74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
package container
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import (
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"fmt"
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"path"
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"path/filepath"
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"sort"
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"github.com/hpcng/warewulf/internal/pkg/util"
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"github.com/hpcng/warewulf/internal/pkg/wwlog"
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)
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var (
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kernelSearchPaths = []string{
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// This is a printf format where the %s will be the kernel version
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`/boot/vmlinuz-%s`,
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`/boot/vmlinuz-%s.gz`,
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`/lib/modules/%s/vmlinuz`,
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`/lib/modules/%s/vmlinuz.gz`,
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}
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)
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func KernelFind(container string) string {
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container_path := RootFsDir(container)
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if container_path == "" {
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return ""
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}
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kernelVersion := KernelVersion(container)
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if kernelVersion == "" {
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return ""
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}
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for _, searchPath := range kernelSearchPaths {
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testPath := fmt.Sprintf(searchPath, kernelVersion)
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wwlog.Printf(wwlog.VERBOSE, "Looking for kernel at: '%s'\n", testPath)
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if util.IsFile(path.Join(container_path, testPath)) {
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return path.Join(container_path, testPath)
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}
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}
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return ""
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}
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func KernelVersion(container string) string {
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container_path := RootFsDir(container)
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if container_path == "" {
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return ""
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}
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module_lib_path := path.Join(container_path, "/lib/modules/*")
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wwlog.Printf(wwlog.DEBUG, "Searching for kernel modules at: %s\n", module_lib_path)
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kernelversions, err := filepath.Glob(module_lib_path)
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if err != nil {
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return ""
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}
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if len(kernelversions) > 1 {
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sort.Slice(kernelversions, func(i, j int) bool {
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return kernelversions[i] > kernelversions[j]
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})
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wwlog.Printf(wwlog.VERBOSE, "Multiple kernels found in container: %s\n", container)
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wwlog.Printf(wwlog.DEBUG, "Found lib path: '%s'\n", kernelversions[0])
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return path.Base(kernelversions[0])
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} else if len(kernelversions) == 1 {
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wwlog.Printf(wwlog.DEBUG, "Found lib path: '%s'\n", kernelversions[0])
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return path.Base(kernelversions[0])
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}
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return ""
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}
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