first add of cdemu (might not be useful)

5 files changed, 133 insertions, 28 deletions

diff --git a/exp/.gitignore b/exp/.gitignore
index 8267a55..04ca262 100644
--- a/exp/.gitignore
+++ b/exp/.gitignore
@@ -1,4 +1,5 @@
 *
+!cdemu
 !.gitignore
 !exp.sh
 !Makefile
diff --git a/exp/Makefile b/exp/Makefile
index 16d4b65..0352f66 100644
--- a/exp/Makefile
+++ b/exp/Makefile
@@ -1,12 +1,17 @@
 REPO_URL  := https://club1.fr/~nicolas/git/dna-backup/
 
-REPO_PATH := repo
+export MAX_VERSION ?= 3
+export LO_DEV      ?= /dev/loop0
+export COMMITS     ?= commits
+export BACKUP      ?= backup
+export DIFFS       ?= diffs
+export UDF         ?= udf
+
+export REPO_PATH   ?= repo
 GIT_PATH  := git
 GITC      := git -C $(REPO_PATH)
 
-MAX_VERSION ?= 3
-
-DATADIRS  := backup diffs
+DATADIRS  := $(BACKUP) $(DIFFS) $(UDF)
 SIZEFILES := $(DATADIRS:%=%-size)
 
 .PHONY: all exp
@@ -27,10 +32,13 @@ backup-size: versions
 		cut -f1 $$i | paste -sd+ | bc >> $@; \
 	done
 
-diffs-size: diffs
+diffs-size: diffs run
 	find $< -type f -exec du -ba {} + | cut -f1 > $@
 
-versions: results backup
+udf-size: udf run
+	du -b $< | cut -f1 > $@
+
+versions: results
 	rm -rf $@
 	mkdir -p $@
 	for i in backup/*; do \
@@ -38,16 +46,30 @@ versions: results backup
 		grep $$i $< > $@/$$v ; \
 	done
 
-results: backup
+results: backup run
 	find $< -type f -exec du -ba {} + \
 	| grep -v hashes \
 	| sort -k2 \
 	> $@
 
-$(DATADIRS): commits ../dna-backup
-	rm -rf $(DATADIRS)
-	./exp.sh $< $(REPO_PATH) $(MAX_VERSION) $(DATADIRS)
-	touch $(DATADIRS)
+run: commits ../dna-backup | $(DATADIRS)
+	rm -rf $(DATADIRS:%=%/*)
+	./exp.sh
+	touch $@
+
+backup diffs:
+	mkdir $@
+
+udf: | udffile.img
+	mkdir $@
+	sudo mount -t udf $(LO_DEV) $@
+	sudo chown $$USER:$$USER $@
+
+udffile.img:
+	dd if=/dev/zero of=$@ bs=100M count=10
+	sudo losetup $(LO_DEV) $@
+	sudo cdrwtool -d $(LO_DEV) -q
+	sudo mkfs -t udf --media-type=dvdrw $(LO_DEV)
 
 ../dna-backup: .FORCE
 	@$(MAKE) -C .. --no-print-directory dna-backup
@@ -57,7 +79,7 @@ commits: | repo git
 	| sort --unique --key=2 \
 	> $@
 
-repo git:
+repo git &:
 	git clone --separate-git-dir=$(GIT_PATH) $(REPO_URL) $(REPO_PATH)
 # remove warning about detached head state
 	$(GITC) config advice.detachedHead false
@@ -65,10 +87,15 @@ repo git:
 .PHONY: clean
 clean: mostlyclean
 	rm -rf $(REPO_PATH) $(GIT_PATH)
-	rm commits
+	rm -f commits
 
-mostlyclean:
+mostlyclean: resultsclean
+	-sudo umount -fqd udf
+	-sudo losetup -d $(LO_DEV)
 	rm -rf $(DATADIRS) versions
+	rm -f udffile.img run
+
+resultsclean:
 	rm -f results summary.csv $(SIZEFILES)
 
