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 */
17 #include <gtest/gtest.h>
18 #include "ScopedSignalHandler.h"
19 #include "TemporaryFile.h"
21 #include <errno.h>
22 #include <fcntl.h>
23 #include <stdint.h>
24 #include <unistd.h>
26 TEST(unistd, sysconf_SC_MONOTONIC_CLOCK) {
27 ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0);
28 }
30 TEST(unistd, sbrk) {
31 void* initial_break = sbrk(0);
33 void* new_break = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(initial_break) + 2000);
34 ASSERT_EQ(0, brk(new_break));
36 void* final_break = sbrk(0);
37 ASSERT_EQ(final_break, new_break);
38 }
40 TEST(unistd, truncate) {
41 TemporaryFile tf;
42 ASSERT_EQ(0, close(tf.fd));
43 ASSERT_EQ(0, truncate(tf.filename, 123));
45 struct stat sb;
46 ASSERT_EQ(0, stat(tf.filename, &sb));
47 ASSERT_EQ(123, sb.st_size);
48 }
50 TEST(unistd, truncate64) {
51 TemporaryFile tf;
52 ASSERT_EQ(0, close(tf.fd));
53 ASSERT_EQ(0, truncate64(tf.filename, 123));
55 struct stat sb;
56 ASSERT_EQ(0, stat(tf.filename, &sb));
57 ASSERT_EQ(123, sb.st_size);
58 }
60 TEST(unistd, ftruncate) {
61 TemporaryFile tf;
62 ASSERT_EQ(0, ftruncate(tf.fd, 123));
63 ASSERT_EQ(0, close(tf.fd));
65 struct stat sb;
66 ASSERT_EQ(0, stat(tf.filename, &sb));
67 ASSERT_EQ(123, sb.st_size);
68 }
70 TEST(unistd, ftruncate64) {
71 TemporaryFile tf;
72 ASSERT_EQ(0, ftruncate64(tf.fd, 123));
73 ASSERT_EQ(0, close(tf.fd));
75 struct stat sb;
76 ASSERT_EQ(0, stat(tf.filename, &sb));
77 ASSERT_EQ(123, sb.st_size);
78 }
80 static bool gPauseTestFlag = false;
81 static void PauseTestSignalHandler(int) {
82 gPauseTestFlag = true;
83 }
85 TEST(unistd, pause) {
86 ScopedSignalHandler handler(SIGALRM, PauseTestSignalHandler);
88 alarm(1);
89 ASSERT_FALSE(gPauseTestFlag);
90 ASSERT_EQ(-1, pause());
91 ASSERT_TRUE(gPauseTestFlag);
92 }
94 TEST(unistd, read) {
95 int fd = open("/proc/version", O_RDONLY);
96 ASSERT_TRUE(fd != -1);
98 char buf[5];
99 ASSERT_EQ(5, read(fd, buf, 5));
100 ASSERT_EQ(buf[0], 'L');
101 ASSERT_EQ(buf[1], 'i');
102 ASSERT_EQ(buf[2], 'n');
103 ASSERT_EQ(buf[3], 'u');
104 ASSERT_EQ(buf[4], 'x');
105 close(fd);
106 }
108 TEST(unistd, read_EBADF) {
109 // read returns ssize_t which is 64-bits on LP64, so it's worth explicitly checking that
110 // our syscall stubs correctly return a 64-bit -1.
111 char buf[1];
112 ASSERT_EQ(-1, read(-1, buf, sizeof(buf)));
113 ASSERT_EQ(EBADF, errno);
114 }
116 TEST(unistd, alarm) {
117 ASSERT_EQ(0U, alarm(0));
118 }