2 # SPDX-License-Identifier: GPL-2.0
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>
15 use Term::ANSIColor qw(:constants);
16 use Encode qw(decode encode);
19 my $D = dirname(abs_path($P));
23 use Getopt::Long qw(:config no_auto_abbrev);
25 # ATTENTION: easily track modification to this script for OpenOCD.
26 # When possible, don't modify the existing code, don't change its indentation,
27 # but remove it enclosing it within:
33 # Mark every addition within comments
34 # # OpenOCD specific: Begin[: additional comment]
35 # # OpenOCD specific: End
40 my %verbose_messages = ();
41 my %verbose_emitted = ();
62 my $gitroot = $ENV{'GIT_DIR'};
63 $gitroot = ".git" if !defined($gitroot);
71 my $configuration_file = ".checkpatch.conf";
72 my $max_line_length = 100;
73 my $ignore_perl_version = 0;
74 my $minimum_perl_version = 5.10.0;
75 my $min_conf_desc_length = 4;
76 my $spelling_file = "$D/spelling.txt";
78 my $codespellfile = "/usr/share/codespell/dictionary.txt";
79 my $user_codespellfile = "";
80 my $conststructsfile = "$D/const_structs.checkpatch";
81 my $docsfile = "$D/../Documentation/dev-tools/checkpatch.rst";
84 my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
85 # git output parsing needs US English output, so first set backtick child process LANGUAGE
86 my $git_command ='export LANGUAGE=en_US.UTF-8; git';
88 my ${CONFIG_} = "CONFIG_";
94 Usage: $P [OPTION]... [FILE]...
99 -v, --verbose verbose mode
100 --no-tree run without an OpenOCD tree
101 --no-signoff do not check for 'Signed-off-by' line
102 --patch treat FILE as patchfile (default)
103 --emacs emacs compile window format
104 --terse one line per report
105 --showfile emit diffed file position, not input file position
106 -g, --git treat FILE as a single commit or git revision range
107 single git commit with:
111 multiple git commits with:
115 git merges are ignored
116 -f, --file treat FILE as regular source file
117 --subjective, --strict enable more subjective tests
118 --list-types list the possible message types
119 --types TYPE(,TYPE2...) show only these comma separated message types
120 --ignore TYPE(,TYPE2...) ignore various comma separated message types
121 --show-types show the specific message type in the output
122 --max-line-length=n set the maximum line length, (default $max_line_length)
123 if exceeded, warn on patches
124 requires --strict for use with --file
125 --min-conf-desc-length=n set the min description length, if shorter, warn
126 --tab-size=n set the number of spaces for tab (default $tabsize)
127 --root=PATH PATH to the OpenOCD tree root
128 --no-summary suppress the per-file summary
129 --mailback only produce a report in case of warnings/errors
130 --summary-file include the filename in summary
131 --debug KEY=[0|1] turn on/off debugging of KEY, where KEY is one of
132 'values', 'possible', 'type', and 'attr' (default
134 --test-only=WORD report only warnings/errors containing WORD
136 --fix EXPERIMENTAL - may create horrible results
137 If correctable single-line errors exist, create
138 "<inputfile>.EXPERIMENTAL-checkpatch-fixes"
139 with potential errors corrected to the preferred
141 --fix-inplace EXPERIMENTAL - may create horrible results
142 Is the same as --fix, but overwrites the input
143 file. It's your fault if there's no backup or git
144 --ignore-perl-version override checking of perl version. expect
146 --codespell Use the codespell dictionary for spelling/typos
147 (default:$codespellfile)
148 --codespellfile Use this codespell dictionary
149 --typedefsfile Read additional types from this file
150 --color[=WHEN] Use colors 'always', 'never', or only when output
151 is a terminal ('auto'). Default is 'auto'.
152 --kconfig-prefix=WORD use WORD as a prefix for Kconfig symbols (default
154 -h, --help, --version display this help and exit
156 When FILE is - read standard input.
164 return grep { !$seen{$_}++ } @_;
174 open(my $script, '<', abs_path($P)) or
175 die "$P: Can't read '$P' $!\n";
177 my $text = <$script>;
181 # Also catch when type or level is passed through a variable
182 while ($text =~ /(?:(\bCHK|\bWARN|\bERROR|&\{\$msg_level})\s*\(|\$msg_type\s*=)\s*"([^"]+)"/g) {
184 if (exists($types{$2})) {
185 $types{$2} .= ",$1" if ($types{$2} ne $1);
190 $types{$2} = "UNDETERMINED";
194 print("#\tMessage type\n\n");
196 print(" ( Color coding: ");
197 print(RED . "ERROR" . RESET);
199 print(YELLOW . "WARNING" . RESET);
201 print(GREEN . "CHECK" . RESET);
203 print("Multiple levels / Undetermined");
207 foreach my $type (sort keys %types) {
208 my $orig_type = $type;
210 my $level = $types{$type};
211 if ($level eq "ERROR") {
212 $type = RED . $type . RESET;
213 } elsif ($level eq "WARN") {
214 $type = YELLOW . $type . RESET;
215 } elsif ($level eq "CHK") {
216 $type = GREEN . $type . RESET;
219 print(++$count . "\t" . $type . "\n");
220 if ($verbose && exists($verbose_messages{$orig_type})) {
221 my $message = $verbose_messages{$orig_type};
222 $message =~ s/\n/\n\t/g;
223 print("\t" . $message . "\n\n");
230 my $conf = which_conf($configuration_file);
233 open(my $conffile, '<', "$conf")
234 or warn "$P: Can't find a readable $configuration_file file $!\n";
236 while (<$conffile>) {
239 $line =~ s/\s*\n?$//g;
243 next if ($line =~ m/^\s*#/);
244 next if ($line =~ m/^\s*$/);
246 my @words = split(" ", $line);
247 foreach my $word (@words) {
248 last if ($word =~ m/^#/);
249 push (@conf_args, $word);
253 unshift(@ARGV, @conf_args) if @conf_args;
257 open(my $docs, '<', "$docsfile")
258 or warn "$P: Can't read the documentation file $docsfile $!\n";
269 if ($line =~ /^\s*\*\*(.+)\*\*$/) {
271 $verbose_messages{$type} = trim($desc);
277 if ($line =~ /^(?:\s{4,}|$)/) {
282 $verbose_messages{$type} = trim($desc);
291 $verbose_messages{$type} = trim($desc);
296 # Perl's Getopt::Long allows options to take optional arguments after a space.
297 # Prevent --color by itself from consuming other arguments
299 if ($_ eq "--color" || $_ eq "-color") {
300 $_ = "--color=$color";
305 'q|quiet+' => \$quiet,
306 'v|verbose!' => \$verbose,
308 'signoff!' => \$chk_signoff,
309 'patch!' => \$chk_patch,
312 'showfile!' => \$showfile,
315 'subjective!' => \$check,
316 'strict!' => \$check,
317 'ignore=s' => \@ignore,
319 'show-types!' => \$show_types,
320 'list-types!' => \$list_types,
321 'max-line-length=i' => \$max_line_length,
322 'min-conf-desc-length=i' => \$min_conf_desc_length,
323 'tab-size=i' => \$tabsize,
325 'summary!' => \$summary,
326 'mailback!' => \$mailback,
327 'summary-file!' => \$summary_file,
329 'fix-inplace!' => \$fix_inplace,
330 'ignore-perl-version!' => \$ignore_perl_version,
331 'debug=s' => \%debug,
332 'test-only=s' => \$tst_only,
333 'codespell!' => \$codespell,
334 'codespellfile=s' => \$user_codespellfile,
335 'typedefsfile=s' => \$typedefsfile,
336 'color=s' => \$color,
337 'no-color' => \$color, #keep old behaviors of -nocolor
338 'nocolor' => \$color, #keep old behaviors of -nocolor
339 'kconfig-prefix=s' => \${CONFIG_},
344 if ($user_codespellfile) {
345 # Use the user provided codespell file unconditionally
346 $codespellfile = $user_codespellfile;
347 } elsif (!(-f $codespellfile)) {
348 # If /usr/share/codespell/dictionary.txt is not present, try to find it
349 # under codespell's install directory: <codespell_root>/data/dictionary.txt
350 if (($codespell || $help) && which("python3") ne "") {
351 my $python_codespell_dict = << "EOF";
355 codespell_dir = op.dirname(codespell_lib.__file__)
356 codespell_file = op.join(codespell_dir, 'data', 'dictionary.txt')
357 print(codespell_file, end='')
360 my $codespell_dict = `python3 -c "$python_codespell_dict" 2> /dev/null`;
361 $codespellfile = $codespell_dict if (-f $codespell_dict);
365 # $help is 1 if either -h, --help or --version is passed as option - exitcode: 0
366 # $help is 2 if invalid option is passed - exitcode: 1
367 help($help - 1) if ($help);
369 die "$P: --git cannot be used with --file or --fix\n" if ($git && ($file || $fix));
370 die "$P: --verbose cannot be used with --terse\n" if ($verbose && $terse);
372 if ($color =~ /^[01]$/) {
374 } elsif ($color =~ /^always$/i) {
376 } elsif ($color =~ /^never$/i) {
378 } elsif ($color =~ /^auto$/i) {
379 $color = (-t STDOUT);
381 die "$P: Invalid color mode: $color\n";
384 load_docs() if ($verbose);
385 list_types(0) if ($list_types);
387 $fix = 1 if ($fix_inplace);
388 $check_orig = $check;
392 my $perl_version_ok = 1;
393 if ($^V && $^V lt $minimum_perl_version) {
394 $perl_version_ok = 0;
395 printf "$P: requires at least perl version %vd\n", $minimum_perl_version;
396 exit(1) if (!$ignore_perl_version);
399 #if no filenames are given, push '-' to read patch from stdin
404 # skip TAB size 1 to avoid additional checks on $tabsize - 1
405 die "$P: Invalid TAB size: $tabsize\n" if ($tabsize < 2);
407 sub hash_save_array_words {
408 my ($hashRef, $arrayRef) = @_;
410 my @array = split(/,/, join(',', @$arrayRef));
411 foreach my $word (@array) {
412 $word =~ s/\s*\n?$//g;
415 $word =~ tr/[a-z]/[A-Z]/;
417 next if ($word =~ m/^\s*#/);
418 next if ($word =~ m/^\s*$/);
424 sub hash_show_words {
425 my ($hashRef, $prefix) = @_;
427 if (keys %$hashRef) {
428 print "\nNOTE: $prefix message types:";
429 foreach my $word (sort keys %$hashRef) {
436 hash_save_array_words(\%ignore_type, \@ignore);
437 hash_save_array_words(\%use_type, \@use);
440 my $dbg_possible = 0;
443 for my $key (keys %debug) {
445 eval "\${dbg_$key} = '$debug{$key}';";
449 my $rpt_cleaners = 0;
458 if (!top_of_kernel_tree($root)) {
459 die "$P: $root: --root does not point at a valid tree\n";
462 if (top_of_kernel_tree('.')) {
464 # OpenOCD specific: Begin: replace s"/scripts/"/tools/scripts/"
465 } elsif ($0 =~ m@(.*)/tools/scripts/[^/]*$@ &&
466 top_of_kernel_tree($1)) {
469 # OpenOCD specific: End
472 if (!defined $root) {
473 print "Must be run from the top-level dir. of an OpenOCD tree\n";
478 my $emitted_corrupt = 0;
481 [A-Za-z_][A-Za-z\d_]*
482 (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
484 our $Storage = qr{extern|static|asmlinkage};
498 our $InitAttributePrefix = qr{__(?:mem|cpu|dev|net_|)};
499 our $InitAttributeData = qr{$InitAttributePrefix(?:initdata\b)};
500 our $InitAttributeConst = qr{$InitAttributePrefix(?:initconst\b)};
501 our $InitAttributeInit = qr{$InitAttributePrefix(?:init\b)};
502 our $InitAttribute = qr{$InitAttributeData|$InitAttributeConst|$InitAttributeInit};
504 # Notes to $Attribute:
505 # We need \b after 'init' otherwise 'initconst' will cause a false positive in a check
528 ____cacheline_aligned|
529 ____cacheline_aligned_in_smp|
530 ____cacheline_internodealigned_in_smp|
532 __alloc_size\s*\(\s*\d+\s*(?:,\s*\d+\s*)?\)
535 our $Inline = qr{inline|__always_inline|noinline|__inline|__inline__};
536 our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
537 our $Lval = qr{$Ident(?:$Member)*};
539 our $Int_type = qr{(?i)llu|ull|ll|lu|ul|l|u};
540 our $Binary = qr{(?i)0b[01]+$Int_type?};
541 our $Hex = qr{(?i)0x[0-9a-f]+$Int_type?};
542 our $Int = qr{[0-9]+$Int_type?};
543 our $Octal = qr{0[0-7]+$Int_type?};
544 our $String = qr{(?:\b[Lu])?"[X\t]*"};
545 our $Float_hex = qr{(?i)0x[0-9a-f]+p-?[0-9]+[fl]?};
546 our $Float_dec = qr{(?i)(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:e-?[0-9]+)?[fl]?};
547 our $Float_int = qr{(?i)[0-9]+e-?[0-9]+[fl]?};
548 our $Float = qr{$Float_hex|$Float_dec|$Float_int};
549 our $Constant = qr{$Float|$Binary|$Octal|$Hex|$Int};
550 our $Assignment = qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
551 our $Compare = qr{<=|>=|==|!=|<|(?<!-)>};
552 our $Arithmetic = qr{\+|-|\*|\/|%};
556 &&|\|\||,|\^|\+\+|--|&|\||$Arithmetic
559 our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x;
563 our $NonptrTypeMisordered;
564 our $NonptrTypeWithAttr;
568 our $DeclareMisordered;
570 our $NON_ASCII_UTF8 = qr{
571 [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
572 | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
573 | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
574 | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
575 | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
576 | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
577 | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
581 [\x09\x0A\x0D\x20-\x7E] # ASCII
585 our $typeC99Typedefs = qr{(?:__)?(?:[us]_?)?int_?(?:8|16|32|64)_t};
586 our $typeOtherOSTypedefs = qr{(?x:
587 u_(?:char|short|int|long) | # bsd
588 u(?:nchar|short|int|long) # sysv
590 our $typeKernelTypedefs = qr{(?x:
591 (?:__)?(?:u|s|be|le)(?:8|16|32|64)|
594 our $typeTypedefs = qr{(?x:
596 $typeOtherOSTypedefs\b|
597 $typeKernelTypedefs\b
600 our $zero_initializer = qr{(?:(?:0[xX])?0+$Int_type?|NULL|false)\b};
603 our $logFunctions = qr{(?x:
604 printk(?:_ratelimited|_once|_deferred_once|_deferred|)|
605 (?:[a-z0-9]+_){1,2}(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)|
607 WARN(?:_RATELIMIT|_ONCE|)|
610 seq_vprintf|seq_printf|seq_puts
613 # OpenOCD specific: Begin: list log functions
614 our $logFunctions = qr{(?x:
615 LOG_(?:TARGET_|)(?:DEBUG_IO|DEBUG|INFO|WARNING|ERROR|USER|USER_N|OUTPUT)
617 # OpenOCD specific: End
619 our $allocFunctions = qr{(?x:
621 (?:kv|k|v)[czm]alloc(?:_array)?(?:_node)? |
624 (?:\w+)?alloc_skb(?:_ip_align)? |
625 # dev_alloc_skb/netdev_alloc_skb, et al
629 our $signature_tags = qr{(?xi:
641 our $tracing_logging_tags = qr{(?xi:
665 sub edit_distance_min {
667 my $len = scalar @arr;
668 if ((scalar @arr) < 1) {
669 # if underflow, return
673 for my $i (0 .. ($len-1)) {
674 if ($arr[$i] < $min) {
681 sub get_edit_distance {
682 my ($str1, $str2) = @_;
687 my $len1 = length($str1);
688 my $len2 = length($str2);
689 # two dimensional array storing minimum edit distance
691 for my $i (0 .. $len1) {
692 for my $j (0 .. $len2) {
694 $distance[$i][$j] = $j;
696 $distance[$i][$j] = $i;
697 } elsif (substr($str1, $i-1, 1) eq substr($str2, $j-1, 1)) {
698 $distance[$i][$j] = $distance[$i - 1][$j - 1];
700 my $dist1 = $distance[$i][$j - 1]; #insert distance
701 my $dist2 = $distance[$i - 1][$j]; # remove
702 my $dist3 = $distance[$i - 1][$j - 1]; #replace
703 $distance[$i][$j] = 1 + edit_distance_min($dist1, $dist2, $dist3);
707 return $distance[$len1][$len2];
710 sub find_standard_signature {
712 my @standard_signature_tags = (
713 'Signed-off-by:', 'Co-developed-by:', 'Acked-by:', 'Tested-by:',
714 'Reviewed-by:', 'Reported-by:', 'Suggested-by:'
716 foreach my $signature (@standard_signature_tags) {
717 return $signature if (get_edit_distance($sign_off, $signature) <= 2);
723 our @typeListMisordered = (
724 qr{char\s+(?:un)?signed},
725 qr{int\s+(?:(?:un)?signed\s+)?short\s},
726 qr{int\s+short(?:\s+(?:un)?signed)},
727 qr{short\s+int(?:\s+(?:un)?signed)},
728 qr{(?:un)?signed\s+int\s+short},
729 qr{short\s+(?:un)?signed},
730 qr{long\s+int\s+(?:un)?signed},
731 qr{int\s+long\s+(?:un)?signed},
732 qr{long\s+(?:un)?signed\s+int},
733 qr{int\s+(?:un)?signed\s+long},
734 qr{int\s+(?:un)?signed},
735 qr{int\s+long\s+long\s+(?:un)?signed},
736 qr{long\s+long\s+int\s+(?:un)?signed},
737 qr{long\s+long\s+(?:un)?signed\s+int},
738 qr{long\s+long\s+(?:un)?signed},
739 qr{long\s+(?:un)?signed},
744 qr{(?:(?:un)?signed\s+)?char},
745 qr{(?:(?:un)?signed\s+)?short\s+int},
746 qr{(?:(?:un)?signed\s+)?short},
747 qr{(?:(?:un)?signed\s+)?int},
748 qr{(?:(?:un)?signed\s+)?long\s+int},
749 qr{(?:(?:un)?signed\s+)?long\s+long\s+int},
750 qr{(?:(?:un)?signed\s+)?long\s+long},
751 qr{(?:(?:un)?signed\s+)?long},
760 qr{${Ident}_handler},
761 qr{${Ident}_handler_fn},
765 our $C90_int_types = qr{(?x:
766 long\s+long\s+int\s+(?:un)?signed|
767 long\s+long\s+(?:un)?signed\s+int|
768 long\s+long\s+(?:un)?signed|
769 (?:(?:un)?signed\s+)?long\s+long\s+int|
770 (?:(?:un)?signed\s+)?long\s+long|
771 int\s+long\s+long\s+(?:un)?signed|
772 int\s+(?:(?:un)?signed\s+)?long\s+long|
774 long\s+int\s+(?:un)?signed|
775 long\s+(?:un)?signed\s+int|
776 long\s+(?:un)?signed|
777 (?:(?:un)?signed\s+)?long\s+int|
778 (?:(?:un)?signed\s+)?long|
779 int\s+long\s+(?:un)?signed|
780 int\s+(?:(?:un)?signed\s+)?long|
783 (?:(?:un)?signed\s+)?int
786 our @typeListFile = ();
787 our @typeListWithAttr = (
789 qr{struct\s+$InitAttribute\s+$Ident},
790 qr{union\s+$InitAttribute\s+$Ident},
793 our @modifierList = (
796 our @modifierListFile = ();
798 our @mode_permission_funcs = (
800 ["module_param_(?:array|named|string)", 4],
801 ["module_param_array_named", 5],
802 ["debugfs_create_(?:file|u8|u16|u32|u64|x8|x16|x32|x64|size_t|atomic_t|bool|blob|regset32|u32_array)", 2],
803 ["proc_create(?:_data|)", 2],
804 ["(?:CLASS|DEVICE|SENSOR|SENSOR_DEVICE|IIO_DEVICE)_ATTR", 2],
805 ["IIO_DEV_ATTR_[A-Z_]+", 1],
806 ["SENSOR_(?:DEVICE_|)ATTR_2", 2],
807 ["SENSOR_TEMPLATE(?:_2|)", 3],
811 my $word_pattern = '\b[A-Z]?[a-z]{2,}\b';
813 #Create a search pattern for all these functions to speed up a loop below
814 our $mode_perms_search = "";
815 foreach my $entry (@mode_permission_funcs) {
816 $mode_perms_search .= '|' if ($mode_perms_search ne "");
817 $mode_perms_search .= $entry->[0];
819 $mode_perms_search = "(?:${mode_perms_search})";
821 our %deprecated_apis = (
822 "synchronize_rcu_bh" => "synchronize_rcu",
823 "synchronize_rcu_bh_expedited" => "synchronize_rcu_expedited",
824 "call_rcu_bh" => "call_rcu",
825 "rcu_barrier_bh" => "rcu_barrier",
826 "synchronize_sched" => "synchronize_rcu",
827 "synchronize_sched_expedited" => "synchronize_rcu_expedited",
828 "call_rcu_sched" => "call_rcu",
829 "rcu_barrier_sched" => "rcu_barrier",
830 "get_state_synchronize_sched" => "get_state_synchronize_rcu",
831 "cond_synchronize_sched" => "cond_synchronize_rcu",
834 #Create a search pattern for all these strings to speed up a loop below
835 our $deprecated_apis_search = "";
836 foreach my $entry (keys %deprecated_apis) {
837 $deprecated_apis_search .= '|' if ($deprecated_apis_search ne "");
838 $deprecated_apis_search .= $entry;
840 $deprecated_apis_search = "(?:${deprecated_apis_search})";
842 our $mode_perms_world_writable = qr{
850 our %mode_permission_string_types = (
869 #Create a search pattern for all these strings to speed up a loop below
870 our $mode_perms_string_search = "";
871 foreach my $entry (keys %mode_permission_string_types) {
872 $mode_perms_string_search .= '|' if ($mode_perms_string_search ne "");
873 $mode_perms_string_search .= $entry;
875 our $single_mode_perms_string_search = "(?:${mode_perms_string_search})";
876 our $multi_mode_perms_string_search = qr{
877 ${single_mode_perms_string_search}
878 (?:\s*\|\s*${single_mode_perms_string_search})*
884 return trim($string) if ($string =~ /^\s*0[0-7]{3,3}\s*$/);
891 while ($string =~ /\b(($single_mode_perms_string_search)\b(?:\s*\|\s*)?\s*)/g) {
892 $curpos = pos($string);
895 last if ($lastpos > 0 && ($curpos - length($omatch) != $lastpos));
897 $to |= $mode_permission_string_types{$match};
898 $val .= '\s*\|\s*' if ($val ne "");
902 $oval =~ s/^\s*\|\s*//;
903 $oval =~ s/\s*\|\s*$//;
904 return sprintf("%04o", $to);
907 our $allowed_asm_includes = qr{(?x:
913 # memory.h: ARM has a custom one
915 # Load common spelling mistakes and build regular expression list.
