File: 25nssdatabases

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#!/bin/sh
# Copyright © 2005-2009  Roger Leigh <rleigh@debian.org>
#
# schroot is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# schroot is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see
# <http://www.gnu.org/licenses/>.
#
#####################################################################

set -e

if [ -f "$CHROOT_SCRIPT_CONFIG" ]; then
    . "$CHROOT_SCRIPT_CONFIG"
elif [ "$2" = "ok" ]; then
    echo "script-config file '$CHROOT_SCRIPT_CONFIG' does not exist"
    exit 1
fi

if [ "$AUTH_VERBOSITY" = "verbose" ]; then
  VERBOSE="--verbose"
fi

# Copy NSS database from host to chroot
# $1: database name
# $2: destination file name
dup_nss()
{
    if [ "$AUTH_VERBOSITY" = "verbose" ]; then
	echo "Copying $1 database to $2"
    fi
    getent "$1" > "$2"
}

if [ $1 = "setup-start" ] || [ $1 = "setup-recover" ]; then

    if [ -n "$NSSDATABASES" ]; then
	if [ -f "$NSSDATABASES" ]; then
	    while read db; do
		if echo "$db" | egrep -q '^(#|$)' ; then
                    continue
		fi

                # Device and inode
		dr=$(/usr/bin/stat --format="%d %i" "/etc/$db")
                # This one can fail since it might not exist yet
		dc=$(/usr/bin/stat --format="%d %i" "${CHROOT_PATH}/etc/$db" 2>/dev/null || :)

                # If the database inside and outside the chroot is the
                # same, it's very likely that dup_nss would blank the
                # database, so skip it.
		if [ "$dr" = "$dc" ]; then
		    echo "warning: $db files '/etc/$db' and '${CHROOT_PATH}/etc/$db' are the same file; skipping" 1>&2
                    continue;
		fi

		dup_nss "$db" "${CHROOT_PATH}/etc/$db"
	    done < "$NSSDATABASES"
	else
	    echo "nssdatabases file '$NSSDATABASES' does not exist"
	    exit 1
	fi
    fi

fi