core

{
	err := c.CheckCompatibilityFS()
	if err != nil {
		return err
	}

	err = c.CheckConnectivity()
	if err != nil {
		return err
	}

	err = c.CheckRoot()
	if err != nil {
		return err
	}

	return nil
}

{
	PrintVerboseInfo("Checks.CheckCompatibilityFS", "running...")

	var fs []string
	if runtime.GOOS == "linux" {
		fs = []string{"ext4", "btrfs", "xfs"}
	} else {
		err := fmt.Errorf("your OS (%s) is not supported", runtime.GOOS)
		PrintVerboseErr("Checks.CheckCompatibilityFS", 0, err)
		return err
	}

	cmd, err := exec.Command("findmnt", "-n", "-o", "source", "/").Output()
	if err != nil {
		PrintVerboseErr("Checks.CheckCompatibilityFS", 1, err)
		return err
	}
	device := string([]byte(cmd[:len(cmd)-1]))

	cmd, err = exec.Command("lsblk", "-o", "fstype", "-n", device).Output()
	if err != nil {
		PrintVerboseErr("Checks.CheckCompatibilityFS", 2, err)
		return err
	}
	fsType := string([]byte(cmd[:len(cmd)-1]))

	for _, f := range fs {
		if f == string(fsType) {
			PrintVerboseInfo("CheckCompatibilityFS", fsType, "is supported")
			return nil
		}
	}

	err = fmt.Errorf("the filesystem (%s) is not supported", fsType)
	PrintVerboseErr("Checks.CheckCompatibilityFS", 3, err)
	return err
}

{
	PrintVerboseInfo("Checks.CheckConnectivity", "running...")

	timeout := 5 * time.Second
	_, err := net.DialTimeout("tcp", "vanillaos.org:80", timeout)
	if err != nil {
		PrintVerboseErr("Checks.CheckConnectivity", 1, err)
		return err
	}

	return nil
}

{
	PrintVerboseInfo("Checks.CheckRoot", "running...")

	if os.Geteuid() == 0 {
		PrintVerboseInfo("Checks.CheckRoot", "you are root")
		return nil
	}

	err := errors.New("not root")
	PrintVerboseErr("Checks.CheckRoot", 1, err)
	return err
}

{
	PrintVerboseInfo("ABImage.WriteTo", "running...")

	if _, err := os.Stat(dest); os.IsNotExist(err) {
		err = os.MkdirAll(dest, 0755)
		if err != nil {
			PrintVerboseErr("ABImage.WriteTo", 0, err)
			return err
		}
	}

	if suffix != "" {
		suffix = "-" + suffix
	}
	imageName := "abimage" + suffix + ".abr"
	imagePath := filepath.Join(dest, imageName)

	abimage, err := json.Marshal(a)
	if err != nil {
		PrintVerboseErr("ABImage.WriteTo", 1, err)
		return err
	}

	err = os.WriteFile(imagePath, abimage, 0644)
	if err != nil {
		PrintVerboseErr("ABImage.WriteTo", 2, err)
		return err
	}

	PrintVerboseInfo("ABImage.WriteTo", "successfully wrote abimage.abr to "+imagePath)

	return nil
}

{
	PrintVerboseInfo("IntegrityCheck.check", "Running...")
	repairPaths := []string{}
	repairLinks := []string{}

	// check if system dir exists
	if !fileExists(ic.systemPath) {
		repairPaths = append(repairPaths, ic.systemPath)
	}

	// check if standard links exist and are links
	for _, link := range ic.standardLinks {
		testPath := filepath.Join(ic.rootPath, link)
		if !isLink(testPath) {
			repairLinks = append(repairLinks, link)
		}
	}

	// check if root paths exist
	for _, path := range ic.rootPaths {
		finalPath := filepath.Join(ic.rootPath, path)
		if !fileExists(finalPath) {
			repairPaths = append(repairPaths, finalPath)
		}
	}

	// check if etc paths exist
	for _, path := range ic.etcPaths {
		if !fileExists(path) {
			repairPaths = append(repairPaths, path)
		}
	}

	if repair {
		for _, path := range repairPaths {
			PrintVerboseInfo("IntegrityCheck", "Repairing path", path)
			err := os.MkdirAll(path, 0755)
			if err != nil {
				PrintVerboseErr("IntegrityCheck", 0, err)
				return err
			}
		}

		for _, link := range repairLinks {
			srcPath := filepath.Join(ic.systemPath, link)
			dstPath := filepath.Join(ic.rootPath, link)
			relSrcPath, err := filepath.Rel(filepath.Dir(dstPath), srcPath)
			if err != nil {
				PrintVerboseErr("IntegrityCheck", 1, err)
				return err
			}

			PrintVerboseInfo("IntegrityCheck", "Repairing link", relSrcPath, "->", dstPath)
			err = os.Symlink(relSrcPath, dstPath)
			if err != nil {
				PrintVerboseErr("IntegrityCheck", 2, err)
				return err
			}
		}
	}

	return nil
}

{
	return ic.check(true)
}

{
	PrintVerboseInfo("PackageManager.Add", "running...")

	// Check for package manager status and user agreement
	err := p.CheckStatus()
	if err != nil {
		PrintVerboseErr("PackageManager.Add", 0, err)
		return err
	}

	// Check if package was removed before
	packageWasRemoved := false
	removedIndex := -1
	pkgsRemove, err := p.GetRemovePackages()
	if err != nil {
		PrintVerboseErr("PackageManager.Add", 2.1, err)
		return err
	}
	for i, rp := range pkgsRemove {
		if rp == pkg {
			packageWasRemoved = true
			removedIndex = i
			break
		}
	}

	// packages that have been removed by the user aren't always in the repo
	if !packageWasRemoved {
		// Check if package exists in repo
		for _, _pkg := range strings.Split(pkg, " ") {
			err := p.ExistsInRepo(_pkg)
			if err != nil {
				PrintVerboseErr("PackageManager.Add", 0, err)
				return err
			}
		}
	}

	// Add to unstaged packages first
	upkgs, err := p.GetUnstagedPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.Add", 1, err)
		return err
	}
	upkgs = append(upkgs, UnstagedPackage{pkg, ADD})
	err = p.writeUnstagedPackages(upkgs)
	if err != nil {
		PrintVerboseErr("PackageManager.Add", 2, err)
		return err
	}

	// If package was removed by the user, simply remove it from packages.remove
	// Unstaged will take care of the rest
	if packageWasRemoved {
		pkgsRemove = append(pkgsRemove[:removedIndex], pkgsRemove[removedIndex+1:]...)
		PrintVerboseInfo("PackageManager.Add", "unsetting manually removed package")
		return p.writeRemovePackages(pkgsRemove)
	}

	// Abort if package is already added
	pkgsAdd, err := p.GetAddPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.Add", 3, err)
		return err
	}
	for _, p := range pkgsAdd {
		if p == pkg {
			PrintVerboseInfo("PackageManager.Add", "package already added")
			return nil
		}
	}

	pkgsAdd = append(pkgsAdd, pkg)

	PrintVerboseInfo("PackageManager.Add", "writing packages.add")
	return p.writeAddPackages(pkgsAdd)
}

{
	PrintVerboseInfo("PackageManager.Remove", "running...")

