Add installer script

This script installs the OS to a real disk drive.

diff --git a/boot/x86/disk.dump b/boot/x86/disk.dump
index 5a0329bef74940990720cf0486191443aa1cdf8e..ebf63acb54875ed1e829e43c0378335464158ccd 100644 (file)
--- a/boot/x86/disk.dump
+++ b/boot/x86/disk.dump
@@ -4,4 +4,4 @@ device: disk.img
 unit: sectors
 sector-size: 512
 
-disk.img1 : start=        2048, size=     2095104, type=b, bootable
+disk.img1 : start=        2048, size=     2095104, type=c, bootable

diff --git a/nameless2disk b/nameless2disk
new file mode 100755 (executable)
index 0000000..28b3427
--- /dev/null
+++ b/nameless2disk
@@ -0,0 +1,111 @@
+#!/bin/sh
+# Shell script to install Nameless to a disk.
+
+BINARIES=( boot/x86/mbr boot/x86/vbr-fat32 boot/x86/stage3/LOADER.BIN kernel/kernel.bin )
+
+check_binaries() {
+       for i in "${BINARIES[@]}"; do
+               if ! [ -e $i ]; then
+                       echo $i does not exist, have you compiled Nameless?
+                       exit 1
+               fi
+       done
+}
+
+install_blkdev() {
+       # Ask the user are they sure they want to install.
+       local prompt
+       echo About to install Nameless to real disk $target.
+       echo This will WIPE ALL DATA on $target, type YES if you want to continue.
+       read -r prompt
+       if [ $prompt != "YES" ]; then
+               echo -e "Aborting."
+               exit 1
+       fi
+
+       echo OK, installing Nameless to $target.
+       echo Creating partition table on $target...
+
+       # Create a partition table on the disk.
+       fdisk $target <<- END > /dev/null
+       o
+       n
+       p
+       1
+
+
+       a
+       t
+       0c
+       w
+       END
+       if ! [ $? -eq 0 ]; then
+               echo An error occurred!
+               exit 1
+       fi
+       # Create a FAT32 filesystem on the disk.
+       echo Formatting $target...
+       mkfs.fat -F 32 "$target"1
+       if ! [ $? -eq 0 ]; then
+               echo An error occurred!
+               exit 1
+       fi
+       # Write MBR and VBR to the disk.
+       # TODO: write VBR to the backup BPB as well?
+       echo Writing bootsectors to $target...
+       dd 'if=boot/x86/mbr' "of=$target" 'bs=440' 'count=1'
+       if ! [ $? -eq 0 ]; then
+               echo An error occurred!
+               exit 1
+       fi
+       dd 'if=boot/x86/vbr-fat32' 'of='"$target"1 'bs=1' 'skip=90' 'seek=90'
+       if ! [ $? -eq 0 ]; then
+               echo An error occurred!
+               exit 1
+       fi
+       # Mount the partition and copy stage3 and kernel to it.
+       echo Copying files to $target...
+       local mountpoint=$(mktemp -d)
+       mount "$target"1 $mountpoint
+       if ! [ $? -eq 0 ]; then
+               echo An error occurred!
+               exit 1
+       fi
+       cp boot/x86/stage3/LOADER.BIN $mountpoint/LOADER.BIN
+       cp kernel/kernel.bin $mountpoint/KERNEL.BIN
+       if ! [ $? -eq 0 ]; then
+               echo An error occurred!
+               exit 1
+       fi
+       # Unmount the partition and flush write cache to make sure the OS
+       # binaries have actually been written to the disk.
+       echo Unmounting $target...
+       umount $mountpoint
+       rm -rf $mountpoint
+       echo Flushing cache...
+       sync
+       echo Nameless has been successfully installed to $target!
+       return
+}
+
+# Check if all the required tools are installed.
+[ -z $(command -v fdisk) ] && echo fdisk not found, is util-linux installed? && exit 127
+[ -z $(command -v mkfs.fat) ] && echo mkfs.fat not found, is dosfstools installed? && exit 127
+
+# Make sure that Nameless has been compiled.
+check_binaries
+
+# cd to the directory we're in.
+cd $(dirname $(realpath $0))
+
+# For convenience, list all connected disks.
+fdisk -l
+
+# Ask the user where to install.
+echo -n "Choose the disk you want to install to: "
+read -r target
+
+# If the target does not exist or is not a blkdev, exit.
+[ -b $target ] || echo $target does not exist or is not a block device! || exit 1
+install_blkdev
+exit 0