mirror of
https://github.com/netdata/libbpf.git
synced 2026-03-23 09:49:07 +08:00
libbpf: Add VMTEST to CI
Extend continuous integration tests by adding testing against various kernel versions. The code is based on vmtest CI scripts implemented by osandov@ for drgn [1] with the following modifications: - The downloadables are stored in Amazon S3 cloud indexed in [2] - `--setup-cmd` command line option is added to vmtest/run.sh so setup commands run on VM boot can be set in e.g. `.travis.yml` - Travis build matrix [2] is introduced for VM tests so VM tests are followed by the existing CI tests. The matrix has `KERNEL` and `VMTEST_SETUPCMD` dimensions. - Minor style fixes. The vmtest extention code is located in travis-ci/vmtest and contains `run.sh` and `setup_example.sh` - `run.sh` is responsible for the vmtest workflow: downloading vmlinux and rootfs image from the cloud, fs mounting, syncing libbpf sources to the image, setting up scripts run on VM boot, starting VM using QEMU. `run.sh` covers more use cases than a script for a job run in TravisCI, e.g. int can build a kernel w/ `--build` option. - `setup_example.sh` is an example of a script run in VM which can be modified to e.g. run actual libbpf tests. A setup script should have executable permission. To set up a new kernel version for a test: 1) upload vmlinuz.* and vmlinux.*\.zst to Amazon S3 store located at [4]; 2) modify INDEX [2] file. [1] https://github.com/osandov/drgn [2] https://libbpf-vmtest.s3-us-west-1.amazonaws.com/x86_64/INDEX [3] https://docs.travis-ci.com/user/build-matrix [4] https://libbpf-vmtest.s3-us-west-1.amazonaws.com/
This commit is contained in:
hex
4ast
35
.travis.yml
35
.travis.yml
@@ -1,13 +1,37 @@
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sudo: required
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language: bash
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dist: bionic
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services:
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- docker
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env:
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global:
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- PROJECT_NAME='libbpf'
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- AUTHOR_EMAIL="$(git log -1 --pretty=\"%aE\")"
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- CI_MANAGERS="$TRAVIS_BUILD_DIR/travis-ci/managers"
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- VMTEST_DIR="$TRAVIS_BUILD_DIR/travis-ci/vmtest"
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- REPO_ROOT="$TRAVIS_BUILD_DIR"
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# Default setup command run on VM boot.
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- VMTEST_SETUPCMD='echo 42'
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jobs:
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# Setup command override.
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- KERNEL=5.4 VMTEST_SETUPCMD="PROJECT_NAME=${PROJECT_NAME} ./${PROJECT_NAME}/travis-ci/vmtest/setup_example.sh"
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- KERNEL=5.3
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- KERNEL=4.19.88
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addons:
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apt:
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packages:
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- qemu-kvm
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- zstd
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install: sudo adduser "${USER}" kvm
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before_script:
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# Escape whitespace characters.
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- setup_cmd=$(sed 's/\([[:space:]]\)/\\\1/g' <<< "${VMTEST_SETUPCMD}")
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- sudo -E sudo -E -u "${USER}" "${VMTEST_DIR}/run.sh" -k "${KERNEL}"'*' -o -d ~ -s "${setup_cmd}" ~/root.img; exitstatus=$?
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- test $exitstatus -le 1
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script:
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- test $exitstatus -eq 0
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stages:
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# Run Coverity periodically instead of for each PR for following reasons:
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@@ -27,11 +51,13 @@ jobs:
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env:
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- DEBIAN_RELEASE="testing"
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- CONT_NAME="libbpf-debian-$DEBIAN_RELEASE"
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# Override before_install: so VMTEST before_install commands are not executed.
