cmd/irdump: formatted disassembly

Packaging nodejs and ruby is an immense burden for the Rosa OS base system, and these files diff poorly.

Signed-off-by: Ophestra <cat@gensokyo.uk>

.gitignore

@@ -7,12 +7,9 @@
 
 # go generate
 /cmd/hakurei/LICENSE
-/cmd/mbf/internal/pkgserver/ui/static
-/internal/pkg/internal/testtool/testtool
+/cmd/pkgserver/ui/static/*.js
+/internal/pkg/testdata/testtool
 /internal/rosa/hakurei_current.tar.gz
 
 # cmd/dist default destination
 /dist
-
-# local packages
-/internal/rosa/package/local

all.sh

@@ -1,3 +1,6 @@
 #!/bin/sh -e
 
-HAKUREI_DIST_MAKE='' exec "$(dirname -- "$0")/cmd/dist/dist.sh"
+TOOLCHAIN_VERSION="$(go version)"
+cd "$(dirname -- "$0")/"
+echo "# Building cmd/dist using ${TOOLCHAIN_VERSION}."
+go run -v --tags=dist ./cmd/dist

check/absolute.go

@@ -20,8 +20,8 @@ func (e AbsoluteError) Error() string {
 }
 
 func (e AbsoluteError) Is(target error) bool {
-	ce, ok := errors.AsType[AbsoluteError](target)
-	if !ok {
+	var ce AbsoluteError
+	if !errors.As(target, &ce) {
 		return errors.Is(target, syscall.EINVAL)
 	}
 	return e == ce
@@ -31,8 +31,6 @@ func (e AbsoluteError) Is(target error) bool {
 type Absolute struct{ pathname unique.Handle[string] }
 
 var (
-	_ fmt.GoStringer = new(Absolute)
-
 	_ encoding.TextAppender    = new(Absolute)
 	_ encoding.TextMarshaler   = new(Absolute)
 	_ encoding.TextUnmarshaler = new(Absolute)
@@ -42,10 +40,6 @@ var (
 	_ encoding.BinaryUnmarshaler = new(Absolute)
 )
 
-func (a *Absolute) GoString() string {
-	return fmt.Sprintf("check.MustAbs(%q)", a.String())
-}
-
 // ok returns whether [Absolute] is not the zero value.
 func (a *Absolute) ok() bool { return a != nil && *a != (Absolute{}) }
 

check/overlay.go

@@ -4,23 +4,15 @@ import "strings"
 
 const (
 	// SpecialOverlayEscape is the escape string for overlay mount options.
-	//
-	// Deprecated: This is no longer used and will be removed in 0.5.
 	SpecialOverlayEscape = `\`
 	// SpecialOverlayOption is the separator string between overlay mount options.
-	//
-	// Deprecated: This is no longer used and will be removed in 0.5.
 	SpecialOverlayOption = ","
 	// SpecialOverlayPath is the separator string between overlay paths.
-	//
-	// Deprecated: This is no longer used and will be removed in 0.5.
 	SpecialOverlayPath = ":"
 )
 
 // EscapeOverlayDataSegment escapes a string for formatting into the data
 // argument of an overlay mount system call.
-//
-// Deprecated: This is no longer used and will be removed in 0.5.
 func EscapeOverlayDataSegment(s string) string {
 	if s == "" {
 		return ""

cmd/app/app.go

@@ -1,264 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"strconv"
-	"strings"
-
-	"hakurei.app/check"
-	"hakurei.app/fhs"
-	"hakurei.app/hst"
-)
-
-// parsePair parses a NUL-delimited quoted paths pair.
-func parsePair(s string) (source, target *check.Absolute, err error) {
-	var p string
-	if p, err = strconv.Unquote(s); err != nil {
-		return
-	}
-	_source, _target, ok := strings.Cut(p, "\x00")
-	if source, err = check.NewAbs(_source); err != nil {
-		return
-	}
-	if !ok {
-		return
-	}
-	target, err = check.NewAbs(_target)
-	return
-}
-
-// parse decodes a high-level configuration stream and returns its
-// corresponding [hst.Config].
-func parse(id string, base *check.Absolute, r io.Reader) (*hst.Config, error) {
-	shell := fhs.AbsRoot.Append("bin", "zsh")
-	home := hst.AbsPrivateTmp.Append("home")
-
-	c := hst.Config{
-		ID:          id,
-		Enablements: new(hst.Enablements),
-
-		SessionBus: &hst.BusConfig{
-			Own: []string{
-				id + ".*",
-				"org.mpris.MediaPlayer2." + id + ".*",
-			},
-			Filter: true,
-		},
-		SystemBus: &hst.BusConfig{Filter: true},
-
-		Container: &hst.ContainerConfig{
-			Env: make(map[string]string),
-			Filesystem: []hst.FilesystemConfigJSON{
-				{FilesystemConfig: &hst.FSOverlay{
-					Target: fhs.AbsRoot,
-					Lower: []*check.Absolute{
-						base.Append("template", "initial"),
-					},
-					Upper: base.Append("template", "upper"),
-				}},
-				{FilesystemConfig: &hst.FSBind{
-					Target: home,
-					Source: base.Append("state", id),
-					Write:  true,
-					Ensure: true,
-				}},
-
-				{FilesystemConfig: &hst.FSEphemeral{
-					Target: fhs.AbsVar.Append("tmp"),
-					Write:  true,
-					Perm:   01777,
-				}},
-
-				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("block")}},
-				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("bus")}},
-				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("class")}},
-				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("dev")}},
-				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("devices")}},
-			},
-
-			Username: "chronos",
-			Shell:    shell,
-			Home:     home,
-			Path:     shell,
-			Args:     []string{"zsh", "-c"},
-
-			Flags: hst.FCoverRun,
-		},
-	}
-
-	s := bufio.NewScanner(r)
-	scanOnce := func() error {
-		if s.Scan() {
-			return nil
-		}
-		if err := s.Err(); err != nil {
-			return err
-		}
-		return io.ErrUnexpectedEOF
-	}
-
-	if err := scanOnce(); err != nil {
-		return nil, err
-	}
-	if v, err := strconv.Atoi(s.Text()); err != nil {
-		return nil, err
-	} else {
-		c.Identity = v
-	}
-
-	if err := scanOnce(); err != nil {
-		return nil, err
-	}
-	c.Container.Args = append(c.Container.Args, s.Text())
-
-	var flagGPU, flagSystemBus bool
-	flags := map[string]*bool{
-		"gpu":        &flagGPU,
-		"system_bus": &flagSystemBus,
-	}
-
-	for s.Scan() {
-		key, value, ok := strings.Cut(s.Text(), " ")
-		if key != "" && key[0] == ';' {
-			continue
-		}
-
-		if !ok {
-			if key == "" {
-				continue
-			}
-
-			var p *bool
-			if p, ok = flags[key]; ok {
-				*p = true
-				continue
-			}
-
-			switch key {
-			case "wayland":
-				*c.Enablements |= hst.EWayland
-			case "x11":
-				*c.Enablements |= hst.EX11
-			case "dbus":
-				*c.Enablements |= hst.EDBus
-			case "pipewire":
-				*c.Enablements |= hst.EPipeWire
-
-			case "multiarch":
-				c.Container.Flags |= hst.FMultiarch
-			case "devel":
-				c.Container.Flags |= hst.FDevel
-			case "userns":
-				c.Container.Flags |= hst.FUserns
-			case "net":
-				c.Container.Flags |= hst.FHostNet
-			case "abstract":
-				c.Container.Flags |= hst.FHostAbstract
-			case "tty":
-				c.Container.Flags |= hst.FTty
-			case "mapuid":
-				c.Container.Flags |= hst.FMapRealUID
-			case "device":
-				c.Container.Flags |= hst.FDevice
-
-			case "share_runtime":
-				c.Container.Flags |= hst.FShareRuntime
-			case "share_tmpdir":
-				c.Container.Flags |= hst.FShareTmpdir
-
-			default:
-				return nil, fmt.Errorf("invalid flag %q", key)
-			}
-
-			continue
-		}
-
-		switch key {
-		case "group":
-			c.Groups = append(c.Groups, value)
-			continue
-
-		case "env":
-			if key, value, ok = strings.Cut(value, "="); !ok {
-				return nil, fmt.Errorf("invalid environment %q", key)
-			}
-			c.Container.Env[key] = value
-			continue
-
-		case "ro":
-			source, target, err := parsePair(value)
-			if err != nil {
-				return nil, err
-			}
-			c.Container.Filesystem = append(c.Container.Filesystem,
-				hst.FilesystemConfigJSON{FilesystemConfig: &hst.FSBind{
-					Target: target,
-					Source: source,
-				}},
-			)
-			continue
-
-		case "rw":
-			source, target, err := parsePair(value)
-			if err != nil {
-				return nil, err
-			}
-			c.Container.Filesystem = append(c.Container.Filesystem,
-				hst.FilesystemConfigJSON{FilesystemConfig: &hst.FSBind{
-					Target: target,
-					Source: source,
-					Write:  true,
-				}},
-			)
-			continue
-
-		case "own":
-			c.SessionBus.Own = append(c.SessionBus.Own, value)
-			continue
-		case "own_system":
-			c.SystemBus.Own = append(c.SystemBus.Own, value)
-			continue
-
-		case "talk":
-			c.SessionBus.Talk = append(c.SessionBus.Talk, value)
-			continue
-		case "talk_system":
-			c.SystemBus.Talk = append(c.SystemBus.Talk, value)
-			continue
-
-		default:
-			return nil, fmt.Errorf("invalid key %q", key)
-		}
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-
-	if flagGPU {
-		c.Container.Filesystem = append(c.Container.Filesystem, []hst.FilesystemConfigJSON{
-			{FilesystemConfig: &hst.FSBind{
-				Source:   fhs.AbsDev.Append("dri"),
-				Device:   true,
-				Optional: true,
-			}},
-		}...)
-	}
-
-	if !flagSystemBus {
-		c.SystemBus = nil
-	}
-
-	if c.Container.Flags&hst.FShareTmpdir == 0 {
-		c.Container.Filesystem = append(c.Container.Filesystem,
-			hst.FilesystemConfigJSON{FilesystemConfig: &hst.FSEphemeral{
-				Target: fhs.AbsTmp,
-				Write:  true,
-				Perm:   01777,
-			}},
-		)
-	}
-
-	return &c, nil
-}

cmd/app/app_test.go

@@ -1,152 +0,0 @@
-package main
-
-import (
-	"reflect"
-	"strings"
-	"testing"
-
-	"hakurei.app/check"
-	"hakurei.app/fhs"
-	"hakurei.app/hst"
-)
-
-func TestParse(t *testing.T) {
-	t.Parallel()
-
-	base := fhs.AbsProc.Append("nonexistent")
-	testCases := []struct {
-		name string
-		data string
-		want *hst.Config
-		err  error
-	}{
-		{"com.discordapp.Discord", `8
-exec Discord --ozone-platform-hint=wayland
-
-gpu
-wayland
-dbus
-system_bus
-pipewire
-userns
-net
-mapuid
-
-share_runtime
-share_tmpdir
-
-group media_rw
-env ELECTRON_TRASH=gio
-rw "/sdcard"
-; remove before reusing
-ro "/bin\x00/.hakurei/bin"
-
-talk org.kde.StatusNotifierWatcher
-talk com.canonical.AppMenu.Registrar
-talk com.canonical.indicator.application
-talk com.canonical.Unity
-`, &hst.Config{
-			Identity:    8,
-			ID:          "com.discordapp.Discord",
-			Enablements: new(hst.EWayland | hst.EDBus | hst.EPipeWire),
-			Groups:      []string{"media_rw"},
-
-			SessionBus: &hst.BusConfig{
-				Talk: []string{
-					"org.kde.StatusNotifierWatcher",
-					"com.canonical.AppMenu.Registrar",
-					"com.canonical.indicator.application",
-					"com.canonical.Unity",
-				},
-				Own: []string{
-					"com.discordapp.Discord.*",
-					"org.mpris.MediaPlayer2.com.discordapp.Discord.*",
-				},
-				Filter: true,
-			},
-			SystemBus: &hst.BusConfig{Filter: true},
-
-			Container: &hst.ContainerConfig{
-				Env: map[string]string{
-					"ELECTRON_TRASH": "gio",
-				},
-				Filesystem: []hst.FilesystemConfigJSON{
-					{FilesystemConfig: &hst.FSOverlay{
-						Target: fhs.AbsRoot,
-						Lower: []*check.Absolute{
-							base.Append("template", "initial"),
-						},
-						Upper: base.Append("template", "upper"),
-					}},
-					{FilesystemConfig: &hst.FSBind{
-						Target: hst.AbsPrivateTmp.Append("home"),
-						Source: base.Append("state", "com.discordapp.Discord"),
-						Write:  true,
-						Ensure: true,
-					}},
-
-					{FilesystemConfig: &hst.FSEphemeral{
-						Target: fhs.AbsVar.Append("tmp"),
-						Write:  true,
-						Perm:   01777,
-					}},
-
-					{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("block")}},
-					{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("bus")}},
-					{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("class")}},
-					{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("dev")}},
-					{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("devices")}},
-
-					{FilesystemConfig: &hst.FSBind{
-						Source: check.MustAbs("/sdcard"),
-						Write:  true,
-					}},
-					{FilesystemConfig: &hst.FSBind{
-						Target: check.MustAbs("/.hakurei/bin"),
-						Source: check.MustAbs("/bin"),
-					}},
-
-					{FilesystemConfig: &hst.FSBind{
-						Source:   fhs.AbsDev.Append("dri"),
-						Device:   true,
-						Optional: true,
-					}},
-				},
-
-				Username: "chronos",
-				Shell:    fhs.AbsRoot.Append("bin", "zsh"),
-				Home:     hst.AbsPrivateTmp.Append("home"),
-				Path:     fhs.AbsRoot.Append("bin", "zsh"),
-				Args: []string{
-					"zsh", "-c",
-					"exec Discord --ozone-platform-hint=wayland",
-				},
-
-				Flags: hst.FCoverRun | hst.FUserns | hst.FHostNet | hst.FMapRealUID |
-					hst.FShareRuntime | hst.FShareTmpdir,
-			},
-		}, nil},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			t.Parallel()
-
-			got, err := parse(
-				tc.name,
-				base,
-				strings.NewReader(tc.data),
-			)
-
-			if !reflect.DeepEqual(err, tc.err) {
-				t.Errorf("parse: error = %v, want %v", err, tc.err)
-			}
-			if err != nil {
-				return
-			}
-
-			if !reflect.DeepEqual(got, tc.want) {
-				t.Errorf("parse: %#v, want %#v", got, tc.want)
-			}
-		})
-	}
-}

cmd/app/main.go

@@ -1,170 +0,0 @@
-// The app program is a proof-of-concept frontend for cmd/hakurei.
-//
-// This program is not covered by the compatibility promise. The command line
-// interface and configuration syntax may change at any time.
-package main
-
-import (
-	"context"
-	"errors"
-	"log"
-	"os"
-	"os/exec"
-	"os/signal"
-	"path/filepath"
-	"syscall"
-
-	"hakurei.app/check"
-	"hakurei.app/command"
-	"hakurei.app/fhs"
-	"hakurei.app/hst"
-	"hakurei.app/message"
-)
-
-func main() {
-	log.SetFlags(0)
-	log.SetPrefix("app: ")
-	msg := message.New(log.Default())
-
-	ctx, stop := signal.NotifyContext(context.Background(),
-		syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
-	defer stop()
-
-	var (
-		flagVerbose bool
-		flagBase    string
-
-		base, template, initial, upper, work *check.Absolute
-	)
-	c := command.New(os.Stderr, log.Printf, "app", func([]string) (err error) {
-		msg.SwapVerbose(flagVerbose)
-		flagBase = os.ExpandEnv(flagBase)
-		if flagBase == "" {
-			flagBase = "state"
-		}
-		if flagBase, err = filepath.Abs(flagBase); err != nil {
-			return
-		} else if base, err = check.NewAbs(flagBase); err != nil {
-			return
-		}
-
-		template = base.Append("template")
-		initial = template.Append("initial")
-		upper = template.Append("upper")
-		work = template.Append("work")
-		return
-	}).Flag(
-		&flagVerbose,
-		"v", command.BoolFlag(false),
-		"Increase log verbosity",
-	).Flag(
-		&flagBase,
-		"d", command.StringFlag("$HAKUREI_APP_PATH"),
-		"Configuration and state directory",
-	)
-
-	{
-		var (
-			flagShell string
-			flagHome  string
-		)
-		c.NewCommand(
-			"enter", "Enter mutable state template",
-			func([]string) error {
-				config := hst.Config{
-					ID: "app.hakurei.mutable",
-					Container: &hst.ContainerConfig{
-						Hostname: "mutable",
-						Filesystem: []hst.FilesystemConfigJSON{
-							{FilesystemConfig: &hst.FSOverlay{
-								Target: fhs.AbsRoot,
-								Lower:  []*check.Absolute{initial},
-								Upper:  upper,
-								Work:   work,
-							}},
-							{FilesystemConfig: &hst.FSEphemeral{
-								Target: fhs.AbsTmp,
-								Write:  true,
-								Perm:   0755,
-							}},
-						},
-						Username: "chronos",
-						Flags: hst.FMultiarch |
-							hst.FDevel |
-							hst.FUserns |
-							hst.FHostNet |
-							hst.FTty,
-					},
-				}
-
-				if a, err := check.NewAbs(flagShell); err != nil {
-					return err
-				} else {
-					config.Container.Shell = a
-					config.Container.Path = a
-					config.Container.Args = []string{
-						"-" + filepath.Base(flagShell),
-					}
-				}
-
-				if a, err := check.NewAbs(flagHome); err != nil {
-					return err
-				} else {
-					config.Container.Home = a
-				}
-
-				return run(ctx, msg, &config)
-			},
-		).Flag(
-			&flagShell,
-			"shell", command.StringFlag("/bin/zsh"),
-			"Shell program within container",
-		).Flag(
-			&flagHome,
-			"home", command.StringFlag("/home/chronos"),
-			"Home directory within container",
-		)
-	}
-
-	c.NewCommand(
-		"run", "Start the named application",
-		func(args []string) error {
-			if len(args) != 1 {
-				return errors.New("run requires 1 argument")
-			}
-
-			var config *hst.Config
-			f, err := os.Open(base.Append("app", args[0]).String())
-			if err != nil {
-				return err
-			}
-			config, err = parse(args[0], base, f)
-			if closeErr := f.Close(); err == nil {
-				err = closeErr
-			}
-			if err != nil {
-				return err
-			}
-
-			return run(ctx, msg, config)
-		},
-	)
-
-	c.MustParse(os.Args[1:], func(err error) {
-		if e, ok := errors.AsType[*exec.ExitError](err); ok && e != nil {
-			os.Exit(e.ExitCode())
-		}
-
-		if w, ok := err.(interface{ Unwrap() []error }); !ok {
-			log.Fatal(err)
-		} else {
-			errs := w.Unwrap()
-			for i, e := range errs {
-				if i == len(errs)-1 {
-					log.Fatal(e)
-				}
-				log.Println(e)
-			}
-		}
-	})
-}

cmd/app/run.go

@@ -1,51 +0,0 @@
-package main
-
-import (
-	"context"
-	"encoding/json"
-	"os"
-	"os/exec"
-	"syscall"
-
-	"hakurei.app/hst"
-	"hakurei.app/message"
-)
-
-// run starts a container via cmd/hakurei and returns after it terminates.
-func run(ctx context.Context, msg message.Msg, config *hst.Config) error {
-	c, cancel := context.WithCancel(ctx)
-	defer cancel()
-
-	cmd := exec.CommandContext(c, "hakurei")
-	cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
-	cmd.Cancel = func() error {
-		return cmd.Process.Signal(syscall.SIGINT)
-	}
-	if msg.IsVerbose() {
-		cmd.Args = append(cmd.Args, "-v")
-	}
-	cmd.Args = append(cmd.Args, "run", "3")
-
-	r, w, err := os.Pipe()
-	if err != nil {
-		return err
-	}
-	cmd.ExtraFiles = append(cmd.ExtraFiles, r)
-
-	if err = cmd.Start(); err != nil {
-		_, _ = r.Close(), w.Close()
-		return err
-	}
-
-	if err = r.Close(); err != nil {
-		_ = w.Close()
-		return err
-	} else if err = json.NewEncoder(w).Encode(&config); err != nil {
-		_ = w.Close()
-		return err
-	} else if err = w.Close(); err != nil {
-		return err
-	}
-
-	return cmd.Wait()
-}

cmd/dist/VERSION

@@ -1 +0,0 @@
-v0.4.3

cmd/dist/dist.sh

@@ -1,10 +0,0 @@
-#!/bin/sh -e
-
-TOOLCHAIN_VERSION="$(go version)"
-cd "$(dirname -- "$0")/../.."
-echo "Building cmd/dist using ${TOOLCHAIN_VERSION}."
-FLAGS=''
-if test -n "$VERBOSE"; then
-    FLAGS="$FLAGS -v"
-fi
-go run $FLAGS --tags=dist ./cmd/dist

cmd/dist/main.go

@@ -18,13 +18,8 @@ import (
 	"os/signal"
 	"path/filepath"
 	"runtime"
-	"strings"
 )
 
-//go:generate sh -c "git describe --tags > VERSION"
-//go:embed VERSION
-var version string
-
 // getenv looks up an environment variable, and returns fallback if it is unset.
 func getenv(key, fallback string) string {
 	if v, ok := os.LookupEnv(key); ok {
@@ -47,19 +42,14 @@ func mustRun(ctx context.Context, name string, arg ...string) {
 var comp []byte
 
 func main() {
+	fmt.Println()
 	log.SetFlags(0)
-	log.SetPrefix("")
+	log.SetPrefix("# ")
 
-	verbose := os.Getenv("VERBOSE") != ""
-	runTests := os.Getenv("HAKUREI_DIST_MAKE") == ""
-	version = getenv("HAKUREI_VERSION", strings.TrimSpace(version))
+	version := getenv("HAKUREI_VERSION", "untagged")
 	prefix := getenv("PREFIX", "/usr")
 	destdir := getenv("DESTDIR", "dist")
 
-	if verbose {
-		log.Println()
-	}
-
 	if err := os.MkdirAll(destdir, 0755); err != nil {
 		log.Fatal(err)
 	}
@@ -86,17 +76,12 @@ func main() {
 	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
 	defer cancel()
 
-	verboseFlag := "-v"
-	if !verbose {
-		verboseFlag = "-buildvcs=false"
-	}
-
-	log.Printf("Building hakurei for %s/%s.", runtime.GOOS, runtime.GOARCH)
+	log.Println("Building hakurei.")
 	mustRun(ctx, "go", "generate", "./...")
 	mustRun(
 		ctx, "go", "build",
 		"-trimpath",
-		verboseFlag, "-o", s,
+		"-v", "-o", s,
 		"-ldflags=-s -w "+
 			"-buildid= -linkmode external -extldflags=-static "+
 			"-X hakurei.app/internal/info.buildVersion="+version+" "+
@@ -105,19 +90,17 @@ func main() {
 			"-X main.hakureiPath="+prefix+"/bin/hakurei",
 		"./...",
 	)
-	log.Println()
+	fmt.Println()
 
-	if runTests {
-		log.Println("##### Testing Hakurei.")
-		mustRun(
-			ctx, "go", "test",
-			"-ldflags=-buildid= -linkmode external -extldflags=-static",
-			"./...",
-		)
-		log.Println()
-	}
+	log.Println("Testing Hakurei.")
+	mustRun(
+		ctx, "go", "test",
+		"-ldflags=-buildid= -linkmode external -extldflags=-static",
+		"./...",
+	)
+	fmt.Println()
 
-	log.Println("##### Creating distribution.")
+	log.Println("Creating distribution.")
 	const suffix = ".tar.gz"
 	distName := "hakurei-" + version + "-" + runtime.GOARCH
 	var f *os.File
@@ -138,7 +121,7 @@ func main() {
 	}()
 
 	h := sha512.New()
-	gw, _ := gzip.NewWriterLevel(io.MultiWriter(f, h), gzip.BestCompression)
+	gw := gzip.NewWriter(io.MultiWriter(f, h))
 	tw := tar.NewWriter(gw)
 
 	mustWriteHeader := func(name string, size int64, mode os.FileMode) {

cmd/earlyinit/main.go

@@ -5,91 +5,17 @@
 package main
 
 import (
-	"context"
-	"crypto/rand"
 	"log"
 	"os"
-	"os/signal"
 	"runtime"
-	"runtime/pprof"
-	"slices"
 	"strings"
 	. "syscall"
-
-	"hakurei.app/internal/kobject"
-	"hakurei.app/internal/report"
-	"hakurei.app/internal/uevent"
-	"hakurei.app/message"
-)
-
-var r report.Reporter
-
-func init() {
-	log.SetFlags(0)
-	log.SetPrefix("earlyinit: ")
-	r.SetOutput(log.Default())
-
-	// this handles SIGQUIT to provide useful debugging information without
-	// terminating, and prevents the runtime from throwing on the must family
-	// of early error reporting functions, DO NOT REMOVE
-	c := make(chan os.Signal, 1)
-	signal.Notify(c, SIGQUIT)
-	go func() {
-		for {
-			<-c
-			if p := pprof.Lookup("goroutine"); p == nil {
-				log.Println("initial built-in goroutine profile does not exist")
-			} else if err := p.WriteTo(os.Stderr, 2); err != nil {
-				log.Println(err)
-			}
-		}
-	}()
-}
-
-// fatal calls [log.Println] with v and blocks forever. Must be called from
-// main. Must not be used after error reporting is set up.
-func fatal(v ...any) {
-	log.Println(v...)
-	log.Println("unable to continue, please reboot and resolve the problem manually")
-	select {}
-}
-
-// must calls fatal with err if it is non-nil.
-func must(err error) {
-	if err != nil {
-		log.Println(err)
-		select {}
-	}
-}
-
-// mustSyscall is like must, but with an additional action name.
-func mustSyscall(action string, err error) {
-	if err != nil {
-		fatal("cannot "+action+":", err)
-		select {}
-	}
-}
-
-// must1 is like must, but with an additional passed through value.
-func must1[T any](v T, err error) T {
-	must(err)
-	return v
-}
-
-const (
-	// optionSystem specifies devpath of the system device.
-	optionSystem = "system"
-
-	// flagVerbose increases output verbosity.
-	flagVerbose = "verbose"
-	// flagStrict sets [report.DStrict] on r.
-	flagStrict = "strict"
-	// flagNoRecover sets [report.DNoRecover] on r.
-	flagNoRecover = "no_recover"
 )
 
 func main() {
 	runtime.LockOSThread()
+	log.SetFlags(0)
+	log.SetPrefix("earlyinit: ")
 
 	var (
 		option map[string]string
@@ -107,44 +33,15 @@ func main() {
 		}
 	}
 
-	{
-		var flag uint64
-		if slices.Contains(flags, flagStrict) {
-			flag |= report.DStrict
-		}
-		if slices.Contains(flags, flagNoRecover) {
-			flag |= report.DNoRecover
-		}
-		log.Printf("reporting flags %x", flag)
-		r.SetFlags(flag)
-	}
-
-	msg := message.New(log.Default())
-	msg.SwapVerbose(slices.Contains(flags, flagVerbose))
-
-	mustSyscall("mount devtmpfs", Mount(
+	if err := Mount(
 		"devtmpfs",
 		"/dev/",
 		"devtmpfs",
 		MS_NOSUID|MS_NOEXEC,
 		"",
-	))
-	must(os.Mkdir("/dev/pts/", 0))
-	mustSyscall("mount devpts", Mount(
-		"devpts",
-		"/dev/pts/",
-		"devpts",
-		MS_NOSUID|MS_NOEXEC,
-		"mode=620,ptmxmode=666",
-	))
-	must(os.Mkdir("/dev/shm/", 0))
-	mustSyscall("mount shm", Mount(
-		"shm",
-		"/dev/shm/",
-		"tmpfs",
-		MS_NOSUID|MS_NODEV,
-		"",
-	))
+	); err != nil {
+		log.Fatalf("cannot mount devtmpfs: %v", err)
+	}
 
 	// The kernel might be unable to set up the console. When that happens,
 	// printk is called with "Warning: unable to open an initial console."
@@ -201,49 +98,6 @@ func main() {
 		"",
 	))
 
-	conn := must1(uevent.Dial(-128 * 1024 * 1024))
-	events := make(chan *uevent.Message, 1<<10)
-	var uuid uevent.UUID
-	must1(rand.Read(uuid[:]))
-	ctx, cancel := context.WithCancel(context.Background())
-
-	go consume(ctx, msg, &r, conn, uuid, events)
-	s := kobject.New(uuid, func(o *kobject.Object, env map[string]string) {
-		p := make([]string, 0, len(env))
-		for k, v := range env {
-			p = append(p, k+"="+v)
-		}
-		slices.Sort(p)
-		log.Printf("change %s: %s", o.DevPath, strings.Join(p, ", "))
-	}, func(err error) {
-		severity := report.Inconsistent
-		if e, ok := err.(kobject.EventError); ok && e.Kind == kobject.EBadTarget {
-			severity = report.Trivial
-		}
-		r.Dispatch(
-			severity,
-			"processed inconsistent uevent",
-			err,
-		)
-	})
-	go func() {
-		s.Consume(ctx, events)
-
-		log.Println("closing NETLINK_KOBJECT_UEVENT socket")
-		cancel()
-		if err := conn.Close(); err != nil {
-			log.Fatal(err) // not reached
-		}
-	}()
-
-	must(os.Mkdir("/system", 0))
-	if devpath := option[optionSystem]; devpath == "" {
-		fatal("system must be nonempty")
-	} else {
-		log.Printf("waiting for devpath pattern %q", devpath)
-		mustMountSystem(ctx, s, devpath)
-	}
-
 	// after top level has been set up
 	mustSyscall("remount root", Mount(
 		"",
@@ -259,6 +113,19 @@ func main() {
 		[]byte("/system/lib/firmware"),
 		0,
 	))
-	go dispatchModprobe(ctx, s)
 
