8f21d54243
- Remove kernel imports and kmods images - Repurpose KernelOverride as container path - Support Kernel.Version as version prefix for kernel selection - Compare initramfs by version Signed-off-by: Jonathon Anderson <janderson@ciq.com>
88 lines
2.0 KiB
Go
88 lines
2.0 KiB
Go
package container
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import (
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"path/filepath"
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"regexp"
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"strings"
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"github.com/hashicorp/go-version"
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"github.com/warewulf/warewulf/internal/pkg/wwlog"
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)
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var (
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initramfsSearchPaths = []string{
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"/boot/initramfs-*",
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"/boot/initrd-*",
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}
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versionPattern *regexp.Regexp
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)
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func init() {
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versionPattern = regexp.MustCompile(`\d+\.\d+\.\d+(-[\d\.]+|)`)
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}
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type Initramfs struct {
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Path string
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ContainerName string
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}
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func (this *Initramfs) version() *version.Version {
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matches := versionPattern.FindAllString(this.Path, -1)
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for i := len(matches) - 1; i >= 0; i-- {
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if version_, err := version.NewVersion(strings.TrimSuffix(matches[i], ".")); err == nil {
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return version_
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}
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}
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return nil
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}
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func (this *Initramfs) Version() string {
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version := this.version()
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if version == nil {
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return ""
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} else {
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return version.String()
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}
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}
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func (this *Initramfs) FullPath() string {
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root := RootFsDir(this.ContainerName)
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return filepath.Join(root, this.Path)
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}
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func FindInitramfsFromPattern(containerName string, version string, pattern string) (initramfs *Initramfs) {
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wwlog.Debug("FindInitramfsFromPattern(%v, %v, %v)", containerName, version, pattern)
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root := RootFsDir(containerName)
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fullPaths, err := filepath.Glob(filepath.Join(root, pattern))
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wwlog.Debug("%v: fullPaths: %v", filepath.Join(root, pattern), fullPaths)
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if err != nil {
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panic(err)
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}
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for _, fullPath := range fullPaths {
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path, err := filepath.Rel(root, fullPath)
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if err != nil {
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continue
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} else {
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initramfs := &Initramfs{Path: filepath.Join("/", path), ContainerName: containerName}
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wwlog.Info("%v", initramfs)
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if strings.HasPrefix(initramfs.Version(), version) {
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return initramfs
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}
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}
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}
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return nil
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}
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// FindInitramfs returns the Initramfs for a given container and (kernel) version
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func FindInitramfs(containerName string, version string) *Initramfs {
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for _, pattern := range initramfsSearchPaths {
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initramfs := FindInitramfsFromPattern(containerName, version, pattern)
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if initramfs != nil {
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return initramfs
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}
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}
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return nil
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}
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