919 if (open(my $spelling, '<', $spelling_file)) {
920 while (<$spelling>) {
923 $line =~ s/\s*\n?$//g;
926 next if ($line =~ m/^\s*#/);
927 next if ($line =~ m/^\s*$/);
929 my ($suspect, $fix) = split(/\|\|/, $line);
931 $spelling_fix{$suspect} = $fix;
935 warn "No typos will be found - file '$spelling_file': $!\n";
939 if (open(my $spelling, '<', $codespellfile)) {
940 while (<$spelling>) {
943 $line =~ s/\s*\n?$//g;
946 next if ($line =~ m/^\s*#/);
947 next if ($line =~ m/^\s*$/);
948 next if ($line =~ m/, disabled/i);
952 my ($suspect, $fix) = split(/->/, $line);
954 $spelling_fix{$suspect} = $fix;
958 warn "No codespell typos will be found - file '$codespellfile': $!\n";
962 $misspellings = join("|", sort keys %spelling_fix) if keys %spelling_fix;
965 my ($wordsRef, $file) = @_;
967 if (open(my $words, '<', $file)) {
971 $line =~ s/\s*\n?$//g;
974 next if ($line =~ m/^\s*#/);
975 next if ($line =~ m/^\s*$/);
977 print("$file: '$line' invalid - ignored\n");
981 $$wordsRef .= '|' if (defined $$wordsRef);
991 # OpenOCD specific: Begin: Load list of allowed CamelCase symbols
992 if (show_type("CAMELCASE")) {
993 my $allowed_camelcase_file = "$root/tools/scripts/camelcase.txt";
994 if (open(my $words, '<', $allowed_camelcase_file)) {
998 $line =~ s/\s*\n?$//g;
1001 next if ($line =~ m/^\s*#/);
1002 next if ($line =~ m/^\s*$/);
1003 if ($line =~ /\s/) {
1004 print("$allowed_camelcase_file: '$line' invalid - ignored\n");
1008 $camelcase{$line} = 1;
1010 close($allowed_camelcase_file);
1012 warn "No camelcase symbols to ignore - file '$allowed_camelcase_file': $!\n";
1015 # OpenOCD specific: End
1018 if (show_type("CONST_STRUCT")) {
1019 read_words(\$const_structs, $conststructsfile)
1020 or warn "No structs that should be const will be found - file '$conststructsfile': $!\n";
1023 if (defined($typedefsfile)) {
1024 my $typeOtherTypedefs;
1025 read_words(\$typeOtherTypedefs, $typedefsfile)
1026 or warn "No additional types will be considered - file '$typedefsfile': $!\n";
1027 $typeTypedefs .= '|' . $typeOtherTypedefs if (defined $typeOtherTypedefs);
1031 my $mods = "(?x: \n" . join("|\n ", (@modifierList, @modifierListFile)) . "\n)";
1032 my $all = "(?x: \n" . join("|\n ", (@typeList, @typeListFile)) . "\n)";
1033 my $Misordered = "(?x: \n" . join("|\n ", @typeListMisordered) . "\n)";
1034 my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)";
1035 $Modifier = qr{(?:$Attribute|$Sparse|$mods)};
1037 (?:$typeTypedefs\b)|
1041 (?:$Modifier\s+|const\s+)*
1043 (?:typeof|__typeof__)\s*\([^\)]*\)|
1044 (?:$typeTypedefs\b)|
1047 (?:\s+$Modifier|\s+const)*
1049 $NonptrTypeMisordered = qr{
1050 (?:$Modifier\s+|const\s+)*
1054 (?:\s+$Modifier|\s+const)*
1056 $NonptrTypeWithAttr = qr{
1057 (?:$Modifier\s+|const\s+)*
1059 (?:typeof|__typeof__)\s*\([^\)]*\)|
1060 (?:$typeTypedefs\b)|
1061 (?:${allWithAttr}\b)
1063 (?:\s+$Modifier|\s+const)*
1067 (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
1068 (?:\s+$Inline|\s+$Modifier)*
1070 $TypeMisordered = qr{
1071 $NonptrTypeMisordered
1072 (?:(?:\s|\*|\[\])+\s*const|(?:\s|\*\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
1073 (?:\s+$Inline|\s+$Modifier)*
1075 $Declare = qr{(?:$Storage\s+(?:$Inline\s+)?)?$Type};
1076 $DeclareMisordered = qr{(?:$Storage\s+(?:$Inline\s+)?)?$TypeMisordered};
1080 our $Typecast = qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
1082 # Using $balanced_parens, $LvalOrFunc, or $FuncArg
1083 # requires at least perl version v5.10.0
1084 # Any use must be runtime checked with $^V
1086 our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
1087 our $LvalOrFunc = qr{((?:[\&\*]\s*)?$Lval)\s*($balanced_parens{0,1})\s*};
1088 our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant|$String)};
1090 our $declaration_macros = qr{(?x:
1091 (?:$Storage\s+)?(?:[A-Z_][A-Z0-9]*_){0,2}(?:DEFINE|DECLARE)(?:_[A-Z0-9]+){1,6}\s*\(|
1092 (?:$Storage\s+)?[HLP]?LIST_HEAD\s*\(|
1093 (?:SKCIPHER_REQUEST|SHASH_DESC|AHASH_REQUEST)_ON_STACK\s*\(|
1094 (?:$Storage\s+)?(?:XA_STATE|XA_STATE_ORDER)\s*\(
1097 our %allow_repeated_words = (
1104 sub deparenthesize {
1106 return "" if (!defined($string));
1108 while ($string =~ /^\s*\(.*\)\s*$/) {
1109 $string =~ s@^\s*\(\s*@@;
1110 $string =~ s@\s*\)\s*$@@;
1113 $string =~ s@\s+@ @g;
1118 sub seed_camelcase_file {
1121 return if (!(-f $file));
1125 open(my $include_file, '<', "$file")
1126 or warn "$P: Can't read '$file' $!\n";
1127 my $text = <$include_file>;
1128 close($include_file);
1130 my @lines = split('\n', $text);
1132 foreach my $line (@lines) {
1133 next if ($line !~ /(?:[A-Z][a-z]|[a-z][A-Z])/);
1134 if ($line =~ /^[ \t]*(?:#[ \t]*define|typedef\s+$Type)\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)/) {
1136 } elsif ($line =~ /^\s*$Declare\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*[\(\[,;]/) {
1138 } elsif ($line =~ /^\s*(?:union|struct|enum)\s+(\w*(?:[A-Z][a-z]|[a-z][A-Z])\w*)\s*[;\{]/) {
1144 our %maintained_status = ();
1146 sub is_maintained_obsolete {
1147 my ($filename) = @_;
1149 return 0 if (!$tree || !(-e "$root/scripts/get_maintainer.pl"));
1151 if (!exists($maintained_status{$filename})) {
1152 $maintained_status{$filename} = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`;
1155 return $maintained_status{$filename} =~ /obsolete/i;
1158 sub is_SPDX_License_valid {
1161 # OpenOCD specific: Begin: replace s"scripts"tools/scripts"
1162 return 1 if (!$tree || which("python3") eq "" || !(-x "$root/tools/scripts/spdxcheck.py") || !(-e "$gitroot"));
1164 my $root_path = abs_path($root);
1165 my $status = `cd "$root_path"; echo "$license" | tools/scripts/spdxcheck.py -`;
1166 # OpenOCD specific: End
1167 return 0 if ($status ne "");
1171 my $camelcase_seeded = 0;
1172 sub seed_camelcase_includes {
1173 return if ($camelcase_seeded);
1176 my $camelcase_cache = "";
1177 my @include_files = ();
1179 $camelcase_seeded = 1;
1181 if (-e "$gitroot") {
1182 my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
1183 chomp $git_last_include_commit;
1184 $camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
1186 my $last_mod_date = 0;
1187 $files = `find $root/include -name "*.h"`;
1188 @include_files = split('\n', $files);
1189 foreach my $file (@include_files) {
1190 my $date = POSIX::strftime("%Y%m%d%H%M",
1191 localtime((stat $file)[9]));
1192 $last_mod_date = $date if ($last_mod_date < $date);
1194 $camelcase_cache = ".checkpatch-camelcase.date.$last_mod_date";
1197 if ($camelcase_cache ne "" && -f $camelcase_cache) {
1198 open(my $camelcase_file, '<', "$camelcase_cache")
1199 or warn "$P: Can't read '$camelcase_cache' $!\n";
1200 while (<$camelcase_file>) {
1204 close($camelcase_file);
1209 if (-e "$gitroot") {
1210 $files = `${git_command} ls-files "include/*.h"`;
1211 @include_files = split('\n', $files);
1214 foreach my $file (@include_files) {
1215 seed_camelcase_file($file);
1218 if ($camelcase_cache ne "") {
1219 unlink glob ".checkpatch-camelcase.*";
1220 open(my $camelcase_file, '>', "$camelcase_cache")
1221 or warn "$P: Can't write '$camelcase_cache' $!\n";
1222 foreach (sort { lc($a) cmp lc($b) } keys(%camelcase)) {
1223 print $camelcase_file ("$_\n");
1225 close($camelcase_file);
1229 sub git_is_single_file {
1230 my ($filename) = @_;
1232 return 0 if ((which("git") eq "") || !(-e "$gitroot"));
1234 my $output = `${git_command} ls-files -- $filename 2>/dev/null`;
1235 my $count = $output =~ tr/\n//;
1236 return $count eq 1 && $output =~ m{^${filename}$};
1239 sub git_commit_info {
1240 my ($commit, $id, $desc) = @_;
1242 return ($id, $desc) if ((which("git") eq "") || !(-e "$gitroot"));
1244 my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
1245 $output =~ s/^\s*//gm;
1246 my @lines = split("\n", $output);
1248 return ($id, $desc) if ($#lines < 0);
1250 if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous/) {
1251 # Maybe one day convert this block of bash into something that returns
1252 # all matching commit ids, but it's very slow...
1254 # echo "checking commits $1..."
1255 # git rev-list --remotes | grep -i "^$1" |
1256 # while read line ; do
1257 # git log --format='%H %s' -1 $line |
1258 # echo "commit $(cut -c 1-12,41-)"
1260 } elsif ($lines[0] =~ /^fatal: ambiguous argument '$commit': unknown revision or path not in the working tree\./ ||
1261 $lines[0] =~ /^fatal: bad object $commit/) {
1264 $id = substr($lines[0], 0, 12);
1265 $desc = substr($lines[0], 41);
1268 return ($id, $desc);
1271 $chk_signoff = 0 if ($file);
1276 my @fixed_inserted = ();
1277 my @fixed_deleted = ();
1280 # If input is git commits, extract all commits from the commit expressions.
1281 # For example, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2'.
1282 die "$P: No git repository found\n" if ($git && !-e "$gitroot");
1286 foreach my $commit_expr (@ARGV) {
1288 if ($commit_expr =~ m/^(.*)-(\d+)$/) {
1289 $git_range = "-$2 $1";
1290 } elsif ($commit_expr =~ m/\.\./) {
1291 $git_range = "$commit_expr";
1293 $git_range = "-1 $commit_expr";
1295 my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
1296 foreach my $line (split(/\n/, $lines)) {
1297 $line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
1298 next if (!defined($1) || !defined($2));
1301 unshift(@commits, $sha1);
1302 $git_commits{$sha1} = $subject;
1305 die "$P: no git commits after extraction!\n" if (@commits == 0);
1310 $allow_c99_comments = !defined $ignore_type{"C99_COMMENT_TOLERANCE"};
1311 for my $filename (@ARGV) {
1313 my $is_git_file = git_is_single_file($filename);
1314 my $oldfile = $file;
1315 $file = 1 if ($is_git_file);
1317 open($FILE, '-|', "git format-patch -M --stdout -1 $filename") ||
1318 die "$P: $filename: git format-patch failed - $!\n";
1320 open($FILE, '-|', "diff -u /dev/null $filename") ||
1321 die "$P: $filename: diff failed - $!\n";
1322 } elsif ($filename eq '-') {
1323 open($FILE, '<&STDIN');
1325 open($FILE, '<', "$filename") ||
1326 die "$P: $filename: open failed - $!\n";
1328 if ($filename eq '-') {
1329 $vname = 'Your patch';
1331 $vname = "Commit " . substr($filename, 0, 12) . ' ("' . $git_commits{$filename} . '")';
1337 push(@rawlines, $_);
1338 $vname = qq("$1") if ($filename eq '-' && $_ =~ m/^Subject:\s+(.+)/i);
1342 if ($#ARGV > 0 && $quiet == 0) {
1343 print '-' x length($vname) . "\n";
1345 print '-' x length($vname) . "\n";
1348 if (!process($filename)) {
1354 @fixed_inserted = ();
1355 @fixed_deleted = ();
1357 @modifierListFile = ();
1360 $file = $oldfile if ($is_git_file);
1364 hash_show_words(\%use_type, "Used");
1365 hash_show_words(\%ignore_type, "Ignored");
1367 if (!$perl_version_ok) {
1370 NOTE: perl $^V is not modern enough to detect all possible issues.
1371 An upgrade to at least perl $minimum_perl_version is suggested.
1378 NOTE: If any of the errors are false positives, please report
1379 them to the maintainer, see CHECKPATCH in MAINTAINERS.
