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b7b03eb614
Allow multifd to open file-backed channels. This will be used when enabling the mapped-ram migration stream format which expects a seekable transport. The QIOChannel read and write methods will use the preadv/pwritev versions which don't update the file offset at each call so we can reuse the fd without re-opening for every channel. Contrary to the socket migration, the file migration doesn't need an asynchronous channel creation process, so expose multifd_channel_connect() and call it directly. Note that this is just setup code and multifd cannot yet make use of the file channels. Signed-off-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Peter Xu <peterx@redhat.com> Link: https://lore.kernel.org/r/20240229153017.2221-18-farosas@suse.de Signed-off-by: Peter Xu <peterx@redhat.com>
22 lines
740 B
C
22 lines
740 B
C
/*
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* Copyright (c) 2021-2023 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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#ifndef QEMU_MIGRATION_FILE_H
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#define QEMU_MIGRATION_FILE_H
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#include "qapi/qapi-types-migration.h"
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#include "io/task.h"
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#include "channel.h"
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void file_start_incoming_migration(FileMigrationArgs *file_args, Error **errp);
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void file_start_outgoing_migration(MigrationState *s,
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FileMigrationArgs *file_args, Error **errp);
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int file_parse_offset(char *filespec, uint64_t *offsetp, Error **errp);
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void file_cleanup_outgoing_migration(void);
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bool file_send_channel_create(gpointer opaque, Error **errp);
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#endif
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