blob: 39be97a54fa250de7a03a2286721bbd5f13c3968 [file] [log] [blame]
developer2cdaeb12022-10-04 20:25:05 +08001#!/usr/bin/env perl
2# SPDX-License-Identifier: GPL-2.0
3#
4# (c) 2001, Dave Jones. (the file handling bit)
5# (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
6# (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite)
7# (c) 2008-2010 Andy Whitcroft <apw@canonical.com>
8# (c) 2010-2018 Joe Perches <joe@perches.com>
9
10use strict;
11use warnings;
12use POSIX;
13use File::Basename;
14use Cwd 'abs_path';
15use Term::ANSIColor qw(:constants);
16use Encode qw(decode encode);
17
18my $P = $0;
19my $D = dirname(abs_path($P));
20
21my $V = '0.32';
22
23use Getopt::Long qw(:config no_auto_abbrev);
24
25my $quiet = 0;
26my $tree = 1;
27my $chk_signoff = 1;
28my $chk_patch = 1;
29my $tst_only;
30my $emacs = 0;
31my $terse = 0;
32my $showfile = 0;
33my $file = 0;
34my $git = 0;
35my %git_commits = ();
36my $check = 0;
37my $check_orig = 0;
38my $summary = 1;
39my $mailback = 0;
40my $summary_file = 0;
41my $show_types = 0;
42my $list_types = 0;
43my $fix = 0;
44my $fix_inplace = 0;
45my $root;
46my %debug;
47my %camelcase = ();
48my %use_type = ();
49my @use = ();
50my %ignore_type = ();
51my @ignore = ();
52my $help = 0;
53my $configuration_file = ".checkpatch.conf";
developer45c24662023-05-15 16:35:46 +080054my $max_line_length = 100;
developer2cdaeb12022-10-04 20:25:05 +080055my $ignore_perl_version = 0;
56my $minimum_perl_version = 5.10.0;
57my $min_conf_desc_length = 4;
58my $spelling_file = "$D/spelling.txt";
59my $codespell = 0;
60my $codespellfile = "/usr/share/codespell/dictionary.txt";
61my $conststructsfile = "$D/const_structs.checkpatch";
62my $typedefsfile = "";
63my $color = "auto";
64my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
65# git output parsing needs US English output, so first set backtick child process LANGUAGE
66my $git_command ='export LANGUAGE=en_US.UTF-8; git';
67
68sub help {
69 my ($exitcode) = @_;
70
71 print << "EOM";
72Usage: $P [OPTION]... [FILE]...
73Version: $V
74
75Options:
76 -q, --quiet quiet
77 --no-tree run without a kernel tree
78 --no-signoff do not check for 'Signed-off-by' line
79 --patch treat FILE as patchfile (default)
80 --emacs emacs compile window format
81 --terse one line per report
82 --showfile emit diffed file position, not input file position
83 -g, --git treat FILE as a single commit or git revision range
84 single git commit with:
85 <rev>
86 <rev>^
87 <rev>~n
88 multiple git commits with:
89 <rev1>..<rev2>
90 <rev1>...<rev2>
91 <rev>-<count>
92 git merges are ignored
93 -f, --file treat FILE as regular source file
94 --subjective, --strict enable more subjective tests
95 --list-types list the possible message types
96 --types TYPE(,TYPE2...) show only these comma separated message types
97 --ignore TYPE(,TYPE2...) ignore various comma separated message types
98 --show-types show the specific message type in the output
99 --max-line-length=n set the maximum line length, if exceeded, warn
100 --min-conf-desc-length=n set the min description length, if shorter, warn
101 --root=PATH PATH to the kernel tree root
102 --no-summary suppress the per-file summary
103 --mailback only produce a report in case of warnings/errors
104 --summary-file include the filename in summary
105 --debug KEY=[0|1] turn on/off debugging of KEY, where KEY is one of
106 'values', 'possible', 'type', and 'attr' (default
107 is all off)
108 --test-only=WORD report only warnings/errors containing WORD
109 literally
110 --fix EXPERIMENTAL - may create horrible results
111 If correctable single-line errors exist, create
112 "<inputfile>.EXPERIMENTAL-checkpatch-fixes"
113 with potential errors corrected to the preferred
114 checkpatch style
115 --fix-inplace EXPERIMENTAL - may create horrible results
116 Is the same as --fix, but overwrites the input
117 file. It's your fault if there's no backup or git
118 --ignore-perl-version override checking of perl version. expect
119 runtime errors.
120 --codespell Use the codespell dictionary for spelling/typos
121 (default:/usr/share/codespell/dictionary.txt)
122 --codespellfile Use this codespell dictionary
123 --typedefsfile Read additional types from this file
124 --color[=WHEN] Use colors 'always', 'never', or only when output
125 is a terminal ('auto'). Default is 'auto'.
126 -h, --help, --version display this help and exit
127
128When FILE is - read standard input.
129EOM
130
131 exit($exitcode);
132}
133
134sub uniq {
135 my %seen;
136 return grep { !$seen{$_}++ } @_;
137}
138
139sub list_types {
140 my ($exitcode) = @_;
141
142 my $count = 0;
143
144 local $/ = undef;
145
146 open(my $script, '<', abs_path($P)) or
147 die "$P: Can't read '$P' $!\n";
148
149 my $text = <$script>;
150 close($script);
151
152 my @types = ();
153 # Also catch when type or level is passed through a variable
154 for ($text =~ /(?:(?:\bCHK|\bWARN|\bERROR|&\{\$msg_level})\s*\(|\$msg_type\s*=)\s*"([^"]+)"/g) {
155 push (@types, $_);
156 }
157 @types = sort(uniq(@types));
158 print("#\tMessage type\n\n");
159 foreach my $type (@types) {
160 print(++$count . "\t" . $type . "\n");
161 }
162
163 exit($exitcode);
164}
165
166my $conf = which_conf($configuration_file);
167if (-f $conf) {
168 my @conf_args;
169 open(my $conffile, '<', "$conf")
170 or warn "$P: Can't find a readable $configuration_file file $!\n";
171
172 while (<$conffile>) {
173 my $line = $_;
174
175 $line =~ s/\s*\n?$//g;
176 $line =~ s/^\s*//g;
177 $line =~ s/\s+/ /g;
178
179 next if ($line =~ m/^\s*#/);
180 next if ($line =~ m/^\s*$/);
181
182 my @words = split(" ", $line);
183 foreach my $word (@words) {
184 last if ($word =~ m/^#/);
185 push (@conf_args, $word);
186 }
187 }
188 close($conffile);
189 unshift(@ARGV, @conf_args) if @conf_args;
190}
191
192# Perl's Getopt::Long allows options to take optional arguments after a space.
193# Prevent --color by itself from consuming other arguments
194foreach (@ARGV) {
195 if ($_ eq "--color" || $_ eq "-color") {
196 $_ = "--color=$color";
197 }
198}
199
200GetOptions(
201 'q|quiet+' => \$quiet,
202 'tree!' => \$tree,
203 'signoff!' => \$chk_signoff,
204 'patch!' => \$chk_patch,
205 'emacs!' => \$emacs,
206 'terse!' => \$terse,
207 'showfile!' => \$showfile,
208 'f|file!' => \$file,
209 'g|git!' => \$git,
210 'subjective!' => \$check,
211 'strict!' => \$check,
212 'ignore=s' => \@ignore,
213 'types=s' => \@use,
214 'show-types!' => \$show_types,
215 'list-types!' => \$list_types,
216 'max-line-length=i' => \$max_line_length,
217 'min-conf-desc-length=i' => \$min_conf_desc_length,
218 'root=s' => \$root,
219 'summary!' => \$summary,
220 'mailback!' => \$mailback,
221 'summary-file!' => \$summary_file,
222 'fix!' => \$fix,
223 'fix-inplace!' => \$fix_inplace,
224 'ignore-perl-version!' => \$ignore_perl_version,
225 'debug=s' => \%debug,
226 'test-only=s' => \$tst_only,
227 'codespell!' => \$codespell,
228 'codespellfile=s' => \$codespellfile,
229 'typedefsfile=s' => \$typedefsfile,
230 'color=s' => \$color,
231 'no-color' => \$color, #keep old behaviors of -nocolor
232 'nocolor' => \$color, #keep old behaviors of -nocolor
233 'h|help' => \$help,
234 'version' => \$help
235) or help(1);
236
237help(0) if ($help);
238
239list_types(0) if ($list_types);
240
241$fix = 1 if ($fix_inplace);
242$check_orig = $check;
243
244my $exit = 0;
245
246my $perl_version_ok = 1;
247if ($^V && $^V lt $minimum_perl_version) {
248 $perl_version_ok = 0;
249 printf "$P: requires at least perl version %vd\n", $minimum_perl_version;
250 exit(1) if (!$ignore_perl_version);
251}
252
253#if no filenames are given, push '-' to read patch from stdin
254if ($#ARGV < 0) {
255 push(@ARGV, '-');
256}
257
258if ($color =~ /^[01]$/) {
259 $color = !$color;
260} elsif ($color =~ /^always$/i) {
261 $color = 1;
262} elsif ($color =~ /^never$/i) {
263 $color = 0;
264} elsif ($color =~ /^auto$/i) {
265 $color = (-t STDOUT);
266} else {
267 die "Invalid color mode: $color\n";
268}
269
270sub hash_save_array_words {
271 my ($hashRef, $arrayRef) = @_;
272
273 my @array = split(/,/, join(',', @$arrayRef));
274 foreach my $word (@array) {
275 $word =~ s/\s*\n?$//g;
276 $word =~ s/^\s*//g;
277 $word =~ s/\s+/ /g;
278 $word =~ tr/[a-z]/[A-Z]/;
279
280 next if ($word =~ m/^\s*#/);
281 next if ($word =~ m/^\s*$/);
282
283 $hashRef->{$word}++;
284 }
285}
286
287sub hash_show_words {
288 my ($hashRef, $prefix) = @_;
289
290 if (keys %$hashRef) {
291 print "\nNOTE: $prefix message types:";
292 foreach my $word (sort keys %$hashRef) {
293 print " $word";
294 }
295 print "\n";
296 }
297}
298
299hash_save_array_words(\%ignore_type, \@ignore);
300hash_save_array_words(\%use_type, \@use);
301
302my $dbg_values = 0;
303my $dbg_possible = 0;
304my $dbg_type = 0;
305my $dbg_attr = 0;
306for my $key (keys %debug) {
307 ## no critic
308 eval "\${dbg_$key} = '$debug{$key}';";
309 die "$@" if ($@);
310}
311
312my $rpt_cleaners = 0;
313
314if ($terse) {
315 $emacs = 1;
316 $quiet++;
317}
318
319if ($tree) {
320 if (defined $root) {
321 if (!top_of_kernel_tree($root)) {
322 die "$P: $root: --root does not point at a valid tree\n";
323 }
324 } else {
325 if (top_of_kernel_tree('.')) {
326 $root = '.';
327 } elsif ($0 =~ m@(.*)/scripts/[^/]*$@ &&
328 top_of_kernel_tree($1)) {
329 $root = $1;
330 }
331 }
332
333 if (!defined $root) {
334 print "Must be run from the top-level dir. of a kernel tree\n";
335 exit(2);
336 }
337}
338
339my $emitted_corrupt = 0;
340
341our $Ident = qr{
342 [A-Za-z_][A-Za-z\d_]*
343 (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
344 }x;
345our $Storage = qr{extern|static|asmlinkage};
346our $Sparse = qr{
347 __user|
348 __kernel|
349 __force|
350 __iomem|
351 __must_check|
352 __kprobes|
353 __ref|
354 __refconst|
355 __refdata|
