Here is a list of all files with brief descriptions:

[detail level 12345]

▼ include
► crm
► cib
cib_types.h	Data types for Cluster Information Base access
internal.h
util.h
util_compat.h	Deprecated Pacemaker configuration utilities
► cluster
compat.h	Deprecated Pacemaker cluster API
election_internal.h	Functions for conducting elections
internal.h
► common
acl.h	Low-level API for XML Access Control Lists (ACLs)
acl_internal.h
agents.h	API related to resource agents
agents_compat.h	Deprecated Pacemaker resource agent API
alerts_internal.h
attrd_internal.h
cib.h
cmdline_internal.h
health_internal.h
internal.h
io_internal.h
ipc.h	IPC interface to Pacemaker daemons
ipc_attrd_internal.h
ipc_controld.h	IPC commands for Pacemaker controller
ipc_internal.h
ipc_pacemakerd.h	IPC commands for Pacemakerd
ipc_schedulerd.h	IPC commands for Schedulerd
iso8601.h	ISO_8601 Date handling
iso8601_internal.h
lists_internal.h
logging.h	Wrappers for and extensions to libqb logging
logging_compat.h	Deprecated Pacemaker logging API
logging_internal.h
mainloop.h	Wrappers for and extensions to glib mainloop
mainloop_compat.h	Deprecated Pacemaker mainloop API
messages_internal.h
nvpair.h	Functionality for manipulating name/value pairs
options_internal.h
output.h	Control output from tools
output_internal.h	Formatted output for pacemaker tools
remote_internal.h
results.h	Function and executable result codes
results_compat.h	Deprecated Pacemaker results API
results_internal.h
strings_internal.h
unittest_internal.h
util.h	Utility functions
util_compat.h	Deprecated Pacemaker utilities
xml.h	Wrappers for and extensions to libxml2
xml_compat.h	Deprecated Pacemaker XML API
xml_internal.h
► fencing
internal.h
► pengine
common.h
common_compat.h	Deprecated Pacemaker scheduler utilities
complex.h
internal.h
pe_types.h	Data types for cluster status
pe_types_compat.h	Deprecated Pacemaker scheduler API
remote_internal.h
rules.h
rules_compat.h	Deprecated Pacemaker rule API
rules_internal.h
status.h	Cluster status and scheduling
cib.h	Cluster Configuration
cluster.h
compatibility.h
crm.h	A dumping ground
crm_compat.h	Deprecated Pacemaker utilities
lrmd.h	Resource agent executor
lrmd_internal.h
msg_xml.h
msg_xml_compat.h	Deprecated Pacemaker XML constants API
services.h	Services API
services_compat.h	Deprecated services API
services_internal.h
stonith-ng.h	Fencing aka. STONITH
► pcmki
pcmki_acl.h
pcmki_cluster_queries.h
pcmki_fence.h
pcmki_output.h
pcmki_resource.h
pcmki_result_code.h
pcmki_rule.h
pcmki_sched_allocate.h
pcmki_sched_utils.h
pcmki_scheduler.h
pcmki_simulate.h
pcmki_status.h
pcmki_transition.h
config.h
crm_config.h
crm_internal.h
doxygen.h	Fake header file that contains doxygen documentation
gettext.h
pacemaker-internal.h
pacemaker.h	High Level API
portability.h
▼ lib
► cib
cib_attrs.c
cib_client.c
cib_file.c
cib_native.c
cib_ops.c
cib_remote.c
cib_utils.c
► cluster
cluster.c
corosync.c
cpg.c
crmcluster_private.h
election.c
membership.c
► common
► tests
► acl
pcmk__is_user_in_group_test.c
pcmk_acl_required_test.c
xml_acl_denied_test.c
xml_acl_enabled_test.c
► agents
crm_generate_ra_key_test.c
crm_parse_agent_spec_test.c
pcmk__effective_rc_test.c
pcmk_get_ra_caps_test.c
pcmk_stonith_param_test.c
► cmdline
pcmk__cmdline_preproc_test.c
pcmk__quote_cmdline_test.c
► flags
pcmk__clear_flags_as_test.c
pcmk__set_flags_as_test.c
pcmk_all_flags_set_test.c
pcmk_any_flags_set_test.c
► health
pcmk__parse_health_strategy_test.c
pcmk__validate_health_strategy_test.c
► io
pcmk__full_path_test.c
pcmk__get_tmpdir_test.c
► iso8601
pcmk__readable_interval_test.c
► lists
pcmk__list_of_1_test.c
pcmk__list_of_multiple_test.c
pcmk__subtract_lists_test.c
► nvpair
pcmk__xe_attr_is_true_test.c
pcmk__xe_get_bool_attr_test.c
pcmk__xe_set_bool_attr_test.c
► operations
copy_in_properties_test.c
expand_plus_plus_test.c
