*** empty log message ***

db/sqlite3/src/Makefile.in

@@ -48,7 +48,7 @@ LIBRARY_NAME     = sqlite3_s
 MODULE_NAME      = sqlite3
 FORCE_STATIC_LIB = 1
 
-EXPORTS = sqlite3.h
+EXPORTS = sqlite3.h sqlite3file.h
 
 CSRCS = \
 	alter.c \
@@ -95,6 +95,8 @@ CSRCS = \
 	where.c \
 	$(NULL)
 
+DEFINES = -DSQLITE_ENABLE_REDEF_IO
+
 ifdef ENABLE_TESTS
 ##LIBS = $(DIST)/lib/$(LIB_PREFIX)sqlite3_s.$(LIB_SUFFIX)
 ##SIMPLE_PROGRAMS = sqlite-shell

db/sqlite3/src/sqlite3file.h

@@ -0,0 +1,137 @@
+
+extern "C" {
+
+struct ThreadData;
+
+/*
+** Some compilers do not support the "long long" datatype.  So we have
+** to do a typedef that for 64-bit integers that depends on what compiler
+** is being used.
+*/
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+  typedef __int64 sqlite_int64;
+  typedef unsigned __int64 sqlite_uint64;
+#else
+  typedef long long int sqlite_int64;
+  typedef unsigned long long int sqlite_uint64;
+#endif
+
+/*
+** Forward declarations
+*/
+typedef struct OsFile OsFile;
+typedef struct IoMethod IoMethod;
+
+/*
+** An instance of the following structure contains pointers to all
+** methods on an OsFile object.
+*/
+struct IoMethod {
+  int (*xClose)(OsFile**);
+  int (*xOpenDirectory)(OsFile*, const char*);
+  int (*xRead)(OsFile*, void*, int amt);
+  int (*xWrite)(OsFile*, const void*, int amt);
+  int (*xSeek)(OsFile*, sqlite_int64 offset);
+  int (*xTruncate)(OsFile*, sqlite_int64 size);
+  int (*xSync)(OsFile*, int);
+  void (*xSetFullSync)(OsFile *id, int setting);
+  int (*xFileHandle)(OsFile *id);
+  int (*xFileSize)(OsFile*, sqlite_int64 *pSize);
+  int (*xLock)(OsFile*, int);
+  int (*xUnlock)(OsFile*, int);
+  int (*xLockState)(OsFile *id);
+  int (*xCheckReservedLock)(OsFile *id);
+};
+
+/*
+** The OsFile object describes an open disk file in an OS-dependent way.
+** The version of OsFile defined here is a generic version.  Each OS
+** implementation defines its own subclass of this structure that contains
+** additional information needed to handle file I/O.  But the pMethod
+** entry (pointing to the virtual function table) always occurs first
+** so that we can always find the appropriate methods.
+*/
+struct OsFile {
+  IoMethod const *pMethod;
+};
+
+/*
+** When redefinable I/O is enabled, a single global instance of the
+** following structure holds pointers to the routines that SQLite 
+** uses to talk with the underlying operating system.  Modify this
+** structure (before using any SQLite API!) to accomodate perculiar
+** operating system interfaces or behaviors.
+*/
+struct sqlite3OsVtbl {
+  int (*xOpenReadWrite)(const char*, OsFile**, int*);
+  int (*xOpenExclusive)(const char*, OsFile**, int);
+  int (*xOpenReadOnly)(const char*, OsFile**);
+
+  int (*xDelete)(const char*);
+  int (*xFileExists)(const char*);
+  char *(*xFullPathname)(const char*);
+  int (*xIsDirWritable)(char*);
+  int (*xSyncDirectory)(const char*);
+  int (*xTempFileName)(char*);
+
+  int (*xRandomSeed)(char*);
+  int (*xSleep)(int ms);
+  int (*xCurrentTime)(double*);
+
+  void (*xEnterMutex)(void);
+  void (*xLeaveMutex)(void);
+  int (*xInMutex)(int);
+  ThreadData *(*xThreadSpecificData)(int);
+
+  void *(*xMalloc)(int);
+  void *(*xRealloc)(void *, int);
+  void (*xFree)(void *);
+  int (*xAllocationSize)(void *);
+};
+
+/* Macro used to comment out routines that do not exists when there is
+** no disk I/O 
+*/
+#ifdef SQLITE_OMIT_DISKIO
+# define IF_DISKIO(X)  0
+#else
+# define IF_DISKIO(X)  X
+#endif
+
+#ifdef _SQLITE_OS_C_
+  /*
+  ** The os.c file implements the global virtual function table.
+  */
+  struct sqlite3OsVtbl sqlite3Os = {
+    IF_DISKIO( sqlite3OsOpenReadWrite ),
+    IF_DISKIO( sqlite3OsOpenExclusive ),
+    IF_DISKIO( sqlite3OsOpenReadOnly ),
+    IF_DISKIO( sqlite3OsDelete ),
+    IF_DISKIO( sqlite3OsFileExists ),
+    IF_DISKIO( sqlite3OsFullPathname ),
+    IF_DISKIO( sqlite3OsIsDirWritable ),
+    IF_DISKIO( sqlite3OsSyncDirectory ),
+    IF_DISKIO( sqlite3OsTempFileName ),
+    sqlite3OsRandomSeed,
+    sqlite3OsSleep,
+    sqlite3OsCurrentTime,
+    sqlite3OsEnterMutex,
+    sqlite3OsLeaveMutex,
+    sqlite3OsInMutex,
+    sqlite3OsThreadSpecificData,
+    sqlite3OsMalloc,
+    sqlite3OsRealloc,
+    sqlite3OsFree,
+    sqlite3OsAllocationSize
+  };
+#else
+  /*
+  ** Files other than os.c just reference the global virtual function table. 
+  */
+  extern struct sqlite3OsVtbl sqlite3Os;
+#endif /* _SQLITE_OS_C_ */
+
+
+/* This additional API routine is available with redefinable I/O */
+struct sqlite3OsVtbl *sqlite3_os_switch(void);
+} // extern "C"