##// END OF EJS Templates
fix: removed dead man exit
Jan Wagner -
r9:b95e309600c1
parent child
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@@ -1,762 +1,761
1 1 #!/bin/sh
2 2
3 3 ########################################################################
4 4 # rpi2-gen-image.sh ver2a 12/2015
5 5 #
6 6 # Advanced debian "jessie" bootstrap script for RPi2
7 7 #
8 8 # This program is free software; you can redistribute it and/or
9 9 # modify it under the terms of the GNU General Public License
10 10 # as published by the Free Software Foundation; either version 2
11 11 # of the License, or (at your option) any later version.
12 12 #
13 13 # some parts based on rpi2-build-image:
14 14 # Copyright (C) 2015 Ryan Finnie <ryan@finnie.org>
15 15 # Copyright (C) 2015 Luca Falavigna <dktrkranz@debian.org>
16 16 ########################################################################
17 17
18 18 cleanup (){
19 19 set +x
20 20 set +e
21 21 echo "removing temporary mount points ..."
22 22 umount -l $R/proc 2> /dev/null
23 23 umount -l $R/sys 2> /dev/null
24 24 umount -l $R/dev/pts 2> /dev/null
25 25 umount "$BUILDDIR/mount/boot/firmware" 2> /dev/null
26 26 umount "$BUILDDIR/mount" 2> /dev/null
27 27 losetup -d "$EXT4_LOOP" 2> /dev/null
28 28 losetup -d "$VFAT_LOOP" 2> /dev/null
29 29 trap - 0 1 2 3 6
30 30 }
31 31
32 32 set -e
33 33 set -x
34 34
35 35 RELEASE=${RELEASE:=jessie}
36 36
37 37 # Build settings
38 38 BASEDIR=./images/${RELEASE}
39 39 BUILDDIR=${BASEDIR}/build
40 40
41 41 # General settings
42 42 HOSTNAME=${HOSTNAME:=rpi2-${RELEASE}}
43 43 PASSWORD=${PASSWORD:=raspberry}
44 44 DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
45 45 TIMEZONE=${TIMEZONE:="Europe/Berlin"}
46 46
47 47 # APT settings
48 48 APT_PROXY=${APT_PROXY:=""}
49 49 APT_SERVER=${APT_SERVER:="ftp.debian.org"}
50 50
51 51 # Feature settings
52 52 ENABLE_CONSOLE=${ENABLE_CONSOLE:=true}
53 53 ENABLE_IPV6=${ENABLE_IPV6:=true}
54 54 ENABLE_SSHD=${ENABLE_SSHD:=true}
55 55 ENABLE_SOUND=${ENABLE_SOUND:=true}
56 56 ENABLE_SYSTEMD=${ENABLE_SYSTEMD:=true}
57 57 ENABLE_DBUS=${ENABLE_DBUS:=true}
58 58 ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}
59 59 ENABLE_MINGPU=${ENABLE_MINGPU:=false}
60 60 ENABLE_XORG=${ENABLE_XORG:=false}
61 61 ENABLE_FLUXBOX=${ENABLE_FLUXBOX:=false}
62 62
63 63 # Advanced settings
64 64 ENABLE_UBOOT=${ENABLE_UBOOT:=false}
65 65 ENABLE_HARDNET=${ENABLE_HARDNET:=false}
66 66 ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
67 67
68 68 # Image chroot path
69 69 R=${BUILDDIR}/chroot
70 70
71 71 # Packages required for bootstrapping
72 72 REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static dosfstools rsync bmap-tools whois git-core"
73 73
74 74 # Missing packages that need to be installed
75 75 MISSING_PACKAGES=""
76 76
77 77 # Packages required in the chroot build enviroment
78 78 APT_INCLUDES="apt-transport-https,ca-certificates,debian-archive-keyring,dialog,locales,apt-utils,vim-tiny"
79 79
80 80 set +x
81 81
82 82 # Are we running as root?
