linux-programming-interface-exercises
linux-programming-interface-exercises copied to clipboard
Published
20 hours ago •
posborne
posborne
Exercise 9-5
trafficstars
Hello, your ideas have impressed and helped me a lot. Thanks! Exercise 9-5 answer may have a mistake.
// setuid()
/* suspend not possible */
/* resume not possible */
setuid(getuid()); /* Permanently drop privileges*/
Indeed, for a set-UID-root program, setuid(uid) with a nonzero uid can permanently drop privilege as this will set RUID/EUID/SUID all to uid
