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authorBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2007-02-15 15:11:34 +0000
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2007-02-15 15:11:34 +0000
commit2f67d9e2fe7bbec10e67bf7e52999c594c4d6400 (patch)
tree84e3428db35283defe8c6fa3446b65d8ae887693 /target/generic/target_busybox_skeleton/etc/init.d/S20urandom
parent0fed2766a40419cd325dbb8ec0ac29f96ccc1b83 (diff)
downloadbuildroot-novena-2f67d9e2fe7bbec10e67bf7e52999c594c4d6400.tar.gz
buildroot-novena-2f67d9e2fe7bbec10e67bf7e52999c594c4d6400.zip
- preparation for BR2_PACKAGE_BUSYBOX_SKELETON
"Use a minimal target skeleton for use with busybox's mdev et al"
Diffstat (limited to 'target/generic/target_busybox_skeleton/etc/init.d/S20urandom')
-rwxr-xr-xtarget/generic/target_busybox_skeleton/etc/init.d/S20urandom54
1 files changed, 54 insertions, 0 deletions
diff --git a/target/generic/target_busybox_skeleton/etc/init.d/S20urandom b/target/generic/target_busybox_skeleton/etc/init.d/S20urandom
new file mode 100755
index 000000000..f73cea59e
--- /dev/null
+++ b/target/generic/target_busybox_skeleton/etc/init.d/S20urandom
@@ -0,0 +1,54 @@
+#! /bin/sh
+#
+# urandom This script saves the random seed between reboots.
+# It is called from the boot, halt and reboot scripts.
+#
+# Version: @(#)urandom 1.33 22-Jun-1998 miquels@cistron.nl
+#
+
+[ -c /dev/urandom ] || exit 0
+#. /etc/default/rcS
+
+case "$1" in
+ start|"")
+ if [ "$VERBOSE" != no ]
+ then
+ echo -n "Initializing random number generator... "
+ fi
+ # Load and then save 512 bytes,
+ # which is the size of the entropy pool
+ if [ -f /etc/random-seed ]
+ then
+ cat /etc/random-seed >/dev/urandom
+ fi
+ # check for read only file system
+ if ! touch /etc/random-seed 2>/dev/null
+ then
+ echo "read-only file system detected...done"
+ exit
+ fi
+ rm -f /etc/random-seed
+ umask 077
+ dd if=/dev/urandom of=/etc/random-seed count=1 \
+ >/dev/null 2>&1 || echo "urandom start: failed."
+ umask 022
+ [ "$VERBOSE" != no ] && echo "done."
+ ;;
+ stop)
+ if ! touch /etc/random-seed 2>/dev/null
+ then
+ exit
+ fi
+ # Carry a random seed from shut-down to start-up;
+ # see documentation in linux/drivers/char/random.c
+ [ "$VERBOSE" != no ] && echo -n "Saving random seed... "
+ umask 077
+ dd if=/dev/urandom of=/etc/random-seed count=1 \
+ >/dev/null 2>&1 || echo "urandom stop: failed."
+ [ "$VERBOSE" != no ] && echo "done."
+ ;;
+ *)
+ echo "Usage: urandom {start|stop}" >&2
+ exit 1
+ ;;
+esac