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# arg 1: the new package version
# arg 2: the old package version
KERNEL_NAME=-grsec
KERNEL_VERSION=
_fix_permissions() {
/usr/bin/pax-flags-libre -y
echo
echo You can repeat this process after updating or installing affected
echo binaries by running "pax-flags-libre".
}
_add_proc_group() {
if ! getent group proc-trusted >/dev/null; then
groupadd -g 9998 -r proc-trusted
fi
}
_add_tpe_group() {
if getent group grsec-trusted >/dev/null; then
groupmod -n tpe-trusted grsec-trusted
fi
if ! getent group tpe-trusted >/dev/null; then
groupadd -g 9999 -r tpe-trusted
fi
}
_add_socket_deny_groups() {
if ! getent group socket-deny-server >/dev/null; then
groupadd -g 9997 -r socket-deny-server
fi
if ! getent group socket-deny-client >/dev/null; then
groupadd -g 9996 -r socket-deny-client
fi
if ! getent group socket-deny-all >/dev/null; then
groupadd -g 9995 -r socket-deny-all
fi
}
_add_groups() {
_add_proc_group
_add_tpe_group
_add_socket_deny_groups
}
_remove_groups() {
for group in grsec-trusted proc-trusted tpe-trusted socket-deny-server socket-deny-client socket-deny-all; do
if getent group $group >/dev/null; then
groupdel $group
fi
done
}
_help() {
cat <<EOF
Configuration of grsecurity features via sysctl is possible in
"/etc/sysctl.d/05-grsecurity.conf".
For group tpe-trusted, Trusted Path Execution is disabled. For group
proc-trusted, the access to /proc is not restricted. Think carefully before
adding a normal user to these groups.
To prevent certain socket access to users, there are three groups:
socket-deny-server, socket-deny-client and socket-deny-all.
EOF
}
post_install () {
# updating module dependencies
echo ">>> Updating module dependencies. Please wait ..."
depmod ${KERNEL_VERSION}
if command -v mkinitcpio 2>&1 > /dev/null; then
echo ">>> Generating initial ramdisk, using mkinitcpio. Please wait..."
mkinitcpio -p linux-libre${KERNEL_NAME}
fi
_add_groups
_fix_permissions
_help
}
post_upgrade() {
if findmnt --fstab -uno SOURCE /boot &>/dev/null && ! mountpoint -q /boot; then
echo "WARNING: /boot appears to be a separate partition but is not mounted."
fi
# updating module dependencies
echo ">>> Updating module dependencies. Please wait ..."
depmod ${KERNEL_VERSION}
if command -v mkinitcpio 2>&1 > /dev/null; then
echo ">>> Generating initial ramdisk, using mkinitcpio. Please wait..."
mkinitcpio -p linux-libre${KERNEL_NAME}
fi
_add_groups
_fix_permissions
_help
}
post_remove() {
# also remove the compat symlinks
rm -f boot/initramfs-linux-libre${KERNEL_NAME}.img
rm -f boot/initramfs-linux-libre${KERNEL_NAME}-fallback.img
_remove_groups
}
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