exfatprogs: add exfat2img to dump a partition

Add exfat2img to dump metadata of an exFAT filesystem.
It dump boot sector, FAT, bitmap, all metadata which
can reach from root directory.

exfat2img -o sda1.dump /dev/sda1
exfat2img -o - /dev/sda1 | bzip2 > sda1.dump.bz

When restoring a partition from a dump image generated
from stdout, exfat2img should be used like the following:

bzip2 -dc sda1.dump.bz2 | exfat2img -o /dev/sdb1 -

Signed-off-by: Hyunchul Lee <[email protected]>

Author: hclee

Android.bp

@@ -9,6 +9,7 @@ cc_library_headers {
         "tune",
         "label",
         "dump",
+	"exfat2img",
     ],
 }
 

Makefile.am

@@ -2,15 +2,16 @@
 
 ACLOCAL_AMFLAGS = -I m4
 
-SUBDIRS = lib mkfs fsck tune label dump
+SUBDIRS = lib mkfs fsck tune label dump exfat2img
 
 # manpages
 dist_man8_MANS =		\
 	manpages/fsck.exfat.8	\
 	manpages/tune.exfat.8	\
 	manpages/mkfs.exfat.8	\
 	manpages/exfatlabel.8	\
-	manpages/dump.exfat.8
+	manpages/dump.exfat.8	\
+	manpages/exfat2img.8
 
 # other stuff
 EXTRA_DIST =			\
@@ -22,4 +23,5 @@ EXTRA_DIST =			\
 	fsck/Android.bp		\
 	label/Android.bp	\
 	dump/Android.bp		\
+	exfat2img/Android.bp	\
 	README.md

configure.ac

@@ -32,6 +32,7 @@ AC_CONFIG_FILES([
 	tune/Makefile
 	label/Makefile
 	dump/Makefile
+	exfat2img/Makefile
 ])
 
 AC_OUTPUT

exfat2img/Makefile.am

@@ -0,0 +1,6 @@
+AM_CFLAGS = -Wall -Wextra -include $(top_builddir)/config.h -I$(top_srcdir)/include -fno-common
+exfat2img_LDADD = $(top_builddir)/lib/libexfat.a
+
+sbin_PROGRAMS = exfat2img
+
+exfat2img_SOURCES = exfat2img.c