# # Makefile for the linux kernel. # obj-y = fork.o exec_domain.o panic.o \ cpu.o exit.o itimer.o time.o softirq.o resource.o \ sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o \ signal.o sys.o kmod.o workqueue.o pid.o task_work.o \ extable.o params.o posix-timers.o \ kthread.o sys_ni.o posix-cpu-timers.o \ hrtimer.o nsproxy.o \ notifier.o ksysfs.o cred.o reboot.o \ async.o range.o groups.o smpboot.o ifdef CONFIG_FUNCTION_TRACER # Do not trace debug files and internal ftrace files CFLAGS_REMOVE_cgroup-debug.o = -pg CFLAGS_REMOVE_irq_work.o = -pg endif obj-y += sched/ obj-y += locking/ obj-y += power/ obj-y += printk/ obj-y += irq/ obj-y += rcu/ obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o obj-$(CONFIG_FREEZER) += freezer.o obj-$(CONFIG_PROFILING) += profile.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-y += time/ obj-$(CONFIG_FUTEX) += futex.o ifeq ($(CONFIG_COMPAT),y) obj-$(CONFIG_FUTEX) += futex_compat.o endif obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o obj-$(CONFIG_SMP) += smp.o ifneq ($(CONFIG_SMP),y) obj-y += up.o endif obj-$(CONFIG_UID16) += uid16.o obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_MODULE_SIG) += module_signing.o obj-$(CONFIG_KALLSYMS) += kallsyms.o obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o obj-$(CONFIG_KEXEC) += kexec.o obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o obj-$(CONFIG_COMPAT) += compat.o obj-$(CONFIG_CGROUPS) += cgroup.o obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o obj-$(CONFIG_CPUSETS) += cpuset.o obj-$(CONFIG_UTS_NS) += utsname.o obj-$(CONFIG_USER_NS) += user_namespace.o obj-$(CONFIG_PID_NS) += pid_namespace.o obj-$(CONFIG_IKCONFIG) += configs.o obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o obj-$(CONFIG_SMP) += stop_machine.o obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o obj-$(CONFIG_AUDIT) += audit.o auditfilter.o obj-$(CONFIG_AUDITSYSCALL) += auditsc.o obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o obj-$(CONFIG_AUDIT_TREE) += audit_tree.o obj-$(CONFIG_GCOV_KERNEL) += gcov/ obj-$(CONFIG_KPROBES) += kprobes.o obj-$(CONFIG_KGDB) += debug/ obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o obj-$(CONFIG_SECCOMP) += seccomp.o obj-$(CONFIG_RELAY) += relay.o obj-$(CONFIG_SYSCTL) += utsname_sysctl.o obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o obj-$(CONFIG_TRACEPOINTS) += tracepoint.o obj-$(CONFIG_LATENCYTOP) += latencytop.o obj-$(CONFIG_BINFMT_ELF) += elfcore.o obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o obj-$(CONFIG_FUNCTION_TRACER) += trace/ obj-$(CONFIG_TRACING) += trace/ obj-$(CONFIG_TRACE_CLOCK) += trace/ obj-$(CONFIG_RING_BUFFER) += trace/ obj-$(CONFIG_TRACEPOINTS) += trace/ obj-$(CONFIG_IRQ_WORK) += irq_work.o obj-$(CONFIG_CPU_PM) += cpu_pm.o obj-$(CONFIG_PERF_EVENTS) += events/ obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o obj-$(CONFIG_PADATA) += padata.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o $(obj)/configs.o: $(obj)/config_data.h # config_data.h contains the same information as ikconfig.h but gzipped. # Info from config_data can be extracted from /proc/config* targets += config_data.gz $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE $(call if_changed,gzip) filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") targets += config_data.h $(obj)/config_data.h: $(obj)/config_data.gz FORCE $(call filechk,ikconfiggz) $(obj)/time.o: $(obj)/timeconst.h quiet_cmd_hzfile = HZFILE $@ cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@ targets += hz.bc $(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE $(call if_changed,hzfile) quiet_cmd_bc = BC $@ cmd_bc = bc -q $(filter-out FORCE,$^) > $@ targets += timeconst.h $(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE $(call if_changed,bc) ############################################################################### # # Roll all the X.509 certificates that we can find together and pull them into # the kernel so that they get loaded into the system trusted keyring during # boot. # # We look in the source root and the build root for all files whose name ends # in ".x509". Unfortunately, this will generate duplicate filenames, so we # have make canonicalise the pathnames and then sort them to discard the # duplicates. # ############################################################################### ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y) X509_CERTIFICATES-y := $(wildcard *.x509) $(wildcard $(srctree)/*.x509) X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509 X509_CERTIFICATES-raw := $(sort $(foreach CERT,$(X509_CERTIFICATES-y), \ $(or $(realpath $(CERT)),$(CERT)))) X509_CERTIFICATES := $(subst $(realpath $(objtree))/,,$(X509_CERTIFICATES-raw)) ifeq ($(X509_CERTIFICATES),) $(warning *** No X.509 certificates found ***) endif ifneq ($(wildcard $(obj)/.x509.list),) ifneq ($(shell cat $(obj)/.x509.list),$(X509_CERTIFICATES)) $(info X.509 certificate list changed) $(shell rm $(obj)/.x509.list) endif endif kernel/system_certificates.o: $(obj)/x509_certificate_list quiet_cmd_x509certs = CERTS $@ cmd_x509certs = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; echo " - Including cert $(X509)") targets += $(obj)/x509_certificate_list $(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list $(call if_changed,x509certs) targets += $(obj)/.x509.list $(obj)/.x509.list: @echo $(X509_CERTIFICATES) >$@ endif clean-files := x509_certificate_list .x509.list ifeq ($(CONFIG_MODULE_SIG),y) ############################################################################### # # If module signing is requested, say by allyesconfig, but a key has not been # supplied, then one will need to be generated to make sure the build does not # fail and that the kernel may be used afterwards. # ############################################################################### ifndef CONFIG_MODULE_SIG_HASH $(error Could not determine digest type to use from kernel config) endif signing_key.priv signing_key.x509: x509.genkey @echo "###" @echo "### Now generating an X.509 key pair to be used for signing modules." @echo "###" @echo "### If this takes a long time, you might wish to run rngd in the" @echo "### background to keep the supply of entropy topped up. It" @echo "### needs to be run as root, and uses a hardware random" @echo "### number generator if one is available." @echo "###" openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ -batch -x509 -config x509.genkey \ -outform DER -out signing_key.x509 \ -keyout signing_key.priv 2>&1 @echo "###" @echo "### Key pair generated." @echo "###" x509.genkey: @echo Generating X.509 key generation config @echo >x509.genkey "[ req ]" @echo >>x509.genkey "default_bits = 4096" @echo >>x509.genkey "distinguished_name = req_distinguished_name" @echo >>x509.genkey "prompt = no" @echo >>x509.genkey "string_mask = utf8only" @echo >>x509.genkey "x509_extensions = myexts" @echo >>x509.genkey @echo >>x509.genkey "[ req_distinguished_name ]" @echo >>x509.genkey "O = Magrathea" @echo >>x509.genkey "CN = Glacier signing key" @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2" @echo >>x509.genkey @echo >>x509.genkey "[ myexts ]" @echo >>x509.genkey "basicConstraints=critical,CA:FALSE" @echo >>x509.genkey "keyUsage=digitalSignature" @echo >>x509.genkey "subjectKeyIdentifier=hash" @echo >>x509.genkey "authorityKeyIdentifier=keyid" endif