1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <fcntl.h>
17 #include <sys/eventfd.h>
18 #include "test.h"
19
20 /**
21 * @tc.name : eventfd_read_0100
22 * @tc.desc : Read the value of event through the file descriptor
23 * @tc.level : Level 0
24 */
eventfd_read_0100(void)25 void eventfd_read_0100(void)
26 {
27 unsigned int initial_value = 2;
28 int fd = eventfd(initial_value, O_NONBLOCK);
29 if (fd == -1) {
30 t_error("%s eventfd failed\n", __func__);
31 }
32
33 eventfd_t value = 123;
34 int result = eventfd_read(fd, &value);
35 if (result != 0) {
36 t_error("%s eventfd_read failed\n", __func__);
37 }
38
39 if (value != initial_value) {
40 t_error("%s eventfd_read value invalid\n", __func__);
41 }
42
43 close(fd);
44 }
45
46 /**
47 * @tc.name : eventfd_read_0200
48 * @tc.desc : When the file descriptor is invalid, test the return value of this function
49 * @tc.level : Level 2
50 */
eventfd_read_0200(void)51 void eventfd_read_0200(void)
52 {
53 eventfd_t value = 123;
54 int result = eventfd_read(-1, &value);
55 if (result != -1) {
56 t_error("%s eventfd_read should be failed\n", __func__);
57 }
58 }
59
60 /**
61 * @tc.name : eventfd_read_0300
62 * @tc.desc : When the eventfd_t value is invalid, test the return value of this function
63 * @tc.level : Level 2
64 */
eventfd_read_0300(void)65 void eventfd_read_0300(void)
66 {
67 unsigned int initial_value = 2;
68 int fd = eventfd(initial_value, O_NONBLOCK);
69 if (fd == -1) {
70 t_error("%s eventfd failed\n", __func__);
71 }
72
73 int result = eventfd_read(fd, NULL);
74 if (result != -1) {
75 t_error("%s eventfd_read should be failed\n", __func__);
76 }
77
78 close(fd);
79 }
80
main(int argc, char *argv[])81 int main(int argc, char *argv[])
82 {
83 eventfd_read_0100();
84 eventfd_read_0200();
85 eventfd_read_0300();
86 return t_status;
87 }