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
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