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1 1 # rpi23-gen-image
2 2 ## Introduction
3 3 `rpi23-gen-image.sh` is an advanced Debian Linux bootstrapping shell script for generating Debian OS images for Raspberry Pi 2 (RPi2) and Raspberry Pi 3 (RPi3) computers. The script at this time supports the bootstrapping of the Debian (armhf) releases `jessie` and `stretch`. Raspberry Pi 3 images are currently generated for 32-bit mode only.
4 4
5 5 ## Build dependencies
6 6 The following list of Debian packages must be installed on the build system because they are essentially required for the bootstrapping process. The script will check if all required packages are installed and missing packages will be installed automatically if confirmed by the user.
7 7
8 8 ```debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc```
9 9
10 10 It is recommended to configure the `rpi23-gen-image.sh` script to build and install the latest Raspberry Pi Linux kernel. For the RPi3 this is mandetory. Kernel compilation and linking will be performed on the build system using an ARM (armhf) cross-compiler toolchain.
11 11
12 12 The script has been tested using the default `crossbuild-essential-armhf` toolchain meta package on Debian Linux `jessie` and `stretch` build systems. Please check the [Debian CrossToolchains Wiki](https://wiki.debian.org/CrossToolchains) for futher information.
13 13
14 14 If a Debian Linux `jessie` build system is used it will be required to add the [Debian Cross-toolchains repository](http://emdebian.org/tools/debian/) first:
15 15
16 16 ```
17 17 echo "deb http://emdebian.org/tools/debian/ jessie main" > /etc/apt/sources.list.d/crosstools.list
18 18 sudo -u nobody wget -O - http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | apt-key add -
19 19 dpkg --add-architecture armhf
20 20 apt-get update
21 21 ```
22 22
23 23 ## Command-line parameters
24 24 The script accepts certain command-line parameters to enable or disable specific OS features, services and configuration settings. These parameters are passed to the `rpi23-gen-image.sh` script via (simple) shell-variables. Unlike environment shell-variables (simple) shell-variables are defined at the beginning of the command-line call of the `rpi23-gen-image.sh` script.
25 25
26 26 #####Command-line examples:
27 27 ```shell
28 28 ENABLE_UBOOT=true ./rpi23-gen-image.sh
29 29 ENABLE_CONSOLE=false ENABLE_IPV6=false ./rpi23-gen-image.sh
30 30 ENABLE_WM=xfce4 ENABLE_FBTURBO=true ENABLE_MINBASE=true ./rpi23-gen-image.sh
31 31 ENABLE_HARDNET=true ENABLE_IPTABLES=true /rpi23-gen-image.sh
32 32 APT_SERVER=ftp.de.debian.org APT_PROXY="http://127.0.0.1:3142/" ./rpi23-gen-image.sh
33 33 ENABLE_MINBASE=true ./rpi23-gen-image.sh
34 34 BUILD_KERNEL=true ENABLE_MINBASE=true ENABLE_IPV6=false ./rpi23-gen-image.sh
35 35 BUILD_KERNEL=true KERNELSRC_DIR=/tmp/linux ./rpi23-gen-image.sh
36 36 ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
37 37 ENABLE_CRYPTFS=true CRYPTFS_PASSWORD=changeme EXPANDROOT=false ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
38 38 RELEASE=stretch BUILD_KERNEL=true ./rpi23-gen-image.sh
39 39 RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
40 40 RELEASE=stretch RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
41 41 ```
42 42
43 43 #### APT settings:
44 44 ##### `APT_SERVER`="ftp.debian.org"
45 45 Set Debian packages server address. Choose a server from the list of Debian worldwide [mirror sites](https://www.debian.org/mirror/list). Using a nearby server will probably speed-up all required downloads within the bootstrapping process.
46 46
47 47 ##### `APT_PROXY`=""
48 48 Set Proxy server address. Using a local Proxy-Cache like `apt-cacher-ng` will speed-up the bootstrapping process because all required Debian packages will only be downloaded from the Debian mirror site once.
49 49
50 50 ##### `APT_INCLUDES`=""
51 51 A comma separated list of additional packages to be installed during bootstrapping.
52 52
53 53 #### General system settings:
54 54 ##### `RPI_MODEL`=2
55 55 Specifiy the target Raspberry Pi hardware model. The script at this time supports the Raspberry Pi models `2` and `3`. `BUILD_KERNEL`=true will automatically be set if the Raspberry Pi model `3` is used.
56 56
57 57 ##### `RELEASE`="jessie"
58 58 Set the desired Debian release name. The script at this time supports the bootstrapping of the Debian releases "jessie" and "stretch". `BUILD_KERNEL`=true will automatically be set if the Debian release `stretch` is used.
59 59
60 60 ##### `HOSTNAME`="rpi$RPI_MODEL-$RELEASE"
61 61 Set system host name. It's recommended that the host name is unique in the corresponding subnet.
62 62
63 63 ##### `PASSWORD`="raspberry"
64 Set system `root` password. The same password is used for the created user `pi`. It's **STRONGLY** recommended that you choose a custom password.
64 Set system `root` password. It's **STRONGLY** recommended that you choose a custom password.
65
66 ##### `USER_PASSWORD`="raspberry"
67 Set password for the created non-root user `USER_NAME`=pi. Ignored if `ENABLE_USER`=false. It's **STRONGLY** recommended that you choose a custom password.
65 68
66 69 ##### `DEFLOCAL`="en_US.UTF-8"
67 70 Set default system locale. This setting can also be changed inside the running OS using the `dpkg-reconfigure locales` command. Please note that on using this parameter the script will automatically install the required packages `locales`, `keyboard-configuration` and `console-setup`.
68 71
69 72 ##### `TIMEZONE`="Europe/Berlin"
70 73 Set default system timezone. All available timezones can be found in the `/usr/share/zoneinfo/` directory. This setting can also be changed inside the running OS using the `dpkg-reconfigure tzdata` command.
71 74
72 75 ##### `EXPANDROOT`=true
73 76 Expand the root partition and filesystem automatically on first boot.
74 77
75 78 #### Keyboard settings:
76 79 These options are used to configure keyboard layout in `/etc/default/keyboard` for console and Xorg. These settings can also be changed inside the running OS using the `dpkg-reconfigure keyboard-configuration` command.
77 80
78 81 ##### `XKB_MODEL`=""
79 82 Set the name of the model of your keyboard type.
80 83
81 84 ##### `XKB_LAYOUT`=""
82 85 Set the supported keyboard layout(s).
83 86
84 87 ##### `XKB_VARIANT`=""
85 88 Set the supported variant(s) of the keyboard layout(s).
86 89
87 90 ##### `XKB_OPTIONS`=""
88 91 Set extra xkb configuration options.
89 92
90 93 #### Networking settings (DHCP):
91 94 This parameter is used to set up networking auto configuration in `/etc/systemd/network/eth.network`. The default location of network configuration files in the Debian `stretch` release was changed to `/lib/systemd/network`.`
92 95
93 96 #####`ENABLE_DHCP`=true
94 97 Set the system to use DHCP. This requires an DHCP server.
