socket: Make errp the last parameter of socket_connect

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170421122710.15373-2-famz@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

block/sheepdog.c

@@ -595,7 +595,7 @@ static int connect_to_sdog(BDRVSheepdogState *s, Error **errp)
 {
     int fd;
 
-    fd = socket_connect(s->addr, errp, NULL, NULL);
+    fd = socket_connect(s->addr, NULL, NULL, errp);
 
     if (s->addr->type == SOCKET_ADDRESS_KIND_INET && fd >= 0) {
         int ret = socket_set_nodelay(fd);

include/qemu/sockets.h

@@ -45,8 +45,8 @@ int unix_listen(const char *path, char *ostr, int olen, Error **errp);
 int unix_connect(const char *path, Error **errp);
 
 SocketAddress *socket_parse(const char *str, Error **errp);
-int socket_connect(SocketAddress *addr, Error **errp,
-                   NonBlockingConnectHandler *callback, void *opaque);
+int socket_connect(SocketAddress *addr, NonBlockingConnectHandler *callback,
+                   void *opaque, Error **errp);
 int socket_listen(SocketAddress *addr, Error **errp);
 void socket_listen_cleanup(int fd, Error **errp);
 int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp);

io/channel-socket.c

@@ -140,7 +140,7 @@ int qio_channel_socket_connect_sync(QIOChannelSocket *ioc,
     int fd;
 
     trace_qio_channel_socket_connect_sync(ioc, addr);
-    fd = socket_connect(addr, errp, NULL, NULL);
+    fd = socket_connect(addr, NULL, NULL, errp);
     if (fd < 0) {
         trace_qio_channel_socket_connect_fail(ioc);
         return -1;

net/socket.c

@@ -578,7 +578,7 @@ static int net_socket_connect_init(NetClientState *peer,
         goto err;
     }
 
-    fd = socket_connect(c->saddr, &local_error, net_socket_connected, c);
+    fd = socket_connect(c->saddr, net_socket_connected, c, &local_error);
     if (fd < 0) {
         goto err;
     }

util/qemu-sockets.c

@@ -1074,8 +1074,8 @@ fail:
     return NULL;
 }
 
-int socket_connect(SocketAddress *addr, Error **errp,
-                   NonBlockingConnectHandler *callback, void *opaque)
+int socket_connect(SocketAddress *addr, NonBlockingConnectHandler *callback,
+                   void *opaque, Error **errp)
 {
     int fd;