From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1chG3I-0006rF-40 for barebox@lists.infradead.org; Fri, 24 Feb 2017 13:36:53 +0000 From: Bastian Stender Date: Fri, 24 Feb 2017 14:36:27 +0100 Message-Id: <20170224133627.26495-1-bst@pengutronix.de> In-Reply-To: References: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v2] fbconsole: check cursor position before moving To: barebox@lists.infradead.org Cc: Bastian Stender Moving the cursor to x=2, y=2 with "\e[3;3H" on a 12x2 framebuffer console lead to a barebox crash while drawing the cursor. If the cursor position is out of bounds clip the cursor to the corresponding edge. Signed-off-by: Bastian Stender --- drivers/video/fbconsole.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbconsole.c b/drivers/video/fbconsole.c index 64f7d7364e..843a026ff6 100644 --- a/drivers/video/fbconsole.c +++ b/drivers/video/fbconsole.c @@ -264,10 +264,13 @@ static void fbc_parse_csi(struct fbc_priv *priv) return; case 'H': video_invertchar(priv, priv->x, priv->y); + pos = simple_strtoul(priv->csi, &end, 10); - priv->y = pos ? pos - 1 : 0; + priv->y = !pos ? 0 : pos < priv->rows ? pos - 1 : priv->rows - 1; + pos = simple_strtoul(end + 1, NULL, 10); - priv->x = pos ? pos - 1 : 0; + priv->x = !pos ? 0 : pos < priv->cols ? pos - 1 : priv->cols - 1; + video_invertchar(priv, priv->x, priv->y); case 'K': pos = simple_strtoul(priv->csi, &end, 10); -- 2.11.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox