ACC SHELL

#! /bin/bash

IFS=$'\n'

case "$1" in
kernel-module-*)    ;; # Fedora kernel module package names start with
		       # kernel-module.
kernel*)	    is_kernel_package=1 ;;
esac

all_provides() {
    for module in "$@"; do
	nm "$module"
    done \
    | sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):\1\t\2:p' \
    | sort -t $'\t' -k2 -u
}

all_requires() {
    for module in "$@"; do
	set -- $(/sbin/modinfo -F vermagic "$module" | sed -e 's: .*::' -e q)
	/sbin/modprobe --dump-modversions "$module" \
	    | sed -r -e 's:^0x0*::' -e 's:$:\t'"$1"':'
    done \
    | sort -t $'\t' -k2 -u
}

if ! [ -z "$is_kernel_package" -a -e /sbin/modinfo -a -e /sbin/modprobe ]; then
    cat > /dev/null
    exit 0
fi

modules=($(grep -E '/lib/modules/.+\.ko$'))
if [ ${#modules[@]} -gt 0 ]; then
    symset_table=$(mktemp -t ${0##*/}.XXXXX)
    /usr/lib/rpm/symset-table | sort -t $'\t' -k 1,1 > $symset_table

    join -t $'\t' -j 1 -a 2 $symset_table <(
	# Filter out requirements that we fulfill ourself.
	join -t $'\t' -j 2 -v 1 \
	    <(all_requires "${modules[@]}") \
	    <(all_provides "${modules[@]}") \
	| awk '
	BEGIN { FS = "\t" ; OFS = "\t" }
	{ print $3 "/" $2 "/" $1 }
	' \
	| sort -t $'\t' -k 1,1 -u) \
    | sort -u \
    | awk '
    { FS = "\t" ; OFS = "\t" }
	    { split($1, arr, "/")
	      flavor = gensub(/.*-/, "", "", arr[1]) }
    NF == 3 { print "kernel(" flavor ":" $2 ") = " $3
	      next }
	    { print "ksym(" flavor ":" arr[3] ") = " arr[2] }
    '
fi