From: ppisa <ppisa>
Date: Thu, 4 Mar 2004 18:38:59 +0000 (+0000)
Subject: Missing file added.
X-Git-Tag: CLT_COMM_CAN-lincan-0_2-040304
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/commitdiff_plain/784257fe99509a96d12624ffc3ed8c9bdc465ed8

Missing file added.
---

diff --git a/lincan/src/ioctl_query.c b/lincan/src/ioctl_query.c
new file mode 100644
index 0000000..f562741
--- /dev/null
+++ b/lincan/src/ioctl_query.c
@@ -0,0 +1,46 @@
+/* ioctl_query.c
+ * Linux CAN-bus device driver.
+ * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
+ * This software is released under the GPL-License.
+ * Version lincan-0.2  9 Jul 2003
+ */
+
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
+#include "../include/main.h"
+#include "../include/ioctl.h"
+
+
+/**
+ * can_ioctl_query - query for driver version and features
+ * @canuser: pointer to the user/client state structure
+ * @what:    select which feature or version is queried
+ *
+ * Return Value: returns value for queried characteristic or -EINVAL
+ *	if there is no reply to the query.
+ */
+
+int can_ioctl_query(struct canuser_t *canuser, unsigned long what)
+{
+	switch(what){
+		case CAN_DRV_QRY_BRANCH:
+			/* returns driver branch value - "LINC" for LinCAN driver */
+			return CAN_DRV_BRANCH;
+
+		case CAN_DRV_QRY_VERSION:
+			/* returns driver version as (major<<16) | (minor<<8) | patch */
+			return CAN_DRV_VER;
+
+		case CAN_DRV_QRY_MSGFORMAT:
+			/* format of canmsg_t structure */
+			#ifdef CAN_MSG_VERSION_2
+			  return 2;
+			#else /*CAN_MSG_VERSION_2*/
+			  return 1;
+			#endif /*CAN_MSG_VERSION_2*/
+	}
+
+	return -EINVAL;
+}