From ca2cab5dcd3d29f45992a439f54e48faad764c6e Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Sat, 14 Aug 2010 19:17:37 +0200
Subject: [PATCH] random-seed: add little tool for saving/loading random seed
 on shutdown/boot, but don't enable it by default

---
 Makefile.am                               | 17 ++++++++++++++++-
 fixme                                     |  2 +-
 units/systemd-random-seed-load.service.in | 20 ++++++++++++++++++++
 units/systemd-random-seed-save.service.in | 19 +++++++++++++++++++
 4 files changed, 56 insertions(+), 2 deletions(-)
 create mode 100644 units/systemd-random-seed-load.service.in
 create mode 100644 units/systemd-random-seed-save.service.in

diff --git a/Makefile.am b/Makefile.am
index 2c1caa59..384778ee 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -50,6 +50,7 @@ AM_CPPFLAGS = \
 	-DSYSTEMD_BINARY_PATH=\"$(rootbindir)/systemd\" \
 	-DSYSTEMCTL_BINARY_PATH=\"$(rootbindir)/systemctl\" \
 	-DRUNTIME_DIR=\"$(localstatedir)/run\" \
+	-DRANDOM_SEED=\"$(localstatedir)/lib/random-seed\" \
 	-I $(top_srcdir)/src
 
 rootbin_PROGRAMS = \
@@ -69,7 +70,8 @@ rootlibexec_PROGRAMS = \
 	systemd-logger \
 	systemd-cgroups-agent \
 	systemd-initctl \
-	systemd-update-utmp
+	systemd-update-utmp \
+	systemd-random-seed
 
 noinst_PROGRAMS = \
 	test-engine \
@@ -161,6 +163,8 @@ nodist_systemunit_DATA = \
 	units/systemd-logger.service \
 	units/systemd-update-utmp-runlevel.service \
 	units/systemd-update-utmp-shutdown.service \
+	units/systemd-random-seed-save.service \
+	units/systemd-random-seed-load.service \
 	units/syslog.target
 
 dist_sessionunit_DATA = \
@@ -180,6 +184,8 @@ EXTRA_DIST = \
 	units/systemd-logger.service.in \
 	units/systemd-update-utmp-runlevel.service.in \
 	units/systemd-update-utmp-shutdown.service.in \
+	units/systemd-random-seed-save.service.in \
+	units/systemd-random-seed-load.service.in \
 	units/syslog.target.in \
 	units/session/exit.service.in \
 	systemd.pc.in
@@ -514,6 +520,15 @@ systemd_update_utmp_LDADD = \
 	$(DBUS_LIBS) \
 	$(AUDIT_LIBS)
 
+systemd_random_seed_SOURCES = \
+	src/random-seed.c
+
+systemd_random_seed_CFLAGS = \
+	$(AM_CFLAGS)
+
+systemd_random_seed_LDADD = \
+	libsystemd-basic.la
+
 systemd_cgroups_agent_SOURCES = \
 	src/cgroups-agent.c \
 	src/dbus-common.c
diff --git a/fixme b/fixme
index e9acede7..2df43c34 100644
--- a/fixme
+++ b/fixme
@@ -23,7 +23,7 @@
 
 * add #ifdefs for non-sysv builds
 
-* reinvestigate random seed, hwclock
+* reinvestigate hwclock
 
 * "disabled" load state?
 
diff --git a/units/systemd-random-seed-load.service.in b/units/systemd-random-seed-load.service.in
new file mode 100644
index 00000000..4d5841d6
--- /dev/null
+++ b/units/systemd-random-seed-load.service.in
@@ -0,0 +1,20 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Load Random Seed
+DefaultDependencies=no
+After=local-fs.target
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Service]
+Type=oneshot
+ExecStart=-@rootlibexecdir@/systemd-random-seed load
+
+[Install]
+WantedBy=sysinit.target
diff --git a/units/systemd-random-seed-save.service.in b/units/systemd-random-seed-save.service.in
new file mode 100644
index 00000000..654c859e
--- /dev/null
+++ b/units/systemd-random-seed-save.service.in
@@ -0,0 +1,19 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Save Random Seed
+DefaultDependencies=no
+Before=poweroff.service reboot.service halt.service killall.service
+Conflicts=systemd-random-seed-save.service
+
+[Service]
+Type=oneshot
+ExecStart=-@rootlibexecdir@/systemd-random-seed save
+
+[Install]
+WantedBy=shutdown.target
-- 
2.39.5