 }
+
+// mustSyscall calls [log.Fatalln] if err is non-nil.
+func mustSyscall(action string, err error) {
+	if err != nil {
+		log.Fatalln("cannot "+action+":", err)
+	}
+}
+
+// must calls [log.Fatal] with err if it is non-nil.
+func must(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}

cmd/earlyinit/modprobe.go

@@ -1,73 +0,0 @@
-package main
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"log"
-	"os/exec"
-	"strings"
-
-	"hakurei.app/internal/kobject"
-	"hakurei.app/internal/report"
-	"hakurei.app/internal/uevent"
-)
-
-// ModprobeError describes an unsuccessful modprobe invocation.
-type ModprobeError struct {
-	ModAlias string `json:"modalias"`
-	Stdout   string `json:"stdout"`
-	Stderr   string `json:"stderr"`
-	ExitCode int    `json:"exit_code"`
-}
-
-var _ report.RepresentableError = ModprobeError{}
-
-func (ModprobeError) Representable() {}
-func (e ModprobeError) Error() string {
-	return fmt.Sprintf(
-		"modprobe exit status %d: %s",
-		e.ExitCode, strings.TrimSpace(e.Stderr),
-	)
-}
-
-// dispatchModprobe invokes modprobe for [uevent.KOBJ_ADD] events raising new
-// MODALIAS strings.
-func dispatchModprobe(
-	ctx context.Context,
-	s *kobject.State,
-) {
-	aliases := make(chan string, 1<<8)
-	go func() {
-		defer close(aliases)
-		s.Range(ctx, func(o *kobject.Object, act uevent.KobjectAction) bool {
-			if act == uevent.KOBJ_ADD && o.Driver == "" && o.ModAlias != "" {
-				aliases <- o.ModAlias
-			}
-			return true
-		})
-	}()
-
-	for alias := range aliases {
-		stdout, err := exec.Command("/system/sbin/modprobe", alias).Output()
-		if err == nil {
-			if len(stdout) > 0 {
-				log.Println(string(stdout))
-			}
-			continue
-		}
-
-		exitError, ok := errors.AsType[*exec.ExitError](err)
-		if !ok || exitError == nil {
-			r.Dispatch(report.Degraded, "invoke modprobe", err)
-			continue
-		}
-
-		r.Dispatch(report.Trivial, "load device driver", ModprobeError{
-			ModAlias: alias,
-			Stdout:   string(stdout),
-			Stderr:   string(exitError.Stderr),
-			ExitCode: exitError.ExitCode(),
-		})
-	}
-}

cmd/earlyinit/mount.go

@@ -1,71 +0,0 @@
-package main
-
-import (
-	"context"
-	"errors"
-	"os"
-	"path/filepath"
-	"strconv"
-	"syscall"
-	"time"
-
-	"hakurei.app/check"
-	"hakurei.app/fhs"
-	"hakurei.app/internal/kobject"
-	"hakurei.app/internal/uevent"
-)
-
-// mustMountSystem waits for and mounts a system device matching pattern.
-func mustMountSystem(
-	ctx context.Context,
-	s *kobject.State,
-	pattern string,
-) {
-	c, stop := context.WithTimeout(ctx, 30*time.Second)
-	defer stop()
-
-	for {
-		var matchErr error
-		var systemPath *check.Absolute
-		s.Range(c, func(o *kobject.Object, act uevent.KobjectAction) bool {
-			if (act != uevent.KOBJ_ADD && act != uevent.KOBJ_CHANGE) ||
-				o.Subsystem != "block" ||
-				o.Env["DEVTYPE"] != "disk" {
-				return true
-			}
-
-			if ok, err := filepath.Match(pattern, o.DevPath); err != nil {
-				matchErr = err
-				return false
-			} else if !ok {
-				return true
-			}
-
-			name, ok := o.Env["DEVNAME"]
-			if !ok {
-				return true
-			}
-			systemPath = fhs.AbsDev.Append(name)
-			return false
-		})
-		if c.Err() != nil {
-			fatal("devpath", strconv.Quote(pattern), "never appeared")
-		}
-		if matchErr != nil {
-			fatal("cannot match system devpath:", matchErr)
-		}
-		err := syscall.Mount(
-			systemPath.String(),
-			"/system/",
-			"squashfs",
-			0,
-			"threads=multi",
-		)
-		if err == nil {
-			break
-		}
-		if !errors.Is(err, os.ErrNotExist) {
-			fatal("cannot mount system:", err)
-		}
-	}
-}

cmd/earlyinit/uevent.go

@@ -1,104 +0,0 @@
-package main
-
-import (
-	"context"
-	"time"
-
-	"hakurei.app/fhs"
-	"hakurei.app/internal/report"
-	"hakurei.app/internal/uevent"
-	"hakurei.app/message"
-)
-
-// newRejectColdboot returns a function to be called on every subsequent pending
-// coldboot, and returns whether coldboot should proceed. Rejection is sticky.
-func newRejectColdboot() func() bool {
-	// one coldboot per five minutes, two consecutive coldboot
-	const (
-		coldbootInterval = 5 * time.Minute
-		coldbootBurst    = 2
-	)
-
-	done := make(chan struct{})
-	s := make(chan struct{}, coldbootBurst)
-	s <- struct{}{} // for early fault before reporting is ready
-	go func() {
-		t := time.NewTicker(coldbootInterval)
-		for {
-			select {
-			case <-done:
-				return
-
-			case <-t.C:
-				select {
-				case s <- struct{}{}:
-				default:
-				}
-			}
-		}
-	}()
-
-	return func() bool {
-		select {
-		case <-s:
-			return true
-
-		case <-done:
-			return false
-
-		default:
-			close(done)
-			return false
-		}
-	}
-}
-
-// consume continuously consumes events from conn with retries.
-func consume(
-	ctx context.Context,
-	msg message.Msg,
-	r *report.Reporter,
-	conn *uevent.Conn,
-	uuid uevent.UUID,
-	events chan<- *uevent.Message,
-) {
-	defer close(events)
-
-	nextColdboot := newRejectColdboot()
-	coldboot := true
-retry:
-	if dispatchErr := conn.Consume(ctx, fhs.Sys, &uuid, events, coldboot, func(path string) {
-		msg.Verbose("coldboot visited", path)
-	}, func(err error) bool {
-		if _, ok := err.(uevent.NeedsColdboot); ok && !nextColdboot() {
-			r.Dispatch(
-				report.Degraded,
-				"rejecting coldboot loop",
-				err,
-			)
-			return false
-		}
-		r.Dispatch(
-			report.Inconsistent,
-			"consumed invalid message",
-			err,
-		)
-		return true
-	}, nil); dispatchErr != nil {
-		if _, ok := dispatchErr.(uevent.Recoverable); !ok {
-			r.Dispatch(
-				report.Fatal,
-				"discontinuing uevent processing due to nonrecoverable error",
-				dispatchErr,
-			)
-			return
-		}
-
-		if _, ok := dispatchErr.(uevent.NeedsColdboot); ok {
-			// coldboot loop rejected by handler
-			coldboot = false
-		}
-
-		goto retry
-	}
-}

cmd/earlyinit/uevent_test.go

@@ -1,35 +0,0 @@
-package main
-
-import (
-	"testing"
-	"testing/synctest"
-	"time"
-)
-
-func TestRejectColdboot(t *testing.T) {
-	t.Parallel()
-
-	synctest.Test(t, func(t *testing.T) {
-		nextColdboot := newRejectColdboot()
-		want := func(want bool) {
-			if got := nextColdboot(); got != want {
-				t.Fatalf("nextColdboot: %v, want %v", got, want)
-			}
-		}
-
-		synctest.Wait()
-		want(true)
-		time.Sleep(time.Hour)
-		synctest.Wait()
-		want(true)
-		want(true)
-		time.Sleep(5 * time.Minute)
-		synctest.Wait()
-		want(true)
-		want(false)
-		time.Sleep(time.Hour)
-		synctest.Wait()
-		want(false)
-		want(false)
-	})
-}

cmd/hakurei/json.go

@@ -7,8 +7,7 @@ import (
 	"strconv"
 )
 
-// decodeJSON decodes json from r and stores it in v. A non-nil error results in
-// a call to fatal.
+// decodeJSON decodes json from r and stores it in v. A non-nil error results in a call to fatal.
 func decodeJSON(fatal func(v ...any), op string, r io.Reader, v any) {
 	err := json.NewDecoder(r).Decode(v)
 	if err == nil {
@@ -48,14 +47,14 @@ func encodeJSON(fatal func(v ...any), output io.Writer, short bool, v any) {
 	}
 
 	if err := encoder.Encode(v); err != nil {
-		if e, ok := errors.AsType[*json.MarshalerError](err); ok && e != nil {
+		var marshalerError *json.MarshalerError
+		if errors.As(err, &marshalerError) && marshalerError != nil {
 			// this likely indicates an implementation error in hst
-			fatal("cannot encode json for " + e.Type.String() + ": " + e.Err.Error())
+			fatal("cannot encode json for " + marshalerError.Type.String() + ": " + marshalerError.Err.Error())
 			return
 		}
 
-		// UnsupportedTypeError, UnsupportedValueError: incorrect usage, does
-		// not need to be handled
+		// UnsupportedTypeError, UnsupportedValueError: incorrect usage, does not need to be handled
 		fatal("cannot write json: " + err.Error())
 	}
 }

cmd/hakurei/print_test.go

@@ -64,7 +64,7 @@ func TestPrintShowInstance(t *testing.T) {
  Identity:       9 (org.chromium.Chromium)
  Enablements:    wayland, dbus, pipewire
  Groups:         video, dialout, plugdev
- Flags:          multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, cover_run, runtime, tmpdir
+ Flags:          multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, runtime, tmpdir
  Home:           /data/data/org.chromium.Chromium
  Hostname:       localhost
  Path:           /run/current-system/sw/bin/chromium
@@ -161,7 +161,7 @@ App
  Identity:       9 (org.chromium.Chromium)
  Enablements:    wayland, dbus, pipewire
  Groups:         video, dialout, plugdev
- Flags:          multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, cover_run, runtime, tmpdir
+ Flags:          multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, runtime, tmpdir
  Home:           /data/data/org.chromium.Chromium
  Hostname:       localhost
  Path:           /run/current-system/sw/bin/chromium
@@ -355,7 +355,6 @@ App
     "multiarch": true,
     "map_real_uid": true,
     "device": true,
-    "cover_run": true,
     "share_runtime": true,
     "share_tmpdir": true
   },
@@ -507,7 +506,6 @@ App
     "multiarch": true,
     "map_real_uid": true,
     "device": true,
-    "cover_run": true,
     "share_runtime": true,
     "share_tmpdir": true
   }
@@ -706,7 +704,6 @@ func TestPrintPs(t *testing.T) {
       "multiarch": true,
       "map_real_uid": true,
       "device": true,
-      "cover_run": true,
       "share_runtime": true,
       "share_tmpdir": true
     },

cmd/hsu/main.go

@@ -21,6 +21,15 @@
 // following paragraphs are considered an internal detail and not covered by the
 // compatibility promise.
 //
+// After checking credentials, hsu checks via /proc/ the absolute pathname of
+// its parent process, and fails if it does not match the hakurei pathname set
+// at link time. This is not a security feature: the priv-side is considered
+// trusted, and this feature makes no attempt to address the racy nature of
+// querying /proc/, or debuggers attached to the parent process. Instead, this
+// aims to discourage misuse and reduce confusion if the user accidentally
+// stumbles upon this program. It also prevents accidental use of the incorrect
+// installation of hsu in some environments.
+//
 // Since target container environment variables are set up in shim via the
 // [container] infrastructure, the environment is used for parameters from the
 // parent process.
@@ -53,6 +62,7 @@ import (
 	"runtime"
 	"slices"
 	"strconv"
+	"strings"
 	"syscall"
 )
 
@@ -97,6 +107,18 @@ func main() {
 		return
 	}
 
+	var toolPath string
+	pexe := filepath.Join("/proc", strconv.Itoa(os.Getppid()), "exe")
+	if p, err := os.Readlink(pexe); err != nil {
+		log.Fatalf("cannot read parent executable path: %v", err)
+	} else if strings.HasSuffix(p, " (deleted)") {
+		log.Fatal("hakurei executable has been deleted")
+	} else if p != hakureiPath {
+		log.Fatal("this program must be started by hakurei")
+	} else {
+		toolPath = p
+	}
+
 	// refuse to run if hsurc is not protected correctly
 	if s, err := os.Stat(hsuConfPath); err != nil {
 		log.Fatal(err)
@@ -183,7 +205,7 @@ func main() {
 		log.Fatalf("cannot set no_new_privs flag: %s", errno.Error())
 	}
 
-	if err := syscall.Exec(hakureiPath, []string{
+	if err := syscall.Exec(toolPath, []string{
 		"hakurei",
 		"shim",
 	}, []string{

cmd/irdump/main.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"errors"
+	"log"
+	"os"
+
+	"hakurei.app/command"
+	"hakurei.app/internal/pkg"
+)
+
+func main() {
+	log.SetFlags(0)
+	log.SetPrefix("irdump: ")
+
+	var (
+		flagOutput string
+		flagReal   bool
+		flagHeader bool
+		flagForce  bool
+		flagRaw    bool
+	)
+	c := command.New(os.Stderr, log.Printf, "irdump", func(args []string) (err error) {
+		var input *os.File
+		if len(args) != 1 {
+			return errors.New("irdump requires 1 argument")
+		}
+		if input, err = os.Open(args[0]); err != nil {
+			return
+		}
+		defer input.Close()
+
+		var output *os.File
+		if flagOutput == "" {
+			output = os.Stdout
+		} else {
+			defer output.Close()
+			if output, err = os.Create(flagOutput); err != nil {
+				return
+			}
+		}
+
+		var out string
+		if out, err = pkg.Disassemble(input, flagReal, flagHeader, flagForce, flagRaw); err != nil {
+			return
+		}
+		if _, err = output.WriteString(out); err != nil {
+			return
+		}
+		return
+	}).Flag(
+		&flagOutput,
+		"o", command.StringFlag(""),
+		"Output file for asm (leave empty for stdout)",
+	).Flag(
+		&flagReal,
+		"r", command.BoolFlag(false),
+		"skip label generation; idents print real value",
+	).Flag(
+		&flagHeader,
+		"H", command.BoolFlag(false),
+		"display artifact headers",
+	).Flag(
+		&flagForce,
+		"f", command.BoolFlag(false),
+		"force display (skip validations)",
+	).Flag(
+		&flagRaw,
+		"R", command.BoolFlag(false),
+		"don't format output",
+	)
+
+	c.MustParse(os.Args[1:], func(err error) {
+		log.Fatal(err)
+	})
+}

cmd/mbf/cache.go

@@ -2,14 +2,12 @@ package main
 
 import (
 	"context"
-	"net/http"
 	"os"
 	"path/filepath"
 	"testing"
 
 	"hakurei.app/check"
 	"hakurei.app/internal/pkg"
-	"hakurei.app/internal/rosa"
 	"hakurei.app/message"
 )
 
@@ -21,17 +19,10 @@ type cache struct {
 	// Should generally not be used directly.
 	c *pkg.Cache
 
-	cures, jobs int
-	// Primarily to work around missing landlock LSM.
-	hostAbstract bool
-	// Set SCHED_IDLE.
-	idle bool
-	// Unset [pkg.CSuppressInit].
-	verboseInit bool
-	// Loaded artifact of [rosa.QEMU].
-	qemu pkg.Artifact
+	cures, jobs        int
+	hostAbstract, idle bool
 
-	base, mirror string
+	base string
 }
 
 // open opens the underlying [pkg.Cache].
@@ -40,6 +31,9 @@ func (cache *cache) open() (err error) {
 		return os.ErrInvalid
 	}
 
+	if cache.base == "" {
+		cache.base = "cache"
+	}
 	var base *check.Absolute
 	if cache.base, err = filepath.Abs(cache.base); err != nil {
 		return
@@ -54,9 +48,6 @@ func (cache *cache) open() (err error) {
 	if cache.hostAbstract {
 		flags |= pkg.CHostAbstract
 	}
-	if !cache.verboseInit {
-		flags |= pkg.CSuppressInit
-	}
 
 	done := make(chan struct{})
 	defer close(done)
@@ -82,39 +73,6 @@ func (cache *cache) open() (err error) {
 		cache.jobs,
 		base,
 	)
-	if err != nil {
-		return
-	}
-	done <- struct{}{}
-
-	if cache.mirror != "" {
-		var pub []byte
-		pub, err = os.ReadFile(base.Append("ed25519.pub").String())
-		if err != nil {
-			cache.c.Close()
-			return
-		}
-		var r rosa.Remote
-		if r, err = rosa.NewRemote(cache.mirror, pub, http.DefaultClient); err != nil {
-			cache.c.Close()
-			return err
-		}
-		cache.c.SetExternal(r)
-	}
-
-	if cache.qemu != nil {
-		var pathname *check.Absolute
-		pathname, _, err = cache.c.Cure(cache.qemu)
-		if err != nil {
-			cache.c.Close()
-			return
-		}
-
-		for arch, entry := range rosa.Arches(pathname) {
-			pkg.RegisterArch(arch, entry)
-		}
-	}
-
 	return
 }
 

cmd/mbf/daemon.go

@@ -99,9 +99,10 @@ func cancelIdent(
 	var ident pkg.ID
 	if _, err := io.ReadFull(conn, ident[:]); err != nil {
 		return nil, false, errors.Join(err, conn.Close())
+	} else if err = conn.Close(); err != nil {
+		return nil, false, err
 	}
-	ok := cache.Cancel(unique.Make(ident))
-	return &ident, ok, conn.Close()
+	return &ident, cache.Cancel(unique.Make(ident)), nil
 }
 
 // serve services connections from a [net.UnixListener].
@@ -193,11 +194,11 @@ func serve(
 						}
 
 					case specialAbort:
-						log.Println("aborting all pending cures")
-						cm.c.Abort()
 						if _err := conn.Close(); _err != nil {
 							log.Println(_err)
 						}
+						log.Println("aborting all pending cures")
+						cm.c.Abort()
 					}
 
 					return
@@ -305,7 +306,6 @@ func cancelRemote(
 	ctx context.Context,
 	addr *net.UnixAddr,
 	a pkg.Artifact,
-	wait bool,
 ) error {
 	done, conn, err := dial(ctx, addr)
 	if err != nil {
@@ -324,19 +324,13 @@ func cancelRemote(
 	} else if n != len(id) {
 		return errors.Join(io.ErrShortWrite, conn.Close())
 	}
-	if wait {
-		if _, err = conn.Read(make([]byte, 1)); err == io.EOF {
-			err = nil
-		}
-	}
-	return errors.Join(err, conn.Close())
+	return conn.Close()
 }
 
 // abortRemote aborts all [pkg.Artifact] curing on a daemon.
 func abortRemote(
 	ctx context.Context,
 	addr *net.UnixAddr,
-	wait bool,
 ) error {
 	done, conn, err := dial(ctx, addr)
 	if err != nil {
@@ -345,10 +339,5 @@ func abortRemote(
 	defer close(done)
 
 	err = writeSpecialHeader(conn, specialAbort)
-	if wait && err == nil {
-		if _, err = conn.Read(make([]byte, 1)); err == io.EOF {
-			err = nil
-		}
-	}
 	return errors.Join(err, conn.Close())
 }

cmd/mbf/daemon_test.go

@@ -106,11 +106,11 @@ func TestDaemon(t *testing.T) {
 		}
 	}()
 
-	if err = cancelRemote(ctx, &addr, pkg.NewFile("nonexistent", nil), true); err != nil {
+	if err = cancelRemote(ctx, &addr, pkg.NewFile("nonexistent", nil)); err != nil {
 		t.Fatalf("cancelRemote: error = %v", err)
 	}
 
-	if err = abortRemote(ctx, &addr, true); err != nil {
+	if err = abortRemote(ctx, &addr); err != nil {
 		t.Fatalf("abortRemote: error = %v", err)
 	}
 

cmd/mbf/info.go

@@ -6,7 +6,6 @@ import (
 	"io"
 	"os"
 	"strings"
-	"unique"
 
 	"hakurei.app/internal/pkg"
 	"hakurei.app/internal/rosa"
@@ -18,12 +17,25 @@ func commandInfo(
 	args []string,
 	w io.Writer,
 	writeStatus bool,
-	r *rosa.Report,
+	reportPath string,
 ) (err error) {
 	if len(args) == 0 {
 		return errors.New("info requires at least 1 argument")
 	}
 
+	var r *rosa.Report
+	if reportPath != "" {
+		if r, err = rosa.OpenReport(reportPath); err != nil {
+			return err
+		}
+		defer func() {
+			if closeErr := r.Close(); err == nil {
+				err = closeErr
+			}
+		}()
+		defer r.HandleAccess(&err)()
+	}
+
 	// recovered by HandleAccess
 	mustPrintln := func(a ...any) {
 		if _, _err := fmt.Fprintln(w, a...); _err != nil {
@@ -36,19 +48,17 @@ func commandInfo(
 		}
 	}
 
-	t := rosa.Native().Std()
 	for i, name := range args {
-		handle := rosa.ArtifactH(unique.Make(name))
-		if meta, a := t.Load(handle); meta == nil {
+		if p, ok := rosa.ResolveName(name); !ok {
 			return fmt.Errorf("unknown artifact %q", name)
 		} else {
 			var suffix string
-
-			if meta.Version != rosa.Unversioned {
-				suffix += "-" + meta.Version
+			if version := rosa.Std.Version(p); version != rosa.Unversioned {
+				suffix += "-" + version
 			}
 			mustPrintln("name        : " + name + suffix)
 
+			meta := rosa.GetMetadata(p)
 			mustPrintln("description : " + meta.Description)
 			if meta.Website != "" {
 				mustPrintln("website     : " +
@@ -57,10 +67,9 @@ func commandInfo(
 			if len(meta.Dependencies) > 0 {
 				mustPrint("depends on  :")
 				for _, d := range meta.Dependencies {
-					_meta, _ := rosa.Native().Std().MustLoad(d)
-					s := _meta.Name
-					if _meta.Version != rosa.Unversioned {
-						s += "-" + _meta.Version
+					s := rosa.GetMetadata(d).Name
+					if version := rosa.Std.Version(d); version != rosa.Unversioned {
+						s += "-" + version
 					}
 					mustPrint(" " + s)
 				}
@@ -72,7 +81,7 @@ func commandInfo(
 				if r == nil {
 					var f io.ReadSeekCloser
 					err = cm.Do(func(cache *pkg.Cache) (err error) {
-						f, err = cache.OpenStatus(a)
+						f, err = cache.OpenStatus(rosa.Std.Load(p))
 						return
 					})
 					if err != nil {
@@ -91,7 +100,7 @@ func commandInfo(
 						}
 					}
 				} else if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					status, n := r.ArtifactOf(cache.Ident(a))
+					status, n := r.ArtifactOf(cache.Ident(rosa.Std.Load(p)))
 					if status == nil {
 						mustPrintln(
 							statusPrefix + "not in report",

cmd/mbf/info_test.go

@@ -10,7 +10,6 @@ import (
 	"strings"
 	"syscall"
 	"testing"
-	"unique"
 	"unsafe"
 
 	"hakurei.app/internal/pkg"
@@ -21,14 +20,6 @@ import (
 func TestInfo(t *testing.T) {
 	t.Parallel()
 
-	_t := rosa.Native().Std()
-	qemuMeta, _ := _t.Load(rosa.H("qemu"))
-	glibMeta, _ := _t.Load(rosa.H("glib"))
-	zlibMeta, zlib := _t.Load(rosa.H("zlib"))
-	zstdMeta, _ := _t.Load(rosa.H("zstd"))
-	hakureiMeta, _ := _t.Load(rosa.H("hakurei"))
-	hakureiDistMeta, _ := _t.Load(rosa.H("hakurei-dist"))
-
 	testCases := []struct {
 		name    string
 		args    []string
@@ -38,24 +29,24 @@ func TestInfo(t *testing.T) {
 		wantErr any
 	}{
 		{"qemu", []string{"qemu"}, nil, "", `
-name        : qemu-` + qemuMeta.Version + `
+name        : qemu-` + rosa.Std.Version(rosa.QEMU) + `
 description : a generic and open source machine emulator and virtualizer
 website     : https://www.qemu.org
-depends on  : glib-` + glibMeta.Version + ` zstd-` + zstdMeta.Version + `
+depends on  : glib-` + rosa.Std.Version(rosa.GLib) + ` zstd-` + rosa.Std.Version(rosa.Zstd) + `
 `, nil},
 
 		{"multi", []string{"hakurei", "hakurei-dist"}, nil, "", `
-name        : hakurei-` + hakureiMeta.Version + `
+name        : hakurei-` + rosa.Std.Version(rosa.Hakurei) + `
 description : low-level userspace tooling for Rosa OS
 website     : https://hakurei.app
 
-name        : hakurei-dist-` + hakureiDistMeta.Version + `
+name        : hakurei-dist-` + rosa.Std.Version(rosa.HakureiDist) + `
 description : low-level userspace tooling for Rosa OS (distribution tarball)
 website     : https://hakurei.app
 `, nil},
 
 		{"nonexistent", []string{"zlib", "\x00"}, nil, "", `
-name        : zlib-` + zlibMeta.Version + `
+name        : zlib-` + rosa.Std.Version(rosa.Zlib) + `
 description : lossless data-compression library
 website     : https://zlib.net
 
@@ -65,12 +56,12 @@ website     : https://zlib.net
 			"zstd":    "internal/pkg (amd64) on satori\n",
 			"hakurei": "internal/pkg (amd64) on satori\n\n",
 		}, "", `
-name        : zlib-` + zlibMeta.Version + `
+name        : zlib-` + rosa.Std.Version(rosa.Zlib) + `
 description : lossless data-compression library
 website     : https://zlib.net
 status      : not yet cured
 
-name        : zstd-` + zstdMeta.Version + `
+name        : zstd-` + rosa.Std.Version(rosa.Zstd) + `
 description : a fast compression algorithm
 website     : https://facebook.github.io/zstd
 status      : internal/pkg (amd64) on satori
@@ -79,19 +70,19 @@ status      : internal/pkg (amd64) on satori
 		{"status cache perm", []string{"zlib"}, map[string]string{
 			"zlib": "\x00",
 		}, "", `
-name        : zlib-` + zlibMeta.Version + `
+name        : zlib-` + rosa.Std.Version(rosa.Zlib) + `
 description : lossless data-compression library
 website     : https://zlib.net
 `, func(cm *cache) error {
 			return &os.PathError{
 				Op:   "open",
-				Path: filepath.Join(cm.base, "status", pkg.Encode(cm.c.Ident(zlib).Value())),
+				Path: filepath.Join(cm.base, "status", pkg.Encode(cm.c.Ident(rosa.Std.Load(rosa.Zlib)).Value())),
 				Err:  syscall.EACCES,
 			}
 		}},
 
 		{"status report", []string{"zlib"}, nil, strings.Repeat("\x00", len(pkg.Checksum{})+8), `
-name        : zlib-` + zlibMeta.Version + `
+name        : zlib-` + rosa.Std.Version(rosa.Zlib) + `
 description : lossless data-compression library
 website     : https://zlib.net
 status      : not in report
@@ -104,7 +95,7 @@ status      : not in report
 			var (
 				cm  *cache
 				buf strings.Builder
-				r   *rosa.Report
+				rp  string
 			)
 
 			if tc.status != nil || tc.report != "" {
@@ -117,31 +108,20 @@ status      : not in report
 			}
 
 			if tc.report != "" {
-				pathname := filepath.Join(t.TempDir(), "report")
-				err := os.WriteFile(
-					pathname,
+				rp = filepath.Join(t.TempDir(), "report")
+				if err := os.WriteFile(
+					rp,
 					unsafe.Slice(unsafe.StringData(tc.report), len(tc.report)),
 					0400,
-				)
-				if err != nil {
+				); err != nil {
 					t.Fatal(err)
 				}
-
-				r, err = rosa.OpenReport(pathname)
-				if err != nil {
-					t.Fatal(err)
-				}
-				defer func() {
-					if err = r.Close(); err != nil {
-						t.Fatal(err)
-					}
-				}()
 			}
 
 			if tc.status != nil {
 				for name, status := range tc.status {
-					_, a := _t.Load(rosa.ArtifactH(unique.Make(name)))
-					if a == nil {
+					p, ok := rosa.ResolveName(name)
+					if !ok {
 						t.Fatalf("invalid name %q", name)
 					}
 					perm := os.FileMode(0400)
@@ -152,7 +132,7 @@ status      : not in report
 						return os.WriteFile(filepath.Join(
 							cm.base,
 							"status",
-							pkg.Encode(cache.Ident(a).Value()),
+							pkg.Encode(cache.Ident(rosa.Std.Load(p)).Value()),
 						), unsafe.Slice(unsafe.StringData(status), len(status)), perm)
 					}); err != nil {
 						t.Fatalf("Do: error = %v", err)
@@ -177,7 +157,7 @@ status      : not in report
 				tc.args,
 				&buf,
 				cm != nil,
-				r,
+				rp,
 			); !reflect.DeepEqual(err, wantErr) {
 				t.Fatalf("commandInfo: error = %v, want %v", err, wantErr)
 			}

cmd/mbf/internal/pkgserver/ui/ui.go

@@ -1,9 +0,0 @@
-// Package ui holds the static web UI.
-package ui
-
-import "net/http"
-
-// Register arranges for mux to serve the embedded frontend.
-func Register(mux *http.ServeMux) {
-	mux.Handle("GET /", http.FileServer(http.FS(static)))
-}

cmd/mbf/internal/pkgserver/ui/ui_full.go

@@ -1,21 +0,0 @@
-//go:build frontend
-
-package ui
-
-import (
-	"embed"
-	"io/fs"
-)
-
-//go:generate tsc
-//go:generate cp index.html style.css static
-//go:embed static
-var _static embed.FS
-
-var static = func() fs.FS {
-	if f, err := fs.Sub(_static, "static"); err != nil {
-		panic(err)
-	} else {
-		return f
-	}
-}()

cmd/mbf/main.go

@@ -14,14 +14,12 @@ package main
 
 import (
 	"context"
-	"crypto/ed25519"
 	"crypto/sha512"
 	"errors"
 	"fmt"
 	"io"
 	"log"
 	"net"
-	"net/http"
 	"os"
 	"os/signal"
 	"path/filepath"
@@ -32,34 +30,19 @@ import (
 	"syscall"
 	"time"
 	"unique"
-	"unsafe"
 
 	"hakurei.app/check"
 	"hakurei.app/command"
 	"hakurei.app/container"
+	"hakurei.app/container/seccomp"
+	"hakurei.app/container/std"
 	"hakurei.app/ext"
 	"hakurei.app/fhs"
 	"hakurei.app/internal/pkg"
 	"hakurei.app/internal/rosa"
 	"hakurei.app/message"
-
-	"hakurei.app/cmd/mbf/internal/pkgserver"
-	"hakurei.app/cmd/mbf/internal/pkgserver/ui"
 )
 
-// writeFileExcl is like [os.WriteFile], but sets [os.O_EXCL] instead.
-func writeFileExcl(name string, data []byte, perm os.FileMode) error {
-	f, err := os.OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
-	if err != nil {
-		return err
-	}
-	_, err = f.Write(data)
-	if err1 := f.Close(); err1 != nil && err == nil {
-		err = err1
-	}
-	return err
-}
-
 func main() {
 	container.TryArgv0(nil)
 
@@ -71,105 +54,34 @@ func main() {
 		log.Fatal("this program must not run as root")
 	}
 
-	defer func() {
-		r := recover()
-		if r == nil {
-			return
-		}
-
-		switch r.(type) {
-		case rosa.LoadError, pkg.IRStringError:
-			log.Fatal(r)
-		default:
-			panic(r)
-		}
-	}()
-
 	ctx, stop := signal.NotifyContext(context.Background(),
 		syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
 	defer stop()
 
 	var cm cache
-	defer func() { cm.Close() }()
+	defer func() {
+		cm.Close()
+
+		if r := recover(); r != nil {
+			fmt.Println(r)
+			log.Fatal("consider scrubbing the on-disk cache")
+		}
+	}()
 
 	var (
 		flagQuiet bool
-		flagQEMU  bool
-		flagArch  string
-		flagCheck bool
-		flagLTO   bool
-		flagPT    bool
-		flagDry   bool
-		flagPath  string
-
-		flagSourcePath    string
-		flagCrossOverride int
 
 		addr net.UnixAddr
 	)
 	c := command.New(os.Stderr, log.Printf, "mbf", func([]string) error {
-		if !rosa.Native().HasStageEarly() {
-			return pkg.UnsupportedArchError(runtime.GOARCH)
-		}
-
-		if flagPT {
-			log.Println("parsed in", rosa.ParseTime())
-		}
-
 		msg.SwapVerbose(!flagQuiet)
 		cm.ctx, cm.msg = ctx, msg
 		cm.base = os.ExpandEnv(cm.base)
-		if cm.base == "" {
-			cm.base = "cache"
-		}
-		cm.mirror = os.ExpandEnv(cm.mirror)
-		azaleaPath := os.ExpandEnv(flagPath)
 
 		addr.Net = "unix"
 		addr.Name = os.ExpandEnv(addr.Name)
 		if addr.Name == "" {
-			addr.Name = filepath.Join(cm.base, "daemon")
-		}
-
-		var flags int
-		if !flagCheck {
-			flags |= rosa.OptSkipCheck
-		}
-		if !flagLTO {
-			flags |= rosa.OptLLVMNoLTO
-		}
-		rosa.Native().DropCaches("", flags)
-		cross := flagArch != "" && flagArch != runtime.GOARCH
-		if flagQEMU || cross {
-			_, cm.qemu = rosa.Native().Std().MustLoad(rosa.H("qemu"))
-		}
-
-		if cross {
-			if flagCrossOverride != -1 {
-				flags = flagCrossOverride
-			}
-
-			rosa.Native().DropCaches(flagArch, flags)
-			if !rosa.Native().HasStageEarly() {
-				return pkg.UnsupportedArchError(flagArch)
-			}
-		}
-
-		if flagSourcePath != "" {
-			if err := rosa.Native().SetSource(os.DirFS(flagSourcePath)); err != nil {
-				return err
-			}
-		}
-
-		if azaleaPath != "" {
-			var root *os.Root
-			if a, err := check.NewAbs(azaleaPath); err != nil {
-				return err
-			} else if root, err = os.OpenRoot(a.String()); err != nil {
-				return err
-			} else if err = rosa.Native().RegisterFS(root.FS()); err != nil {
-				return err
-			}
+			addr.Name = "daemon"
 		}
 
 		return nil
@@ -177,30 +89,6 @@ func main() {
 		&flagQuiet,
 		"q", command.BoolFlag(false),
 		"Do not print cure messages",
-	).Flag(
-		&flagQEMU,
-		"register", command.BoolFlag(false),
-		"Enable additional target architectures",
-	).Flag(
-		&flagArch,
-		"arch", command.StringFlag(runtime.GOARCH),
-		"Target architecture",
-	).Flag(
-		&flagLTO,
-		"lto", command.BoolFlag(false),
-		"Enable LTO in stage2 and stage3 LLVM toolchains",
-	).Flag(
-		&flagCheck,
-		"check", command.BoolFlag(true),
-		"Run test suites",
-	).Flag(
-		&flagCrossOverride,
-		"cross-flags", command.IntFlag(-1),
-		"Override non-native target preset flags",
-	).Flag(
-		&cm.verboseInit,
-		"v", command.BoolFlag(false),
-		"Do not suppress verbose output from init",
 	).Flag(
 		&cm.cures,
 		"cures", command.IntFlag(0),
@@ -213,10 +101,6 @@ func main() {
 		&cm.base,
 		"d", command.StringFlag("$MBF_CACHE_DIR"),
 		"Directory to store cured artifacts",
-	).Flag(
-		&cm.mirror,
-		"r", command.StringFlag("$MBF_REMOTE"),
-		"URL of mirror service",
 	).Flag(
 		&cm.idle,
 		"sched-idle", command.BoolFlag(false),
@@ -232,38 +116,12 @@ func main() {
 		&addr.Name,
 		"socket", command.StringFlag("$MBF_DAEMON_SOCKET"),
 		"Pathname of socket to bind to",
-	).Flag(
-		&flagPT,
-		"parse-time", command.BoolFlag(false),
-		"Print duration of the initial azalea parse",
-	).Flag(
-		&flagDry,
-		"dry", command.BoolFlag(false),
-		"Do not destroy cache entries",
-	).Flag(
-		&flagSourcePath,
-		"source", command.StringFlag(""),
-		"Override hakurei source tree",
-	).Flag(
-		&flagPath,
-		"p", command.StringFlag("$AZALEA_PATH"),
-		"Load additional azalea files",
 	)
 
 	c.NewCommand(
 		"checksum", "Compute checksum of data read from standard input",
 		func([]string) error {
-			done := make(chan struct{})
-			defer close(done)
-			go func() {
-				select {
-				case <-ctx.Done():
-					os.Exit(1)
-				case <-done:
-					return
-				}
-			}()
-
+			go func() { <-ctx.Done(); os.Exit(1) }()
 			h := sha512.New384()
 			if _, err := io.Copy(h, os.Stdin); err != nil {
 				return err
@@ -297,7 +155,6 @@ func main() {
 
