.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.  Except db820c's
  35 # GPU firmware, due to using a precompiled kernel without compression support.
  36 find /lib/firmware -type f -print0 | \
  37     grep -vz a530 | \
  38     xargs -0r -P4 -n4 xz -T1 -C crc32
  39 ln -s /lib/firmware/qcom/a530* /lib/firmware/
  40
  41 # Copy timezone file and remove tzdata package
  42 rm -rf /etc/localtime
  43 cp /usr/share/zoneinfo/Etc/UTC /etc/localtime
  44
  45 UNNEEDED_PACKAGES="libfdisk1
  46                    tzdata
  47                    diffutils"
  48
  49 export DEBIAN_FRONTEND=noninteractive
  50
  51 # Removing unused packages
  52 for PACKAGE in ${UNNEEDED_PACKAGES}
  53 do
  54         echo ${PACKAGE}
  55         if ! apt-get remove --purge --yes "${PACKAGE}"
  56         then
  57                 echo "WARNING: ${PACKAGE} isn't installed"
  58         fi
  59 done
  60
  61 apt-get autoremove --yes || true
  62
  63 # Dropping logs
  64 rm -rf /var/log/*
  65
  66 # Dropping documentation, localization, i18n files, etc
  67 rm -rf /usr/share/doc/*
  68 rm -rf /usr/share/locale/*
  69 rm -rf /usr/share/man
  70 rm -rf /usr/share/i18n/*
  71 rm -rf /usr/share/info/*
  72 rm -rf /usr/share/lintian/*
  73 rm -rf /usr/share/common-licenses/*
  74 rm -rf /usr/share/mime/*
  75
  76 # Dropping reportbug scripts
  77 rm -rf /usr/share/bug
  78
  79 # Drop udev hwdb not required on a stripped system
  80 rm -rf /lib/udev/hwdb.bin /lib/udev/hwdb.d/*
  81
  82 # Drop all gconv conversions && binaries
  83 rm -rf usr/bin/iconv
  84 rm -rf usr/sbin/iconvconfig
  85 rm -rf usr/lib/*/gconv/
  86
  87 # Remove libusb database
  88 rm -rf usr/sbin/update-usbids
  89 rm -rf var/lib/usbutils/usb.ids
  90 rm -rf usr/share/misc/usb.ids
  91
  92 #######################################################################
  93 # Crush into a minimal production image to be deployed via some type of image
  94 # updating system.
  95 # IMPORTANT: The Debian system is not longer functional at this point,
  96 # for example, apt and dpkg will stop working
  97
  98 UNNEEDED_PACKAGES="apt libapt-pkg5.0 "\
  99 "ncurses-bin ncurses-base libncursesw5 libncurses5 "\
 100 "perl-base "\
 101 "debconf libdebconfclient0 "\
 102 "e2fsprogs e2fslibs libfdisk1 "\
 103 "insserv "\
 104 "udev "\
 105 "init-system-helpers "\
 106 "bash "\
 107 "cpio "\
 108 "xz-utils "\
 109 "passwd "\
 110 "libsemanage1 libsemanage-common "\
 111 "libsepol1 "\
 112 "gpgv "\
 113 "hostname "\
 114 "adduser "\
 115 "debian-archive-keyring "\
 116
 117 # Removing unneeded packages
 118 for PACKAGE in ${UNNEEDED_PACKAGES}
 119 do
 120         echo "Forcing removal of ${PACKAGE}"
 121         if ! dpkg --purge --force-remove-essential --force-depends "${PACKAGE}"
 122         then
 123                 echo "WARNING: ${PACKAGE} isn't installed"
 124         fi
 125 done
 126
 127 # Show what's left package-wise before dropping dpkg itself
 128 COLUMNS=300 dpkg-query -W --showformat='${Installed-Size;10}\t${Package}\n' | sort -k1,1n
 129
 130 # Drop dpkg
 131 dpkg --purge --force-remove-essential --force-depends  dpkg
 132
 133 # No apt or dpkg, no need for its configuration archives
 134 rm -rf etc/apt
 135 rm -rf etc/dpkg
 136
 137 # Drop directories not part of ostree
 138 # Note that /var needs to exist as ostree bind mounts the deployment /var over
 139 # it
 140 rm -rf var/* opt srv share
 141
 142 # ca-certificates are in /etc drop the source
 143 rm -rf usr/share/ca-certificates
 144
 145 # No bash, no need for completions
 146 rm -rf usr/share/bash-completion
 147
 148 # No zsh, no need for comletions
 149 rm -rf usr/share/zsh/vendor-completions
 150
 151 # drop gcc-6 python helpers
 152 rm -rf usr/share/gcc-6
 153
 154 # Drop sysvinit leftovers
 155 rm -rf etc/init.d
 156 rm -rf etc/rc[0-6S].d
 157
 158 # Drop upstart helpers
 159 rm -rf etc/init
 160
 161 # Various xtables helpers
 162 rm -rf usr/lib/xtables
 163
 164 # Drop all locales
 165 # TODO: only remaining locale is actually "C". Should we really remove it?
 166 rm -rf usr/lib/locale/*
 167
 168 # partition helpers
 169 rm usr/sbin/*fdisk
 170
 171 # local compiler
 172 rm usr/bin/localedef
 173
 174 # Systemd dns resolver
 175 find usr etc -name '*systemd-resolve*' -prune -exec rm -r {} \;
 176
 177 # Systemd network configuration
 178 find usr etc -name '*networkd*' -prune -exec rm -r {} \;
 179
 180 # systemd ntp client
 181 find usr etc -name '*timesyncd*' -prune -exec rm -r {} \;
 182
 183 # systemd hw database manager
 184 find usr etc -name '*systemd-hwdb*' -prune -exec rm -r {} \;
 185
 186 # No need for fuse
 187 find usr etc -name '*fuse*' -prune -exec rm -r {} \;
 188
 189 # lsb init function leftovers
 190 rm -rf usr/lib/lsb
 191
 192 # Only needed when adding libraries
 193 rm usr/sbin/ldconfig*
 194
 195 # Games, unused
 196 rmdir usr/games
 197
 198 # Remove pam module to authenticate against a DB
 199 # plus libdb-5.3.so that is only used by this pam module
 200 rm usr/lib/*/security/pam_userdb.so
 201 rm usr/lib/*/libdb-5.3.so
 202
 203 # remove NSS support for nis, nisplus and hesiod
 204 rm usr/lib/*/libnss_hesiod*
 205 rm usr/lib/*/libnss_nis*