83 83 if [ "$(id -u)" -ne "0" ] ; then
84 84 echo "this script must be executed with root privileges"
85 85 exit 1
86 86 fi
87 87
88 88 # Check if all required packages are installed
89 89 for package in $REQUIRED_PACKAGES ; do
90 90 if [ "`dpkg-query -W -f='${Status}' $package`" != "install ok installed" ] ; then
91 91 MISSING_PACKAGES="$MISSING_PACKAGES $package"
92 92 fi
93 93 done
94 94
95 95 # Ask if missing packages should get installed right now
96 96 if [ -n "$MISSING_PACKAGES" ] ; then
97 97 echo "the following packages needed by this script are not installed:"
98 98 echo "$MISSING_PACKAGES"
99 99
100 100 echo -n "\ndo you want to install the missing packages right now? [y/n] "
101 101 read confirm
102 102 if [ "$confirm" != "y" ] ; then
103 103 exit 1
104 104 fi
105 105 fi
106 106
107 107 # Make sure all required packages are installed
108 108 apt-get -qq -y install ${REQUIRED_PACKAGES}
109 exit
110 109
111 110 # Don't clobber an old build
112 111 if [ -e "$BUILDDIR" ]; then
113 112 echo "directory $BUILDDIR already exists, not proceeding"
114 113 exit 1
115 114 fi
116 115
117 116 set -x
118 117
119 118 # Call "cleanup" function on various signals and errors
120 119 trap cleanup 0 1 2 3 6
121 120
122 121 # Set up chroot directory
123 122 mkdir -p $R
124 123
125 124 # Use traditional SystemV init instead of systemd services
126 125 if [ "$ENABLE_SYSTEMD" = false ] ; then
127 126 APT_INCLUDES="${APT_INCLUDES},sysvinit-core"
128 127 fi
129 128
130 129 # Add dbus package, recommended if using systemd
131 130 if [ "$ENABLE_DBUS" = true ] ; then
132 131 APT_INCLUDES="${APT_INCLUDES},dbus"
133 132 fi
134 133
135 134 # Add openssh server package
136 135 if [ "$ENABLE_SSHD" = true ] ; then
137 136 APT_INCLUDES="${APT_INCLUDES},openssh-server"
138 137 fi
139 138
140 139 # Add rng-tools package
141 140 if [ "$ENABLE_HWRANDOM" = true ] ; then
142 141 APT_INCLUDES="${APT_INCLUDES},rng-tools"
143 142 fi
144 143
145 144 # Add xorg package
146 145 if [ "$ENABLE_XORG" = true ] ; then
147 146 APT_INCLUDES="${APT_INCLUDES},xorg"
148 147 fi
149 148
150 149 # Add fluxbox package with eterm
151 150 if [ "$ENABLE_FLUXBOX" = true ] ; then
152 151 APT_INCLUDES="${APT_INCLUDES},fluxbox,eterm"
153 152 fi
154 153
155 154 if [ -z "$APT_PROXY" ] ; then
156 155 APT_PROXY="http://"
157 156 fi
158 157
159 158 # Base debootstrap (unpack only)
160 159 debootstrap --arch=armhf --foreign --include=${APT_INCLUDES} $RELEASE $R ${APT_PROXY}${APT_SERVER}/debian
161 160 cp /usr/bin/qemu-arm-static $R/usr/bin
162 161
163 162 # Remove systemd related packages from list of packages to be bootstrapped
164 163 if [ "$ENABLE_SYSTEMD" = false ] ; then
165 164 chroot $R sed -i -e 's/systemd systemd-sysv //g' /debootstrap/required
166 165 fi
167 166
168 167 # Copy debian-archive-keyring.pgp
169 168 chroot $R mkdir -p /usr/share/keyrings
170 169 cp /usr/share/keyrings/debian-archive-keyring.gpg $R/usr/share/keyrings/debian-archive-keyring.gpg
171 170
172 171 # Complete the bootstrapping proccess
173 172 chroot $R /debootstrap/debootstrap --second-stage
174 173
175 174 # Mount required filesystems
176 175 mount -t proc none $R/proc
177 176 mount -t sysfs none $R/sys
178 177 mount --bind /dev/pts $R/dev/pts
179 178
180 179 # Set up initial sources.list
181 180 cat <<EOM >$R/etc/apt/sources.list
182 181 deb http://${APT_SERVER}/debian ${RELEASE} main contrib
183 182 #deb-src http://${APT_SERVER}/debian ${RELEASE} main contrib
184 183
185 184 deb http://${APT_SERVER}/debian/ ${RELEASE}-updates main contrib
186 185 #deb-src http://${APT_SERVER}/debian/ ${RELEASE}-updates main contrib
187 186
