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 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 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 51 g_autoptr(QIOChannelSocket) sioc = NULL; 52 SocketAddress *saddr = &addr->u.socket; 53 g_autoptr(QIONetListener) listener = qio_net_listener_new(); 54 QIOChannel *ioc; 55 56 qio_net_listener_set_name(listener, "cpr-socket-listener"); 57 if (qio_net_listener_open_sync(listener, saddr, 1, errp) < 0) { 58 return NULL; 59 } 60 61 sioc = qio_net_listener_wait_client(listener); 62 ioc = QIO_CHANNEL(sioc); 63 trace_cpr_transfer_input(addr->u.socket.u.q_unix.path); 64 qio_channel_set_name(ioc, "cpr-in"); 65 return qemu_file_new_input(ioc); 66 67 } else { 68 error_setg(errp, "bad cpr channel socket type; must be unix"); 69 return NULL; 70 } 71 } 72