static void coroutine_fn pdu_complete(V9fsPDU *pdu, ssize_t len) { int8_t id = pdu->id + 1; /* Response */ V9fsState *s = pdu->s; if (len < 0) { int err = -len; len = 7; if (s->proto_version != V9FS_PROTO_2000L) { V9fsString str; str.data = strerror(err); str.size = strlen(str.data); len += pdu_marshal(pdu, len, "s", &str); id = P9_RERROR; } len += pdu_marshal(pdu, len, "d", err); if (s->proto_version == V9FS_PROTO_2000L) { id = P9_RLERROR; } trace_v9fs_rerror(pdu->tag, pdu->id, err); /* Trace ERROR */ } /* fill out the header */ pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); /* keep these in sync */ pdu->size = len; pdu->id = id; pdu_push_and_notify(pdu); /* Now wakeup anybody waiting in flush for this request */ qemu_co_queue_next(&pdu->complete); pdu_free(pdu); }