1382 # OpenOCD specific: Begin
1385 NOTE: If any of the errors are false positives, please report
1386 them to the openocd-devel mailing list or prepare a patch
1387 and send it to Gerrit for review.
1389 # OpenOCD specific: End
1395 sub top_of_kernel_tree {
1400 "COPYING", "CREDITS", "Kbuild", "MAINTAINERS", "Makefile",
1401 "README", "Documentation", "arch", "include", "drivers",
1402 "fs", "init", "ipc", "kernel", "lib", "scripts",
1405 # OpenOCD specific: Begin
1407 "AUTHORS", "BUGS", "COPYING", "HACKING", "Makefile.am",
1408 "README", "contrib", "doc", "src", "tcl", "testing", "tools",
1410 # OpenOCD specific: End
1412 foreach my $check (@tree_check) {
1413 if (! -e $root . '/' . $check) {
1421 my ($formatted_email) = @_;
1425 my $name_comment = "";
1429 if ($formatted_email =~ /^(.*)<(\S+\@\S+)>(.*)$/) {
1432 $comment = $3 if defined $3;
1433 } elsif ($formatted_email =~ /^\s*<(\S+\@\S+)>(.*)$/) {
1435 $comment = $2 if defined $2;
1436 } elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
1438 $comment = $2 if defined $2;
1439 $formatted_email =~ s/\Q$address\E.*$//;
1440 $name = $formatted_email;
1441 $name = trim($name);
1442 $name =~ s/^\"|\"$//g;
1443 # If there's a name left after stripping spaces and
1444 # leading quotes, and the address doesn't have both
1445 # leading and trailing angle brackets, the address
1447 # "joe smith joe@smith.com" bad
1448 # "joe smith <joe@smith.com" bad
1449 if ($name ne "" && $address !~ /^<[^>]+>$/) {
1454 # OpenOCD specific: Begin: handle jenkins as valid email
1455 } elsif ($formatted_email eq "jenkins") {
1456 $address = "jenkins";
1457 # OpenOCD specific: End
1460 # Extract comments from names excluding quoted parts
1461 # "John D. (Doe)" - Do not extract
1462 if ($name =~ s/\"(.+)\"//) {
1465 while ($name =~ s/\s*($balanced_parens)\s*/ /) {
1466 $name_comment .= trim($1);
1468 $name =~ s/^[ \"]+|[ \"]+$//g;
1469 $name = trim("$quoted $name");
1471 $address = trim($address);
1472 $address =~ s/^\<|\>$//g;
1473 $comment = trim($comment);
1475 if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
1476 $name =~ s/(?<!\\)"/\\"/g; ##escape quotes
1477 $name = "\"$name\"";
1480 return ($name, $name_comment, $address, $comment);
1484 my ($name, $name_comment, $address, $comment) = @_;
1486 my $formatted_email;
1488 $name =~ s/^[ \"]+|[ \"]+$//g;
1489 $address = trim($address);
1490 $address =~ s/(?:\.|\,|\")+$//; ##trailing commas, dots or quotes
1492 if ($name =~ /[^\w \-]/i) { ##has "must quote" chars
1493 $name =~ s/(?<!\\)"/\\"/g; ##escape quotes
1494 $name = "\"$name\"";
1497 $name_comment = trim($name_comment);
1498 $name_comment = " $name_comment" if ($name_comment ne "");
1499 $comment = trim($comment);
1500 $comment = " $comment" if ($comment ne "");
1502 if ("$name" eq "") {
1503 $formatted_email = "$address";
1505 $formatted_email = "$name$name_comment <$address>";
1507 $formatted_email .= "$comment";
1508 return $formatted_email;
1511 sub reformat_email {
1514 my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
1515 return format_email($email_name, $name_comment, $email_address, $comment);
1518 sub same_email_addresses {
1519 my ($email1, $email2) = @_;
1521 my ($email1_name, $name1_comment, $email1_address, $comment1) = parse_email($email1);
1522 my ($email2_name, $name2_comment, $email2_address, $comment2) = parse_email($email2);
1524 return $email1_name eq $email2_name &&
1525 $email1_address eq $email2_address &&
1526 $name1_comment eq $name2_comment &&
1527 $comment1 eq $comment2;
1533 foreach my $path (split(/:/, $ENV{PATH})) {
1534 if (-e "$path/$bin") {
1535 return "$path/$bin";
1545 foreach my $path (split(/:/, ".:$ENV{HOME}:.scripts")) {
1546 if (-e "$path/$conf") {
1547 return "$path/$conf";
1559 for my $c (split(//, $str)) {
1563 for (; ($n % $tabsize) != 0; $n++) {
1575 (my $res = shift) =~ tr/\t/ /c;
1582 # Drop the diff line leader and expand tabs
1584 $line = expand_tabs($line);
1586 # Pick the indent from the front of the line.
1587 my ($white) = ($line =~ /^(\s*)/);
1589 return (length($line), length($white));
1592 my $sanitise_quote = '';
1594 sub sanitise_line_reset {
1595 my ($in_comment) = @_;
1598 $sanitise_quote = '*/';
1600 $sanitise_quote = '';
1613 # Always copy over the diff marker.
1614 $res = substr($line, 0, 1);
1616 for ($off = 1; $off < length($line); $off++) {
1617 $c = substr($line, $off, 1);
1619 # Comments we are whacking completely including the begin
1620 # and end, all to $;.
1621 if ($sanitise_quote eq '' && substr($line, $off, 2) eq '/*') {
1622 $sanitise_quote = '*/';
1624 substr($res, $off, 2, "$;$;");
1628 if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') {
1629 $sanitise_quote = '';
1630 substr($res, $off, 2, "$;$;");
1634 if ($sanitise_quote eq '' && substr($line, $off, 2) eq '//') {
1635 $sanitise_quote = '//';
1637 substr($res, $off, 2, $sanitise_quote);
1642 # A \ in a string means ignore the next character.
1643 if (($sanitise_quote eq "'" || $sanitise_quote eq '"') &&
1645 substr($res, $off, 2, 'XX');
1650 if ($c eq "'" || $c eq '"') {
1651 if ($sanitise_quote eq '') {
1652 $sanitise_quote = $c;
1654 substr($res, $off, 1, $c);
1656 } elsif ($sanitise_quote eq $c) {
1657 $sanitise_quote = '';
1661 #print "c<$c> SQ<$sanitise_quote>\n";
1662 if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") {
1663 substr($res, $off, 1, $;);
1664 } elsif ($off != 0 && $sanitise_quote eq '//' && $c ne "\t") {
1665 substr($res, $off, 1, $;);
1666 } elsif ($off != 0 && $sanitise_quote && $c ne "\t") {
1667 substr($res, $off, 1, 'X');
1669 substr($res, $off, 1, $c);
1673 if ($sanitise_quote eq '//') {
1674 $sanitise_quote = '';
1677 # The pathname on a #include may be surrounded by '<' and '>'.
1678 if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) {
1679 my $clean = 'X' x length($1);
1680 $res =~ s@\<.*\>@<$clean>@;
1682 # The whole of a #error is a string.
1683 } elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) {
1684 my $clean = 'X' x length($1);
1685 $res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
1688 if ($allow_c99_comments && $res =~ m@(//.*$)@) {
1690 $res =~ s/\Q$match\E/"$;" x length($match)/e;
1696 sub get_quoted_string {
1697 my ($line, $rawline) = @_;
1699 return "" if (!defined($line) || !defined($rawline));
1700 return "" if ($line !~ m/($String)/g);
1701 return substr($rawline, $-[0], $+[0] - $-[0]);
1704 sub ctx_statement_block {
1705 my ($linenr, $remain, $off) = @_;
1706 my $line = $linenr - 1;
1709 my $coff = $off - 1;
1723 @stack = (['', 0]) if ($#stack == -1);
1725 #warn "CSB: blk<$blk> remain<$remain>\n";
1726 # If we are about to drop off the end, pull in more
1729 for (; $remain > 0; $line++) {
1730 last if (!defined $lines[$line]);
1731 next if ($lines[$line] =~ /^-/);
1734 $blk .= $lines[$line] . "\n";
1735 $len = length($blk);
1739 # Bail if there is no further context.
1740 #warn "CSB: blk<$blk> off<$off> len<$len>\n";
1744 if ($level == 0 && substr($blk, $off) =~ /^.\s*#\s*define/) {
1750 $c = substr($blk, $off, 1);
1751 $remainder = substr($blk, $off);
1753 #warn "CSB: c<$c> type<$type> level<$level> remainder<$remainder> coff_set<$coff_set>\n";
1755 # Handle nested #if/#else.
1756 if ($remainder =~ /^#\s*(?:ifndef|ifdef|if)\s/) {
1757 push(@stack, [ $type, $level ]);
1758 } elsif ($remainder =~ /^#\s*(?:else|elif)\b/) {
1759 ($type, $level) = @{$stack[$#stack - 1]};
1760 } elsif ($remainder =~ /^#\s*endif\b/) {
1761 ($type, $level) = @{pop(@stack)};
1764 # Statement ends at the ';' or a close '}' at the
1766 if ($level == 0 && $c eq ';') {
1770 # An else is really a conditional as long as its not else if
1771 if ($level == 0 && $coff_set == 0 &&
1772 (!defined($p) || $p =~ /(?:\s|\}|\+)/) &&
1773 $remainder =~ /^(else)(?:\s|{)/ &&
1774 $remainder !~ /^else\s+if\b/) {
1775 $coff = $off + length($1) - 1;
1777 #warn "CSB: mark coff<$coff> soff<$soff> 1<$1>\n";
1778 #warn "[" . substr($blk, $soff, $coff - $soff + 1) . "]\n";
1781 if (($type eq '' || $type eq '(') && $c eq '(') {
1785 if ($type eq '(' && $c eq ')') {
1787 $type = ($level != 0)? '(' : '';
1789 if ($level == 0 && $coff < $soff) {
1792 #warn "CSB: mark coff<$coff>\n";
1795 if (($type eq '' || $type eq '{') && $c eq '{') {
1799 if ($type eq '{' && $c eq '}') {
1801 $type = ($level != 0)? '{' : '';
1804 if (substr($blk, $off + 1, 1) eq ';') {
1810 # Preprocessor commands end at the newline unless escaped.
1811 if ($type eq '#' && $c eq "\n" && $p ne "\\") {
1819 # We are truly at the end, so shuffle to the next line.
1826 my $statement = substr($blk, $soff, $off - $soff + 1);
1827 my $condition = substr($blk, $soff, $coff - $soff + 1);
1829 #warn "STATEMENT<$statement>\n";
1830 #warn "CONDITION<$condition>\n";
1832 #print "coff<$coff> soff<$off> loff<$loff>\n";
1834 return ($statement, $condition,
1835 $line, $remain + 1, $off - $loff + 1, $level);
1838 sub statement_lines {
1841 # Strip the diff line prefixes and rip blank lines at start and end.
1842 $stmt =~ s/(^|\n)./$1/g;
1846 my @stmt_lines = ($stmt =~ /\n/g);
1848 return $#stmt_lines + 2;
1851 sub statement_rawlines {
1854 my @stmt_lines = ($stmt =~ /\n/g);
1856 return $#stmt_lines + 2;
1859 sub statement_block_size {
1862 $stmt =~ s/(^|\n)./$1/g;
1868 my @stmt_lines = ($stmt =~ /\n/g);
1869 my @stmt_statements = ($stmt =~ /;/g);
1871 my $stmt_lines = $#stmt_lines + 2;
1872 my $stmt_statements = $#stmt_statements + 1;
1874 if ($stmt_lines > $stmt_statements) {
1877 return $stmt_statements;
1881 sub ctx_statement_full {
1882 my ($linenr, $remain, $off) = @_;
1883 my ($statement, $condition, $level);
1887 # Grab the first conditional/block pair.
1888 ($statement, $condition, $linenr, $remain, $off, $level) =
1889 ctx_statement_block($linenr, $remain, $off);
1890 #print "F: c<$condition> s<$statement> remain<$remain>\n";
1891 push(@chunks, [ $condition, $statement ]);
1892 if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) {
1893 return ($level, $linenr, @chunks);
1896 # Pull in the following conditional/block pairs and see if they
1897 # could continue the statement.
1899 ($statement, $condition, $linenr, $remain, $off, $level) =
1900 ctx_statement_block($linenr, $remain, $off);
1901 #print "C: c<$condition> s<$statement> remain<$remain>\n";
1902 last if (!($remain > 0 && $condition =~ /^(?:\s*\n[+-])*\s*(?:else|do)\b/s));
1904 push(@chunks, [ $condition, $statement ]);
1907 return ($level, $linenr, @chunks);
1911 my ($linenr, $remain, $outer, $open, $close, $off) = @_;
1913 my $start = $linenr - 1;
1920 my @stack = ($level);
1921 for ($line = $start; $remain > 0; $line++) {
1922 next if ($rawlines[$line] =~ /^-/);
1925 $blk .= $rawlines[$line];
1927 # Handle nested #if/#else.
1928 if ($lines[$line] =~ /^.\s*#\s*(?:ifndef|ifdef|if)\s/) {
1929 push(@stack, $level);
1930 } elsif ($lines[$line] =~ /^.\s*#\s*(?:else|elif)\b/) {
1931 $level = $stack[$#stack - 1];
1932 } elsif ($lines[$line] =~ /^.\s*#\s*endif\b/) {
1933 $level = pop(@stack);
1936 foreach my $c (split(//, $lines[$line])) {
1937 ##print "C<$c>L<$level><$open$close>O<$off>\n";
1943 if ($c eq $close && $level > 0) {
1945 last if ($level == 0);
1946 } elsif ($c eq $open) {
1951 if (!$outer || $level <= 1) {
1952 push(@res, $rawlines[$line]);
1955 last if ($level == 0);
1958 return ($level, @res);
1960 sub ctx_block_outer {
1961 my ($linenr, $remain) = @_;
1963 my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0);
1967 my ($linenr, $remain) = @_;
1969 my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0);
1973 my ($linenr, $remain, $off) = @_;
1975 my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off);
1978 sub ctx_block_level {
1979 my ($linenr, $remain) = @_;
1981 return ctx_block_get($linenr, $remain, 0, '{', '}', 0);
1983 sub ctx_statement_level {
1984 my ($linenr, $remain, $off) = @_;
1986 return ctx_block_get($linenr, $remain, 0, '(', ')', $off);
1989 sub ctx_locate_comment {
1990 my ($first_line, $end_line) = @_;
1992 # If c99 comment on the current line, or the line before or after
1993 my ($current_comment) = ($rawlines[$end_line - 1] =~ m@^\+.*(//.*$)@);
1994 return $current_comment if (defined $current_comment);
1995 ($current_comment) = ($rawlines[$end_line - 2] =~ m@^[\+ ].*(//.*$)@);
1996 return $current_comment if (defined $current_comment);
1997 ($current_comment) = ($rawlines[$end_line] =~ m@^[\+ ].*(//.*$)@);
1998 return $current_comment if (defined $current_comment);
2000 # Catch a comment on the end of the line itself.
2001 ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
2002 return $current_comment if (defined $current_comment);
2004 # Look through the context and try and figure out if there is a
2007 $current_comment = '';
2008 for (my $linenr = $first_line; $linenr < $end_line; $linenr++) {
2009 my $line = $rawlines[$linenr - 1];
2011 if ($linenr == $first_line and $line =~ m@^.\s*\*@) {
2014 if ($line =~ m@/\*@) {
2017 if (!$in_comment && $current_comment ne '') {
2018 $current_comment = '';
2020 $current_comment .= $line . "\n" if ($in_comment);
2021 if ($line =~ m@\*/@) {
2026 chomp($current_comment);
2027 return($current_comment);
2029 sub ctx_has_comment {
2030 my ($first_line, $end_line) = @_;
2031 my $cmt = ctx_locate_comment($first_line, $end_line);
2033 ##print "LINE: $rawlines[$end_line - 1 ]\n";
2034 ##print "CMMT: $cmt\n";
2036 return ($cmt ne '');
2040 my ($linenr, $cnt) = @_;
2042 my $offset = $linenr - 1;
2047 $line = $rawlines[$offset++];
2048 next if (defined($line) && $line =~ /^-/);
2056 my ($linenr, $lc) = @_;
2058 my $stat_real = raw_line($linenr, 0);
2059 for (my $count = $linenr + 1; $count <= $lc; $count++) {
2060 $stat_real = $stat_real . "\n" . raw_line($count, 0);
2067 my ($linenr, $cnt, $here) = @_;
2069 my $herectx = $here . "\n";
2070 for (my $n = 0; $n < $cnt; $n++) {
2071 $herectx .= raw_line($linenr, $n) . "\n";
2082 while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) {
2085 $coded = sprintf("^%c", unpack('C', $2) + 64);
2094 my $av_preprocessor = 0;
2099 sub annotate_reset {
2100 $av_preprocessor = 0;
2102 @av_paren_type = ('E');
2103 $av_pend_colon = 'O';
2106 sub annotate_values {
2107 my ($stream, $type) = @_;
2110 my $var = '_' x length($stream);
2113 print "$stream\n" if ($dbg_values > 1);
2115 while (length($cur)) {
2116 @av_paren_type = ('E') if ($#av_paren_type < 0);
2117 print " <" . join('', @av_paren_type) .