356 __rcu|
357 __private
358 }x;
359our $InitAttributePrefix = qr{__(?:mem|cpu|dev|net_|)};
360our $InitAttributeData = qr{$InitAttributePrefix(?:initdata\b)};
361our $InitAttributeConst = qr{$InitAttributePrefix(?:initconst\b)};
362our $InitAttributeInit = qr{$InitAttributePrefix(?:init\b)};
363our $InitAttribute = qr{$InitAttributeData|$InitAttributeConst|$InitAttributeInit};
364
365# Notes to $Attribute:
366# We need \b after 'init' otherwise 'initconst' will cause a false positive in a check
367our $Attribute = qr{
368 const|
369 __percpu|
370 __nocast|
371 __safe|
372 __bitwise|
373 __packed__|
374 __packed2__|
375 __naked|
376 __maybe_unused|
377 __always_unused|
378 __noreturn|
379 __used|
380 __cold|
381 __pure|
382 __noclone|
383 __deprecated|
384 __read_mostly|
385 __ro_after_init|
386 __kprobes|
387 $InitAttribute|
388 ____cacheline_aligned|
389 ____cacheline_aligned_in_smp|
390 ____cacheline_internodealigned_in_smp|
391 __weak
392 }x;
393our $Modifier;
394our $Inline = qr{inline|__always_inline|noinline|__inline|__inline__};
395our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
396our $Lval = qr{$Ident(?:$Member)*};
397
398our $Int_type = qr{(?i)llu|ull|ll|lu|ul|l|u};
399our $Binary = qr{(?i)0b[01]+$Int_type?};
400our $Hex = qr{(?i)0x[0-9a-f]+$Int_type?};
401our $Int = qr{[0-9]+$Int_type?};
402our $Octal = qr{0[0-7]+$Int_type?};
403our $String = qr{"[X\t]*"};
404our $Float_hex = qr{(?i)0x[0-9a-f]+p-?[0-9]+[fl]?};
405our $Float_dec = qr{(?i)(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:e-?[0-9]+)?[fl]?};
406our $Float_int = qr{(?i)[0-9]+e-?[0-9]+[fl]?};
407our $Float = qr{$Float_hex|$Float_dec|$Float_int};
408our $Constant = qr{$Float|$Binary|$Octal|$Hex|$Int};
409our $Assignment = qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
410our $Compare = qr{<=|>=|==|!=|<|(?<!-)>};
411our $Arithmetic = qr{\+|-|\*|\/|%};
412our $Operators = qr{
413 <=|>=|==|!=|
414 =>|->|<<|>>|<|>|!|~|
415 &&|\|\||,|\^|\+\+|--|&|\||$Arithmetic
416 }x;
417
418our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x;
419
420our $BasicType;
421our $NonptrType;
422our $NonptrTypeMisordered;
423our $NonptrTypeWithAttr;
424our $Type;
425our $TypeMisordered;
426our $Declare;
427our $DeclareMisordered;
428
429our $NON_ASCII_UTF8 = qr{
430 [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
431 | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
432 | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
433 | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
434 | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
435 | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
436 | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
437}x;
438
439our $UTF8 = qr{
440 [\x09\x0A\x0D\x20-\x7E] # ASCII
441 | $NON_ASCII_UTF8
442}x;
443
444our $typeC99Typedefs = qr{(?:__)?(?:[us]_?)?int_?(?:8|16|32|64)_t};
445our $typeOtherOSTypedefs = qr{(?x:
446 u_(?:char|short|int|long) | # bsd
447 u(?:nchar|short|int|long) # sysv
448)};
449our $typeKernelTypedefs = qr{(?x:
450 (?:__)?(?:u|s|be|le)(?:8|16|32|64)|
451 atomic_t
452)};
453our $typeTypedefs = qr{(?x:
454 $typeC99Typedefs\b|
455 $typeOtherOSTypedefs\b|
456 $typeKernelTypedefs\b
457)};
458
459our $zero_initializer = qr{(?:(?:0[xX])?0+$Int_type?|NULL|false)\b};
460
461our $logFunctions = qr{(?x:
462 printk(?:_ratelimited|_once|_deferred_once|_deferred|)|
463 (?:[a-z0-9]+_){1,2}(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)|
464 TP_printk|
465 WARN(?:_RATELIMIT|_ONCE|)|
466 panic|
467 MODULE_[A-Z_]+|
468 seq_vprintf|seq_printf|seq_puts
469)};
470
471our $allocFunctions = qr{(?x:
472 (?:(?:devm_)?
473 (?:kv|k|v)[czm]alloc(?:_node|_array)? |
474 kstrdup(?:_const)? |
475 kmemdup(?:_nul)?) |
476 (?:\w+)?alloc_skb(?:ip_align)? |
477 # dev_alloc_skb/netdev_alloc_skb, et al
478 dma_alloc_coherent
479)};
480
481our $signature_tags = qr{(?xi:
482 Signed-off-by:|
483 Co-developed-by:|
484 Acked-by:|
485 Tested-by:|
486 Reviewed-by:|
487 Reported-by:|
488 Suggested-by:|
489 To:|
490 Cc:
491)};
492
493our @typeListMisordered = (
494 qr{char\s+(?:un)?signed},
495 qr{int\s+(?:(?:un)?signed\s+)?short\s},
496 qr{int\s+short(?:\s+(?:un)?signed)},
497 qr{short\s+int(?:\s+(?:un)?signed)},
498 qr{(?:un)?signed\s+int\s+short},
499 qr{short\s+(?:un)?signed},
500 qr{long\s+int\s+(?:un)?signed},
501 qr{int\s+long\s+(?:un)?signed},
502 qr{long\s+(?:un)?signed\s+int},
503 qr{int\s+(?:un)?signed\s+long},
504 qr{int\s+(?:un)?signed},
505 qr{int\s+long\s+long\s+(?:un)?signed},
506 qr{long\s+long\s+int\s+(?:un)?signed},
507 qr{long\s+long\s+(?:un)?signed\s+int},
508 qr{long\s+long\s+(?:un)?signed},
509 qr{long\s+(?:un)?signed},
510);
511
512our @typeList = (
513 qr{void},
514 qr{(?:(?:un)?signed\s+)?char},
515 qr{(?:(?:un)?signed\s+)?short\s+int},
516 qr{(?:(?:un)?signed\s+)?short},
517 qr{(?:(?:un)?signed\s+)?int},
518 qr{(?:(?:un)?signed\s+)?long\s+int},
519 qr{(?:(?:un)?signed\s+)?long\s+long\s+int},
520 qr{(?:(?:un)?signed\s+)?long\s+long},
521 qr{(?:(?:un)?signed\s+)?long},
522 qr{(?:un)?signed},
523 qr{float},
524 qr{double},
525 qr{bool},
526 qr{struct\s+$Ident},
527 qr{union\s+$Ident},
528 qr{enum\s+$Ident},
529 qr{${Ident}_t},
530 qr{${Ident}_handler},
531 qr{${Ident}_handler_fn},
532 @typeListMisordered,
533);
534
535our $C90_int_types = qr{(?x:
536 long\s+long\s+int\s+(?:un)?signed|
537 long\s+long\s+(?:un)?signed\s+int|
538 long\s+long\s+(?:un)?signed|
539 (?:(?:un)?signed\s+)?long\s+long\s+int|
540 (?:(?:un)?signed\s+)?long\s+long|
541 int\s+long\s+long\s+(?:un)?signed|
542 int\s+(?:(?:un)?signed\s+)?long\s+long|
543
544 long\s+int\s+(?:un)?signed|
545 long\s+(?:un)?signed\s+int|
546 long\s+(?:un)?signed|
547 (?:(?:un)?signed\s+)?long\s+int|
548 (?:(?:un)?signed\s+)?long|
549 int\s+long\s+(?:un)?signed|
550 int\s+(?:(?:un)?signed\s+)?long|
551
552 int\s+(?:un)?signed|
553 (?:(?:un)?signed\s+)?int
554)};
555
556our @typeListFile = ();
557our @typeListWithAttr = (
558 @typeList,
559 qr{struct\s+$InitAttribute\s+$Ident},
560 qr{union\s+$InitAttribute\s+$Ident},
561);
562
563our @modifierList = (
564 qr{fastcall},
565);
566our @modifierListFile = ();
567
568our @mode_permission_funcs = (
569 ["module_param", 3],
570 ["module_param_(?:array|named|string)", 4],
571 ["module_param_array_named", 5],
572 ["debugfs_create_(?:file|u8|u16|u32|u64|x8|x16|x32|x64|size_t|atomic_t|bool|blob|regset32|u32_array)", 2],
573 ["proc_create(?:_data|)", 2],
574 ["(?:CLASS|DEVICE|SENSOR|SENSOR_DEVICE|IIO_DEVICE)_ATTR", 2],
575 ["IIO_DEV_ATTR_[A-Z_]+", 1],
576 ["SENSOR_(?:DEVICE_|)ATTR_2", 2],
577 ["SENSOR_TEMPLATE(?:_2|)", 3],
578 ["__ATTR", 2],
579);
580
581#Create a search pattern for all these functions to speed up a loop below
582our $mode_perms_search = "";
583foreach my $entry (@mode_permission_funcs) {
584 $mode_perms_search .= '|' if ($mode_perms_search ne "");
585 $mode_perms_search .= $entry->[0];
586}
587$mode_perms_search = "(?:${mode_perms_search})";
588
589our %deprecated_apis = (
590 "synchronize_rcu_bh" => "synchronize_rcu",
591 "synchronize_rcu_bh_expedited" => "synchronize_rcu_expedited",
592 "call_rcu_bh" => "call_rcu",
593 "rcu_barrier_bh" => "rcu_barrier",
594 "synchronize_sched" => "synchronize_rcu",
595 "synchronize_sched_expedited" => "synchronize_rcu_expedited",
596 "call_rcu_sched" => "call_rcu",
597 "rcu_barrier_sched" => "rcu_barrier",
598 "get_state_synchronize_sched" => "get_state_synchronize_rcu",
599 "cond_synchronize_sched" => "cond_synchronize_rcu",
600);
601
602#Create a search pattern for all these strings to speed up a loop below
603our $deprecated_apis_search = "";
604foreach my $entry (keys %deprecated_apis) {
605 $deprecated_apis_search .= '|' if ($deprecated_apis_search ne "");
606 $deprecated_apis_search .= $entry;
607}
608$deprecated_apis_search = "(?:${deprecated_apis_search})";
609
610our $mode_perms_world_writable = qr{
611 S_IWUGO |
612 S_IWOTH |
613 S_IRWXUGO |
614 S_IALLUGO |
615 0[0-7][0-7][2367]
616}x;
617
618our %mode_permission_string_types = (
619 "S_IRWXU" => 0700,
620 "S_IRUSR" => 0400,
621 "S_IWUSR" => 0200,
622 "S_IXUSR" => 0100,
623 "S_IRWXG" => 0070,
624 "S_IRGRP" => 0040,
625 "S_IWGRP" => 0020,
626 "S_IXGRP" => 0010,
627 "S_IRWXO" => 0007,
628 "S_IROTH" => 0004,
629 "S_IWOTH" => 0002,
630 "S_IXOTH" => 0001,
631 "S_IRWXUGO" => 0777,
632 "S_IRUGO" => 0444,
633 "S_IWUGO" => 0222,
634 "S_IXUGO" => 0111,
635);
636
637#Create a search pattern for all these strings to speed up a loop below
638our $mode_perms_string_search = "";
639foreach my $entry (keys %mode_permission_string_types) {
640 $mode_perms_string_search .= '|' if ($mode_perms_string_search ne "");
641 $mode_perms_string_search .= $entry;
642}
643our $single_mode_perms_string_search = "(?:${mode_perms_string_search})";
644our $multi_mode_perms_string_search = qr{
645 ${single_mode_perms_string_search}
646 (?:\s*\|\s*${single_mode_perms_string_search})*
647}x;
648
649sub perms_to_octal {
650 my ($string) = @_;
651
652 return trim($string) if ($string =~ /^\s*0[0-7]{3,3}\s*$/);
653
654 my $val = "";
655 my $oval = "";
656 my $to = 0;
657 my $curpos = 0;
658 my $lastpos = 0;
659 while ($string =~ /\b(($single_mode_perms_string_search)\b(?:\s*\|\s*)?\s*)/g) {
660 $curpos = pos($string);
661 my $match = $2;
662 my $omatch = $1;
663 last if ($lastpos > 0 && ($curpos - length($omatch) != $lastpos));
664 $lastpos = $curpos;
665 $to |= $mode_permission_string_types{$match};
666 $val .= '\s*\|\s*' if ($val ne "");
667 $val .= $match;
668 $oval .= $omatch;
669 }
670 $oval =~ s/^\s*\|\s*//;
671 $oval =~ s/\s*\|\s*$//;
672 return sprintf("%04o", $to);
673}
674
675our $allowed_asm_includes = qr{(?x:
676 irq|
677 memory|
678 time|
679 reboot
680)};
681# memory.h: ARM has a custom one
682
683# Load common spelling mistakes and build regular expression list.
