1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <sys/resource.h>
18
19 #include <gtest/gtest.h>
20
TEST(sys_resource,rlimit_struct_size)21 TEST(sys_resource, rlimit_struct_size) {
22 #if defined(__LP64__) || defined(__GLIBC__)
23 ASSERT_EQ(sizeof(rlimit), sizeof(rlimit64));
24 ASSERT_EQ(8U, sizeof(rlim_t));
25 #else
26 ASSERT_NE(sizeof(rlimit), sizeof(rlimit64));
27 ASSERT_EQ(4U, sizeof(rlim_t));
28 #endif
29 ASSERT_EQ(8U, sizeof(rlim64_t));
30 }
31
32 class SysResourceTest : public ::testing::Test {
33 protected:
SetUp()34 void SetUp() override {
35 ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32_));
36 ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64_));
37 ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, nullptr, &pr_l32_));
38 ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, nullptr, &pr_l64_));
39 }
40
41 void CheckResourceLimits();
42
43 protected:
44 rlimit l32_;
45 rlimit64 l64_;
46 rlimit pr_l32_;
47 rlimit64 pr_l64_;
48 };
49
CheckResourceLimits()50 void SysResourceTest::CheckResourceLimits() {
51 ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32_));
52 ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64_));
53 ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, nullptr, &pr_l32_));
54 ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, nullptr, &pr_l64_));
55
56 ASSERT_EQ(l32_.rlim_cur, pr_l32_.rlim_cur);
57 ASSERT_EQ(l64_.rlim_cur, pr_l64_.rlim_cur);
58
59 if (l64_.rlim_cur == RLIM64_INFINITY) {
60 ASSERT_EQ(RLIM_INFINITY, l32_.rlim_cur);
61 } else {
62 ASSERT_EQ(l64_.rlim_cur, l32_.rlim_cur);
63 }
64
65 ASSERT_EQ(l32_.rlim_max, pr_l32_.rlim_max);
66 ASSERT_EQ(l64_.rlim_max, pr_l64_.rlim_max);
67
68 if (l64_.rlim_max == RLIM64_INFINITY) {
69 ASSERT_EQ(RLIM_INFINITY, l32_.rlim_max);
70 } else {
71 ASSERT_EQ(l64_.rlim_max, l32_.rlim_max);
72 }
73 }
74
75 // Force rlim_max to be bigger than a constant so we can continue following test.
76 // Change resource limit setting with "ulimit -Hc" in the shell if this test fails.
TEST_F(SysResourceTest,RLIMIT_CORE_rlim_max_not_zero)77 TEST_F(SysResourceTest, RLIMIT_CORE_rlim_max_not_zero) {
78 ASSERT_TRUE(l32_.rlim_max == RLIM_INFINITY || l32_.rlim_max >= 456U) <<
79 "RLIMIT_CORE rlim_max = " << l32_.rlim_max;
80 }
81
TEST_F(SysResourceTest,get_resource_limit_equal)82 TEST_F(SysResourceTest, get_resource_limit_equal) {
83 CheckResourceLimits();
84 }
85
TEST_F(SysResourceTest,setrlimit)86 TEST_F(SysResourceTest, setrlimit) {
87 l32_.rlim_cur = 123U;
88 ASSERT_EQ(0, setrlimit(RLIMIT_CORE, &l32_));
89 CheckResourceLimits();
90 ASSERT_EQ(123U, l32_.rlim_cur);
91 }
92
TEST_F(SysResourceTest,setrlimit64_smoke)93 TEST_F(SysResourceTest, setrlimit64_smoke) {
94 l64_.rlim_cur = 456U;
95 ASSERT_EQ(0, setrlimit64(RLIMIT_CORE, &l64_));
96 CheckResourceLimits();
97 ASSERT_EQ(456U, l64_.rlim_cur);
98 }
99
TEST_F(SysResourceTest,prlimit)100 TEST_F(SysResourceTest, prlimit) {
101 pr_l32_.rlim_cur = pr_l32_.rlim_max;
102 ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, &pr_l32_, nullptr));
103 CheckResourceLimits();
104 ASSERT_EQ(pr_l32_.rlim_max, pr_l32_.rlim_cur);
105 }
106
TEST_F(SysResourceTest,prlimit64_smoke)107 TEST_F(SysResourceTest, prlimit64_smoke) {
108 pr_l64_.rlim_cur = pr_l64_.rlim_max;
109 ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, &pr_l64_, nullptr));
110 CheckResourceLimits();
111 ASSERT_EQ(pr_l64_.rlim_max, pr_l64_.rlim_cur);
112 }
113