sys-apps/shadow: Sync with Gentoo

It's from Gentoo commit 424160f038e977b10a54d626c0789a5dd10daaf0. Signed-off-by: Flatcar Buildbot <buildbot@flatcar-linux.org>
2026-02-09 09:41:56 +01:00 · 2026-01-12 07:16:57 +00:00 · 2026-01-12 07:16:57 +00:00 · deb314b0a9
commit deb314b0a9
parent 65db77bc78
4 changed files with 596 additions and 0 deletions
--- a/sdk_container/src/third_party/portage-stable/sys-apps/shadow/Manifest
+++ b/sdk_container/src/third_party/portage-stable/sys-apps/shadow/Manifest
@ -1,2 +1,4 @@
 DIST shadow-4.14.8.tar.xz 1806352 BLAKE2B a6ed45e44560c68baec97072399c106060be859a0f9514da2e5b0ec373e5b9c9f54b402132f39c20401496a5b3faeaa0bc90e1b9f02dd2e3b3ffc7389d0745bb SHA512 6f98ef412874f91cfa3f08877f3fe058d725636705b07d473aa1ea44cb6864059701bd11513caf692d270a7ed8ab1956e04421e53dfb8c74e925b8ec12ab8634
 DIST shadow-4.14.8.tar.xz.asc 833 BLAKE2B 1b8b8f3f36e06c1dda0a4e0d1508b1ad0ef85f0fa993a92a583831687076ba22d05f47109d56c1e740b60632c3bbeeb6c8cc001e41f46b1a2f9177ce62854f8c SHA512 1db2647babe3f434204c93e7700ff6a0ece078f6c5adb96ae0c0ac9d82a862835c4ab8afb37b0ffc80cf62e9a59f1ba33a92ff454e7ae0ca2aa535b19627615e
+DIST shadow-4.19.0-rc1.tar.xz 2386400 BLAKE2B cc7d09b87d535fe4317fc85a788293fefb5ef4cf1b4a86d4b3499476945c13ee652a17656c88a05efd8031b3bbe9c2aeda3069e9a149b6906f134d690ce2e11e SHA512 cf382d2dd7e9acd991fc5c2c91d4e984ae52ee8ddc9cb688a6c3911627d43ea395fe90f1b8430d0ed8dc240a0ad810c5074e62ef7751052d9680b004a9de04f8
+DIST shadow-4.19.0-rc1.tar.xz.asc 488 BLAKE2B 00968b448d91558117a1958ebd984cd23fdbe1e414230f8c17b3ca98176ffd1768c04fd9afb44eea080f3bcd7a104efe1f8169052329d5a00b987af8cf6f7c4f SHA512 993963f6ef0a9501d4fc2fabfb7d330280b07e916bc61bd254bd1bb8d795166423e4bcbe662a6bad0026f5556becb43d12ed8c99b4ea285b43fffa8264bd1c85
--- a/sdk_container/src/third_party/portage-stable/sys-apps/shadow/files/shadow-4.19.0-rc1-SIZE_MAX.patch
+++ b/sdk_container/src/third_party/portage-stable/sys-apps/shadow/files/shadow-4.19.0-rc1-SIZE_MAX.patch
@ -0,0 +1,37 @@
+From 1f01737845d2fcfcc3238988fea2c7e1fc2703b4 Mon Sep 17 00:00:00 2001
+From: Mike Gilbert <floppym@gentoo.org>
+Date: Sat, 13 Dec 2025 15:07:02 -0500
+Subject: [PATCH] lib/xgetXXbyYY.c: include stdint.h for SIZE_MAX
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Fixes build failure:
+```
+In file included from xgetgrnam.c:40:
+xgetXXbyYY.c: In function ‘xgetgrnam’:
+xgetXXbyYY.c:83:31: error: ‘SIZE_MAX’ undeclared (first use in this function)
+   83 |                 if (length == SIZE_MAX) {
+      |                               ^~~~~~~~
+```
+
+Signed-off-by: Mike Gilbert <floppym@gentoo.org>
+---
+ lib/xgetXXbyYY.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/lib/xgetXXbyYY.c b/lib/xgetXXbyYY.c
+index 2c9dbda5..58902120 100644
+--- a/lib/xgetXXbyYY.c
+++ b/lib/xgetXXbyYY.c
+@@ -29,6 +29,7 @@
+ #include <unistd.h>
+ #include <stdlib.h>
+ #include <stdio.h>
+#include <stdint.h>
+ #include <errno.h>
+ 
+ #include "alloc/malloc.h"
+-- 
+2.52.0
+
--- a/sdk_container/src/third_party/portage-stable/sys-apps/shadow/shadow-4.14.8-r2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-apps/shadow/shadow-4.14.8-r2.ebuild
@ -0,0 +1,291 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Upstream sometimes pushes releases as pre-releases before marking them
+# official. Don't keyword the pre-releases!