 	{
 		var (
-			flagBind   string
 			flagStatus bool
 			flagReport string
 		)
@@ -305,52 +162,8 @@ func main() {
 			"info",
 			"Display out-of-band metadata of an artifact",
 			func(args []string) (err error) {
-				const shutdownTimeout = 15 * time.Second
-
-				var r *rosa.Report
-				if flagReport != "" {
-					if r, err = rosa.OpenReport(flagReport); err != nil {
-						return err
-					}
-					defer func() {
-						if closeErr := r.Close(); err == nil {
-							err = closeErr
-						}
-					}()
-					defer r.HandleAccess(&err)()
-				}
-
-				if flagBind == "" {
-					return commandInfo(&cm, args, os.Stdout, flagStatus, r)
-				}
-
-				var mux http.ServeMux
-				ui.Register(&mux)
-				if err = pkgserver.Register(ctx, &mux, r); err != nil {
-					return
-				}
-
-				server := http.Server{Addr: flagBind, Handler: &mux}
-				go func() {
-					<-ctx.Done()
-					cc, cancel := context.WithTimeout(context.Background(), shutdownTimeout)
-					defer cancel()
-					if _err := server.Shutdown(cc); _err != nil {
-						log.Fatal(_err)
-					}
-				}()
-
-				msg.Verbosef("listening on %q", flagBind)
-				err = server.ListenAndServe()
-				if errors.Is(err, http.ErrServerClosed) {
-					err = nil
-				}
-				return
+				return commandInfo(&cm, args, os.Stdout, flagStatus, flagReport)
 			},
-		).Flag(
-			&flagBind,
-			"bind", command.StringFlag(""),
-			"TCP address for the server to listen on",
 		).Flag(
 			&flagStatus,
 			"status", command.BoolFlag(false),
@@ -400,10 +213,7 @@ func main() {
 	)
 
 	{
-		var (
-			flagJobs    int
-			flagNoBlock bool
-		)
+		var flagJobs int
 		c.NewCommand("updates", command.UsageInternal, func([]string) error {
 			var (
 				errsMu sync.Mutex
@@ -412,21 +222,16 @@ func main() {
 				n atomic.Uint64
 			)
 
-			w := make(chan rosa.ArtifactH)
+			w := make(chan rosa.PArtifact)
 			var wg sync.WaitGroup
 			for range max(flagJobs, 1) {
 				wg.Go(func() {
 					for p := range w {
-						meta, _ := rosa.Native().Std().MustLoad(p)
+						meta := rosa.GetMetadata(p)
 						if meta.ID == 0 {
 							continue
 						}
 
-						if !flagNoBlock && meta.Blocked != "" {
-							msg.Verbosef("%s is blocked: %s", meta.Name, meta.Blocked)
-							continue
-						}
-
 						v, err := meta.GetVersions(ctx)
 						if err != nil {
 							errsMu.Lock()
@@ -435,9 +240,12 @@ func main() {
 							continue
 						}
 
-						if latest := meta.GetLatest(v); meta.Version != latest {
+						if current, latest :=
+							rosa.Std.Version(p),
+							meta.GetLatest(v); current != latest {
+
 							n.Add(1)
-							log.Printf("%s %s < %s", meta.Name, meta.Version, latest)
+							log.Printf("%s %s < %s", meta.Name, current, latest)
 							continue
 						}
 
@@ -447,9 +255,9 @@ func main() {
 			}
 
 		done:
-			for _, p := range rosa.Native().CollectAll() {
+			for i := range rosa.PresetEnd {
 				select {
-				case w <- p:
+				case w <- rosa.PArtifact(i):
 					break
 				case <-ctx.Done():
 					break done
@@ -467,23 +275,9 @@ func main() {
 			&flagJobs,
 			"j", command.IntFlag(32),
 			"Maximum number of simultaneous connections",
-		).Flag(
-			&flagNoBlock,
-			"ignore-block", command.BoolFlag(false),
-			"Inhibit update blocking",
 		)
 	}
 
-	c.NewCommand("blocked", command.UsageInternal, func([]string) error {
-		for _, p := range rosa.Native().CollectAll() {
-			meta, _ := rosa.Native().Std().Load(p)
-			if meta.Blocked != "" {
-				fmt.Printf("%s: %s\n", meta.Name, meta.Blocked)
-			}
-		}
-		return nil
-	})
-
 	c.NewCommand(
 		"daemon",
 		"Service artifact IR with Rosa OS extensions",
@@ -497,82 +291,20 @@ func main() {
 		},
 	)
 
-	c.NewCommand(
-		"keygen",
-		"Create keypair for local cache",
-		func([]string) error {
-			pub, priv, err := ed25519.GenerateKey(nil)
-			if err != nil {
-				return err
-			}
-
-			return errors.Join(writeFileExcl(filepath.Join(
-				cm.base,
-				"ed25519.pub",
-			), pub, 0444), writeFileExcl(filepath.Join(
-				cm.base,
-				"ed25519",
-			), priv, 0400))
-		},
-	)
-
-	c.NewCommand(
-		"serve",
-		"Export local cache as mirror",
-		func(args []string) error {
-			const shutdownTimeout = 15 * time.Second
-
-			if len(args) != 1 {
-				return errors.New("serve requires 1 argument")
-			}
-
-			var key ed25519.PrivateKey
-			if p, err := os.ReadFile(filepath.Join(cm.base, "ed25519")); err != nil {
-				return err
-			} else if len(p) != ed25519.PrivateKeySize {
-				return errors.New("invalid private key")
-			} else {
-				key = p
-			}
-
-			var h http.Handler
-			if base, err := os.OpenRoot(cm.base); err != nil {
-				return err
-			} else {
-				h = rosa.NewMirror(msg, base.FS(), key)
-			}
-
-			server := http.Server{Addr: args[0], Handler: h}
-			go func() {
-				<-ctx.Done()
-				cc, cancel := context.WithTimeout(context.Background(), shutdownTimeout)
-				defer cancel()
-				if err := server.Shutdown(cc); err != nil {
-					log.Fatal(err)
-				}
-			}()
-
-			msg.Verbosef("listening on %q", args[0])
-			err := server.ListenAndServe()
-			if errors.Is(err, http.ErrServerClosed) {
-				err = nil
-			}
-			return err
-		},
-	)
-
 	{
 		var (
 			flagGentoo   string
 			flagChecksum string
+
+			flagStage0 bool
 		)
 		c.NewCommand(
 			"stage3",
 			"Check for toolchain 3-stage non-determinism",
 			func(args []string) (err error) {
-				s := rosa.Std
+				t := rosa.Std
 				if flagGentoo != "" {
-					s -= 3 // magic number to discourage misuse
+					t -= 3 // magic number to discourage misuse
 
 					var checksum pkg.Checksum
 					if len(flagChecksum) != 0 {
@@ -580,7 +312,7 @@ func main() {
 							return
 						}
 					}
-					rosa.Native().SetGentooStage3(flagGentoo, checksum)
+					rosa.SetGentooStage3(flagGentoo, checksum)
 				}
 
 				var (
@@ -588,10 +320,10 @@ func main() {
 					checksum [2]unique.Handle[pkg.Checksum]
 				)
 
-				_llvm := rosa.H("llvm")
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(s - 2).Load(_llvm)
-					pathname, _, err = cache.Cure(llvm)
+					pathname, _, err = cache.Cure(
+						(t - 2).Load(rosa.Clang),
+					)
 					return
 				}); err != nil {
 					return
@@ -599,16 +331,18 @@ func main() {
 				log.Println("stage1:", pathname)
 
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(s - 1).Load(_llvm)
-					pathname, checksum[0], err = cache.Cure(llvm)
+					pathname, checksum[0], err = cache.Cure(
+						(t - 1).Load(rosa.Clang),
+					)
 					return
 				}); err != nil {
 					return
 				}
 				log.Println("stage2:", pathname)
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(s).Load(_llvm)
-					pathname, checksum[1], err = cache.Cure(llvm)
+					pathname, checksum[1], err = cache.Cure(
+						t.Load(rosa.Clang),
+					)
 					return
 				}); err != nil {
 					return
@@ -626,6 +360,19 @@ func main() {
 						"("+pkg.Encode(checksum[0].Value())+")",
 					)
 				}
+
+				if flagStage0 {
+					if err = cm.Do(func(cache *pkg.Cache) (err error) {
+						pathname, _, err = cache.Cure(
+							t.Load(rosa.Stage0),
+						)
+						return
+					}); err != nil {
+						return
+					}
+					log.Println(pathname)
+				}
+
 				return
 			},
 		).Flag(
@@ -636,6 +383,10 @@ func main() {
 			&flagChecksum,
 			"checksum", command.StringFlag(""),
 			"Checksum of Gentoo stage3 tarball",
+		).Flag(
+			&flagStage0,
+			"stage0", command.BoolFlag(false),
+			"Create bootstrap stage0 tarball",
 		)
 	}
 
@@ -646,11 +397,6 @@ func main() {
 			flagExport  string
 			flagRemote  bool
 			flagNoReply bool
-			flagFaults  bool
-			flagPop     bool
-
-			flagBoot bool
-			flagStd  bool
 		)
 		c.NewCommand(
 			"cure",
@@ -659,16 +405,8 @@ func main() {
 				if len(args) != 1 {
 					return errors.New("cure requires 1 argument")
 				}
-
-				t := rosa.Std
-				if flagBoot {
-					t -= 2
-				} else if flagStd {
-					t -= 1
-				}
-
-				_, a := rosa.Native().New(t).Load(rosa.ArtifactH(unique.Make(args[0])))
-				if a == nil {
+				p, ok := rosa.ResolveName(args[0])
+				if !ok {
 					return fmt.Errorf("unknown artifact %q", args[0])
 				}
 
@@ -676,7 +414,7 @@ func main() {
 				default:
 					var pathname *check.Absolute
 					err := cm.Do(func(cache *pkg.Cache) (err error) {
-						pathname, _, err = cache.Cure(a)
+						pathname, _, err = cache.Cure(rosa.Std.Load(p))
 						return
 					})
 					if err != nil {
@@ -694,7 +432,7 @@ func main() {
 							0400,
 						); err != nil {
 							return err
-						} else if err = pkg.Write(
+						} else if _, err = pkg.Flatten(
 							os.DirFS(pathname.String()),
 							".",
 							f,
@@ -718,7 +456,7 @@ func main() {
 						return err
 					}
 
-					if err = pkg.NewIR().EncodeAll(f, a); err != nil {
+					if err = pkg.NewIR().EncodeAll(f, rosa.Std.Load(p)); err != nil {
 						_ = f.Close()
 						return err
 					}
@@ -729,8 +467,8 @@ func main() {
 					return cm.Do(func(cache *pkg.Cache) error {
 						return cache.EnterExec(
 							ctx,
-							a,
-							"", true, os.Stdin, os.Stdout, os.Stderr,
+							rosa.Std.Load(p),
+							true, os.Stdin, os.Stdout, os.Stderr,
 							rosa.AbsSystem.Append("bin", "mksh"),
 							"sh",
 						)
@@ -741,6 +479,7 @@ func main() {
 					if flagNoReply {
 						flags |= remoteNoReply
 					}
+					a := rosa.Std.Load(p)
 					pathname, err := cureRemote(ctx, &addr, a, flags)
 					if !flagNoReply && err == nil {
 						log.Println(pathname)
@@ -750,55 +489,12 @@ func main() {
 						cc, cancel := context.WithDeadline(context.Background(), daemonDeadline())
 						defer cancel()
 
-						if _err := cancelRemote(cc, &addr, a, false); _err != nil {
+						if _err := cancelRemote(cc, &addr, a); _err != nil {
 							log.Println(err)
 						}
 					}
 
 					return err
-
-				case flagFaults:
-					var faults []pkg.Fault
-					if err := cm.Do(func(cache *pkg.Cache) (err error) {
-						faults, err = cache.ReadFaults(a)
-						return
-					}); err != nil {
-						return err
-					}
-
-					for _, fault := range faults {
-						log.Printf("%s: %s ago", fault.String(), time.Since(fault.Time()))
-					}
-					return nil
-
-				case flagPop:
-					var faults []pkg.Fault
-					if err := cm.Do(func(cache *pkg.Cache) (err error) {
-						faults, err = cache.ReadFaults(a)
-						return
-					}); err != nil {
-						return err
-					}
-
-					if len(faults) == 0 {
-						return errors.New("no fault entries found")
-					}
-					fault := faults[len(faults)-1]
-					r, err := fault.Open()
-					if err != nil {
-						return err
-					}
-					if _, err = io.Copy(os.Stdout, r); err != nil {
-						_ = r.Close()
-						return err
-					}
-					fmt.Println()
-					if err = r.Close(); err != nil {
-						return err
-					}
-
-					log.Printf("faulting cure terminated %s ago", time.Since(fault.Time()))
-					return fault.Destroy()
 				}
 			},
 		).Flag(
@@ -821,105 +517,13 @@ func main() {
 			&flagNoReply,
 			"no-reply", command.BoolFlag(false),
 			"Do not receive a reply from the daemon",
-		).Flag(
-			&flagBoot,
-			"boot", command.BoolFlag(false),
-			"Build on the stage0 toolchain",
-		).Flag(
-			&flagStd,
-			"std", command.BoolFlag(false),
-			"Build on the intermediate toolchain",
-		).Flag(
-			&flagFaults,
-			"faults", command.BoolFlag(false),
-			"Display fault entries of the specified artifact",
-		).Flag(
-			&flagPop,
-			"pop", command.BoolFlag(false),
-			"Display and destroy the most recent fault entry",
-		)
-	}
-
-	cleanC := c.New("clean", "Remove unused entries from the cache")
-	cleanC.NewCommand(
-		"fault",
-		"Remove all fault entries from the cache",
-		func([]string) error {
-			return cm.Do(func(*pkg.Cache) error {
-				pathname := filepath.Join(cm.base, "fault")
-				dents, err := os.ReadDir(pathname)
-				if err != nil {
-					return err
-				}
-
-				for _, dent := range dents {
-					msg.Verbosef("destroying entry %s", dent.Name())
-					if err = os.Remove(filepath.Join(pathname, dent.Name())); err != nil {
-						return err
-					}
-				}
-				log.Printf("destroyed %d fault entries", len(dents))
-				return nil
-			})
-		},
-	)
-	cleanC.NewCommand(
-		"checksum",
-		"Remove unreachable checksum entries",
-		func([]string) error {
-			return cm.Do(func(cache *pkg.Cache) error {
-				_, checksums, err := cache.Clean(flagDry, false)
-				log.Printf("destroyed %d entries", len(checksums))
-				return err
-			})
-		},
-	)
-	{
-		var flagDeep bool
-		cleanC.NewCommand(
-			"all",
-			"Remove identifiers not reachable by loaded packages",
-			func([]string) error {
-				return cm.Do(func(cache *pkg.Cache) error {
-					t := rosa.Native().Clone().Std()
-					handles := t.CollectAll()
-
-					flags := t.Flags()
-					a := t.Append(nil, handles...)
-					for arch := range rosa.Arches(nil) {
-						if arch == runtime.GOARCH {
-							continue
-						}
-
-						t.DropCaches(arch, rosa.OptLLVMNoLTO|rosa.OptSkipCheck)
-						a = t.Append(a, handles...)
-						t.DropCaches(arch, flags)
-						a = t.Append(a, handles...)
-					}
-
-					ids, checksums, err := cache.Clean(
-						flagDry,
-						!flagDeep,
-						a...,
-					)
-					log.Printf(
-						"destroyed %d identifier and %d checksum entries",
-						len(ids), len(checksums),
-					)
-					return err
-				})
-			},
-		).Flag(
-			&flagDeep,
-			"deep", command.BoolFlag(false),
-			"Include transitive inputs",
 		)
 	}
 
 	c.NewCommand(
 		"abort",
 		"Abort all pending cures on the daemon",
-		func([]string) error { return abortRemote(ctx, &addr, false) },
+		func([]string) error { return abortRemote(ctx, &addr) },
 	)
 
 	{
@@ -933,72 +537,131 @@ func main() {
 			"shell",
 			"Interactive shell in the specified Rosa OS environment",
 			func(args []string) error {
-				resolvconf := "nameserver 1.1.1.1\nnameserver 1.0.0.1\n"
-				if p, err := os.ReadFile(fhs.AbsEtc.Append(
-					"resolv.conf",
-				).String()); err != nil {
-					if !errors.Is(err, os.ErrNotExist) {
-						return err
-					}
-				} else {
-					resolvconf = unsafe.String(unsafe.SliceData(p), len(p))
-				}
-
-				handles := make([]rosa.ArtifactH, len(args), len(args)+3)
+				presets := make([]rosa.PArtifact, len(args)+3)
 				for i, arg := range args {
-					handles[i] = rosa.ArtifactH(unique.Make(arg))
-					if meta, _ := rosa.Native().Std().Load(handles[i]); meta == nil {
+					p, ok := rosa.ResolveName(arg)
+					if !ok {
 						return fmt.Errorf("unknown artifact %q", arg)
 					}
+					presets[i] = p
 				}
 
-				base := rosa.H("llvm")
+				base := rosa.Clang
 				if !flagWithToolchain {
-					base = rosa.H("musl")
+					base = rosa.Musl
 				}
-				handles = append(handles,
+				presets = append(presets,
 					base,
-					rosa.H("mksh"),
-					rosa.H("toybox"),
+					rosa.Mksh,
+					rosa.Toybox,
 				)
 
 				root := make(pkg.Collect, 0, 6+len(args))
-				root = append(root, rosa.NewEtc(false))
-				root = rosa.Native().Std().Append(root, handles...)
+				root = rosa.Std.AppendPresets(root, presets...)
 
-				return cm.Do(func(cache *pkg.Cache) error {
-					return cache.EnterExec(
-						ctx,
-						pkg.NewExec(
-							"",
-							rosa.Native().Arch(),
-							new(pkg.Checksum),
-							1,
-							flagNet,
-							false,
-							fhs.AbsRoot,
-							[]string{
-								"SHELL=/system/bin/mksh",
-								"PATH=/system/bin",
-								"HOME=/",
-							},
-							fhs.AbsProc.Append("nonexistent"),
-							nil,
-							pkg.Path(fhs.AbsRoot, true, root...),
-							pkg.Path(
-								fhs.AbsEtc.Append("resolv.conf"), false,
-								pkg.NewFile(
-									"resolv.conf",
-									unsafe.Slice(unsafe.StringData(resolvconf), len(resolvconf)),
-								),
-							),
-						),
-						"localhost",
-						flagSession, os.Stdin, os.Stdout, os.Stderr,
-						rosa.AbsSystem.Append("bin", "mksh"),
-						"sh",
-					)
+				if err := cm.Do(func(cache *pkg.Cache) error {
+					_, _, err := cache.Cure(&root)
+					return err
+				}); err == nil {
+					return errors.New("unreachable")
+				} else if !pkg.IsCollected(err) {
+					return err
+				}
+
+				type cureRes struct {
+					pathname *check.Absolute
+					checksum unique.Handle[pkg.Checksum]
+				}
+				cured := make(map[pkg.Artifact]cureRes)
+				for _, a := range root {
+					if err := cm.Do(func(cache *pkg.Cache) error {
+						pathname, checksum, err := cache.Cure(a)
+						if err == nil {
+							cured[a] = cureRes{pathname, checksum}
+						}
+						return err
+					}); err != nil {
+						return err
+					}
+				}
+
+				// explicitly open for direct error-free use from this point
+				if cm.c == nil {
+					if err := cm.open(); err != nil {
+						return err
+					}
+				}
+
+				layers := pkg.PromoteLayers(root, func(a pkg.Artifact) (
+					*check.Absolute,
+					unique.Handle[pkg.Checksum],
+				) {
+					res := cured[a]
+					return res.pathname, res.checksum
+				}, func(i int, d pkg.Artifact) {
+					r := pkg.Encode(cm.c.Ident(d).Value())
+					if s, ok := d.(fmt.Stringer); ok {
+						if name := s.String(); name != "" {
+							r += "-" + name
+						}
+					}
+					msg.Verbosef("promoted layer %d as %s", i, r)
 				})
+
+				z := container.New(ctx, msg)
+				z.WaitDelay = 3 * time.Second
+				z.SeccompPresets = pkg.SeccompPresets
+				z.SeccompFlags |= seccomp.AllowMultiarch
+				z.ParentPerm = 0700
+				z.HostNet = flagNet
+				z.RetainSession = flagSession
+				z.Hostname = "localhost"
+				z.Uid, z.Gid = (1<<10)-1, (1<<10)-1
+				z.Stdin, z.Stdout, z.Stderr = os.Stdin, os.Stdout, os.Stderr
+				if s, ok := os.LookupEnv("TERM"); ok {
+					z.Env = append(z.Env, "TERM="+s)
+				}
+
+				var tempdir *check.Absolute
+				if s, err := filepath.Abs(os.TempDir()); err != nil {
+					return err
+				} else if tempdir, err = check.NewAbs(s); err != nil {
+					return err
+				}
+
+				z.Dir = fhs.AbsRoot
+				z.Env = []string{
+					"SHELL=/system/bin/mksh",
+					"PATH=/system/bin",
+					"HOME=/",
+				}
+				z.Path = rosa.AbsSystem.Append("bin", "mksh")
+				z.Args = []string{"mksh"}
+				z.
+					OverlayEphemeral(fhs.AbsRoot, layers...).
+					Place(
+						fhs.AbsEtc.Append("hosts"),
+						[]byte("127.0.0.1 localhost\n"),
+					).
+					Place(
+						fhs.AbsEtc.Append("passwd"),
+						[]byte("media_rw:x:1023:1023::/:/system/bin/sh\n"+
+							"nobody:x:65534:65534::/proc/nonexistent:/system/bin/false\n"),
+					).
+					Place(
+						fhs.AbsEtc.Append("group"),
+						[]byte("media_rw:x:1023:\nnobody:x:65534:\n"),
+					).
+					Bind(tempdir, fhs.AbsTmp, std.BindWritable).
+					Proc(fhs.AbsProc).Dev(fhs.AbsDev, true)
+
+				if err := z.Start(); err != nil {
+					return err
+				}
+				if err := z.Serve(); err != nil {
+					return err
+				}
+				return z.Wait()
 			},
 		).Flag(
 			&flagNet,
@@ -1013,6 +676,7 @@ func main() {
 			"with-toolchain", command.BoolFlag(false),
 			"Include the stage2 LLVM toolchain",
 		)
+
 	}
 
 	c.Command(

cmd/mbf/main_test.go

@@ -1,47 +0,0 @@
-package main
-
-import (
-	"net"
-	"os"
-	"testing"
-
-	"hakurei.app/internal/rosa"
-)
-
-func TestMain(m *testing.M) {
-	rosa.Native().DropCaches("", rosa.OptLLVMNoLTO)
-	os.Exit(m.Run())
-}
-
-func TestCureAll(t *testing.T) {
-	t.Parallel()
-	const env = "ROSA_TEST_DAEMON"
-
-	if !testing.Verbose() {
-		t.Skip("verbose flag not set")
-	}
-
-	pathname, ok := os.LookupEnv(env)
-	if !ok {
-		t.Skip(env + " not set")
-	}
-
-	addr := net.UnixAddr{Net: "unix", Name: pathname}
-	t.Cleanup(func() {
-		if t.Failed() {
-			if err := abortRemote(t.Context(), &addr, false); err != nil {
-				t.Fatal(err)
-			}
-		}
-	})
-
-	for _, handle := range rosa.Native().Collect() {
-		_, a := rosa.Native().Std().MustLoad(handle)
-		t.Run(handle.String(), func(t *testing.T) {
-			_, err := cureRemote(t.Context(), &addr, a, 0)
-			if err != nil {
-				t.Error(err)
-			}
-		})
-	}
-}

cmd/pkgserver/api.go

@@ -1,8 +1,6 @@
-// Package pkgserver implements the package metadata service backend.
-package pkgserver
+package main
 
 import (
-	"context"
 	"encoding/json"
 	"log"
 	"net/http"
@@ -10,7 +8,6 @@ import (
 	"path"
 	"strconv"
 	"sync"
-	"time"
 
 	"hakurei.app/internal/info"
 	"hakurei.app/internal/rosa"
@@ -30,7 +27,7 @@ var (
 // handleInfo writes constant system information.
 func handleInfo(w http.ResponseWriter, _ *http.Request) {
 	infoPayloadOnce.Do(func() {
-		infoPayload.Count = len(rosa.Native().Collect())
+		infoPayload.Count = int(rosa.PresetUnexportedStart)
 		infoPayload.HakureiVersion = info.Version()
 	})
 	// TODO(mae): cache entire response if no additional fields are planned
@@ -91,7 +88,7 @@ func (index *packageIndex) handleGet(w http.ResponseWriter, r *http.Request) {
 	if err != nil || i >= len(index.sorts[0]) || i < 0 {
 		http.Error(
 			w, "index must be an integer between 0 and "+
-				strconv.Itoa(len(index.sorts[0])-1),
+				strconv.Itoa(int(rosa.PresetUnexportedStart-1)),
 			http.StatusBadRequest,
 		)
 		return
@@ -125,7 +122,7 @@ func (index *packageIndex) handleSearch(w http.ResponseWriter, r *http.Request)
 	if err != nil || i >= len(index.sorts[0]) || i < 0 {
 		http.Error(
 			w, "index must be an integer between 0 and "+
-				strconv.Itoa(len(index.sorts[0])-1),
+				strconv.Itoa(int(rosa.PresetUnexportedStart-1)),
 			http.StatusBadRequest,
 		)
 		return
@@ -161,29 +158,6 @@ func (index *packageIndex) registerAPI(mux *http.ServeMux) {
 	mux.HandleFunc("GET /status/", index.newStatusHandler(true))
 }
 
-// Register arranges for mux to service API requests.
-func Register(ctx context.Context, mux *http.ServeMux, report *rosa.Report) error {
-	var index packageIndex
-	index.search = make(searchCache)
-	if err := index.populate(report); err != nil {
-		return err
-	}
-	ticker := time.NewTicker(1 * time.Minute)
-	go func() {
-		for {
-			select {
-			case <-ctx.Done():
-				ticker.Stop()
-				return
-			case <-ticker.C:
-				index.search.clean()
-			}
-		}
-	}()
-	index.registerAPI(mux)
-	return nil
-}
-
 // writeAPIPayload sets headers common to API responses and encodes payload as
 // JSON for the response body.
 func writeAPIPayload(w http.ResponseWriter, payload any) {

cmd/pkgserver/api_test.go

@@ -1,8 +1,9 @@
-package pkgserver
+package main
 
 import (
 	"net/http"
 	"net/http/httptest"
+	"slices"
 	"strconv"
 	"testing"
 
@@ -31,7 +32,7 @@ func TestAPIInfo(t *testing.T) {
 	checkPayload(t, resp, struct {
 		Count          int    `json:"count"`
 		HakureiVersion string `json:"hakurei_version"`
-	}{len(rosa.Native().Collect()), info.Version()})
+	}{int(rosa.PresetUnexportedStart), info.Version()})
 }
 
 func TestAPIGet(t *testing.T) {
@@ -92,12 +93,11 @@ func TestAPIGet(t *testing.T) {
 		)
 	})
 
-	count := len(rosa.Native().Collect())
 	t.Run("index", func(t *testing.T) {
 		t.Parallel()
 		checkValidate(
-			t, "limit=1&sort=0&index", 0, count-1,
-			"index must be an integer between 0 and "+strconv.Itoa(count-1),
+			t, "limit=1&sort=0&index", 0, int(rosa.PresetUnexportedStart-1),
+			"index must be an integer between 0 and "+strconv.Itoa(int(rosa.PresetUnexportedStart-1)),
 		)
 	})
 
@@ -108,4 +108,76 @@ func TestAPIGet(t *testing.T) {
 			"sort must be an integer between 0 and "+strconv.Itoa(int(sortOrderEnd)),
 		)
 	})
+
+	checkWithSuffix := func(name, suffix string, want []*metadata) {
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			w := newRequest(suffix)
+			resp := w.Result()
+			checkStatus(t, resp, http.StatusOK)
+			checkAPIHeader(t, w.Header())
+			checkPayloadFunc(t, resp, func(got *struct {
+				Count  int         `json:"count"`
+				Values []*metadata `json:"values"`
+			}) bool {
+				return got.Count == len(want) &&
+					slices.EqualFunc(got.Values, want, func(a, b *metadata) bool {
+						return (a.Version == b.Version ||
+							a.Version == rosa.Unversioned ||
+							b.Version == rosa.Unversioned) &&
+							a.HasReport == b.HasReport &&
+							a.Name == b.Name &&
+							a.Description == b.Description &&
+							a.Website == b.Website
+					})
+			})
+
+		})
+	}
+
+	checkWithSuffix("declarationAscending", "?limit=2&index=0&sort=0", []*metadata{
+		{
+			Metadata: rosa.GetMetadata(0),
+			Version:  rosa.Std.Version(0),
+		},
+		{
+			Metadata: rosa.GetMetadata(1),
+			Version:  rosa.Std.Version(1),
+		},
+	})
+	checkWithSuffix("declarationAscending offset", "?limit=3&index=5&sort=0", []*metadata{
+		{
+			Metadata: rosa.GetMetadata(5),
+			Version:  rosa.Std.Version(5),
+		},
+		{
+			Metadata: rosa.GetMetadata(6),
+			Version:  rosa.Std.Version(6),
+		},
+		{
+			Metadata: rosa.GetMetadata(7),
+			Version:  rosa.Std.Version(7),
+		},
+	})
+	checkWithSuffix("declarationDescending", "?limit=3&index=0&sort=1", []*metadata{
+		{
+			Metadata: rosa.GetMetadata(rosa.PresetUnexportedStart - 1),
+			Version:  rosa.Std.Version(rosa.PresetUnexportedStart - 1),
+		},
+		{
+			Metadata: rosa.GetMetadata(rosa.PresetUnexportedStart - 2),
+			Version:  rosa.Std.Version(rosa.PresetUnexportedStart - 2),
+		},
+		{
+			Metadata: rosa.GetMetadata(rosa.PresetUnexportedStart - 3),
+			Version:  rosa.Std.Version(rosa.PresetUnexportedStart - 3),
+		},
+	})
+	checkWithSuffix("declarationDescending offset", "?limit=1&index=37&sort=1", []*metadata{
+		{
+			Metadata: rosa.GetMetadata(rosa.PresetUnexportedStart - 38),
+			Version:  rosa.Std.Version(rosa.PresetUnexportedStart - 38),
+		},
+	})
 }

cmd/pkgserver/index.go

@@ -1,4 +1,4 @@
-package pkgserver
+package main
 
 import (
 	"cmp"
@@ -23,7 +23,7 @@ const (
 
 // packageIndex refers to metadata by name and various sort orders.
 type packageIndex struct {
-	sorts  [sortOrderEnd + 1][]*metadata
+	sorts  [sortOrderEnd + 1][rosa.PresetUnexportedStart]*metadata
 	names  map[string]*metadata
 	search searchCache
 	// Taken from [rosa.Report] if available.
@@ -32,11 +32,11 @@ type packageIndex struct {
 
 // metadata holds [rosa.Metadata] extended with additional information.
 type metadata struct {
-	handle rosa.ArtifactH
+	p rosa.PArtifact
 	*rosa.Metadata
 
-	// Copied from [rosa.Metadata], [rosa.Unversioned] is equivalent to the zero
-	// value. Otherwise, the zero value is invalid.
+	// Populated via [rosa.Toolchain.Version], [rosa.Unversioned] is equivalent
+	// to the zero value. Otherwise, the zero value is invalid.
 	Version string `json:"version,omitempty"`
 	// Output data size, available if present in report.
 	Size int64 `json:"size,omitempty"`
@@ -50,23 +50,20 @@ type metadata struct {
 }
 
 // populate deterministically populates packageIndex, optionally with a report.
-func (index *packageIndex) populate(report *rosa.Report) (err error) {
+func (index *packageIndex) populate(cache *pkg.Cache, report *rosa.Report) (err error) {
 	if report != nil {
 		defer report.HandleAccess(&err)()
 		index.handleAccess = report.HandleAccess
 	}
 
-	handles := rosa.Native().Collect()
-	work := make([]*metadata, len(handles))
+	var work [rosa.PresetUnexportedStart]*metadata
 	index.names = make(map[string]*metadata)
-	ir := pkg.NewIR()
-	for i, handle := range handles {
-		meta, a := rosa.Native().Std().MustLoad(handle)
+	for p := range rosa.PresetUnexportedStart {
 		m := metadata{
-			handle: handle,
+			p: p,
 
-			Metadata: meta,
-			Version:  meta.Version,
+			Metadata: rosa.GetMetadata(p),
+			Version:  rosa.Std.Version(p),
 		}
 		if m.Version == "" {
 			return errors.New("invalid version from " + m.Name)
@@ -75,33 +72,33 @@ func (index *packageIndex) populate(report *rosa.Report) (err error) {
 			m.Version = ""
 		}
 
-		if report != nil {
-			id := ir.Ident(a)
+		if cache != nil && report != nil {
+			id := cache.Ident(rosa.Std.Load(p))
 			m.ids = pkg.Encode(id.Value())
 			m.status, m.Size = report.ArtifactOf(id)
 			m.HasReport = m.Size >= 0
 		}
 
-		work[i] = &m
+		work[p] = &m
 		index.names[m.Name] = &m
 	}
 
 	index.sorts[declarationAscending] = work
-	index.sorts[declarationDescending] = slices.Clone(work)
+	index.sorts[declarationDescending] = work
 	slices.Reverse(index.sorts[declarationDescending][:])
 
-	index.sorts[nameAscending] = slices.Clone(work)
+	index.sorts[nameAscending] = work
 	slices.SortFunc(index.sorts[nameAscending][:], func(a, b *metadata) int {
 		return strings.Compare(a.Name, b.Name)
 	})
-	index.sorts[nameDescending] = slices.Clone(index.sorts[nameAscending])
+	index.sorts[nameDescending] = index.sorts[nameAscending]
 	slices.Reverse(index.sorts[nameDescending][:])
 
