Browse Source

[issue #25] ajout du script de read-only original https://learn.adafruit.com/read-only-raspberry-pi/

Maxime Alves LIRMM@home 3 years ago
parent
commit
6674e40129
2 changed files with 626 additions and 0 deletions
  1. 313
    0
      config/read-only-fs.sh
  2. 313
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      config/read-only-fs.sh.original

+ 313
- 0
config/read-only-fs.sh View File

@@ -0,0 +1,313 @@
1
+#!/bin/bash
2
+
3
+# CREDIT TO THESE TUTORIALS:
4
+# petr.io/en/blog/2015/11/09/read-only-raspberry-pi-with-jessie
5
+# hallard.me/raspberry-pi-read-only
6
+# k3a.me/how-to-make-raspberrypi-truly-read-only-reliable-and-trouble-free
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+
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+if [ $(id -u) -ne 0 ]; then
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+	echo "Installer must be run as root."
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+	echo "Try 'sudo bash $0'"
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+	exit 1
12
+fi
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+
14
+clear
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+
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+echo "This script configures a Raspberry Pi"
17
+echo "SD card to boot into read-only mode,"
18
+echo "obviating need for clean shutdown."
19
+echo "NO FILES ON THE CARD CAN BE CHANGED"
20
+echo "WHEN PI IS BOOTED IN THIS STATE. Either"
21
+echo "the filesystems must be remounted in"
22
+echo "read/write mode, card must be mounted"
23
+echo "R/W on another system, or an optional"
24
+echo "jumper can be used to enable read/write"
25
+echo "on boot."
26
+echo
27
+echo "Links to original tutorials are in"
28
+echo "script source. THIS IS A ONE-WAY"
29
+echo "OPERATION. THERE IS NO SCRIPT TO"
30
+echo "REVERSE THIS SETUP! ALL other system"
31
+echo "config should be complete before using"
32
+echo "this script. MAKE A BACKUP FIRST."
33
+echo
34
+echo "Run time ~5 minutes. Reboot required."
35
+echo
36
+echo -n "CONTINUE? [y/N] "
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+read
38
+if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
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+	echo "Canceled."
40
+	exit 0
41
+fi
42
+
43
+# FEATURE PROMPTS ----------------------------------------------------------
44
+# Installation doesn't begin until after all user input is taken.
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+
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+INSTALL_RW_JUMPER=0
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+INSTALL_HALT=0
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+INSTALL_WATCHDOG=0
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+
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+# Given a list of strings representing options, display each option
51
+# preceded by a number (1 to N), display a prompt, check input until
52
+# a valid number within the selection range is entered.
53
+selectN() {
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+	for ((i=1; i<=$#; i++)); do
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+		echo $i. ${!i}
56
+	done
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+	echo
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+	REPLY=""
59
+	while :
60
+	do
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+		echo -n "SELECT 1-$#: "
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+		read
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+		if [[ $REPLY -ge 1 ]] && [[ $REPLY -le $# ]]; then
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+			return $REPLY
65
+		fi
66
+	done
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+}
68
+
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+SYS_TYPES=(Pi\ 3\ /\ Pi\ Zero\ W All\ other\ models)
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+WATCHDOG_MODULES=(bcm2835_wdog bcm2708_wdog)
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+OPTION_NAMES=(NO YES)
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+
73
+echo -n "Enable boot-time read/write jumper? [y/N] "
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+read
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+if [[ "$REPLY" =~ (yes|y|Y)$ ]]; then
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+	INSTALL_RW_JUMPER=1
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+	echo -n "GPIO pin for R/W jumper: "
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+	read
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+	RW_PIN=$REPLY
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+fi
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+
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+echo -n "Install GPIO-halt utility? [y/N] "
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+read
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+if [[ "$REPLY" =~ (yes|y|Y)$ ]]; then
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+	INSTALL_HALT=1
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+	echo -n "GPIO pin for halt button: "
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+	read
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+	HALT_PIN=$REPLY
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+fi
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+
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+echo -n "Enable kernel panic watchdog? [y/N] "
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+read
93
+if [[ "$REPLY" =~ (yes|y|Y)$ ]]; then
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+	INSTALL_WATCHDOG=1
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+	echo "Target system type:"
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+	selectN "${SYS_TYPES[0]}" \
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+		"${SYS_TYPES[1]}"
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+	WD_TARGET=$?