188 187 deb http://security.debian.org/ ${RELEASE}/updates main contrib
189 188 #deb-src http://security.debian.org/ ${RELEASE}/updates main contrib
190 189
191 190 deb https://repositories.collabora.co.uk/debian ${RELEASE} rpi2
192 191 EOM
193 192
194 193 # Pin package flash-kernel to repositories.collabora.co.uk
195 194 cat <<EOM >$R/etc/apt/preferences.d/flash-kernel
196 195 Package: flash-kernel
197 196 Pin: origin repositories.collabora.co.uk
198 197 Pin-Priority: 1000
199 198 EOM
200 199
201 200 # Set up timezone
202 201 echo ${TIMEZONE} >$R/etc/timezone
203 202 LANG=C chroot $R dpkg-reconfigure -f noninteractive tzdata
204 203
205 204 # Set up default locales to "en_US.UTF-8" default
206 205 LANG=C chroot $R sed -i '/${DEFLOCAL}/s/^#//' /etc/locale.gen
207 206 LANG=C chroot $R locale-gen ${DEFLOCAL}
208 207
209 208 # Fetch APT public key "Collabora Raspbian Archive Signing Key <daniels@collabora.com>"
210 209 LANG=C chroot $R apt-key adv --keyserver hkp://pool.sks-keyservers.net --recv-keys ED4BF9140C50B1C5
211 210
212 211 # Upgrade package index and update all installed packages and changed dependencies
213 212 LANG=C chroot $R apt-get -q -y update
214 213 LANG=C chroot $R apt-get -q -y -u dist-upgrade
215 214
216 215 # Kernel installation
217 216 # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot
218 217
219 218 LANG=C chroot $R apt-get -q -y --force-yes --no-install-recommends install linux-image-3.18.0-trunk-rpi2
220 219 LANG=C chroot $R apt-get -q -y --force-yes install flash-kernel
221 220
222 221 VMLINUZ="$(ls -1 $R/boot/vmlinuz-* | sort | tail -n 1)"
223 222 [ -z "$VMLINUZ" ] && exit 1
224 223 mkdir -p $R/boot/firmware
225 224
226 225 # required boot binaries from raspberry/firmware github (commit: "kernel: Bump to 3.18.10")
227 226 wget -q -O $R/boot/firmware/bootcode.bin https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/bootcode.bin
228 227 wget -q -O $R/boot/firmware/fixup_cd.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup_cd.dat
229 228 wget -q -O $R/boot/firmware/fixup.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup.dat
230 229 wget -q -O $R/boot/firmware/fixup_x.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup_x.dat
231 230 wget -q -O $R/boot/firmware/start_cd.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start_cd.elf
232 231 wget -q -O $R/boot/firmware/start.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start.elf
233 232 wget -q -O $R/boot/firmware/start_x.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start_x.elf
234 233 cp $VMLINUZ $R/boot/firmware/kernel7.img
235 234
236 235 # Set up hosts
237 236 echo ${HOSTNAME} >$R/etc/hostname
238 237 cat <<EOM >$R/etc/hosts
239 238 127.0.0.1 localhost
240 239 127.0.1.1 ${HOSTNAME}
241 240 EOM
242 241
243 242 if [ "$ENABLE_IPV6" = true ] ; then
244 243 cat <<EOM >>$R/etc/hosts
245 244
246 245 ::1 localhost ip6-localhost ip6-loopback
247 246 ff02::1 ip6-allnodes
248 247 ff02::2 ip6-allrouters
249 248 EOM
250 249 fi
251 250
252 251 # Generate crypt(3) password string
253 252 ENCRYPTED_PASSWORD=`mkpasswd -m sha-512 ${PASSWORD}`
254 253
255 254 # Set up default user
256 255 LANG=C chroot $R adduser --gecos "Raspberry PI user" --add_extra_groups --disabled-password pi
257 256 LANG=C chroot $R usermod -a -G sudo -p "${ENCRYPTED_PASSWORD}" pi
258 257
259 258 # Set up root password
260 259 LANG=C chroot $R usermod -p "${ENCRYPTED_PASSWORD}" root
261 260
262 261
263 262 # Set up interfaces
264 263 cat <<EOM >$R/etc/network/interfaces
265 264 # interfaces(5) file used by ifup(8) and ifdown(8)
266 265 # Include files from /etc/network/interfaces.d:
267 266 source-directory /etc/network/interfaces.d
268 267
