1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
41 #include <sys/types.h>
47 #include "socket-util.h"
50 #include "ofp-print.h"
52 #include "poll-loop.h"
53 #include "vconn-stream.h"
56 #define THIS_MODULE VLM_vconn_unix
58 /* Active UNIX socket. */
60 /* Number of unix sockets created so far, to ensure binding path uniqueness. */
61 static int n_unix_sockets;
64 unix_open(const char *name, char *suffix, struct vconn **vconnp)
66 const char *connect_path = suffix;
70 sprintf(bind_path, "/tmp/vconn-unix.%ld.%d",
71 (long int) getpid(), n_unix_sockets++);
72 fd = make_unix_socket(SOCK_STREAM, true, false, bind_path, connect_path);
74 VLOG_ERR("%s: connection to %s failed: %s",
75 bind_path, connect_path, strerror(-fd));
79 return new_stream_vconn(name, fd, check_connection_completion(fd),
83 struct vconn_class unix_vconn_class = {
88 /* Passive UNIX socket. */
90 static int punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
91 struct vconn **vconnp);
94 punix_open(const char *name, char *suffix, struct vconn **vconnp)
98 fd = make_unix_socket(SOCK_STREAM, true, true, suffix, NULL);
100 VLOG_ERR("%s: binding failed: %s", suffix, strerror(errno));
104 return new_pstream_vconn("punix", fd, punix_accept, vconnp);
108 punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
109 struct vconn **vconnp)
111 const struct sockaddr_un *sun = (const struct sockaddr_un *) sa;
114 if (sa_len >= offsetof(struct sockaddr_un, sun_path)) {
115 snprintf(name, sizeof name, "unix:%.*s",
116 (int) (sa_len - offsetof(struct sockaddr_un, sun_path)),
119 strcpy(name, "unix");
121 return new_stream_vconn(name, fd, 0, 0, vconnp);
124 struct vconn_class punix_vconn_class = {