95 98
96 99 #### Networking settings (static):
97 100 These parameters are used to set up a static networking configuration in `/etc/systemd/network/eth.network`. The following static networking parameters are only supported if `ENABLE_DHCP` was set to `false`. The default location of network configuration files in the Debian `stretch` release was changed to `/lib/systemd/network`.
98 101
99 102 #####`NET_ADDRESS`=""
100 103 Set a static IPv4 or IPv6 address and its prefix, separated by "/", eg. "192.169.0.3/24".
101 104
102 105 #####`NET_GATEWAY`=""
103 106 Set the IP address for the default gateway.
104 107
105 108 #####`NET_DNS_1`=""
106 109 Set the IP address for the first DNS server.
107 110
108 111 #####`NET_DNS_2`=""
109 112 Set the IP address for the second DNS server.
110 113
111 114 #####`NET_DNS_DOMAINS`=""
112 115 Set the default DNS search domains to use for non fully qualified host names.
113 116
114 117 #####`NET_NTP_1`=""
115 118 Set the IP address for the first NTP server.
116 119
117 120 #####`NET_NTP_2`=""
118 121 Set the IP address for the second NTP server.
119 122
120 123 #### Basic system features:
121 124 ##### `ENABLE_CONSOLE`=true
122 125 Enable serial console interface. Recommended if no monitor or keyboard is connected to the RPi2/3. In case of problems fe. if the network (auto) configuration failed - the serial console can be used to access the system.
123 126
124 127 ##### `ENABLE_IPV6`=true
125 128 Enable IPv6 support. The network interface configuration is managed via systemd-networkd.
126 129
127 130 ##### `ENABLE_SSHD`=true
128 131 Install and enable OpenSSH service. The default configuration of the service doesn't allow `root` to login. Please use the user `pi` instead and `su -` or `sudo` to execute commands as root.
129 132
130 133 ##### `ENABLE_NONFREE`=false
131 134 Allow the installation of non-free Debian packages that do not comply with the DFSG. This is required to install closed-source firmware binary blobs.
132 135
133 136 ##### `ENABLE_WIRELESS`=false
134 137 Download and install the [closed-source firmware binary blob](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm) that is required to run the internal wireless interface of the Raspberry Pi model `3`. This parameter is ignored if the specified `RPI_MODEL` is not `3`.
135 138
136 139 ##### `ENABLE_RSYSLOG`=true
137 140 If set to false, disable and uninstall rsyslog (so logs will be available only
138 141 in journal files)
139 142
140 143 ##### `ENABLE_SOUND`=true
141 144 Enable sound hardware and install Advanced Linux Sound Architecture.
142 145
143 146 ##### `ENABLE_HWRANDOM`=true
144 147 Enable Hardware Random Number Generator. Strong random numbers are important for most network based communications that use encryption. It's recommended to be enabled.
145 148
146 149 ##### `ENABLE_MINGPU`=false
147 150 Minimize the amount of shared memory reserved for the GPU. It doesn't seem to be possible to fully disable the GPU.
148 151
149 152 ##### `ENABLE_DBUS`=true
150 153 Install and enable D-Bus message bus. Please note that systemd should work without D-bus but it's recommended to be enabled.
151 154
152 155 ##### `ENABLE_XORG`=false
153 156 Install Xorg open-source X Window System.
154 157
155 158 ##### `ENABLE_WM`=""
156 159 Install a user defined window manager for the X Window System. To make sure all X related package dependencies are getting installed `ENABLE_XORG` will automatically get enabled if `ENABLE_WM` is used. The `rpi23-gen-image.sh` script has been tested with the following list of window managers: `blackbox`, `openbox`, `fluxbox`, `jwm`, `dwm`, `xfce4`, `awesome`.
157 160
158 161 #### Advanced system features:
159 162 ##### `ENABLE_MINBASE`=false
160 163 Use debootstrap script variant `minbase` which only includes essential packages and apt. This will reduce the disk usage by about 65 MB.
161 164
162 165 ##### `ENABLE_REDUCE`=false
163 166 Reduce the disk space usage by deleting packages and files. See `REDUCE_*` parameters for detailed information.
164 167
165 168 ##### `ENABLE_UBOOT`=false
166 169 Replace the default RPi2/3 second stage bootloader (bootcode.bin) with [U-Boot bootloader](http://git.denx.de/?p=u-boot.git;a=summary). U-Boot can boot images via the network using the BOOTP/TFTP protocol.
167 170
168 171 ##### `ENABLE_FBTURBO`=false
169 172 Install and enable the [hardware accelerated Xorg video driver](https://github.com/ssvb/xf86-video-fbturbo) `fbturbo`. Please note that this driver is currently limited to hardware accelerated window moving and scrolling.
170 173
171 174 ##### `ENABLE_IPTABLES`=false
172 175 Enable iptables IPv4/IPv6 firewall. Simplified ruleset: Allow all outgoing connections. Block all incoming connections except to OpenSSH service.
173 176
174 177 ##### `ENABLE_USER`=true
175 Create non-root user with password raspberry. Unless overridden with `USER_NAME`=user, username will be `pi`.
178 Create non-root user with password `USER_PASSWORD`=raspberry. Unless overridden with `USER_NAME`=user, username will be `pi`.
176 179
177 180 ##### `USER_NAME`=pi
178 181 Non-root user to create. Ignored if `ENABLE_USER`=false
179 182
180 183 ##### `ENABLE_ROOT`=false
181 184 Set root user password so root login will be enabled
182 185
183 186 ##### `ENABLE_ROOT_SSH`=true
184 187 Enable password root login via SSH. May be a security risk with default
185 188 password, use only in trusted environments.
186 189
187 190 ##### `ENABLE_HARDNET`=false
188 191 Enable IPv4/IPv6 network stack hardening settings.
189 192
190 193 ##### `ENABLE_SPLITFS`=false
191 194 Enable having root partition on an USB drive by creating two image files: one for the `/boot/firmware` mount point, and another for `/`.
192 195
193 196 ##### `CHROOT_SCRIPTS`=""
194 197 Path to a directory with scripts that should be run in the chroot before the image is finally built. Every executable file in this directory is run in lexicographical order.
195 198
196 199 ##### `ENABLE_INITRAMFS`=false
197 200 Create an initramfs that that will be loaded during the Linux startup process. `ENABLE_INITRAMFS` will automatically get enabled if `ENABLE_CRYPTFS`=true. This parameter will be ignored if `BUILD_KERNEL`=false.
198 201
199 202 ##### `ENABLE_IFNAMES`=true
200 203 Enable automatic assignment of predictable, stable network interface names for all local Ethernet, WLAN interfaces. This might create complex and long interface names. This parameter is only supported if the Debian release `stretch` is used.
