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# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
inherit eutils linux-mod
DESCRIPTION="An entirely re-designed and re-implemented Unionfs."
HOMEPAGE="http://aufs.sourceforge.net/"
SRC_URI="http://dev.gentooexperimental.org/~tommy/distfiles/${P}.tar.bz2"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="debug fuse hinotify nfs nfsexport robr sec_perm"
S="${WORKDIR}"/aufs
MODULE_NAMES="aufs(misc:${S})"
pkg_setup() {
# kernel version check
if kernel_is lt 2 6 16 ; then
eerror "${PN} is being developed and tested on linux-2.6.16 and later."
eerror "Make sure you have a proper kernel version!"
die "Wrong kernel version"
fi
get_version
# assume no kernel patches will be applied today
APPLY_KERNEL_PATCH="n"
# Check if sec_perm patch needs to be applied
if kernel_is ge 2 6 24 && linux_chkconfig_present "SECURITY" ; then
APPLY_SEC_PERM_PATCH="n"
if ! grep -qs "EXPORT_SYMBOL(security_inode_permission);" "${KV_DIR}/security/security.c" ; then
APPLY_SEC_PERM_PATCH="y"
APPLY_KERNEL_PATCH="y"
fi
# make sure the user is allowing this to happen
if [[ APPLY_SEC_PERM_PATCH = "y" ]] && ! use sec_perm; then
eerror "${PN} requires that all kernels with CONFIG_SECURITY enabled >= 2.6.24"
eerror "be patched. Please enable USE=\"sec_perm\" to allow this patch to be"
eerror "applied."
die "Invalid configuration"
fi
# Also check to make sure they aren't enabling it when they don't need to
else
if use sec_perm ; then
eerror "${PN} does not require the sec_perm patch to be applied to your kernel."
eerror "Please disabe the sec_perm USE flag: USE=\"-sec_perm\"."
die "Invalid configuration"
fi
fi
# Check for applicability of lhash patch for NFS branch support
# Check if lhash Patch has to be applied
if use nfs && kernel_is ge 2 6 19 ; then
APPLY_LHASH_PATCH="n"
# If lhash patch is not applied
if ! grep -qs "EXPORT_SYMBOL(__lookup_hash);" "${KV_DIR}/fs/namei.c" \
&& ! grep -qs "struct dentry * __lookup_hash(struct qstr *name, struct dentry * base, struct nameidata *nd);" "${KV_DIR}/fs/namei.h" ; then
APPLY_LHASH_PATCH="y"
APPLY_KERNEL_PATCH="y"
fi
fi
# If a patch has to be applied
if [[ ${APPLY_KERNEL_PATCH} == "y" ]] ; then
ewarn "Patching your kernel..."
cd ${KV_DIR}
# If the sec_perm patch has to be applied
if [[ ${APPLY_SEC_PERM_PATCH} == "y" ]] ; then
epatch "${FILESDIR}"/${PN}-20081208-sec_perm-2.6.24.patch
fi
# if the lhash patch has to be applied
if [[ ${APPLY_LHASH_PATCH} == "y" ]] ; then
if kernel_is ge 2 6 24 ; then
epatch "${FILESDIR}"/${PN}-lhash-2.6.24.patch
else
if kernel_is ge 2 6 22 ; then
epatch "${FILESDIR}"/${PN}-lhash-2.6.22.patch
else
epatch "${FILESDIR}"/${PN}-lhash-2.6.19.patch
fi
fi
fi
fi
linux-mod_pkg_setup
}
src_unpack(){
unpack ${A}
cd "${S}"
# Enable hinotify in priv_def.mk
if use hinotify && kernel_is ge 2 6 18 ; then
echo "CONFIG_AUFS_HINOTIFY = y" >> priv_def.mk || die "setting hinotify in priv_def.mk failed!"
fi
# Disable SYSAUFS for kernel less than 2.6.18
if kernel_is lt 2 6 18 ; then
echo "CONFIG_AUFS_SYSAUFS = " >> priv_def.mk || die "unsetting sysaufs in priv_def.mk failed!"
fi
# Enable nfsexport in priv_def.mk
if use nfsexport && kernel_is ge 2 6 18 ; then
echo "CONFIG_AUFS_EXPORT = y" >> priv_def.mk || die "setting export in priv_def.mk failed!"
fi
# Enable lhash Patch in priv_def.mk
if use nfs && kernel_is ge 2 6 19 ; then
echo "CONFIG_AUFS_LHASH_PATCH = y" >> priv_def.mk || die "setting lhash in priv_def.mk failed!"
fi
# Enable aufs readonly-branch in priv_def.mk
if use robr ; then
echo "CONFIG_AUFS_ROBR = y" >> priv_def.mk || die "setting robr in priv_def.mk failed!"
fi
# Enable FUSE workaround for AUFS
if use fuse ; then
echo "CONFIG_AUFS_WORKAROUND_FUSE = y" >> priv_def.mk || die "setting workaround_fuse in priv_def.mk failed!"
fi
# Enable / Disable debugging
if use debug ; then
echo "CONFIG_AUFS_DEBUG = y" >> priv_def.mk || die "setting debug in priv_dev.mk failed!"
else
echo "CONFIG_AUFS_DEBUG = " >> priv_def.mk || die "setting debug in priv_dev.mk failed!"
fi
# Check if a vserver-kernel is installed
if [[ -e ${KV_DIR}/include/linux/vserver ]] ; then
einfo "vserver kernel seems to be installed"
einfo "using vserver patch"
echo "AUFS_DEF_CONFIG = -DVSERVER" >> priv_def.mk || die "setting vserver in priv_def.mk failed!"
fi
}
src_compile() {
use x86 && ARCH=i386
use amd64 && ARCH=x86_64
emake KDIR=${KV_DIR} SUBLEVEL=${KV_PATCH} -f local.mk || die "emake failed"
}
src_install() {
cd util
exeinto /sbin
exeopts -m0500
doexe mount.aufs umount.aufs auplink aulchown || die
doman aufs.5 || die
insinto /etc/default
newins etc_default_aufs aufs || die
linux-mod_src_install
}
pkg_postinst() {
elog "To be able to use aufs, you have to load the kernel module by typing:"
elog "modprobe aufs"
elog "For further information refer to the aufs man page"
if use sec_perm || use nfs ; then
ewarn "Your kernel has been patched in order to export security"
ewarn "permissions. You will need to recompile your kernel with"
ewarn "this new patch in order for ${PN} to function."
fi
linux-mod_pkg_postinst
}
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