1 files changed, 116 insertions, 0 deletions
diff --git a/libre/linux-libre-grsec/linux-libre-grsec.install b/libre/linux-libre-grsec/linux-libre-grsec.install
new file mode 100644
index 000000000..cff18d020
--- /dev/null
+++ b/libre/linux-libre-grsec/linux-libre-grsec.install
@@ -0,0 +1,116 @@
+# arg 1:  the new package version
+# arg 2:  the old package version
+
+KERNEL_NAME=-grsec
+KERNEL_VERSION=
+
+_add_groups() {
+  if getent group tpe-trusted >/dev/null; then
+    groupmod -g 200 -n tpe tpe-trusted
+  fi
+
+  if ! getent group tpe >/dev/null; then
+    groupadd -g 200 -r tpe
+  fi
+
+  if ! getent group audit >/dev/null; then
+    groupadd -g 201 -r audit
+  fi
+
+  if getent group socket-deny-all >/dev/null; then
+    groupmod -g 202 socket-deny-all
+  else
+    groupadd -g 202 -r socket-deny-all
+  fi
+
+  if getent group socket-deny-client >/dev/null; then
+    groupmod -g 203 socket-deny-client
+  else
+    groupadd -g 203 -r socket-deny-client
+  fi
+
+  if getent group socket-deny-server >/dev/null; then
+    groupmod -g 204 socket-deny-server
+  else
+    groupadd -g 204 -r socket-deny-server
+  fi
+}
+
+_remove_groups() {
+  for group in tpe 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".
+
+Trusted Path Execution is disabled by default and can be enabled via the
+kernel.grsecurity.tpe sysctl option. The tpe group can be used either to build
+a whitelist for users free from the restrictions (tpe_invert = 1) or a
+blacklist of users with the restrictions (tpe_invert = 0).
+
+To prevent certain socket access to users, there are three groups:
+socket-deny-server, socket-deny-client and socket-deny-all.
+
+There is an extensive wikibook on grsecurity and some documentation in the
+Parabola GNU/Linux-libre Wiki:
+
+https://en.wikibooks.org/wiki/Grsecurity
+https://wiki.parabolagnulinux.org/Grsecurity
+
+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
+  _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
+
+  if getent group proc-trusted >/dev/null; then
+    groupdel proc-trusted
+  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
+
+  if [ $(vercmp $2 3.13) -lt 0 ]; then
+    echo ">>> WARNING: AT keyboard support is no longer built into the kernel."
+    echo ">>>          In order to use your keyboard during early init, you MUST"
+    echo ">>>          include the 'keyboard' hook in your mkinitcpio.conf."
+  fi
+
+  _add_groups
+  _help
+}
+
+post_remove() {
+  # also remove the compat symlinks
+  rm -f boot/initramfs-linux-libre${KERNEL_NAME}.img
+  rm -f boot/initramfs-linux-libre${KERNEL_NAME}-fallback.img
+
+  _remove_groups
+}