build/lib/functions/compilation/kernel-git-bundle.sh

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#!/usr/bin/env bash
#
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2013-2023 Igor Pecovnik, igor@armbian.com
#
# This file is a part of the Armbian Build Framework
# https://github.com/armbian/build/
# This is NOT run under do_with_retries.
function download_git_kernel_bundle() {
# See https://mirrors.edge.kernel.org/pub/scm/.bundles/pub/scm/linux/kernel/git/
# rpardini: I'm a bit undecided about using the stable bundle (5gb) or the Linus bundle (3gb)
# the stable seems much better at the end of the day.
declare bundle_type="${bundle_type:-"stable"}" linux_clone_bundle_url=""
case "${bundle_type}" in
stable)
display_alert "Using Kernel bundle" "${bundle_type}" "debug"
linux_clone_bundle_url="https://mirrors.edge.kernel.org/pub/scm/.bundles/pub/scm/linux/kernel/git/stable/linux/clone.bundle"
;;
linus)
display_alert "Using Kernel bundle" "${bundle_type}" "debug"
linux_clone_bundle_url="https://mirrors.edge.kernel.org/pub/scm/.bundles/pub/scm/linux/kernel/git/torvalds/linux/clone.bundle"
;;
esac
declare git_bundles_dir="${SRC}/cache/git-bundles/kernel"
run_host_command_logged mkdir -pv "${git_bundles_dir}"
# defines outer scope value
linux_kernel_clone_bundle_file="${git_bundles_dir}/linux-${bundle_type}.bundle"
declare linux_kernel_clone_bundle_file_tmp="${linux_kernel_clone_bundle_file}.tmp"
# if the file already exists, do nothing
if [[ -f "${linux_kernel_clone_bundle_file}" ]]; then
display_alert "Kernel bundle already exists" "${bundle_type}" "cachehit"
return 0
fi
# download into the tmp_file until it works, then rename to final; use axel.
do_with_retries 5 kernel_download_bundle_with_axel
# move into place, only if everything worked, retried or not.
run_host_command_logged mv -v "${linux_kernel_clone_bundle_file_tmp}" "${linux_kernel_clone_bundle_file}"
return 0
}
function kernel_download_bundle_with_axel() {
display_alert "Downloading Kernel bundle" "${bundle_type}; this might take a long time" "info"
declare -a verbose_params=()
if_user_on_terminal_and_not_logging_add verbose_params "--verbose" "--alternate"
if_user_not_on_terminal_or_is_logging_add verbose_params "--quiet"
run_host_command_logged axel "${verbose_params[@]}" "--output=${linux_kernel_clone_bundle_file_tmp}" \
"${linux_clone_bundle_url}"
}
function kernel_prepare_bare_repo_from_bundle() {
kernel_git_bare_tree="${SRC}/cache/git-bare/kernel" # sets the outer scope variable
declare kernel_git_bare_tree_done_marker="${kernel_git_bare_tree}/.git/armbian-bare-tree-done"
if [[ ! -d "${kernel_git_bare_tree}" || ! -f "${kernel_git_bare_tree_done_marker}" ]]; then
if [[ -d "${kernel_git_bare_tree}" ]]; then
display_alert "Removing old kernel bare tree" "${kernel_git_bare_tree}" "info"
rm -rf "${kernel_git_bare_tree}"
fi
# now, make sure we've the bundle downloaded correctly...
# this defines linux_kernel_clone_bundle_file
declare linux_kernel_clone_bundle_file
download_git_kernel_bundle
# fetch it, completely, into the bare tree; use clone, not fetch.
display_alert "Cloning from bundle into bare tree" "this might take a very long time" "info"
declare -a verbose_params=() && if_user_on_terminal_and_not_logging_add verbose_params "--verbose" "--progress"
run_host_command_logged git clone "${verbose_params[@]}" --tags --no-checkout \
"${linux_kernel_clone_bundle_file}" "${kernel_git_bare_tree}"
# write the marker file
touch "${kernel_git_bare_tree_done_marker}"
fi
return 0
}