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	diff --git a/include/crm/common/xml_internal.h b/include/crm/common/xml_internal.h
	index 09742a6cde..55b6983037 100644
	--- a/include/crm/common/xml_internal.h
	+++ b/include/crm/common/xml_internal.h
	@@ -1,424 +1,431 @@
	/*
	* Copyright 2017-2023 the Pacemaker project contributors
	*
	* The version control history for this file may have further details.
	*
	* This source code is licensed under the GNU Lesser General Public License
	* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	*/

	#ifndef PCMK__XML_INTERNAL__H
	# define PCMK__XML_INTERNAL__H

	/*
	* Internal-only wrappers for and extensions to libxml2 (libxslt)
	*/

	# include <stdlib.h>
	# include <stdio.h>
	# include <string.h>

	# include <crm/crm.h> /* transitively imports qblog.h */
	# include <crm/common/output_internal.h>


	/*!
	* \brief Base for directing lib{xml2,xslt} log into standard libqb backend
	*
	* This macro implements the core of what can be needed for directing
	* libxml2 or libxslt error messaging into standard, preconfigured
	* libqb-backed log stream.
	*
	* It's a bit unfortunate that libxml2 (and more sparsely, also libxslt)
	* emits a single message by chunks (location is emitted separatedly from
	* the message itself), so we have to take the effort to combine these
	* chunks back to single message. Whether to do this or not is driven
	* with \p dechunk toggle.
	*
	* The form of a macro was chosen for implicit deriving of __FILE__, etc.
	* and also because static dechunking buffer should be differentiated per
	* library (here we assume different functions referring to this macro
	* will not ever be using both at once), preferably also per-library
	* context of use to avoid clashes altogether.
	*
	* Note that we cannot use qb_logt, because callsite data have to be known
	* at the moment of compilation, which it is not always the case -- xml_log
	* (and unfortunately there's no clear explanation of the fail to compile).
	*
	* Also note that there's no explicit guard against said libraries producing
	* never-newline-terminated chunks (which would just keep consuming memory),
	* as it's quite improbable. Termination of the program in between the
	* same-message chunks will raise a flag with valgrind and the likes, though.
	*
	* And lastly, regarding how dechunking combines with other non-message
	* parameters -- for \p priority, most important running specification
	* wins (possibly elevated to LOG_ERR in case of nonconformance with the
	* newline-termination "protocol"), \p dechunk is expected to always be
	* on once it was at the start, and the rest (\p postemit and \p prefix)
	* are picked directly from the last chunk entry finalizing the message
	* (also reasonable to always have it the same with all related entries).
	*
	* \param[in] priority Syslog priority for the message to be logged
	* \param[in] dechunk Whether to dechunk new-line terminated message
	* \param[in] postemit Code to be executed once message is sent out
	* \param[in] prefix How to prefix the message or NULL for raw passing
	* \param[in] fmt Format string as with printf-like functions
	* \param[in] ap Variable argument list to supplement \p fmt format string
	*/
	#define PCMK__XML_LOG_BASE(priority, dechunk, postemit, prefix, fmt, ap) \
	do { \
	if (!(dechunk) && (prefix) == NULL) { /* quick pass */ \
	qb_log_from_external_source_va(__func__, __FILE__, (fmt), \
	(priority), __LINE__, 0, (ap)); \
	(void) (postemit); \
	} else { \
	int CXLB_len = 0; \
	char *CXLB_buf = NULL; \
	static int CXLB_buffer_len = 0; \
	static char *CXLB_buffer = NULL; \
	static uint8_t CXLB_priority = 0; \
	\
	CXLB_len = vasprintf(&CXLB_buf, (fmt), (ap)); \
	\
	if (CXLB_len <= 0 \|\| CXLB_buf[CXLB_len - 1] == '\n' \|\| !(dechunk)) { \
	if (CXLB_len < 0) { \
	CXLB_buf = (char ) "LOG CORRUPTION HAZARD"; /we don't modify*/\
	CXLB_priority = QB_MIN(CXLB_priority, LOG_ERR); \
	} else if (CXLB_len > 0 /* && (dechunk) */ \
	&& CXLB_buf[CXLB_len - 1] == '\n') { \
	CXLB_buf[CXLB_len - 1] = '\0'; \
	} \
	if (CXLB_buffer) { \
	qb_log_from_external_source(__func__, __FILE__, "%s%s%s", \
	CXLB_priority, __LINE__, 0, \
	(prefix) != NULL ? (prefix) : "", \
	CXLB_buffer, CXLB_buf); \
	free(CXLB_buffer); \
	} else { \
	qb_log_from_external_source(__func__, __FILE__, "%s%s", \
	(priority), __LINE__, 0, \
	(prefix) != NULL ? (prefix) : "", \
	CXLB_buf); \
	} \
	if (CXLB_len < 0) { \
	CXLB_buf = NULL; /* restore temporary override */ \
	} \
	CXLB_buffer = NULL; \
	CXLB_buffer_len = 0; \
	(void) (postemit); \
	\
	} else if (CXLB_buffer == NULL) { \
	CXLB_buffer_len = CXLB_len; \
	CXLB_buffer = CXLB_buf; \
	CXLB_buf = NULL; \
	CXLB_priority = (priority); /* remember as a running severest */ \
	\
	} else { \
	CXLB_buffer = realloc(CXLB_buffer, 1 + CXLB_buffer_len + CXLB_len); \
	memcpy(CXLB_buffer + CXLB_buffer_len, CXLB_buf, CXLB_len); \
	CXLB_buffer_len += CXLB_len; \
	CXLB_buffer[CXLB_buffer_len] = '\0'; \
	CXLB_priority = QB_MIN(CXLB_priority, (priority)); /* severest? */ \
	} \
	free(CXLB_buf); \
	} \
	} while (0)

	/*
	* \enum pcmk__xml_fmt_options
	* \brief Bit flags to control format in XML logs and dumps
	*/
	enum pcmk__xml_fmt_options {
	//! Exclude certain XML attributes (for calculating digests)
	pcmk__xml_fmt_filtered = (1 << 0),

	//! Include indentation and newlines
	pcmk__xml_fmt_pretty = (1 << 1),

	//! Include full XML subtree (with any text), using libxml serialization
	pcmk__xml_fmt_full = (1 << 2),

	//! Include the opening tag of an XML element, and include XML comments
	pcmk__xml_fmt_open = (1 << 3),

	//! Include the children of an XML element
	pcmk__xml_fmt_children = (1 << 4),

	//! Include the closing tag of an XML element
	pcmk__xml_fmt_close = (1 << 5),

	// @COMPAT Remove when log_data_element() is removed
	//! Include XML text nodes
	pcmk__xml_fmt_text = (1 << 6),

	// @COMPAT Remove when v1 patchsets are removed
	//! Log a created XML subtree
	pcmk__xml_fmt_diff_plus = (1 << 7),

	// @COMPAT Remove when v1 patchsets are removed
	//! Log a removed XML subtree
	pcmk__xml_fmt_diff_minus = (1 << 8),

	// @COMPAT Remove when v1 patchsets are removed
	//! Log a minimal version of an XML diff (only showing the changes)
	pcmk__xml_fmt_diff_short = (1 << 9),
	};

	int pcmk__xml_show(pcmk__output_t out, const char prefix, const xmlNode *data,
	int depth, uint32_t options);
	int pcmk__xml_show_changes(pcmk__output_t out, const xmlNode xml);

	/* XML search strings for guest, remote and pacemaker_remote nodes */

	/* search string to find CIB resources entries for cluster nodes */
	#define PCMK__XP_MEMBER_NODE_CONFIG \
	"//" XML_TAG_CIB "/" XML_CIB_TAG_CONFIGURATION "/" XML_CIB_TAG_NODES \
	"/" XML_CIB_TAG_NODE "[not(@type) or @type='member']"

	/* search string to find CIB resources entries for guest nodes */
	#define PCMK__XP_GUEST_NODE_CONFIG \
	"//" XML_TAG_CIB "//" XML_CIB_TAG_CONFIGURATION "//" XML_CIB_TAG_RESOURCE \
	"//" XML_TAG_META_SETS "//" XML_CIB_TAG_NVPAIR \
	"[@name='" XML_RSC_ATTR_REMOTE_NODE "']"

	/* search string to find CIB resources entries for remote nodes */
	#define PCMK__XP_REMOTE_NODE_CONFIG \
	"//" XML_TAG_CIB "//" XML_CIB_TAG_CONFIGURATION "//" XML_CIB_TAG_RESOURCE \
	"[@type='remote'][@provider='pacemaker']"

	/* search string to find CIB node status entries for pacemaker_remote nodes */
	#define PCMK__XP_REMOTE_NODE_STATUS \
	"//" XML_TAG_CIB "//" XML_CIB_TAG_STATUS "//" XML_CIB_TAG_STATE \
	"[@" XML_NODE_IS_REMOTE "='true']"
	/*!
	* \internal
	* \brief Serialize XML (using libxml) into provided descriptor
	*
	* \param[in] fd File descriptor to (piece-wise) write to
	* \param[in] cur XML subtree to proceed
	*
	* \return a standard Pacemaker return code
	*/
	int pcmk__xml2fd(int fd, xmlNode *cur);

	enum pcmk__xml_artefact_ns {
	pcmk__xml_artefact_ns_legacy_rng = 1,
	pcmk__xml_artefact_ns_legacy_xslt,
	pcmk__xml_artefact_ns_base_rng,
	pcmk__xml_artefact_ns_base_xslt,
	};

	void pcmk__strip_xml_text(xmlNode *xml);
	const char pcmk__xe_add_last_written(xmlNode xe);

	xmlNode pcmk__xe_match(const xmlNode parent, const char *node_name,
	const char attr_n, const char attr_v);

	void pcmk__xe_remove_matching_attrs(xmlNode *element,
	bool (match)(xmlAttrPtr, void ),
	void *user_data);

	GString pcmk__element_xpath(const xmlNode xml);

	/*!
	* \internal
	* \brief Get the root directory to scan XML artefacts of given kind for
	*
	* \param[in] ns governs the hierarchy nesting against the inherent root dir
	*
	* \return root directory to scan XML artefacts of given kind for
	*/
	char *
	pcmk__xml_artefact_root(enum pcmk__xml_artefact_ns ns);

	/*!
	* \internal
	* \brief Get the fully unwrapped path to particular XML artifact (RNG/XSLT)
	*
	* \param[in] ns denotes path forming details (parent dir, suffix)
	* \param[in] filespec symbolic file specification to be combined with
	* #artefact_ns to form the final path
	* \return unwrapped path to particular XML artifact (RNG/XSLT)
	*/
	char *pcmk__xml_artefact_path(enum pcmk__xml_artefact_ns ns,
	const char *filespec);

	/*!
	* \internal
	* \brief Return first non-text child node of an XML node
	*
	* \param[in] parent XML node to check
	*
	* \return First non-text child node of \p parent (or NULL if none)
	*/
	static inline xmlNode *
	pcmk__xml_first_child(const xmlNode *parent)
	{
	xmlNode *child = (parent? parent->children : NULL);

	while (child && (child->type == XML_TEXT_NODE)) {
	child = child->next;
	}
	return child;
	}

	/*!
	* \internal
	* \brief Return next non-text sibling node of an XML node
	*
	* \param[in] child XML node to check
	*
	* \return Next non-text sibling of \p child (or NULL if none)
	*/
	static inline xmlNode *
	pcmk__xml_next(const xmlNode *child)
	{
	xmlNode *next = (child? child->next : NULL);

	while (next && (next->type == XML_TEXT_NODE)) {
	next = next->next;
	}
	return next;
	}

	/*!
	* \internal
	* \brief Return first non-text child element of an XML node
	*
	* \param[in] parent XML node to check
	*
	* \return First child element of \p parent (or NULL if none)
	*/
	static inline xmlNode *
	pcmk__xe_first_child(const xmlNode *parent)
	{
	xmlNode *child = (parent? parent->children : NULL);

	while (child && (child->type != XML_ELEMENT_NODE)) {
	child = child->next;
	}
	return child;
	}

	/*!
	* \internal
	* \brief Return next non-text sibling element of an XML element
	*
	* \param[in] child XML element to check
	*
	* \return Next sibling element of \p child (or NULL if none)
	*/
	static inline xmlNode *
	pcmk__xe_next(const xmlNode *child)
	{
	xmlNode *next = child? child->next : NULL;

	while (next && (next->type != XML_ELEMENT_NODE)) {
	next = next->next;
	}
	return next;
	}

	/*!
	* \internal
	* \brief Like pcmk__xe_set_props, but takes a va_list instead of
	* arguments directly.
	*
	* \param[in,out] node XML to add attributes to
	* \param[in] pairs NULL-terminated list of name/value pairs to add
	*/
	void
	pcmk__xe_set_propv(xmlNodePtr node, va_list pairs);

	/*!
	* \internal
	* \brief Add a NULL-terminated list of name/value pairs to the given
	* XML node as properties.
	*
	* \param[in,out] node XML node to add properties to
	* \param[in] ... NULL-terminated list of name/value pairs
	*
	* \note A NULL name terminates the arguments; a NULL value will be skipped.
	*/
	void
	pcmk__xe_set_props(xmlNodePtr node, ...)
	G_GNUC_NULL_TERMINATED;

	/*!
	* \internal
	* \brief Get first attribute of an XML element
	*
	* \param[in] xe XML element to check
	*
	* \return First attribute of \p xe (or NULL if \p xe is NULL or has none)
	*/
	static inline xmlAttr *
	pcmk__xe_first_attr(const xmlNode *xe)
	{
	return (xe == NULL)? NULL : xe->properties;
	}

	/*!
	* \internal
	* \brief Extract the ID attribute from an XML element
	*
	* \param[in] xpath String to search
	* \param[in] node Node to get the ID for
	*
	* \return ID attribute of \p node in xpath string \p xpath
	*/
	char *
	pcmk__xpath_node_id(const char xpath, const char node);

	/* internal XML-related utilities */

	enum xml_private_flags {
	pcmk__xf_none = 0x0000,
	pcmk__xf_dirty = 0x0001,
	pcmk__xf_deleted = 0x0002,
	pcmk__xf_created = 0x0004,
	pcmk__xf_modified = 0x0008,

	pcmk__xf_tracking = 0x0010,
	pcmk__xf_processed = 0x0020,
	pcmk__xf_skip = 0x0040,
	pcmk__xf_moved = 0x0080,

	pcmk__xf_acl_enabled = 0x0100,
	pcmk__xf_acl_read = 0x0200,
	pcmk__xf_acl_write = 0x0400,
	pcmk__xf_acl_deny = 0x0800,

	pcmk__xf_acl_create = 0x1000,
	pcmk__xf_acl_denied = 0x2000,
	pcmk__xf_lazy = 0x4000,
	};

	void pcmk__set_xml_doc_flag(xmlNode *xml, enum xml_private_flags flag);

	/*!
	* \internal
	* \brief Iterate over child elements of \p xml
	*
	* This function iterates over the children of \p xml, performing the
	* callback function \p handler on each node. If the callback returns
	* a value other than pcmk_rc_ok, the iteration stops and the value is
	* returned. It is therefore possible that not all children will be
	* visited.
	*
	* \param[in,out] xml The starting XML node. Can be NULL.
	* \param[in] child_element_name The name that the node must match in order
	* for \p handler to be run. If NULL, all
	* child elements will match.
	* \param[in] handler The callback function.
	* \param[in,out] userdata User data to pass to the callback function.
	* Can be NULL.
	*
	* \return Standard Pacemaker return code
	*/
	int
	pcmk__xe_foreach_child(xmlNode xml, const char child_element_name,
	int (handler)(xmlNode xml, void *userdata),
	void *userdata);

	+static inline const char *
	+pcmk__xml_attr_value(const xmlAttr *attr)
	+{
	+ return ((attr == NULL) \|\| (attr->children == NULL))? NULL
	+ : (const char *) attr->children->content;
	+}
	+
	#endif // PCMK__XML_INTERNAL__H
	diff --git a/lib/common/Makefile.am b/lib/common/Makefile.am
	index ef729d4419..542a2e95ba 100644
	--- a/lib/common/Makefile.am
	+++ b/lib/common/Makefile.am
	@@ -1,124 +1,125 @@
	#
	# Copyright 2004-2023 the Pacemaker project contributors
	#
	# The version control history for this file may have further details.
	#
	# This source code is licensed under the GNU General Public License version 2
	# or later (GPLv2+) WITHOUT ANY WARRANTY.
	#
	include $(top_srcdir)/mk/common.mk

	AM_CPPFLAGS += -I$(top_builddir)/lib/gnu -I$(top_srcdir)/lib/gnu

	## libraries
	lib_LTLIBRARIES = libcrmcommon.la
	check_LTLIBRARIES = libcrmcommon_test.la

	# Disable -Wcast-qual if used, because we do some hacky casting,
	# and because libxml2 has some signatures that should be const but aren't
	# for backward compatibility reasons.