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+fi
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+
101
+# VERIFY SELECTIONS BEFORE CONTINUING --------------------------------------
102
+
103
+echo
104
+if [ $INSTALL_RW_JUMPER -eq 1 ]; then
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+	echo "Boot-time R/W jumper: YES (GPIO$RW_PIN)"
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+else
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+	echo "Boot-time R/W jumper: NO"
108
+fi
109
+if [ $INSTALL_HALT -eq 1 ]; then
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+	echo "Install GPIO-halt: YES (GPIO$HALT_PIN)"
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+else
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+	echo "Install GPIO-halt: NO"
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+fi
114
+if [ $INSTALL_WATCHDOG -eq 1 ]; then
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+	echo "Enable watchdog: YES (${SYS_TYPES[WD_TARGET-1]})"
116
+else
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+	echo "Enable watchdog: NO"
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+fi
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+echo
120
+echo -n "CONTINUE? [y/N] "
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+read
122
+if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
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+	echo "Canceled."
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+	exit 0
125
+fi
126
+
127
+# START INSTALL ------------------------------------------------------------
128
+# All selections have been validated at this point...
129
+
130
+# Given a filename, a regex pattern to match and a replacement string:
131
+# Replace string if found, else no change.
132
+# (# $1 = filename, $2 = pattern to match, $3 = replacement)
133
+replace() {
134
+	grep $2 $1 >/dev/null
135
+	if [ $? -eq 0 ]; then
136
+		# Pattern found; replace in file
137
+		sed -i "s/$2/$3/g" $1 >/dev/null
138
+	fi
139
+}
140
+
141
+# Given a filename, a regex pattern to match and a replacement string:
142
+# If found, perform replacement, else append file w/replacement on new line.
143
+replaceAppend() {
144
+	grep $2 $1 >/dev/null
145
+	if [ $? -eq 0 ]; then
146
+		# Pattern found; replace in file
147
+		sed -i "s/$2/$3/g" $1 >/dev/null
148
+	else
149
+		# Not found; append on new line (silently)
150
+		echo $3 | sudo tee -a $1 >/dev/null
151
+	fi
152
+}
153
+
154
+# Given a filename, a regex pattern to match and a string:
155
+# If found, no change, else append file with string on new line.
156
+append1() {
157
+	grep $2 $1 >/dev/null
158
+	if [ $? -ne 0 ]; then
159
+		# Not found; append on new line (silently)
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+		echo $3 | sudo tee -a $1 >/dev/null
161
+	fi
162
+}
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+
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+# Given a filename, a regex pattern to match and a string:
165
+# If found, no change, else append space + string to last line --
166
+# this is used for the single-line /boot/cmdline.txt file.
167
+append2() {
168
+	grep $2 $1 >/dev/null
169
+	if [ $? -ne 0 ]; then
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+		# Not found; insert in file before EOF
171
+		sed -i "s/\'/ $3/g" $1 >/dev/null
172
+	fi
173
+}
174
+
175
+echo
176
+echo "Starting installation..."
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+echo "Updating package index files..."
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+apt-get update
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+
180
+echo "Removing unwanted packages..."
181
+#apt-get remove -y --force-yes --purge triggerhappy logrotate dbus \
182
+# dphys-swapfile xserver-common lightdm fake-hwclock
183
+# Let's keep dbus...that includes avahi-daemon, a la 'raspberrypi.local',
184
+# also keeping xserver & lightdm for GUI login (WIP, not working yet)
185
+apt-get remove -y --force-yes --purge triggerhappy logrotate \
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+ dphys-swapfile fake-hwclock
187
+apt-get -y --force-yes autoremove --purge
188
+
189
+# Replace log management with busybox (use logread if needed)
190
+echo "Installing ntp and busybox-syslogd..."
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+apt-get -y --force-yes install ntp busybox-syslogd; dpkg --purge rsyslog
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+
193
+echo "Configuring system..."
