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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 <stdio.h>
18 #include <stdlib.h>
19 #include <string.h>
20 #include <sys/uio.h>
21 #include "test.h"
22 
vmsplice_0100(void)23 void vmsplice_0100(void)
24 {
25     int pipe_size = 2;
26     int iov_length = 6;
27     int pipe_fds[pipe_size];
28     if (pipe(pipe_fds) != 0) {
29         t_error("%s create pipe error\n", __func__);
30     }
31     struct iovec v[pipe_size];
32     char *str_hello = "hello ";
33     char *str_world = "world\n";
34     v[0].iov_base = str_hello;
35     v[0].iov_len = iov_length;
36     v[1].iov_base = str_world;
37     v[1].iov_len = iov_length;
38     size_t result = vmsplice(pipe_fds[1], v, sizeof(v) / sizeof(struct iovec), 0);
39     if (result != v[0].iov_len + v[1].iov_len) {
40         t_error("%s vmsplice error get result is %d are not want %d\n", __func__, result, v[0].iov_len + v[1].iov_len);
41     }
42     close(pipe_fds[1]);
43     char buf[BUFSIZ];
44     FILE *fp = fdopen(pipe_fds[0], "r");
45     if (!fp) {
46         t_error("%s fdopen get ptr is NULL\n", __func__);
47     }
48     if (!fgets(buf, sizeof(buf), fp)) {
49         t_error("%s fgets get ptr is NULL\n", __func__);
50     }
51     fclose(fp);
52     if (strcmp(buf, "hello world\n") != 0) {
53         t_error("%s fgets get str is '%s' are not want 'hello world'\n", __func__, buf);
54     }
55 }
56 
main(int argc,char * argv[])57 int main(int argc, char *argv[])
58 {
59     vmsplice_0100();
60     return t_status;
61 }