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53 lines
1.7 KiB
Bash
53 lines
1.7 KiB
Bash
#!/bin/ash
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run_hook() {
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# This is a needed kernel parameter for this hook
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if [ -n "$lukskeyfile" ]; then
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modprobe -a -q loop dm-crypt >/dev/null 2>&1
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# Refer to help from `mkinitcpio -H lukskeyfile`.
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IFS=: read rootKeyDev rootKey cryptkeyLoc <<EOF
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$lukskeyfile
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EOF
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if [ -z "${cryptkeyLoc}" ]; then
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cryptkeyLoc=/crypto_keyfile.bin
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fi
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# Ask user whether to detect the device (detecting may
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# take up a while and asking is faster)
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while true; do
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read -t5 -p "Use external key file? (default: yes, waiting 5s): " yn
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if [ $? -gt 0 ]; then
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echo "Timed out, assuming yes"
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break
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fi
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case $yn in
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[Yy]*)
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break
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;;
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[Nn]*) return 0;;
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"")
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echo "Default (yes)"
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break
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;;
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*) echo "Please answer yes or no.";;
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esac
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done
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# Resolve and mount the device, in case we can't mount, show error
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echo "Mounting device..."
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if resoleved=$(resolve_device "${rootKeyDev}" $rootdelay); then
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if mount -o noatime "${rootKeyDev}" /mnt>/dev/null 2>&1; then
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# Copy the keyfile present in the device into the
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# ramfs filesystem to be read by dm-crypt
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cat "/mnt/${rootKey}" > "${cryptkeyLoc}"
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else
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echo "Failed to mount ${rootKeyDev} on /mnt"
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/bin/sh
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fi
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else
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echo "Failed to find ${rootKeyDev} containing LUKS root key."
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fi
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fi
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}
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