2118 "> <$type> <$av_pending>" if ($dbg_values > 1);
2119 if ($cur =~ /^(\s+)/o) {
2120 print "WS($1)\n" if ($dbg_values > 1);
2121 if ($1 =~ /\n/ && $av_preprocessor) {
2122 $type = pop(@av_paren_type);
2123 $av_preprocessor = 0;
2126 } elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') {
2127 print "CAST($1)\n" if ($dbg_values > 1);
2128 push(@av_paren_type, $type);
2131 } elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) {
2132 print "DECLARE($1)\n" if ($dbg_values > 1);
2135 } elsif ($cur =~ /^($Modifier)\s*/) {
2136 print "MODIFIER($1)\n" if ($dbg_values > 1);
2139 } elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) {
2140 print "DEFINE($1,$2)\n" if ($dbg_values > 1);
2141 $av_preprocessor = 1;
2142 push(@av_paren_type, $type);
2148 } elsif ($cur =~ /^(\#\s*(?:undef\s*$Ident|include\b))/o) {
2149 print "UNDEF($1)\n" if ($dbg_values > 1);
2150 $av_preprocessor = 1;
2151 push(@av_paren_type, $type);
2153 } elsif ($cur =~ /^(\#\s*(?:ifdef|ifndef|if))/o) {
2154 print "PRE_START($1)\n" if ($dbg_values > 1);
2155 $av_preprocessor = 1;
2157 push(@av_paren_type, $type);
2158 push(@av_paren_type, $type);
2161 } elsif ($cur =~ /^(\#\s*(?:else|elif))/o) {
2162 print "PRE_RESTART($1)\n" if ($dbg_values > 1);
2163 $av_preprocessor = 1;
2165 push(@av_paren_type, $av_paren_type[$#av_paren_type]);
2169 } elsif ($cur =~ /^(\#\s*(?:endif))/o) {
2170 print "PRE_END($1)\n" if ($dbg_values > 1);
2172 $av_preprocessor = 1;
2174 # Assume all arms of the conditional end as this
2175 # one does, and continue as if the #endif was not here.
2176 pop(@av_paren_type);
2177 push(@av_paren_type, $type);
2180 } elsif ($cur =~ /^(\\\n)/o) {
2181 print "PRECONT($1)\n" if ($dbg_values > 1);
2183 } elsif ($cur =~ /^(__attribute__)\s*\(?/o) {
2184 print "ATTR($1)\n" if ($dbg_values > 1);
2185 $av_pending = $type;
2188 } elsif ($cur =~ /^(sizeof)\s*(\()?/o) {
2189 print "SIZEOF($1)\n" if ($dbg_values > 1);
2195 } elsif ($cur =~ /^(if|while|for)\b/o) {
2196 print "COND($1)\n" if ($dbg_values > 1);
2200 } elsif ($cur =~/^(case)/o) {
2201 print "CASE($1)\n" if ($dbg_values > 1);
2202 $av_pend_colon = 'C';
2205 } elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) {
2206 print "KEYWORD($1)\n" if ($dbg_values > 1);
2209 } elsif ($cur =~ /^(\()/o) {
2210 print "PAREN('$1')\n" if ($dbg_values > 1);
2211 push(@av_paren_type, $av_pending);
2215 } elsif ($cur =~ /^(\))/o) {
2216 my $new_type = pop(@av_paren_type);
2217 if ($new_type ne '_') {
2219 print "PAREN('$1') -> $type\n"
2220 if ($dbg_values > 1);
2222 print "PAREN('$1')\n" if ($dbg_values > 1);
2225 } elsif ($cur =~ /^($Ident)\s*\(/o) {
2226 print "FUNC($1)\n" if ($dbg_values > 1);
2230 } elsif ($cur =~ /^($Ident\s*):(?:\s*\d+\s*(,|=|;))?/) {
2231 if (defined $2 && $type eq 'C' || $type eq 'T') {
2232 $av_pend_colon = 'B';
2233 } elsif ($type eq 'E') {
2234 $av_pend_colon = 'L';
2236 print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1);
2239 } elsif ($cur =~ /^($Ident|$Constant)/o) {
2240 print "IDENT($1)\n" if ($dbg_values > 1);
2243 } elsif ($cur =~ /^($Assignment)/o) {
2244 print "ASSIGN($1)\n" if ($dbg_values > 1);
2247 } elsif ($cur =~/^(;|{|})/) {
2248 print "END($1)\n" if ($dbg_values > 1);
2250 $av_pend_colon = 'O';
2252 } elsif ($cur =~/^(,)/) {
2253 print "COMMA($1)\n" if ($dbg_values > 1);
2256 } elsif ($cur =~ /^(\?)/o) {
2257 print "QUESTION($1)\n" if ($dbg_values > 1);
2260 } elsif ($cur =~ /^(:)/o) {
2261 print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1);
2263 substr($var, length($res), 1, $av_pend_colon);
2264 if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') {
2269 $av_pend_colon = 'O';
2271 } elsif ($cur =~ /^(\[)/o) {
2272 print "CLOSE($1)\n" if ($dbg_values > 1);
2275 } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) {
2278 print "OPV($1)\n" if ($dbg_values > 1);
2285 substr($var, length($res), 1, $variant);
2288 } elsif ($cur =~ /^($Operators)/o) {
2289 print "OP($1)\n" if ($dbg_values > 1);
2290 if ($1 ne '++' && $1 ne '--') {
2294 } elsif ($cur =~ /(^.)/o) {
2295 print "C($1)\n" if ($dbg_values > 1);
2298 $cur = substr($cur, length($1));
2299 $res .= $type x length($1);
2303 return ($res, $var);
2307 my ($possible, $line) = @_;
2308 my $notPermitted = qr{(?:
2325 ^(?:typedef|struct|enum)\b
2327 warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
2328 if ($possible !~ $notPermitted) {
2329 # Check for modifiers.
2330 $possible =~ s/\s*$Storage\s*//g;
2331 $possible =~ s/\s*$Sparse\s*//g;
2332 if ($possible =~ /^\s*$/) {
2334 } elsif ($possible =~ /\s/) {
2335 $possible =~ s/\s*$Type\s*//g;
2336 for my $modifier (split(' ', $possible)) {
2337 if ($modifier !~ $notPermitted) {
2338 warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible);
2339 push(@modifierListFile, $modifier);
2344 warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible);
2345 push(@typeListFile, $possible);
2349 warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1);
2358 $type =~ tr/[a-z]/[A-Z]/;
2360 return defined $use_type{$type} if (scalar keys %use_type > 0);
2362 return !defined $ignore_type{$type};
2366 my ($level, $type, $msg) = @_;
2368 if (!show_type($type) ||
2369 (defined $tst_only && $msg !~ /\Q$tst_only\E/)) {
2374 if ($level eq 'ERROR') {
2376 } elsif ($level eq 'WARNING') {
2382 $output .= $prefix . $level . ':';
2384 $output .= BLUE if ($color);
2385 $output .= "$type:";
2387 $output .= RESET if ($color);
2388 $output .= ' ' . $msg . "\n";
2391 my @lines = split("\n", $output, -1);
2392 splice(@lines, 1, 1);
2393 $output = join("\n", @lines);
2397 $output = (split('\n', $output))[0] . "\n";
2400 if ($verbose && exists($verbose_messages{$type}) &&
2401 !exists($verbose_emitted{$type})) {
2402 $output .= $verbose_messages{$type} . "\n\n";
2403 $verbose_emitted{$type} = 1;
2406 push(our @report, $output);
2415 sub fixup_current_range {
2416 my ($lineRef, $offset, $length) = @_;
2418 if ($$lineRef =~ /^\@\@ -\d+,\d+ \+(\d+),(\d+) \@\@/) {
2421 my $no = $o + $offset;
2422 my $nl = $l + $length;
2423 $$lineRef =~ s/\+$o,$l \@\@/\+$no,$nl \@\@/;
2427 sub fix_inserted_deleted_lines {
2428 my ($linesRef, $insertedRef, $deletedRef) = @_;
2430 my $range_last_linenr = 0;
2431 my $delta_offset = 0;
2436 my $next_insert = 0;
2437 my $next_delete = 0;
2441 my $inserted = @{$insertedRef}[$next_insert++];
2442 my $deleted = @{$deletedRef}[$next_delete++];
2444 foreach my $old_line (@{$linesRef}) {
2446 my $line = $old_line; #don't modify the array
2447 if ($line =~ /^(?:\+\+\+|\-\-\-)\s+\S+/) { #new filename
2449 } elsif ($line =~ /^\@\@ -\d+,\d+ \+\d+,\d+ \@\@/) { #new hunk
2450 $range_last_linenr = $new_linenr;
2451 fixup_current_range(\$line, $delta_offset, 0);
2454 while (defined($deleted) && ${$deleted}{'LINENR'} == $old_linenr) {
2455 $deleted = @{$deletedRef}[$next_delete++];
2457 fixup_current_range(\$lines[$range_last_linenr], $delta_offset--, -1);
2460 while (defined($inserted) && ${$inserted}{'LINENR'} == $old_linenr) {
2461 push(@lines, ${$inserted}{'LINE'});
2462 $inserted = @{$insertedRef}[$next_insert++];
2464 fixup_current_range(\$lines[$range_last_linenr], $delta_offset++, 1);
2468 push(@lines, $line);
2478 sub fix_insert_line {
2479 my ($linenr, $line) = @_;
2485 push(@fixed_inserted, $inserted);
2488 sub fix_delete_line {
2489 my ($linenr, $line) = @_;
2496 push(@fixed_deleted, $deleted);
2500 my ($type, $msg) = @_;
2502 if (report("ERROR", $type, $msg)) {
2510 my ($type, $msg) = @_;
2512 if (report("WARNING", $type, $msg)) {
2520 my ($type, $msg) = @_;
2522 if ($check && report("CHECK", $type, $msg)) {
2530 sub check_absolute_file {
2531 my ($absolute, $herecurr) = @_;
2532 my $file = $absolute;
2534 ##print "absolute<$absolute>\n";
2536 # See if any suffix of this path is a path within the tree.
2537 while ($file =~ s@^[^/]*/@@) {
2538 if (-f "$root/$file") {
2539 ##print "file<$file>\n";
2547 # It is, so see if the prefix is acceptable.
2548 my $prefix = $absolute;
2549 substr($prefix, -length($file)) = '';
2551 ##print "prefix<$prefix>\n";
2552 if ($prefix ne ".../") {
2553 WARN("USE_RELATIVE_PATH",
2554 "use relative pathname instead of absolute in changelog text\n" . $herecurr);
2561 $string =~ s/^\s+|\s+$//g;
2569 $string =~ s/^\s+//;
2577 $string =~ s/\s+$//;
2582 sub string_find_replace {
2583 my ($string, $find, $replace) = @_;
2585 $string =~ s/$find/$replace/g;
2593 my $source_indent = $tabsize;
2594 my $max_spaces_before_tab = $source_indent - 1;
2595 my $spaces_to_tab = " " x $source_indent;
2597 #convert leading spaces to tabs
2598 1 while $leading =~ s@^([\t]*)$spaces_to_tab@$1\t@g;
2599 #Remove spaces before a tab
2600 1 while $leading =~ s@^([\t]*)( {1,$max_spaces_before_tab})\t@$1\t@g;
2605 sub pos_last_openparen {
2610 my $opens = $line =~ tr/\(/\(/;
2611 my $closes = $line =~ tr/\)/\)/;
2613 my $last_openparen = 0;
2615 if (($opens == 0) || ($closes >= $opens)) {
2619 my $len = length($line);
2621 for ($pos = 0; $pos < $len; $pos++) {
2622 my $string = substr($line, $pos);
2623 if ($string =~ /^($FuncArg|$balanced_parens)/) {
2624 $pos += length($1) - 1;
2625 } elsif (substr($line, $pos, 1) eq '(') {
2626 $last_openparen = $pos;
2627 } elsif (index($string, '(') == -1) {
2632 return length(expand_tabs(substr($line, 0, $last_openparen))) + 1;
2635 sub get_raw_comment {
2636 my ($line, $rawline) = @_;
2639 for my $i (0 .. (length($line) - 1)) {
2640 if (substr($line, $i, 1) eq "$;") {
2641 $comment .= substr($rawline, $i, 1);
2648 sub exclude_global_initialisers {
2649 my ($realfile) = @_;
2651 # Do not check for BPF programs (tools/testing/selftests/bpf/progs/*.c, samples/bpf/*_kern.c, *.bpf.c).
2652 return $realfile =~ m@^tools/testing/selftests/bpf/progs/.*\.c$@ ||
2653 $realfile =~ m@^samples/bpf/.*_kern\.c$@ ||
2654 $realfile =~ m@/bpf/.*\.bpf\.c$@;
2658 my $filename = shift;
2664 my $stashrawline="";
2674 my $authorsignoff = 0;
2675 my $author_sob = '';
2677 my $is_binding_patch = -1;
2678 my $in_header_lines = $file ? 0 : 1;
2679 my $in_commit_log = 0; #Scanning lines before patch
2680 my $has_patch_separator = 0; #Found a --- line
2681 my $has_commit_log = 0; #Encountered lines before patch
2682 my $commit_log_lines = 0; #Number of commit log lines
2683 my $commit_log_possible_stack_dump = 0;
2684 my $commit_log_long_line = 0;
2685 my $commit_log_has_diff = 0;
2686 my $reported_maintainer_file = 0;
2687 my $non_utf8_charset = 0;
2689 my $last_git_commit_id_linenr = -1;
2691 my $last_blank_line = 0;
2692 my $last_coalesced_string_linenr = -1;
2700 # Trace the real file/line as we go.
2705 my $context_function; #undef'd unless there's a known function
2707 my $comment_edge = 0;
2711 my $prev_values = 'E';
2714 my %suppress_ifbraces;
2715 my %suppress_whiletrailers;
2716 my %suppress_export;
2717 my $suppress_statement = 0;
2719 my %signatures = ();
2721 # Pre-scan the patch sanitizing the lines.
2722 # Pre-scan the patch looking for any __setup documentation.
2724 my @setup_docs = ();
2727 my $camelcase_file_seeded = 0;
2729 my $checklicenseline = 1;
2731 sanitise_line_reset();
2733 foreach my $rawline (@rawlines) {
2737 push(@fixed, $rawline) if ($fix);
2739 if ($rawline=~/^\+\+\+\s+(\S+)/) {
2741 if ($1 =~ m@Documentation/admin-guide/kernel-parameters.txt$@) {
2746 if ($rawline =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
2755 # Guestimate if this is a continuing comment. Run
2756 # the context looking for a comment "edge". If this
2757 # edge is a close comment then we must be in a comment
2761 for (my $ln = $linenr + 1; $cnt > 0; $ln++) {
2762 next if (defined $rawlines[$ln - 1] &&
2763 $rawlines[$ln - 1] =~ /^-/);
2765 #print "RAW<$rawlines[$ln - 1]>\n";
2766 last if (!defined $rawlines[$ln - 1]);
2767 if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ &&
2768 $rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) {
2773 if (defined $edge && $edge eq '*/') {
2777 # Guestimate if this is a continuing comment. If this
2778 # is the start of a diff block and this line starts
2779 # ' *' then it is very likely a comment.
2780 if (!defined $edge &&
2781 $rawlines[$linenr] =~ m@^.\s*(?:\*\*+| \*)(?:\s|$)@)
2786 ##print "COMMENT:$in_comment edge<$edge> $rawline\n";
2787 sanitise_line_reset($in_comment);
2789 } elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) {
2790 # Standardise the strings and chars within the input to
2791 # simplify matching -- only bother with positive lines.
2792 $line = sanitise_line($rawline);
2794 push(@lines, $line);
2797 $realcnt-- if ($line =~ /^(?:\+| |$)/);
2802 #print "==>$rawline\n";
2803 #print "-->$line\n";
2805 if ($setup_docs && $line =~ /^\+/) {
2806 push(@setup_docs, $line);
2815 foreach my $line (@lines) {
2818 my $sline = $line; #copy of $line
2819 $sline =~ s/$;/ /g; #with comments as spaces
2821 my $rawline = $rawlines[$linenr - 1];
2822 my $raw_comment = get_raw_comment($line, $rawline);
2824 # check if it's a mode change, rename or start of a patch
2825 if (!$in_commit_log &&
2826 ($line =~ /^ mode change [0-7]+ => [0-7]+ \S+\s*$/ ||
2827 ($line =~ /^rename (?:from|to) \S+\s*$/ ||
2828 $line =~ /^diff --git a\/[\w\/\.\_\-]+ b\/\S+\s*$/))) {
2832 #extract the line range in the file after the patch is applied
2833 if (!$in_commit_log &&
2834 $line =~ /^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@(.*)/) {
2837 $first_line = $linenr + 1;
2847 %suppress_ifbraces = ();
2848 %suppress_whiletrailers = ();
2849 %suppress_export = ();
2850 $suppress_statement = 0;
2851 if ($context =~ /\b(\w+)\s*\(/) {
2852 $context_function = $1;
2854 undef $context_function;
2858 # track the line number as we move through the hunk, note that
2859 # new versions of GNU diff omit the leading space on completely
2860 # blank context lines so we need to count that too.
2861 } elsif ($line =~ /^( |\+|$)/) {
2863 $realcnt-- if ($realcnt != 0);
2865 # Measure the line length and indent.
2866 ($length, $indent) = line_stats($rawline);
2868 # Track the previous line.