201 204
202 205 #### Kernel compilation:
203 206 ##### `BUILD_KERNEL`=false
204 207 Build and install the latest RPi2/3 Linux kernel. Currently only the default RPi2/3 kernel configuration is used. `BUILD_KERNEL`=true will automatically be set if the Raspberry Pi model `3` is used.
205 208
206 209 ##### `KERNEL_REDUCE`=false
207 210 Reduce the size of the generated kernel by removing unwanted device, network and filesystem drivers (experimental).
208 211
209 212 ##### `KERNEL_THREADS`=1
210 213 Number of parallel kernel building threads. If the parameter is left untouched the script will automatically determine the number of CPU cores to set the number of parallel threads to speed the kernel compilation.
211 214
212 215 ##### `KERNEL_HEADERS`=true
213 216 Install kernel headers with built kernel.
214 217
215 218 ##### `KERNEL_MENUCONFIG`=false
216 219 Start `make menuconfig` interactive menu-driven kernel configuration. The script will continue after `make menuconfig` was terminated.
217 220
218 221 ##### `KERNEL_REMOVESRC`=true
219 222 Remove all kernel sources from the generated OS image after it was built and installed.
220 223
221 224 ##### `KERNELSRC_DIR`=""
222 225 Path to a directory of [RaspberryPi Linux kernel sources](https://github.com/raspberrypi/linux) that will be copied, configured, build and installed inside the chroot.
223 226
224 227 ##### `KERNELSRC_CLEAN`=false
225 228 Clean the existing kernel sources directory `KERNELSRC_DIR` (using `make mrproper`) after it was copied to the chroot and before the compilation of the kernel has started. This parameter will be ignored if no `KERNELSRC_DIR` was specified or if `KERNELSRC_PREBUILT`=true.
226 229
227 230 ##### `KERNELSRC_CONFIG`=true
228 231 Run `make bcm2709_defconfig` (and optional `make menuconfig`) to configure the kernel sources before building. This parameter is automatically set to `true` if no existing kernel sources directory was specified using `KERNELSRC_DIR`. This parameter is ignored if `KERNELSRC_PREBUILT`=true.
229 232
230 233 ##### `KERNELSRC_USRCONFIG`=""
231 234 Copy own config file to kernel `.config`. If `KERNEL_MENUCONFIG`=true then running after copy.
232 235
233 236 ##### `KERNELSRC_PREBUILT`=false
234 237 With this parameter set to true the script expects the existing kernel sources directory to be already successfully cross-compiled. The parameters `KERNELSRC_CLEAN`, `KERNELSRC_CONFIG`, `KERNELSRC_USRCONFIG` and `KERNEL_MENUCONFIG` are ignored and no kernel compilation tasks are performed.
235 238
236 239 ##### `RPI_FIRMWARE_DIR`=""
237 240 The directory containing a local copy of the firmware from the [RaspberryPi firmware project](https://github.com/raspberrypi/firmware). Default is to download the latest firmware directly from the project.
238 241
239 242 #### Reduce disk usage:
240 243 The following list of parameters is ignored if `ENABLE_REDUCE`=false.
241 244
242 245 ##### `REDUCE_APT`=true
243 246 Configure APT to use compressed package repository lists and no package caching files.
244 247
245 248 ##### `REDUCE_DOC`=true
246 249 Remove all doc files (harsh). Configure APT to not include doc files on future `apt-get` package installations.
247 250
248 251 ##### `REDUCE_MAN`=true
249 252 Remove all man pages and info files (harsh). Configure APT to not include man pages on future `apt-get` package installations.
250 253
251 254 ##### `REDUCE_VIM`=false
252 255 Replace `vim-tiny` package by `levee` a tiny vim clone.
253 256
254 257 ##### `REDUCE_BASH`=false
255 258 Remove `bash` package and switch to `dash` shell (experimental).
256 259
257 260 ##### `REDUCE_HWDB`=true
258 261 Remove PCI related hwdb files (experimental).
259 262
260 263 ##### `REDUCE_SSHD`=true
261 264 Replace `openssh-server` with `dropbear`.
262 265
263 266 ##### `REDUCE_LOCALE`=true
264 267 Remove all `locale` translation files.
265 268
266 269 #### Encrypted root partition:
267 270
268 271 ##### `ENABLE_CRYPTFS`=false
269 272 Enable full system encryption with dm-crypt. Setup a fully LUKS encrypted root partition (aes-xts-plain64:sha512) and generate required initramfs. The /boot directory will not be encrypted. This parameter will be ignored if `BUILD_KERNEL`=false. `ENABLE_CRYPTFS` is experimental. SSH-to-initramfs is currently not supported but will be soon - feel free to help.
270 273
271 274 ##### `CRYPTFS_PASSWORD`=""
272 275 Set password of the encrypted root partition. This parameter is mandatory if `ENABLE_CRYPTFS`=true.
273 276
274 277 ##### `CRYPTFS_MAPPING`="secure"
275 278 Set name of dm-crypt managed device-mapper mapping.
276 279
277 280 ##### `CRYPTFS_CIPHER`="aes-xts-plain64:sha512"
278 281 Set cipher specification string. `aes-xts*` ciphers are strongly recommended.
279 282
280 283 ##### `CRYPTFS_XTSKEYSIZE`=512
281 284 Sets key size in bits. The argument has to be a multiple of 8.
282 285
283 286 ## Understanding the script
284 287 The functions of this script that are required for the different stages of the bootstrapping are split up into single files located inside the `bootstrap.d` directory. During the bootstrapping every script in this directory gets executed in lexicographical order:
285 288
286 289 | Script | Description |
287 290 | --- | --- |
288 291 | `10-bootstrap.sh` | Debootstrap basic system |
289 292 | `11-apt.sh` | Setup APT repositories |
290 293 | `12-locale.sh` | Setup Locales and keyboard settings |
291 294 | `13-kernel.sh` | Build and install RPi2/3 Kernel |
292 295 | `20-networking.sh` | Setup Networking |
293 296 | `21-firewall.sh` | Setup Firewall |
294 297 | `30-security.sh` | Setup Users and Security settings |
295 298 | `31-logging.sh` | Setup Logging |
296 299 | `41-uboot.sh` | Build and Setup U-Boot |
297 300 | `42-fbturbo.sh` | Build and Setup fbturbo Xorg driver |
298 301 | `50-firstboot.sh` | First boot actions |
299 302 | `99-reduce.sh` | Reduce the disk space usage |
300 303
301 304 All the required configuration files that will be copied to the generated OS image are located inside the `files` directory. It is not recommended to modify these configuration files manually.
