112   char *zFilename;      /* Filename.  NULL for delete-on-close. From malloc() */  member
245     g.aFile[i].zFilename = 0;  in formatVfs()
259     if( g.aFile[i].zFilename ){  in reformatVfs()
260       free(g.aFile[i].zFilename);  in reformatVfs()
261       g.aFile[i].zFilename = 0;  in reformatVfs()
280     if( g.aFile[i].zFilename==0 ) continue;     in findVFile()
281     if( strcmp(g.aFile[i].zFilename, zName)==0 ) return &g.aFile[i];  in findVFile()
301     pNew->zFilename = safe_realloc(0, nName);  in createVFile()
302     memcpy(pNew->zFilename, zName, nName);  in createVFile()
304     pNew->zFilename = 0;  in createVFile()
391 static char *readFile(const char *zFilename, long *sz){  in readFile()  argument
397   if( zFilename==0 ) return 0;  in readFile()
398   in = fopen(zFilename, "rb");  in readFile()
1344   if( pVFile->nRef==0 && pVFile->zFilename==0 ){  in inmemClose()
1460   const char *zFilename,  in inmemOpen()  argument
1465   VFile *pVFile = createVFile(zFilename, 0, (unsigned char*)"");  in inmemOpen()
1482   const char *zFilename,  in inmemDelete()  argument
1485   VFile *pVFile = findVFile(zFilename);  in inmemDelete()
1488     free(pVFile->zFilename);  in inmemDelete()
1489     pVFile->zFilename = 0;  in inmemDelete()
1502   const char *zFilename,  in inmemAccess()  argument
1506   VFile *pVFile = findVFile(zFilename);  in inmemAccess()
1515   const char *zFilename,  in inmemFullPathname()  argument
1519   sqlite3_snprintf(nOut, zOut, "%s", zFilename);  in inmemFullPathname()