random number generator daemon - seed kernel random from hwrng
This daemon feeds data from a random number generator to the kernel's
random number entropy pool, after first checking the data to ensure
that it is properly random.
By default, a hardware rng at /dev/hwrng is used as entropy source.
This daemon is part of the rng-tools, which can be found at
http://sourceforge.net/projects/gkernel/
git://git.kernel.org/pub/scm/utils/kernel/rng-tools/rng-tools.git
Signed-off-by: Andreas Pretzsch <[email protected]>
---
Start script is kept as simple as possible, as this one runs rather
early and does not need much.
The link default of "S00" in rc.d is intentional. rc-once is S01 by
default and triggers things like ssh key generation. So while in
other cases I would have set rngd to something around S10, it has to
squeeze in before rc-once. As there are no udev depends (the other
S00), being a kernel provided device, this should be ok.
Placing the daemon in /sbin also follows this fact, beside its
very system-near function.
generic/etc/init.d/rngd | 40 +++++++++++++++++++++++++++++++++
rules/rng-tools-bbinit.in | 10 +++++++++
rules/rng-tools.in | 23 +++++++++++++++++++
rules/rng-tools.make | 57 +++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 130 insertions(+)
create mode 100644 generic/etc/init.d/rngd
create mode 100644 rules/rng-tools-bbinit.in
create mode 100644 rules/rng-tools.in
create mode 100644 rules/rng-tools.make
diff --git a/generic/etc/init.d/rngd b/generic/etc/init.d/rngd
new file mode 100644
index 0000000..cdae9db
--- /dev/null
+++ b/generic/etc/init.d/rngd
@@ -0,0 +1,40 @@
+#!/bin/sh
+#
+# Start/stop rngd (random number generator daemon) from rng-tools
+#
+
+# defaults are sane, normally no need to override
+OPTIONS=
+
+# pid-file created from rngd by default
+PIDFILE=/var/run/rngd.pid
+
+case $1 in
+ start)
+ if [ -e $PIDFILE ]; then
+ echo "rngd already running (found $PIDFILE)"
+ else
+ echo "starting rngd"
+ /sbin/rngd $OPTIONS
+ fi
+ ;;
+
+ stop)
+ if [ -e $PIDFILE ]; then
+ echo "stopping rngd"
+ kill -s SIGTERM `cat $PIDFILE`
+ else
+ echo "rngd not running (no $PIDFILE)"
+ fi
+ ;;
+
+ restart)
+ $0 stop
+ $0 start
+ ;;
+
+ *)
+ echo "Usage: ${0} {start|stop|restart}"
+ exit 1
+ ;;
+esac
diff --git a/rules/rng-tools-bbinit.in b/rules/rng-tools-bbinit.in
new file mode 100644
index 0000000..7cb74aa
--- /dev/null
+++ b/rules/rng-tools-bbinit.in
@@ -0,0 +1,10 @@
+## SECTION=initmethod_bbinit
+
+config RNG_TOOLS_BBINIT_LINK
+ string
+ depends on RNG_TOOLS_STARTSCRIPT
+ prompt "rng-tools"
+ default "S00rngd"
+ help
+ Order in start sequence.
+ Note: Start before rc-once to seed random before e.g. key creation.
diff --git a/rules/rng-tools.in b/rules/rng-tools.in
new file mode 100644
index 0000000..8282b93
--- /dev/null
+++ b/rules/rng-tools.in
@@ -0,0 +1,23 @@
+## SECTION=shell_and_console
+
+config RNG_TOOLS
+ tristate
+ prompt "rng-tools rngd"
+ help
+ random number generator daemon - seed kernel random from hwrng
+
+ This daemon feeds data from a random number generator to the kernel's
+ random number entropy pool, after first checking the data to ensure
+ that it is properly random.
+
+ By default, a hardware rng at /dev/hwrng is used as entropy source.
+
+ This daemon is part of the rng-tools, which can be found at
+ http://sourceforge.net/projects/gkernel/
+ git://git.kernel.org/pub/scm/utils/kernel/rng-tools/rng-tools.git
+
+config RNG_TOOLS_STARTSCRIPT
+ bool
+ default y
+ depends on RNG_TOOLS
+ prompt "install /etc/init.d/rngd"
diff --git a/rules/rng-tools.make b/rules/rng-tools.make
new file mode 100644
index 0000000..22f26fd
--- /dev/null
+++ b/rules/rng-tools.make
@@ -0,0 +1,57 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2014 by Andreas Pretzsch <[email protected]>
+#
+# See CREDITS for details about who has contributed to this project.
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+PACKAGES-$(PTXCONF_RNG_TOOLS) += rng-tools
+
+RNG_TOOLS_VERSION := 5
+RNG_TOOLS_MD5 := 6726cdc6fae1f5122463f24ae980dd68
+RNG_TOOLS := rng-tools-$(RNG_TOOLS_VERSION)
+RNG_TOOLS_SUFFIX := tar.gz
+RNG_TOOLS_URL := $(call ptx/mirror, SF,
gkernel/$(RNG_TOOLS).$(RNG_TOOLS_SUFFIX))
+RNG_TOOLS_SOURCE := $(SRCDIR)/$(RNG_TOOLS).$(RNG_TOOLS_SUFFIX)
+RNG_TOOLS_DIR := $(BUILDDIR)/$(RNG_TOOLS)
+RNG_TOOLS_LICENSE := GPLv2
+
+# ----------------------------------------------------------------------------
+# Prepare
+# ----------------------------------------------------------------------------
+
+RNG_TOOLS_CONF_TOOL := autoconf
+RNG_TOOLS_CONF_OPT := $(CROSS_AUTOCONF_ROOT)
+
+# ----------------------------------------------------------------------------
+# Target-Install
+# ----------------------------------------------------------------------------
+
+$(STATEDIR)/rng-tools.targetinstall:
+ @$(call targetinfo)
+
+ @$(call install_init, rng-tools)
+ @$(call install_fixup, rng-tools,PRIORITY,optional)
+ @$(call install_fixup, rng-tools,SECTION,base)
+ @$(call install_fixup, rng-tools,AUTHOR,"Andreas Pretzsch
<[email protected]>")
+ @$(call install_fixup, rng-tools,DESCRIPTION,"random number generator
daemon - seed kernel random from hwrng")
+
+ @$(call install_copy, rng-tools, 0, 0, 0755, -, /sbin/rngd)
+ifdef PTXCONF_INITMETHOD_BBINIT
+ifdef PTXCONF_RNG_TOOLS_STARTSCRIPT
+ @$(call install_alternative, rng-tools, 0, 0, 0755, /etc/init.d/rngd)
+ifneq ($(call remove_quotes,$(PTXCONF_RNG_TOOLS_BBINIT_LINK)),)
+ @$(call install_link, rng-tools, \
+ ../init.d/rngd, \
+ /etc/rc.d/$(PTXCONF_RNG_TOOLS_BBINIT_LINK))
+endif
+endif
+endif
+ @$(call install_finish, rng-tools)
+
+ @$(call touch)
+
+# vim: syntax=make
--
2.1.1
--
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