Alan Cox (alan@xxxxxxxxxx): > > We now call: > > setuid( getuid() ); > > Be careful opening devices that way. Admins set permissions on rtc and > video and expect them to be honoured That seems silly. /dev/rtc is useless unless you can get > 64hz from it, but it's also (annoyingly!) exclusive, one user only. Seems like alot of bother for me to honour premissions on the device when I'm just going to be cruel and get higher resolution from it, and furthermore require user to set up groups if they don't want people stealing it away. But it does make sense I guess for /dev/video devices.. So, to avoid being inconsistent I guess I'll do the 'right thing'. > Also you want to do > > if(setresuid(getuid(), getuid(), getuid())==-1) > exit(1); > > [clear real effective and saved user id]. Its basically the same thing > but using stronger washing powder 8) Ok, thanks for the advice. I'm not sure what error message to report if that fails. Will it return -1 under any consistent operating conditions? -- Billy Biggs vektor@xxxxxxxxxxxx
