110 lines
2.8 KiB
Go
110 lines
2.8 KiB
Go
package kernel
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/hpcng/warewulf/internal/pkg/config"
|
|
"github.com/hpcng/warewulf/internal/pkg/errors"
|
|
"github.com/hpcng/warewulf/internal/pkg/util"
|
|
"github.com/hpcng/warewulf/internal/pkg/wwlog"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
"path"
|
|
)
|
|
|
|
func ParentDir() string {
|
|
return path.Join(config.LocalStateDir, "provision/kernel")
|
|
}
|
|
|
|
func KernelImage(kernelVersion string) string {
|
|
if kernelVersion == "" {
|
|
wwlog.Printf(wwlog.ERROR, "Kernel Version is not defined\n")
|
|
return ""
|
|
}
|
|
|
|
if util.ValidString(kernelVersion, "^[a-zA-Z0-9-._]+$") == false {
|
|
wwlog.Printf(wwlog.ERROR, "Runtime overlay name contains illegal characters: %s\n", kernelVersion)
|
|
return ""
|
|
}
|
|
|
|
return path.Join(ParentDir(), kernelVersion, "vmlinuz")
|
|
}
|
|
|
|
func KmodsImage(kernelVersion string) string {
|
|
if kernelVersion == "" {
|
|
wwlog.Printf(wwlog.ERROR, "Kernel Version is not defined\n")
|
|
return ""
|
|
}
|
|
|
|
if util.ValidString(kernelVersion, "^[a-zA-Z0-9-._]+$") == false {
|
|
wwlog.Printf(wwlog.ERROR, "Runtime overlay name contains illegal characters: %s\n", kernelVersion)
|
|
return ""
|
|
}
|
|
|
|
return path.Join(ParentDir(), kernelVersion, "kmods.img")
|
|
}
|
|
|
|
func ListKernels() ([]string, error) {
|
|
var ret []string
|
|
|
|
err := os.MkdirAll(ParentDir(), 0755)
|
|
if err != nil {
|
|
return ret, errors.New("Could not create Kernel parent directory: " + ParentDir())
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Searching for Kernel image directories: %s\n", ParentDir())
|
|
|
|
kernels, err := ioutil.ReadDir(ParentDir())
|
|
if err != nil {
|
|
return ret, err
|
|
}
|
|
|
|
for _, kernel := range kernels {
|
|
wwlog.Printf(wwlog.VERBOSE, "Found Kernel: %s\n", kernel.Name())
|
|
|
|
ret = append(ret, kernel.Name())
|
|
|
|
}
|
|
|
|
return ret, nil
|
|
}
|
|
|
|
func Build(kernelVersion string) (string, error) {
|
|
|
|
kernelImage := "/boot/vmlinuz-" + kernelVersion
|
|
kernelDrivers := "/lib/modules/" + kernelVersion
|
|
kernelDestination := KernelImage(kernelVersion)
|
|
driversDestination := KmodsImage(kernelVersion)
|
|
|
|
// Create the destination paths just in case it doesn't exist
|
|
os.MkdirAll(path.Dir(kernelDestination), 0755)
|
|
os.MkdirAll(path.Dir(driversDestination), 0755)
|
|
|
|
if util.IsFile(kernelImage) == false {
|
|
return "", errors.New("Could not locate kernel image")
|
|
}
|
|
|
|
if util.IsDir(kernelDrivers) == false {
|
|
return "", errors.New("Could not locate kernel drivers")
|
|
}
|
|
|
|
wwlog.Printf(wwlog.VERBOSE, "Setting up Kernel\n")
|
|
if _, err := os.Stat(kernelImage); err == nil {
|
|
err := util.CopyFile(kernelImage, kernelDestination)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
|
|
wwlog.Printf(wwlog.VERBOSE, "Building Kernel driver image\n")
|
|
if _, err := os.Stat(kernelDrivers); err == nil {
|
|
cmd := fmt.Sprintf("cd /; find .%s | cpio --quiet -o -H newc -F \"%s\"", kernelDrivers, driversDestination)
|
|
err := exec.Command("/bin/sh", "-c", cmd).Run()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
|
|
return "Done", nil
|
|
}
|