Am Sonntag, den 08.02.2009, 23:59 +0800 schrieb email@example.com:
> Me as root user of a server wish to share the control privilege (to
> start and stop) a daemon with another non-root user and find it
> difficult. The requirement: 1) either me or him can start the daemon
> then stop it; 2) he can stop the daemon started by me; 3) I can stop the
> daemon started by him.
> 3) is very easy because I am root; 1) is also easy, difficult part is 2).
> I first thought of setting the process suid and make him owner of the
> executable. However I found if I do so, the process starts with his
> privilege while belonging to me, he could not signal the processes of mine.
> Is the requirement 2 possible with Linux? How?
> If the problem can be solved giving the setting two users both are not
> root, the solution would be even more preferable.
> Thanks in advance!
You can use app-admin/sudo to achieve your goal. It can be configured to
allow certain users to execute certain commands as other users (possibly
root). You can even restrict the allowed arguments to a command.