269 268 # The loopback network interface
270 269 auto lo
271 270 iface lo inet loopback
272 271
273 272 # The primary network interface
274 273 allow-hotplug eth0
275 274 iface eth0 inet dhcp
276 275 EOM
277 276
278 277 # Set up firmware boot cmdline
279 278 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1"
280 279
281 280 # Set up serial console support (if requested)
282 281 if [ "$ENABLE_CONSOLE" = true ] ; then
283 282 CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200"
284 283 fi
285 284
286 285 # Set up ipv6 support (if requested)
287 286 if [ "$ENABLE_IPV6" = false ] ; then
288 287 CMDLINE="${CMDLINE} ipv6.disable=1"
289 288 fi
290 289
291 290 echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt
292 291
293 292 # Set up firmware config
294 293 cat <<EOM >$R/boot/firmware/config.txt
295 294 # For more options and information see
296 295 # http://www.raspberrypi.org/documentation/configuration/config-txt.md
297 296 # Some settings may impact device functionality. See link above for details
298 297
299 298 # uncomment if you get no picture on HDMI for a default "safe" mode
300 299 #hdmi_safe=1
301 300
302 301 # uncomment this if your display has a black border of unused pixels visible
303 302 # and your display can output without overscan
304 303 #disable_overscan=1
305 304
306 305 # uncomment the following to adjust overscan. Use positive numbers if console
307 306 # goes off screen, and negative if there is too much border
308 307 #overscan_left=16
309 308 #overscan_right=16
310 309 #overscan_top=16
311 310 #overscan_bottom=16
312 311
313 312 # uncomment to force a console size. By default it will be display's size minus
314 313 # overscan.
315 314 #framebuffer_width=1280
316 315 #framebuffer_height=720
317 316
318 317 # uncomment if hdmi display is not detected and composite is being output
319 318 #hdmi_force_hotplug=1
320 319
321 320 # uncomment to force a specific HDMI mode (this will force VGA)
322 321 #hdmi_group=1
323 322 #hdmi_mode=1
324 323
325 324 # uncomment to force a HDMI mode rather than DVI. This can make audio work in
326 325 # DMT (computer monitor) modes
327 326 #hdmi_drive=2
328 327
329 328 # uncomment to increase signal to HDMI, if you have interference, blanking, or
330 329 # no display
331 330 #config_hdmi_boost=4
332 331
333 332 # uncomment for composite PAL
334 333 #sdtv_mode=2
335 334
336 335 # uncomment to overclock the arm. 700 MHz is the default.
337 336 #arm_freq=800
338 337 EOM
339 338
340 339 # Set smallest possible GPU memory allocation size: 16MB (no X)
341 340 if [ "$ENABLE_MINGPU" = true ] ; then
342 341 echo "gpu_mem=16" >>$R/boot/firmware/config.txt
343 342 fi
344 343
345 344 # Create symlinks
346 345 ln -sf firmware/config.txt $R/boot/config.txt
347 346 ln -sf firmware/cmdline.txt $R/boot/cmdline.txt
348 347
349 348 # Prepare modules-load.d directory
350 349 mkdir -p $R/lib/modules-load.d/
351 350
352 351 # Load random module on boot
353 352 if [ "$ENABLE_HWRANDOM" = true ] ; then
354 353 cat <<EOM >$R/lib/modules-load.d/rpi2.conf
355 354 bcm2708_rng
356 355 EOM
357 356 fi
358 357
359 358 # Prepare modprobe.d directory
360 359 mkdir -p $R/etc/modprobe.d/
361 360
362 361 # Blacklist sound modules
363 362 cat <<EOM >$R/etc/modprobe.d/raspi-blacklist.conf
364 363 blacklist snd_soc_core
365 364 blacklist snd_pcm
366 365 blacklist snd_pcm_dmaengine
367 366 blacklist snd_timer
368 367 blacklist snd_compress
369 368 blacklist snd_soc_pcm512x_i2c
370 369 blacklist snd_soc_pcm512x
371 370 blacklist snd_soc_tas5713
372 371 blacklist snd_soc_wm8804
373 372 EOM
374 373
375 374 # Create default fstab
376 375 cat <<EOM >$R/etc/fstab