684my $misspellings;
685my %spelling_fix;
686
687if (open(my $spelling, '<', $spelling_file)) {
688 while (<$spelling>) {
689 my $line = $_;
690
691 $line =~ s/\s*\n?$//g;
692 $line =~ s/^\s*//g;
693
694 next if ($line =~ m/^\s*#/);
695 next if ($line =~ m/^\s*$/);
696
697 my ($suspect, $fix) = split(/\|\|/, $line);
698
699 $spelling_fix{$suspect} = $fix;
700 }
701 close($spelling);
702} else {
703 warn "No typos will be found - file '$spelling_file': $!\n";
704}
705
706if ($codespell) {
707 if (open(my $spelling, '<', $codespellfile)) {
708 while (<$spelling>) {
709 my $line = $_;
710
711 $line =~ s/\s*\n?$//g;
712 $line =~ s/^\s*//g;
713
714 next if ($line =~ m/^\s*#/);
715 next if ($line =~ m/^\s*$/);
716 next if ($line =~ m/, disabled/i);
717
718 $line =~ s/,.*$//;
719
720 my ($suspect, $fix) = split(/->/, $line);
721
722 $spelling_fix{$suspect} = $fix;
723 }
724 close($spelling);
725 } else {
726 warn "No codespell typos will be found - file '$codespellfile': $!\n";
727 }
728}
729
730$misspellings = join("|", sort keys %spelling_fix) if keys %spelling_fix;
731
732sub read_words {
733 my ($wordsRef, $file) = @_;
734
735 if (open(my $words, '<', $file)) {
736 while (<$words>) {
737 my $line = $_;
738
739 $line =~ s/\s*\n?$//g;
740 $line =~ s/^\s*//g;
741
742 next if ($line =~ m/^\s*#/);
743 next if ($line =~ m/^\s*$/);
744 if ($line =~ /\s/) {
745 print("$file: '$line' invalid - ignored\n");
746 next;
747 }
748
749 $$wordsRef .= '|' if ($$wordsRef ne "");
750 $$wordsRef .= $line;
751 }
752 close($file);
753 return 1;
754 }
755
756 return 0;
757}
758
759my $const_structs = "";
760read_words(\$const_structs, $conststructsfile)
761 or warn "No structs that should be const will be found - file '$conststructsfile': $!\n";
762
763my $typeOtherTypedefs = "";
764if (length($typedefsfile)) {
765 read_words(\$typeOtherTypedefs, $typedefsfile)
766 or warn "No additional types will be considered - file '$typedefsfile': $!\n";
767}
768$typeTypedefs .= '|' . $typeOtherTypedefs if ($typeOtherTypedefs ne "");
769
770sub build_types {
771 my $mods = "(?x: \n" . join("|\n ", (@modifierList, @modifierListFile)) . "\n)";
772 my $all = "(?x: \n" . join("|\n ", (@typeList, @typeListFile)) . "\n)";
773 my $Misordered = "(?x: \n" . join("|\n ", @typeListMisordered) . "\n)";
774 my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)";
775 $Modifier = qr{(?:$Attribute|$Sparse|$mods)};
776 $BasicType = qr{
777 (?:$typeTypedefs\b)|
778 (?:${all}\b)
779 }x;
780 $NonptrType = qr{
781 (?:$Modifier\s+|const\s+)*
782 (?:
783 (?:typeof|__typeof__)\s*\([^\)]*\)|
784 (?:$typeTypedefs\b)|
785 (?:${all}\b)
786 )
787 (?:\s+$Modifier|\s+const)*
788 }x;
789 $NonptrTypeMisordered = qr{
790 (?:$Modifier\s+|const\s+)*
791 (?:
792 (?:${Misordered}\b)
793 )
794 (?:\s+$Modifier|\s+const)*
795 }x;
796 $NonptrTypeWithAttr = qr{
797 (?:$Modifier\s+|const\s+)*
798 (?:
799 (?:typeof|__typeof__)\s*\([^\)]*\)|
800 (?:$typeTypedefs\b)|
801 (?:${allWithAttr}\b)
802 )
803 (?:\s+$Modifier|\s+const)*
804 }x;
805 $Type = qr{
806 $NonptrType
807 (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+)?
808 (?:\s+$Inline|\s+$Modifier)*
809 }x;
810 $TypeMisordered = qr{
811 $NonptrTypeMisordered
812 (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+)?
813 (?:\s+$Inline|\s+$Modifier)*
814 }x;
815 $Declare = qr{(?:$Storage\s+(?:$Inline\s+)?)?$Type};
816 $DeclareMisordered = qr{(?:$Storage\s+(?:$Inline\s+)?)?$TypeMisordered};
817}
818build_types();
819
820our $Typecast = qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
821
822# Using $balanced_parens, $LvalOrFunc, or $FuncArg
823# requires at least perl version v5.10.0
824# Any use must be runtime checked with $^V
825
826our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
827our $LvalOrFunc = qr{((?:[\&\*]\s*)?$Lval)\s*($balanced_parens{0,1})\s*};
828our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant|$String)};
829
830our $declaration_macros = qr{(?x:
831 (?:$Storage\s+)?(?:[A-Z_][A-Z0-9]*_){0,2}(?:DEFINE|DECLARE)(?:_[A-Z0-9]+){1,6}\s*\(|
832 (?:$Storage\s+)?[HLP]?LIST_HEAD\s*\(|
833 (?:$Storage\s+)?${Type}\s+uninitialized_var\s*\(|
834 (?:SKCIPHER_REQUEST|SHASH_DESC|AHASH_REQUEST)_ON_STACK\s*\(
835)};
836
837sub deparenthesize {
838 my ($string) = @_;
839 return "" if (!defined($string));
840
841 while ($string =~ /^\s*\(.*\)\s*$/) {
842 $string =~ s@^\s*\(\s*@@;
843 $string =~ s@\s*\)\s*$@@;
844 }
845
846 $string =~ s@\s+@ @g;
847
848 return $string;
849}
850
851sub seed_camelcase_file {
852 my ($file) = @_;
853
854 return if (!(-f $file));
855
856 local $/;
857
858 open(my $include_file, '<', "$file")
859 or warn "$P: Can't read '$file' $!\n";
860 my $text = <$include_file>;
861 close($include_file);
862
863 my @lines = split('\n', $text);
864
865 foreach my $line (@lines) {
866 next if ($line !~ /(?:[A-Z][a-z]|[a-z][A-Z])/);
867 if ($line =~ /^[ \t]*(?:#[ \t]*define|typedef\s+$Type)\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)/) {
868 $camelcase{$1} = 1;
869 } elsif ($line =~ /^\s*$Declare\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*[\(\[,;]/) {
870 $camelcase{$1} = 1;
871 } elsif ($line =~ /^\s*(?:union|struct|enum)\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*[;\{]/) {
872 $camelcase{$1} = 1;
873 }
874 }
875}
876
877sub is_maintained_obsolete {
878 my ($filename) = @_;
879
880 return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
881
882 my $status = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
883
884 return $status =~ /obsolete/i;
885}
886
887sub is_SPDX_License_valid {
888 my ($license) = @_;
889
890 return 1 if (!$tree || which("python") eq "" || !(-e "$root/scripts/spdxcheck.py") || !(-e "$root/.git"));
891
892 my $root_path = abs_path($root);
893 my $status = `cd "$root_path"; echo "$license" | python scripts/spdxcheck.py -`;
894 return 0 if ($status ne "");
895 return 1;
896}
897
898my $camelcase_seeded = 0;
899sub seed_camelcase_includes {
900 return if ($camelcase_seeded);
901
902 my $files;
903 my $camelcase_cache = "";
904 my @include_files = ();
905
906 $camelcase_seeded = 1;
907
908 if (-e ".git") {
909 my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
910 chomp $git_last_include_commit;
911 $camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
912 } else {
913 my $last_mod_date = 0;
914 $files = `find $root/include -name "*.h"`;
915 @include_files = split('\n', $files);
916 foreach my $file (@include_files) {
917 my $date = POSIX::strftime("%Y%m%d%H%M",
918 localtime((stat $file)[9]));
919 $last_mod_date = $date if ($last_mod_date < $date);
920 }
921 $camelcase_cache = ".checkpatch-camelcase.date.$last_mod_date";
922 }
923
924 if ($camelcase_cache ne "" && -f $camelcase_cache) {
925 open(my $camelcase_file, '<', "$camelcase_cache")
926 or warn "$P: Can't read '$camelcase_cache' $!\n";
927 while (<$camelcase_file>) {
928 chomp;
929 $camelcase{$_} = 1;
930 }
931 close($camelcase_file);
932
933 return;
934 }
935
936 if (-e ".git") {
937 $files = `${git_command} ls-files "include/*.h"`;
938 @include_files = split('\n', $files);
939 }
940
941 foreach my $file (@include_files) {
942 seed_camelcase_file($file);
943 }
944
945 if ($camelcase_cache ne "") {
946 unlink glob ".checkpatch-camelcase.*";
947 open(my $camelcase_file, '>', "$camelcase_cache")
948 or warn "$P: Can't write '$camelcase_cache' $!\n";
949 foreach (sort { lc($a) cmp lc($b) } keys(%camelcase)) {
950 print $camelcase_file ("$_\n");
951 }
952 close($camelcase_file);
953 }
954}
955
956sub git_commit_info {
957 my ($commit, $id, $desc) = @_;
958
959 return ($id, $desc) if ((which("git") eq "") || !(-e ".git"));
960
961 my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
962 $output =~ s/^\s*//gm;
963 my @lines = split("\n", $output);
964
965 return ($id, $desc) if ($#lines < 0);
966
967 if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous/) {
968# Maybe one day convert this block of bash into something that returns
969# all matching commit ids, but it's very slow...
970#
971# echo "checking commits $1..."
972# git rev-list --remotes | grep -i "^$1" |
973# while read line ; do
974# git log --format='%H %s' -1 $line |
975# echo "commit $(cut -c 1-12,41-)"
976# done
977 } elsif ($lines[0] =~ /^fatal: ambiguous argument '$commit': unknown revision or path not in the working tree\./) {
978 $id = undef;
979 } else {
980 $id = substr($lines[0], 0, 12);
981 $desc = substr($lines[0], 41);
982 }
983
984 return ($id, $desc);
985}
986
987$chk_signoff = 0 if ($file);
988
989my @rawlines = ();
990my @lines = ();
991my @fixed = ();
992my @fixed_inserted = ();
993my @fixed_deleted = ();
994my $fixlinenr = -1;
995
996# If input is git commits, extract all commits from the commit expressions.
997# For example, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2'.