	// Check for package manager status and user agreement
	err := p.CheckStatus()
	if err != nil {
		PrintVerboseErr("PackageManager.Remove", 0, err)
		return err
	}

	// Check if package exists in repo
	// FIXME: this should also check if the package is actually installed
	// in the system, not just if it exists in the repo. Since this is a distro
	// specific feature, I'm leaving it as is for now.
	err = p.ExistsInRepo(pkg)
	if err != nil {
		PrintVerboseErr("PackageManager.Remove", 1, err)
		return err
	}

	// Add to unstaged packages first
	upkgs, err := p.GetUnstagedPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.Remove", 2, err)
		return err
	}
	upkgs = append(upkgs, UnstagedPackage{pkg, REMOVE})
	err = p.writeUnstagedPackages(upkgs)
	if err != nil {
		PrintVerboseErr("PackageManager.Remove", 3, err)
		return err
	}

	// If package was added by the user, simply remove it from packages.add
	// Unstaged will take care of the rest
	pkgsAdd, err := p.GetAddPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.Remove", 4, err)
		return err
	}
	for i, ap := range pkgsAdd {
		if ap == pkg {
			pkgsAdd = append(pkgsAdd[:i], pkgsAdd[i+1:]...)
			PrintVerboseInfo("PackageManager.Remove", "removing manually added package")
			return p.writeAddPackages(pkgsAdd)
		}
	}

	// Abort if package is already removed
	pkgsRemove, err := p.GetRemovePackages()
	if err != nil {
		PrintVerboseErr("PackageManager.Remove", 5, err)
		return err
	}
	for _, p := range pkgsRemove {
		if p == pkg {
			PrintVerboseInfo("PackageManager.Remove", "package already removed")
			return nil
		}
	}

	pkgsRemove = append(pkgsRemove, pkg)

	// Otherwise, add package to packages.remove
	PrintVerboseInfo("PackageManager.Remove", "writing packages.remove")
	return p.writeRemovePackages(pkgsRemove)
}

{
	PrintVerboseInfo("PackageManager.GetAddPackages", "running...")
	return p.getPackages(PackagesAddFile)
}

{
	PrintVerboseInfo("PackageManager.GetRemovePackages", "running...")
	return p.getPackages(PackagesRemoveFile)
}

{
	PrintVerboseInfo("PackageManager.GetUnstagedPackages", "running...")
	pkgs, err := p.getPackages(PackagesUnstagedFile)
	if err != nil {
		PrintVerboseErr("PackageManager.GetUnstagedPackages", 0, err)
		return nil, err
	}

	unstagedList := []UnstagedPackage{}
	for _, line := range pkgs {
		if line == "" || line == "\n" {
			continue
		}

		splits := strings.SplitN(line, " ", 2)
		unstagedList = append(unstagedList, UnstagedPackage{splits[1], splits[0]})
	}

	return unstagedList, nil
}

{
	PrintVerboseInfo("PackageManager.GetUnstagedPackagesPlain", "running...")
	pkgs, err := p.GetUnstagedPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.GetUnstagedPackagesPlain", 0, err)
		return nil, err
	}

	unstagedList := []string{}
	for _, pkg := range pkgs {
		unstagedList = append(unstagedList, pkg.Name)
	}

	return unstagedList, nil
}

{
	PrintVerboseInfo("PackageManager.ClearUnstagedPackages", "running...")
	return p.writeUnstagedPackages([]UnstagedPackage{})
}

{
	PrintVerboseInfo("PackageManager.GetAddPackagesString", "running...")
	pkgs, err := p.GetAddPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.GetAddPackagesString", 0, err)
		return "", err
	}

	PrintVerboseInfo("PackageManager.GetAddPackagesString", "done")
	return strings.Join(pkgs, sep), nil
}

{
	PrintVerboseInfo("PackageManager.GetRemovePackagesString", "running...")
	pkgs, err := p.GetRemovePackages()
	if err != nil {
		PrintVerboseErr("PackageManager.GetRemovePackagesString", 0, err)
		return "", err
	}

	PrintVerboseInfo("PackageManager.GetRemovePackagesString", "done")
	return strings.Join(pkgs, sep), nil
}

{
	PrintVerboseInfo("PackageManager.getPackages", "running...")

	pkgs := []string{}
	f, err := os.Open(filepath.Join(p.baseDir, file))
	if err != nil {
		PrintVerboseErr("PackageManager.getPackages", 0, err)
		return pkgs, err
	}
	defer f.Close()

	b, err := io.ReadAll(f)
	if err != nil {
		PrintVerboseErr("PackageManager.getPackages", 1, err)
		return pkgs, err
	}

	pkgs = strings.Split(strings.TrimSpace(string(b)), "\n")

	PrintVerboseInfo("PackageManager.getPackages", "returning packages")
	return pkgs, nil
}

{
	PrintVerboseInfo("PackageManager.writeAddPackages", "running...")
	return p.writePackages(PackagesAddFile, pkgs)
}

{
	PrintVerboseInfo("PackageManager.writeRemovePackages", "running...")
	return p.writePackages(PackagesRemoveFile, pkgs)
}

{
	PrintVerboseInfo("PackageManager.writeUnstagedPackages", "running...")

	// create slice without redundant entries
	pkgsCleaned := []UnstagedPackage{}
	for _, pkg := range pkgs {
		isDuplicate := false
		for iCmp, pkgCmp := range pkgsCleaned {
			if pkg.Name == pkgCmp.Name {
				isDuplicate = true

				// remove complement (+ then - or - then +)
				if pkg.Status != pkgCmp.Status {
					pkgsCleaned = append(pkgsCleaned[:iCmp], pkgsCleaned[iCmp+1:]...)
				}

				break
			}
		}

		// don't add duplicate
		if !isDuplicate {
			pkgsCleaned = append(pkgsCleaned, pkg)
		}
	}

	pkgFmt := []string{}
	for _, pkg := range pkgsCleaned {
		pkgFmt = append(pkgFmt, fmt.Sprintf("%s %s", pkg.Status, pkg.Name))
	}

	return p.writePackages(PackagesUnstagedFile, pkgFmt)
}

{
	PrintVerboseInfo("PackageManager.writePackages", "running...")

	f, err := os.Create(filepath.Join(p.baseDir, file))
	if err != nil {
		PrintVerboseErr("PackageManager.writePackages", 0, err)
		return err
	}
	defer f.Close()

	for _, pkg := range pkgs {
		if pkg == "" {
			continue
		}

		_, err = fmt.Fprintf(f, "%s\n", pkg)
		if err != nil {
			PrintVerboseErr("PackageManager.writePackages", 1, err)
			return err
		}
	}

	PrintVerboseInfo("PackageManager.writePackages", "packages written")
	return nil
}

{
	PrintVerboseInfo("PackageManager.processApplyPackages", "running...")

	unstaged, err := p.GetUnstagedPackages()
	if err != nil {
		PrintVerboseErr("PackageManager.processApplyPackages", 0, err)
	}

	var addPkgs, removePkgs []string
	for _, pkg := range unstaged {
		switch pkg.Status {
		case ADD:
			addPkgs = append(addPkgs, pkg.Name)
		case REMOVE:
			removePkgs = append(removePkgs, pkg.Name)
		}
	}

	finalAddPkgs := ""
	if len(addPkgs) > 0 {
		finalAddPkgs = fmt.Sprintf("%s %s", settings.Cnf.IPkgMngAdd, strings.Join(addPkgs, " "))
	}

	finalRemovePkgs := ""
	if len(removePkgs) > 0 {
		finalRemovePkgs = fmt.Sprintf("%s %s", settings.Cnf.IPkgMngRm, strings.Join(removePkgs, " "))
	}

	return finalAddPkgs, finalRemovePkgs
}

{
	addPkgs, err := p.GetAddPackagesString(" ")
	if err != nil {
		PrintVerboseErr("PackageManager.processUpgradePackages", 0, err)
		return "", ""
	}

	removePkgs, err := p.GetRemovePackagesString(" ")
	if err != nil {
		PrintVerboseErr("PackageManager.processUpgradePackages", 1, err)
		return "", ""
	}

	if len(addPkgs) == 0 && len(removePkgs) == 0 {
		PrintVerboseInfo("PackageManager.processUpgradePackages", "no packages to install or remove")
		return "", ""
	}

	finalAddPkgs := ""
	if addPkgs != "" {
		finalAddPkgs = fmt.Sprintf("%s %s", settings.Cnf.IPkgMngAdd, addPkgs)
	}

	finalRemovePkgs := ""
	if removePkgs != "" {
		finalRemovePkgs = fmt.Sprintf("%s %s", settings.Cnf.IPkgMngRm, removePkgs)
	}

	return finalAddPkgs, finalRemovePkgs
}

{
	PrintVerboseInfo("PackageManager.GetFinalCmd", "running...")

