Dan Langille wrote:
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> Mark Wright wrote:
>   
>> I am using Ubuntu 8.10 Desktop (tried both 32-bit and 64-bit versions) 
>> and liferay 2.4.4. I used the following procedure to create the bat module:
>>
>>     *
>>       *remove qt3* (if installed)
>>           o
>>
>>             sudo apt-get --purge remove qt3-dev-tools qt3-designer libqwt-dev
>>
>>     *
>>       *install qt4*
>>           o
>>
>>             sudo apt-get install qt4-dev-tools qt4-qtconfig  libqt4-core 
>> libqt4-dev
>>
>>     *
>>       *install qwt*
>>           o
>>
>>             apt-get install libqwt5-qt4 libqwt5-qt4-dev
>>
>>           o
>>             make sure, that under /usr/lib the libqwt.so links to
>>             libqwt-qt4.so.5, if not create a symlink.
>>           o
>>
>>             cd /usr/lib
>>             sudo ln -s libqwt-qt4.so.5 libqwt.so
>>
>>     *
>>       configure
>>           o
>>
>>             ./configure --enable-bat --enable-client-only 
>> --with-qwt=/usr/lib/
>>
>>           o
>>             The result of the succesfull configure should show these lines:
>>                 +
>>
>>                     bat support:                yes -L/usr/lib64
>>                     client-only:                yes
>>
>>     *
>>       proceed to make
>>           o
>>
>>             make
>>
>>     *
>>       install bat
>>           o
>>
>>             sudo cp src/qt-console/bat /usr/sbin/
>>
>>           o
>>
>>             sudo cp src/qt-console/bat.conf /etc/bacula/
>>
>>     *
>>       start it
>>           o
>>
>>             bat -d99 -c /etc/bacula/bat.conf
>>
>> When I run it I get a
>> *** buffer overflow detected ***: bat terminated
>> ====== Backtrace: ======
>> /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[oxb727d6d8]
>> /lib/tls/i686/cmov/libc.so.6[0xb727b800]
>> bat[0x8116d8c]
>> bat[ox8055c7d]
>> /lib/tls/i686/cmov/libc.so.6(__livc_start_main+0xe5)[0xb7199685]
>> bat[0x80555b1]
>>     
>
> Is this a case of compiling with options to check for buffer overflow?
>
> Please search the archives for bat and buffer overflow.  Your answer may
> be there.  I seem to recall that some distros insist upon compile
> options that are simply wrong.
>
> - --
> Dan Langille
>
> BSDCan - The Technical BSD Conference : http://www.bsdcan.org/
> PGCon  - The PostgreSQL Conference:     http://www.pgcon.org/
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>   
Thanks for the response. The only info I could find seemed to have to do 
with setting the D_FORTIFY_SOURCE as part of the CFLAGS. I tried using 
-D_FORTIFY_SOURCE=0, -D_FORTIFY_SOURCE=2 and -D_FORTIFY_SOURCE=3D0, but 
I got the same results. I have to admit that I really don't understand 
what the settings do, but I could not find any other information on how 
I might set those. I also found the following information, although I 
could not figure out how to use it in Ubuntu:

To avoid this problem a workaround for Redhat platforms is to set the 
CFLAGS in your ~/.rpmmacros file as follows:

# uncomment for bacula #%__global_cflags -O2 -g -pipe -Wall 
-Wp,-D_FORTIFY_SOURCE=0 -fno-exceptions -fno-strict-aliasing -fno-rtti

For SuSE platforms set as follows in your ~/.rpmrc file:

optflags: i586 -O2 -g -m32 -march=i586 -mtune=i686 -fmessage-length=0 
-D_FORTIFY_SOURCE=0 optflags: x86_64 -O2 -g -fmessage-length=0 
-D_FORTIFY_SOURCE=0



-- 
*Mark Wright*
Chief Technology Officer
Web: redesetgrow.com <http://www.redesetgrow.com/>
Email: mwright AT redesetgrow DOT com <mailto:mwright AT redesetgrow DOT com>
Phone: (888) 386-3822

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