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authorRusty Russell <rusty@rustcorp.com.au>2012-10-19 11:53:15 +1030
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-19 08:27:43 -0700
commite2a666d52b4825c26c857cada211f3baac26a600 (patch)
treeb7e91bd10e8c1b2932ffd1716fde3abccd7c4dd8 /scripts/Makefile.modpost
parentc9623de4fc2f8320fe94316b46171683be3b1d59 (diff)
kbuild: sign the modules at install time
Linus deleted the old code and put signing on the install command, I fixed it to extract the keyid and signer-name within sign-file and cleaned up that script now it always signs in-place. Some enthusiast should convert sign-key to perl and pull x509keyid into it. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/Makefile.modpost')
-rw-r--r--scripts/Makefile.modpost77
1 files changed, 1 insertions, 76 deletions
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 002089141df4..a1cb0222ebe6 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -14,8 +14,7 @@
# 3) create one <module>.mod.c file pr. module
# 4) create one Module.symvers file with CRC for all exported symbols
# 5) compile all <module>.mod.c files
-# 6) final link of the module to a <module.ko> (or <module.unsigned>) file
-# 7) signs the modules to a <module.ko> file
+# 6) final link of the module to a <module.ko> file
# Step 3 is used to place certain information in the module's ELF
# section, including information such as:
@@ -33,8 +32,6 @@
# Step 4 is solely used to allow module versioning in external modules,
# where the CRC of each module is retrieved from the Module.symvers file.
-# Step 7 is dependent on CONFIG_MODULE_SIG being enabled.
-
# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined
# symbols in the final module linking stage
# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
@@ -119,7 +116,6 @@ $(modules:.ko=.mod.o): %.mod.o: %.mod.c FORCE
targets += $(modules:.ko=.mod.o)
# Step 6), final link of the modules
-ifneq ($(CONFIG_MODULE_SIG),y)
quiet_cmd_ld_ko_o = LD [M] $@
cmd_ld_ko_o = $(LD) -r $(LDFLAGS) \
$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
@@ -129,78 +125,7 @@ $(modules): %.ko :%.o %.mod.o FORCE
$(call if_changed,ld_ko_o)
targets += $(modules)
-else
-quiet_cmd_ld_ko_unsigned_o = LD [M] $@
- cmd_ld_ko_unsigned_o = \
- $(LD) -r $(LDFLAGS) \
- $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
- -o $@ $(filter-out FORCE,$^) \
- $(if $(AFTER_LINK),; $(AFTER_LINK))
-
-$(modules:.ko=.ko.unsigned): %.ko.unsigned :%.o %.mod.o FORCE
- $(call if_changed,ld_ko_unsigned_o)
-
-targets += $(modules:.ko=.ko.unsigned)
-
-# Step 7), sign the modules
-MODSECKEY = ./signing_key.priv
-MODPUBKEY = ./signing_key.x509
-
-ifeq ($(wildcard $(MODSECKEY))+$(wildcard $(MODPUBKEY)),$(MODSECKEY)+$(MODPUBKEY))
-ifeq ($(KBUILD_SRC),)
- # no O= is being used
- SCRIPTS_DIR := scripts
-else
- SCRIPTS_DIR := $(KBUILD_SRC)/scripts
-endif
-SIGN_MODULES := 1
-else
-SIGN_MODULES := 0
-endif
-
-# only sign if it's an in-tree module
-ifneq ($(KBUILD_EXTMOD),)
-SIGN_MODULES := 0
-endif
-# We strip the module as best we can - note that using both strip and eu-strip
-# results in a smaller module than using either alone.
-EU_STRIP = $(shell which eu-strip || echo true)
-
-quiet_cmd_sign_ko_stripped_ko_unsigned = STRIP [M] $@
- cmd_sign_ko_stripped_ko_unsigned = \
- cp $< $@ && \
- strip -x -g $@ && \
- $(EU_STRIP) $@
-
-ifeq ($(SIGN_MODULES),1)
-
-quiet_cmd_genkeyid = GENKEYID $@
- cmd_genkeyid = \
- perl $(SCRIPTS_DIR)/x509keyid $< $<.signer $<.keyid
-
-%.signer %.keyid: %
- $(call if_changed,genkeyid)
-
-KEYRING_DEP := $(MODSECKEY) $(MODPUBKEY) $(MODPUBKEY).signer $(MODPUBKEY).keyid
-quiet_cmd_sign_ko_ko_stripped = SIGN [M] $@
- cmd_sign_ko_ko_stripped = \
- sh $(SCRIPTS_DIR)/sign-file $(MODSECKEY) $(MODPUBKEY) $< $@
-else
-KEYRING_DEP :=
-quiet_cmd_sign_ko_ko_unsigned = NO SIGN [M] $@
- cmd_sign_ko_ko_unsigned = \
- cp $< $@
-endif
-
-$(modules): %.ko :%.ko.stripped $(KEYRING_DEP) FORCE
- $(call if_changed,sign_ko_ko_stripped)
-
-$(patsubst %.ko,%.ko.stripped,$(modules)): %.ko.stripped :%.ko.unsigned FORCE
- $(call if_changed,sign_ko_stripped_ko_unsigned)
-
-targets += $(modules)
-endif
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------

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