823 int sqlite3_wasm_vfs_unlink(sqlite3_vfs *pVfs, const char * zName){  in sqlite3_wasm_vfs_unlink()  argument
825   if( 0==pVfs && 0!=zName ) pVfs = sqlite3_vfs_find(0);  in sqlite3_wasm_vfs_unlink()
826   if( zName && pVfs && pVfs->xDelete ){  in sqlite3_wasm_vfs_unlink()
827     rc = pVfs->xDelete(pVfs, zName, 1);  in sqlite3_wasm_vfs_unlink()
842   sqlite3_vfs * pVfs = 0;  in sqlite3_wasm_db_vfs()  local
844                        SQLITE_FCNTL_VFS_POINTER, &pVfs);  in sqlite3_wasm_db_vfs()
845   return pVfs;  in sqlite3_wasm_db_vfs()
988 int sqlite3_wasm_vfs_create_file( sqlite3_vfs *pVfs,  in sqlite3_wasm_vfs_create_file()  argument
1006   if( !pVfs ) pVfs = sqlite3_vfs_find(0);  in sqlite3_wasm_vfs_create_file()
1007   if( !pVfs || !zFilename || nData<0 ) return SQLITE_MISUSE;  in sqlite3_wasm_vfs_create_file()
1008   pVfs->xAccess(pVfs, zFilename, SQLITE_ACCESS_EXISTS, &fileExisted);  in sqlite3_wasm_vfs_create_file()
1009   rc = sqlite3OsOpenMalloc(pVfs, zFilename, &pFile, openFlags, &flagsOut);  in sqlite3_wasm_vfs_create_file()
1038     pVfs->xDelete(pVfs, zFilename, 1);  in sqlite3_wasm_vfs_create_file()