Exemplos de p9pdu_vwritef em C++ (Cpp)

Exemplo n.º 1

static int
p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...)
{
    va_list ap;
    int ret;

    va_start(ap, fmt);
    ret = p9pdu_vwritef(pdu, proto_version, fmt, ap);
    va_end(ap);

    return ret;
}

Exemplo n.º 2

Arquivo: client.c Projeto: mpalmer/linux-2.6

static struct p9_req_t *
p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
{
	va_list ap;
	int tag, err;
	struct p9_req_t *req;
	unsigned long flags;
	int sigpending;
	int flushed = 0;

	P9_DPRINTK(P9_DEBUG_MUX, "client %p op %d\n", c, type);

	if (c->status != Connected)
		return ERR_PTR(-EIO);

	if (signal_pending(current)) {
		sigpending = 1;
		clear_thread_flag(TIF_SIGPENDING);
	} else
		sigpending = 0;

	tag = P9_NOTAG;
	if (type != P9_TVERSION) {
		tag = p9_idpool_get(c->tagpool);
		if (tag < 0)
			return ERR_PTR(-ENOMEM);
	}

	req = p9_tag_alloc(c, tag);
	if (IS_ERR(req))
		return req;

	/* marshall the data */
	p9pdu_prepare(req->tc, tag, type);
	va_start(ap, fmt);
	err = p9pdu_vwritef(req->tc, c->dotu, fmt, ap);
	va_end(ap);
	p9pdu_finalize(req->tc);

	err = c->trans_mod->request(c, req);
	if (err < 0) {
		c->status = Disconnected;
		goto reterr;
	}

	/* if it was a flush we just transmitted, return our tag */
	if (type == P9_TFLUSH)
		return req;
again:
	P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d\n", req->wq, tag);
	err = wait_event_interruptible(*req->wq,
						req->status >= REQ_STATUS_RCVD);
	P9_DPRINTK(P9_DEBUG_MUX, "wait %p tag: %d returned %d (flushed=%d)\n",
						req->wq, tag, err, flushed);

	if (req->status == REQ_STATUS_ERROR) {
		P9_DPRINTK(P9_DEBUG_ERROR, "req_status error %d\n", req->t_err);
		err = req->t_err;
	} else if (err == -ERESTARTSYS && flushed) {
		P9_DPRINTK(P9_DEBUG_MUX, "flushed - going again\n");
		goto again;
	} else if (req->status == REQ_STATUS_FLSHD) {
		P9_DPRINTK(P9_DEBUG_MUX, "flushed - erestartsys\n");
		err = -ERESTARTSYS;
	}

	if ((err == -ERESTARTSYS) && (c->status == Connected) && (!flushed)) {
		P9_DPRINTK(P9_DEBUG_MUX, "flushing\n");
		spin_lock_irqsave(&c->lock, flags);
		if (req->status == REQ_STATUS_SENT)
			req->status = REQ_STATUS_FLSH;
		spin_unlock_irqrestore(&c->lock, flags);
		sigpending = 1;
		flushed = 1;
		clear_thread_flag(TIF_SIGPENDING);

		if (c->trans_mod->cancel(c, req)) {
			err = p9_client_flush(c, req);
			if (err == 0)
				goto again;
		}
	}

	if (sigpending) {
		spin_lock_irqsave(&current->sighand->siglock, flags);
		recalc_sigpending();
		spin_unlock_irqrestore(&current->sighand->siglock, flags);
	}

	if (err < 0)
		goto reterr;

	err = p9_check_errors(c, req);
	if (!err) {
		P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d\n", c, type);
		return req;
	}

reterr:
	P9_DPRINTK(P9_DEBUG_MUX, "exit: client %p op %d error: %d\n", c, type,
									err);
	p9_free_req(c, req);
	return ERR_PTR(err);
}