998die "$P: No git repository found\n" if ($git && !-e ".git");
999
1000if ($git) {
1001 my @commits = ();
1002 foreach my $commit_expr (@ARGV) {
1003 my $git_range;
1004 if ($commit_expr =~ m/^(.*)-(\d+)$/) {
1005 $git_range = "-$2 $1";
1006 } elsif ($commit_expr =~ m/\.\./) {
1007 $git_range = "$commit_expr";
1008 } else {
1009 $git_range = "-1 $commit_expr";
1010 }
1011 my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
1012 foreach my $line (split(/\n/, $lines)) {
1013 $line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
1014 next if (!defined($1) || !defined($2));
1015 my $sha1 = $1;
1016 my $subject = $2;
1017 unshift(@commits, $sha1);
1018 $git_commits{$sha1} = $subject;
1019 }
1020 }
1021 die "$P: no git commits after extraction!\n" if (@commits == 0);
1022 @ARGV = @commits;
1023}
1024
1025my $vname;
1026$allow_c99_comments = !defined $ignore_type{"C99_COMMENT_TOLERANCE"};
1027for my $filename (@ARGV) {
1028 my $FILE;
1029 if ($git) {
1030 open($FILE, '-|', "git format-patch -M --stdout -1 $filename") ||
1031 die "$P: $filename: git format-patch failed - $!\n";
1032 } elsif ($file) {
1033 open($FILE, '-|', "diff -u /dev/null $filename") ||
1034 die "$P: $filename: diff failed - $!\n";
1035 } elsif ($filename eq '-') {
1036 open($FILE, '<&STDIN');
1037 } else {
1038 open($FILE, '<', "$filename") ||
1039 die "$P: $filename: open failed - $!\n";
1040 }
1041 if ($filename eq '-') {
1042 $vname = 'Your patch';
1043 } elsif ($git) {
1044 $vname = "Commit " . substr($filename, 0, 12) . ' ("' . $git_commits{$filename} . '")';
1045 } else {
1046 $vname = $filename;
1047 }
1048 while (<$FILE>) {
1049 chomp;
1050 push(@rawlines, $_);
1051 }
1052 close($FILE);
1053
1054 if ($#ARGV > 0 && $quiet == 0) {
1055 print '-' x length($vname) . "\n";
1056 print "$vname\n";
1057 print '-' x length($vname) . "\n";
1058 }
1059
1060 if (!process($filename)) {
1061 $exit = 1;
1062 }
1063 @rawlines = ();
1064 @lines = ();
1065 @fixed = ();
1066 @fixed_inserted = ();
1067 @fixed_deleted = ();
1068 $fixlinenr = -1;
1069 @modifierListFile = ();
1070 @typeListFile = ();
1071 build_types();
1072}
1073
1074if (!$quiet) {
1075 hash_show_words(\%use_type, "Used");
1076 hash_show_words(\%ignore_type, "Ignored");
1077
1078 if (!$perl_version_ok) {
1079 print << "EOM"
1080
1081NOTE: perl $^V is not modern enough to detect all possible issues.
1082 An upgrade to at least perl $minimum_perl_version is suggested.
1083EOM
1084 }
1085 if ($exit) {
1086 print << "EOM"
1087
1088NOTE: If any of the errors are false positives, please report
1089 them to the maintainer, see CHECKPATCH in MAINTAINERS.
1090EOM
1091 }
1092}
1093
1094exit($exit);
1095
1096sub top_of_kernel_tree {
1097 my ($root) = @_;
1098
1099 my @tree_check = (
1100 "COPYING", "CREDITS", "Kbuild", "MAINTAINERS", "Makefile",
1101 "README", "Documentation", "arch", "include", "drivers",
1102 "fs", "init", "ipc", "kernel", "lib", "scripts",
1103 );
1104
1105 foreach my $check (@tree_check) {
1106 if (! -e $root . '/' . $check) {
1107 return 0;
1108 }
1109 }
1110 return 1;
1111}
1112
1113sub parse_email {
1114 my ($formatted_email) = @_;
1115
1116 my $name = "";
1117 my $address = "";
1118 my $comment = "";
1119
1120 if ($formatted_email =~ /^(.*)<(\S+\@\S+)>(.*)$/) {
1121 $name = $1;
1122 $address = $2;
1123 $comment = $3 if defined $3;
1124 } elsif ($formatted_email =~ /^\s*<(\S+\@\S+)>(.*)$/) {
1125 $address = $1;
1126 $comment = $2 if defined $2;
1127 } elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
1128 $address = $1;
1129 $comment = $2 if defined $2;
1130 $formatted_email =~ s/\Q$address\E.*$//;
1131 $name = $formatted_email;
1132 $name = trim($name);
1133 $name =~ s/^\"|\"$//g;
1134 # If there's a name left after stripping spaces and
1135 # leading quotes, and the address doesn't have both
1136 # leading and trailing angle brackets, the address
1137 # is invalid. ie:
1138 # "joe smith joe@smith.com" bad
1139 # "joe smith <joe@smith.com" bad
1140 if ($name ne "" && $address !~ /^<[^>]+>$/) {
1141 $name = "";
1142 $address = "";
1143 $comment = "";
1144 }
1145 }
1146
1147 $name = trim($name);
1148 $name =~ s/^\"|\"$//g;
1149 $address = trim($address);
1150 $address =~ s/^\<|\>$//g;
1151
1152 if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
1153 $name =~ s/(?<!\\)"/\\"/g; ##escape quotes
1154 $name = "\"$name\"";
1155 }
1156
1157 return ($name, $address, $comment);
1158}
1159
1160sub format_email {
1161 my ($name, $address) = @_;
1162
1163 my $formatted_email;
1164
1165 $name = trim($name);
1166 $name =~ s/^\"|\"$//g;
1167 $address = trim($address);
1168
1169 if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
1170 $name =~ s/(?<!\\)"/\\"/g; ##escape quotes
1171 $name = "\"$name\"";
1172 }
1173
1174 if ("$name" eq "") {
1175 $formatted_email = "$address";
1176 } else {
1177 $formatted_email = "$name <$address>";
1178 }
1179
1180 return $formatted_email;
1181}
1182
1183sub which {
1184 my ($bin) = @_;
1185
1186 foreach my $path (split(/:/, $ENV{PATH})) {
1187 if (-e "$path/$bin") {
1188 return "$path/$bin";
1189 }
1190 }
1191
1192 return "";
1193}
1194
1195sub which_conf {
1196 my ($conf) = @_;
1197
1198 foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
1199 if (-e "$path/$conf") {
1200 return "$path/$conf";
1201 }
1202 }
1203
1204 return "";
1205}
1206
1207sub expand_tabs {
1208 my ($str) = @_;
1209
1210 my $res = '';
1211 my $n = 0;
1212 for my $c (split(//, $str)) {
1213 if ($c eq "\t") {
1214 $res .= ' ';
1215 $n++;
1216 for (; ($n % 8) != 0; $n++) {
1217 $res .= ' ';
1218 }
1219 next;
1220 }
1221 $res .= $c;
1222 $n++;
1223 }
1224
1225 return $res;
1226}
1227sub copy_spacing {
1228 (my $res = shift) =~ tr/\t/ /c;
1229 return $res;
1230}
1231
1232sub line_stats {
1233 my ($line) = @_;
1234
1235 # Drop the diff line leader and expand tabs
1236 $line =~ s/^.//;
1237 $line = expand_tabs($line);
1238
1239 # Pick the indent from the front of the line.
1240 my ($white) = ($line =~ /^(\s*)/);
1241
1242 return (length($line), length($white));
1243}
1244
1245my $sanitise_quote = '';
1246
1247sub sanitise_line_reset {
1248 my ($in_comment) = @_;
1249
1250 if ($in_comment) {
1251 $sanitise_quote = '*/';
1252 } else {
1253 $sanitise_quote = '';
1254 }
1255}
1256sub sanitise_line {
1257 my ($line) = @_;
1258
1259 my $res = '';
1260 my $l = '';
1261
1262 my $qlen = 0;
1263 my $off = 0;
1264 my $c;
1265
1266 # Always copy over the diff marker.
1267 $res = substr($line, 0, 1);
1268
1269 for ($off = 1; $off < length($line); $off++) {
1270 $c = substr($line, $off, 1);
1271
1272 # Comments we are whacking completely including the begin
1273 # and end, all to $;.
1274 if ($sanitise_quote eq '' && substr($line, $off, 2) eq '/*') {
1275 $sanitise_quote = '*/';
1276
1277 substr($res, $off, 2, "$;$;");
1278 $off++;
1279 next;
1280 }
1281 if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') {
1282 $sanitise_quote = '';
1283 substr($res, $off, 2, "$;$;");
1284 $off++;
1285 next;
1286 }
1287 if ($sanitise_quote eq '' && substr($line, $off, 2) eq '//') {
1288 $sanitise_quote = '//';
1289
1290 substr($res, $off, 2, $sanitise_quote);
1291 $off++;
1292 next;
1293 }
1294
1295 # A \ in a string means ignore the next character.
1296 if (($sanitise_quote eq "'" || $sanitise_quote eq '"') &&
1297 $c eq "\\") {
1298 substr($res, $off, 2, 'XX');
1299 $off++;
1300 next;
1301 }
1302 # Regular quotes.
1303 if ($c eq "'" || $c eq '"') {
1304 if ($sanitise_quote eq '') {
1305 $sanitise_quote = $c;
1306
1307 substr($res, $off, 1, $c);
1308 next;
1309 } elsif ($sanitise_quote eq $c) {
1310 $sanitise_quote = '';
1311 }
1312 }
1313
1314 #print "c<$c> SQ<$sanitise_quote>\n";
1315 if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") {
1316 substr($res, $off, 1, $;);
1317 } elsif ($off != 0 && $sanitise_quote eq '//' && $c ne "\t") {
1318 substr($res, $off, 1, $;);
1319 } elsif ($off != 0 && $sanitise_quote && $c ne "\t") {
1320 substr($res, $off, 1, 'X');
1321 } else {
1322 substr($res, $off, 1, $c);
1323 }
1324 }
1325
1326 if ($sanitise_quote eq '//') {
1327 $sanitise_quote = '';
1328 }
1329
1330 # The pathname on a #include may be surrounded by '<' and '>'.
1331 if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) {
1332 my $clean = 'X' x length($1);
1333 $res =~ s@\<.*\>@<$clean>@;
1334
1335 # The whole of a #error is a string.
1336 } elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) {
1337 my $clean = 'X' x length($1);
1338 $res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
1339 }
1340
1341 if ($allow_c99_comments && $res =~ m@(//.*$)@) {
1342 my $match = $1;
1343 $res =~ s/\Q$match\E/"$;" x length($match)/e;
1344 }
1345
1346 return $res;
1347}
1348
1349sub get_quoted_string {
1350 my ($line, $rawline) = @_;
1351
1352 return "" if (!defined($line) || !defined($rawline));
1353 return "" if ($line !~ m/($String)/g);
1354 return substr($rawline, $-[0], $+[0] - $-[0]);
1355}
1356
1357sub ctx_statement_block {
1358 my ($linenr, $remain, $off) = @_;
1359 my $line = $linenr - 1;
1360 my $blk = '';
1361 my $soff = $off;
1362 my $coff = $off - 1;
1363 my $coff_set = 0;
1364
1365 my $loff = 0;
1366
1367 my $type = '';
1368 my $level = 0;
1369 my @stack = ();
1370 my $p;
1371 my $c;
1372 my $len = 0;
1373
1374 my $remainder;
1375 while (1) {
1376 @stack = (['', 0]) if ($#stack == -1);
1377
1378 #warn "CSB: blk<$blk> remain<$remain>\n";
1379 # If we are about to drop off the end, pull in more
1380 # context.
1381 if ($off >= $len) {
1382 for (; $remain > 0; $line++) {
1383 last if (!defined $lines[$line]);
1384 next if ($lines[$line] =~ /^-/);
1385 $remain--;
1386 $loff = $len;
1387 $blk .= $lines[$line] . "\n";
1388 $len = length($blk);
1389 $line++;
1390 last;
1391 }
1392 # Bail if there is no further context.
1393 #warn "CSB: blk<$blk> off<$off> len<$len>\n";
1394 if ($off >= $len) {
1395 last;
1396 }
1397 if ($level == 0 && substr($blk, $off) =~ /^.\s*#\s*define/) {
1398 $level++;
1399 $type = '#';
1400 }
1401 }
1402 $p = $c;
1403 $c = substr($blk, $off, 1);
1404 $remainder = substr($blk, $off);
1405
1406 #warn "CSB: c<$c> type<$type> level<$level> remainder<$remainder> coff_set<$coff_set>\n";
1407
1408 # Handle nested #if/#else.
