headers_check: better search for functions in headers
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 <[email protected]>
Cc: Stephen Hemminger <[email protected]>
Cc: Michal Marek <[email protected]>
Cc: WANG Cong <[email protected]>
Cc: Randy Dunlap <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Michal Marek <[email protected]>
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_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";
