From 9b5818dbb6d7c54a4d3b12fd78d02097ea757662 Mon Sep 17 00:00:00 2001
From: Stelian Pop <stelian@popies.net>
Date: Fri, 7 Jan 2005 09:51:06 +0000
Subject: [PATCH] Added a new dump on cd/dvd script.

---
 examples/dump_on_cd_3/README    | 12 +++++
 examples/dump_on_cd_3/dump_disk | 87 +++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 examples/dump_on_cd_3/README
 create mode 100755 examples/dump_on_cd_3/dump_disk

diff --git a/examples/dump_on_cd_3/README b/examples/dump_on_cd_3/README
new file mode 100644
index 0000000..c4da2fc
--- /dev/null
+++ b/examples/dump_on_cd_3/README
@@ -0,0 +1,12 @@
+I took the dump_on_cd_2/EN/* scripts and merged the pair of scripts into one
+script, which checks it's arguments to tell whether or not it is called from
+dump and acts accordingly.
+
+The script commandline takes dump arguments except -f (output file/device), -F
+(script to run after each volume is finished) and -B (volume size) which are
+overridden in the script.
+
+Andrew Basterfield
+
+bob@cemetery.homeunix.org
+
diff --git a/examples/dump_on_cd_3/dump_disk b/examples/dump_on_cd_3/dump_disk
new file mode 100755
index 0000000..b221b7a
--- /dev/null
+++ b/examples/dump_on_cd_3/dump_disk
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+# This script dumps the specified Filesystem via dump on a CD/DVD
+# DISK_CAPACITY defines the capacity in MB per disk.
+# The script's own name $0 is passed via the -F option of dump
+# When using cdrecord/dvdrecord and at least for my DVD-Recorder (a PHILIPS
+# DVR-A03) it is necessary to define the tracksize for the next track before
+# the DVD is written. This is done via the -tsize option of cdrecord. Since
+# tsize takes its arguments in Bytes, the shell cannot compute the value
+# correctly anymore (value too high), so I use bc.
+
+# If you use growisofs which does not have the 10 second delay before burning
+# of cdrecord you may want to uncomment SLEEP="10" to ensure there is data
+# waiting on the fifo before burning starts
+
+FIFO="/tmp/dump.$$.fifo"
+#DISK_CAPACITY=10	# testing
+DISK_CAPACITY=4300
+BSIZE="$(echo "$DISK_CAPACITY*1024" | bc -l )"
+TSIZE="$(echo "$DISK_CAPACITY*1024*1024" | bc -l )"
+#RECORD_BIN="dd of=/dev/null bs=1k if="	# testing
+#RECORD_BIN="/usr/bin/dvdrecord dev=0,0,0 fs=64M speed=2 -eject -dao -pad -tsize=$TSIZE -data "
+RECORD_BIN="/usr/bin/growisofs -Z /dev/dvd="
+SLEEP="10"
+DUMP="/sbin/dump"
+
+cleanup() {
+	rm -f $FIFO
+}
+
+error_exit() {
+	retcode=$?
+	echo >&2 "Error $retcode: exiting"
+	exit $retcode
+}
+
+trap error_exit ERR
+
+write_output() {
+	# supplied info from "dump -F":
+	# $1 = filename
+	# $2 = sequence number
+	echo "Please insert disk No. $(($2+1))"
+	ANSWER=""
+	while [ "$ANSWER" != "y" ] ; do
+		echo -n "Is the disk ready? (y/n) "
+		read  </dev/tty ANSWER
+		if [ "$ANSWER" == "y" ] ; then
+			([ -n "$SLEEP" ] && sleep $SLEEP; ${RECORD_BIN}${1}) &
+			return 0
+		elif [ "$ANSWER" == "n" ] ; then
+			EXIT=""
+			echo -n "Do you really want to exit? (y/n) "
+			read </dev/tty EXIT
+			if [ "$EXIT" == "y" ] ; then
+				return 1
+			fi
+		fi
+	done
+}
+
+if [ "$#" = "0" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+	echo >&2 "Usage: $0 <dump options>"
+	echo >&2 "See 'man dump' for dump options"
+	echo >&2 "the dump options -F -f -B are not required and are overridden"
+	exit 1
+fi
+
+set -m	# We need proper job control
+
+if [ "$#" = "2" ] && [ -p "$1" ]; then
+	write_output "$@" || (kill $$ >/dev/null 2>&1; exit 1)
+	exit 0
+else
+	mkfifo $FIFO
+	trap cleanup EXIT
+	if write_output "$FIFO" "0"; then
+		if $DUMP "$@" -F "$0" -f "$FIFO" -B$BSIZE; then
+			kill % >/dev/null 2>&1	# Kill the background writing process
+		else
+			wait %			# Or wait for it to complete
+		fi
+		exit 0
+	else
+		exit 1
+	fi
+fi
-- 
2.39.2