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8f87c87eca
Extend cpr_transfer_input to handle SOCKET_ADDRESS_TYPE_FD alongside SOCKET_ADDRESS_TYPE_UNIX. This change supports the use of pre-listened socket file descriptors for cpr migration channels. This change is particularly useful in qtest environments, where the socket may be created externally and passed via fd. Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com> Reviewed-by: Steve Sistare <steven.sistare@oracle.com> Signed-off-by: Jaehoon Kim <jhkim@linux.ibm.com> Link: https://lore.kernel.org/r/20250611205610.147008-3-jhkim@linux.ibm.com Signed-off-by: Peter Xu <peterx@redhat.com>
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* Copyright (c) 2022, 2024 Oracle and/or its affiliates.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "io/channel-file.h"
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#include "io/channel-socket.h"
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#include "io/net-listener.h"
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#include "migration/cpr.h"
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#include "migration/migration.h"
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#include "migration/savevm.h"
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#include "migration/qemu-file.h"
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#include "migration/vmstate.h"
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#include "trace.h"
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QEMUFile *cpr_transfer_output(MigrationChannel *channel, Error **errp)
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{
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MigrationAddress *addr = channel->addr;
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if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET &&
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addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX) {
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g_autoptr(QIOChannelSocket) sioc = qio_channel_socket_new();
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QIOChannel *ioc = QIO_CHANNEL(sioc);
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SocketAddress *saddr = &addr->u.socket;
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if (qio_channel_socket_connect_sync(sioc, saddr, errp) < 0) {
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return NULL;
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}
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trace_cpr_transfer_output(addr->u.socket.u.q_unix.path);
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qio_channel_set_name(ioc, "cpr-out");
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return qemu_file_new_output(ioc);
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} else {
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error_setg(errp, "bad cpr channel address; must be unix");
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return NULL;
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}
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}
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QEMUFile *cpr_transfer_input(MigrationChannel *channel, Error **errp)
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{
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MigrationAddress *addr = channel->addr;
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if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET &&
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(addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX ||
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addr->u.socket.type == SOCKET_ADDRESS_TYPE_FD)) {
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g_autoptr(QIOChannelSocket) sioc = NULL;
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SocketAddress *saddr = &addr->u.socket;
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g_autoptr(QIONetListener) listener = qio_net_listener_new();
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QIOChannel *ioc;
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qio_net_listener_set_name(listener, "cpr-socket-listener");
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if (qio_net_listener_open_sync(listener, saddr, 1, errp) < 0) {
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return NULL;
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}
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sioc = qio_net_listener_wait_client(listener);
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ioc = QIO_CHANNEL(sioc);
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trace_cpr_transfer_input(
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addr->u.socket.type == SOCKET_ADDRESS_TYPE_UNIX ?
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addr->u.socket.u.q_unix.path : addr->u.socket.u.fd.str);
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qio_channel_set_name(ioc, "cpr-in");
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return qemu_file_new_input(ioc);
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} else {
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error_setg(errp, "bad cpr channel socket type; must be unix");
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return NULL;
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}
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}
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