+# Check https://github.com/shadow-maint/shadow/releases.
+
+inherit libtool pam user-info verify-sig
+
+DESCRIPTION="Utilities to deal with user accounts"
+HOMEPAGE="https://github.com/shadow-maint/shadow"
+SRC_URI="https://github.com/shadow-maint/shadow/releases/download/${PV}/${P}.tar.xz"
+SRC_URI+=" verify-sig? ( https://github.com/shadow-maint/shadow/releases/download/${PV}/${P}.tar.xz.asc )"
+
+LICENSE="BSD GPL-2"
+# Subslot is for libsubid's SONAME.
+SLOT="0/4"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="acl audit cracklib nls pam selinux skey split-usr su systemd xattr"
+# Taken from the man/Makefile.am file.
+LANGS=( cs da de es fi fr hu id it ja ko pl pt_BR ru sv tr zh_CN zh_TW )
+
+REQUIRED_USE="?? ( cracklib pam )"
+
+COMMON_DEPEND="
+	virtual/libcrypt:=
+	acl? ( sys-apps/acl:= )
+	audit? ( >=sys-process/audit-2.6:= )
+	cracklib? ( >=sys-libs/cracklib-2.7-r3:= )
+	nls? ( virtual/libintl )
+	pam? ( sys-libs/pam:= )
+	skey? ( sys-auth/skey:= )
+	selinux? (
+		>=sys-libs/libselinux-1.28:=
+		sys-libs/libsemanage:=
+	)
+	systemd? ( sys-apps/systemd:= )
+	xattr? ( sys-apps/attr:= )
+	!<sys-libs/glibc-2.38
+"
+DEPEND="
+	${COMMON_DEPEND}
+	>=sys-kernel/linux-headers-4.14
+"
+RDEPEND="
+	${COMMON_DEPEND}
+	acct-group/shadow
+	pam? ( >=sys-auth/pambase-20150213 )
+	su? ( !sys-apps/util-linux[su(-)] )
+"
+BDEPEND="
+	acct-group/shadow
+	app-arch/xz-utils
+	sys-devel/gettext
+"
+
+if [[ ${PV} == *.0 ]]; then
+	BDEPEND+=" verify-sig? ( sec-keys/openpgp-keys-sergehallyn )"
+	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/sergehallyn.asc
+else
+	BDEPEND+=" verify-sig? ( sec-keys/openpgp-keys-alejandro-colomar )"
+	VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/alejandro-colomar.asc
+fi
+
+src_prepare() {
+	default
+	elibtoolize
+}
+
+src_configure() {
+	local myeconfargs=(
+		# Negate new upstream default of disabling for now
+		--enable-lastlog
+		--disable-account-tools-setuid
+		--disable-static
+		--with-btrfs
+		# Use bundled replacements for readpassphrase and freezero
+		--without-libbsd
+		--without-group-name-max-length
+		--without-tcb
+		--with-bcrypt
+		--with-yescrypt
+		$(use_enable nls)
+		# TODO: wire up upstream for elogind too (bug #931119)
+		$(use_enable systemd logind)
+		$(use_with acl)
+		$(use_with audit)
+		$(use_with cracklib libcrack)
+		$(use_with elibc_glibc nscd)
+		$(use_with pam libpam)
+		$(use_with selinux)
+		$(use_with skey)
+		$(use_with su)
+		$(use_with xattr attr)
+	)
+
+	econf "${myeconfargs[@]}"
+
+	if use nls ; then
+		local l langs="po" # These are the pot files.
