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Commit 7b5c806c authored by Rusty Russell's avatar Rusty Russell
Browse files

lguest: fix writev returning short on console output 



I've never seen it here, but I can't find anywhere that says writev
will write everything.

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent e606490c

Documentation/lguest/lguest.c

+6 −1
Original line number Diff line number Diff line
@@ -836,7 +836,12 @@ static void handle_console_output(struct virtqueue *vq, bool timeout) 
	while ((head = get_vq_desc(vq, iov, &out, &in)) != vq->vring.num) {

		if (in)

			errx(1, "Input buffers in output queue?");

		writev(STDOUT_FILENO, iov, out);

		while (!iov_empty(iov, out)) {

			int len = writev(STDOUT_FILENO, iov, out);

			if (len <= 0)

				err(1, "Write to stdout gave %i", len);

			iov_consume(iov, out, len);

		}

		add_used_and_trigger(vq, head, 0);

	}

}