Mini Shell

#!/usr/bin/sh
#
# root=cifs://[user:pass@]<server>/<folder>
#
# This syntax can come from DHCP root-path as well.
#
# If a username or password are not specified as part of the root, then they
# will be pulled from cifsuser and cifspass on the kernel command line,
# respectively.
#

type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
. /lib/cifs-lib.sh

# This script is sourced, so root should be set. But let's be paranoid
[ -z "$root" ] && root=$(getarg root=)

if [ -z "$netroot" ]; then
    for netroot in $(getargs netroot=); do
        [ "${netroot%%:*}" = "cifs" ] && break
    done
    [ "${netroot%%:*}" = "cifs" ] || unset netroot
fi

# Root takes precedence over netroot
if [ "${root%%:*}" = "cifs" ]; then
    if [ -n "$netroot" ]; then
        warn "root takes precedence over netroot. Ignoring netroot"
    fi
    netroot=$root
    unset root
fi

# If it's not cifs we don't continue
[ "${netroot%%:*}" = "cifs" ] || return

# Check required arguments
cifs_to_var "$netroot"

# If we don't have a server, we need dhcp
if [ -z "$server" ]; then
    # shellcheck disable=SC2034
    DHCPORSERVER="1"
fi

# Done, all good!
# shellcheck disable=SC2034
rootok=1

# shellcheck disable=SC2016
echo '[ -e $NEWROOT/proc ]' > "$hookdir"/initqueue/finished/cifsroot.sh