Hubris introduces a unique concept with its 13th and oddest syscall, REPLY_FAULT, which allows servers to kill tasks with faults instead of having unnecessary error handling for IPC operations. This aggressive approach, similar to hardware faults, ensures errors are caught early and simplifies system reasoning. Despite concerns, REPLY_FAULT has been surprisingly beneficial for developers, enhancing the system’s security by responding aggressively to misbehavior. While challenging to fuzz test, Hubris remains hostile to malicious programs, offering a new level of protection. The decision to implement REPLY_FAULT showcases Hubris’s innovative and robust design for handling IPC operations. #api-design #dayjob #embedded #rust #security
https://cliffle.com/blog/hubris-reply-fault/