25 lines
506 B
Plaintext
25 lines
506 B
Plaintext
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#!/bin/bash
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set -e
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OLDPWD="$PWD"
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INPUT="$1"
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OUTPUT="$2"
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TEMP="$2.tmp"
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TYPE="$(file -b -L "$INPUT")"
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mkdir -p "$TEMP/basic"
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if [[ "$TYPE" == *"cpio archive"* ]]; then
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mkdir -p "$TEMP/microcode"
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cd "$TEMP/microcode"
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BLOCKS="$(cpio -i <"$INPUT" 2>&1 >/dev/null | tail -1)"
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BLOCKS="${BLOCKS%% *}"
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dd if="$INPUT" of="$TEMP/initrd.img" bs=512 skip=$BLOCKS
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cd "$TEMP/basic"
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zcat "$TEMP/initrd.img" | cpio -i
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rm "$TEMP/initrd.img"
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else
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cd "$TEMP/basic"
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zcat "$INPUT" | cpio -i
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fi
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mv "$TEMP" "$OUTPUT"
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