Make dumpstate HAL lazy.

Bug: 78509314
Test: HAL isn't running
Test: adb bugreport HAL runs
Test: HAL isn't running after bugreport finishes
Test: can adb bugreport again
Test: HAL isn't running after 2nd bugreport finishes
Test: manually inspect state using `lshal` and logs
    using `adb logcat | grep android.hardware.dump`
Change-Id: Ib4917807aea9b8359094bc83e972d559546f649b

dumpstate/DumpstateDevice.cpp

@@ -21,6 +21,8 @@
 #include <android-base/properties.h>
 #include <android-base/unique_fd.h>
 #include <cutils/properties.h>
+#include <hidl/HidlBinderSupport.h>
+
 #include <log/log.h>
 #include <string.h>
 
@@ -210,6 +212,11 @@ static void DumpTouch(int fd) {
 
 // Methods from ::android::hardware::dumpstate::V1_0::IDumpstateDevice follow.
 Return<void> DumpstateDevice::dumpstateBoard(const hidl_handle& handle) {
+    // Exit when dump is completed since this is a lazy HAL.
+    addPostCommandTask([]() {
+        exit(0);
+    });
+
     if (handle == nullptr || handle->numFds < 1) {
         ALOGE("no FDs\n");
         return Void();

dumpstate/android.hardware.dumpstate@1.0-service.wahoo.rc

@@ -3,6 +3,8 @@ service vendor.dumpstate-1-0 /vendor/bin/hw/android.hardware.dumpstate@1.0-servi
     user system
     group system
     interface android.hardware.dumpstate@1.0::IDumpstateDevice default
+    oneshot
+    disabled
 
 on boot
     chmod 0444 /sys/kernel/debug/tzdbg/qsee_log