-	index.sorts[sizeAscending] = slices.Clone(work)
+	index.sorts[sizeAscending] = work
 	slices.SortFunc(index.sorts[sizeAscending][:], func(a, b *metadata) int {
 		return cmp.Compare(a.Size, b.Size)
 	})
-	index.sorts[sizeDescending] = slices.Clone(index.sorts[sizeAscending])
+	index.sorts[sizeDescending] = index.sorts[sizeAscending]
 	slices.Reverse(index.sorts[sizeDescending][:])
 
 	return

cmd/pkgserver/main.go

@@ -0,0 +1,114 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"hakurei.app/check"
+	"hakurei.app/command"
+	"hakurei.app/internal/pkg"
+	"hakurei.app/internal/rosa"
+	"hakurei.app/message"
+)
+
+const shutdownTimeout = 15 * time.Second
+
+func main() {
+	log.SetFlags(0)
+	log.SetPrefix("pkgserver: ")
+
+	var (
+		flagBaseDir string
+		flagAddr    string
+	)
+
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
+	defer stop()
+	msg := message.New(log.Default())
+
+	c := command.New(os.Stderr, log.Printf, "pkgserver", func(args []string) error {
+		var (
+			cache  *pkg.Cache
+			report *rosa.Report
+		)
+		switch len(args) {
+		case 0:
+			break
+
+		case 1:
+			baseDir, err := check.NewAbs(flagBaseDir)
+			if err != nil {
+				return err
+			}
+
+			cache, err = pkg.Open(ctx, msg, 0, 0, baseDir)
+			if err != nil {
+				return err
+			}
+			defer cache.Close()
+
+			report, err = rosa.OpenReport(args[0])
+			if err != nil {
+				return err
+			}
+
+		default:
+			return errors.New("pkgserver requires 1 argument")
+
+		}
+
+		var index packageIndex
+		index.search = make(searchCache)
+		if err := index.populate(cache, report); err != nil {
+			return err
+		}
+		ticker := time.NewTicker(1 * time.Minute)
+		go func() {
+			for {
+				select {
+				case <-ctx.Done():
+					ticker.Stop()
+					return
+				case <-ticker.C:
+					index.search.clean()
+				}
+			}
+		}()
+		var mux http.ServeMux
+		uiRoutes(&mux)
+		index.registerAPI(&mux)
+		server := http.Server{
+			Addr:    flagAddr,
+			Handler: &mux,
+		}
+		go func() {
+			<-ctx.Done()
+			c, cancel := context.WithTimeout(context.Background(), shutdownTimeout)
+			defer cancel()
+			if err := server.Shutdown(c); err != nil {
+				log.Fatal(err)
+			}
+		}()
+		return server.ListenAndServe()
+	}).Flag(
+		&flagBaseDir,
+		"b", command.StringFlag(""),
+		"base directory for cache",
+	).Flag(
+		&flagAddr,
+		"addr", command.StringFlag(":8067"),
+		"TCP network address to listen on",
+	)
+	c.MustParse(os.Args[1:], func(err error) {
+		if errors.Is(err, http.ErrServerClosed) {
+			os.Exit(0)
+		}
+		log.Fatal(err)
+	})
+}

cmd/pkgserver/main_test.go

@@ -1,4 +1,4 @@
-package pkgserver
+package main
 
 import (
 	"bytes"
@@ -15,7 +15,7 @@ func newIndex(t *testing.T) *packageIndex {
 	t.Helper()
 
 	var index packageIndex
-	if err := index.populate(nil); err != nil {
+	if err := index.populate(nil, nil); err != nil {
 		t.Fatalf("populate: error = %v", err)
 	}
 	return &index

cmd/pkgserver/search.go

@@ -1,4 +1,4 @@
-package pkgserver
+package main
 
 import (
 	"cmp"
@@ -74,7 +74,7 @@ func (s *searchCache) clean() {
 }
 func indexsum(in [][]int) int {
 	sum := 0
-	for i := range in {
+	for i := 0; i < len(in); i++ {
 		sum += in[i][1] - in[i][0]
 	}
 	return sum

cmd/pkgserver/ui.go

@@ -0,0 +1,33 @@
+package main
+
+import "net/http"
+
+func serveWebUI(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	w.Header().Set("Pragma", "no-cache")
+	w.Header().Set("Expires", "0")
+	w.Header().Set("X-Content-Type-Options", "nosniff")
+	w.Header().Set("X-XSS-Protection", "1")
+	w.Header().Set("X-Frame-Options", "DENY")
+
+	http.ServeFileFS(w, r, content, "ui/index.html")
+}
+func serveStaticContent(w http.ResponseWriter, r *http.Request) {
+	switch r.URL.Path {
+	case "/static/style.css":
+		http.ServeFileFS(w, r, content, "ui/static/style.css")
+	case "/favicon.ico":
+		http.ServeFileFS(w, r, content, "ui/static/favicon.ico")
+	case "/static/index.js":
+		http.ServeFileFS(w, r, content, "ui/static/index.js")
+	default:
+		http.NotFound(w, r)
+
+	}
+}
+
+func uiRoutes(mux *http.ServeMux) {
+	mux.HandleFunc("GET /{$}", serveWebUI)
+	mux.HandleFunc("GET /favicon.ico", serveStaticContent)
+	mux.HandleFunc("GET /static/", serveStaticContent)
+}

cmd/pkgserver/ui/index.html

@@ -3,13 +3,12 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <link rel="stylesheet" href="style.css">
-    <link rel="icon" href="https://hakurei.app/favicon.ico"/>
-    <title>Rosa OS Packages</title>
-    <script src="index.js"></script>
+    <link rel="stylesheet" href="static/style.css">
+    <title>Hakurei PkgServer</title>
+    <script src="static/index.js"></script>
 </head>
 <body>
-<h1>Rosa OS Packages</h1>
+<h1>Hakurei PkgServer</h1>
 <div class="top-controls" id="top-controls-regular">
     <p>Showing entries <span id="entry-counter"></span>.</p>
     <span id="search-bar">
@@ -55,4 +54,4 @@
 </footer>
 <script>main();</script>
 </body>
-</html>
+</html>

cmd/pkgserver/ui_full.go

@@ -0,0 +1,9 @@
+//go:build frontend
+
+package main
+
+import "embed"
+
+//go:generate tsc -p ui
+//go:embed ui/*
+var content embed.FS

cmd/pkgserver/ui_stub.go

@@ -1,7 +1,7 @@
 //go:build !frontend
 
-package ui
+package main
 
 import "testing/fstest"
 
-var static fstest.MapFS
+var content fstest.MapFS

cmd/sharefs/fuse.go

@@ -508,8 +508,8 @@ func _main(s ...string) (exitCode int) {
 
 		if !z.AllowOrphan {
 			if err := z.Wait(); err != nil {
-				exitError, ok := errors.AsType[*exec.ExitError](err)
-				if !ok || exitError == nil {
+				var exitError *exec.ExitError
+				if !errors.As(err, &exitError) || exitError == nil {
 					log.Println(err)
 					return 5
 				}

cmd/sharefs/test/configuration.nix

@@ -20,14 +20,11 @@
   };
 
   virtualisation = {
-    # Hopefully reduces spurious test failures:
-    memorySize = if pkgs.stdenv.hostPlatform.is32bit then 2046 else 8192;
-
     diskSize = 6 * 1024;
 
     qemu.options = [
       # Increase test performance:
-      "-smp 16"
+      "-smp 8"
     ];
   };
 

cmd/sharefs/test/default.nix

@@ -28,7 +28,7 @@ testers.nixosTest {
         # For go tests:
         (pkgs.writeShellScriptBin "sharefs-workload-hakurei-tests" ''
           cp -r "${self.packages.${system}.hakurei.src}" "/sdcard/hakurei" && cd "/sdcard/hakurei"
-          ${fhs}/bin/hakurei-fhs -c 'ROSA_SKIP_BINFMT=1 CC="clang -O3 -Werror" go test ./...'
+          ${fhs}/bin/hakurei-fhs -c 'CC="clang -O3 -Werror" go test ./...'
         '')
       ];
 

command/parse.go

@@ -91,8 +91,8 @@ func (n *node) MustParse(arguments []string, handleError func(error)) {
 	case ErrEmptyTree:
 		os.Exit(1)
 	default:
-		flagError, ok := errors.AsType[FlagError](err)
-		if !ok { // returned by HandlerFunc
+		var flagError FlagError
+		if !errors.As(err, &flagError) { // returned by HandlerFunc
 			handleError(err)
 			os.Exit(1)
 		}

container/binfmt.go

@@ -1,46 +0,0 @@
-package container
-
-import (
-	"strings"
-	"unsafe"
-
-	"hakurei.app/check"
-)
-
-// escapeBinfmt escapes magic/mask sequences in a [BinfmtEntry].
-func escapeBinfmt(buf *strings.Builder, s string) string {
-	const lowerhex = "0123456789abcdef"
-
-	buf.Reset()
-	for _, c := range unsafe.Slice(unsafe.StringData(s), len(s)) {
-		switch c {
-		case 0, '\\', ':':
-			buf.WriteString(`\x`)
-			buf.WriteByte(lowerhex[c>>4])
-			buf.WriteByte(lowerhex[c&0xf])
-
-		default:
-			buf.WriteByte(c)
-		}
-	}
-	return buf.String()
-}
-
-// BinfmtEntry is an entry to be registered by the init process.
-type BinfmtEntry struct {
-	// The offset of the magic/mask in the file, counted in bytes.
-	Offset byte
-	// The byte sequence binfmt_misc is matching for.
-	Magic string
-	// An (optional, defaults to all 0xff) mask.
-	Mask string
-	// The program that should be invoked with the binary as first argument.
-	Interpreter *check.Absolute
-}
-
-// Valid returns whether e can be registered into the kernel.
-func (e *BinfmtEntry) Valid() bool {
-	return e != nil &&
-		int(e.Offset)+max(len(e.Magic), len(e.Mask)) < 128 &&
-		e.Interpreter != nil && len(e.Interpreter.String()) < 128
-}

container/binfmt_test.go

@@ -1,62 +0,0 @@
-package container
-
-import (
-	"strings"
-	"testing"
-
-	"hakurei.app/fhs"
-)
-
-func TestEscapeBinfmt(t *testing.T) {
-	t.Parallel()
-
-	testCases := []struct {
-		name  string
-		magic string
-		want  string
-	}{
-		{"packed DOS applications", "\x0eDEX", "\x0eDEX"},
-
-		{"riscv64 magic",
-			"\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00",
-			"\x7fELF\x02\x01\x01\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\x02\\x00\xf3\\x00"},
-		{"riscv64 mask",
-			"\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff",
-			"\xff\xff\xff\xff\xff\xff\xff\\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			t.Parallel()
-
-			got := escapeBinfmt(new(strings.Builder), tc.magic)
-			if got != tc.want {
-				t.Errorf("escapeBinfmt: %q, want %q", got, tc.want)
-			}
-		})
-	}
-}
-
-func TestBinfmtEntry(t *testing.T) {
-	t.Parallel()
-
-	testCases := []struct {
-		name  string
-		e     BinfmtEntry
-		valid bool
-	}{
-		{"zero", BinfmtEntry{}, false},
-		{"large offset", BinfmtEntry{Offset: 128}, false},
-		{"long magic", BinfmtEntry{Magic: strings.Repeat("\x00", 128)}, false},
-		{"long mask", BinfmtEntry{Mask: strings.Repeat("\x00", 128)}, false},
-		{"valid", BinfmtEntry{Interpreter: fhs.AbsRoot}, true},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			t.Parallel()
-
-			if tc.e.Valid() != tc.valid {
-				t.Errorf("Valid: %v", !tc.valid)
-			}
-		})
-	}
-}

container/capability.go

@@ -18,7 +18,6 @@ const (
 	CAP_SETPCAP      = 0x8
 	CAP_NET_ADMIN    = 0xc
 	CAP_DAC_OVERRIDE = 0x1
-	CAP_SETFCAP      = 0x1f
 )
 
 type (

container/container.go

@@ -67,9 +67,6 @@ type (
 		// Copied to the underlying [exec.Cmd].
 		WaitDelay time.Duration
 
-		// Suppress verbose output of init.
-		Quiet bool
-
 		cmd *exec.Cmd
 		ctx context.Context
 		msg message.Msg
@@ -91,20 +88,12 @@ type (
 		// Time to wait for processes lingering after the initial process terminates.
 		AdoptWaitDelay time.Duration
 
-		// Map uid/gid 0 in the init process. Requires [FstypeProc] attached to
-		// [fhs.Proc] in the container filesystem.
-		InitAsRoot bool
 		// Mapped Uid in user namespace.
 		Uid int
 		// Mapped Gid in user namespace.
 		Gid int
 		// Hostname value in UTS namespace.
 		Hostname string
-		// Register binfmt_misc entries.
-		Binfmt []BinfmtEntry
-		// Alternative pathname to attach binfmt_misc filesystem. The zero value
-		// requires [FstypeProc] to be made available at [fhs.Proc].
-		BinfmtPath *check.Absolute
 		// Sequential container setup ops.
 		*Ops
 
@@ -154,8 +143,11 @@ func (e *StartError) Error() string {
 		return e.Step
 	}
 
-	if se, ok := errors.AsType[*os.SyscallError](e.Err); ok && se != nil {
-		return e.Step + " " + se.Error()
+	{
+		var syscallError *os.SyscallError
+		if errors.As(e.Err, &syscallError) && syscallError != nil {
+			return e.Step + " " + syscallError.Error()
+		}
 	}
 
 	return e.Step + ": " + e.Err.Error()
@@ -221,9 +213,6 @@ func (p *Container) Start() error {
 	if p.cmd.Process != nil {
 		return errors.New("container: already started")
 	}
-	if !p.InitAsRoot && len(p.Binfmt) > 0 {
-		return errors.New("container: init as root required, but not enabled")
-	}
 
 	if err := ensureCloseOnExec(); err != nil {
 		return err
@@ -294,18 +283,6 @@ func (p *Container) Start() error {
 	if !p.HostNet {
 		p.cmd.SysProcAttr.Cloneflags |= CLONE_NEWNET
 	}
-	if p.InitAsRoot {
-		p.cmd.SysProcAttr.AmbientCaps = append(p.cmd.SysProcAttr.AmbientCaps,
-			// mappings during init as root
-			CAP_SETFCAP,
-		)
-
-		if !p.SeccompDisable &&
-			len(p.SeccompRules) == 0 &&
-			p.SeccompPresets&std.PresetDenyNS != 0 {
-			return errors.New("container: as root requires late namespace creation")
-		}
-	}
 
 	// place setup pipe before user supplied extra files, this is later restored by init
 	if r, w, err := os.Pipe(); err != nil {
@@ -365,6 +342,8 @@ func (p *Container) Start() error {
 						Err:    ENOSYS,
 						Origin: true,
 					}
+				} else {
+					p.msg.Verbosef("landlock abi version %d", abi)
 				}
 
 				if rulesetFd, err := rulesetAttr.Create(0); err != nil {
@@ -374,6 +353,7 @@ func (p *Container) Start() error {
 						Err:   err,
 					}
 				} else {
+					p.msg.Verbosef("enforcing landlock ruleset %s", rulesetAttr)
 					if err = landlock.RestrictSelf(rulesetFd, 0); err != nil {
 						_ = Close(rulesetFd)
 						return &StartError{
@@ -430,6 +410,7 @@ func (p *Container) Start() error {
 				}
 			}
 
+			p.msg.Verbose("starting container init")
 			if err := p.cmd.Start(); err != nil {
 				return &StartError{
 					Step:        "start container init",
@@ -500,6 +481,7 @@ func (p *Container) Serve() (err error) {
 			}
 
 		case <-done:
+			p.msg.Verbose("setup payload took", time.Since(t))
 			return
 		}
 	}(p.setup[1])
@@ -509,7 +491,7 @@ func (p *Container) Serve() (err error) {
 		Getuid(),
 		Getgid(),
 		len(p.ExtraFiles),
-		p.msg.IsVerbose() && !p.Quiet,
+		p.msg.IsVerbose(),
 	})
 }
 

container/container_test.go

@@ -16,8 +16,6 @@ import (
 	"strings"
 	"syscall"
 	"testing"
-	"time"
-	"unsafe"
 
 	"hakurei.app/check"
 	"hakurei.app/command"
@@ -235,9 +233,6 @@ func earlyMnt(mnt ...*vfs.MountInfoEntry) func(*testing.T, context.Context) []*v
 	return func(*testing.T, context.Context) []*vfs.MountInfoEntry { return mnt }
 }
 
-//go:linkname toHost hakurei.app/container.toHost
-func toHost(name string) string
-
 var containerTestCases = []struct {
 	name    string
 	filter  bool
@@ -337,15 +332,13 @@ var containerTestCases = []struct {
 		func(t *testing.T, ctx context.Context) []*vfs.MountInfoEntry {
 			return []*vfs.MountInfoEntry{
 				ent("/", hst.PrivateTmp, "rw", "overlay", "overlay",
-					"rw"+
-						",lowerdir+="+
-						toHost(ctx.Value(testVal("lower0")).(*check.Absolute).String())+
-						",lowerdir+="+
-						toHost(ctx.Value(testVal("lower1")).(*check.Absolute).String())+
+					"rw,lowerdir="+
+						container.InternalToHostOvlEscape(ctx.Value(testVal("lower0")).(*check.Absolute).String())+":"+
+						container.InternalToHostOvlEscape(ctx.Value(testVal("lower1")).(*check.Absolute).String())+
 						",upperdir="+
-						toHost(ctx.Value(testVal("upper")).(*check.Absolute).String())+
+						container.InternalToHostOvlEscape(ctx.Value(testVal("upper")).(*check.Absolute).String())+
 						",workdir="+
-						toHost(ctx.Value(testVal("work")).(*check.Absolute).String())+
+						container.InternalToHostOvlEscape(ctx.Value(testVal("work")).(*check.Absolute).String())+
 						",redirect_dir=nofollow,uuid=on,userxattr"),
 			}
 		},
@@ -395,11 +388,9 @@ var containerTestCases = []struct {
 		func(t *testing.T, ctx context.Context) []*vfs.MountInfoEntry {
 			return []*vfs.MountInfoEntry{
 				ent("/", hst.PrivateTmp, "rw", "overlay", "overlay",
-					"ro"+
-						",lowerdir+="+
-						toHost(ctx.Value(testVal("lower0")).(*check.Absolute).String())+
-						",lowerdir+="+
-						toHost(ctx.Value(testVal("lower1")).(*check.Absolute).String())+
+					"ro,lowerdir="+
+						container.InternalToHostOvlEscape(ctx.Value(testVal("lower0")).(*check.Absolute).String())+":"+
+						container.InternalToHostOvlEscape(ctx.Value(testVal("lower1")).(*check.Absolute).String())+
 						",redirect_dir=nofollow,userxattr"),
 			}
 		},
@@ -409,11 +400,39 @@ var containerTestCases = []struct {
 func TestContainer(t *testing.T) {
 	t.Parallel()
 
-	var suffix string
-runTests:
+	t.Run("cancel", testContainerCancel(nil, func(t *testing.T, c *container.Container) {
+		wantErr := context.Canceled
+		wantExitCode := 0
+		if err := c.Wait(); !reflect.DeepEqual(err, wantErr) {
+			if m, ok := container.InternalMessageFromError(err); ok {
+				t.Error(m)
+			}
+			t.Errorf("Wait: error = %#v, want %#v", err, wantErr)
+		}
+		if ps := c.ProcessState(); ps == nil {
+			t.Errorf("ProcessState unexpectedly returned nil")
+		} else if code := ps.ExitCode(); code != wantExitCode {
+			t.Errorf("ExitCode: %d, want %d", code, wantExitCode)
+		}
+	}))
+
+	t.Run("forward", testContainerCancel(func(c *container.Container) {
+		c.ForwardCancel = true
+	}, func(t *testing.T, c *container.Container) {
+		var exitError *exec.ExitError
+		if err := c.Wait(); !errors.As(err, &exitError) {
+			if m, ok := container.InternalMessageFromError(err); ok {
+				t.Error(m)
+			}
+			t.Errorf("Wait: error = %v", err)
+		}
+		if code := exitError.ExitCode(); code != blockExitCodeInterrupt {
+			t.Errorf("ExitCode: %d, want %d", code, blockExitCodeInterrupt)
+		}
+	}))
+
 	for i, tc := range containerTestCases {
-		_suffix := suffix
-		t.Run(tc.name+_suffix, func(t *testing.T) {
+		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 
 			wantOps, wantOpsCtx := tc.ops(t)
@@ -437,8 +456,6 @@ runTests:
 			c.SeccompDisable = !tc.filter
 			c.RetainSession = tc.session
 			c.HostNet = tc.net
-			c.InitAsRoot = _suffix != ""
-			c.Env = append(c.Env, "HAKUREI_TEST_SUFFIX="+_suffix)
 			if info.CanDegrade {
 				if _, err := landlock.GetABI(); err != nil {
 					if !errors.Is(err, syscall.ENOSYS) {
@@ -448,9 +465,6 @@ runTests:
 					t.Log("Landlock LSM is unavailable, enabling HostAbstract")
 				}
 			}
-			if c.InitAsRoot {
-				c.SeccompPresets &= ^std.PresetDenyNS
-			}
 
 			c.
 				Readonly(check.MustAbs(pathReadonly), 0755).
@@ -519,11 +533,6 @@ runTests:
 			}
 		})
 	}
-
-	if suffix == "" {
-		suffix = " as root"
-		goto runTests
-	}
 }
 
 func ent(root, target, vfsOptstr, fsType, source, fsOptstr string) *vfs.MountInfoEntry {
@@ -546,118 +555,49 @@ func hostnameFromTestCase(name string) string {
 }
 
 func testContainerCancel(
-	t *testing.T,
 	containerExtra func(c *container.Container),
-	waitCheck func(ps *os.ProcessState, waitErr error),
-) {
-	ctx, cancel := context.WithCancel(t.Context())
-
-	c := helperNewContainer(ctx, "block")
-	c.Stdout, c.Stderr = os.Stdout, os.Stderr
-	if containerExtra != nil {
-		containerExtra(c)
-	}
-
-	ready := make(chan struct{})
-	var waitErr error
-	r, w, err := os.Pipe()
-	if err != nil {
-		t.Fatalf("cannot pipe: %v", err)
-	}
-
-	c.ExtraFiles = append(c.ExtraFiles, w)
-	go func() {
-		defer close(ready)
-		if _, _err := r.Read(make([]byte, 1)); _err != nil {
-			panic(_err)
-		}
-	}()
-
-	if err = c.Start(); err != nil {
-		if m, ok := container.InternalMessageFromError(err); ok {
-			t.Fatal(m)
-		} else {
-			t.Fatalf("cannot start container: %v", err)
-		}
-	}
-
-	done := make(chan struct{})
-	go func() {
-		defer close(done)
-		waitErr = c.Wait()
-		_ = r.SetReadDeadline(time.Now())
-	}()
-
-	if err = c.Serve(); err != nil {
-		if m, ok := container.InternalMessageFromError(err); ok {
-			t.Error(m)
-		} else {
-			t.Errorf("cannot serve setup params: %v", err)
-		}
-	}
-	<-ready
-	cancel()
-	<-done
-	waitCheck(c.ProcessState(), waitErr)
-}
-
-func TestForward(t *testing.T) {
-	t.Parallel()
-
-	f := func(ps *os.ProcessState, waitErr error) {
-		var exitError *exec.ExitError
-		if !errors.As(waitErr, &exitError) {
-			if m, ok := container.InternalMessageFromError(waitErr); ok {
-				t.Error(m)
-			}
-			t.Errorf("Wait: error = %v", waitErr)
-		}
-		if code := exitError.ExitCode(); code != blockExitCodeInterrupt {
-			t.Errorf("ExitCode: %d, want %d", code, blockExitCodeInterrupt)
-		}
-	}
-	t.Run("direct", func(t *testing.T) {
+	waitCheck func(t *testing.T, c *container.Container),
+) func(t *testing.T) {
+	return func(t *testing.T) {
 		t.Parallel()
-		testContainerCancel(t, func(c *container.Container) {
-			c.ForwardCancel = true
-		}, f)
-	})
-	t.Run("as root", func(t *testing.T) {
-		testContainerCancel(t, func(c *container.Container) {
-			c.ForwardCancel = true
-			c.InitAsRoot = true
-			c.Proc(fhs.AbsProc)
-		}, f)
-	})
-}
+		ctx, cancel := context.WithCancel(t.Context())
 
-func TestCancel(t *testing.T) {
-	t.Parallel()
+		c := helperNewContainer(ctx, "block")
+		c.Stdout, c.Stderr = os.Stdout, os.Stderr
+		if containerExtra != nil {
+			containerExtra(c)
+		}
 
-	f := func(ps *os.ProcessState, waitErr error) {
-		wantErr := context.Canceled
-		if !reflect.DeepEqual(waitErr, wantErr) {
-			if m, ok := container.InternalMessageFromError(waitErr); ok {
+		ready := make(chan struct{})
+		if r, w, err := os.Pipe(); err != nil {
+			t.Fatalf("cannot pipe: %v", err)
+		} else {
+			c.ExtraFiles = append(c.ExtraFiles, w)
+			go func() {
+				defer close(ready)
+				if _, err = r.Read(make([]byte, 1)); err != nil {
+					panic(err.Error())
+				}
+			}()
+		}
+
+		if err := c.Start(); err != nil {
+			if m, ok := container.InternalMessageFromError(err); ok {
+				t.Fatal(m)
+			} else {
+				t.Fatalf("cannot start container: %v", err)
+			}
+		} else if err = c.Serve(); err != nil {
+			if m, ok := container.InternalMessageFromError(err); ok {
 				t.Error(m)
+			} else {
+				t.Errorf("cannot serve setup params: %v", err)
 			}
-			t.Errorf("Wait: error = %#v, want %#v", waitErr, wantErr)
-		}
-		if ps == nil {
-			t.Errorf("ProcessState unexpectedly returned nil")
-		} else if code := ps.ExitCode(); code != 0 {
-			t.Errorf("ExitCode: %d, want %d", code, 0)
 		}
+		<-ready
+		cancel()
+		waitCheck(t, c)
 	}
-	t.Run("direct", func(t *testing.T) {
-		t.Parallel()
-		testContainerCancel(t, nil, f)
-	})
-	t.Run("as root", func(t *testing.T) {
-		testContainerCancel(t, func(c *container.Container) {
-			c.InitAsRoot = true
-			c.Proc(fhs.AbsProc)
-		}, f)
-	})
 }
 
 func TestContainerString(t *testing.T) {
@@ -693,8 +633,6 @@ func init() {
 		})
 
 		c.Command("container", command.UsageInternal, func(args []string) error {
-			asRoot := os.Getenv("HAKUREI_TEST_SUFFIX") == " as root"
-
 			if len(args) != 1 {
 				return syscall.EINVAL
 			}
@@ -712,66 +650,6 @@ func init() {
 				return fmt.Errorf("gid: %d, want %d", gid, tc.gid)
 			}
 
-			// no attack surface increase during as root due to no_new_privs
-			var wantBounding uintptr = 1
-			asRootNot := " not"
-			if !asRoot {
-				wantBounding = 0
-				asRootNot = ""
-			}
-
-			const (
-				PR_CAP_AMBIENT        = 0x2f
-				PR_CAP_AMBIENT_IS_SET = 0x1
-			)
-			for i := range container.LastCap(nil) + 1 {
-				r, _, errno := syscall.Syscall(
-					syscall.SYS_PRCTL,
-					PR_CAP_AMBIENT,
-					PR_CAP_AMBIENT_IS_SET,
-					i,
-				)
-				if errno != 0 {
-					return os.NewSyscallError("prctl", errno)
-				}
-				if r != 0 {
-					return fmt.Errorf("capability %d in ambient set", i)
-				}
-
-				r, _, errno = syscall.Syscall(
-					syscall.SYS_PRCTL,
-					syscall.PR_CAPBSET_READ,
-					i,
-					0,
-				)
-				if errno != 0 {
-					return os.NewSyscallError("prctl", errno)
-				}
-				if r != wantBounding {
-					return fmt.Errorf("capability %d%s in bounding set", i, asRootNot)
-				}
-			}
-
-			const _LINUX_CAPABILITY_VERSION_3 = 0x20080522
-			var capData struct {
-				effective   uint32
-				permitted   uint32
-				inheritable uint32
-			}
-			if _, _, errno := syscall.Syscall(syscall.SYS_CAPGET, uintptr(unsafe.Pointer(&struct {
-				version uint32
-				pid     int32
-			}{_LINUX_CAPABILITY_VERSION_3, 0})), uintptr(unsafe.Pointer(&capData)), 0); errno != 0 {
-				return os.NewSyscallError("capget", errno)
-			}
-
-			if max(capData.effective, capData.permitted, capData.inheritable) != 0 {
-				return fmt.Errorf(
-					"effective = %d, permitted = %d, inheritable = %d",
-					capData.effective, capData.permitted, capData.inheritable,
-				)
-			}
-
 			wantHost := hostnameFromTestCase(tc.name)
 			if host, err := os.Hostname(); err != nil {
 				return fmt.Errorf("cannot get hostname: %v", err)
@@ -889,7 +767,7 @@ func TestMain(m *testing.M) {
 		}
 		c.MustParse(os.Args[1:], func(err error) {
 			if err != nil {
-				log.Fatal(err)
+				log.Fatal(err.Error())
 			}
 		})
 		return

container/dispatcher.go

@@ -65,8 +65,6 @@ type syscallDispatcher interface {
 	remount(msg message.Msg, target string, flags uintptr) error
 	// mountTmpfs provides mountTmpfs.
 	mountTmpfs(fsname, target string, flags uintptr, size int, perm os.FileMode) error
-	// mountOverlay provides mountOverlay.
-	mountOverlay(target string, options [][2]string) error
 	// ensureFile provides ensureFile.
 	ensureFile(name string, perm, pperm os.FileMode) error
 	// mustLoopback provides mustLoopback.
@@ -171,9 +169,6 @@ func (direct) remount(msg message.Msg, target string, flags uintptr) error {
 func (k direct) mountTmpfs(fsname, target string, flags uintptr, size int, perm os.FileMode) error {
 	return mountTmpfs(k, fsname, target, flags, size, perm)
 }
-func (k direct) mountOverlay(target string, options [][2]string) error {
-	return mountOverlay(target, options)
-}
 func (direct) ensureFile(name string, perm, pperm os.FileMode) error {
 	return ensureFile(name, perm, pperm)
 }

container/dispatcher_test.go

@@ -235,6 +235,8 @@ func checkOpBehaviour(t *testing.T, testCases []opBehaviourTestCase) {
 	})
 }
 
+func sliceAddr[S any](s []S) *[]S { return &s }
+
 func newCheckedFile(t *testing.T, name, wantData string, closeErr error) osFile {
 	f := &checkedOsFile{t: t, name: name, want: wantData, closeErr: closeErr}
 	// check happens in Close, and cleanup is not guaranteed to run, so relying
@@ -466,14 +468,6 @@ func (k *kstub) mountTmpfs(fsname, target string, flags uintptr, size int, perm
 		stub.CheckArg(k.Stub, "perm", perm, 4))
 }
 
-func (k *kstub) mountOverlay(target string, options [][2]string) error {
-	k.Helper()
-	return k.Expects("mountOverlay").Error(
-		stub.CheckArg(k.Stub, "target", target, 0),
-		stub.CheckArgReflect(k.Stub, "options", options, 1),
-	)
-}
-
 func (k *kstub) ensureFile(name string, perm, pperm os.FileMode) error {
 	k.Helper()
 	return k.Expects("ensureFile").Error(

container/errors.go

@@ -46,8 +46,9 @@ func messageFromError(err error) (m string, ok bool) {
 // While this is usable for pointer errors, such use should be avoided as nil
 // check is omitted.
 func messagePrefix[T error](prefix string, err error) (string, bool) {
-	if e, ok := errors.AsType[T](err); ok {
-		return prefix + e.Error(), true
+	var targetError T
+	if errors.As(err, &targetError) {
+		return prefix + targetError.Error(), true
 	}
 	return zeroString, false
 }
@@ -57,8 +58,9 @@ func messagePrefixP[V any, T interface {
 	*V
 	error
 }](prefix string, err error) (string, bool) {
-	if e, ok := errors.AsType[T](err); ok && e != nil {
-		return prefix + e.Error(), true
+	var targetError T
+	if errors.As(err, &targetError) && targetError != nil {
+		return prefix + targetError.Error(), true
 	}
 	return zeroString, false
 }
@@ -107,8 +109,8 @@ func optionalErrorUnwrap(err error) error {
 
 // errnoFallback returns the concrete errno from an error, or a [os.PathError] fallback.
 func errnoFallback(op, path string, err error) (syscall.Errno, *os.PathError) {
-	errno, ok := errors.AsType[syscall.Errno](err)
-	if !ok {
+	var errno syscall.Errno
+	if !errors.As(err, &errno) {
 		return 0, &os.PathError{Op: op, Path: path, Err: err}
 	}
 	return errno, nil
@@ -116,10 +118,6 @@ func errnoFallback(op, path string, err error) (syscall.Errno, *os.PathError) {
 
 // mount wraps syscall.Mount for error handling.
 func mount(source, target, fstype string, flags uintptr, data string) error {
-	if max(len(source), len(target), len(data))+1 > os.Getpagesize() {
-		return &MountError{source, target, fstype, flags, data, syscall.ENOMEM}
-	}
-
 	err := syscall.Mount(source, target, fstype, flags, data)
 	if err == nil {
 		return nil

container/init.go

@@ -11,13 +11,11 @@ import (
 	"path/filepath"
 	"slices"
 	"strconv"
-	"strings"
 	"sync"
 	"sync/atomic"
 	. "syscall"
 	"time"
 
