diff --git a/cmd/hakurei/main.go b/cmd/hakurei/main.go
index 169ac6c0..b7722bc3 100644
--- a/cmd/hakurei/main.go
+++ b/cmd/hakurei/main.go
@@ -13,6 +13,7 @@ import (
 	"syscall"
 
 	"hakurei.app/container"
+	"hakurei.app/ext"
 	"hakurei.app/message"
 )
 
@@ -35,8 +36,8 @@ func main() {
 	msg := message.New(log.Default())
 
 	early := earlyHardeningErrs{
-		yamaLSM:  container.SetPtracer(0),
-		dumpable: container.SetDumpable(container.SUID_DUMP_DISABLE),
+		yamaLSM:  ext.SetPtracer(0),
+		dumpable: ext.SetDumpable(ext.SUID_DUMP_DISABLE),
 	}
 
 	if os.Geteuid() == 0 {
diff --git a/cmd/mbf/main.go b/cmd/mbf/main.go
index 3dc1f06e..484423da 100644
--- a/cmd/mbf/main.go
+++ b/cmd/mbf/main.go
@@ -24,6 +24,7 @@ import (
 	"hakurei.app/container/fhs"
 	"hakurei.app/container/seccomp"
 	"hakurei.app/container/std"
+	"hakurei.app/ext"
 	"hakurei.app/internal/pkg"
 	"hakurei.app/internal/rosa"
 	"hakurei.app/message"
@@ -271,7 +272,7 @@ func main() {
 				return errors.New("report requires 1 argument")
 			}
 
-			if container.Isatty(int(w.Fd())) {
+			if ext.Isatty(int(w.Fd())) {
 				return errors.New("output appears to be a terminal")
 			}
 			return rosa.WriteReport(msg, w, cache)
diff --git a/container/capability.go b/container/capability.go
index 3ea9d028..1d98ec4b 100644
--- a/container/capability.go
+++ b/container/capability.go
@@ -3,6 +3,8 @@ package container
 import (
 	"syscall"
 	"unsafe"
+
+	"hakurei.app/ext"
 )
 
 const (
@@ -51,15 +53,15 @@ func capset(hdrp *capHeader, datap *[2]capData) error {
 
 // capBoundingSetDrop drops a capability from the calling thread's capability bounding set.
 func capBoundingSetDrop(cap uintptr) error {
-	return Prctl(syscall.PR_CAPBSET_DROP, cap, 0)
+	return ext.Prctl(syscall.PR_CAPBSET_DROP, cap, 0)
 }
 
 // capAmbientClearAll clears the ambient capability set of the calling thread.
 func capAmbientClearAll() error {
-	return Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0)
+	return ext.Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0)
 }
 
 // capAmbientRaise adds to the ambient capability set of the calling thread.
 func capAmbientRaise(cap uintptr) error {
-	return Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, cap)
+	return ext.Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, cap)
 }
diff --git a/container/dispatcher.go b/container/dispatcher.go
index 710e4392..dce5f023 100644
--- a/container/dispatcher.go
+++ b/container/dispatcher.go
@@ -13,6 +13,7 @@ import (
 
 	"hakurei.app/container/seccomp"
 	"hakurei.app/container/std"
+	"hakurei.app/ext"
 	"hakurei.app/internal/netlink"
 	"hakurei.app/message"
 )
@@ -143,8 +144,8 @@ func (k direct) new(f func(k syscallDispatcher)) { go f(k) }
 
 func (direct) lockOSThread() { runtime.LockOSThread() }
 
-func (direct) setPtracer(pid uintptr) error       { return SetPtracer(pid) }
-func (direct) setDumpable(dumpable uintptr) error { return SetDumpable(dumpable) }
+func (direct) setPtracer(pid uintptr) error       { return ext.SetPtracer(pid) }
+func (direct) setDumpable(dumpable uintptr) error { return ext.SetDumpable(dumpable) }
 func (direct) setNoNewPrivs() error               { return SetNoNewPrivs() }
 
 func (direct) lastcap(msg message.Msg) uintptr                 { return LastCap(msg) }
@@ -152,7 +153,7 @@ func (direct) capset(hdrp *capHeader, datap *[2]capData) error { return capset(h
 func (direct) capBoundingSetDrop(cap uintptr) error            { return capBoundingSetDrop(cap) }
 func (direct) capAmbientClearAll() error                       { return capAmbientClearAll() }
 func (direct) capAmbientRaise(cap uintptr) error               { return capAmbientRaise(cap) }
-func (direct) isatty(fd int) bool                              { return Isatty(fd) }
+func (direct) isatty(fd int) bool                              { return ext.Isatty(fd) }
 func (direct) receive(key string, e any, fdp *uintptr) (func() error, error) {
 	return Receive(key, e, fdp)
 }
diff --git a/container/init.go b/container/init.go
index 8fbf757e..3e2ec809 100644
--- a/container/init.go
+++ b/container/init.go
@@ -17,6 +17,7 @@ import (
 