194
+
195
+# Install boot-time R/W jumper test if requested
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+GPIOTEST="gpio -g mode $RW_PIN up\n\
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+if [ \`gpio -g read $RW_PIN\` -eq 0 ] ; then\n\
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+\tmount -o remount,rw \/\n\
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+\tmount -o remount,rw \/boot\n\
200
+fi\n"
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+if [ $INSTALL_RW_JUMPER -ne 0 ]; then
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+	apt-get install -y --force-yes wiringpi
203
+	# Check if already present in rc.local:
204
+	grep "gpio -g read" /etc/rc.local >/dev/null
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+	if [ $? -eq 0 ]; then
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+		# Already there, but make sure pin is correct:
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+		sed -i "s/^.*gpio\ -g\ read.*$/$GPIOTEST/g" /etc/rc.local >/dev/null
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+
209
+	else
210
+		# Not there, insert before final 'exit 0'
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+		sed -i "s/^exit 0/$GPIOTEST\\nexit 0/g" /etc/rc.local >/dev/null
212
+	fi
213
+fi
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+
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+# Install watchdog if requested
216
+if [ $INSTALL_WATCHDOG -ne 0 ]; then
217
+	apt-get install -y --force-yes watchdog
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+	# $MODULE is specific watchdog module name
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+	MODULE=${WATCHDOG_MODULES[($WD_TARGET-1)]}
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+	# Add to /etc/modules, update watchdog config file
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+	append1 /etc/modules $MODULE $MODULE
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+	replace /etc/watchdog.conf "#watchdog-device" "watchdog-device"
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+	replace /etc/watchdog.conf "#max-load-1" "max-load-1"
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+	# Start watchdog at system start and start right away
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+	# Raspbian Stretch needs this package installed first
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+	apt-get install -y --force-yes insserv
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+	insserv watchdog; /etc/init.d/watchdog start
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+	# Additional settings needed on Jessie
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+	append1 /lib/systemd/system/watchdog.service "WantedBy" "WantedBy=multi-user.target"
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+	systemctl enable watchdog
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+	# Set up automatic reboot in sysctl.conf
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+	replaceAppend /etc/sysctl.conf "^.*kernel.panic.*$" "kernel.panic = 10"
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+fi
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+
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+# Install gpio-halt if requested
236
+if [ $INSTALL_HALT -ne 0 ]; then
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+	apt-get install -y --force-yes wiringpi
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+	echo "Installing gpio-halt in /usr/local/bin..."
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+	cd /tmp
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+	curl -LO https://github.com/adafruit/Adafruit-GPIO-Halt/archive/master.zip
241
+	unzip master.zip
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+	cd Adafruit-GPIO-Halt-master
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+	make
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+	mv gpio-halt /usr/local/bin
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+	cd ..
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+	rm -rf Adafruit-GPIO-Halt-master
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+
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+	# Add gpio-halt to /rc.local:
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+	grep gpio-halt /etc/rc.local >/dev/null
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+	if [ $? -eq 0 ]; then
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+		# gpio-halt already in rc.local, but make sure correct:
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+		sed -i "s/^.*gpio-halt.*$/\/usr\/local\/bin\/gpio-halt $HALT_PIN \&/g" /etc/rc.local >/dev/null
