Signed-off-by: Laurent Vivier <lviv...@redhat.com>
Reviewed-by: Stefano Brivio <sbri...@redhat.com>
---
net/stream.c | 108 +++++++++++++++++++++++++++++++++++++++++++++---
qapi/net.json | 2 +-
qemu-options.hx | 1 +
3 files changed, 105 insertions(+), 6 deletions(-)
diff --git a/net/stream.c b/net/stream.c
index 3fb899df5d2d..02967c284efc 100644
--- a/net/stream.c
+++ b/net/stream.c
@@ -235,7 +235,7 @@ static NetStreamState
*net_stream_fd_init_stream(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;
@@ -253,9 +253,27 @@ static void net_stream_accept(void *opaque)
s->fd = fd;
s->nc.link_down = false;
net_stream_connect(s);
- snprintf(s->nc.info_str, sizeof(s->nc.info_str),
- "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;
+
+ snprintf(s->nc.info_str, sizeof(s->nc.info_str),
+ "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);
+ snprintf(s->nc.info_str, sizeof(s->nc.info_str),
+ "connect from %s", saddr_un.sun_path);
+ break;
+ }
+ default:
+ g_assert_not_reached();
+ }
}
static int net_stream_server_init(NetClientState *peer,
@@ -295,6 +313,43 @@ 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) {
@@ -380,6 +435,49 @@ static int net_stream_client_init(NetClientState *peer,
ntohs(saddr_in.sin_port));
break;
}
+ case SOCKET_ADDRESS_TYPE_UNIX: {
+ struct sockaddr_un saddr_un;
+
+ 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;
+ }
+ }
+ info_str = g_strdup_printf(" connect to %s", saddr_un.sun_path);
+ break;
+ }
case SOCKET_ADDRESS_TYPE_FD:
fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp);
if (fd == -1) {
@@ -395,7 +493,7 @@ static int net_stream_client_init(NetClientState *peer,
info_str = g_strdup_printf("connect to fd %d", fd);
break;
default:
- error_setg(errp, "only support inet or fd type");
+ error_setg(errp, "only support inet, unix or fd type");
return -1;
}
diff --git a/qapi/net.json b/qapi/net.json
index e02e8001a000..bb96701a49a7 100644
--- a/qapi/net.json
+++ b/qapi/net.json
@@ -583,7 +583,7 @@
# or connect to (server=false)
# @server: create server socket (default: true)
#
-# Only SocketAddress types 'inet' and 'fd' are supported.
+# Only SocketAddress types 'unix', 'inet' and 'fd' are supported.
#
# Since: 7.1
##
diff --git a/qemu-options.hx b/qemu-options.hx
index 8c765f345da8..7a34022ac651 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2735,6 +2735,7 @@ 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=h\n"
" configure a network backend to connect to another
network\n"
" using a socket connection in stream mode.\n"
--
2.37.3
