summaryrefslogtreecommitdiff
path: root/recipes-core/multitech/overlayfs-init-jffs2/config
blob: 785f99f7838f4d152c5444c7fd4d30b346fc0c71 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
#!/bin/sh

CONFIG_DIR=/var/config
RUN_CONF_DIR=/run/config

CONFIG_PARTITION="Config"
OEM_PARTITION="OEM Config"
TABLE=$'\n'"$(cat /proc/mtd)"
if [[ $TABLE =~ [[:space:]]mtd([[:digit:]]+)[^\"]*\"$CONFIG_PARTITION\" ]] ; then
   CONFIG_MTDC=/dev/mtd${BASH_REMATCH[1]}
   CONFIG_MTDB=/dev/mtdblock${BASH_REMATCH[1]}
else
   echo "Cannot find a ${CONFIG_PARTITION} partition"
   exit 0
fi
if [[ $TABLE =~ [[:space:]]mtd([[:digit:]]+)[^\"]*\"$OEM_PARTITION\" ]] ; then
   OEM_MTDC=/dev/mtd${BASH_REMATCH[1]}
   OEM_MTDB=/dev/mtdblock${BASH_REMATCH[1]}
else
   echo "Cannot find a ${OEM_PARTITION} partition"
   exit 0
fi

CONFIG_DIR=/var/config
OEM_DIR=/var/oem

FILES="network/interfaces \
ppp/options \
ppp/pap-secrets \
ppp/chap-secrets \
ppp/peers \
"

# Files used by bluetooth or wifi.
BTWIFIFILES="\
bluetooth/ \
default/ \
dnsmasq.d/ \
hosts \
hostname \
hostapd.conf \
modprobe.d/ \
wpa_supplicant.conf \
"

# mts-io driver may not be loaded
if [[ -L /etc/default/rs9113 ]] || [[ -f /etc/default/rs9113 ]] || [[ -d /opt/rs9113 ]] ; then
	BTWIFIFILES+="default/rs9113 "
fi

# File hidden so it is not removed on hardware reset
WIFITAR=".defaults2.tar.gz"

mount_config() {
	echo "Mounting ${CONFIG_DIR}"
	mkdir -p ${CONFIG_DIR}
	mount ${CONFIG_DIR}

	# Prepare flash for JFFS2 or EXT4 if mount fails
	if [ $? -ne 0 ]; then
		echo "Creating ${CONFIG_DIR}"
		fs=$(mount -fvn ${CONFIG_DIR})
		if [[ $fs =~ [[:space:]]*(/dev/(...)[^[:space:]]*) ]] ; then
			if [[ ${BASH_REMATCH[2]} == mmc ]] ; then
				# One more check for empty
				mdev="${BASH_REMATCH[1]}"
				if [[ $(dd if=$mdev count=4 2>/dev/null | tr -d '\0' | wc -c) == 0 ]] ; then
					mkfs.ext4 -O 64bit ${mdev}
				fi
			else
				flash_erase -j ${CONFIG_MTDC} 0 0
			fi
		fi
		mount ${CONFIG_DIR}
	fi
}

mount_oem() {
	echo "Mounting ${OEM_DIR}"
	mkdir -p ${OEM_DIR}
	mount ${OEM_DIR}

	# Prepare flash for JFFS2 or EXT4 if mount fails
	# Prepare flash for JFFS2 or EXT4 if mount fails
	if [ $? -ne 0 ]; then
		echo "Creating ${OEM_DIR}"
		fs=$(mount -fvn ${OEM_DIR})
		if [[ $fs =~ [[:space:]]*(/dev/(...)[^[:space:]]*) ]] ; then
			if [[ ${BASH_REMATCH[2]} == mmc ]] ; then
				mdev="${BASH_REMATCH[1]}"
				if  [[ $(dd if=$mdev count=4 2>/dev/null | tr -d '\0' | wc -c) == 0 ]] ; then
					mkfs.ext4 -O 64bit ${mdev}
				fi
			else
				flash_erase -j ${OEM_MTDC} 0 0
			fi
		fi
		mount ${OEM_DIR}
	fi
}

# Create symlinks in directory $2
# that point to non-directory items
# in directory $1
# No recursion.
#
# /etc/default/rcS must be in the
# root file system
#
function linkdir {
    from="$1"
    to="$2"
    newdir=$(basename "$from")
    savedir=$(pwd)
    cd "${from}"
    for f in * ; do
        if [[ ${to} == /etc/default ]] && [[ $f == rcS ]] ; then
            continue
        fi
        if [[ $f == \* ]] ; then
            break
        fi
        if ! [[ -d "${to}/${f}" ]] ; then
            if ! [[ -f ${from}/${f} ]] ; then
                ln -sf "${from}/${f}" "${to}/${f}"
            fi
        else
            echo Skipping directory "$to/$f"
        fi
    done
    cd "$savedir"
}

