diff --git a/.gitignore b/.gitignore
index aee4ece..f0fbd7e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,7 @@ mpathpersist/mpathpersist
 .nfs*
 *.swp
 *.patch
+libdmmp/docs/man/*.3.gz
+libdmmp/*.so.*
+libdmmp/test/libdmmp_test
+libdmmp/test/libdmmp_speed_test
diff --git a/Makefile b/Makefile
index bd7cfc1..db5a2c4 100644
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,7 @@ BUILDDIRS = \
 	libmultipath/prioritizers \
 	libmultipath/checkers \
 	libmpathpersist \
+	libdmmp \
 	multipath \
 	multipathd \
 	mpathpersist \
diff --git a/Makefile.inc b/Makefile.inc
index b7077fc..30f4a41 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -54,6 +54,9 @@ libdir	    = $(prefix)/$(LIB)/multipath
 unitdir     = $(prefix)/$(SYSTEMDPATH)/systemd/system
 mpathpersistdir = $(TOPDIR)/libmpathpersist
 mpathcmddir = $(TOPDIR)/libmpathcmd
+libdmmpdir  = $(TOPDIR)/libdmmp
+includedir  = $(prefix)/usr/include
+pkgconfdir  = $(prefix)/usr/share/pkgconfig
 
 GZIP        = gzip -9 -c
 RM          = rm -f
diff --git a/libdmmp/DEV_NOTES b/libdmmp/DEV_NOTES
new file mode 100644
index 0000000..220a9f4
--- /dev/null
+++ b/libdmmp/DEV_NOTES
@@ -0,0 +1,41 @@
+== Planed features ==
+ * Expose all properties used by /usr/bin/multipath
+
+== Code style ==
+ * Keep things as simple as possible.
+ * Linux Kernel code style.
+ * Don't use typedef.
+ * Don't use enum.
+ * We are not smarter than API user, so don't create wrapping function like:
+
+    ```
+    dmmp_mpath_search_by_id(struct dmmp_context *ctx,
+                            struct dmmp_mpath **dmmp_mp,
+                            uint32_t dmmp_mp_count, const char *id)
+
+    dmmp_path_group_id_search(struct dmmp_mpath *dmmp_mp,
+                              const char *blk_name)
+    ```
+ * The performance is the same for query single mpath and query all mpaths,
+   so no `dmmp_mpath_of_wwid(struct dmmp_context *ctx, const char *wwid)` yet.
+
+== Naming scheme ==
+ * Public constants should be named as `DMMP_XXX_YYY`.
+ * Public functions should be named as `dmmp_<noun>_<verb>`.
+ * Private constants should be named as `_DMMP_XXX_YYY`.
+ * Private functions should be named as `_dmmp_<noun>_<verb>`.
+
+== Code Layout ==
+ * libdmmp_private.h
+    Internal functions or macros.
+ * libdmmp.c
+    Handling multipathd IPC and generate dmmp_context and
+    dmmp_mpath_array_get().
+ * libdmmp_mp.c
+    For `struct dmmp_mpath`
+ * libdmmp_pg.c
+    For `struct dmmp_path_group`
+ * libdmmp_path.c
+    For `struct dmmp_path`
+ * libdmmp_misc.c
+    Misc functions.
diff --git a/libdmmp/Makefile b/libdmmp/Makefile
new file mode 100644
index 0000000..89540aa
--- /dev/null
+++ b/libdmmp/Makefile
@@ -0,0 +1,78 @@
+# Makefile
+#
+# Copyright (C) 2015 - 2016 Red Hat, Inc.
+# Gris Ge <fge@redhat.com>
+#
+include ../Makefile.inc
+
+LIBDMMP_VERSION=0.1.0
+SONAME=$(LIBDMMP_VERSION)
+DEVLIB = libdmmp.so
+LIBS = $(DEVLIB).$(SONAME)
+LIBDEPS = -pthread
+PKGFILE = libdmmp.pc
+EXTRA_MAN_FILES = libdmmp.h.3
+HEADERS = libdmmp/libdmmp.h
+OBJS = libdmmp.o libdmmp_mp.o libdmmp_pg.o libdmmp_path.o libdmmp_misc.o
+
+CFLAGS += -fvisibility=hidden -I$(libdmmpdir) -I$(mpathcmddir) \
+	  $(shell pkg-config --cflags json-c)
+LDFLAGS += $(shell pkg-config --libs json-c) -L$(mpathcmddir) -lmpathcmd
+
+all: $(LIBS) doc
+
+$(LIBS): $(OBJS)
+	$(CC) $(LDFLAGS) $(SHARED_FLAGS) \
+	-Wl,-soname=$@ $(CFLAGS) -o $@ $(OBJS) $(LIBDEPS)
+	$(LN) $@ $(DEVLIB)
+
+install:
+	$(INSTALL_PROGRAM) -m 755 $(LIBS) $(DESTDIR)$(syslibdir)/$(LIBS)
+	$(INSTALL_PROGRAM) -m 644 -D \
+		$(HEADERS) $(DESTDIR)/$(includedir)/$(HEADERS)
+	$(LN) $(LIBS) $(DESTDIR)/$(syslibdir)/$(DEVLIB)
+	$(INSTALL_PROGRAM) -m 644 -D \
+		$(PKGFILE).in $(DESTDIR)/$(pkgconfdir)/$(PKGFILE)
+	perl -i -pe 's|__VERSION__|$(LIBDMMP_VERSION)|g' \
+		$(DESTDIR)/$(pkgconfdir)/$(PKGFILE)
+	perl -i -pe 's|__LIBDIR__|$(syslibdir)|g' \
+		$(DESTDIR)/$(pkgconfdir)/$(PKGFILE)
+	perl -i -pe 's|__INCLUDEDIR__|$(includedir)|g' \
+		$(DESTDIR)/$(pkgconfdir)/$(PKGFILE)
+	@for file in docs/man/*.3.gz; do \
+		$(INSTALL_PROGRAM) -m 644 -D \
+			$$file \
+			$(DESTDIR)/$(man3dir)/ || exit $?; \
+	done
+
+uninstall:
+	$(RM) $(DESTDIR)$(syslibdir)/$(LIBS)
+	$(RM) $(DESTDIR)$(includedir)/$(HEADERS)
+	$(RM) $(DESTDIR)/$(syslibdir)/$(DEVLIB)
+	@for file in $(DESTDIR)/$(man3dir)/dmmp_*; do \
+		$(RM) $$file; \
+	done
+	$(RM) $(DESTDIR)$(man3dir)/libdmmp.h*
+
+clean:
+	$(RM) core *.a *.o *.gz *.so *.so.*
+	$(RM) docs/man/*.3.gz
+	$(MAKE) -C test clean
+
+check: all
+	$(MAKE) -C test check
+
+speed_test: all
+	$(MAKE) -C test speed_test
+
+doc: docs/man/$(EXTRA_MAN_FILES).gz
+
+docs/man/$(EXTRA_MAN_FILES).gz: $(HEADERS)
+	@for file in $(EXTRA_MAN_FILES); do \
+		$(INSTALL_PROGRAM) -v -m 644 -D docs/$$file docs/man/$$file; \
+	done
+	perl docs/kernel-doc -man $(HEADERS) | perl docs/split-man.pl docs/man
+	@for file in docs/man/*.3; do \
+		gzip -f $$file; \
+	done
+	find docs/man -type f -name \*[0-9].gz
diff --git a/libdmmp/docs/kernel-doc b/libdmmp/docs/kernel-doc
new file mode 100644
index 0000000..2fc8fad
--- /dev/null
+++ b/libdmmp/docs/kernel-doc
@@ -0,0 +1,2971 @@
+#!/usr/bin/perl -w
+
+use strict;
+
+## Copyright (c) 1998 Michael Zucchi, All Rights Reserved        ##
+## Copyright (C) 2000, 1  Tim Waugh <twaugh@redhat.com>          ##
+## Copyright (C) 2001  Simon Huggins                             ##
+## Copyright (C) 2005-2012  Randy Dunlap                         ##
+## Copyright (C) 2012  Dan Luedtke                               ##
+## 								 ##
+## #define enhancements by Armin Kuster <akuster@mvista.com>	 ##
+## Copyright (c) 2000 MontaVista Software, Inc.			 ##
+## 								 ##
+## This software falls under the GNU General Public License.     ##
+## Please read the COPYING file for more information             ##
+
+# 18/01/2001 - 	Cleanups
+# 		Functions prototyped as foo(void) same as foo()
+# 		Stop eval'ing where we don't need to.
+# -- huggie@earth.li
+
+# 27/06/2001 -  Allowed whitespace after initial "/**" and
+#               allowed comments before function declarations.
+# -- Christian Kreibich <ck@whoop.org>
+
+# Still to do:
+# 	- add perldoc documentation
+# 	- Look more closely at some of the scarier bits :)
+
+# 26/05/2001 - 	Support for separate source and object trees.
+#		Return error code.
+# 		Keith Owens <kaos@ocs.com.au>
+
+# 23/09/2001 - Added support for typedefs, structs, enums and unions
+#              Support for Context section; can be terminated using empty line
+#              Small fixes (like spaces vs. \s in regex)
+# -- Tim Jansen <tim@tjansen.de>
+
+# 25/07/2012 - Added support for HTML5
+# -- Dan Luedtke <mail@danrl.de>
+
+sub usage {
+    my $message = <<"EOF";
+Usage: $0 [OPTION ...] FILE ...
+
+Read C language source or header FILEs, extract embedded documentation comments,
+and print formatted documentation to standard output.
+
+The documentation comments are identified by "/**" opening comment mark. See
+Documentation/kernel-doc-nano-HOWTO.txt for the documentation comment syntax.
+
+Output format selection (mutually exclusive):
+  -docbook		Output DocBook format.
+  -html			Output HTML format.
+  -html5		Output HTML5 format.
+  -list			Output symbol list format. This is for use by docproc.
+  -man			Output troff manual page format. This is the default.
+  -rst			Output reStructuredText format.
+  -text			Output plain text format.
+
+Output selection (mutually exclusive):
+  -function NAME	Only output documentation for the given function(s)
+			or DOC: section title(s). All other functions and DOC:
+			sections are ignored. May be specified multiple times.
+  -nofunction NAME	Do NOT output documentation for the given function(s);
+			only output documentation for the other functions and
+			DOC: sections. May be specified multiple times.
+
+Output selection modifiers:
+  -no-doc-sections	Do not output DOC: sections.
+
+Other parameters:
+  -v			Verbose output, more warnings and other information.
+  -h			Print this help.
+
+EOF
+    print $message;
+    exit 1;
+}
+
+#
+# format of comments.
+# In the following table, (...)? signifies optional structure.
+#                         (...)* signifies 0 or more structure elements
+# /**
+#  * function_name(:)? (- short description)?
+# (* @parameterx: (description of parameter x)?)*
+# (* a blank line)?
+#  * (Description:)? (Description of function)?
+#  * (section header: (section description)? )*
+#  (*)?*/
+#
+# So .. the trivial example would be:
+#
+# /**
+#  * my_function
+#  */
+#
+# If the Description: header tag is omitted, then there must be a blank line
+# after the last parameter specification.
+# e.g.
+# /**
+#  * my_function - does my stuff
+#  * @my_arg: its mine damnit
+#  *
+#  * Does my stuff explained.
+#  */
+#
+#  or, could also use:
+# /**
+#  * my_function - does my stuff
+#  * @my_arg: its mine damnit
+#  * Description: Does my stuff explained.
+#  */
+# etc.
+#
+# Besides functions you can also write documentation for structs, unions,
+# enums and typedefs. Instead of the function name you must write the name
+# of the declaration;  the struct/union/enum/typedef must always precede
+# the name. Nesting of declarations is not supported.
+# Use the argument mechanism to document members or constants.
+# e.g.
+# /**
+#  * struct my_struct - short description
+#  * @a: first member
+#  * @b: second member
+#  *
+#  * Longer description
+#  */
+# struct my_struct {
+#     int a;
+#     int b;
+# /* private: */
+#     int c;
+# };
+#
+# All descriptions can be multiline, except the short function description.
+#
+# For really longs structs, you can also describe arguments inside the
+# body of the struct.
+# eg.
+# /**
+#  * struct my_struct - short description
+#  * @a: first member
+#  * @b: second member
+#  *
+#  * Longer description
+#  */
+# struct my_struct {
+#     int a;
+#     int b;
+#     /**
+#      * @c: This is longer description of C
+#      *
+#      * You can use paragraphs to describe arguments
+#      * using this method.
+#      */
+#     int c;
+# };
+#
+# This should be use only for struct/enum members.
+#
+# You can also add additional sections. When documenting kernel functions you
+# should document the "Context:" of the function, e.g. whether the functions
+# can be called form interrupts. Unlike other sections you can end it with an
+# empty line.
+# A non-void function should have a "Return:" section describing the return
+# value(s).
+# Example-sections should contain the string EXAMPLE so that they are marked
+# appropriately in DocBook.
+#
+# Example:
+# /**
+#  * user_function - function that can only be called in user context
+#  * @a: some argument
+#  * Context: !in_interrupt()
+#  *
+#  * Some description
+#  * Example:
+#  *    user_function(22);
+#  */
+# ...
+#
+#
+# All descriptive text is further processed, scanning for the following special
+# patterns, which are highlighted appropriately.
+#
+# 'funcname()' - function
+# '$ENVVAR' - environmental variable
+# '&struct_name' - name of a structure (up to two words including 'struct')
+# '@parameter' - name of a parameter
+# '%CONST' - name of a constant.
+
+## init lots of data
+
+my $errors = 0;
+my $warnings = 0;
+my $anon_struct_union = 0;
+
+# match expressions used to find embedded type information
+my $type_constant = '\%([-_\w]+)';
+my $type_func = '(\w+)\(\)';
+my $type_param = '\@(\w+)';
+my $type_struct = '\&((struct\s*)*[_\w]+)';
+my $type_struct_xml = '\\&amp;((struct\s*)*[_\w]+)';
+my $type_env = '(\$\w+)';
+my $type_enum_full = '\&(enum)\s*([_\w]+)';
+my $type_struct_full = '\&(struct)\s*([_\w]+)';
+
+# Output conversion substitutions.
+#  One for each output format
+
+# these work fairly well
+my @highlights_html = (
+                       [$type_constant, "<i>\$1</i>"],
+                       [$type_func, "<b>\$1</b>"],
+                       [$type_struct_xml, "<i>\$1</i>"],
+                       [$type_env, "<b><i>\$1</i></b>"],
+                       [$type_param, "<tt><b>\$1</b></tt>"]
+                      );
+my $local_lt = "\\\\\\\\lt:";
+my $local_gt = "\\\\\\\\gt:";
+my $blankline_html = $local_lt . "p" . $local_gt;	# was "<p>"
+
+# html version 5
+my @highlights_html5 = (
+                        [$type_constant, "<span class=\"const\">\$1</span>"],
+                        [$type_func, "<span class=\"func\">\$1</span>"],
+                        [$type_struct_xml, "<span class=\"struct\">\$1</span>"],
+                        [$type_env, "<span class=\"env\">\$1</span>"],
+                        [$type_param, "<span class=\"param\">\$1</span>]"]
+		       );
+my $blankline_html5 = $local_lt . "br /" . $local_gt;
+
+# XML, docbook format
+my @highlights_xml = (
+                      ["([^=])\\\"([^\\\"<]+)\\\"", "\$1<quote>\$2</quote>"],
+                      [$type_constant, "<constant>\$1</constant>"],
+                      [$type_struct_xml, "<structname>\$1</structname>"],
+                      [$type_param, "<parameter>\$1</parameter>"],
+                      [$type_func, "<function>\$1</function>"],
+                      [$type_env, "<envar>\$1</envar>"]
+		     );
+my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n";
+
+# gnome, docbook format
+my @highlights_gnome = (
+                        [$type_constant, "<replaceable class=\"option\">\$1</replaceable>"],
+                        [$type_func, "<function>\$1</function>"],
+                        [$type_struct, "<structname>\$1</structname>"],
+                        [$type_env, "<envar>\$1</envar>"],
+                        [$type_param, "<parameter>\$1</parameter>" ]
+		       );
+my $blankline_gnome = "</para><para>\n";
+
+# these are pretty rough
+my @highlights_man = (
+                      [$type_constant, "\$1"],
+                      [$type_func, "\\\\fB\$1\\\\fP"],
+                      [$type_struct, "\\\\fI\$1\\\\fP"],
+                      [$type_param, "\\\\fI\$1\\\\fP"]
+		     );
+my $blankline_man = "";
+
+# text-mode
+my @highlights_text = (
+                       [$type_constant, "\$1"],
+                       [$type_func, "\$1"],
+                       [$type_struct, "\$1"],
+                       [$type_param, "\$1"]
+		      );
+my $blankline_text = "";
+
+# rst-mode
+my @highlights_rst = (
+                       [$type_constant, "``\$1``"],
+                       [$type_func, "\\:c\\:func\\:`\$1`"],
+                       [$type_struct_full, "\\:c\\:type\\:`\$1 \$2 <\$2>`"],
+                       [$type_enum_full, "\\:c\\:type\\:`\$1 \$2 <\$2>`"],
+                       [$type_struct, "\\:c\\:type\\:`struct \$1 <\$1>`"],
+                       [$type_param, "**\$1**"]
+		      );
+my $blankline_rst = "\n";
+
+# list mode
+my @highlights_list = (
+                       [$type_constant, "\$1"],
+                       [$type_func, "\$1"],
+                       [$type_struct, "\$1"],
+                       [$type_param, "\$1"]
+		      );
+my $blankline_list = "";
+
+# read arguments
+if ($#ARGV == -1) {
+    usage();
+}
+
+my $kernelversion;
+my $dohighlight = "";
+
+my $verbose = 0;
+my $output_mode = "man";
+my $output_preformatted = 0;
+my $no_doc_sections = 0;
+my @highlights = @highlights_man;
+my $blankline = $blankline_man;
+my $modulename = "Kernel API";
+my $function_only = 0;
+my $show_not_found = 0;
+
+my @build_time;
+if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
+    (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
+    @build_time = gmtime($seconds);
+} else {
+    @build_time = localtime;
+}
+
+my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
+		'July', 'August', 'September', 'October',
+		'November', 'December')[$build_time[4]] .
+  " " . ($build_time[5]+1900);
+
+# Essentially these are globals.
+# They probably want to be tidied up, made more localised or something.
+# CAVEAT EMPTOR!  Some of the others I localised may not want to be, which
+# could cause "use of undefined value" or other bugs.
+my ($function, %function_table, %parametertypes, $declaration_purpose);
+my ($type, $declaration_name, $return_type);
+my ($newsection, $newcontents, $prototype, $brcount, %source_map);
+
+if (defined($ENV{'KBUILD_VERBOSE'})) {
+	$verbose = "$ENV{'KBUILD_VERBOSE'}";
+}
+
+# Generated docbook code is inserted in a template at a point where
+# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
+# http://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
+# We keep track of number of generated entries and generate a dummy
+# if needs be to ensure the expanded template can be postprocessed
+# into html.
+my $section_counter = 0;
+
+my $lineprefix="";
+
+# states
+# 0 - normal code
+# 1 - looking for function name
+# 2 - scanning field start.
+# 3 - scanning prototype.
+# 4 - documentation block
+# 5 - gathering documentation outside main block
+my $state;
+my $in_doc_sect;
+
+# Split Doc State
+# 0 - Invalid (Before start or after finish)
+# 1 - Is started (the /** was found inside a struct)
+# 2 - The @parameter header was found, start accepting multi paragraph text.
+# 3 - Finished (the */ was found)
+# 4 - Error - Comment without header was found. Spit a warning as it's not
+#     proper kernel-doc and ignore the rest.
