James Youngman <j...@gnu.org> ha escrit:
> It's possible that one of the process's supplementary groups is
> privileged. So we may also need to do something like this:
>
> #if HAVE_SETGROUPS
> /* Use of setgroups() is restricted to root only. */
> if (0 =3D=3D geteuid())
> {
> /* We're either root or running setuid-root. */
> gid_t groups[1];
> groups[0] =3D gid;
> if (0 !=3D setgroups(1u, groups))
Yes, but on the other hand the caller might need to retain some
supplementary groups when dropping privileges. Perhaps it is worth
to provide a mechanism for that too? Something like
idpriv_drop_grp (size_t ngrp, gid_t *groups)
Regards,
Sergey
