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!
#
# Copyright (C) 2006 Laurent Bessard
#
# 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
#
from os.path import join as opj
CC = "SUB_CC"
PROG_CFLAGS = "SUB_PROG_CFLAGS"
EXE_CFLAGS = "SUB_EXE_CFLAGS"
OS_NAME = "SUB_OS_NAME"
ARCH_NAME = "SUB_ARCH_NAME"
PREFIX = "SUB_PREFIX"
TARGET = "SUB_TARGET"
CAN_DRIVER = "SUB_CAN_DRIVER"
TIMERS_DRIVER = "SUB_TIMERS_DRIVER"
def getCFLAGS(Cpth):
ipth = opj(Cpth, "include")
return PROG_CFLAGS + ' -I"' + ipth + '" -I"' + opj(ipth, TARGET) + '" -I"' + opj(ipth, CAN_DRIVER) + '" -I"' + opj(ipth,TIMERS_DRIVER) + '"'
def getLDFLAGS(Cpth):
return EXE_CFLAGS + ' "' + opj(Cpth,"src","libcanfestival.a") + '" "' + opj(Cpth,"drivers", TARGET, "libcanfestival_%s.a"%TARGET)+ '"'