	# s390 needs -fPIC
	# s390-suse-linux/bin/ld: .libs/ipc.o: relocation R_390_PC32DBL against `__stack_chk_fail@@GLIBC_2.4' can not be used when making a shared object; recompile with -fPIC

	CFLAGS = $(CFLAGS_COPY:-Wcast-qual=) -fPIC

	# Without "." here, check-recursive will run through the subdirectories first
	# and then run "make check" here. This will fail, because there's things in
	# the subdirectories that need check_LTLIBRARIES built first. Adding "." here
	# changes the order so the subdirectories are processed afterwards.
	SUBDIRS = . tests

	noinst_HEADERS = crmcommon_private.h mock_private.h

	libcrmcommon_la_LDFLAGS = -version-info 45:0:11

	libcrmcommon_la_CFLAGS = $(CFLAGS_HARDENED_LIB)
	libcrmcommon_la_LDFLAGS += $(LDFLAGS_HARDENED_LIB)

	libcrmcommon_la_LIBADD = @LIBADD_DL@ $(top_builddir)/lib/gnu/libgnu.la

	# If configured with --with-profiling or --with-coverage, BUILD_PROFILING will
	# be set and -fno-builtin will be added to the CFLAGS. However, libcrmcommon
	# uses the fabs() function which is normally supplied by gcc as one of its
	# builtins. Therefore we need to explicitly link against libm here or the
	# tests won't link.
	if BUILD_PROFILING
	libcrmcommon_la_LIBADD += -lm
	endif

	# Use += rather than backlashed continuation lines for parsing by bumplibs
	libcrmcommon_la_SOURCES =
	libcrmcommon_la_SOURCES += acl.c
	libcrmcommon_la_SOURCES += agents.c
	libcrmcommon_la_SOURCES += alerts.c
	libcrmcommon_la_SOURCES += attrs.c
	libcrmcommon_la_SOURCES += cib.c
	if BUILD_CIBSECRETS
	libcrmcommon_la_SOURCES += cib_secrets.c
	endif
	libcrmcommon_la_SOURCES += cmdline.c
	libcrmcommon_la_SOURCES += digest.c
	libcrmcommon_la_SOURCES += health.c
	libcrmcommon_la_SOURCES += io.c
	libcrmcommon_la_SOURCES += ipc_attrd.c
	libcrmcommon_la_SOURCES += ipc_client.c
	libcrmcommon_la_SOURCES += ipc_common.c
	libcrmcommon_la_SOURCES += ipc_controld.c
	libcrmcommon_la_SOURCES += ipc_pacemakerd.c
	libcrmcommon_la_SOURCES += ipc_schedulerd.c
	libcrmcommon_la_SOURCES += ipc_server.c
	libcrmcommon_la_SOURCES += iso8601.c
	libcrmcommon_la_SOURCES += lists.c
	libcrmcommon_la_SOURCES += logging.c
	libcrmcommon_la_SOURCES += mainloop.c
	libcrmcommon_la_SOURCES += messages.c
	libcrmcommon_la_SOURCES += nodes.c
	libcrmcommon_la_SOURCES += nvpair.c
	libcrmcommon_la_SOURCES += operations.c
	libcrmcommon_la_SOURCES += options.c
	libcrmcommon_la_SOURCES += output.c
	libcrmcommon_la_SOURCES += output_html.c
	libcrmcommon_la_SOURCES += output_log.c
	libcrmcommon_la_SOURCES += output_none.c
	libcrmcommon_la_SOURCES += output_text.c
	libcrmcommon_la_SOURCES += output_xml.c
	libcrmcommon_la_SOURCES += patchset.c
	libcrmcommon_la_SOURCES += patchset_display.c
	libcrmcommon_la_SOURCES += pid.c
	libcrmcommon_la_SOURCES += procfs.c
	libcrmcommon_la_SOURCES += remote.c
	libcrmcommon_la_SOURCES += results.c
	libcrmcommon_la_SOURCES += schemas.c
	libcrmcommon_la_SOURCES += scores.c
	libcrmcommon_la_SOURCES += strings.c
	libcrmcommon_la_SOURCES += utils.c
	libcrmcommon_la_SOURCES += watchdog.c
	libcrmcommon_la_SOURCES += xml.c
	+libcrmcommon_la_SOURCES += xml_attr.c
	libcrmcommon_la_SOURCES += xml_display.c
	libcrmcommon_la_SOURCES += xpath.c

	#
	# libcrmcommon_test is used only with unit tests, so we can mock system calls.
	# See mock.c for details.
	#

	include $(top_srcdir)/mk/tap.mk

	libcrmcommon_test_la_SOURCES = $(libcrmcommon_la_SOURCES)
	libcrmcommon_test_la_SOURCES += mock.c
	libcrmcommon_test_la_LDFLAGS = $(libcrmcommon_la_LDFLAGS) -rpath $(libdir) $(LDFLAGS_WRAP)
	# If GCC emits a builtin function in place of something we've mocked up, that will
	# get used instead of the mocked version which leads to unexpected test results. So
	# disable all builtins. Older versions of GCC (at least, on RHEL7) will still emit
	# replacement code for strdup (and possibly other functions) unless -fno-inline is
	# also added.
	libcrmcommon_test_la_CFLAGS = $(libcrmcommon_la_CFLAGS) -DPCMK__UNIT_TESTING -fno-builtin -fno-inline
	# If -fno-builtin is used, -lm also needs to be added. See the comment at
	# BUILD_PROFILING above.
	libcrmcommon_test_la_LIBADD = $(libcrmcommon_la_LIBADD) -lcmocka -lm

	nodist_libcrmcommon_test_la_SOURCES = $(nodist_libcrmcommon_la_SOURCES)

	clean-generic:
	rm -f .log .debug .xml ~
	diff --git a/lib/common/crmcommon_private.h b/lib/common/crmcommon_private.h
	index 7faccb6dac..dbf924f2bb 100644
	--- a/lib/common/crmcommon_private.h
	+++ b/lib/common/crmcommon_private.h
	@@ -1,325 +1,327 @@
	/*
	* Copyright 2018-2023 the Pacemaker project contributors
	*
	* The version control history for this file may have further details.
	*
	* This source code is licensed under the GNU Lesser General Public License
	* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	*/

	#ifndef CRMCOMMON_PRIVATE__H
	# define CRMCOMMON_PRIVATE__H

	/* This header is for the sole use of libcrmcommon, so that functions can be
	* declared with G_GNUC_INTERNAL for efficiency.
	*/

	#include <stdint.h> // uint8_t, uint32_t
	#include <stdbool.h> // bool
	#include <sys/types.h> // size_t
	#include <glib.h> // GList
	#include <libxml/tree.h> // xmlNode, xmlAttr
	#include <qb/qbipcc.h> // struct qb_ipc_response_header

	// Decent chunk size for processing large amounts of data
	#define PCMK__BUFFER_SIZE 4096

	#if defined(PCMK__UNIT_TESTING)
	#undef G_GNUC_INTERNAL
	#define G_GNUC_INTERNAL
	#endif

	/* When deleting portions of an XML tree, we keep a record so we can know later
	* (e.g. when checking differences) that something was deleted.
	*/
	typedef struct pcmk__deleted_xml_s {
	char *path;
	int position;
	} pcmk__deleted_xml_t;

	typedef struct xml_node_private_s {
	long check;
	uint32_t flags;
	} xml_node_private_t;

	typedef struct xml_doc_private_s {
	long check;
	uint32_t flags;
	char *user;
	GList *acls;
	GList *deleted_objs; // List of pcmk__deleted_xml_t
	} xml_doc_private_t;

	#define pcmk__set_xml_flags(xml_priv, flags_to_set) do { \
	(xml_priv)->flags = pcmk__set_flags_as(__func__, __LINE__, \
	LOG_NEVER, "XML", "XML node", (xml_priv)->flags, \
	(flags_to_set), #flags_to_set); \
	} while (0)

	#define pcmk__clear_xml_flags(xml_priv, flags_to_clear) do { \
	(xml_priv)->flags = pcmk__clear_flags_as(__func__, __LINE__, \
	LOG_NEVER, "XML", "XML node", (xml_priv)->flags, \
	(flags_to_clear), #flags_to_clear); \
	} while (0)

	G_GNUC_INTERNAL
	void pcmk__xml2text(xmlNodePtr data, uint32_t options, GString *buffer,
	int depth);

	G_GNUC_INTERNAL
	bool pcmk__tracking_xml_changes(xmlNode *xml, bool lazy);

	G_GNUC_INTERNAL
	void pcmk__mark_xml_created(xmlNode *xml);

	G_GNUC_INTERNAL
	int pcmk__xml_position(const xmlNode *xml,
	enum xml_private_flags ignore_if_set);

	G_GNUC_INTERNAL
	xmlNode pcmk__xml_match(const xmlNode haystack, const xmlNode *needle,
	bool exact);

	G_GNUC_INTERNAL
	void pcmk__xml_update(xmlNode parent, xmlNode target, xmlNode *update,
	bool as_diff);

	G_GNUC_INTERNAL
	xmlNode pcmk__xc_match(const xmlNode root, const xmlNode *search_comment,
	bool exact);

	G_GNUC_INTERNAL
	void pcmk__xc_update(xmlNode parent, xmlNode target, xmlNode *update);

	G_GNUC_INTERNAL
	void pcmk__free_acls(GList *acls);

	G_GNUC_INTERNAL
	void pcmk__unpack_acl(xmlNode source, xmlNode target, const char *user);

	G_GNUC_INTERNAL
	bool pcmk__is_user_in_group(const char user, const char group);

	G_GNUC_INTERNAL
	void pcmk__apply_acl(xmlNode *xml);

	G_GNUC_INTERNAL
	void pcmk__apply_creation_acl(xmlNode *xml, bool check_top);

	G_GNUC_INTERNAL
	void pcmk__mark_xml_attr_dirty(xmlAttr *a);

	G_GNUC_INTERNAL
	bool pcmk__xa_filterable(const char *name);

	G_GNUC_INTERNAL
	void pcmk__log_xmllib_err(void ctx, const char fmt, ...)
	G_GNUC_PRINTF(2, 3);

	-static inline const char *
	-pcmk__xml_attr_value(const xmlAttr *attr)
	-{
	- return ((attr == NULL) \|\| (attr->children == NULL))? NULL
	- : (const char *) attr->children->content;
	-}
	+G_GNUC_INTERNAL
	+void pcmk__mark_xml_node_dirty(xmlNode *xml);
	+
	+G_GNUC_INTERNAL
	+bool pcmk__marked_as_deleted(xmlAttrPtr a, void *user_data);
	+
	+G_GNUC_INTERNAL
	+void pcmk__dump_xml_attr(const xmlAttr attr, GString buffer);

	/*
	* IPC
	*/

	#define PCMK__IPC_VERSION 1

	#define PCMK__CONTROLD_API_MAJOR "1"
	#define PCMK__CONTROLD_API_MINOR "0"

	// IPC behavior that varies by daemon
	typedef struct pcmk__ipc_methods_s {
	/*!
	* \internal
	* \brief Allocate any private data needed by daemon IPC
	*
	* \param[in,out] api IPC API connection
	*
	* \return Standard Pacemaker return code
	*/
	int (new_data)(pcmk_ipc_api_t api);

	/*!
	* \internal
	* \brief Free any private data used by daemon IPC
	*
	* \param[in,out] api_data Data allocated by new_data() method
	*/
	void (free_data)(void api_data);

	/*!
	* \internal
	* \brief Perform daemon-specific handling after successful connection
	*
	* Some daemons require clients to register before sending any other
	* commands. The controller requires a CRM_OP_HELLO (with no reply), and
	* the CIB manager, executor, and fencer require a CRM_OP_REGISTER (with a
	* reply). Ideally this would be consistent across all daemons, but for now
	* this allows each to do its own authorization.
	*
	* \param[in,out] api IPC API connection
	*
	* \return Standard Pacemaker return code
	*/
	int (post_connect)(pcmk_ipc_api_t api);

	/*!
	* \internal
	* \brief Check whether an IPC request results in a reply
	*
	* \param[in,out] api IPC API connection
	* \param[in,out] request IPC request XML
	*
	* \return true if request would result in an IPC reply, false otherwise
	*/
	bool (reply_expected)(pcmk_ipc_api_t api, xmlNode *request);

	/*!
	* \internal
	* \brief Perform daemon-specific handling of an IPC message
	*
	* \param[in,out] api IPC API connection
	* \param[in,out] msg Message read from IPC connection
	*
	* \return true if more IPC reply messages should be expected
	*/
	bool (dispatch)(pcmk_ipc_api_t api, xmlNode *msg);

	/*!
	* \internal
	* \brief Perform daemon-specific handling of an IPC disconnect
	*
	* \param[in,out] api IPC API connection
	*/
	void (post_disconnect)(pcmk_ipc_api_t api);
	} pcmk__ipc_methods_t;

	// Implementation of pcmk_ipc_api_t
	struct pcmk_ipc_api_s {
	enum pcmk_ipc_server server; // Daemon this IPC API instance is for
	enum pcmk_ipc_dispatch dispatch_type; // How replies should be dispatched
	size_t ipc_size_max; // maximum IPC buffer size
	crm_ipc_t *ipc; // IPC connection
	mainloop_io_t *mainloop_io; // If using mainloop, I/O source for IPC
	bool free_on_disconnect; // Whether disconnect should free object
	pcmk_ipc_callback_t cb; // Caller-registered callback (if any)
	void *user_data; // Caller-registered data (if any)
	void *api_data; // For daemon-specific use
	pcmk__ipc_methods_t *cmds; // Behavior that varies by daemon
	};

	typedef struct pcmk__ipc_header_s {
	struct qb_ipc_response_header qb;
	uint32_t size_uncompressed;
	uint32_t size_compressed;
	uint32_t flags;
	uint8_t version;
	} pcmk__ipc_header_t;

	G_GNUC_INTERNAL
	int pcmk__send_ipc_request(pcmk_ipc_api_t api, xmlNode request);

	G_GNUC_INTERNAL
	void pcmk__call_ipc_callback(pcmk_ipc_api_t *api,
	enum pcmk_ipc_event event_type,
	crm_exit_t status, void *event_data);

	G_GNUC_INTERNAL
	unsigned int pcmk__ipc_buffer_size(unsigned int max);

	G_GNUC_INTERNAL
	bool pcmk__valid_ipc_header(const pcmk__ipc_header_t *header);