+my $split_doc_state;
+
+#declaration types: can be
+# 'function', 'struct', 'union', 'enum', 'typedef'
+my $decl_type;
+
+my $doc_special = "\@\%\$\&";
+
+my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
+my $doc_end = '\*/';
+my $doc_com = '\s*\*\s*';
+my $doc_com_body = '\s*\* ?';
+my $doc_decl = $doc_com . '(\w+)';
+my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
+my $doc_content = $doc_com_body . '(.*)';
+my $doc_block = $doc_com . 'DOC:\s*(.*)?';
+my $doc_split_start = '^\s*/\*\*\s*$';
+my $doc_split_sect = '\s*\*\s*(@[\w\s]+):(.*)';
+my $doc_split_end = '^\s*\*/\s*$';
+
+my %constants;
+my %parameterdescs;
+my @parameterlist;
+my %sections;
+my @sectionlist;
+my $sectcheck;
+my $struct_actual;
+
+my $contents = "";
+my $section_default = "Description";	# default section
+my $section_intro = "Introduction";
+my $section = $section_default;
+my $section_context = "Context";
+my $section_return = "Return";
+
+my $undescribed = "-- undescribed --";
+
+reset_state();
+
+while ($ARGV[0] =~ m/^-(.*)/) {
+    my $cmd = shift @ARGV;
+    if ($cmd eq "-html") {
+	$output_mode = "html";
+	@highlights = @highlights_html;
+	$blankline = $blankline_html;
+    } elsif ($cmd eq "-html5") {
+	$output_mode = "html5";
+	@highlights = @highlights_html5;
+	$blankline = $blankline_html5;
+    } elsif ($cmd eq "-man") {
+	$output_mode = "man";
+	@highlights = @highlights_man;
+	$blankline = $blankline_man;
+    } elsif ($cmd eq "-text") {
+	$output_mode = "text";
+	@highlights = @highlights_text;
+	$blankline = $blankline_text;
+    } elsif ($cmd eq "-rst") {
+	$output_mode = "rst";
+	@highlights = @highlights_rst;
+	$blankline = $blankline_rst;
+    } elsif ($cmd eq "-docbook") {
+	$output_mode = "xml";
+	@highlights = @highlights_xml;
+	$blankline = $blankline_xml;
+    } elsif ($cmd eq "-list") {
+	$output_mode = "list";
+	@highlights = @highlights_list;
+	$blankline = $blankline_list;
+    } elsif ($cmd eq "-gnome") {
+	$output_mode = "gnome";
+	@highlights = @highlights_gnome;
+	$blankline = $blankline_gnome;
+    } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document
+	$modulename = shift @ARGV;
+    } elsif ($cmd eq "-function") { # to only output specific functions
+	$function_only = 1;
+	$function = shift @ARGV;
+	$function_table{$function} = 1;
+    } elsif ($cmd eq "-nofunction") { # to only output specific functions
+	$function_only = 2;
+	$function = shift @ARGV;
+	$function_table{$function} = 1;
+    } elsif ($cmd eq "-v") {
+	$verbose = 1;
+    } elsif (($cmd eq "-h") || ($cmd eq "--help")) {
+	usage();
+    } elsif ($cmd eq '-no-doc-sections') {
+	    $no_doc_sections = 1;
+    } elsif ($cmd eq '-show-not-found') {
+	$show_not_found = 1;
+    }
+}
+
+# continue execution near EOF;
+
+# get kernel version from env
+sub get_kernel_version() {
+    my $version = 'unknown kernel version';
+
+    if (defined($ENV{'KERNELVERSION'})) {
+	$version = $ENV{'KERNELVERSION'};
+    }
+    return $version;
+}
+
+##
+# dumps section contents to arrays/hashes intended for that purpose.
+#
+sub dump_section {
+    my $file = shift;
+    my $name = shift;
+    my $contents = join "\n", @_;
+
+    if ($name =~ m/$type_constant/) {
+	$name = $1;
+#	print STDERR "constant section '$1' = '$contents'\n";
+	$constants{$name} = $contents;
+    } elsif ($name =~ m/$type_param/) {
+#	print STDERR "parameter def '$1' = '$contents'\n";
+	$name = $1;
+	$parameterdescs{$name} = $contents;
+	$sectcheck = $sectcheck . $name . " ";
+    } elsif ($name eq "@\.\.\.") {
+#	print STDERR "parameter def '...' = '$contents'\n";
+	$name = "...";
+	$parameterdescs{$name} = $contents;
+	$sectcheck = $sectcheck . $name . " ";
+    } else {
+#	print STDERR "other section '$name' = '$contents'\n";
+	if (defined($sections{$name}) && ($sections{$name} ne "")) {
+		print STDERR "${file}:$.: error: duplicate section name '$name'\n";
+		++$errors;
+	}
+	$sections{$name} = $contents;
+	push @sectionlist, $name;
+    }
+}
+
+##
+# dump DOC: section after checking that it should go out
+#
+sub dump_doc_section {
+    my $file = shift;
+    my $name = shift;
+    my $contents = join "\n", @_;
+
+    if ($no_doc_sections) {
+        return;
+    }
+
+    if (($function_only == 0) ||
+	( $function_only == 1 && defined($function_table{$name})) ||
+	( $function_only == 2 && !defined($function_table{$name})))
+    {
+	dump_section($file, $name, $contents);
+	output_blockhead({'sectionlist' => \@sectionlist,
+			  'sections' => \%sections,
+			  'module' => $modulename,
+			  'content-only' => ($function_only != 0), });
+    }
+}
+
+##
+# output function
+#
+# parameterdescs, a hash.
+#  function => "function name"
+#  parameterlist => @list of parameters
+#  parameterdescs => %parameter descriptions
+#  sectionlist => @list of sections
+#  sections => %section descriptions
+#
+
+sub output_highlight {
+    my $contents = join "\n",@_;
+    my $line;
+
+#   DEBUG
+#   if (!defined $contents) {
+#	use Carp;
+#	confess "output_highlight got called with no args?\n";
+#   }
+
+    if ($output_mode eq "html" || $output_mode eq "html5" ||
+	$output_mode eq "xml") {
+	$contents = local_unescape($contents);
+	# convert data read & converted thru xml_escape() into &xyz; format:
+	$contents =~ s/\\\\\\/\&/g;
+    }
+#   print STDERR "contents b4:$contents\n";
+    eval $dohighlight;
+    die $@ if $@;
+#   print STDERR "contents af:$contents\n";
+
+#   strip whitespaces when generating html5
+    if ($output_mode eq "html5") {
+	$contents =~ s/^\s+//;
+	$contents =~ s/\s+$//;
+    }
+    foreach $line (split "\n", $contents) {
+	if (! $output_preformatted) {
+	    $line =~ s/^\s*//;
+	}
+	if ($line eq ""){
+	    if (! $output_preformatted) {
+		print $lineprefix, local_unescape($blankline);
+	    }
+	} else {
+	    $line =~ s/\\\\\\/\&/g;
+	    if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
+		print "\\&$line";
+	    } else {
+		print $lineprefix, $line;
+	    }
+	}
+	print "\n";
+    }
+}
+
+# output sections in html
+sub output_section_html(%) {
+    my %args = %{$_[0]};
+    my $section;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<h3>$section</h3>\n";
+	print "<blockquote>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</blockquote>\n";
+    }
+}
+
+# output enum in html
+sub output_enum_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "<h2>enum " . $args{'enum'} . "</h2>\n";
+
+    print "<b>enum " . $args{'enum'} . "</b> {<br>\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print " <b>" . $parameter . "</b>";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",\n";
+	}
+	print "<br>";
+    }
+    print "};<br>\n";
+
+    print "<h3>Constants</h3>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<dt><b>" . $parameter . "</b>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter});
+    }
+    print "</dl>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output typedef in html
+sub output_typedef_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "<h2>typedef " . $args{'typedef'} . "</h2>\n";
+
+    print "<b>typedef " . $args{'typedef'} . "</b>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output struct in html
+sub output_struct_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+
+    print "<h2>" . $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "</h2>\n";
+    print "<b>" . $args{'type'} . " " . $args{'struct'} . "</b> {<br>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+		print "$parameter<br>\n";
+		next;
+	}
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "&nbsp; &nbsp; <i>$1</i><b>$parameter</b>) <i>($2)</i>;<br>\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "&nbsp; &nbsp; <i>$1</i> <b>$parameter</b>$2;<br>\n";
+	} else {
+	    print "&nbsp; &nbsp; <i>$type</i> <b>$parameter</b>;<br>\n";
+	}
+    }
+    print "};<br>\n";
+
+    print "<h3>Members</h3>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt><b>" . $parameter . "</b>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    print "</dl>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output function in html
+sub output_function_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print "<h2>" . $args{'function'} . " - " . $args{'purpose'} . "</h2>\n";
+    print "<i>" . $args{'functiontype'} . "</i>\n";
+    print "<b>" . $args{'function'} . "</b>\n";
+    print "(";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "<i>$1</i><b>$parameter</b>) <i>($2)</i>";
+	} else {
+	    print "<i>" . $type . "</i> <b>" . $parameter . "</b>";
+	}
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",\n";
+	}
+    }
+    print ")\n";
+
+    print "<h3>Arguments</h3>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt><b>" . $parameter . "</b>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    print "</dl>\n";
+    output_section_html(@_);
+    print "<hr>\n";
+}
+
+# output DOC: block header in html
+sub output_blockhead_html(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<h3>$section</h3>\n";
+	print "<ul>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</ul>\n";
+    }
+    print "<hr>\n";
+}
+
+# output sections in html5
+sub output_section_html5(%) {
+    my %args = %{$_[0]};
+    my $section;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<section>\n";
+	print "<h1>$section</h1>\n";
+	print "<p>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</p>\n";
+	print "</section>\n";
+    }
+}
+
+# output enum in html5
+sub output_enum_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    my $html5id;
+
+    $html5id = $args{'enum'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"enum\" id=\"enum:". $html5id . "\">";
+    print "<h1>enum " . $args{'enum'} . "</h1>\n";
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"keyword\">enum</span> ";
+    print "<span class=\"identifier\">" . $args{'enum'} . "</span> {";
+    print "</li>\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<li class=\"indent\">";
+	print "<span class=\"param\">" . $parameter . "</span>";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "</li>\n";
+    }
+    print "<li>};</li>\n";
+    print "</ol>\n";
+
+    print "<section>\n";
+    print "<h1>Constants</h1>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<dt>" . $parameter . "</dt>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter});
+	print "</dd>\n";
+    }
+    print "</dl>\n";
+    print "</section>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output typedef in html5
+sub output_typedef_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    my $html5id;
+
+    $html5id = $args{'typedef'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"typedef\" id=\"typedef:" . $html5id . "\">\n";
+    print "<h1>typedef " . $args{'typedef'} . "</h1>\n";
+
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"keyword\">typedef</span> ";
+    print "<span class=\"identifier\">" . $args{'typedef'} . "</span>";
+    print "</li>\n";
+    print "</ol>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output struct in html5
+sub output_struct_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $html5id;
+
+    $html5id = $args{'struct'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"struct\" id=\"struct:" . $html5id . "\">\n";
+    print "<hgroup>\n";
+    print "<h1>" . $args{'type'} . " " . $args{'struct'} . "</h1>";
+    print "<h2>". $args{'purpose'} . "</h2>\n";
+    print "</hgroup>\n";
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"type\">" . $args{'type'} . "</span> ";
+    print "<span class=\"identifier\">" . $args{'struct'} . "</span> {";
+    print "</li>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<li class=\"indent\">";
+	if ($parameter =~ /^#/) {
+		print "<span class=\"param\">" . $parameter ."</span>\n";
+		print "</li>\n";
+		next;
+	}
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "<span class=\"type\">$1</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	    print "<span class=\"type\">)</span> ";
+	    print "(<span class=\"args\">$2</span>);";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "<span class=\"type\">$1</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	    print "<span class=\"bits\">$2</span>;";
+	} else {
+	    print "<span class=\"type\">$type</span> ";
+	    print "<span class=\"param\">$parameter</span>;";
+	}
+	print "</li>\n";
+    }
+    print "<li>};</li>\n";
+    print "</ol>\n";
+
+    print "<section>\n";
+    print "<h1>Members</h1>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt>" . $parameter . "</dt>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+	print "</dd>\n";
+    }
+    print "</dl>\n";
+    print "</section>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output function in html5
+sub output_function_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $html5id;
+
+    $html5id = $args{'function'};
+    $html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+    print "<article class=\"function\" id=\"func:". $html5id . "\">\n";
+    print "<hgroup>\n";
+    print "<h1>" . $args{'function'} . "</h1>";
+    print "<h2>" . $args{'purpose'} . "</h2>\n";
+    print "</hgroup>\n";
+    print "<ol class=\"code\">\n";
+    print "<li>";
+    print "<span class=\"type\">" . $args{'functiontype'} . "</span> ";
+    print "<span class=\"identifier\">" . $args{'function'} . "</span> (";
+    print "</li>";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "<li class=\"indent\">";
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "<span class=\"type\">$1</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	    print "<span class=\"type\">)</span> ";
+	    print "(<span class=\"args\">$2</span>)";
+	} else {
+	    print "<span class=\"type\">$type</span> ";
+	    print "<span class=\"param\">$parameter</span>";
+	}
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "</li>\n";
+    }
+    print "<li>)</li>\n";
+    print "</ol>\n";
+
+    print "<section>\n";
+    print "<h1>Arguments</h1>\n";
+    print "<p>\n";
+    print "<dl>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "<dt>" . $parameter . "</dt>\n";
+	print "<dd>";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+	print "</dd>\n";
+    }
+    print "</dl>\n";
+    print "</section>\n";
+    output_section_html5(@_);
+    print "</article>\n";
+}
+
+# output DOC: block header in html5
+sub output_blockhead_html5(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $html5id;
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	$html5id = $section;
+	$html5id =~ s/[^a-zA-Z0-9\-]+/_/g;
+	print "<article class=\"doc\" id=\"doc:". $html5id . "\">\n";
+	print "<h1>$section</h1>\n";
+	print "<p>\n";
+	output_highlight($args{'sections'}{$section});
+	print "</p>\n";
+    }
+    print "</article>\n";
+}
+
+sub output_section_xml(%) {
+    my %args = %{$_[0]};
+    my $section;
+    # print out each section
+    $lineprefix="   ";
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<refsect1>\n";
+	print "<title>$section</title>\n";
+	if ($section =~ m/EXAMPLE/i) {
+	    print "<informalexample><programlisting>\n";
+	    $output_preformatted = 1;
+	} else {
+	    print "<para>\n";
+	}
+	output_highlight($args{'sections'}{$section});
+	$output_preformatted = 0;
+	if ($section =~ m/EXAMPLE/i) {
+	    print "</programlisting></informalexample>\n";
+	} else {
+	    print "</para>\n";
+	}
+	print "</refsect1>\n";
+    }
+}
+
+# output function in XML DocBook
+sub output_function_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $id;
+
+    $id = "API-" . $args{'function'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>" . $args{'function'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>" . $args{'function'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <funcsynopsis><funcprototype>\n";
+    print "   <funcdef>" . $args{'functiontype'} . " ";
+    print "<function>" . $args{'function'} . " </function></funcdef>\n";
+
+    $count = 0;
+    if ($#{$args{'parameterlist'}} >= 0) {
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    $type = $args{'parametertypes'}{$parameter};
+	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+		# pointer-to-function
+		print "   <paramdef>$1<parameter>$parameter</parameter>)\n";
+		print "     <funcparams>$2</funcparams></paramdef>\n";
+	    } else {
+		print "   <paramdef>" . $type;
+		print " <parameter>$parameter</parameter></paramdef>\n";
+	    }
+	}
+    } else {
+	print "  <void/>\n";
+    }
+    print "  </funcprototype></funcsynopsis>\n";
+    print "</refsynopsisdiv>\n";
+
+    # print parameters
+    print "<refsect1>\n <title>Arguments</title>\n";
+    if ($#{$args{'parameterlist'}} >= 0) {
+	print " <variablelist>\n";
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    my $parameter_name = $parameter;
+	    $parameter_name =~ s/\[.*//;
+
+	    print "  <varlistentry>\n   <term><parameter>$parameter</parameter></term>\n";
+	    print "   <listitem>\n    <para>\n";
+	    $lineprefix="     ";
+	    output_highlight($args{'parameterdescs'}{$parameter_name});
+	    print "    </para>\n   </listitem>\n  </varlistentry>\n";
+	}
+	print " </variablelist>\n";
+    } else {
+	print " <para>\n  None\n </para>\n";
+    }
+    print "</refsect1>\n";
+
+    output_section_xml(@_);
+    print "</refentry>\n\n";
+}
+
+# output struct in XML DocBook
+sub output_struct_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $id;
+
+    $id = "API-struct-" . $args{'struct'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>" . $args{'type'} . " " . $args{'struct'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>" . $args{'type'} . " " . $args{'struct'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <programlisting>\n";
+    print $args{'type'} . " " . $args{'struct'} . " {\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    my $prm = $parameter;
+	    # convert data read & converted thru xml_escape() into &xyz; format:
+	    # This allows us to have #define macros interspersed in a struct.
