146     void **tqe_prev;
 147   } links;
 148   uint32_t lid;
 149   uint32_t locker;
 150   DBT lock_dbt;
 151   uint32_t lock[14];
 152   size_t mylock;
 153   DBT rkey;
 154   DBT rdata;
 155   void *c_am_close;
 156   void *c_am_destroy;
 157   void *c_close;
 158   void *c_del;
 159   int (*c_get) (void *, void *, void *, uint32_t);
 160   void *c_put;
 161   void *internal;
 162   uint32_t flags;
 163 };
 164
 165 /* Flags which changed.  */
 166 #define DB27_TRUNCATE   0x020000
 167
 168 /* Access methods.  */
 169 #define DB27_FIRST              7
 170 #define DB27_NEXT               15
 171 #define DB27_NOOVERWRITE        17