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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697#!/usr/bin/env perl# SPDX-License-Identifier: GPL-2.0## headers_check.pl execute a number of trivial consistency checks## Usage: headers_check.pl dir [files...]# dir: dir to look for included files# files: list of files to check## The script reads the supplied files line by line and:## 1) for each include statement it checks if the# included file actually exists.# Only include files located in asm* and linux* are checked.# The rest are assumed to be system include files.## 2) It is checked that prototypes does not use "extern"## 3) Check for leaked CONFIG_ symbols
use warnings;use strict;use File::Basename;
my ($dir, @files) = @ARGV;
my $ret = 0;my $line;my $lineno = 0;my $filename;
foreach my $file (@files) { $filename = $file;
open(my $fh, '<', $filename) or die "$filename: $!\n"; $lineno = 0; while ($line = <$fh>) { $lineno++; &check_include(); &check_asm_types(); &check_declarations(); } close $fh;}exit $ret;
sub check_include{ if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) { my $inc = $1; my $found; $found = stat($dir . "/" . $inc); if (!$found) { printf STDERR "$filename:$lineno: included file '$inc' is not exported\n"; $ret = 1; } }}
sub check_declarations{ # soundcard.h is what it is if ($line =~ m/^void seqbuf_dump\(void\);/) { return; } # drm headers are being C++ friendly if ($line =~ m/^extern "C"/) { return; } if ($line =~ m/^(\s*extern|unsigned|char|short|int|long|void)\b/) { printf STDERR "$filename:$lineno: " . "userspace cannot reference function or " . "variable defined in the kernel\n"; $ret = 1; }}
my $linux_asm_types;sub check_asm_types{ if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) { return; } if ($lineno == 1) { $linux_asm_types = 0; } elsif ($linux_asm_types >= 1) { return; } if ($line =~ m/^\s*#\s*include\s+<asm\/types.h>/) { $linux_asm_types = 1; printf STDERR "$filename:$lineno: " . "include of <linux/types.h> is preferred over <asm/types.h>\n"; $ret = 1; }}