+	    $prm =~ s/\\\\\\/\&/g;
+	    print "$prm\n";
+	    next;
+	}
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	defined($args{'parameterdescs'}{$parameter_name}) || next;
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "  $1 $parameter) ($2);\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "  $1 $parameter$2;\n";
+	} else {
+	    print "  " . $type . " " . $parameter . ";\n";
+	}
+    }
+    print "};";
+    print "  </programlisting>\n";
+    print "</refsynopsisdiv>\n";
+
+    print " <refsect1>\n";
+    print "  <title>Members</title>\n";
+
+    if ($#{$args{'parameterlist'}} >= 0) {
+    print "  <variablelist>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+      ($parameter =~ /^#/) && next;
+
+      my $parameter_name = $parameter;
+      $parameter_name =~ s/\[.*//;
+
+      defined($args{'parameterdescs'}{$parameter_name}) || next;
+      ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+      print "    <varlistentry>";
+      print "      <term>$parameter</term>\n";
+      print "      <listitem><para>\n";
+      output_highlight($args{'parameterdescs'}{$parameter_name});
+      print "      </para></listitem>\n";
+      print "    </varlistentry>\n";
+    }
+    print "  </variablelist>\n";
+    } else {
+	print " <para>\n  None\n </para>\n";
+    }
+    print " </refsect1>\n";
+
+    output_section_xml(@_);
+
+    print "</refentry>\n\n";
+}
+
+# output enum in XML DocBook
+sub output_enum_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $id;
+
+    $id = "API-enum-" . $args{'enum'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>enum " . $args{'enum'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print " <refmiscinfo class=\"version\">" . $kernelversion . "</refmiscinfo>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>enum " . $args{'enum'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <programlisting>\n";
+    print "enum " . $args{'enum'} . " {\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "  $parameter";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "\n";
+    }
+    print "};";
+    print "  </programlisting>\n";
+    print "</refsynopsisdiv>\n";
+
+    print "<refsect1>\n";
+    print " <title>Constants</title>\n";
+    print "  <variablelist>\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+      my $parameter_name = $parameter;
+      $parameter_name =~ s/\[.*//;
+
+      print "    <varlistentry>";
+      print "      <term>$parameter</term>\n";
+      print "      <listitem><para>\n";
+      output_highlight($args{'parameterdescs'}{$parameter_name});
+      print "      </para></listitem>\n";
+      print "    </varlistentry>\n";
+    }
+    print "  </variablelist>\n";
+    print "</refsect1>\n";
+
+    output_section_xml(@_);
+
+    print "</refentry>\n\n";
+}
+
+# output typedef in XML DocBook
+sub output_typedef_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $id;
+
+    $id = "API-typedef-" . $args{'typedef'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<refentry id=\"$id\">\n";
+    print "<refentryinfo>\n";
+    print " <title>LINUX</title>\n";
+    print " <productname>Kernel Hackers Manual</productname>\n";
+    print " <date>$man_date</date>\n";
+    print "</refentryinfo>\n";
+    print "<refmeta>\n";
+    print " <refentrytitle><phrase>typedef " . $args{'typedef'} . "</phrase></refentrytitle>\n";
+    print " <manvolnum>9</manvolnum>\n";
+    print "</refmeta>\n";
+    print "<refnamediv>\n";
+    print " <refname>typedef " . $args{'typedef'} . "</refname>\n";
+    print " <refpurpose>\n";
+    print "  ";
+    output_highlight ($args{'purpose'});
+    print " </refpurpose>\n";
+    print "</refnamediv>\n";
+
+    print "<refsynopsisdiv>\n";
+    print " <title>Synopsis</title>\n";
+    print "  <synopsis>typedef " . $args{'typedef'} . ";</synopsis>\n";
+    print "</refsynopsisdiv>\n";
+
+    output_section_xml(@_);
+
+    print "</refentry>\n\n";
+}
+
+# output in XML DocBook
+sub output_blockhead_xml(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    my $id = $args{'module'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    # print out each section
+    $lineprefix="   ";
+    foreach $section (@{$args{'sectionlist'}}) {
+	if (!$args{'content-only'}) {
+		print "<refsect1>\n <title>$section</title>\n";
+	}
+	if ($section =~ m/EXAMPLE/i) {
+	    print "<example><para>\n";
+	    $output_preformatted = 1;
+	} else {
+	    print "<para>\n";
+	}
+	output_highlight($args{'sections'}{$section});
+	$output_preformatted = 0;
+	if ($section =~ m/EXAMPLE/i) {
+	    print "</para></example>\n";
+	} else {
+	    print "</para>";
+	}
+	if (!$args{'content-only'}) {
+		print "\n</refsect1>\n";
+	}
+    }
+
+    print "\n\n";
+}
+
+# output in XML DocBook
+sub output_function_gnome {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+    my $id;
+
+    $id = $args{'module'} . "-" . $args{'function'};
+    $id =~ s/[^A-Za-z0-9]/-/g;
+
+    print "<sect2>\n";
+    print " <title id=\"$id\">" . $args{'function'} . "</title>\n";
+
+    print "  <funcsynopsis>\n";
+    print "   <funcdef>" . $args{'functiontype'} . " ";
+    print "<function>" . $args{'function'} . " ";
+    print "</function></funcdef>\n";
+
+    $count = 0;
+    if ($#{$args{'parameterlist'}} >= 0) {
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    $type = $args{'parametertypes'}{$parameter};
+	    if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+		# pointer-to-function
+		print "   <paramdef>$1 <parameter>$parameter</parameter>)\n";
+		print "     <funcparams>$2</funcparams></paramdef>\n";
+	    } else {
+		print "   <paramdef>" . $type;
+		print " <parameter>$parameter</parameter></paramdef>\n";
+	    }
+	}
+    } else {
+	print "  <void>\n";
+    }
+    print "  </funcsynopsis>\n";
+    if ($#{$args{'parameterlist'}} >= 0) {
+	print " <informaltable pgwide=\"1\" frame=\"none\" role=\"params\">\n";
+	print "<tgroup cols=\"2\">\n";
+	print "<colspec colwidth=\"2*\">\n";
+	print "<colspec colwidth=\"8*\">\n";
+	print "<tbody>\n";
+	foreach $parameter (@{$args{'parameterlist'}}) {
+	    my $parameter_name = $parameter;
+	    $parameter_name =~ s/\[.*//;
+
+	    print "  <row><entry align=\"right\"><parameter>$parameter</parameter></entry>\n";
+	    print "   <entry>\n";
+	    $lineprefix="     ";
+	    output_highlight($args{'parameterdescs'}{$parameter_name});
+	    print "    </entry></row>\n";
+	}
+	print " </tbody></tgroup></informaltable>\n";
+    } else {
+	print " <para>\n  None\n </para>\n";
+    }
+
+    # print out each section
+    $lineprefix="   ";
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "<simplesect>\n <title>$section</title>\n";
+	if ($section =~ m/EXAMPLE/i) {
+	    print "<example><programlisting>\n";
+	    $output_preformatted = 1;
+	} else {
+	}
+	print "<para>\n";
+	output_highlight($args{'sections'}{$section});
+	$output_preformatted = 0;
+	print "</para>\n";
+	if ($section =~ m/EXAMPLE/i) {
+	    print "</programlisting></example>\n";
+	} else {
+	}
+	print " </simplesect>\n";
+    }
+
+    print "</sect2>\n\n";
+}
+
+##
+# output function in man
+sub output_function_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
+
+    print ".SH SYNOPSIS\n";
+    if ($args{'functiontype'} ne "") {
+	print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
+    } else {
+	print ".B \"" . $args{'function'} . "\n";
+    }
+    $count = 0;
+    my $parenth = "(";
+    my $post = ",";
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	if ($count == $#{$args{'parameterlist'}}) {
+	    $post = ");";
+	}
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print ".BI \"" . $parenth . $1 . "\" " . $parameter . " \") (" . $2 . ")" . $post . "\"\n";
+	} else {
+	    $type =~ s/([^\*])$/$1 /;
+	    print ".BI \"" . $parenth . $type . "\" " . $parameter . " \"" . $post . "\"\n";
+	}
+	$count++;
+	$parenth = "";
+    }
+
+    print ".SH ARGUMENTS\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	print ".IP \"" . $parameter . "\" 12\n";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"", uc $section, "\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output enum in man
+sub output_enum_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
+
+    print ".SH SYNOPSIS\n";
+    print "enum " . $args{'enum'} . " {\n";
+    $count = 0;
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	print ".br\n.BI \"    $parameter\"\n";
+	if ($count == $#{$args{'parameterlist'}}) {
+	    print "\n};\n";
+	    last;
+	}
+	else {
+	    print ", \n.br\n";
+	}
+	$count++;
+    }
+
+    print ".SH Constants\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	print ".IP \"" . $parameter . "\" 12\n";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output struct in man
+sub output_struct_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
+
+    print ".SH SYNOPSIS\n";
+    print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
+
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    print ".BI \"$parameter\"\n.br\n";
+	    next;
+	}
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print ".BI \"    " . $1 . "\" " . $parameter . " \") (" . $2 . ")" . "\"\n;\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print ".BI \"    " . $1 . "\ \" " . $parameter . $2 . " \"" . "\"\n;\n";
+	} else {
+	    $type =~ s/([^\*])$/$1 /;
+	    print ".BI \"    " . $type . "\" " . $parameter . " \"" . "\"\n;\n";
+	}
+	print "\n.br\n";
+    }
+    print "};\n.br\n";
+
+    print ".SH Members\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print ".IP \"" . $parameter . "\" 12\n";
+	output_highlight($args{'parameterdescs'}{$parameter_name});
+    }
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output typedef in man
+sub output_typedef_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    print ".SH NAME\n";
+    print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+sub output_blockhead_man(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $count;
+
+    print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ".SH \"$section\"\n";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output in text
+sub output_function_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $start;
+
+    print "Name:\n\n";
+    print $args{'function'} . " - " . $args{'purpose'} . "\n";
+
+    print "\nSynopsis:\n\n";
+    if ($args{'functiontype'} ne "") {
+	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
+    } else {
+	$start = $args{'function'} . " (";
+    }
+    print $start;
+
+    my $count = 0;
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print $1 . $parameter . ") (" . $2;
+	} else {
+	    print $type . " " . $parameter;
+	}
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",\n";
+	    print " " x length($start);
+	} else {
+	    print ");\n\n";
+	}
+    }
+
+    print "Arguments:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	print $parameter . "\n\t" . $args{'parameterdescs'}{$parameter_name} . "\n";
+    }
+    output_section_text(@_);
+}
+
+#output sections in text
+sub output_section_text(%) {
+    my %args = %{$_[0]};
+    my $section;
+
+    print "\n";
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "$section:\n\n";
+	output_highlight($args{'sections'}{$section});
+    }
+    print "\n\n";
+}
+
+# output enum in text
+sub output_enum_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "Enum:\n\n";
+
+    print "enum " . $args{'enum'} . " - " . $args{'purpose'} . "\n\n";
+    print "enum " . $args{'enum'} . " {\n";
+    $count = 0;
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "\t$parameter";
+	if ($count != $#{$args{'parameterlist'}}) {
+	    $count++;
+	    print ",";
+	}
+	print "\n";
+    }
+    print "};\n\n";
+
+    print "Constants:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "$parameter\n\t";
+	print $args{'parameterdescs'}{$parameter} . "\n";
+    }
+
+    output_section_text(@_);
+}
+
+# output typedef in text
+sub output_typedef_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    print "Typedef:\n\n";
+
+    print "typedef " . $args{'typedef'} . " - " . $args{'purpose'} . "\n";
+    output_section_text(@_);
+}
+
+# output struct as text
+sub output_struct_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+
+    print $args{'type'} . " " . $args{'struct'} . " - " . $args{'purpose'} . "\n\n";
+    print $args{'type'} . " " . $args{'struct'} . " {\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    print "$parameter\n";
+	    next;
+	}
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "\t$1 $parameter) ($2);\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "\t$1 $parameter$2;\n";
+	} else {
+	    print "\t" . $type . " " . $parameter . ";\n";
+	}
+    }
+    print "};\n\n";
+
+    print "Members:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	print "$parameter\n\t";
+	print $args{'parameterdescs'}{$parameter_name} . "\n";
+    }
+    print "\n";
+    output_section_text(@_);
+}
+
+sub output_blockhead_text(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print " $section:\n";
+	print "    -> ";
+	output_highlight($args{'sections'}{$section});
+    }
+}
+
+##
+# output in restructured text
+#
+
+#
+# This could use some work; it's used to output the DOC: sections, and
+# starts by putting out the name of the doc section itself, but that tends
+# to duplicate a header already in the template file.
+#
+sub output_blockhead_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "**$section**\n\n";
+	output_highlight_rst($args{'sections'}{$section});
+	print "\n";
+    }
+}
+
+sub output_highlight_rst {
+    my $contents = join "\n",@_;
+    my $line;
+
+    # undo the evil effects of xml_escape() earlier
+    $contents = xml_unescape($contents);
+
+    eval $dohighlight;
+    die $@ if $@;
+
+    foreach $line (split "\n", $contents) {
+	if ($line eq "") {
+	    print $lineprefix, $blankline;
+	} else {
+	    $line =~ s/\\\\\\/\&/g;
+	    print $lineprefix, $line;
+	}
+	print "\n";
+    }
+}
+
+sub output_function_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+    my $start;
+
+    print ".. c:function:: ";
+    if ($args{'functiontype'} ne "") {
+	$start = $args{'functiontype'} . " " . $args{'function'} . " (";
+    } else {
+	$start = $args{'function'} . " (";
+    }
+    print $start;
+
+    my $count = 0;
+    foreach my $parameter (@{$args{'parameterlist'}}) {
+	if ($count ne 0) {
+	    print ", ";
+	}
+	$count++;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print $1 . $parameter . ") (" . $2;
+	} else {
+	    print $type . " " . $parameter;
+	}
+    }
+    print ")\n\n    " . $args{'purpose'} . "\n\n";
+
+    print ":Parameters:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	my $parameter_name = $parameter;
+	#$parameter_name =~ s/\[.*//;
+	$type = $args{'parametertypes'}{$parameter};
+
+	if ($type ne "") {
+	    print "      ``$type $parameter``\n";
+	} else {
+	    print "      ``$parameter``\n";
+	}
+	if ($args{'parameterdescs'}{$parameter_name} ne $undescribed) {
+	    my $oldprefix = $lineprefix;
+	    $lineprefix = "        ";
+	    output_highlight_rst($args{'parameterdescs'}{$parameter_name});
+	    $lineprefix = $oldprefix;
+	} else {
+	    print "\n        _undescribed_\n";
+	}
+	print "\n";
+    }
+    output_section_rst(@_);
+}
+
+sub output_section_rst(%) {
+    my %args = %{$_[0]};
+    my $section;
+    my $oldprefix = $lineprefix;
+    $lineprefix = "        ";
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print ":$section:\n\n";
+	output_highlight_rst($args{'sections'}{$section});
+	print "\n";
+    }
+    print "\n";
+    $lineprefix = $oldprefix;
+}
+
+sub output_enum_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    my $name = "enum " . $args{'enum'};
+
+    print "\n\n.. c:type:: " . $name . "\n\n";
+    print "    " . $args{'purpose'} . "\n\n";
+
+    print "..\n\n:Constants:\n\n";
+    my $oldprefix = $lineprefix;
+    $lineprefix = "    ";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	print "  `$parameter`\n";
+	if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
+	    output_highlight_rst($args{'parameterdescs'}{$parameter});
+	} else {
+	    print "    undescribed\n";
+	}
+	print "\n";
+    }
+    $lineprefix = $oldprefix;
+    output_section_rst(@_);
+}
+
+sub output_typedef_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $count;
+    my $name = "typedef " . $args{'typedef'};
+
+    ### FIXME: should the name below contain "typedef" or not?
+    print "\n\n.. c:type:: " . $name . "\n\n";
+    print "    " . $args{'purpose'} . "\n\n";
+
+    output_section_rst(@_);
+}
+
+sub output_struct_rst(%) {
+    my %args = %{$_[0]};
+    my ($parameter);
+    my $name = $args{'type'} . " " . $args{'struct'};
+
+    print "\n\n.. c:type:: " . $name . "\n\n";
+    print "    " . $args{'purpose'} . "\n\n";
+
+    print ":Definition:\n\n";
+    print " ::\n\n";
+    print "  " . $args{'type'} . " " . $args{'struct'} . " {\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	if ($parameter =~ /^#/) {
+	    print "    " . "$parameter\n";
+	    next;
+	}
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
+	    # pointer-to-function
+	    print "    $1 $parameter) ($2);\n";
+	} elsif ($type =~ m/^(.*?)\s*(:.*)/) {
+	    # bitfield
+	    print "    $1 $parameter$2;\n";
+	} else {
+	    print "    " . $type . " " . $parameter . ";\n";
+	}
+    }
+    print "  };\n\n";
+
+    print ":Members:\n\n";
+    foreach $parameter (@{$args{'parameterlist'}}) {
+	($parameter =~ /^#/) && next;
+
+	my $parameter_name = $parameter;
+	$parameter_name =~ s/\[.*//;
+
+	($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+	$type = $args{'parametertypes'}{$parameter};
+	print "      `$type $parameter`" . "\n";
+	my $oldprefix = $lineprefix;
+	$lineprefix = "        ";
+	output_highlight_rst($args{'parameterdescs'}{$parameter_name});
+	$lineprefix = $oldprefix;
+	print "\n";
+    }
+    print "\n";
+    output_section_rst(@_);
+}
+
+
+## list mode output functions
+
+sub output_function_list(%) {
+    my %args = %{$_[0]};
+
+    print $args{'function'} . "\n";
+}
+
+# output enum in list
+sub output_enum_list(%) {
+    my %args = %{$_[0]};
+    print $args{'enum'} . "\n";
+}
+
+# output typedef in list
+sub output_typedef_list(%) {
+    my %args = %{$_[0]};
+    print $args{'typedef'} . "\n";
+}
+
+# output struct as list
+sub output_struct_list(%) {
+    my %args = %{$_[0]};
+
+    print $args{'struct'} . "\n";
+}
+
+sub output_blockhead_list(%) {
+    my %args = %{$_[0]};
+    my ($parameter, $section);
+
+    foreach $section (@{$args{'sectionlist'}}) {
+	print "DOC: $section\n";
+    }
+}
+
+##
+# generic output function for all types (function, struct/union, typedef, enum);
+# calls the generated, variable output_ function name based on
+# functype and output_mode
+sub output_declaration {
+    no strict 'refs';
+    my $name = shift;
+    my $functype = shift;
+    my $func = "output_${functype}_$output_mode";
+    if (($function_only==0) ||
+	( $function_only == 1 && defined($function_table{$name})) ||
+	( $function_only == 2 && !($functype eq "function" && defined($function_table{$name}))))
+    {
+	&$func(@_);
+	$section_counter++;
+    }
+}
+
+##
+# generic output function - calls the right one based on current output mode.
+sub output_blockhead {
+    no strict 'refs';
+    my $func = "output_blockhead_" . $output_mode;
+    &$func(@_);
+    $section_counter++;
+}
+
+##
+# takes a declaration (struct, union, enum, typedef) and
+# invokes the right handler. NOT called for functions.
+sub dump_declaration($$) {
+    no strict 'refs';
+    my ($prototype, $file) = @_;
+    my $func = "dump_" . $decl_type;
+    &$func(@_);
+}
+
+sub dump_union($$) {
+    dump_struct(@_);
+}
+
+sub dump_struct($$) {
+    my $x = shift;
+    my $file = shift;
+    my $nested;
+
+    if ($x =~ /(struct|union)\s+(\w+)\s*{(.*)}/) {
+	#my $decl_type = $1;
+	$declaration_name = $2;
+	my $members = $3;
+
+	# ignore embedded structs or unions
+	$members =~ s/({.*})//g;
+	$nested = $1;
+
+	# ignore members marked private:
+	$members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
+	$members =~ s/\/\*\s*private:.*//gosi;
+	# strip comments:
+	$members =~ s/\/\*.*?\*\///gos;
+	$nested =~ s/\/\*.*?\*\///gos;
+	# strip kmemcheck_bitfield_{begin,end}.*;
+	$members =~ s/kmemcheck_bitfield_.*?;//gos;
+	# strip attributes
+	$members =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
+	$members =~ s/__aligned\s*\([^;]*\)//gos;
+	$members =~ s/\s*CRYPTO_MINALIGN_ATTR//gos;
+	# replace DECLARE_BITMAP
+	$members =~ s/DECLARE_BITMAP\s*\(([^,)]+), ([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
+
+	create_parameterlist($members, ';', $file);
+	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);
+
+	output_declaration($declaration_name,
+			   'struct',
+			   {'struct' => $declaration_name,
+			    'module' => $modulename,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose,
+			    'type' => $decl_type
+			   });
+    }
+    else {
+	print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
+	++$errors;
+    }
+}
+
+sub dump_enum($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
+    # strip #define macros inside enums
+    $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
+
+    if ($x =~ /enum\s+(\w+)\s*{(.*)}/) {
+	$declaration_name = $1;
+	my $members = $2;
+
+	foreach my $arg (split ',', $members) {
+	    $arg =~ s/^\s*(\w+).*/$1/;
+	    push @parameterlist, $arg;
+	    if (!$parameterdescs{$arg}) {
+		$parameterdescs{$arg} = $undescribed;
+		print STDERR "${file}:$.: warning: Enum value '$arg' ".
+		    "not described in enum '$declaration_name'\n";
+	    }
+
+	}
+
+	output_declaration($declaration_name,
+			   'enum',
+			   {'enum' => $declaration_name,
+			    'module' => $modulename,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
+    else {
+	print STDERR "${file}:$.: error: Cannot parse enum!\n";
+	++$errors;
+    }
+}
+
+sub dump_typedef($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@/\*.*?\*/@@gos;	# strip comments.
+
+    # Parse function prototypes
+    if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/) {
+	# Function typedefs
+	$return_type = $1;
+	$declaration_name = $2;
+	my $args = $3;
+
+	create_parameterlist($args, ',', $file);
+
+	output_declaration($declaration_name,
+			   'function',
+			   {'function' => $declaration_name,
+			    'module' => $modulename,
+			    'functiontype' => $return_type,
+			    'parameterlist' => \@parameterlist,
+			    'parameterdescs' => \%parameterdescs,
+			    'parametertypes' => \%parametertypes,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+	return;
+    }
+
+    while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
+	$x =~ s/\(*.\)\s*;$/;/;
+	$x =~ s/\[*.\]\s*;$/;/;
+    }
+
+    if ($x =~ /typedef.*\s+(\w+)\s*;/) {
+	$declaration_name = $1;
+
+	output_declaration($declaration_name,
+			   'typedef',
+			   {'typedef' => $declaration_name,
+			    'module' => $modulename,
+			    'sectionlist' => \@sectionlist,
+			    'sections' => \%sections,
+			    'purpose' => $declaration_purpose
+			   });
+    }
+    else {
+	print STDERR "${file}:$.: error: Cannot parse typedef!\n";
+	++$errors;
+    }
+}
+
+sub save_struct_actual($) {
+    my $actual = shift;
+
+    # strip all spaces from the actual param so that it looks like one string item
+    $actual =~ s/\s*//g;
+    $struct_actual = $struct_actual . $actual . " ";
+}
+
+sub create_parameterlist($$$) {
+    my $args = shift;
+    my $splitter = shift;
+    my $file = shift;
+    my $type;
+    my $param;
+
+    # temporarily replace commas inside function pointer definition
+    while ($args =~ /(\([^\),]+),/) {
+	$args =~ s/(\([^\),]+),/$1#/g;
+    }
+
+    foreach my $arg (split($splitter, $args)) {
+	# strip comments
+	$arg =~ s/\/\*.*\*\///;
+	# strip leading/trailing spaces
+	$arg =~ s/^\s*//;
+	$arg =~ s/\s*$//;
+	$arg =~ s/\s+/ /;
+
+	if ($arg =~ /^#/) {
+	    # Treat preprocessor directive as a typeless variable just to fill
+	    # corresponding data structures "correctly". Catch it later in
+	    # output_* subs.