	G_GNUC_INTERNAL
	pcmk__ipc_methods_t *pcmk__attrd_api_methods(void);

	G_GNUC_INTERNAL
	pcmk__ipc_methods_t *pcmk__controld_api_methods(void);

	G_GNUC_INTERNAL
	pcmk__ipc_methods_t *pcmk__pacemakerd_api_methods(void);

	G_GNUC_INTERNAL
	pcmk__ipc_methods_t *pcmk__schedulerd_api_methods(void);


	/*
	* Logging
	*/

	//! XML is newly created
	#define PCMK__XML_PREFIX_CREATED "++"

	//! XML has been deleted
	#define PCMK__XML_PREFIX_DELETED "--"

	//! XML has been modified
	#define PCMK__XML_PREFIX_MODIFIED "+ "

	//! XML has been moved
	#define PCMK__XML_PREFIX_MOVED "+~"

	/*!
	* \brief Check the authenticity of the IPC socket peer process
	*
	* If everything goes well, peer's authenticity is verified by the means
	* of comparing against provided referential UID and GID (either satisfies),
	* and the result of this check can be deduced from the return value.
	* As an exception, detected UID of 0 ("root") satisfies arbitrary
	* provided referential daemon's credentials.
	*
	* \param[in] qb_ipc libqb client connection if available
	* \param[in] sock IPC related, connected Unix socket to check peer of
	* \param[in] refuid referential UID to check against
	* \param[in] refgid referential GID to check against
	* \param[out] gotpid to optionally store obtained PID of the peer
	* (not available on FreeBSD, special value of 1
	* used instead, and the caller is required to
	* special case this value respectively)
	* \param[out] gotuid to optionally store obtained UID of the peer
	* \param[out] gotgid to optionally store obtained GID of the peer
	*
	* \return Standard Pacemaker return code
	* ie: 0 if it the connection is authentic
	* pcmk_rc_ipc_unauthorized if the connection is not authentic,
	* standard errors.
	*
	* \note While this function is tolerant on what constitutes authorized
	* IPC daemon process (its effective user matches UID=0 or \p refuid,
	* or at least its group matches \p refgid), either or both (in case
	* of UID=0) mismatches on the expected credentials of such peer
	* process \e shall be investigated at the caller when value of 1
	* gets returned there, since higher-than-expected privileges in
	* respect to the expected/intended credentials possibly violate
	* the least privilege principle and may pose an additional risk
	* (i.e. such accidental inconsistency shall be eventually fixed).
	*/
	int pcmk__crm_ipc_is_authentic_process(qb_ipcc_connection_t *qb_ipc, int sock,
	uid_t refuid, gid_t refgid,
	pid_t gotpid, uid_t gotuid,
	gid_t *gotgid);


	/*
	* Output
	*/
	G_GNUC_INTERNAL
	int pcmk__bare_output_new(pcmk__output_t *out, const char fmt_name,
	const char filename, char *argv);

	G_GNUC_INTERNAL
	void pcmk__register_patchset_messages(pcmk__output_t *out);


	/*
	* Utils
	*/
	#define PCMK__PW_BUFFER_LEN 500


	#endif // CRMCOMMON_PRIVATE__H
	diff --git a/lib/common/xml.c b/lib/common/xml.c
	index 23b33528e8..e653d734d2 100644
	--- a/lib/common/xml.c
	+++ b/lib/common/xml.c
	@@ -1,2775 +1,2720 @@
	/*
	* Copyright 2004-2023 the Pacemaker project contributors
	*
	* The version control history for this file may have further details.
	*
	* This source code is licensed under the GNU Lesser General Public License
	* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	*/

	#include <crm_internal.h>

	#include <stdio.h>
	#include <sys/types.h>
	#include <unistd.h>
	#include <time.h>
	#include <string.h>
	#include <stdlib.h>
	#include <stdarg.h>
	#include <bzlib.h>

	#include <libxml/parser.h>
	#include <libxml/tree.h>
	#include <libxml/xmlIO.h> /* xmlAllocOutputBuffer */

	#include <crm/crm.h>
	#include <crm/msg_xml.h>
	#include <crm/common/xml.h>
	#include <crm/common/xml_internal.h> // PCMK__XML_LOG_BASE, etc.
	#include "crmcommon_private.h"

	// Define this as 1 in development to get insanely verbose trace messages
	#ifndef XML_PARSER_DEBUG
	#define XML_PARSER_DEBUG 0
	#endif

	/* @TODO XML_PARSE_RECOVER allows some XML errors to be silently worked around
	* by libxml2, which is potentially ambiguous and dangerous. We should drop it
	* when we can break backward compatibility with configurations that might be
	* relying on it (i.e. pacemaker 3.0.0).
	*
	* It might be a good idea to have a transitional period where we first try
	* parsing without XML_PARSE_RECOVER, and if that fails, try parsing again with
	* it, logging a warning if it succeeds.
	*/
	#define PCMK__XML_PARSE_OPTS (XML_PARSE_NOBLANKS \| XML_PARSE_RECOVER)

	bool
	pcmk__tracking_xml_changes(xmlNode *xml, bool lazy)
	{
	if(xml == NULL \|\| xml->doc == NULL \|\| xml->doc->_private == NULL) {
	return FALSE;
	} else if (!pcmk_is_set(((xml_doc_private_t *)xml->doc->_private)->flags,
	pcmk__xf_tracking)) {
	return FALSE;
	} else if (lazy && !pcmk_is_set(((xml_doc_private_t *)xml->doc->_private)->flags,
	pcmk__xf_lazy)) {
	return FALSE;
	}
	return TRUE;
	}

	static inline void
	set_parent_flag(xmlNode *xml, long flag)
	{
	for(; xml; xml = xml->parent) {
	xml_node_private_t *nodepriv = xml->_private;

	if (nodepriv == NULL) {
	/* During calls to xmlDocCopyNode(), _private will be unset for parent nodes */
	} else {
	pcmk__set_xml_flags(nodepriv, flag);
	}
	}
	}

	void
	pcmk__set_xml_doc_flag(xmlNode *xml, enum xml_private_flags flag)
	{
	if(xml && xml->doc && xml->doc->_private){
	/* During calls to xmlDocCopyNode(), xml->doc may be unset */
	xml_doc_private_t *docpriv = xml->doc->_private;

	pcmk__set_xml_flags(docpriv, flag);
	}
	}

	// Mark document, element, and all element's parents as changed
	-static inline void
	-mark_xml_node_dirty(xmlNode *xml)
	+void
	+pcmk__mark_xml_node_dirty(xmlNode *xml)
	{
	pcmk__set_xml_doc_flag(xml, pcmk__xf_dirty);
	set_parent_flag(xml, pcmk__xf_dirty);
	}

	// Clear flags on XML node and its children
	static void
	reset_xml_node_flags(xmlNode *xml)
	{
	xmlNode *cIter = NULL;
	xml_node_private_t *nodepriv = xml->_private;

	if (nodepriv) {
	nodepriv->flags = 0;
	}

	for (cIter = pcmk__xml_first_child(xml); cIter != NULL;
	cIter = pcmk__xml_next(cIter)) {
	reset_xml_node_flags(cIter);
	}
	}

	// Set xpf_created flag on XML node and any children
	void
	pcmk__mark_xml_created(xmlNode *xml)
	{
	xmlNode *cIter = NULL;
	xml_node_private_t *nodepriv = xml->_private;

	if (nodepriv && pcmk__tracking_xml_changes(xml, FALSE)) {
	if (!pcmk_is_set(nodepriv->flags, pcmk__xf_created)) {
	pcmk__set_xml_flags(nodepriv, pcmk__xf_created);
	- mark_xml_node_dirty(xml);
	+ pcmk__mark_xml_node_dirty(xml);
	}
	for (cIter = pcmk__xml_first_child(xml); cIter != NULL;
	cIter = pcmk__xml_next(cIter)) {
	pcmk__mark_xml_created(cIter);
	}
	}
	}

	-void
	-pcmk__mark_xml_attr_dirty(xmlAttr *a)
	-{
	- xmlNode *parent = a->parent;
	- xml_node_private_t *nodepriv = a->_private;
	-
	- pcmk__set_xml_flags(nodepriv, pcmk__xf_dirty\|pcmk__xf_modified);
	- pcmk__clear_xml_flags(nodepriv, pcmk__xf_deleted);
	- mark_xml_node_dirty(parent);
	-}
	-
	#define XML_DOC_PRIVATE_MAGIC 0x81726354UL
	#define XML_NODE_PRIVATE_MAGIC 0x54637281UL

	// Free an XML object previously marked as deleted
	static void
	free_deleted_object(void *data)
	{
	if(data) {
	pcmk__deleted_xml_t *deleted_obj = data;

	free(deleted_obj->path);
	free(deleted_obj);
	}
	}

	// Free and NULL user, ACLs, and deleted objects in an XML node's private data
	static void
	reset_xml_private_data(xml_doc_private_t *docpriv)
	{
	if (docpriv != NULL) {
	CRM_ASSERT(docpriv->check == XML_DOC_PRIVATE_MAGIC);

	free(docpriv->user);
	docpriv->user = NULL;

	if (docpriv->acls != NULL) {
	pcmk__free_acls(docpriv->acls);
	docpriv->acls = NULL;
	}

	if(docpriv->deleted_objs) {
	g_list_free_full(docpriv->deleted_objs, free_deleted_object);
	docpriv->deleted_objs = NULL;
	}
	}
	}

	// Free all private data associated with an XML node
	static void
	free_private_data(xmlNode *node)
	{
	/* Note:

	This function frees private data assosciated with an XML node,
	unless the function is being called as a result of internal
	XSLT cleanup.

	That could happen through, for example, the following chain of
	function calls:

	xsltApplyStylesheetInternal
	-> xsltFreeTransformContext
	-> xsltFreeRVTs
	-> xmlFreeDoc

	And in that case, the node would fulfill three conditions:

	1. It would be a standalone document (i.e. it wouldn't be
	part of a document)
	2. It would have a space-prefixed name (for reference, please
	see xsltInternals.h: XSLT_MARK_RES_TREE_FRAG)
	3. It would carry its own payload in the _private field.

	We do not free data in this circumstance to avoid a failed
	assertion on the XML_*_PRIVATE_MAGIC later.

	*/
	if (node->name == NULL \|\| node->name[0] != ' ') {
	if (node->_private) {
	if (node->type == XML_DOCUMENT_NODE) {
	reset_xml_private_data(node->_private);
	} else {
	CRM_ASSERT(((xml_node_private_t *) node->_private)->check
	== XML_NODE_PRIVATE_MAGIC);
	/* nothing dynamically allocated nested */
	}
	free(node->_private);
	node->_private = NULL;
	}
	}
	}

	// Allocate and initialize private data for an XML node
	static void
	new_private_data(xmlNode *node)
	{
	switch (node->type) {
	case XML_DOCUMENT_NODE: {
	xml_doc_private_t *docpriv = NULL;
	docpriv = calloc(1, sizeof(xml_doc_private_t));
	CRM_ASSERT(docpriv != NULL);
	docpriv->check = XML_DOC_PRIVATE_MAGIC;
	/* Flags will be reset if necessary when tracking is enabled */
	pcmk__set_xml_flags(docpriv, pcmk__xf_dirty\|pcmk__xf_created);
	node->_private = docpriv;
	break;
	}
	case XML_ELEMENT_NODE:
	case XML_ATTRIBUTE_NODE:
	case XML_COMMENT_NODE: {
	xml_node_private_t *nodepriv = NULL;
	nodepriv = calloc(1, sizeof(xml_node_private_t));
	CRM_ASSERT(nodepriv != NULL);
	nodepriv->check = XML_NODE_PRIVATE_MAGIC;
	/* Flags will be reset if necessary when tracking is enabled */
	pcmk__set_xml_flags(nodepriv, pcmk__xf_dirty\|pcmk__xf_created);
	node->_private = nodepriv;
	if (pcmk__tracking_xml_changes(node, FALSE)) {
	/* XML_ELEMENT_NODE doesn't get picked up here, node->doc is
	* not hooked up at the point we are called
	*/
	- mark_xml_node_dirty(node);
	+ pcmk__mark_xml_node_dirty(node);
	}
	break;
	}
	case XML_TEXT_NODE:
	case XML_DTD_NODE:
	case XML_CDATA_SECTION_NODE:
	break;
	default:
	/* Ignore */
	crm_trace("Ignoring %p %d", node, node->type);
	CRM_LOG_ASSERT(node->type == XML_ELEMENT_NODE);
	break;
	}
	}

	void
	xml_track_changes(xmlNode * xml, const char user, xmlNode acl_source, bool enforce_acls)
	{
	xml_accept_changes(xml);
	crm_trace("Tracking changes%s to %p", enforce_acls?" with ACLs":"", xml);
	pcmk__set_xml_doc_flag(xml, pcmk__xf_tracking);
	if(enforce_acls) {
	if(acl_source == NULL) {
	acl_source = xml;
	}
	pcmk__set_xml_doc_flag(xml, pcmk__xf_acl_enabled);
	pcmk__unpack_acl(acl_source, xml, user);
	pcmk__apply_acl(xml);
	}
	}

	bool xml_tracking_changes(xmlNode * xml)
	{
	return (xml != NULL) && (xml->doc != NULL) && (xml->doc->_private != NULL)
	&& pcmk_is_set(((xml_doc_private_t *)(xml->doc->_private))->flags,
	pcmk__xf_tracking);
	}

	bool xml_document_dirty(xmlNode *xml)
	{
	return (xml != NULL) && (xml->doc != NULL) && (xml->doc->_private != NULL)
	&& pcmk_is_set(((xml_doc_private_t *)(xml->doc->_private))->flags,
	pcmk__xf_dirty);
	}

	/*!
	* \internal
	* \brief Return ordinal position of an XML node among its siblings
	*
	* \param[in] xml XML node to check
	* \param[in] ignore_if_set Don't count siblings with this flag set
	*
	* \return Ordinal position of \p xml (starting with 0)
	*/
	int
	pcmk__xml_position(const xmlNode *xml, enum xml_private_flags ignore_if_set)
	{
	int position = 0;

	for (const xmlNode *cIter = xml; cIter->prev; cIter = cIter->prev) {
	xml_node_private_t nodepriv = ((xmlNode)cIter->prev)->_private;

	if (!pcmk_is_set(nodepriv->flags, ignore_if_set)) {
	position++;
	}
	}

	return position;
	}

	-// This also clears attribute's flags if not marked as deleted
	-static bool
	-marked_as_deleted(xmlAttrPtr a, void *user_data)
	-{
	- xml_node_private_t *nodepriv = a->_private;
	-
	- if (pcmk_is_set(nodepriv->flags, pcmk__xf_deleted)) {
	- return true;
	- }
	- nodepriv->flags = pcmk__xf_none;
	- return false;
	-}
	-
	// Remove all attributes marked as deleted from an XML node
	static void
	accept_attr_deletions(xmlNode *xml)
	{
	// Clear XML node's flags
	((xml_node_private_t *) xml->_private)->flags = pcmk__xf_none;

	// Remove this XML node's attributes that were marked as deleted
	- pcmk__xe_remove_matching_attrs(xml, marked_as_deleted, NULL);
	+ pcmk__xe_remove_matching_attrs(xml, pcmk__marked_as_deleted, NULL);

	// Recursively do the same for this XML node's children
	for (xmlNodePtr cIter = pcmk__xml_first_child(xml); cIter != NULL;
	cIter = pcmk__xml_next(cIter)) {
	accept_attr_deletions(cIter);
	}
	}