+		for l in ${LANGS[*]} ; do
+			has ${l} ${LINGUAS-${l}} && langs+=" ${l}"
+		done
+		sed -i "/^SUBDIRS = /s:=.*:= ${langs}:" man/Makefile || die
+	fi
+}
+
+set_login_opt() {
+	local comment="" opt=${1} val=${2}
+	if [[ -z ${val} ]]; then
+		comment="#"
+		sed -i \
+			-e "/^${opt}\>/s:^:#:" \
+			"${ED}"/etc/login.defs || die
+	else
+		sed -i -r \
+			-e "/^#?${opt}\>/s:.*:${opt} ${val}:" \
+			"${ED}"/etc/login.defs
+	fi
+	local res=$(grep "^${comment}${opt}\>" "${ED}"/etc/login.defs)
+	einfo "${res:-Unable to find ${opt} in /etc/login.defs}"
+}
+
+src_install() {
+	emake DESTDIR="${D}" suidperms=4755 install
+
+	fowners :shadow /usr/bin/{chage,expiry}
+	fperms u-s,g+s /usr/bin/{chage,expiry}
+
+	# 4.9 regression: https://github.com/shadow-maint/shadow/issues/389
+	emake DESTDIR="${D}" -C man install
+
+	find "${ED}" -name '*.la' -type f -delete || die
+
+	insinto /etc
+	if ! use pam ; then
+		insopts -m0600
+		doins etc/login.access etc/limits
+	fi
+
+	# needed for 'useradd -D'
+	insinto /etc/default
+	insopts -m0600
+	doins "${FILESDIR}"/default/useradd
+
+	if use split-usr ; then
+		# move passwd to / to help recover broke systems #64441
+		# We cannot simply remove this or else net-misc/scponly
+		# and other tools will break because of hardcoded passwd
+		# location
+		dodir /bin
+		mv "${ED}"/usr/bin/passwd "${ED}"/bin/ || die
+		dosym ../../bin/passwd /usr/bin/passwd
+	fi
+
+	cd "${S}" || die
+	insinto /etc
+	insopts -m0644
+	newins etc/login.defs login.defs
+
+	set_login_opt CREATE_HOME yes
+	if ! use pam ; then
+		set_login_opt MAIL_CHECK_ENAB no
+		set_login_opt SU_WHEEL_ONLY yes
+		set_login_opt CRACKLIB_DICTPATH /usr/lib/cracklib_dict
+		set_login_opt LOGIN_RETRIES 3
+		set_login_opt ENCRYPT_METHOD YESCRYPT
+		set_login_opt CONSOLE
+	else
+		dopamd "${FILESDIR}"/pam.d-include/shadow
+
+		for x in chsh chfn ; do
+			newpamd "${FILESDIR}"/pam.d-include/passwd ${x}
+		done
+
+		for x in chpasswd newusers ; do
+			newpamd "${FILESDIR}"/pam.d-include/chpasswd ${x}
+		done
+
+		newpamd "${FILESDIR}"/pam.d-include/shadow-r1 groupmems
+
+		# Comment out login.defs options that pam hates
+		local opt sed_args=()
+		for opt in \
+			CHFN_AUTH \
+			CONSOLE \
+			CRACKLIB_DICTPATH \
+			ENV_HZ \
+			ENVIRON_FILE \
+			FAILLOG_ENAB \
+			FTMP_FILE \
+			LASTLOG_ENAB \
+			MAIL_CHECK_ENAB \
+			MOTD_FILE \
+			NOLOGINS_FILE \
+			OBSCURE_CHECKS_ENAB \
+			PASS_ALWAYS_WARN \
+			PASS_CHANGE_TRIES \
+			PASS_MIN_LEN \
+			PORTTIME_CHECKS_ENAB \
+			QUOTAS_ENAB \
+			SU_WHEEL_ONLY
+		do
+			set_login_opt ${opt}
+			sed_args+=( -e "/^#${opt}\>/b pamnote" )
+		done
+		sed -i "${sed_args[@]}" \
+			-e 'b exit' \
+			-e ': pamnote; i# NOTE: This setting should be configured via /etc/pam.d/ and not in this file.' \
+			-e ': exit' \
+			"${ED}"/etc/login.defs || die
+
+		# Remove manpages that pam will install for us
+		# and/or don't apply when using pam
+		find "${ED}"/usr/share/man -type f \
+			'(' -name 'limits.5*' -o -name 'suauth.5*' ')' \
+			-delete
+
+		# Remove pam.d files provided by pambase.
