This file is indexed.

/usr/share/initramfs-tools/scripts/mdadm-functions is in mdadm 3.2.5-5ubuntu4.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh

txt_message ()
{
        if [ -x /bin/plymouth ] && plymouth --ping; then
	    return 0
        else
                echo "$@" >&2
        fi
        return 0
}

message()
{
        if [ -x /bin/plymouth ] && plymouth --ping; then
                plymouth message --text="$@"
        else
                echo "$@" >&2
        fi
        return 0
}


mountroot_fail()
{
    message "Incrementally starting RAID arrays..."
    if mdadm --incremental --run --scan; then
	message "Incrementally started RAID arrays."
	return 0
    else	
	if mdadm --assemble --scan --run; then
	    message "Assembled and started RAID arrays."
	    return 0
	else
	    message "Could not start RAID arrays in degraded mode."
	fi
    fi
    return 1
}