+	    push_parameter($arg, "", $file);
+	} elsif ($arg =~ m/\(.+\)\s*\(/) {
+	    # pointer-to-function
+	    $arg =~ tr/#/,/;
+	    $arg =~ m/[^\(]+\(\*?\s*(\w*)\s*\)/;
+	    $param = $1;
+	    $type = $arg;
+	    $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
+	    save_struct_actual($param);
+	    push_parameter($param, $type, $file);
+	} elsif ($arg) {
+	    $arg =~ s/\s*:\s*/:/g;
+	    $arg =~ s/\s*\[/\[/g;
+
+	    my @args = split('\s*,\s*', $arg);
+	    if ($args[0] =~ m/\*/) {
+		$args[0] =~ s/(\*+)\s*/ $1/;
+	    }
+
+	    my @first_arg;
+	    if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
+		    shift @args;
+		    push(@first_arg, split('\s+', $1));
+		    push(@first_arg, $2);
+	    } else {
+		    @first_arg = split('\s+', shift @args);
+	    }
+
+	    unshift(@args, pop @first_arg);
+	    $type = join " ", @first_arg;
+
+	    foreach $param (@args) {
+		if ($param =~ m/^(\*+)\s*(.*)/) {
+		    save_struct_actual($2);
+		    push_parameter($2, "$type $1", $file);
+		}
+		elsif ($param =~ m/(.*?):(\d+)/) {
+		    if ($type ne "") { # skip unnamed bit-fields
+			save_struct_actual($1);
+			push_parameter($1, "$type:$2", $file)
+		    }
+		}
+		else {
+		    save_struct_actual($param);
+		    push_parameter($param, $type, $file);
+		}
+	    }
+	}
+    }
+}
+
+sub push_parameter($$$) {
+	my $param = shift;
+	my $type = shift;
+	my $file = shift;
+
+	if (($anon_struct_union == 1) && ($type eq "") &&
+	    ($param eq "}")) {
+		return;		# ignore the ending }; from anon. struct/union
+	}
+
+	$anon_struct_union = 0;
+	my $param_name = $param;
+	$param_name =~ s/\[.*//;
+
+	if ($type eq "" && $param =~ /\.\.\.$/)
+	{
+	    if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
+		$parameterdescs{$param} = "variable arguments";
+	    }
+	}
+	elsif ($type eq "" && ($param eq "" or $param eq "void"))
+	{
+	    $param="void";
+	    $parameterdescs{void} = "no arguments";
+	}
+	elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
+	# handle unnamed (anonymous) union or struct:
+	{
+		$type = $param;
+		$param = "{unnamed_" . $param . "}";
+		$parameterdescs{$param} = "anonymous\n";
+		$anon_struct_union = 1;
+	}
+
+	# warn if parameter has no description
+	# (but ignore ones starting with # as these are not parameters
+	# but inline preprocessor statements);
+	# also ignore unnamed structs/unions;
+	if (!$anon_struct_union) {
+	if (!defined $parameterdescs{$param_name} && $param_name !~ /^#/) {
+
+	    $parameterdescs{$param_name} = $undescribed;
+
+	    if (($type eq 'function') || ($type eq 'enum')) {
+		print STDERR "${file}:$.: warning: Function parameter ".
+		    "or member '$param' not " .
+		    "described in '$declaration_name'\n";
+	    }
+	    print STDERR "${file}:$.: warning:" .
+			 " No description found for parameter '$param'\n";
+	    ++$warnings;
+	}
+	}
+
+	$param = xml_escape($param);
+
+	# strip spaces from $param so that it is one continuous string
+	# on @parameterlist;
+	# this fixes a problem where check_sections() cannot find
+	# a parameter like "addr[6 + 2]" because it actually appears
+	# as "addr[6", "+", "2]" on the parameter list;
+	# but it's better to maintain the param string unchanged for output,
+	# so just weaken the string compare in check_sections() to ignore
+	# "[blah" in a parameter string;
+	###$param =~ s/\s*//g;
+	push @parameterlist, $param;
+	$parametertypes{$param} = $type;
+}
+
+sub check_sections($$$$$$) {
+	my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck, $nested) = @_;
+	my @sects = split ' ', $sectcheck;
+	my @prms = split ' ', $prmscheck;
+	my $err;
+	my ($px, $sx);
+	my $prm_clean;		# strip trailing "[array size]" and/or beginning "*"
+
+	foreach $sx (0 .. $#sects) {
+		$err = 1;
+		foreach $px (0 .. $#prms) {
+			$prm_clean = $prms[$px];
+			$prm_clean =~ s/\[.*\]//;
+			$prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
+			# ignore array size in a parameter string;
+			# however, the original param string may contain
+			# spaces, e.g.:  addr[6 + 2]
+			# and this appears in @prms as "addr[6" since the
+			# parameter list is split at spaces;
+			# hence just ignore "[..." for the sections check;
+			$prm_clean =~ s/\[.*//;
+
+			##$prm_clean =~ s/^\**//;
+			if ($prm_clean eq $sects[$sx]) {
+				$err = 0;
+				last;
+			}
+		}
+		if ($err) {
+			if ($decl_type eq "function") {
+				print STDERR "${file}:$.: warning: " .
+					"Excess function parameter " .
+					"'$sects[$sx]' " .
+					"description in '$decl_name'\n";
+				++$warnings;
+			} else {
+				if ($nested !~ m/\Q$sects[$sx]\E/) {
+				    print STDERR "${file}:$.: warning: " .
+					"Excess struct/union/enum/typedef member " .
+					"'$sects[$sx]' " .
+					"description in '$decl_name'\n";
+				    ++$warnings;
+				}
+			}
+		}
+	}
+}
+
+##
+# Checks the section describing the return value of a function.
+sub check_return_section {
+        my $file = shift;
+        my $declaration_name = shift;
+        my $return_type = shift;
+
+        # Ignore an empty return type (It's a macro)
+        # Ignore functions with a "void" return type. (But don't ignore "void *")
+        if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
+                return;
+        }
+
+        if (!defined($sections{$section_return}) ||
+            $sections{$section_return} eq "") {
+                print STDERR "${file}:$.: warning: " .
+                        "No description found for return value of " .
+                        "'$declaration_name'\n";
+                ++$warnings;
+        }
+}
+
+##
+# takes a function prototype and the name of the current file being
+# processed and spits out all the details stored in the global
+# arrays/hashes.
+sub dump_function($$) {
+    my $prototype = shift;
+    my $file = shift;
+    my $noret = 0;
+
+    $prototype =~ s/^static +//;
+    $prototype =~ s/^extern +//;
+    $prototype =~ s/^asmlinkage +//;
+    $prototype =~ s/^inline +//;
+    $prototype =~ s/^__inline__ +//;
+    $prototype =~ s/^__inline +//;
+    $prototype =~ s/^__always_inline +//;
+    $prototype =~ s/^noinline +//;
+    $prototype =~ s/__init +//;
+    $prototype =~ s/__init_or_module +//;
+    $prototype =~ s/__meminit +//;
+    $prototype =~ s/__must_check +//;
+    $prototype =~ s/__weak +//;
+    my $define = $prototype =~ s/^#\s*define\s+//; #ak added
+    $prototype =~ s/__attribute__\s*\(\([a-z,]*\)\)//;
+
+    # Yes, this truly is vile.  We are looking for:
+    # 1. Return type (may be nothing if we're looking at a macro)
+    # 2. Function name
+    # 3. Function parameters.
+    #
+    # All the while we have to watch out for function pointer parameters
+    # (which IIRC is what the two sections are for), C types (these
+    # regexps don't even start to express all the possibilities), and
+    # so on.
+    #
+    # If you mess with these regexps, it's a good idea to check that
+    # the following functions' documentation still comes out right:
+    # - parport_register_device (function pointer parameters)
+    # - atomic_set (macro)
+    # - pci_match_device, __copy_to_user (long return type)
+
+    if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
+        # This is an object-like macro, it has no return type and no parameter
+        # list.
+        # Function-like macros are not allowed to have spaces between
+        # declaration_name and opening parenthesis (notice the \s+).
+        $return_type = $1;
+        $declaration_name = $2;
+        $noret = 1;
+    } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
+	$prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
+	$prototype =~ m/^(\w+\s+\w+\s*\*\s*\w+\s*\*\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/)  {
+	$return_type = $1;
+	$declaration_name = $2;
+	my $args = $3;
+
+	create_parameterlist($args, ',', $file);
+    } else {
+	print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
+	return;
+    }
+
+	my $prms = join " ", @parameterlist;
+	check_sections($file, $declaration_name, "function", $sectcheck, $prms, "");
+
+        # This check emits a lot of warnings at the moment, because many
+        # functions don't have a 'Return' doc section. So until the number
+        # of warnings goes sufficiently down, the check is only performed in
+        # verbose mode.
+        # TODO: always perform the check.
+        if ($verbose && !$noret) {
+                check_return_section($file, $declaration_name, $return_type);
+        }
+
+    output_declaration($declaration_name,
+		       'function',
+		       {'function' => $declaration_name,
+			'module' => $modulename,
+			'functiontype' => $return_type,
+			'parameterlist' => \@parameterlist,
+			'parameterdescs' => \%parameterdescs,
+			'parametertypes' => \%parametertypes,
+			'sectionlist' => \@sectionlist,
+			'sections' => \%sections,
+			'purpose' => $declaration_purpose
+		       });
+}
+
+sub reset_state {
+    $function = "";
+    %constants = ();
+    %parameterdescs = ();
+    %parametertypes = ();
+    @parameterlist = ();
+    %sections = ();
+    @sectionlist = ();
+    $sectcheck = "";
+    $struct_actual = "";
+    $prototype = "";
+
+    $state = 0;
+    $split_doc_state = 0;
+}
+
+sub tracepoint_munge($) {
+	my $file = shift;
+	my $tracepointname = 0;
+	my $tracepointargs = 0;
+
+	if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
+		$tracepointname = $1;
+	}
+	if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
+		$tracepointname = $1;
+	}
+	if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
+		$tracepointname = $2;
+	}
+	$tracepointname =~ s/^\s+//; #strip leading whitespace
+	if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
+		$tracepointargs = $1;
+	}
+	if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
+		print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
+			     "$prototype\n";
+	} else {
+		$prototype = "static inline void trace_$tracepointname($tracepointargs)";
+	}
+}
+
+sub syscall_munge() {
+	my $void = 0;
+
+	$prototype =~ s@[\r\n\t]+@ @gos; # strip newlines/CR's/tabs
+##	if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
+	if ($prototype =~ m/SYSCALL_DEFINE0/) {
+		$void = 1;
+##		$prototype = "long sys_$1(void)";
+	}
+
+	$prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
+	if ($prototype =~ m/long (sys_.*?),/) {
+		$prototype =~ s/,/\(/;
+	} elsif ($void) {
+		$prototype =~ s/\)/\(void\)/;
+	}
+
+	# now delete all of the odd-number commas in $prototype
+	# so that arg types & arg names don't have a comma between them
+	my $count = 0;
+	my $len = length($prototype);
+	if ($void) {
+		$len = 0;	# skip the for-loop
+	}
+	for (my $ix = 0; $ix < $len; $ix++) {
+		if (substr($prototype, $ix, 1) eq ',') {
+			$count++;
+			if ($count % 2 == 1) {
+				substr($prototype, $ix, 1) = ' ';
+			}
+		}
+	}
+}
+
+sub process_state3_function($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+    if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
+	# do nothing
+    }
+    elsif ($x =~ /([^\{]*)/) {
+	$prototype .= $1;
+    }
+
+    if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
+	$prototype =~ s@/\*.*?\*/@@gos;	# strip comments.
+	$prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+	$prototype =~ s@^\s+@@gos; # strip leading spaces
+	if ($prototype =~ /SYSCALL_DEFINE/) {
+		syscall_munge();
+	}
+	if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
+	    $prototype =~ /DEFINE_SINGLE_EVENT/)
+	{
+		tracepoint_munge($file);
+	}
+	dump_function($prototype, $file);
+	reset_state();
+    }
+}
+
+sub process_state3_type($$) {
+    my $x = shift;
+    my $file = shift;
+
+    $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+    $x =~ s@^\s+@@gos; # strip leading spaces
+    $x =~ s@\s+$@@gos; # strip trailing spaces
+    $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+    if ($x =~ /^#/) {
+	# To distinguish preprocessor directive from regular declaration later.
+	$x .= ";";
+    }
+
+    while (1) {
+	if ( $x =~ /([^{};]*)([{};])(.*)/ ) {
+	    $prototype .= $1 . $2;
+	    ($2 eq '{') && $brcount++;
+	    ($2 eq '}') && $brcount--;
+	    if (($2 eq ';') && ($brcount == 0)) {
+		dump_declaration($prototype, $file);
+		reset_state();
+		last;
+	    }
+	    $x = $3;
+	} else {
+	    $prototype .= $x;
+	    last;
+	}
+    }
+}
+
+# xml_escape: replace <, >, and & in the text stream;
+#
+# however, formatting controls that are generated internally/locally in the
+# kernel-doc script are not escaped here; instead, they begin life like
+# $blankline_html (4 of '\' followed by a mnemonic + ':'), then these strings
+# are converted to their mnemonic-expected output, without the 4 * '\' & ':',
+# just before actual output; (this is done by local_unescape())
+sub xml_escape($) {
+	my $text = shift;
+	if (($output_mode eq "text") || ($output_mode eq "man")) {
+		return $text;
+	}
+	$text =~ s/\&/\\\\\\amp;/g;
+	$text =~ s/\</\\\\\\lt;/g;
+	$text =~ s/\>/\\\\\\gt;/g;
+	return $text;
+}
+
+# xml_unescape: reverse the effects of xml_escape
+sub xml_unescape($) {
+	my $text = shift;
+	if (($output_mode eq "text") || ($output_mode eq "man")) {
+		return $text;
+	}
+	$text =~ s/\\\\\\amp;/\&/g;
+	$text =~ s/\\\\\\lt;/</g;
+	$text =~ s/\\\\\\gt;/>/g;
+	return $text;
+}
+
+# convert local escape strings to html
+# local escape strings look like:  '\\\\menmonic:' (that's 4 backslashes)
+sub local_unescape($) {
+	my $text = shift;
+	if (($output_mode eq "text") || ($output_mode eq "man")) {
+		return $text;
+	}
+	$text =~ s/\\\\\\\\lt:/</g;
+	$text =~ s/\\\\\\\\gt:/>/g;
+	return $text;
+}
+
+sub process_file($) {
+    my $file;
+    my $identifier;
+    my $func;
+    my $descr;
+    my $in_purpose = 0;
+    my $initial_section_counter = $section_counter;
+    my ($orig_file) = @_;
+
+    if (defined($ENV{'SRCTREE'})) {
+	$file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
+    }
+    else {
+	$file = $orig_file;
+    }
+    if (defined($source_map{$file})) {
+	$file = $source_map{$file};
+    }
+
+    if (!open(IN,"<$file")) {
+	print STDERR "Error: Cannot open file $file\n";
+	++$errors;
+	return;
+    }
+
+    $. = 1;
+
+    $section_counter = 0;
+    while (<IN>) {
+	while (s/\\\s*$//) {
+	    $_ .= <IN>;
+	}
+	if ($state == 0) {
+	    if (/$doc_start/o) {
+		$state = 1;		# next line is always the function name
+		$in_doc_sect = 0;
+	    }
+	} elsif ($state == 1) {	# this line is the function name (always)
+	    if (/$doc_block/o) {
+		$state = 4;
+		$contents = "";
+		if ( $1 eq "" ) {
+			$section = $section_intro;
+		} else {
+			$section = $1;
+		}
+	    }
+	    elsif (/$doc_decl/o) {
+		$identifier = $1;
+		if (/\s*([\w\s]+?)\s*-/) {
+		    $identifier = $1;
+		}
+
+		$state = 2;
+		if (/-(.*)/) {
+		    # strip leading/trailing/multiple spaces
+		    $descr= $1;
+		    $descr =~ s/^\s*//;
+		    $descr =~ s/\s*$//;
+		    $descr =~ s/\s+/ /g;
+		    $declaration_purpose = xml_escape($descr);
+		    $in_purpose = 1;
+		} else {
+		    $declaration_purpose = "";
+		}
+
+		if (($declaration_purpose eq "") && $verbose) {
+			print STDERR "${file}:$.: warning: missing initial short description on line:\n";
+			print STDERR $_;
+			++$warnings;
+		}
+
+		if ($identifier =~ m/^struct/) {
+		    $decl_type = 'struct';
+		} elsif ($identifier =~ m/^union/) {
+		    $decl_type = 'union';
+		} elsif ($identifier =~ m/^enum/) {
+		    $decl_type = 'enum';
+		} elsif ($identifier =~ m/^typedef/) {
+		    $decl_type = 'typedef';
+		} else {
+		    $decl_type = 'function';
+		}
+
+		if ($verbose) {
+		    print STDERR "${file}:$.: info: Scanning doc for $identifier\n";
+		}
+	    } else {
+		print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
+		" - I thought it was a doc line\n";
+		++$warnings;
+		$state = 0;
+	    }
+	} elsif ($state == 2) {	# look for head: lines, and include content
+	    if (/$doc_sect/o) {
+		$newsection = $1;
+		$newcontents = $2;
+
+		if (($contents ne "") && ($contents ne "\n")) {
+		    if (!$in_doc_sect && $verbose) {
+			print STDERR "${file}:$.: warning: contents before sections\n";
+			++$warnings;
+		    }
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		}
+
+		$in_doc_sect = 1;
+		$in_purpose = 0;
+		$contents = $newcontents;
+		if ($contents ne "") {
+		    while ((substr($contents, 0, 1) eq " ") ||
+			substr($contents, 0, 1) eq "\t") {
+			    $contents = substr($contents, 1);
+		    }
+		    $contents .= "\n";
+		}
+		$section = $newsection;
+	    } elsif (/$doc_end/) {
+		if (($contents ne "") && ($contents ne "\n")) {
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		    $contents = "";
+		}
+		# look for doc_com + <text> + doc_end:
+		if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
+		    print STDERR "${file}:$.: warning: suspicious ending line: $_";
+		    ++$warnings;
+		}
+
+		$prototype = "";
+		$state = 3;
+		$brcount = 0;
+#		print STDERR "end of doc comment, looking for prototype\n";
+	    } elsif (/$doc_content/) {
+		# miguel-style comment kludge, look for blank lines after
+		# @parameter line to signify start of description
+		if ($1 eq "") {
+		    if ($section =~ m/^@/ || $section eq $section_context) {
+			dump_section($file, $section, xml_escape($contents));
+			$section = $section_default;
+			$contents = "";
+		    } else {
+			$contents .= "\n";
+		    }
+		    $in_purpose = 0;
+		} elsif ($in_purpose == 1) {
+		    # Continued declaration purpose
+		    chomp($declaration_purpose);
+		    $declaration_purpose .= " " . xml_escape($1);
+		    $declaration_purpose =~ s/\s+/ /g;
+		} else {
+		    $contents .= $1 . "\n";
+		}
+	    } else {
+		# i dont know - bad line?  ignore.
