When using `make localmodconfig` and friends, if the input config comes from a kernel that was built in a different environment (for example, the canonical case of using localmodconfig to trim a distribution kernel config) the key files for module signature checking will not be available and should be regenerated or omitted. Otherwise, the user will be faced with annoying errors when trying to build with the generated .config: make[1]: *** No rule to make target 'keyring.crt', needed by 'certs/x509_certificate_list'. Stop. Makefile:1576: recipe for target 'certs/' failed Signed-off-by: Benjamin Poirier <bpoirier@xxxxxxxx> --- scripts/kconfig/streamline_config.pl | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl index 7036ae3..514735d 100755 --- a/scripts/kconfig/streamline_config.pl +++ b/scripts/kconfig/streamline_config.pl @@ -610,6 +610,40 @@ foreach my $line (@config_file) { next; } + if (/CONFIG_MODULE_SIG_KEY="(.+)"/) { + my $orig_cert = $1; + my $default_cert = "certs/signing_key.pem"; + + # Check that the logic in this script still matches the one in Kconfig + if (!defined($depends{"MODULE_SIG_KEY"}) || + $depends{"MODULE_SIG_KEY"} !~ /"\Q$default_cert\E"/) { + die "Assertion failure, update needed"; + } + + if ($orig_cert ne $default_cert && ! -f $orig_cert) { + print STDERR "Module signature verification enabled but ", + "module signing key \"$orig_cert\" not found. Resetting ", + "signing key to default value.\n"; + print "CONFIG_MODULE_SIG_KEY=\"$default_cert\"\n"; + } else { + print; + } + next; + } + + if (/CONFIG_SYSTEM_TRUSTED_KEYS="(.+)"/) { + my $orig_keys = $1; + + if (! -f $orig_keys) { + print STDERR "System keyring enabled but keys \"$orig_keys\" ", + "not found. Resetting keys to default value.\n"; + print "CONFIG_SYSTEM_TRUSTED_KEYS=\"\"\n"; + } else { + print; + } + next; + } + if (/^(CONFIG.*)=(m|y)/) { if (defined($configs{$1})) { if ($localyesconfig) { -- 2.7.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html