26   sqlite3_vfs *pRootVfs;              /* The underlying real VFS */
30   sqlite3_vfs *pTraceVfs;             /* Pointer back to the trace VFS */
67 static int vfstraceOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *);
68 static int vfstraceDelete(sqlite3_vfs*, const char *zName, int syncDir);
69 static int vfstraceAccess(sqlite3_vfs*, const char *zName, int flags, int *);
70 static int vfstraceFullPathname(sqlite3_vfs*, const char *zName, int, char *);
71 static void *vfstraceDlOpen(sqlite3_vfs*, const char *zFilename);
72 static void vfstraceDlError(sqlite3_vfs*, int nByte, char *zErrMsg);
73 static void (*vfstraceDlSym(sqlite3_vfs*,void*, const char *zSymbol))(void);
74 static void vfstraceDlClose(sqlite3_vfs*, void*);
75 static int vfstraceRandomness(sqlite3_vfs*, int nByte, char *zOut);
76 static int vfstraceSleep(sqlite3_vfs*, int microseconds);
77 static int vfstraceCurrentTime(sqlite3_vfs*, double*);
78 static int vfstraceGetLastError(sqlite3_vfs*, int, char*);
79 static int vfstraceCurrentTimeInt64(sqlite3_vfs*, sqlite3_int64*);
80 static int vfstraceSetSystemCall(sqlite3_vfs*,const char*, sqlite3_syscall_ptr);
81 static sqlite3_syscall_ptr vfstraceGetSystemCall(sqlite3_vfs*, const char *);
82 static const char *vfstraceNextSystemCall(sqlite3_vfs*, const char *zName);
483   sqlite3_vfs *pVfs,  in vfstraceOpen()
492   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceOpen()
538 static int vfstraceDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){  in vfstraceDelete()
540   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceDelete()
554   sqlite3_vfs *pVfs,   in vfstraceAccess()
560   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceAccess()
576   sqlite3_vfs *pVfs,   in vfstraceFullPathname()
582   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceFullPathname()
595 static void *vfstraceDlOpen(sqlite3_vfs *pVfs, const char *zPath){  in vfstraceDlOpen()
597   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceDlOpen()
607 static void vfstraceDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){  in vfstraceDlError()
609   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceDlError()
618 static void (*vfstraceDlSym(sqlite3_vfs *pVfs,void *p,const char *zSym))(void){  in vfstraceDlSym()
620   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceDlSym()
628 static void vfstraceDlClose(sqlite3_vfs *pVfs, void *pHandle){  in vfstraceDlClose()
630   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceDlClose()
639 static int vfstraceRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){  in vfstraceRandomness()
641   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceRandomness()
650 static int vfstraceSleep(sqlite3_vfs *pVfs, int nMicro){  in vfstraceSleep()
652   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceSleep()
659 static int vfstraceCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){  in vfstraceCurrentTime()
661   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceCurrentTime()
664 static int vfstraceCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *pTimeOut){  in vfstraceCurrentTimeInt64()
666   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceCurrentTimeInt64()
673 static int vfstraceGetLastError(sqlite3_vfs *pVfs, int iErr, char *zErr){  in vfstraceGetLastError()
675   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceGetLastError()
683   sqlite3_vfs *pVfs,  in vfstraceSetSystemCall()
688   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceSetSystemCall()
692   sqlite3_vfs *pVfs,  in vfstraceGetSystemCall()
696   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceGetSystemCall()
699 static const char *vfstraceNextSystemCall(sqlite3_vfs *pVfs, const char *zName){  in vfstraceNextSystemCall()
701   sqlite3_vfs *pRoot = pInfo->pRootVfs;  in vfstraceNextSystemCall()
721   sqlite3_vfs *pNew;  in vfstrace_register()
722   sqlite3_vfs *pRoot;  in vfstrace_register()