+		print STDERR "${file}:$.: warning: bad line: $_";
+		++$warnings;
+	    }
+	} elsif ($state == 5) { # scanning for split parameters
+	    # First line (state 1) needs to be a @parameter
+	    if ($split_doc_state == 1 && /$doc_split_sect/o) {
+		$section = $1;
+		$contents = $2;
+		if ($contents ne "") {
+		    while ((substr($contents, 0, 1) eq " ") ||
+		           substr($contents, 0, 1) eq "\t") {
+			$contents = substr($contents, 1);
+		    }
+		$contents .= "\n";
+		}
+		$split_doc_state = 2;
+	    # Documentation block end */
+	    } elsif (/$doc_split_end/) {
+		if (($contents ne "") && ($contents ne "\n")) {
+		    dump_section($file, $section, xml_escape($contents));
+		    $section = $section_default;
+		    $contents = "";
+		}
+		$state = 3;
+		$split_doc_state = 0;
+	    # Regular text
+	    } elsif (/$doc_content/) {
+		if ($split_doc_state == 2) {
+		    $contents .= $1 . "\n";
+		} elsif ($split_doc_state == 1) {
+		    $split_doc_state = 4;
+		    print STDERR "Warning(${file}:$.): ";
+		    print STDERR "Incorrect use of kernel-doc format: $_";
+		    ++$warnings;
+		}
+	    }
+	} elsif ($state == 3) {	# scanning for function '{' (end of prototype)
+	    if (/$doc_split_start/) {
+		$state = 5;
+		$split_doc_state = 1;
+	    } elsif ($decl_type eq 'function') {
+		process_state3_function($_, $file);
+	    } else {
+		process_state3_type($_, $file);
+	    }
+	} elsif ($state == 4) {
+		# Documentation block
+		if (/$doc_block/) {
+			dump_doc_section($file, $section, xml_escape($contents));
+			$contents = "";
+			$function = "";
+			%constants = ();
+			%parameterdescs = ();
+			%parametertypes = ();
+			@parameterlist = ();
+			%sections = ();
+			@sectionlist = ();
+			$prototype = "";
+			if ( $1 eq "" ) {
+				$section = $section_intro;
+			} else {
+				$section = $1;
+			}
+		}
+		elsif (/$doc_end/)
+		{
+			dump_doc_section($file, $section, xml_escape($contents));
+			$contents = "";
+			$function = "";
+			%constants = ();
+			%parameterdescs = ();
+			%parametertypes = ();
+			@parameterlist = ();
+			%sections = ();
+			@sectionlist = ();
+			$prototype = "";
+			$state = 0;
+		}
+		elsif (/$doc_content/)
+		{
+			if ( $1 eq "" )
+			{
+				$contents .= $blankline;
+			}
+			else
+			{
+				$contents .= $1 . "\n";
+			}
+		}
+	}
+    }
+    if ($initial_section_counter == $section_counter) {
+	print STDERR "${file}:1: warning: no structured comments found\n";
+	if (($function_only == 1) && ($show_not_found == 1)) {
+	    print STDERR "    Was looking for '$_'.\n" for keys %function_table;
+	}
+	if ($output_mode eq "xml") {
+	    # The template wants at least one RefEntry here; make one.
+	    print "<refentry>\n";
+	    print " <refnamediv>\n";
+	    print "  <refname>\n";
+	    print "   ${orig_file}\n";
+	    print "  </refname>\n";
+	    print "  <refpurpose>\n";
+	    print "   Document generation inconsistency\n";
+	    print "  </refpurpose>\n";
+	    print " </refnamediv>\n";
+	    print " <refsect1>\n";
+	    print "  <title>\n";
+	    print "   Oops\n";
+	    print "  </title>\n";
+	    print "  <warning>\n";
+	    print "   <para>\n";
+	    print "    The template for this document tried to insert\n";
+	    print "    the structured comment from the file\n";
+	    print "    <filename>${orig_file}</filename> at this point,\n";
+	    print "    but none was found.\n";
+	    print "    This dummy section is inserted to allow\n";
+	    print "    generation to continue.\n";
+	    print "   </para>\n";
+	    print "  </warning>\n";
+	    print " </refsect1>\n";
+	    print "</refentry>\n";
+	}
+    }
+}
+
+
+$kernelversion = get_kernel_version();
+
+# generate a sequence of code that will splice in highlighting information
+# using the s// operator.
+for (my $k = 0; $k < @highlights; $k++) {
+    my $pattern = $highlights[$k][0];
+    my $result = $highlights[$k][1];
+#   print STDERR "scanning pattern:$pattern, highlight:($result)\n";
+    $dohighlight .=  "\$contents =~ s:$pattern:$result:gs;\n";
+}
+
+# Read the file that maps relative names to absolute names for
+# separate source and object directories and for shadow trees.
+if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
+	my ($relname, $absname);
+	while(<SOURCE_MAP>) {
+		chop();
+		($relname, $absname) = (split())[0..1];
+		$relname =~ s:^/+::;
+		$source_map{$relname} = $absname;
+	}
+	close(SOURCE_MAP);
+}
+
+foreach (@ARGV) {
+    chomp;
+    process_file($_);
+}
+if ($verbose && $errors) {
+  print STDERR "$errors errors\n";
+}
+if ($verbose && $warnings) {
+  print STDERR "$warnings warnings\n";
+}
+
+exit($errors);
diff --git a/libdmmp/docs/libdmmp.h.3 b/libdmmp/docs/libdmmp.h.3
new file mode 100644
index 0000000..45d5be3
--- /dev/null
+++ b/libdmmp/docs/libdmmp.h.3
@@ -0,0 +1,113 @@
+.TH "libdmmp.h" 3 "January 2016" "Device Mapper Multipath API - libdmmp Manual"
+
+.SH NAME
+libdmmp.h \- Device Mapper Multipath API.
+
+.SH SYNOPSIS
+#include <libdmmp/libdmmp.h>
+
+.SH "DESCRIPTION"
+
+All the libdmmp public functions ships its own man pages.
+Use 'man 3 <function_name>' to check the detail usage.
+
+.SH "USAGE"
+
+To use libdmmp in your project, we suggest to use the 'pkg-config' way:
+
+ * Add this line into your configure.ac:
+
+    PKG_CHECK_MODULES([LIBDMMP], [libdmmp])
+
+ * Add these lines into your Makefile.am:
+
+    foo_LDFLAGS += $(LIBDMMP_LIBS)
+    foo_CFLAGS += $(LIBDMMP_CFLAGS)
+
+.SH LOG HANDLING
+
+The log handler function could be set via 'dmmp_context_log_func_set()'.
+The log priority could be set via 'dmmp_context_log_priority_set()'.
+
+By default, the log priorities is 'DMMP_LOG_PRIORITY_WARNING'.
+By default, the log handler is print log to STDERR, and its code is listed
+below in case you want to create your own log handler.
+
+        static int _DMMP_LOG_STRERR_ALIGN_WIDTH = 80;
+
+        static void _log_stderr(struct dmmp_context *ctx,
+                                enum dmmp_log_priority priority,
+                                const char *file, int line,
+                                const char *func_name,
+                                const char *format, va_list args)
+        {
+            int printed_bytes = 0;
+
+            printed_bytes += fprintf(stderr, "libdmmp %s: ",
+                                     dmmp_log_priority_str(priority));
+            printed_bytes += vfprintf(stderr, format, args);
+            userdata = dmmp_context_userdata_get(ctx);
+            if (userdata != NULL)
+                fprintf(stderr, "(with user data at memory address %p)",
+                        userdata);
+
+            if (printed_bytes < _DMMP_LOG_STRERR_ALIGN_WIDTH) {
+                fprintf(stderr, "%*s # %s:%s():%d\n",
+                        _DMMP_LOG_STRERR_ALIGN_WIDTH - printed_bytes, "", file,
+                        func_name, line);
+            } else {
+                fprintf(stderr, " # %s:%s():%d\n", file, func_name, line);
+            }
+        }
+
+
+.SH "SAMPLE CODE"
+
+    #include <libdmmp/libdmmp.h>
+
+    int main(int argc, char *argv[]) {
+        struct dmmp_context *ctx = NULL;
+        struct dmmp_mpath **dmmp_mps = NULL;
+        struct dmmp_path_group **dmmp_pgs = NULL;
+        struct dmmp_path **dmmp_ps = NULL;
+        uint32_t dmmp_mp_count = 0;
+        uint32_t dmmp_pg_count = 0;
+        uint32_t dmmp_p_count = 0;
+        const char *name = NULL;
+        const char *wwid = NULL;
+        uint32_t i = 0;
+        int rc = DMMP_OK;
+
+        ctx = dmmp_context_new();
+        dmmp_context_log_priority_set(ctx, DMMP_LOG_PRIORITY_DEBUG);
+        // By default, log will be printed to STDERR, you could
+        // change that via dmmp_context_log_func_set()
+        rc = dmmp_mpath_array_get(ctx, &dmmp_mps, &dmmp_mp_count);
+        if (rc != DMMP_OK) {
+            printf("dmmp_mpath_array_get() failed with %d: %s", rc,
+                   dmmp_strerror(rc));
+            goto out;
+        }
+        for (i = 0; i < dmmp_mp_count; ++i) {
+                name = dmmp_mpath_name_get(dmmp_mps[i]);
+                wwid = dmmp_mpath_wwid_get(dmmp_mps[i]);
+                printf("dmmp_mpath_array_get(): Got mpath: %s %s\n", name,
+                       wwid);
+                // You could use dmmp_path_group_array_get() to retrieve
+                // path group information and then invoke dmmp_path_array_get()
+                // for path information.
+        }
+
+     out:
+        dmmp_context_free(ctx);
+        dmmp_mpath_array_free(dmmp_mps, dmmp_mp_count);
+        if (rc != DMMP_OK)
+            exit(1);
+        exit(0);
+    }
+
+.SH "LICENSE"
+GPLv2+
+
+.SH "BUG"
+Please report bug to <dm-devel@redhat.com>
diff --git a/libdmmp/docs/split-man.pl b/libdmmp/docs/split-man.pl
new file mode 100644
index 0000000..452fd8a
--- /dev/null
+++ b/libdmmp/docs/split-man.pl
@@ -0,0 +1,41 @@
+#!/usr/bin/perl
+# Originally From:
+# https://www.kernel.org/doc/Documentation/kernel-doc-nano-HOWTO.txt
+#
+# Changes:
+#   * Create manpage section 3 instead of 9.
+#   * Replace 'Kernel Hackers Manual' to
+#       'Device Mapper Multipath API - libdmmp Manual'
+#   * Remove LINUX from header.
+#   * Remove DMMP_DLL_EXPORT.
+$man_sec_num = 3;
+$title = 'Device Mapper Multipath API - libdmmp Manual';
+
+if ( $#ARGV < 0 ) {
+    die "where do I put the results?\n";
+}
+
+mkdir $ARGV[0], 0777;
+$state = 0;
+while (<STDIN>) {
+    s/DMMP_DLL_EXPORT//g;
+    if (/^\.TH \"[^\"]*\" 9 \"([^\"]*)\"/) {
+        if ( $state == 1 ) { close OUT }
+        $state = 1;
+        $fn    = "$ARGV[0]/$1.$man_sec_num";
+        print STDERR "Creating $fn\n";
+        open OUT, ">$fn" or die "can't open $fn: $!\n";
+
+        # Change man page code from 9 to $man_sec_num;
+        s/^\.TH (\"[^\"]*\") 9 \"([^\"]*)\"/\.TH $1 $man_sec_num \"$2\"/;
+        s/Kernel Hacker's Manual/$title/g;
+        s/LINUX//g;
+
+        print OUT $_;
+    }
+    elsif ( $state != 0 ) {
+        print OUT $_;
+    }
+}
+
+close OUT;
diff --git a/libdmmp/libdmmp.c b/libdmmp/libdmmp.c
new file mode 100644
index 0000000..e29a639
--- /dev/null
+++ b/libdmmp/libdmmp.c
@@ -0,0 +1,286 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <libudev.h>
+#include <errno.h>
+#include <libdevmapper.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <assert.h>
+#include <json.h>
+#include <mpath_cmd.h>
+
+#include "libdmmp/libdmmp.h"
+#include "libdmmp_private.h"
+
+#define _DEFAULT_UXSOCK_TIMEOUT		60000
+/* ^ 60 seconds. On system with 10k sdX, dmmp_mpath_array_get()
+ *   only take 3.5 seconds, so this default value should be OK for most users.
+ */
+
+#define _DMMP_IPC_SHOW_JSON_CMD			"show maps json"
+#define _DMMP_JSON_MAJOR_KEY			"major_version"
+#define _DMMP_JSON_MAJOR_VERSION		0
+#define _DMMP_JSON_MAPS_KEY			"maps"
+#define _ERRNO_STR_BUFF_SIZE			256
+
+struct dmmp_context {
+	void (*log_func)(struct dmmp_context *ctx, int priority,
+			 const char *file, int line, const char *func_name,
+			 const char *format, va_list args);
+	int log_priority;
+	void *userdata;
+	unsigned int tmo;
+};
+
+_dmmp_getter_func_gen(dmmp_context_log_priority_get,
+		      struct dmmp_context, ctx, log_priority,
+		      int);
+
+_dmmp_getter_func_gen(dmmp_context_userdata_get, struct dmmp_context, ctx,
+		      userdata, void *);
+
+_dmmp_getter_func_gen(dmmp_context_timeout_get, struct dmmp_context, ctx, tmo,
+		      unsigned int);
+
+_dmmp_array_free_func_gen(dmmp_mpath_array_free, struct dmmp_mpath,
+			  _dmmp_mpath_free);
+
+void _dmmp_log(struct dmmp_context *ctx, int priority, const char *file,
+	       int line, const char *func_name, const char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	ctx->log_func(ctx, priority, file, line, func_name, format, args);
+	va_end(args);
+}
+
+struct dmmp_context *dmmp_context_new(void)
+{
+	struct dmmp_context *ctx = NULL;
+
+	ctx = (struct dmmp_context *) malloc(sizeof(struct dmmp_context));
+
+	if (ctx == NULL)
+		return NULL;
+
+	ctx->log_func = _dmmp_log_stderr;
+	ctx->log_priority = DMMP_LOG_PRIORITY_DEFAULT;
+	ctx->userdata = NULL;
+	ctx->tmo = _DEFAULT_UXSOCK_TIMEOUT;
+
+	return ctx;
+}
+
+void dmmp_context_free(struct dmmp_context *ctx)
+{
+	free(ctx);
+}
+
+void dmmp_context_log_priority_set(struct dmmp_context *ctx, int priority)
+{
+	assert(ctx != NULL);
+	ctx->log_priority = priority;
+}
+
+void dmmp_context_timeout_set(struct dmmp_context *ctx, unsigned int tmo)
+{
+	assert(ctx != NULL);
+	ctx->tmo = tmo;
+}
+
+void dmmp_context_log_func_set
+	(struct dmmp_context *ctx,
+	 void (*log_func)(struct dmmp_context *ctx, int priority,
+			  const char *file, int line, const char *func_name,
+			  const char *format, va_list args))
+{
+	assert(ctx != NULL);
+	ctx->log_func = log_func;
+}
+
+void dmmp_context_userdata_set(struct dmmp_context *ctx, void *userdata)
+{
+	assert(ctx != NULL);
+	ctx->userdata = userdata;
+}
+
+int dmmp_mpath_array_get(struct dmmp_context *ctx,
+			 struct dmmp_mpath ***dmmp_mps, uint32_t *dmmp_mp_count)
+{
+	struct dmmp_mpath *dmmp_mp = NULL;
+	int rc = DMMP_OK;
+	char *j_str = NULL;
+	json_object *j_obj = NULL;
+	json_object *j_obj_map = NULL;
+	enum json_tokener_error j_err = json_tokener_success;
+	json_tokener *j_token = NULL;
+	struct array_list *ar_maps = NULL;
+	uint32_t i = 0;
+	int cur_json_major_version = -1;
+	int ar_maps_len = -1;
+	int socket_fd = -1;
+	int errno_save = 0;
+	char errno_str_buff[_ERRNO_STR_BUFF_SIZE];
+
+	assert(ctx != NULL);
+	assert(dmmp_mps != NULL);
+	assert(dmmp_mp_count != NULL);
+
+	*dmmp_mps = NULL;
+	*dmmp_mp_count = 0;
+
+	socket_fd = mpath_connect();
+	if (socket_fd == -1) {
+		errno_save = errno;
+		memset(errno_str_buff, 0, _ERRNO_STR_BUFF_SIZE);
+		strerror_r(errno_save, errno_str_buff, _ERRNO_STR_BUFF_SIZE);
+		if (errno_save == ECONNREFUSED) {
+			rc = DMMP_ERR_NO_DAEMON;
+			_error(ctx, "Socket connection refuse. "
+			       "Maybe multipathd daemon is not running");
+		} else {
+			_error(ctx, "IPC failed with error %d(%s)", errno_save,
+			       errno_str_buff);
+			rc = DMMP_ERR_IPC_ERROR;
+		}
+		goto out;
+	}
+
+	if (mpath_process_cmd(socket_fd, _DMMP_IPC_SHOW_JSON_CMD,
+			      &j_str, ctx->tmo) != 0) {
+		errno_save = errno;
+		memset(errno_str_buff, 0, _ERRNO_STR_BUFF_SIZE);
+		strerror_r(errno_save, errno_str_buff, _ERRNO_STR_BUFF_SIZE);
+		mpath_disconnect(socket_fd);
+		if (errno_save == ETIMEDOUT) {
+			rc = DMMP_ERR_IPC_TIMEOUT;
+			_error(ctx, "IPC communication timeout, try to "
+			       "increase it via dmmp_context_timeout_set()");
+			goto out;
+		}
+		_error(ctx, "IPC failed when process command '%s' with "
+		       "error %d(%s)", _DMMP_IPC_SHOW_JSON_CMD, errno_save,
+		       errno_str_buff);
+		rc = DMMP_ERR_IPC_ERROR;
+		goto out;
+	}
+
+	if ((j_str == NULL) || (strlen(j_str) == 0)) {
+		_error(ctx, "IPC return empty reply for command %s",
+		       _DMMP_IPC_SHOW_JSON_CMD);
+		rc = DMMP_ERR_IPC_ERROR;
+		goto out;
+	}
+
+	_debug(ctx, "Got json output from multipathd: '%s'", j_str);
+	j_token = json_tokener_new();
+	if (j_token == NULL) {
+		rc = DMMP_ERR_BUG;
+		_error(ctx, "BUG: json_tokener_new() retuned NULL");
+		goto out;
+	}
+	j_obj = json_tokener_parse_ex(j_token, j_str, strlen(j_str) + 1);
+
+	if (j_obj == NULL) {
+		rc = DMMP_ERR_IPC_ERROR;
+		j_err = json_tokener_get_error(j_token);
+		_error(ctx, "Failed to parse JSON output from multipathd IPC: "
+		       "%s", json_tokener_error_desc(j_err));
+		goto out;
+	}
+
+	_json_obj_get_value(ctx, j_obj, cur_json_major_version,
+			    _DMMP_JSON_MAJOR_KEY, json_type_int,
+			    json_object_get_int, rc, out);
+
+	if (cur_json_major_version != _DMMP_JSON_MAJOR_VERSION) {
+		rc = DMMP_ERR_INCOMPATIBLE;
+		_error(ctx, "Incompatible multipathd JSON major version %d, "
+		       "should be %d", cur_json_major_version,
+		       _DMMP_JSON_MAJOR_VERSION);
+		goto out;
+	}
+	_debug(ctx, "multipathd JSON major version(%d) check pass",
+	       _DMMP_JSON_MAJOR_VERSION);
+
+	_json_obj_get_value(ctx, j_obj, ar_maps, _DMMP_JSON_MAPS_KEY,
+			    json_type_array, json_object_get_array, rc, out);
+
+	if (ar_maps == NULL) {
+		rc = DMMP_ERR_BUG;
+		_error(ctx, "BUG: Got NULL map array from "
+		       "_json_obj_get_value()");
+		goto out;
+	}
+
+	ar_maps_len = array_list_length(ar_maps);
+	if (ar_maps_len < 0) {
+		rc = DMMP_ERR_BUG;
+		_error(ctx, "BUG: Got negative length for ar_maps");
+		goto out;
+	}
+	else if (ar_maps_len == 0)
+		goto out;
+	else
+		*dmmp_mp_count = ar_maps_len & UINT32_MAX;
+
+	*dmmp_mps = (struct dmmp_mpath **)
+		malloc(sizeof(struct dmmp_mpath *) * (*dmmp_mp_count));
+	_dmmp_alloc_null_check(ctx, dmmp_mps, rc, out);
+	for (; i < *dmmp_mp_count; ++i)
+		(*dmmp_mps)[i] = NULL;
+
+	for (i = 0; i < *dmmp_mp_count; ++i) {
+		j_obj_map = array_list_get_idx(ar_maps, i);
+		if (j_obj_map == NULL) {
+			rc = DMMP_ERR_BUG;
+			_error(ctx, "BUG: array_list_get_idx() return NULL");
+			goto out;
+		}
+
+		dmmp_mp = _dmmp_mpath_new();
+		_dmmp_alloc_null_check(ctx, dmmp_mp, rc, out);
+		(*dmmp_mps)[i] = dmmp_mp;
+		_good(_dmmp_mpath_update(ctx, dmmp_mp, j_obj_map), rc, out);
+	}
+
+out:
+	if (socket_fd >= 0)
+		mpath_disconnect(socket_fd);
+	free(j_str);
+	if (j_token != NULL)
+		json_tokener_free(j_token);
+	if (j_obj != NULL)
+		json_object_put(j_obj);
+
+	if (rc != DMMP_OK) {
+		dmmp_mpath_array_free(*dmmp_mps, *dmmp_mp_count);
+		*dmmp_mps = NULL;
+		*dmmp_mp_count = 0;
+	}
+
+	return rc;
+}
diff --git a/libdmmp/libdmmp.pc.in b/libdmmp/libdmmp.pc.in
new file mode 100644
index 0000000..ebb8cad
--- /dev/null
+++ b/libdmmp/libdmmp.pc.in
@@ -0,0 +1,9 @@
+includedir=__INCLUDEDIR__
+libdir=__LIBDIR__
+
+Name: libdmmp
+Version: __VERSION__
+Description: Device mapper multipath management library
+Requires:
+Libs: -L${libdir} -ldmmp
+Cflags: -I${includedir}
diff --git a/libdmmp/libdmmp/libdmmp.h b/libdmmp/libdmmp/libdmmp.h
new file mode 100644
index 0000000..8de60c0
--- /dev/null
+++ b/libdmmp/libdmmp/libdmmp.h
@@ -0,0 +1,607 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+
+#ifndef _LIB_DMMP_H_
+#define _LIB_DMMP_H_
+
+#include <stdint.h>
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define DMMP_DLL_EXPORT		__attribute__ ((visibility ("default")))
+#define DMMP_DLL_LOCAL		__attribute__ ((visibility ("hidden")))
+
+#define DMMP_OK				0
+#define DMMP_ERR_BUG			1
+#define DMMP_ERR_NO_MEMORY		2
+#define DMMP_ERR_IPC_TIMEOUT		3
+#define DMMP_ERR_IPC_ERROR		4
+#define DMMP_ERR_NO_DAEMON		5
+#define DMMP_ERR_INCOMPATIBLE		6
+
+/*
+ * Use the syslog severity level as log priority
+ */
+#define DMMP_LOG_PRIORITY_ERROR		3
+#define DMMP_LOG_PRIORITY_WARNING	4
+#define DMMP_LOG_PRIORITY_INFO		6
+#define DMMP_LOG_PRIORITY_DEBUG		7
+
+#define DMMP_LOG_PRIORITY_DEFAULT	DMMP_LOG_PRIORITY_WARNING
+
+/**
+ * dmmp_log_priority_str() - Convert log priority to string.