302 305
303 306 | Directory | Description |
304 307 | --- | --- |
305 308 | `apt` | APT management configuration files |
306 309 | `boot` | Boot and RPi2/3 configuration files |
307 310 | `dpkg` | Package Manager configuration |
308 311 | `etc` | Configuration files and rc scripts |
309 312 | `firstboot` | Scripts that get executed on first boot |
310 313 | `initramfs` | Initramfs scripts |
311 314 | `iptables` | Firewall configuration files |
312 315 | `locales` | Locales configuration |
313 316 | `modules` | Kernel Modules configuration |
314 317 | `mount` | Fstab configuration |
315 318 | `network` | Networking configuration files |
316 319 | `sysctl.d` | Swapping and Network Hardening configuration |
317 320 | `xorg` | fbturbo Xorg driver configuration |
318 321
319 322 Debian custom packages, i.e. those not in the debian repositories, can be installed by placing them in the `packages` directory. They are installed immediately after packages from the repositories are installed. Any dependencies listed in the custom packages will be downloaded automatically from the repositories. Do not list these custom packages in `APT_INCLUDES`.
320 323
321 324 Scripts in the custom.d directory will be executed after all other installation is complete but before the image is created.
322 325
323 326 ## Logging of the bootstrapping process
324 327 All information related to the bootstrapping process and the commands executed by the `rpi23-gen-image.sh` script can easily be saved into a logfile. The common shell command `script` can be used for this purpose:
325 328
326 329 ```shell
327 330 script -c 'APT_SERVER=ftp.de.debian.org ./rpi23-gen-image.sh' ./build.log
328 331 ```
329 332
330 333 ## Flashing the image file
331 334 After the image file was successfully created by the `rpi23-gen-image.sh` script it can be copied to the microSD card that will be used by the RPi2/3 computer. This can be performed by using the tools `bmaptool` or `dd`. Using `bmaptool` will probably speed-up the copy process because `bmaptool` copies more wisely than `dd`.
332 335
333 336 #####Flashing examples:
334 337 ```shell
335 338 bmaptool copy ./images/jessie/2015-12-13-debian-jessie.img /dev/mmcblk0
336 339 dd bs=4M if=./images/jessie/2015-12-13-debian-jessie.img of=/dev/mmcblk0
337 340 ```
338 341 If you have set `ENABLE_SPLITFS`, copy the `-frmw` image on the microSD card, then the `-root` one on the USB drive:
339 342 ```shell
340 343 bmaptool copy ./images/jessie/2015-12-13-debian-jessie-frmw.img /dev/mmcblk0
341 344 bmaptool copy ./images/jessie/2015-12-13-debian-jessie-root.img /dev/sdc
342 345 ```
343 346
344 347 ## External links and references
345 348 * [Debian worldwide mirror sites](https://www.debian.org/mirror/list)
346 349 * [Debian Raspberry Pi 2 Wiki](https://wiki.debian.org/RaspberryPi2)
347 350 * [Official Raspberry Pi Firmware on github](https://github.com/raspberrypi/firmware)
348 351 * [Official Raspberry Pi Kernel on github](https://github.com/raspberrypi/linux)
349 352 * [U-BOOT git repository](http://git.denx.de/?p=u-boot.git;a=summary)
350 353 * [Xorg DDX driver fbturbo](https://github.com/ssvb/xf86-video-fbturbo)
351 354 * [RPi3 Wireless interface firmware](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm)
352 355 * [Collabora RPi2 Kernel precompiled](https://repositories.collabora.co.uk/debian/)
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1 1 #
2 2 # Setup users and security settings
3 3 #
4 4
5 5 # Load utility functions
6 6 . ./functions.sh
7 7
8 8 # Generate crypt(3) password string
9 9 ENCRYPTED_PASSWORD=`mkpasswd -m sha-512 "${PASSWORD}"`
10 ENCRYPTED_USER_PASSWORD=`mkpasswd -m sha-512 "${USER_PASSWORD}"`
10 11
11 12 # Setup default user
12 13 if [ "$ENABLE_USER" = true ] ; then
13 14 chroot_exec adduser --gecos $USER_NAME --add_extra_groups \
14 15 --disabled-password $USER_NAME
15 chroot_exec usermod -a -G sudo -p "${ENCRYPTED_PASSWORD}" $USER_NAME
16 chroot_exec usermod -a -G sudo -p "${ENCRYPTED_USER_PASSWORD}" $USER_NAME
16 17 fi
17 18
18 19 # Setup root password or not
19 20 if [ "$ENABLE_ROOT" = true ] ; then
20 21 chroot_exec usermod -p "${ENCRYPTED_PASSWORD}" root
21 22
22 23 if [ "$ENABLE_ROOT_SSH" = true ] ; then
23 24 sed -i "s|[#]*PermitRootLogin.*|PermitRootLogin yes|g" "${ETC_DIR}/ssh/sshd_config"
24 25 fi
25 26 else
26 27 # Set no root password to disable root login
27 28 chroot_exec usermod -p \'!\' root
28 29 fi
29 30
30 31 # Enable serial console systemd style
31 32 if [ "$ENABLE_CONSOLE" = true ] ; then
32 33 chroot_exec systemctl enable serial-getty\@ttyAMA0.service
33 34 fi
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1 1 #!/bin/sh
2 2
3 3 ########################################################################
4 4 # rpi23-gen-image.sh 2015-2016
5 5 #
6 6 # Advanced Debian "jessie" and "stretch" bootstrap script for RPi2/3
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 # Copyright (C) 2015 Jan Wagner <mail@jwagner.eu>
14 14 #
15 15 # Big thanks for patches and enhancements by 10+ github contributors!
16 16 ########################################################################
17 17
18 18 # Are we running as root?
19 19 if [ "$(id -u)" -ne "0" ] ; then
20 20 echo "error: this script must be executed with root privileges!"
21 21 exit 1
22 22 fi
23 23
24 24 # Check if ./functions.sh script exists
25 25 if [ ! -r "./functions.sh" ] ; then
26 26 echo "error: './functions.sh' required script not found!"
