patch from Stefan Kratochwil <entwicklung@inovel.de> : canfestival-3-fm3_698.patch
Bug:
If an object dictionary entry was requested whose size exceeds
SDO_MAX_LENGTH_TRANSFERT, the memcpy() call at line 139 of objacces.c overwrites
the memory after *pDestData which causes stack corruption.
-> Bugfix:
The bug was corrected by size checking the requested data. An 'Out of
memory' error message will be generated if the requested data exceeds
SDO_MAX_LENGTH_TRANSFERT.
Additional changes:
Added dynamic buffer allocation for the SDO transfer. This feature can be used
if SDO_DYNAMIC_BUFFER_ALLOCATION is defined in config.h. The size of the
dynamically allocated buffer is controlled with
SDO_DYNAMIC_BUFFER_ALLOCATION_SIZE.
-> Note:
This change removes the detection of OD_LENGTH_DATA_INVALID errors!
#! gmake
#
# Copyright (C) 2010 Cosateq GmbH & Co.KG
# http://www.cosateq.com/
# http://www.scale-rt.com/
#
# This file is part of canfestival, a library implementing the canopen
# stack
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
CC = SUB_CC
OPT_CFLAGS = -O2
CFLAGS = SUB_OPT_CFLAGS
PROG_CFLAGS = SUB_PROG_CFLAGS
PREFIX = SUB_PREFIX
TARGET = SUB_TARGET
CAN_DRIVER = SUB_CAN_DRIVER
TIMERS_DRIVER = SUB_TIMERS_DRIVER
ENABLE_DLL_DRIVERS=SUB_ENABLE_DLL_DRIVERS
CAN_DLL_CFLAGS=SUB_CAN_DLL_CFLAGS
INCLUDES = -I../../include -I../../include/$(TARGET) -I../../include/$(CAN_DRIVER)
OBJS = $(CAN_DRIVER).o
ifeq ($(ENABLE_DLL_DRIVERS),1)
CFLAGS += -fPIC
DRIVER = libcanfestival_$(CAN_DRIVER).so
else
DRIVER = $(OBJS)
endif
TARGET_SOFILES = $(PREFIX)/lib/$(DRIVER)
all: driver
driver: $(DRIVER)
%.o: %.c
$(CC) $(CFLAGS) $(PROG_CFLAGS) ${PROGDEFINES} $(INCLUDES) -o $@ -c $<
libcanfestival_$(CAN_DRIVER).so: $(OBJS)
$(CC) -shared -Wl,-soname,libcanfestival_$(CAN_DRIVER).so $(CAN_DLL_CFLAGS) -o $@ $<
install: libcanfestival_$(CAN_DRIVER).so
mkdir -p $(PREFIX)/lib/
cp $< $(PREFIX)/lib/
uninstall:
rm -f $(TARGET_SOFILES)
clean:
rm -f $(OBJS)
mrproper: clean