	/*!
	* \internal
	* \brief Find first child XML node matching another given XML node
	*
	* \param[in] haystack XML whose children should be checked
	* \param[in] needle XML to match (comment content or element name and ID)
	* \param[in] exact If true and needle is a comment, position must match
	*/
	xmlNode *
	pcmk__xml_match(const xmlNode haystack, const xmlNode needle, bool exact)
	{
	CRM_CHECK(needle != NULL, return NULL);

	if (needle->type == XML_COMMENT_NODE) {
	return pcmk__xc_match(haystack, needle, exact);

	} else {
	const char *id = ID(needle);
	const char *attr = (id == NULL)? NULL : XML_ATTR_ID;

	return pcmk__xe_match(haystack, crm_element_name(needle), attr, id);
	}
	}

	void
	xml_accept_changes(xmlNode * xml)
	{
	xmlNode *top = NULL;
	xml_doc_private_t *docpriv = NULL;

	if(xml == NULL) {
	return;
	}

	crm_trace("Accepting changes to %p", xml);
	docpriv = xml->doc->_private;
	top = xmlDocGetRootElement(xml->doc);

	reset_xml_private_data(xml->doc->_private);

	if (!pcmk_is_set(docpriv->flags, pcmk__xf_dirty)) {
	docpriv->flags = pcmk__xf_none;
	return;
	}

	docpriv->flags = pcmk__xf_none;
	accept_attr_deletions(top);
	}

	xmlNode *
	find_xml_node(const xmlNode root, const char search_path, gboolean must_find)
	{
	xmlNode *a_child = NULL;
	const char *name = "NULL";

	if (root != NULL) {
	name = crm_element_name(root);
	}

	if (search_path == NULL) {
	crm_warn("Will never find <NULL>");
	return NULL;
	}

	for (a_child = pcmk__xml_first_child(root); a_child != NULL;
	a_child = pcmk__xml_next(a_child)) {
	if (strcmp((const char *)a_child->name, search_path) == 0) {
	/* crm_trace("returning node (%s).", crm_element_name(a_child)); */
	return a_child;
	}
	}

	if (must_find) {
	crm_warn("Could not find %s in %s.", search_path, name);
	} else if (root != NULL) {
	crm_trace("Could not find %s in %s.", search_path, name);
	} else {
	crm_trace("Could not find %s in <NULL>.", search_path);
	}

	return NULL;
	}

	#define attr_matches(c, n, v) pcmk__str_eq(crm_element_value((c), (n)), \
	(v), pcmk__str_none)

	/*!
	* \internal
	* \brief Find first XML child element matching given criteria
	*
	* \param[in] parent XML element to search
	* \param[in] node_name If not NULL, only match children of this type
	* \param[in] attr_n If not NULL, only match children with an attribute
	* of this name.
	* \param[in] attr_v If \p attr_n and this are not NULL, only match children
	* with an attribute named \p attr_n and this value
	*
	* \return Matching XML child element, or NULL if none found
	*/
	xmlNode *
	pcmk__xe_match(const xmlNode parent, const char node_name,
	const char attr_n, const char attr_v)
	{
	CRM_CHECK(parent != NULL, return NULL);
	CRM_CHECK(attr_v == NULL \|\| attr_n != NULL, return NULL);

	for (xmlNode *child = pcmk__xml_first_child(parent); child != NULL;
	child = pcmk__xml_next(child)) {
	if (pcmk__str_eq(node_name, (const char *) (child->name),
	pcmk__str_null_matches)
	&& ((attr_n == NULL) \|\|
	(attr_v == NULL && xmlHasProp(child, (pcmkXmlStr) attr_n)) \|\|
	(attr_v != NULL && attr_matches(child, attr_n, attr_v)))) {
	return child;
	}
	}
	crm_trace("XML child node <%s%s%s%s%s> not found in %s",
	(node_name? node_name : "(any)"),
	(attr_n? " " : ""),
	(attr_n? attr_n : ""),
	(attr_n? "=" : ""),
	(attr_n? attr_v : ""),
	crm_element_name(parent));
	return NULL;
	}

	void
	copy_in_properties(xmlNode target, const xmlNode src)
	{
	if (src == NULL) {
	crm_warn("No node to copy properties from");

	} else if (target == NULL) {
	crm_err("No node to copy properties into");

	} else {
	for (xmlAttrPtr a = pcmk__xe_first_attr(src); a != NULL; a = a->next) {
	const char p_name = (const char ) a->name;
	const char *p_value = pcmk__xml_attr_value(a);

	expand_plus_plus(target, p_name, p_value);
	if (xml_acl_denied(target)) {
	crm_trace("Cannot copy %s=%s to %s", p_name, p_value, target->name);
	return;
	}
	}
	}

	return;
	}

	/*!
	* \brief Parse integer assignment statements on this node and all its child
	* nodes
	*
	* \param[in,out] target Root XML node to be processed
	*
	* \note This function is recursive
	*/
	void
	fix_plus_plus_recursive(xmlNode *target)
	{
	/* TODO: Remove recursion and use xpath searches for value++ */
	xmlNode *child = NULL;

	for (xmlAttrPtr a = pcmk__xe_first_attr(target); a != NULL; a = a->next) {
	const char p_name = (const char ) a->name;
	const char *p_value = pcmk__xml_attr_value(a);

	expand_plus_plus(target, p_name, p_value);
	}
	for (child = pcmk__xml_first_child(target); child != NULL;
	child = pcmk__xml_next(child)) {
	fix_plus_plus_recursive(child);
	}
	}

	/*!
	* \brief Update current XML attribute value per parsed integer assignment
	statement
	*
	* \param[in,out] target an XML node, containing a XML attribute that is
	* initialized to some numeric value, to be processed
	* \param[in] name name of the XML attribute, e.g. X, whose value
	* should be updated
	* \param[in] value assignment statement, e.g. "X++" or
	* "X+=5", to be applied to the initialized value.
	*
	* \note The original XML attribute value is treated as 0 if non-numeric and
	* truncated to be an integer if decimal-point-containing.
	* \note The final XML attribute value is truncated to not exceed 1000000.
	* \note Undefined behavior if unexpected input.
	*/
	void
	expand_plus_plus(xmlNode * target, const char name, const char value)
	{
	int offset = 1;
	int name_len = 0;
	int int_value = 0;
	int value_len = 0;

	const char *old_value = NULL;

	if (target == NULL \|\| value == NULL \|\| name == NULL) {
	return;
	}

	old_value = crm_element_value(target, name);

	if (old_value == NULL) {
	/* if no previous value, set unexpanded */
	goto set_unexpanded;

	} else if (strstr(value, name) != value) {
	goto set_unexpanded;
	}

	name_len = strlen(name);
	value_len = strlen(value);
	if (value_len < (name_len + 2)
	\|\| value[name_len] != '+' \|\| (value[name_len + 1] != '+' && value[name_len + 1] != '=')) {
	goto set_unexpanded;
	}

	/* if we are expanding ourselves,
	* then no previous value was set and leave int_value as 0
	*/
	if (old_value != value) {
	int_value = char2score(old_value);
	}

	if (value[name_len + 1] != '+') {
	const char *offset_s = value + (name_len + 2);

	offset = char2score(offset_s);
	}
	int_value += offset;

	if (int_value > INFINITY) {
	int_value = (int)INFINITY;
	}

	crm_xml_add_int(target, name, int_value);
	return;

	set_unexpanded:
	if (old_value == value) {
	/* the old value is already set, nothing to do */
	return;
	}
	crm_xml_add(target, name, value);
	return;
	}

	/*!
	* \internal
	* \brief Remove an XML element's attributes that match some criteria
	*
	* \param[in,out] element XML element to modify
	* \param[in] match If not NULL, only remove attributes for which
	* this function returns true
	* \param[in,out] user_data Data to pass to \p match
	*/
	void
	pcmk__xe_remove_matching_attrs(xmlNode *element,
	bool (match)(xmlAttrPtr, void ),
	void *user_data)
	{
	xmlAttrPtr next = NULL;

	for (xmlAttrPtr a = pcmk__xe_first_attr(element); a != NULL; a = next) {
	next = a->next; // Grab now because attribute might get removed
	if ((match == NULL) \|\| match(a, user_data)) {
	if (!pcmk__check_acl(element, NULL, pcmk__xf_acl_write)) {
	crm_trace("ACLs prevent removal of attributes (%s and "
	"possibly others) from %s element",
	(const char ) a->name, (const char ) element->name);
	return; // ACLs apply to element, not particular attributes
	}

	if (pcmk__tracking_xml_changes(element, false)) {
	// Leave (marked for removal) until after diff is calculated
	set_parent_flag(element, pcmk__xf_dirty);
	pcmk__set_xml_flags((xml_node_private_t *) a->_private,
	pcmk__xf_deleted);
	} else {
	xmlRemoveProp(a);
	}
	}
	}
	}

	xmlDoc *
	getDocPtr(xmlNode * node)
	{
	xmlDoc *doc = NULL;

	CRM_CHECK(node != NULL, return NULL);

	doc = node->doc;
	if (doc == NULL) {
	doc = xmlNewDoc((pcmkXmlStr) "1.0");
	xmlDocSetRootElement(doc, node);
	xmlSetTreeDoc(node, doc);
	}
	return doc;
	}

	xmlNode *
	add_node_copy(xmlNode * parent, xmlNode * src_node)
	{
	xmlNode *child = NULL;
	xmlDoc *doc = getDocPtr(parent);

	CRM_CHECK(src_node != NULL, return NULL);

	child = xmlDocCopyNode(src_node, doc, 1);
	xmlAddChild(parent, child);
	pcmk__mark_xml_created(child);
	return child;
	}

	xmlNode *
	create_xml_node(xmlNode * parent, const char *name)
	{
	xmlDoc *doc = NULL;
	xmlNode *node = NULL;

	if (pcmk__str_empty(name)) {
	CRM_CHECK(name != NULL && name[0] == 0, return NULL);
	return NULL;
	}

	if (parent == NULL) {
	doc = xmlNewDoc((pcmkXmlStr) "1.0");
	node = xmlNewDocRawNode(doc, NULL, (pcmkXmlStr) name, NULL);
	xmlDocSetRootElement(doc, node);

	} else {
	doc = getDocPtr(parent);
	node = xmlNewDocRawNode(doc, NULL, (pcmkXmlStr) name, NULL);
	xmlAddChild(parent, node);
	}
	pcmk__mark_xml_created(node);
	return node;
	}

	xmlNode *
	pcmk_create_xml_text_node(xmlNode * parent, const char name, const char content)
	{
	xmlNode *node = create_xml_node(parent, name);

	if (node != NULL) {
	xmlNodeSetContent(node, (pcmkXmlStr) content);
	}

	return node;
	}

	xmlNode *
	pcmk_create_html_node(xmlNode * parent, const char element_name, const char id,
	const char class_name, const char text)
	{
	xmlNode *node = pcmk_create_xml_text_node(parent, element_name, text);

	if (class_name != NULL) {
	crm_xml_add(node, "class", class_name);
	}

	if (id != NULL) {
	crm_xml_add(node, "id", id);
	}

	return node;
	}

	/*!
	* Free an XML element and all of its children, removing it from its parent
	*
	* \param[in,out] xml XML element to free
	*/
	void
	pcmk_free_xml_subtree(xmlNode *xml)
	{
	xmlUnlinkNode(xml); // Detaches from parent and siblings
	xmlFreeNode(xml); // Frees
	}

	static void
	free_xml_with_position(xmlNode * child, int position)
	{
	if (child != NULL) {
	xmlNode *top = NULL;
	xmlDoc *doc = child->doc;
	xml_node_private_t *nodepriv = child->_private;
	xml_doc_private_t *docpriv = NULL;

	if (doc != NULL) {
	top = xmlDocGetRootElement(doc);
	}

	if (doc != NULL && top == child) {
	/* Free everything */
	xmlFreeDoc(doc);

	} else if (pcmk__check_acl(child, NULL, pcmk__xf_acl_write) == FALSE) {
	GString *xpath = NULL;

	pcmk__if_tracing({}, return);
	xpath = pcmk__element_xpath(child);
	qb_log_from_external_source(__func__, __FILE__,
	"Cannot remove %s %x", LOG_TRACE,
	__LINE__, 0, (const char *) xpath->str,
	nodepriv->flags);
	g_string_free(xpath, TRUE);
	return;

	} else {
	if (doc && pcmk__tracking_xml_changes(child, FALSE)
	&& !pcmk_is_set(nodepriv->flags, pcmk__xf_created)) {

	GString *xpath = pcmk__element_xpath(child);

	if (xpath != NULL) {
	pcmk__deleted_xml_t *deleted_obj = NULL;

	crm_trace("Deleting %s %p from %p",
	(const char *) xpath->str, child, doc);

	deleted_obj = calloc(1, sizeof(pcmk__deleted_xml_t));
	deleted_obj->path = strdup((const char *) xpath->str);

	CRM_ASSERT(deleted_obj->path != NULL);
	g_string_free(xpath, TRUE);

	deleted_obj->position = -1;
	/* Record the "position" only for XML comments for now */
	if (child->type == XML_COMMENT_NODE) {
	if (position >= 0) {
	deleted_obj->position = position;

	} else {
	deleted_obj->position = pcmk__xml_position(child,
	pcmk__xf_skip);
	}
	}

	docpriv = doc->_private;
	docpriv->deleted_objs = g_list_append(docpriv->deleted_objs, deleted_obj);
	pcmk__set_xml_doc_flag(child, pcmk__xf_dirty);
	}
	}
	pcmk_free_xml_subtree(child);
	}
	}
	}


	void
	free_xml(xmlNode * child)
	{
	free_xml_with_position(child, -1);
	}

	xmlNode *
	copy_xml(xmlNode * src)
	{
	xmlDoc *doc = xmlNewDoc((pcmkXmlStr) "1.0");
	xmlNode *copy = xmlDocCopyNode(src, doc, 1);

	CRM_ASSERT(copy != NULL);
	xmlDocSetRootElement(doc, copy);
	xmlSetTreeDoc(copy, doc);
	return copy;
	}

	xmlNode *
	string2xml(const char *input)
	{
	xmlNode *xml = NULL;
	xmlDocPtr output = NULL;
	xmlParserCtxtPtr ctxt = NULL;
	xmlErrorPtr last_error = NULL;

	if (input == NULL) {
	crm_err("Can't parse NULL input");
	return NULL;
	}

	/* create a parser context */
	ctxt = xmlNewParserCtxt();
	CRM_CHECK(ctxt != NULL, return NULL);

	xmlCtxtResetLastError(ctxt);
	xmlSetGenericErrorFunc(ctxt, pcmk__log_xmllib_err);
	output = xmlCtxtReadDoc(ctxt, (pcmkXmlStr) input, NULL, NULL,
	PCMK__XML_PARSE_OPTS);
	if (output) {
	xml = xmlDocGetRootElement(output);
	}
	last_error = xmlCtxtGetLastError(ctxt);
	if (last_error && last_error->code != XML_ERR_OK) {
	/* crm_abort(__FILE__,__func__,__LINE__, "last_error->code != XML_ERR_OK", TRUE, TRUE); */
	/*
	* http://xmlsoft.org/html/libxml-xmlerror.html#xmlErrorLevel
	* http://xmlsoft.org/html/libxml-xmlerror.html#xmlParserErrors
	*/
	crm_warn("Parsing failed (domain=%d, level=%d, code=%d): %s",
	last_error->domain, last_error->level, last_error->code, last_error->message);

	if (last_error->code == XML_ERR_DOCUMENT_EMPTY) {
	CRM_LOG_ASSERT("Cannot parse an empty string");