+ *
+ * Convert log priority to string (const char *).
+ * @priority:
+ *	int. Log priority.
+ * Return:
+ *	const char *. Valid string are\::
+ *
+ *	* "ERROR" for DMMP_LOG_PRIORITY_ERROR
+ *
+ *	* "WARN " for DMMP_LOG_PRIORITY_WARNING
+ *
+ *	* "INFO " for DMMP_LOG_PRIORITY_INFO
+ *
+ *	* "DEBUG" for DMMP_LOG_PRIORITY_DEBUG
+ *
+ *	* "Invalid argument" for invalid log priority.
+ */
+DMMP_DLL_EXPORT const char *dmmp_log_priority_str(int priority);
+
+DMMP_DLL_EXPORT struct dmmp_context;
+
+DMMP_DLL_EXPORT struct dmmp_mpath;
+
+DMMP_DLL_EXPORT struct dmmp_path_group;
+
+#define DMMP_PATH_GROUP_STATUS_UNKNOWN	0
+#define DMMP_PATH_GROUP_STATUS_ENABLED	1
+#define DMMP_PATH_GROUP_STATUS_DISABLED	2
+#define DMMP_PATH_GROUP_STATUS_ACTIVE	3
+
+DMMP_DLL_EXPORT struct dmmp_path;
+
+#define DMMP_PATH_STATUS_UNKNOWN	0
+//#define DMMP_PATH_STATUS_UNCHECKED	1
+// ^ print.h does not expose this.
+#define DMMP_PATH_STATUS_DOWN		2
+#define DMMP_PATH_STATUS_UP		3
+#define DMMP_PATH_STATUS_SHAKY		4
+#define DMMP_PATH_STATUS_GHOST		5
+#define DMMP_PATH_STATUS_PENDING	6
+#define DMMP_PATH_STATUS_TIMEOUT	7
+//#define DMMP_PATH_STATUS_REMOVED	8
+// ^ print.h does not expose this.
+#define DMMP_PATH_STATUS_DELAYED	9
+
+/**
+ * dmmp_strerror() - Convert error code to string.
+ *
+ * Convert error code (int) to string (const char *):
+ *
+ *	* DMMP_OK -- "OK"
+ *
+ *	* DMMP_ERR_BUG -- "BUG of libdmmp library"
+ *
+ *	* DMMP_ERR_NO_MEMORY -- "Out of memory"
+ *
+ *	* DMMP_ERR_IPC_TIMEOUT -- "Timeout when communicate with multipathd,
+ *	  try to set bigger timeout value via dmmp_context_timeout_set ()"
+ *
+ *	* DMMP_ERR_IPC_ERROR -- "Error when communicate with multipathd daemon"
+ *
+ *	* DMMP_ERR_NO_DAEMON -- "The multipathd daemon not started"
+ *
+ *	* DMMP_ERR_INCOMPATIBLE -- "The multipathd daemon version is not
+ *	  compatible with current library"
+ *
+ *	* Other invalid error number -- "Invalid argument"
+ *
+ * @rc:
+ *	int. Return code by libdmmp functions. When provided error code is not a
+ *	valid error code, return "Invalid argument".
+ * Return:
+ *	const char *. The meaning of provided error code.
+ *
+ */
+DMMP_DLL_EXPORT const char *dmmp_strerror(int rc);
+
+/**
+ * dmmp_context_new() - Create struct dmmp_context.
+ *
+ * The default logging level is
+ * DMMP_LOG_PRIORITY_WARNING/DMMP_LOG_PRIORITY_DEFAULT which means
+ * only warning and error message will be forward to log handler function.
+ * The default log handler function will print log message to STDERR,
+ * to change so, please use dmmp_context_log_func_set() to set your own log
+ * handler, check manpage libdmmp.h(3) for detail.
+ *
+ * Return:
+ *	Pointer of 'struct dmmp_context'. Should be freed by
+ *	dmmp_context_free().
+ */
+DMMP_DLL_EXPORT struct dmmp_context *dmmp_context_new(void);
+
+/**
+ * dmmp_context_free() - Release the memory of struct dmmp_context.
+ *
+ * Release the memory of struct dmmp_context, but the userdata memory defined
+ * via dmmp_context_userdata_set() will not be touched.
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_context_free(struct dmmp_context *ctx);
+
+/**
+ * dmmp_context_timeout_set() - Set IPC timeout.
+ *
+ * By default, the IPC to multipathd daemon will timeout after 60 seconds.
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ *
+ * @tmo:
+ *	Timeout in milliseconds(1 seconds equal 1000 milliseconds).
+ *
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_context_timeout_set(struct dmmp_context *ctx,
+					      unsigned int tmo);
+
+/**
+ * dmmp_context_timeout_get() - Get IPC timeout.
+ *
+ * Retrieve timeout value of IPC connection to multipathd daemon.
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ *
+ * Return:
+ *	unsigned int. Timeout in milliseconds.
+ */
+DMMP_DLL_EXPORT unsigned int dmmp_context_timeout_get(struct dmmp_context *ctx);
+
+/**
+ * dmmp_context_log_priority_set() - Set log priority.
+ *
+ * When library generates log message, only equal or more important(less value)
+ * message will be forwarded to log handler function.
+ * Valid log priority values are\::
+ *
+ *	* DMMP_LOG_PRIORITY_ERROR -- 3
+ *
+ *	* DMMP_LOG_PRIORITY_WARNING -- 4
+ *
+ *	* DMMP_LOG_PRIORITY_INFO -- 5
+ *
+ *	* DMMP_LOG_PRIORITY_DEBUG -- 7
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ *
+ * @priority:
+ *	int, log priority.
+ *
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_context_log_priority_set(struct dmmp_context *ctx,
+						   int priority);
+
+/**
+ * dmmp_context_log_priority_get() - Get log priority.
+ *
+ * Retrieve current log priority. Valid log priority values are\::
+ *
+ *	* DMMP_LOG_PRIORITY_ERROR -- 3
+ *
+ *	* DMMP_LOG_PRIORITY_WARNING -- 4
+ *
+ *	* DMMP_LOG_PRIORITY_INFO -- 5
+ *
+ *	* DMMP_LOG_PRIORITY_DEBUG -- 7
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	int, log priority.
+ */
+DMMP_DLL_EXPORT int dmmp_context_log_priority_get(struct dmmp_context *ctx);
+
+/**
+ * dmmp_context_log_func_set() - Set log handler function.
+ *
+ * Set custom log handler. The log handler will be invoked when log message
+ * is equal or more important(less value) than log priority setting.
+ * Please check manpage libdmmp.h(3) for detail usage.
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @log_func:
+ *	Pointer of log handler function.
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_context_log_func_set
+	(struct dmmp_context *ctx,
+	 void (*log_func)
+	 (struct dmmp_context *ctx, int priority,
+	  const char *file, int line, const char *func_name,
+	  const char *format, va_list args));
+
+/**
+ * dmmp_context_userdata_set() - Set user data pointer.
+ *
+ * Store user data pointer into 'struct dmmp_context'.
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @userdata:
+ *	Pointer of user defined data.
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_context_userdata_set(struct dmmp_context *ctx,
+					       void *userdata);
+
+/**
+ * dmmp_context_userdata_get() - Get user data pointer.
+ *
+ * Retrieve user data pointer from 'struct dmmp_context'.
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	void *. Pointer of user defined data.
+ */
+DMMP_DLL_EXPORT void *dmmp_context_userdata_get(struct dmmp_context *ctx);
+
+/**
+ * dmmp_mpath_array_get() - Query all existing multipath devices.
+ *
+ * Query all existing multipath devices and store them into a pointer array.
+ * The memory of 'dmmp_mps' should be freed via dmmp_mpath_array_free().
+ *
+ * @ctx:
+ *	Pointer of 'struct dmmp_context'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @dmmp_mps:
+ *	Output pointer array of 'struct dmmp_mpath'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @dmmp_mp_count:
+ *	Output pointer of uint32_t. Hold the size of 'dmmp_mps' pointer array.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ *
+ * Return:
+ *	int. Valid error codes are\::
+ *
+ *	* DMMP_OK
+ *
+ *	* DMMP_ERR_BUG
+ *
+ *	* DMMP_ERR_NO_MEMORY
+ *
+ *	* DMMP_ERR_NO_DAEMON
+ *
+ *	* DMMP_ERR_INCONSISTENT_DATA
+ *
+ *	Error number could be converted to string by dmmp_strerror().
+ */
+DMMP_DLL_EXPORT int dmmp_mpath_array_get(struct dmmp_context *ctx,
+					 struct dmmp_mpath ***dmmp_mps,
+					 uint32_t *dmmp_mp_count);
+
+/**
+ * dmmp_mpath_array_free() - Free 'struct dmmp_mpath' pointer array.
+ *
+ * Free the 'dmmp_mps' pointer array generated by dmmp_mpath_array_get().
+ * If provided 'dmmp_mps' pointer is NULL or dmmp_mp_count == 0, do nothing.
+ *
+ * @dmmp_mps:
+ *	Pointer of 'struct dmmp_mpath' array.
+ * @dmmp_mp_count:
+ *	uint32_t, the size of 'dmmp_mps' pointer array.
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_mpath_array_free(struct dmmp_mpath **dmmp_mps,
+					   uint32_t dmmp_mp_count);
+
+/**
+ * dmmp_mpath_wwid_get() - Retrieve WWID of certain mpath.
+ *
+ * @dmmp_mp:
+ *	Pointer of 'struct dmmp_mpath'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	const char *. No need to free this memory, the resources will get
+ *	freed when dmmp_mpath_array_free().
+ */
+DMMP_DLL_EXPORT const char *dmmp_mpath_wwid_get(struct dmmp_mpath *dmmp_mp);
+
+/**
+ * dmmp_mpath_name_get() - Retrieve name(alias) of certain mpath.
+ *
+ * Retrieve the name (also known as alias) of certain mpath.
+ * When the config 'user_friendly_names' been set 'no', the name will be
+ * identical to WWID retrieved by dmmp_mpath_wwid_get().
+ *
+ * @dmmp_mp:
+ *	Pointer of 'struct dmmp_mpath'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	const char *. No need to free this memory, the resources will get
+ *	freed when dmmp_mpath_array_free().
+ */
+DMMP_DLL_EXPORT const char *dmmp_mpath_name_get(struct dmmp_mpath *dmmp_mp);
+
+/**
+ * dmmp_path_group_array_get() - Retrieve path groups pointer array.
+ *
+ * Retrieve the path groups of certain mpath.
+ *
+ * The memory of output pointer array is hold by 'struct dmmp_mpath', no
+ * need to free this memory, the resources will got freed when
+ * dmmp_mpath_array_free().
+ *
+ * @dmmp_mp:
+ *	Pointer of 'struct dmmp_mpath'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @dmmp_pgs:
+ *	Output pointer of 'struct dmmp_path_group' pointer array.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @dmmp_pg_count:
+ *	Output pointer of uint32_t. Hold the size of 'dmmp_pgs' pointer array.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_path_group_array_get
+	(struct dmmp_mpath *dmmp_mp, struct dmmp_path_group ***dmmp_pgs,
+	 uint32_t *dmmp_pg_count);
+
+/**
+ * dmmp_path_group_id_get() - Retrieve path group ID.
+ *
+ * Retrieve the path group ID which could be used to switch active path group
+ * via command\::
+ *
+ *	multipathd -k'switch multipath mpathb group $id'
+ *
+ * @dmmp_pg:
+ *	Pointer of 'struct dmmp_path_group'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	uint32_t.
+ */
+DMMP_DLL_EXPORT uint32_t dmmp_path_group_id_get
+	(struct dmmp_path_group *dmmp_pg);
+
+/**
+ * dmmp_path_group_priority_get() - Retrieve path group priority.
+ *
+ * The enabled path group with highest priority will be next active path group
+ * if active path group down.
+ *
+ * @dmmp_pg:
+ *	Pointer of 'struct dmmp_path_group'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	uint32_t.
+ */
+DMMP_DLL_EXPORT uint32_t dmmp_path_group_priority_get
+	(struct dmmp_path_group *dmmp_pg);
+
+/**
+ * dmmp_path_group_status_get() - Retrieve path group status.
+ *
+ * The valid path group statuses are\::
+ *
+ *	* DMMP_PATH_GROUP_STATUS_UNKNOWN
+ *
+ *	* DMMP_PATH_GROUP_STATUS_ENABLED  -- standby to be active
+ *
+ *	* DMMP_PATH_GROUP_STATUS_DISABLED -- disabled due to all path down
+ *
+ *	* DMMP_PATH_GROUP_STATUS_ACTIVE -- selected to handle I/O
+ *
+ * @dmmp_pg:
+ *	Pointer of 'struct dmmp_path_group'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	uint32_t.
+ */
+DMMP_DLL_EXPORT uint32_t dmmp_path_group_status_get
+	(struct dmmp_path_group *dmmp_pg);
+
+/**
+ * dmmp_path_group_status_str() - Convert path group status to string.
+ *
+ * Convert path group status uint32_t to string (const char *).
+ *
+ * @pg_status:
+ *	uint32_t. Path group status.
+ *	When provided value is not a valid path group status, return "Invalid
+ *	argument".
+ * Return:
+ *	const char *. Valid string are\::
+ *
+ *	* "Invalid argument"
+ *
+ *	* "undef"
+ *
+ *	* "enabled"
+ *
+ *	* "disabled"
+ *
+ *	* "active"
+ */
+DMMP_DLL_EXPORT const char *dmmp_path_group_status_str(uint32_t pg_status);
+
+/**
+ * dmmp_path_group_selector_get() - Retrieve path group selector.
+ *
+ * Path group selector determine which path in active path group will be
+ * use to next I/O.
+ *
+ * @dmmp_pg:
+ *	Pointer of 'struct dmmp_path_group'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	const char *.
+ */
+DMMP_DLL_EXPORT const char *dmmp_path_group_selector_get
+	(struct dmmp_path_group *dmmp_pg);
+
+/**
+ * dmmp_path_array_get() - Retrieve path pointer array.
+ *
+ * The memory of output pointer array is hold by 'struct dmmp_mpath', no
+ * need to free this memory, the resources will got freed when
+ * dmmp_mpath_array_free().
+ *
+ * @dmmp_pg:
+ *	Pointer of 'struct dmmp_path_group'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @dmmp_ps:
+ *	Output pointer of 'struct dmmp_path' pointer array.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * @dmmp_p_count:
+ *	Output pointer of uint32_t. Hold the size of 'dmmp_ps' pointer array.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	void
+ */
+DMMP_DLL_EXPORT void dmmp_path_array_get(struct dmmp_path_group *dmmp_pg,
+					 struct dmmp_path ***dmmp_ps,
+					 uint32_t *dmmp_p_count);
+
+/**
+ * dmmp_path_blk_name_get() - Retrieve block name.
+ *
+ * Retrieve block name of certain path. The example of block names are 'sda',
+ * 'nvme0n1'.
+ *
+ * @dmmp_p:
+ *	Pointer of 'struct dmmp_path'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	const char *. No need to free this memory, the resources will get
+ *	freed when dmmp_mpath_array_free().
+ */
+DMMP_DLL_EXPORT const char *dmmp_path_blk_name_get(struct dmmp_path *dmmp_p);
+
+/**
+ * dmmp_path_status_get() - Retrieve the path status.
+ *
+ * The valid path statuses are\::
+ *
+ *	* DMMP_PATH_STATUS_UNKNOWN
+ *
+ *	* DMMP_PATH_STATUS_DOWN
+ *
+ *	Path is down and you shouldn't try to send commands to it.
+ *
+ *	* DMMP_PATH_STATUS_UP
+ *
+ *	Path is up and I/O can be sent to it.
+ *
+ *	* DMMP_PATH_STATUS_SHAKY
+ *
+ *	Only emc_clariion checker when path not available for "normal"
+ *	operations.
+ *
+ *	* DMMP_PATH_STATUS_GHOST
+ *
+ *	Only hp_sw and rdac checkers.
+ *	Indicates a "passive/standby" path on active/passive
+ *	HP arrays. These paths will return valid answers to certain SCSI
+ *	commands (tur, read_capacity, inquiry, start_stop), but will fail I/O
+ *	commands.
+ *	The path needs an initialization command to be sent to it in order for
+ *	I/Os to succeed.
+ *
+ *	* DMMP_PATH_STATUS_PENDING
+ *	Available for all async checkers when a check IO is in flight.
+ *
+ *	* DMMP_PATH_STATUS_TIMEOUT
+ *
+ *	Only tur checker when command timed out.
