Added voidlinux installer

voidlinux/3-post-install.sh

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+#!/bin/bash
+
+# Varidate whether script is executed as sourced or not
+(return 0 2>/dev/null) && sourced=1 || sourced=0
+if [ $sourced -eq 0 ] ; then
+	cat <<HEREDOC 1>&2
+***** ERROR : Must execute as source *****
+Execute as following : 
+source 3-post-install.sh
+
+Installation terminated.
+HEREDOC
+	exit    # use "exit" instead of "return", if not "sourced" execusion
+fi # "sourced" validation
+
+## Mount the target file system
+# /target is created by the Ubiquity installer
+echo "...Mount /dev/mapper/${VGNAME}-${LVROOTNAME} on /mnt/target."
+mount /dev/mapper/${VGNAME}-${LVROOTNAME} /mnt/target
+
+# And mount other directories
+echo "...Mount all other dirs."
+for n in proc sys dev etc/resolv.conf; do mount --rbind "/$n" "/mnt/target/$n"; done
+
+# Change root and create the keyfile and ramfs image for Linux kernel. 
+echo "...Chroot to /target."
+cat <<HEREDOC | chroot /mnt/target /bin/bash
+# Mount the rest of partitions by target /etc/fstab
+mount -a
+
+# Set up the kernel hook of encryption
+echo "...Install cryptsetup-initramfs package."
+xbps-install lvm2 cryptsetup
+
+# Prepare a key file to embed in to the ramfs.
+echo "...Prepair key file."
+mkdir /etc/luks
+dd if=/dev/urandom of=/etc/luks/boot_os.keyfile bs=4096 count=1 status=none
+chmod u=rx,go-rwx /etc/luks
+chmod u=r,go-rwx /etc/luks/boot_os.keyfile
+
+# Add a key to the key file. Use the passphrase in the environment variable. 
+echo "...Add a key to the key file."
+printf %s "${PASSPHRASE}" | cryptsetup luksAddKey -d - "${DEV}${CRYPTPARTITION}" /etc/luks/boot_os.keyfile
+
+# Add the LUKS volume information to /etc/crypttab to decrypt by kernel.  
+echo "...Add LUKS volume info to /etc/crypttab."
+echo "${CRYPTPARTNAME} UUID=$(blkid -s UUID -o value ${DEV}${CRYPTPARTITION}) /etc/luks/boot_os.keyfile luks,discard" >> /etc/crypttab
+
+echo "...Register key file to the ramfs"
+echo 'install_items+=" /etc/luks/boot_os.keyfile /etc/crypttab " ' > /etc/dracut.conf.d/10-crypt.conf
+
+# Finally, update the ramfs initial image with the key file. 
+echo "...Upadte initramfs."
+xbps-reconfigure -fa
+echo "...grub-mkconfig."
+grub-mkconfig -o /boot/grub/grub.cfg
+
+# Leave chroot
+exit
+HEREDOC
+
+# Finishing message
+cat <<HEREDOC
+****************** Post-install process finished ******************
+
+...Ready to reboot.
+HEREDOC