chroot: don't setgroups() without -G having been specifiedHEADmain

We previously would not have setgroups() at all, but now we would drop
our supplementary groups every time.  This broke chroot -n, probably
among other things.  We need tests here, but lets unbreak things first.

A future change may try to setgroups(2) when -u is specified in addition
to -G, so predicate the call on gidlist and don't populate that without
a grouplist.

PR:		288751
Fixes:	48fd05999b0f ("chroot: don't clobber the egid [...]")

0 files changed, 0 insertions, 0 deletions