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before_install:
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- sudo apt-get -y -o Dpkg::Options::="--force-confnew" install docker-ce
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- docker --version
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install:
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- $CI_MANAGERS/debian.sh SETUP
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before_script:
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script:
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- $CI_MANAGERS/debian.sh RUN || travis_terminate
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after_script:
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@@ -47,6 +73,7 @@ jobs:
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- docker --version
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install:
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- $CI_MANAGERS/debian.sh SETUP
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before_script:
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script:
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- $CI_MANAGERS/debian.sh RUN_ASAN || travis_terminate
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after_script:
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@@ -62,6 +89,7 @@ jobs:
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- docker --version
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install:
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- $CI_MANAGERS/debian.sh SETUP
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before_script:
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script:
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- $CI_MANAGERS/debian.sh RUN_CLANG || travis_terminate
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after_script:
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@@ -77,6 +105,7 @@ jobs:
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- docker --version
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install:
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- $CI_MANAGERS/debian.sh SETUP
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before_script:
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script:
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- $CI_MANAGERS/debian.sh RUN_CLANG_ASAN || travis_terminate
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after_script:
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@@ -92,6 +121,7 @@ jobs:
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- docker --version
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install:
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- $CI_MANAGERS/debian.sh SETUP
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before_script:
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script:
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- $CI_MANAGERS/debian.sh RUN_GCC8 || travis_terminate
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after_script:
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@@ -107,6 +137,7 @@ jobs:
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- docker --version
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install:
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- $CI_MANAGERS/debian.sh SETUP
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before_script:
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script:
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- $CI_MANAGERS/debian.sh RUN_GCC8_ASAN || travis_terminate
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after_script:
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@@ -114,24 +145,28 @@ jobs:
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- name: Ubuntu Bionic
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language: bash
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before_script:
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script:
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- sudo $CI_MANAGERS/ubuntu.sh || travis_terminate
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- name: Ubuntu Bionic (arm)
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arch: arm64
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language: bash
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before_script:
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script:
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- sudo $CI_MANAGERS/ubuntu.sh || travis_terminate
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- name: Ubuntu Bionic (s390x)
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arch: s390x
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language: bash
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before_script:
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script:
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- sudo $CI_MANAGERS/ubuntu.sh || travis_terminate
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- name: Ubuntu Bionic (ppc64le)
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arch: ppc64le
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language: bash
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before_script:
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script:
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- sudo $CI_MANAGERS/ubuntu.sh || travis_terminate
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430
travis-ci/vmtest/run.sh
Executable file
430
travis-ci/vmtest/run.sh
Executable file
@@ -0,0 +1,430 @@
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#!/bin/bash
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set -uo pipefail
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trap 'exit 2' ERR
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usage () {
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USAGE_STRING="usage: $0 [-k KERNELRELEASE|-b DIR] [[-r ROOTFSVERSION] [-fo]|-I] [-Si] [-d DIR] IMG
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$0 [-k KERNELRELEASE] -l
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$0 -h
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Run "${PROJECT_NAME}" tests in a virtual machine.
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This exits with status 0 on success, 1 if the virtual machine ran successfully
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but tests failed, and 2 if we encountered a fatal error.
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This script uses sudo to mount and modify the disk image.
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Arguments:
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IMG path of virtual machine disk image to create
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Versions:
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-k, --kernel=KERNELRELEASE
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kernel release to test. This is a glob pattern; the
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newest (sorted by version number) release that matches
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the pattern is used (default: newest available release)
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-b, --build DIR use the kernel built in the given directory. This option
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cannot be combined with -k
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-r, --rootfs=ROOTFSVERSION
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version of root filesystem to use (default: newest
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available version)
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Setup:
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-f, --force overwrite IMG if it already exists
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-o, --one-shot one-shot mode. By default, this script saves a clean copy
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of the downloaded root filesystem image and vmlinux and
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makes a copy (reflinked, when possible) for executing the
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virtual machine. This allows subsequent runs to skip
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downloading these files. If this option is given, the
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root filesystem image and vmlinux are always
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re-downloaded and are not saved. This option implies -f
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-s, --setup-cmd setup commands run on VM boot. Whitespace characters
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should be escaped with preceding '\'.
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-I, --skip-image skip creating the disk image; use the existing one at
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IMG. This option cannot be combined with -r, -f, or -o
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-S, --skip-source skip copying the source files and init scripts
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Miscellaneous:
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-i, --interactive interactive mode. Boot the virtual machine into an
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interactive shell instead of automatically running tests
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-d, --dir=DIR working directory to use for downloading and caching
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files (default: current working directory)
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-l, --list list available kernel releases instead of running tests.
