Reland protobuf tombstones.

This reverts the following commits:
    e156ede145a7fc671c705d045d89b49922a758b5.
    eda96eddcbdda9632166232b2363c7b84da0994d.
    5ec54d1e843729cd1e38a2f791f001226a653e95.
    1e45d3f2239333217d3252f78151f4294fda4e80.
    a50f61f8fa903117a6df82d164628de310f16ae9.

Test: treehugger
Test: atest -c CtsSeccompHostTestCases:android.seccomp.cts.SeccompHostJUnit4DeviceTest#testAppZygoteSyscalls
Change-Id: Ic2b1f489ac9f1fec7d7a33c845c29891f4306bbd

1 files changed, 69 insertions, 2 deletions

diff --git a/debuggerd/debuggerd_test.cpp b/debuggerd/debuggerd_test.cpp
index 45e555f44..b9d66063e 100644
--- a/debuggerd/debuggerd_test.cpp
+++ b/debuggerd/debuggerd_test.cpp
@@ -1309,11 +1309,11 @@ TEST(tombstoned, java_trace_intercept_smoke) {
   tombstoned_intercept(self, &intercept_fd, &output_fd, &status, kDebuggerdJavaBacktrace);
   ASSERT_EQ(InterceptStatus::kRegistered, status);
 
-  // First connect to tombstoned requesting a native backtrace. This
+  // First connect to tombstoned requesting a native tombstone. This
   // should result in a "regular" FD and not the installed intercept.
   const char native[] = "native";
   unique_fd tombstoned_socket, input_fd;
-  ASSERT_TRUE(tombstoned_connect(self, &tombstoned_socket, &input_fd, kDebuggerdNativeBacktrace));
+  ASSERT_TRUE(tombstoned_connect(self, &tombstoned_socket, &input_fd, kDebuggerdTombstone));
   ASSERT_TRUE(android::base::WriteFully(input_fd.get(), native, sizeof(native)));
   tombstoned_notify_completion(tombstoned_socket.get());
 
@@ -1425,3 +1425,70 @@ TEST_F(CrasherTest, stack_overflow) {
   ConsumeFd(std::move(output_fd), &result);
   ASSERT_MATCH(result, R"(Cause: stack pointer[^\n]*stack overflow.\n)");
 }
+
+TEST(tombstoned, proto) {
+  const pid_t self = getpid();
+  unique_fd tombstoned_socket, text_fd, proto_fd;
+  ASSERT_TRUE(
+      tombstoned_connect(self, &tombstoned_socket, &text_fd, &proto_fd, kDebuggerdTombstoneProto));
+
+  tombstoned_notify_completion(tombstoned_socket.get());
+
+  ASSERT_NE(-1, text_fd.get());
+  ASSERT_NE(-1, proto_fd.get());
+
+  struct stat text_st;
+  ASSERT_EQ(0, fstat(text_fd.get(), &text_st));
+
+  // Give tombstoned some time to link the files into place.
+  std::this_thread::sleep_for(100ms);
+
+  // Find the tombstone.
+  std::optional<int> tombstone_index;
+  for (int i = 0; i < 50; ++i) {
+    std::string path = android::base::StringPrintf("/data/tombstones/tombstone_%02d", i);
+
+    struct stat st;
+    if (TEMP_FAILURE_RETRY(stat(path.c_str(), &st)) != 0) {
+      continue;
+    }
+
+    if (st.st_dev == text_st.st_dev && st.st_ino == text_st.st_ino) {
+      tombstone_index = i;
+      break;
+    }
+  }
+
+  ASSERT_TRUE(tombstone_index);
+  std::string proto_path =
+      android::base::StringPrintf("/data/tombstones/tombstone_%02d.pb", *tombstone_index);
+
+  struct stat proto_fd_st;
+  struct stat proto_file_st;
+  ASSERT_EQ(0, fstat(proto_fd.get(), &proto_fd_st));
+  ASSERT_EQ(0, stat(proto_path.c_str(), &proto_file_st));
+
+  ASSERT_EQ(proto_fd_st.st_dev, proto_file_st.st_dev);
+  ASSERT_EQ(proto_fd_st.st_ino, proto_file_st.st_ino);
+}
+
+TEST(tombstoned, proto_intercept) {
+  const pid_t self = getpid();
+  unique_fd intercept_fd, output_fd;
+  InterceptStatus status;
+
+  tombstoned_intercept(self, &intercept_fd, &output_fd, &status, kDebuggerdTombstone);
+  ASSERT_EQ(InterceptStatus::kRegistered, status);
+
+  unique_fd tombstoned_socket, text_fd, proto_fd;
+  ASSERT_TRUE(
+      tombstoned_connect(self, &tombstoned_socket, &text_fd, &proto_fd, kDebuggerdTombstoneProto));
+  ASSERT_TRUE(android::base::WriteStringToFd("foo", text_fd.get()));
+  tombstoned_notify_completion(tombstoned_socket.get());
+
+  text_fd.reset();
+
+  std::string output;
+  ASSERT_TRUE(android::base::ReadFdToString(output_fd, &output));
+  ASSERT_EQ("foo", output);
+}