| # |
| # Makefile for the linux kernel. |
| # |
| |
| obj-y = fork.o exec_domain.o panic.o \ |
| cpu.o exit.o softirq.o resource.o \ |
| sysctl.o sysctl_binary.o capability.o ptrace.o user.o \ |
| signal.o sys.o kmod.o workqueue.o pid.o task_work.o \ |
| extable.o params.o \ |
| kthread.o sys_ni.o nsproxy.o \ |
| notifier.o ksysfs.o cred.o reboot.o \ |
| async.o range.o smpboot.o |
| |
| obj-$(CONFIG_MULTIUSER) += groups.o |
| |
| ifdef CONFIG_FUNCTION_TRACER |
| # Do not trace debug files and internal ftrace files |
| CFLAGS_REMOVE_cgroup-debug.o = $(CC_FLAGS_FTRACE) |
| CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE) |
| endif |
| |
| # cond_syscall is currently not LTO compatible |
| CFLAGS_sys_ni.o = $(DISABLE_LTO) |
| |
| obj-y += sched/ |
| obj-y += locking/ |
| obj-y += power/ |
| obj-y += printk/ |
| obj-y += irq/ |
| obj-y += rcu/ |
| obj-y += livepatch/ |
| |
| obj-$(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_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_BPF) += bpf/ |
| |
| 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-$(CONFIG_TORTURE_TEST) += torture.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/basic/bin2c; echo "MAGIC_END;") |
| targets += config_data.h |
| $(obj)/config_data.h: $(obj)/config_data.gz FORCE |
| $(call filechk,ikconfiggz) |
| |
| ############################################################################### |
| # |
| # Roll all the X.509 certificates that we can find together and pull them into |
| # the kernel so that they get loaded into the system trusted keyring during |
| # boot. |
| # |
| # We look in the source root and the build root for all files whose name ends |
| # in ".x509". Unfortunately, this will generate duplicate filenames, so we |
| # have make canonicalise the pathnames and then sort them to discard the |
| # duplicates. |
| # |
| ############################################################################### |
| ifeq ($(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),; $(kecho) " - 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 = Unspecified company" |
| @echo >>x509.genkey "CN = Build time autogenerated kernel key" |
| @echo >>x509.genkey "#emailAddress = unspecified.user@unspecified.company" |
| @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 |