fix: typos, checksum, ordering

install.inc

@@ -22,9 +22,24 @@ function download_version()
     downloads="$(mktemp -d)"
     pushd "$downloads"
 
-    download_and_verify "$release_version" boot-initrd
     download_and_verify "$release_version" boot-kernel
+    if [ $? -eq 1 ]; then
+        popd
+        rm -rf "$downloads"
+        exit 1
+    fi
+    download_and_verify "$release_version" boot-initrd
+    if [ $? -eq 1 ]; then
+        popd
+        rm -rf "$downloads"
+        exit 1
+    fi
     download_and_verify "$release_version" squashfs
+    if [ $? -eq 1 ]; then
+        popd
+        rm -rf "$downloads"
+        exit 1
+    fi
 
     mount_efi "$drive"
     mv boot-init "$mnt"/boot-initrd."$release_version"

maas-images.inc

@@ -54,10 +54,11 @@ function download_and_verify()
     get_checksum "$release_version" "$fname"
 
     wget "$url" -O "$fname"
-    sha256sum=$(sha256sum "$fname")
+    sha256sum=$(sha256sum "$fname"|cut -d\  -f1)
     if [ "$sha256sum" == "$checksum" ]; then
         return 0
     fi
+    echo "Checksum fail"
     rm -f "$fname"
     return 1
 }

syslinux-menu.inc

@@ -23,6 +23,9 @@ function update_syslinux_menu()
     partition_list "$drive"
     for part in $partitions; do
         version_from_partnum "$drive" "$part"
+        if [ -z "$version" ]; then
+            continue
+        fi
         versions["$version"]=1
         for f in "${files[@]}"; do
             if [ ! -e "$mnt"/"$imagepath"/"$f""$version" ]; then

syslinux.inc

@@ -36,7 +36,7 @@ function mount_efi()
 function umount_efi()
 {
     umount "$mnt"
-    flush
+    sync
     rmdir "$mnt"
 }