#! /bin/sh 

# fs-change-quota -- change quotas on a flesystem
# $Id$
# Carlos Duarte <cgd@mail.teleweb.pt>, 990209

USAGE="\
usage: $0 [-hn] [-fs filesystem] from1 to1 [from2 to2 ...]

  -h      this help
  -n      no op
  -v      be verbose
  -fs filesystem
	  specify filesystem to act on


  eg: $0 -n -v 10240 102400
"

# default filesystem... 
fs=/www

while : ; do
	case x"$1" in 
	x-h)	echo "$USAGE"; exit 1 ;;
	x-n)	dry_run=yes ;;
	x-v)	verbose=yes ;;
	x-fs)	fs="$2" ; shift ;;
	x--)	shift; break ;;
	x-?)	echo "invalid option -- `echo $1|cut -c2-`"
		echo "$USAGE"; exit 1 ;;
	*)	break ;;
	esac
	shift
done

## if _must_ accept one extra argument after options
if test $# -eq 0; then echo "$USAGE"; exit 1; fi
if test `expr $# % 2` -ne 0; then echo "$USAGE"; exit 1; fi
if test "$fs" = ""; then echo "$USAGE"; exit 1; fi

tmp=/tmp/x.$$.
repquota -e $tmp $fs

awk 'BEGIN {
'"`while test $# -ne 0; do
	echo \"x[$1] = $2; \"
	shift
	shift
done`"'
}
{
	print
	getline
	if (x[$3]) 
		$3 = x[$3]
	print
}' < $tmp > $tmp.1

if test "$dry_run" != "yes"; then
	test "$verbose" = yes && echo "doing: edquota -i $tmp.1 ... "
	edquota -i $tmp.1
	test "$verbose" = yes && echo "doing: rm -f $tmp $tmp.1 ... "
	rm -f $tmp $tmp.1
else
	cat<<EOF
Please, take a look at: 
  $tmp
        file with original quotas
  $tmp.1
	file with future quotas to implement
EOF
fi