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+	else
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+		# Insert gpio-halt into rc.local before final 'exit 0'
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+		sed -i "s/^exit 0/\/usr\/local\/bin\/gpio-halt $HALT_PIN \&\\nexit 0/g" /etc/rc.local >/dev/null
256
+	fi
257
+fi
258
+
259
+# Add fastboot, noswap and/or ro to end of /boot/cmdline.txt
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+append2 /boot/cmdline.txt fastboot fastboot
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+append2 /boot/cmdline.txt noswap noswap
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+append2 /boot/cmdline.txt ro^o^t ro
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+
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+# Move /var/spool to /tmp
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+rm -rf /var/spool
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+ln -s /tmp /var/spool
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+
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+# Move /var/lib/lightdm and /var/cache/lightdm to /tmp
269
+rm -rf /var/lib/lightdm
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+rm -rf /var/cache/lightdm
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+ln -s /tmp /var/lib/lightdm
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+ln -s /tmp /var/cache/lightdm
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+
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+# Make SSH work
275
+replaceAppend /etc/ssh/sshd_config "^.*UsePrivilegeSeparation.*$" "UsePrivilegeSeparation no"
276
+# bbro method (not working in Jessie?):
277
+#rmdir /var/run/sshd
278
+#ln -s /tmp /var/run/sshd
279
+
280
+# Change spool permissions in var.conf (rondie/Margaret fix)
281
+replace /usr/lib/tmpfiles.d/var.conf "spool\s*0755" "spool 1777"
282
+
283
+# Move dhcpd.resolv.conf to tmpfs
284
+touch /tmp/dhcpcd.resolv.conf
285
+rm /etc/resolv.conf
286
+ln -s /tmp/dhcpcd.resolv.conf /etc/resolv.conf
287
+
288
+# Make edits to fstab
289
+# make / ro
290
+# tmpfs /var/log tmpfs nodev,nosuid 0 0
291
+# tmpfs /var/tmp tmpfs nodev,nosuid 0 0
292
+# tmpfs /tmp     tmpfs nodev,nosuid 0 0
293
+replace /etc/fstab "vfat\s*defaults\s" "vfat    defaults,ro "
294
+replace /etc/fstab "ext4\s*defaults,noatime\s" "ext4    defaults,noatime,ro "
295
+append1 /etc/fstab "/var/log" "tmpfs /var/log tmpfs nodev,nosuid 0 0"
296
+append1 /etc/fstab "/var/tmp" "tmpfs /var/tmp tmpfs nodev,nosuid 0 0"
297
+append1 /etc/fstab "\s/tmp"   "tmpfs /tmp    tmpfs nodev,nosuid 0 0"
298
+
299
+# PROMPT FOR REBOOT --------------------------------------------------------
300
+
301
+echo "Done."
302
+echo
303
+echo "Settings take effect on next boot."
304
+echo
305
+echo -n "REBOOT NOW? [y/N] "
306
+read
307
+if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
308
+	echo "Exiting without reboot."
309
+	exit 0
310
+fi
311
+echo "Reboot started..."
312
+reboot
313
+exit 0

+ 313
- 0
config/read-only-fs.sh.original View File

@@ -0,0 +1,313 @@
1
+#!/bin/bash
2
+
3
+# CREDIT TO THESE TUTORIALS:
4
+# petr.io/en/blog/2015/11/09/read-only-raspberry-pi-with-jessie
5
+# hallard.me/raspberry-pi-read-only
6
+# k3a.me/how-to-make-raspberrypi-truly-read-only-reliable-and-trouble-free
7
+
8
+if [ $(id -u) -ne 0 ]; then
9
+	echo "Installer must be run as root."
10
+	echo "Try 'sudo bash $0'"
11
+	exit 1
12
+fi
13
+
14
+clear
15
+
16
+echo "This script configures a Raspberry Pi"
17
+echo "SD card to boot into read-only mode,"
18
+echo "obviating need for clean shutdown."
19
+echo "NO FILES ON THE CARD CAN BE CHANGED"
20
+echo "WHEN PI IS BOOTED IN THIS STATE. Either"
21
+echo "the filesystems must be remounted in"
22
+echo "read/write mode, card must be mounted"
23
+echo "R/W on another system, or an optional"
24
+echo "jumper can be used to enable read/write"
25
+echo "on boot."
26
+echo
27
+echo "Links to original tutorials are in"
28
+echo "script source. THIS IS A ONE-WAY"
29
+echo "OPERATION. THERE IS NO SCRIPT TO"
30
+echo "REVERSE THIS SETUP! ALL other system"
31
+echo "config should be complete before using"
32
+echo "this script. MAKE A BACKUP FIRST."
33
+echo
34
+echo "Run time ~5 minutes. Reboot required."
35
+echo
36
+echo -n "CONTINUE? [y/N] "
37
+read
38
+if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
39
+	echo "Canceled."
40
+	exit 0
41
+fi
42
+
43
+# FEATURE PROMPTS ----------------------------------------------------------
44
+# Installation doesn't begin until after all user input is taken.
