1#!/bin/sh
2# Copyright (C) 2011 O.S. Systems Software LTDA.
3# Licensed on MIT
4
5rootfs_enabled() {
6	return 0
7}
8
9rootfs_run() {
10        if [ -z "$ROOTFS_DIR" ]; then
11		return
12        fi
13	C=0
14	delay=${bootparam_rootdelay:-1}
15	timeout=${bootparam_roottimeout:-5}
16	while [ ! -d $ROOTFS_DIR/dev ]; do
17		if [ $(( $C * $delay )) -gt $timeout ]; then
18			fatal "root '$bootparam_root' doesn't exist or does not contain a /dev."
19		fi
20
21		if [ -n "$bootparam_root" ]; then
22			debug "No e2fs compatible filesystem has been mounted, mounting $bootparam_root..."
23
24			if [ "`echo ${bootparam_root} | cut -c1-5`" = "UUID=" ]; then
25				root_uuid=`echo $bootparam_root | cut -c6-`
26				bootparam_root="/dev/disk/by-uuid/$root_uuid"
27			fi
28
29			if [ "`echo ${bootparam_root} | cut -c1-9`" = "PARTUUID=" ]; then
30				root_partuuid=`echo $bootparam_root | cut -c10-`
31				bootparam_root="/dev/disk/by-partuuid/$root_partuuid"
32			fi
33
34			if [ "`echo ${bootparam_root} | cut -c1-10`" = "PARTLABEL=" ]; then
35				root_partlabel=`echo $bootparam_root | cut -c11-`
36				bootparam_root="/dev/disk/by-partlabel/$root_partlabel"
37			fi
38
39			if [ "`echo ${bootparam_root} | cut -c1-10`" = "PARTLABEL=" ]; then
40				root_partlabel=`echo $bootparam_root | cut -c11-`
41				bootparam_root="/dev/disk/by-partlabel/$root_partlabel"
42			fi
43
44			if [ "`echo ${bootparam_root} | cut -c1-6`" = "LABEL=" ]; then
45				root_label=`echo $bootparam_root | cut -c7-`
46				bootparam_root="/dev/disk/by-label/$root_label"
47			fi
48
49			if [ -e "$bootparam_root" ]; then
50				flags=""
51				if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | grep -w -q "ro"; then
52					if [  -n "$bootparam_rootflags" ]; then
53						bootparam_rootflags="$bootparam_rootflags,"
54					fi
55					bootparam_rootflags="${bootparam_rootflags}ro"
56				fi
57				if [ -n "$bootparam_rootflags" ]; then
58					flags="$flags -o$bootparam_rootflags"
59				fi
60				if [ -n "$bootparam_rootfstype" ]; then
61					flags="$flags -t$bootparam_rootfstype"
62				fi
63				mount $flags $bootparam_root $ROOTFS_DIR
64				if [ -d $ROOTFS_DIR/dev ]; then
65					break
66				else
67					# It is unlikely to change, but keep trying anyway.
68					# Perhaps we pick a different device next time.
69					umount $ROOTFS_DIR
70					fi
71				fi
72		fi
73		debug "Sleeping for $delay second(s) to wait root to settle..."
74		sleep $delay
75		C=$(( $C + 1 ))
76	done
77}
78