gamiddle@maytag.waterloo.edu (Guy Middleton) (09/20/90)
In RISC/os 4.30, /usr/ucb/mail was a symlink to mailx, which (like /bin/mail) was setgid-mail, presumably so it could write lockfiles in /usr/mail (which was mode 775, in group mail). In 4.50, /usr/bin/mailx is still setgid-mail, but /bin/mail is setgid-mail and setuid-root, and /usr/ucb/mail is entirely new, and is neither setuid nor setguid. /usr/mail is still 775, group mail. What's going on in 4.50? If /usr/ucb/mail is not setgid, how can it lock the mailboxes? Does it use flock() now? Is it still necessary for /usr/mail to be 775? We don't have 4.50 sources yet, so I'm puzzled. -Guy Middleton, University of Waterloo gamiddleton@watmath.waterloo.edu (+1 519 885 1211 x3472) gamiddleton@watmath.uwaterloo.ca