45
+
46
+INSTALL_RW_JUMPER=0
47
+INSTALL_HALT=0
48
+INSTALL_WATCHDOG=0
49
+
50
+# Given a list of strings representing options, display each option
51
+# preceded by a number (1 to N), display a prompt, check input until
52
+# a valid number within the selection range is entered.
53
+selectN() {
54
+	for ((i=1; i<=$#; i++)); do
55
+		echo $i. ${!i}
56
+	done
57
+	echo
58
+	REPLY=""
59
+	while :
60
+	do
61
+		echo -n "SELECT 1-$#: "
62
+		read
63
+		if [[ $REPLY -ge 1 ]] && [[ $REPLY -le $# ]]; then
64
+			return $REPLY
65
+		fi
66
+	done
67
+}
68
+
69
+SYS_TYPES=(Pi\ 3\ /\ Pi\ Zero\ W All\ other\ models)
70
+WATCHDOG_MODULES=(bcm2835_wdog bcm2708_wdog)
71
+OPTION_NAMES=(NO YES)
72
+
73
+echo -n "Enable boot-time read/write jumper? [y/N] "
74
+read
75
+if [[ "$REPLY" =~ (yes|y|Y)$ ]]; then
76
+	INSTALL_RW_JUMPER=1
77
+	echo -n "GPIO pin for R/W jumper: "
78
+	read
79
+	RW_PIN=$REPLY
80
+fi
81
+
82
+echo -n "Install GPIO-halt utility? [y/N] "
83
+read
84
+if [[ "$REPLY" =~ (yes|y|Y)$ ]]; then
85
+	INSTALL_HALT=1
86
+	echo -n "GPIO pin for halt button: "
87
+	read
88
+	HALT_PIN=$REPLY
89
+fi
90
+
91
+echo -n "Enable kernel panic watchdog? [y/N] "
92
+read
93
+if [[ "$REPLY" =~ (yes|y|Y)$ ]]; then
94
+	INSTALL_WATCHDOG=1
95
+	echo "Target system type:"
96
+	selectN "${SYS_TYPES[0]}" \
97
+		"${SYS_TYPES[1]}"
98
+	WD_TARGET=$?
99
+fi
100
+
101
+# VERIFY SELECTIONS BEFORE CONTINUING --------------------------------------
102
+
103
+echo
104
+if [ $INSTALL_RW_JUMPER -eq 1 ]; then
105
+	echo "Boot-time R/W jumper: YES (GPIO$RW_PIN)"
106
+else
107
+	echo "Boot-time R/W jumper: NO"
108
+fi
109
+if [ $INSTALL_HALT -eq 1 ]; then
110
+	echo "Install GPIO-halt: YES (GPIO$HALT_PIN)"
111
+else
112
+	echo "Install GPIO-halt: NO"
113
+fi
114
+if [ $INSTALL_WATCHDOG -eq 1 ]; then
115
+	echo "Enable watchdog: YES (${SYS_TYPES[WD_TARGET-1]})"
116
+else
117
+	echo "Enable watchdog: NO"
118
+fi
119
+echo
120
+echo -n "CONTINUE? [y/N] "
121
+read
122
+if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
123
+	echo "Canceled."
124
+	exit 0
125
+fi
126
+
127
+# START INSTALL ------------------------------------------------------------
128
+# All selections have been validated at this point...
129
+
130
+# Given a filename, a regex pattern to match and a replacement string:
131
+# Replace string if found, else no change.
132
+# (# $1 = filename, $2 = pattern to match, $3 = replacement)
133
+replace() {
134
+	grep $2 $1 >/dev/null
135
+	if [ $? -eq 0 ]; then
136
+		# Pattern found; replace in file
137
+		sed -i "s/$2/$3/g" $1 >/dev/null
138
+	fi
139
+}
140
+
141
+# Given a filename, a regex pattern to match and a replacement string:
142
+# If found, perform replacement, else append file w/replacement on new line.
143
+replaceAppend() {
144
+	grep $2 $1 >/dev/null
145
+	if [ $? -eq 0 ]; then
146
+		# Pattern found; replace in file
147
+		sed -i "s/$2/$3/g" $1 >/dev/null
148
+	else
149
+		# Not found; append on new line (silently)
150
+		echo $3 | sudo tee -a $1 >/dev/null
151
+	fi
152
+}
153
+
154
+# Given a filename, a regex pattern to match and a string:
155
+# If found, no change, else append file with string on new line.
