From: Mike Frysinger <vapier@xxxxxxxxxx> Since prototypes with "extern" refer to kernel functions, they make no sense in userspace, so reject them automatically. Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> [sam: made it into a warning] Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx> --- scripts/headers_check.pl | 12 +++++++++++- 1 files changed, 11 insertions(+), 1 deletions(-) diff --git a/scripts/headers_check.pl b/scripts/headers_check.pl index 488a3b1..5bdd975 100644 --- a/scripts/headers_check.pl +++ b/scripts/headers_check.pl @@ -14,7 +14,9 @@ # Only include files located in asm* and linux* are checked. # The rest are assumed to be system include files. # -# 2) TODO: check for leaked CONFIG_ symbols +# 2) It is checked that prototypes does not use "extern" +# +# 3) TODO: check for leaked CONFIG_ symbols use strict; @@ -33,6 +35,7 @@ foreach my $file (@files) { while ($line = <FH>) { $lineno++; check_include(); + check_prototypes(); } close FH; } @@ -54,3 +57,10 @@ sub check_include } } } + +sub check_prototypes +{ + if ($line =~ m/^\s*extern\b/) { + printf STDERR "$filename:$lineno: extern's make no sense in userspace\n"; + } +} -- 1.6.0.2.GIT -- 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