-	"hakurei.app/check"
 	"hakurei.app/container/seccomp"
 	"hakurei.app/ext"
 	"hakurei.app/fhs"
@@ -184,33 +182,23 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 		cancel()
 	}
 
-	uid, gid := param.Uid, param.Gid
-	if param.InitAsRoot {
-		uid, gid = 0, 0
-	}
-
 	// write uid/gid map here so parent does not need to set dumpable
 	if err := k.setDumpable(ext.SUID_DUMP_USER); err != nil {
 		k.fatalf(msg, "cannot set SUID_DUMP_USER: %v", err)
 	}
-	if err := k.writeFile(
-		fhs.Proc+"self/uid_map",
-		[]byte(strconv.Itoa(uid)+" "+strconv.Itoa(param.HostUid)+" 1\n"),
-		0,
-	); err != nil {
+	if err := k.writeFile(fhs.Proc+"self/uid_map",
+		append([]byte{}, strconv.Itoa(param.Uid)+" "+strconv.Itoa(param.HostUid)+" 1\n"...),
+		0); err != nil {
 		k.fatalf(msg, "%v", err)
 	}
-	if err := k.writeFile(
-		fhs.Proc+"self/setgroups",
+	if err := k.writeFile(fhs.Proc+"self/setgroups",
 		[]byte("deny\n"),
-		0,
-	); err != nil && !os.IsNotExist(err) {
+		0); err != nil && !os.IsNotExist(err) {
 		k.fatalf(msg, "%v", err)
 	}
 	if err := k.writeFile(fhs.Proc+"self/gid_map",
-		[]byte(strconv.Itoa(gid)+" "+strconv.Itoa(param.HostGid)+" 1\n"),
-		0,
-	); err != nil {
+		append([]byte{}, strconv.Itoa(param.Gid)+" "+strconv.Itoa(param.HostGid)+" 1\n"...),
+		0); err != nil {
 		k.fatalf(msg, "%v", err)
 	}
 	if err := k.setDumpable(ext.SUID_DUMP_DISABLE); err != nil {
@@ -235,23 +223,6 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 	state := &setupState{process: make(map[int]WaitStatus), Params: &param.Params, Msg: msg, Context: ctx}
 	defer cancel()
 
-	if err := k.mount(SourceTmpfsRootfs, intermediateHostPath, FstypeTmpfs, MS_NODEV|MS_NOSUID, zeroString); err != nil {
-		k.fatalf(msg, "cannot mount intermediate root: %v", optionalErrorUnwrap(err))
-	}
-	if err := k.chdir(intermediateHostPath); err != nil {
-		k.fatalf(msg, "cannot enter intermediate host path: %v", err)
-	}
-
-	if len(param.Binfmt) > 0 {
-		for i, e := range param.Binfmt {
-			if pathname, err := k.evalSymlinks(e.Interpreter.String()); err != nil {
-				k.fatal(msg, err)
-			} else if param.Binfmt[i].Interpreter, err = check.NewAbs(pathname); err != nil {
-				k.fatal(msg, err)
-			}
-		}
-	}
-
 	/* early is called right before pivot_root into intermediate root;
 	this step is mostly for gathering information that would otherwise be
 	difficult to obtain via library functions after pivot_root, and
@@ -271,6 +242,13 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 		}
 	}
 
+	if err := k.mount(SourceTmpfsRootfs, intermediateHostPath, FstypeTmpfs, MS_NODEV|MS_NOSUID, zeroString); err != nil {
+		k.fatalf(msg, "cannot mount intermediate root: %v", optionalErrorUnwrap(err))
+	}
+	if err := k.chdir(intermediateHostPath); err != nil {
+		k.fatalf(msg, "cannot enter intermediate host path: %v", err)
+	}
+
 	if err := k.mkdir(sysrootDir, 0755); err != nil {
 		k.fatalf(msg, "%v", err)
 	}
@@ -307,48 +285,6 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 		}
 	}
 
-	if len(param.Binfmt) > 0 {
-		const interpreter = "/interpreter"
-
-		if param.BinfmtPath == nil {
-			param.BinfmtPath = fhs.AbsProcSys.Append("fs/binfmt_misc")
-		}
-		binfmt := sysrootPath + param.BinfmtPath.String()
-		if err := k.mkdirAll(binfmt, 0); err != nil {
-			k.fatal(msg, err)
-		}
-		if err := k.mount(
-			SourceBinfmtMisc,
-			binfmt,
-			FstypeBinfmtMisc,
-			MS_NOSUID|MS_NOEXEC|MS_NODEV,
-			zeroString,
-		); err != nil {
-			k.fatal(msg, err)
-		}
-
-		var buf strings.Builder
-		buf.Grow(1920)
-
-		register := binfmt + "/register"
-		for i, e := range param.Binfmt {
-			if err := k.symlink(hostPath+e.Interpreter.String(), interpreter); err != nil {
-				k.fatal(msg, err)
-			} else if err = k.writeFile(register, []byte(":"+
-				strconv.Itoa(i)+":"+
-				"M:"+
-				strconv.Itoa(int(e.Offset))+":"+
-				escapeBinfmt(&buf, e.Magic)+":"+
-				escapeBinfmt(&buf, e.Mask)+":"+
-				interpreter+":"+
-				"F"), 0); err != nil {
-				k.fatal(msg, err)
-			} else if err = k.remove(interpreter); err != nil {
-				k.fatal(msg, err)
-			}
-		}
-	}
-
 	// setup requiring host root complete at this point
 	if err := k.mount(hostDir, hostDir, zeroString, MS_SILENT|MS_REC|MS_PRIVATE, zeroString); err != nil {
 		k.fatalf(msg, "cannot make host root rprivate: %v", optionalErrorUnwrap(err))
@@ -387,19 +323,11 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 		}
 	}
 
-	var keepCaps []uintptr
-	if param.Privileged {
-		keepCaps = append(keepCaps, CAP_SYS_ADMIN, CAP_SETPCAP)
-	}
-	if param.InitAsRoot {
-		keepCaps = append(keepCaps, CAP_SETFCAP)
-	}
-
 	if err := k.capAmbientClearAll(); err != nil {
 		k.fatalf(msg, "cannot clear the ambient capability set: %v", err)
 	}
-	for i := range lastcap + 1 {
-		if slices.Contains(keepCaps, i) {
+	for i := uintptr(0); i <= lastcap; i++ {
+		if param.Privileged && i == CAP_SYS_ADMIN {
 			continue
 		}
 		if err := k.capBoundingSetDrop(i); err != nil {
@@ -408,23 +336,20 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 	}
 
 	var keep [2]uint32
-	for _, c := range keepCaps {
-		keep[capToIndex(c)] |= capToMask(c)
-	}
+	if param.Privileged {
+		keep[capToIndex(CAP_SYS_ADMIN)] |= capToMask(CAP_SYS_ADMIN)
 
+		if err := k.capAmbientRaise(CAP_SYS_ADMIN); err != nil {
+			k.fatalf(msg, "cannot raise CAP_SYS_ADMIN: %v", err)
+		}
+	}
 	if err := k.capset(
 		&capHeader{_LINUX_CAPABILITY_VERSION_3, 0},
-		&[2]capData{{keep[0], keep[0], keep[0]}, {keep[1], keep[1], keep[1]}},
+		&[2]capData{{0, keep[0], keep[0]}, {0, keep[1], keep[1]}},
 	); err != nil {
 		k.fatalf(msg, "cannot capset: %v", err)
 	}
 
-	for _, c := range keepCaps {
-		if err := k.capAmbientRaise(c); err != nil {
-			k.fatalf(msg, "cannot raise %#x: %v", c, err)
-		}
-	}
-
 	if !param.SeccompDisable {
 		rules := param.SeccompRules
 		if len(rules) == 0 { // non-empty rules slice always overrides presets
@@ -549,14 +474,6 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 	cmd.ExtraFiles = extraFiles
 	cmd.Dir = param.Dir.String()
 
-	if param.InitAsRoot {
-		cmd.SysProcAttr = &SysProcAttr{
-			Cloneflags:  CLONE_NEWUSER,
-			UidMappings: []SysProcIDMap{{ContainerID: param.Uid, HostID: 0, Size: 1}},
-			GidMappings: []SysProcIDMap{{ContainerID: param.Gid, HostID: 0, Size: 1}},
-		}
-	}
-
 	msg.Verbosef("starting initial process %s", param.Path)
 	if err := k.start(cmd); err != nil {
 		k.fatalf(msg, "%v", err)

container/init_test.go

@@ -95,7 +95,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -123,7 +123,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -152,7 +152,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -182,7 +182,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -213,7 +213,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -245,7 +245,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -279,7 +279,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -315,7 +315,7 @@ func TestInitEntrypoint(t *testing.T) {
 					Uid:            1 << 16,
 					Gid:            1 << 15,
 					Hostname:       "hakurei-check",
-					Ops:            new(make(Ops, 1)),
+					Ops:            (*Ops)(sliceAddr(make(Ops, 1))),
 					SeccompRules:   make([]std.NativeRule, 0),
 					SeccompPresets: std.PresetStrict,
 					RetainSession:  true,
@@ -332,8 +332,6 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("fatalf", stub.ExpectArgs{"invalid op at index %d", []any{0}}, nil, nil),
 				/* end early */
@@ -372,8 +370,6 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("fatalf", stub.ExpectArgs{"invalid op at index %d", []any{0}}, nil, nil),
 				/* end early */
@@ -412,8 +408,6 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", stub.UniqueError(61)),
 				call("fatalf", stub.ExpectArgs{"cannot prepare op at index %d: %v", []any{0, stub.UniqueError(61)}}, nil, nil),
@@ -453,8 +447,6 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", &os.PathError{Op: "readlink", Path: "/", Err: stub.UniqueError(60)}),
 				call("fatal", stub.ExpectArgs{[]any{"cannot readlink /: unique error 60 injected by the test suite"}}, nil, nil),
@@ -494,6 +486,9 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
+				/* begin early */
+				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
+				/* end early */
 				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, stub.UniqueError(58)),
 				call("fatalf", stub.ExpectArgs{"cannot mount intermediate root: %v", []any{stub.UniqueError(58)}}, nil, nil),
 			},
@@ -531,6 +526,9 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
+				/* begin early */
+				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
+				/* end early */
 				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
 				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, stub.UniqueError(56)),
 				call("fatalf", stub.ExpectArgs{"cannot enter intermediate host path: %v", []any{stub.UniqueError(56)}}, nil, nil),
@@ -569,11 +567,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, stub.UniqueError(54)),
 				call("fatalf", stub.ExpectArgs{"%v", []any{stub.UniqueError(54)}}, nil, nil),
 			},
@@ -611,11 +609,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, stub.UniqueError(52)),
 				call("fatalf", stub.ExpectArgs{"cannot bind sysroot: %v", []any{stub.UniqueError(52)}}, nil, nil),
@@ -654,11 +652,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, stub.UniqueError(50)),
@@ -698,11 +696,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -743,11 +741,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -789,11 +787,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -844,11 +842,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -899,11 +897,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -955,11 +953,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1012,11 +1010,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1071,11 +1069,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1131,11 +1129,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1192,11 +1190,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1254,11 +1252,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1317,11 +1315,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1381,11 +1379,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1446,11 +1444,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1512,11 +1510,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1586,11 +1584,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1624,6 +1622,7 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x5)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x6)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x7)}, nil, nil),
+				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x8)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x9)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xa)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xb)}, nil, nil),
@@ -1655,9 +1654,8 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x26)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x27)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x28)}, nil, nil),
-				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0x200100, 0x200100, 0x200100}, {0, 0, 0}}}, nil, nil),
 				call("capAmbientRaise", stub.ExpectArgs{uintptr(0x15)}, nil, stub.UniqueError(19)),
-				call("fatalf", stub.ExpectArgs{"cannot raise %#x: %v", []any{uintptr(0x15), stub.UniqueError(19)}}, nil, nil),
+				call("fatalf", stub.ExpectArgs{"cannot raise CAP_SYS_ADMIN: %v", []any{stub.UniqueError(19)}}, nil, nil),
 			},
 		}, nil},
 
@@ -1693,11 +1691,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1731,6 +1729,7 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x5)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x6)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x7)}, nil, nil),
+				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x8)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x9)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xa)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xb)}, nil, nil),
@@ -1762,7 +1761,8 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x26)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x27)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x28)}, nil, nil),
-				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0x200100, 0x200100, 0x200100}, {0, 0, 0}}}, nil, stub.UniqueError(17)),
+				call("capAmbientRaise", stub.ExpectArgs{uintptr(0x15)}, nil, nil),
+				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0, 0x200000, 0x200000}, {0, 0, 0}}}, nil, stub.UniqueError(17)),
 				call("fatalf", stub.ExpectArgs{"cannot capset: %v", []any{stub.UniqueError(17)}}, nil, nil),
 			},
 		}, nil},
@@ -1799,11 +1799,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -1837,6 +1837,7 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x5)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x6)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x7)}, nil, nil),
+				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x8)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x9)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xa)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xb)}, nil, nil),
@@ -1868,9 +1869,8 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x26)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x27)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x28)}, nil, nil),
-				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0x200100, 0x200100, 0x200100}, {0, 0, 0}}}, nil, nil),
 				call("capAmbientRaise", stub.ExpectArgs{uintptr(0x15)}, nil, nil),
-				call("capAmbientRaise", stub.ExpectArgs{uintptr(0x8)}, nil, nil),
+				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0, 0x200000, 0x200000}, {0, 0, 0}}}, nil, nil),
 				call("verbosef", stub.ExpectArgs{"resolving presets %#x", []any{std.FilterPreset(0xf)}}, nil, nil),
 				call("seccompLoad", stub.ExpectArgs{seccomp.Preset(0xf, 0), seccomp.ExportFlag(0)}, nil, stub.UniqueError(15)),
 				call("fatalf", stub.ExpectArgs{"cannot load syscall filter: %v", []any{stub.UniqueError(15)}}, nil, nil),
@@ -1908,11 +1908,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2032,11 +2032,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(4), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2132,11 +2132,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(4), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2232,11 +2232,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(4), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2323,11 +2323,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(4), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2418,11 +2418,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(4), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2520,11 +2520,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2659,11 +2659,11 @@ func TestInitEntrypoint(t *testing.T) {
 				call("sethostname", stub.ExpectArgs{[]byte("hakurei-check")}, nil, nil),
 				call("lastcap", stub.ExpectArgs{}, uintptr(40), nil),
 				call("mount", stub.ExpectArgs{"", "/", "", uintptr(0x8c000), ""}, nil, nil),
-				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
-				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				/* begin early */
 				call("evalSymlinks", stub.ExpectArgs{"/"}, "/", nil),
 				/* end early */
+				call("mount", stub.ExpectArgs{"rootfs", "/proc/self/fd", "tmpfs", uintptr(6), ""}, nil, nil),
+				call("chdir", stub.ExpectArgs{"/proc/self/fd"}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"sysroot", os.FileMode(0755)}, nil, nil),
 				call("mount", stub.ExpectArgs{"sysroot", "sysroot", "", uintptr(0xd000), ""}, nil, nil),
 				call("mkdir", stub.ExpectArgs{"host", os.FileMode(0755)}, nil, nil),
@@ -2697,6 +2697,7 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x5)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x6)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x7)}, nil, nil),
+				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x8)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x9)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xa)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0xb)}, nil, nil),
@@ -2728,9 +2729,8 @@ func TestInitEntrypoint(t *testing.T) {
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x26)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x27)}, nil, nil),
 				call("capBoundingSetDrop", stub.ExpectArgs{uintptr(0x28)}, nil, nil),
-				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0x200100, 0x200100, 0x200100}, {0, 0, 0}}}, nil, nil),
 				call("capAmbientRaise", stub.ExpectArgs{uintptr(0x15)}, nil, nil),
-				call("capAmbientRaise", stub.ExpectArgs{uintptr(0x8)}, nil, nil),
+				call("capset", stub.ExpectArgs{&capHeader{_LINUX_CAPABILITY_VERSION_3, 0}, &[2]capData{{0, 0x200000, 0x200000}, {0, 0, 0}}}, nil, nil),
 				call("verbosef", stub.ExpectArgs{"resolving presets %#x", []any{std.FilterPreset(0xf)}}, nil, nil),
 				call("seccompLoad", stub.ExpectArgs{seccomp.Preset(0xf, 0), seccomp.ExportFlag(0)}, nil, nil),
 				call("verbosef", stub.ExpectArgs{"%d filter rules loaded", []any{73}}, nil, nil),

container/initoverlay.go

@@ -4,9 +4,9 @@ import (
 	"encoding/gob"
 	"fmt"
 	"slices"
+	"strings"
 
 	"hakurei.app/check"
-	"hakurei.app/ext"
 	"hakurei.app/fhs"
 )
 
@@ -150,7 +150,7 @@ func (o *MountOverlayOp) early(_ *setupState, k syscallDispatcher) error {
 			if v, err := k.evalSymlinks(o.Upper.String()); err != nil {
 				return err
 			} else {
-				o.upper = toHost(v)
+				o.upper = check.EscapeOverlayDataSegment(toHost(v))
 			}
 		}
 
@@ -158,7 +158,7 @@ func (o *MountOverlayOp) early(_ *setupState, k syscallDispatcher) error {
 			if v, err := k.evalSymlinks(o.Work.String()); err != nil {
 				return err
 			} else {
-				o.work = toHost(v)
+				o.work = check.EscapeOverlayDataSegment(toHost(v))
 			}
 		}
 	}
@@ -168,39 +168,12 @@ func (o *MountOverlayOp) early(_ *setupState, k syscallDispatcher) error {
 		if v, err := k.evalSymlinks(a.String()); err != nil {
 			return err
 		} else {
-			o.lower[i] = toHost(v)
+			o.lower[i] = check.EscapeOverlayDataSegment(toHost(v))
 		}
 	}
 	return nil
 }
 
-// mountOverlay sets up an overlay mount via [ext.FS].
-func mountOverlay(target string, options [][2]string) error {
-	fs, err := ext.OpenFS(SourceOverlay, 0)
-	if err != nil {
-		return err
-	}
-	if err = fs.SetString("source", SourceOverlay); err != nil {
-		_ = fs.Close()
-		return err
-	}
-	for _, option := range options {
-		if err = fs.SetString(option[0], option[1]); err != nil {
-			_ = fs.Close()
-			return err
-		}
-	}
-	if err = fs.SetFlag(OptionOverlayUserxattr); err != nil {
-		_ = fs.Close()
-		return err
-	}
-	if err = fs.Mount(target, 0); err != nil {
-		_ = fs.Close()
-		return err
-	}
-	return fs.Close()
-}
-
 func (o *MountOverlayOp) apply(state *setupState, k syscallDispatcher) error {
 	target := o.Target.String()
 	if !o.noPrefix {
@@ -221,7 +194,7 @@ func (o *MountOverlayOp) apply(state *setupState, k syscallDispatcher) error {
 		}
 	}
 
-	options := make([][2]string, 0, 2+len(o.lower))
+	options := make([]string, 0, 4)
 
 	if o.upper == zeroString && o.work == zeroString { // readonly
 		if len(o.Lower) < 2 {
@@ -232,16 +205,15 @@ func (o *MountOverlayOp) apply(state *setupState, k syscallDispatcher) error {
 		if len(o.Lower) == 0 {
 			return &OverlayArgumentError{OverlayEmptyLower, zeroString}
 		}
-		options = append(options, [][2]string{
-			{OptionOverlayUpperdir, o.upper},
-			{OptionOverlayWorkdir, o.work},
-		}...)
-	}
-	for _, lower := range o.lower {
-		options = append(options, [2]string{OptionOverlayLowerdir + "+", lower})
+		options = append(options,
+			OptionOverlayUpperdir+"="+o.upper,
+			OptionOverlayWorkdir+"="+o.work)
 	}
+	options = append(options,
+		OptionOverlayLowerdir+"="+strings.Join(o.lower, check.SpecialOverlayPath),
+		OptionOverlayUserxattr)
 
-	return k.mountOverlay(target, options)
+	return k.mount(SourceOverlay, target, FstypeOverlay, 0, strings.Join(options, check.SpecialOverlayOption))
 }
 
 func (o *MountOverlayOp) late(*setupState, syscallDispatcher) error { return nil }

container/initoverlay_test.go

@@ -97,12 +97,13 @@ func TestMountOverlayOp(t *testing.T) {
 			call("mkdirAll", stub.ExpectArgs{"/sysroot", os.FileMode(0705)}, nil, nil),
 			call("mkdirTemp", stub.ExpectArgs{"/", "overlay.upper.*"}, "overlay.upper.32768", nil),
 			call("mkdirTemp", stub.ExpectArgs{"/", "overlay.work.*"}, "overlay.work.32768", nil),
-			call("mountOverlay", stub.ExpectArgs{"/sysroot", [][2]string{
-				{"upperdir", "overlay.upper.32768"},
-				{"workdir", "overlay.work.32768"},
-				{"lowerdir+", `/host/var/lib/planterette/base/debian:f92c9052`},
-				{"lowerdir+", `/host/var/lib/planterette/app/org.chromium.Chromium@debian:f92c9052`},
-			}}, nil, nil),
+			call("mount", stub.ExpectArgs{"overlay", "/sysroot", "overlay", uintptr(0), "" +
+				"upperdir=overlay.upper.32768," +
+				"workdir=overlay.work.32768," +
+				"lowerdir=" +
+				`/host/var/lib/planterette/base/debian\:f92c9052:` +
+				`/host/var/lib/planterette/app/org.chromium.Chromium@debian\:f92c9052,` +
+				"userxattr"}, nil, nil),
 		}, nil},
 
 		{"short lower ro", &Params{ParentPerm: 0755}, &MountOverlayOp{
@@ -128,10 +129,11 @@ func TestMountOverlayOp(t *testing.T) {
 			call("evalSymlinks", stub.ExpectArgs{"/mnt-root/nix/.ro-store0"}, "/mnt-root/nix/.ro-store0", nil),
 		}, nil, []stub.Call{
 			call("mkdirAll", stub.ExpectArgs{"/nix/store", os.FileMode(0755)}, nil, nil),
-			call("mountOverlay", stub.ExpectArgs{"/nix/store", [][2]string{
-				{"lowerdir+", "/host/mnt-root/nix/.ro-store"},
-				{"lowerdir+", "/host/mnt-root/nix/.ro-store0"},
-			}}, nil, nil),
+			call("mount", stub.ExpectArgs{"overlay", "/nix/store", "overlay", uintptr(0), "" +
+				"lowerdir=" +
+				"/host/mnt-root/nix/.ro-store:" +
+				"/host/mnt-root/nix/.ro-store0," +
+				"userxattr"}, nil, nil),
 		}, nil},
 
 		{"success ro", &Params{ParentPerm: 0755}, &MountOverlayOp{
@@ -145,10 +147,11 @@ func TestMountOverlayOp(t *testing.T) {
 			call("evalSymlinks", stub.ExpectArgs{"/mnt-root/nix/.ro-store0"}, "/mnt-root/nix/.ro-store0", nil),
 		}, nil, []stub.Call{
 			call("mkdirAll", stub.ExpectArgs{"/sysroot/nix/store", os.FileMode(0755)}, nil, nil),
-			call("mountOverlay", stub.ExpectArgs{"/sysroot/nix/store", [][2]string{
-				{"lowerdir+", "/host/mnt-root/nix/.ro-store"},
-				{"lowerdir+", "/host/mnt-root/nix/.ro-store0"},
-			}}, nil, nil),
+			call("mount", stub.ExpectArgs{"overlay", "/sysroot/nix/store", "overlay", uintptr(0), "" +
+				"lowerdir=" +
+				"/host/mnt-root/nix/.ro-store:" +
+				"/host/mnt-root/nix/.ro-store0," +
+				"userxattr"}, nil, nil),
 		}, nil},
 
 		{"nil lower", &Params{ParentPerm: 0700}, &MountOverlayOp{
@@ -216,11 +219,7 @@ func TestMountOverlayOp(t *testing.T) {
 			call("evalSymlinks", stub.ExpectArgs{"/mnt-root/nix/.ro-store"}, "/mnt-root/nix/ro-store", nil),
 		}, nil, []stub.Call{
 			call("mkdirAll", stub.ExpectArgs{"/sysroot/nix/store", os.FileMode(0700)}, nil, nil),
-			call("mountOverlay", stub.ExpectArgs{"/sysroot/nix/store", [][2]string{
-				{"upperdir", "/host/mnt-root/nix/.rw-store/.upper"},
-				{"workdir", "/host/mnt-root/nix/.rw-store/.work"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store"},
-			}}, nil, stub.UniqueError(0)),
+			call("mount", stub.ExpectArgs{"overlay", "/sysroot/nix/store", "overlay", uintptr(0), "upperdir=/host/mnt-root/nix/.rw-store/.upper,workdir=/host/mnt-root/nix/.rw-store/.work,lowerdir=/host/mnt-root/nix/ro-store,userxattr"}, nil, stub.UniqueError(0)),
 		}, stub.UniqueError(0)},
 
 		{"success single layer", &Params{ParentPerm: 0700}, &MountOverlayOp{
@@ -234,11 +233,11 @@ func TestMountOverlayOp(t *testing.T) {
 			call("evalSymlinks", stub.ExpectArgs{"/mnt-root/nix/.ro-store"}, "/mnt-root/nix/ro-store", nil),
 		}, nil, []stub.Call{
 			call("mkdirAll", stub.ExpectArgs{"/sysroot/nix/store", os.FileMode(0700)}, nil, nil),
-			call("mountOverlay", stub.ExpectArgs{"/sysroot/nix/store", [][2]string{
-				{"upperdir", "/host/mnt-root/nix/.rw-store/.upper"},
-				{"workdir", "/host/mnt-root/nix/.rw-store/.work"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store"},
-			}}, nil, nil),
+			call("mount", stub.ExpectArgs{"overlay", "/sysroot/nix/store", "overlay", uintptr(0), "" +
+				"upperdir=/host/mnt-root/nix/.rw-store/.upper," +
+				"workdir=/host/mnt-root/nix/.rw-store/.work," +
+				"lowerdir=/host/mnt-root/nix/ro-store," +
+				"userxattr"}, nil, nil),
 		}, nil},
 
 		{"success", &Params{ParentPerm: 0700}, &MountOverlayOp{
@@ -262,15 +261,16 @@ func TestMountOverlayOp(t *testing.T) {
 			call("evalSymlinks", stub.ExpectArgs{"/mnt-root/nix/.ro-store3"}, "/mnt-root/nix/ro-store3", nil),
 		}, nil, []stub.Call{
 			call("mkdirAll", stub.ExpectArgs{"/sysroot/nix/store", os.FileMode(0700)}, nil, nil),
-			call("mountOverlay", stub.ExpectArgs{"/sysroot/nix/store", [][2]string{
-				{"upperdir", "/host/mnt-root/nix/.rw-store/.upper"},
-				{"workdir", "/host/mnt-root/nix/.rw-store/.work"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store0"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store1"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store2"},
-				{"lowerdir+", "/host/mnt-root/nix/ro-store3"},
-			}}, nil, nil),
+			call("mount", stub.ExpectArgs{"overlay", "/sysroot/nix/store", "overlay", uintptr(0), "" +
+				"upperdir=/host/mnt-root/nix/.rw-store/.upper," +
+				"workdir=/host/mnt-root/nix/.rw-store/.work," +
+				"lowerdir=" +
+				"/host/mnt-root/nix/ro-store:" +
+				"/host/mnt-root/nix/ro-store0:" +
+				"/host/mnt-root/nix/ro-store1:" +
+				"/host/mnt-root/nix/ro-store2:" +
+				"/host/mnt-root/nix/ro-store3," +
+				"userxattr"}, nil, nil),
 		}, nil},
 	})
 

container/mount.go

@@ -40,9 +40,6 @@ const (
 	// SourceMqueue is used when mounting mqueue.
 	// Note that any source value is allowed when fstype is [FstypeMqueue].
 	SourceMqueue = "mqueue"
-	// SourceBinfmtMisc is used when mounting binfmt_misc.
-	// Note that any source value is allowed when fstype is [SourceBinfmtMisc].
-	SourceBinfmtMisc = "binfmt_misc"
 	// SourceOverlay is used when mounting overlay.
 	// Note that any source value is allowed when fstype is [FstypeOverlay].
 	SourceOverlay = "overlay"
@@ -73,9 +70,6 @@ const (
 	// FstypeMqueue represents the mqueue pseudo-filesystem.
 	// This filesystem type is usually mounted on /dev/mqueue.
 	FstypeMqueue = "mqueue"
-	// FstypeBinfmtMisc represents the binfmt_misc pseudo-filesystem.
-	// This filesystem type is usually mounted on /proc/sys/fs/binfmt_misc.
-	FstypeBinfmtMisc = "binfmt_misc"
 	// FstypeOverlay represents the overlay pseudo-filesystem.
 	// This filesystem type can be mounted anywhere in the container filesystem.
 	FstypeOverlay = "overlay"

container/path_test.go

@@ -10,6 +10,7 @@ import (
 	"testing"
 	"unsafe"
 
+	"hakurei.app/check"
 	"hakurei.app/vfs"
 )
 
