#!/bin/sh
#
# Amanda, The Advanced Maryland Automatic Network Disk Archiver
# Copyright (c) 1991-1998 University of Maryland at College Park
# All Rights Reserved.
#
# Permission to use, copy, modify, distribute, and sell this software and its
# documentation for any purpose is hereby granted without fee, provided that
# the above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear in supporting
# documentation, and that the name of U.M. not be used in advertising or
# publicity pertaining to distribution of the software without specific,
# written prior permission.  U.M. makes no representations about the
# suitability of this software for any purpose.  It is provided "as is"
# without express or implied warranty.
#
# U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# Author: James da Silva, Systems Design and Analysis Group
#			   Computer Science Department
#			   University of Maryland at College Park
#

#
# amdump: Manage running one night's Amanda dump run.
#

prefix=/usr/local
exec_prefix=${prefix}
sbindir=${exec_prefix}/sbin
libexecdir=/usr/local/libexec/amanda

confdir=/etc/amanda

PATH=$sbindir:$libexecdir:/usr/bin:/bin:/usr/sbin:/sbin:/usr/ucb
export PATH

USE_VERSION_SUFFIXES="no"
if test "$USE_VERSION_SUFFIXES" = "yes"; then
	SUF="-2.4.2p2"
else
	SUF=
fi

if [ $# -ne 1 ]; then
        echo  Usage: amdump$SUF conf
        exit 1
fi

conf=$1
if [ ! -d $confdir/$conf ]; then
    echo "amdump$SUF: could not find directory $confdir/$conf"
    exit 1
fi

cd $confdir/$conf || exit 1

logdir=`amgetconf$SUF $conf logdir`
[ $? -ne 0 ]  && exit 1
errfile=$logdir/amdump
tapecycle=`amgetconf$SUF $conf tapecycle`
[ $? -ne 0 ]  && exit 1
dumpuser=`amgetconf$SUF $conf dumpuser`
[ $? -ne 0 ]  && exit 1

runuser=`{ whoami ; } 2>/dev/null`
if [ $? -ne 0 ]; then
	idinfo=`{ id ; } 2>/dev/null`
	if [ $? -ne 0 ]; then
		runuser=${LOGNAME:-"??unknown??"}
	else
		runuser=`echo $idinfo | sed -e 's/).*//' -e 's/^.*(//'`
	fi
fi

if [ $runuser != $dumpuser ]; then
	echo "amdump: must be run as user $dumpuser, not $runuser"
	exit 1
fi

if test -f hold; then
	echo "amdump: waiting for hold file to be removed" >&2
	while test -f hold; do
		sleep 60
	done
fi

if test -f $errfile || test -f $logdir/log; then
	echo "amdump: amdump or amflush is already running, or you must run amcleanup" >&2
	exit 1
fi

umask 077

# Plan and drive the dumps.
exec </dev/null >$errfile 2>&1
echo "amdump: start at `date`"
$libexecdir/planner$SUF $conf | $libexecdir/driver$SUF $conf
echo "amdump: end at `date`"

# Send out a report on the dumps.
exec </dev/null >/dev/null 2>&1
$sbindir/amreport$SUF $conf

# Roll the log file to its datestamped name.
$libexecdir/amlogroll$SUF $conf

# Keep a debug log through the tapecycle plus a couple of days.
maxdays=`expr $tapecycle + 2`
days=1
# First, find out the last existing errfile,
# to avoid ``infinite'' loops if tapecycle is infinite
while [ $days -lt $maxdays ] && [ -f $errfile.$days ]; do
	days=`expr $days + 1`
done
# Now, renumber the existing log files
while [ $days -ge 2 ]; do
	ndays=`expr $days - 1`
	mv $errfile.$ndays $errfile.$days
	days=$ndays
done
mv $errfile $errfile.1

# Trim the log file to those for dumps that still exist.
$libexecdir/amtrmlog$SUF $conf

# Trim the index file to those for dumps that still exist.
$libexecdir/amtrmidx$SUF $conf

exit 0