	} else if (last_error->code != XML_ERR_DOCUMENT_END) {
	crm_err("Couldn't%s parse %d chars: %s", xml ? " fully" : "", (int)strlen(input),
	input);
	if (xml != NULL) {
	crm_log_xml_err(xml, "Partial");
	}

	} else {
	int len = strlen(input);
	int lpc = 0;

	while(lpc < len) {
	crm_warn("Parse error[+%.3d]: %.80s", lpc, input+lpc);
	lpc += 80;
	}

	CRM_LOG_ASSERT("String parsing error");
	}
	}

	xmlFreeParserCtxt(ctxt);
	return xml;
	}

	xmlNode *
	stdin2xml(void)
	{
	size_t data_length = 0;
	size_t read_chars = 0;

	char *xml_buffer = NULL;
	xmlNode *xml_obj = NULL;

	do {
	xml_buffer = pcmk__realloc(xml_buffer, data_length + PCMK__BUFFER_SIZE);
	read_chars = fread(xml_buffer + data_length, 1, PCMK__BUFFER_SIZE,
	stdin);
	data_length += read_chars;
	} while (read_chars == PCMK__BUFFER_SIZE);

	if (data_length == 0) {
	crm_warn("No XML supplied on stdin");
	free(xml_buffer);
	return NULL;
	}

	xml_buffer[data_length] = '\0';
	xml_obj = string2xml(xml_buffer);
	free(xml_buffer);

	crm_log_xml_trace(xml_obj, "Created fragment");
	return xml_obj;
	}

	static char *
	decompress_file(const char *filename)
	{
	char *buffer = NULL;
	int rc = 0;
	size_t length = 0, read_len = 0;
	BZFILE *bz_file = NULL;
	FILE *input = fopen(filename, "r");

	if (input == NULL) {
	crm_perror(LOG_ERR, "Could not open %s for reading", filename);
	return NULL;
	}

	bz_file = BZ2_bzReadOpen(&rc, input, 0, 0, NULL, 0);
	if (rc != BZ_OK) {
	crm_err("Could not prepare to read compressed %s: %s "
	CRM_XS " bzerror=%d", filename, bz2_strerror(rc), rc);
	BZ2_bzReadClose(&rc, bz_file);
	fclose(input);
	return NULL;
	}

	rc = BZ_OK;
	// cppcheck seems not to understand the abort-logic in pcmk__realloc
	// cppcheck-suppress memleak
	while (rc == BZ_OK) {
	buffer = pcmk__realloc(buffer, PCMK__BUFFER_SIZE + length + 1);
	read_len = BZ2_bzRead(&rc, bz_file, buffer + length, PCMK__BUFFER_SIZE);

	crm_trace("Read %ld bytes from file: %d", (long)read_len, rc);

	if (rc == BZ_OK \|\| rc == BZ_STREAM_END) {
	length += read_len;
	}
	}

	buffer[length] = '\0';

	if (rc != BZ_STREAM_END) {
	crm_err("Could not read compressed %s: %s "
	CRM_XS " bzerror=%d", filename, bz2_strerror(rc), rc);
	free(buffer);
	buffer = NULL;
	}

	BZ2_bzReadClose(&rc, bz_file);
	fclose(input);
	return buffer;
	}

	/*!
	* \internal
	* \brief Remove XML text nodes from specified XML and all its children
	*
	* \param[in,out] xml XML to strip text from
	*/
	void
	pcmk__strip_xml_text(xmlNode *xml)
	{
	xmlNode *iter = xml->children;

	while (iter) {
	xmlNode *next = iter->next;

	switch (iter->type) {
	case XML_TEXT_NODE:
	/* Remove it */
	pcmk_free_xml_subtree(iter);
	break;

	case XML_ELEMENT_NODE:
	/* Search it */
	pcmk__strip_xml_text(iter);
	break;

	default:
	/* Leave it */
	break;
	}

	iter = next;
	}
	}

	xmlNode *
	filename2xml(const char *filename)
	{
	xmlNode *xml = NULL;
	xmlDocPtr output = NULL;
	bool uncompressed = true;
	xmlParserCtxtPtr ctxt = NULL;
	xmlErrorPtr last_error = NULL;

	/* create a parser context */
	ctxt = xmlNewParserCtxt();
	CRM_CHECK(ctxt != NULL, return NULL);

	xmlCtxtResetLastError(ctxt);
	xmlSetGenericErrorFunc(ctxt, pcmk__log_xmllib_err);

	if (filename) {
	uncompressed = !pcmk__ends_with_ext(filename, ".bz2");
	}

	if (pcmk__str_eq(filename, "-", pcmk__str_null_matches)) {
	/* STDIN_FILENO == fileno(stdin) */
	output = xmlCtxtReadFd(ctxt, STDIN_FILENO, "unknown.xml", NULL,
	PCMK__XML_PARSE_OPTS);

	} else if (uncompressed) {
	output = xmlCtxtReadFile(ctxt, filename, NULL, PCMK__XML_PARSE_OPTS);

	} else {
	char *input = decompress_file(filename);

	output = xmlCtxtReadDoc(ctxt, (pcmkXmlStr) input, NULL, NULL,
	PCMK__XML_PARSE_OPTS);
	free(input);
	}

	if (output && (xml = xmlDocGetRootElement(output))) {
	pcmk__strip_xml_text(xml);
	}

	last_error = xmlCtxtGetLastError(ctxt);
	if (last_error && last_error->code != XML_ERR_OK) {
	/* crm_abort(__FILE__,__func__,__LINE__, "last_error->code != XML_ERR_OK", TRUE, TRUE); */
	/*
	* http://xmlsoft.org/html/libxml-xmlerror.html#xmlErrorLevel
	* http://xmlsoft.org/html/libxml-xmlerror.html#xmlParserErrors
	*/
	crm_err("Parsing failed (domain=%d, level=%d, code=%d): %s",
	last_error->domain, last_error->level, last_error->code, last_error->message);

	if (last_error && last_error->code != XML_ERR_OK) {
	crm_err("Couldn't%s parse %s", xml ? " fully" : "", filename);
	if (xml != NULL) {
	crm_log_xml_err(xml, "Partial");
	}
	}
	}

	xmlFreeParserCtxt(ctxt);
	return xml;
	}

	/*!
	* \internal
	* \brief Add a "last written" attribute to an XML element, set to current time
	*
	* \param[in,out] xe XML element to add attribute to
	*
	* \return Value that was set, or NULL on error
	*/
	const char *
	pcmk__xe_add_last_written(xmlNode *xe)
	{
	char *now_s = pcmk__epoch2str(NULL, 0);
	const char *result = NULL;

	result = crm_xml_add(xe, XML_CIB_ATTR_WRITTEN,
	pcmk__s(now_s, "Could not determine current time"));
	free(now_s);
	return result;
	}

	/*!
	* \brief Sanitize a string so it is usable as an XML ID
	*
	* \param[in,out] id String to sanitize
	*/
	void
	crm_xml_sanitize_id(char *id)
	{
	char *c;

	for (c = id; *c; ++c) {
	/* @TODO Sanitize more comprehensively */
	switch (*c) {
	case ':':
	case '#':
	*c = '.';
	}
	}
	}

	/*!
	* \brief Set the ID of an XML element using a format
	*
	* \param[in,out] xml XML element
	* \param[in] fmt printf-style format
	* \param[in] ... any arguments required by format
	*/
	void
	crm_xml_set_id(xmlNode xml, const char format, ...)
	{
	va_list ap;
	int len = 0;
	char *id = NULL;

	/* equivalent to crm_strdup_printf() */
	va_start(ap, format);
	len = vasprintf(&id, format, ap);
	va_end(ap);
	CRM_ASSERT(len > 0);

	crm_xml_sanitize_id(id);
	crm_xml_add(xml, XML_ATTR_ID, id);
	free(id);
	}

	/*!
	* \internal
	* \brief Write XML to a file stream
	*
	* \param[in] xml_node XML to write
	* \param[in] filename Name of file being written (for logging only)
	* \param[in,out] stream Open file stream corresponding to filename
	* \param[in] compress Whether to compress XML before writing
	* \param[out] nbytes Number of bytes written
	*
	* \return Standard Pacemaker return code
	*/
	static int
	write_xml_stream(xmlNode xml_node, const char filename, FILE *stream,
	bool compress, unsigned int *nbytes)
	{
	int rc = pcmk_rc_ok;
	char *buffer = NULL;

	*nbytes = 0;
	crm_log_xml_trace(xml_node, "writing");

	buffer = dump_xml_formatted(xml_node);
	CRM_CHECK(buffer && strlen(buffer),
	crm_log_xml_warn(xml_node, "formatting failed");
	rc = pcmk_rc_error;
	goto bail);

	if (compress) {
	unsigned int in = 0;
	BZFILE *bz_file = NULL;

	rc = BZ_OK;
	bz_file = BZ2_bzWriteOpen(&rc, stream, 5, 0, 30);
	if (rc != BZ_OK) {
	crm_warn("Not compressing %s: could not prepare file stream: %s "
	CRM_XS " bzerror=%d", filename, bz2_strerror(rc), rc);
	} else {
	BZ2_bzWrite(&rc, bz_file, buffer, strlen(buffer));
	if (rc != BZ_OK) {
	crm_warn("Not compressing %s: could not compress data: %s "
	CRM_XS " bzerror=%d errno=%d",
	filename, bz2_strerror(rc), rc, errno);
	}
	}

	if (rc == BZ_OK) {
	BZ2_bzWriteClose(&rc, bz_file, 0, &in, nbytes);
	if (rc != BZ_OK) {
	crm_warn("Not compressing %s: could not write compressed data: %s "
	CRM_XS " bzerror=%d errno=%d",
	filename, bz2_strerror(rc), rc, errno);
	*nbytes = 0; // retry without compression
	} else {
	crm_trace("Compressed XML for %s from %u bytes to %u",
	filename, in, *nbytes);
	}
	}
	rc = pcmk_rc_ok; // Either true, or we'll retry without compression
	}

	if (*nbytes == 0) {
	rc = fprintf(stream, "%s", buffer);
	if (rc < 0) {
	rc = errno;
	crm_perror(LOG_ERR, "writing %s", filename);
	} else {
	*nbytes = (unsigned int) rc;
	rc = pcmk_rc_ok;
	}
	}

	bail:

	if (fflush(stream) != 0) {
	rc = errno;
	crm_perror(LOG_ERR, "flushing %s", filename);
	}

	/* Don't report error if the file does not support synchronization */
	if (fsync(fileno(stream)) < 0 && errno != EROFS && errno != EINVAL) {
	rc = errno;
	crm_perror(LOG_ERR, "synchronizing %s", filename);
	}

	fclose(stream);

	crm_trace("Saved %d bytes to %s as XML", *nbytes, filename);
	free(buffer);

	return rc;
	}

	/*!
	* \brief Write XML to a file descriptor
	*
	* \param[in] xml_node XML to write
	* \param[in] filename Name of file being written (for logging only)
	* \param[in] fd Open file descriptor corresponding to filename
	* \param[in] compress Whether to compress XML before writing
	*
	* \return Number of bytes written on success, -errno otherwise
	*/
	int
	write_xml_fd(xmlNode * xml_node, const char *filename, int fd, gboolean compress)
	{
	FILE *stream = NULL;
	unsigned int nbytes = 0;
	int rc = pcmk_rc_ok;

	CRM_CHECK(xml_node && (fd > 0), return -EINVAL);
	stream = fdopen(fd, "w");
	if (stream == NULL) {
	return -errno;
	}
	rc = write_xml_stream(xml_node, filename, stream, compress, &nbytes);
	if (rc != pcmk_rc_ok) {
	return pcmk_rc2legacy(rc);
	}
	return (int) nbytes;
	}

	/*!
	* \brief Write XML to a file
	*
	* \param[in] xml_node XML to write
	* \param[in] filename Name of file to write
	* \param[in] compress Whether to compress XML before writing
	*
	* \return Number of bytes written on success, -errno otherwise
	*/
	int
	write_xml_file(xmlNode * xml_node, const char *filename, gboolean compress)
	{
	FILE *stream = NULL;
	unsigned int nbytes = 0;
	int rc = pcmk_rc_ok;

	CRM_CHECK(xml_node && filename, return -EINVAL);
	stream = fopen(filename, "w");
	if (stream == NULL) {
	return -errno;
	}
	rc = write_xml_stream(xml_node, filename, stream, compress, &nbytes);
	if (rc != pcmk_rc_ok) {
	return pcmk_rc2legacy(rc);
	}
	return (int) nbytes;
	}

	// Replace a portion of a dynamically allocated string (reallocating memory)
	static char *
	replace_text(char text, int start, size_t length, const char *replace)
	{
	size_t offset = strlen(replace) - 1; // We have space for 1 char already

	*length += offset;
	text = pcmk__realloc(text, *length);

	for (size_t lpc = (*length) - 1; lpc > (start + offset); lpc--) {
	text[lpc] = text[lpc - offset];
	}

	memcpy(text + start, replace, offset + 1);
	return text;
	}

	/*!
	* \brief Replace special characters with their XML escape sequences
	*
	* \param[in] text Text to escape
	*
	* \return Newly allocated string equivalent to \p text but with special
	* characters replaced with XML escape sequences (or NULL if \p text
	* is NULL)
	*/
	char *
	crm_xml_escape(const char *text)
	{
	size_t length;
	char *copy;

	/*
	* When xmlCtxtReadDoc() parses < and friends in a
	* value, it converts them to their human readable
	* form.
	*
	* If one uses xmlNodeDump() to convert it back to a
	* string, all is well, because special characters are
	* converted back to their escape sequences.
	*
	* However xmlNodeDump() is randomly dog slow, even with the same
	* input. So we need to replicate the escaping in our custom
	* version so that the result can be re-parsed by xmlCtxtReadDoc()
	* when necessary.
	*/

	if (text == NULL) {
	return NULL;
	}

	length = 1 + strlen(text);
	copy = strdup(text);
	CRM_ASSERT(copy != NULL);
	for (size_t index = 0; index < length; index++) {
	if(copy[index] & 0x80 && copy[index+1] & 0x80){
	index++;
	break;
	}
	switch (copy[index]) {
	case 0:
	break;
	case '<':
	copy = replace_text(copy, index, &length, "<");
	break;
	case '>':
	copy = replace_text(copy, index, &length, ">");
	break;
	case '"':
	copy = replace_text(copy, index, &length, """);
	break;
	case '\'':
	copy = replace_text(copy, index, &length, "'");
	break;
	case '&':
	copy = replace_text(copy, index, &length, "&");
	break;
	case '\t':
	/* Might as well just expand to a few spaces... */
	copy = replace_text(copy, index, &length, " ");
	break;
	case '\n':
	copy = replace_text(copy, index, &length, "\\n");
	break;
	case '\r':
	copy = replace_text(copy, index, &length, "\\r");
	break;
	default:
	/* Check for and replace non-printing characters with their octal equivalent */
	if(copy[index] < ' ' \|\| copy[index] > '~') {
	char *replace = crm_strdup_printf("\\%.3o", copy[index]);

	copy = replace_text(copy, index, &length, replace);
	free(replace);
	}
	}
	}
	return copy;
	}

