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/*
* Copyright (c) 2008, 2009 Nicira Networks.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include "vconn.h"
#include <assert.h>
#include <errno.h>
#include <inttypes.h>
#include <netdb.h>
#include <poll.h>
#include <sys/types.h>
#include <sys/un.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ofpbuf.h"
#include "openflow/openflow.h"
#include "packets.h"
#include "poll-loop.h"
#include "socket-util.h"
#include "util.h"
#include "vconn-provider.h"
#include "vconn-stream.h"
#include "vlog.h"
#define THIS_MODULE VLM_vconn_unix
/* Active UNIX socket. */
/* Number of unix sockets created so far, to ensure binding path uniqueness. */
static int n_unix_sockets;
static int
unix_open(const char *name, char *suffix, struct vconn **vconnp)
{
const char *connect_path = suffix;
char bind_path[128];
int fd;
sprintf(bind_path, "/tmp/vconn-unix.%ld.%d",
(long int) getpid(), n_unix_sockets++);
fd = make_unix_socket(SOCK_STREAM, true, false, bind_path, connect_path);
if (fd < 0) {
VLOG_ERR("%s: connection to %s failed: %s",
bind_path, connect_path, strerror(-fd));
return -fd;
}
return new_stream_vconn(name, fd, check_connection_completion(fd),
0, true, vconnp);
}
struct vconn_class unix_vconn_class = {
"unix", /* name */
unix_open, /* open */
NULL, /* close */
NULL, /* connect */
NULL, /* recv */
NULL, /* send */
NULL, /* wait */
};
/* Passive UNIX socket. */
static int punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
struct vconn **vconnp);
static int
punix_open(const char *name UNUSED, char *suffix, struct pvconn **pvconnp)
{
int fd;
fd = make_unix_socket(SOCK_STREAM, true, true, suffix, NULL);
if (fd < 0) {
VLOG_ERR("%s: binding failed: %s", suffix, strerror(errno));
return errno;
}
return new_pstream_pvconn("punix", fd, punix_accept, pvconnp);
}
static int
punix_accept(int fd, const struct sockaddr *sa, size_t sa_len,
struct vconn **vconnp)
{
const struct sockaddr_un *sun = (const struct sockaddr_un *) sa;
int name_len = get_unix_name_len(sa_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_stream_vconn(name, fd, 0, 0, true, vconnp);
}
struct pvconn_class punix_pvconn_class = {
"punix",
punix_open,
NULL,
NULL,
NULL
};
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