Pa UNIX , kulumikiza kophiphiritsira ndiko kumene fayilo muzolondomeko imodzi imakhala ngati pointer kwa fayilo muzolandila zina. Mwachitsanzo, mukhoza kupanga chiyanjano kuti zonse zopezeka pa fayilo / tmp / foo zichitedi pa fayilo / etc / passwd.
Zomwe Zimagwiritsidwa Ntchito Zogwiritsidwa Ntchito Zingagwiritsidwe Ntchito
Mbali imeneyi ingagwiritsidwe ntchito mobwerezabwereza. Ngakhale wosagwiritsa ntchito mzere alibe chilolezo cholembera ku mafayilo oyang'anira monga / etc / passwd, iwo angapange kulumikizana kwa iwo mu bukhu la / tmp kapena bukhu lawo. SUID ikhoza kugwiritsidwa ntchito kumene iwo amakhulupirira kuti ikuchita pa fayilo ya osuta, zomwe ziri mmalo mwake zimagwira pa fayilo yoyang'anira oyambirira. Imeneyi ndi njira yopambana yomwe ogwiritsira ntchito angagwiritsire ntchito mwayi wawo pantchito. Chitsanzo: chala Wogwiritsa ntchito akhoza kulumikiza mafayilo awo pa fayilo iliyonse pa dongosolo. Daemon yachitsulo yokhala ndi maudindo a mizu ikanatsatira tsatanetsatane wa fayiloyo ndi kuiwerenga ponyamula katemera.