	var finalAddPkgs, finalRemovePkgs string
	if operation == APPLY {
		finalAddPkgs, finalRemovePkgs = p.processApplyPackages()
	} else {
		finalAddPkgs, finalRemovePkgs = p.processUpgradePackages()
	}

	cmd := ""
	if finalAddPkgs != "" && finalRemovePkgs != "" {
		cmd = fmt.Sprintf("%s && %s", finalAddPkgs, finalRemovePkgs)
	} else if finalAddPkgs != "" {
		cmd = finalAddPkgs
	} else if finalRemovePkgs != "" {
		cmd = finalRemovePkgs
	}

	// No need to add pre/post hooks to an empty operation
	if cmd == "" {
		return cmd
	}

	preExec := settings.Cnf.IPkgMngPre
	postExec := settings.Cnf.IPkgMngPost
	if preExec != "" {
		cmd = fmt.Sprintf("%s && %s", preExec, cmd)
	}
	if postExec != "" {
		cmd = fmt.Sprintf("%s && %s", cmd, postExec)
	}

	PrintVerboseInfo("PackageManager.GetFinalCmd", "returning cmd: "+cmd)
	return cmd
}

{
	if p.CheckStatus() != nil {
		return "", nil
	}

	addPkgs, err := p.GetAddPackages()
	if err != nil {
		if errors.Is(err, &os.PathError{}) {
			addPkgs = []string{}
		} else {
			return "", err
		}
	}
	removePkgs, err := p.GetRemovePackages()
	if err != nil {
		if errors.Is(err, &os.PathError{}) {
			removePkgs = []string{}
		} else {
			return "", err
		}
	}

	// GetPackages returns slices with one empty element if there are no packages
	if len(addPkgs) == 1 && addPkgs[0] == "" {
		addPkgs = []string{}
	}
	if len(removePkgs) == 1 && removePkgs[0] == "" {
		removePkgs = []string{}
	}

	summary := ""

	for _, pkg := range addPkgs {
		summary += "+ " + pkg + "\n"
	}
	for _, pkg := range removePkgs {
		summary += "- " + pkg + "\n"
	}

	return summary, nil
}

{
	summary, err := p.getSummary()
	if err != nil {
		return err
	}
	if summary == "" {
		return nil
	}
	summaryFile, err := os.Create(summaryFilePath)
	if err != nil {
		return err
	}
	defer summaryFile.Close()
	err = summaryFile.Chmod(0o644)
	if err != nil {
		return err
	}
	_, err = summaryFile.WriteString(summary)
	if err != nil {
		return err
	}

	return nil
}

{
	PrintVerboseInfo("PackageManager.ExistsInRepo", "running...")

	ok, err := assertPkgMngApiSetUp()
	if err != nil {
		return err
	}
	if !ok {
		return nil
	}

	url := strings.Replace(settings.Cnf.IPkgMngApi, "{packageName}", pkg, 1)
	PrintVerboseInfo("PackageManager.ExistsInRepo", "checking if package exists in repo: "+url)

	resp, err := http.Get(url)
	if err != nil {
		PrintVerboseErr("PackageManager.ExistsInRepo", 0, err)
		return err
	}

	if resp.StatusCode != 200 {
		PrintVerboseInfo("PackageManager.ExistsInRepo", "package does not exist in repo")
		return fmt.Errorf("package does not exist in repo: %s", pkg)
	}

	PrintVerboseInfo("PackageManager.ExistsInRepo", "package exists in repo")
	return nil
}

{
	PrintVerboseInfo("PackageManager.AcceptUserAgreement", "running...")

	if p.Status != PKG_MNG_REQ_AGREEMENT {
		PrintVerboseInfo("PackageManager.AcceptUserAgreement", "package manager is not in agreement mode")
		return nil
	}

	err := os.WriteFile(
		PkgManagerUserAgreementFile,
		[]byte(time.Now().String()),
		0o644,
	)
	if err != nil {
		PrintVerboseErr("PackageManager.AcceptUserAgreement", 0, err)
		return err
	}

	return nil
}

{
	PrintVerboseInfo("PackageManager.GetUserAgreementStatus", "running...")

	if p.Status != PKG_MNG_REQ_AGREEMENT {
		PrintVerboseInfo("PackageManager.GetUserAgreementStatus", "package manager is not in agreement mode")
		return true
	}

	_, err := os.Stat(PkgManagerUserAgreementFile)
	if err != nil {
		PrintVerboseInfo("PackageManager.GetUserAgreementStatus", "user has not accepted the agreement")
		return false
	}

	PrintVerboseInfo("PackageManager.GetUserAgreementStatus", "user has accepted the agreement")
	return true
}

{
	PrintVerboseInfo("PackageManager.CheckStatus", "running...")

	// Check if package manager is enabled
	if p.Status == PKG_MNG_DISABLED {
		PrintVerboseInfo("PackageManager.CheckStatus", "package manager is disabled")
		return nil
	}

	// Check if user has accepted the package manager agreement
	if p.Status == PKG_MNG_REQ_AGREEMENT {
		if !p.GetUserAgreementStatus() {
			PrintVerboseInfo("PackageManager.CheckStatus", "package manager agreement not accepted")
			err := errors.New("package manager agreement not accepted")
			return err
		}
	}

	PrintVerboseInfo("PackageManager.CheckStatus", "package manager is enabled")
	return nil
}

{
	PrintVerboseInfo("DiskManager.GetPartitionByLabel", "retrieving partitions")

	partitions, err := d.GetPartitions("")
	if err != nil {
		PrintVerboseErr("DiskManager.GetPartitionByLabel", 0, err)
		return Partition{}, err
	}

	for _, part := range partitions {
		if part.Label == label {
			PrintVerboseInfo("DiskManager.GetPartitionByLabel", "Partition with UUID", part.Uuid, "has label", label)
			return part, nil
		}
	}

	errMsg := fmt.Errorf("could not find partition with label %s", label)
	PrintVerboseErr("DiskManager.GetPartitionByLabel", 1, errMsg)
	return Partition{}, errMsg
}

{
	PrintVerboseInfo("DiskManager.getPartitions", "running...")

	output, err := exec.Command("lsblk", "-J", "-o", "NAME,FSTYPE,LABEL,MOUNTPOINT,UUID").Output()
	if err != nil {
		PrintVerboseErr("DiskManager.getPartitions", 0, err)
		return nil, err
	}

	var partitions struct {
		BlockDevices []struct {
			Name     string     `json:"name"`
			Type     string     `json:"type"`
			Children []Children `json:"children"`
		} `json:"blockdevices"`
	}

	if err := json.Unmarshal(output, &partitions); err != nil {
		PrintVerboseErr("DiskManager.getPartitions", 1, err)
		return nil, err
	}

	var result []Partition
	for _, blockDevice := range partitions.BlockDevices {
		if device != "" && blockDevice.Name != device {
			continue
		}

		iterChildren(&blockDevice.Children, &result)
	}

	PrintVerboseInfo("DiskManager.getPartitions", "successfully got partitions for disk", device)

	return result, nil
}

{
	PrintVerboseInfo("Partition.Mount", "running...")