+ *
+ *	* DMMP_PATH_STATUS_DELAYED
+ *	If a path fails after being up for less than delay_watch_checks checks,
+ *	when it comes back up again, it will not be marked as up until it has
+ *	been up for delay_wait_checks checks. During this time, it is marked as
+ *	"delayed".
+ *
+ * @dmmp_p:
+ *	Pointer of 'struct dmmp_path'.
+ *	If this pointer is NULL, your program will be terminated by assert.
+ * Return:
+ *	uint32_t.
+ */
+DMMP_DLL_EXPORT uint32_t dmmp_path_status_get(struct dmmp_path *dmmp_p);
+
+/**
+ * dmmp_path_status_str() - Convert path status to string.
+ *
+ * Convert path status uint32_t to string (const char *):
+ *
+ *	* DMMP_PATH_STATUS_UNKNOWN -- "undef"
+ *	* DMMP_PATH_STATUS_DOWN -- "faulty"
+ *	* DMMP_PATH_STATUS_UP -- "ready"
+ *	* DMMP_PATH_STATUS_SHAKY -- "shaky"
+ *	* DMMP_PATH_STATUS_GHOST -- "ghost"
+ *	* DMMP_PATH_STATUS_PENDING -- "pending"
+ *	* DMMP_PATH_STATUS_TIMEOUT -- "timeout"
+ *	* DMMP_PATH_STATUS_REMOVED -- "removed"
+ *	* DMMP_PATH_STATUS_DELAYED -- "delayed"
+ *
+ * @path_status:
+ *	uint32_t. Path status.
+ *	When provided value is not a valid path status, return
+ *	"Invalid argument".
+ * Return:
+ *	const char *. The meaning of status value.
+ */
+DMMP_DLL_EXPORT const char *dmmp_path_status_str(uint32_t path_status);
+
+#ifdef __cplusplus
+} /* End of extern "C" */
+#endif
+
+#endif /* End of _LIB_DMMP_H_ */
diff --git a/libdmmp/libdmmp_misc.c b/libdmmp/libdmmp_misc.c
new file mode 100644
index 0000000..27f1161
--- /dev/null
+++ b/libdmmp/libdmmp_misc.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <limits.h>
+#include <assert.h>
+#include <json.h>
+
+#include "libdmmp/libdmmp.h"
+#include "libdmmp_private.h"
+
+#define _DMMP_LOG_STRERR_ALIGN_WIDTH	80
+/* ^ Only used in _dmmp_log_stderr() for pretty log output.
+ *   When provided log message is less than 80 bytes, fill it with space, then
+ *   print code file name, function name, line after the 80th bytes.
+ */
+
+static const struct _num_str_conv _DMMP_RC_MSG_CONV[] = {
+	{DMMP_OK, "OK"},
+	{DMMP_ERR_NO_MEMORY, "Out of memory"},
+	{DMMP_ERR_BUG, "BUG of libdmmp library"},
+	{DMMP_ERR_IPC_TIMEOUT, "Timeout when communicate with multipathd, "
+			       "try to increase it via "
+				"dmmp_context_timeout_set()"},
+	{DMMP_ERR_IPC_ERROR, "Error when communicate with multipathd daemon"},
+	{DMMP_ERR_NO_DAEMON, "The multipathd daemon not started"},
+	{DMMP_ERR_INCOMPATIBLE, "Incompatible multipathd daemon version"},
+};
+
+_dmmp_str_func_gen(dmmp_strerror, int, rc, _DMMP_RC_MSG_CONV);
+
+static const struct _num_str_conv _DMMP_PRI_CONV[] = {
+	{DMMP_LOG_PRIORITY_DEBUG, "DEBUG"},
+	{DMMP_LOG_PRIORITY_INFO, "INFO"},
+	{DMMP_LOG_PRIORITY_WARNING, "WARNING"},
+	{DMMP_LOG_PRIORITY_ERROR, "ERROR"},
+};
+_dmmp_str_func_gen(dmmp_log_priority_str, int, priority, _DMMP_PRI_CONV);
+
+void _dmmp_log_stderr(struct dmmp_context *ctx, int priority,
+		      const char *file, int line, const char *func_name,
+		      const char *format, va_list args)
+{
+	int printed_bytes = 0;
+	void *userdata = NULL;
+
+	printed_bytes += fprintf(stderr, "libdmmp %s: ",
+				 dmmp_log_priority_str(priority));
+	printed_bytes += vfprintf(stderr, format, args);
+
+	userdata = dmmp_context_userdata_get(ctx);
+	if (userdata != NULL)
+		fprintf(stderr, "(userdata address: %p)",
+			userdata);
+	/* ^ Just demonstrate how userdata could be used and
+	 *   bypass clang static analyzer about unused ctx argument warning
+	 */
+
+	if (printed_bytes < _DMMP_LOG_STRERR_ALIGN_WIDTH) {
+		fprintf(stderr, "%*s # %s:%s():%d\n",
+			_DMMP_LOG_STRERR_ALIGN_WIDTH - printed_bytes, "", file,
+			func_name, line);
+	} else {
+		fprintf(stderr, " # %s:%s():%d\n", file, func_name, line);
+	}
+}
diff --git a/libdmmp/libdmmp_mp.c b/libdmmp/libdmmp_mp.c
new file mode 100644
index 0000000..437a84c
--- /dev/null
+++ b/libdmmp/libdmmp_mp.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <json.h>
+
+#include "libdmmp/libdmmp.h"
+#include "libdmmp_private.h"
+
+struct dmmp_mpath {
+	char *wwid;
+	char *alias;
+	uint32_t dmmp_pg_count;
+	struct dmmp_path_group **dmmp_pgs;
+};
+
+_dmmp_getter_func_gen(dmmp_mpath_name_get, struct dmmp_mpath, dmmp_mp,
+		      alias, const char *);
+_dmmp_getter_func_gen(dmmp_mpath_wwid_get, struct dmmp_mpath, dmmp_mp,
+		      wwid, const char *);
+
+struct dmmp_mpath *_dmmp_mpath_new(void)
+{
+	struct dmmp_mpath *dmmp_mp = NULL;
+
+	dmmp_mp = (struct dmmp_mpath *) malloc(sizeof(struct dmmp_mpath));
+
+	if (dmmp_mp != NULL) {
+		dmmp_mp->wwid = NULL;
+		dmmp_mp->alias = NULL;
+		dmmp_mp->dmmp_pg_count = 0;
+		dmmp_mp->dmmp_pgs = NULL;
+	}
+	return dmmp_mp;
+}
+
+int _dmmp_mpath_update(struct dmmp_context *ctx, struct dmmp_mpath *dmmp_mp,
+		       json_object *j_obj_map)
+{
+	int rc = DMMP_OK;
+	const char *wwid = NULL;
+	const char *alias = NULL;
+	struct array_list *ar_pgs = NULL;
+	int ar_pgs_len = -1;
+	uint32_t i = 0;
+	struct dmmp_path_group *dmmp_pg = NULL;
+
+	assert(ctx != NULL);
+	assert(dmmp_mp != NULL);
+	assert(j_obj_map != NULL);
+
+	_json_obj_get_value(ctx, j_obj_map, wwid, "uuid", json_type_string,
+			    json_object_get_string, rc, out);
+	_json_obj_get_value(ctx, j_obj_map, alias, "name", json_type_string,
+			    json_object_get_string, rc, out);
+
+	_dmmp_null_or_empty_str_check(ctx, wwid, rc, out);
+	_dmmp_null_or_empty_str_check(ctx, alias, rc, out);
+
+	dmmp_mp->wwid = strdup(wwid);
+	_dmmp_alloc_null_check(ctx, dmmp_mp->wwid, rc, out);
+	dmmp_mp->alias = strdup(alias);
+	_dmmp_alloc_null_check(ctx, dmmp_mp->alias, rc, out);
+
+	_json_obj_get_value(ctx, j_obj_map, ar_pgs, "path_groups",
+			    json_type_array, json_object_get_array, rc, out);
+	ar_pgs_len = array_list_length(ar_pgs);
+	if (ar_pgs_len < 0) {
+		rc = DMMP_ERR_BUG;
+		_error(ctx, "BUG: Got negative length for ar_pgs");
+		goto out;
+	}
+	else if (ar_pgs_len == 0)
+		goto out;
+	else
+		dmmp_mp->dmmp_pg_count = ar_pgs_len & UINT32_MAX;
+
+	dmmp_mp->dmmp_pgs = (struct dmmp_path_group **)
+		malloc(sizeof(struct dmmp_path_group *) *
+		       dmmp_mp->dmmp_pg_count);
+	_dmmp_alloc_null_check(ctx, dmmp_mp->dmmp_pgs, rc, out);
+	for (; i < dmmp_mp->dmmp_pg_count; ++i)
+		dmmp_mp->dmmp_pgs[i] = NULL;
+
+	for (i = 0; i < dmmp_mp->dmmp_pg_count; ++i) {
+		dmmp_pg = _dmmp_path_group_new();
+		_dmmp_alloc_null_check(ctx, dmmp_pg, rc, out);
+		dmmp_mp->dmmp_pgs[i] = dmmp_pg;
+		_good(_dmmp_path_group_update(ctx, dmmp_pg,
+					      array_list_get_idx(ar_pgs, i)),
+		      rc, out);
+	}
+
+	_debug(ctx, "Got mpath wwid: '%s', alias: '%s'", dmmp_mp->wwid,
+	       dmmp_mp->alias);
+
+out:
+	if (rc != DMMP_OK)
+		_dmmp_mpath_free(dmmp_mp);
+	return rc;
+}
+
+void _dmmp_mpath_free(struct dmmp_mpath *dmmp_mp)
+{
+	if (dmmp_mp == NULL)
+		return ;
+
+	free((char *) dmmp_mp->alias);
+	free((char *) dmmp_mp->wwid);
+
+	if (dmmp_mp->dmmp_pgs != NULL)
+		_dmmp_path_group_array_free(dmmp_mp->dmmp_pgs,
+					    dmmp_mp->dmmp_pg_count);
+
+	free(dmmp_mp);
+}
+
+void dmmp_path_group_array_get(struct dmmp_mpath *dmmp_mp,
+			       struct dmmp_path_group ***dmmp_pgs,
+			       uint32_t *dmmp_pg_count)
+{
+	assert(dmmp_mp != NULL);
+	assert(dmmp_pgs != NULL);
+	assert(dmmp_pg_count != NULL);
+
+	*dmmp_pgs = dmmp_mp->dmmp_pgs;
+	*dmmp_pg_count = dmmp_mp->dmmp_pg_count;
+}
diff --git a/libdmmp/libdmmp_path.c b/libdmmp/libdmmp_path.c
new file mode 100644
index 0000000..47a2162
--- /dev/null
+++ b/libdmmp/libdmmp_path.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+#include <stdlib.h>
+#include <inttypes.h>
+#include <string.h>
+#include <assert.h>
+#include <json.h>
+
+#include "libdmmp/libdmmp.h"
+#include "libdmmp_private.h"
+
+#define _DMMP_SHOW_PS_INDEX_BLK_NAME	0
+#define _DMMP_SHOW_PS_INDEX_SATAUS	1
+#define _DMMP_SHOW_PS_INDEX_WWID	2
+#define _DMMP_SHOW_PS_INDEX_PGID	3
+
+struct dmmp_path {
+	char *blk_name;
+	uint32_t status;
+};
+
+static const struct _num_str_conv _DMMP_PATH_STATUS_CONV[] = {
+	{DMMP_PATH_STATUS_UNKNOWN, "undef"},
+	{DMMP_PATH_STATUS_UP, "ready"},
+	{DMMP_PATH_STATUS_DOWN, "faulty"},
+	{DMMP_PATH_STATUS_SHAKY, "shaky"},
+	{DMMP_PATH_STATUS_GHOST, "ghost"},
+	{DMMP_PATH_STATUS_PENDING, "i/o pending"},
+	{DMMP_PATH_STATUS_TIMEOUT, "i/o timeout"},
+	{DMMP_PATH_STATUS_DELAYED, "delayed"},
+};
+
+_dmmp_str_func_gen(dmmp_path_status_str, uint32_t, path_status,
+		   _DMMP_PATH_STATUS_CONV);
+_dmmp_str_conv_func_gen(_dmmp_path_status_str_conv, ctx, path_status_str,
+			uint32_t, DMMP_PATH_STATUS_UNKNOWN,
+			_DMMP_PATH_STATUS_CONV);
+
+_dmmp_getter_func_gen(dmmp_path_blk_name_get, struct dmmp_path, dmmp_p,
+		      blk_name, const char *);
+_dmmp_getter_func_gen(dmmp_path_status_get, struct dmmp_path, dmmp_p,
+		      status, uint32_t);
+
+struct dmmp_path *_dmmp_path_new(void)
+{
+	struct dmmp_path *dmmp_p = NULL;
+
+	dmmp_p = (struct dmmp_path *) malloc(sizeof(struct dmmp_path));
+
+	if (dmmp_p != NULL) {
+		dmmp_p->blk_name = NULL;
+		dmmp_p->status = DMMP_PATH_STATUS_UNKNOWN;
+	}
+	return dmmp_p;
+}
+
+int _dmmp_path_update(struct dmmp_context *ctx, struct dmmp_path *dmmp_p,
+		      json_object *j_obj_p)
+{
+	int rc = DMMP_OK;
+	const char *blk_name = NULL;
+	const char *status_str = NULL;
+
+	assert(ctx != NULL);
+	assert(dmmp_p != NULL);
+	assert(j_obj_p != NULL);
+
+	_json_obj_get_value(ctx, j_obj_p, blk_name, "dev",
+			    json_type_string, json_object_get_string, rc, out);
+	_json_obj_get_value(ctx, j_obj_p, status_str, "chk_st",
+			    json_type_string, json_object_get_string, rc, out);
+
+	_dmmp_null_or_empty_str_check(ctx, blk_name, rc, out);
+	_dmmp_null_or_empty_str_check(ctx, status_str, rc, out);
+
+	dmmp_p->blk_name = strdup(blk_name);
+	_dmmp_alloc_null_check(ctx, dmmp_p->blk_name, rc, out);
+
+	dmmp_p->status = _dmmp_path_status_str_conv(ctx, status_str);
+
+	_debug(ctx, "Got path blk_name: '%s'", dmmp_p->blk_name);
+	_debug(ctx, "Got path status: %s(%" PRIu32 ")",
+	       dmmp_path_status_str(dmmp_p->status), dmmp_p->status);
+
+out:
+	if (rc != DMMP_OK)
+		_dmmp_path_free(dmmp_p);
+	return rc;
+}
+
+void _dmmp_path_free(struct dmmp_path *dmmp_p)
+{
+	if (dmmp_p == NULL)
+		return;
+	free(dmmp_p->blk_name);
+	free(dmmp_p);
+}
diff --git a/libdmmp/libdmmp_pg.c b/libdmmp/libdmmp_pg.c
new file mode 100644
index 0000000..5149161
--- /dev/null
+++ b/libdmmp/libdmmp_pg.c
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <assert.h>
+#include <json.h>
+
+#include "libdmmp/libdmmp.h"
+#include "libdmmp_private.h"
+
+#define _DMMP_SHOW_PGS_CMD "show groups raw format %w|%g|%p|%t|%s"
+#define _DMMP_SHOW_PG_INDEX_WWID	0
+#define _DMMP_SHOW_PG_INDEX_PG_ID	1
+#define _DMMP_SHOW_PG_INDEX_PRI		2
+#define _DMMP_SHOW_PG_INDEX_STATUS	3
+#define _DMMP_SHOW_PG_INDEX_SELECTOR	4
+
+struct dmmp_path_group {
+	uint32_t id;
+	/* ^ pgindex of struct path, will be used for path group switch */
+	uint32_t status;
+	uint32_t priority;
+	char *selector;
+	uint32_t dmmp_p_count;
+	struct dmmp_path **dmmp_ps;
+};
+
+static const struct _num_str_conv _DMMP_PATH_GROUP_STATUS_CONV[] = {
+	{DMMP_PATH_GROUP_STATUS_UNKNOWN, "undef"},
+	{DMMP_PATH_GROUP_STATUS_ACTIVE, "active"},
+	{DMMP_PATH_GROUP_STATUS_DISABLED, "disabled"},
+	{DMMP_PATH_GROUP_STATUS_ENABLED, "enabled"},
+};
+
+_dmmp_str_func_gen(dmmp_path_group_status_str, uint32_t, pg_status,
+		   _DMMP_PATH_GROUP_STATUS_CONV);
+_dmmp_str_conv_func_gen(_dmmp_path_group_status_str_conv, ctx, pg_status_str,
+			uint32_t, DMMP_PATH_GROUP_STATUS_UNKNOWN,
+			_DMMP_PATH_GROUP_STATUS_CONV);
+
+_dmmp_getter_func_gen(dmmp_path_group_id_get, struct dmmp_path_group, dmmp_pg,
+		      id, uint32_t);
+_dmmp_getter_func_gen(dmmp_path_group_status_get, struct dmmp_path_group,
+		      dmmp_pg, status, uint32_t);
+_dmmp_getter_func_gen(dmmp_path_group_priority_get, struct dmmp_path_group,
+		      dmmp_pg, priority, uint32_t);
+_dmmp_getter_func_gen(dmmp_path_group_selector_get, struct dmmp_path_group,
+		      dmmp_pg, selector, const char *);
+_dmmp_array_free_func_gen(_dmmp_path_group_array_free, struct dmmp_path_group,
+			  _dmmp_path_group_free);
+
+
+struct dmmp_path_group *_dmmp_path_group_new(void)
+{
+	struct dmmp_path_group *dmmp_pg = NULL;
+
+	dmmp_pg = (struct dmmp_path_group *)
+		malloc(sizeof(struct dmmp_path_group));
+
+	if (dmmp_pg != NULL) {
+		dmmp_pg->id = _DMMP_PATH_GROUP_ID_UNKNOWN;
+		dmmp_pg->status = DMMP_PATH_GROUP_STATUS_UNKNOWN;
+		dmmp_pg->priority = 0;
+		dmmp_pg->selector = NULL;
+		dmmp_pg->dmmp_p_count = 0;
+		dmmp_pg->dmmp_ps = NULL;
+	}
+	return dmmp_pg;
+}
+int _dmmp_path_group_update(struct dmmp_context *ctx,
+			    struct dmmp_path_group *dmmp_pg,
+			    json_object *j_obj_pg)
+{
+	int rc = DMMP_OK;
+	uint32_t id = 0;
+	int priority_int = -1 ;
+	const char *status_str = NULL;
+	const char *selector = NULL;
+	struct array_list *ar_ps = NULL;
+	int ar_ps_len = -1;
+	uint32_t i = 0;
+	struct dmmp_path *dmmp_p = NULL;
+
+	assert(ctx != NULL);
+	assert(dmmp_pg != NULL);
+	assert(j_obj_pg != NULL);
+
+	_json_obj_get_value(ctx, j_obj_pg, status_str, "dm_st",
+			    json_type_string, json_object_get_string, rc, out);
+
+	_json_obj_get_value(ctx, j_obj_pg, selector, "selector",
+			    json_type_string, json_object_get_string, rc, out);
+
+	_json_obj_get_value(ctx, j_obj_pg, priority_int, "pri",
+			    json_type_int, json_object_get_int, rc, out);
+
+	_json_obj_get_value(ctx, j_obj_pg, id, "group",
+			    json_type_int, json_object_get_int, rc, out);
+
+	dmmp_pg->priority = (priority_int <= 0) ? 0 : priority_int & UINT32_MAX;
+
+	_dmmp_null_or_empty_str_check(ctx, status_str, rc, out);
+	_dmmp_null_or_empty_str_check(ctx, selector, rc, out);
+
+	dmmp_pg->selector = strdup(selector);
+	_dmmp_alloc_null_check(ctx, dmmp_pg->selector, rc, out);
+
+	dmmp_pg->id = id;
+
+	if (dmmp_pg->id == _DMMP_PATH_GROUP_ID_UNKNOWN) {
+		rc = DMMP_ERR_BUG;
+		_error(ctx, "BUG: Got unknown(%d) path group ID",
+		       _DMMP_PATH_GROUP_ID_UNKNOWN);
+		goto out;
+	}
+
+	dmmp_pg->status = _dmmp_path_group_status_str_conv(ctx, status_str);
+
+	_json_obj_get_value(ctx, j_obj_pg, ar_ps, "paths",
+			    json_type_array, json_object_get_array, rc, out);
+
+	ar_ps_len = array_list_length(ar_ps);
+	if (ar_ps_len < 0) {
+		rc = DMMP_ERR_BUG;
+		_error(ctx, "BUG: Got negative length for ar_ps");
+		goto out;
+	}
+	else if (ar_ps_len == 0)
+		goto out;
+	else
+		dmmp_pg->dmmp_p_count = ar_ps_len & UINT32_MAX;
+
+	dmmp_pg->dmmp_ps = (struct dmmp_path **)
+		malloc(sizeof(struct dmmp_path *) * dmmp_pg->dmmp_p_count);
+	_dmmp_alloc_null_check(ctx, dmmp_pg->dmmp_ps, rc, out);
+	for (; i < dmmp_pg->dmmp_p_count; ++i)
+		dmmp_pg->dmmp_ps[i] = NULL;
+
+	for (i = 0; i < dmmp_pg->dmmp_p_count; ++i) {
+		dmmp_p = _dmmp_path_new();
+		_dmmp_alloc_null_check(ctx, dmmp_p, rc, out);
+		dmmp_pg->dmmp_ps[i] = dmmp_p;
+		_good(_dmmp_path_update(ctx, dmmp_p,
+					array_list_get_idx(ar_ps, i)),
+		      rc, out);
+	}
+
+	_debug(ctx, "Got path group id: %" PRIu32 "", dmmp_pg->id);
+	_debug(ctx, "Got path group priority: %" PRIu32 "", dmmp_pg->priority);
+	_debug(ctx, "Got path group status: %s(%" PRIu32 ")",
+	       dmmp_path_group_status_str(dmmp_pg->status), dmmp_pg->status);
+	_debug(ctx, "Got path group selector: '%s'", dmmp_pg->selector);
+
+out:
+	if (rc != DMMP_OK)
+		_dmmp_path_group_free(dmmp_pg);
+	return rc;
+}
+
+void _dmmp_path_group_free(struct dmmp_path_group *dmmp_pg)
+{
+	uint32_t i = 0;
+
+	if (dmmp_pg == NULL)
+		return;
+
+	free((char *) dmmp_pg->selector);
+
+	if (dmmp_pg->dmmp_ps != NULL) {
+		for (i = 0; i < dmmp_pg->dmmp_p_count; ++i) {
+			_dmmp_path_free(dmmp_pg->dmmp_ps[i]);
+		}
+		free(dmmp_pg->dmmp_ps);
+	}
+	free(dmmp_pg);
+}
+
+void dmmp_path_array_get(struct dmmp_path_group *mp_pg,
+			 struct dmmp_path ***mp_paths,
+			 uint32_t *dmmp_p_count)
+{
+	assert(mp_pg != NULL);
+	assert(mp_paths != NULL);
+	assert(dmmp_p_count != NULL);
+
+	*mp_paths = mp_pg->dmmp_ps;
+	*dmmp_p_count = mp_pg->dmmp_p_count;
+}
diff --git a/libdmmp/libdmmp_private.h b/libdmmp/libdmmp_private.h
new file mode 100644
index 0000000..e23c995
--- /dev/null
+++ b/libdmmp/libdmmp_private.h
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2015 - 2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ *         Todd Gill <tgill@redhat.com>
+ */
+
+#ifndef _LIB_DMMP_PRIVATE_H_
+#define _LIB_DMMP_PRIVATE_H_
+
+/*
+ * Notes:
+ *	Internal/Private functions does not check input argument but using
+ *	assert() to abort if NULL pointer found in argument.