	-/*!
	- * \internal
	- * \brief Append an XML attribute to a buffer
	- *
	- * \param[in] attr Attribute to append
	- * \param[in,out] buffer Where to append the content (must not be \p NULL)
	- */
	-static void
	-dump_xml_attr(const xmlAttr attr, GString buffer)
	-{
	- char *p_value = NULL;
	- const char *p_name = NULL;
	- xml_node_private_t *nodepriv = NULL;
	-
	- if (attr == NULL \|\| attr->children == NULL) {
	- return;
	- }
	-
	- nodepriv = attr->_private;
	- if (nodepriv && pcmk_is_set(nodepriv->flags, pcmk__xf_deleted)) {
	- return;
	- }
	-
	- p_name = (const char *) attr->name;
	- p_value = crm_xml_escape((const char *)attr->children->content);
	- pcmk__g_strcat(buffer, " ", p_name, "=\"", pcmk__s(p_value, "<null>"), "\"",
	- NULL);
	-
	- free(p_value);
	-}
	-
	/*!
	* \internal
	* \brief Append a string representation of an XML element to a buffer
	*
	* \param[in] data XML whose representation to append
	* \param[in] options Group of \p pcmk__xml_fmt_options flags
	* \param[in,out] buffer Where to append the content (must not be \p NULL)
	* \param[in] depth Current indentation level
	*/
	static void
	dump_xml_element(const xmlNode data, uint32_t options, GString buffer,
	int depth)
	{
	const char *name = crm_element_name(data);
	bool pretty = pcmk_is_set(options, pcmk__xml_fmt_pretty);
	bool filtered = pcmk_is_set(options, pcmk__xml_fmt_filtered);
	int spaces = pretty? (2 * depth) : 0;

	CRM_ASSERT(name != NULL);

	for (int lpc = 0; lpc < spaces; lpc++) {
	g_string_append_c(buffer, ' ');
	}

	pcmk__g_strcat(buffer, "<", name, NULL);

	for (const xmlAttr *attr = pcmk__xe_first_attr(data); attr != NULL;
	attr = attr->next) {

	if (!filtered \|\| !pcmk__xa_filterable((const char *) (attr->name))) {
	- dump_xml_attr(attr, buffer);
	+ pcmk__dump_xml_attr(attr, buffer);
	}
	}

	if (data->children == NULL) {
	g_string_append(buffer, "/>");

	} else {
	g_string_append_c(buffer, '>');
	}

	if (pretty) {
	g_string_append_c(buffer, '\n');
	}

	if (data->children) {
	xmlNode *xChild = NULL;
	for(xChild = data->children; xChild != NULL; xChild = xChild->next) {
	pcmk__xml2text(xChild, options, buffer, depth + 1);
	}

	for (int lpc = 0; lpc < spaces; lpc++) {
	g_string_append_c(buffer, ' ');
	}

	pcmk__g_strcat(buffer, "</", name, ">", NULL);

	if (pretty) {
	g_string_append_c(buffer, '\n');
	}
	}
	}

	/*!
	* \internal
	* \brief Append XML text content to a buffer
	*
	* \param[in] data XML whose content to append
	* \param[in] options Group of \p xml_log_options flags
	* \param[in,out] buffer Where to append the content (must not be \p NULL)
	* \param[in] depth Current indentation level
	*/
	static void
	dump_xml_text(const xmlNode data, uint32_t options, GString buffer,
	int depth)
	{
	/* @COMPAT: Remove when log_data_element() is removed. There are no internal
	* code paths to this, except through the deprecated log_data_element().
	*/
	bool pretty = pcmk_is_set(options, pcmk__xml_fmt_pretty);
	int spaces = pretty? (2 * depth) : 0;

	for (int lpc = 0; lpc < spaces; lpc++) {
	g_string_append_c(buffer, ' ');
	}

	g_string_append(buffer, (const gchar *) data->content);

	if (pretty) {
	g_string_append_c(buffer, '\n');
	}
	}

	/*!
	* \internal
	* \brief Append XML CDATA content to a buffer
	*
	* \param[in] data XML whose content to append
	* \param[in] options Group of \p pcmk__xml_fmt_options flags
	* \param[in,out] buffer Where to append the content (must not be \p NULL)
	* \param[in] depth Current indentation level
	*/
	static void
	dump_xml_cdata(const xmlNode data, uint32_t options, GString buffer,
	int depth)
	{
	bool pretty = pcmk_is_set(options, pcmk__xml_fmt_pretty);
	int spaces = pretty? (2 * depth) : 0;

	for (int lpc = 0; lpc < spaces; lpc++) {
	g_string_append_c(buffer, ' ');
	}

	pcmk__g_strcat(buffer, "<![CDATA[", (const char *) data->content, "]]>",
	NULL);

	if (pretty) {
	g_string_append_c(buffer, '\n');
	}
	}

	/*!
	* \internal
	* \brief Append an XML comment to a buffer
	*
	* \param[in] data XML whose content to append
	* \param[in] options Group of \p pcmk__xml_fmt_options flags
	* \param[in,out] buffer Where to append the content (must not be \p NULL)
	* \param[in] depth Current indentation level
	*/
	static void
	dump_xml_comment(const xmlNode data, uint32_t options, GString buffer,
	int depth)
	{
	bool pretty = pcmk_is_set(options, pcmk__xml_fmt_pretty);
	int spaces = pretty? (2 * depth) : 0;

	for (int lpc = 0; lpc < spaces; lpc++) {
	g_string_append_c(buffer, ' ');
	}

	pcmk__g_strcat(buffer, "<!--", (const char *) data->content, "-->", NULL);

	if (pretty) {
	g_string_append_c(buffer, '\n');
	}
	}

	#define PCMK__XMLDUMP_STATS 0

	/*!
	* \internal
	* \brief Create a text representation of an XML object
	*
	* \param[in] data XML to convert
	* \param[in] options Group of \p pcmk__xml_fmt_options flags
	* \param[in,out] buffer Where to store the text (must not be \p NULL)
	* \param[in] depth Current indentation level
	*/
	void
	pcmk__xml2text(xmlNodePtr data, uint32_t options, GString *buffer, int depth)
	{
	if (data == NULL) {
	crm_trace("Nothing to dump");
	return;
	}

	CRM_ASSERT(buffer != NULL);
	CRM_CHECK(depth >= 0, depth = 0);

	if (pcmk_is_set(options, pcmk__xml_fmt_full)) {
	/* libxml's serialization reuse is a good idea, sadly we cannot
	apply it for the filtered cases (preceding filtering pass
	would preclude further reuse of such in-situ modified XML
	in generic context and is likely not a win performance-wise),
	and there's also a historically unstable throughput argument
	(likely stemming from memory allocation overhead, eventhough
	that shall be minimized with defaults preset in crm_xml_init) */
	#if (PCMK__XMLDUMP_STATS - 0)
	time_t next, new = time(NULL);
	#endif
	xmlDoc *doc;
	xmlOutputBuffer *xml_buffer;

	doc = getDocPtr(data);
	/* doc will only be NULL if data is */
	CRM_CHECK(doc != NULL, return);

	xml_buffer = xmlAllocOutputBuffer(NULL);
	CRM_ASSERT(xml_buffer != NULL);

	/* XXX we could setup custom allocation scheme for the particular
	buffer, but it's subsumed with crm_xml_init that needs to
	be invoked prior to entering this function as such, since
	its other branch vitally depends on it -- what can be done
	about this all is to have a facade parsing functions that
	would 100% mark entering libxml code for us, since we don't
	do anything as crazy as swapping out the binary form of the
	parsed tree (but those would need to be strictly used as
	opposed to libxml's raw functions) */

	xmlNodeDumpOutput(xml_buffer, doc, data, 0,
	pcmk_is_set(options, pcmk__xml_fmt_pretty), NULL);
	/* attempt adding final NL - failing shouldn't be fatal here */
	(void) xmlOutputBufferWrite(xml_buffer, sizeof("\n") - 1, "\n");
	if (xml_buffer->buffer != NULL) {
	g_string_append(buffer,
	(const gchar *) xmlBufContent(xml_buffer->buffer));
	}

	#if (PCMK__XMLDUMP_STATS - 0)
	next = time(NULL);
	if ((now + 1) < next) {
	crm_log_xml_trace(data, "Long time");
	crm_err("xmlNodeDumpOutput() -> %lld bytes took %ds",
	(long long) buffer->len, next - now);
	}
	#endif

	/* asserted allocation before so there should be something to remove */
	(void) xmlOutputBufferClose(xml_buffer);
	return;
	}

	switch(data->type) {
	case XML_ELEMENT_NODE:
	/* Handle below */
	dump_xml_element(data, options, buffer, depth);
	break;
	case XML_TEXT_NODE:
	if (pcmk_is_set(options, pcmk__xml_fmt_text)) {
	/* @COMPAT: Remove when log_data_element() is removed. There are
	* no other internal code paths that set pcmk__xml_fmt_text.
	* Keep an empty case handler so that we don't log an unhandled
	* type warning.
	*/
	dump_xml_text(data, options, buffer, depth);
	}
	break;
	case XML_COMMENT_NODE:
	dump_xml_comment(data, options, buffer, depth);
	break;
	case XML_CDATA_SECTION_NODE:
	dump_xml_cdata(data, options, buffer, depth);
	break;
	default:
	crm_warn("Unhandled type: %d", data->type);
	break;

	/*
	XML_ATTRIBUTE_NODE = 2
	XML_ENTITY_REF_NODE = 5
	XML_ENTITY_NODE = 6
	XML_PI_NODE = 7
	XML_DOCUMENT_NODE = 9
	XML_DOCUMENT_TYPE_NODE = 10
	XML_DOCUMENT_FRAG_NODE = 11
	XML_NOTATION_NODE = 12
	XML_HTML_DOCUMENT_NODE = 13
	XML_DTD_NODE = 14
	XML_ELEMENT_DECL = 15
	XML_ATTRIBUTE_DECL = 16
	XML_ENTITY_DECL = 17
	XML_NAMESPACE_DECL = 18
	XML_XINCLUDE_START = 19
	XML_XINCLUDE_END = 20
	XML_DOCB_DOCUMENT_NODE = 21
	*/
	}
	}

	char *
	dump_xml_formatted_with_text(xmlNode * an_xml_node)
	{
	char *buffer = NULL;
	GString *g_buffer = g_string_sized_new(1024);

	pcmk__xml2text(an_xml_node, pcmk__xml_fmt_pretty\|pcmk__xml_fmt_full,
	g_buffer, 0);

	pcmk__str_update(&buffer, g_buffer->str);
	g_string_free(g_buffer, TRUE);
	return buffer;
	}

	char *
	dump_xml_formatted(xmlNode * an_xml_node)
	{
	char *buffer = NULL;
	GString *g_buffer = g_string_sized_new(1024);

	pcmk__xml2text(an_xml_node, pcmk__xml_fmt_pretty, g_buffer, 0);

	pcmk__str_update(&buffer, g_buffer->str);
	g_string_free(g_buffer, TRUE);
	return buffer;
	}

	char *
	dump_xml_unformatted(xmlNode * an_xml_node)
	{
	char *buffer = NULL;
	GString *g_buffer = g_string_sized_new(1024);

	pcmk__xml2text(an_xml_node, 0, g_buffer, 0);

	pcmk__str_update(&buffer, g_buffer->str);
	g_string_free(g_buffer, TRUE);
	return buffer;
	}

	int
	pcmk__xml2fd(int fd, xmlNode *cur)
	{
	bool success;

	xmlOutputBuffer *fd_out = xmlOutputBufferCreateFd(fd, NULL);
	CRM_ASSERT(fd_out != NULL);
	xmlNodeDumpOutput(fd_out, cur->doc, cur, 0, pcmk__xml_fmt_pretty, NULL);

	success = xmlOutputBufferWrite(fd_out, sizeof("\n") - 1, "\n") != -1;

	success = xmlOutputBufferClose(fd_out) != -1 && success;

	if (!success) {
	return EIO;
	}

	fsync(fd);
	return pcmk_rc_ok;

	}

	gboolean
	xml_has_children(const xmlNode * xml_root)
	{
	if (xml_root != NULL && xml_root->children != NULL) {
	return TRUE;
	}
	return FALSE;
	}

	void
	xml_remove_prop(xmlNode * obj, const char *name)
	{
	if (pcmk__check_acl(obj, NULL, pcmk__xf_acl_write) == FALSE) {
	crm_trace("Cannot remove %s from %s", name, obj->name);

	} else if (pcmk__tracking_xml_changes(obj, FALSE)) {
	/* Leave in place (marked for removal) until after the diff is calculated */
	xmlAttr *attr = xmlHasProp(obj, (pcmkXmlStr) name);
	xml_node_private_t *nodepriv = attr->_private;

	set_parent_flag(obj, pcmk__xf_dirty);
	pcmk__set_xml_flags(nodepriv, pcmk__xf_deleted);
	} else {
	xmlUnsetProp(obj, (pcmkXmlStr) name);
	}
	}

	void
	save_xml_to_file(xmlNode * xml, const char desc, const char filename)
	{
	char *f = NULL;

	if (filename == NULL) {
	char *uuid = crm_generate_uuid();

	f = crm_strdup_printf("%s/%s", pcmk__get_tmpdir(), uuid);
	filename = f;
	free(uuid);
	}

	crm_info("Saving %s to %s", desc, filename);
	write_xml_file(xml, filename, FALSE);
	free(f);
	}

	/*!
	* \internal
	* \brief Set a flag on all attributes of an XML element
	*
	* \param[in,out] xml XML node to set flags on
	* \param[in] flag XML private flag to set
	*/
	static void
	set_attrs_flag(xmlNode *xml, enum xml_private_flags flag)
	{
	for (xmlAttr *attr = pcmk__xe_first_attr(xml); attr; attr = attr->next) {
	pcmk__set_xml_flags((xml_node_private_t *) (attr->_private), flag);
	}
	}

	/*!
	* \internal
	* \brief Add an XML attribute to a node, marked as deleted
	*
	* When calculating XML changes, we need to know when an attribute has been
	* deleted. Add the attribute back to the new XML, so that we can check the
	* removal against ACLs, and mark it as deleted for later removal after
	* differences have been calculated.
	*
	* \param[in,out] new_xml XML to modify
	* \param[in] element Name of XML element that changed (for logging)
	* \param[in] attr_name Name of attribute that was deleted
	* \param[in] old_value Value of attribute that was deleted
	*/
	static void
	mark_attr_deleted(xmlNode new_xml, const char element, const char *attr_name,
	const char *old_value)
	{
	xml_doc_private_t *docpriv = new_xml->doc->_private;
	xmlAttr *attr = NULL;
	xml_node_private_t *nodepriv;

	// Prevent the dirty flag being set recursively upwards
	pcmk__clear_xml_flags(docpriv, pcmk__xf_tracking);

	// Restore the old value (and the tracking flag)
	attr = xmlSetProp(new_xml, (pcmkXmlStr) attr_name, (pcmkXmlStr) old_value);
	pcmk__set_xml_flags(docpriv, pcmk__xf_tracking);

	// Reset flags (so the attribute doesn't appear as newly created)
	nodepriv = attr->_private;
	nodepriv->flags = 0;

	// Check ACLs and mark restored value for later removal
	xml_remove_prop(new_xml, attr_name);

	crm_trace("XML attribute %s=%s was removed from %s",
	attr_name, old_value, element);
	}

	/*
	* \internal
	* \brief Check ACLs for a changed XML attribute
	*/
	static void
	mark_attr_changed(xmlNode new_xml, const char element, const char *attr_name,
	const char *old_value)
	{
	char *vcopy = crm_element_value_copy(new_xml, attr_name);

	crm_trace("XML attribute %s was changed from '%s' to '%s' in %s",
	attr_name, old_value, vcopy, element);

	// Restore the original value
	xmlSetProp(new_xml, (pcmkXmlStr) attr_name, (pcmkXmlStr) old_value);

	// Change it back to the new value, to check ACLs
	crm_xml_add(new_xml, attr_name, vcopy);
	free(vcopy);
	}

