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-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 @@
14# 3) create one <module>.mod.c file pr. module 14# 3) create one <module>.mod.c file pr. module
15# 4) create one Module.symvers file with CRC for all exported symbols 15# 4) create one Module.symvers file with CRC for all exported symbols
16# 5) compile all <module>.mod.c files 16# 5) compile all <module>.mod.c files
17# 6) final link of the module to a <module.ko> (or <module.unsigned>) file 17# 6) final link of the module to a <module.ko> file
18# 7) signs the modules to a <module.ko> file
19 18
20# Step 3 is used to place certain information in the module's ELF 19# Step 3 is used to place certain information in the module's ELF
21# section, including information such as: 20# section, including information such as:
@@ -33,8 +32,6 @@
33# Step 4 is solely used to allow module versioning in external modules, 32# Step 4 is solely used to allow module versioning in external modules,
34# where the CRC of each module is retrieved from the Module.symvers file. 33# where the CRC of each module is retrieved from the Module.symvers file.
35 34
36# Step 7 is dependent on CONFIG_MODULE_SIG being enabled.
37
38# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined 35# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined
39# symbols in the final module linking stage 36# symbols in the final module linking stage
40# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules. 37# 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
119targets += $(modules:.ko=.mod.o) 116targets += $(modules:.ko=.mod.o)
120 117
121# Step 6), final link of the modules 118# Step 6), final link of the modules
122ifneq ($(CONFIG_MODULE_SIG),y)
123quiet_cmd_ld_ko_o = LD [M] $@ 119quiet_cmd_ld_ko_o = LD [M] $@
124 cmd_ld_ko_o = $(LD) -r $(LDFLAGS) \ 120 cmd_ld_ko_o = $(LD) -r $(LDFLAGS) \
125 $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ 121 $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
@@ -129,78 +125,7 @@ $(modules): %.ko :%.o %.mod.o FORCE
129 $(call if_changed,ld_ko_o) 125 $(call if_changed,ld_ko_o)
130 126
131targets += $(modules) 127targets += $(modules)
132else
133quiet_cmd_ld_ko_unsigned_o = LD [M] $@
134 cmd_ld_ko_unsigned_o = \
135 $(LD) -r $(LDFLAGS) \
136 $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
137 -o $@ $(filter-out FORCE,$^) \
138 $(if $(AFTER_LINK),; $(AFTER_LINK))
139
140$(modules:.ko=.ko.unsigned): %.ko.unsigned :%.o %.mod.o FORCE
141 $(call if_changed,ld_ko_unsigned_o)
142
143targets += $(modules:.ko=.ko.unsigned)
144
145# Step 7), sign the modules
146MODSECKEY = ./signing_key.priv
147MODPUBKEY = ./signing_key.x509
148
149ifeq ($(wildcard $(MODSECKEY))+$(wildcard $(MODPUBKEY)),$(MODSECKEY)+$(MODPUBKEY))
150ifeq ($(KBUILD_SRC),)
151 # no O= is being used
152 SCRIPTS_DIR := scripts
153else
154 SCRIPTS_DIR := $(KBUILD_SRC)/scripts
155endif
156SIGN_MODULES := 1
157else
158SIGN_MODULES := 0
159endif
160
161# only sign if it's an in-tree module
162ifneq ($(KBUILD_EXTMOD),)
163SIGN_MODULES := 0
164endif
165 128
166# We strip the module as best we can - note that using both strip and eu-strip
167# results in a smaller module than using either alone.
168EU_STRIP = $(shell which eu-strip || echo true)
169
170quiet_cmd_sign_ko_stripped_ko_unsigned = STRIP [M] $@
171 cmd_sign_ko_stripped_ko_unsigned = \
172 cp $< $@ && \
173 strip -x -g $@ && \
174 $(EU_STRIP) $@
175
176ifeq ($(SIGN_MODULES),1)
177
178quiet_cmd_genkeyid = GENKEYID $@
179 cmd_genkeyid = \
180 perl $(SCRIPTS_DIR)/x509keyid $< $<.signer $<.keyid
181
182%.signer %.keyid: %
183 $(call if_changed,genkeyid)
184
185KEYRING_DEP := $(MODSECKEY) $(MODPUBKEY) $(MODPUBKEY).signer $(MODPUBKEY).keyid
186quiet_cmd_sign_ko_ko_stripped = SIGN [M] $@
187 cmd_sign_ko_ko_stripped = \
188 sh $(SCRIPTS_DIR)/sign-file $(MODSECKEY) $(MODPUBKEY) $< $@
189else
190KEYRING_DEP :=
191quiet_cmd_sign_ko_ko_unsigned = NO SIGN [M] $@
192 cmd_sign_ko_ko_unsigned = \
193 cp $< $@
194endif
195
196$(modules): %.ko :%.ko.stripped $(KEYRING_DEP) FORCE
197 $(call if_changed,sign_ko_ko_stripped)
198
199$(patsubst %.ko,%.ko.stripped,$(modules)): %.ko.stripped :%.ko.unsigned FORCE
200 $(call if_changed,sign_ko_stripped_ko_unsigned)
201
202targets += $(modules)
203endif
204 129
205# Add FORCE to the prequisites of a target to force it to be always rebuilt. 130# Add FORCE to the prequisites of a target to force it to be always rebuilt.
206# --------------------------------------------------------------------------- 131# ---------------------------------------------------------------------------