use warnings;
my $CMD="/usr/libexec/openssh/sftp-server";
-my $PATH="/tmp";
+my $PATH="/FIXME";
+my $UID=FIXME;
%ENV=(); # Prevent: Insecure $ENV{PATH} while running with -T switch
chroot $PATH or die "chroot: $PATH: $!";
+($<,$>)=($UID,$UID);
+$<==$UID or die "real UID==$<, expected $UID";
+$>==$UID or die "EUID==$>, expected $UID";
chdir "/" or die "chdir: $!";
exec $CMD;
die "$CMD: $!";