	/*!
	* \internal
	* \brief Mark an XML attribute as having changed position
	*
	* \param[in,out] new_xml XML to modify
	* \param[in] element Name of XML element that changed (for logging)
	* \param[in,out] old_attr Attribute that moved, in original XML
	* \param[in,out] new_attr Attribute that moved, in \p new_xml
	* \param[in] p_old Ordinal position of \p old_attr in original XML
	* \param[in] p_new Ordinal position of \p new_attr in \p new_xml
	*/
	static void
	mark_attr_moved(xmlNode new_xml, const char element, xmlAttr *old_attr,
	xmlAttr *new_attr, int p_old, int p_new)
	{
	xml_node_private_t *nodepriv = new_attr->_private;

	crm_trace("XML attribute %s moved from position %d to %d in %s",
	old_attr->name, p_old, p_new, element);

	// Mark document, element, and all element's parents as changed
	- mark_xml_node_dirty(new_xml);
	+ pcmk__mark_xml_node_dirty(new_xml);

	// Mark attribute as changed
	pcmk__set_xml_flags(nodepriv, pcmk__xf_dirty\|pcmk__xf_moved);

	nodepriv = (p_old > p_new)? old_attr->_private : new_attr->_private;
	pcmk__set_xml_flags(nodepriv, pcmk__xf_skip);
	}

	/*!
	* \internal
	* \brief Calculate differences in all previously existing XML attributes
	*
	* \param[in,out] old_xml Original XML to compare
	* \param[in,out] new_xml New XML to compare
	*/
	static void
	xml_diff_old_attrs(xmlNode old_xml, xmlNode new_xml)
	{
	xmlAttr *attr_iter = pcmk__xe_first_attr(old_xml);

	while (attr_iter != NULL) {
	const char name = (const char ) attr_iter->name;
	xmlAttr *old_attr = attr_iter;
	xmlAttr *new_attr = xmlHasProp(new_xml, attr_iter->name);
	const char *old_value = pcmk__xml_attr_value(attr_iter);

	attr_iter = attr_iter->next;
	if (new_attr == NULL) {
	mark_attr_deleted(new_xml, (const char *) old_xml->name, name,
	old_value);

	} else {
	xml_node_private_t *nodepriv = new_attr->_private;
	int new_pos = pcmk__xml_position((xmlNode*) new_attr,
	pcmk__xf_skip);
	int old_pos = pcmk__xml_position((xmlNode*) old_attr,
	pcmk__xf_skip);
	const char *new_value = crm_element_value(new_xml, name);

	// This attribute isn't new
	pcmk__clear_xml_flags(nodepriv, pcmk__xf_created);

	if (strcmp(new_value, old_value) != 0) {
	mark_attr_changed(new_xml, (const char *) old_xml->name, name,
	old_value);

	} else if ((old_pos != new_pos)
	&& !pcmk__tracking_xml_changes(new_xml, TRUE)) {
	mark_attr_moved(new_xml, (const char *) old_xml->name,
	old_attr, new_attr, old_pos, new_pos);
	}
	}
	}
	}

	/*!
	* \internal
	* \brief Check all attributes in new XML for creation
	*
	* For each of a given XML element's attributes marked as newly created, accept
	* (and mark as dirty) or reject the creation according to ACLs.
	*
	* \param[in,out] new_xml XML to check
	*/
	static void
	mark_created_attrs(xmlNode *new_xml)
	{
	xmlAttr *attr_iter = pcmk__xe_first_attr(new_xml);

	while (attr_iter != NULL) {
	xmlAttr *new_attr = attr_iter;
	xml_node_private_t *nodepriv = attr_iter->_private;

	attr_iter = attr_iter->next;
	if (pcmk_is_set(nodepriv->flags, pcmk__xf_created)) {
	const char attr_name = (const char ) new_attr->name;

	crm_trace("Created new attribute %s=%s in %s",
	attr_name, pcmk__xml_attr_value(new_attr),
	new_xml->name);

	/* Check ACLs (we can't use the remove-then-create trick because it
	* would modify the attribute position).
	*/
	if (pcmk__check_acl(new_xml, attr_name, pcmk__xf_acl_write)) {
	pcmk__mark_xml_attr_dirty(new_attr);
	} else {
	// Creation was not allowed, so remove the attribute
	xmlUnsetProp(new_xml, new_attr->name);
	}
	}
	}
	}

	/*!
	* \internal
	* \brief Calculate differences in attributes between two XML nodes
	*
	* \param[in,out] old_xml Original XML to compare
	* \param[in,out] new_xml New XML to compare
	*/
	static void
	xml_diff_attrs(xmlNode old_xml, xmlNode new_xml)
	{
	set_attrs_flag(new_xml, pcmk__xf_created); // cleared later if not really new
	xml_diff_old_attrs(old_xml, new_xml);
	mark_created_attrs(new_xml);
	}

	/*!
	* \internal
	* \brief Add an XML child element to a node, marked as deleted
	*
	* When calculating XML changes, we need to know when a child element has been
	* deleted. Add the child back to the new XML, so that we can check the removal
	* against ACLs, and mark it as deleted for later removal after differences have
	* been calculated.
	*
	* \param[in,out] old_child Child element from original XML
	* \param[in,out] new_parent New XML to add marked copy to
	*/
	static void
	mark_child_deleted(xmlNode old_child, xmlNode new_parent)
	{
	// Re-create the child element so we can check ACLs
	xmlNode *candidate = add_node_copy(new_parent, old_child);

	// Clear flags on new child and its children
	reset_xml_node_flags(candidate);

	// Check whether ACLs allow the deletion
	pcmk__apply_acl(xmlDocGetRootElement(candidate->doc));

	// Remove the child again (which will track it in document's deleted_objs)
	free_xml_with_position(candidate,
	pcmk__xml_position(old_child, pcmk__xf_skip));

	if (pcmk__xml_match(new_parent, old_child, true) == NULL) {
	pcmk__set_xml_flags((xml_node_private_t *) (old_child->_private),
	pcmk__xf_skip);
	}
	}

	static void
	mark_child_moved(xmlNode old_child, xmlNode new_parent, xmlNode *new_child,
	int p_old, int p_new)
	{
	xml_node_private_t *nodepriv = new_child->_private;

	crm_trace("Child element %s with id='%s' moved from position %d to %d under %s",
	new_child->name, (ID(new_child)? ID(new_child) : "<no id>"),
	p_old, p_new, new_parent->name);
	- mark_xml_node_dirty(new_parent);
	+ pcmk__mark_xml_node_dirty(new_parent);
	pcmk__set_xml_flags(nodepriv, pcmk__xf_moved);

	if (p_old > p_new) {
	nodepriv = old_child->_private;
	} else {
	nodepriv = new_child->_private;
	}
	pcmk__set_xml_flags(nodepriv, pcmk__xf_skip);
	}

	// Given original and new XML, mark new XML portions that have changed
	static void
	mark_xml_changes(xmlNode old_xml, xmlNode new_xml, bool check_top)
	{
	xmlNode *cIter = NULL;
	xml_node_private_t *nodepriv = NULL;

	CRM_CHECK(new_xml != NULL, return);
	if (old_xml == NULL) {
	pcmk__mark_xml_created(new_xml);
	pcmk__apply_creation_acl(new_xml, check_top);
	return;
	}

	nodepriv = new_xml->_private;
	CRM_CHECK(nodepriv != NULL, return);

	if(nodepriv->flags & pcmk__xf_processed) {
	/* Avoid re-comparing nodes */
	return;
	}
	pcmk__set_xml_flags(nodepriv, pcmk__xf_processed);

	xml_diff_attrs(old_xml, new_xml);

	// Check for differences in the original children
	for (cIter = pcmk__xml_first_child(old_xml); cIter != NULL; ) {
	xmlNode *old_child = cIter;
	xmlNode *new_child = pcmk__xml_match(new_xml, cIter, true);

	cIter = pcmk__xml_next(cIter);
	if(new_child) {
	mark_xml_changes(old_child, new_child, TRUE);

	} else {
	mark_child_deleted(old_child, new_xml);
	}
	}

	// Check for moved or created children
	for (cIter = pcmk__xml_first_child(new_xml); cIter != NULL; ) {
	xmlNode *new_child = cIter;
	xmlNode *old_child = pcmk__xml_match(old_xml, cIter, true);

	cIter = pcmk__xml_next(cIter);
	if(old_child == NULL) {
	// This is a newly created child
	nodepriv = new_child->_private;
	pcmk__set_xml_flags(nodepriv, pcmk__xf_skip);
	mark_xml_changes(old_child, new_child, TRUE);

	} else {
	/* Check for movement, we already checked for differences */
	int p_new = pcmk__xml_position(new_child, pcmk__xf_skip);
	int p_old = pcmk__xml_position(old_child, pcmk__xf_skip);

	if(p_old != p_new) {
	mark_child_moved(old_child, new_xml, new_child, p_old, p_new);
	}
	}
	}
	}

	void
	xml_calculate_significant_changes(xmlNode old_xml, xmlNode new_xml)
	{
	pcmk__set_xml_doc_flag(new_xml, pcmk__xf_lazy);
	xml_calculate_changes(old_xml, new_xml);
	}

	// Called functions may set the \p pcmk__xf_skip flag on parts of \p old_xml
	void
	xml_calculate_changes(xmlNode old_xml, xmlNode new_xml)
	{
	CRM_CHECK(pcmk__str_eq(crm_element_name(old_xml), crm_element_name(new_xml), pcmk__str_casei),
	return);
	CRM_CHECK(pcmk__str_eq(ID(old_xml), ID(new_xml), pcmk__str_casei), return);

	if(xml_tracking_changes(new_xml) == FALSE) {
	xml_track_changes(new_xml, NULL, NULL, FALSE);
	}

	mark_xml_changes(old_xml, new_xml, FALSE);
	}

	gboolean
	can_prune_leaf(xmlNode * xml_node)
	{
	xmlNode *cIter = NULL;
	gboolean can_prune = TRUE;
	const char *name = crm_element_name(xml_node);

	if (pcmk__strcase_any_of(name, XML_TAG_RESOURCE_REF, XML_CIB_TAG_OBJ_REF,
	XML_ACL_TAG_ROLE_REF, XML_ACL_TAG_ROLE_REFv1, NULL)) {
	return FALSE;
	}

	for (xmlAttrPtr a = pcmk__xe_first_attr(xml_node); a != NULL; a = a->next) {
	const char p_name = (const char ) a->name;

	if (strcmp(p_name, XML_ATTR_ID) == 0) {
	continue;
	}
	can_prune = FALSE;
	}

	cIter = pcmk__xml_first_child(xml_node);
	while (cIter) {
	xmlNode *child = cIter;

	cIter = pcmk__xml_next(cIter);
	if (can_prune_leaf(child)) {
	free_xml(child);
	} else {
	can_prune = FALSE;
	}
	}
	return can_prune;
	}

	/*!
	* \internal
	* \brief Find a comment with matching content in specified XML
	*
	* \param[in] root XML to search
	* \param[in] search_comment Comment whose content should be searched for
	* \param[in] exact If true, comment must also be at same position
	*/
	xmlNode *
	pcmk__xc_match(const xmlNode root, const xmlNode search_comment, bool exact)
	{
	xmlNode *a_child = NULL;
	int search_offset = pcmk__xml_position(search_comment, pcmk__xf_skip);

	CRM_CHECK(search_comment->type == XML_COMMENT_NODE, return NULL);

	for (a_child = pcmk__xml_first_child(root); a_child != NULL;
	a_child = pcmk__xml_next(a_child)) {
	if (exact) {
	int offset = pcmk__xml_position(a_child, pcmk__xf_skip);
	xml_node_private_t *nodepriv = a_child->_private;

	if (offset < search_offset) {
	continue;

	} else if (offset > search_offset) {
	return NULL;
	}

	if (pcmk_is_set(nodepriv->flags, pcmk__xf_skip)) {
	continue;
	}
	}

	if (a_child->type == XML_COMMENT_NODE
	&& pcmk__str_eq((const char )a_child->content, (const char )search_comment->content, pcmk__str_casei)) {
	return a_child;

	} else if (exact) {
	return NULL;
	}
	}

	return NULL;
	}

	/*!
	* \internal
	* \brief Make one XML comment match another (in content)
	*
	* \param[in,out] parent If \p target is NULL and this is not, add or update
	* comment child of this XML node that matches \p update
	* \param[in,out] target If not NULL, update this XML comment node
	* \param[in] update Make comment content match this (must not be NULL)
	*
	* \note At least one of \parent and \target must be non-NULL
	*/
	void
	pcmk__xc_update(xmlNode parent, xmlNode target, xmlNode *update)
	{
	CRM_CHECK(update != NULL, return);
	CRM_CHECK(update->type == XML_COMMENT_NODE, return);

	if (target == NULL) {
	target = pcmk__xc_match(parent, update, false);
	}

	if (target == NULL) {
	add_node_copy(parent, update);

	} else if (!pcmk__str_eq((const char )target->content, (const char )update->content, pcmk__str_casei)) {
	xmlFree(target->content);
	target->content = xmlStrdup(update->content);
	}
	}

	/*!
	* \internal
	* \brief Make one XML tree match another (in children and attributes)
	*
	* \param[in,out] parent If \p target is NULL and this is not, add or update
	* child of this XML node that matches \p update
	* \param[in,out] target If not NULL, update this XML
	* \param[in] update Make the desired XML match this (must not be NULL)
	* \param[in] as_diff If false, expand "++" when making attributes match
	*
	* \note At least one of \p parent and \p target must be non-NULL
	*/
	void
	pcmk__xml_update(xmlNode parent, xmlNode target, xmlNode *update,
	bool as_diff)
	{
	xmlNode *a_child = NULL;
	const char *object_name = NULL,
	*object_href = NULL,
	*object_href_val = NULL;

	#if XML_PARSER_DEBUG
	crm_log_xml_trace(update, "update:");
	crm_log_xml_trace(target, "target:");
	#endif

	CRM_CHECK(update != NULL, return);

	if (update->type == XML_COMMENT_NODE) {
	pcmk__xc_update(parent, target, update);
	return;
	}

	object_name = crm_element_name(update);
	object_href_val = ID(update);
	if (object_href_val != NULL) {
	object_href = XML_ATTR_ID;
	} else {
	object_href_val = crm_element_value(update, XML_ATTR_IDREF);
	object_href = (object_href_val == NULL) ? NULL : XML_ATTR_IDREF;
	}

	CRM_CHECK(object_name != NULL, return);
	CRM_CHECK(target != NULL \|\| parent != NULL, return);

	if (target == NULL) {
	target = pcmk__xe_match(parent, object_name,
	object_href, object_href_val);
	}

	if (target == NULL) {
	target = create_xml_node(parent, object_name);
	CRM_CHECK(target != NULL, return);
	#if XML_PARSER_DEBUG
	crm_trace("Added <%s%s%s%s%s/>", pcmk__s(object_name, "<null>"),
	object_href ? " " : "",
	object_href ? object_href : "",
	object_href ? "=" : "",
	object_href ? object_href_val : "");

	} else {
	crm_trace("Found node <%s%s%s%s%s/> to update",
	pcmk__s(object_name, "<null>"),
	object_href ? " " : "",
	object_href ? object_href : "",
	object_href ? "=" : "",
	object_href ? object_href_val : "");
	#endif
	}

	CRM_CHECK(pcmk__str_eq(crm_element_name(target), crm_element_name(update),
	pcmk__str_casei),
	return);

	if (as_diff == FALSE) {
	/* So that expand_plus_plus() gets called */
	copy_in_properties(target, update);

	} else {
	/* No need for expand_plus_plus(), just raw speed */
	for (xmlAttrPtr a = pcmk__xe_first_attr(update); a != NULL;
	a = a->next) {
	const char *p_value = pcmk__xml_attr_value(a);

