1#!/bin/sh 2# 3# $NetBSD: resize_disklabel,v 1.3 2018/10/06 09:58:55 jmcneill Exp $ 4# 5 6# PROVIDE: resize_disklabel 7# REQUIRE: fsck_root 8# BEFORE: resize_root 9 10$_rc_subr_loaded . /etc/rc.subr 11 12name="resize_disklabel" 13rcvar=$name 14start_cmd="resize_disklabel_start" 15stop_cmd=":" 16 17get_rawpart() 18{ 19 partno=$(/sbin/sysctl -n kern.rawpartition) 20 test $partno = 2 && echo c || echo d 21} 22 23get_total_sectors() 24{ 25 disk=$1 26 /sbin/drvctl -p $disk disk-info/geometry/sectors-per-unit 27} 28 29get_rawpart_sectors() 30{ 31 disk=$1 32 rawpart=$2 33 /sbin/disklabel $disk | grep "^ $rawpart:" | awk '{ print $2; }' 34} 35 36grow_mbrpart() 37{ 38 disk=$1 39 rawpart=$(get_rawpart) 40 41 eval $(/sbin/fdisk -S $disk) 42 if [ ! "$PART1ID" = "169" ]; then 43 warn "No NetBSD partition found in MBR partition #1" 44 return 45 fi 46 47 ts=$(($(get_total_sectors $disk) - ${PART1START})) 48 rs=${PART1SIZE} 49 50 if [ "$ts" = "$rs" ]; then 51 return 52 fi 53 54 oldsize=$(($rs * 512 / 1024 / 1024)) 55 newsize=$(($ts * 512 / 1024 / 1024)) 56 echo "Growing $disk MBR partition #1 (${oldsize}MB -> ${newsize}MB)" 57 /sbin/fdisk -f -u -1 -s 169/${PART1START}/${ts} ${disk} 58} 59 60grow_disklabel() 61{ 62 disk=$1 63 part=$2 64 rawpart=$(get_rawpart) 65 66 ts=$(get_total_sectors $disk) 67 rs=$(get_rawpart_sectors $disk $rawpart) 68 69 if [ "$ts" = "$rs" ]; then 70 return 71 fi 72 73 oldsize=$(($rs * 512 / 1024 / 1024)) 74 newsize=$(($ts * 512 / 1024 / 1024)) 75 echo "Growing $disk disklabel (${oldsize}MB -> ${newsize}MB)" 76 printf "A\ny\n$part\n\n\n\$\nc\n\n\n\$\nd\n\n\n\$\nW\ny\nQ\n" | \ 77 disklabel -i $disk >/dev/null 78} 79 80resize_disklabel_start() 81{ 82 if [ x"${resize_disklabel_disk}" = "x" ]; then 83 resize_disklabel_disk="$(/sbin/sysctl -n kern.root_device)" 84 fi 85 if [ x"${resize_disklabel_part}" = "x" ]; then 86 resize_disklabel_part=$(printf \\$(printf '%03o' $(( 97 + $(sysctl -n kern.root_partition) )))) 87 fi 88 89 grow_mbrpart "${resize_disklabel_disk}" 90 grow_disklabel "${resize_disklabel_disk}" "${resize_disklabel_part}" 91} 92 93load_rc_config $name 94run_rc_command "$1" 95