dracut/modules.d/90crypt/check

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#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
# if cryptsetup is not installed, then we cannot support encrypted devices.
type -P cryptsetup >/dev/null || exit 1
[ "$1" = "-d" ] && echo dm
. $dracutfunctions
is_crypt() { [[ $(get_fs_type /dev/block/$1) = crypto_LUKS ]]; }
[[ $1 = '-h' ]] && {
rootdev=$(find_root_block_device)
if [[ $rootdev ]]; then
# root lives on a block device, so we can be more precise about
# hostonly checking
check_block_and_slaves is_crypt "$rootdev" || exit 1
else
# root is not on a block device, use the shotgun approach
blkid | grep -q crypto\?_LUKS || exit 1
fi
}
exit 0