certs: Fix build error when PKCS#11 URI contains semicolon

[ Upstream commit b1c3d2beed8ef3699fab106340e33a79052df116 ]

When CONFIG_MODULE_SIG_KEY is PKCS#11 URI (pkcs11:*) and contains a
semicolon, signing_key.x509 fails to build:

  certs/extract-cert pkcs11:token=foo;object=bar;pin-value=1111 certs/signing_key.x509
  Usage: extract-cert <source> <dest>

Add quotes to the extract-cert argument to avoid splitting by the shell.

This approach was suggested by Masahiro Yamada <masahiroy@kernel.org>.

Fixes: d210c61d23dc ("kbuild: do not quote string values in include/config/auto.conf")
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/certs/Makefile b/certs/Makefile
index 9486ed924731b88fbb18fb08aa356bee62435296..799ad7b9e68a0f684794a472c77ffdd706eef292 100644 (file)
--- a/certs/Makefile
+++ b/certs/Makefile
@@ -23,8 +23,8 @@ $(obj)/blacklist_hash_list: $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) FORCE
 targets += blacklist_hash_list
 
 quiet_cmd_extract_certs  = CERT    $@
-      cmd_extract_certs  = $(obj)/extract-cert $(extract-cert-in) $@
-extract-cert-in = $(or $(filter-out $(obj)/extract-cert, $(real-prereqs)),"")
+      cmd_extract_certs  = $(obj)/extract-cert "$(extract-cert-in)" $@
+extract-cert-in = $(filter-out $(obj)/extract-cert, $(real-prereqs))
 
 $(obj)/system_certificates.o: $(obj)/x509_certificate_list