1 files changed, 106 insertions, 0 deletions
diff --git a/mkbootimg_ext2.sh b/mkbootimg_ext2.sh
new file mode 100755
index 0000000..30f2e94
--- /dev/null
+++ b/mkbootimg_ext2.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+
+KERNEL=
+RAMDISK=
+CMDLINE=
+GENEXT2FS=
+GRUBCONF=
+TMPDIR=
+OUTPUT=
+
+while [ $# -gt 0 ]; do
+    case $1 in
+        --kernel)
+            KERNEL=$2
+            shift
+            ;;
+
+        --ramdisk)
+            RAMDISK=$2
+            shift
+            ;;
+
+        --cmdline)
+            CMDLINE=$2
+            shift
+            ;;
+
+        --genext2fs)
+            GENEXT2FS=$2
+            shift
+            ;;
+
+        --tmpdir)
+            TMPDIR=$2
+            shift
+            ;;
+        --grubconf)
+            GRUBCONF=$2
+            shift
+            ;;
+        --output)
+            OUTPUT=$2
+            shift
+            ;;
+
+        --help)
+            echo "Usage: $0 OPTIONS"
+            echo "Create an ext2 image that contains everything necessary"
+            echo -e "to be the boot file system.\n"
+            echo "The following options exist:"
+            echo "  --genext2fs <genext2fs>   The location of genext2fs binary"
+            echo "  --kernel <kernel>         The kernel to boot"
+            echo "  --ramdisk <ramdisk>       The ramdisk to be used"
+            echo "  --cmdline <cmdline>       The command line to use"
+            echo "  --grubconf <confile>      The path to grub conf file"
+            echo "  --tmpdir <tmpdir>         The temporary dir where files"\
+                 "can be copied"
+            echo "  --output <output>         The filename of the output image"
+            echo
+            exit 0
+            ;;
+
+        *)
+            echo "Unknown option $1."
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+if [ -z "$KERNEL" -o -z "$RAMDISK" -o -z "$GENEXT2FS" -o -z "$TMPDIR" -o \
+     -z "$OUTPUT" ]; then
+    echo "Missing required arguments."
+    exit 1
+fi
+
+if ! [ -x "$GENEXT2FS" -a -f "$RAMDISK" -a -f "$KERNEL" ]; then
+    echo "Must provide path to a valid genext2fs binary."
+    exit 1
+fi
+
+rm -rf $TMPDIR
+mkdir -p $TMPDIR
+
+echo -n "$CMDLINE" > $TMPDIR/cmdline
+cp -f $KERNEL $TMPDIR/kernel
+cp -f $RAMDISK $TMPDIR/ramdisk
+
+if [ -f "$GRUBCONF" ]; then
+    mkdir -p $TMPDIR/boot/grub
+    cp -f $GRUBCONF $TMPDIR/boot/grub/menu.lst
+fi
+
+num_blocks=`du -sk $TMPDIR | tail -n1 | awk '{print $1;}'`
+
+# add 1%
+extra=`expr $num_blocks / 100`
+reserve=10
+[ $extra -lt $reserve ] && extra=$reserve
+
+num_blocks=`expr $num_blocks + $extra`
+num_inodes=`find $TMPDIR | wc -l`
+
+$GENEXT2FS -d $TMPDIR -b $num_blocks -N $num_inodes -m 0 $OUTPUT
+
+exit 0