migration: use QEMUFile for writing outgoing migration data

Second, drop the file descriptor indirection, and write directly to the
QEMUFile.

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/include/migration/migration.h b/include/migration/migration.h
index 1f8f305ac9..ae94706bdf 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -40,10 +40,6 @@ struct MigrationState
     QEMUFile *file;
     QEMUFile *migration_file;
 
-    int fd;
-    int (*get_error)(MigrationState *s);
-    int (*write)(MigrationState *s, const void *buff, size_t size);
-
     int state;
     MigrationParams params;
     int64_t total_time;