27 27 exit 1
28 28 fi
29 29
30 30 # Load utility functions
31 31 . ./functions.sh
32 32
33 33 # Introduce settings
34 34 set -e
35 35 echo -n -e "\n#\n# RPi2/3 Bootstrap Settings\n#\n"
36 36 set -x
37 37
38 38 # Raspberry Pi model configuration
39 39 RPI_MODEL=${RPI_MODEL:=2}
40 40 RPI2_DTB_FILE=${RPI2_DTB_FILE:=bcm2709-rpi-2-b.dtb}
41 41 RPI2_UBOOT_CONFIG=${RPI2_UBOOT_CONFIG:=rpi_2_defconfig}
42 42 RPI3_DTB_FILE=${RPI3_DTB_FILE:=bcm2710-rpi-3-b.dtb}
43 43 RPI3_UBOOT_CONFIG=${RPI3_UBOOT_CONFIG:=rpi_3_32b_defconfig}
44 44
45 45 # Debian release
46 46 RELEASE=${RELEASE:=jessie}
47 47 KERNEL_ARCH=${KERNEL_ARCH:=arm}
48 48 RELEASE_ARCH=${RELEASE_ARCH:=armhf}
49 49 CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabihf-}
50 50 COLLABORA_KERNEL=${COLLABORA_KERNEL:=3.18.0-trunk-rpi2}
51 51 KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}
52 52 KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7.img}
53 53 QEMU_BINARY=${QEMU_BINARY:=/usr/bin/qemu-arm-static}
54 54
55 55 # URLs
56 56 KERNEL_URL=${KERNEL_URL:=https://github.com/raspberrypi/linux}
57 57 FIRMWARE_URL=${FIRMWARE_URL:=https://github.com/raspberrypi/firmware/raw/master/boot}
58 58 WLAN_FIRMWARE_URL=${WLAN_FIRMWARE_URL:=https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm80211/brcm}
59 59 COLLABORA_URL=${COLLABORA_URL:=https://repositories.collabora.co.uk/debian}
60 60 FBTURBO_URL=${FBTURBO_URL:=https://github.com/ssvb/xf86-video-fbturbo.git}
61 61 UBOOT_URL=${UBOOT_URL:=git://git.denx.de/u-boot.git}
62 62
63 63 # Build directories
64 64 BASEDIR="$(pwd)/images/${RELEASE}"
65 65 BUILDDIR="${BASEDIR}/build"
66 66
67 67 # Chroot directories
68 68 R="${BUILDDIR}/chroot"
69 69 ETC_DIR="${R}/etc"
70 70 LIB_DIR="${R}/lib"
71 71 BOOT_DIR="${R}/boot/firmware"
72 72 KERNEL_DIR="${R}/usr/src/linux"
73 73 WLAN_FIRMWARE_DIR="${R}/lib/firmware/brcm"
74 74
75 75 # Firmware directory: Blank if download from github
76 76 RPI_FIRMWARE_DIR=${RPI_FIRMWARE_DIR:=""}
77 77
78 78 # General settings
79 79 HOSTNAME=${HOSTNAME:=rpi${RPI_MODEL}-${RELEASE}}
80 80 PASSWORD=${PASSWORD:=raspberry}
81 USER_PASSWORD=${USER_PASSWORD:=raspberry}
81 82 DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
82 83 TIMEZONE=${TIMEZONE:="Europe/Berlin"}
83 84 EXPANDROOT=${EXPANDROOT:=true}
84 85
85 86 # Keyboard settings
86 87 XKB_MODEL=${XKB_MODEL:=""}
87 88 XKB_LAYOUT=${XKB_LAYOUT:=""}
88 89 XKB_VARIANT=${XKB_VARIANT:=""}
89 90 XKB_OPTIONS=${XKB_OPTIONS:=""}
90 91
91 92 # Network settings (DHCP)
92 93 ENABLE_DHCP=${ENABLE_DHCP:=true}
93 94
94 95 # Network settings (static)
95 96 NET_ADDRESS=${NET_ADDRESS:=""}
96 97 NET_GATEWAY=${NET_GATEWAY:=""}
97 98 NET_DNS_1=${NET_DNS_1:=""}
98 99 NET_DNS_2=${NET_DNS_2:=""}
99 100 NET_DNS_DOMAINS=${NET_DNS_DOMAINS:=""}
100 101 NET_NTP_1=${NET_NTP_1:=""}
101 102 NET_NTP_2=${NET_NTP_2:=""}
102 103
103 104 # APT settings
104 105 APT_PROXY=${APT_PROXY:=""}
105 106 APT_SERVER=${APT_SERVER:="ftp.debian.org"}
106 107
107 108 # Feature settings
108 109 ENABLE_CONSOLE=${ENABLE_CONSOLE:=true}
109 110 ENABLE_IPV6=${ENABLE_IPV6:=true}
110 111 ENABLE_SSHD=${ENABLE_SSHD:=true}
111 112 ENABLE_NONFREE=${ENABLE_NONFREE:=false}
112 113 ENABLE_WIRELESS=${ENABLE_WIRELESS:=false}
113 114 ENABLE_SOUND=${ENABLE_SOUND:=true}
114 115 ENABLE_DBUS=${ENABLE_DBUS:=true}
115 116 ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}
116 117 ENABLE_MINGPU=${ENABLE_MINGPU:=false}
117 118 ENABLE_XORG=${ENABLE_XORG:=false}
118 119 ENABLE_WM=${ENABLE_WM:=""}
119 120 ENABLE_RSYSLOG=${ENABLE_RSYSLOG:=true}
120 121 ENABLE_USER=${ENABLE_USER:=true}
121 122 USER_NAME=${USER_NAME:="pi"}
122 123 ENABLE_ROOT=${ENABLE_ROOT:=false}
123 124 ENABLE_ROOT_SSH=${ENABLE_ROOT_SSH:=false}
124 125
125 126 # Advanced settings
126 127 ENABLE_MINBASE=${ENABLE_MINBASE:=false}
127 128 ENABLE_REDUCE=${ENABLE_REDUCE:=false}
128 129 ENABLE_UBOOT=${ENABLE_UBOOT:=false}
129 130 ENABLE_FBTURBO=${ENABLE_FBTURBO:=false}
130 131 ENABLE_HARDNET=${ENABLE_HARDNET:=false}
131 132 ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
132 133 ENABLE_SPLITFS=${ENABLE_SPLITFS:=false}
133 134 ENABLE_INITRAMFS=${ENABLE_INITRAMFS:=false}
134 135 ENABLE_IFNAMES=${ENABLE_IFNAMES:=true}
135 136
136 137 # Kernel compilation settings
137 138 BUILD_KERNEL=${BUILD_KERNEL:=false}
138 139 KERNEL_REDUCE=${KERNEL_REDUCE:=false}
139 140 KERNEL_THREADS=${KERNEL_THREADS:=1}
140 141 KERNEL_HEADERS=${KERNEL_HEADERS:=true}
141 142 KERNEL_MENUCONFIG=${KERNEL_MENUCONFIG:=false}
142 143 KERNEL_REMOVESRC=${KERNEL_REMOVESRC:=true}
143 144
144 145 # Kernel compilation from source directory settings
145 146 KERNELSRC_DIR=${KERNELSRC_DIR:=""}
146 147 KERNELSRC_CLEAN=${KERNELSRC_CLEAN:=false}
147 148 KERNELSRC_CONFIG=${KERNELSRC_CONFIG:=true}
148 149 KERNELSRC_PREBUILT=${KERNELSRC_PREBUILT:=false}
149 150
150 151 # Reduce disk usage settings
151 152 REDUCE_APT=${REDUCE_APT:=true}
152 153 REDUCE_DOC=${REDUCE_DOC:=true}
153 154 REDUCE_MAN=${REDUCE_MAN:=true}
154 155 REDUCE_VIM=${REDUCE_VIM:=false}
155 156 REDUCE_BASH=${REDUCE_BASH:=false}
156 157 REDUCE_HWDB=${REDUCE_HWDB:=true}
157 158 REDUCE_SSHD=${REDUCE_SSHD:=true}
158 159 REDUCE_LOCALE=${REDUCE_LOCALE:=true}
159 160
160 161 # Encrypted filesystem settings
161 162 ENABLE_CRYPTFS=${ENABLE_CRYPTFS:=false}
162 163 CRYPTFS_PASSWORD=${CRYPTFS_PASSWORD:=""}
163 164 CRYPTFS_MAPPING=${CRYPTFS_MAPPING:="secure"}
164 165 CRYPTFS_CIPHER=${CRYPTFS_CIPHER:="aes-xts-plain64:sha512"}
165 166 CRYPTFS_XTSKEYSIZE=${CRYPTFS_XTSKEYSIZE:=512}
166 167
167 168 # Stop the Crypto Wars
168 169 DISABLE_FBI=${DISABLE_FBI:=false}
169 170
170 171 # Chroot scripts directory
171 172 CHROOT_SCRIPTS=${CHROOT_SCRIPTS:=""}
172 173
173 174 # Packages required in the chroot build environment
174 175 APT_INCLUDES=${APT_INCLUDES:=""}
175 176 APT_INCLUDES="${APT_INCLUDES},apt-transport-https,apt-utils,ca-certificates,debian-archive-keyring,dialog,sudo,systemd,sysvinit-utils"
176 177
177 178 # Packages required for bootstrapping
178 179 REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc"
179 180 MISSING_PACKAGES=""
180 181
181 182 set +x
182 183
183 184 # Set Raspberry Pi model specific configuration
184 185 if [ "$RPI_MODEL" = 2 ] ; then
185 186 DTB_FILE=${RPI2_DTB_FILE}
186 187 UBOOT_CONFIG=${RPI2_UBOOT_CONFIG}
187 188 elif [ "$RPI_MODEL" = 3 ] ; then
188 189 DTB_FILE=${RPI3_DTB_FILE}
189 190 UBOOT_CONFIG=${RPI3_UBOOT_CONFIG}
190 191 BUILD_KERNEL=true
191 192 else
192 193 echo "error: Raspberry Pi model ${RPI_MODEL} is not supported!"
193 194 exit 1
194 195 fi
195 196
196 197 # Check if the internal wireless interface is supported by the RPi model
197 198 if [ "$ENABLE_WIRELESS" = true ] && [ "$RPI_MODEL" != 3 ] ; then
198 199 echo "error: The selected Raspberry Pi model has no internal wireless interface"
199 200 exit 1
200 201 fi
201 202
202 203 # Set compiler packages and build RPi2/3 Linux kernel if required by Debian release
203 204 if [ "$RELEASE" = "jessie" ] ; then
204 205 COMPILER_PACKAGES="linux-compiler-gcc-4.8-arm g++ make bc"
205 206 elif [ "$RELEASE" = "stretch" ] ; then
206 207 COMPILER_PACKAGES="linux-compiler-gcc-5-arm g++ make bc"
207 208 BUILD_KERNEL=true
208 209 else
209 210 echo "error: Debian release ${RELEASE} is not supported!"
210 211 exit 1
211 212 fi
212 213
213 214 # Add packages required for kernel cross compilation
214 215 if [ "$BUILD_KERNEL" = true ] ; then
215 216 REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"
216 217 fi
217 218
218 219 # Add libncurses5 to enable kernel menuconfig
219 220 if [ "$KERNEL_MENUCONFIG" = true ] ; then
220 221 REQUIRED_PACKAGES="${REQUIRED_PACKAGES} libncurses5-dev"
221 222 fi
222 223
223 224 # Stop the Crypto Wars
224 225 if [ "$DISABLE_FBI" = true ] ; then
225 226 ENABLE_CRYPTFS=true
226 227 fi
227 228
228 229 # Add cryptsetup package to enable filesystem encryption
229 230 if [ "$ENABLE_CRYPTFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then
230 231 REQUIRED_PACKAGES="${REQUIRED_PACKAGES} cryptsetup"
231 232 APT_INCLUDES="${APT_INCLUDES},cryptsetup"
232 233
233 234 if [ -z "$CRYPTFS_PASSWORD" ] ; then
234 235 echo "error: no password defined (CRYPTFS_PASSWORD)!"
235 236 exit 1
236 237 fi
237 238 ENABLE_INITRAMFS=true
238 239 fi
239 240
240 241 # Add initramfs generation tools
241 242 if [ "$ENABLE_INITRAMFS" = true ] && [ "$BUILD_KERNEL" = true ] ; then
242 243 APT_INCLUDES="${APT_INCLUDES},initramfs-tools"
243 244 fi
244 245
245 246 # Add device-tree-compiler required for building the U-Boot bootloader
246 247 if [ "$ENABLE_UBOOT" = true ] ; then
247 248 APT_INCLUDES="${APT_INCLUDES},device-tree-compiler"
248 249 fi
249 250
250 251 # Check if all required packages are installed on the build system
251 252 for package in $REQUIRED_PACKAGES ; do
252 253 if [ "`dpkg-query -W -f='${Status}' $package`" != "install ok installed" ] ; then
253 254 MISSING_PACKAGES="${MISSING_PACKAGES} $package"
254 255 fi
255 256 done
256 257
257 258 # If there are missing packages ask confirmation for install, or exit
258 259 if [ -n "$MISSING_PACKAGES" ] ; then
259 260 echo "the following packages needed by this script are not installed:"
260 261 echo "$MISSING_PACKAGES"
261 262
262 263 echo -n "\ndo you want to install the missing packages right now? [y/n] "
263 264 read confirm
264 265 [ "$confirm" != "y" ] && exit 1
265 266
266 267 # Make sure all missing required packages are installed
267 268 apt-get -qq -y install ${MISSING_PACKAGES}
268 269 fi
269 270
270 271 # Check if ./bootstrap.d directory exists
271 272 if [ ! -d "./bootstrap.d/" ] ; then
272 273 echo "error: './bootstrap.d' required directory not found!"
273 274 exit 1
274 275 fi
275 276
276 277 # Check if ./files directory exists
277 278 if [ ! -d "./files/" ] ; then
278 279 echo "error: './files' required directory not found!"
279 280 exit 1
280 281 fi
281 282
282 283 # Check if specified KERNELSRC_DIR directory exists
283 284 if [ -n "$KERNELSRC_DIR" ] && [ ! -d "$KERNELSRC_DIR" ] ; then
284 285 echo "error: '${KERNELSRC_DIR}' specified directory not found (KERNELSRC_DIR)!"
285 286 exit 1
286 287 fi
287 288
288 289 # Check if specified CHROOT_SCRIPTS directory exists
289 290 if [ -n "$CHROOT_SCRIPTS" ] && [ ! -d "$CHROOT_SCRIPTS" ] ; then
290 291 echo "error: ${CHROOT_SCRIPTS} specified directory not found (CHROOT_SCRIPTS)!"
