Adding logic to auto initialize boot partitions.

2 files changed, 70 insertions, 4 deletions

diff --git a/modules.d/dnbd-root-filesystem/hooks/fetch-config.sh b/modules.d/dnbd-root-filesystem/hooks/update-boot-files.sh
index da94242d..071bfdcc 100755
--- a/modules.d/dnbd-root-filesystem/hooks/fetch-config.sh
+++ b/modules.d/dnbd-root-filesystem/hooks/update-boot-files.sh
@@ -8,10 +8,16 @@ bl.exception.try {
         cat /proc/cmdline | \
             sed --regexp-extended 's:^(BOOT_IMAGE=)?([^ ]+).+$:\2:' | \
                 sed 's:\\:/:')"
+    if [ "$kernel_file_path" = '' ]; then
+        kernel_file_path=kernel
+    fi
     local initramfs_file_path="$(
         cat /proc/cmdline | \
             sed --regexp-extended 's:^(.+ )?initrd=([^ ]+).*$:\2:' | \
                 sed 's:\\:/:')"
+    if [ "$initramfs_file_path" = '' ]; then
+        initramfs_file_path=initramfs
+    fi
     mkdir --parents /mnt
     local boot_partition_mounted=false
     local device_name
@@ -110,13 +116,65 @@ bl.exception.try {
     fi
     if [ -f /etc/openslx ] && ! $boot_partition_mounted; then
         source /etc/openslx
-        # TODO maybe "a create if not exists" logic could make sende here.
+        # TODO iterate through $SLX_INITIAL_BOOT_PARTITION_IDENTIFIER
         if \
             [[ "$SLX_INITIAL_BOOT_PARTITION_IDENTIFIER" != '' ]] && \
             mount "$SLX_INITIAL_BOOT_PARTITION_IDENTIFIER" /mnt \
                 &>/dev/null
         then
-            boot_partition_mounted=true
+            if [ -d /mnt/syslinux ]; then
+                boot_partition_mounted=true
+            elif $SLX_AUTO_INITIALIZE_BOOT_PARTITION && false; then
+                mkdir --parents /mnt/syslinux
+                #bl.logging.info Copy boot menu binaries to bootloader.
+                #cp /usr/lib/syslinux/boot/*.c32 /mnt/syslinux
+                bl.logging.info Install bootloader.
+                extlinux --install /mnt/syslinux
+                if false; then
+                    bl.logging.info \
+                        Set the \"legacy_boot\" flag to gpt based boot partition.
+                    sgdisk /dev/sda --attributes=1:set:2
+                    bl.logging.info Install MBR to gpt partition layout.
+                    dd \
+                        bs=440 \
+                        count=1 \
+                        conv=notrunc \
+                        if=/usr/lib/syslinux/bios/gptmbr.bin \
+                        of=/dev/sda \
+                        seek=TODO
+                else
+                    if ! fdisk --list /dev/sda | grep '^/dev/sda2 +\*' &>/dev/null; then
+                        bl.logging.info \
+                            Set the \"boot\" flag to mbr based boot partition.
+                        fdisk /dev/sda << EOF
+a
+2
+w
+EOF
+                    fi
+                    bl.logging.info Install MBR to gpt partition layout.
+                    dd \
+                        bs=440 \
+                        count=1 \
+                        conv=notrunc \
+                        if=/usr/lib/syslinux/bios/mbr.bin \
+                        of=/dev/sda
+                fi
+                cat << EOF > /mnt/syslinux/syslinux.cfg
+PROMPT 1
+TIMEOUT 50
+DEFAULT arch
+
+LABEL arch
+	LINUX ../$kernel_file_path
+	APPEND $(cat /proc/cmdline)
+	INITRD ../$initramfs_file_path
+EOF
+                boot_partition_mounted=true
+            fi
+        elif $SLX_AUTO_INITIALIZE_BOOT_PARTITION; then
+            bl.logging.info TODO make gdisk!
+            #boot_partition_mounted=true
         fi
     fi
     if [ -f /etc/openslx ]; then
diff --git a/modules.d/dnbd-root-filesystem/module-setup.sh b/modules.d/dnbd-root-filesystem/module-setup.sh
index f28c8102..388276e6 100755
--- a/modules.d/dnbd-root-filesystem/module-setup.sh
+++ b/modules.d/dnbd-root-filesystem/module-setup.sh
@@ -231,7 +231,7 @@ install() {
     inst_hook pre-udev 00 "$moddir/hooks/load-custom-kernel-modules.sh"
     # Get the openslx config from the servers configured in the kernel command
     # line (${SLX_SERVER}/${SLX_SERVER_BASE}/config).
-    inst_hook pre-mount 10 "$moddir/hooks/fetch-config.sh"
+    inst_hook pre-mount 10 "$moddir/hooks/update-boot-files.sh"
     # make the final blockdevice for the root system (dnbd -> xmount ->
     # device-mapper)
     if dracut_module_included systemd-initrd; then
@@ -295,7 +295,15 @@ install() {
         pgrep pkill killall \
         losetup lsblk \
         mkfifo mkfs.ext4 \
-        kexec
+        kexec \
+        fdisk \
+        gdisk \
+        syslinux \
+        extlinux \
+        sgdisk \
+        /usr/lib/syslinux/bios/gptmbr.bin \
+        /usr/lib/syslinux/bios/mbr.bin
+        #/usr/lib/syslinux/boot/*.c32 \
 }
 # endregion
 # region vim modline