+		rm "${ED}"/etc/pam.d/{login,passwd} || die
+		if use su ; then
+			rm "${ED}"/etc/pam.d/su || die
+		fi
+	fi
+
+	# Remove manpages that are handled by other packages
+	find "${ED}"/usr/share/man -type f \
+		'(' -name id.1 -o -name getspnam.3 ')' \
+		-delete || die
+
+	if ! use su ; then
+		find "${ED}"/usr/share/man -type f -name su.1 -delete || die
+	fi
+
+	cd "${S}" || die
+	dodoc ChangeLog NEWS TODO
+	newdoc README README.download
+	cd doc || die
+	dodoc HOWTO README* WISHLIST *.txt
+
+	if use elibc_musl; then
+		QA_CONFIG_IMPL_DECL_SKIP+=( sgetsgent )
+	fi
+}
+
+pkg_preinst() {
+	rm -f "${EROOT}"/etc/pam.d/system-auth.new \
+		"${EROOT}/etc/login.defs.new"
+}
+
+pkg_postinst() {
+	# Missing entries from /etc/passwd can cause odd system blips.
+	# See bug #829872.
+	if ! pwck -r -q -R "${EROOT:-/}" &>/dev/null ; then
+		ewarn "Running 'pwck' returned errors. Please run it manually to fix any errors."
+	fi
+
+	local group=shadow
+
+	if [[ -n ${ROOT} ]]; then
+		# Resolve to a group id using ${ROOT}/etc/passwd
+		group=$(egetent group shadow | cut -d: -f3)
+		if [[ -n ${group} ]]; then
+			chgrp "${group}" "${EROOT}"/usr/bin/{chage,expiry} &&
+			chmod g+s "${EROOT}"/usr/bin/{chage,expiry}
+		fi
+	fi
+
+	# Enable shadow groups.
+	if [[ ! -f "${EROOT}"/etc/gshadow ]] ; then
+		if grpck -r -R "${EROOT:-/}" 2>/dev/null ; then
+			grpconv -R "${EROOT:-/}"
+			if [[ -n ${group} ]]; then
+				chgrp "${group}" "${EROOT}"/etc/gshadow &&
+				chmod g+r "${EROOT}"/etc/gshadow
+			fi
+		else
+			ewarn "Running 'grpck' returned errors. Please run it by hand, and then"
+			ewarn "run 'grpconv' afterwards!"
+		fi
+	fi
+
+	[[ ! -f "${EROOT}"/etc/subgid ]] &&
+		touch "${EROOT}"/etc/subgid
+	[[ ! -f "${EROOT}"/etc/subuid ]] &&
+		touch "${EROOT}"/etc/subuid
+
+	einfo "The 'adduser' symlink to 'useradd' has been dropped."
+}
--- a/sdk_container/src/third_party/portage-stable/sys-apps/shadow/shadow-4.19.0_rc1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-apps/shadow/shadow-4.19.0_rc1.ebuild
@ -0,0 +1,266 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Upstream sometimes pushes releases as pre-releases before marking them
+# official. Don't keyword the pre-releases!
+# Check https://github.com/shadow-maint/shadow/releases.
+
+inherit libtool pam user-info verify-sig
+
+DESCRIPTION="Utilities to deal with user accounts"
+HOMEPAGE="https://github.com/shadow-maint/shadow"
+MY_PV="${PV/_/-}"
+MY_P="${PN}-${MY_PV}"
+SRC_URI="https://github.com/shadow-maint/shadow/releases/download/${MY_PV}/${MY_P}.tar.xz"
+SRC_URI+=" verify-sig? ( https://github.com/shadow-maint/shadow/releases/download/${MY_PV}/${MY_P}.tar.xz.asc )"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="BSD GPL-2"
+# Subslot is for libsubid's SONAME.