	if _, err := os.Stat(destination); os.IsNotExist(err) {
		if err := os.MkdirAll(destination, 0755); err != nil {
			PrintVerboseErr("Partition.Mount", 0, err)
			return err
		}
	}

	devicePath := "/dev/"
	if p.IsDevMapper() {
		devicePath += "mapper/"
	}
	devicePath += p.Device

	err := syscall.Mount(devicePath, destination, p.FsType, 0, "")
	if err != nil {
		PrintVerboseErr("Partition.Mount", 1, err)
		return err
	}

	p.MountPoint = destination
	PrintVerboseInfo("Partition.Mount", "successfully mounted", devicePath, "to", destination)
	return nil
}

{
	PrintVerboseInfo("Partition.Unmount", "running...")

	if p.MountPoint == "" {
		PrintVerboseErr("Partition.Unmount", 0, errors.New("no mount point"))
		return errors.New("no mount point")
	}

	err := syscall.Unmount(p.MountPoint, 0)
	if err != nil {
		PrintVerboseErr("Partition.Unmount", 1, err)
		return err
	}

	PrintVerboseInfo("Partition.Unmount", "successfully unmounted", p.MountPoint)
	p.MountPoint = ""

	return nil
}

{
	return p.Parent != nil
}

{
	return strings.HasPrefix(p.FsType, "crypto_")
}

{
	return "not enough space in disk"
}

{
	PrintVerboseInfo("ABRootManager.GetRootPartitions", "running...")

	diskM := NewDiskManager()
	rootLabels := []string{settings.Cnf.PartLabelA, settings.Cnf.PartLabelB}
	for _, label := range rootLabels {
		partition, err := diskM.GetPartitionByLabel(label)
		if err != nil {
			PrintVerboseErr("ABRootManager.GetRootPartitions", 0, err)
			return err
		}

		identifier, err := a.IdentifyPartition(partition)
		if err != nil {
			PrintVerboseErr("ABRootManager.GetRootPartitions", 1, err)
			return err
		}

		isCurrent := a.IsCurrent(partition)
		a.Partitions = append(a.Partitions, ABRootPartition{
			Label:        partition.Label,
			IdentifiedAs: identifier,
			Partition:    partition,
			MountPoint:   partition.MountPoint,
			MountOptions: partition.MountOptions,
			Uuid:         partition.Uuid,
			FsType:       partition.FsType,
			Current:      isCurrent,
		})
	}

	partition, err := diskM.GetPartitionByLabel(settings.Cnf.PartLabelVar)
	if err != nil {
		PrintVerboseErr("ABRootManager.GetRootPartitions", 2, err)
		return err
	}
	a.VarPartition = partition

	PrintVerboseInfo("ABRootManager.GetRootPartitions", "successfully got root partitions")

	return nil
}

{
	PrintVerboseInfo("ABRootManager.IsCurrent", "running...")

	if partition.MountPoint == "/" {
		PrintVerboseInfo("ABRootManager.IsCurrent", "partition is current")
		return true
	}

	PrintVerboseInfo("ABRootManager.IsCurrent", "partition is not current")
	return false
}

{
	PrintVerboseInfo("ABRootManager.IdentifyPartition", "running...")

	if partition.Label == settings.Cnf.PartLabelA || partition.Label == settings.Cnf.PartLabelB {
		if partition.MountPoint == "/" {
			PrintVerboseInfo("ABRootManager.IdentifyPartition", "partition is present")
			return "present", nil
		}

		PrintVerboseInfo("ABRootManager.IdentifyPartition", "partition is future")
		return "future", nil
	}

	err = errors.New("partition is not managed by ABRoot")
	PrintVerboseErr("ABRootManager.IdentifyPartition", 0, err)
	return "", err
}

{
	PrintVerboseInfo("ABRootManager.GetPresent", "running...")

	for _, partition := range a.Partitions {
		if partition.IdentifiedAs == "present" {
			PrintVerboseInfo("ABRootManager.GetPresent", "successfully got present partition")
			return partition, nil
		}
	}

	err = errors.New("present partition not found")
	PrintVerboseErr("ABRootManager.GetPresent", 0, err)
	return ABRootPartition{}, err
}

{
	PrintVerboseInfo("ABRootManager.GetFuture", "running...")

	for _, partition := range a.Partitions {
		if partition.IdentifiedAs == "future" {
			PrintVerboseInfo("ABRootManager.GetFuture", "successfully got future partition")
			return partition, nil
		}
	}

	err = errors.New("future partition not found")
	PrintVerboseErr("ABRootManager.GetFuture", 0, err)
	return ABRootPartition{}, err
}

{
	PrintVerboseInfo("ABRootManager.GetOther", "running...")

	present, err := a.GetPresent()
	if err != nil {
		PrintVerboseErr("ABRootManager.GetOther", 0, err)
		return ABRootPartition{}, err
	}

	if present.Label == settings.Cnf.PartLabelA {
		PrintVerboseInfo("ABRootManager.GetOther", "successfully got other partition")
		return a.GetPartition(settings.Cnf.PartLabelB)
	}

	PrintVerboseInfo("ABRootManager.GetOther", "successfully got other partition")
	return a.GetPartition(settings.Cnf.PartLabelA)
}

{
	PrintVerboseInfo("ABRootManager.GetPartition", "running...")

	for _, partition := range a.Partitions {
		if partition.Label == label {
			PrintVerboseInfo("ABRootManager.GetPartition", "successfully got partition")
			return partition, nil
		}
	}

	err = errors.New("partition not found")
	PrintVerboseErr("ABRootManager.GetPartition", 0, err)
	return ABRootPartition{}, err
}

{
	PrintVerboseInfo("ABRootManager.GetBoot", "running...")

	diskM := NewDiskManager()
	part, err := diskM.GetPartitionByLabel(settings.Cnf.PartLabelBoot)
	if err != nil {
		err = errors.New("boot partition not found")
		PrintVerboseErr("ABRootManager.GetBoot", 0, err)

		return Partition{}, err
	}

	PrintVerboseInfo("ABRootManager.GetBoot", "successfully got boot partition")
	return part, nil
}

{
	PrintVerboseInfo("ABRootManager.GetInit", "running...")

	// Make sure Thin-Provisioning is properly configured
	if !settings.Cnf.ThinProvisioning || settings.Cnf.ThinInitVolume == "" {
		return Partition{}, errors.New("ABRootManager.GetInit: error: system is not configured for thin-provisioning")
	}

	diskM := NewDiskManager()
	part, err := diskM.GetPartitionByLabel(settings.Cnf.ThinInitVolume)
	if err != nil {
		err = errors.New("init volume not found")
		PrintVerboseErr("ABRootManager.GetInit", 0, err)

		return Partition{}, err
	}

	PrintVerboseInfo("ABRootManager.GetInit", "successfully got init volume")
	return part, nil
}

{
	PrintVerboseInfo("Chroot.Close", "running...")

	err := syscall.Unmount(filepath.Join(c.root, "/dev/pts"), 0)
	if err != nil {
		PrintVerboseErr("Chroot.Close", 0, err)
		return err
	}

	mountList := ReservedMounts
	if c.etcMounted {
		mountList = append(mountList, "/etc")
	}
	mountList = append(mountList, "")

	for _, mount := range mountList {
		if mount == "/dev/pts" {
			continue
		}

		mountDir := filepath.Join(c.root, mount)
		PrintVerboseInfo("Chroot.Close", "unmounting", mountDir)
		err := syscall.Unmount(mountDir, 0)
		if err != nil {
			PrintVerboseErr("Chroot.Close", 1, err)
			return err
		}
	}