377 376 /dev/mmcblk0p2 / ext4 noatime,nodiratime,errors=remount-ro,discard,data=writeback,commit=100 0 1
378 377 /dev/mmcblk0p1 /boot/firmware vfat defaults,noatime,nodiratime 0 2
379 378 EOM
380 379
381 380 # Avoid swapping and increase cache sizes
382 381 cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf
383 382
384 383 # Avoid swapping and increase cache sizes
385 384 vm.swappiness=1
386 385 vm.dirty_background_ratio=20
387 386 vm.dirty_ratio=40
388 387 vm.dirty_writeback_centisecs=500
389 388 vm.dirty_expire_centisecs=6000
390 389 EOM
391 390
392 391 # Enable network stack hardening
393 392 if [ "$ENABLE_HARDNET" = true ] ; then
394 393 cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf
395 394
396 395 # Enable network stack hardening
397 396 net.ipv4.tcp_timestamps=0
398 397 net.ipv4.tcp_syncookies=1
399 398 net.ipv4.conf.all.rp_filter=1
400 399 net.ipv4.conf.all.accept_redirects=0
401 400 net.ipv4.conf.all.send_redirects=0
402 401 net.ipv4.conf.all.accept_source_route=0
403 402 net.ipv4.conf.default.rp_filter=1
404 403 net.ipv4.conf.default.accept_redirects=0
405 404 net.ipv4.conf.default.send_redirects=0
406 405 net.ipv4.conf.default.accept_source_route=0
407 406 net.ipv4.conf.lo.accept_redirects=0
408 407 net.ipv4.conf.lo.send_redirects=0
409 408 net.ipv4.conf.lo.accept_source_route=0
410 409 net.ipv4.conf.eth0.accept_redirects=0
411 410 net.ipv4.conf.eth0.send_redirects=0
412 411 net.ipv4.conf.eth0.accept_source_route=0
413 412 net.ipv4.icmp_echo_ignore_broadcasts=1
414 413 net.ipv4.icmp_ignore_bogus_error_responses=1
415 414
416 415 net.ipv6.conf.all.accept_redirects=0
417 416 net.ipv6.conf.all.accept_source_route=0
418 417 net.ipv6.conf.all.router_solicitations=0
419 418 net.ipv6.conf.all.accept_ra_rtr_pref=0
420 419 net.ipv6.conf.all.accept_ra_pinfo=0
421 420 net.ipv6.conf.all.accept_ra_defrtr=0
422 421 net.ipv6.conf.all.autoconf=0
423 422 net.ipv6.conf.all.dad_transmits=0
424 423 net.ipv6.conf.all.max_addresses=1
425 424
426 425 net.ipv6.conf.default.accept_redirects=0
427 426 net.ipv6.conf.default.accept_source_route=0
428 427 net.ipv6.conf.default.router_solicitations=0
429 428 net.ipv6.conf.default.accept_ra_rtr_pref=0
430 429 net.ipv6.conf.default.accept_ra_pinfo=0
431 430 net.ipv6.conf.default.accept_ra_defrtr=0
432 431 net.ipv6.conf.default.autoconf=0
433 432 net.ipv6.conf.default.dad_transmits=0
434 433 net.ipv6.conf.default.max_addresses=1
435 434
436 435 net.ipv6.conf.lo.accept_redirects=0
437 436 net.ipv6.conf.lo.accept_source_route=0
438 437 net.ipv6.conf.lo.router_solicitations=0
439 438 net.ipv6.conf.lo.accept_ra_rtr_pref=0
440 439 net.ipv6.conf.lo.accept_ra_pinfo=0
441 440 net.ipv6.conf.lo.accept_ra_defrtr=0
442 441 net.ipv6.conf.lo.autoconf=0
443 442 net.ipv6.conf.lo.dad_transmits=0
444 443 net.ipv6.conf.lo.max_addresses=1
445 444
446 445 net.ipv6.conf.eth0.accept_redirects=0
447 446 net.ipv6.conf.eth0.accept_source_route=0
448 447 net.ipv6.conf.eth0.router_solicitations=0
449 448 net.ipv6.conf.eth0.accept_ra_rtr_pref=0
450 449 net.ipv6.conf.eth0.accept_ra_pinfo=0
451 450 net.ipv6.conf.eth0.accept_ra_defrtr=0
452 451 net.ipv6.conf.eth0.autoconf=0
453 452 net.ipv6.conf.eth0.dad_transmits=0
454 453 net.ipv6.conf.eth0.max_addresses=1
455 454 EOM
456 455
457 456 # Enable resolver warnings about spoofed addresses
458 457 cat <<EOM >>$R/etc/host.conf
459 458 spoof warn
460 459 EOM
461 460 fi
462 461
463 462 # Regenerate openssh server host keys
464 463 if [ "$ENABLE_SSHD" = true ] ; then
465 464 rm -fr $R/etc/ssh/ssh_host_*
466 465 LANG=C chroot $R dpkg-reconfigure openssh-server
467 466 fi
468 467
469 468 # Enable serial console systemd style
