Revonzy Mini Shell

#!/bin/sh -e
# Detects Mac OS X. I don't yet know how Mac OS <= 9 fits into this.
. /usr/share/os-prober/common.sh

partition="$1"
mpoint="$2"
type="$3"

debug() {
  logger -t macosx-prober "debug: $@"
}

# Weed out stuff that doesn't apply to us
case "$type" in
  hfsplus) debug "$1 is an HFS+ partition" ;;
  *) debug "$1 is not an HFS+ partition: exiting"; exit 1 ;;
esac

# Could use a better test than this.
# /System/Library/CoreServices/SystemVersion.plist has version information,
# but I don't think it exists on Mac OS <= 9, and it's XML so parsing in
# shell will be nasty.

if [ -e "$2/mach_kernel" ] && ! dd if="$2/mach_kernel" count=1 bs=5 2>/dev/null | grep -q Dummy ; then
  label="$(count_next_label MacOSX)"
  result "$1:Mac OS X:$label:macosx"
  exit 0
else
  exit 1
fi