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The list may be filtered with -k
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-h, --help display this help message and exit"
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case "$1" in
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out)
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echo "$USAGE_STRING"
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exit 0
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;;
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err)
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echo "$USAGE_STRING" >&2
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exit 2
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;;
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esac
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}
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TEMP=$(getopt -o 'k:b:r:fos:ISid:lh' --long 'kernel:,build:,rootfs:,force,one-shot,setup-cmd,skip-image,skip-source:,interactive,dir:,list,help' -n "$0" -- "$@")
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eval set -- "$TEMP"
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unset TEMP
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unset KERNELRELEASE
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unset BUILDDIR
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unset ROOTFSVERSION
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unset IMG
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unset SETUPCMD
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FORCE=0
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ONESHOT=0
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SKIPIMG=0
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SKIPSOURCE=0
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APPEND=""
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DIR="$PWD"
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LIST=0
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while true; do
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case "$1" in
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-k|--kernel)
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KERNELRELEASE="$2"
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shift 2
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;;
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-b|--build)
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BUILDDIR="$2"
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shift 2
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;;
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-r|--rootfs)
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ROOTFSVERSION="$2"
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shift 2
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;;
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-f|--force)
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FORCE=1
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shift
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;;
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-o|--one-shot)
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ONESHOT=1
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FORCE=1
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shift
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;;
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-s|--setup-cmd)
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SETUPCMD="$2"
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shift 2
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;;
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-I|--skip-image)
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SKIPIMG=1
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shift
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;;
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-S|--skip-source)
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SKIPSOURCE=1
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shift
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;;
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-i|--interactive)
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APPEND=" single"
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shift
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;;
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-d|--dir)
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DIR="$2"
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shift 2
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;;
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-l|--list)
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LIST=1
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;;
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-h|--help)
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usage out
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;;
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--)
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shift
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break
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;;
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*)
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usage err
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;;
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esac
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done
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if [[ -v BUILDDIR ]]; then
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if [[ -v KERNELRELEASE ]]; then
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usage err
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fi
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elif [[ ! -v KERNELRELEASE ]]; then
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KERNELRELEASE='*'
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fi
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if [[ $SKIPIMG -ne 0 && ( -v ROOTFSVERSION || $FORCE -ne 0 ) ]]; then
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usage err
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fi
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if (( LIST )); then
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if [[ $# -ne 0 || -v BUILDDIR || -v ROOTFSVERSION || $FORCE -ne 0 ||
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$SKIPIMG -ne 0 || $SKIPSOURCE -ne 0 || -n $APPEND ]]; then
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usage err
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fi
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else
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if [[ $# -ne 1 ]]; then
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usage err
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fi
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IMG="${!OPTIND}"
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fi
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unset URLS
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cache_urls() {
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if ! declare -p URLS &> /dev/null; then
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# This URL contains a mapping from file names to URLs where
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# those files can be downloaded.
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local INDEX='https://libbpf-vmtest.s3-us-west-1.amazonaws.com/x86_64/INDEX'
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declare -gA URLS
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while IFS=$'\t' read -r name url; do
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URLS["$name"]="$url"
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done < <(curl -LfsS "$INDEX")
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fi
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}
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matching_kernel_releases() {
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local pattern="$1"
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{
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for file in "${!URLS[@]}"; do
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if [[ $file =~ ^vmlinux-(.*).zst$ ]]; then
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release="${BASH_REMATCH[1]}"
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case "$release" in
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$pattern)
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# sort -V handles rc versions properly
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# if we use "~" instead of "-".
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echo "${release//-rc/~rc}"
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;;
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esac
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fi
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done
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} | sort -rV | sed 's/~rc/-rc/g'
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}
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newest_rootfs_version() {
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{
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for file in "${!URLS[@]}"; do
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if [[ $file =~ ^${PROJECT_NAME}-vmtest-rootfs-(.*)\.tar\.zst$ ]]; then
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echo "${BASH_REMATCH[1]}"
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fi
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done
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} | sort -rV | head -1
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}
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download() {
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local file="$1"
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cache_urls
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if [[ ! -v URLS[$file] ]]; then
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echo "$file not found" >&2
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return 1
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fi
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echo "Downloading $file..." >&2
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curl -Lf "${URLS[$file]}" "${@:2}"
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}
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set_nocow() {
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touch "$@"
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chattr +C "$@" >/dev/null 2>&1 || true
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}
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cp_img() {
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set_nocow "$2"
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cp --reflink=auto "$1" "$2"
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}
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create_rootfs_img() {
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local path="$1"
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set_nocow "$path"
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truncate -s 2G "$path"
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mkfs.ext4 -q "$path"
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}
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download_rootfs() {
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local rootfsversion="$1"
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local dir="$2"
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download "${PROJECT_NAME}-vmtest-rootfs-$rootfsversion.tar.zst" |
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zstd -d | sudo tar -C "$dir" -x
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}
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if (( LIST )); then
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cache_urls
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matching_kernel_releases "$KERNELRELEASE"
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exit 0
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fi
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if [[ $FORCE -eq 0 && $SKIPIMG -eq 0 && -e $IMG ]]; then
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echo "$IMG already exists; use -f to overwrite it or -I to reuse it" >&2
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exit 1
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fi
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# Only go to the network if it's actually a glob pattern.
|
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if [[ -v BUILDDIR ]]; then
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KERNELRELEASE="$(make -C "$BUILDDIR" -s kernelrelease)"
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elif [[ ! $KERNELRELEASE =~ ^([^\\*?[]|\\[*?[])*\\?$ ]]; then
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# We need to cache the list of URLs outside of the command
|
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# substitution, which happens in a subshell.