470 469 if [ "$ENABLE_CONSOLE" = true ] ; then
471 470 LANG=C chroot $R systemctl enable serial-getty\@ttyAMA0.service
472 471 fi
473 472
474 473 # Enable firewall based on iptables started by systemd service
475 474 if [ "$ENABLE_IPTABLES" = true ] ; then
476 475 # Create iptables configuration directory
477 476 mkdir -p "$R/etc/iptables"
478 477
479 478 # Create iptables systemd service
480 479 cat <<EOM >$R/etc/systemd/system/iptables.service
481 480 [Unit]
482 481 Description=Packet Filtering Framework
483 482 DefaultDependencies=no
484 483 After=systemd-sysctl.service
485 484 Before=sysinit.target
486 485 [Service]
487 486 Type=oneshot
488 487 ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules
489 488 ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules
490 489 ExecStop=/etc/iptables/flush-iptables.sh
491 490 RemainAfterExit=yes
492 491 [Install]
493 492 WantedBy=multi-user.target
494 493 EOM
495 494
496 495 # Create flush-table script called by iptables service
497 496 cat <<EOM >$R/etc/iptables/flush-iptables.sh
498 497 #!/bin/sh
499 498 iptables -F
500 499 iptables -X
501 500 iptables -t nat -F
502 501 iptables -t nat -X
503 502 iptables -t mangle -F
504 503 iptables -t mangle -X
505 504 iptables -P INPUT ACCEPT
506 505 iptables -P FORWARD ACCEPT
507 506 iptables -P OUTPUT ACCEPT
508 507 EOM
509 508
510 509 # Create iptables rule file
511 510 cat <<EOM >$R/etc/iptables/iptables.rules
512 511 *filter
513 512 :INPUT DROP [0:0]
514 513 :FORWARD DROP [0:0]
515 514 :OUTPUT ACCEPT [0:0]
516 515 :TCP - [0:0]
517 516 :UDP - [0:0]
518 517 :SSH - [0:0]
519 518
520 519 # Rate limit ping requests
521 520 -A INPUT -p icmp --icmp-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT
522 521 -A INPUT -p icmp --icmp-type echo-request -j DROP
523 522
524 523 # Accept established connections
525 524 -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
526 525
527 526 # Accept all traffic on loopback interface
528 527 -A INPUT -i lo -j ACCEPT
529 528
530 529 # Drop packets declared invalid
531 530 -A INPUT -m conntrack --ctstate INVALID -j DROP
532 531
533 532 # SSH rate limiting
534 533 -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH
535 534 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP
536 535 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP
537 536 -A SSH -m recent --name sshbf --set -j ACCEPT
538 537
539 538 # Send TCP and UDP connections to their respective rules chain
540 539 -A INPUT -p udp -m conntrack --ctstate NEW -j UDP
541 540 -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP
542 541
543 542 # Reject dropped packets with a RFC compliant responce
544 543 -A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
545 544 -A INPUT -p tcp -j REJECT --reject-with tcp-rst
546 545 -A INPUT -j REJECT --reject-with icmp-proto-unreachable
547 546
548 547 ## TCP PORT RULES
549 548 # -A TCP -p tcp -j LOG
550 549
551 550 ## UDP PORT RULES
552 551 # -A UDP -p udp -j LOG
553 552
554 553 COMMIT
555 554 EOM
556 555
557 556 # Reload systemd configuration and enable iptables service
558 557 LANG=C chroot $R systemctl daemon-reload
559 558 LANG=C chroot $R systemctl enable iptables.service
560 559
561 560 if [ "$ENABLE_IPV6" = true ] ; then
562 561 # Create ip6tables systemd service
563 562 cat <<EOM >$R/etc/systemd/system/ip6tables.service
564 563 [Unit]
565 564 Description=Packet Filtering Framework
566 565 DefaultDependencies=no
567 566 After=systemd-sysctl.service
568 567 Before=sysinit.target
569 568 [Service]
570 569 Type=oneshot
571 570 ExecStart=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules
572 571 ExecReload=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules
