#!/bin/bash
#
# 	DESCRIPTION:	formating partition with a filesystem
#			if have duplicate partition, it will format the finally filesystem type.
#
#	SCRIPT NAME:	format_partition.sh
#
#	Usage:	echo "/dev/sda1 ext2" | ./format_partition.sh
#
#	Input:	stdin
#			1. partition
#			2. filesystem type
#
#	Output:	
#			success:
#			@ format $devname success
#	Return value:
#			1 argument error
#			2 deivce node doesn't exist
#			3 filesystem no implement
#			127 format partition utils not found
#
#	AUTHOR:		Qin Bo
#
#	EMAIL:		bqin@linx-info.com
#
#	DATE:		2010-08-05
#
#	HISTORY:
#	REVISOR		DATE			MODIFICATION
#	Qin Bo		2010-08-05		create
#
#
#

source ./functions

# ex: format_partition /dev/sda1 ext3
format_partition ()
{
	if [ $# -ne 2 ];then
		err "$FUNCNAME function argument error, it must have 2 arguments !"
		return 1
	fi

	local devname="$1"
	local fs_type="$2"

	if [ ! -e "$devname" ];then
	    # wait for device
	    for((i=0;i<10;i++))do
		[ -e "$devname" ] && break
		sleep $i
	    done
	    if [ ! -e "$devname" ];then
		err "$devname node doesn't exist !"
		return 2
	    fi
	fi

	# partition may be used to swap, or has already mounted
	if grep  -q  "^$devname " /proc/swaps ;then
		swapoff "$devname"
	elif grep -q "^$devname " /proc/mounts;then
		reumount $devname 1>>"$DEV_LOG" 2>&1
	fi

	info "formating device "$devname" as "$fs_type" filesystem"
	case ${fs_type} in
		ext2)
		 	mkfs.ext2 -F -I 128 "$devname" 1>>"$DEV_LOG" 2>&1
		;;
		ext3)
			mkfs.ext3 -F -I 128 "$devname" 1>>"$DEV_LOG" 2>&1
		;;
		ext4)
			mkfs.ext4 -F -I 128 "$devname" 1>>"$DEV_LOG" 2>&1
		;;
		reiserfs)
			yes | mkfs.reiserfs -f "$devname"  1>>"$DEV_LOG" 2>&1
		;;
		xfs)
			yes | mkfs.xfs -f "$devname" 1>>"$DEV_LOG" 2>&1
		;;
		jfs)
			yes | mkfs.jfs -q "$devname" 1>>"$DEV_LOG" 2>&1
		;;
	    swap|linux-swap)
			mkswap -f "$devname" 1>>"$DEV_LOG" 2>&1
		;;
		vfat)
			mkfs.vfat "$devname" 1>>"$DEV_LOG" 2>&1
		;;
		*)
			err ""$fs_type" filesystem no implement yet !"
			return 3
		;;
	esac
}

main ()
{
	local line

	while read line;do
		if [ -n "$line" ];then
			# Notice: don't use "$line"
			format_partition $line
			erv
			info "format $(echo $line|awk '{print $1}') success" stdout

		fi
	done
}

main "$@"

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