scripts/build/chroot_resolv

   1 #!/bin/sh
   2
   3 ## live-build(7) - System Build Scripts
   4 ## Copyright (C) 2006-2014 Daniel Baumann <mail@daniel-baumann.ch>
   5 ##
   6 ## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
   7 ## This is free software, and you are welcome to redistribute it
   8 ## under certain conditions; see COPYING for details.
   9
  10
  11 set -e
  12
  13 # Including common functions
  14 [ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh
  15
  16 # Setting static variables
  17 DESCRIPTION="$(Echo 'manage /etc/resolv.conf')"
  18 HELP=""
  19 USAGE="${PROGRAM} {install|remove} [--force]"
  20
  21 Arguments "${@}"
  22
  23 # Reading configuration files
  24 Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
  25 Set_defaults
  26
  27 # Requiring stage file
  28 Require_stagefile .build/config .build/bootstrap
  29
  30 case "${1}" in
  31         install)
  32                 Echo_message "Configuring file /etc/resolv.conf"
  33
  34                 # Checking stage file
  35                 Check_stagefile .build/chroot_resolv
  36
  37                 # Checking lock file
  38                 Check_lockfile .lock
  39
  40                 # Creating lock file
  41                 Create_lockfile .lock
  42
  43                 if [ -e chroot/etc/resolv.conf ]
  44                 then
  45                         # Save resolv file or symlink
  46                         mv chroot/etc/resolv.conf chroot/etc/resolv.conf.orig
  47
  48                         # Also truncate it, otherwise we'll end up with the one
  49                         # created by debootstrap in the final image.
  50                         #
  51                         # If you want to have a custom resolv.conf, please
  52                         # overwrite it with normal local_includes mechanism.
  53                         Truncate chroot/etc/resolv.conf.orig
  54                 elif [ -L chroot/etc/resolv.conf ]
  55                 then
  56                         # Move resolv.conf aside if it's a symlink (likely resolvconf)
  57                         mv chroot/etc/resolv.conf chroot/etc/resolv.conf.orig
  58                 fi
  59
  60                 if [ -f /etc/resolv.conf ]
  61                 then
  62                         # Copy resolv file
  63                         cp /etc/resolv.conf chroot/etc/resolv.conf
  64                 fi
  65
  66                 # Creating stage file
  67                 Create_stagefile .build/chroot_resolv
  68                 ;;
  69
  70         remove)
  71                 Echo_message "Deconfiguring file /etc/resolv.conf"
  72
  73                 # Checking lock file
  74                 Check_lockfile .lock
  75
  76                 # Creating lock file
  77                 Create_lockfile .lock
  78
  79                 if [ -e config/includes.chroot/etc/resolv.conf ]
  80                 then
  81                         # Copying local resolv.conf
  82                         cp -a config/includes.chroot/etc/resolv.conf chroot/etc/resolv.conf
  83                         rm -f chroot/etc/resolv.conf.orig
  84                 elif [ -e chroot/etc/resolv.conf.orig ] || [ -L chroot/etc/resolv.conf.orig ]
  85                 then
  86                         # Restoring resolv file or symlink
  87                         mv chroot/etc/resolv.conf.orig chroot/etc/resolv.conf
  88                 else
  89                         # Truncating resolv file
  90                         Truncate chroot/etc/resolv.conf
  91                 fi
  92
  93                 # Clean up resolvconf's pollution
  94                 if [ -e chroot/etc/resolvconf/resolv.conf.d ]
  95                 then
  96                         rm -f chroot/etc/resolvconf/resolv.conf.d/original
  97                         rm -f chroot/etc/resolvconf/resolv.conf.d/tail
  98                 fi
  99
 100                 # Removing stage file
 101                 rm -f .build/chroot_resolv
 102                 ;;
 103
 104         *)
 105                 Usage
 106                 ;;
 107 esac