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cache_urls
|
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KERNELRELEASE="$(matching_kernel_releases "$KERNELRELEASE" | head -1)"
|
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if [[ -z $KERNELRELEASE ]]; then
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echo "No matching kernel release found" >&2
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exit 1
|
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fi
|
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fi
|
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if [[ $SKIPIMG -eq 0 && ! -v ROOTFSVERSION ]]; then
|
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cache_urls
|
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ROOTFSVERSION="$(newest_rootfs_version)"
|
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fi
|
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|
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echo "Kernel release: $KERNELRELEASE" >&2
|
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if (( SKIPIMG )); then
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echo "Not extracting root filesystem" >&2
|
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else
|
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echo "Root filesystem version: $ROOTFSVERSION" >&2
|
||||
fi
|
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echo "Disk image: $IMG" >&2
|
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|
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tmp=
|
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ARCH_DIR="$DIR/x86_64"
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mkdir -p "$ARCH_DIR"
|
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mnt="$(mktemp -d -p "$DIR" mnt.XXXXXXXXXX)"
|
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|
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cleanup() {
|
||||
if [[ -n $tmp ]]; then
|
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rm -f "$tmp" || true
|
||||
fi
|
||||
if mountpoint -q "$mnt"; then
|
||||
sudo umount "$mnt" || true
|
||||
fi
|
||||
if [[ -d "$mnt" ]]; then
|
||||
rmdir "$mnt" || true
|
||||
fi
|
||||
}
|
||||
trap cleanup EXIT
|
||||
|
||||
if [[ -v BUILDDIR ]]; then
|
||||
vmlinuz="$BUILDDIR/$(make -C "$BUILDDIR" -s image_name)"
|
||||
else
|
||||
vmlinuz="${ARCH_DIR}/vmlinuz-${KERNELRELEASE}"
|
||||
if [[ ! -e $vmlinuz ]]; then
|
||||
tmp="$(mktemp "$vmlinuz.XXX.part")"
|
||||
download "vmlinuz-${KERNELRELEASE}" -o "$tmp"
|
||||
mv "$tmp" "$vmlinuz"
|
||||
tmp=
|
||||
fi
|
||||
fi
|
||||
|
||||
# Mount and set up the rootfs image.
|
||||
if (( ONESHOT )); then
|
||||
rm -f "$IMG"
|
||||
create_rootfs_img "$IMG"
|
||||
sudo mount -o loop "$IMG" "$mnt"
|
||||
download_rootfs "$ROOTFSVERSION" "$mnt"
|
||||
else
|
||||
if (( ! SKIPIMG )); then
|
||||
rootfs_img="${ARCH_DIR}/${PROJECT_NAME}-vmtest-rootfs-${ROOTFSVERSION}.img"
|
||||
|
||||
if [[ ! -e $rootfs_img ]]; then
|
||||
tmp="$(mktemp "$rootfs_img.XXX.part")"
|
||||
set_nocow "$tmp"
|
||||
truncate -s 2G "$tmp"
|
||||
mkfs.ext4 -q "$tmp"
|
||||
sudo mount -o loop "$tmp" "$mnt"
|
||||
|
||||
download_rootfs "$ROOTFSVERSION" "$mnt"
|
||||
|
||||
sudo umount "$mnt"
|
||||
mv "$tmp" "$rootfs_img"
|
||||
tmp=
|
||||
fi
|
||||
|
||||
rm -f "$IMG"
|
||||
cp_img "$rootfs_img" "$IMG"
|
||||
fi
|
||||
sudo mount -o loop "$IMG" "$mnt"
|
||||
fi
|
||||
|
||||
# Install vmlinux.
|
||||
vmlinux="$mnt/boot/vmlinux-${KERNELRELEASE}"
|
||||
if [[ -v BUILDDIR || $ONESHOT -eq 0 ]]; then
|
||||
if [[ -v BUILDDIR ]]; then
|
||||
source_vmlinux="${BUILDDIR}/vmlinux"
|
||||
else
|
||||
source_vmlinux="${ARCH_DIR}/vmlinux-${KERNELRELEASE}"
|
||||
if [[ ! -e $source_vmlinux ]]; then
|
||||
tmp="$(mktemp "$source_vmlinux.XXX.part")"
|
||||
download "vmlinux-${KERNELRELEASE}.zst" | zstd -dfo "$tmp"
|
||||
mv "$tmp" "$source_vmlinux"
|
||||
tmp=
|
||||
fi
|
||||
fi
|
||||
echo "Copying vmlinux..." >&2
|
||||
sudo rsync -cp --chmod 0644 "$source_vmlinux" "$vmlinux"