 .FORCE: ;
diff --git a/exp/cdemu/.gitignore b/exp/cdemu/.gitignore
new file mode 100644
index 0000000..a0991ff
--- /dev/null
+++ b/exp/cdemu/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/exp/cdemu/Makefile b/exp/cdemu/Makefile
new file mode 100644
index 0000000..273a99e
--- /dev/null
+++ b/exp/cdemu/Makefile
@@ -0,0 +1,63 @@
+PKGS := vhba-module-20210418 libmirage-3.2.5 cdemu-daemon-3.2.5
+TARS := $(PKGS:%=%.tar.xz)
+
+
+.PHONY: install
+install: install-cdemu-daemon-3.2.5 install-vhba-module
+
+.PHONY: install-cdemu-daemon-3.2.5
+install-cdemu-daemon-3.2.5: cdemu-daemon-3.2.5/install_manifest.txt
+
+.PHONY: install-libmirage-3.2.5
+install-libmirage-3.2.5: libmirage-3.2.5/install_manifest.txt
+
+.PHONY: install-vhba-module
+install-vhba-module: vhba-module-20210418/vhba.ko
+	-sudo insmod vhba-module-20210418/vhba.ko
+
+.PHONY: uninstall
+uninstall: uninstall-cdemu-daemon-3.2.5 uninstall-libmirage-3.2.5
+	-sudo rmmod vhba
+
+.PHONY: uninstall-%
+uninstall-%: %/install_manifest.txt
+	sort $< | while read line; do \
+		sudo rm -f $$line; \
+		sudo rm -d `dirname $$line` 2>&1 && echo success; \
+	done | uniq | tac | sed '/success/I,+1 d'
+	rm -f $<
+
+.PHONY: clean
+clean:
+	rm -f $(TARS)
+	rm -rf $(PKGS)
+
+cdemu-daemon-3.2.5/install_manifest.txt: | cdemu-daemon-3.2.5/Makefile cdemu-daemon-3.2.5/cdemu-daemon
+	@echo "Don't worry there is an uninstall target"
+	sudo $(MAKE) -C $(@D) install
+
+cdemu-daemon-3.2.5/cdemu-daemon: cdemu-daemon-3.2.5/Makefile
+	$(MAKE) -C $(@D)
+
+cdemu-daemon-3.2.5/Makefile: | install-libmirage-3.2.5 cdemu-daemon-3.2.5
+	cd $(@D) && cmake .
+
+libmirage-3.2.5/install_manifest.txt: libmirage-3.2.5/libmirage.so
+	@echo "Please enter your password. Don't worry there is an uninstall target"
+	sudo $(MAKE) -C $(@D) install
+
+libmirage-3.2.5/libmirage.so: libmirage-3.2.5/Makefile
+	$(MAKE) -C $(@D)
+
+libmirage-3.2.5/Makefile: | libmirage-3.2.5
+	cd $(@D) && cmake .
+
+vhba-module-20210418/vhba.ko: | vhba-module-20210418
+	cd $(@D) && $(MAKE)
+
+$(PKGS): %: %.tar.xz
+	tar -xvf $<
+
+%.tar.xz:
+	wget -q http://downloads.sourceforge.net/cdemu/$@
+
diff --git a/exp/exp.sh b/exp/exp.sh
index c031b94..2ddb33f 100755
--- a/exp/exp.sh
+++ b/exp/exp.sh
@@ -1,35 +1,46 @@
 #!/bin/bash
 
-commits="$1"
-repo="$2"
-max_count="$3"
-backup="$4"
-diffs="$5"
+# This script expects the following variables to be exported:
+# - REPO_PATH: the path of the repo the experiment is based on
+# - MAX_VERSION: the max number for versions for the experiment
+# - LO_DEV: the loopbak device used to mount the UDF dir
+# - COMMITS: the name of the file that contains the lists of versions
+# - BACKUP: the path fo the dna-backup dir
+# - DIFFS: the path of the git diff dir
+# - UDF: the path of the UDF dir
 
-mkdir -p $backup $diffs
+GITC="git -C $REPO_PATH"
 
 # "empty tree" commit
 prev="4b825dc642cb6eb9a060e54bf8d69288fbee4904"
-last=$(tail --lines=1 "$commits" | cut -f1)
+last=$(tail --lines=1 $COMMITS | cut -f1)
+
+sudo mount -t udf -o loop $LO_DEV $UDF
+sudo chown $USER:$USER $UDF
 
 i=0
-cat "$commits" | while read line
+cat $COMMITS | while read line
 do
 	hash=$(echo "$line" | cut -f1)
-	git -C "$repo" checkout "$hash"
+	$GITC checkout $hash
 
 	# create diff for this version
-	git -C "$repo" diff --minimal --binary --unified=0 "$prev" | gzip > "$diffs/$i.diff.gz"
+	$GITC diff --minimal --binary --unified=0 $prev | gzip > $DIFFS/$i.diff.gz
 
 	# create backup for this version
-	../dna-backup commit -v 2 "$repo" "$backup"
+	../dna-backup commit -v 2 $REPO_PATH $BACKUP
+
+	# write to udf
+	$GITC diff | git -C $UDF apply -
+	sudo umount $UDF
 
-	prev="$hash"
+	prev=$hash
 	let i++
-	if [[ $i == $max_count ]]
+	if [[ $i == $MAX_VERSION ]]
 	then
 		break
 	fi
 done
 
-git -C "$repo" checkout "$last"
+# cleanup
+$GITC checkout $last