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 <errno.h>
17 #include <fcntl.h>
18 #include <stdio.h>
19 #include <string.h>
20 #include <sys/uio.h>
21
22 #include "filepath_util.h"
23
24 /**
25 * @tc.name : readv_0100
26 * @tc.desc : read data into multiple buffers
27 * @tc.level : Level 0
28 */
readv_0100(void)29 void readv_0100(void)
30 {
31 char path[PATH_MAX] = {0};
32 FILE_ABSOLUTE_PATH(STR_FILE_TXT, path);
33 int fd = open(path, O_RDWR | O_CREAT, TEST_MODE);
34
35 char buf1[] = "hello";
36 char buf2[] = "world";
37 struct iovec ios[] = {{buf1, strlen(buf1)}, {buf2, strlen(buf2)}};
38
39 ssize_t result = writev(fd, ios, sizeof(ios) / sizeof(struct iovec));
40 if (result != strlen(buf1) + strlen(buf2)) {
41 t_error("%s failed: result = %ld\n", __func__, result);
42 }
43
44 lseek(fd, 0, SEEK_SET);
45
46 memset(buf1, 0, sizeof(buf1));
47 memset(buf2, 0, sizeof(buf2));
48
49 result = readv(fd, ios, sizeof(ios) / sizeof(struct iovec));
50 if (result != strlen(buf1) + strlen(buf2)) {
51 t_error("%s failed: result = %ld\n", __func__, result);
52 }
53
54 if (strcmp(buf1, "hello")) {
55 t_error("%s failed: buf1 = %s\n", __func__, buf1);
56 }
57
58 if (strcmp(buf2, "world")) {
59 t_error("%s failed: buf2 = %s\n", __func__, buf2);
60 }
61
62 remove(path);
63 }
64
65 /**
66 * @tc.name : readv_0200
67 * @tc.desc : read data into multiple buffers with invalid parameters
68 * @tc.level : Level 2
69 */
readv_0200(void)70 void readv_0200(void)
71 {
72 errno = 0;
73 ssize_t result = readv(-1, NULL, -1);
74 if (result == 0) {
75 t_error("%s failed: result = %ld\n", __func__, result);
76 }
77
78 if (errno == 0) {
79 t_error("%s failed: errno = %d\n", __func__, errno);
80 }
81 }
82
main(int argc,char * argv[])83 int main(int argc, char *argv[])
84 {
85 readv_0100();
86 readv_0200();
87
88 return t_status;
89 }
90