[PATCH] headers_check: better search for functions in headers

[Alexander Shishkin]

Some headers don't bother with "extern" in function prototypes,
which results in said prototypes being unnoticed and exported
to userland.

This patch slightly improves detection of such cases by checking
for C type names as well in the beginning of a line.

Signed-off-by: Alexander Shishkin <virtuoso@xxxxxxxxx>
CC: Stephen Hemminger <shemminger@xxxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: Michal Marek <mmarek@xxxxxxx>
CC: WANG Cong <amwang@xxxxxxxxxx>
CC: linux-kernel@xxxxxxxxxxxxxxx
---
 scripts/headers_check.pl |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/scripts/headers_check.pl b/scripts/headers_check.pl
index 50d6cfd..e0e25a1 100644
--- a/scripts/headers_check.pl
+++ b/scripts/headers_check.pl
@@ -64,7 +64,7 @@ sub check_include
 
 sub check_declarations
 {
-	if ($line =~m/^\s*extern\b/) {
+	if ($line =~m/^(\s*extern|unsigned|char|short|int|long|void)\b/) {
 		printf STDERR "$filename:$lineno: " .
 		              "userspace cannot call function or variable " .
 		              "defined in the kernel\n";
-- 
1.7.2.1.45.gb66c2

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