1409 if ($remainder =~ /^#\s*(?:ifndef|ifdef|if)\s/) {
1410 push(@stack, [ $type, $level ]);
1411 } elsif ($remainder =~ /^#\s*(?:else|elif)\b/) {
1412 ($type, $level) = @{$stack[$#stack - 1]};
1413 } elsif ($remainder =~ /^#\s*endif\b/) {
1414 ($type, $level) = @{pop(@stack)};
1415 }
1416
1417 # Statement ends at the ';' or a close '}' at the
1418 # outermost level.
1419 if ($level == 0 && $c eq ';') {
1420 last;
1421 }
1422
1423 # An else is really a conditional as long as its not else if
1424 if ($level == 0 && $coff_set == 0 &&
1425 (!defined($p) || $p =~ /(?:\s|\}|\+)/) &&
1426 $remainder =~ /^(else)(?:\s|{)/ &&
1427 $remainder !~ /^else\s+if\b/) {
1428 $coff = $off + length($1) - 1;
1429 $coff_set = 1;
1430 #warn "CSB: mark coff<$coff> soff<$soff> 1<$1>\n";
1431 #warn "[" . substr($blk, $soff, $coff - $soff + 1) . "]\n";
1432 }
1433
1434 if (($type eq '' || $type eq '(') && $c eq '(') {
1435 $level++;
1436 $type = '(';
1437 }
1438 if ($type eq '(' && $c eq ')') {
1439 $level--;
1440 $type = ($level != 0)? '(' : '';
1441
1442 if ($level == 0 && $coff < $soff) {
1443 $coff = $off;
1444 $coff_set = 1;
1445 #warn "CSB: mark coff<$coff>\n";
1446 }
1447 }
1448 if (($type eq '' || $type eq '{') && $c eq '{') {
1449 $level++;
1450 $type = '{';
1451 }
1452 if ($type eq '{' && $c eq '}') {
1453 $level--;
1454 $type = ($level != 0)? '{' : '';
1455
1456 if ($level == 0) {
1457 if (substr($blk, $off + 1, 1) eq ';') {
1458 $off++;
1459 }
1460 last;
1461 }
1462 }
1463 # Preprocessor commands end at the newline unless escaped.
1464 if ($type eq '#' && $c eq "\n" && $p ne "\\") {
1465 $level--;
1466 $type = '';
1467 $off++;
1468 last;
1469 }
1470 $off++;
1471 }
1472 # We are truly at the end, so shuffle to the next line.
1473 if ($off == $len) {
1474 $loff = $len + 1;
1475 $line++;
1476 $remain--;
1477 }
1478
1479 my $statement = substr($blk, $soff, $off - $soff + 1);
1480 my $condition = substr($blk, $soff, $coff - $soff + 1);
1481
1482 #warn "STATEMENT<$statement>\n";
1483 #warn "CONDITION<$condition>\n";
1484
1485 #print "coff<$coff> soff<$off> loff<$loff>\n";
1486
1487 return ($statement, $condition,
1488 $line, $remain + 1, $off - $loff + 1, $level);
1489}
1490
1491sub statement_lines {
1492 my ($stmt) = @_;
1493
1494 # Strip the diff line prefixes and rip blank lines at start and end.
1495 $stmt =~ s/(^|\n)./$1/g;
1496 $stmt =~ s/^\s*//;
1497 $stmt =~ s/\s*$//;
1498
1499 my @stmt_lines = ($stmt =~ /\n/g);
1500
1501 return $#stmt_lines + 2;
1502}
1503
1504sub statement_rawlines {
1505 my ($stmt) = @_;
1506
1507 my @stmt_lines = ($stmt =~ /\n/g);
1508
1509 return $#stmt_lines + 2;
1510}
1511
1512sub statement_block_size {
1513 my ($stmt) = @_;
1514
1515 $stmt =~ s/(^|\n)./$1/g;
1516 $stmt =~ s/^\s*{//;
1517 $stmt =~ s/}\s*$//;
1518 $stmt =~ s/^\s*//;
1519 $stmt =~ s/\s*$//;
1520
1521 my @stmt_lines = ($stmt =~ /\n/g);
1522 my @stmt_statements = ($stmt =~ /;/g);
1523
1524 my $stmt_lines = $#stmt_lines + 2;
1525 my $stmt_statements = $#stmt_statements + 1;
1526
1527 if ($stmt_lines > $stmt_statements) {
1528 return $stmt_lines;
1529 } else {
1530 return $stmt_statements;
1531 }
1532}
1533
1534sub ctx_statement_full {
1535 my ($linenr, $remain, $off) = @_;
1536 my ($statement, $condition, $level);
1537
1538 my (@chunks);
1539
1540 # Grab the first conditional/block pair.
1541 ($statement, $condition, $linenr, $remain, $off, $level) =
1542 ctx_statement_block($linenr, $remain, $off);
1543 #print "F: c<$condition> s<$statement> remain<$remain>\n";
1544 push(@chunks, [ $condition, $statement ]);
1545 if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) {
1546 return ($level, $linenr, @chunks);
1547 }
1548
1549 # Pull in the following conditional/block pairs and see if they
1550 # could continue the statement.
1551 for (;;) {
1552 ($statement, $condition, $linenr, $remain, $off, $level) =
1553 ctx_statement_block($linenr, $remain, $off);
1554 #print "C: c<$condition> s<$statement> remain<$remain>\n";
1555 last if (!($remain > 0 && $condition =~ /^(?:\s*\n[+-])*\s*(?:else|do)\b/s));
1556 #print "C: push\n";
1557 push(@chunks, [ $condition, $statement ]);
1558 }
1559
1560 return ($level, $linenr, @chunks);
1561}
1562
1563sub ctx_block_get {
1564 my ($linenr, $remain, $outer, $open, $close, $off) = @_;
1565 my $line;
1566 my $start = $linenr - 1;
1567 my $blk = '';
1568 my @o;
1569 my @c;
1570 my @res = ();
1571
1572 my $level = 0;
1573 my @stack = ($level);
1574 for ($line = $start; $remain > 0; $line++) {
1575 next if ($rawlines[$line] =~ /^-/);
1576 $remain--;
1577
1578 $blk .= $rawlines[$line];
1579
1580 # Handle nested #if/#else.
1581 if ($lines[$line] =~ /^.\s*#\s*(?:ifndef|ifdef|if)\s/) {
1582 push(@stack, $level);
1583 } elsif ($lines[$line] =~ /^.\s*#\s*(?:else|elif)\b/) {
1584 $level = $stack[$#stack - 1];
1585 } elsif ($lines[$line] =~ /^.\s*#\s*endif\b/) {
1586 $level = pop(@stack);
1587 }
1588
1589 foreach my $c (split(//, $lines[$line])) {
1590 ##print "C<$c>L<$level><$open$close>O<$off>\n";
1591 if ($off > 0) {
1592 $off--;
1593 next;
1594 }
1595
1596 if ($c eq $close && $level > 0) {
1597 $level--;
1598 last if ($level == 0);
1599 } elsif ($c eq $open) {
1600 $level++;
1601 }
1602 }
1603
1604 if (!$outer || $level <= 1) {
1605 push(@res, $rawlines[$line]);
1606 }
1607
1608 last if ($level == 0);
1609 }
1610
1611 return ($level, @res);
1612}
1613sub ctx_block_outer {
1614 my ($linenr, $remain) = @_;
1615
1616 my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0);
1617 return @r;
1618}
1619sub ctx_block {
1620 my ($linenr, $remain) = @_;
1621
1622 my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0);
1623 return @r;
1624}
1625sub ctx_statement {
1626 my ($linenr, $remain, $off) = @_;
1627
1628 my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off);
1629 return @r;
1630}
1631sub ctx_block_level {
1632 my ($linenr, $remain) = @_;
1633
1634 return ctx_block_get($linenr, $remain, 0, '{', '}', 0);
1635}
1636sub ctx_statement_level {
1637 my ($linenr, $remain, $off) = @_;
1638
1639 return ctx_block_get($linenr, $remain, 0, '(', ')', $off);
1640}
1641
1642sub ctx_locate_comment {
1643 my ($first_line, $end_line) = @_;
1644
1645 # Catch a comment on the end of the line itself.
1646 my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
1647 return $current_comment if (defined $current_comment);
1648
1649 # Look through the context and try and figure out if there is a
1650 # comment.
1651 my $in_comment = 0;
1652 $current_comment = '';
1653 for (my $linenr = $first_line; $linenr < $end_line; $linenr++) {
1654 my $line = $rawlines[$linenr - 1];
1655 #warn " $line\n";
1656 if ($linenr == $first_line and $line =~ m@^.\s*\*@) {
1657 $in_comment = 1;
1658 }
1659 if ($line =~ m@/\*@) {
1660 $in_comment = 1;
1661 }
1662 if (!$in_comment && $current_comment ne '') {
1663 $current_comment = '';
1664 }
1665 $current_comment .= $line . "\n" if ($in_comment);
1666 if ($line =~ m@\*/@) {
1667 $in_comment = 0;
1668 }
1669 }
1670
1671 chomp($current_comment);
1672 return($current_comment);
1673}
1674sub ctx_has_comment {
1675 my ($first_line, $end_line) = @_;
1676 my $cmt = ctx_locate_comment($first_line, $end_line);
1677
1678 ##print "LINE: $rawlines[$end_line - 1 ]\n";
1679 ##print "CMMT: $cmt\n";
1680
1681 return ($cmt ne '');
1682}
1683
1684sub raw_line {
1685 my ($linenr, $cnt) = @_;
1686
1687 my $offset = $linenr - 1;
1688 $cnt++;
1689
1690 my $line;
1691 while ($cnt) {
1692 $line = $rawlines[$offset++];
1693 next if (defined($line) && $line =~ /^-/);
1694 $cnt--;
1695 }
1696
1697 return $line;
1698}
1699
1700sub get_stat_real {
1701 my ($linenr, $lc) = @_;
1702
1703 my $stat_real = raw_line($linenr, 0);
1704 for (my $count = $linenr + 1; $count <= $lc; $count++) {
1705 $stat_real = $stat_real . "\n" . raw_line($count, 0);
1706 }
1707
1708 return $stat_real;
1709}
1710
1711sub get_stat_here {
1712 my ($linenr, $cnt, $here) = @_;
1713
1714 my $herectx = $here . "\n";
1715 for (my $n = 0; $n < $cnt; $n++) {
1716 $herectx .= raw_line($linenr, $n) . "\n";
1717 }
1718
1719 return $herectx;
1720}
1721
1722sub cat_vet {
1723 my ($vet) = @_;
1724 my ($res, $coded);
1725
1726 $res = '';
1727 while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) {
1728 $res .= $1;
1729 if ($2 ne '') {
1730 $coded = sprintf("^%c", unpack('C', $2) + 64);
1731 $res .= $coded;
1732 }
1733 }
1734 $res =~ s/$/\$/;
1735
1736 return $res;
1737}
1738
1739my $av_preprocessor = 0;
1740my $av_pending;
1741my @av_paren_type;
1742my $av_pend_colon;
1743
1744sub annotate_reset {
1745 $av_preprocessor = 0;
1746 $av_pending = '_';
1747 @av_paren_type = ('E');
1748 $av_pend_colon = 'O';
1749}
1750
1751sub annotate_values {
1752 my ($stream, $type) = @_;
1753
1754 my $res;
1755 my $var = '_' x length($stream);
1756 my $cur = $stream;
1757
1758 print "$stream\n" if ($dbg_values > 1);
1759
1760 while (length($cur)) {
1761 @av_paren_type = ('E') if ($#av_paren_type < 0);
1762 print " <" . join('', @av_paren_type) .