291 292 exit 1
292 293 fi
293 294
294 295 # Check if specified device mapping already exists (will be used by cryptsetup)
295 296 if [ -r "/dev/mapping/${CRYPTFS_MAPPING}" ] ; then
296 297 echo "error: mapping /dev/mapping/${CRYPTFS_MAPPING} already exists, not proceeding"
297 298 exit 1
298 299 fi
299 300
300 301 # Don't clobber an old build
301 302 if [ -e "$BUILDDIR" ] ; then
302 303 echo "error: directory ${BUILDDIR} already exists, not proceeding"
303 304 exit 1
304 305 fi
305 306
306 307 # Setup chroot directory
307 308 mkdir -p "${R}"
308 309
309 310 # Check if build directory has enough of free disk space >512MB
310 311 if [ "$(df --output=avail ${BUILDDIR} | sed "1d")" -le "524288" ] ; then
311 312 echo "error: ${BUILDDIR} not enough space left to generate the output image!"
312 313 exit 1
313 314 fi
314 315
315 316 set -x
316 317
317 318 # Call "cleanup" function on various signals and errors
318 319 trap cleanup 0 1 2 3 6
319 320
320 321 # Add required packages for the minbase installation
321 322 if [ "$ENABLE_MINBASE" = true ] ; then
322 323 APT_INCLUDES="${APT_INCLUDES},vim-tiny,netbase,net-tools,ifupdown"
323 324 fi
324 325
325 326 # Add required locales packages
326 327 if [ "$DEFLOCAL" != "en_US.UTF-8" ] ; then
327 328 APT_INCLUDES="${APT_INCLUDES},locales,keyboard-configuration,console-setup"
328 329 fi
329 330
330 331 # Add parted package, required to get partprobe utility
331 332 if [ "$EXPANDROOT" = true ] ; then
332 333 APT_INCLUDES="${APT_INCLUDES},parted"
333 334 fi
334 335
335 336 # Add dbus package, recommended if using systemd
336 337 if [ "$ENABLE_DBUS" = true ] ; then
337 338 APT_INCLUDES="${APT_INCLUDES},dbus"
338 339 fi
339 340
340 341 # Add iptables IPv4/IPv6 package
341 342 if [ "$ENABLE_IPTABLES" = true ] ; then
342 343 APT_INCLUDES="${APT_INCLUDES},iptables"
343 344 fi
344 345
345 346 # Add openssh server package
346 347 if [ "$ENABLE_SSHD" = true ] ; then
347 348 APT_INCLUDES="${APT_INCLUDES},openssh-server"
348 349 fi
349 350
350 351 # Add alsa-utils package
351 352 if [ "$ENABLE_SOUND" = true ] ; then
352 353 APT_INCLUDES="${APT_INCLUDES},alsa-utils"
353 354 fi
354 355
355 356 # Add rng-tools package
356 357 if [ "$ENABLE_HWRANDOM" = true ] ; then
357 358 APT_INCLUDES="${APT_INCLUDES},rng-tools"
358 359 fi
359 360
360 361 # Add fbturbo video driver
361 362 if [ "$ENABLE_FBTURBO" = true ] ; then
362 363 # Enable xorg package dependencies
363 364 ENABLE_XORG=true
364 365 fi
365 366
366 367 # Add user defined window manager package
367 368 if [ -n "$ENABLE_WM" ] ; then
368 369 APT_INCLUDES="${APT_INCLUDES},${ENABLE_WM}"
369 370
370 371 # Enable xorg package dependencies
371 372 ENABLE_XORG=true
372 373 fi
373 374
374 375 # Add xorg package
375 376 if [ "$ENABLE_XORG" = true ] ; then
376 377 APT_INCLUDES="${APT_INCLUDES},xorg"
377 378 fi
378 379
379 380 # Replace selected packages with smaller clones
380 381 if [ "$ENABLE_REDUCE" = true ] ; then
381 382 # Add levee package instead of vim-tiny
382 383 if [ "$REDUCE_VIM" = true ] ; then
383 384 APT_INCLUDES="$(echo ${APT_INCLUDES} | sed "s/vim-tiny/levee/")"
384 385 fi
385 386
386 387 # Add dropbear package instead of openssh-server
387 388 if [ "$REDUCE_SSHD" = true ] ; then
388 389 APT_INCLUDES="$(echo ${APT_INCLUDES} | sed "s/openssh-server/dropbear/")"
389 390 fi
390 391 fi
391 392
392 393 # Configure kernel sources if no KERNELSRC_DIR
393 394 if [ "$BUILD_KERNEL" = true ] && [ -z "$KERNELSRC_DIR" ] ; then
394 395 KERNELSRC_CONFIG=true
395 396 fi
396 397
397 398 # Configure reduced kernel
398 399 if [ "$KERNEL_REDUCE" = true ] ; then
399 400 KERNELSRC_CONFIG=false
400 401 fi
401 402
402 403 # Execute bootstrap scripts
403 404 for SCRIPT in bootstrap.d/*.sh; do
404 405 head -n 3 "$SCRIPT"
405 406 . "$SCRIPT"
406 407 done
407 408
408 409 ## Execute custom bootstrap scripts
409 410 if [ -d "custom.d" ] ; then
410 411 for SCRIPT in custom.d/*.sh; do
411 412 . "$SCRIPT"
412 413 done
413 414 fi
414 415
415 416 # Execute custom scripts inside the chroot
416 417 if [ -n "$CHROOT_SCRIPTS" ] && [ -d "$CHROOT_SCRIPTS" ] ; then
417 418 cp -r "${CHROOT_SCRIPTS}" "${R}/chroot_scripts"
418 419 chroot_exec /bin/bash -x <<'EOF'
419 420 for SCRIPT in /chroot_scripts/* ; do
420 421 if [ -f $SCRIPT -a -x $SCRIPT ] ; then
421 422 $SCRIPT
422 423 fi
423 424 done
424 425 EOF
425 426 rm -rf "${R}/chroot_scripts"
426 427 fi
427 428
428 429 # Remove apt-utils
429 430 if [ "$RELEASE" = "jessie" ] ; then
430 431 chroot_exec apt-get purge -qq -y --force-yes apt-utils
431 432 fi
432 433
433 434 # Generate required machine-id
434 435 MACHINE_ID=$(dbus-uuidgen)
435 436 echo -n "${MACHINE_ID}" > "${R}/var/lib/dbus/machine-id"
436 437 echo -n "${MACHINE_ID}" > "${ETC_DIR}/machine-id"
437 438
438 439 # APT Cleanup
439 440 chroot_exec apt-get -y clean
440 441 chroot_exec apt-get -y autoclean
441 442 chroot_exec apt-get -y autoremove
442 443
443 444 # Unmount mounted filesystems
444 445 umount -l "${R}/proc"
445 446 umount -l "${R}/sys"
446 447
447 448 # Clean up directories
448 449 rm -rf "${R}/run/*"
449 450 rm -rf "${R}/tmp/*"
450 451
451 452 # Clean up files
452 453 rm -f "${ETC_DIR}/ssh/ssh_host_*"
453 454 rm -f "${ETC_DIR}/dropbear/dropbear_*"
454 455 rm -f "${ETC_DIR}/apt/sources.list.save"
455 456 rm -f "${ETC_DIR}/resolvconf/resolv.conf.d/original"
456 457 rm -f "${ETC_DIR}/*-"
457 458 rm -f "${ETC_DIR}/apt/apt.conf.d/10proxy"
458 459 rm -f "${ETC_DIR}/resolv.conf"
459 460 rm -f "${R}/root/.bash_history"
460 461 rm -f "${R}/var/lib/urandom/random-seed"
461 462 rm -f "${R}/initrd.img"
462 463 rm -f "${R}/vmlinuz"
463 464 rm -f "${R}${QEMU_BINARY}"
464 465
465 466 # Calculate size of the chroot directory in KB
466 467 CHROOT_SIZE=$(expr `du -s "${R}" | awk '{ print $1 }'`)
467 468
468 469 # Calculate the amount of needed 512 Byte sectors
469 470 TABLE_SECTORS=$(expr 1 \* 1024 \* 1024 \/ 512)
470 471 FRMW_SECTORS=$(expr 64 \* 1024 \* 1024 \/ 512)
471 472 ROOT_OFFSET=$(expr ${TABLE_SECTORS} + ${FRMW_SECTORS})
472 473
473 474 # The root partition is EXT4
474 475 # This means more space than the actual used space of the chroot is used.
