1 /*
2 * Copyright (c) 2022, 2024 Oracle and/or its affiliates.
3 *
4 * This work is licensed under the terms of the GNU GPL, version 2 or later.
5 * See the COPYING file in the top-level directory.
6 */
7
8 #include "qemu/osdep.h"
9 #include "qapi/error.h"
10 #include "io/channel-file.h"
11 #include "io/channel-socket.h"
12 #include "io/net-listener.h"
13 #include "migration/cpr.h"
14 #include "migration/migration.h"
15 #include "migration/savevm.h"
16 #include "migration/qemu-file.h"
17 #include "migration/vmstate.h"
18 #include "trace.h"
19
cpr_transfer_output(MigrationChannel * channel,Error ** errp)20 QEMUFile *cpr_transfer_output(MigrationChannel *channel, Error **errp)
21 {
22 MigrationAddress *addr = channel->addr;
23
24 if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET &&
25 addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX) {
26
27 g_autoptr(QIOChannelSocket) sioc = qio_channel_socket_new();
28 QIOChannel *ioc = QIO_CHANNEL(sioc);
29 SocketAddress *saddr = &addr->u.socket;
30
31 if (qio_channel_socket_connect_sync(sioc, saddr, errp) < 0) {
32 return NULL;
33 }
34 trace_cpr_transfer_output(addr->u.socket.u.q_unix.path);
35 qio_channel_set_name(ioc, "cpr-out");
36 return qemu_file_new_output(ioc);
37
38 } else {
39 error_setg(errp, "bad cpr channel address; must be unix");
40 return NULL;
41 }
42 }
43
cpr_transfer_input(MigrationChannel * channel,Error ** errp)44 QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp)
45 {
46 MigrationAddress *addr = channel->addr;
47
48 if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET &&
49 (addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX ||
50 addr->u.socket.type == SOCKET_ADDRESS_TYPE_FD)) {
51
52 g_autoptr(QIOChannelSocket) sioc = NULL;
53 SocketAddress *saddr = &addr->u.socket;
54 g_autoptr(QIONetListener) listener = qio_net_listener_new();
55 QIOChannel *ioc;
56
57 qio_net_listener_set_name(listener, "cpr-socket-listener");
58 if (qio_net_listener_open_sync(listener, saddr, 1, errp) < 0) {
59 return NULL;
60 }
61
62 sioc = qio_net_listener_wait_client(listener);
63 ioc = QIO_CHANNEL(sioc);
64 trace_cpr_transfer_input(
65 addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX ?
66 addr->u.socket.u.q_unix.path : addr->u.socket.u.fd.str);
67 qio_channel_set_name(ioc, "cpr-in");
68 return qemu_file_new_input(ioc);
69
70 } else {
71 error_setg(errp, "bad cpr channel socket type; must be unix");
72 return NULL;
73 }
74 }
75