@@ -49,6 +50,9 @@ func TestToHost(t *testing.T) {
 	}
 }
 
+// InternalToHostOvlEscape exports toHost passed to [check.EscapeOverlayDataSegment].
+func InternalToHostOvlEscape(s string) string { return check.EscapeOverlayDataSegment(toHost(s)) }
+
 func TestCreateFile(t *testing.T) {
 	t.Run("nonexistent", func(t *testing.T) {
 		t.Run("mkdir", func(t *testing.T) {

ext/ext_test.go

@@ -39,7 +39,7 @@ func TestSyscall(t *testing.T) {
 					t.Errorf("Unmarshal: %v, want %v", got, tc.want)
 				}
 			})
-			if _, ok := errors.AsType[ext.SyscallNameError](tc.err); ok {
+			if errors.As(tc.err, new(ext.SyscallNameError)) {
 				return
 			}
 

ext/fs.go

@@ -1,267 +0,0 @@
-package ext
-
-import (
-	"os"
-	"runtime"
-	"syscall"
-	"unsafe"
-)
-
-// include/uapi/linux/mount.h
-
-/*
- * move_mount() flags.
- */
-const (
-	MOVE_MOUNT_F_SYMLINKS   = 1 << iota /* Follow symlinks on from path */
-	MOVE_MOUNT_F_AUTOMOUNTS             /* Follow automounts on from path */
-	MOVE_MOUNT_F_EMPTY_PATH             /* Empty from path permitted */
-	_
-	MOVE_MOUNT_T_SYMLINKS   /* Follow symlinks on to path */
-	MOVE_MOUNT_T_AUTOMOUNTS /* Follow automounts on to path */
-	MOVE_MOUNT_T_EMPTY_PATH /* Empty to path permitted */
-	_
-	MOVE_MOUNT_SET_GROUP /* Set sharing group instead */
-	MOVE_MOUNT_BENEATH   /* Mount beneath top mount */
-)
-
-/*
- * fsopen() flags.
- */
-const (
-	FSOPEN_CLOEXEC = 1 << iota
-)
-
-/*
- * fspick() flags.
- */
-const (
-	FSPICK_CLOEXEC = 1 << iota
-	FSPICK_SYMLINK_NOFOLLOW
-	FSPICK_NO_AUTOMOUNT
-	FSPICK_EMPTY_PATH
-)
-
-/*
- * The type of fsconfig() call made.
- */
-const (
-	FSCONFIG_SET_FLAG        = iota /* Set parameter, supplying no value */
-	FSCONFIG_SET_STRING             /* Set parameter, supplying a string value */
-	FSCONFIG_SET_BINARY             /* Set parameter, supplying a binary blob value */
-	FSCONFIG_SET_PATH               /* Set parameter, supplying an object by path */
-	FSCONFIG_SET_PATH_EMPTY         /* Set parameter, supplying an object by (empty) path */
-	FSCONFIG_SET_FD                 /* Set parameter, supplying an object by fd */
-	FSCONFIG_CMD_CREATE             /* Create new or reuse existing superblock */
-	FSCONFIG_CMD_RECONFIGURE        /* Invoke superblock reconfiguration */
-	FSCONFIG_CMD_CREATE_EXCL        /* Create new superblock, fail if reusing existing superblock */
-)
-
-/*
- * fsmount() flags.
- */
-const (
-	FSMOUNT_CLOEXEC = 1 << iota
-)
-
-/*
- * Mount attributes.
- */
-const (
-	MOUNT_ATTR_RDONLY      = 0x00000001 /* Mount read-only */
-	MOUNT_ATTR_NOSUID      = 0x00000002 /* Ignore suid and sgid bits */
-	MOUNT_ATTR_NODEV       = 0x00000004 /* Disallow access to device special files */
-	MOUNT_ATTR_NOEXEC      = 0x00000008 /* Disallow program execution */
-	MOUNT_ATTR__ATIME      = 0x00000070 /* Setting on how atime should be updated */
-	MOUNT_ATTR_RELATIME    = 0x00000000 /* - Update atime relative to mtime/ctime. */
-	MOUNT_ATTR_NOATIME     = 0x00000010 /* - Do not update access times. */
-	MOUNT_ATTR_STRICTATIME = 0x00000020 /* - Always perform atime updates */
-	MOUNT_ATTR_NODIRATIME  = 0x00000080 /* Do not update directory access times */
-	MOUNT_ATTR_IDMAP       = 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */
-	MOUNT_ATTR_NOSYMFOLLOW = 0x00200000 /* Do not follow symlinks */
-)
-
-// FS provides low-level wrappers around the suite of file-descriptor-based
-// mount facilities in Linux.
-type FS struct {
-	fd uintptr
-	c  runtime.Cleanup
-}
-
-// newFS allocates a new [FS] for the specified fd.
-func newFS(fd uintptr) *FS {
-	fs := FS{fd: fd}
-	fs.c = runtime.AddCleanup(&fs, func(fd uintptr) {
-		_ = syscall.Close(int(fd))
-	}, fd)
-	return &fs
-}
-
-// Close closes the underlying filesystem context.
-func (fs *FS) Close() error {
-	if fs == nil {
-		return syscall.EINVAL
-	}
-	err := syscall.Close(int(fs.fd))
-	fs.c.Stop()
-	return err
-}
-
-// OpenFS creates a new filesystem context.
-func OpenFS(fsname string, flags int) (fs *FS, err error) {
-	var s *byte
-	s, err = syscall.BytePtrFromString(fsname)
-	if err != nil {
-		return
-	}
-	fd, _, errno := syscall.Syscall(
-		SYS_FSOPEN,
-		uintptr(unsafe.Pointer(s)),
-		uintptr(flags|FSOPEN_CLOEXEC),
-		0,
-	)
-	if errno != 0 {
-		err = os.NewSyscallError("fsopen", errno)
-	} else {
-		fs = newFS(fd)
-	}
-	return
-}
-
-// PickFS selects filesystem for reconfiguration.
-func PickFS(dirfd int, pathname string, flags int) (fs *FS, err error) {
-	var s *byte
-	s, err = syscall.BytePtrFromString(pathname)
-	if err != nil {
-		return
-	}
-	fd, _, errno := syscall.Syscall(
-		SYS_FSPICK,
-		uintptr(dirfd),
-		uintptr(unsafe.Pointer(s)),
-		uintptr(flags|FSPICK_CLOEXEC),
-	)
-	if errno != 0 {
-		err = os.NewSyscallError("fspick", errno)
-	} else {
-		fs = newFS(fd)
-	}
-	return
-}
-
-// config configures new or existing filesystem context.
-func (fs *FS) config(cmd uint, key *byte, value unsafe.Pointer, aux int) (err error) {
-	_, _, errno := syscall.Syscall6(
-		SYS_FSCONFIG,
-		fs.fd,
-		uintptr(cmd),
-		uintptr(unsafe.Pointer(key)),
-		uintptr(value),
-		uintptr(aux),
-		0,
-	)
-	if errno != 0 {
-		err = os.NewSyscallError("fsconfig", errno)
-	}
-	return
-}
-
-// SetFlag sets the flag parameter named by key. ([FSCONFIG_SET_FLAG])
-func (fs *FS) SetFlag(key string) (err error) {
-	var s *byte
-	s, err = syscall.BytePtrFromString(key)
-	if err != nil {
-		return
-	}
-
-	return fs.config(FSCONFIG_SET_FLAG, s, nil, 0)
-}
-
-// SetString sets the string parameter named by key to the value specified by
-// value. ([FSCONFIG_SET_STRING])
-func (fs *FS) SetString(key, value string) (err error) {
-	var s0 *byte
-	s0, err = syscall.BytePtrFromString(key)
-	if err != nil {
-		return
-	}
-
-	var s1 *byte
-	s1, err = syscall.BytePtrFromString(value)
-	if err != nil {
-		return
-	}
-
-	return fs.config(FSCONFIG_SET_STRING, s0, unsafe.Pointer(s1), 0)
-}
-
-// mount instantiates mount object from filesystem context.
-func (fs *FS) mount(flags, attrFlags int) (fsfd int, err error) {
-	r, _, errno := syscall.Syscall(
-		SYS_FSMOUNT,
-		fs.fd,
-		uintptr(flags|FSMOUNT_CLOEXEC),
-		uintptr(attrFlags),
-	)
-	fsfd = int(r)
-	if errno != 0 {
-		err = os.NewSyscallError("fsmount", errno)
-	}
-	return
-}
-
-// MoveMount moves or attaches mount object to filesystem.
-func MoveMount(
-	fromDirfd int,
-	fromPathname string,
-	toDirfd int,
-	toPathname string,
-	flags int,
-) (err error) {
-	var s0 *byte
-	s0, err = syscall.BytePtrFromString(fromPathname)
-	if err != nil {
-		return
-	}
-
-	var s1 *byte
-	s1, err = syscall.BytePtrFromString(toPathname)
-	if err != nil {
-		return
-	}
-
-	_, _, errno := syscall.Syscall6(
-		SYS_MOVE_MOUNT,
-		uintptr(fromDirfd),
-		uintptr(unsafe.Pointer(s0)),
-		uintptr(toDirfd),
-		uintptr(unsafe.Pointer(s1)),
-		uintptr(flags),
-		0,
-	)
-	if errno != 0 {
-		err = os.NewSyscallError("move_mount", errno)
-	}
-	return
-}
-
-// Mount attaches the underlying filesystem context to the specified pathname.
-func (fs *FS) Mount(pathname string, attrFlags int) error {
-	if err := fs.config(FSCONFIG_CMD_CREATE_EXCL, nil, nil, 0); err != nil {
-		return err
-	}
-	fd, err := fs.mount(0, attrFlags)
-	if err != nil {
-		return err
-	}
-	err = MoveMount(
-		fd, "",
-		-1, pathname,
-		MOVE_MOUNT_F_EMPTY_PATH,
-	)
-	closeErr := syscall.Close(fd)
-	if err == nil {
-		err = closeErr
-	}
-	return err
-}

fhs/abs.go

@@ -42,8 +42,6 @@ var (
 	AbsDevShm = unsafeAbs(DevShm)
 	// AbsProc is [Proc] as [check.Absolute].
 	AbsProc = unsafeAbs(Proc)
-	// AbsProcSys is [ProcSys] as [check.Absolute].
-	AbsProcSys = unsafeAbs(ProcSys)
 	// AbsProcSelfExe is [ProcSelfExe] as [check.Absolute].
 	AbsProcSelfExe = unsafeAbs(ProcSelfExe)
 	// AbsSys is [Sys] as [check.Absolute].

flake.lock

@@ -7,32 +7,32 @@
         ]
       },
       "locked": {
-        "lastModified": 1780361225,
-        "narHash": "sha256-wnV9ttf4fPWNonBIQmvlrSlNpQYgx5HgWWd007mwIFA=",
+        "lastModified": 1772985280,
+        "narHash": "sha256-FdrNykOoY9VStevU4zjSUdvsL9SzJTcXt4omdEDZDLk=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "e28654b71096e08c019d4861ca26acb646f583d8",
+        "rev": "8f736f007139d7f70752657dff6a401a585d6cbc",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "ref": "release-26.05",
+        "ref": "release-25.11",
         "repo": "home-manager",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1780453794,
-        "narHash": "sha256-bXMRa9VTsHSPXL4Cw8R6JJLQeY3Y/IP4+YJCYVmQ7FY=",
+        "lastModified": 1772822230,
+        "narHash": "sha256-yf3iYLGbGVlIthlQIk5/4/EQDZNNEmuqKZkQssMljuw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6b316287bae2ee04c9b93c8c858d930fd07d7338",
+        "rev": "71caefce12ba78d84fe618cf61644dce01cf3a96",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-26.05",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -2,10 +2,10 @@
   description = "hakurei container tool and nixos module";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
 
     home-manager = {
-      url = "github:nix-community/home-manager/release-26.05";
+      url = "github:nix-community/home-manager/release-25.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
@@ -37,7 +37,7 @@
           inherit (pkgs)
             runCommandLocal
             callPackage
-            nixfmt
+            nixfmt-rfc-style
             deadnix
             statix
             ;
@@ -57,7 +57,7 @@
 
           sharefs = callPackage ./cmd/sharefs/test { inherit system self; };
 
-          formatting = runCommandLocal "check-formatting" { nativeBuildInputs = [ nixfmt ]; } ''
+          formatting = runCommandLocal "check-formatting" { nativeBuildInputs = [ nixfmt-rfc-style ]; } ''
             cd ${./.}
 
             echo "running nixfmt..."
@@ -139,6 +139,7 @@
                 GOCACHE="$(mktemp -d)" \
                 PATH="${pkgs.pkgsStatic.musl.bin}/bin:$PATH" \
                 DESTDIR="$out" \
+                HAKUREI_VERSION="v${hakurei.version}" \
                   ./all.sh
               '';
         }

hst/container.go

@@ -2,7 +2,6 @@ package hst
 
 import (
 	"encoding/json"
-	"fmt"
 	"strings"
 	"syscall"
 	"time"
@@ -69,8 +68,6 @@ const (
 	// FDevice mount /dev/ from the init mount namespace as is in the container
 	// mount namespace.
 	FDevice
-	// FCoverRun covers /run/ in the container mount namespace early.
-	FCoverRun
 
 	// FShareRuntime shares XDG_RUNTIME_DIR between containers under the same identity.
 	FShareRuntime
@@ -103,8 +100,6 @@ func (flags Flags) String() string {
 		return "mapuid"
 	case FDevice:
 		return "device"
-	case FCoverRun:
-		return "cover_run"
 	case FShareRuntime:
 		return "runtime"
 	case FShareTmpdir:
@@ -166,10 +161,6 @@ type ContainerConfig struct {
 	Flags Flags `json:"-"`
 }
 
-func (c *ContainerConfig) GoString() string {
-	return fmt.Sprintf("&%#v", *c)
-}
-
 // ContainerConfigF is [ContainerConfig] stripped of its methods.
 //
 // The [ContainerConfig.Flags] field does not survive a [json] round trip.
@@ -200,8 +191,6 @@ type containerConfigJSON = struct {
 
 	// Corresponds to [FDevice].
 	Device bool `json:"device,omitempty"`
-	// Corresponds to [FCoverRun].
-	CoverRun bool `json:"cover_run,omitempty"`
 
 	// Corresponds to [FShareRuntime].
 	ShareRuntime bool `json:"share_runtime,omitempty"`
@@ -225,7 +214,6 @@ func (c *ContainerConfig) MarshalJSON() ([]byte, error) {
 		Multiarch:     c.Flags&FMultiarch != 0,
 		MapRealUID:    c.Flags&FMapRealUID != 0,
 		Device:        c.Flags&FDevice != 0,
-		CoverRun:      c.Flags&FCoverRun != 0,
 		ShareRuntime:  c.Flags&FShareRuntime != 0,
 		ShareTmpdir:   c.Flags&FShareTmpdir != 0,
 	})
@@ -269,9 +257,6 @@ func (c *ContainerConfig) UnmarshalJSON(data []byte) error {
 	if v.Device {
 		c.Flags |= FDevice
 	}
-	if v.CoverRun {
-		c.Flags |= FCoverRun
-	}
 	if v.ShareRuntime {
 		c.Flags |= FShareRuntime
 	}

hst/container_test.go

@@ -21,8 +21,8 @@ func TestFlagsString(t *testing.T) {
 	}{
 		{"none", 0, "none"},
 		{"none high", hst.FAll + 1, "none"},
-		{"all", hst.FAll, "multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, cover_run, runtime, tmpdir"},
-		{"all high", math.MaxUint, "multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, cover_run, runtime, tmpdir"},
+		{"all", hst.FAll, "multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, runtime, tmpdir"},
+		{"all high", math.MaxUint, "multiarch, compat, devel, userns, net, abstract, tty, mapuid, device, runtime, tmpdir"},
 	}
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
@@ -53,7 +53,7 @@ func TestContainerConfig(t *testing.T) {
 		{"hostnet hostabstract mapuid", &hst.ContainerConfig{Flags: hst.FHostNet | hst.FHostAbstract | hst.FMapRealUID},
 			`{"env":null,"filesystem":null,"shell":null,"home":null,"args":null,"host_net":true,"host_abstract":true,"map_real_uid":true}`},
 		{"all", &hst.ContainerConfig{Flags: hst.FAll},
-			`{"env":null,"filesystem":null,"shell":null,"home":null,"args":null,"seccomp_compat":true,"devel":true,"userns":true,"host_net":true,"host_abstract":true,"tty":true,"multiarch":true,"map_real_uid":true,"device":true,"cover_run":true,"share_runtime":true,"share_tmpdir":true}`},
+			`{"env":null,"filesystem":null,"shell":null,"home":null,"args":null,"seccomp_compat":true,"devel":true,"userns":true,"host_net":true,"host_abstract":true,"tty":true,"multiarch":true,"map_real_uid":true,"device":true,"share_runtime":true,"share_tmpdir":true}`},
 	}
 
 	for _, tc := range testCases {

hst/dbus.go

@@ -1,7 +1,6 @@
 package hst
 
 import (
-	"fmt"
 	"strconv"
 	"strings"
 )
@@ -62,10 +61,6 @@ type BusConfig struct {
 	Filter bool `json:"filter"`
 }
 
-func (c *BusConfig) GoString() string {
-	return fmt.Sprintf("&%#v", *c)
-}
-
 // Interfaces iterates over all interface strings specified in [BusConfig].
 func (c *BusConfig) Interfaces(yield func(string) bool) {
 	if c == nil {

hst/fs.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"os"
 	"reflect"
-	"strings"
 
 	"hakurei.app/check"
 )
@@ -37,8 +36,6 @@ type Ops interface {
 	Bind(source, target *check.Absolute, flags int) Ops
 	// Overlay appends an op that mounts the overlay pseudo filesystem.
 	Overlay(target, state, work *check.Absolute, layers ...*check.Absolute) Ops
-	// OverlayEphemeral appends a MountOverlayOp with an ephemeral upperdir and workdir.
-	OverlayEphemeral(target *check.Absolute, layers ...*check.Absolute) Ops
 	// OverlayReadonly appends an op that mounts the overlay pseudo filesystem readonly.
 	OverlayReadonly(target *check.Absolute, layers ...*check.Absolute) Ops
 
@@ -81,17 +78,17 @@ type FSImplError struct{ Value FilesystemConfig }
 
 func (f FSImplError) Error() string {
 	implType := reflect.TypeOf(f.Value)
-	var buf strings.Builder
-	for implType != nil && implType.Kind() == reflect.Pointer {
-		buf.WriteByte('*')
+	var name string
+	for implType != nil && implType.Kind() == reflect.Ptr {
+		name += "*"
 		implType = implType.Elem()
 	}
 	if implType != nil {
-		buf.WriteString(implType.Name())
+		name += implType.Name()
 	} else {
-		buf.WriteString("nil")
+		name += "nil"
 	}
-	return "implementation " + buf.String() + " not supported"
+	return fmt.Sprintf("implementation %s not supported", name)
 }
 
 // FilesystemConfigJSON is the [json] adapter for [FilesystemConfig].

hst/fs_test.go

@@ -3,7 +3,6 @@ package hst_test
 import (
 	"encoding/json"
 	"errors"
-	"fmt"
 	"os"
 	"reflect"
 	"strings"
@@ -104,7 +103,7 @@ func TestFilesystemConfigJSON(t *testing.T) {
 			t.Run("marshal", func(t *testing.T) {
 				t.Parallel()
 				wantErr := tc.wantErr
-				if _, ok := errors.AsType[hst.FSTypeError](wantErr); ok {
+				if errors.As(wantErr, new(hst.FSTypeError)) {
 					// for unsupported implementation tc
 					wantErr = hst.FSImplError{Value: stubFS{"cat"}}
 				}
@@ -140,7 +139,7 @@ func TestFilesystemConfigJSON(t *testing.T) {
 			t.Run("unmarshal", func(t *testing.T) {
 				t.Parallel()
 				if tc.data == "\x00" && tc.sData == "\x00" {
-					if _, ok := errors.AsType[hst.FSImplError](tc.wantErr); ok {
+					if errors.As(tc.wantErr, new(hst.FSImplError)) {
 						// this error is only returned on marshal
 						return
 					}
@@ -284,11 +283,11 @@ func checkFs(t *testing.T, testCases []fsTestCase) {
 				if !reflect.DeepEqual(ops, &tc.ops) {
 					gotString := new(strings.Builder)
 					for _, op := range *ops {
-						gotString.WriteString("\n" + fmt.Sprintf("%#v", op))
+						gotString.WriteString("\n" + op.String())
 					}
 					wantString := new(strings.Builder)
 					for _, op := range tc.ops {
-						wantString.WriteString("\n" + fmt.Sprintf("%#v", op))
+						wantString.WriteString("\n" + op.String())
 					}
 					t.Errorf("Apply: %s, want %s", gotString, wantString)
 				}
@@ -340,10 +339,6 @@ func (p opsAdapter) Overlay(target, state, work *check.Absolute, layers ...*chec
 	return opsAdapter{p.Ops.Overlay(target, state, work, layers...)}
 }
 
-func (p opsAdapter) OverlayEphemeral(target *check.Absolute, layers ...*check.Absolute) hst.Ops {
-	return opsAdapter{p.Ops.OverlayEphemeral(target, layers...)}
-}
-
 func (p opsAdapter) OverlayReadonly(target *check.Absolute, layers ...*check.Absolute) hst.Ops {
 	return opsAdapter{p.Ops.OverlayReadonly(target, layers...)}
 }

hst/fsephemeral.go

@@ -43,13 +43,18 @@ func (e *FSEphemeral) Apply(z *ApplyState) {
 		return
 	}
 
+	size := e.Size
+	if size < 0 {
+		size = 0
+	}
+
 	perm := e.Perm
 	if perm == 0 {
 		perm = fsEphemeralDefaultPerm
 	}
 
 	if e.Write {
-		z.Tmpfs(e.Target, max(e.Size, 0), perm)
+		z.Tmpfs(e.Target, size, perm)
 	} else {
 		z.Readonly(e.Target, perm)
 	}

hst/fsoverlay.go

@@ -2,7 +2,6 @@ package hst
 
 import (
 	"encoding/gob"
-	"slices"
 	"strings"
 
 	"hakurei.app/check"
@@ -41,7 +40,7 @@ func (o *FSOverlay) Valid() bool {
 	}
 
 	if o.Upper != nil { // rw
-		return o.Work != nil || len(o.Lower) > 0
+		return o.Work != nil && len(o.Lower) > 0
 	} else { // ro
 		return len(o.Lower) >= 2
 	}
@@ -59,11 +58,8 @@ func (o *FSOverlay) Host() []*check.Absolute {
 		return nil
 	}
 	p := make([]*check.Absolute, 0, 2+len(o.Lower))
-	if o.Upper != nil {
-		p = append(p, o.Upper)
-		if o.Work != nil {
-			p = append(p, o.Work)
-		}
+	if o.Upper != nil && o.Work != nil {
+		p = append(p, o.Upper, o.Work)
 	}
 	p = append(p, o.Lower...)
 	return p
@@ -74,18 +70,11 @@ func (o *FSOverlay) Apply(z *ApplyState) {
 		return
 	}
 
-	if o.Upper != nil {
+	if o.Upper != nil && o.Work != nil {
+		z.Overlay(o.Target, o.Upper, o.Work, o.Lower...)
 		if o.Target.Is(fhs.AbsRoot) {
 			z.NoRemountRoot = true
 		}
-		if o.Work != nil {
-			z.Overlay(o.Target, o.Upper, o.Work, o.Lower...)
-		} else {
-			z.OverlayEphemeral(o.Target, slices.Concat(
-				o.Lower,
-				[]*check.Absolute{o.Upper})...,
-			)
-		}
 	} else {
 		z.OverlayReadonly(o.Target, o.Lower...)
 	}
@@ -101,19 +90,12 @@ func (o *FSOverlay) String() string {
 		lower[i] = check.EscapeOverlayDataSegment(a.String())
 	}
 
-	if o.Upper != nil {
-		if o.Work != nil {
-			return "w*" + strings.Join(append([]string{
-				check.EscapeOverlayDataSegment(o.Target.String()),
-				check.EscapeOverlayDataSegment(o.Upper.String()),
-				check.EscapeOverlayDataSegment(o.Work.String())},
-				lower...), check.SpecialOverlayPath)
-		}
-		return "e*" + strings.Join(append([]string{
+	if o.Upper != nil && o.Work != nil {
+		return "w*" + strings.Join(append([]string{
 			check.EscapeOverlayDataSegment(o.Target.String()),
-			check.EscapeOverlayDataSegment(o.Upper.String())},
+			check.EscapeOverlayDataSegment(o.Upper.String()),
+			check.EscapeOverlayDataSegment(o.Work.String())},
 			lower...), check.SpecialOverlayPath)
-
 	} else {
 		return "*" + strings.Join(append([]string{
 			check.EscapeOverlayDataSegment(o.Target.String())},

hst/fsoverlay_test.go

@@ -5,7 +5,6 @@ import (
 
 	"hakurei.app/check"
 	"hakurei.app/container"
-	"hakurei.app/fhs"
 	"hakurei.app/hst"
 )
 
@@ -15,7 +14,7 @@ func TestFSOverlay(t *testing.T) {
 	checkFs(t, []fsTestCase{
 		{"nil", (*hst.FSOverlay)(nil), false, nil, nil, nil, "<invalid>"},
 		{"nil lower", &hst.FSOverlay{Target: m("/etc"), Lower: []*check.Absolute{nil}}, false, nil, nil, nil, "<invalid>"},
-		{"zero lower", &hst.FSOverlay{Target: m("/etc"), Work: m("/")}, false, nil, nil, nil, "<invalid>"},
+		{"zero lower", &hst.FSOverlay{Target: m("/etc"), Upper: m("/"), Work: m("/")}, false, nil, nil, nil, "<invalid>"},
 		{"zero lower ro", &hst.FSOverlay{Target: m("/etc")}, false, nil, nil, nil, "<invalid>"},
 		{"short lower", &hst.FSOverlay{Target: m("/etc"), Lower: ms("/etc")}, false, nil, nil, nil, "<invalid>"},
 
@@ -63,16 +62,5 @@ func TestFSOverlay(t *testing.T) {
 			Work:   m("/tmp/work"),
 		}}, m("/"), ms("/tmp/upper", "/tmp/work", "/tmp/.src0", "/tmp/.src1"),
 			"w*/:/tmp/upper:/tmp/work:/tmp/.src0:/tmp/.src1"},
-
-		{"ephemeral", &hst.FSOverlay{
-			Target: m("/"),
-			Lower:  ms("/tmp/.src0", "/tmp/.src1"),
-			Upper:  m("/tmp/upper"),
-		}, true, container.Ops{&container.MountOverlayOp{
-			Target: m("/"),
-			Lower:  ms("/tmp/.src0", "/tmp/.src1", "/tmp/upper"),
-			Upper:  fhs.AbsRoot,
-		}}, m("/"), ms("/tmp/upper", "/tmp/.src0", "/tmp/.src1"),
-			"e*/:/tmp/upper:/tmp/.src0:/tmp/.src1"},
 	})
 }

hst/hst_test.go

@@ -245,7 +245,6 @@ func TestTemplate(t *testing.T) {
 		"multiarch": true,
 		"map_real_uid": true,
 		"device": true,
-		"cover_run": true,
 		"share_runtime": true,
 		"share_tmpdir": true
 	}

internal/dbus/address.go

@@ -80,7 +80,7 @@ func unescapeValue(v []byte) (val []byte, errno ParseError) {
 			continue
 		}
 
-		if found := bytes.Contains([]byte("-_/.\\*"), []byte{b}); found { // - // _/.\*
+		if ib := bytes.IndexByte([]byte("-_/.\\*"), b); ib != -1 { // - // _/.\*
 			goto opt
 		} else if b >= '0' && b <= '9' { // 0-9
 			goto opt
@@ -101,7 +101,7 @@ func unescapeValue(v []byte) (val []byte, errno ParseError) {
 			break
 		}
 		if c, err := hex.Decode(val[i:i+1], v[iu+1:iu+3]); err != nil {
-			if _, ok := errors.AsType[hex.InvalidByteError](err); ok {
+			if errors.As(err, new(hex.InvalidByteError)) {
 				errno = ErrBadValHexByte
 				break
 			}

internal/kobject/event.go

@@ -2,7 +2,6 @@ package kobject
 
 import (
 	"errors"
-	"maps"
 	"strconv"
 	"strings"
 	"unsafe"
@@ -29,22 +28,6 @@ type Event struct {
 	Subsystem string `json:"subsystem"`
 }
 
-// Clone returns a copy of e.
-func (e *Event) Clone() Event {
-	v := *e
-	v.Env = maps.Clone(e.Env)
-	return v
-}
-
-// makeColdboot allocates a new [Object] from e in [StateColdboot].
-func (e *Event) makeColdboot() *Object {
-	return &Object{
-		State:     StateColdboot,
-		DevPath:   e.DevPath,
-		Subsystem: e.Subsystem,
-	}
-}
-
 // Populate populates e with the contents of a [uevent.Message].
 //
 // The ACTION and DEVPATH environment variables are ignored and assumed to be

internal/kobject/kobject.go

@@ -1,491 +0,0 @@
-// Package kobject interprets uevent messages from a NETLINK_KOBJECT_UEVENT socket.
-package kobject
-
-import (
-	"context"
-	"fmt"
-	"maps"
-	"slices"
-	"strconv"
-	"sync"
-
-	"hakurei.app/internal/report"
-	"hakurei.app/internal/uevent"
-)
-
-const (
-	// StateColdboot denotes an [Object] populated by a coldboot event. It is
-	// eligible for all event actions.
-	StateColdboot = iota
-	// StateNew denotes an [Object] previously populated by a [uevent.KOBJ_ADD]
-	// event, but has not yet been targeted by a [uevent.KOBJ_BIND] event, or
-	// has been targeted by a [uevent.KOBJ_UNBIND] event.
-	StateNew
-	// StateBound denotes an [Object] that has been targeted by a
-	// [uevent.KOBJ_BIND] and has not been targeted by a [uevent.KOBJ_UNBIND]
-	// after that.
-	StateBound
-)
-
-// Object represents a kernel object.
-type Object struct {
-	// Origin of the object.
-	State int `json:"state,omitempty"`
-	// Set by [uevent.KOBJ_OFFLINE] and [uevent.KOBJ_ONLINE].
-	Offline bool `json:"offline,omitempty"`
-
-	// alloc_uevent_skb: devpath
-	DevPath string `json:"devpath"`
-	// registered per-driver (optional)
-	ModAlias string `json:"modalias,omitempty"`
-	// dev_driver_uevent: drv->name (optional)
-	Driver string `json:"driver,omitempty"`
-
-	// SUBSYSTEM value set by the kernel.
-	Subsystem string `json:"subsystem"`
-
-	// Uninterpreted environment variable pairs. An entry missing a separator
-	// gains the value "\x00".
-	Env map[string]string `json:"env"`
-}
-
-// Clone returns the address of a copy of o.
-func (o *Object) Clone() *Object {
-	v := *o
-	v.Env = maps.Clone(o.Env)
-	return &v
-}
-
-// GoString returns compound literal for the underlying value.
-func (o *Object) GoString() string {
-	return fmt.Sprintf("&%#v", *o)
-}
-
-// merge merges uninterpreted environment variable pairs from an [Event].
-func (o *Object) merge(env map[string]string) {
-	for k, v := range env {
-		if v == "\x00" {
-			continue
-		}
-
-		switch k {
-		case "MODALIAS":
-			o.ModAlias = v
-			continue
-
-		case "DRIVER":
-			o.Driver = v
-			continue
-
-		default:
-			if o.Env == nil {
-				o.Env = make(map[string]string)
-			}
-			o.Env[k] = v
-		}
-	}
-}
-
-// update updates o with pairs from env, optionally stripping visited pairs.
-func (o *Object) update(env map[string]string, strip bool) {
-	for k := range o.Env {
-		if v, ok := env[k]; ok {
-			if strip {
-				delete(env, k)
-			}
-			o.Env[k] = v
-		}
-	}
-}
-
-// A pendingIterator is a callback currently iterating through objects targeted
-// by ongoing events.
-type pendingIterator struct {
-	f    func(o *Object, act uevent.KobjectAction) bool
-	done chan<- struct{}
-}
-
-// State processes a stream of [Event] populated from [uevent.Message] received
-// from a NETLINK_KOBJECT_UEVENT socket and presents an efficient representation
-// of kernel state.
-type State struct {
-	// Next expected SEQNUM.
-	seq uint64
-	// DevPath to environment variables.
-	uevent map[string]*Object
-	// Synchronises access to uevent and its objects.
-	ueventMu sync.RWMutex
-	// Alive iterators.
-	iter []*pendingIterator
-	// Synchronises access to iter.
-	iterMu sync.Mutex
-	// UUID for synthetic [uevent.Coldboot] events.
-	coldboot uevent.UUID
-	// Called on [uevent.KOBJ_CHANGE] with stripped environment variables.
-	handleChange func(o *Object, env map[string]string)
-	// Reports errors populating [Event] from [uevent.Message]. A user-supplied
-	// nil value is replaced with a noop.
-	reportErr func(error)
-}
-
-// New returns the address of a new [State].
-func New(
-	coldboot uevent.UUID,
-	handleChange func(o *Object, env map[string]string),
-	reportErr func(error),
-) *State {
-	return &State{
-		uevent:       make(map[string]*Object),
-		coldboot:     coldboot,
-		handleChange: handleChange,
-		reportErr:    reportErr,
-	}
-}
-
-// deleteIter removes an iterator from s. Must be called after acquiring iterMu.
-func (s *State) deleteIter(p *pendingIterator) {
-	s.iter = slices.DeleteFunc(s.iter, func(v *pendingIterator) bool {
-		return p == v
-	})
-}
-
-// dispatchIter broadcasts an [Object] to all alive iterators.
-func (s *State) dispatchIter(o *Object, act uevent.KobjectAction) {
-	s.iterMu.Lock()
-	defer s.iterMu.Unlock()
-
-	for _, p := range s.iter {
-		if !p.f(o, act) {
-			s.deleteIter(p)
-			close(p.done)
-		}
-	}
-}
-
-// Range calls f on all current and upcoming [Object] values tracked by s until
-// f returns false or the context is cancelled. f must not retain o or modify
-// the value it points to.
-func (s *State) Range(
-	ctx context.Context,
-	f func(o *Object, act uevent.KobjectAction) bool,
-) {
-	done := make(chan struct{})
-	p := pendingIterator{f, done}
-
-	s.iterMu.Lock()
-	s.ueventMu.RLock()
-	for _, o := range s.uevent {
-		if !f(o, uevent.KOBJ_ADD) {
-			s.ueventMu.RUnlock()
-			s.iterMu.Unlock()
-			return
-		}
-	}
-	s.ueventMu.RUnlock()
-	s.iter = append(s.iter, &p)
-	s.iterMu.Unlock()
-
-	select {
-	case <-ctx.Done():
-		s.iterMu.Lock()
-		s.deleteIter(&p)
-		s.iterMu.Unlock()
-		return
-
-	case <-done:
-		// deregistered by dispatchIter
-		return
-	}
-}
-
-// An EventError describes a malformed or inconsistent [Event].
-type EventError struct {
-	Kind int     `json:"fault"`
-	E    Event   `json:"event"`
-	O    *Object `json:"object,omitempty"`
-}
-
-var _ report.RepresentableError = EventError{}
-
-func (EventError) Representable() {}
-
-const (
-	// EUnexpectedColdboot is reported for a coldboot event with action other
-	// than the expected [uevent.KOBJ_ADD].
-	EUnexpectedColdboot = iota
-	// EDuplicateAdd is reported for a [uevent.KOBJ_ADD] event on a
-	// still-existing entry that was not the result of a coldboot.
-	EDuplicateAdd
-	// EBadTarget is reported for an event on a nonexistent [Object]. This is
-	// generally only possible before coldboot completes.
-	EBadTarget
-	// ERemoveState is reported for a [uevent.KOBJ_REMOVE] event targeting an
-	// entry in a state other than [StateColdboot] and [StateNew].
-	ERemoveState
-	// EUnexpectedOffline is reported for a [uevent.KOBJ_OFFLINE] or
-	// [uevent.KOBJ_ONLINE] event targeting an already offline or online object.
-	EUnexpectedOffline
-	// EBindState is reported for a [uevent.KOBJ_BIND] event targeting an entry
-	// in a state other than [StateColdboot] and [StateNew].
-	EBindState
-	// EUnbindState is reported for a [uevent.KOBJ_UNBIND] event targeting an
-	// entry in a state other than [StateBound].
-	EUnbindState
-	// EMalformedMove is reported for a [uevent.KOBJ_MOVE] event missing the
-	// DEVPATH_OLD environment variable.
-	EMalformedMove
-)
-
-func (e EventError) Error() string {
-	switch e.Kind {
-	case EUnexpectedColdboot:
-		return "unexpected " + e.E.Action.String() + " coldboot event"
-	case EDuplicateAdd:
-		return "duplicate add event on devpath " + strconv.Quote(e.E.DevPath)
-	case EBadTarget:
-		return "unexpected " + e.E.Action.String() + " event on devpath " +
-			strconv.Quote(e.E.DevPath)
-	case ERemoveState:
-		if e.O == nil {
-			return "invalid remove event error"
-		}
-		return "remove event targeting devpath " + strconv.Quote(e.E.DevPath) +
-			" in state " + strconv.Itoa(e.O.State)
-	case EUnexpectedOffline:
-		if e.O == nil {
-			return "invalid unexpected offline error"
-		}
-		if e.O.Offline {
-			return "offline event targeting devpath " + strconv.Quote(e.E.DevPath)
-		}
-		return "online event targeting devpath " + strconv.Quote(e.E.DevPath)
-	case EBindState:
-		if e.O == nil {
-			return "invalid bind state error"
-		}
-		return "bind event targeting devpath " + strconv.Quote(e.E.DevPath) +
-			" in state " + strconv.Itoa(e.O.State)
-	case EUnbindState:
-		if e.O == nil {
-			return "invalid unbind state error"
-		}
-		return "unbind event targeting devpath " + strconv.Quote(e.E.DevPath) +
-			" in state " + strconv.Itoa(e.O.State)
-	case EMalformedMove:
-		return "move event targeting devpath " + strconv.Quote(e.E.DevPath) +
-			" missing DEVPATH_OLD"
-
-	default:
-		return "invalid event error kind " + strconv.Itoa(e.Kind)
-	}
-}
-
-// NewError returns a new [EventError] for e and o.
-func (e *Event) NewError(kind int, o *Object) error {
-	if o != nil {
-		o = o.Clone()
-	}
-	return EventError{kind, e.Clone(), o}
-}
-
-// processEvent merges an event into s.
-func (s *State) processEvent(e *Event) {
-	s.ueventMu.Lock()
-	defer s.ueventMu.Unlock()
-
-	coldboot := e.Synth != nil
-	if e.Action != uevent.KOBJ_ADD && coldboot {
-		s.reportErr(e.NewError(EUnexpectedColdboot, nil))
-		return
-	}
-
-	switch act := e.Action; act {
-	case uevent.KOBJ_ADD:
-		if e.Synth == nil {
-			if o, ok := s.uevent[e.DevPath]; ok {
-				s.reportErr(e.NewError(EDuplicateAdd, o))
-				o.merge(e.Env)
-				s.dispatchIter(o, act)
-				return
-			}
-		}
-		o := e.makeColdboot()
-		if !coldboot {
-			o.State = StateNew
-		}
-		o.merge(e.Env)
-		s.uevent[e.DevPath] = o
-		s.dispatchIter(o, act)
-		return
-
-	case uevent.KOBJ_REMOVE:
-		if o, ok := s.uevent[e.DevPath]; !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			return
-		} else if o.State != StateColdboot && o.State != StateNew {
-			s.reportErr(e.NewError(ERemoveState, o))
-		}
-		delete(s.uevent, e.DevPath)
-		return
-
-	case uevent.KOBJ_CHANGE:
-		o, ok := s.uevent[e.DevPath]
-		if !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			// this suffers from the coldboot race window similar to KOBJ_MOVE,
-			// however this action combines driver-specific and change-specific
-			// environment variables and combines them with environment
-			// variables meant to convey state of the kobject, and it is not
-			// possible to reliably separate them, so this fallback avoids the
-			// race at the cost of including some garbage in tracked state
-			o = e.makeColdboot()
-			o.merge(e.Env)
-			s.uevent[e.DevPath] = o
-			s.dispatchIter(o, act)
-			return
-		}
-		o.update(e.Env, true)
-		if s.handleChange != nil {
-			s.handleChange(o, e.Env)
-		}
-		s.dispatchIter(o, act)
-		return
-
-	case uevent.KOBJ_MOVE:
-		var o *Object
-		if old, ok := e.Env["DEVPATH_OLD"]; !ok {
-			s.reportErr(e.NewError(EMalformedMove, nil))
-			// not reached
-			o = e.makeColdboot()
-		} else if o, ok = s.uevent[old]; !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			// this generally happens during coldboot, dropping the event here
-			// may cause inconsistent state if the coldboot event for this
-			// object was generated before the bind event
-			delete(e.Env, "DEVPATH_OLD")
-			o = e.makeColdboot()
-		} else {
-			delete(s.uevent, old)
-			delete(e.Env, "DEVPATH_OLD")
-		}
-		o.merge(e.Env)
-		s.uevent[e.DevPath] = o
-		o.DevPath = e.DevPath
-		s.dispatchIter(o, act)
-		return
-
-	case uevent.KOBJ_ONLINE:
-		o, ok := s.uevent[e.DevPath]
-		if !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			// coldboot race window similar to an unexpected KOBJ_MOVE
-			o = e.makeColdboot()
-			s.uevent[e.DevPath] = o
-			o.merge(e.Env)
-		}
-		if !o.Offline {
-			s.reportErr(e.NewError(EUnexpectedOffline, o))
-		}
-		o.Offline = false
-		s.dispatchIter(o, act)
-		return
-
-	case uevent.KOBJ_OFFLINE:
-		o, ok := s.uevent[e.DevPath]
-		if !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			// coldboot race window similar to an unexpected KOBJ_MOVE
-			o = e.makeColdboot()
-			s.uevent[e.DevPath] = o
-			o.merge(e.Env)
-		}
-		if o.Offline {
-			s.reportErr(e.NewError(EUnexpectedOffline, o))
-		}
-		o.Offline = true
-		s.dispatchIter(o, act)
-		return
-
-	case uevent.KOBJ_BIND:
-		o, ok := s.uevent[e.DevPath]
-		if !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			// coldboot race window similar to an unexpected KOBJ_MOVE
-			o = e.makeColdboot()
-			s.uevent[e.DevPath] = o
-		}
-		if o.State != StateColdboot && o.State != StateNew {
-			s.reportErr(e.NewError(EBindState, o))
-		}
-		o.State = StateBound
-		o.merge(e.Env)
-		s.dispatchIter(o, act)
-		return
-
-	case uevent.KOBJ_UNBIND:
-		o, ok := s.uevent[e.DevPath]
-		if !ok {
-			s.reportErr(e.NewError(EBadTarget, nil))
-			// coldboot race window similar to an unexpected KOBJ_MOVE, but does
-			// not result in inconsistent state if dropped
-			return
-		}
-		if o.State != StateBound {
-			s.reportErr(e.NewError(EUnbindState, o))
-		}
-		o.State = StateNew
-		o.Driver = ""
-		s.dispatchIter(o, act)
-		return
-
-	default: // not reached
-		s.reportErr(fmt.Errorf("invalid action %d", e.Action))
-		return
-	}
-}
-
-// BadSequenceError is reported for an unexpected SEQNUM.
-type BadSequenceError struct{ Got, Want uint64 }
-
-func (e BadSequenceError) Error() string {
-	return "SEQNUM=" + strconv.FormatUint(e.Got, 10) +
-		", want " + strconv.FormatUint(e.Want, 10)
-}
-
-// Consume receives uevent messages and updates s to reflect state of kernel.
-func (s *State) Consume(ctx context.Context, events <-chan *uevent.Message) {
-	if s.uevent == nil {
-		s.uevent = make(map[string]*Object)
-	}
-	if s.reportErr == nil {
-		s.reportErr = func(error) {}
-	}
-
-	var e Event
-	for {
-		select {
-		case <-ctx.Done():
-			return
-
-		case m, ok := <-events:
-			if !ok {
-				return
-			}
-			e.Populate(s.reportErr, m)
-
-			// skip external synthetic event
-			if e.Synth != nil && *e.Synth != s.coldboot {
-				continue
-			}
-
-			if s.seq == 0 {
-				s.seq = e.Sequence
-			}
-			if s.seq != e.Sequence {
-				s.reportErr(BadSequenceError{e.Sequence, s.seq})
-			}
-			s.seq++
-			s.processEvent(&e)
-		}
-	}
-}

