# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils toolchain-funcs

DESCRIPTION="Free open-source disk encryption software for Windows XP/2000/2003 and Linux"
HOMEPAGE="http://www.truecrypt.org/"
SRC_URI="http://www.truecrypt.org/downloads/truecrypt-${PV}-source-code.tar.gz"

LICENSE="truecrypt"
SLOT="0"
KEYWORDS="~x86"
IUSE=""

DEPEND="virtual/linux-sources
	>=sys-fs/device-mapper-1.00.08"

RDEPEND="sys-apps/module-init-tools
	>=sys-fs/device-mapper-1.00.08"

src_unpack() {
	unpack ${A}
	cd ${S}
	epatch ${FILESDIR}/${P}-head.patch
}

src_compile() {
	ARCH=$(tc-arch-kernel)
	cd ${S}/Linux
	sh build.sh || die "build failed"
}

src_test() {
	${S}/Linux/Cli/truecrypt --test
}

src_install() {
	# unload truecrypt modules if already loaded
	/sbin/rmmod truecrypt >&- 2>&-
	if grep -q "^truecrypt" /proc/modules
	then 
		die "Please dismount all mounted TrueCrypt volumes"
	fi
	
	cd ${S}
	# installing files	
	dobin Linux/Cli/truecrypt
	doman Linux/Cli/Man/truecrypt.1
	dodoc Readme.txt

	# installing kernel module
	MOD_DIR=/lib/modules/$(uname -r)/extra
	dodir ${MOD_DIR}
	fperms 600 Linux/Kernel/truecrypt.ko
	cp Linux/Kernel/truecrypt.ko ${D}/${MOD_DIR}/ || die "Install failed!"
	
}

pkg_postinst() {
	depmod || die "depmod failed"
	
	echo
	einfo " For TrueCrypt 4.0 to work you have to load a "
	einfo " kernel module. This can be done in three ways: "
	einfo 
	einfo " 1. Loading the module automatically by the running kernel. "
	einfo "    For this 'Automatic kernel module loading' needs to be "
	einfo "    enabled (CONFIG_KMOD=y). "
	einfo " 2. Loading the module manually before mounting the volume. "
	einfo "    Try 'modprobe truecrypt' as root to load the module. "
	einfo " 3. Load the module during boot by listing it in "
	einfo "    '/etc/modules.autoload.d/kernel-2.6' "
}