573 572 ExecStop=/etc/iptables/flush-ip6tables.sh
574 573 RemainAfterExit=yes
575 574 [Install]
576 575 WantedBy=multi-user.target
577 576 EOM
578 577
579 578 # Create ip6tables file
580 579 cat <<EOM >$R/etc/iptables/flush-ip6tables.sh
581 580 #!/bin/sh
582 581 ip6tables -F
583 582 ip6tables -X
584 583 ip6tables -Z
585 584 for table in $(</proc/net/ip6_tables_names)
586 585 do
587 586 ip6tables -t \$table -F
588 587 ip6tables -t \$table -X
589 588 ip6tables -t \$table -Z
590 589 done
591 590 ip6tables -P INPUT ACCEPT
592 591 ip6tables -P OUTPUT ACCEPT
593 592 ip6tables -P FORWARD ACCEPT
594 593 EOM
595 594
596 595 # Create ip6tables rule file
597 596 cat <<EOM >$R/etc/iptables/ip6tables.rules
598 597 *filter
599 598 :INPUT DROP [0:0]
600 599 :FORWARD DROP [0:0]
601 600 :OUTPUT ACCEPT [0:0]
602 601 :TCP - [0:0]
603 602 :UDP - [0:0]
604 603 :SSH - [0:0]
605 604
606 605 # Drop packets with RH0 headers
607 606 -A INPUT -m rt --rt-type 0 -j DROP
608 607 -A OUTPUT -m rt --rt-type 0 -j DROP
609 608 -A FORWARD -m rt --rt-type 0 -j DROP
610 609
611 610 # Rate limit ping requests
612 611 -A INPUT -p icmpv6 --icmpv6-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT
613 612 -A INPUT -p icmpv6 --icmpv6-type echo-request -j DROP
614 613
615 614 # Accept established connections
616 615 -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
617 616
618 617 # Accept all traffic on loopback interface
619 618 -A INPUT -i lo -j ACCEPT
620 619
621 620 # Drop packets declared invalid
622 621 -A INPUT -m conntrack --ctstate INVALID -j DROP
623 622
624 623 # SSH rate limiting
625 624 -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH
626 625 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP
627 626 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP
628 627 -A SSH -m recent --name sshbf --set -j ACCEPT
629 628
630 629 # Send TCP and UDP connections to their respective rules chain
631 630 -A INPUT -p udp -m conntrack --ctstate NEW -j UDP
632 631 -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP
633 632
634 633 # Reject dropped packets with a RFC compliant responce
635 634 -A INPUT -p udp -j REJECT --reject-with icmp6-adm-prohibited
636 635 -A INPUT -p tcp -j REJECT --reject-with icmp6-adm-prohibited
637 636 -A INPUT -j REJECT --reject-with icmp6-adm-prohibited
638 637
639 638 ## TCP PORT RULES
640 639 # -A TCP -p tcp -j LOG
641 640
642 641 ## UDP PORT RULES
643 642 # -A UDP -p udp -j LOG
644 643
645 644 COMMIT
646 645 EOM
647 646
648 647 # Reload systemd configuration and enable iptables service
649 648 LANG=C chroot $R systemctl daemon-reload
650 649 LANG=C chroot $R systemctl enable ip6tables.service
651 650
652 651 fi
653 652 fi
654 653
655 654 if [ "$ENABLE_UBOOT" = true ] ; then
656 655 # Fetch u-boot github
657 656 git -C $R/tmp clone git://git.denx.de/u-boot.git
658 657
659 658 # Install minimal gcc/g++ build environment and build u-boot inside chroot
660 659 LANG=C chroot $R apt-get install -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc
661 660 LANG=C chroot $R make -C /tmp/u-boot/ rpi_2_defconfig all
662 661
663 662 # Copy compiled bootloader binary and set config.txt to load it
664 663 cp $R/tmp/u-boot/u-boot.bin $R/boot/firmware/
665 664 printf "\n# boot u-boot kernel\nkernel=u-boot.bin\n" >> $R/boot/firmware/config.txt
666 665
667 666 # Set u-boot command file
668 667 cat <<EOM >$R/boot/firmware/uboot.mkimage
669 668 # Tell Linux that it is booting on a Raspberry Pi2
670 669 setenv machid 0x00000c42
671 670
672 671 # Set the kernel boot command line
673 672 setenv bootargs "earlyprintk ${CMDLINE}"
674 673
675 674 # Save these changes to u-boot's environment