	PrintVerboseInfo("Chroot.Close", "successfully closed.")
	return nil
}

{
	PrintVerboseInfo("Chroot.Execute", "running...")

	cmd = strings.Join(append([]string{cmd}, args...), " ")
	PrintVerboseInfo("Chroot.Execute", "running command:", cmd)
	e := exec.Command("chroot", c.root, "/bin/sh", "-c", cmd)
	e.Stdout = os.Stdout
	e.Stderr = os.Stderr
	e.Stdin = os.Stdin
	err := e.Run()
	if err != nil {
		PrintVerboseErr("Chroot.Execute", 0, err)
		return err
	}

	PrintVerboseInfo("Chroot.Execute", "successfully ran.")
	return nil
}

{
	PrintVerboseInfo("Chroot.ExecuteCmds", "running...")

	for _, cmd := range cmds {
		err := c.Execute(cmd, []string{})
		if err != nil {
			PrintVerboseErr("Chroot.ExecuteCmds", 0, err)
			return err
		}
	}

	PrintVerboseInfo("Chroot.ExecuteCmds", "successfully ran.")
	return nil
}

{
	PrintVerboseInfo("Registry.HasUpdate", "Checking for updates ...")

	token, err := GetToken()
	if err != nil {
		PrintVerboseErr("Registry.HasUpdate", 0, err)
		return "", false
	}

	manifest, err := r.GetManifest(token)
	if err != nil {
		PrintVerboseErr("Registry.HasUpdate", 1, err)
		return "", false
	}

	if manifest.Digest == digest {
		PrintVerboseInfo("Registry.HasUpdate", "no update available")
		return "", false
	}

	PrintVerboseInfo("Registry.HasUpdate", "update available. Old digest", digest, "new digest", manifest.Digest)
	return manifest.Digest, true
}

{
	PrintVerboseInfo("Registry.GetManifest", "running...")

	manifestAPIUrl := fmt.Sprintf("%s/%s/manifests/%s", r.API, settings.Cnf.Name, settings.Cnf.Tag)
	PrintVerboseInfo("Registry.GetManifest", "call URI is", manifestAPIUrl)

	req, err := http.NewRequest("GET", manifestAPIUrl, nil)
	if err != nil {
		PrintVerboseErr("Registry.GetManifest", 0, err)
		return nil, err
	}

	req.Header.Set("User-Agent", "abroot")
	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
	req.Header.Set("Accept", "application/vnd.oci.image.manifest.v1+json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		PrintVerboseErr("Registry.GetManifest", 1, err)
		return nil, err
	}
	defer resp.Body.Close()

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		PrintVerboseErr("Registry.GetManifest", 2, err)
		return nil, err
	}

	m := make(map[string]interface{})
	err = json.Unmarshal(body, &m)
	if err != nil {
		PrintVerboseErr("Registry.GetManifest", 3, err)
		return nil, err
	}

	// If the manifest contains an errors property, it means that the
	// request failed. Ref: https://github.com/Vanilla-OS/ABRoot/issues/285
	if m["errors"] != nil {
		errors := m["errors"].([]interface{})
		for _, e := range errors {
			err := e.(map[string]interface{})
			PrintVerboseErr("Registry.GetManifest", 3.5, err)
			return nil, fmt.Errorf("Registry error: %s", err["code"])
		}
	}

	// digest is stored in the header
	digest := resp.Header.Get("Docker-Content-Digest")

	// we need to parse the layers to get the digests
	var layerDigests []string
	if m["layers"] == nil && m["fsLayers"] == nil {
		PrintVerboseErr("Registry.GetManifest", 4, err)
		return nil, fmt.Errorf("Manifest does not contain layer property")
	} else if m["layers"] == nil && m["fsLayers"] != nil {
		PrintVerboseWarn("Registry.GetManifest", 4, "layers property not found, using fsLayers")
		layers := m["fsLayers"].([]interface{})
		for _, layer := range layers {
			layerDigests = append(layerDigests, layer.(map[string]interface{})["blobSum"].(string))
		}
	} else {
		layers := m["layers"].([]interface{})
		var layerDigests []string
		for _, layer := range layers {
			layerDigests = append(layerDigests, layer.(map[string]interface{})["digest"].(string))
		}
	}

	PrintVerboseInfo("Registry.GetManifest", "success")
	manifest := &Manifest{
		Manifest: body,
		Digest:   digest,
		Layers:   layerDigests,
	}

	return manifest, nil
}

{
	PrintVerboseInfo("ABSystem.CheckAll", "running...")

	err := s.Checks.PerformAllChecks()
	if err != nil {
		PrintVerboseErr("ABSystem.CheckAll", 0, err)
		return err
	}

	PrintVerboseInfo("ABSystem.CheckAll", "all checks passed")
	return nil
}

{
	PrintVerboseInfo("ABSystem.CheckUpdate", "running...")
	return s.Registry.HasUpdate(s.CurImage.Digest)
}

{
	PrintVerboseInfo("ABSystem.CreateRootSymlinks", "creating symlinks")
	links := []string{"mnt", "proc", "run", "dev", "media", "root", "sys", "tmp", "var"}

	for _, link := range links {
		linkName := filepath.Join(systemNewPath, link)

		err := os.RemoveAll(linkName)
		if err != nil {
			PrintVerboseErr("ABSystem.CreateRootSymlinks", 1, err)
			return err
		}

		targetName := filepath.Join("/", link)

		err = os.Symlink(targetName, linkName)
		if err != nil {
			PrintVerboseErr("ABSystem.CreateRootSymlinks", 2, err)
			return err
		}
	}

	return nil
}

{
	PrintVerboseInfo("ABSystem.RunOperation", "starting", operation)

	cq := goodies.NewCleanupQueue()
	defer cq.Run()

	// Stage 0: Check if upgrade is possible
	// -------------------------------------
	PrintVerboseSimple("[Stage 0] -------- ABSystemRunOperation")

	if s.UpgradeLockExists() {
		if isAbrootRunning() {
			PrintVerboseWarn("ABSystemRunOperation", 0, "upgrades are locked, another is running")
			return errors.New("upgrades are locked, another is running")
		}

		err := removeUpgradeLock()
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 0, err)
			return err
		}
	}

	err := s.LockUpgrade()
	if err != nil {
		PrintVerboseErr("ABSystemRunOperation", 0.1, err)
		return err
	}

	// here we create the stage file to indicate that the upgrade is in progress
	// and the process can safely be stopped
	err = s.CreateStageFile()
	if err != nil {
		PrintVerboseErr("ABSystemRunOperation", 0.2, err)
		return err
	}

	cq.Add(func(args ...interface{}) error {
		return s.UnlockUpgrade()
	}, nil, 100, &goodies.NoErrorHandler{}, false)

	// Stage 1: Check if there is an update available
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 1] -------- ABSystemRunOperation")

	if s.UserLockRequested() {
		err := errors.New("upgrade locked per user request")
		PrintVerboseErr("ABSystemRunOperation", 1, err)
		return err
	}

	var imageDigest string
	if operation != APPLY && operation != INITRAMFS {
		var res bool
		imageDigest, res = s.CheckUpdate()
		if !res {
			if operation != FORCE_UPGRADE {
				PrintVerboseErr("ABSystemRunOperation", 1.1, err)
				return ErrNoUpdate
			}
			imageDigest = s.CurImage.Digest
			PrintVerboseWarn("ABSystemRunOperation", 1.2, "No update available but --force is set. Proceeding...")
		}
	} else {
		imageDigest = s.CurImage.Digest
	}