 	"hakurei.app/container/fhs"
 	"hakurei.app/container/seccomp"
+	"hakurei.app/ext"
 	"hakurei.app/message"
 )
 
@@ -178,7 +179,7 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 	}
 
 	// write uid/gid map here so parent does not need to set dumpable
-	if err := k.setDumpable(SUID_DUMP_USER); err != nil {
+	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",
@@ -196,7 +197,7 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 		0); err != nil {
 		k.fatalf(msg, "%v", err)
 	}
-	if err := k.setDumpable(SUID_DUMP_DISABLE); err != nil {
+	if err := k.setDumpable(ext.SUID_DUMP_DISABLE); err != nil {
 		k.fatalf(msg, "cannot set SUID_DUMP_DISABLE: %v", err)
 	}
 
@@ -290,7 +291,7 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 
 	{
 		var fd int
-		if err := IgnoringEINTR(func() (err error) {
+		if err := ext.IgnoringEINTR(func() (err error) {
 			fd, err = k.open(fhs.Root, O_DIRECTORY|O_RDONLY, 0)
 			return
 		}); err != nil {
diff --git a/container/mount.go b/container/mount.go
index 171b210b..f6a8844f 100644
--- a/container/mount.go
+++ b/container/mount.go
@@ -6,6 +6,7 @@ import (
 	"os"
 	. "syscall"
 
+	"hakurei.app/ext"
 	"hakurei.app/message"
 	"hakurei.app/vfs"
 )
@@ -115,7 +116,7 @@ func (p *procPaths) remount(msg message.Msg, target string, flags uintptr) error
 	var targetKFinal string
 	{
 		var destFd int
-		if err := IgnoringEINTR(func() (err error) {
+		if err := ext.IgnoringEINTR(func() (err error) {
 			destFd, err = p.k.open(targetFinal, O_PATH|O_CLOEXEC, 0)
 			return
 		}); err != nil {
diff --git a/container/syscall.go b/container/syscall.go
index f5c634b0..c71e298c 100644
--- a/container/syscall.go
+++ b/container/syscall.go
@@ -7,40 +7,9 @@ import (
 	"hakurei.app/ext"
 )
 
-// Prctl manipulates various aspects of the behavior of the calling thread or process.
-func Prctl(op, arg2, arg3 uintptr) error {
-	r, _, errno := Syscall(SYS_PRCTL, op, arg2, arg3)
-	if r < 0 {
-		return errno
-	}
-	return nil
-}
-
-// SetPtracer allows processes to ptrace(2) the calling process.
-func SetPtracer(pid uintptr) error { return Prctl(PR_SET_PTRACER, pid, 0) }
-
-// linux/sched/coredump.h
-const (
-	SUID_DUMP_DISABLE = iota
-	SUID_DUMP_USER
-)
-
-// SetDumpable sets the "dumpable" attribute of the calling process.
-func SetDumpable(dumpable uintptr) error { return Prctl(PR_SET_DUMPABLE, dumpable, 0) }
-
 // SetNoNewPrivs sets the calling thread's no_new_privs attribute.
-func SetNoNewPrivs() error { return Prctl(PR_SET_NO_NEW_PRIVS, 1, 0) }
-
-// Isatty tests whether a file descriptor refers to a terminal.
-func Isatty(fd int) bool {
-	var buf [8]byte
-	r, _, _ := Syscall(
-		SYS_IOCTL,
-		uintptr(fd),
-		TIOCGWINSZ,
-		uintptr(unsafe.Pointer(&buf[0])),
-	)
-	return r == 0
+func SetNoNewPrivs() error {
+	return ext.Prctl(PR_SET_NO_NEW_PRIVS, 1, 0)
 }
 