676 675 saveenv
677 676
678 677 # Load the existing Linux kernel into RAM
679 678 fatload mmc 0:1 \${kernel_addr_r} kernel7.img
680 679
681 680 # Boot the kernel we have just loaded
682 681 bootz \${kernel_addr_r}
683 682 EOM
684 683
685 684 # Generate u-boot image from command file
686 685 LANG=C chroot $R mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi2 Boot Script" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr
687 686
688 687 # Remove gcc/c++ build enviroment
689 688 LANG=C chroot $R apt-get purge -y bc binutils cpp cpp-4.9 g++ g++-4.9 gcc gcc-4.9 libasan1 libatomic1 libc-dev-bin libc6-dev libcloog-isl4 libgcc-4.9-dev libgomp1 libisl10 libmpc3 libmpfr4 libstdc++-4.9-dev libubsan0 linux-compiler-gcc-4.9-arm linux-libc-dev make
690 689 fi
691 690
692 691 # Clean cached downloads
693 692 LANG=C chroot $R apt-get -y clean
694 693 LANG=C chroot $R apt-get -y autoclean
695 694 LANG=C chroot $R apt-get -y autoremove
696 695
697 696 # Unmount mounted filesystems
698 697 umount -l $R/proc
699 698 umount -l $R/sys
700 699
701 700 # Clean up files
702 701 rm -f $R/etc/apt/sources.list.save
703 702 rm -f $R/etc/resolvconf/resolv.conf.d/original
704 703 rm -rf $R/run
705 704 mkdir -p $R/run
706 705 rm -f $R/etc/*-
707 706 rm -f $R/root/.bash_history
708 707 rm -rf $R/tmp/*
709 708 rm -f $R/var/lib/urandom/random-seed
710 709 [ -L $R/var/lib/dbus/machine-id ] || rm -f $R/var/lib/dbus/machine-id
711 710 rm -f $R/etc/machine-id
712 711
713 712 # Calculate size of the chroot directory
714 713 CHROOT_SIZE=$(expr `du -s $R | awk '{ print $1 }'` / 1024)
715 714
716 715 # Calculate required image size
717 716 IMAGE_SIZE=`expr $(expr ${CHROOT_SIZE} / 1024 + 1) \* 1024`
718 717
719 718 # Calculate number of sectors for the partition
720 719 IMAGE_SECTORS=`expr $(expr ${IMAGE_SIZE} \* 1048576) / 512 - 133120`
721 720
722 721 # Prepare date string for image file name
723 722 DATE="$(date +%Y-%m-%d)"
724 723
725 724 # Prepare image file
726 725 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=1M count=1
727 726 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=1M count=0 seek=${IMAGE_SIZE}
728 727
729 728 # Write partition table
730 729 sfdisk -q -L -f "$BASEDIR/${DATE}-debian-${RELEASE}.img" <<EOM
731 730 unit: sectors
732 731
733 732 1 : start= 2048, size= 131072, Id= c, bootable
734 733 2 : start= 133120, size= ${IMAGE_SECTORS}, Id=83
735 734 3 : start= 0, size= 0, Id= 0
736 735 4 : start= 0, size= 0, Id= 0
737 736 EOM
738 737
739 738 # Set up temporary loop devices and build filesystems
740 739 VFAT_LOOP="$(losetup -o 1M --sizelimit 64M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
741 740 EXT4_LOOP="$(losetup -o 65M --sizelimit `expr ${IMAGE_SIZE} - 64`M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
742 741 mkfs.vfat "$VFAT_LOOP"
743 742 mkfs.ext4 "$EXT4_LOOP"
744 743
745 744 # Mount the temporary loop devices
746 745 mkdir -p "$BUILDDIR/mount"
747 746 mount "$EXT4_LOOP" "$BUILDDIR/mount"
748 747
749 748 mkdir -p "$BUILDDIR/mount/boot/firmware"
750 749 mount "$VFAT_LOOP" "$BUILDDIR/mount/boot/firmware"
751 750
752 751 # Copy all files from the chroot to the loop device mount point directory
753 752 rsync -a "$R/" "$BUILDDIR/mount/"
754 753
755 754 # Unmount all temporary loop devices and mount points
756 755 cleanup
757 756
758 757 # (optinal) create block map file for "bmaptool"
759 758 bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}.img"
760 759
761 760 # Image was successfully created
762 761 echo "$BASEDIR/${DATE}-debian-${RELEASE}.img (${IMAGE_SIZE})" ": successfully created"
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