	// Stage 2: Get the future root and boot partitions,
	// 			mount future to /part-future and clean up
	// 			old .system_new and abimage-new.abr (it is
	// 			possible that last transaction was interrupted
	// 			before the clean up was done). Finally run
	// 			the IntegrityCheck on the future root.
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 2] -------- ABSystemRunOperation")

	if s.UserLockRequested() {
		err := errors.New("upgrade locked per user request")
		PrintVerboseErr("ABSystemRunOperation", 2, err)
		return err
	}

	partFuture, err := s.RootM.GetFuture()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 2.1, err)
		return err
	}

	partBoot, err := s.RootM.GetBoot()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 2.2, err)
		return err
	}

	partFuture.Partition.Unmount() // just in case
	partBoot.Unmount()

	err = partFuture.Partition.Mount("/part-future/")
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 2.3, err)
		return err
	}

	os.RemoveAll("/part-future/.system_new")
	os.RemoveAll("/part-future/abimage-new.abr") // errors are safe to ignore

	cq.Add(func(args ...interface{}) error {
		return partFuture.Partition.Unmount()
	}, nil, 90, &goodies.NoErrorHandler{}, false)

	_, err = NewIntegrityCheck(partFuture, settings.Cnf.AutoRepair)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 2.4, err)
		return err
	}

	// Stage 3: Make a imageRecipe with user packages
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 3] -------- ABSystemRunOperation")

	if s.UserLockRequested() {
		err := errors.New("upgrade locked per user request")
		PrintVerboseErr("ABSystemRunOperation", 3, err)
		return err
	}

	futurePartition, err := s.RootM.GetFuture()
	if err != nil {
		PrintVerboseErr("ABSystemRunOperation", 3.1, err)
		return err
	}

	labels := map[string]string{
		"maintainer":  "'Generated by ABRoot'",
		"ABRoot.root": futurePartition.Label,
	}
	args := map[string]string{}
	pkgM, err := NewPackageManager(false)
	if err != nil {
		PrintVerboseErr("ABSystemRunOperation", 3.2, err)
		return err
	}

	pkgsFinal := pkgM.GetFinalCmd(operation)
	if pkgsFinal == "" {
		pkgsFinal = "true"
	}
	content := `RUN ` + pkgsFinal

	var imageName string
	switch operation {
	case APPLY, DRY_RUN_APPLY, INITRAMFS, DRY_RUN_INITRAMFS:
		presentPartition, err := s.RootM.GetPresent()
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 3.3, err)
			return err
		}
		imageName, err = RetrieveImageForRoot(presentPartition.Label)
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 3.4, err)
			return err
		}
		// Handle case where an image for the current root may not exist
		// in storage
		if imageName == "" {
			imageName = settings.Cnf.FullImageName
		}
	default:
		imageName = strings.Split(settings.Cnf.FullImageName, ":")[0]
		imageName += "@" + imageDigest
		labels["ABRoot.BaseImageDigest"] = imageDigest
	}

	// Stage 3.1: Delete old image
	switch operation {
	case DRY_RUN_UPGRADE, DRY_RUN_APPLY, DRY_RUN_INITRAMFS:
	default:
		err = DeleteImageForRoot(futurePartition.Label)
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 3.5, err)
			return err
		}
	}

	imageRecipe := NewImageRecipe(
		imageName,
		labels,
		args,
		content,
	)

	// Stage 4: Extract the rootfs
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 4] -------- ABSystemRunOperation")

	if s.UserLockRequested() {
		err := errors.New("upgrade locked per user request")
		PrintVerboseErr("ABSystemRunOperation", 4, err)
		return err
	}

	abrootTrans := filepath.Join(partFuture.Partition.MountPoint, "abroot-trans")
	systemOld := filepath.Join(partFuture.Partition.MountPoint, ".system")
	systemNew := filepath.Join(partFuture.Partition.MountPoint, ".system.new")
	if os.Getenv("ABROOT_FREE_SPACE") != "" {
		PrintVerboseInfo("ABSystemRunOperation", "ABROOT_FREE_SPACE is set, deleting future system to free space, this is potentially harmful, assuming we are in a test environment")
		err := os.RemoveAll(systemOld)
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 4, err)
			return err
		}
		err = os.MkdirAll(systemOld, 0o755)
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 4.1, err)
			return err
		}
	} else {
		PrintVerboseInfo("ABSystemRunOperation", "Creating a reflink clone of the old system to copy into")
		err := os.RemoveAll(systemNew)
		if err != nil {
			PrintVerboseErr("ABSystemRunOperation", 4.11, "could not cleanup old systemNew folder", err)
			return err
		}
		err = exec.Command("cp", "--reflink", "-a", systemOld, systemNew).Run()
		if err != nil {
			PrintVerboseWarn("ABSystemRunOperation", 4.12, "reflink copy of system failed, falling back to slow copy because:", err)
			// can be safely ignored
			// file system doesn't support CoW
		}
	}

	err = OciExportRootFs(
		"abroot-"+uuid.New().String(),
		imageRecipe,
		abrootTrans,
		systemNew,
	)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 4.2, err)
		return err
	}

	cq.Add(func(args ...interface{}) error {
		return pkgM.ClearUnstagedPackages()
	}, nil, 10, &goodies.NoErrorHandler{}, false)

	// Stage 5: Write abimage.abr.new and config to future/
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 5] -------- ABSystemRunOperation")

	if s.UserLockRequested() {
		err := errors.New("upgrade locked per user request")
		PrintVerboseErr("ABSystemRunOperation", 5, err)
		return err
	}

	abimage, err := NewABImage(imageDigest, settings.Cnf.FullImageName)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 5.1, err)
		return err
	}

	err = abimage.WriteTo(partFuture.Partition.MountPoint, "new")
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 5.2, err)
		return err
	}

	varParent := s.RootM.VarPartition.Parent
	if varParent != nil && varParent.IsEncrypted() {
		device := varParent.Device
		if varParent.IsDevMapper() {
			device = "/dev/mapper/" + device
		} else {
			device = "/dev/" + device
		}

		settings.Cnf.PartCryptVar = device
	}

	err = settings.WriteConfigToFile(filepath.Join(systemNew, "/usr/share/abroot/abroot.json"))
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 5.25, err)
		return err
	}

	err = pkgM.WriteSummaryToFile(filepath.Join(systemNew, "/usr/share/abroot/package-summary"))
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 5.26, err)
		return err
	}

	// from this point on, it is not possible to stop the upgrade
	// so we remove the stage file. Note that interrupting the upgrade
	// from this point on will not leave the system in an inconsistent
	// state, but it could leave the future partition in a dirty state
	// preventing it from booting.
	err = s.RemoveStageFile()
	if err != nil {
		PrintVerboseErr("ABSystemRunOperation", 5.3, err)
		return err
	}

	// Stage (dry): If dry-run, exit here before writing to disk
	// ------------------------------------------------
	switch operation {
	case DRY_RUN_UPGRADE, DRY_RUN_APPLY, DRY_RUN_INITRAMFS:
		PrintVerboseInfo("ABSystem.RunOperation", "dry-run completed")
		return nil
	}

