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wireless: don't write C files on failures 

Change the scripting inside the shipped/extra certs C code
generation to not write the file when there are any failures.
That way, if the build aborts due to failures, we don't get
into a situation where a dummy file has been created and the
next build succeeds, but not with the desired output.

Fixes: 90a53e4432 ("cfg80211: implement regdb signature checking")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2017-12-05 11:59:33 +01:00
parent 71334963d0
commit 715a123347
1 changed files with 38 additions and 10 deletions
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48
net/wireless/Makefile
View File

@ -25,17 +25,45 @@ endif
$(obj)/shipped-certs.c: $(wildcard $(srctree)/$(src)/certs/*.x509)
@$(kecho) " GEN $@"
@echo '#include "reg.h"' > $@
@echo 'const u8 shipped_regdb_certs[] = {' >> $@
@for f in $^ ; do od -An -v -tx1 < $$f | sed -e 's/ /\n/g' | sed -e 's/^[0-9a-f]\+$$/\0/;t;d' | sed -e 's/^/0x/;s/$$/,/' >> $@ ; done
@echo '};' >> $@
@echo 'unsigned int shipped_regdb_certs_len = sizeof(shipped_regdb_certs);' >> $@
@(set -e; \
allf=""; \
for f in $^ ; do \
# similar to hexdump -v -e '1/1 "0x%.2x," "\n"' \
thisf=$$(od -An -v -tx1 < $$f | \
sed -e 's/ /\n/g' | \
sed -e 's/^[0-9a-f]\+$$/\0/;t;d' | \
sed -e 's/^/0x/;s/$$/,/'); \
# file should not be empty - maybe command substitution failed? \
test ! -z "$$thisf";\
allf=$$allf$$thisf;\
done; \
( \
echo '#include "reg.h"'; \
echo 'const u8 shipped_regdb_certs[] = {'; \
echo "$$allf"; \
echo '};'; \
echo 'unsigned int shipped_regdb_certs_len = sizeof(shipped_regdb_certs);'; \
) >> $@)
$(obj)/extra-certs.c: $(CONFIG_CFG80211_EXTRA_REGDB_KEYDIR:"%"=%) \
$(wildcard $(CONFIG_CFG80211_EXTRA_REGDB_KEYDIR:"%"=%)/*.x509)
@$(kecho) " GEN $@"
@echo '#include "reg.h"' > $@
@echo 'const u8 extra_regdb_certs[] = {' >> $@
@for f in $^ ; do test -f $$f && od -An -v -tx1 < $$f | sed -e 's/ /\n/g' | sed -e 's/^[0-9a-f]\+$$/\0/;t;d' | sed -e 's/^/0x/;s/$$/,/' >> $@ ; done
@echo '};' >> $@
@echo 'unsigned int extra_regdb_certs_len = sizeof(extra_regdb_certs);' >> $@
@(set -e; \
allf=""; \
for f in $^ ; do \
# similar to hexdump -v -e '1/1 "0x%.2x," "\n"' \
thisf=$$(od -An -v -tx1 < $$f | \
sed -e 's/ /\n/g' | \
sed -e 's/^[0-9a-f]\+$$/\0/;t;d' | \
sed -e 's/^/0x/;s/$$/,/'); \
# file should not be empty - maybe command substitution failed? \
test ! -z "$$thisf";\
allf=$$allf$$thisf;\
done; \
( \
echo '#include "reg.h"'; \
echo 'const u8 extra_regdb_certs[] = {'; \
echo "$$allf"; \
echo '};'; \
echo 'unsigned int extra_regdb_certs_len = sizeof(extra_regdb_certs);'; \
) >> $@)