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/socket.h>
25 #include <sys/types.h>
31 #include "poll-loop.h"
32 #include "socket-util.h"
34 #include "stream-provider.h"
35 #include "stream-fd.h"
38 VLOG_DEFINE_THIS_MODULE(stream_unix);
40 /* Active UNIX socket. */
42 /* Number of unix sockets created so far, to ensure binding path uniqueness. */
43 static int n_unix_sockets;
46 unix_open(const char *name, char *suffix, struct stream **streamp)
48 const char *connect_path = suffix;
52 bind_path = xasprintf("/tmp/stream-unix.%ld.%d",
53 (long int) getpid(), n_unix_sockets++);
54 fd = make_unix_socket(SOCK_STREAM, true, false, bind_path, connect_path);
56 VLOG_ERR("%s: connection to %s failed: %s",
57 bind_path, connect_path, strerror(-fd));
62 return new_fd_stream(name, fd, check_connection_completion(fd),
66 struct stream_class unix_stream_class = {
78 /* Passive UNIX socket. */
80 static int punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
81 struct stream **streamp);
84 punix_open(const char *name OVS_UNUSED, char *suffix,
85 struct pstream **pstreamp)
89 fd = make_unix_socket(SOCK_STREAM, true, true, suffix, NULL);
91 VLOG_ERR("%s: binding failed: %s", suffix, strerror(errno));
95 if (listen(fd, 10) < 0) {
97 VLOG_ERR("%s: listen: %s", name, strerror(error));
102 return new_fd_pstream("punix", fd, punix_accept,
103 xstrdup(suffix), pstreamp);
107 punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
108 struct stream **streamp)
110 const struct sockaddr_un *sun = (const struct sockaddr_un *) sa;
111 int name_len = get_unix_name_len(sa_len);
115 snprintf(name, sizeof name, "unix:%.*s", name_len, sun->sun_path);
117 strcpy(name, "unix");
119 return new_fd_stream(name, fd, 0, NULL, streamp);
122 struct pstream_class punix_pstream_class = {