Elliott Hughes | da73f65 | 2012-11-30 16:40:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 <gtest/gtest.h> |
| 18 | |
| 19 | #include <errno.h> |
| 20 | #include <signal.h> |
| 21 | |
| 22 | template <typename Fn> |
| 23 | static void TestSigSet1(Fn fn) { |
| 24 | // NULL sigset_t*. |
| 25 | sigset_t* set_ptr = NULL; |
| 26 | errno = 0; |
| 27 | ASSERT_EQ(-1, fn(set_ptr)); |
| 28 | ASSERT_EQ(EINVAL, errno); |
| 29 | |
| 30 | // Non-NULL. |
| 31 | sigset_t set; |
| 32 | errno = 0; |
| 33 | ASSERT_EQ(0, fn(&set)); |
| 34 | ASSERT_EQ(0, errno); |
| 35 | } |
| 36 | |
| 37 | template <typename Fn> |
| 38 | static void TestSigSet2(Fn fn) { |
| 39 | // NULL sigset_t*. |
| 40 | sigset_t* set_ptr = NULL; |
| 41 | errno = 0; |
| 42 | ASSERT_EQ(-1, fn(set_ptr, SIGSEGV)); |
| 43 | ASSERT_EQ(EINVAL, errno); |
| 44 | |
| 45 | sigset_t set; |
| 46 | sigemptyset(&set); |
| 47 | |
| 48 | int min_signal = SIGHUP; |
| 49 | int max_signal = SIGRTMAX; |
| 50 | |
Elliott Hughes | fb5e5cb | 2013-01-07 13:58:49 -0800 | [diff] [blame] | 51 | #if defined(__BIONIC__) && !defined(__mips__) |
| 52 | // bionic's sigset_t is too small for ARM and x86: 32 bits instead of 64. |
Elliott Hughes | da73f65 | 2012-11-30 16:40:55 -0800 | [diff] [blame] | 53 | // This means you can't refer to any of the real-time signals. |
| 54 | // See http://b/3038348 and http://b/5828899. |
Elliott Hughes | fb5e5cb | 2013-01-07 13:58:49 -0800 | [diff] [blame] | 55 | max_signal = 32; |
Elliott Hughes | da73f65 | 2012-11-30 16:40:55 -0800 | [diff] [blame] | 56 | #else |
Elliott Hughes | fb5e5cb | 2013-01-07 13:58:49 -0800 | [diff] [blame] | 57 | // Other C libraries (or bionic for MIPS) are perfectly capable of using their largest signal. |
Elliott Hughes | da73f65 | 2012-11-30 16:40:55 -0800 | [diff] [blame] | 58 | ASSERT_GE(sizeof(sigset_t) * 8, static_cast<size_t>(SIGRTMAX)); |
| 59 | #endif |
| 60 | |
| 61 | // Bad signal number: too small. |
| 62 | errno = 0; |
| 63 | ASSERT_EQ(-1, fn(&set, 0)); |
| 64 | ASSERT_EQ(EINVAL, errno); |
| 65 | |
| 66 | // Bad signal number: too high. |
| 67 | errno = 0; |
| 68 | ASSERT_EQ(-1, fn(&set, max_signal + 1)); |
| 69 | ASSERT_EQ(EINVAL, errno); |
| 70 | |
| 71 | // Good signal numbers, low and high ends of range. |
| 72 | errno = 0; |
| 73 | ASSERT_EQ(0, fn(&set, min_signal)); |
| 74 | ASSERT_EQ(0, errno); |
| 75 | ASSERT_EQ(0, fn(&set, max_signal)); |
| 76 | ASSERT_EQ(0, errno); |
| 77 | } |
| 78 | |
| 79 | TEST(signal, sigismember_invalid) { |
| 80 | TestSigSet2(sigismember); |
| 81 | } |
| 82 | |
| 83 | TEST(signal, sigaddset_invalid) { |
| 84 | TestSigSet2(sigaddset); |
| 85 | } |
| 86 | |
| 87 | TEST(signal, sigdelset_invalid) { |
| 88 | TestSigSet2(sigdelset); |
| 89 | } |
| 90 | |
| 91 | TEST(signal, sigemptyset_invalid) { |
| 92 | TestSigSet1(sigemptyset); |
| 93 | } |
| 94 | |
| 95 | TEST(signal, sigfillset_invalid) { |
| 96 | TestSigSet1(sigfillset); |
| 97 | } |
Chris Dearman | d8a5a6f | 2012-12-07 18:41:10 -0800 | [diff] [blame] | 98 | |
| 99 | TEST(signal, raise_invalid) { |
| 100 | errno = 0; |
| 101 | ASSERT_EQ(-1, raise(-1)); |
| 102 | ASSERT_EQ(EINVAL, errno); |
| 103 | } |
Elliott Hughes | c5d028f | 2013-01-10 14:42:14 -0800 | [diff] [blame] | 104 | |
| 105 | static void HandleSIGALRM(int signal_number) { |
| 106 | ASSERT_EQ(SIGALRM, signal_number); |
| 107 | } |
| 108 | |
| 109 | TEST(signal, sigwait) { |
| 110 | struct sigaction action; |
| 111 | sigemptyset(&action.sa_mask); |
| 112 | action.sa_flags = 0; |
| 113 | action.sa_handler = HandleSIGALRM; |
| 114 | sigaction(SIGALRM, &action, NULL); |
| 115 | |
| 116 | sigset_t wait_set; |
| 117 | sigemptyset(&wait_set); |
| 118 | sigaddset(&wait_set, SIGALRM); |
| 119 | |
| 120 | alarm(1); |
| 121 | |
| 122 | int received_signal; |
| 123 | errno = 0; |
| 124 | ASSERT_EQ(0, sigwait(&wait_set, &received_signal)); |
| 125 | ASSERT_EQ(0, errno); |
| 126 | ASSERT_EQ(SIGALRM, received_signal); |
| 127 | } |