internal/kobject/testdata/00-coldboot

@@ -1,266 +0,0 @@
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXPWRBN:00","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXPWRBN:00","SUBSYSTEM=acpi","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MODALIAS=acpi:LNXPWRBN:","SEQNUM=777"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXPWRBN:00/wakeup/wakeup7","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXPWRBN:00/wakeup/wakeup7","SUBSYSTEM=wakeup","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=778"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0010:00/LNXCPU:00","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0010:00/LNXCPU:00","SUBSYSTEM=acpi","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MODALIAS=acpi:LNXCPU:","SEQNUM=779"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0010:00","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0010:00","SUBSYSTEM=acpi","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MODALIAS=acpi:ACPI0010:PNP0A05:","SEQNUM=780"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0103:00","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0103:00","SUBSYSTEM=acpi","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MODALIAS=acpi:PNP0103:","SEQNUM=781"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0A06:00","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0A06:00","SUBSYSTEM=acpi","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MODALIAS=acpi:PNP0A06:","SEQNUM=782"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0A06:01","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/PNP0A06:01","SUBSYSTEM=acpi","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MODALIAS=acpi:PNP0A06:","SEQNUM=783"]}
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-{"action":"add","devpath":"/devices/virtual/tty/tty46","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty46","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=46","DEVNAME=tty46","SEQNUM=978"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty47","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty47","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=47","DEVNAME=tty47","SEQNUM=979"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty48","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty48","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=48","DEVNAME=tty48","SEQNUM=980"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty49","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty49","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=49","DEVNAME=tty49","SEQNUM=981"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty5","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty5","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=5","DEVNAME=tty5","SEQNUM=982"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty50","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty50","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=50","DEVNAME=tty50","SEQNUM=983"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty51","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty51","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=51","DEVNAME=tty51","SEQNUM=984"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty52","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty52","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=52","DEVNAME=tty52","SEQNUM=985"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty53","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty53","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=53","DEVNAME=tty53","SEQNUM=986"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty54","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty54","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=54","DEVNAME=tty54","SEQNUM=987"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty55","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty55","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=55","DEVNAME=tty55","SEQNUM=988"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty56","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty56","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=56","DEVNAME=tty56","SEQNUM=989"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty57","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty57","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=57","DEVNAME=tty57","SEQNUM=990"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty58","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty58","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=58","DEVNAME=tty58","SEQNUM=991"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty59","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty59","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=59","DEVNAME=tty59","SEQNUM=992"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty6","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty6","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=6","DEVNAME=tty6","SEQNUM=993"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty60","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty60","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=60","DEVNAME=tty60","SEQNUM=994"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty61","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty61","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=61","DEVNAME=tty61","SEQNUM=995"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty62","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty62","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=62","DEVNAME=tty62","SEQNUM=996"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty63","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty63","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=63","DEVNAME=tty63","SEQNUM=997"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty7","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty7","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=7","DEVNAME=tty7","SEQNUM=998"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty8","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty8","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=8","DEVNAME=tty8","SEQNUM=999"]}
-{"action":"add","devpath":"/devices/virtual/tty/tty9","env":["ACTION=add","DEVPATH=/devices/virtual/tty/tty9","SUBSYSTEM=tty","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=4","MINOR=9","DEVNAME=tty9","SEQNUM=1000"]}
-{"action":"add","devpath":"/devices/virtual/vc/vcs","env":["ACTION=add","DEVPATH=/devices/virtual/vc/vcs","SUBSYSTEM=vc","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=7","MINOR=0","DEVNAME=vcs","SEQNUM=1001"]}
-{"action":"add","devpath":"/devices/virtual/vc/vcs1","env":["ACTION=add","DEVPATH=/devices/virtual/vc/vcs1","SUBSYSTEM=vc","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=7","MINOR=1","DEVNAME=vcs1","SEQNUM=1002"]}
-{"action":"add","devpath":"/devices/virtual/vc/vcsa","env":["ACTION=add","DEVPATH=/devices/virtual/vc/vcsa","SUBSYSTEM=vc","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=7","MINOR=128","DEVNAME=vcsa","SEQNUM=1003"]}
-{"action":"add","devpath":"/devices/virtual/vc/vcsa1","env":["ACTION=add","DEVPATH=/devices/virtual/vc/vcsa1","SUBSYSTEM=vc","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=7","MINOR=129","DEVNAME=vcsa1","SEQNUM=1004"]}
-{"action":"add","devpath":"/devices/virtual/vc/vcsu","env":["ACTION=add","DEVPATH=/devices/virtual/vc/vcsu","SUBSYSTEM=vc","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=7","MINOR=64","DEVNAME=vcsu","SEQNUM=1005"]}
-{"action":"add","devpath":"/devices/virtual/vc/vcsu1","env":["ACTION=add","DEVPATH=/devices/virtual/vc/vcsu1","SUBSYSTEM=vc","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","MAJOR=7","MINOR=65","DEVNAME=vcsu1","SEQNUM=1006"]}
-{"action":"add","devpath":"/devices/virtual/vtconsole/vtcon0","env":["ACTION=add","DEVPATH=/devices/virtual/vtconsole/vtcon0","SUBSYSTEM=vtconsole","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1007"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/nvme-auth-wq","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/nvme-auth-wq","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1008"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/nvme-delete-wq","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/nvme-delete-wq","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1009"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/nvme-reset-wq","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/nvme-reset-wq","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1010"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/nvme-wq","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/nvme-wq","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1011"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/scsi_tmf_0","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/scsi_tmf_0","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1012"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/scsi_tmf_1","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/scsi_tmf_1","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1013"]}
-{"action":"add","devpath":"/devices/virtual/workqueue/writeback","env":["ACTION=add","DEVPATH=/devices/virtual/workqueue/writeback","SUBSYSTEM=workqueue","SYNTH_UUID=fe4d7c9d-b8c6-4a70-9ef1-3d8a58d18eed","SEQNUM=1014"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/wakeup/wakeup8","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/wakeup/wakeup8","SUBSYSTEM=wakeup","SEQNUM=1015"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:04.0","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:04.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:04.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1016"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:04.0/virtio1","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:04.0/virtio1","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1017"]}
-{"action":"bind","devpath":"/devices/pci0000:00/0000:00:04.0","env":["ACTION=bind","DEVPATH=/devices/pci0000:00/0000:00:04.0","SUBSYSTEM=pci","DRIVER=virtio-pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:04.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1018"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","SUBSYSTEM=wakeup","SEQNUM=1019"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1020"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:05.0/virtio2","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:05.0/virtio2","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1021"]}
-{"action":"bind","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=bind","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","DRIVER=virtio-pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1022"]}
-{"action":"remove","devpath":"/devices/pci0000:00/0000:00:04.0/virtio1","env":["ACTION=remove","DEVPATH=/devices/pci0000:00/0000:00:04.0/virtio1","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1023"]}
-{"action":"unbind","devpath":"/devices/pci0000:00/0000:00:04.0","env":["ACTION=unbind","DEVPATH=/devices/pci0000:00/0000:00:04.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:04.0","SEQNUM=1024"]}
-{"action":"remove","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/wakeup/wakeup8","env":["ACTION=remove","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/wakeup/wakeup8","SUBSYSTEM=wakeup","SEQNUM=1025"]}
-{"action":"remove","devpath":"/devices/pci0000:00/0000:00:04.0","env":["ACTION=remove","DEVPATH=/devices/pci0000:00/0000:00:04.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:04.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1026"]}
-{"action":"remove","devpath":"/devices/pci0000:00/0000:00:05.0/virtio2","env":["ACTION=remove","DEVPATH=/devices/pci0000:00/0000:00:05.0/virtio2","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1027"]}
-{"action":"unbind","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=unbind","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","SEQNUM=1028"]}
-{"action":"remove","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","env":["ACTION=remove","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","SUBSYSTEM=wakeup","SEQNUM=1029"]}
-{"action":"remove","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=remove","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1030"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/wakeup/wakeup8","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:07/wakeup/wakeup8","SUBSYSTEM=wakeup","SEQNUM=1031"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:04.0","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:04.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:04.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1032"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:04.0/virtio1","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:04.0/virtio1","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1033"]}
-{"action":"bind","devpath":"/devices/pci0000:00/0000:00:04.0","env":["ACTION=bind","DEVPATH=/devices/pci0000:00/0000:00:04.0","SUBSYSTEM=pci","DRIVER=virtio-pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:04.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1034"]}
-{"action":"add","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","env":["ACTION=add","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","SUBSYSTEM=wakeup","SEQNUM=1035"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1036"]}
-{"action":"add","devpath":"/devices/pci0000:00/0000:00:05.0/virtio2","env":["ACTION=add","DEVPATH=/devices/pci0000:00/0000:00:05.0/virtio2","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1037"]}
-{"action":"bind","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=bind","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","DRIVER=virtio-pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1038"]}
-{"action":"remove","devpath":"/devices/pci0000:00/0000:00:05.0/virtio2","env":["ACTION=remove","DEVPATH=/devices/pci0000:00/0000:00:05.0/virtio2","SUBSYSTEM=virtio","MODALIAS=virtio:d00000019v00001AF4","SEQNUM=1039"]}
-{"action":"unbind","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=unbind","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","SEQNUM=1040"]}
-{"action":"remove","devpath":"/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","env":["ACTION=remove","DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/device:08/wakeup/wakeup9","SUBSYSTEM=wakeup","SEQNUM=1041"]}
-{"action":"remove","devpath":"/devices/pci0000:00/0000:00:05.0","env":["ACTION=remove","DEVPATH=/devices/pci0000:00/0000:00:05.0","SUBSYSTEM=pci","PCI_CLASS=40100","PCI_ID=1AF4:1059","PCI_SUBSYS_ID=1AF4:1100","PCI_SLOT_NAME=0000:00:05.0","MODALIAS=pci:v00001AF4d00001059sv00001AF4sd00001100bc04sc01i00","SEQNUM=1042"]}

internal/kobject/testdata/01-move

@@ -1 +0,0 @@
-{"action":"move","devpath":"/devices/virtual/net/_lo","env":["ACTION=move","DEVPATH=/devices/virtual/net/_lo","SUBSYSTEM=net","DEVPATH_OLD=/devices/virtual/net/lo","INTERFACE=_lo","IFINDEX=1","SEQNUM=1043"]}

internal/kobject/testdata/02-cpu

@@ -1,8 +0,0 @@
-{"action":"remove","devpath":"/devices/system/machinecheck/machinecheck0","env":["ACTION=remove","DEVPATH=/devices/system/machinecheck/machinecheck0","SUBSYSTEM=machinecheck","SEQNUM=1044"]}
-{"action":"offline","devpath":"/devices/system/cpu/cpu0","env":["ACTION=offline","DEVPATH=/devices/system/cpu/cpu0","SUBSYSTEM=cpu","DRIVER=processor","MODALIAS=cpu:type:x86,ven0002fam000Fmod006B:feature:,0000,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,000D,000E,000F,0010,0011,0013,0017,0018,0019,001A,001C,0020,0022,0023,0024,0025,0026,0027,0028,0029,002B,002C,002D,002E,002F,0030,0031,0034,0037,0038,003D,0064,006E,0070,0074,0075,0076,0079,007A,007F,0080,008D,0095,009F,00C0,00C1,00C8,00ED,00F3,010F,0115,0165,016C,0282\n","SEQNUM=1045"]}
-{"action":"add","devpath":"/devices/system/machinecheck/machinecheck0","env":["ACTION=add","DEVPATH=/devices/system/machinecheck/machinecheck0","SUBSYSTEM=machinecheck","SEQNUM=1046"]}
-{"action":"online","devpath":"/devices/system/cpu/cpu0","env":["ACTION=online","DEVPATH=/devices/system/cpu/cpu0","SUBSYSTEM=cpu","DRIVER=processor","MODALIAS=cpu:type:x86,ven0002fam000Fmod006B:feature:,0000,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,000D,000E,000F,0010,0011,0013,0017,0018,0019,001A,001C,0020,0022,0023,0024,0025,0026,0027,0028,0029,002B,002C,002D,002E,002F,0030,0031,0034,0037,0038,003D,0064,006E,0070,0074,0075,0076,0079,007A,007F,0080,008D,0095,009F,00C0,00C1,00C8,00ED,00F3,010F,0115,0165,016C,0282\n","SEQNUM=1047"]}
-{"action":"remove","devpath":"/devices/system/machinecheck/machinecheck0","env":["ACTION=remove","DEVPATH=/devices/system/machinecheck/machinecheck0","SUBSYSTEM=machinecheck","SEQNUM=1048"]}
-{"action":"offline","devpath":"/devices/system/cpu/cpu0","env":["ACTION=offline","DEVPATH=/devices/system/cpu/cpu0","SUBSYSTEM=cpu","DRIVER=processor","MODALIAS=cpu:type:x86,ven0002fam000Fmod006B:feature:,0000,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,000D,000E,000F,0010,0011,0013,0017,0018,0019,001A,001C,0020,0022,0023,0024,0025,0026,0027,0028,0029,002B,002C,002D,002E,002F,0030,0031,0034,0037,0038,003D,0064,006E,0070,0074,0075,0076,0079,007A,007F,0080,008D,0095,009F,00C0,00C1,00C8,00ED,00F3,010F,0115,0165,016C,0282\n","SEQNUM=1049"]}
-{"action":"add","devpath":"/devices/system/machinecheck/machinecheck0","env":["ACTION=add","DEVPATH=/devices/system/machinecheck/machinecheck0","SUBSYSTEM=machinecheck","SEQNUM=1050"]}
-{"action":"online","devpath":"/devices/system/cpu/cpu0","env":["ACTION=online","DEVPATH=/devices/system/cpu/cpu0","SUBSYSTEM=cpu","DRIVER=processor","MODALIAS=cpu:type:x86,ven0002fam000Fmod006B:feature:,0000,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,000D,000E,000F,0010,0011,0013,0017,0018,0019,001A,001C,0020,0022,0023,0024,0025,0026,0027,0028,0029,002B,002C,002D,002E,002F,0030,0031,0034,0037,0038,003D,0064,006E,0070,0074,0075,0076,0079,007A,007F,0080,008D,0095,009F,00C0,00C1,00C8,00ED,00F3,010F,0115,0165,016C,0282\n","SEQNUM=1051"]}

internal/kobject/testdata/03-loop

@@ -1,19 +0,0 @@
-{"action":"add","devpath":"/devices/virtual/misc/loop-control","env":["ACTION=add","DEVPATH=/devices/virtual/misc/loop-control","SUBSYSTEM=misc","MAJOR=10","MINOR=237","DEVNAME=loop-control","SEQNUM=1052"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:0","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:0","SUBSYSTEM=bdi","SEQNUM=1053"]}
-{"action":"add","devpath":"/devices/virtual/block/loop0","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop0","SUBSYSTEM=block","MAJOR=7","MINOR=0","DEVNAME=loop0","DEVTYPE=disk","DISKSEQ=2","SEQNUM=1054"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:1","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:1","SUBSYSTEM=bdi","SEQNUM=1055"]}
-{"action":"add","devpath":"/devices/virtual/block/loop1","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop1","SUBSYSTEM=block","MAJOR=7","MINOR=1","DEVNAME=loop1","DEVTYPE=disk","DISKSEQ=3","SEQNUM=1056"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:2","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:2","SUBSYSTEM=bdi","SEQNUM=1057"]}
-{"action":"add","devpath":"/devices/virtual/block/loop2","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop2","SUBSYSTEM=block","MAJOR=7","MINOR=2","DEVNAME=loop2","DEVTYPE=disk","DISKSEQ=4","SEQNUM=1058"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:3","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:3","SUBSYSTEM=bdi","SEQNUM=1059"]}
-{"action":"add","devpath":"/devices/virtual/block/loop3","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop3","SUBSYSTEM=block","MAJOR=7","MINOR=3","DEVNAME=loop3","DEVTYPE=disk","DISKSEQ=5","SEQNUM=1060"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:4","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:4","SUBSYSTEM=bdi","SEQNUM=1061"]}
-{"action":"add","devpath":"/devices/virtual/block/loop4","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop4","SUBSYSTEM=block","MAJOR=7","MINOR=4","DEVNAME=loop4","DEVTYPE=disk","DISKSEQ=6","SEQNUM=1062"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:5","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:5","SUBSYSTEM=bdi","SEQNUM=1063"]}
-{"action":"add","devpath":"/devices/virtual/block/loop5","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop5","SUBSYSTEM=block","MAJOR=7","MINOR=5","DEVNAME=loop5","DEVTYPE=disk","DISKSEQ=7","SEQNUM=1064"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:6","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:6","SUBSYSTEM=bdi","SEQNUM=1065"]}
-{"action":"add","devpath":"/devices/virtual/block/loop6","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop6","SUBSYSTEM=block","MAJOR=7","MINOR=6","DEVNAME=loop6","DEVTYPE=disk","DISKSEQ=8","SEQNUM=1066"]}
-{"action":"add","devpath":"/devices/virtual/bdi/7:7","env":["ACTION=add","DEVPATH=/devices/virtual/bdi/7:7","SUBSYSTEM=bdi","SEQNUM=1067"]}
-{"action":"add","devpath":"/devices/virtual/block/loop7","env":["ACTION=add","DEVPATH=/devices/virtual/block/loop7","SUBSYSTEM=block","MAJOR=7","MINOR=7","DEVNAME=loop7","DEVTYPE=disk","DISKSEQ=9","SEQNUM=1068"]}
-{"action":"add","devpath":"/module/loop","env":["ACTION=add","DEVPATH=/module/loop","SUBSYSTEM=module","SEQNUM=1069"]}
-{"action":"change","devpath":"/devices/virtual/block/loop0","env":["ACTION=change","DEVPATH=/devices/virtual/block/loop0","SUBSYSTEM=block","MAJOR=7","MINOR=0","DEVNAME=loop0","DEVTYPE=disk","DISKSEQ=10","SEQNUM=1070"]}

internal/kobject/testdata/04-loop-detach

@@ -1,2 +0,0 @@
-{"action":"change","devpath":"/devices/virtual/block/loop0","env":["ACTION=change","DEVPATH=/devices/virtual/block/loop0","SUBSYSTEM=block","MAJOR=7","MINOR=0","DEVNAME=loop0","DEVTYPE=disk","DISKSEQ=10","SEQNUM=1071"]}
-{"action":"change","devpath":"/devices/virtual/block/loop0","env":["ACTION=change","DEVPATH=/devices/virtual/block/loop0","SUBSYSTEM=block","DISK_MEDIA_CHANGE=1","MAJOR=7","MINOR=0","DEVNAME=loop0","DEVTYPE=disk","DISKSEQ=10","SEQNUM=1072"]}

internal/kobject/testdata/05-loop-remove

@@ -1,18 +0,0 @@
-{"action":"remove","devpath":"/devices/virtual/misc/loop-control","env":["ACTION=remove","DEVPATH=/devices/virtual/misc/loop-control","SUBSYSTEM=misc","MAJOR=10","MINOR=237","DEVNAME=loop-control","SEQNUM=1073"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:0","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:0","SUBSYSTEM=bdi","SEQNUM=1074"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop0","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop0","SUBSYSTEM=block","MAJOR=7","MINOR=0","DEVNAME=loop0","DEVTYPE=disk","DISKSEQ=11","SEQNUM=1075"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:1","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:1","SUBSYSTEM=bdi","SEQNUM=1076"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop1","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop1","SUBSYSTEM=block","MAJOR=7","MINOR=1","DEVNAME=loop1","DEVTYPE=disk","DISKSEQ=3","SEQNUM=1077"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:2","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:2","SUBSYSTEM=bdi","SEQNUM=1078"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop2","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop2","SUBSYSTEM=block","MAJOR=7","MINOR=2","DEVNAME=loop2","DEVTYPE=disk","DISKSEQ=4","SEQNUM=1079"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:3","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:3","SUBSYSTEM=bdi","SEQNUM=1080"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop3","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop3","SUBSYSTEM=block","MAJOR=7","MINOR=3","DEVNAME=loop3","DEVTYPE=disk","DISKSEQ=5","SEQNUM=1081"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:4","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:4","SUBSYSTEM=bdi","SEQNUM=1082"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop4","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop4","SUBSYSTEM=block","MAJOR=7","MINOR=4","DEVNAME=loop4","DEVTYPE=disk","DISKSEQ=6","SEQNUM=1083"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:5","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:5","SUBSYSTEM=bdi","SEQNUM=1084"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop5","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop5","SUBSYSTEM=block","MAJOR=7","MINOR=5","DEVNAME=loop5","DEVTYPE=disk","DISKSEQ=7","SEQNUM=1085"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:6","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:6","SUBSYSTEM=bdi","SEQNUM=1086"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop6","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop6","SUBSYSTEM=block","MAJOR=7","MINOR=6","DEVNAME=loop6","DEVTYPE=disk","DISKSEQ=8","SEQNUM=1087"]}
-{"action":"remove","devpath":"/devices/virtual/bdi/7:7","env":["ACTION=remove","DEVPATH=/devices/virtual/bdi/7:7","SUBSYSTEM=bdi","SEQNUM=1088"]}
-{"action":"remove","devpath":"/devices/virtual/block/loop7","env":["ACTION=remove","DEVPATH=/devices/virtual/block/loop7","SUBSYSTEM=block","MAJOR=7","MINOR=7","DEVNAME=loop7","DEVTYPE=disk","DISKSEQ=9","SEQNUM=1089"]}
-{"action":"remove","devpath":"/module/loop","env":["ACTION=remove","DEVPATH=/module/loop","SUBSYSTEM=module","SEQNUM=1090"]}

internal/lockedfile/transform_test.go

@@ -40,7 +40,7 @@ func TestTransform(t *testing.T) {
 
 	const maxChunkWords = 8 << 10
 	buf := make([]byte, 2*maxChunkWords*8)
-	for i := range uint64(2 * maxChunkWords) {
+	for i := uint64(0); i < 2*maxChunkWords; i++ {
 		binary.LittleEndian.PutUint64(buf[i*8:], i)
 	}
 	if err := lockedfile.Write(path, bytes.NewReader(buf[:8]), 0666); err != nil {

internal/outcome/finalise.go

@@ -58,7 +58,8 @@ func (k *outcome) finalise(
 	supp := make([]string, len(config.Groups))
 	for i, name := range config.Groups {
 		if gid, err := k.lookupGroupId(name); err != nil {
-			if unknownGroupError, ok := errors.AsType[user.UnknownGroupError](err); ok {
+			var unknownGroupError user.UnknownGroupError
+			if errors.As(err, &unknownGroupError) {
 				return newWithMessageError(fmt.Sprintf("unknown group %q", name), unknownGroupError)
 			} else {
 				return &hst.AppError{Step: "look up group by name", Err: err, Msg: err.Error()}

internal/outcome/hsu.go

@@ -51,16 +51,18 @@ func (h *Hsu) ID() (int, error) {
 		cmd.Stderr = os.Stderr // pass through fatal messages
 		cmd.Env = make([]string, 0)
 		cmd.Dir = fhs.Root
-		var p []byte
+		var (
+			p         []byte
+			exitError *exec.ExitError
+		)
+
 		const step = "obtain uid from hsu"
 		if p, h.idErr = h.k.cmdOutput(cmd); h.idErr == nil {
 			h.id, h.idErr = strconv.Atoi(string(p))
 			if h.idErr != nil {
 				h.idErr = &hst.AppError{Step: step, Err: h.idErr, Msg: "invalid uid string from hsu"}
 			}
-		} else if exitError, ok := errors.AsType[*exec.ExitError](h.idErr); ok &&
-			exitError != nil &&
-			exitError.ExitCode() == 1 {
+		} else if errors.As(h.idErr, &exitError) && exitError != nil && exitError.ExitCode() == 1 {
 			// hsu prints an error message in this case
 			h.idErr = &hst.AppError{Step: step, Err: ErrHsuAccess}
 		} else if errors.Is(h.idErr, os.ErrNotExist) {

internal/outcome/process.go

@@ -328,11 +328,11 @@ func (k *outcome) main(msg message.Msg, identifierFd int) {
 				}
 
 				if err := k.sys.Revert((*system.Criteria)(&ec)); err != nil {
-					joinError, ok := errors.AsType[interface {
+					var joinError interface {
 						Unwrap() []error
 						error
-					}](err)
-					if !ok || joinError == nil {
+					}
+					if !errors.As(err, &joinError) || joinError == nil {
 						perror(err, "revert system setup")
 					} else {
 						for _, v := range joinError.Unwrap() {

internal/outcome/run_test.go

@@ -136,7 +136,6 @@ func TestOutcomeRun(t *testing.T) {
 				Tmpfs(fhs.AbsDevShm, 0, 01777).
 
 				// spRuntimeOp
-				Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755).
 				Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755).
 				Bind(m("/tmp/hakurei.0/runtime/9"), m("/run/user/1971"), std.BindWritable).
 

internal/outcome/shim.go

@@ -390,8 +390,8 @@ func shimEntrypoint(k syscallDispatcher) {
 	if err := k.containerWait(z); err != nil {
 		sp.destroy()
 
-		exitError, ok := errors.AsType[*exec.ExitError](err)
-		if !ok {
+		var exitError *exec.ExitError
+		if !errors.As(err, &exitError) {
 			if errors.Is(err, context.Canceled) {
 				k.exit(hst.ExitCancel)
 			}

internal/outcome/shim_test.go

@@ -71,7 +71,6 @@ func TestShimEntrypoint(t *testing.T) {
 			Tmpfs(fhs.AbsDevShm, 0, 01777).
 
