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#! /bin/bash
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# The modules_sign target checks for corresponding .o files for every .ko that
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# is signed. This doesn't work for package builds which re-use the same build
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# directory for every flavour, and the .config may change between flavours.
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# So instead of using this script to just sign lib/modules/$KernelVer/extra,
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# sign all .ko in the buildroot.
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# This essentially duplicates the 'modules_sign' Kbuild target and runs the
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# same commands for those modules.
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MODSECKEY=$1
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MODPUBKEY=$2
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moddir=$3
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modules=`find $moddir -type f -name '*.ko'`
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NPROC=`nproc`
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[ -z "$NPROC" ] && NPROC=1
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# NB: this loop runs 2000+ iterations. Try to be fast.
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echo "$modules" | xargs -r -n16 -P $NPROC sh -c "
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for mod; do
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    ./scripts/sign-file sha256 $MODSECKEY $MODPUBKEY \$mod
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    rm -f \$mod.sig \$mod.dig
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done
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" DUMMYARG0   # xargs appends ARG1 ARG2..., which go into $mod in for loop.
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RANDOMMOD=$(echo "$modules" | sort -R | head -n 1)
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if [ "~Module signature appended~" != "$(tail -c 28 $RANDOMMOD)" ]; then
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    echo "*****************************"
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    echo "*** Modules are unsigned! ***"
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    echo "*****************************"
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    exit 1
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fi
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exit 0