1 files changed, 41 insertions, 14 deletions
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: ;