find_fixes_in_queue

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright 2020 Greg Kroah-Hartman <gregkh@linuxfoundation.org>
#
#

STABLE_TREE="/home/gregkh/linux/stable/linux-stable"
STABLE_QUEUE="/home/gregkh/linux/stable/stable-queue/"

REAL_SCRIPT=$(realpath -e "${BASH_SOURCE[0]}")
SCRIPT_TOP="${SCRIPT_TOP:-$(dirname "${REAL_SCRIPT}")}"

source "${SCRIPT_TOP}"/lib/common

TMPDIR="/home/gregkh/tmp"
PREFIX="$(basename "${REAL_SCRIPT}")_"
TMP_PREFIX="${TMPDIR}/${PREFIX}"

GEN_CID="${SCRIPT_TOP}/generate_cid.sh"
ID_FIXED_IN="${SCRIPT_TOP}/id_fixed_in"

usage()
{
        echo "error, kernel version not found"
        echo "usage:"
        echo "  $0 KERNEL_VERSION"
        exit 2
}

save_commit()
{
	local commit version mbox
	commit=$1
	version=$2
	mbox=$3

	#log "${txtylw}in ${version} release, SAVING!${txtrst}"
	git show --pretty=email "${commit}" | sed -e "s/\[PATCH\]/\[PATCH ${version}\]/" >> "${mbox}"
}

check_patch()
{
	local patch commit message
	patch=$1

	cd "${STABLE_QUEUE}/queue-${KERNEL_VERSION}/"
	commit=$(cat ${patch} | awk '{if(NR>1)print}' | grep -E -o '[0-9a-f]{40}' | head -n 1)
	if [ "${commit}" == "" ] ; then
		return
	fi

	# ${ID_FIXED_IN} will shorten the commit id
	message="${txtcyn}looking at ${txtgrn}${commit}${txtrst} "
	result=$(${ID_FIXED_IN} ${commit})
	retval=$?
	if [ $retval -eq 2 ] ; then
		log "${message}${txtred}not found!${txtrst}"
		return
	fi
	if [ $retval -ne 0 ] ; then
		log "${message}${txtpur}no fixes${txtrst}"
		return
	fi

	for line in ${result}; do
		line_array=(${line//:/ })
		sha1=${line_array[0]}
		kernel_version=${line_array[1]}
		commit_id=${line_array[2]}
		message+="${txtred}fix found in ${txtylw}${kernel_version}${txtrst} "

		# see if commit is already in the queue
		found=$(grep -l -r "${commit_id}" "${STABLE_QUEUE}/queue-${KERNEL_VERSION}/")
		if [ "${found}" == "" ] ; then
			save_commit "${commit_id}" "${kernel_version}" "${MBOX}"
			message+="${txtgrn}saved"
		else
			message+="${txtblu}already in queue"
		fi
	done
	log "${message}"
}

KERNEL_VERSION=$1

if [ "${KERNEL_VERSION}" == "" ] ; then
        usage
fi

MBOX=$(mktemp ${TMP_PREFIX}mbox.XXXXXX) || exit 1

cd "${STABLE_QUEUE}/queue-${KERNEL_VERSION}/"

threads=$(nproc)

log "using ${txtpur}${threads}${txtrst} threads"

for patch in *.patch ; do
	while :
	do
		if [ $(jobs -p | wc -l) -lt ${threads} ]; then
			check_patch $patch &
			break
		else
			sleep 1
		fi
	done
done
wait

num_commits=$(grep -c '^From ' ${MBOX})
if [ "${num_commits}" == "0" ] ; then
	echo "${txtgrn}No missing fixes found!${txtrst}"
	rm "${MBOX}"
else
	echo "# ${txtred}${num_commits}${txtrst} commits are in ${MBOX}"
	echo "mutt -f ${MBOX}"
fi