	/* Remove it first so the ordering of the update is preserved */
	xmlUnsetProp(target, a->name);
	xmlSetProp(target, a->name, (pcmkXmlStr) p_value);
	}
	}

	for (a_child = pcmk__xml_first_child(update); a_child != NULL;
	a_child = pcmk__xml_next(a_child)) {
	#if XML_PARSER_DEBUG
	crm_trace("Updating child <%s%s%s%s%s/>",
	pcmk__s(object_name, "<null>"),
	object_href ? " " : "",
	object_href ? object_href : "",
	object_href ? "=" : "",
	object_href ? object_href_val : "");
	#endif
	pcmk__xml_update(target, NULL, a_child, as_diff);
	}

	#if XML_PARSER_DEBUG
	crm_trace("Finished with <%s%s%s%s%s/>", pcmk__s(object_name, "<null>"),
	object_href ? " " : "",
	object_href ? object_href : "",
	object_href ? "=" : "",
	object_href ? object_href_val : "");
	#endif
	}

	gboolean
	update_xml_child(xmlNode * child, xmlNode * to_update)
	{
	gboolean can_update = TRUE;
	xmlNode *child_of_child = NULL;

	CRM_CHECK(child != NULL, return FALSE);
	CRM_CHECK(to_update != NULL, return FALSE);

	if (!pcmk__str_eq(crm_element_name(to_update), crm_element_name(child), pcmk__str_none)) {
	can_update = FALSE;

	} else if (!pcmk__str_eq(ID(to_update), ID(child), pcmk__str_none)) {
	can_update = FALSE;

	} else if (can_update) {
	#if XML_PARSER_DEBUG
	crm_log_xml_trace(child, "Update match found...");
	#endif
	pcmk__xml_update(NULL, child, to_update, false);
	}

	for (child_of_child = pcmk__xml_first_child(child); child_of_child != NULL;
	child_of_child = pcmk__xml_next(child_of_child)) {
	/* only update the first one */
	if (can_update) {
	break;
	}
	can_update = update_xml_child(child_of_child, to_update);
	}

	return can_update;
	}

	int
	find_xml_children(xmlNode ** children, xmlNode * root,
	const char tag, const char field, const char *value, gboolean search_matches)
	{
	int match_found = 0;

	CRM_CHECK(root != NULL, return FALSE);
	CRM_CHECK(children != NULL, return FALSE);

	if (tag != NULL && !pcmk__str_eq(tag, crm_element_name(root), pcmk__str_casei)) {

	} else if (value != NULL && !pcmk__str_eq(value, crm_element_value(root, field), pcmk__str_casei)) {

	} else {
	if (*children == NULL) {
	*children = create_xml_node(NULL, __func__);
	}
	add_node_copy(*children, root);
	match_found = 1;
	}

	if (search_matches \|\| match_found == 0) {
	xmlNode *child = NULL;

	for (child = pcmk__xml_first_child(root); child != NULL;
	child = pcmk__xml_next(child)) {
	match_found += find_xml_children(children, child, tag, field, value, search_matches);
	}
	}

	return match_found;
	}

	gboolean
	replace_xml_child(xmlNode * parent, xmlNode * child, xmlNode * update, gboolean delete_only)
	{
	gboolean can_delete = FALSE;
	xmlNode *child_of_child = NULL;

	const char *up_id = NULL;
	const char *child_id = NULL;
	const char *right_val = NULL;

	CRM_CHECK(child != NULL, return FALSE);
	CRM_CHECK(update != NULL, return FALSE);

	up_id = ID(update);
	child_id = ID(child);

	if (up_id == NULL \|\| (child_id && strcmp(child_id, up_id) == 0)) {
	can_delete = TRUE;
	}
	if (!pcmk__str_eq(crm_element_name(update), crm_element_name(child), pcmk__str_casei)) {
	can_delete = FALSE;
	}
	if (can_delete && delete_only) {
	for (xmlAttrPtr a = pcmk__xe_first_attr(update); a != NULL;
	a = a->next) {
	const char p_name = (const char ) a->name;
	const char *p_value = pcmk__xml_attr_value(a);

	right_val = crm_element_value(child, p_name);
	if (!pcmk__str_eq(p_value, right_val, pcmk__str_casei)) {
	can_delete = FALSE;
	}
	}
	}

	if (can_delete && parent != NULL) {
	crm_log_xml_trace(child, "Delete match found...");
	if (delete_only \|\| update == NULL) {
	free_xml(child);

	} else {
	xmlNode *tmp = copy_xml(update);
	xmlDoc *doc = tmp->doc;
	xmlNode *old = NULL;

	xml_accept_changes(tmp);
	old = xmlReplaceNode(child, tmp);

	if(xml_tracking_changes(tmp)) {
	/* Replaced sections may have included relevant ACLs */
	pcmk__apply_acl(tmp);
	}

	xml_calculate_changes(old, tmp);
	xmlDocSetRootElement(doc, old);
	free_xml(old);
	}
	child = NULL;
	return TRUE;

	} else if (can_delete) {
	crm_log_xml_debug(child, "Cannot delete the search root");
	can_delete = FALSE;
	}

	child_of_child = pcmk__xml_first_child(child);
	while (child_of_child) {
	xmlNode *next = pcmk__xml_next(child_of_child);

	can_delete = replace_xml_child(child, child_of_child, update, delete_only);

	/* only delete the first one */
	if (can_delete) {
	child_of_child = NULL;
	} else {
	child_of_child = next;
	}
	}

	return can_delete;
	}

	xmlNode *
	sorted_xml(xmlNode input, xmlNode parent, gboolean recursive)
	{
	xmlNode *child = NULL;
	GSList *nvpairs = NULL;
	xmlNode *result = NULL;
	const char *name = NULL;

	CRM_CHECK(input != NULL, return NULL);

	name = crm_element_name(input);
	CRM_CHECK(name != NULL, return NULL);

	result = create_xml_node(parent, name);
	nvpairs = pcmk_xml_attrs2nvpairs(input);
	nvpairs = pcmk_sort_nvpairs(nvpairs);
	pcmk_nvpairs2xml_attrs(nvpairs, result);
	pcmk_free_nvpairs(nvpairs);

	for (child = pcmk__xml_first_child(input); child != NULL;
	child = pcmk__xml_next(child)) {

	if (recursive) {
	sorted_xml(child, result, recursive);
	} else {
	add_node_copy(result, child);
	}
	}

	return result;
	}

	xmlNode *
	first_named_child(const xmlNode parent, const char name)
	{
	xmlNode *match = NULL;

	for (match = pcmk__xe_first_child(parent); match != NULL;
	match = pcmk__xe_next(match)) {
	/*
	* name == NULL gives first child regardless of name; this is
	* semantically incorrect in this function, but may be necessary
	* due to prior use of xml_child_iter_filter
	*/
	if (pcmk__str_eq(name, (const char *)match->name, pcmk__str_null_matches)) {
	return match;
	}
	}
	return NULL;
	}

	/*!
	* \brief Get next instance of same XML tag
	*
	* \param[in] sibling XML tag to start from
	*
	* \return Next sibling XML tag with same name
	*/
	xmlNode *
	crm_next_same_xml(const xmlNode *sibling)
	{
	xmlNode *match = pcmk__xe_next(sibling);
	const char *name = crm_element_name(sibling);

	while (match != NULL) {
	if (!strcmp(crm_element_name(match), name)) {
	return match;
	}
	match = pcmk__xe_next(match);
	}
	return NULL;
	}

	void
	crm_xml_init(void)
	{
	static bool init = true;

	if(init) {
	init = false;
	/* The default allocator XML_BUFFER_ALLOC_EXACT does far too many
	* pcmk__realloc()s and it can take upwards of 18 seconds (yes, seconds)
	* to dump a 28kb tree which XML_BUFFER_ALLOC_DOUBLEIT can do in
	* less than 1 second.
	*/
	xmlSetBufferAllocationScheme(XML_BUFFER_ALLOC_DOUBLEIT);

	/* Populate and free the _private field when nodes are created and destroyed */
	xmlDeregisterNodeDefault(free_private_data);
	xmlRegisterNodeDefault(new_private_data);

	crm_schema_init();
	}
	}

	void
	crm_xml_cleanup(void)
	{
	crm_schema_cleanup();
	xmlCleanupParser();
	}

	#define XPATH_MAX 512

	xmlNode *
	expand_idref(xmlNode * input, xmlNode * top)
	{
	const char *tag = NULL;
	const char *ref = NULL;
	xmlNode *result = input;

	if (result == NULL) {
	return NULL;

	} else if (top == NULL) {
	top = input;
	}

	tag = crm_element_name(result);
	ref = crm_element_value(result, XML_ATTR_IDREF);

	if (ref != NULL) {
	char *xpath_string = crm_strdup_printf("//%s[@" XML_ATTR_ID "='%s']",
	tag, ref);

	result = get_xpath_object(xpath_string, top, LOG_ERR);
	if (result == NULL) {
	char nodePath = (char )xmlGetNodePath(top);

	crm_err("No match for %s found in %s: Invalid configuration",
	xpath_string, pcmk__s(nodePath, "unrecognizable path"));
	free(nodePath);
	}
	free(xpath_string);
	}
	return result;
	}

	char *
	pcmk__xml_artefact_root(enum pcmk__xml_artefact_ns ns)
	{
	static const char *base = NULL;
	char *ret = NULL;

	if (base == NULL) {
	base = getenv("PCMK_schema_directory");
	}
	if (pcmk__str_empty(base)) {
	base = CRM_SCHEMA_DIRECTORY;
	}

	switch (ns) {
	case pcmk__xml_artefact_ns_legacy_rng:
	case pcmk__xml_artefact_ns_legacy_xslt:
	ret = strdup(base);
	break;
	case pcmk__xml_artefact_ns_base_rng:
	case pcmk__xml_artefact_ns_base_xslt:
	ret = crm_strdup_printf("%s/base", base);
	break;
	default:
	crm_err("XML artefact family specified as %u not recognized", ns);
	}
	return ret;
	}

	char *
	pcmk__xml_artefact_path(enum pcmk__xml_artefact_ns ns, const char *filespec)
	{
	char base = pcmk__xml_artefact_root(ns), ret = NULL;

	switch (ns) {
	case pcmk__xml_artefact_ns_legacy_rng:
	case pcmk__xml_artefact_ns_base_rng:
	ret = crm_strdup_printf("%s/%s.rng", base, filespec);
	break;
	case pcmk__xml_artefact_ns_legacy_xslt:
	case pcmk__xml_artefact_ns_base_xslt:
	ret = crm_strdup_printf("%s/%s.xsl", base, filespec);
	break;
	default:
	crm_err("XML artefact family specified as %u not recognized", ns);
	}
	free(base);

	return ret;
	}

	void
	pcmk__xe_set_propv(xmlNodePtr node, va_list pairs)
	{
	while (true) {
	const char name, value;

	name = va_arg(pairs, const char *);
	if (name == NULL) {
	return;
	}

	value = va_arg(pairs, const char *);
	if (value != NULL) {
	crm_xml_add(node, name, value);
	}
	}
	}

	void
	pcmk__xe_set_props(xmlNodePtr node, ...)
	{
	va_list pairs;
	va_start(pairs, node);
	pcmk__xe_set_propv(node, pairs);
	va_end(pairs);
	}

	int
	pcmk__xe_foreach_child(xmlNode xml, const char child_element_name,
	int (handler)(xmlNode xml, void *userdata),
	void *userdata)
	{
	xmlNode *children = (xml? xml->children : NULL);

	CRM_ASSERT(handler != NULL);

	for (xmlNode *node = children; node != NULL; node = node->next) {
	if (node->type == XML_ELEMENT_NODE &&
	pcmk__str_eq(child_element_name, (const char *) node->name, pcmk__str_null_matches)) {
	int rc = handler(node, userdata);

	if (rc != pcmk_rc_ok) {
	return rc;
	}
	}
	}

	return pcmk_rc_ok;
	}

	// Deprecated functions kept only for backward API compatibility
	// LCOV_EXCL_START

	#include <crm/common/xml_compat.h>

	xmlNode *
	find_entity(xmlNode parent, const char node_name, const char *id)
	{
	return pcmk__xe_match(parent, node_name,
	((id == NULL)? id : XML_ATTR_ID), id);
	}

	void
	crm_destroy_xml(gpointer data)
	{
	free_xml(data);
	}

	int
	add_node_nocopy(xmlNode parent, const char name, xmlNode *child)
	{
	add_node_copy(parent, child);
	free_xml(child);
	return 1;
	}

	// LCOV_EXCL_STOP
	// End deprecated API
	diff --git a/lib/common/xml_attr.c b/lib/common/xml_attr.c
	new file mode 100644
	index 0000000000..427d2675bc
	--- /dev/null
	+++ b/lib/common/xml_attr.c
	@@ -0,0 +1,84 @@
	+/*
	+ * Copyright 2004-2023 the Pacemaker project contributors
	+ *
	+ * The version control history for this file may have further details.
	+ *
	+ * This source code is licensed under the GNU Lesser General Public License
	+ * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	+ */
	+
	+#include <crm_internal.h>
	+
	+#include <stdio.h>
	+#include <sys/types.h>
	+#include <unistd.h>
	+#include <time.h>
	+#include <string.h>
	+#include <stdlib.h>
	+#include <stdarg.h>
	+#include <bzlib.h>
	+
	+#include <libxml/parser.h>
	+#include <libxml/tree.h>
	+#include <libxml/xmlIO.h> /* xmlAllocOutputBuffer */
	+
	+#include <crm/crm.h>
	+#include <crm/msg_xml.h>
	+#include <crm/common/xml.h>
	+#include <crm/common/xml_internal.h> // PCMK__XML_LOG_BASE, etc.
	+#include "crmcommon_private.h"
	+
	+void
	+pcmk__mark_xml_attr_dirty(xmlAttr *a)
	+{
	+ xmlNode *parent = a->parent;
	+ xml_node_private_t *nodepriv = a->_private;
	+
	+ pcmk__set_xml_flags(nodepriv, pcmk__xf_dirty\|pcmk__xf_modified);
	+ pcmk__clear_xml_flags(nodepriv, pcmk__xf_deleted);
	+ pcmk__mark_xml_node_dirty(parent);
	+}
	+
	+// This also clears attribute's flags if not marked as deleted
	+bool
	+pcmk__marked_as_deleted(xmlAttrPtr a, void *user_data)
	+{
	+ xml_node_private_t *nodepriv = a->_private;
	+
	+ if (pcmk_is_set(nodepriv->flags, pcmk__xf_deleted)) {
	+ return true;
	+ }
	+ nodepriv->flags = pcmk__xf_none;
	+ return false;
	+}
	+
	+/*!
	+ * \internal
	+ * \brief Append an XML attribute to a buffer
	+ *
	+ * \param[in] attr Attribute to append
	+ * \param[in,out] buffer Where to append the content (must not be \p NULL)
	+ */
	+void
	+pcmk__dump_xml_attr(const xmlAttr attr, GString buffer)
	+{
	+ char *p_value = NULL;
	+ const char *p_name = NULL;
	+ xml_node_private_t *nodepriv = NULL;
	+
	+ if (attr == NULL \|\| attr->children == NULL) {
	+ return;
	+ }
	+
	+ nodepriv = attr->_private;
	+ if (nodepriv && pcmk_is_set(nodepriv->flags, pcmk__xf_deleted)) {
	+ return;
	+ }
	+
	+ p_name = (const char *) attr->name;
	+ p_value = crm_xml_escape((const char *)attr->children->content);
	+ pcmk__g_strcat(buffer, " ", p_name, "=\"", pcmk__s(p_value, "<null>"), "\"",
	+ NULL);
	+
	+ free(p_value);
	+}
	\ No newline at end of file

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