	// Stage 6: Update the bootloader
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 6] -------- ABSystemRunOperation")

	partPresent, err := s.RootM.GetPresent()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.01, "failed to get present partition:", err)
	}

	chroot, err := NewChroot(
		systemNew,
		partFuture.Partition.Uuid,
		partFuture.Partition.Device,
		true,
		filepath.Join("/var/lib/abroot/etc", partPresent.Label),
	)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.02, err)
		return err
	}

	generatedGrubConfigPath := "/boot/grub/grub.cfg"

	err = chroot.ExecuteCmds(
		[]string{
			"grub-mkconfig -o " + generatedGrubConfigPath,
		},
	)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.1, err)
		return err
	}

	preExec := settings.Cnf.IPkgMngPre
	postExec := settings.Cnf.IPkgMngPost
	initramfsArgs := []string{}
	if preExec != "" {
		initramfsArgs = append(initramfsArgs, preExec)
	}
	initramfsArgs = append(initramfsArgs, "update-initramfs -u")
	if postExec != "" {
		initramfsArgs = append(initramfsArgs, postExec)
	}
	initramfsArgs = append(initramfsArgs, "exit")
	err = chroot.ExecuteCmds(initramfsArgs) // ensure initramfs is updated
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.2, err)
		return err
	}

	err = chroot.Close()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.25, err)
		return err
	}

	newKernelVer := getKernelVersion(filepath.Join(systemNew, "boot"))
	if newKernelVer == "" {
		err := errors.New("could not get kernel version")
		PrintVerboseErr("ABSystem.RunOperation", 7.26, err)
		return err
	}

	var rootUuid string
	// If Thin-Provisioning set, mount init partition and move linux and initrd
	// images to it.
	var initMountpoint string
	if settings.Cnf.ThinProvisioning {
		initPartition, err := s.RootM.GetInit()
		if err != nil {
			PrintVerboseErr("ABSystem.RunOperation", 7.3, err)
			return err
		}

		initMountpoint = filepath.Join(systemNew, "boot", "init")
		err = initPartition.Mount(initMountpoint)
		if err != nil {
			PrintVerboseErr("ABSystem.RunOperation", 7.4, err)
			return err
		}

		cq.Add(func(args ...interface{}) error {
			return initPartition.Unmount()
		}, nil, 80, &goodies.NoErrorHandler{}, false)

		err = CopyFile(
			filepath.Join(systemNew, "boot", "vmlinuz-"+newKernelVer),
			filepath.Join(initMountpoint, partFuture.Label, "vmlinuz-"+newKernelVer),
		)
		if err != nil {
			PrintVerboseErr("ABSystem.RunOperation", 7.5, err)
			return err
		}
		err = CopyFile(
			filepath.Join(systemNew, "boot", "initrd.img-"+newKernelVer),
			filepath.Join(initMountpoint, partFuture.Label, "initrd.img-"+newKernelVer),
		)
		if err != nil {
			PrintVerboseErr("ABSystem.RunOperation", 7.6, err)
			return err
		}

		os.Remove(filepath.Join(systemNew, "boot", "vmlinuz-"+newKernelVer))
		os.Remove(filepath.Join(systemNew, "boot", "initrd.img-"+newKernelVer))

		rootUuid = initPartition.Uuid
	} else {
		rootUuid = partFuture.Partition.Uuid
	}

	err = generateABGrubConf(
		newKernelVer,
		systemNew,
		rootUuid,
		partFuture.Label,
		generatedGrubConfigPath,
	)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.7, err)
		return err
	}

	// Create links back to the root system
	err = s.CreateRootSymlinks(systemNew)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7.8, err)
		return err
	}

	// Stage 7: Sync /etc
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 7] -------- ABSystemRunOperation")

	oldEtc := "/.system/sysconf" // The current etc WITHOUT anything overlayed
	presentEtc, err := s.RootM.GetPresent()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 8, err)
		return err
	}
	futureEtc, err := s.RootM.GetFuture()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 8.1, err)
		return err
	}
	oldUpperEtc := fmt.Sprintf("/var/lib/abroot/etc/%s", presentEtc.Label)
	newUpperEtc := fmt.Sprintf("/var/lib/abroot/etc/%s", futureEtc.Label)

	err = EtcBuilder.ExtBuildCommand(oldEtc, systemNew+"/sysconf", oldUpperEtc, newUpperEtc)
	if err != nil {
		PrintVerboseErr("AbSystem.RunOperation", 8.2, err)
		return err
	}

	// Stage 8: Mount boot partition
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 8] -------- ABSystemRunOperation")

	uuid := uuid.New().String()
	tmpBootMount := filepath.Join("/tmp", uuid)
	err = os.Mkdir(tmpBootMount, 0o755)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 9, err)
		return err
	}

	err = partBoot.Mount(tmpBootMount)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 9.1, err)
		return err
	}

	cq.Add(func(args ...interface{}) error {
		return partBoot.Unmount()
	}, nil, 100, &goodies.NoErrorHandler{}, false)

	// Stage 9: Atomic swap the rootfs and abimage.abr
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 9] -------- ABSystemRunOperation")

	err = AtomicSwap(systemOld, systemNew)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 10, err)
		return err
	}

	cq.Add(func(args ...interface{}) error {
		return os.RemoveAll(systemNew)
	}, nil, 20, &goodies.NoErrorHandler{}, false)

	oldABImage := filepath.Join(partFuture.Partition.MountPoint, "abimage.abr")
	newABImage := filepath.Join(partFuture.Partition.MountPoint, "abimage-new.abr")

	// PartFuture may not have /abimage.abr if it got corrupted or was wiped.
	// In these cases, create a dummy file for the atomic swap.
	if _, err = os.Stat(oldABImage); os.IsNotExist(err) {
		PrintVerboseInfo("ABSystem.RunOperation", "Creating dummy /part-future/abimage.abr")
		os.Create(oldABImage)
	}

	err = AtomicSwap(oldABImage, newABImage)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 10.1, err)
		return err
	}

	cq.Add(func(args ...interface{}) error {
		return os.RemoveAll(newABImage)
	}, nil, 30, &goodies.NoErrorHandler{}, false)

	// Stage 10: Atomic swap the bootloader
	// ------------------------------------------------
	PrintVerboseSimple("[Stage 10] -------- ABSystemRunOperation")

	grub, err := NewGrub(partBoot)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 11, err)
		return err
	}

	// Only swap grub entries if we're booted into the present partition
	isPresent, err := grub.IsBootedIntoPresentRoot()
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 11.1, err)
		return err
	}
	if isPresent {
		grubCfgCurrent := filepath.Join(tmpBootMount, "grub/grub.cfg")
		grubCfgFuture := filepath.Join(tmpBootMount, "grub/grub.cfg.future")

		// Just like in Stage 9, tmpBootMount/grub/grub.cfg.future may not exist.
		if _, err = os.Stat(grubCfgFuture); os.IsNotExist(err) {
			PrintVerboseInfo("ABSystem.RunOperation", "Creating grub.cfg.future")

			grubCfgContents, err := os.ReadFile(grubCfgCurrent)
			if err != nil {
				PrintVerboseErr("ABSystem.RunOperation", 11.2, err)
			}

			var replacerPairs []string
			if grub.FutureRoot == "a" {
				replacerPairs = []string{
					"default=1", "default=0",
					"Previous State (A)", "Current State (A)",
					"Current State (B)", "Previous State (B)",
				}
			} else {
				replacerPairs = []string{
					"default=0", "default=1",
					"Current State (A)", "Previous State (A)",
					"Previous State (B)", "Current State (B)",
				}
			}

			replacer := strings.NewReplacer(replacerPairs...)
			os.WriteFile(grubCfgFuture, []byte(replacer.Replace(string(grubCfgContents))), 0o644)
		}

		err = AtomicSwap(grubCfgCurrent, grubCfgFuture)
		if err != nil {
			PrintVerboseErr("ABSystem.RunOperation", 11.3, err)
			return err
		}
	}

	// Stage 11: Cleanup old kernel images
	// ------------------------------------------------
	// If Thin-Provisioning set, we have to remove the old kernel images
	// from the init partition since it is too small to hold multiple kernels.
	// This step runs as the last one to ensure the whole transaction is
	// successful before removing the old kernels.
	if settings.Cnf.ThinProvisioning {
		switch operation {
		case DRY_RUN_UPGRADE, DRY_RUN_APPLY, DRY_RUN_INITRAMFS:
		default:
			PrintVerboseSimple("[Stage 11] -------- ABSystemRunOperation")

