Avoid importing platforms from many source files

PiperOrigin-RevId: 256494243

1 files changed, 15 insertions, 0 deletions

diff --git a/pkg/sentry/platform/ptrace/ptrace.go b/pkg/sentry/platform/ptrace/ptrace.go
index ee7e0640c..6fd30ed25 100644
--- a/pkg/sentry/platform/ptrace/ptrace.go
+++ b/pkg/sentry/platform/ptrace/ptrace.go
@@ -45,6 +45,7 @@
 package ptrace
 
 import (
+	"os"
 	"sync"
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
@@ -236,3 +237,17 @@ func (p *PTrace) NewAddressSpace(_ interface{}) (platform.AddressSpace, <-chan s
 func (*PTrace) NewContext() platform.Context {
 	return &context{}
 }
+
+type constructor struct{}
+
+func (*constructor) New(*os.File) (platform.Platform, error) {
+	return New()
+}
+
+func (*constructor) OpenDevice() (*os.File, error) {
+	return nil, nil
+}
+
+func init() {
+	platform.Register("ptrace", &constructor{})
+}