+SLOT="0/5"
+#KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="acl audit nls pam selinux skey split-usr su systemd test xattr"
+RESTRICT="!test? ( test )"
+
+COMMON_DEPEND="
+	virtual/libcrypt:=
+	acl? ( sys-apps/acl:= )
+	audit? ( >=sys-process/audit-2.6:= )
+	nls? ( virtual/libintl )
+	pam? ( sys-libs/pam:= )
+	skey? ( sys-auth/skey:= )
+	selinux? (
+		>=sys-libs/libselinux-1.28:=
+		sys-libs/libsemanage:=
+	)
+	systemd? ( sys-apps/systemd:= )
+	xattr? ( sys-apps/attr:= )
+	!<sys-libs/glibc-2.38
+"
+DEPEND="
+	${COMMON_DEPEND}
+	>=sys-kernel/linux-headers-4.14
+"
+RDEPEND="
+	${COMMON_DEPEND}
+	acct-group/shadow
+	pam? ( >=sys-auth/pambase-20150213 )
+	su? ( !sys-apps/util-linux[su(-)] )
+"
+BDEPEND="
+	acct-group/shadow
+	app-arch/xz-utils
+	sys-devel/gettext
+	test? ( dev-util/cmocka )
+"
+
+BDEPEND+=" verify-sig? ( sec-keys/openpgp-keys-sergehallyn )"
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/sergehallyn.asc
+
+PATCHES=(
+	"${FILESDIR}"/shadow-4.19.0-rc1-SIZE_MAX.patch
+)
+
+src_prepare() {
+	default
+	elibtoolize
+}
+
+set_login_opt() {
+	local comment="" opt=${1} val=${2}
+	if [[ -z ${val} ]]; then
+		comment="#"
+		sed -i \
+			-e "/^${opt}\>/s:^:#:" \
+			etc/login.defs || die
+	else
+		sed -i -r \
+			-e "/^#?${opt}\>/s:.*:${opt} ${val}:" \
+			etc/login.defs || die
+	fi
+	local res=$(grep "^${comment}${opt}\>" etc/login.defs)
+	einfo "${res:-Unable to find ${opt} in etc/login.defs}"
+}
+
+src_configure() {
+	local myeconfargs=(
+		# Negate new upstream default of disabling for now
+		--enable-lastlog
+		--disable-account-tools-setuid
+		--disable-static
+		--with-btrfs
+		# Use bundled replacements for readpassphrase and freezero
+		--without-libbsd
+		--without-group-name-max-length
+		--without-tcb
+		--with-bcrypt
+		--with-yescrypt
+		$(use_enable nls)
+		# TODO: wire up upstream for elogind too (bug #931119)
+		$(use_enable systemd logind)
+		$(use_with acl)
+		$(use_with audit)
+		$(use_with elibc_glibc nscd)
+		$(use_with pam libpam)
+		$(use_with selinux)
+		$(use_with skey)
+		$(use_with su)
+		$(use_with xattr attr)
+	)
+
+	econf "${myeconfargs[@]}"
+
+	set_login_opt CREATE_HOME yes
+	if use pam; then
+		# Comment out login.defs options that pam hates
+		local opts=(
+			CHFN_AUTH
+			CONSOLE
+			ENV_HZ
+			ENVIRON_FILE
+			FAILLOG_ENAB
+			FTMP_FILE
+			LASTLOG_ENAB
+			MAIL_CHECK_ENAB
+			MOTD_FILE
+			NOLOGINS_FILE
+			OBSCURE_CHECKS_ENAB
+			PASS_ALWAYS_WARN
+			PASS_CHANGE_TRIES
+			PASS_MIN_LEN
+			PORTTIME_CHECKS_ENAB
+			QUOTAS_ENAB
+			SU_WHEEL_ONLY
+		)
+		local opt sed_args=()
+		for opt in "${opts[@]}"; do
+			set_login_opt ${opt}
+			sed_args+=( -e "/^#${opt}\>/b pamnote" )
+		done
+		sed_args+=(
+			-e 'b exit'
+			-e ': pamnote; i# NOTE: This setting should be configured via /etc/pam.d/ and not in this file.'