# parameter 1     Input directory
# parameter 2     Parent of output directory
#
# The basename (final component) of parameter 1
# is created as a directory in the directory
# of parameter 2.
function copydir {
    from="$1"
    to="$2"
    newdir=$(basename "$from")
    if rmdir $from >/dev/null 2>&1 ; then
        ln -sf  "$to/$newdir" "$from"
    else
        mkdir "$to/$newdir" >/dev/null 2>&1 || true
        savedir=$(pwd)
        cd "$from"
        for f in * ; do
            if [[ $f == \* ]] ; then
                break
            fi
            if ! [[ -f "$to/$f" ]] ; then
                cannon=$(readlink "$to/${newdir}/${f}" 2>/dev/null)
                # Don't overwrite files in destination.
                if ! [[ -f ${cannon} ]] ; then
                    cp -a "${f}" "$to/${newdir}/${f}"
                fi
            fi
        done
        cd "$savedir"
    fi
}

case $1 in
	start)
		# mount config if not already mounted
		if ! grep -q " ${CONFIG_DIR} " /proc/mounts; then
			mount_config
		else
			echo "$CONFIG_DIR already mounted"
		fi

		# mount oem if specified in /etc/fstab and it isn't already mounted
		if mount -fvn "${OEM_DIR}" ; then
			if ! grep -q " ${OEM_DIR} " /proc/mounts; then
				mount_oem
			else
				echo "$OEM_DIR already mounted"
			fi
		fi

		# Default all config files if requested
		cd ${CONFIG_DIR}
		if [ -f force_defaults ]; then
			echo "Extracting default config files"
			tar -xf /etc/defaults.tar.gz
			if [[ -f ${WIFITAR} ]] ; then
				echo "Extract original wifi related files"
				tar -xvf ${WIFITAR}
			fi
			rm -f force_defaults
		fi

		# Extract any missing files
		TARFILES=$(tar -tf /etc/defaults.tar.gz)
		for file in $TARFILES; do
			if [ ! -e $file ]; then
				tar -xvf /etc/defaults.tar.gz $file
			fi
		done

		# Create links in /etc
		for file in $FILES; do
			if ! [[ -L /etc/$file ]] && ! [[ -d /etc/$file ]] ; then
				rm -rf /etc/$file
				ln -sf ${CONFIG_DIR}/$file /etc/$file
                        elif [[ -d /etc/$file ]] ; then
                            # JAK create links in directory.
                            linkdir "${CONFIG_DIR}/${file}" "/etc/${file}" 
			fi
		done
		
		# Move bluetooth wifi stuff to config directory.
		# We don't have factory defaults.
                ((dobackup=1))
		for file in ${BTWIFIFILES}; do
			if [[ -L /etc/$file ]]; then
                        	((dobackup=0))
                                break
			fi
		done
		if ((dobackup==1)) ; then
			tar -C /etc -czf ${CONFIG_DIR}/${WIFITAR} ${BTWIFIFILES}
		fi

		# For jffs2, you cannot remove a populated directory in an overlay.
                # We must copy individual files and create symlinks instead.
		for file in ${BTWIFIFILES}; do
                    isdir=0
                    # If last character is /, make the CONFIG directory.               
                    if [[ ${file: -1} == / ]] ; then
                            isdir=1
                            file=${file%?}
                            if ! [[ -d ${CONFIG_DIR}/$file ]] ; then   
                                    rm -f ${CONFIG_DIR}/$file 2>/dev/null || true
                                    mkdir ${CONFIG_DIR}/$file                    
                            fi                                                   
                            if [[ -d ${file} ]] ; then
                                copydir "/etc/${file}" "${CONFIG_DIR}"
                            fi
                    fi    
                    
                    if ((isdir == 0)); then
                            dir=$(dirname $file)
                            if [[ $dir != '.' ]] ; then
                                    mkdir -p "$dir"
                            fi
                            rm -rf old
                            mkdir old
                            if ! [[ -f $file ]] ; then
                                # Need to preserve old files which is difficult with busybox!
                                if [[ -d $file ]] || [[ -f $file ]] ; then
                                        cp --parents -a $file old || true
                                fi
                                (
                                    cd /etc
                                    if [[ -d $file ]] || [[ -f $file ]] ; then
                                        cp --parents -a $file ${CONFIG_DIR} || true
                                    fi
                                )
                                (
                                    cd old
                                    if [[ -d $file ]] || [[ -f $file ]] ; then
                                        cp --parents -a $file .. || true
                                    fi
                                )
                                rm -rf old
                            fi
                            rm -rf /etc/$file
                            ln -sf ${CONFIG_DIR}/$file /etc/$file
                    else
                        rm -f "/etc/${file}/*"
                        linkdir "${CONFIG_DIR}/${file}" "/etc/${file}"
                    fi
		done
	;;

	*)
		echo "Usage: $0 {start}"
		exit 2
	;;

esac