static int migration_put_buffer(void *opaque, const uint8_t *buf, int64_t pos, int size) { MigrationState *s = opaque; int ret; DPRINTF("putting %d bytes at %" PRId64 "\n", size, pos); if (size <= 0) { return size; } qemu_put_buffer(s->migration_file, buf, size); ret = qemu_file_get_error(s->migration_file); if (ret) { return ret; } s->bytes_xfer += size; return size; }