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To enable Clang randstruct support, move the structure layout randomization seed generation out of scripts/gcc-plugins/ into scripts/basic/ so it happens early enough that it can be used by either compiler implementation. The gcc-plugin still builds its own header file, but now does so from the common "randstruct.seed" file. Cc: linux-hardening@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220503205503.3054173-6-keescook@chromium.org
7 lines
228 B
Bash
Executable file
7 lines
228 B
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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SEED=$(od -A n -t x8 -N 32 /dev/urandom | tr -d ' \n')
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echo "$SEED" > "$1"
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HASH=$(echo -n "$SEED" | sha256sum | cut -d" " -f1)
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echo "#define RANDSTRUCT_HASHED_SEED \"$HASH\"" > "$2"
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