2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
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:
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
23 #include <sys/socket.h>
24 #include <sys/types.h>
29 #include "ovs-atomic.h"
31 #include "openvswitch/poll-loop.h"
32 #include "socket-util.h"
35 #include "stream-provider.h"
36 #include "stream-fd.h"
37 #include "openvswitch/vlog.h"
39 VLOG_DEFINE_THIS_MODULE(stream_unix
);
41 /* Active UNIX socket. */
44 unix_open(const char *name
, char *suffix
, struct stream
**streamp
,
45 uint8_t dscp OVS_UNUSED
)
50 connect_path
= abs_file_name(ovs_rundir(), suffix
);
51 fd
= make_unix_socket(SOCK_STREAM
, true, NULL
, connect_path
);
54 VLOG_DBG("%s: connection failed (%s)",
55 connect_path
, ovs_strerror(-fd
));
61 return new_fd_stream(xstrdup(name
), fd
, check_connection_completion(fd
),
65 const struct stream_class unix_stream_class
= {
67 false, /* needs_probes */
78 /* Passive UNIX socket. */
80 static int punix_accept(int fd
, const struct sockaddr_storage
*ss
,
81 size_t ss_len
, struct stream
**streamp
);
84 punix_open(const char *name OVS_UNUSED
, char *suffix
,
85 struct pstream
**pstreamp
, uint8_t dscp OVS_UNUSED
)
90 bind_path
= abs_file_name(ovs_rundir(), suffix
);
91 fd
= make_unix_socket(SOCK_STREAM
, true, bind_path
, NULL
);
93 VLOG_ERR("%s: binding failed: %s", bind_path
, ovs_strerror(errno
));
98 if (listen(fd
, 64) < 0) {
100 VLOG_ERR("%s: listen: %s", name
, ovs_strerror(error
));
106 return new_fd_pstream(xstrdup(name
), fd
,
107 punix_accept
, bind_path
, pstreamp
);
111 punix_accept(int fd
, const struct sockaddr_storage
*ss
, size_t ss_len
,
112 struct stream
**streamp
)
114 const struct sockaddr_un
*sun
= (const struct sockaddr_un
*) ss
;
115 int name_len
= get_unix_name_len(sun
, ss_len
);
119 bound_name
= xasprintf("unix:%.*s", name_len
, sun
->sun_path
);
121 /* When a Unix socket connects to us without first binding a name, we
122 * don't get any name for it. It's useful nevertheless to be able to
123 * distinguish separate sockets in log messages, so use a counter. */
124 static atomic_count next_idx
= ATOMIC_COUNT_INIT(0);
125 bound_name
= xasprintf("unix#%u", atomic_count_inc(&next_idx
));
127 return new_fd_stream(bound_name
, fd
, 0, AF_UNIX
, streamp
);
130 const struct pstream_class punix_pstream_class
= {