475 476 # As overhead for journaling and reserved blocks 25% are added.
476 477 ROOT_SECTORS=$(expr $(expr ${CHROOT_SIZE} + ${CHROOT_SIZE} \/ 100 \* 25) \* 1024 \/ 512)
477 478
478 479 # Calculate required image size in 512 Byte sectors
479 480 IMAGE_SECTORS=$(expr ${TABLE_SECTORS} + ${FRMW_SECTORS} + ${ROOT_SECTORS})
480 481
481 482 # Prepare date string for image file name
482 483 DATE="$(date +%Y-%m-%d)"
483 484
484 485 # Prepare image file
485 486 if [ "$ENABLE_SPLITFS" = true ] ; then
486 487 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img" bs=512 count=${TABLE_SECTORS}
487 488 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img" bs=512 count=0 seek=${FRMW_SECTORS}
488 489 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-root.img" bs=512 count=${TABLE_SECTORS}
489 490 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}-root.img" bs=512 count=0 seek=${ROOT_SECTORS}
490 491
491 492 # Write firmware/boot partition tables
492 493 sfdisk -q -L -uS -f "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img" 2> /dev/null <<EOM
493 494 ${TABLE_SECTORS},${FRMW_SECTORS},c,*
494 495 EOM
495 496
496 497 # Write root partition table
497 498 sfdisk -q -L -uS -f "$BASEDIR/${DATE}-debian-${RELEASE}-root.img" 2> /dev/null <<EOM
498 499 ${TABLE_SECTORS},${ROOT_SECTORS},83
499 500 EOM
500 501
501 502 # Setup temporary loop devices
502 503 FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show $BASEDIR/${DATE}-debian-${RELEASE}-frmw.img)"
503 504 ROOT_LOOP="$(losetup -o 1M -f --show $BASEDIR/${DATE}-debian-${RELEASE}-root.img)"
504 505 else # ENABLE_SPLITFS=false
505 506 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=512 count=${TABLE_SECTORS}
506 507 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=512 count=0 seek=${IMAGE_SECTORS}
507 508
508 509 # Write partition table
509 510 sfdisk -q -L -uS -f "$BASEDIR/${DATE}-debian-${RELEASE}.img" 2> /dev/null <<EOM
510 511 ${TABLE_SECTORS},${FRMW_SECTORS},c,*
511 512 ${ROOT_OFFSET},${ROOT_SECTORS},83
512 513 EOM
513 514
514 515 # Setup temporary loop devices
515 516 FRMW_LOOP="$(losetup -o 1M --sizelimit 64M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
516 517 ROOT_LOOP="$(losetup -o 65M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
517 518 fi
518 519
519 520 if [ "$ENABLE_CRYPTFS" = true ] ; then
520 521 # Create dummy ext4 fs
521 522 mkfs.ext4 "$ROOT_LOOP"
522 523
523 524 # Setup password keyfile
524 525 echo -n ${CRYPTFS_PASSWORD} > .password
525 526 chmod 600 .password
526 527
527 528 # Initialize encrypted partition
528 529 echo "YES" | cryptsetup luksFormat "${ROOT_LOOP}" -c "${CRYPTFS_CIPHER}" -s "${CRYPTFS_XTSKEYSIZE}" .password
529 530
530 531 # Open encrypted partition and setup mapping
531 532 cryptsetup luksOpen "${ROOT_LOOP}" -d .password "${CRYPTFS_MAPPING}"
532 533
533 534 # Secure delete password keyfile
534 535 shred -zu .password
535 536
536 537 # Update temporary loop device
537 538 ROOT_LOOP="/dev/mapper/${CRYPTFS_MAPPING}"
538 539
539 540 # Wipe encrypted partition (encryption cipher is used for randomness)
540 541 dd if=/dev/zero of="${ROOT_LOOP}" bs=512 count=$(blockdev --getsz "${ROOT_LOOP}")
541 542 fi
542 543
543 544 # Build filesystems
544 545 mkfs.vfat "$FRMW_LOOP"
545 546 mkfs.ext4 "$ROOT_LOOP"
546 547
547 548 # Mount the temporary loop devices
548 549 mkdir -p "$BUILDDIR/mount"
549 550 mount "$ROOT_LOOP" "$BUILDDIR/mount"
550 551
551 552 mkdir -p "$BUILDDIR/mount/boot/firmware"
552 553 mount "$FRMW_LOOP" "$BUILDDIR/mount/boot/firmware"
553 554
554 555 # Copy all files from the chroot to the loop device mount point directory
555 556 rsync -a "${R}/" "$BUILDDIR/mount/"
556 557
557 558 # Unmount all temporary loop devices and mount points
558 559 cleanup
559 560
560 561 # Create block map file(s) of image(s)
561 562 if [ "$ENABLE_SPLITFS" = true ] ; then
562 563 # Create block map files for "bmaptool"
563 564 bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img"
564 565 bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}-root.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}-root.img"
565 566
566 567 # Image was successfully created
567 568 echo "$BASEDIR/${DATE}-debian-${RELEASE}-frmw.img ($(expr \( ${TABLE_SECTORS} + ${FRMW_SECTORS} \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
568 569 echo "$BASEDIR/${DATE}-debian-${RELEASE}-root.img ($(expr \( ${TABLE_SECTORS} + ${ROOT_SECTORS} \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
569 570 else
570 571 # Create block map file for "bmaptool"
571 572 bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}.img"
572 573
573 574 # Image was successfully created
574 575 echo "$BASEDIR/${DATE}-debian-${RELEASE}.img ($(expr \( ${TABLE_SECTORS} + ${FRMW_SECTORS} + ${ROOT_SECTORS} \) \* 512 \/ 1024 \/ 1024)M)" ": successfully created"
575 576 fi
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