2869 ($prevline, $stashline) = ($stashline, $line);
2870 ($previndent, $stashindent) = ($stashindent, $indent);
2871 ($prevrawline, $stashrawline) = ($stashrawline, $rawline);
2873 #warn "line<$line>\n";
2875 } elsif ($realcnt == 1) {
2879 my $hunk_line = ($realcnt != 0);
2881 $here = "#$linenr: " if (!$file);
2882 $here = "#$realline: " if ($file);
2885 # extract the filename as it passes
2886 if ($line =~ /^diff --git.*?(\S+)$/) {
2888 $realfile =~ s@^([^/]*)/@@ if (!$file);
2891 } elsif ($line =~ /^\+\+\+\s+(\S+)/) {
2893 $realfile =~ s@^([^/]*)/@@ if (!$file);
2897 if (!$file && $tree && $p1_prefix ne '' &&
2898 -e "$root/$p1_prefix") {
2899 WARN("PATCH_PREFIX",
2900 "patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
2903 if ($realfile =~ m@^include/asm/@) {
2904 ERROR("MODIFIED_INCLUDE_ASM",
2905 "do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
2910 #make up the handle for any error we report on this line
2912 $prefix = "$realfile:$realline: "
2915 $prefix = "$filename:$realline: ";
2917 $prefix = "$filename:$linenr: ";
2922 if (is_maintained_obsolete($realfile)) {
2924 "$realfile is marked as 'obsolete' in the MAINTAINERS hierarchy. No unnecessary modifications please.\n");
2926 if ($realfile =~ m@^(?:drivers/net/|net/|drivers/staging/)@) {
2929 $check = $check_orig;
2931 $checklicenseline = 1;
2933 if ($realfile !~ /^MAINTAINERS/) {
2934 my $last_binding_patch = $is_binding_patch;
2936 $is_binding_patch = () = $realfile =~ m@^(?:Documentation/devicetree/|include/dt-bindings/)@;
2938 if (($last_binding_patch != -1) &&
2939 ($last_binding_patch ^ $is_binding_patch)) {
2940 WARN("DT_SPLIT_BINDING_PATCH",
2941 "DT binding docs and includes should be a separate patch. See: Documentation/devicetree/bindings/submitting-patches.rst\n");
2948 $here .= "FILE: $realfile:$realline:" if ($realcnt != 0);
2950 my $hereline = "$here\n$rawline\n";
2951 my $herecurr = "$here\n$rawline\n";
2952 my $hereprev = "$here\n$prevrawline\n$rawline\n";
2954 $cnt_lines++ if ($realcnt != 0);
2956 # Verify the existence of a commit log if appropriate
2957 # 2 is used because a $signature is counted in $commit_log_lines
2958 if ($in_commit_log) {
2959 if ($line !~ /^\s*$/) {
2960 $commit_log_lines++; #could be a $signature
2962 } elsif ($has_commit_log && $commit_log_lines < 2) {
2963 WARN("COMMIT_MESSAGE",
2964 "Missing commit description - Add an appropriate one\n");
2965 $commit_log_lines = 2; #warn only once
2968 # Check if the commit log has what seems like a diff which can confuse patch
2969 if ($in_commit_log && !$commit_log_has_diff &&
2970 (($line =~ m@^\s+diff\b.*a/([\w/]+)@ &&
2971 $line =~ m@^\s+diff\b.*a/[\w/]+\s+b/$1\b@) ||
2972 $line =~ m@^\s*(?:\-\-\-\s+a/|\+\+\+\s+b/)@ ||
2973 $line =~ m/^\s*\@\@ \-\d+,\d+ \+\d+,\d+ \@\@/)) {
2974 ERROR("DIFF_IN_COMMIT_MSG",
2975 "Avoid using diff content in the commit message - patch(1) might not work\n" . $herecurr);
2976 $commit_log_has_diff = 1;
2979 # Check for incorrect file permissions
2980 if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
2981 my $permhere = $here . "FILE: $realfile\n";
2982 if ($realfile !~ m@scripts/@ &&
2983 $realfile !~ /\.(py|pl|awk|sh)$/) {
2984 ERROR("EXECUTE_PERMISSIONS",
2985 "do not set execute permissions for source files\n" . $permhere);
2989 # Check the patch for a From:
2990 if (decode("MIME-Header", $line) =~ /^From:\s*(.*)/) {
2992 my $curline = $linenr;
2993 while(defined($rawlines[$curline]) && ($rawlines[$curline++] =~ /^[ \t]\s*(.*)/)) {
2996 $author = encode("utf8", $author) if ($line =~ /=\?utf-8\?/i);
2998 $author = reformat_email($author);
3001 # Check the patch for a signoff:
3002 if ($line =~ /^\s*signed-off-by:\s*(.*)/i) {
3005 if ($author ne '' && $authorsignoff != 1) {
3006 if (same_email_addresses($1, $author)) {
3010 my ($email_name, $email_comment, $email_address, $comment1) = parse_email($ctx);
3011 my ($author_name, $author_comment, $author_address, $comment2) = parse_email($author);
3013 if (lc $email_address eq lc $author_address && $email_name eq $author_name) {
3016 } elsif (lc $email_address eq lc $author_address) {
3019 } elsif ($email_name eq $author_name) {
3023 my $address1 = $email_address;
3024 my $address2 = $author_address;
3026 if ($address1 =~ /(\S+)\+\S+(\@.*)/) {
3029 if ($address2 =~ /(\S+)\+\S+(\@.*)/) {
3032 if ($address1 eq $address2) {
3040 # OpenOCD specific: Begin: Extend list of checkpatch tests to ignore
3041 if ($in_commit_log && $line =~ /^\s*Checkpatch-ignore:\s*(.*)/) {
3042 my @array = split(/[\s,]+/, $1);
3043 hash_save_array_words(\%ignore_type, \@array);
3045 # OpenOCD specific: End
3047 # Check for patch separator
3048 if ($line =~ /^---$/) {
3049 $has_patch_separator = 1;
3053 # Check if MAINTAINERS is being updated. If so, there's probably no need to
3054 # emit the "does MAINTAINERS need updating?" message on file add/move/delete
3055 if ($line =~ /^\s*MAINTAINERS\s*\|/) {
3056 $reported_maintainer_file = 1;
3059 # Check signature styles
3060 if (!$in_header_lines &&
3061 $line =~ /^(\s*)([a-z0-9_-]+by:|$signature_tags)(\s*)(.*)/i) {
3062 my $space_before = $1;
3064 my $space_after = $3;
3066 my $ucfirst_sign_off = ucfirst(lc($sign_off));
3068 if ($sign_off !~ /$signature_tags/) {
3069 my $suggested_signature = find_standard_signature($sign_off);
3070 if ($suggested_signature eq "") {
3071 WARN("BAD_SIGN_OFF",
3072 "Non-standard signature: $sign_off\n" . $herecurr);
3074 if (WARN("BAD_SIGN_OFF",
3075 "Non-standard signature: '$sign_off' - perhaps '$suggested_signature'?\n" . $herecurr) &&
3077 $fixed[$fixlinenr] =~ s/$sign_off/$suggested_signature/;
3081 if (defined $space_before && $space_before ne "") {
3082 if (WARN("BAD_SIGN_OFF",
3083 "Do not use whitespace before $ucfirst_sign_off\n" . $herecurr) &&
3085 $fixed[$fixlinenr] =
3086 "$ucfirst_sign_off $email";
3089 if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
3090 if (WARN("BAD_SIGN_OFF",
3091 "'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr) &&
3093 $fixed[$fixlinenr] =
3094 "$ucfirst_sign_off $email";
3098 if (!defined $space_after || $space_after ne " ") {
3099 if (WARN("BAD_SIGN_OFF",
3100 "Use a single space after $ucfirst_sign_off\n" . $herecurr) &&
3102 $fixed[$fixlinenr] =
3103 "$ucfirst_sign_off $email";
3107 my ($email_name, $name_comment, $email_address, $comment) = parse_email($email);
3108 my $suggested_email = format_email(($email_name, $name_comment, $email_address, $comment));
3109 if ($suggested_email eq "") {
3110 ERROR("BAD_SIGN_OFF",
3111 "Unrecognized email address: '$email'\n" . $herecurr);
3113 my $dequoted = $suggested_email;
3114 $dequoted =~ s/^"//;
3115 $dequoted =~ s/" </ </;
3116 # Don't force email to have quotes
3117 # Allow just an angle bracketed address
3118 if (!same_email_addresses($email, $suggested_email)) {
3119 if (WARN("BAD_SIGN_OFF",
3120 "email address '$email' might be better as '$suggested_email'\n" . $herecurr) &&
3122 $fixed[$fixlinenr] =~ s/\Q$email\E/$suggested_email/;
3126 # Address part shouldn't have comments
3127 my $stripped_address = $email_address;
3128 $stripped_address =~ s/\([^\(\)]*\)//g;
3129 if ($email_address ne $stripped_address) {
3130 if (WARN("BAD_SIGN_OFF",
3131 "address part of email should not have comments: '$email_address'\n" . $herecurr) &&
3133 $fixed[$fixlinenr] =~ s/\Q$email_address\E/$stripped_address/;
3137 # Only one name comment should be allowed
3138 my $comment_count = () = $name_comment =~ /\([^\)]+\)/g;
3139 if ($comment_count > 1) {
3140 WARN("BAD_SIGN_OFF",
3141 "Use a single name comment in email: '$email'\n" . $herecurr);
3145 # stable@vger.kernel.org or stable@kernel.org shouldn't
3146 # have an email name. In addition comments should strictly
3148 if ($email =~ /^.*stable\@(?:vger\.)?kernel\.org/i) {
3149 if (($comment ne "" && $comment !~ /^#.+/) ||
3150 ($email_name ne "")) {
3151 my $cur_name = $email_name;
3152 my $new_comment = $comment;
3153 $cur_name =~ s/[a-zA-Z\s\-\"]+//g;
3155 # Remove brackets enclosing comment text
3156 # and # from start of comments to get comment text
3157 $new_comment =~ s/^\((.*)\)$/$1/;
3158 $new_comment =~ s/^\[(.*)\]$/$1/;
3159 $new_comment =~ s/^[\s\#]+|\s+$//g;
3161 $new_comment = trim("$new_comment $cur_name") if ($cur_name ne $new_comment);
3162 $new_comment = " # $new_comment" if ($new_comment ne "");
3163 my $new_email = "$email_address$new_comment";
3165 if (WARN("BAD_STABLE_ADDRESS_STYLE",
3166 "Invalid email format for stable: '$email', prefer '$new_email'\n" . $herecurr) &&
3168 $fixed[$fixlinenr] =~ s/\Q$email\E/$new_email/;
3171 } elsif ($comment ne "" && $comment !~ /^(?:#.+|\(.+\))$/) {
3172 my $new_comment = $comment;
3174 # Extract comment text from within brackets or
3175 # c89 style /*...*/ comments
3176 $new_comment =~ s/^\[(.*)\]$/$1/;
3177 $new_comment =~ s/^\/\*(.*)\*\/$/$1/;
3179 $new_comment = trim($new_comment);
3180 $new_comment =~ s/^[^\w]$//; # Single lettered comment with non word character is usually a typo
3181 $new_comment = "($new_comment)" if ($new_comment ne "");
3182 my $new_email = format_email($email_name, $name_comment, $email_address, $new_comment);
3184 if (WARN("BAD_SIGN_OFF",
3185 "Unexpected content after email: '$email', should be: '$new_email'\n" . $herecurr) &&
3187 $fixed[$fixlinenr] =~ s/\Q$email\E/$new_email/;
3192 # Check for duplicate signatures
3193 my $sig_nospace = $line;
3194 $sig_nospace =~ s/\s//g;
3195 $sig_nospace = lc($sig_nospace);
3196 if (defined $signatures{$sig_nospace}) {
3197 WARN("BAD_SIGN_OFF",
3198 "Duplicate signature\n" . $herecurr);
3200 $signatures{$sig_nospace} = 1;
3203 # Check Co-developed-by: immediately followed by Signed-off-by: with same name and email
3204 if ($sign_off =~ /^co-developed-by:$/i) {
3205 if ($email eq $author) {
3206 WARN("BAD_SIGN_OFF",
3207 "Co-developed-by: should not be used to attribute nominal patch author '$author'\n" . "$here\n" . $rawline);
3209 if (!defined $lines[$linenr]) {
3210 WARN("BAD_SIGN_OFF",
3211 "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline);
3212 } elsif ($rawlines[$linenr] !~ /^\s*signed-off-by:\s*(.*)/i) {
3213 WARN("BAD_SIGN_OFF",
3214 "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
3215 } elsif ($1 ne $email) {
3216 WARN("BAD_SIGN_OFF",
3217 "Co-developed-by and Signed-off-by: name/email do not match \n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
3222 # Check email subject for common tools that don't need to be mentioned
3223 if ($in_header_lines &&
3224 $line =~ /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {
3225 WARN("EMAIL_SUBJECT",
3226 "A patch subject line should describe the change not the tool that found it\n" . $herecurr);
3229 # Check for Gerrit Change-Ids not in any patch context
3230 if ($realfile eq '' && !$has_patch_separator && $line =~ /^\s*change-id:/i) {
3231 if (ERROR("GERRIT_CHANGE_ID",
3232 "Remove Gerrit Change-Id's before submitting upstream\n" . $herecurr) &&
3234 fix_delete_line($fixlinenr, $rawline);
3238 # Check if the commit log is in a possible stack dump
3239 if ($in_commit_log && !$commit_log_possible_stack_dump &&
3240 ($line =~ /^\s*(?:WARNING:|BUG:)/ ||
3241 $line =~ /^\s*\[\s*\d+\.\d{6,6}\s*\]/ ||
3243 $line =~ /^\s*\[\<[0-9a-fA-F]{8,}\>\]/) ||
3244 $line =~ /^(?:\s+\w+:\s+[0-9a-fA-F]+){3,3}/ ||
3245 $line =~ /^\s*\#\d+\s*\[[0-9a-fA-F]+\]\s*\w+ at [0-9a-fA-F]+/) {
3246 # stack dump address styles
3247 $commit_log_possible_stack_dump = 1;
3250 # Check for line lengths > 75 in commit log, warn once
3251 if ($in_commit_log && !$commit_log_long_line &&
3252 length($line) > 75 &&
3253 !($line =~ /^\s*[a-zA-Z0-9_\/\.]+\s+\|\s+\d+/ ||
3254 # file delta changes
3255 $line =~ /^\s*(?:[\w\.\-\+]*\/)++[\w\.\-\+]+:/ ||
3257 $line =~ /^\s*(?:Fixes:|Link:|$signature_tags)/i ||
3258 # A Fixes: or Link: line or signature tag line
3259 $commit_log_possible_stack_dump)) {
3260 WARN("COMMIT_LOG_LONG_LINE",
3261 "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
3262 $commit_log_long_line = 1;
3265 # Reset possible stack dump if a blank line is found
3266 if ($in_commit_log && $commit_log_possible_stack_dump &&
3268 $commit_log_possible_stack_dump = 0;
3271 # Check for lines starting with a #
3272 if ($in_commit_log && $line =~ /^#/) {
3273 if (WARN("COMMIT_COMMENT_SYMBOL",
3274 "Commit log lines starting with '#' are dropped by git as comments\n" . $herecurr) &&
3276 $fixed[$fixlinenr] =~ s/^/ /;
3280 # Check for git id commit length and improperly formed commit descriptions
3281 # A correctly formed commit description is:
3282 # commit <SHA-1 hash length 12+ chars> ("Complete commit subject")
3283 # with the commit subject '("' prefix and '")' suffix
3284 # This is a fairly compilicated block as it tests for what appears to be
3285 # bare SHA-1 hash with minimum length of 5. It also avoids several types of
3286 # possible SHA-1 matches.
3287 # A commit match can span multiple lines so this block attempts to find a
3288 # complete typical commit on a maximum of 3 lines
3289 if ($perl_version_ok &&
3290 $in_commit_log && !$commit_log_possible_stack_dump &&
3291 $line !~ /^\s*(?:Link|Patchwork|http|https|BugLink|base-commit):/i &&
3292 $line !~ /^This reverts commit [0-9a-f]{7,40}/ &&
3293 (($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
3294 ($line =~ /\bcommit\s*$/i && defined($rawlines[$linenr]) && $rawlines[$linenr] =~ /^\s*[0-9a-f]{5,}\b/i)) ||
3295 ($line =~ /(?:\s|^)[0-9a-f]{12,40}(?:[\s"'\(\[]|$)/i &&
3296 $line !~ /[\<\[][0-9a-f]{12,40}[\>\]]/i &&
3297 $line !~ /\bfixes:\s*[0-9a-f]{12,40}/i))) {
3298 my $init_char = "c";
3299 my $orig_commit = "";
3304 my $id = '0123456789ab';
3305 my $orig_desc = "commit description";
3306 my $description = "";
3307 my $herectx = $herecurr;
3312 if ($line =~ /(?:\bcommit\s+[0-9a-f]{5,}|\bcommit\s*$)/i) {
3313 for (my $n = 0; $n < 2; $n++) {
3314 if ($input =~ /\bcommit\s+[0-9a-f]{5,}\s*($balanced_parens)/i) {
3317 # Always strip leading/trailing parens then double quotes if existing
3318 $orig_desc = substr($orig_desc, 1, -1);
3319 if ($orig_desc =~ /^".*"$/) {
3320 $orig_desc = substr($orig_desc, 1, -1);
3325 last if ($#lines < $linenr + $n);
3326 $input .= " " . trim($rawlines[$linenr + $n]);
3327 $herectx .= "$rawlines[$linenr + $n]\n";
3329 $herectx = $herecurr if (!$has_parens);
3332 if ($input =~ /\b(c)ommit\s+([0-9a-f]{5,})\b/i) {
3334 $orig_commit = lc($2);
3335 $short = 0 if ($input =~ /\bcommit\s+[0-9a-f]{12,40}/i);
3336 $long = 1 if ($input =~ /\bcommit\s+[0-9a-f]{41,}/i);
3337 $space = 0 if ($input =~ /\bcommit [0-9a-f]/i);
3338 $case = 0 if ($input =~ /\b[Cc]ommit\s+[0-9a-f]{5,40}[^A-F]/);
3339 } elsif ($input =~ /\b([0-9a-f]{12,40})\b/i) {
3340 $orig_commit = lc($1);
3343 ($id, $description) = git_commit_info($orig_commit,
3347 ($short || $long || $space || $case || ($orig_desc ne $description) || !$has_quotes) &&
3348 $last_git_commit_id_linenr != $linenr - 1) {
3349 ERROR("GIT_COMMIT_ID",
3350 "Please use git commit description style 'commit <12+ chars of sha1> (\"<title line>\")' - ie: '${init_char}ommit $id (\"$description\")'\n" . $herectx);
3352 #don't report the next line if this line ends in commit and the sha1 hash is the next line
3353 $last_git_commit_id_linenr = $linenr if ($line =~ /\bcommit\s*$/i);
3356 # Check for added, moved or deleted files
3357 if (!$reported_maintainer_file && !$in_commit_log &&
3358 ($line =~ /^(?:new|deleted) file mode\s*\d+\s*$/ ||
3359 $line =~ /^rename (?:from|to) [\w\/\.\-]+\s*$/ ||
3360 ($line =~ /\{\s*([\w\/\.\-]*)\s*\=\>\s*([\w\/\.\-]*)\s*\}/ &&
3361 (defined($1) || defined($2))))) {
3363 $reported_maintainer_file = 1;
3364 WARN("FILE_PATH_CHANGES",
3365 "added, moved or deleted file(s), does MAINTAINERS need updating?\n" . $herecurr);
3368 # Check for adding new DT bindings not in schema format
3369 if (!$in_commit_log &&
3370 ($line =~ /^new file mode\s*\d+\s*$/) &&
3371 ($realfile =~ m@^Documentation/devicetree/bindings/.*\.txt$@)) {
3372 WARN("DT_SCHEMA_BINDING_PATCH",
3373 "DT bindings should be in DT schema format. See: Documentation/devicetree/bindings/writing-schema.rst\n");
3376 # Check for wrappage within a valid hunk of the file
3377 if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
3378 ERROR("CORRUPTED_PATCH",
3379 "patch seems to be corrupt (line wrapped?)\n" .
