1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
// Copyright 2018 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "gtest/gtest.h"
#include "test/syscalls/linux/socket_test_util.h"
#include "test/util/file_descriptor.h"
#include "test/util/temp_umask.h"
#include "test/util/test_util.h"
namespace gvisor {
namespace testing {
TEST(SocketTest, UnixSocketPairProtocol) {
int socks[2];
ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, PF_UNIX, socks),
SyscallSucceeds());
close(socks[0]);
close(socks[1]);
}
TEST(SocketTest, ProtocolUnix) {
struct {
int domain, type, protocol;
} tests[] = {
{AF_UNIX, SOCK_STREAM, PF_UNIX},
{AF_UNIX, SOCK_SEQPACKET, PF_UNIX},
{AF_UNIX, SOCK_DGRAM, PF_UNIX},
};
for (int i = 0; i < ABSL_ARRAYSIZE(tests); i++) {
ASSERT_NO_ERRNO_AND_VALUE(
Socket(tests[i].domain, tests[i].type, tests[i].protocol));
}
}
TEST(SocketTest, ProtocolInet) {
struct {
int domain, type, protocol;
} tests[] = {
{AF_INET, SOCK_DGRAM, IPPROTO_UDP},
{AF_INET, SOCK_STREAM, IPPROTO_TCP},
};
for (int i = 0; i < ABSL_ARRAYSIZE(tests); i++) {
ASSERT_NO_ERRNO_AND_VALUE(
Socket(tests[i].domain, tests[i].type, tests[i].protocol));
}
}
TEST(SocketTest, UnixSocketStat) {
SKIP_IF(IsRunningWithVFS1());
FileDescriptor bound =
ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
// The permissions of the file created with bind(2) should be defined by the
// permissions of the bound socket and the umask.
mode_t sock_perm = 0765, mask = 0123;
ASSERT_THAT(fchmod(bound.get(), sock_perm), SyscallSucceeds());
TempUmask m(mask);
struct sockaddr_un addr =
ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX));
ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr),
sizeof(addr)),
SyscallSucceeds());
struct stat statbuf = {};
ASSERT_THAT(stat(addr.sun_path, &statbuf), SyscallSucceeds());
// Mode should be S_IFSOCK.
EXPECT_EQ(statbuf.st_mode, S_IFSOCK | sock_perm & ~mask);
// Timestamps should be equal and non-zero.
EXPECT_NE(statbuf.st_atime, 0);
EXPECT_EQ(statbuf.st_atime, statbuf.st_mtime);
EXPECT_EQ(statbuf.st_atime, statbuf.st_ctime);
}
TEST(SocketTest, UnixConnectNeedsWritePerm) {
SKIP_IF(IsRunningWithVFS1());
FileDescriptor bound =
ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
struct sockaddr_un addr =
ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX));
ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr),
sizeof(addr)),
SyscallSucceeds());
ASSERT_THAT(listen(bound.get(), 1), SyscallSucceeds());
// Connect should fail without write perms.
ASSERT_THAT(chmod(addr.sun_path, 0500), SyscallSucceeds());
FileDescriptor client =
ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
EXPECT_THAT(connect(client.get(), reinterpret_cast<struct sockaddr*>(&addr),
sizeof(addr)),
SyscallFailsWithErrno(EACCES));
// Connect should succeed with write perms.
ASSERT_THAT(chmod(addr.sun_path, 0200), SyscallSucceeds());
EXPECT_THAT(connect(client.get(), reinterpret_cast<struct sockaddr*>(&addr),
sizeof(addr)),
SyscallSucceeds());
}
using SocketOpenTest = ::testing::TestWithParam<int>;
// UDS cannot be opened.
TEST_P(SocketOpenTest, Unix) {
// FIXME(b/142001530): Open incorrectly succeeds on gVisor.
SKIP_IF(IsRunningWithVFS1());
FileDescriptor bound =
ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX));
struct sockaddr_un addr =
ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX));
ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr),
sizeof(addr)),
SyscallSucceeds());
EXPECT_THAT(open(addr.sun_path, GetParam()), SyscallFailsWithErrno(ENXIO));
}
INSTANTIATE_TEST_SUITE_P(OpenModes, SocketOpenTest,
::testing::Values(O_RDONLY, O_RDWR));
} // namespace testing
} // namespace gvisor
|
