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 }
30
31 class SysResourceTest : public ::testing::Test {
32 protected:
SetUp()33 virtual void SetUp() {
34 ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32_));
35 ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64_));
36 ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, nullptr, &pr_l32_));
37 ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, nullptr, &pr_l64_));
38 }
39
40 void CheckResourceLimits();
41
42 protected:
43 rlimit l32_;
44 rlimit64 l64_;
45 rlimit pr_l32_;
46 rlimit64 pr_l64_;
47 };
48
CheckResourceLimits()49 void SysResourceTest::CheckResourceLimits() {
50 ASSERT_EQ(0, getrlimit(RLIMIT_CORE, &l32_));
51 ASSERT_EQ(0, getrlimit64(RLIMIT_CORE, &l64_));
52 ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, nullptr, &pr_l32_));
53 ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, nullptr, &pr_l64_));
54
55 ASSERT_EQ(l32_.rlim_cur, pr_l32_.rlim_cur);
56 ASSERT_EQ(l64_.rlim_cur, pr_l64_.rlim_cur);
57
58 if (l64_.rlim_cur == RLIM64_INFINITY) {
59 ASSERT_EQ(RLIM_INFINITY, l32_.rlim_cur);
60 } else {
61 ASSERT_EQ(l64_.rlim_cur, l32_.rlim_cur);
62 }
63
64 ASSERT_EQ(l32_.rlim_max, pr_l32_.rlim_max);
65 ASSERT_EQ(l64_.rlim_max, pr_l64_.rlim_max);
66
67 if (l64_.rlim_max == RLIM64_INFINITY) {
68 ASSERT_EQ(RLIM_INFINITY, l32_.rlim_max);
69 } else {
70 ASSERT_EQ(l64_.rlim_max, l32_.rlim_max);
71 }
72 }
73
74 // Force rlim_max to be bigger than a constant so we can continue following test.
75 // Change resource limit setting with "ulimit -Hc" in the shell if this test fails.
TEST_F(SysResourceTest,RLIMIT_CORE_rlim_max_not_zero)76 TEST_F(SysResourceTest, RLIMIT_CORE_rlim_max_not_zero) {
77 ASSERT_TRUE(l32_.rlim_max == RLIM_INFINITY || l32_.rlim_max >= 456U) <<
78 "RLIMIT_CORE rlim_max = " << l32_.rlim_max;
79 }
80
TEST_F(SysResourceTest,get_resource_limit_equal)81 TEST_F(SysResourceTest, get_resource_limit_equal) {
82 CheckResourceLimits();
83 }
84
TEST_F(SysResourceTest,setrlimit)85 TEST_F(SysResourceTest, setrlimit) {
86 l32_.rlim_cur = 123U;
87 ASSERT_EQ(0, setrlimit(RLIMIT_CORE, &l32_));
88 CheckResourceLimits();
89 ASSERT_EQ(123U, l32_.rlim_cur);
90 }
91
TEST_F(SysResourceTest,setrlimit64)92 TEST_F(SysResourceTest, setrlimit64) {
93 l64_.rlim_cur = 456U;
94 ASSERT_EQ(0, setrlimit64(RLIMIT_CORE, &l64_));
95 CheckResourceLimits();
96 ASSERT_EQ(456U, l64_.rlim_cur);
97 }
98
TEST_F(SysResourceTest,prlimit)99 TEST_F(SysResourceTest, prlimit) {
100 pr_l32_.rlim_cur = pr_l32_.rlim_max;
101 ASSERT_EQ(0, prlimit(0, RLIMIT_CORE, &pr_l32_, nullptr));
102 CheckResourceLimits();
103 ASSERT_EQ(pr_l32_.rlim_max, pr_l32_.rlim_cur);
104 }
105
TEST_F(SysResourceTest,prlimit64)106 TEST_F(SysResourceTest, prlimit64) {
107 pr_l64_.rlim_cur = pr_l64_.rlim_max;
108 ASSERT_EQ(0, prlimit64(0, RLIMIT_CORE, &pr_l64_, nullptr));
109 CheckResourceLimits();
110 ASSERT_EQ(pr_l64_.rlim_max, pr_l64_.rlim_cur);
111 }
112