3380 $herecurr) if (!$emitted_corrupt++);
3383 # UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
3384 if (($realfile =~ /^$/ || $line =~ /^\+/) &&
3385 $rawline !~ m/^$UTF8*$/) {
3386 my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/);
3388 my $blank = copy_spacing($rawline);
3389 my $ptr = substr($blank, 0, length($utf8_prefix)) . "^";
3390 my $hereptr = "$hereline$ptr\n";
3393 "Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
3396 # Check if it's the start of a commit log
3397 # (not a header line and we haven't seen the patch filename)
3398 if ($in_header_lines && $realfile =~ /^$/ &&
3399 !($rawline =~ /^\s+(?:\S|$)/ ||
3400 $rawline =~ /^(?:commit\b|from\b|[\w-]+:)/i)) {
3401 $in_header_lines = 0;
3403 $has_commit_log = 1;
3406 # Check if there is UTF-8 in a commit log when a mail header has explicitly
3407 # declined it, i.e defined some charset where it is missing.
3408 if ($in_header_lines &&
3409 $rawline =~ /^Content-Type:.+charset="(.+)".*$/ &&
3411 $non_utf8_charset = 1;
3414 if ($in_commit_log && $non_utf8_charset && $realfile =~ /^$/ &&
3415 $rawline =~ /$NON_ASCII_UTF8/) {
3416 WARN("UTF8_BEFORE_PATCH",
3417 "8-bit UTF-8 used in possible commit log\n" . $herecurr);
3420 # Check for absolute kernel paths in commit message
3421 if ($tree && $in_commit_log) {
3422 while ($line =~ m{(?:^|\s)(/\S*)}g) {
3425 if ($file =~ m{^(.*?)(?::\d+)+:?$} &&
3426 check_absolute_file($1, $herecurr)) {
3429 check_absolute_file($file, $herecurr);
3434 # Check for various typo / spelling mistakes
3435 if (defined($misspellings) &&
3436 # OpenOCD specific: Begin: don't check spelling on spelling_file
3437 index($spelling_file, $realfile) + length($realfile) != length($spelling_file) &&
3438 # OpenOCD specific: End
3439 ($in_commit_log || $line =~ /^(?:\+|Subject:)/i)) {
3440 while ($rawline =~ /(?:^|[^\w\-'`])($misspellings)(?:[^\w\-'`]|$)/gi) {
3442 my $blank = copy_spacing($rawline);
3443 my $ptr = substr($blank, 0, $-[1]) . "^" x length($typo);
3444 my $hereptr = "$hereline$ptr\n";
3445 my $typo_fix = $spelling_fix{lc($typo)};
3446 $typo_fix = ucfirst($typo_fix) if ($typo =~ /^[A-Z]/);
3447 $typo_fix = uc($typo_fix) if ($typo =~ /^[A-Z]+$/);
3448 my $msg_level = \&WARN;
3449 $msg_level = \&CHK if ($file);
3450 if (&{$msg_level}("TYPO_SPELLING",
3451 "'$typo' may be misspelled - perhaps '$typo_fix'?\n" . $hereptr) &&
3453 $fixed[$fixlinenr] =~ s/(^|[^A-Za-z@])($typo)($|[^A-Za-z@])/$1$typo_fix$3/;
3458 # check for invalid commit id
3459 if ($in_commit_log && $line =~ /(^fixes:|\bcommit)\s+([0-9a-f]{6,40})\b/i) {
3462 ($id, $description) = git_commit_info($2, undef, undef);
3463 if (!defined($id)) {
3464 WARN("UNKNOWN_COMMIT_ID",
3465 "Unknown commit id '$2', maybe rebased or not pulled?\n" . $herecurr);
3469 # check for repeated words separated by a single space
3470 # avoid false positive from list command eg, '-rw-r--r-- 1 root root'
3471 if (($rawline =~ /^\+/ || $in_commit_log) &&
3472 $rawline !~ /[bcCdDlMnpPs\?-][rwxsStT-]{9}/) {
3473 pos($rawline) = 1 if (!$in_commit_log);
3474 while ($rawline =~ /\b($word_pattern) (?=($word_pattern))/g) {
3478 my $start_pos = $-[1];
3479 my $end_pos = $+[2];
3480 if ($first =~ /(?:struct|union|enum)/) {
3481 pos($rawline) += length($first) + length($second) + 1;
3485 next if (lc($first) ne lc($second));
3486 next if ($first eq 'long');
3488 # check for character before and after the word matches
3489 my $start_char = '';
3491 $start_char = substr($rawline, $start_pos - 1, 1) if ($start_pos > ($in_commit_log ? 0 : 1));
3492 $end_char = substr($rawline, $end_pos, 1) if ($end_pos < length($rawline));
3494 next if ($start_char =~ /^\S$/);
3495 next if (index(" \t.,;?!", $end_char) == -1);
3497 # avoid repeating hex occurrences like 'ff ff fe 09 ...'
3498 if ($first =~ /\b[0-9a-f]{2,}\b/i) {
3499 next if (!exists($allow_repeated_words{lc($first)}));
3502 if (WARN("REPEATED_WORD",
3503 "Possible repeated word: '$first'\n" . $herecurr) &&
3505 $fixed[$fixlinenr] =~ s/\b$first $second\b/$first/;
3509 # if it's a repeated word on consecutive lines in a comment block
3510 if ($prevline =~ /$;+\s*$/ &&
3511 $prevrawline =~ /($word_pattern)\s*$/) {
3513 if ($rawline =~ /^\+\s*\*\s*$last_word /) {
3514 if (WARN("REPEATED_WORD",
3515 "Possible repeated word: '$last_word'\n" . $hereprev) &&
3517 $fixed[$fixlinenr] =~ s/(\+\s*\*\s*)$last_word /$1/;
3523 # ignore non-hunk lines and lines being removed
3524 next if (!$hunk_line || $line =~ /^-/);
3526 #trailing whitespace
3527 if ($line =~ /^\+.*\015/) {
3528 my $herevet = "$here\n" . cat_vet($rawline) . "\n";
3529 if (ERROR("DOS_LINE_ENDINGS",
3530 "DOS line endings\n" . $herevet) &&
3532 $fixed[$fixlinenr] =~ s/[\s\015]+$//;
3534 } elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) {
3535 my $herevet = "$here\n" . cat_vet($rawline) . "\n";
3536 if (ERROR("TRAILING_WHITESPACE",
3537 "trailing whitespace\n" . $herevet) &&
3539 $fixed[$fixlinenr] =~ s/\s+$//;
3545 # Check for FSF mailing addresses.
3546 if ($rawline =~ /\bwrite to the Free/i ||
3547 $rawline =~ /\b675\s+Mass\s+Ave/i ||
3548 $rawline =~ /\b59\s+Temple\s+Pl/i ||
3549 $rawline =~ /\b51\s+Franklin\s+St/i) {
3550 my $herevet = "$here\n" . cat_vet($rawline) . "\n";
3551 my $msg_level = \&ERROR;
3552 $msg_level = \&CHK if ($file);
3553 &{$msg_level}("FSF_MAILING_ADDRESS",
3554 "Do not include the paragraph about writing to the Free Software Foundation's mailing address from the sample GPL notice. The FSF has changed addresses in the past, and may do so again. OpenOCD already includes a copy of the GPL.\n" . $herevet)
3557 # check for Kconfig help text having a real description
3558 # Only applies when adding the entry originally, after that we do not have
3559 # sufficient context to determine whether it is indeed long enough.
3560 if ($realfile =~ /Kconfig/ &&
3561 # 'choice' is usually the last thing on the line (though
3562 # Kconfig supports named choices), so use a word boundary
3563 # (\b) rather than a whitespace character (\s)
3564 $line =~ /^\+\s*(?:config|menuconfig|choice)\b/) {
3568 my $help_length = 0;
3569 while (defined $lines[$ln]) {
3570 my $f = $lines[$ln++];
3572 next if ($f =~ /^-/);
3573 last if ($f !~ /^[\+ ]/); # !patch context
3575 if ($f =~ /^\+\s*(?:bool|tristate|prompt)\s*["']/) {
3579 if ($f =~ /^\+\s*help\s*$/) {
3584 $f =~ s/^.//; # strip patch context [+ ]
3585 $f =~ s/#.*//; # strip # directives
3586 $f =~ s/^\s+//; # strip leading blanks
3587 next if ($f =~ /^$/); # skip blank lines
3589 # At the end of this Kconfig block:
3590 # This only checks context lines in the patch
3591 # and so hopefully shouldn't trigger false
3592 # positives, even though some of these are
3593 # common words in help texts
3594 if ($f =~ /^(?:config|menuconfig|choice|endchoice|
3595 if|endif|menu|endmenu|source)\b/x) {
3598 $help_length++ if ($has_help);
3601 $help_length < $min_conf_desc_length) {
3602 my $stat_real = get_stat_real($linenr, $ln - 1);
3603 WARN("CONFIG_DESCRIPTION",
3604 "please write a help paragraph that fully describes the config symbol\n" . "$here\n$stat_real\n");
3608 # check MAINTAINERS entries
3609 if ($realfile =~ /^MAINTAINERS$/) {
3610 # check MAINTAINERS entries for the right form
3611 if ($rawline =~ /^\+[A-Z]:/ &&
3612 $rawline !~ /^\+[A-Z]:\t\S/) {
3613 if (WARN("MAINTAINERS_STYLE",
3614 "MAINTAINERS entries use one tab after TYPE:\n" . $herecurr) &&
3616 $fixed[$fixlinenr] =~ s/^(\+[A-Z]):\s*/$1:\t/;
3619 # check MAINTAINERS entries for the right ordering too
3620 my $preferred_order = 'MRLSWQBCPTFXNK';
3621 if ($rawline =~ /^\+[A-Z]:/ &&
3622 $prevrawline =~ /^[\+ ][A-Z]:/) {
3623 $rawline =~ /^\+([A-Z]):\s*(.*)/;
3626 $prevrawline =~ /^[\+ ]([A-Z]):\s*(.*)/;
3629 my $curindex = index($preferred_order, $cur);
3630 my $previndex = index($preferred_order, $prev);
3631 if ($curindex < 0) {
3632 WARN("MAINTAINERS_STYLE",
3633 "Unknown MAINTAINERS entry type: '$cur'\n" . $herecurr);
3635 if ($previndex >= 0 && $curindex < $previndex) {
3636 WARN("MAINTAINERS_STYLE",
3637 "Misordered MAINTAINERS entry - list '$cur:' before '$prev:'\n" . $hereprev);
3638 } elsif ((($prev eq 'F' && $cur eq 'F') ||
3639 ($prev eq 'X' && $cur eq 'X')) &&
3640 ($prevval cmp $curval) > 0) {
3641 WARN("MAINTAINERS_STYLE",
3642 "Misordered MAINTAINERS entry - list file patterns in alphabetic order\n" . $hereprev);
3648 if (($realfile =~ /Makefile.*/ || $realfile =~ /Kbuild.*/) &&
3649 ($line =~ /\+(EXTRA_[A-Z]+FLAGS).*/)) {
3652 'EXTRA_AFLAGS' => 'asflags-y',
3653 'EXTRA_CFLAGS' => 'ccflags-y',
3654 'EXTRA_CPPFLAGS' => 'cppflags-y',
3655 'EXTRA_LDFLAGS' => 'ldflags-y',
3658 WARN("DEPRECATED_VARIABLE",
3659 "Use of $flag is deprecated, please use \`$replacement->{$flag} instead.\n" . $herecurr) if ($replacement->{$flag});
3662 # check for DT compatible documentation
3663 if (defined $root &&
3664 (($realfile =~ /\.dtsi?$/ && $line =~ /^\+\s*compatible\s*=\s*\"/) ||
3665 ($realfile =~ /\.[ch]$/ && $line =~ /^\+.*\.compatible\s*=\s*\"/))) {
3667 my @compats = $rawline =~ /\"([a-zA-Z0-9\-\,\.\+_]+)\"/g;
3669 my $dt_path = $root . "/Documentation/devicetree/bindings/";
3670 my $vp_file = $dt_path . "vendor-prefixes.yaml";
3672 foreach my $compat (@compats) {
3673 my $compat2 = $compat;
3674 $compat2 =~ s/\,[a-zA-Z0-9]*\-/\,<\.\*>\-/;
3675 my $compat3 = $compat;
3676 $compat3 =~ s/\,([a-z]*)[0-9]*\-/\,$1<\.\*>\-/;
3677 `grep -Erq "$compat|$compat2|$compat3" $dt_path`;
3679 WARN("UNDOCUMENTED_DT_STRING",
3680 "DT compatible string \"$compat\" appears un-documented -- check $dt_path\n" . $herecurr);
3683 next if $compat !~ /^([a-zA-Z0-9\-]+)\,/;
3685 `grep -Eq "\\"\\^\Q$vendor\E,\\.\\*\\":" $vp_file`;
3687 WARN("UNDOCUMENTED_DT_STRING",
3688 "DT compatible string vendor \"$vendor\" appears un-documented -- check $vp_file\n" . $herecurr);
3693 # check for using SPDX license tag at beginning of files
3694 if ($realline == $checklicenseline) {
3695 if ($rawline =~ /^[ \+]\s*\#\!\s*\//) {
3696 $checklicenseline = 2;
3697 } elsif ($rawline =~ /^\+/) {
3699 if ($realfile =~ /\.(h|s|S)$/) {
3701 } elsif ($realfile =~ /\.(c|dts|dtsi)$/) {
3703 } elsif (($checklicenseline == 2) || $realfile =~ /\.(sh|pl|py|awk|tc|yaml)$/) {
3705 } elsif ($realfile =~ /\.rst$/) {
3707 # OpenOCD specific: Begin
3708 } elsif ($realfile =~ /\.(am|cfg|tcl)$/) {
3710 # OpenOCD specific: End
3713 # check SPDX comment style for .[chsS] files
3714 if ($realfile =~ /\.[chsS]$/ &&
3715 $rawline =~ /SPDX-License-Identifier:/ &&
3716 $rawline !~ m@^\+\s*\Q$comment\E\s*@) {
3717 WARN("SPDX_LICENSE_TAG",
3718 "Improper SPDX comment style for '$realfile', please use '$comment' instead\n" . $herecurr);
3721 if ($comment !~ /^$/ &&
3722 $rawline !~ m@^\+\Q$comment\E SPDX-License-Identifier: @) {
3723 WARN("SPDX_LICENSE_TAG",
3724 "Missing or malformed SPDX-License-Identifier tag in line $checklicenseline\n" . $herecurr);
3725 } elsif ($rawline =~ /(SPDX-License-Identifier: .*)/) {
3726 my $spdx_license = $1;
3727 if (!is_SPDX_License_valid($spdx_license)) {
3728 WARN("SPDX_LICENSE_TAG",
3729 "'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
3731 if ($realfile =~ m@^Documentation/devicetree/bindings/@ &&
3732 not $spdx_license =~ /GPL-2\.0.*BSD-2-Clause/) {
3733 my $msg_level = \&WARN;
3734 $msg_level = \&CHK if ($file);
3735 if (&{$msg_level}("SPDX_LICENSE_TAG",
3737 "DT binding documents should be licensed (GPL-2.0-only OR BSD-2-Clause)\n" . $herecurr) &&
3739 $fixed[$fixlinenr] =~ s/SPDX-License-Identifier: .*/SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)/;
3746 # check for embedded filenames
3747 if ($rawline =~ /^\+.*\Q$realfile\E/) {
3748 WARN("EMBEDDED_FILENAME",
3749 "It's generally not useful to have the filename in the file\n" . $herecurr);
3752 # check we are in a valid source file if not then ignore this hunk
3753 next if ($realfile !~ /\.(h|c|s|S|sh|dtsi|dts)$/);
3755 # check for using SPDX-License-Identifier on the wrong line number
3756 if ($realline != $checklicenseline &&
3757 $rawline =~ /\bSPDX-License-Identifier:/ &&
3758 substr($line, @-, @+ - @-) eq "$;" x (@+ - @-)) {
3759 WARN("SPDX_LICENSE_TAG",
3760 "Misplaced SPDX-License-Identifier tag - use line $checklicenseline instead\n" . $herecurr);
3763 # line length limit (with some exclusions)
3765 # There are a few types of lines that may extend beyond $max_line_length:
3766 # logging functions like pr_info that end in a string
3767 # lines with a single string
3768 # #defines that are a single string
3769 # lines with an RFC3986 like URL
3771 # There are 3 different line length message types:
3772 # LONG_LINE_COMMENT a comment starts before but extends beyond $max_line_length
3773 # LONG_LINE_STRING a string starts before but extends beyond $max_line_length
3774 # LONG_LINE all other lines longer than $max_line_length
3776 # if LONG_LINE is ignored, the other 2 types are also ignored
3779 if ($line =~ /^\+/ && $length > $max_line_length) {
3780 my $msg_type = "LONG_LINE";
3782 # Check the allowed long line types first
3784 # logging functions that end in a string that starts
3785 # before $max_line_length
3786 if ($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(?:KERN_\S+\s*|[^"]*))?($String\s*(?:|,|\)\s*;)\s*)$/ &&
3787 length(expand_tabs(substr($line, 1, length($line) - length($1) - 1))) <= $max_line_length) {
3790 # lines with only strings (w/ possible termination)
3791 # #defines with only strings
3792 } elsif ($line =~ /^\+\s*$String\s*(?:\s*|,|\)\s*;)\s*$/ ||
3793 $line =~ /^\+\s*#\s*define\s+\w+\s+$String$/) {
3796 # More special cases
3797 } elsif ($line =~ /^\+.*\bEFI_GUID\s*\(/ ||
3798 $line =~ /^\+\s*(?:\w+)?\s*DEFINE_PER_CPU/) {
3801 # URL ($rawline is used in case the URL is in a comment)
3802 } elsif ($rawline =~ /^\+.*\b[a-z][\w\.\+\-]*:\/\/\S+/i) {
3805 # Otherwise set the alternate message types
3807 # a comment starts before $max_line_length
3808 } elsif ($line =~ /($;[\s$;]*)$/ &&
3809 length(expand_tabs(substr($line, 1, length($line) - length($1) - 1))) <= $max_line_length) {
3810 $msg_type = "LONG_LINE_COMMENT"
3812 # a quoted string starts before $max_line_length
3813 } elsif ($sline =~ /\s*($String(?:\s*(?:\\|,\s*|\)\s*;\s*))?)$/ &&
3814 length(expand_tabs(substr($line, 1, length($line) - length($1) - 1))) <= $max_line_length) {
3815 $msg_type = "LONG_LINE_STRING"
3818 if ($msg_type ne "" &&
3819 (show_type("LONG_LINE") || show_type($msg_type))) {
3820 my $msg_level = \&WARN;
3821 $msg_level = \&CHK if ($file);
3822 &{$msg_level}($msg_type,
3823 "line length of $length exceeds $max_line_length columns\n" . $herecurr);
3827 # check for adding lines without a newline.