|
||||
else
|
||||
# We could use "sudo zstd -o", but let's not run zstd as root with
|
||||
# input from the internet.
|
||||
download "vmlinux-${KERNELRELEASE}.zst" |
|
||||
zstd -d | sudo tee "$vmlinux" > /dev/null
|
||||
sudo chmod 644 "$vmlinux"
|
||||
fi
|
||||
|
||||
if (( SKIPSOURCE )); then
|
||||
echo "Not copying source files..." >&2
|
||||
else
|
||||
echo "Copying source files..." >&2
|
||||
|
||||
# Copy the source files in.
|
||||
sudo mkdir -p -m 0755 "$mnt/${PROJECT_NAME}"
|
||||
{
|
||||
if [[ -e .git ]]; then
|
||||
git ls-files -z
|
||||
else
|
||||
tr '\n' '\0' < "${PROJECT_NAME}.egg-info/SOURCES.txt"
|
||||
fi
|
||||
} | sudo rsync --files-from=- -0cpt . "$mnt/${PROJECT_NAME}"
|
||||
fi
|
||||
|
||||
setup_script="#!/bin/sh
|
||||
|
||||
echo 'Skipping setup commands'
|
||||
echo 0 > /exitstatus
|
||||
chmod 644 /exitstatus"
|
||||
|
||||
# Create the init scripts.
|
||||
if [[ ! -z SETUPCMD ]]; then
|
||||
# Unescape whitespace characters.
|
||||
setup_cmd=$(sed 's/\(\\\)\([[:space:]]\)/\2/g' <<< "${SETUPCMD}")
|
||||
setup_script=$(printf "#!/bin/sh
|
||||
set -e
|
||||
|
||||
echo 'Running setup commands'
|
||||
%s
|
||||
echo $? > /exitstatus
|
||||
chmod 644 /exitstatus" "${setup_cmd}")
|
||||
fi
|
||||
|
||||
echo "${setup_script}" | sudo tee "$mnt/etc/rcS.d/S50-run-tests" > /dev/null
|
||||
sudo chmod 755 "$mnt/etc/rcS.d/S50-run-tests"
|
||||
|
||||
poweroff_script="#!/bin/sh
|
||||
|
||||
poweroff"
|
||||
echo "${poweroff_script}" | sudo tee "$mnt/etc/rcS.d/S99-poweroff" > /dev/null
|
||||
sudo chmod 755 "$mnt/etc/rcS.d/S99-poweroff"
|
||||
|
||||
sudo umount "$mnt"
|
||||
|
||||
echo "Starting virtual machine..." >&2
|
||||
qemu-system-x86_64 -nodefaults -display none -serial mon:stdio \
|
||||
-cpu kvm64 -enable-kvm -smp "$(nproc)" -m 2G \
|
||||
-drive file="$IMG",format=raw,index=1,media=disk,if=virtio,cache=none \
|
||||
-kernel "$vmlinuz" -append "root=/dev/vda rw console=ttyS0,115200$APPEND"
|
||||
|
||||
sudo mount -o loop "$IMG" "$mnt"
|
||||
if exitstatus="$(cat "$mnt/exitstatus" 2>/dev/null)"; then
|
||||
printf '\nTests exit status: %s\n' "$exitstatus" >&2
|
||||
else
|
||||
printf '\nCould not read tests exit status\n' >&2
|
||||
exitstatus=1
|
||||
fi
|
||||
sudo umount "$mnt"
|
||||
exit "$exitstatus"
|
||||
11
travis-ci/vmtest/setup_example.sh
Executable file
11
travis-ci/vmtest/setup_example.sh
Executable file
@@ -0,0 +1,11 @@
|
||||
#!/bin/sh
|
||||
|
||||
# An example of a script run on VM boot.
|
||||
# To execute it in TravisCI set VMTEST_SETUPCMD env var of .travis.yml in
|
||||
# libbpf root folder, e.g.
|
||||
# VMTEST_SETUPCMD="./${PROJECT_NAME}/travis-ci/vmtest/setup_example.sh"
|
||||
|
||||
if [ ! -z "${PROJECT_NAME}" ]; then
|
||||
echo "Running ${PROJECT_NAME} setup scripts..."
|
||||
fi
|
||||
echo "Hello, ${USER}!"
|
||||
Reference in New Issue
Block a user