Text File

Aucbvax.4475 fa.unix-wizards utzoo!decvax!ucbvax!unix-wizards Thu Oct 15 23:32:12 1981 Re: double setuid programs >From Mike.Accetta@CMU-10A Thu Oct 15 20:34:13 1981 Mark,

setuid(geteuid()) has been allowed (in VM/UNIX at least) for as long as I can remember. Note the second line of setuid(2) in the 4.0/1 manual:

"... These calls are only permitted to the super-user or if the argument is the real or effective ID."

Checking back to the original 32V manual does reveal that this is indeed not the case in 32V. I have actually used setuid(geteuid()) for purposes similar to what you mention and have come across no problems (a swap effective/real id call would still be nice, though).

- Mike

----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen <jgoerzen@complete.org> of http://communication.ucsd.edu/A-News/

This Usenet Oldnews Archive article may be copied and distributed freely, provided:

1. There is no money collected for the text(s) of the articles.

2. The following notice remains appended to each copy:

The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.