sdyer@Bbn-Unix@sri-unix (09/04/82)
From: Steve Dyer <sdyer@Bbn-Unix> Date: 31 Aug 1982 12:00:39 EDT (Tuesday) At Harvard, we implemented the concept of "login uid" which was independent of the real or effective uid. We added two new system calls which set/retrieved the user's login uid. (It did a bit more than Dennis Ritchie's reference to adding a u.u_luid field, but functionally it had the same effect.) "login" set the luid before execing the user's shell. Worked fine--just the thing for for privileged programs which have to run in a hostile (read, student) environment. /Steve Dyer