156
+append1() {
157
+	grep $2 $1 >/dev/null
158
+	if [ $? -ne 0 ]; then
159
+		# Not found; append on new line (silently)
160
+		echo $3 | sudo tee -a $1 >/dev/null
161
+	fi
162
+}
163
+
164
+# Given a filename, a regex pattern to match and a string:
165
+# If found, no change, else append space + string to last line --
166
+# this is used for the single-line /boot/cmdline.txt file.
167
+append2() {
168
+	grep $2 $1 >/dev/null
169
+	if [ $? -ne 0 ]; then
170
+		# Not found; insert in file before EOF
171
+		sed -i "s/\'/ $3/g" $1 >/dev/null
172
+	fi
173
+}
174
+
175
+echo
176
+echo "Starting installation..."
177
+echo "Updating package index files..."
178
+apt-get update
179
+
180
+echo "Removing unwanted packages..."
181
+#apt-get remove -y --force-yes --purge triggerhappy logrotate dbus \
182
+# dphys-swapfile xserver-common lightdm fake-hwclock
183
+# Let's keep dbus...that includes avahi-daemon, a la 'raspberrypi.local',
184
+# also keeping xserver & lightdm for GUI login (WIP, not working yet)
185
+apt-get remove -y --force-yes --purge triggerhappy logrotate \
186
+ dphys-swapfile fake-hwclock
187
+apt-get -y --force-yes autoremove --purge
188
+
189
+# Replace log management with busybox (use logread if needed)
190
+echo "Installing ntp and busybox-syslogd..."
191
+apt-get -y --force-yes install ntp busybox-syslogd; dpkg --purge rsyslog
192
+
193
+echo "Configuring system..."
194
+
195
+# Install boot-time R/W jumper test if requested
196
+GPIOTEST="gpio -g mode $RW_PIN up\n\
197
+if [ \`gpio -g read $RW_PIN\` -eq 0 ] ; then\n\
198
+\tmount -o remount,rw \/\n\
199
+\tmount -o remount,rw \/boot\n\
200
+fi\n"
201
+if [ $INSTALL_RW_JUMPER -ne 0 ]; then
202
+	apt-get install -y --force-yes wiringpi
203
+	# Check if already present in rc.local:
204
+	grep "gpio -g read" /etc/rc.local >/dev/null
205
+	if [ $? -eq 0 ]; then
206
+		# Already there, but make sure pin is correct:
207
+		sed -i "s/^.*gpio\ -g\ read.*$/$GPIOTEST/g" /etc/rc.local >/dev/null
208
+
209
+	else
210
+		# Not there, insert before final 'exit 0'
211
+		sed -i "s/^exit 0/$GPIOTEST\\nexit 0/g" /etc/rc.local >/dev/null
212
+	fi
213
+fi
214
+
215
+# Install watchdog if requested
216
+if [ $INSTALL_WATCHDOG -ne 0 ]; then
217
+	apt-get install -y --force-yes watchdog
218
+	# $MODULE is specific watchdog module name
219
+	MODULE=${WATCHDOG_MODULES[($WD_TARGET-1)]}
220
+	# Add to /etc/modules, update watchdog config file
221
+	append1 /etc/modules $MODULE $MODULE
222
+	replace /etc/watchdog.conf "#watchdog-device" "watchdog-device"
223
+	replace /etc/watchdog.conf "#max-load-1" "max-load-1"
224
+	# Start watchdog at system start and start right away
225
+	# Raspbian Stretch needs this package installed first
226
+	apt-get install -y --force-yes insserv
227
+	insserv watchdog; /etc/init.d/watchdog start
228
+	# Additional settings needed on Jessie
229
+	append1 /lib/systemd/system/watchdog.service "WantedBy" "WantedBy=multi-user.target"
230
+	systemctl enable watchdog
231
+	# Set up automatic reboot in sysctl.conf
232
+	replaceAppend /etc/sysctl.conf "^.*kernel.panic.*$" "kernel.panic = 10"
233
+fi
234
+
235
+# Install gpio-halt if requested
236
+if [ $INSTALL_HALT -ne 0 ]; then
237
+	apt-get install -y --force-yes wiringpi
238
+	echo "Installing gpio-halt in /usr/local/bin..."
