1177 typedef struct sqlite3_vfs sqlite3_vfs;  typedef
1179 struct sqlite3_vfs {  struct
1183   sqlite3_vfs *pNext;      /* Next registered VFS */  argument
1186   int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*,  argument
1188   int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir);  argument
1189   int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut);  argument
1190   int (*xFullPathname)(sqlite3_vfs*, const char *zName, int nOut, char *zOut);  argument
1191   void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename);  argument
1192   void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);  argument
1193   void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);  argument
1194   void (*xDlClose)(sqlite3_vfs*, void*);  argument
1195   int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut);  argument
1196   int (*xSleep)(sqlite3_vfs*, int microseconds);  argument
1197   int (*xCurrentTime)(sqlite3_vfs*, double*);  argument
1198   int (*xGetLastError)(sqlite3_vfs*, int, char *);  argument
1203   int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*);  argument
1208   int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr);  argument
1209   sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName);  argument
1210   const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName);  argument
6040 SQLITE_API sqlite3_vfs *SQLITE_STDCALL sqlite3_vfs_find(const char *zVfsName);
6041 SQLITE_API int SQLITE_STDCALL sqlite3_vfs_register(sqlite3_vfs*, int makeDflt);
6042 SQLITE_API int SQLITE_STDCALL sqlite3_vfs_unregister(sqlite3_vfs*);