3828 if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
3829 if (WARN("MISSING_EOF_NEWLINE",
3830 "adding a line without newline at end of file\n" . $herecurr) &&
3832 fix_delete_line($fixlinenr+1, "No newline at end of file");
3836 # check for .L prefix local symbols in .S files
3837 if ($realfile =~ /\.S$/ &&
3838 $line =~ /^\+\s*(?:[A-Z]+_)?SYM_[A-Z]+_(?:START|END)(?:_[A-Z_]+)?\s*\(\s*\.L/) {
3839 WARN("AVOID_L_PREFIX",
3840 "Avoid using '.L' prefixed local symbol names for denoting a range of code via 'SYM_*_START/END' annotations; see Documentation/asm-annotations.rst\n" . $herecurr);
3843 # check we are in a valid source file C or perl if not then ignore this hunk
3844 next if ($realfile !~ /\.(h|c|pl|dtsi|dts)$/);
3846 # at the beginning of a line any tabs must come first and anything
3847 # more than $tabsize must use tabs.
3848 if ($rawline =~ /^\+\s* \t\s*\S/ ||
3849 $rawline =~ /^\+\s* \s*/) {
3850 my $herevet = "$here\n" . cat_vet($rawline) . "\n";
3852 if (ERROR("CODE_INDENT",
3853 "code indent should use tabs where possible\n" . $herevet) &&
3855 $fixed[$fixlinenr] =~ s/^\+([ \t]+)/"\+" . tabify($1)/e;
3859 # check for space before tabs.
3860 if ($rawline =~ /^\+/ && $rawline =~ / \t/) {
3861 my $herevet = "$here\n" . cat_vet($rawline) . "\n";
3862 if (WARN("SPACE_BEFORE_TAB",
3863 "please, no space before tabs\n" . $herevet) &&
3865 while ($fixed[$fixlinenr] =~
3866 s/(^\+.*) {$tabsize,$tabsize}\t/$1\t\t/) {}
3867 while ($fixed[$fixlinenr] =~
3868 s/(^\+.*) +\t/$1\t/) {}
3872 # check for assignments on the start of a line
3873 if ($sline =~ /^\+\s+($Assignment)[^=]/) {
3875 if (CHK("ASSIGNMENT_CONTINUATIONS",
3876 "Assignment operator '$1' should be on the previous line\n" . $hereprev) &&
3877 $fix && $prevrawline =~ /^\+/) {
3878 # add assignment operator to the previous line, remove from current line
3879 $fixed[$fixlinenr - 1] .= " $operator";
3880 $fixed[$fixlinenr] =~ s/\Q$operator\E\s*//;
3884 # check for && or || at the start of a line
3885 if ($rawline =~ /^\+\s*(&&|\|\|)/) {
3887 if (CHK("LOGICAL_CONTINUATIONS",
3888 "Logical continuations should be on the previous line\n" . $hereprev) &&
3889 $fix && $prevrawline =~ /^\+/) {
3890 # insert logical operator at last non-comment, non-whitepsace char on previous line
3891 $prevline =~ /[\s$;]*$/;
3892 my $line_end = substr($prevrawline, $-[0]);
3893 $fixed[$fixlinenr - 1] =~ s/\Q$line_end\E$/ $operator$line_end/;
3894 $fixed[$fixlinenr] =~ s/\Q$operator\E\s*//;
3898 # check indentation starts on a tab stop
3899 if ($perl_version_ok &&
3900 $sline =~ /^\+\t+( +)(?:$c90_Keywords\b|\{\s*$|\}\s*(?:else\b|while\b|\s*$)|$Declare\s*$Ident\s*[;=])/) {
3901 my $indent = length($1);
3902 if ($indent % $tabsize) {
3904 "Statements should start on a tabstop\n" . $herecurr) &&
3906 $fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . "\t" x ($indent/$tabsize)@e;
3911 # check multi-line statement indentation matches previous line
3912 if ($perl_version_ok &&
3913 $prevline =~ /^\+([ \t]*)((?:$c90_Keywords(?:\s+if)\s*)|(?:$Declare\s*)?(?:$Ident|\(\s*\*\s*$Ident\s*\))\s*|(?:\*\s*)*$Lval\s*=\s*$Ident\s*)\(.*(\&\&|\|\||,)\s*$/) {
3914 $prevline =~ /^\+(\t*)(.*)$/;
3918 my $pos = pos_last_openparen($rest);
3920 $line =~ /^(\+| )([ \t]*)/;
3923 my $goodtabindent = $oldindent .
3924 "\t" x ($pos / $tabsize) .
3925 " " x ($pos % $tabsize);
3926 my $goodspaceindent = $oldindent . " " x $pos;
3928 if ($newindent ne $goodtabindent &&
3929 $newindent ne $goodspaceindent) {
3931 if (CHK("PARENTHESIS_ALIGNMENT",
3932 "Alignment should match open parenthesis\n" . $hereprev) &&
3933 $fix && $line =~ /^\+/) {
3934 $fixed[$fixlinenr] =~
3935 s/^\+[ \t]*/\+$goodtabindent/;
3941 # check for space after cast like "(int) foo" or "(struct foo) bar"
3942 # avoid checking a few false positives:
3943 # "sizeof(<type>)" or "__alignof__(<type>)"
3944 # function pointer declarations like "(*foo)(int) = bar;"
3945 # structure definitions like "(struct foo) { 0 };"
3946 # multiline macros that define functions
3947 # known attributes or the __attribute__ keyword
3948 if ($line =~ /^\+(.*)\(\s*$Type\s*\)([ \t]++)((?![={]|\\$|$Attribute|__attribute__))/ &&
3949 (!defined($1) || $1 !~ /\b(?:sizeof|__alignof__)\s*$/)) {
3951 "No space is necessary after a cast\n" . $herecurr) &&
3953 $fixed[$fixlinenr] =~
3954 s/(\(\s*$Type\s*\))[ \t]+/$1/;
3958 # Block comment styles
3959 # Networking with an initial /*
3960 if ($realfile =~ m@^(drivers/net/|net/)@ &&
3961 $prevrawline =~ /^\+[ \t]*\/\*[ \t]*$/ &&
3962 $rawline =~ /^\+[ \t]*\*/ &&
3963 $realline > 3) { # Do not warn about the initial copyright comment block after SPDX-License-Identifier
3964 WARN("NETWORKING_BLOCK_COMMENT_STYLE",
3965 "networking block comments don't use an empty /* line, use /* Comment...\n" . $hereprev);
3968 # Block comments use * on subsequent lines
3969 if ($prevline =~ /$;[ \t]*$/ && #ends in comment
3970 $prevrawline =~ /^\+.*?\/\*/ && #starting /*
3971 $prevrawline !~ /\*\/[ \t]*$/ && #no trailing */
3972 $rawline =~ /^\+/ && #line is new
3973 $rawline !~ /^\+[ \t]*\*/) { #no leading *
3974 WARN("BLOCK_COMMENT_STYLE",
3975 "Block comments use * on subsequent lines\n" . $hereprev);
3978 # Block comments use */ on trailing lines
3979 if ($rawline !~ m@^\+[ \t]*\*/[ \t]*$@ && #trailing */
3980 $rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ && #inline /*...*/
3981 $rawline !~ m@^\+.*\*{2,}/[ \t]*$@ && #trailing **/
3982 $rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) { #non blank */
3983 WARN("BLOCK_COMMENT_STYLE",
3984 "Block comments use a trailing */ on a separate line\n" . $herecurr);
3987 # Block comment * alignment
3988 if ($prevline =~ /$;[ \t]*$/ && #ends in comment
3989 $line =~ /^\+[ \t]*$;/ && #leading comment
3990 $rawline =~ /^\+[ \t]*\*/ && #leading *
3991 (($prevrawline =~ /^\+.*?\/\*/ && #leading /*
3992 $prevrawline !~ /\*\/[ \t]*$/) || #no trailing */
3993 $prevrawline =~ /^\+[ \t]*\*/)) { #leading *
3995 $prevrawline =~ m@^\+([ \t]*/?)\*@;
3997 $oldindent = expand_tabs($1);
3999 $prevrawline =~ m@^\+(.*/?)\*@;
4000 $oldindent = expand_tabs($1);
4002 $rawline =~ m@^\+([ \t]*)\*@;
4004 $newindent = expand_tabs($newindent);
4005 if (length($oldindent) ne length($newindent)) {
4006 WARN("BLOCK_COMMENT_STYLE",
4007 "Block comments should align the * on each line\n" . $hereprev);
4011 # check for missing blank lines after struct/union declarations
4012 # with exceptions for various attributes and macros
4013 if ($prevline =~ /^[\+ ]};?\s*$/ &&
4015 !($line =~ /^\+\s*$/ ||
4016 $line =~ /^\+\s*(?:EXPORT_SYMBOL|early_param)/ ||
4017 $line =~ /^\+\s*MODULE_/i ||
4018 $line =~ /^\+\s*\#\s*(?:end|elif|else)/ ||
4019 $line =~ /^\+[a-z_]*init/ ||
4020 $line =~ /^\+\s*(?:static\s+)?[A-Z_]*ATTR/ ||
4021 $line =~ /^\+\s*DECLARE/ ||
4022 $line =~ /^\+\s*builtin_[\w_]*driver/ ||
4023 $line =~ /^\+\s*__setup/)) {
4024 if (CHK("LINE_SPACING",
4025 "Please use a blank line after function/struct/union/enum declarations\n" . $hereprev) &&
4027 fix_insert_line($fixlinenr, "\+");
4031 # check for multiple consecutive blank lines
4032 if ($prevline =~ /^[\+ ]\s*$/ &&
4033 $line =~ /^\+\s*$/ &&
4034 $last_blank_line != ($linenr - 1)) {
4035 if (CHK("LINE_SPACING",
4036 "Please don't use multiple blank lines\n" . $hereprev) &&
4038 fix_delete_line($fixlinenr, $rawline);
4041 $last_blank_line = $linenr;
4044 # check for missing blank lines after declarations
4045 # (declarations must have the same indentation and not be at the start of line)
4046 if (($prevline =~ /\+(\s+)\S/) && $sline =~ /^\+$1\S/) {
4050 # remove $Attribute/$Sparse uses to simplify comparisons
4051 $sl =~ s/\b(?:$Attribute|$Sparse)\b//g;
4052 $pl =~ s/\b(?:$Attribute|$Sparse)\b//g;
4053 if (($pl =~ /^\+\s+$Declare\s*$Ident\s*[=,;:\[]/ ||
4054 # function pointer declarations
4055 $pl =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident\s*\)\s*[=,;:\[\(]/ ||
4056 # foo bar; where foo is some local typedef or #define
4057 $pl =~ /^\+\s+$Ident(?:\s+|\s*\*\s*)$Ident\s*[=,;\[]/ ||
4058 # known declaration macros
4059 $pl =~ /^\+\s+$declaration_macros/) &&
4060 # for "else if" which can look like "$Ident $Ident"
4061 !($pl =~ /^\+\s+$c90_Keywords\b/ ||
4062 # other possible extensions of declaration lines
4063 $pl =~ /(?:$Compare|$Assignment|$Operators)\s*$/ ||
4064 # not starting a section or a macro "\" extended line
4065 $pl =~ /(?:\{\s*|\\)$/) &&
4066 # looks like a declaration
4067 !($sl =~ /^\+\s+$Declare\s*$Ident\s*[=,;:\[]/ ||
4068 # function pointer declarations
4069 $sl =~ /^\+\s+$Declare\s*\(\s*\*\s*$Ident\s*\)\s*[=,;:\[\(]/ ||
4070 # foo bar; where foo is some local typedef or #define
4071 $sl =~ /^\+\s+$Ident(?:\s+|\s*\*\s*)$Ident\s*[=,;\[]/ ||
4072 # known declaration macros
4073 $sl =~ /^\+\s+$declaration_macros/ ||
4074 # start of struct or union or enum
4075 $sl =~ /^\+\s+(?:static\s+)?(?:const\s+)?(?:union|struct|enum|typedef)\b/ ||
4076 # start or end of block or continuation of declaration
4077 $sl =~ /^\+\s+(?:$|[\{\}\.\#\"\?\:\(\[])/ ||
4078 # bitfield continuation
4079 $sl =~ /^\+\s+$Ident\s*:\s*\d+\s*[,;]/ ||
4080 # other possible extensions of declaration lines
4081 $sl =~ /^\+\s+\(?\s*(?:$Compare|$Assignment|$Operators)/)) {
4082 if (WARN("LINE_SPACING",
4083 "Missing a blank line after declarations\n" . $hereprev) &&
4085 fix_insert_line($fixlinenr, "\+");
4090 # check for spaces at the beginning of a line.
4092 # 1) within comments
4093 # 2) indented preprocessor commands
4095 if ($rawline =~ /^\+ / && $line !~ /^\+ *(?:$;|#|$Ident:)/) {
4096 my $herevet = "$here\n" . cat_vet($rawline) . "\n";
4097 if (WARN("LEADING_SPACE",
4098 "please, no spaces at the start of a line\n" . $herevet) &&
4100 $fixed[$fixlinenr] =~ s/^\+([ \t]+)/"\+" . tabify($1)/e;
4104 # check we are in a valid C source file if not then ignore this hunk
4105 next if ($realfile !~ /\.(h|c)$/);
4107 # check for unusual line ending [ or (
4108 if ($line =~ /^\+.*([\[\(])\s*$/) {
4109 CHK("OPEN_ENDED_LINE",
4110 "Lines should not end with a '$1'\n" . $herecurr);
4113 # check if this appears to be the start function declaration, save the name
4114 if ($sline =~ /^\+\{\s*$/ &&
4115 $prevline =~ /^\+(?:(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*)?($Ident)\(/) {
4116 $context_function = $1;
4119 # check if this appears to be the end of function declaration
4120 if ($sline =~ /^\+\}\s*$/) {
4121 undef $context_function;
4124 # check indentation of any line with a bare else
4125 # (but not if it is a multiple line "if (foo) return bar; else return baz;")
4126 # if the previous line is a break or return and is indented 1 tab more...