239
+	cd /tmp
240
+	curl -LO https://github.com/adafruit/Adafruit-GPIO-Halt/archive/master.zip
241
+	unzip master.zip
242
+	cd Adafruit-GPIO-Halt-master
243
+	make
244
+	mv gpio-halt /usr/local/bin
245
+	cd ..
246
+	rm -rf Adafruit-GPIO-Halt-master
247
+
248
+	# Add gpio-halt to /rc.local:
249
+	grep gpio-halt /etc/rc.local >/dev/null
250
+	if [ $? -eq 0 ]; then
251
+		# gpio-halt already in rc.local, but make sure correct:
252
+		sed -i "s/^.*gpio-halt.*$/\/usr\/local\/bin\/gpio-halt $HALT_PIN \&/g" /etc/rc.local >/dev/null
253
+	else
254
+		# Insert gpio-halt into rc.local before final 'exit 0'
255
+		sed -i "s/^exit 0/\/usr\/local\/bin\/gpio-halt $HALT_PIN \&\\nexit 0/g" /etc/rc.local >/dev/null
256
+	fi
257
+fi
258
+
259
+# Add fastboot, noswap and/or ro to end of /boot/cmdline.txt
260
+append2 /boot/cmdline.txt fastboot fastboot
261
+append2 /boot/cmdline.txt noswap noswap
262
+append2 /boot/cmdline.txt ro^o^t ro
263
+
264
+# Move /var/spool to /tmp
265
+rm -rf /var/spool
266
+ln -s /tmp /var/spool
267
+
268
+# Move /var/lib/lightdm and /var/cache/lightdm to /tmp
269
+rm -rf /var/lib/lightdm
270
+rm -rf /var/cache/lightdm
271
+ln -s /tmp /var/lib/lightdm
272
+ln -s /tmp /var/cache/lightdm
273
+
274
+# Make SSH work
275
+replaceAppend /etc/ssh/sshd_config "^.*UsePrivilegeSeparation.*$" "UsePrivilegeSeparation no"
276
+# bbro method (not working in Jessie?):
277
+#rmdir /var/run/sshd
278
+#ln -s /tmp /var/run/sshd
279
+
280
+# Change spool permissions in var.conf (rondie/Margaret fix)
281
+replace /usr/lib/tmpfiles.d/var.conf "spool\s*0755" "spool 1777"
282
+
283
+# Move dhcpd.resolv.conf to tmpfs
284
+touch /tmp/dhcpcd.resolv.conf
285
+rm /etc/resolv.conf
286
+ln -s /tmp/dhcpcd.resolv.conf /etc/resolv.conf
287
+
288
+# Make edits to fstab
289
+# make / ro
290
+# tmpfs /var/log tmpfs nodev,nosuid 0 0
291
+# tmpfs /var/tmp tmpfs nodev,nosuid 0 0
292
+# tmpfs /tmp     tmpfs nodev,nosuid 0 0
293
+replace /etc/fstab "vfat\s*defaults\s" "vfat    defaults,ro "
294
+replace /etc/fstab "ext4\s*defaults,noatime\s" "ext4    defaults,noatime,ro "
295
+append1 /etc/fstab "/var/log" "tmpfs /var/log tmpfs nodev,nosuid 0 0"
296
+append1 /etc/fstab "/var/tmp" "tmpfs /var/tmp tmpfs nodev,nosuid 0 0"
297
+append1 /etc/fstab "\s/tmp"   "tmpfs /tmp    tmpfs nodev,nosuid 0 0"
298
+
299
+# PROMPT FOR REBOOT --------------------------------------------------------
300
+
301
+echo "Done."
302
+echo
303
+echo "Settings take effect on next boot."
304
+echo
305
+echo -n "REBOOT NOW? [y/N] "
306
+read
307
+if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
308
+	echo "Exiting without reboot."
309
+	exit 0
310
+fi
311
+echo "Reboot started..."
312
+reboot
313
+exit 0

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