jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibCore/System.h>
8#include <LibTest/TestCase.h>
9
10TEST_CASE(posix_fallocate_basics)
11{
12 char pattern[] = "/tmp/posix_fallocate.XXXXXX";
13 auto fd = MUST(Core::System::mkstemp(pattern));
14 VERIFY(fd >= 0);
15
16 {
17 // Valid use, grows file to new size.
18 auto result = Core::System::posix_fallocate(fd, 0, 1024);
19 EXPECT_EQ(result.is_error(), false);
20
21 auto stat = MUST(Core::System::fstat(fd));
22 EXPECT_EQ(stat.st_size, 1024);
23 }
24
25 {
26 // Invalid fd (-1)
27 auto result = Core::System::posix_fallocate(-1, 0, 1024);
28 EXPECT_EQ(result.is_error(), true);
29 EXPECT_EQ(result.error().code(), EBADF);
30 }
31
32 {
33 // Invalid length (-1)
34 auto result = Core::System::posix_fallocate(fd, 0, -1);
35 EXPECT_EQ(result.is_error(), true);
36 EXPECT_EQ(result.error().code(), EINVAL);
37 }
38
39 {
40 // Invalid length (0)
41 auto result = Core::System::posix_fallocate(fd, 0, 0);
42 EXPECT_EQ(result.is_error(), true);
43 EXPECT_EQ(result.error().code(), EINVAL);
44 }
45
46 {
47 // Invalid offset (-1)
48 auto result = Core::System::posix_fallocate(fd, -1, 1024);
49 EXPECT_EQ(result.is_error(), true);
50 EXPECT_EQ(result.error().code(), EINVAL);
51 }
52
53 MUST(Core::System::close(fd));
54}
55
56TEST_CASE(posix_fallocate_on_device_file)
57{
58 auto fd = MUST(Core::System::open("/dev/zero"sv, O_RDWR));
59 VERIFY(fd >= 0);
60 auto result = Core::System::posix_fallocate(fd, 0, 100);
61 EXPECT_EQ(result.is_error(), true);
62 EXPECT_EQ(result.error().code(), ENODEV);
63 MUST(Core::System::close(fd));
64}
65
66TEST_CASE(posix_fallocate_on_pipe)
67{
68 auto pipefds = MUST(Core::System::pipe2(0));
69 auto result = Core::System::posix_fallocate(pipefds[1], 0, 100);
70 EXPECT_EQ(result.is_error(), true);
71 EXPECT_EQ(result.error().code(), ESPIPE);
72 MUST(Core::System::close(pipefds[0]));
73 MUST(Core::System::close(pipefds[1]));
74}