Hello. Serge E. Hallyn wrote: > But your requirements are to ensure that an application accessing a > device at a well-known location get what it expect. Yes. That's the purpose of this filesystem. > So then the main quesiton is still the one I think Al had asked - what > keeps a rogue CAP_SYS_MOUNT process from doing > mount --bind /dev/hda1 /dev/null ? Excuse me, but I guess you meant "mount --bind /dev/ /root/" or something because mount operation requires directories. MAC can prevent a rogue CAP_SYS_MOUNT process from doing "mount --bind /dev/ /root/". For example, regarding TOMOYO Linux, you need to give "allow_mount /dev/ /root/ --bind 0" permission to permit "mount --bind /dev/ /root/" request. Did you mean "ln -s /dev/hda1 /dev/null" or "ln /dev/hda1 /dev/null"? No problem. MAC can prevent such requests too. Regards. - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