 			// spRuntimeOp
-			Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755).
 			Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755).
 			Bind(m("/tmp/hakurei.10/runtime/9999"), m("/run/user/1000"), std.BindWritable).
 

internal/outcome/spcontainer.go

@@ -382,10 +382,6 @@ func (p opsAdapter) Overlay(target, state, work *check.Absolute, layers ...*chec
 	return opsAdapter{p.Ops.Overlay(target, state, work, layers...)}
 }
 
-func (p opsAdapter) OverlayEphemeral(target *check.Absolute, layers ...*check.Absolute) hst.Ops {
-	return opsAdapter{p.Ops.OverlayEphemeral(target, layers...)}
-}
-
 func (p opsAdapter) OverlayReadonly(target *check.Absolute, layers ...*check.Absolute) hst.Ops {
 	return opsAdapter{p.Ops.OverlayReadonly(target, layers...)}
 }

internal/outcome/spruntime.go

@@ -113,9 +113,6 @@ func (s *spRuntimeOp) toContainer(state *outcomeStateParams) error {
 
 	}
 
-	if state.Container.Flags&hst.FCoverRun != 0 {
-		state.params.Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755)
-	}
 	state.params.Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755)
 	if state.Container.Flags&hst.FShareRuntime != 0 {
 		_, runtimeDirInst := s.commonPaths(state.outcomeState)

internal/outcome/spruntime_test.go

@@ -40,7 +40,6 @@ func TestSpRuntimeOp(t *testing.T) {
 			// this op configures the container state and does not make calls during toContainer
 		}, &container.Params{
 			Ops: new(container.Ops).
-				Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755).
 				Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755).
 				Bind(m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), m("/run/user/1000"), std.BindWritable),
 		}, paramsWantEnv(config, map[string]string{
@@ -68,7 +67,6 @@ func TestSpRuntimeOp(t *testing.T) {
 			// this op configures the container state and does not make calls during toContainer
 		}, &container.Params{
 			Ops: new(container.Ops).
-				Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755).
 				Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755).
 				Bind(m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), m("/run/user/1000"), std.BindWritable),
 		}, paramsWantEnv(config, map[string]string{
@@ -96,7 +94,6 @@ func TestSpRuntimeOp(t *testing.T) {
 			// this op configures the container state and does not make calls during toContainer
 		}, &container.Params{
 			Ops: new(container.Ops).
-				Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755).
 				Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755).
 				Bind(m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), m("/run/user/1000"), std.BindWritable),
 		}, paramsWantEnv(config, map[string]string{
@@ -120,7 +117,6 @@ func TestSpRuntimeOp(t *testing.T) {
 			// this op configures the container state and does not make calls during toContainer
 		}, &container.Params{
 			Ops: new(container.Ops).
-				Tmpfs(fhs.AbsRun, xdgRuntimeDirSize, 0755).
 				Tmpfs(fhs.AbsRunUser, xdgRuntimeDirSize, 0755).
 				Bind(m("/proc/nonexistent/tmp/hakurei.0/runtime/9"), m("/run/user/1000"), std.BindWritable),
 		}, paramsWantEnv(config, map[string]string{

internal/pipewire/pod.go

@@ -176,8 +176,8 @@ func marshalValueAppendRaw(data []byte, v reflect.Value) ([]byte, error) {
 	case reflect.Struct:
 		data = SPA_TYPE_Struct.append(data)
 		var err error
-		for _, field := range v.Fields() {
-			data, err = marshalValueAppend(data, field)
+		for i := 0; i < v.NumField(); i++ {
+			data, err = marshalValueAppend(data, v.Field(i))
 			if err != nil {
 				return data, err
 			}
@@ -370,8 +370,8 @@ func unmarshalValue(data []byte, v reflect.Value, wireSizeP *Word) error {
 		}
 
 		var fieldWireSize Word
-		for _, field := range v.Fields() {
-			if err := unmarshalValue(data, field, &fieldWireSize); err != nil {
+		for i := 0; i < v.NumField(); i++ {
+			if err := unmarshalValue(data, v.Field(i), &fieldWireSize); err != nil {
 				return err
 			}
 			// bounds check completed in successful call to unmarshalValue

internal/pkg/archive.go

@@ -1,405 +0,0 @@
-package pkg
-
-import (
-	"crypto/sha512"
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-	"io/fs"
-	"os"
-	"path/filepath"
-	"unsafe"
-
-	"hakurei.app/check"
-)
-
-/*
-| mode uint32 | path_sz uint32 |
-|        data_sz uint64        |
-|         path string          |
-|         data []byte          |
-*/
-
-// An ArchiveHeader represents a single header in an archive.
-type ArchiveHeader struct {
-	Mode fs.FileMode // file mode bits
-	Path string      // pathname of the file
-	Size uint64      // size of data segment
-}
-
-// Writer implements sequential writing of an archive. [Writer.WriteHeader]
-// begins a new file with the provided [ArchiveHeader], and then Writer can be
-// treated as an [io.Writer] to supply that file's data.
-//
-// It is the caller's responsibility to write entries in lexical order.
-type Writer struct {
-	// Underlying writer.
-	w io.Writer
-	// Current header.
-	h ArchiveHeader
-	// Fixed-size header segment.
-	buf [wordSize * 2]byte
-	// Current position in data segment.
-	n uint64
-}
-
-// NewWriter returns the address of a new [Writer] writing to w.
-func NewWriter(w io.Writer) *Writer { return &Writer{w: w} }
-
-var zero [wordSize]byte
-
-// padSize returns the padding size for aligning sz.
-func padSize[T int | uint64](sz T) T {
-	return (wordSize - (sz)%wordSize) % wordSize
-}
-
-// flush concludes writing to the current file and writes padding.
-func (aw *Writer) flush() error {
-	if aw.h.Size > aw.n {
-		return fmt.Errorf("missed writing %d bytes", aw.h.Size-aw.n)
-	} else if aw.h.Size < aw.n {
-		return fmt.Errorf("wrote %d bytes beyond end of file", aw.n-aw.h.Size)
-	}
-
-	if psz := padSize(aw.h.Size); psz != 0 {
-		if _, err := aw.w.Write(zero[:psz]); err != nil {
-			return err
-		}
-	}
-
-	aw.n = 0
-	return nil
-}
-
-// WriteHeader writes h and begins accepting its corresponding file.
-func (aw *Writer) WriteHeader(h *ArchiveHeader) error {
-	if err := aw.flush(); err != nil {
-		return err
-	}
-
-	aw.h = *h
-	binary.LittleEndian.PutUint32(aw.buf[:], uint32(aw.h.Mode))
-	binary.LittleEndian.PutUint32(aw.buf[wordSize/2:], uint32(len(aw.h.Path)))
-	binary.LittleEndian.PutUint64(aw.buf[wordSize:], aw.h.Size)
-	if _, err := aw.w.Write(aw.buf[:]); err != nil {
-		return err
-	} else if _, err = aw.w.Write(
-		unsafe.Slice(unsafe.StringData(aw.h.Path), len(aw.h.Path)),
-	); err != nil {
-		return err
-	} else if psz := padSize(len(aw.h.Path)); psz != 0 {
-		if _, err = aw.w.Write(zero[:psz]); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// Write writes p to the underlying writer and records the new position. Invalid
-// positions are reported by WriteHeader and Close.
-func (aw *Writer) Write(p []byte) (n int, err error) {
-	n, err = aw.w.Write(p)
-	aw.n += uint64(n)
-	return
-}
-
-// Close concludes writing to the archive stream.
-func (aw *Writer) Close() (err error) {
-	err = aw.flush()
-	aw.w = nil
-	return
-}
-
-// ErrInsecurePath is returned by [FlatEntry.Decode] if validation is requested
-// and a nonlocal path is encountered in the stream.
-var ErrInsecurePath = errors.New("insecure file path")
-
-// Reader implements sequential reading of an archive. [Reader.Next] advances to
-// the next file in the archive (including the first), and then Reader can be
-// treated as an [io.Reader] to access the file's data.
-type Reader struct {
-	// Underlying reader.
-	r io.Reader
-	// Fixed-size header segment.
-	buf [wordSize * 2]byte
-	// Remaining bytes in current data segment.
-	n, pad uint64
-}
-
-// NewReader returns the address of a new [Reader] reading from r.
-func NewReader(r io.Reader) *Reader { return &Reader{r: r} }
-
-// Next advances ar to the next entry. Remaining bytes of the current data
-// segment are discarded. Advancing beyond the final entry returns [io.EOF].
-func (ar *Reader) Next() (*ArchiveHeader, error) {
-	if dsz := int64(ar.n + ar.pad); dsz > 0 {
-		if n, err := io.CopyN(io.Discard, ar.r, dsz); err != nil {
-			if errors.Is(err, io.EOF) && n != dsz {
-				err = io.ErrUnexpectedEOF
-			}
-			return nil, err
-		}
-	}
-
-	if _, err := io.ReadFull(ar.r, ar.buf[:]); err != nil {
-		return nil, err
-	}
-
-	h := ArchiveHeader{
-		Mode: fs.FileMode(binary.LittleEndian.Uint32(ar.buf[:])),
-		Size: binary.LittleEndian.Uint64(ar.buf[wordSize:]),
-	}
-	pathSize := int(binary.LittleEndian.Uint32(ar.buf[wordSize/2:]))
-	pPathSize := alignSize(pathSize)
-
-	buf := make([]byte, pPathSize)
-	if _, err := io.ReadFull(ar.r, buf); err != nil {
-		if errors.Is(err, io.EOF) {
-			err = io.ErrUnexpectedEOF
-		}
-		return nil, err
-	}
-
-	h.Path = unsafe.String(unsafe.SliceData(buf), pathSize)
-	if !filepath.IsLocal(h.Path) {
-		return &h, ErrInsecurePath
-	}
-
-	ar.n = h.Size
-	ar.pad = padSize(h.Size)
-	return &h, nil
-}
-
-// Read implements [io.Reader] for the data segment of the current entry.
-func (ar *Reader) Read(p []byte) (n int, err error) {
-	if uint64(len(p)) > ar.n {
-		p = p[:ar.n]
-	}
-
-	if len(p) > 0 {
-		n, err = ar.r.Read(p)
-		ar.n -= uint64(n)
-	}
-
-	switch err {
-	case io.EOF:
-		if ar.n > 0 {
-			return n, io.ErrUnexpectedEOF
-		}
-
-	case nil:
-		if ar.n == 0 {
-			return n, io.EOF
-		}
-	}
-	return
-}
-
-// Write writes a deterministic representation of the contents of fsys to w.
-// The resulting data can be hashed to produce a deterministic checksum for the
-// directory.
-func Write(fsys fs.FS, root string, w io.Writer) error {
-	aw := NewWriter(w)
-	if err := fs.WalkDir(fsys, root, func(path string, d fs.DirEntry, err error) error {
-		if err != nil {
-			return err
-		}
-
-		var fi fs.FileInfo
-		fi, err = d.Info()
-		if err != nil {
-			return err
-		}
-
-		h := ArchiveHeader{
-			Path: path,
-			Mode: fi.Mode(),
-		}
-		if h.Mode.IsRegular() {
-			h.Size = uint64(fi.Size())
-			if err = aw.WriteHeader(&h); err != nil {
-				return err
-			}
-
-			var r fs.File
-			r, err = fsys.Open(path)
-			if err != nil {
-				return err
-			}
-			_, err = io.Copy(aw, r)
-			if _err := r.Close(); err == nil {
-				err = _err
-			}
-			return err
-		} else if h.Mode&fs.ModeSymlink != 0 {
-			var newpath string
-			if newpath, err = fs.ReadLink(fsys, path); err != nil {
-				return err
-			}
-
-			h.Size = uint64(len(newpath))
-			if err = aw.WriteHeader(&h); err != nil {
-				return err
-			}
-
-			_, err = aw.Write(unsafe.Slice(unsafe.StringData(newpath), len(newpath)))
-			return err
-		} else if !h.Mode.IsDir() {
-			return InvalidFileModeError(h.Mode)
-		}
-		return aw.WriteHeader(&h)
-	}); err != nil {
-		return err
-	}
-	return aw.Close()
-}
-
-// SumFS saves checksum of the archive of fsys to the value pointed to by buf.
-func SumFS(buf *Checksum, fsys fs.FS, root string) error {
-	h := sha512.New384()
-	if err := Write(fsys, root, h); err != nil {
-		return err
-	}
-	h.Sum(buf[:0])
-	return nil
-}
-
-// SumDir saves checksum of the archive of directory at pathname to the value
-// pointed to by buf.
-func SumDir(buf *Checksum, pathname *check.Absolute) error {
-	return SumFS(buf, os.DirFS(pathname.String()), ".")
-}
-
-// archiveArtifact is an [Artifact] unpacking an archive supported by [Reader]
-// backed by a [FileArtifact].
-type archiveArtifact struct {
-	// Caller-supplied backing archive.
-	f Artifact
-}
-
-// NewArchive returns a new [Artifact] backed by the supplied [Artifact]. The
-// source [Artifact] must be a [FileArtifact] and produce a stream compatible
-// with [Reader].
-func NewArchive(a Artifact) Artifact {
-	return archiveArtifact{a}
-}
-
-// Kind returns the hardcoded [Kind] constant.
-func (archiveArtifact) Kind() Kind { return KindArchive }
-
-// Params is a noop.
-func (archiveArtifact) Params(*IContext) {}
-
-func init() {
-	register(KindArchive, func(r *IRReader) Artifact {
-		a := NewArchive(r.Next())
-		if _, ok := r.Finalise(); ok {
-			panic(ErrUnexpectedChecksum)
-		}
-		return a
-	})
-}
-
-// Dependencies returns a slice containing the backing file.
-func (a archiveArtifact) Dependencies() []Artifact {
-	return []Artifact{a.f}
-}
-
-// IsExclusive returns false: [Reader] is fully sequential.
-func (archiveArtifact) IsExclusive() bool { return false }
-
-// Cure cures the [Artifact], producing a directory located at work.
-func (a archiveArtifact) Cure(t *TContext) (err error) {
-	var r io.ReadCloser
-	if r, err = t.Open(a.f); err != nil {
-		return
-	}
-
-	defer func() {
-		closeErr := r.Close()
-		if err == nil {
-			err = closeErr
-		}
-	}()
-
-	type dirTargetPerm struct {
-		path string
-		mode fs.FileMode
-	}
-	var madeDirectories []dirTargetPerm
-
-	if err = os.MkdirAll(t.GetWorkDir().String(), 0700); err != nil {
-		return
-	}
-	var root *os.Root
-	if root, err = os.OpenRoot(t.GetWorkDir().String()); err != nil {
-		return
-	}
-	defer func() {
-		closeErr := root.Close()
-		if err == nil {
-			err = closeErr
-		}
-	}()
-
-	var header *ArchiveHeader
-	ar := NewReader(r)
-	for header, err = ar.Next(); err == nil; header, err = ar.Next() {
-		if header.Mode.IsRegular() {
-			var f *os.File
-			if f, err = root.OpenFile(
-				header.Path,
-				os.O_CREATE|os.O_EXCL|os.O_WRONLY,
-				header.Mode.Perm(),
-			); err != nil {
-				return
-			}
-			if _, err = io.Copy(f, ar); err != nil {
-				_ = f.Close()
-				return
-			} else if err = f.Close(); err != nil {
-				return
-			}
-		} else if header.Mode&fs.ModeSymlink != 0 {
-			var p []byte
-			if p, err = io.ReadAll(ar); err != nil {
-				return
-			}
-
-			if err = root.Symlink(
-				unsafe.String(unsafe.SliceData(p), len(p)),
-				header.Path,
-			); err != nil {
-				return
-			}
-		} else if header.Mode.IsDir() {
-			if header.Path == "." {
-				continue
-			}
-
-			madeDirectories = append(madeDirectories, dirTargetPerm{
-				path: header.Path,
-				mode: header.Mode,
-			})
-			if err = root.Mkdir(header.Path, 0700); err != nil {
-				return
-			}
-		} else {
-			return InvalidFileModeError(header.Mode)
-		}
-	}
-	if errors.Is(err, io.EOF) {
-		err = nil
-	}
-	if err == nil {
-		for _, e := range madeDirectories {
-			if err = root.Chmod(e.path, e.mode.Perm()); err != nil {
-				return
-			}
-		}
-	} else {
-		return
-	}
-	return
-}

internal/pkg/archive_test.go

@@ -1,240 +0,0 @@
-package pkg_test
-
-import (
-	"bytes"
-	"io"
-	"io/fs"
-	"maps"
-	"reflect"
-	"testing"
-	"testing/fstest"
-	"unsafe"
-
-	"hakurei.app/check"
-	"hakurei.app/internal/pkg"
-)
-
-func TestArchive(t *testing.T) {
-	t.Parallel()
-
-	type entry struct {
-		path string
-		mode fs.FileMode
-		data string
-	}
-	testCases := []struct {
-		name    string
-		fsys    fs.FS
-		entries []entry
-		sum     pkg.Checksum
-		err     error
-	}{
-		{"bad type", fstest.MapFS{
-			".":       {Mode: fs.ModeDir | 0700},
-			"invalid": {Mode: fs.ModeCharDevice | 0400},
-		}, nil, pkg.Checksum{}, pkg.InvalidFileModeError(
-			fs.ModeCharDevice | 0400,
-		)},
-
-		{"coldboot", fstest.MapFS{
-			".": {Mode: fs.ModeDir | 0700},
-
-			"devices":        {Mode: fs.ModeDir | 0700},
-			"devices/uevent": {Mode: 0600, Data: []byte("add")},
-			"devices/empty":  {Mode: fs.ModeDir | 0700},
-
-			"devices/sub":        {Mode: fs.ModeDir | 0700},
-			"devices/sub/uevent": {Mode: 0600, Data: []byte("add")},
-
-			"block":        {Mode: fs.ModeDir | 0700},
-			"block/uevent": {Mode: 0600},
-		}, []entry{
-			{".", fs.ModeDir | 0700, ""},
-
-			{"block", fs.ModeDir | 0700, ""},
-			{"block/uevent", 0600, ""},
-
-			{"devices", fs.ModeDir | 0700, ""},
-			{"devices/empty", fs.ModeDir | 0700, ""},
-			{"devices/sub", fs.ModeDir | 0700, ""},
-			{"devices/sub/uevent", 0600, "add"},
-			{"devices/uevent", 0600, "add"},
-		}, pkg.MustDecode("mEy_Lf5KotThm7OwMx7yTKZh5HCCyaB41pVAvI9uDMgVQFM91iosBLYsRm8bDsX8"), nil},
-
-		{"empty", fstest.MapFS{
-			".":          {Mode: fs.ModeDir | 0700},
-			"checksum":   {Mode: fs.ModeDir | 0700},
-			"identifier": {Mode: fs.ModeDir | 0700},
-			"work":       {Mode: fs.ModeDir | 0700},
-		}, []entry{
-			{".", fs.ModeDir | 0700, ""},
-			{"checksum", fs.ModeDir | 0700, ""},
-			{"identifier", fs.ModeDir | 0700, ""},
-			{"work", fs.ModeDir | 0700, ""},
-		}, pkg.MustDecode("E4vEZKhCcL2gPZ2Tt59FS3lDng-d_2SKa2i5G_RbDfwGn6EemptFaGLPUDiOa94C"), nil},
-
-		{"sample directory step garbage", fstest.MapFS{
-			".": {Mode: fs.ModeDir | 0500},
-
-			"lib":       {Mode: fs.ModeDir | 0500},
-			"lib/check": {Mode: 0400},
-
-			"lib/pkgconfig": {Mode: fs.ModeDir | 0500},
-		}, []entry{
-			{".", fs.ModeDir | 0500, ""},
-
-			{"lib", fs.ModeDir | 0500, ""},
-			{"lib/check", 0400, ""},
-
-			{"lib/pkgconfig", fs.ModeDir | 0500, ""},
-		}, pkg.MustDecode("CUx-3hSbTWPsbMfDhgalG4Ni_GmR9TnVX8F99tY_P5GtkYvczg9RrF5zO0jX9XYT"), nil},
-	}
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			t.Parallel()
-
-			t.Run("roundtrip", func(t *testing.T) {
-				t.Parallel()
-
-				var buf bytes.Buffer
-				if err := pkg.Write(
-					tc.fsys,
-					".",
-					&buf,
-				); !reflect.DeepEqual(err, tc.err) {
-					t.Fatalf("Flatten: error = %v, want %v", err, tc.err)
-				} else if tc.err != nil {
-					return
-				}
-
-				r := pkg.NewReader(bytes.NewReader(buf.Bytes()))
-				var got []entry
-				for {
-					h, err := r.Next()
-					if err != nil {
-						if err == io.EOF {
-							break
-						}
-						t.Fatalf("Next: error = %v", err)
-					}
-
-					var data []byte
-					if data, err = io.ReadAll(r); err != nil {
-						t.Fatalf("Read: error = %v", err)
-					}
-
-					got = append(got, entry{
-						path: h.Path,
-						mode: h.Mode,
-						data: unsafe.String(unsafe.SliceData(data), len(data)),
-					})
-				}
-
-				if !reflect.DeepEqual(got, tc.entries) {
-					t.Fatalf("Reader: %#v, want %#v", got, tc.entries)
-				}
-			})
-
-			if tc.err != nil {
-				return
-			}
-
-			t.Run("hash", func(t *testing.T) {
-				t.Parallel()
-
-				var got pkg.Checksum
-				if err := pkg.SumFS(&got, tc.fsys, "."); err != nil {
-					t.Fatalf("SumFS: error = %v", err)
-				} else if got != tc.sum {
-					t.Fatalf("SumFS: %v", &pkg.ChecksumMismatchError{
-						Got:  got,
-						Want: tc.sum,
-					})
-				}
-			})
-		})
-	}
-}
-
-var archiveTestdata = fstest.MapFS{
-	".": {Mode: fs.ModeDir | 0700},
-
-	"devices":        {Mode: fs.ModeDir | 0700},
-	"devices/uevent": {Mode: 0600, Data: []byte("add")},
-	"devices/empty":  {Mode: fs.ModeDir | 0700},
-
-	"devices/sub":        {Mode: fs.ModeDir | 0700},
-	"devices/sub/uevent": {Mode: 0600, Data: []byte("add")},
-
-	"block":        {Mode: fs.ModeDir | 0700},
-	"block/uevent": {Mode: 0600},
-}
-
-func TestArchiveArtifact(t *testing.T) {
-	t.Parallel()
-
-	want := maps.Clone(archiveTestdata)
-	want["."].Mode = fs.ModeDir | 0500
-
-	checkWithCache(t, []cacheTestCase{
-		{"unpack", 0, nil, func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
-			var buf bytes.Buffer
-			if err := pkg.Write(archiveTestdata, ".", &buf); err != nil {
-				t.Fatal(err)
-			}
-
-			cureMany(t, c, []cureStep{
-				{"sample", pkg.NewArchive(
-					pkg.NewFile("", buf.Bytes()),
-				), ignorePathname, expectsFS(want), nil},
-			})
-		}, expectsFS{
-			".": {Mode: fs.ModeDir | 0700},
-
-			"checksum": {Mode: fs.ModeDir | 0700},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F":                    {Mode: fs.ModeDir | 0500},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/block":              {Mode: fs.ModeDir | 0700},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/block/uevent":       {Mode: 0600},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/devices":            {Mode: fs.ModeDir | 0700},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/devices/empty":      {Mode: fs.ModeDir | 0700},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/devices/sub":        {Mode: fs.ModeDir | 0700},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/devices/sub/uevent": {Mode: 0600, Data: []byte("add")},
-			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/devices/uevent":     {Mode: 0600, Data: []byte("add")},
-
-			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/3oYyAbRJ_we7AgWo1BRcRcnxXFk3mAQ0Qui2nGQMi8GIJNJQtvUC6P2IeoA5mbjD": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F")},
-
-			"substitute": {Mode: fs.ModeDir | 0700},
-			"work":       {Mode: fs.ModeDir | 0700},
-		}},
-	})
-}
-
-func BenchmarkArchiveRead(b *testing.B) {
-	var buf bytes.Buffer
-	if err := pkg.Write(archiveTestdata, ".", &buf); err != nil {
-		b.Fatal(err)
-	}
-	testdata := buf.Bytes()
-
-	for b.Loop() {
-		r := pkg.NewReader(bytes.NewReader(testdata))
-		for {
-			_, err := r.Next()
-			if err != nil {
-				if err == io.EOF {
-					break
-				}
-				b.Fatal(err)
-			}
-		}
-	}
-}
-
-func BenchmarkArchiveWrite(b *testing.B) {
-	for b.Loop() {
-		if err := pkg.Write(archiveTestdata, ".", io.Discard); err != nil {
-			b.Fatal(err)
-		}
-	}
-}

internal/pkg/asm.go

@@ -0,0 +1,216 @@
+package pkg
+
+import (
+	"encoding/binary"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+)
+
+type asmOutLine struct {
+	pos       int
+	word      int
+	kindData  int64
+	valueData []byte
+	indent    int
+	kind      string
+	value     string
+}
+
+var spacingLine = asmOutLine{
+	pos:       -1,
+	kindData:  -1,
+	valueData: nil,
+	indent:    0,
+	kind:      "",
+	value:     "",
+}
+
+func Disassemble(r io.Reader, real bool, showHeader bool, force bool, raw bool) (s string, err error) {
+	var lines []asmOutLine
+	sb := new(strings.Builder)
+	header := true
+	pos := new(int)
+
+	for err == nil {
+		if header {
+			var kind uint64
+			var size uint64
+			var bsize []byte
+			p := *pos
+			if _, kind, err = nextUint64(r, pos); err != nil {
+				break
+			}
+			if bsize, size, err = nextUint64(r, pos); err != nil {
+				break
+			}
+			if showHeader {
+				lines = append(lines, asmOutLine{p, 8, int64(kind), bsize, 0, "head  " + intToKind(kind), ""})
+			}
+			for i := 0; uint64(i) < size; i++ {
+				var did Checksum
+				var dkind uint64
+				p := *pos
+				if _, dkind, err = nextUint64(r, pos); err != nil {
+					break
+				}
+				if _, did, err = nextIdent(r, pos); err != nil {
+					break
+				}
+				if showHeader {
+					lines = append(lines, asmOutLine{p, 8, int64(dkind), nil, 1, intToKind(dkind), Encode(did)})
+				}
+			}
+			header = false
+		}
+		var k uint32
+		p := *pos
+		if _, k, err = nextUint32(r, pos); err != nil {
+			break
+		}
+		kind := IRValueKind(k)
+		switch kind {
+		case IRKindEnd:
+			var a uint32
+			var ba []byte
+			if ba, a, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			if a&1 != 0 {
+				var sum Checksum
+				if _, sum, err = nextIdent(r, pos); err != nil {
+					break
+				}
+				lines = append(lines, asmOutLine{p, 4, int64(kind), ba, 1, "end ", Encode(sum)})
+			} else {
+				lines = append(lines, asmOutLine{p, 4, int64(kind), []byte{0, 0, 0, 0}, 1, "end ", ""})
+			}
+			lines = append(lines, spacingLine)
+			header = true
+			continue
+
+		case IRKindIdent:
+			var a []byte
+			// discard ancillary
+			if a, _, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			var sum Checksum
+			if _, sum, err = nextIdent(r, pos); err != nil {
+				break
+			}
+
+			lines = append(lines, asmOutLine{p, 4, int64(kind), a, 1, "id  ", Encode(sum)})
+			continue
+		case IRKindUint32:
+			var i uint32
+			var bi []byte
+			if bi, i, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			lines = append(lines, asmOutLine{p, 4, int64(kind), bi, 1, "int ", strconv.FormatUint(uint64(i), 10)})
+		case IRKindString:
+			var l uint32
+			var bl []byte
+			if bl, l, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			s := make([]byte, l+(wordSize-(l)%wordSize)%wordSize)
+			var n int
+			if n, err = r.Read(s); err != nil {
+				break
+			}
+			*pos = *pos + n
+
+			lines = append(lines, asmOutLine{p, 4, int64(kind), bl, 1, "str ", strconv.Quote(string(s[:l]))})
+			continue
+		default:
+			var bi []byte
+			if bi, _, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			lines = append(lines, asmOutLine{p, 4, int64(kind), bi, 1, "????", ""})
+		}
+	}
+	if err != io.EOF {
+		return
+	}
+	err = nil
+	for _, line := range lines {
+		if raw {
+			if line.pos != -1 {
+				sb.WriteString(fmt.Sprintf("%s\t%s\n", line.kind, line.value))
+			}
+		} else {
+			if line.pos == -1 {
+				sb.WriteString("\n")
+			} else if line.word == 4 {
+				sb.WriteString(fmt.Sprintf("%06x:  %04x %04x%s          %s  %s\n", line.pos, binary.LittleEndian.AppendUint32(nil, uint32(line.kindData)), line.valueData, headerSpacing(showHeader), line.kind, line.value))
+			} else {
+				kind := binary.LittleEndian.AppendUint64(nil, uint64(line.kindData))
+				value := line.valueData
+				if len(value) == 8 {
+					sb.WriteString(fmt.Sprintf("%06x:  %04x %04x %04x %04x      %s  %s\n", line.pos, kind[:4], kind[4:], value[:4], value[4:], line.kind, line.value))
+				} else {
+					sb.WriteString(fmt.Sprintf("%06x:  %04x %04x                        %s  %s\n", line.pos, kind[:4], kind[4:], line.kind, line.value))
+				}
+
+			}
+		}
+
+	}
+	return sb.String(), err
+}
+func nextUint32(r io.Reader, pos *int) ([]byte, uint32, error) {
+	i := make([]byte, 4)
+	_, err := r.Read(i)
+	if err != nil {
+		return i, 0, err
+	}
+	p := *pos + 4
+	*pos = p
+	return i, binary.LittleEndian.Uint32(i), nil
+}
+func nextUint64(r io.Reader, pos *int) ([]byte, uint64, error) {
+	i := make([]byte, 8)
+	_, err := r.Read(i)
+	if err != nil {
+		return i, 0, err
+	}
+	p := *pos + 8
+	*pos = p
+	return i, binary.LittleEndian.Uint64(i), nil
+}
+func nextIdent(r io.Reader, pos *int) ([]byte, Checksum, error) {
+	i := make([]byte, 48)
+	if _, err := r.Read(i); err != nil {
+		return i, Checksum{}, err
+	}
+	p := *pos + 48
+	*pos = p
+	return i, Checksum(i), nil
+}
+func intToKind(i uint64) string {
+	switch Kind(i) {
+	case KindHTTPGet:
+		return "http"
+	case KindTar:
+		return "tar "
+	case KindExec:
+		return "exec"
+	case KindExecNet:
+		return "exen"
+	case KindFile:
+		return "file"
+	default:
+		return fmt.Sprintf("$%d  ", i-KindCustomOffset)
+	}
+}
+func headerSpacing(showHeader bool) string {
+	if showHeader {
+		return "              "
+	}
+
+	return ""
+}

internal/pkg/clean.go

@@ -1,152 +0,0 @@
-package pkg
-
-import (
-	"errors"
-	"os"
-	"unique"
-)
-
-// Clean destroys checksum backing entries without any identifier or substitute
-// entry referring to it. If at least one keep [Artifact] is specified,
-// identifier and substitute entries not kept alive by them are destroyed first.
-func (c *Cache) Clean(dry, inputs bool, keep ...Artifact) (
-	[]unique.Handle[ID],
-	[]unique.Handle[Checksum],
-	error,
-) {
-	c.identMu.Lock()
-	defer c.identMu.Unlock()
-
-	c.checksumMu.Lock()
-	defer c.checksumMu.Unlock()
-
-	dents, err := os.ReadDir(c.base.Append(dirChecksum).String())
-	if err != nil {
-		return nil, nil, err
-	}
-	checksums := make(map[unique.Handle[Checksum]]string, len(dents))
-	var buf Checksum
-	for _, dent := range dents {
-		name := dent.Name()
-		if err = Decode(&buf, name); err != nil {
-			return nil, nil, err
-		}
-		checksums[unique.Make(buf)] = name
-	}
-
-	type identPair struct {
-		id   unique.Handle[ID]
-		name string
-	}
-	dents, err = os.ReadDir(c.base.Append(dirIdentifier).String())
-	if err != nil {
-		return nil, nil, err
-	}
-
-	keepIdents := make(map[unique.Handle[ID]]struct{})
-	if inputs {
-		for _, id := range Inputs((*Collect)(&keep)) {
-			keepIdents[id] = struct{}{}
-		}
-	} else {
-		for _, a := range keep {
-			keepIdents[c.Ident(a)] = struct{}{}
-		}
-	}
-
-	idents := make([]identPair, 0, len(dents))
-	for _, dent := range dents {
-		name := dent.Name()
-		if err = Decode(&buf, name); err != nil {
-			return nil, nil, err
-		}
-		id := unique.Make(ID(buf))
-
-		if _, ok := keepIdents[id]; len(keep) == 0 || ok {
-			if err = readlinkChecksum(c.base.Append(
-				dirIdentifier,
-				name,
-			), &buf); err != nil {
-				return nil, nil, err
-			}
-			delete(checksums, unique.Make(buf))
-			continue
-		}
-
-		c.msg.Verbosef("arranging for destruction of %s...", name)
-		idents = append(idents, identPair{id, name})
-	}
-
-	destroyedIdents := make([]unique.Handle[ID], 0, len(idents))
-	for _, pair := range idents {
-		if !dry {
-			if err = os.Remove(c.base.Append(
-				dirStatus,
-				pair.name,
-			).String()); err != nil && !errors.Is(err, os.ErrNotExist) {
-				return destroyedIdents, nil, err
-			}
-
-			if err = os.Remove(c.base.Append(
-				dirIdentifier,
-				pair.name,
-			).String()); err != nil {
-				return destroyedIdents, nil, err
-			}
-		}
-		destroyedIdents = append(destroyedIdents, pair.id)
-	}
-
-	destroyedChecksums := make([]unique.Handle[Checksum], 0, len(checksums))
-	for checksum, name := range checksums {
-		if err = c.parent.Err(); err != nil {
-			return destroyedIdents, destroyedChecksums, err
-		}
-		c.msg.Verbosef("destroying checksum %s...", name)
-		if !dry {
-			if err = errors.Join(removeAll(c.base.Append(
-				dirChecksum,
-				name,
-			))); err != nil {
-				return destroyedIdents, destroyedChecksums, err
-			}
-		}
-		destroyedChecksums = append(destroyedChecksums, checksum)
-	}
-
-	dents, err = os.ReadDir(c.base.Append(dirSubstitute).String())
-	if err != nil {
-		return destroyedIdents, destroyedChecksums, err
-	}
-	for _, dent := range dents {
-		name := dent.Name()
-		if err = readlinkChecksum(c.base.Append(
-			dirSubstitute,
-			name,
-		), &buf); err != nil {
-			return destroyedIdents, destroyedChecksums, err
-		}
-		if _, ok := checksums[unique.Make(buf)]; !ok {
-			continue
-		}
-
-		c.msg.Verbosef("destroying substitute %s...", name)
-		if !dry {
-			if err = os.Remove(c.base.Append(
-				dirStatus,
-				name,
-			).String()); err != nil && !errors.Is(err, os.ErrNotExist) {
-				return destroyedIdents, nil, err
-			}
-
-			if err = os.Remove(c.base.Append(
-				dirSubstitute,
-				name,
-			).String()); err != nil {
-				return destroyedIdents, destroyedChecksums, err
-			}
-		}
-	}
-
-	return destroyedIdents, destroyedChecksums, nil
-}