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author | Abdoulaye Walsimou Gaye <walsimou@walsimou.com> | 2009-05-12 02:46:17 +0200 |
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committer | Abdoulaye Walsimou Gaye <walsimou@walsimou.com> | 2009-05-12 02:46:17 +0200 |
commit | 8c0ea1194bc0905926fb9e211c3356f2348c7ca7 (patch) | |
tree | ba98e07ed70e19ef2b60b5ae3206bcd2ad5f3b51 /src/target_skeleton/etc/init.d/S20urandom | |
download | embtoolkit-8c0ea1194bc0905926fb9e211c3356f2348c7ca7.tar.gz embtoolkit-8c0ea1194bc0905926fb9e211c3356f2348c7ca7.tar.bz2 embtoolkit-8c0ea1194bc0905926fb9e211c3356f2348c7ca7.tar.xz |
Embtoolkit: Fisrt commit
This is the first commit in the embedded system toolkit git repository, formaly
embtoolkit. This porject aims to design a tool which helps on building an
embedded linux system. The goal of this porject is to use EGLIBC as C Library
for linux systems generated.
This initial commit is manely just a backup in order to save work done.
Signed-off-by: Abdoulaye Walsimou Gaye <walsimou@walsimou.com>
Diffstat (limited to 'src/target_skeleton/etc/init.d/S20urandom')
-rwxr-xr-x | src/target_skeleton/etc/init.d/S20urandom | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/target_skeleton/etc/init.d/S20urandom b/src/target_skeleton/etc/init.d/S20urandom new file mode 100755 index 0000000..f73cea5 --- /dev/null +++ b/src/target_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 |