udftune: Add initial implementation

This patch adds a new udftools command/executable, `udftune`.

It implements two useful operations: "--mark-ro" and "--mark-rw", for
setting FSD and LVID Domain flags in a compatible UDF filesystem to
indicate either read-only or read/write characteristics.

The code borrows *heavily* from `udflabel`, which contains nearly all of
the required logic to modify a UDF target in this manner by itself.

Since `udflabel` is to be used for interacting with UDF label
information only, `udftune` was created in its current form.

Author: jtru

Makefile.am

@@ -1,3 +1,3 @@
-SUBDIRS = libudffs mkudffs cdrwtool pktsetup udffsck udfinfo udflabel wrudf doc
+SUBDIRS = libudffs mkudffs cdrwtool pktsetup udffsck udfinfo udflabel udftune wrudf doc
 dist_doc_DATA = AUTHORS COPYING NEWS README
 EXTRA_DIST = autogen.sh Doxyfile

configure.ac

@@ -41,6 +41,6 @@ AC_SUBST(LTLIBOBJS)
 
 AM_CONDITIONAL(USE_READLINE, test "$readline_found" = "yes")
 
-AC_CONFIG_FILES(Makefile libudffs/Makefile mkudffs/Makefile cdrwtool/Makefile pktsetup/Makefile udffsck/Makefile udfinfo/Makefile udflabel/Makefile wrudf/Makefile doc/Makefile)
+AC_CONFIG_FILES(Makefile libudffs/Makefile mkudffs/Makefile cdrwtool/Makefile pktsetup/Makefile udffsck/Makefile udfinfo/Makefile udflabel/Makefile udftune/Makefile wrudf/Makefile doc/Makefile)
 
 AC_OUTPUT

udftune/Makefile.am

@@ -0,0 +1,4 @@
+sbin_PROGRAMS = udftune
+udftune_LDADD = $(top_builddir)/libudffs/libudffs.la
+udftune_SOURCES = main.c options.c ../udfinfo/readdisc.c options.h ../udfinfo/readdisc.h ../include/ecma_167.h ../include/osta_udf.h ../include/libudffs.h
+AM_CPPFLAGS = -I$(top_srcdir)/include