mirror of
https://github.com/h3xduck/TripleCross.git
synced 2025-12-21 17:23:07 +08:00
55 lines
1.5 KiB
Bash
55 lines
1.5 KiB
Bash
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#!/bin/bash
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set -eu
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source $(cd $(dirname $0) && pwd)/helpers.sh
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CWD=$(pwd)
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LIBBPF_PATH=$(pwd)
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REPO_PATH=$1
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KERNEL_ORIGIN=${KERNEL_ORIGIN:-https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git}
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KERNEL_BRANCH=${KERNEL_BRANCH:-CHECKPOINT}
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if [[ "${KERNEL_BRANCH}" = 'CHECKPOINT' ]]; then
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echo "using CHECKPOINT sha1"
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LINUX_SHA=$(cat ${LIBBPF_PATH}/CHECKPOINT-COMMIT)
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else
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echo "using ${KERNEL_BRANCH} sha1"
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LINUX_SHA=$(git ls-remote ${KERNEL_ORIGIN} ${KERNEL_BRANCH} | awk '{print $1}')
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fi
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SNAPSHOT_URL=${KERNEL_ORIGIN}/snapshot/bpf-next-${LINUX_SHA}.tar.gz
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echo REPO_PATH = ${REPO_PATH}
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echo KERNEL_ORIGIN = ${KERNEL_ORIGIN}
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echo LINUX_SHA = ${LINUX_SHA}
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echo SNAPSHOT_URL = ${SNAPSHOT_URL}
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if [ ! -d "${REPO_PATH}" ]; then
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echo
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travis_fold start pull_kernel_srcs "Fetching kernel sources"
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mkdir -p $(dirname "${REPO_PATH}")
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cd $(dirname "${REPO_PATH}")
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# attempt to fetch desired bpf-next repo snapshot
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if wget -nv ${SNAPSHOT_URL} && tar xf bpf-next-${LINUX_SHA}.tar.gz --totals ; then
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mv bpf-next-${LINUX_SHA} $(basename ${REPO_PATH})
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else
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# but fallback to git fetch approach if that fails
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mkdir -p $(basename ${REPO_PATH})
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cd $(basename ${REPO_PATH})
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git init
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git remote add bpf-next ${KERNEL_ORIGIN}
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# try shallow clone first
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git fetch --depth 32 bpf-next
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# check if desired SHA exists
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if ! git cat-file -e ${LINUX_SHA}^{commit} ; then
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# if not, fetch all of bpf-next; slow and painful
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git fetch bpf-next
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fi
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git reset --hard ${LINUX_SHA}
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fi
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travis_fold end pull_kernel_srcs
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fi
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