kbuild: check for leaked CONFIG_ symbols to userspace (7e557a25) · Commits · e / devices / android_kernel_fairphone_FP4

scripts/headers_check.pl

+10 −1

Original line number	Original line	Diff line number	Diff line
	@@ -16,7 +16,7 @@
	#		#
	# 2) It is checked that prototypes does not use "extern"		# 2) It is checked that prototypes does not use "extern"
	#		#
	# 3) TODO: check for leaked CONFIG_ symbols		# 3) Check for leaked CONFIG_ symbols

	use strict;		use strict;

	@@ -36,6 +36,7 @@ foreach my $file (@files) {
	$lineno++;		$lineno++;
	check_include();		check_include();
	check_prototypes();		check_prototypes();
			check_config();
	}		}
	close FH;		close FH;
	}		}
	@@ -64,3 +65,11 @@ sub check_prototypes
	printf STDERR "$filename:$lineno: extern's make no sense in userspace\n";		printf STDERR "$filename:$lineno: extern's make no sense in userspace\n";
	}		}
	}		}

			sub check_config
			{
			if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9]+)[^a-zA-Z0-9]/) {
			printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n";
			}
			}