.gitlab-ci/create-rootfs.sh

   1 #!/bin/bash
   2
   3 set -ex
   4
   5 apt-get -y install --no-install-recommends \
   6     ca-certificates \
   7     initramfs-tools \
   8     libpng16-16 \
   9     strace \
  10     libsensors5 \
  11     libexpat1 \
  12     libdrm2 \
  13     libdrm-nouveau2 \
  14     firmware-qcom-media \
  15     wget \
  16     xz-utils
  17 passwd root -d
  18 chsh -s /bin/sh
  19
  20 cat > /init <<EOF
  21 #!/bin/sh
  22 export PS1=lava-shell:
  23 exec sh
  24 EOF
  25 chmod +x  /init
  26
  27 mkdir -p /lib/firmware/rtl_nic
  28 wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/rtl_nic/rtl8153a-3.fw -O /lib/firmware/rtl_nic/rtl8153a-3.fw
  29
  30 #######################################################################
  31 # Strip the image to a small minimal system without removing the debian
  32 # toolchain.
  33
  34 # xz compress firmware so it doesn't waste RAM at runtime.
  35 find /lib/firmware -type f -print0 | xargs -0r -P4 -n4 xz -T1 -C crc32
  36
  37 # Copy timezone file and remove tzdata package
  38 rm -rf /etc/localtime
  39 cp /usr/share/zoneinfo/Etc/UTC /etc/localtime
  40
  41 UNNEEDED_PACKAGES="libfdisk1
  42                    tzdata
  43                    diffutils"
  44
  45 export DEBIAN_FRONTEND=noninteractive
  46
  47 # Removing unused packages
  48 for PACKAGE in ${UNNEEDED_PACKAGES}
  49 do
  50         echo ${PACKAGE}
  51         if ! apt-get remove --purge --yes "${PACKAGE}"
  52         then
  53                 echo "WARNING: ${PACKAGE} isn't installed"
  54         fi
  55 done
  56
  57 apt-get autoremove --yes || true
  58
  59 # Dropping logs
  60 rm -rf /var/log/*
  61
  62 # Dropping documentation, localization, i18n files, etc
  63 rm -rf /usr/share/doc/*
  64 rm -rf /usr/share/locale/*
  65 rm -rf /usr/share/man
  66 rm -rf /usr/share/i18n/*
  67 rm -rf /usr/share/info/*
  68 rm -rf /usr/share/lintian/*
  69 rm -rf /usr/share/common-licenses/*
  70 rm -rf /usr/share/mime/*
  71
  72 # Dropping reportbug scripts
  73 rm -rf /usr/share/bug
  74
  75 # Drop udev hwdb not required on a stripped system
  76 rm -rf /lib/udev/hwdb.bin /lib/udev/hwdb.d/*
  77
  78 # Drop all gconv conversions && binaries
  79 rm -rf usr/bin/iconv
  80 rm -rf usr/sbin/iconvconfig
  81 rm -rf usr/lib/*/gconv/
  82
  83 # Remove libusb database
  84 rm -rf usr/sbin/update-usbids
  85 rm -rf var/lib/usbutils/usb.ids
  86 rm -rf usr/share/misc/usb.ids
  87
  88 #######################################################################
  89 # Crush into a minimal production image to be deployed via some type of image
  90 # updating system.
  91 # IMPORTANT: The Debian system is not longer functional at this point,
  92 # for example, apt and dpkg will stop working
  93
  94 UNNEEDED_PACKAGES="apt libapt-pkg5.0 "\
  95 "ncurses-bin ncurses-base libncursesw5 libncurses5 "\
  96 "perl-base "\
  97 "debconf libdebconfclient0 "\
  98 "e2fsprogs e2fslibs libfdisk1 "\
  99 "insserv "\
 100 "udev "\
 101 "init-system-helpers "\
 102 "bash "\
 103 "cpio "\
 104 "xz-utils "\
 105 "passwd "\
 106 "libsemanage1 libsemanage-common "\
 107 "libsepol1 "\
 108 "gpgv "\
 109 "hostname "\
 110 "adduser "\
 111 "debian-archive-keyring "\
 112
 113 # Removing unneeded packages
 114 for PACKAGE in ${UNNEEDED_PACKAGES}
 115 do
 116         echo "Forcing removal of ${PACKAGE}"
 117         if ! dpkg --purge --force-remove-essential --force-depends "${PACKAGE}"
 118         then
 119                 echo "WARNING: ${PACKAGE} isn't installed"
 120         fi
 121 done
 122
 123 # Show what's left package-wise before dropping dpkg itself
 124 COLUMNS=300 dpkg-query -W --showformat='${Installed-Size;10}\t${Package}\n' | sort -k1,1n
 125
 126 # Drop dpkg
 127 dpkg --purge --force-remove-essential --force-depends  dpkg
 128
 129 # No apt or dpkg, no need for its configuration archives
 130 rm -rf etc/apt
 131 rm -rf etc/dpkg
 132
 133 # Drop directories not part of ostree
 134 # Note that /var needs to exist as ostree bind mounts the deployment /var over
 135 # it
 136 rm -rf var/* opt srv share
 137
 138 # ca-certificates are in /etc drop the source
 139 rm -rf usr/share/ca-certificates
 140
 141 # No bash, no need for completions
 142 rm -rf usr/share/bash-completion
 143
 144 # No zsh, no need for comletions
 145 rm -rf usr/share/zsh/vendor-completions
 146
 147 # drop gcc-6 python helpers
 148 rm -rf usr/share/gcc-6
 149
 150 # Drop sysvinit leftovers
 151 rm -rf etc/init.d
 152 rm -rf etc/rc[0-6S].d
 153
 154 # Drop upstart helpers
 155 rm -rf etc/init
 156
 157 # Various xtables helpers
 158 rm -rf usr/lib/xtables
 159
 160 # Drop all locales
 161 # TODO: only remaining locale is actually "C". Should we really remove it?
 162 rm -rf usr/lib/locale/*
 163
 164 # partition helpers
 165 rm usr/sbin/*fdisk
 166
 167 # local compiler
 168 rm usr/bin/localedef
 169
 170 # Systemd dns resolver
 171 find usr etc -name '*systemd-resolve*' -prune -exec rm -r {} \;
 172
 173 # Systemd network configuration
 174 find usr etc -name '*networkd*' -prune -exec rm -r {} \;
 175
 176 # systemd ntp client
 177 find usr etc -name '*timesyncd*' -prune -exec rm -r {} \;
 178
 179 # systemd hw database manager
 180 find usr etc -name '*systemd-hwdb*' -prune -exec rm -r {} \;
 181
 182 # No need for fuse
 183 find usr etc -name '*fuse*' -prune -exec rm -r {} \;
 184
 185 # lsb init function leftovers
 186 rm -rf usr/lib/lsb
 187
 188 # Only needed when adding libraries
 189 rm usr/sbin/ldconfig*
 190
 191 # Games, unused
 192 rmdir usr/games
 193
 194 # Remove pam module to authenticate against a DB
 195 # plus libdb-5.3.so that is only used by this pam module
 196 rm usr/lib/*/security/pam_userdb.so
 197 rm usr/lib/*/libdb-5.3.so
 198
 199 # remove NSS support for nis, nisplus and hesiod
 200 rm usr/lib/*/libnss_hesiod*
 201 rm usr/lib/*/libnss_nis*