From 65fb2a7f0304fda4463771ae40f8b83728e74a62 Mon Sep 17 00:00:00 2001
From: Josh Gao <jmgao@google.com>
Date: Thu, 7 May 2020 19:40:14 -0700
Subject: fdsan: don't do anything when vforked.

Bug: http://b/153926671
Test: 32/64-bit bionic-unit-tests on blueline, x86_64 emulator
Change-Id: Id351a993e396774b68239edfef83d9e81205290b
---
 tests/fdsan_test.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'tests/fdsan_test.cpp')

diff --git a/tests/fdsan_test.cpp b/tests/fdsan_test.cpp
index fb3f73dc3..134d62117 100644
--- a/tests/fdsan_test.cpp
+++ b/tests/fdsan_test.cpp
@@ -23,6 +23,7 @@
 #include <fcntl.h>
 #include <stdlib.h>
 #include <sys/types.h>
+#include <unistd.h>
 
 #if defined(__BIONIC__)
 #include <android/fdsan.h>
@@ -192,3 +193,21 @@ TEST_F(FdsanTest, unique_fd_unowned_close_after_move) {
   EXPECT_FDSAN_DEATH(close(fd_moved.get()), "expected to be unowned, actually owned by unique_fd");
 #endif
 }
+
+TEST_F(FdsanTest, vfork) {
+  android::base::unique_fd fd(open("/dev/null", O_RDONLY));
+
+  pid_t rc = vfork();
+  ASSERT_NE(-1, rc);
+
+  if (rc == 0) {
+    close(fd.get());
+    _exit(0);
+  }
+
+  int status;
+  pid_t wait_result = waitpid(rc, &status, 0);
+  ASSERT_EQ(wait_result, rc);
+  ASSERT_TRUE(WIFEXITED(status));
+  ASSERT_EQ(0, WEXITSTATUS(status));
+}
-- 
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