1763 "> <$type> <$av_pending>" if ($dbg_values > 1);
1764 if ($cur =~ /^(\s+)/o) {
1765 print "WS($1)\n" if ($dbg_values > 1);
1766 if ($1 =~ /\n/ && $av_preprocessor) {
1767 $type = pop(@av_paren_type);
1768 $av_preprocessor = 0;
1769 }
1770
1771 } elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') {
1772 print "CAST($1)\n" if ($dbg_values > 1);
1773 push(@av_paren_type, $type);
1774 $type = 'c';
1775
1776 } elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) {
1777 print "DECLARE($1)\n" if ($dbg_values > 1);
1778 $type = 'T';
1779
1780 } elsif ($cur =~ /^($Modifier)\s*/) {
1781 print "MODIFIER($1)\n" if ($dbg_values > 1);
1782 $type = 'T';
1783
1784 } elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) {
1785 print "DEFINE($1,$2)\n" if ($dbg_values > 1);
1786 $av_preprocessor = 1;
1787 push(@av_paren_type, $type);
1788 if ($2 ne '') {
1789 $av_pending = 'N';
1790 }
1791 $type = 'E';
1792
1793 } elsif ($cur =~ /^(\#\s*(?:undef\s*$Ident|include\b))/o) {
1794 print "UNDEF($1)\n" if ($dbg_values > 1);
1795 $av_preprocessor = 1;
1796 push(@av_paren_type, $type);
1797
1798 } elsif ($cur =~ /^(\#\s*(?:ifdef|ifndef|if))/o) {
1799 print "PRE_START($1)\n" if ($dbg_values > 1);
1800 $av_preprocessor = 1;
1801
1802 push(@av_paren_type, $type);
1803 push(@av_paren_type, $type);
1804 $type = 'E';
1805
1806 } elsif ($cur =~ /^(\#\s*(?:else|elif))/o) {
1807 print "PRE_RESTART($1)\n" if ($dbg_values > 1);
1808 $av_preprocessor = 1;
1809
1810 push(@av_paren_type, $av_paren_type[$#av_paren_type]);
1811
1812 $type = 'E';
1813
1814 } elsif ($cur =~ /^(\#\s*(?:endif))/o) {
1815 print "PRE_END($1)\n" if ($dbg_values > 1);
1816
1817 $av_preprocessor = 1;
1818
1819 # Assume all arms of the conditional end as this
1820 # one does, and continue as if the #endif was not here.
1821 pop(@av_paren_type);
1822 push(@av_paren_type, $type);
1823 $type = 'E';
1824
1825 } elsif ($cur =~ /^(\\\n)/o) {
1826 print "PRECONT($1)\n" if ($dbg_values > 1);
1827
1828 } elsif ($cur =~ /^(__attribute__)\s*\(?/o) {
1829 print "ATTR($1)\n" if ($dbg_values > 1);
1830 $av_pending = $type;
1831 $type = 'N';
1832
1833 } elsif ($cur =~ /^(sizeof)\s*(\()?/o) {
1834 print "SIZEOF($1)\n" if ($dbg_values > 1);
1835 if (defined $2) {
1836 $av_pending = 'V';
1837 }
1838 $type = 'N';
1839
1840 } elsif ($cur =~ /^(if|while|for)\b/o) {
1841 print "COND($1)\n" if ($dbg_values > 1);
1842 $av_pending = 'E';
1843 $type = 'N';
1844
1845 } elsif ($cur =~/^(case)/o) {
1846 print "CASE($1)\n" if ($dbg_values > 1);
1847 $av_pend_colon = 'C';
1848 $type = 'N';
1849
1850 } elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) {
1851 print "KEYWORD($1)\n" if ($dbg_values > 1);
1852 $type = 'N';
1853
1854 } elsif ($cur =~ /^(\()/o) {
1855 print "PAREN('$1')\n" if ($dbg_values > 1);
1856 push(@av_paren_type, $av_pending);
1857 $av_pending = '_';
1858 $type = 'N';
1859
1860 } elsif ($cur =~ /^(\))/o) {
1861 my $new_type = pop(@av_paren_type);
1862 if ($new_type ne '_') {
1863 $type = $new_type;
1864 print "PAREN('$1') -> $type\n"
1865 if ($dbg_values > 1);
1866 } else {
1867 print "PAREN('$1')\n" if ($dbg_values > 1);
1868 }
1869
1870 } elsif ($cur =~ /^($Ident)\s*\(/o) {
1871 print "FUNC($1)\n" if ($dbg_values > 1);
1872 $type = 'V';
1873 $av_pending = 'V';
1874
1875 } elsif ($cur =~ /^($Ident\s*):(?:\s*\d+\s*(,|=|;))?/) {
1876 if (defined $2 && $type eq 'C' || $type eq 'T') {
1877 $av_pend_colon = 'B';
1878 } elsif ($type eq 'E') {
1879 $av_pend_colon = 'L';
1880 }
1881 print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1);
1882 $type = 'V';
1883
1884 } elsif ($cur =~ /^($Ident|$Constant)/o) {
1885 print "IDENT($1)\n" if ($dbg_values > 1);
1886 $type = 'V';
1887
1888 } elsif ($cur =~ /^($Assignment)/o) {
1889 print "ASSIGN($1)\n" if ($dbg_values > 1);
1890 $type = 'N';
1891
1892 } elsif ($cur =~/^(;|{|})/) {
1893 print "END($1)\n" if ($dbg_values > 1);
1894 $type = 'E';
1895 $av_pend_colon = 'O';
1896
1897 } elsif ($cur =~/^(,)/) {
1898 print "COMMA($1)\n" if ($dbg_values > 1);
1899 $type = 'C';
1900
1901 } elsif ($cur =~ /^(\?)/o) {
1902 print "QUESTION($1)\n" if ($dbg_values > 1);
1903 $type = 'N';
1904
1905 } elsif ($cur =~ /^(:)/o) {
1906 print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1);
1907
1908 substr($var, length($res), 1, $av_pend_colon);
1909 if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') {
1910 $type = 'E';
1911 } else {
1912 $type = 'N';
1913 }
1914 $av_pend_colon = 'O';
1915
1916 } elsif ($cur =~ /^(\[)/o) {
1917 print "CLOSE($1)\n" if ($dbg_values > 1);
1918 $type = 'N';
1919
1920 } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) {
1921 my $variant;
1922
1923 print "OPV($1)\n" if ($dbg_values > 1);
1924 if ($type eq 'V') {
1925 $variant = 'B';
1926 } else {
1927 $variant = 'U';
1928 }
1929
1930 substr($var, length($res), 1, $variant);
1931 $type = 'N';
1932
1933 } elsif ($cur =~ /^($Operators)/o) {
1934 print "OP($1)\n" if ($dbg_values > 1);
1935 if ($1 ne '++' && $1 ne '--') {
1936 $type = 'N';
1937 }
1938
1939 } elsif ($cur =~ /(^.)/o) {
1940 print "C($1)\n" if ($dbg_values > 1);
1941 }
1942 if (defined $1) {
1943 $cur = substr($cur, length($1));
1944 $res .= $type x length($1);
1945 }
1946 }
1947
1948 return ($res, $var);
1949}
1950
1951sub possible {
1952 my ($possible, $line) = @_;
1953 my $notPermitted = qr{(?:
1954 ^(?:
1955 $Modifier|
1956 $Storage|
1957 $Type|
1958 DEFINE_\S+
1959 )$|
1960 ^(?:
1961 goto|
1962 return|
1963 case|
1964 else|
1965 asm|__asm__|
1966 do|
1967 \#|
1968 \#\#|
1969 )(?:\s|$)|
1970 ^(?:typedef|struct|enum)\b
1971 )}x;
1972 warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
1973 if ($possible !~ $notPermitted) {
1974 # Check for modifiers.
1975 $possible =~ s/\s*$Storage\s*//g;
1976 $possible =~ s/\s*$Sparse\s*//g;
1977 if ($possible =~ /^\s*$/) {
1978
1979 } elsif ($possible =~ /\s/) {
1980 $possible =~ s/\s*$Type\s*//g;
1981 for my $modifier (split(' ', $possible)) {
1982 if ($modifier !~ $notPermitted) {
1983 warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible);
1984 push(@modifierListFile, $modifier);
1985 }
1986 }
1987
1988 } else {
1989 warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible);
1990 push(@typeListFile, $possible);
1991 }
1992 build_types();
1993 } else {
1994 warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1);
1995 }
1996}
1997
1998my $prefix = '';
1999
2000sub show_type {
2001 my ($type) = @_;
2002
2003 $type =~ tr/[a-z]/[A-Z]/;
2004
2005 return defined $use_type{$type} if (scalar keys %use_type > 0);
2006
2007 return !defined $ignore_type{$type};
2008}
2009
2010sub report {
2011 my ($level, $type, $msg) = @_;
2012
2013 if (!show_type($type) ||
2014 (defined $tst_only && $msg !~ /\Q$tst_only\E/)) {
2015 return 0;
2016 }
2017 my $output = '';
2018 if ($color) {
2019 if ($level eq 'ERROR') {
2020 $output .= RED;
2021 } elsif ($level eq 'WARNING') {
2022 $output .= YELLOW;
2023 } else {
2024 $output .= GREEN;
2025 }
2026 }
2027 $output .= $prefix . $level . ':';
2028 if ($show_types) {
2029 $output .= BLUE if ($color);
2030 $output .= "$type:";
2031 }
2032 $output .= RESET if ($color);
2033 $output .= ' ' . $msg . "\n";
2034
2035 if ($showfile) {
2036 my @lines = split("\n", $output, -1);
2037 splice(@lines, 1, 1);
2038 $output = join("\n", @lines);
2039 }
2040 $output = (split('\n', $output))[0] . "\n" if ($terse);
2041
2042 push(our @report, $output);
2043
2044 return 1;
2045}
2046
2047sub report_dump {
2048 our @report;
2049}
2050
2051sub fixup_current_range {
2052 my ($lineRef, $offset, $length) = @_;
2053
2054 if ($$lineRef =~ /^\@\@ -\d+,\d+ \+(\d+),(\d+) \@\@/) {
2055 my $o = $1;
2056 my $l = $2;
2057 my $no = $o + $offset;
2058 my $nl = $l + $length;
2059 $$lineRef =~ s/\+$o,$l \@\@/\+$no,$nl \@\@/;
2060 }
2061}
2062
2063sub fix_inserted_deleted_lines {
2064 my ($linesRef, $insertedRef, $deletedRef) = @_;
2065
2066 my $range_last_linenr = 0;
2067 my $delta_offset = 0;
2068
2069 my $old_linenr = 0;
2070 my $new_linenr = 0;
2071
2072 my $next_insert = 0;
2073 my $next_delete = 0;
2074
2075 my @lines = ();
2076
2077 my $inserted = @{$insertedRef}[$next_insert++];
2078 my $deleted = @{$deletedRef}[$next_delete++];
2079
2080 foreach my $old_line (@{$linesRef}) {
2081 my $save_line = 1;
2082 my $line = $old_line; #don't modify the array
2083 if ($line =~ /^(?:\+\+\+|\-\-\-)\s+\S+/) { #new filename
2084 $delta_offset = 0;
2085 } elsif ($line =~ /^\@\@ -\d+,\d+ \+\d+,\d+ \@\@/) { #new hunk
2086 $range_last_linenr = $new_linenr;
2087 fixup_current_range(\$line, $delta_offset, 0);
2088 }
2089
2090 while (defined($deleted) && ${$deleted}{'LINENR'} == $old_linenr) {
2091 $deleted = @{$deletedRef}[$next_delete++];
2092 $save_line = 0;
2093 fixup_current_range(\$lines[$range_last_linenr], $delta_offset--, -1);
2094 }
2095
2096 while (defined($inserted) && ${$inserted}{'LINENR'} == $old_linenr) {
2097 push(@lines, ${$inserted}{'LINE'});
2098 $inserted = @{$insertedRef}[$next_insert++];
2099 $new_linenr++;
2100 fixup_current_range(\$lines[$range_last_linenr], $delta_offset++, 1);
2101 }
2102
2103 if ($save_line) {
2104 push(@lines, $line);
2105 $new_linenr++;
2106 }
2107
2108 $old_linenr++;
2109 }
2110
2111 return @lines;
2112}
2113
2114sub fix_insert_line {
2115 my ($linenr, $line) = @_;
2116
2117 my $inserted = {
2118 LINENR => $linenr,
2119 LINE => $line,
2120 };
2121 push(@fixed_inserted, $inserted);
2122}
2123
2124sub fix_delete_line {
2125 my ($linenr, $line) = @_;
2126
2127 my $deleted = {
2128 LINENR => $linenr,
2129 LINE => $line,
2130 };
2131
2132 push(@fixed_deleted, $deleted);
2133}
2134
2135sub ERROR {
2136 my ($type, $msg) = @_;
2137
2138 if (report("ERROR", $type, $msg)) {
2139 our $clean = 0;
2140 our $cnt_error++;
2141 return 1;
2142 }
2143 return 0;
2144}
2145sub WARN {
2146 my ($type, $msg) = @_;
2147
2148 if (report("WARNING", $type, $msg)) {
2149 our $clean = 0;
2150 our $cnt_warn++;
2151 return 1;
2152 }
2153 return 0;
2154}
2155sub CHK {
2156 my ($type, $msg) = @_;
2157
2158 if ($check && report("CHECK", $type, $msg)) {
2159 our $clean = 0;
2160 our $cnt_chk++;
2161 return 1;
2162 }
2163 return 0;
2164}
2165
2166sub check_absolute_file {
2167 my ($absolute, $herecurr) = @_;
2168 my $file = $absolute;
2169
2170 ##print "absolute<$absolute>\n";
2171
2172 # See if any suffix of this path is a path within the tree.
