vm/starnix: run adbd as root

This is the simplest way to push binaries and scripts
to /data on target, now that permissions are implemented.

1 files changed, 14 insertions, 0 deletions

diff --git a/vm/starnix/starnix.go b/vm/starnix/starnix.go
index f5da7faf6..321dad489 100644
--- a/vm/starnix/starnix.go
+++ b/vm/starnix/starnix.go
@@ -142,6 +142,10 @@ func (inst *instance) boot() error {
 		return fmt.Errorf("could not start and connect to the adb server: %w", err)
 	}
 
+	if err := inst.restartAdbAsRoot(); err != nil {
+		return fmt.Errorf("could not restart adb with root access: %w", err)
+	}
+
 	if err := inst.createAdbScript(); err != nil {
 		return fmt.Errorf("could not create adb script: %w", err)
 	}
@@ -243,6 +247,16 @@ func (inst *instance) connectToAdb(timeout time.Duration) error {
 	}
 }
 
+func (inst *instance) restartAdbAsRoot() error {
+	err := inst.runCommand(
+		"adb",
+		"-s",
+		fmt.Sprintf("127.0.0.1:%d", inst.port),
+		"root",
+	)
+	return err
+}
+
 // Script for telling syz-fuzzer how to connect to syz-executor.
 func (inst *instance) createAdbScript() error {
 	adbScript := fmt.Sprintf(