projects/linux·blob v2.6.36 · refs

70 lines · 1.8 KiB

1#! /usr/bin/perl
2#
3# checkversion find uses of LINUX_VERSION_CODE or KERNEL_VERSION
4# without including <linux/version.h>, or cases of
5# including <linux/version.h> that don't need it.
6# Copyright (C) 2003, Randy Dunlap <[email protected]>
7
8use strict;
9
10$| = 1;
11
12my $debugging;
13
14foreach my $file (@ARGV) {
15 # Open this file.
16 open( my $f, '<', $file )
17 or die "Can't open $file: $!\n";
18
19 # Initialize variables.
20 my ($fInComment, $fInString, $fUseVersion);
21 my $iLinuxVersion = 0;
22
23 while (<$f>) {
24 # Strip comments.
25 $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
26 m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
27
28 # Pick up definitions.
29 if ( m/^\s*#/o ) {
30 $iLinuxVersion = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o;
31 }
32
33 # Strip strings.
34 $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
35 m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
36
37 # Pick up definitions.
38 if ( m/^\s*#/o ) {
39 $iLinuxVersion = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
40 }
41
42 # Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE
43 if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/)) {
44 $fUseVersion = 1;
45 last if $iLinuxVersion;
46 }
47 }
48
49 # Report used version IDs without include?
50 if ($fUseVersion && ! $iLinuxVersion) {
51 print "$file: $.: need linux/version.h\n";
52 }
53
54 # Report superfluous includes.
55 if ($iLinuxVersion && ! $fUseVersion) {
56 print "$file: $iLinuxVersion linux/version.h not needed.\n";
57 }
58
59 # debug: report OK results:
60 if ($debugging) {
61 if ($iLinuxVersion && $fUseVersion) {
62 print "$file: version use is OK ($iLinuxVersion)\n";
63 }
64 if (! $iLinuxVersion && ! $fUseVersion) {
65 print "$file: version use is OK (none)\n";
66 }
67 }
68
69 close($f);
70}