-/* ioctl.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-0.3 17 Jun 2004
- */
+/**************************************************************************/
+/* File: ioctl.c - CAN driver IOCTL functions support */
+/* */
+/* LinCAN - (Not only) Linux CAN bus driver */
+/* Copyright (C) 2002-2009 DCE FEE CTU Prague <http://dce.felk.cvut.cz> */
+/* Copyright (C) 2002-2009 Pavel Pisa <pisa@cmp.felk.cvut.cz> */
+/* Funded by OCERA and FRESCOR IST projects */
+/* Based on CAN driver code by Arnaud Westenberg <arnaud@wanadoo.nl> */
+/* */
+/* LinCAN is free software; you can redistribute it and/or modify it */
+/* under terms of the GNU General Public License as published by the */
+/* Free Software Foundation; either version 2, or (at your option) any */
+/* later version. LinCAN is distributed in the hope that it will be */
+/* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */
+/* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
+/* General Public License for more details. You should have received a */
+/* copy of the GNU General Public License along with LinCAN; see file */
+/* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */
+/* Cambridge, MA 02139, USA. */
+/* */
+/* To allow use of LinCAN in the compact embedded systems firmware */
+/* and RT-executives (RTEMS for example), main authors agree with next */
+/* special exception: */
+/* */
+/* Including LinCAN header files in a file, instantiating LinCAN generics */
+/* or templates, or linking other files with LinCAN objects to produce */
+/* an application image/executable, does not by itself cause the */
+/* resulting application image/executable to be covered by */
+/* the GNU General Public License. */
+/* This exception does not however invalidate any other reasons */
+/* why the executable file might be covered by the GNU Public License. */
+/* Publication of enhanced or derived LinCAN files is required although. */
+/**************************************************************************/
#include "../include/can.h"
#include "../include/can_sysdep.h"
#include "../include/main.h"
#include "../include/ioctl.h"
-#include "../include/i82527.h"
int can_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
case CANQUE_FILTER: {
struct canfilt_t canfilt;
- copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
+ int ret;
+ ret = copy_from_user(&canfilt, (void*)arg, sizeof(struct canfilt_t));
+ if(ret) return -EFAULT;
if(canuser->rx_edge0){
canque_set_filt(canuser->rx_edge0, canfilt.id, canfilt.mask, canfilt.flags);
}
int ret;
struct canmsg_t rtr_msg;
- copy_from_user(&rtr_msg, (void*)arg, sizeof(struct canmsg_t));
+ ret = copy_from_user(&rtr_msg, (void*)arg, sizeof(struct canmsg_t));
+ if(ret) return -EFAULT;
ret = can_ioctl_remote_read(canuser, &rtr_msg, rtr_msg.id, 0);
if(ret<0) return ret;
- copy_to_user((void*)arg, &rtr_msg, sizeof(struct canmsg_t));
+ ret = copy_to_user((void*)arg, &rtr_msg, sizeof(struct canmsg_t));
+ if(ret) return -EFAULT;
break;
}
case CONF_BAUDPARAMS: {
struct can_baudparams_t params;
- copy_from_user(¶ms, (void*)arg, sizeof(struct can_baudparams_t));
+ int ret;
+
+ ret = copy_from_user(¶ms, (void*)arg, sizeof(struct can_baudparams_t));
+ if(ret) return -EFAULT;
+
if(params.flags == -1) params.flags = 0;
if(params.baudrate == -1) params.baudrate = chip->baudrate;
if(params.sjw == -1) params.sjw = 0;