Add mseal(2) wrapper.
Change-Id: I053b2d570cd5750285fc20e9e237e04d59778bf5
diff --git a/tests/sys_mman_test.cpp b/tests/sys_mman_test.cpp
index 40c85f2..54a0b64 100644
--- a/tests/sys_mman_test.cpp
+++ b/tests/sys_mman_test.cpp
@@ -320,3 +320,30 @@
close(fd);
#endif
}
+
+TEST(sys_mseal, mseal) {
+#if defined(__GLIBC__)
+ GTEST_SKIP() << "needs glibc 2.40";
+#else
+ void* map = mmap(nullptr, kPageSize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ ASSERT_NE(MAP_FAILED, map);
+
+#if defined(__LP64__)
+ int rc = mseal(map, kPageSize, 0);
+ if (rc == -1) {
+ ASSERT_ERRNO(ENOSYS);
+ GTEST_SKIP() << "needs kernel with mseal(2)";
+ }
+ ASSERT_EQ(-1, mprotect(map, kPageSize, PROT_READ));
+ ASSERT_ERRNO(EPERM);
+#else
+ // No mseal() for ILP32.
+ errno = 0;
+ ASSERT_EQ(-1, mseal(map, kPageSize, 0));
+ ASSERT_ERRNO(ENOSYS);
+ GTEST_SKIP() << "mseal(2) is LP64-only";
+#endif
+
+ // We can't munmap() our test mapping if mseal() actually succeeded :-)
+#endif
+}