4 files changed, 37 insertions, 1 deletions
diff --git a/source/a/sysvinit-scripts/default/efivarfs b/source/a/sysvinit-scripts/default/efivarfs
new file mode 100644
index 000000000..973e041d7
--- /dev/null
+++ b/source/a/sysvinit-scripts/default/efivarfs
@@ -0,0 +1,7 @@
+# By default, we will mount efivarfs read-write on /sys/firmware/efi/efivars.
+# This is needed in order to create or modify EFI boot menu entries.
+# If you do not want this, you may set the variable below to 'ro' for
+# read-only, or 'nomount' (or anything else) if you do not want rc.S to mount
+# efivarfs. However, if might still be mounted by /etc/fstab or elsewhere.
+
+EFIVARFS=rw
diff --git a/source/a/sysvinit-scripts/doinst.sh b/source/a/sysvinit-scripts/doinst.sh
index c11a17985..ad6980247 100644
--- a/source/a/sysvinit-scripts/doinst.sh
+++ b/source/a/sysvinit-scripts/doinst.sh
@@ -24,6 +24,7 @@ config etc/rc.d/rc.sysvinit.new
 config etc/rc.d/rc.modules.new
 config etc/rc.d/rc.modules.local.new
 config etc/default/cpufreq.new
+config etc/default/efivarfs.new
 
 ( cd etc/rc.d ; rm -rf rc.0 )
 ( cd etc/rc.d ; ln -sf rc.6 rc.0 )
diff --git a/source/a/sysvinit-scripts/scripts/rc.S b/source/a/sysvinit-scripts/scripts/rc.S
index 7c004e6f5..37eaac2f9 100644
--- a/source/a/sysvinit-scripts/scripts/rc.S
+++ b/source/a/sysvinit-scripts/scripts/rc.S
@@ -24,6 +24,31 @@ if [ ! -d /sys/kernel -a -z "$container" ]; then
   /sbin/mount -v sysfs /sys -n -t sysfs 2> /dev/null
 fi
 
+# The efivarfs filesystem is used for reading and writing EFI variables, such
+# as the boot menu entries. By default efivarfs will be mounted read-write on
+# the /sys/firmware/efi/efivars directory. To modify this behavior, edit the
+# file: /etc/default/efivarfs
+# Only try to mount if this directory exists (so the kernel supports efivarfs):
+if [ -d /sys/firmware/efi/efivars ]; then
+  # Only try to mount if efivarfs is not already mounted:
+  if ! mount | grep -wq efivarfs ; then
+    # Mount according to /etc/default/efivarfs:
+    if [ -r /etc/default/efivarfs ]; then
+      . /etc/default/efivarfs
+    else # default
+      EFIVARFS=rw
+    fi
+    case "$EFIVARFS" in
+      'rw')
+      mount -o rw -t efivarfs none /sys/firmware/efi/efivars
+      ;;
+      'ro')
+      mount -o ro -t efivarfs none /sys/firmware/efi/efivars
+      ;;
+    esac
+  fi
+fi
+
 # If /run exists, mount a tmpfs on it (unless the
 # initrd has already done so):
 if [ -d /run -a -z "$container" ]; then
diff --git a/source/a/sysvinit-scripts/sysvinit-scripts.SlackBuild b/source/a/sysvinit-scripts/sysvinit-scripts.SlackBuild
index 0d6acafd4..60b17e1e3 100755
--- a/source/a/sysvinit-scripts/sysvinit-scripts.SlackBuild
+++ b/source/a/sysvinit-scripts/sysvinit-scripts.SlackBuild
@@ -25,7 +25,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 PKGNAM=sysvinit-scripts
 VERSION=${VERSION:-15.1}
 ARCH=noarch
-BUILD=${BUILD:-4}
+BUILD=${BUILD:-5}
 
 # If the variable PRINT_PACKAGE_NAME is set, then this script will report what
 # the name of the created package would be, and then exit. This information
@@ -56,6 +56,9 @@ chown root:root $PKG/etc/inittab.new
 mkdir -p $PKG/etc/default
 cat $CWD/default/cpufreq > $PKG/etc/default/cpufreq.new
 
+# Install /etc/default/efivarfs.new:
+cat $CWD/default/efivarfs > $PKG/etc/default/efivarfs.new
+
 mkdir -p $PKG/install
 zcat $CWD/doinst.sh > $PKG/install/doinst.sh
 cat $CWD/slack-desc > $PKG/install/slack-desc