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
|
/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
*
* 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 <config.h>
#include "stream.h"
#include <errno.h>
#include <inttypes.h>
#include <netdb.h>
#include <poll.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "packets.h"
#include "poll-loop.h"
#include "socket-util.h"
#include "dirs.h"
#include "util.h"
#include "stream-provider.h"
#include "stream-fd.h"
#include "openvswitch/vlog.h"
VLOG_DEFINE_THIS_MODULE(stream_unix);
/* Active UNIX socket. */
static int
unix_open(const char *name, char *suffix, struct stream **streamp,
uint8_t dscp OVS_UNUSED)
{
char *connect_path;
int fd;
connect_path = abs_file_name(ovs_rundir(), suffix);
fd = make_unix_socket(SOCK_STREAM, true, NULL, connect_path);
if (fd < 0) {
VLOG_DBG("%s: connection failed (%s)",
connect_path, ovs_strerror(-fd));
free(connect_path);
return -fd;
}
free(connect_path);
return new_fd_stream(name, fd, check_connection_completion(fd),
AF_UNIX, streamp);
}
const struct stream_class unix_stream_class = {
"unix", /* name */
false, /* needs_probes */
unix_open, /* open */
NULL, /* close */
NULL, /* connect */
NULL, /* recv */
NULL, /* send */
NULL, /* run */
NULL, /* run_wait */
NULL, /* wait */
};
/* Passive UNIX socket. */
static int punix_accept(int fd, const struct sockaddr_storage *ss,
size_t ss_len, struct stream **streamp);
static int
punix_open(const char *name OVS_UNUSED, char *suffix,
struct pstream **pstreamp, uint8_t dscp OVS_UNUSED)
{
char *bind_path;
int fd, error;
bind_path = abs_file_name(ovs_rundir(), suffix);
fd = make_unix_socket(SOCK_STREAM, true, bind_path, NULL);
if (fd < 0) {
VLOG_ERR("%s: binding failed: %s", bind_path, ovs_strerror(errno));
free(bind_path);
return errno;
}
if (listen(fd, 64) < 0) {
error = errno;
VLOG_ERR("%s: listen: %s", name, ovs_strerror(error));
close(fd);
free(bind_path);
return error;
}
return new_fd_pstream(name, fd, punix_accept, bind_path, pstreamp);
}
static int
punix_accept(int fd, const struct sockaddr_storage *ss, size_t ss_len,
struct stream **streamp)
{
const struct sockaddr_un *sun = (const struct sockaddr_un *) ss;
int name_len = get_unix_name_len(ss_len);
char name[128];
if (name_len > 0) {
snprintf(name, sizeof name, "unix:%.*s", name_len, sun->sun_path);
} else {
strcpy(name, "unix");
}
return new_fd_stream(name, fd, 0, AF_UNIX, streamp);
}
const struct pstream_class punix_pstream_class = {
"punix",
false,
punix_open,
NULL,
NULL,
NULL,
};
|
