1 files changed, 87 insertions, 0 deletions
diff --git a/tests/sys_resource_test.cpp b/tests/sys_resource_test.cpp
new file mode 100644
index 000000000..bd974cb94
--- /dev/null
+++ b/tests/sys_resource_test.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <sys/resource.h>
+
+#if __GLIBC__
+/* The host glibc we're currently building with doesn't have prlimit64 yet. */
+static int prlimit64(pid_t, int resource, const struct rlimit64* new_limit, struct rlimit64* old_limit) {
+  if (new_limit != NULL) {
+    return setrlimit64(resource, new_limit);
+  } else {
+    return getrlimit64(resource, old_limit);
+  }
+}
+#endif
+
+TEST(sys_resource, smoke) {
+#if __LP64__ || __GLIBC__
+  ASSERT_EQ(sizeof(rlimit), sizeof(rlimit64));
+  ASSERT_EQ(8U, sizeof(rlim_t));
+#else
+  ASSERT_NE(sizeof(rlimit), sizeof(rlimit64));
+  ASSERT_EQ(4U, sizeof(rlim_t));
+#endif
+
+  // Read with getrlimit, getrlimit64, and prlimit64.
+  // (prlimit is prlimit64 on LP64 and unimplemented on 32-bit.)
+  rlimit l32;
+  rlimit64 l64;
+  rlimit64 pr_l64;
+  ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32));
+  ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64));
+  ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, NULL, &pr_l64));
+  ASSERT_EQ(l64.rlim_cur, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, pr_l64.rlim_cur);
+  ASSERT_EQ(l64.rlim_max, pr_l64.rlim_max);
+  if (l64.rlim_max == RLIM64_INFINITY) {
+    ASSERT_EQ(RLIM_INFINITY, l32.rlim_max);
+  } else {
+    ASSERT_EQ(l64.rlim_max, l32.rlim_max);
+  }
+
+  // Write with setrlimit and read back with everything.
+  l32.rlim_cur = 123;
+  ASSERT_EQ(0, setrlimit(RLIMIT_CORE, &l32));
+  ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32));
+  ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64));
+  ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, NULL, &pr_l64));
+  ASSERT_EQ(123U, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, pr_l64.rlim_cur);
+
+  // Write with setrlimit64 and read back with everything.
+  l64.rlim_cur = 456;
+  ASSERT_EQ(0, setrlimit64(RLIMIT_CORE, &l64));
+  ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32));
+  ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64));
+  ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, NULL, &pr_l64));
+  ASSERT_EQ(456U, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, pr_l64.rlim_cur);
+
+  // Write with prlimit64 and read back with everything.
+  l64.rlim_cur = 789;
+  ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, &l64, NULL));
+  ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32));
+  ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64));
+  ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, NULL, &pr_l64));
+  ASSERT_EQ(789U, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, l32.rlim_cur);
+  ASSERT_EQ(l64.rlim_cur, pr_l64.rlim_cur);
+}