			// since we did the swap, the init partition is now mounted in
			// .system instead of .system.new, so we need to update the path
			// before proceeding
			systemNew := filepath.Join(partFuture.Partition.MountPoint, ".system")
			initMountpoint = filepath.Join(systemNew, "boot", "init")

			err = cleanupOldKernels(newKernelVer, initMountpoint, partFuture.Label)
			if err != nil {
				PrintVerboseErr("ABSystem.RunOperation", 12, err)
				return err
			}
		}
	}

	PrintVerboseInfo("ABSystem.RunOperation", "upgrade completed")
	return nil
}

{
	PrintVerboseInfo("ABSystem.Rollback", "starting")

	cq := goodies.NewCleanupQueue()
	defer cq.Run()

	// we won't allow upgrades while rolling back
	if !checkOnly {
		err = s.LockUpgrade()
		if err != nil {
			PrintVerboseErr("ABSystem.Rollback", 0, err)
			return ROLLBACK_FAILED, err
		}
	}

	partBoot, err := s.RootM.GetBoot()
	if err != nil {
		PrintVerboseErr("ABSystem.Rollback", 1, err)
		return ROLLBACK_FAILED, err
	}

	uuid := uuid.New().String()
	tmpBootMount := filepath.Join("/tmp", uuid)
	err = os.Mkdir(tmpBootMount, 0o755)
	if err != nil {
		PrintVerboseErr("ABSystem.Rollback", 2, err)
		return ROLLBACK_FAILED, err
	}

	err = partBoot.Mount(tmpBootMount)
	if err != nil {
		PrintVerboseErr("ABSystem.Rollback", 3, err)
		return ROLLBACK_FAILED, err
	}

	cq.Add(func(args ...interface{}) error {
		return partBoot.Unmount()
	}, nil, 100, &goodies.NoErrorHandler{}, false)

	grub, err := NewGrub(partBoot)
	if err != nil {
		PrintVerboseErr("ABSystem.Rollback", 4, err)
		return ROLLBACK_FAILED, err
	}

	// Only swap grub entries if we're booted into the present partition
	isPresent, err := grub.IsBootedIntoPresentRoot()
	if err != nil {
		PrintVerboseErr("ABSystem.Rollback", 5, err)
		return ROLLBACK_FAILED, err
	}

	// If checkOnly is true, we stop here and return the appropriate response
	if checkOnly {
		response = ROLLBACK_RES_YES
		if isPresent {
			response = ROLLBACK_RES_NO
		}
		return response, nil
	}

	if isPresent {
		PrintVerboseInfo("ABSystem.Rollback", "current root is the default, nothing to do")
		return ROLLBACK_UNNECESSARY, nil
	}

	grubCfgCurrent := filepath.Join(tmpBootMount, "grub/grub.cfg")
	grubCfgFuture := filepath.Join(tmpBootMount, "grub/grub.cfg.future")

	// Just like in Stage 9, tmpBootMount/grub/grub.cfg.future may not exist.
	if _, err = os.Stat(grubCfgFuture); os.IsNotExist(err) {
		PrintVerboseInfo("ABSystem.Rollback", "Creating grub.cfg.future")

		grubCfgContents, err := os.ReadFile(grubCfgCurrent)
		if err != nil {
			PrintVerboseErr("ABSystem.Rollback", 6, err)
		}

		var replacerPairs []string
		if grub.FutureRoot == "a" {
			replacerPairs = []string{
				"default=1", "default=0",
				"A (previous)", "A (current)",
				"B (current)", "B (previous)",
			}
		} else {
			replacerPairs = []string{
				"default=0", "default=1",
				"A (current)", "A (previous)",
				"B (previous)", "B (current)",
			}
		}

		replacer := strings.NewReplacer(replacerPairs...)
		os.WriteFile(grubCfgFuture, []byte(replacer.Replace(string(grubCfgContents))), 0o644)
	}

	err = AtomicSwap(grubCfgCurrent, grubCfgFuture)
	if err != nil {
		PrintVerboseErr("ABSystem.RunOperation", 7, err)
		return ROLLBACK_FAILED, err
	}

	PrintVerboseInfo("ABSystem.Rollback", "rollback completed")
	return ROLLBACK_SUCCESS, nil
}

{
	if _, err := os.Stat(userLockFile); os.IsNotExist(err) {
		return false
	}

	PrintVerboseInfo("ABSystem.UserLockRequested", "lock file exists")
	return true
}

{
	if _, err := os.Stat(lockFile); os.IsNotExist(err) {
		return false
	}

	PrintVerboseInfo("ABSystem.UpgradeLockExists", "lock file exists")
	return true
}

{
	_, err := os.Create(lockFile)
	if err != nil {
		PrintVerboseErr("ABSystem.LockUpgrade", 0, err)
		return err
	}

	PrintVerboseInfo("ABSystem.LockUpgrade", "lock file created")
	return nil
}

{
	err := os.Remove(lockFile)
	if err != nil {
		PrintVerboseErr("ABSystem.UnlockUpgrade", 0, err)
		return err
	}

	PrintVerboseInfo("ABSystem.UnlockUpgrade", "lock file removed")
	return nil
}

{
	_, err := os.Create(stageFile)
	if err != nil {
		PrintVerboseErr("ABSystem.CreateStageFile", 0, err)
		return err
	}

	PrintVerboseInfo("ABSystem.CreateStageFile", "stage file created")
	return nil
}

{
	err := os.Remove(stageFile)
	if err != nil {
		PrintVerboseErr("ABSystem.RemoveStageFile", 0, err)
		return err
	}

	PrintVerboseInfo("ABSystem.RemoveStageFile", "stage file removed")
	return nil
}

{
	PrintVerboseInfo("Grub.IsBootedIntoPresentRoot", "running...")

	a := NewABRootManager()
	future, err := a.GetFuture()
	if err != nil {
		return false, err
	}

	if g.FutureRoot == "a" {
		PrintVerboseInfo("Grub.IsBootedIntoPresentRoot", "done")
		return future.Label == settings.Cnf.PartLabelA, nil
	} else {
		PrintVerboseInfo("Grub.IsBootedIntoPresentRoot", "done")
		return future.Label == settings.Cnf.PartLabelB, nil
	}
}

{
	PrintVerboseInfo("ImageRecipe.Write", "running...")

	// create file
	file, err := os.Create(path)
	if err != nil {
		PrintVerboseErr("ImageRecipe.Write", 0, err)
		return err
	}
	defer file.Close()

	// write from
	_, err = file.WriteString(fmt.Sprintf("FROM %s\n", c.From))
	if err != nil {
		PrintVerboseErr("ImageRecipe.Write", 1, err)
		return err
	}

	// write labels
	for key, value := range c.Labels {
		_, err = file.WriteString(fmt.Sprintf("LABEL %s=%s\n", key, value))
		if err != nil {
			PrintVerboseErr("ImageRecipe.Write", 2, err)
			return err
		}
	}

	// write args
	for key, value := range c.Args {
		_, err = file.WriteString(fmt.Sprintf("ARG %s=%s\n", key, value))
		if err != nil {
			PrintVerboseErr("ImageRecipe.Write", 3, err)
			return err
		}
	}

	// write content
	_, err = file.WriteString(c.Content)
	if err != nil {
		PrintVerboseErr("ImageRecipe.Write", 4, err)
		return err
	}

	PrintVerboseInfo("ImageRecipe.Write", "done")
	return nil
}