Move certificate handling to its own directory

Move certificate handling out of the kernel/ directory and into a certs/
directory to get all the weird stuff in one place and move the generated
signing keys into this directory.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 0 insertions, 143 deletions

diff --git a/kernel/Makefile b/kernel/Makefile
index 65ef3846fbe8..1aa153a1be21 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -45,7 +45,6 @@ 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
@@ -111,145 +110,3 @@ $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
 targets += config_data.h
 $(obj)/config_data.h: $(obj)/config_data.gz FORCE
         $(call filechk,ikconfiggz)
-
-###############################################################################
-#
-# When a Kconfig string contains a filename, it is suitable for
-# passing to shell commands. It is surrounded by double-quotes, and
-# any double-quotes or backslashes within it are escaped by
-# backslashes.
-#
-# This is no use for dependencies or $(wildcard). We need to strip the
-# surrounding quotes and the escaping from quotes and backslashes, and
-# we *do* need to escape any spaces in the string. So, for example:
-#
-# Usage: $(eval $(call config_filename,FOO))
-#
-# Defines FOO_FILENAME based on the contents of the CONFIG_FOO option,
-# transformed as described above to be suitable for use within the
-# makefile.
-#
-# Also, if the filename is a relative filename and exists in the source
-# tree but not the build tree, define FOO_SRCPREFIX as $(srctree)/ to
-# be prefixed to *both* command invocation and dependencies.
-#
-# Note: We also print the filenames in the quiet_cmd_foo text, and
-# perhaps ought to have a version specially escaped for that purpose.
-# But it's only cosmetic, and $(patsubst "%",%,$(CONFIG_FOO)) is good
-# enough.  It'll strip the quotes in the common case where there's no
-# space and it's a simple filename, and it'll retain the quotes when
-# there's a space. There are some esoteric cases in which it'll print
-# the wrong thing, but we don't really care. The actual dependencies
-# and commands *do* get it right, with various combinations of single
-# and double quotes, backslashes and spaces in the filenames.
-#
-###############################################################################
-#
-quote := $(firstword " ")
-space :=
-space +=
-space_escape := %%%SPACE%%%
-#
-define config_filename
-ifneq ($$(CONFIG_$(1)),"")
-$(1)_FILENAME := $$(subst \\,\,$$(subst \$$(quote),$$(quote),$$(subst $$(space_escape),\$$(space),$$(patsubst "%",%,$$(subst $$(space),$$(space_escape),$$(CONFIG_$(1)))))))
-ifneq ($$(patsubst /%,%,$$(firstword $$($(1)_FILENAME))),$$(firstword $$($(1)_FILENAME)))
-else
-ifeq ($$(wildcard $$($(1)_FILENAME)),)
-ifneq ($$(wildcard $$(srctree)/$$($(1)_FILENAME)),)
-$(1)_SRCPREFIX := $(srctree)/
-endif
-endif
-endif
-endif
-endef
-#
-###############################################################################
-
-ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)
-
-$(eval $(call config_filename,SYSTEM_TRUSTED_KEYS))
-
-# GCC doesn't include .incbin files in -MD generated dependencies (PR#66871)
-$(obj)/system_certificates.o: $(obj)/x509_certificate_list
-
-# Cope with signing_key.x509 existing in $(srctree) not $(objtree)
-AFLAGS_system_certificates.o := -I$(srctree)
-
-quiet_cmd_extract_certs  = EXTRACT_CERTS   $(patsubst "%",%,$(2))
-      cmd_extract_certs  = scripts/extract-cert $(2) $@ || ( rm $@; exit 1)
-
-targets += x509_certificate_list
-$(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(SYSTEM_TRUSTED_KEYS_FILENAME) FORCE
-        $(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS))
-endif
-
-clean-files := x509_certificate_list .x509.list
-
-ifeq ($(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
-$(error Could not determine digest type to use from kernel config)
-endif
-
-# We do it this way rather than having a boolean option for enabling an
-# external private key, because 'make randconfig' might enable such a
-# boolean option and we unfortunately can't make it depend on !RANDCONFIG.
-ifeq ($(CONFIG_MODULE_SIG_KEY),"signing_key.pem")
-signing_key.pem: 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 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
-                -batch -x509 -config x509.genkey \
-                -outform PEM -out signing_key.pem \
-                -keyout signing_key.pem 2>&1
-        @echo "###"
-        @echo "### Key pair generated."
-        @echo "###"
-
-x509.genkey:
-        @echo Generating X.509 key generation config
-        @echo  >x509.genkey "[ req ]"
-        @echo >>x509.genkey "default_bits = 4096"
-        @echo >>x509.genkey "distinguished_name = req_distinguished_name"
-        @echo >>x509.genkey "prompt = no"
-        @echo >>x509.genkey "string_mask = utf8only"
-        @echo >>x509.genkey "x509_extensions = myexts"
-        @echo >>x509.genkey
-        @echo >>x509.genkey "[ req_distinguished_name ]"
-        @echo >>x509.genkey "#O = Unspecified company"
-        @echo >>x509.genkey "CN = Build time autogenerated kernel key"
-        @echo >>x509.genkey "#emailAddress = unspecified.user@unspecified.company"
-        @echo >>x509.genkey
-        @echo >>x509.genkey "[ myexts ]"
-        @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
-        @echo >>x509.genkey "keyUsage=digitalSignature"
-        @echo >>x509.genkey "subjectKeyIdentifier=hash"
-        @echo >>x509.genkey "authorityKeyIdentifier=keyid"
-endif
-
-$(eval $(call config_filename,MODULE_SIG_KEY))
-
-# If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it
-ifeq ($(patsubst pkcs11:%,%,$(firstword $(MODULE_SIG_KEY_FILENAME))),$(firstword $(MODULE_SIG_KEY_FILENAME)))
-X509_DEP := $(MODULE_SIG_KEY_SRCPREFIX)$(MODULE_SIG_KEY_FILENAME)
-endif
-
-# GCC PR#66871 again.
-$(obj)/system_certificates.o: signing_key.x509
-
-signing_key.x509: scripts/extract-cert include/config/module/sig/key.h $(X509_DEP)
-        $(call cmd,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY))
-endif