initial commit to prepare for rewrite into golang for actual use

old_bash_version/lib/apply_CHANGES.sh

@@ -0,0 +1,152 @@
+#!/bin/bash
+# shellcheck disable=SC1091
+
+function make_BACKUP () {
+    local BACKUPDIR
+    BACKUPDIR="$SCRIPTDIR/backup"
+
+    if [ ! -d "$BACKUPDIR" ];
+    then
+        # Make the backup directories and backup the files  
+        if [ -d "/etc/initramfs-tools" ];
+        then
+            mkdir -p "$BACKUPDIR/etc/initramfs-tools"
+            cp -v "/etc/initramfs-tools/modules" "$BACKUPDIR/etc/initramfs-tools/modules"
+            cp -v "/etc/modules" "$BACKUPDIR/etc/modules"
+
+        elif [ -d "/etc/dracut.conf" ];
+        then
+            mkdir -p "$BACKUPDIR/etc/dracut.conf.d"
+            if [ -f "/etc/dracut.conf.d/10-vfio.conf" ];
+            then
+                cp -v "/etc/dracut.conf.d/10-vfio.conf" "$BACKUPDIR/etc/dracut.conf.d/10-vfio.conf"
+
+            fi
+
+        elif [ -f "/etc/mkinitcpio.conf" ];
+        then
+            mkdir -p "$BACKUPDIR/etc"
+            cp -v "/etc/mkinitcpio.conf" "$BACKUPDIR/etc/mkinitcpio.conf"
+
+        fi
+
+        if [ -f "/etc/default/grub" ];
+        then
+            mkdir -p "$BACKUPDIR/etc/default"
+            cp -v "/etc/default/grub" "$BACKUPDIR/etc/default/grub"
+
+        fi
+
+        if [ -d "/etc/modprobe.d" ];
+        then
+            mkdir -p "$BACKUPDIR/etc/modprobe.d"
+
+            # If a vfio.conf file exists, backup that too
+            if [ -f "/etc/modprobe.d/vfio.conf" ];
+            then
+                cp -v "/etc/modprobe.d/vfio.conf" "$BACKUPDIR/etc/modprobe.d/vfio.conf"
+
+            fi
+
+        fi
+
+        printf "Backup completed!\n"
+
+    else
+        echo "
+A backup already exists!
+backup skipped.
+"
+    fi
+}
+
+function copy_FILES () {
+    echo "Starting copying files to the system!"
+
+    if [ -d "/etc/modprobe.d" ];
+    then
+        sudo cp -v "$SCRIPTDIR/$MODPROBE/vfio.conf" "/etc/modprobe.d/vfio.conf"
+
+    fi
+
+    if [ -d "/etc/initramfs-tools" ];
+    then
+        sudo cp -v "$SCRIPTDIR/$ETCMODULES" "/etc/modules"
+        sudo cp -v "$SCRIPTDIR/$INITRAMFS/modules" "/etc/initramfs-tools/modules"
+        echo "
+Rebuilding initramfs"
+        sudo update-initramfs -u
+
+    elif [ -f "/etc/dracut.conf" ];
+    then
+        cp -v "$SCRIPTDIR/$DRACUT/10-vfio.conf" "/etc/dracut.conf.d/10-vfio.conf"
+        echo "
+Rebuilding initramfs"
+        sudo dracut -f -v --kver "$(uname -r)"
+
+    elif [ -f "/etc/mkinitcpio.conf" ];
+    then
+        cp -v "$SCRIPTDIR/$MKINITCPIO" "/etc/mkinitcpio.conf"
+        echo "
+Rebuilding initramfs"
+        sudo mkinitcpio -P
+
+    else
+        echo "
+Unsupported initramfs infrastructure
+In order to make vfio work, please add these modules to your
+initramfs and make them load early, then rebuild initramfs.
+
+vfio
+vfio_iommu_type1
+vfio_pci
+vfio_virqfd
+
+
+Press ENTER to continue once you have done the above."
+    read -r
+        
+    fi
+
+    
+}
+
+function apply_CHANGES () {
+	clear
+    # Get the config paths
+    source "$SCRIPTDIR/lib/paths.sh"
+
+    echo "Configuration is now complete and these files have been generated for your system:
+$SCRIPTDIR/$ETCMODULES
+$SCRIPTDIR/$INITRAMFS/modules
+$SCRIPTDIR/$MODPROBE/vfio.conf
+
+By proceeding, a backup of your system's version of these files will be placed in
+$SCRIPTDIR/backup
+unless a backup already exist.
+
+Then the files above will be copied to your system followed by running followed by updating your
+initramfs and then attempt adding new kernel arguments to your bootloader."
+	
+	read -r -p "Do you want to proceed with the installation of the files? (no=quit) [Y/n]: " YESNO
+
+    case "${YESNO}" in
+        [Nn]*)
+            exit 1
+        ;;
+        *)
+            make_BACKUP
+            copy_FILES
+            exec "$SCRIPTDIR/lib/set_CMDLINE.sh"
+        ;;
+    esac
+}
+
+
+function main () {
+    SCRIPTDIR=$(dirname "$(realpath "$0")" | perl -pe "s/\/\.\.\/lib//" | perl -pe "s/\/lib$//")
+
+    apply_CHANGES
+}
+
+main