1/*
2 * Copyright (C) 2015 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 <sys/uio.h>
20
21#include "TemporaryFile.h"
22
23TEST(sys_uio, readv_writev) {
24  TemporaryFile tf;
25
26  char buf1[] = "hello";
27  char buf2[] = "world";
28  iovec ios[] = { { buf1, 5 }, { buf2, 5 } };
29
30  ASSERT_EQ(10, writev(tf.fd, ios, 2));
31
32  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
33
34  memset(buf1, '1', sizeof(buf1));
35  memset(buf2, '2', sizeof(buf2));
36
37  ASSERT_EQ(10, readv(tf.fd, ios, 2));
38  buf1[5] = buf2[5] = '\0';
39  ASSERT_STREQ("hello", buf1);
40  ASSERT_STREQ("world", buf2);
41}
42
43template <typename ReadFn, typename WriteFn>
44void TestPreadVPwriteV(ReadFn read_fn, WriteFn write_fn) {
45  TemporaryFile tf;
46
47  char buf[] = "world";
48  iovec ios[] = { { buf, 5 } };
49
50  ASSERT_EQ(5, write_fn(tf.fd, ios, 1, 5));
51  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_CUR));
52
53  strcpy(buf, "hello");
54  ASSERT_EQ(5, write_fn(tf.fd, ios, 1, 0));
55  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_CUR));
56
57  ASSERT_EQ(5, read_fn(tf.fd, ios, 1, 5));
58  ASSERT_STREQ("world", buf);
59  ASSERT_EQ(5, read_fn(tf.fd, ios, 1, 0));
60  ASSERT_STREQ("hello", buf);
61}
62
63TEST(sys_uio, preadv_pwritev) {
64  TestPreadVPwriteV(preadv, pwritev);
65}
66
67TEST(sys_uio, preadv64_pwritev64) {
68  TestPreadVPwriteV(preadv64, pwritev64);
69}
70
71TEST(sys_uio, process_vm_readv) {
72  ASSERT_EQ(0, process_vm_readv(0, nullptr, 0, nullptr, 0, 0));
73}
74
75TEST(sys_uio, process_vm_writev) {
76  ASSERT_EQ(0, process_vm_writev(0, nullptr, 0, nullptr, 0, 0));
77}
78