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out-of-tree/kernel_linux.go

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// Copyright 2023 Mikhail Klementev. All rights reserved.
// Use of this source code is governed by a AGPLv3 license
// (or later) that can be found in the LICENSE file.
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//go:build linux
// +build linux
package main
import (
"io/ioutil"
"os/exec"
"strings"
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"github.com/rs/zerolog/log"
"github.com/zcalusic/sysinfo"
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"code.dumpstack.io/tools/out-of-tree/config"
)
func genHostKernels(download bool) (kcfg config.KernelConfig, err error) {
si := sysinfo.SysInfo{}
si.GetSysInfo()
distroType, err := config.NewDistroType(si.OS.Vendor)
if err != nil {
return
}
cmd := exec.Command("ls", "/lib/modules")
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log.Debug().Msgf("%v", cmd)
rawOutput, err := cmd.CombinedOutput()
if err != nil {
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log.Print(string(rawOutput), err)
return
}
kernelsBase := "/boot/"
files, err := ioutil.ReadDir(kernelsBase)
if err != nil {
return
}
// only for compatibility, docker is not really used
dii := dockerImageInfo{
ContainerName: config.KernelMask{
DistroType: distroType,
DistroRelease: si.OS.Version,
}.DockerName(),
}
rootfs, err := genRootfsImage(dii, download)
if err != nil {
return
}
for _, k := range strings.Fields(string(rawOutput)) {
ki := config.KernelInfo{
DistroType: distroType,
DistroRelease: si.OS.Version,
KernelRelease: k,
KernelSource: "/lib/modules/" + k + "/build",
KernelPath: kernelsBase + genKernelPath(files, k),
InitrdPath: kernelsBase + genInitrdPath(files, k),
RootFS: rootfs,
}
vmlinux := "/usr/lib/debug/boot/vmlinux-" + k
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log.Print("vmlinux", vmlinux)
if exists(vmlinux) {
ki.VmlinuxPath = vmlinux
}
kcfg.Kernels = append(kcfg.Kernels, ki)
}
return
}