gcc-plugins: Add the randstruct plugin

[mirror_ubuntu-bionic-kernel.git] / scripts / gcc-plugins / gen-random-seed.sh

diff --git a/scripts/gcc-plugins/gen-random-seed.sh b/scripts/gcc-plugins/gen-random-seed.sh
new file mode 100644 (file)
index 0000000..7514850
--- /dev/null
+++ b/scripts/gcc-plugins/gen-random-seed.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+if [ ! -f "$1" ]; then
+       SEED=`od -A n -t x8 -N 32 /dev/urandom | tr -d ' \n'`
+       echo "const char *randstruct_seed = \"$SEED\";" > "$1"
+       HASH=`echo -n "$SEED" | sha256sum | cut -d" " -f1 | tr -d ' \n'`
+       echo "#define RANDSTRUCT_HASHED_SEED \"$HASH\"" > "$2"
+fi