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Merge pull request #229 from kairos-io/2226-detect-boot-state
2226 detect boot state
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| package uki | ||
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| import ( | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "strings" | ||
|
|
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| v1 "github.com/kairos-io/kairos-agent/v2/pkg/types/v1" | ||
| fsutils "github.com/kairos-io/kairos-agent/v2/pkg/utils/fs" | ||
| sdkutils "github.com/kairos-io/kairos-sdk/utils" | ||
| "github.com/sanity-io/litter" | ||
| ) | ||
|
|
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| const UnassignedArtifactRole = "norole" | ||
|
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| // overwriteArtifactSetRole first deletes all artifacts prefixed with newRole | ||
| // (because they are going to be replaced, e.g. old "passive") and then installs | ||
| // the artifacts prefixed with oldRole as newRole. | ||
| // E.g. removes "passive" and moved "active" to "passive" | ||
| // This is a step that should happen before a new passive is installed on upgrades. | ||
| func overwriteArtifactSetRole(fs v1.FS, dir, oldRole, newRole string, logger v1.Logger) error { | ||
| if err := removeArtifactSetWithRole(fs, dir, newRole); err != nil { | ||
| return fmt.Errorf("deleting role %s: %w", newRole, err) | ||
| } | ||
|
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| if err := copyArtifactSetRole(fs, dir, oldRole, newRole, logger); err != nil { | ||
| return fmt.Errorf("copying artifact set role from %s to %s: %w", oldRole, newRole, err) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| // copy the source file but rename the base name to as | ||
| func copyArtifact(source, oldRole, newRole string) (string, error) { | ||
| newName := strings.ReplaceAll(source, oldRole, newRole) | ||
| return newName, copyFile(source, newName) | ||
| } | ||
|
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| func removeArtifactSetWithRole(fs v1.FS, artifactDir, role string) error { | ||
| return fsutils.WalkDirFs(fs, artifactDir, func(path string, info os.DirEntry, err error) error { | ||
| if !info.IsDir() && strings.HasPrefix(info.Name(), role) { | ||
| return os.Remove(path) | ||
| } | ||
|
|
||
| return nil | ||
| }) | ||
| } | ||
|
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| func copyArtifactSetRole(fs v1.FS, artifactDir, oldRole, newRole string, logger v1.Logger) error { | ||
| return fsutils.WalkDirFs(fs, artifactDir, func(path string, info os.DirEntry, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if !strings.HasPrefix(info.Name(), oldRole) { | ||
| return nil | ||
| } | ||
|
|
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| newPath, err := copyArtifact(path, oldRole, newRole) | ||
| if err != nil { | ||
| return fmt.Errorf("copying artifact from %s to %s: %w", path, newPath, err) | ||
| } | ||
| if strings.HasSuffix(path, ".conf") { | ||
| if err := replaceRoleInKey(newPath, "efi", oldRole, newRole, logger); err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| }) | ||
| } | ||
|
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| func replaceRoleInKey(path, key, oldRole, newRole string, logger v1.Logger) (err error) { | ||
| // Extract the values | ||
| conf, err := sdkutils.SystemdBootConfReader(path) | ||
| if err != nil { | ||
| logger.Errorf("Error reading conf file %s: %s", path, err) | ||
| return err | ||
| } | ||
| logger.Debugf("Conf file %s has values %v", path, litter.Sdump(conf)) | ||
|
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| _, hasKey := conf[key] | ||
| if !hasKey { | ||
| return fmt.Errorf("no %s entry in .conf file", key) | ||
| } | ||
|
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| conf[key] = strings.ReplaceAll(conf[key], oldRole, newRole) | ||
| newContents := "" | ||
| for k, v := range conf { | ||
| newContents = fmt.Sprintf("%s%s %s\n", newContents, k, v) | ||
| } | ||
| logger.Debugf("Conf file %s new values %v", path, litter.Sdump(conf)) | ||
|
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| return os.WriteFile(path, []byte(newContents), os.ModePerm) | ||
| } | ||
|
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| func copyFile(src, dst string) error { | ||
| sourceFile, err := os.Open(src) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| defer sourceFile.Close() | ||
|
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| destinationFile, err := os.Create(dst) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| defer destinationFile.Close() | ||
|
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| if _, err = io.Copy(destinationFile, sourceFile); err != nil { | ||
| return err | ||
| } | ||
|
|
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| // Flushes any buffered data to the destination file | ||
| if err = destinationFile.Sync(); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err = sourceFile.Close(); err != nil { | ||
| return err | ||
| } | ||
|
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| return destinationFile.Close() | ||
| } |
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