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xen/tools/flask/policy/Makefile.common
T
Anthony PERARD ab4a83023e build: add --full to version.sh to guess $(XEN_FULLVERSION)
Running $(MAKE) like that in a $(shell ) while parsing the Makefile
doesn't work reliably. In some case, make will complain with
"jobserver unavailable: using -j1.  Add '+' to parent make rule.".
Also, it isn't possible to distinguish between the output produced by
the target "xenversion" and `make`'s own output.

Instead of running make, this patch "improve" `version.sh` to try to
guess the output of `make xenversion`.

In order to have version.sh works in more scenario, it will use
XEN_EXTRAVERSION and XEN_VENDORVERSION from the environment when
present. As for the cases were those two variables are overridden by a
make command line arguments, we export them when invoking version.sh
via a new $(XEN_FULLVERSION) macro.

That should hopefully get us to having ./version.sh returning the same
value that `make xenversion` would.

This fix GitLab CI's build job "debian-unstable-gcc-arm64".

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Daniel P. Smith <dpsmith@apertussolutions.com>
Reviewed-by: Ian Jackson <iwj@xenproject.org>
2021-09-29 15:29:55 +01:00

136 lines
4.0 KiB
Makefile

# This file is referenced by both hypervisor build and tools build
# so there shouldn't be any tools specific things here.
XEN_ROOT=$(CURDIR)/../../..
ifeq ($(FLASK_BUILD_DIR),)
$(error FLASK_BUILD_DIR not set)
endif
########################################
#
# Configurable portions of the Makefile
#
########################################
CONFIG_MLS ?= n
# Number of available MLS sensitivities and categories.
# The sensitivities will be s0 to s(MLS_SENS-1). Dominance will be in
# increasing numerical order with s0 being lowest.
MLS_SENS ?= 16
# The categories will be c0 to c(MLS_CATS-1).
MLS_CATS ?= 256
# executable paths
CHECKPOLICY ?= checkpolicy
M4 ?= m4
# Output security policy version. Leave unset to autodetect.
OUTPUT_POLICY ?= $(BEST_POLICY_VER)
########################################
#
# End of configuration options
#
########################################
POLICY_FILENAME = $(FLASK_BUILD_DIR)/xenpolicy-$(XEN_FULLVERSION)
POLICY_LOADPATH = /boot
# List of policy versions supported by the hypervisor
POLICY_VER_LIST_HV = 24 30
# policy source layout
POLDIR := policy
MODDIR := modules
# Classes and access vectors defined in the hypervisor. Changes to these require
# a recompile of both the hypervisor and security policy.
FLASKDIR := ../../../xen/xsm/flask/policy
SECCLASS := $(FLASKDIR)/security_classes
ISID_DECLS := $(FLASKDIR)/initial_sids
AVS := $(FLASKDIR)/access_vectors
# Additional classes and access vectors defined by local policy
SECCLASS += $(POLDIR)/security_classes
AVS += $(POLDIR)/access_vectors
# Other policy components
M4SUPPORT := $(wildcard $(POLDIR)/support/*.spt)
MLSSUPPORT := $(POLDIR)/mls
USERS := $(POLDIR)/users
ISID_DEFS := $(POLDIR)/initial_sids
DEV_OCONS := $(POLDIR)/device_contexts
# config file paths
GLOBALTUN := $(POLDIR)/global_tunables
MOD_CONF := $(MODDIR)/modules.conf
# checkpolicy can use the #line directives provided by -s for error reporting:
M4PARAM := -D self_contained_policy -s
# The output of checkpolicy -V is "30 (compatibility range 30-15)", and the
# first word of the output is the maximum policy version supported.
CHECKPOLICY_VER_MAX := $(firstword $(shell $(CHECKPOLICY) -V))
# Find the highest version supported by both the hypervisor and checkpolicy
BEST_POLICY_VER := $(shell best=24; for ver in $(POLICY_VER_LIST_HV); do if test $$ver -le $(CHECKPOLICY_VER_MAX); then best=$$ver; fi; done; echo $$best)
CHECKPOLICY_PARAM := -t Xen -c $(OUTPUT_POLICY)
# enable MLS if requested.
ifneq ($(CONFIG_MLS),n)
M4PARAM += -D enable_mls
CHECKPOLICY_PARAM += -M
endif
# Always define these because they are referenced even in non-MLS policy
M4PARAM += -D mls_num_sens=$(MLS_SENS) -D mls_num_cats=$(MLS_CATS)
# modules.conf setting for policy configuration
MODENABLED := on
# extract settings from modules.conf
ENABLED_LIST := $(shell awk '/^[ \t]*[a-z]/{ if ($$3 == "$(MODENABLED)") print $$1 }' $(MOD_CONF) 2> /dev/null)
# Modules must provide a .te file, although it could be empty
ALL_MODULES := $(foreach mod,$(ENABLED_LIST),$(MODDIR)/$(mod).te)
# Modules may also provide interfaces and constraint definitions
ALL_INTERFACES := $(wildcard $(ALL_MODULES:.te=.if))
ALL_CONSTRAINTS := $(wildcard $(ALL_MODULES:.te=.cons))
# The order of these files is important
POLICY_SECTIONS := $(SECCLASS) $(ISID_DECLS) $(AVS)
POLICY_SECTIONS += $(M4SUPPORT) $(MLSSUPPORT)
POLICY_SECTIONS += $(ALL_INTERFACES)
POLICY_SECTIONS += $(GLOBALTUN)
POLICY_SECTIONS += $(ALL_MODULES)
POLICY_SECTIONS += $(USERS)
POLICY_SECTIONS += $(ALL_CONSTRAINTS)
POLICY_SECTIONS += $(ISID_DEFS) $(DEV_OCONS)
all: $(POLICY_FILENAME)
install: $(POLICY_FILENAME)
$(INSTALL_DIR) $(DESTDIR)/$(POLICY_LOADPATH)
$(INSTALL_DATA) $^ $(DESTDIR)/$(POLICY_LOADPATH)
uninstall:
rm -f $(DESTDIR)/$(POLICY_LOADPATH)/$(POLICY_FILENAME)
$(POLICY_FILENAME): $(FLASK_BUILD_DIR)/policy.conf
$(CHECKPOLICY) $(CHECKPOLICY_PARAM) $^ -o $@
$(FLASK_BUILD_DIR)/policy.conf: $(POLICY_SECTIONS) $(MOD_CONF)
$(M4) $(M4PARAM) $(POLICY_SECTIONS) > $@
clean:
$(RM) $(FLASK_BUILD_DIR)/policy.conf $(POLICY_FILENAME)
distclean: clean
.PHONY: all install clean distclean uninstall