2173 while ($file =~ s@^[^/]*/@@) {
2174 if (-f "$root/$file") {
2175 ##print "file<$file>\n";
2176 last;
2177 }
2178 }
2179 if (! -f _) {
2180 return 0;
2181 }
2182
2183 # It is, so see if the prefix is acceptable.
2184 my $prefix = $absolute;
2185 substr($prefix, -length($file)) = '';
2186
2187 ##print "prefix<$prefix>\n";
2188 if ($prefix ne ".../") {
2189 WARN("USE_RELATIVE_PATH",
2190 "use relative pathname instead of absolute in changelog text\n" . $herecurr);
2191 }
2192}
2193
2194sub trim {
2195 my ($string) = @_;
2196
2197 $string =~ s/^\s+|\s+$//g;
2198
2199 return $string;
2200}
2201
2202sub ltrim {
2203 my ($string) = @_;
2204
2205 $string =~ s/^\s+//;
2206
2207 return $string;
2208}
2209
2210sub rtrim {
2211 my ($string) = @_;
2212
2213 $string =~ s/\s+$//;
2214
2215 return $string;
2216}
2217
2218sub string_find_replace {
2219 my ($string, $find, $replace) = @_;
2220
2221 $string =~ s/$find/$replace/g;
2222
2223 return $string;
2224}
2225
2226sub tabify {
2227 my ($leading) = @_;
2228
2229 my $source_indent = 8;
2230 my $max_spaces_before_tab = $source_indent - 1;
2231 my $spaces_to_tab = " " x $source_indent;
2232
2233 #convert leading spaces to tabs
2234 1 while $leading =~ s@^([\t]*)$spaces_to_tab@$1\t@g;
2235 #Remove spaces before a tab
2236 1 while $leading =~ s@^([\t]*)( {1,$max_spaces_before_tab})\t@$1\t@g;
2237
2238 return "$leading";
2239}
2240
2241sub pos_last_openparen {
2242 my ($line) = @_;
2243
2244 my $pos = 0;
2245
2246 my $opens = $line =~ tr/\(/\(/;
2247 my $closes = $line =~ tr/\)/\)/;
2248
2249 my $last_openparen = 0;
2250
2251 if (($opens == 0) || ($closes >= $opens)) {
2252 return -1;
2253 }
2254
2255 my $len = length($line);
2256
2257 for ($pos = 0; $pos < $len; $pos++) {
2258 my $string = substr($line, $pos);
2259 if ($string =~ /^($FuncArg|$balanced_parens)/) {
2260 $pos += length($1) - 1;
2261 } elsif (substr($line, $pos, 1) eq '(') {
2262 $last_openparen = $pos;
2263 } elsif (index($string, '(') == -1) {
2264 last;
2265 }
2266 }
2267
2268 return length(expand_tabs(substr($line, 0, $last_openparen))) + 1;
2269}
2270
2271sub process {
2272 my $filename = shift;
2273
2274 my $linenr=0;
2275 my $prevline="";
2276 my $prevrawline="";
2277 my $stashline="";
2278 my $stashrawline="";
2279
2280 my $length;
2281 my $indent;
2282 my $previndent=0;
2283 my $stashindent=0;
2284
2285 our $clean = 1;
2286 my $signoff = 0;
2287 my $author = '';
2288 my $authorsignoff = 0;
2289 my $is_patch = 0;
2290 my $is_binding_patch = -1;
2291 my $in_header_lines = $file ? 0 : 1;
2292 my $in_commit_log = 0; #Scanning lines before patch
2293 my $has_commit_log = 0; #Encountered lines before patch
2294 my $commit_log_lines = 0; #Number of commit log lines
2295 my $commit_log_possible_stack_dump = 0;
2296 my $commit_log_long_line = 0;
2297 my $commit_log_has_diff = 0;
2298 my $reported_maintainer_file = 0;
2299 my $non_utf8_charset = 0;
2300
2301 my $last_blank_line = 0;
2302 my $last_coalesced_string_linenr = -1;
2303
2304 our @report = ();
2305 our $cnt_lines = 0;
2306 our $cnt_error = 0;
2307 our $cnt_warn = 0;
2308 our $cnt_chk = 0;
2309
2310 # Trace the real file/line as we go.
2311 my $realfile = '';
2312 my $realline = 0;
2313 my $realcnt = 0;
2314 my $here = '';
2315 my $context_function; #undef'd unless there's a known function
2316 my $in_comment = 0;
2317 my $comment_edge = 0;
2318 my $first_line = 0;
2319 my $p1_prefix = '';
2320
2321 my $prev_values = 'E';
2322
2323 # suppression flags
2324 my %suppress_ifbraces;
2325 my %suppress_whiletrailers;
2326 my %suppress_export;
2327 my $suppress_statement = 0;
2328
2329 my %signatures = ();
2330
2331 # Pre-scan the patch sanitizing the lines.
2332 # Pre-scan the patch looking for any __setup documentation.
2333 #
2334 my @setup_docs = ();
2335 my $setup_docs = 0;
2336
2337 my $camelcase_file_seeded = 0;
2338
2339 my $checklicenseline = 1;
2340
2341 sanitise_line_reset();
2342 my $line;
2343 foreach my $rawline (@rawlines) {
2344 $linenr++;
2345 $line = $rawline;
2346
2347 push(@fixed, $rawline) if ($fix);
2348
2349 if ($rawline=~/^\+\+\+\s+(\S+)/) {
2350 $setup_docs = 0;
2351 if ($1 =~ m@Documentation/admin-guide/kernel-parameters.rst$@) {
2352 $setup_docs = 1;
2353 }
2354 #next;
2355 }
2356 if ($rawline =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
2357 $realline=$1-1;
2358 if (defined $2) {
2359 $realcnt=$3+1;
2360 } else {
2361 $realcnt=1+1;
2362 }
2363 $in_comment = 0;
2364
2365 # Guestimate if this is a continuing comment. Run
2366 # the context looking for a comment "edge". If this
2367 # edge is a close comment then we must be in a comment
2368 # at context start.
2369 my $edge;
2370 my $cnt = $realcnt;
2371 for (my $ln = $linenr + 1; $cnt > 0; $ln++) {
2372 next if (defined $rawlines[$ln - 1] &&
2373 $rawlines[$ln - 1] =~ /^-/);
2374 $cnt--;
2375 #print "RAW<$rawlines[$ln - 1]>\n";
2376 last if (!defined $rawlines[$ln - 1]);
2377 if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ &&
2378 $rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) {
2379 ($edge) = $1;
2380 last;
2381 }
2382 }
2383 if (defined $edge && $edge eq '*/') {
2384 $in_comment = 1;
2385 }
2386
2387 # Guestimate if this is a continuing comment. If this
2388 # is the start of a diff block and this line starts
2389 # ' *' then it is very likely a comment.
2390 if (!defined $edge &&
2391 $rawlines[$linenr] =~ m@^.\s*(?:\*\*+| \*)(?:\s|$)@)
2392 {
2393 $in_comment = 1;
2394 }
2395
2396 ##print "COMMENT:$in_comment edge<$edge> $rawline\n";
2397 sanitise_line_reset($in_comment);
2398
2399 } elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) {
2400 # Standardise the strings and chars within the input to
2401 # simplify matching -- only bother with positive lines.
2402 $line = sanitise_line($rawline);
2403 }
2404 push(@lines, $line);
2405
2406 if ($realcnt > 1) {
2407 $realcnt-- if ($line =~ /^(?:\+| |$)/);
2408 } else {
2409 $realcnt = 0;
2410 }
2411
2412 #print "==>$rawline\n";
2413 #print "-->$line\n";
2414
2415 if ($setup_docs && $line =~ /^\+/) {
2416 push(@setup_docs, $line);
2417 }
2418 }
2419
2420 $prefix = '';
2421
2422 $realcnt = 0;
2423 $linenr = 0;
2424 $fixlinenr = -1;
2425 foreach my $line (@lines) {
2426 $linenr++;
2427 $fixlinenr++;
2428 my $sline = $line; #copy of $line
2429 $sline =~ s/$;/ /g; #with comments as spaces
2430
2431 my $rawline = $rawlines[$linenr - 1];
2432
2433# check if it's a mode change, rename or start of a patch
2434 if (!$in_commit_log &&
2435 ($line =~ /^ mode change [0-7]+ => [0-7]+ \S+\s*$/ ||
2436 ($line =~ /^rename (?:from|to) \S+\s*$/ ||
2437 $line =~ /^diff --git a\/[\w\/\.\_\-]+ b\/\S+\s*$/))) {
2438 $is_patch = 1;
2439 }
2440
2441#extract the line range in the file after the patch is applied
2442 if (!$in_commit_log &&
2443 $line =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@(.*)/) {
2444 my $context = $4;
2445 $is_patch = 1;
2446 $first_line = $linenr + 1;
2447 $realline=$1-1;
2448 if (defined $2) {
2449 $realcnt=$3+1;
2450 } else {
2451 $realcnt=1+1;
2452 }
2453 annotate_reset();
2454 $prev_values = 'E';
2455
2456 %suppress_ifbraces = ();
2457 %suppress_whiletrailers = ();
2458 %suppress_export = ();
2459 $suppress_statement = 0;
2460 if ($context =~ /\b(\w+)\s*\(/) {
2461 $context_function = $1;
2462 } else {
2463 undef $context_function;
2464 }
2465 next;
2466
2467# track the line number as we move through the hunk, note that
2468# new versions of GNU diff omit the leading space on completely
2469# blank context lines so we need to count that too.
2470 } elsif ($line =~ /^( |\+|$)/) {
2471 $realline++;
2472 $realcnt-- if ($realcnt != 0);
2473
2474 # Measure the line length and indent.
2475 ($length, $indent) = line_stats($rawline);
2476
2477 # Track the previous line.