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <assert.h>
+#include <json.h>
+
+#include "libdmmp/libdmmp.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define _good(rc, rc_val, out) \
+	do { \
+		rc_val = rc; \
+		if (rc_val != DMMP_OK) \
+			goto out; \
+	} while(0)
+
+#define _DMMP_PATH_GROUP_ID_UNKNOWN	0
+
+DMMP_DLL_LOCAL struct _num_str_conv {
+	const uint32_t value;
+	const char *str;
+};
+
+#define _dmmp_str_func_gen(func_name, var_type, var, conv_array) \
+const char *func_name(var_type var) { \
+	size_t i = 0; \
+	uint32_t tmp_var = var & UINT32_MAX; \
+	/* In the whole libdmmp, we don't have negative value */ \
+	for (; i < sizeof(conv_array)/sizeof(conv_array[0]); ++i) { \
+		if ((conv_array[i].value) == tmp_var) \
+			return conv_array[i].str; \
+	} \
+	return "Invalid argument"; \
+}
+
+#define _dmmp_str_conv_func_gen(func_name, ctx, var_name, out_type, \
+				unknown_value, conv_array) \
+static out_type func_name(struct dmmp_context *ctx, const char *var_name) { \
+	size_t i = 0; \
+	for (; i < sizeof(conv_array)/sizeof(conv_array[0]); ++i) { \
+		if (strcmp(conv_array[i].str, var_name) == 0) \
+			return conv_array[i].value; \
+	} \
+	_warn(ctx, "Got unknown " #var_name ": '%s'", var_name); \
+	return unknown_value; \
+}
+
+#define _json_obj_get_value(ctx, j_obj, out_value, key, value_type, \
+			    value_func, rc, out) \
+do { \
+	json_type j_type = json_type_null; \
+	json_object *j_obj_tmp = NULL; \
+	if (json_object_object_get_ex(j_obj, key, &j_obj_tmp) != TRUE) { \
+		_error(ctx, "Invalid JSON output from multipathd IPC: " \
+		       "key '%s' not found", key); \
+		rc = DMMP_ERR_IPC_ERROR; \
+		goto out; \
+	} \
+	if (j_obj_tmp == NULL) { \
+		_error(ctx, "BUG: Got NULL j_obj_tmp from " \
+		       "json_object_object_get_ex() while it return TRUE"); \
+		rc = DMMP_ERR_BUG; \
+		goto out; \
+	} \
+	j_type = json_object_get_type(j_obj_tmp); \
+	if (j_type != value_type) { \
+		_error(ctx, "Invalid value type for key'%s' of JSON output " \
+		       "from multipathd IPC. Should be %s(%d), " \
+		       "but got %s(%d)", key, json_type_to_name(value_type), \
+		       value_type, json_type_to_name(j_type), j_type); \
+		rc = DMMP_ERR_IPC_ERROR; \
+		goto out; \
+	} \
+	out_value = value_func(j_obj_tmp); \
+} while(0);
+
+DMMP_DLL_LOCAL int _dmmp_ipc_exec(struct dmmp_context *ctx, const char *cmd,
+				  char **output);
+
+DMMP_DLL_LOCAL struct dmmp_mpath *_dmmp_mpath_new(void);
+DMMP_DLL_LOCAL struct dmmp_path_group *_dmmp_path_group_new(void);
+DMMP_DLL_LOCAL struct dmmp_path *_dmmp_path_new(void);
+
+DMMP_DLL_LOCAL int _dmmp_mpath_update(struct dmmp_context *ctx,
+				      struct dmmp_mpath *dmmp_mp,
+				      json_object *j_obj_map);
+DMMP_DLL_LOCAL int _dmmp_path_group_update(struct dmmp_context *ctx,
+					   struct dmmp_path_group *dmmp_pg,
+					   json_object *j_obj_pg);
+DMMP_DLL_LOCAL int _dmmp_path_update(struct dmmp_context *ctx,
+				     struct dmmp_path *dmmp_p,
+				     json_object *j_obj_p);
+
+DMMP_DLL_LOCAL void _dmmp_mpath_free(struct dmmp_mpath *dmmp_mp);
+DMMP_DLL_LOCAL void _dmmp_path_group_free(struct dmmp_path_group *dmmp_pg);
+DMMP_DLL_LOCAL void _dmmp_path_group_array_free
+	(struct dmmp_path_group **dmmp_pgs, uint32_t dmmp_pg_count);
+DMMP_DLL_LOCAL void _dmmp_path_free(struct dmmp_path *dmmp_p);
+DMMP_DLL_LOCAL void _dmmp_log(struct dmmp_context *ctx, int priority,
+			      const char *file, int line,
+			      const char *func_name,
+			      const char *format, ...);
+DMMP_DLL_LOCAL void _dmmp_log_err_str(struct dmmp_context *ctx, int rc);
+
+DMMP_DLL_LOCAL void _dmmp_log_stderr(struct dmmp_context *ctx, int priority,
+				     const char *file, int line,
+				     const char *func_name, const char *format,
+				     va_list args);
+
+
+#define _dmmp_log_cond(ctx, prio, arg...) \
+	do { \
+		if (dmmp_context_log_priority_get(ctx) >= prio) \
+			_dmmp_log(ctx, prio, __FILE__, __LINE__, __FUNCTION__, \
+				  ## arg); \
+	} while (0)
+
+#define _debug(ctx, arg...) \
+	_dmmp_log_cond(ctx, DMMP_LOG_PRIORITY_DEBUG, ## arg)
+#define _info(ctx, arg...) \
+	_dmmp_log_cond(ctx, DMMP_LOG_PRIORITY_INFO, ## arg)
+#define _warn(ctx, arg...) \
+	_dmmp_log_cond(ctx, DMMP_LOG_PRIORITY_WARNING, ## arg)
+#define _error(ctx, arg...) \
+	_dmmp_log_cond(ctx, DMMP_LOG_PRIORITY_ERROR, ## arg)
+
+/*
+ * Check pointer returned by malloc() or strdup(), if NULL, set
+ * rc as DMMP_ERR_NO_MEMORY, report error and goto goto_out.
+ */
+#define _dmmp_alloc_null_check(ctx, ptr, rc, goto_out) \
+	do { \
+		if (ptr == NULL) { \
+			rc = DMMP_ERR_NO_MEMORY; \
+			_error(ctx, dmmp_strerror(rc)); \
+			goto goto_out; \
+		} \
+	} while(0)
+
+#define _dmmp_null_or_empty_str_check(ctx, var, rc, goto_out) \
+	do { \
+		if (var == NULL) { \
+			rc = DMMP_ERR_BUG; \
+			_error(ctx, "BUG: Got NULL " #var); \
+			goto goto_out; \
+		} \
+		if (strlen(var) == 0) { \
+			rc = DMMP_ERR_BUG; \
+			_error(ctx, "BUG: Got empty " #var); \
+			goto goto_out; \
+		} \
+	} while(0)
+
+#define _dmmp_getter_func_gen(func_name, struct_name, struct_data, \
+			      prop_name, prop_type) \
+	prop_type func_name(struct_name *struct_data) \
+	{ \
+		assert(struct_data != NULL); \
+		return struct_data->prop_name; \
+	}
+
+#define _dmmp_array_free_func_gen(func_name, struct_name, struct_free_func) \
+	void func_name(struct_name **ptr_array, uint32_t ptr_count) \
+	{ \
+		uint32_t i = 0; \
+		if (ptr_array == NULL) \
+			return; \
+		for (; i < ptr_count; ++i) \
+			struct_free_func(ptr_array[i]); \
+		free(ptr_array); \
+	}
+
+#ifdef __cplusplus
+} /* End of extern "C" */
+#endif
+
+#endif /* End of _LIB_DMMP_PRIVATE_H_ */
diff --git a/libdmmp/test/Makefile b/libdmmp/test/Makefile
new file mode 100644
index 0000000..68f1af3
--- /dev/null
+++ b/libdmmp/test/Makefile
@@ -0,0 +1,30 @@
+# Makefile
+#
+# Copyright (C) 2015-2016 Gris Ge <fge@redhat.com>
+#
+include ../../Makefile.inc
+
+_libdmmpdir=../$(libdmmpdir)
+_mpathcmddir=../$(mpathcmddir)
+
+TEST_EXEC = libdmmp_test
+SPD_TEST_EXEC = libdmmp_speed_test
+CFLAGS += -I$(_libdmmpdir)
+LDFLAGS += -L$(_libdmmpdir) -ldmmp
+
+all: $(TEST_EXEC) $(SPD_TEST_EXEC)
+
+check: $(TEST_EXEC) $(SPD_TEST_EXEC)
+	sudo env LD_LIBRARY_PATH=$(_libdmmpdir):$(_mpathcmddir) \
+		valgrind --quiet --leak-check=full \
+		--show-reachable=no --show-possibly-lost=no \
+		--trace-children=yes --error-exitcode=1 \
+		./$(TEST_EXEC)
+	$(MAKE) speed_test
+
+speed_test: $(SPD_TEST_EXEC)
+	sudo env LD_LIBRARY_PATH=$(_libdmmpdir):$(_mpathcmddir) \
+		time -p ./$(SPD_TEST_EXEC)
+
+clean:
+	rm -f $(TEST_EXEC)
diff --git a/libdmmp/test/libdmmp_speed_test.c b/libdmmp/test/libdmmp_speed_test.c
new file mode 100644
index 0000000..372cd39
--- /dev/null
+++ b/libdmmp/test/libdmmp_speed_test.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2015-2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <string.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include <libdmmp/libdmmp.h>
+
+int main(int argc, char *argv[])
+{
+	struct dmmp_context *ctx = NULL;
+	struct dmmp_mpath **dmmp_mps = NULL;
+	uint32_t dmmp_mp_count = 0;
+	int rc = EXIT_SUCCESS;
+
+	ctx = dmmp_context_new();
+	dmmp_context_log_priority_set(ctx, DMMP_LOG_PRIORITY_WARNING);
+
+	if (dmmp_mpath_array_get(ctx, &dmmp_mps, &dmmp_mp_count) != 0) {
+		printf("FAILED\n");
+		rc = EXIT_FAILURE;
+	} else {
+		printf("Got %" PRIu32 " mpath\n", dmmp_mp_count);
+		dmmp_mpath_array_free(dmmp_mps, dmmp_mp_count);
+	}
+	dmmp_context_free(ctx);
+	exit(rc);
+}
diff --git a/libdmmp/test/libdmmp_test.c b/libdmmp/test/libdmmp_test.c
new file mode 100644
index 0000000..3b10034
--- /dev/null
+++ b/libdmmp/test/libdmmp_test.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2015-2016 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Gris Ge <fge@redhat.com>
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <string.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include <libdmmp/libdmmp.h>
+
+#define FAIL(rc, out, ...) \
+	do { \
+		rc = EXIT_FAILURE; \
+		fprintf(stderr, "FAIL: "__VA_ARGS__ ); \
+		goto out; \
+	} while(0)
+#define PASS(...) fprintf(stdout, "PASS: "__VA_ARGS__ );
+#define FILE_NAME_SIZE 256
+#define TMO 10000	/* Forcing timeout to 10 seconds */
+
+int test_paths(struct dmmp_path_group *mp_pg)
+{
+	struct dmmp_path **mp_ps = NULL;
+	uint32_t mp_p_count = 0;
+	uint32_t i = 0;
+	const char *blk_name = NULL;
+	int rc = EXIT_SUCCESS;
+
+	dmmp_path_array_get(mp_pg, &mp_ps, &mp_p_count);
+	if (mp_p_count == 0)
+		FAIL(rc, out, "dmmp_path_array_get(): Got no path\n");
+	for (i = 0; i < mp_p_count; ++i) {
+		blk_name = dmmp_path_blk_name_get(mp_ps[i]);
+		if (blk_name == NULL)
+			FAIL(rc, out, "dmmp_path_blk_name_get(): Got NULL\n");
+		PASS("dmmp_path_blk_name_get(): %s\n", blk_name);
+		PASS("dmmp_path_status_get(): %" PRIu32 " -- %s\n",
+		     dmmp_path_status_get(mp_ps[i]),
+		     dmmp_path_status_str(dmmp_path_status_get(mp_ps[i])));
+	}
+out:
+	return rc;
+}
+
+int test_path_groups(struct dmmp_mpath *dmmp_mp)
+{
+	struct dmmp_path_group **dmmp_pgs = NULL;
+	uint32_t dmmp_pg_count = 0;
+	uint32_t i = 0;
+	int rc = EXIT_SUCCESS;
+
+	dmmp_path_group_array_get(dmmp_mp, &dmmp_pgs, &dmmp_pg_count);
+	if ((dmmp_pg_count == 0) && (dmmp_pgs != NULL))
+		FAIL(rc, out, "dmmp_path_group_array_get(): mp_pgs is not NULL "
+		     "but mp_pg_count is 0\n");
+	if ((dmmp_pg_count != 0) && (dmmp_pgs == NULL))
+		FAIL(rc, out, "dmmp_path_group_array_get(): mp_pgs is NULL "
+		     "but mp_pg_count is not 0\n");
+	if (dmmp_pg_count == 0)
+		FAIL(rc, out, "dmmp_path_group_array_get(): "
+		     "Got 0 path group\n");
+
+	PASS("dmmp_path_group_array_get(): Got %" PRIu32 " path groups\n",
+	     dmmp_pg_count);
+
+	for (i = 0; i < dmmp_pg_count; ++i) {
+		PASS("dmmp_path_group_id_get(): %" PRIu32 "\n",
+		     dmmp_path_group_id_get(dmmp_pgs[i]));
+		PASS("dmmp_path_group_priority_get(): %" PRIu32 "\n",
+		     dmmp_path_group_priority_get(dmmp_pgs[i]));
+		PASS("dmmp_path_group_status_get(): %" PRIu32 " -- %s\n",
+		     dmmp_path_group_status_get(dmmp_pgs[i]),
+		     dmmp_path_group_status_str
+			(dmmp_path_group_status_get(dmmp_pgs[i])));
+		PASS("dmmp_path_group_selector_get(): %s\n",
+		     dmmp_path_group_selector_get(dmmp_pgs[i]));
+		rc = test_paths(dmmp_pgs[i]);
+		if (rc != 0)
+			goto out;
+	}
+out:
+	return rc;
+}
+
+int main(int argc, char *argv[])
+{
+	struct dmmp_context *ctx = NULL;
+	struct dmmp_mpath **dmmp_mps = NULL;
+	uint32_t dmmp_mp_count = 0;
+	const char *name = NULL;
+	const char *wwid = NULL;
+	uint32_t i = 0;
+	int rc = EXIT_SUCCESS;
+
+	ctx = dmmp_context_new();
+	dmmp_context_log_priority_set(ctx, DMMP_LOG_PRIORITY_DEBUG);
+	dmmp_context_userdata_set(ctx, ctx);
+	dmmp_context_userdata_set(ctx, NULL);
+	dmmp_context_timeout_set(ctx, TMO);
+	if (dmmp_context_timeout_get(ctx) != TMO)
+		FAIL(rc, out, "dmmp_context_timeout_set(): Failed to set "
+		     "timeout to %u", TMO);
+
+	if (dmmp_mpath_array_get(ctx, &dmmp_mps, &dmmp_mp_count) != 0)
+		FAIL(rc, out, "dmmp_mpath_array_get(): rc != 0\n");
+	if (dmmp_mp_count == 0)
+		FAIL(rc, out, "dmmp_mpath_array_get(): "
+		     "Got no multipath devices\n");
+	PASS("dmmp_mpath_array_get(): Got %" PRIu32 " mpath\n", dmmp_mp_count);
+	for (i = 0; i < dmmp_mp_count; ++i) {
+		name = dmmp_mpath_name_get(dmmp_mps[i]);
+		wwid = dmmp_mpath_wwid_get(dmmp_mps[i]);
+		if ((name == NULL) ||(wwid == NULL))
+			FAIL(rc, out,
+			     "dmmp_mpath_array_get(): Got NULL name or wwid");
+		PASS("dmmp_mpath_array_get(): Got mpath: %s %s\n", name, wwid);
+		rc = test_path_groups(dmmp_mps[i]);
+		if (rc != 0)
+			goto out;
+	}
+	dmmp_mpath_array_free(dmmp_mps, dmmp_mp_count);
+out:
+	dmmp_context_free(ctx);
+	exit(rc);
+}
