projects/linux·blob v2.6.21-rc5 · refs

71 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
8$| = 1;
9
10my $debugging = 0;
11
12foreach $file (@ARGV)
13{
14 # Open this file.
15 open(FILE, $file) || die "Can't open $file: $!\n";
16
17 # Initialize variables.
18 my $fInComment = 0;
19 my $fInString = 0;
20 my $fUseVersion = 0;
21 my $iLinuxVersion = 0;
22
23 LINE: while ( <FILE> )
24 {
25 # Strip comments.
26 $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
27 m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
28
29 # Pick up definitions.
30 if ( m/^\s*#/o ) {
31 $iLinuxVersion = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o;
32 }
33
34 # Strip strings.
35 $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
36 m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
37
38 # Pick up definitions.
39 if ( m/^\s*#/o ) {
40 $iLinuxVersion = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
41 }
42
43 # Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE
44 if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/)) {
45 $fUseVersion = 1;
46 last LINE if $iLinuxVersion;
47 }
48 }
49
50 # Report used version IDs without include?
51 if ($fUseVersion && ! $iLinuxVersion) {
52 print "$file: $.: need linux/version.h\n";
53 }
54
55 # Report superfluous includes.
56 if ($iLinuxVersion && ! $fUseVersion) {
57 print "$file: $iLinuxVersion linux/version.h not needed.\n";
58 }
59
60 # debug: report OK results:
61 if ($debugging) {
62 if ($iLinuxVersion && $fUseVersion) {
63 print "$file: version use is OK ($iLinuxVersion)\n";
64 }
65 if (! $iLinuxVersion && ! $fUseVersion) {
66 print "$file: version use is OK (none)\n";
67 }
68 }
69
70 close(FILE);
71}