 // schedParam is equivalent to struct sched_param from include/linux/sched.h.
@@ -73,19 +42,3 @@ func schedSetscheduler(tid int, policy ext.SchedPolicy, param *schedParam) error
 	}
 	return nil
 }
-
-// IgnoringEINTR makes a function call and repeats it if it returns an
-// EINTR error. This appears to be required even though we install all
-// signal handlers with SA_RESTART: see #22838, #38033, #38836, #40846.
-// Also #20400 and #36644 are issues in which a signal handler is
-// installed without setting SA_RESTART. None of these are the common case,
-// but there are enough of them that it seems that we can't avoid
-// an EINTR loop.
-func IgnoringEINTR(fn func() error) error {
-	for {
-		err := fn()
-		if err != EINTR {
-			return err
-		}
-	}
-}
diff --git a/ext/syscall.go b/ext/syscall.go
index cee35cc5..30901d2d 100644
--- a/ext/syscall.go
+++ b/ext/syscall.go
@@ -5,8 +5,62 @@ import (
 	"strconv"
 	"sync"
 	"syscall"
+	"unsafe"
 )
 
+// Prctl manipulates various aspects of the behavior of the calling thread or process.
+func Prctl(op, arg2, arg3 uintptr) error {
+	r, _, errno := syscall.Syscall(syscall.SYS_PRCTL, op, arg2, arg3)
+	if r < 0 {
+		return errno
+	}
+	return nil
+}
+
+// SetPtracer allows processes to ptrace(2) the calling process.
+func SetPtracer(pid uintptr) error {
+	return Prctl(syscall.PR_SET_PTRACER, pid, 0)
+}
+
+// linux/sched/coredump.h
+const (
+	SUID_DUMP_DISABLE = iota
+	SUID_DUMP_USER
+)
+
+// SetDumpable sets the "dumpable" attribute of the calling process.
+func SetDumpable(dumpable uintptr) error {
+	return Prctl(syscall.PR_SET_DUMPABLE, dumpable, 0)
+}
+
+// Isatty tests whether a file descriptor refers to a terminal.
+func Isatty(fd int) bool {
+	var buf [8]byte
+	r, _, _ := syscall.Syscall(
+		syscall.SYS_IOCTL,
+		uintptr(fd),
+		syscall.TIOCGWINSZ,
+		uintptr(unsafe.Pointer(&buf[0])),
+	)
+	return r == 0
+}
+
+// IgnoringEINTR makes a function call and repeats it if it returns an
+// EINTR error. This appears to be required even though we install all
+// signal handlers with SA_RESTART: see #22838, #38033, #38836, #40846.
+// Also #20400 and #36644 are issues in which a signal handler is
+// installed without setting SA_RESTART. None of these are the common case,
+// but there are enough of them that it seems that we can't avoid
+// an EINTR loop.
+func IgnoringEINTR(fn func() error) error {
+	for {
+		err := fn()
+		if err != syscall.EINTR {
+			return err
+		}
+	}
+}
+
 // include/uapi/linux/close_range.h
 const (
 	CLOSE_RANGE_UNSHARE = 1 << (iota + 1)
diff --git a/internal/outcome/dispatcher.go b/internal/outcome/dispatcher.go
index e9f75237..a3d3dbbc 100644
--- a/internal/outcome/dispatcher.go
+++ b/internal/outcome/dispatcher.go
@@ -14,6 +14,7 @@ import (
 	"hakurei.app/container"
 	"hakurei.app/container/seccomp"
 	"hakurei.app/container/std"
+	"hakurei.app/ext"
 	"hakurei.app/internal/dbus"
 	"hakurei.app/internal/info"
 	"hakurei.app/message"
@@ -149,10 +150,10 @@ func (direct) notifyContext(parent context.Context, signals ...os.Signal) (ctx c
 	return signal.NotifyContext(parent, signals...)
 }
 
-func (direct) prctl(op, arg2, arg3 uintptr) error { return container.Prctl(op, arg2, arg3) }
+func (direct) prctl(op, arg2, arg3 uintptr) error { return ext.Prctl(op, arg2, arg3) }
 func (direct) overflowUid(msg message.Msg) int    { return container.OverflowUid(msg) }
 func (direct) overflowGid(msg message.Msg) int    { return container.OverflowGid(msg) }
-func (direct) setDumpable(dumpable uintptr) error { return container.SetDumpable(dumpable) }
+func (direct) setDumpable(dumpable uintptr) error { return ext.SetDumpable(dumpable) }
 func (direct) receive(key string, e any, fdp *uintptr) (func() error, error) {
 	return container.Receive(key, e, fdp)
 }
diff --git a/internal/outcome/shim.go b/internal/outcome/shim.go
index 3f5a86dc..43be1282 100644
--- a/internal/outcome/shim.go
+++ b/internal/outcome/shim.go
@@ -159,7 +159,7 @@ func shimEntrypoint(k syscallDispatcher) {
 		logger.SetFlags(0)
 	}
 
