Date: Fri, 6 Jan 1995 13:42:22 -0500 From: Garrett Wollman <wollman@halloran-eldar.lcs.mit.edu> To: jim@reptiles.org (Jim Mercer) Cc: bugs@freebsd.org, hackers@freebsd.org Subject: 2.0-R bug in setgroups() or sys/nfs/nfs_socket.c? Message-ID: <9501061842.AA07232@halloran-eldar.lcs.mit.edu> In-Reply-To: <m0rQIOZ-00033zC@iguana.reptiles.org> References: <m0rQIOZ-00033zC@iguana.reptiles.org>
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<<On Fri, 6 Jan 1995 12:24:10 -0500 (EST), jim@reptiles.org (Jim Mercer) said:
> #ifdef HAVE_SETGROUPS
> /* clear out all extra groups. We don't want to have to deal with them */
> {
> gid_t dummy;
> (void) setgroups(0, &dummy);
> }
> #endif /* HAVE_SETGROUPS */
> i cannot beleive that these other systems would behave the same (ie. panicing
> on NFS if no gid).
I suspect that, on those systems, the effective GID is not stored in
groups[0].
> should setgroups() set at least one group (ie. from the gid field in
> /etc/passwd)?
I believe that setgroups() should enforce a requirement for at least
one group. I'm not sure whether it should give an error and refuse to
do anything, or just silently preserve the egid.
-GAWollman
--
Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ...
wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance.
Opinions not those of| It is a bond more powerful than absence. We like people
MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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