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 <rdunlap@xenotime.net>
 7
 8use strict;
 9
10$| = 1;
11
12my $debugging;
13
14foreach my $file (@ARGV) {
15    next if $file =~ "include/linux/version\.h";
16    # Open this file.
17    open( my $f, '<', $file )
18      or die "Can't open $file: $!\n";
19
20    # Initialize variables.
21    my ($fInComment, $fInString, $fUseVersion);
22    my $iLinuxVersion = 0;
23
24    while (<$f>) {
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 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($f);
71}

 1#! /usr/bin/env perl
 2# SPDX-License-Identifier: GPL-2.0
 3#
 4# checkversion find uses of LINUX_VERSION_CODE or KERNEL_VERSION
 5# without including <linux/version.h>, or cases of
 6# including <linux/version.h> that don't need it.
 7# Copyright (C) 2003, Randy Dunlap <rdunlap@xenotime.net>
 8
 9use strict;
10
11$| = 1;
12
13my $debugging;
14
15foreach my $file (@ARGV) {
16    next if $file =~ "include/linux/version\.h";
17    # Open this file.
18    open( my $f, '<', $file )
19      or die "Can't open $file: $!\n";
20
21    # Initialize variables.
22    my ($fInComment, $fInString, $fUseVersion);
23    my $iLinuxVersion = 0;
24
25    while (<$f>) {
26	# Strip comments.
27	$fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
28	m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
29
30	# Pick up definitions.
31	if ( m/^\s*#/o ) {
32	    $iLinuxVersion      = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o;
33	}
34
35	# Strip strings.
36	$fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
37	m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
38
39	# Pick up definitions.
40	if ( m/^\s*#/o ) {
41	    $iLinuxVersion      = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
42	}
43
44	# Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE
45	if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/)) {
46	    $fUseVersion = 1;
47            last if $iLinuxVersion;
48        }
49    }
50
51    # Report used version IDs without include?
52    if ($fUseVersion && ! $iLinuxVersion) {
53	print "$file: $.: need linux/version.h\n";
54    }
55
56    # Report superfluous includes.
57    if ($iLinuxVersion && ! $fUseVersion) {
58	print "$file: $iLinuxVersion linux/version.h not needed.\n";
59    }
60
61    # debug: report OK results:
62    if ($debugging) {
63        if ($iLinuxVersion && $fUseVersion) {
64	    print "$file: version use is OK ($iLinuxVersion)\n";
65        }
66        if (! $iLinuxVersion && ! $fUseVersion) {
67	    print "$file: version use is OK (none)\n";
68        }
69    }
70
71    close($f);
72}