-	if err := k.setDumpable(container.SUID_DUMP_DISABLE); err != nil {
+	if err := k.setDumpable(ext.SUID_DUMP_DISABLE); err != nil {
 		k.fatalf("cannot set SUID_DUMP_DISABLE: %v", err)
 	}
 
diff --git a/internal/outcome/shim_test.go b/internal/outcome/shim_test.go
index 532a2c77..61d167f5 100644
--- a/internal/outcome/shim_test.go
+++ b/internal/outcome/shim_test.go
@@ -14,6 +14,7 @@ import (
 	"hakurei.app/container/seccomp"
 	"hakurei.app/container/std"
 	"hakurei.app/container/stub"
+	"hakurei.app/ext"
 	"hakurei.app/hst"
 	"hakurei.app/internal/env"
 )
@@ -135,14 +136,14 @@ func TestShimEntrypoint(t *testing.T) {
 		{"dumpable", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, new(log.Logger), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, stub.UniqueError(11)),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, stub.UniqueError(11)),
 			call("fatalf", stub.ExpectArgs{"cannot set SUID_DUMP_DISABLE: %v", []any{stub.UniqueError(11)}}, nil, nil),
 		}}, nil},
 
 		{"receive exit request", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", outcomeState{}, nil}, nil, io.EOF),
@@ -155,7 +156,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"receive fd", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", outcomeState{}, nil}, nil, syscall.EBADF),
@@ -168,7 +169,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"receive env", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", outcomeState{}, nil}, nil, container.ErrReceiveEnv),
@@ -181,7 +182,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"receive strange", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", outcomeState{}, nil}, nil, stub.UniqueError(10)),
@@ -194,7 +195,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"reparent", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", func() outcomeState {
@@ -214,7 +215,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"invalid state", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", func() outcomeState {
@@ -233,7 +234,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"sigaction pipe", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, &os.SyscallError{Syscall: "pipe2", Err: stub.UniqueError(9)}),
 			call("fatal", stub.ExpectArgs{[]any{"pipe2: unique error 9 injected by the test suite"}}, nil, nil),
@@ -242,7 +243,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"sigaction cgo", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, syscall.ENOTRECOVERABLE),
 			call("fatalf", stub.ExpectArgs{"cannot install SIGCONT handler: %v", []any{syscall.ENOTRECOVERABLE}}, nil, nil),
@@ -251,7 +252,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"sigaction strange", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, stub.UniqueError(8)),
 			call("fatalf", stub.ExpectArgs{"cannot set up exit request: %v", []any{stub.UniqueError(8)}}, nil, nil),
@@ -260,7 +261,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"prctl", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -276,7 +277,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"toContainer", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", func() outcomeState {
@@ -297,7 +298,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"bad ops", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", func() outcomeState {
@@ -318,7 +319,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"start", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -342,7 +343,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"start logger signalread", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -366,7 +367,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"serve", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -389,7 +390,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"seccomp", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -413,7 +414,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"exited closesetup earlyrequested", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -440,7 +441,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"exited requested", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -467,7 +468,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"canceled orphaned", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -493,7 +494,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"strangewait invalidmsg", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),
@@ -520,7 +521,7 @@ func TestShimEntrypoint(t *testing.T) {
 		{"success", func(k *kstub) error { shimEntrypoint(k); return nil }, stub.Expect{Calls: []stub.Call{
 			call("getMsg", stub.ExpectArgs{}, nil, nil),
 			call("getLogger", stub.ExpectArgs{}, (*log.Logger)(nil), nil),
-			call("setDumpable", stub.ExpectArgs{uintptr(container.SUID_DUMP_DISABLE)}, nil, nil),
+			call("setDumpable", stub.ExpectArgs{uintptr(ext.SUID_DUMP_DISABLE)}, nil, nil),
 			call("getppid", stub.ExpectArgs{}, 0xbad, nil),
 			call("setupContSignal", stub.ExpectArgs{0xbad}, 0, nil),
 			call("receive", stub.ExpectArgs{"HAKUREI_SHIM", templateState, nil}, nil, nil),