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resize_root revision 1.1 
      1 #!/bin/sh
      2 #
      3 # $NetBSD: resize_root,v 1.1 2015/03/30 10:58:37 chopps Exp $
      4 #
      5 
      6 # PROVIDE: resize_root
      7 # REQUIRE: fsck_root
      8 
      9 $_rc_subr_loaded . /etc/rc.subr
     10 
     11 name="resize_root"
     12 rcvar=$name
     13 start_cmd="resize_root_start"
     14 stop_cmd=":"
     15 fstab_file=/etc/fstab
     16 rootmp="/"
     17 
     18 split_options()
     19 {
     20 	local IFS
     21 	IFS=,
     22 	OPTS=$1
     23 	for i in $OPTS; do
     24 		echo $i
     25 	done
     26 }
     27 
     28 resize_root_start()
     29 {
     30 	# if ! checkyesno $rcvar; then
     31 	# 	echo "Not resizing $rootmp: resize_root must be set to YES/yes/..."
     32 	# 	return
     33 	# fi
     34 
     35 	trap : 2 		# Ignore SIGINT, SIGQUIT, so we
     36 	trap : 3		# enter single-user mode on failure.
     37 
     38 	# Do nothing if root file system is not mentioned in /etc/fstab, or if
     39 	# root file system seems to be a network mount, or if root file system
     40 	# is not ffs or if logging is enabled.
     41 	rootdev=""
     42 	while read fs_spec fs_file fs_vfstype fs_mntops fs_freq fs_passno
     43 	do
     44 		# skip comment or blank line
     45 		case "${fs_spec}" in
     46 		\#*|'') continue ;;
     47 		esac
     48 
     49 		# skip non-root
     50 		if [ "${fs_file}" != "$rootmp" ]; then
     51 			continue
     52 		fi
     53 
     54 		if [ "${fs_vfstype}" != "ffs" ]; then
     55 			echo "Not resizing $rootmp: not an ffs file system"
     56 			return
     57 		fi
     58 
     59 		case "${fs_spec}" in
     60 		*:*)
     61 			echo "Not resizing $rootmp: network mount"
     62 			return
     63 			;;
     64 		esac
     65 
     66 		for opt in $(split_options "${fs_mntops}"); do
     67 			if [ "$opt" = "log" ];  then
     68 				echo "Not resizing $rootmp: logging unsupported"
     69 				return
     70 			fi
     71 		done
     72 
     73 		rootdev=${fs_spec%/*}/r${fs_spec##*/}
     74 		break
     75 	done < "${fstab_file}"
     76 
     77 	if [ -z "$rootdev" ]; then
     78 		echo "Not resizing $rootmp: not listed in ${fstab_file}"
     79 		return
     80 	fi
     81 
     82 	if resize_ffs -c $rootdev; then
     83 		echo "Resizing $rootmp"
     84 		if ! resize_ffs -y $rootdev; then
     85 		    echo "Error resizing root."
     86 		    stop_boot
     87 		fi
     88 	else
     89 		echo "Not resizing $rootmp: already correct size"
     90 	fi
     91 	return
     92 }
     93 
     94 load_rc_config $name
     95 run_rc_command "$1"
     96