fix_plus_plus_recursive_test.c
parse_op_key_test.c
pcmk_is_probe_test.c
pcmk_xe_is_probe_test.c
pcmk_xe_mask_probe_failure_test.c
► options
pcmk__env_option_enabled_test.c
pcmk__env_option_test.c
pcmk__set_env_option_test.c
► output
pcmk__call_message_test.c
pcmk__output_and_clear_error_test.c
pcmk__output_free_test.c
pcmk__output_new_test.c
pcmk__register_format_test.c
pcmk__register_formats_test.c
pcmk__register_message_test.c
pcmk__register_messages_test.c
pcmk__unregister_formats_test.c
► procfs
pcmk__procfs_has_pids_false_test.c
pcmk__procfs_has_pids_true_test.c
pcmk__procfs_pid2path_test.c
► results
pcmk__results_test.c
► scores
char2score_test.c
pcmk__add_scores_test.c
pcmk_readable_score_test.c
► strings
crm_get_msec_test.c
crm_is_true_test.c
crm_str_to_boolean_test.c
pcmk__add_word_test.c
pcmk__btoa_test.c
pcmk__char_in_any_str_test.c
pcmk__compress_test.c
pcmk__ends_with_test.c
pcmk__g_strcat_test.c
pcmk__guint_from_hash_test.c
pcmk__numeric_strcasecmp_test.c
pcmk__parse_ll_range_test.c
pcmk__s_test.c
pcmk__scan_double_test.c
pcmk__scan_min_int_test.c
pcmk__scan_port_test.c
pcmk__starts_with_test.c
pcmk__str_any_of_test.c
pcmk__str_in_list_test.c
pcmk__str_table_dup_test.c
pcmk__str_update_test.c
pcmk__strcmp_test.c
pcmk__strikey_table_test.c
pcmk__strkey_table_test.c
pcmk__trim_test.c
► utils
compare_version_test.c
crm_meta_name_test.c
crm_meta_value_test.c
crm_user_lookup_test.c
pcmk__getpid_s_test.c
pcmk_daemon_user_test.c
pcmk_hostname_test.c
pcmk_str_is_infinity_test.c
pcmk_str_is_minus_infinity_test.c
► xml
pcmk__xe_foreach_child_test.c
pcmk__xe_match_test.c
► xpath
pcmk__xpath_node_id_test.c
acl.c
agents.c
alerts.c
attrs.c
cib.c
cib_secrets.c
cmdline.c
crmcommon_private.h
digest.c
health.c
io.c
ipc_attrd.c
ipc_client.c
ipc_common.c
ipc_controld.c
ipc_pacemakerd.c
ipc_schedulerd.c
ipc_server.c
iso8601.c
lists.c
logging.c
mainloop.c
messages.c
mock.c
mock_private.h
nodes.c
nvpair.c
operations.c
options.c
output.c
output_html.c
output_log.c
output_none.c
output_text.c
output_xml.c
patchset.c
patchset_display.c
pid.c
procfs.c
remote.c
results.c
schemas.c
scores.c
strings.c
utils.c
watchdog.c
xml.c
xml_display.c
xpath.c
► fencing
fencing_private.h
st_actions.c
st_client.c
st_lha.c
st_output.c
st_rhcs.c
► gnu
byteswap.in.h
gl_openssl.h
md5.c
md5.h
stdalign.in.h
► lrmd
lrmd_alerts.c
lrmd_client.c
lrmd_output.c
proxy_common.c
► pacemaker
libpacemaker_private.h
pcmk_acl.c
pcmk_cluster_queries.c
pcmk_fence.c
pcmk_graph_consumer.c
pcmk_graph_logging.c
pcmk_graph_producer.c
pcmk_injections.c
pcmk_output.c
pcmk_resource.c
pcmk_result_code.c
pcmk_rule.c
pcmk_sched_actions.c
pcmk_sched_bundle.c
pcmk_sched_clone.c
pcmk_sched_colocation.c
pcmk_sched_constraints.c
pcmk_sched_fencing.c
pcmk_sched_group.c
pcmk_sched_instances.c
pcmk_sched_location.c
pcmk_sched_migration.c
pcmk_sched_nodes.c
pcmk_sched_ordering.c
pcmk_sched_primitive.c
pcmk_sched_probes.c
pcmk_sched_promotable.c
pcmk_sched_recurring.c
pcmk_sched_remote.c
pcmk_sched_resource.c
pcmk_sched_tickets.c
pcmk_sched_utilization.c
pcmk_scheduler.c
pcmk_simulate.c
pcmk_status.c
► pengine
► tests
► native
native_find_rsc_test.c
pe_base_name_eq_test.c
► rules
pe_cron_range_satisfied_test.c
► status
pe_find_node_any_test.c
pe_find_node_id_test.c
pe_find_node_test.c
pe_new_working_set_test.c
set_working_set_defaults_test.c
► unpack
pe_base_name_end_test.c
► utils
pe__cmp_node_name_test.c
pe__cmp_rsc_priority_test.c
bundle.c
clone.c
common.c
complex.c
failcounts.c
group.c
native.c
pe_actions.c
pe_digest.c
pe_health.c
pe_notif.c
pe_output.c
pe_status_private.h
remote.c
rules.c
rules_alerts.c
status.c
tags.c
unpack.c
utils.c
variant.h
► services
dbus.c
pcmk-dbus.h
services.c
services_linux.c
services_lsb.c
services_lsb.h
services_nagios.c
services_nagios.h
services_ocf.c
services_ocf.h
services_private.h
systemd.c
systemd.h
upstart.c
upstart.h