2478 ($prevline, $stashline) = ($stashline, $line);
2479 ($previndent, $stashindent) = ($stashindent, $indent);
2480 ($prevrawline, $stashrawline) = ($stashrawline, $rawline);
2481
2482 #warn "line<$line>\n";
2483
2484 } elsif ($realcnt == 1) {
2485 $realcnt--;
2486 }
2487
2488 my $hunk_line = ($realcnt != 0);
2489
2490 $here = "#$linenr: " if (!$file);
2491 $here = "#$realline: " if ($file);
2492
2493 my $found_file = 0;
2494 # extract the filename as it passes
2495 if ($line =~ /^diff --git.*?(\S+)$/) {
2496 $realfile = $1;
2497 $realfile =~ s@^([^/]*)/@@ if (!$file);
2498 $in_commit_log = 0;
2499 $found_file = 1;
2500 } elsif ($line =~ /^\+\+\+\s+(\S+)/) {
2501 $realfile = $1;
2502 $realfile =~ s@^([^/]*)/@@ if (!$file);
2503 $in_commit_log = 0;
2504
2505 $p1_prefix = $1;
2506 if (!$file && $tree && $p1_prefix ne '' &&
2507 -e "$root/$p1_prefix") {
2508 WARN("PATCH_PREFIX",
2509 "patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
2510 }
2511
2512 if ($realfile =~ m@^include/asm/@) {
2513 ERROR("MODIFIED_INCLUDE_ASM",
2514 "do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
2515 }
2516 $found_file = 1;
2517 }
2518
2519#make up the handle for any error we report on this line
2520 if ($showfile) {
2521 $prefix = "$realfile:$realline: "
2522 } elsif ($emacs) {
2523 if ($file) {
2524 $prefix = "$filename:$realline: ";
2525 } else {
2526 $prefix = "$filename:$linenr: ";
2527 }
2528 }
2529
2530 if ($found_file) {
2531 if (is_maintained_obsolete($realfile)) {
2532 WARN("OBSOLETE",
2533 "$realfile is marked as 'obsolete' in the MAINTAINERS hierarchy. No unnecessary modifications please.\n");
2534 }
2535 if ($realfile =~ m@^(?:drivers/net/|net/|drivers/staging/)@) {
2536 $check = 1;
2537 } else {
2538 $check = $check_orig;
2539 }
2540 $checklicenseline = 1;
2541
2542 if ($realfile !~ /^MAINTAINERS/) {
2543 my $last_binding_patch = $is_binding_patch;
2544
2545 $is_binding_patch = () = $realfile =~ m@^(?:Documentation/devicetree/|include/dt-bindings/)@;
2546
2547 if (($last_binding_patch != -1) &&
2548 ($last_binding_patch ^ $is_binding_patch)) {
2549 WARN("DT_SPLIT_BINDING_PATCH",
2550 "DT binding docs and includes should be a separate patch. See: Documentation/devicetree/bindings/submitting-patches.txt\n");
2551 }
2552 }
2553
2554 next;
2555 }
2556
2557 $here .= "FILE: $realfile:$realline:" if ($realcnt != 0);
2558
2559 my $hereline = "$here\n$rawline\n";
2560 my $herecurr = "$here\n$rawline\n";
2561 my $hereprev = "$here\n$prevrawline\n$rawline\n";
2562
2563 $cnt_lines++ if ($realcnt != 0);
2564
2565# Verify the existence of a commit log if appropriate
2566# 2 is used because a $signature is counted in $commit_log_lines
2567 if ($in_commit_log) {
2568 if ($line !~ /^\s*$/) {
2569 $commit_log_lines++; #could be a $signature
2570 }
2571 } elsif ($has_commit_log && $commit_log_lines < 2) {
2572 WARN("COMMIT_MESSAGE",
2573 "Missing commit description - Add an appropriate one\n");
2574 $commit_log_lines = 2; #warn only once
2575 }
2576
2577# Check if the commit log has what seems like a diff which can confuse patch
2578 if ($in_commit_log && !$commit_log_has_diff &&
2579 (($line =~ m@^\s+diff\b.*a/([\w/]+)@ &&
2580 $line =~ m@^\s+diff\b.*a/[\w/]+\s+b/$1\b@) ||
2581 $line =~ m@^\s*(?:\-\-\-\s+a/|\+\+\+\s+b/)@ ||
2582 $line =~ m/^\s*\@\@ \-\d+,\d+ \+\d+,\d+ \@\@/)) {
2583 ERROR("DIFF_IN_COMMIT_MSG",
2584 "Avoid using diff content in the commit message - patch(1) might not work\n" . $herecurr);
2585 $commit_log_has_diff = 1;
2586 }
2587
2588# Check for incorrect file permissions
2589 if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
2590 my $permhere = $here . "FILE: $realfile\n";
2591 if ($realfile !~ m@scripts/@ &&
2592 $realfile !~ /\.(py|pl|awk|sh)$/) {
2593 ERROR("EXECUTE_PERMISSIONS",
2594 "do not set execute permissions for source files\n" . $permhere);
2595 }
2596 }
2597
2598# Check the patch for a From:
2599 if (decode("MIME-Header", $line) =~ /^From:\s*(.*)/) {
2600 $author = $1;
2601 $author = encode("utf8", $author) if ($line =~ /=\?utf-8\?/i);
2602 $author =~ s/"//g;
2603 }
2604
2605# Check the patch for a signoff:
2606 if ($line =~ /^\s*signed-off-by:/i) {
2607 $signoff++;
2608 $in_commit_log = 0;
2609 if ($author ne '') {
2610 my $l = $line;
2611 $l =~ s/"//g;
2612 if ($l =~ /^\s*signed-off-by:\s*\Q$author\E/i) {
2613 $authorsignoff = 1;
2614 }
2615 }
2616 }
2617
2618# Check if MAINTAINERS is being updated. If so, there's probably no need to
2619# emit the "does MAINTAINERS need updating?" message on file add/move/delete
2620 if ($line =~ /^\s*MAINTAINERS\s*\|/) {
2621 $reported_maintainer_file = 1;
2622 }
2623
2624# Check signature styles
2625 if (!$in_header_lines &&
2626 $line =~ /^(\s*)([a-z0-9_-]+by:|$signature_tags)(\s*)(.*)/i) {
2627 my $space_before = $1;
2628 my $sign_off = $2;
2629 my $space_after = $3;
2630 my $email = $4;
2631 my $ucfirst_sign_off = ucfirst(lc($sign_off));
2632
2633 if ($sign_off !~ /$signature_tags/) {
2634 WARN("BAD_SIGN_OFF",
2635 "Non-standard signature: $sign_off\n" . $herecurr);
2636 }
2637 if (defined $space_before && $space_before ne "") {
2638 if (WARN("BAD_SIGN_OFF",
2639 "Do not use whitespace before $ucfirst_sign_off\n" . $herecurr) &&
2640 $fix) {
2641 $fixed[$fixlinenr] =
2642 "$ucfirst_sign_off $email";
2643 }
2644 }
2645 if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
2646 if (WARN("BAD_SIGN_OFF",
2647 "'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr) &&
2648 $fix) {
2649 $fixed[$fixlinenr] =
2650 "$ucfirst_sign_off $email";
2651 }
2652
2653 }
2654 if (!defined $space_after || $space_after ne " ") {
2655 if (WARN("BAD_SIGN_OFF",
2656 "Use a single space after $ucfirst_sign_off\n" . $herecurr) &&
2657 $fix) {
2658 $fixed[$fixlinenr] =
2659 "$ucfirst_sign_off $email";
2660 }
2661 }
2662
2663 my ($email_name, $email_address, $comment) = parse_email($email);
2664 my $suggested_email = format_email(($email_name, $email_address));
2665 if ($suggested_email eq "") {
2666 ERROR("BAD_SIGN_OFF",
2667 "Unrecognized email address: '$email'\n" . $herecurr);
2668 } else {
2669 my $dequoted = $suggested_email;
2670 $dequoted =~ s/^"//;
2671 $dequoted =~ s/" </ </;
2672 # Don't force email to have quotes
2673 # Allow just an angle bracketed address
2674 if ("$dequoted$comment" ne $email &&
2675 "<$email_address>$comment" ne $email &&
2676 "$suggested_email$comment" ne $email) {
2677 WARN("BAD_SIGN_OFF",
2678 "email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
2679 }
2680 }
2681
2682# Check for duplicate signatures
2683 my $sig_nospace = $line;
2684 $sig_nospace =~ s/\s//g;
2685 $sig_nospace = lc($sig_nospace);
2686 if (defined $signatures{$sig_nospace}) {
2687 WARN("BAD_SIGN_OFF",
2688 "Duplicate signature\n" . $herecurr);
2689 } else {
2690 $signatures{$sig_nospace} = 1;
2691 }
2692
2693# Check Co-developed-by: immediately followed by Signed-off-by: with same name and email
2694 if ($sign_off =~ /^co-developed-by:$/i) {
2695 if ($email eq $author) {
2696 WARN("BAD_SIGN_OFF",
2697 "Co-developed-by: should not be used to attribute nominal patch author '$author'\n" . "$here\n" . $rawline);
2698 }
2699 if (!defined $lines[$linenr]) {
2700 WARN("BAD_SIGN_OFF",
2701 "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline);
2702 } elsif ($rawlines[$linenr] !~ /^\s*signed-off-by:\s*(.*)/i) {
2703 WARN("BAD_SIGN_OFF",
2704 "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
2705 } elsif ($1 ne $email) {
2706 WARN("BAD_SIGN_OFF",
2707 "Co-developed-by and Signed-off-by: name/email do not match \n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
2708 }
2709 }
2710 }
2711
2712# Check email subject for common tools that don't need to be mentioned
2713 if ($in_header_lines &&
2714 $line =~ /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {
2715 WARN("EMAIL_SUBJECT",
2716 "A patch subject line should describe the change not the tool that found it\n" . $herecurr);
2717 }
2718
2719# Check for unwanted Gerrit info
2720 if ($in_commit_log && $line =~ /^\s*change-id:/i) {
2721 ERROR("GERRIT_CHANGE_ID",
2722 "Remove Gerrit Change-Id's before submitting upstream.\n" . $herecurr);
2723 }
2724
2725# Check if the commit log is in a possible stack dump
2726 if ($in_commit_log && !$commit_log_possible_stack_dump &&
2727 ($line =~ /^\s*(?:WARNING:|BUG:)/ ||
2728 $line =~ /^\s*\[\s*\d+\.\d{6,6}\s*\]/ ||
2729 # timestamp
2730 $line =~ /^\s*\[\<[0-9a-fA-F]{8,}\>\]/) ||
2731 $line =~ /^(?:\s+\w+:\s+[0-9a-fA-F]+){3,3}/ ||
2732 $line =~ /^\s*\#\d+\s*\[[0-9a-fA-F]+\]\s*\w+ at [0-9a-fA-F]+/) {
2733 # stack dump address styles
2734 $commit_log_possible_stack_dump = 1;
2735 }
2736
2737# Check for line lengths > 75 in commit log, warn once
2738 if ($in_commit_log && !$commit_log_long_line &&
2739 length($line) > 75 &&
2740 !($line =~ /^\s*[a-zA-Z0-9_\/\.]+\s+\|\s+\d+/ ||
2741 # file delta changes
2742 $line =~ /^\s*(?:[\w\.\-]+\/)++[\w\.\-]+:/ ||
2743 # filename then :
2744 $line =~ /^\s*(?:Fixes:|Link:)/i ||
2745 # A Fixes: or Link: line
2746 $commit_log_possible_stack_dump)) {
2747 WARN("COMMIT_LOG_LONG_LINE",
2748 "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
2749 $commit_log_long_line = 1;
2750 }
2751
2752# Reset possible stack dump if a blank line is found
2753 if ($in_commit_log && $commit_log_possible_stack_dump &&
2754 $line =~ /^\s*$/) {
2755 $commit_log_possible_stack_dump = 0;
2756 }
2757
2758# Check for git id commit length and improperly formed commit descriptions
2759 if ($in_commit_log && !$commit_log_possible_stack_dump &&
2760 $line !~ /^\s*(?:Link|Patchwork|http|https|BugLink):/i &&
2761 $line !~ /^This reverts commit [0-9a-f]{7,40}/ &&
2762 ($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
2763 ($line =~ /(?:\s|^)[0-9a-f]{12,40}(?:[\s"'\(\[]|$)/i &&
2764 $line !~ /[\<\[][0-9a-f]{12,40}[\>\]]/i &&
2765 $line !~ /\bfixes:\s*[0-9a-f]{12,40}/i))) {
2766 my $init_char = "c";
2767 my $orig_commit = "";
2768 my $short = 1;
2769 my $long = 0;
2770 my $case = 1;
2771 my $space = 1;
2772 my $hasdesc = 0;
2773 my $hasparens = 0;
2774 my $id = '0123456789ab';
2775 my $orig_desc = "commit description";
2776 my $description = "";
2777
2778 if ($line =~ /\b(c)ommit\s+([0-9a-f]{5,})\b/i) {
2779 $init_char = $1;
2780 $orig_commit = lc($2);
2781 } elsif ($line =~ /\b([0-9a-f]{12,40})\b/i) {
2782 $orig_commit = lc($1);
2783 }
2784
2785 $short = 0 if