mk-deb-chroot

   1 #!/bin/bash
   2 if [ "$EUID" -ne 0 ]
   3   then echo "Please run as root"
   4   exit
   5 fi
   6 if [ -z "$1"  ]
   7   then echo "Need arg $1 for chroot to make"
   8   exit
   9 fi
  10 chrootdir="$1"
  11
  12 if [ -e /opt/chroot/$chrootdir ]; then
  13     echo "/opt/chroot/$chrootdir already exists"
  14     exit
  15 fi
  16
  17
  18 echo "Creating chroot dir '$chrootdir'"
  19
  20 # Create coriolis chroot dir in /opt
  21 mkdir /opt/chroot/$chrootdir
  22
  23 echo "adding retries for debootstrap to not fail"
  24 echo 'APT::Acquire::Retries "10";' > /etc/apt/apt.conf.d/80-retries
  25 echo 'APT::Acquire::Retries "10";' > /opt/chroot/$chrootdir/etc/apt/apt.conf.d/80-retries
  26
  27 # Install debootstrap and schroot
  28 if [ -e /etc/debian_version ]; then
  29     # Debian detected: use apt
  30     apt install -y debootstrap schroot
  31 elif [ -e /etc/arch-release ]; then
  32     # Arch Linux detected: use pacman
  33     pacman -S --needed debootstrap schroot
  34 fi
  35
  36 # Install debian/buster chroot using debootstrap
  37 /usr/sbin/debootstrap buster /opt/chroot/$chrootdir \
  38                       http://ftp.uk.debian.org/debian
  39 echo "$chrootdir" > /opt/chroot/$chrootdir/etc/debian_chroot
  40
  41 # make chroot profile
  42 mkdir -p /etc/schroot/$chrootdir
  43 cp /etc/schroot/default/copyfiles /etc/schroot/$chrootdir
  44 touch /etc/schroot/$chrootdir/nssdatabases
  45
  46 # create special fstab not bind-mounting /home
  47 cat <<EOF >/etc/schroot/$chrootdir/fstab
  48 # <file system> <mount point>   <type>  <options>       <dump>  <pass>
  49 /proc           /proc           none    rw,bind         0       0
  50 /sys            /sys            none    rw,bind         0       0
  51 /dev            /dev            none    rw,bind         0       0
  52 /dev/pts        /dev/pts        none    rw,bind         0       0
  53 /tmp            /tmp            none    rw,bind         0       0
  54 EOF
  55
  56 if grep -x "\[$chrootdir\]" /etc/schroot/schroot.conf; then
  57     echo "Found [$chrootdir] section in /etc/schroot/schroot.conf"
  58 else
  59     # Add chroot config to schroot.conf
  60     cat <<EOF >>/etc/schroot/schroot.conf
  61 [$chrootdir]
  62 description=Debian Buster for $chrootdir
  63 directory=/opt/chroot/$chrootdir
  64 groups=sbuild-security,$SUDO_USER,users
  65 type=directory
  66 profile=$chrootdir
  67 EOF
  68
  69     echo "Adding the following $chrootdir section to /etc/schroot/schroot.conf:
  70
  71 [$chrootdir]
  72 description=Debian Buster for $chrootdir
  73 directory=/opt/chroot/$chrootdir
  74 groups=sbuild-security,$SUDO_USER,users
  75 type=directory
  76
  77 This enables you to chroot into $chrootdir as an unprivileged user by running
  78 'schroot -c $chrootdir /bin/bash'
  79 "
  80 fi
  81
  82 # Install apt dependencies in the chroot
  83 cd /tmp
  84 schroot -c $chrootdir /bin/bash << EOF
  85 echo Installing necessary apt dependencies in the chroot
  86 apt-get update -y
  87 apt-get upgrade -y
  88 apt-get install -y automake binutils-dev build-essential \
  89 ccache cmake gcc git \
  90 libtool \
  91 sysvinit-core \
  92 sysvinit-utils \
  93 sudo \
  94 python2.7 \
  95 python3 python3-pip \
  96 python3-setuptools python3-dev
  97
  98 # yeah systemd in a chroot? not very funny joke.
  99 apt-get remove -y systemd
 100
 101 # add sudo no password
 102 echo '$SUDO_USER ALL=NOPASSWD: ALL' >> /etc/sudoers.d/$chrootdir
 103
 104 # Create user with same UID in the chroot
 105 useradd -m -p `python3 -c 'import crypt; print (crypt.crypt("1234","Fx"))'` \
 106                 -s /bin/bash $SUDO_USER -k /etc/skel
 107 echo -e "
 108 Added user ${SUDO_USER} with \e[1;91mpassword: 1234\e[0m"
 109
 110 # add deb-src to sources
 111 echo deb-src http://ftp.debian.org/debian buster main > \
 112         /etc/apt/sources.list.d/bustersrc.list
 113
 114 echo -e "
 115 \e[1;91mPlease use command 'passwd ${SUDO_USER}' to change this immediately after this script is run for security purposes.\e[0m
 116 "
 117
 118 # Add convenience variable to chroot user .bash_profile
 119 echo -e 'export PATH=/usr/lib/ccache:"\044PATH"\nexport DISPLAY=:0.0\n' > /home/$SUDO_USER/.bash_profile
 120 chown $SUDO_USER /home/$SUDO_USER/.bash_profile
 121 chgrp $SUDO_USER /home/$SUDO_USER/.bash_profile
 122
 123 echo -e "Added 'export PATH=/usr/lib/ccache:\"\044PATH\"\nexport DISPLAY=:0.0' to /home/$SUDO_USER/.bash_profile to speed up rebuilds"
 124 EOF