+			-e ': exit'
+		)
+		sed -i "${sed_args[@]}" etc/login.defs || die
+	else
+		set_login_opt MAIL_CHECK_ENAB no
+		set_login_opt SU_WHEEL_ONLY yes
+		set_login_opt LOGIN_RETRIES 3
+		set_login_opt ENCRYPT_METHOD YESCRYPT
+		set_login_opt CONSOLE
+	fi
+}
+
+src_install() {
+	emake DESTDIR="${D}" suidperms=4755 install
+
+	fowners :shadow /usr/bin/{chage,expiry}
+	fperms u-s,g+s /usr/bin/{chage,expiry}
+
+	# 4.9 regression: https://github.com/shadow-maint/shadow/issues/389
+	emake DESTDIR="${D}" -C man install
+
+	find "${ED}" -name '*.la' -type f -delete || die
+
+	insinto /etc
+	doins etc/login.defs
+
+	# needed for 'useradd -D'
+	insopts -m0600
+	insinto /etc/default
+	doins "${FILESDIR}"/default/useradd
+
+	if ! use pam ; then
+		doins etc/login.access etc/limits
+	fi
+
+	if use split-usr ; then
+		# move passwd to / to help recover broke systems #64441
+		# We cannot simply remove this or else net-misc/scponly
+		# and other tools will break because of hardcoded passwd
+		# location
+		dodir /bin
+		mv "${ED}"/usr/bin/passwd "${ED}"/bin/ || die
+		dosym ../../bin/passwd /usr/bin/passwd
+	fi
+
+	if use pam; then
+		dopamd "${FILESDIR}"/pam.d-include/shadow
+
+		for x in chsh chfn ; do
+			newpamd "${FILESDIR}"/pam.d-include/passwd ${x}
+		done
+
+		for x in chpasswd newusers ; do
+			newpamd "${FILESDIR}"/pam.d-include/chpasswd ${x}
+		done
+
+		newpamd "${FILESDIR}"/pam.d-include/shadow-r1 groupmems
+
+		# Remove manpages that pam will install for us
+		# and/or don't apply when using pam
+		find "${ED}"/usr/share/man -type f \
+			'(' -name 'limits.5*' -o -name 'suauth.5*' ')' \
+			-delete
+
+		# Remove pam.d files provided by pambase.
+		rm "${ED}"/etc/pam.d/{login,passwd} || die
+		if use su ; then
+			rm "${ED}"/etc/pam.d/su || die
+		fi
+	fi
+
+	# Remove manpages that are handled by other packages
+	find "${ED}"/usr/share/man -type f -name getspnam.3 -delete || die
+
+	if ! use su ; then
+		find "${ED}"/usr/share/man -type f -name su.1 -delete || die
+	fi
+
+	dodoc README doc/HOWTO doc/README.limits
+
+	if use elibc_musl; then
+		QA_CONFIG_IMPL_DECL_SKIP+=( sgetsgent )
+	fi
+}
+
+pkg_postinst() {
+	# Missing entries from /etc/passwd can cause odd system blips.
+	# See bug #829872.
+	if ! pwck -r -q -R "${EROOT:-/}" &>/dev/null ; then
+		ewarn "Running 'pwck' returned errors. Please run it manually to fix any errors."
+	fi
+
+	local group=shadow
+
+	if [[ -n ${ROOT} ]]; then
+		# Resolve to a group id using ${ROOT}/etc/passwd
+		group=$(egetent group shadow | cut -d: -f3)
+		if [[ -n ${group} ]]; then
+			chgrp "${group}" "${EROOT}"/usr/bin/{chage,expiry} &&
+			chmod g+s "${EROOT}"/usr/bin/{chage,expiry}
+		fi
+	fi
+
+	# Enable shadow groups.
+	if [[ ! -f "${EROOT}"/etc/gshadow ]] ; then
+		if grpck -r -R "${EROOT:-/}" 2>/dev/null ; then
+			grpconv -R "${EROOT:-/}"
+			if [[ -n ${group} ]]; then
+				chgrp "${group}" "${EROOT}"/etc/gshadow &&
+				chmod g+r "${EROOT}"/etc/gshadow
+			fi
+		else
+			ewarn "Running 'grpck' returned errors. Please run it by hand, and then"
+			ewarn "run 'grpconv' afterwards!"
+		fi
+	fi
+
+	[[ ! -f "${EROOT}"/etc/subgid ]] &&
+		touch "${EROOT}"/etc/subgid
+	[[ ! -f "${EROOT}"/etc/subuid ]] &&
+		touch "${EROOT}"/etc/subuid
+}