Building truecrypt modules

categories:

• Howto
• Linux

You may need to rebuild the truecrypt module anytime there is a kernel update…

1. yum install kernel(-smp)-devel
2. wget http://download.fedora.redhat.com/pub/fedora/linux/core/updates/5/SRPMS/kernel-2.6.1(VERSION)_FC5.src.rpm

Optional for SMP : Edit /usr/src/redhat/SPECS/kernel-2.6.spec %define buildsmp 1

3. rpmbuild -bp –target=$(arch) kernel-2.6.spec (I use i686 as arch)
4. when done : cd BUILD/kernel-2.6.xx/linux-2.6.xx
5. cp configs/kernel-2.6.xx-$(arch)-(smp).config .config

This is a list of available config files : [root@localhost configs]# ll total 544 -rw-r--r-- 1 root root 61336 Aug 14 20:45 kernel-2.6.17-i586.config -rw-r--r-- 1 root root 58562 Aug 14 20:45 kernel-2.6.17-i586-smp.config -rw-r--r-- 1 root root 65979 Aug 14 20:46 kernel-2.6.17-i686.config -rw-r--r-- 1 root root 66038 Aug 14 20:46 kernel-2.6.17-i686-kdump.config -rw-r--r-- 1 root root 65997 Aug 14 20:46 kernel-2.6.17-i686-smp.config -rw-r--r-- 1 root root 61792 Aug 14 20:46 kernel-2.6.17-i686-xen0.config -rw-r--r-- 1 root root 61840 Aug 14 20:46 kernel-2.6.17-i686-xen.config -rw-r--r-- 1 root root 29296 Aug 14 20:46 kernel-2.6.17-i686-xenU.config

6. vi Makefile

Edit the line EXTRAVERSION to match your system :

EXTRAVERSION = -1.2157_FC5smp

7. make oldconfig

8. when done : mv /usr/src/redhat/BUILD/kernel-2.6.VERSION/linux-2.6.VERSION.i686 /usr/src/kernels

9. ln -s /usr/src/kernels/kernel-2.6.VERSION /usr/src/linux

10. grab and unpack truecrypt sources

11. execute ./Linux/build.sh (this will take some time)

12. when done : cp ./Kernel/truecrypt.ko /usr/share/truecrypt/kernel/truecrypt-2.6.VERSION.ko

You’re done.