1 #! /usr/bin/env perl 1 #! /usr/bin/env perl
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # checkversion finds uses of all macros in <li 4 # checkversion finds uses of all macros in <linux/version.h>
5 # where the source files do not #include <linu 5 # where the source files do not #include <linux/version.h>; or cases
6 # of including <linux/version.h> where it is n 6 # of including <linux/version.h> where it is not needed.
7 # Copyright (C) 2003, Randy Dunlap <rdunlap@inf 7 # Copyright (C) 2003, Randy Dunlap <rdunlap@infradead.org>
8 8
9 use strict; 9 use strict;
10 10
11 $| = 1; 11 $| = 1;
12 12
13 my $debugging; 13 my $debugging;
14 14
15 foreach my $file (@ARGV) { 15 foreach my $file (@ARGV) {
16 next if $file =~ "include/generated/uapi/l 16 next if $file =~ "include/generated/uapi/linux/version\.h";
17 next if $file =~ "usr/include/linux/versio 17 next if $file =~ "usr/include/linux/version\.h";
18 # Open this file. 18 # Open this file.
19 open( my $f, '<', $file ) 19 open( my $f, '<', $file )
20 or die "Can't open $file: $!\n"; 20 or die "Can't open $file: $!\n";
21 21
22 # Initialize variables. 22 # Initialize variables.
23 my ($fInComment, $fInString, $fUseVersion) 23 my ($fInComment, $fInString, $fUseVersion);
24 my $iLinuxVersion = 0; 24 my $iLinuxVersion = 0;
25 25
26 while (<$f>) { 26 while (<$f>) {
27 # Strip comments. 27 # Strip comments.
28 $fInComment && (s+^.*?\*/+ +o ? ($fInC 28 $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
29 m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.* 29 m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
30 30
31 # Pick up definitions. 31 # Pick up definitions.
32 if ( m/^\s*#/o ) { 32 if ( m/^\s*#/o ) {
33 $iLinuxVersion = $. if m/^\s* 33 $iLinuxVersion = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o;
34 } 34 }
35 35
36 # Strip strings. 36 # Strip strings.
37 $fInString && (s+^.*?"+ +o ? ($fInStri 37 $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
38 m+"+o && (s+".*?"+ +go, (s+".*$+ +o && 38 m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
39 39
40 # Pick up definitions. 40 # Pick up definitions.
41 if ( m/^\s*#/o ) { 41 if ( m/^\s*#/o ) {
42 $iLinuxVersion = $. if m/^\s* 42 $iLinuxVersion = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
43 } 43 }
44 44
45 # Look for uses: LINUX_VERSION_CODE, K 45 # Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION,
46 # LINUX_VERSION_MAJOR, LINUX_VERSION_P 46 # LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, LINUX_VERSION_SUBLEVEL
47 if (($_ =~ /LINUX_VERSION_CODE/) || ($ 47 if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/) ||
48 ($_ =~ /LINUX_VERSION_MAJOR/) || ( 48 ($_ =~ /LINUX_VERSION_MAJOR/) || ($_ =~ /LINUX_VERSION_PATCHLEVEL/) ||
49 ($_ =~ /LINUX_VERSION_SUBLEVEL/)) 49 ($_ =~ /LINUX_VERSION_SUBLEVEL/)) {
50 $fUseVersion = 1; 50 $fUseVersion = 1;
51 last if $iLinuxVersion; 51 last if $iLinuxVersion;
52 } 52 }
53 } 53 }
54 54
55 # Report used version IDs without include? 55 # Report used version IDs without include?
56 if ($fUseVersion && ! $iLinuxVersion) { 56 if ($fUseVersion && ! $iLinuxVersion) {
57 print "$file: $.: need linux/version.h 57 print "$file: $.: need linux/version.h\n";
58 } 58 }
59 59
60 # Report superfluous includes. 60 # Report superfluous includes.
61 if ($iLinuxVersion && ! $fUseVersion) { 61 if ($iLinuxVersion && ! $fUseVersion) {
62 print "$file: $iLinuxVersion linux/ver 62 print "$file: $iLinuxVersion linux/version.h not needed.\n";
63 } 63 }
64 64
65 # debug: report OK results: 65 # debug: report OK results:
66 if ($debugging) { 66 if ($debugging) {
67 if ($iLinuxVersion && $fUseVersion) { 67 if ($iLinuxVersion && $fUseVersion) {
68 print "$file: version use is OK ($ 68 print "$file: version use is OK ($iLinuxVersion)\n";
69 } 69 }
70 if (! $iLinuxVersion && ! $fUseVersion 70 if (! $iLinuxVersion && ! $fUseVersion) {
71 print "$file: version use is OK (n 71 print "$file: version use is OK (none)\n";
72 } 72 }
73 } 73 }
74 74
75 close($f); 75 close($f);
76 } 76 }
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