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out-of-tree/kernel/kernel_linux.go
2024-05-23 11:22:13 +00:00

99 lines
2.0 KiB
Go

// 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.
//go:build linux
// +build linux
package kernel
import (
"os"
"os/exec"
"strings"
"github.com/rs/zerolog/log"
"github.com/zcalusic/sysinfo"
"code.dumpstack.io/tools/out-of-tree/container"
"code.dumpstack.io/tools/out-of-tree/distro"
"code.dumpstack.io/tools/out-of-tree/fs"
)
func GenHostKernels(download bool) (kernels []distro.KernelInfo, err error) {
si := sysinfo.SysInfo{}
si.GetSysInfo()
distroType, err := distro.NewID(si.OS.Vendor)
if err != nil {
return
}
cmd := exec.Command("ls", "/lib/modules")
log.Debug().Msgf("%v", cmd)
rawOutput, err := cmd.CombinedOutput()
if err != nil {
log.Error().Err(err).Msg(string(rawOutput))
return
}
kernelsBase := "/boot/"
bootfiles, err := os.ReadDir(kernelsBase)
if err != nil {
return
}
dist := distro.Distro{
ID: distroType,
Release: si.OS.Version,
}
rootfs, err := GenRootfsImage(dist.RootFS(), download)
if err != nil {
return
}
for _, krel := range strings.Fields(string(rawOutput)) {
log.Debug().Msgf("generate config entry for %s", krel)
var kernelFile, initrdFile string
kernelFile, err = container.FindKernel(bootfiles, krel)
if err != nil {
log.Warn().Msgf("cannot find kernel %s", krel)
continue
}
initrdFile, err = container.FindInitrd(bootfiles, krel)
if err != nil {
log.Warn().Msgf("cannot find initrd %s", krel)
continue
}
ki := distro.KernelInfo{
Distro: distro.Distro{
ID: distroType,
Release: si.OS.Version,
},
KernelRelease: krel,
KernelSource: "/lib/modules/" + krel + "/build",
KernelPath: kernelsBase + kernelFile,
InitrdPath: kernelsBase + initrdFile,
RootFS: rootfs,
}
vmlinux := "/usr/lib/debug/boot/vmlinux-" + krel
log.Info().Msgf("vmlinux %s", vmlinux)
if fs.PathExists(vmlinux) {
ki.VmlinuxPath = vmlinux
}
kernels = append(kernels, ki)
}
return
}