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Current File : //var/lib/dpkg/info/mount.preinst

#!/bin/sh -e

# Debian mount preinst
# LaMont Jones <lamont@debian.org>

chrooted() {
  if [ "$(stat -c %d/%i /)" = "$(stat -Lc %d/%i /proc/1/root 2>/dev/null)" ]; then
      # the devicenumber/inode pair of / is the same as that of /sbin/init's
      # root, so we're *not* in a chroot and hence return false.
      return 1
  fi
  return 0
}

case "$1" in
    install)
	;;

    upgrade)
	version=$2
	DISTRO=$(lsb_release -is 2>/dev/null || echo Debian);

	if [ Debian = "$DISTRO" ]; then
	  if [ -f /proc/mounts ] && ! chrooted; then
	      NFS_IN_USE=$(sed -n '/^[^ ]* [^ ]* nfs /p' /proc/mounts)
	  else
	      NFS_IN_USE=""
	  fi
	  if [ -n "$NFS_IN_USE" ] && [ ! -x /sbin/mount.nfs ] ; then
	      cat << EOF
You have NFS mount points currently mounted, and this version of mount
requires that nfs-common be upgraded before NFS mounts will work.

Aborting install.
EOF
	      exit 1
	  fi
	fi

	;;

    abort-upgrade)
	;;

    *)
	echo "preinst called with unknown argument \`$1'" >&2
	exit 1
	;;
esac