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headers_check.pl: disallow extern's

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Since prototypes with "extern" refer to kernel functions, they make no
sense in userspace, so reject them automatically.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
[sam: made it into a warning]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Mike Frysinger 2008-12-27 02:43:36 -05:00 committed by Sam Ravnborg
parent 7826005e5a
commit 46b8af50ba
1 changed files with 11 additions and 1 deletions
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12
scripts/headers_check.pl
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@ -14,7 +14,9 @@
# Only include files located in asm* and linux* are checked. # Only include files located in asm* and linux* are checked.
# The rest are assumed to be system include files. # 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; use strict;
@ -33,6 +35,7 @@ foreach my $file (@files) {
while ($line = <FH>) { while ($line = <FH>) {
$lineno++; $lineno++;
check_include(); check_include();
check_prototypes();
} }
close FH; close FH;
} }
@ -54,3 +57,10 @@ sub check_include
} }
} }
} }
sub check_prototypes
{
if ($line =~ m/^\s*extern\b/) {
printf STDERR "$filename:$lineno: extern's make no sense in userspace\n";
}
}