#!/bin/sh
# aoe-mkdevs - make static device nodes on systems without udev
# Copyright 2008, Coraid, Inc., and licensed under GPL v.2.

n_shelves=${n_shelves:-10}
n_partitions=${n_partitions:-16}

if test "$#" != "1"; then
	echo "Usage: `basename $0` {dir}" 1>&2
	echo "       n_partitions=16 `basename $0` {dir}" 1>&2
	exit 1
fi
dir=$1
zero="`basename $0`"
MAJOR=152

dyn=/sys/module/aoe/parameters/aoe_dyndevs
if test -r "$dyn" && test "`cat $dyn`" = 1; then
	cat 1>&2 <<EOF
$zero Error: aoe module is using dynamic devices.
$zero: Please see the aoe-mkdevs manpage.
$zero: Exiting.
EOF
	exit 1
fi
if test "`ps axwwww | grep 'udev[d]'`" || test -d "/dev/.udev"; then
	cat 1>&2 <<EOF
$zero Error: udev detected.  You shouldn't need to use $zero.
$zero: Please see the aoe-mkdevs manpage.
$zero: Exiting.
EOF
	exit 1
fi

set -e

mkdir -p $dir

# (Status info is in sysfs.  See status.sh.)
# rm -f $dir/stat
# mknod -m 0400 $dir/stat c $MAJOR 1
rm -f $dir/err
mknod -m 0400 $dir/err c $MAJOR 2
rm -f $dir/discover
mknod -m 0200 $dir/discover c $MAJOR 3
rm -f $dir/interfaces
mknod -m 0200 $dir/interfaces c $MAJOR 4
rm -f $dir/revalidate
mknod -m 0200 $dir/revalidate c $MAJOR 5
rm -f $dir/flush
mknod -m 0200 $dir/flush c $MAJOR 6

# pass along the env var to aoe-mkshelf
export n_partitions

mkshelf=`echo $0 | sed 's!mkdevs!mkshelf!'`
i=0
while test $i -lt $n_shelves; do
	$mkshelf $dir $i
	i=`expr $i + 1`
done