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/*
* 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 <sys/resource.h>
#include <gtest/gtest.h>
TEST(sys_resource, rlimit_struct_size) {
#if defined(__LP64__) || defined(__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
}
class SysResourceTest : public ::testing::Test {
protected:
void SetUp() override {
ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32_));
ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64_));
ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, nullptr, &pr_l32_));
ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, nullptr, &pr_l64_));
}
void CheckResourceLimits();
protected:
rlimit l32_;
rlimit64 l64_;
rlimit pr_l32_;
rlimit64 pr_l64_;
};
void SysResourceTest::CheckResourceLimits() {
ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32_));
ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64_));
ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, nullptr, &pr_l32_));
ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, nullptr, &pr_l64_));
ASSERT_EQ(l32_.rlim_cur, pr_l32_.rlim_cur);
ASSERT_EQ(l64_.rlim_cur, pr_l64_.rlim_cur);
if (l64_.rlim_cur == RLIM64_INFINITY) {
ASSERT_EQ(RLIM_INFINITY, l32_.rlim_cur);
} else {
ASSERT_EQ(l64_.rlim_cur, l32_.rlim_cur);
}
ASSERT_EQ(l32_.rlim_max, pr_l32_.rlim_max);
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);
}
}
// Force rlim_max to be bigger than a constant so we can continue following test.
// Change resource limit setting with "ulimit -Hc" in the shell if this test fails.
TEST_F(SysResourceTest, RLIMIT_CORE_rlim_max_not_zero) {
ASSERT_TRUE(l32_.rlim_max == RLIM_INFINITY || l32_.rlim_max >= 456U) <<
"RLIMIT_CORE rlim_max = " << l32_.rlim_max;
}
TEST_F(SysResourceTest, get_resource_limit_equal) {
CheckResourceLimits();
}
TEST_F(SysResourceTest, setrlimit) {
l32_.rlim_cur = 123U;
ASSERT_EQ(0, setrlimit(RLIMIT_CORE, &l32_));
CheckResourceLimits();
ASSERT_EQ(123U, l32_.rlim_cur);
}
TEST_F(SysResourceTest, setrlimit64) {
l64_.rlim_cur = 456U;
ASSERT_EQ(0, setrlimit64(RLIMIT_CORE, &l64_));
CheckResourceLimits();
ASSERT_EQ(456U, l64_.rlim_cur);
}
TEST_F(SysResourceTest, prlimit) {
pr_l32_.rlim_cur = pr_l32_.rlim_max;
ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, &pr_l32_, nullptr));
CheckResourceLimits();
ASSERT_EQ(pr_l32_.rlim_max, pr_l32_.rlim_cur);
}
TEST_F(SysResourceTest, prlimit64) {
pr_l64_.rlim_cur = pr_l64_.rlim_max;
ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, &pr_l64_, nullptr));
CheckResourceLimits();
ASSERT_EQ(pr_l64_.rlim_max, pr_l64_.rlim_cur);
}
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