2 * Copyright (c) 2008, 2009, 2010 Nicira Networks.
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.
24 #include <sys/types.h>
30 #include "openflow/openflow.h"
32 #include "poll-loop.h"
33 #include "socket-util.h"
35 #include "vconn-provider.h"
36 #include "vconn-stream.h"
39 #define THIS_MODULE VLM_vconn_unix
41 /* Active UNIX socket. */
43 /* Number of unix sockets created so far, to ensure binding path uniqueness. */
44 static int n_unix_sockets;
47 unix_open(const char *name, char *suffix, struct vconn **vconnp)
49 const char *connect_path = suffix;
53 bind_path = xasprintf("/tmp/vconn-unix.%ld.%d",
54 (long int) getpid(), n_unix_sockets++);
55 fd = make_unix_socket(SOCK_STREAM, true, false, bind_path, connect_path);
57 VLOG_ERR("%s: connection to %s failed: %s",
58 bind_path, connect_path, strerror(-fd));
63 return new_stream_vconn(name, fd, check_connection_completion(fd),
67 struct vconn_class unix_vconn_class = {
77 /* Passive UNIX socket. */
79 static int punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
80 struct vconn **vconnp);
83 punix_open(const char *name OVS_UNUSED, char *suffix, struct pvconn **pvconnp)
87 fd = make_unix_socket(SOCK_STREAM, true, true, suffix, NULL);
89 VLOG_ERR("%s: binding failed: %s", suffix, strerror(errno));
93 error = set_nonblocking(fd);
99 if (listen(fd, 10) < 0) {
101 VLOG_ERR("%s: listen: %s", name, strerror(error));
106 return new_pstream_pvconn("punix", fd, punix_accept,
107 xstrdup(suffix), pvconnp);
111 punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
112 struct vconn **vconnp)
114 const struct sockaddr_un *sun = (const struct sockaddr_un *) sa;
115 int name_len = get_unix_name_len(sa_len);
119 snprintf(name, sizeof name, "unix:%.*s", name_len, sun->sun_path);
121 strcpy(name, "unix");
123 return new_stream_vconn(name, fd, 0, NULL, vconnp);
126 struct pvconn_class punix_pvconn_class = {