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