diff options
| -rw-r--r-- | net/stream.c | 107 | ||||
| -rw-r--r-- | qapi/net.json | 2 | ||||
| -rw-r--r-- | qemu-options.hx | 1 |
3 files changed, 104 insertions, 6 deletions
diff --git a/net/stream.c b/net/stream.c index e4388fe7e4..884f473018 100644 --- a/net/stream.c +++ b/net/stream.c @@ -235,7 +235,7 @@ static NetStreamState *net_stream_fd_init(NetClientState *peer, static void net_stream_accept(void *opaque) { NetStreamState *s = opaque; - struct sockaddr_in saddr; + struct sockaddr_storage saddr; socklen_t len; int fd; @@ -253,8 +253,26 @@ static void net_stream_accept(void *opaque) s->fd = fd; s->nc.link_down = false; net_stream_connect(s); - qemu_set_info_str(&s->nc, "connection from %s:%d", - inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port)); + switch (saddr.ss_family) { + case AF_INET: { + struct sockaddr_in *saddr_in = (struct sockaddr_in *)&saddr; + + qemu_set_info_str(&s->nc, "connection from %s:%d", + inet_ntoa(saddr_in->sin_addr), + ntohs(saddr_in->sin_port)); + break; + } + case AF_UNIX: { + struct sockaddr_un saddr_un; + + len = sizeof(saddr_un); + getsockname(s->listen_fd, (struct sockaddr *)&saddr_un, &len); + qemu_set_info_str(&s->nc, "connect from %s", saddr_un.sun_path); + break; + } + default: + g_assert_not_reached(); + } } static int net_stream_server_init(NetClientState *peer, @@ -294,6 +312,43 @@ static int net_stream_server_init(NetClientState *peer, } break; } + case SOCKET_ADDRESS_TYPE_UNIX: { + struct sockaddr_un saddr_un; + + ret = unlink(addr->u.q_unix.path); + if (ret < 0 && errno != ENOENT) { + error_setg_errno(errp, errno, "failed to unlink socket %s", + addr->u.q_unix.path); + return -1; + } + + saddr_un.sun_family = PF_UNIX; + ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s", + addr->u.q_unix.path); + if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + addr->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(saddr_un.sun_path)); + return -1; + } + + fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create stream socket"); + return -1; + } + qemu_socket_set_nonblock(fd); + + ret = bind(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un)); + if (ret < 0) { + error_setg_errno(errp, errno, "can't create socket with path: %s", + saddr_un.sun_path); + closesocket(fd); + return -1; + } + break; + } case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); if (fd == -1) { @@ -337,6 +392,7 @@ static int net_stream_client_init(NetClientState *peer, { NetStreamState *s; struct sockaddr_in saddr_in; + struct sockaddr_un saddr_un; int fd, connected, ret; switch (addr->type) { @@ -373,6 +429,45 @@ static int net_stream_client_init(NetClientState *peer, } } break; + case SOCKET_ADDRESS_TYPE_UNIX: + saddr_un.sun_family = PF_UNIX; + ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s", + addr->u.q_unix.path); + if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) { + error_setg(errp, "UNIX socket path '%s' is too long", + addr->u.q_unix.path); + error_append_hint(errp, "Path must be less than %zu bytes\n", + sizeof(saddr_un.sun_path)); + return -1; + } + + fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0); + if (fd < 0) { + error_setg_errno(errp, errno, "can't create stream socket"); + return -1; + } + qemu_socket_set_nonblock(fd); + + connected = 0; + for (;;) { + ret = connect(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un)); + if (ret < 0) { + if (errno == EINTR || errno == EWOULDBLOCK) { + /* continue */ + } else if (errno == EAGAIN || + errno == EALREADY) { + break; + } else { + error_setg_errno(errp, errno, "can't connect socket"); + closesocket(fd); + return -1; + } + } else { + connected = 1; + break; + } + } + break; case SOCKET_ADDRESS_TYPE_FD: fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp); if (fd == -1) { @@ -387,7 +482,7 @@ static int net_stream_client_init(NetClientState *peer, connected = 1; break; default: - error_setg(errp, "only support inet or fd type"); + error_setg(errp, "only support inet, unix or fd type"); return -1; } @@ -399,13 +494,15 @@ static int net_stream_client_init(NetClientState *peer, inet_ntoa(saddr_in.sin_addr), ntohs(saddr_in.sin_port)); break; + case SOCKET_ADDRESS_TYPE_UNIX: + qemu_set_info_str(&s->nc, " connect to %s", saddr_un.sun_path); + break; case SOCKET_ADDRESS_TYPE_FD: qemu_set_info_str(&s->nc, "connect to fd %d", fd); break; default: g_assert_not_reached(); } - return 0; } diff --git a/qapi/net.json b/qapi/net.json index d476d33c72..b4768ce62b 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -586,7 +586,7 @@ # or connect to (server=false) # @server: create server socket (default: false) # -# Only SocketAddress types 'inet' and 'fd' are supported. +# Only SocketAddress types 'unix', 'inet' and 'fd' are supported. # # Since: 7.2 ## diff --git a/qemu-options.hx b/qemu-options.hx index 01f2b92d6f..858f3dc738 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2773,6 +2773,7 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, " configure a network backend to connect to another network\n" " using an UDP tunnel\n" "-netdev stream,id=str[,server=on|off],addr.type=inet,addr.host=host,addr.port=port\n" + "-netdev stream,id=str[,server=on|off],addr.type=unix,addr.path=path\n" "-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=file-descriptor\n" " configure a network backend to connect to another network\n" " using a socket connection in stream mode.\n" |