4127 if ($sline =~ /^\+([\t]+)(?:}[ \t]*)?else(?:[ \t]*{)?\s*$/) {
4128 my $tabs = length($1) + 1;
4129 if ($prevline =~ /^\+\t{$tabs,$tabs}break\b/ ||
4130 ($prevline =~ /^\+\t{$tabs,$tabs}return\b/ &&
4131 defined $lines[$linenr] &&
4132 $lines[$linenr] !~ /^[ \+]\t{$tabs,$tabs}return/)) {
4133 WARN("UNNECESSARY_ELSE",
4134 "else is not generally useful after a break or return\n" . $hereprev);
4138 # check indentation of a line with a break;
4139 # if the previous line is a goto, return or break
4140 # and is indented the same # of tabs
4141 if ($sline =~ /^\+([\t]+)break\s*;\s*$/) {
4143 if ($prevline =~ /^\+$tabs(goto|return|break)\b/) {
4144 if (WARN("UNNECESSARY_BREAK",
4145 "break is not useful after a $1\n" . $hereprev) &&
4147 fix_delete_line($fixlinenr, $rawline);
4152 # check for RCS/CVS revision markers
4153 if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) {
4155 "CVS style keyword markers, these will _not_ be updated\n". $herecurr);
4158 # check for old HOTPLUG __dev<foo> section markings
4159 if ($line =~ /\b(__dev(init|exit)(data|const|))\b/) {
4160 WARN("HOTPLUG_SECTION",
4161 "Using $1 is unnecessary\n" . $herecurr);
4164 # Check for potential 'bare' types
4165 my ($stat, $cond, $line_nr_next, $remain_next, $off_next,
4167 #print "LINE<$line>\n";
4168 if ($linenr > $suppress_statement &&
4169 $realcnt && $sline =~ /.\s*\S/) {
4170 ($stat, $cond, $line_nr_next, $remain_next, $off_next) =
4171 ctx_statement_block($linenr, $realcnt, 0);
4172 $stat =~ s/\n./\n /g;
4173 $cond =~ s/\n./\n /g;
4175 #print "linenr<$linenr> <$stat>\n";
4176 # If this statement has no statement boundaries within
4177 # it there is no point in retrying a statement scan
4178 # until we hit end of it.
4179 my $frag = $stat; $frag =~ s/;+\s*$//;
4180 if ($frag !~ /(?:{|;)/) {
4181 #print "skip<$line_nr_next>\n";
4182 $suppress_statement = $line_nr_next;
4185 # Find the real next line.
4186 $realline_next = $line_nr_next;
4187 if (defined $realline_next &&
4188 (!defined $lines[$realline_next - 1] ||
4189 substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) {
4196 # Ignore goto labels.
4197 if ($s =~ /$Ident:\*$/s) {
4199 # Ignore functions being called
4200 } elsif ($s =~ /^.\s*$Ident\s*\(/s) {
4202 } elsif ($s =~ /^.\s*else\b/s) {
4204 # declarations always start with types
4205 } elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?((?:\s*$Ident)+?)\b(?:\s+$Sparse)?\s*\**\s*(?:$Ident|\(\*[^\)]*\))(?:\s*$Modifier)?\s*(?:;|=|,|\()/s) {
4208 possible($type, "A:" . $s);
4210 # definitions in global scope can only start with types
4211 } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) {
4212 possible($1, "B:" . $s);
4215 # any (foo ... *) is a pointer cast, and foo is a type
4216 while ($s =~ /\(($Ident)(?:\s+$Sparse)*[\s\*]+\s*\)/sg) {
4217 possible($1, "C:" . $s);
4220 # Check for any sort of function declaration.
4221 # int foo(something bar, other baz);
4222 # void (*store_gdt)(x86_descr_ptr *);
4223 if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/s) {
4224 my ($name_len) = length($1);
4227 substr($ctx, 0, $name_len + 1, '');
4228 $ctx =~ s/\)[^\)]*$//;
4230 for my $arg (split(/\s*,\s*/, $ctx)) {
4231 if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/s || $arg =~ /^($Ident)$/s) {
4233 possible($1, "D:" . $s);
4241 # Checks which may be anchored in the context.
4244 # Check for switch () and associated case and default
4245 # statements should be at the same indent.
4246 if ($line=~/\bswitch\s*\(.*\)/) {
4249 my @ctx = ctx_block_outer($linenr, $realcnt);
4251 for my $ctx (@ctx) {
4252 my ($clen, $cindent) = line_stats($ctx);
4253 if ($ctx =~ /^\+\s*(case\s+|default:)/ &&
4254 $indent != $cindent) {
4255 $err .= "$sep$ctx\n";
4262 ERROR("SWITCH_CASE_INDENT_LEVEL",
4263 "switch and case should be at the same indent\n$hereline$err");
4267 # if/while/etc brace do not go on next line, unless defining a do while loop,
4268 # or if that brace on the next line is for something else
4269 if ($line =~ /(.*)\b((?:if|while|for|switch|(?:[a-z_]+|)for_each[a-z_]+)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) {
4270 my $pre_ctx = "$1$2";
4272 my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
4274 # OpenOCD specific: Begin: replace s/6/10/
4275 if ($line =~ /^\+\t{10,}/) {
4276 # OpenOCD specific: End
4277 WARN("DEEP_INDENTATION",
4278 "Too many leading tabs - consider code refactoring\n" . $herecurr);
4281 my $ctx_cnt = $realcnt - $#ctx - 1;
4282 my $ctx = join("\n", @ctx);
4284 my $ctx_ln = $linenr;
4285 my $ctx_skip = $realcnt;
4287 while ($ctx_skip > $ctx_cnt || ($ctx_skip == $ctx_cnt &&
4288 defined $lines[$ctx_ln - 1] &&
4289 $lines[$ctx_ln - 1] =~ /^-/)) {
4290 ##print "SKIP<$ctx_skip> CNT<$ctx_cnt>\n";
4291 $ctx_skip-- if (!defined $lines[$ctx_ln - 1] || $lines[$ctx_ln - 1] !~ /^-/);
4295 #print "realcnt<$realcnt> ctx_cnt<$ctx_cnt>\n";
4296 #print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n";
4298 if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) {
4300 "that open brace { should be on the previous line\n" .
4301 "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
4303 if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ &&
4304 $ctx =~ /\)\s*\;\s*$/ &&
4305 defined $lines[$ctx_ln - 1])
4307 my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]);
4308 if ($nindent > $indent) {
4309 WARN("TRAILING_SEMICOLON",
4310 "trailing semicolon indicates no statements, indent implies otherwise\n" .
4311 "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
4316 # Check relative indent for conditionals and blocks.
4317 if ($line =~ /\b(?:(?:if|while|for|(?:[a-z_]+|)for_each[a-z_]+)\s*\(|(?:do|else)\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
4318 ($stat, $cond, $line_nr_next, $remain_next, $off_next) =
4319 ctx_statement_block($linenr, $realcnt, 0)
4320 if (!defined $stat);
4321 my ($s, $c) = ($stat, $cond);
4323 substr($s, 0, length($c), '');
4325 # remove inline comments
4329 # Find out how long the conditional actually is.
4330 my @newlines = ($c =~ /\n/gs);
4331 my $cond_lines = 1 + $#newlines;
4333 # Make sure we remove the line prefixes as we have
4334 # none on the first line, and are going to readd them
4337 while ($s =~ /\n\s+\\\n/) {
4338 $cond_lines += $s =~ s/\n\s+\\\n/\n/g;
4341 # We want to check the first line inside the block
4342 # starting at the end of the conditional, so remove:
4343 # 1) any blank line termination
4344 # 2) any opening brace { on end of the line
4346 my $continuation = 0;
4348 $s =~ s/^.*\bdo\b//;
4350 if ($s =~ s/^\s*\\//) {
4353 if ($s =~ s/^\s*?\n//) {
4358 # Also ignore a loop construct at the end of a
4359 # preprocessor statement.
4360 if (($prevline =~ /^.\s*#\s*define\s/ ||
4361 $prevline =~ /\\\s*$/) && $continuation == 0) {
4367 while ($cond_ptr != $cond_lines) {
4368 $cond_ptr = $cond_lines;
4370 # If we see an #else/#elif then the code
4372 if ($s =~ /^\s*\#\s*(?:else|elif)/) {
4377 # 1) blank lines, they should be at 0,
4378 # 2) preprocessor lines, and
4380 if ($continuation ||
4382 $s =~ /^\s*#\s*?/ ||
4383 $s =~ /^\s*$Ident\s*:/) {
4384 $continuation = ($s =~ /^.*?\\\n/) ? 1 : 0;
4385 if ($s =~ s/^.*?\n//) {
4391 my (undef, $sindent) = line_stats("+" . $s);
4392 my $stat_real = raw_line($linenr, $cond_lines);
4394 # Check if either of these lines are modified, else
4395 # this is not this patch's fault.
4396 if (!defined($stat_real) ||
4397 $stat !~ /^\+/ && $stat_real !~ /^\+/) {
4400 if (defined($stat_real) && $cond_lines > 1) {
4401 $stat_real = "[...]\n$stat_real";
4404 #print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s> cond_lines<$cond_lines> stat_real<$stat_real> stat<$stat>\n";
4406 if ($check && $s ne '' &&
4407 (($sindent % $tabsize) != 0 ||
4408 ($sindent < $indent) ||
4409 ($sindent == $indent &&
4410 ($s !~ /^\s*(?:\}|\{|else\b)/)) ||
4411 ($sindent > $indent + $tabsize))) {
4412 WARN("SUSPECT_CODE_INDENT",
4413 "suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
4417 # Track the 'values' across context and added lines.
4418 my $opline = $line; $opline =~ s/^./ /;
4419 my ($curr_values, $curr_vars) =
4420 annotate_values($opline . "\n", $prev_values);
4421 $curr_values = $prev_values . $curr_values;
4423 my $outline = $opline; $outline =~ s/\t/ /g;
4424 print "$linenr > .$outline\n";
4425 print "$linenr > $curr_values\n";
4426 print "$linenr > $curr_vars\n";
4428 $prev_values = substr($curr_values, -1);
4430 #ignore lines not being added
4431 next if ($line =~ /^[^\+]/);
4433 # check for self assignments used to avoid compiler warnings
4434 # e.g.: int foo = foo, *bar = NULL;
4435 # struct foo bar = *(&(bar));
4436 if ($line =~ /^\+\s*(?:$Declare)?([A-Za-z_][A-Za-z\d_]*)\s*=/) {
4438 if ($line =~ /^\+\s*(?:$Declare)?$var\s*=\s*(?:$var|\*\s*\(?\s*&\s*\(?\s*$var\s*\)?\s*\)?)\s*[;,]/) {
4439 WARN("SELF_ASSIGNMENT",
4440 "Do not use self-assignments to avoid compiler warnings\n" . $herecurr);
4444 # check for dereferences that span multiple lines
4445 if ($prevline =~ /^\+.*$Lval\s*(?:\.|->)\s*$/ &&
4446 $line =~ /^\+\s*(?!\#\s*(?!define\s+|if))\s*$Lval/) {
4447 $prevline =~ /($Lval\s*(?:\.|->))\s*$/;
4449 $line =~ /^.\s*($Lval)/;
4452 WARN("MULTILINE_DEREFERENCE",
4453 "Avoid multiple line dereference - prefer '$ref'\n" . $hereprev);
4456 # check for declarations of signed or unsigned without int
4457 while ($line =~ m{\b($Declare)\s*(?!char\b|short\b|int\b|long\b)\s*($Ident)?\s*[=,;\[\)\(]}g) {
4460 $var = "" if (!defined $var);
4461 if ($type =~ /^(?:(?:$Storage|$Inline|$Attribute)\s+)*((?:un)?signed)((?:\s*\*)*)\s*$/) {
4465 $pointer = "" if (!defined $pointer);
4467 if (WARN("UNSPECIFIED_INT",
4468 "Prefer '" . trim($sign) . " int" . rtrim($pointer) . "' to bare use of '$sign" . rtrim($pointer) . "'\n" . $herecurr) &&
4470 my $decl = trim($sign) . " int ";
4471 my $comp_pointer = $pointer;
4472 $comp_pointer =~ s/\s//g;
4473 $decl .= $comp_pointer;
4474 $decl = rtrim($decl) if ($var eq "");
4475 $fixed[$fixlinenr] =~ s@\b$sign\s*\Q$pointer\E\s*$var\b@$decl$var@;
4480 # TEST: allow direct testing of the type matcher.
4482 if ($line =~ /^.\s*$Declare\s*$/) {
4484 "TEST: is type\n" . $herecurr);
4485 } elsif ($dbg_type > 1 && $line =~ /^.+($Declare)/) {
4486 ERROR("TEST_NOT_TYPE",
4487 "TEST: is not type ($1 is)\n". $herecurr);
4491 # TEST: allow direct testing of the attribute matcher.
4493 if ($line =~ /^.\s*$Modifier\s*$/) {
4495 "TEST: is attr\n" . $herecurr);
4496 } elsif ($dbg_attr > 1 && $line =~ /^.+($Modifier)/) {
4497 ERROR("TEST_NOT_ATTR",
4498 "TEST: is not attr ($1 is)\n". $herecurr);
4503 # check for initialisation to aggregates open brace on the next line
4504 if ($line =~ /^.\s*{/ &&
4505 $prevline =~ /(?:^|[^=])=\s*$/) {
4506 if (ERROR("OPEN_BRACE",
4507 "that open brace { should be on the previous line\n" . $hereprev) &&
4508 $fix && $prevline =~ /^\+/ && $line =~ /^\+/) {
4509 fix_delete_line($fixlinenr - 1, $prevrawline);
4510 fix_delete_line($fixlinenr, $rawline);
4511 my $fixedline = $prevrawline;
4512 $fixedline =~ s/\s*=\s*$/ = {/;
4513 fix_insert_line($fixlinenr, $fixedline);
4515 $fixedline =~ s/^(.\s*)\{\s*/$1/;
4516 fix_insert_line($fixlinenr, $fixedline);
4521 # Checks which are anchored on the added line.
4524 # check for malformed paths in #include statements (uses RAW line)
4525 if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) {
4527 if ($path =~ m{//}) {
4528 ERROR("MALFORMED_INCLUDE",
4529 "malformed #include filename\n" . $herecurr);
4531 if ($path =~ "^uapi/" && $realfile =~ m@\binclude/uapi/@) {
4532 ERROR("UAPI_INCLUDE",
4533 "No #include in ...include/uapi/... should use a uapi/ path prefix\n" . $herecurr);
4537 # no C99 // comments
4538 if ($line =~ m{//}) {
4539 if (ERROR("C99_COMMENTS",
4540 "do not use C99 // comments\n" . $herecurr) &&
4542 my $line = $fixed[$fixlinenr];
4543 if ($line =~ /\/\/(.*)$/) {
4544 my $comment = trim($1);
4545 $fixed[$fixlinenr] =~ s@\/\/(.*)$@/\* $comment \*/@;
4549 # Remove C99 comments.
4551 $opline =~ s@//.*@@;
4553 # EXPORT_SYMBOL should immediately follow the thing it is exporting, consider
4554 # the whole statement.
4555 #print "APW <$lines[$realline_next - 1]>\n";
4556 if (defined $realline_next &&
4557 exists $lines[$realline_next - 1] &&
4558 !defined $suppress_export{$realline_next} &&
4559 ($lines[$realline_next - 1] =~ /EXPORT_SYMBOL.*\((.*)\)/)) {
4560 # Handle definitions which produce identifiers with
4563 # EXPORT_SYMBOL(something_foo);
4565 $name =~ s/^\s*($Ident).*/$1/;
4566 if ($stat =~ /^(?:.\s*}\s*\n)?.([A-Z_]+)\s*\(\s*($Ident)/ &&
4567 $name =~ /^${Ident}_$2/) {
4568 #print "FOO C name<$name>\n";
4569 $suppress_export{$realline_next} = 1;
4571 } elsif ($stat !~ /(?:
4573 ^.DEFINE_$Ident\(\Q$name\E\)|
4574 ^.DECLARE_$Ident\(\Q$name\E\)|
4575 ^.LIST_HEAD\(\Q$name\E\)|
4576 ^.(?:$Storage\s+)?$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
4577 \b\Q$name\E(?:\s+$Attribute)*\s*(?:;|=|\[|\()
4579 #print "FOO A<$lines[$realline_next - 1]> stat<$stat> name<$name>\n";
4580 $suppress_export{$realline_next} = 2;
4582 $suppress_export{$realline_next} = 1;
4585 if (!defined $suppress_export{$linenr} &&
4586 $prevline =~ /^.\s*$/ &&
4587 ($line =~ /EXPORT_SYMBOL.*\((.*)\)/)) {
4588 #print "FOO B <$lines[$linenr - 1]>\n";
4589 $suppress_export{$linenr} = 2;
4591 if (defined $suppress_export{$linenr} &&
4592 $suppress_export{$linenr} == 2) {
4593 WARN("EXPORT_SYMBOL",
4594 "EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr);
4597 # check for global initialisers.
4598 if ($line =~ /^\+$Type\s*$Ident(?:\s+$Modifier)*\s*=\s*($zero_initializer)\s*;/ &&
4599 !exclude_global_initialisers($realfile)) {
4600 if (ERROR("GLOBAL_INITIALISERS",
4601 "do not initialise globals to $1\n" . $herecurr) &&
4603 $fixed[$fixlinenr] =~ s/(^.$Type\s*$Ident(?:\s+$Modifier)*)\s*=\s*$zero_initializer\s*;/$1;/;
4606 # check for static initialisers.
4607 if ($line =~ /^\+.*\bstatic\s.*=\s*($zero_initializer)\s*;/) {
4608 if (ERROR("INITIALISED_STATIC",
4609 "do not initialise statics to $1\n" .
4612 $fixed[$fixlinenr] =~ s/(\bstatic\s.*?)\s*=\s*$zero_initializer\s*;/$1;/;
4616 # check for misordered declarations of char/short/int/long with signed/unsigned
4617 while ($sline =~ m{(\b$TypeMisordered\b)}g) {
4619 WARN("MISORDERED_TYPE",
4620 "type '$tmp' should be specified in [[un]signed] [short|int|long|long long] order\n" . $herecurr);
4623 # check for unnecessary <signed> int declarations of short/long/long long
4624 while ($sline =~ m{\b($TypeMisordered(\s*\*)*|$C90_int_types)\b}g) {
4625 my $type = trim($1);
4626 next if ($type !~ /\bint\b/);
4627 next if ($type !~ /\b(?:short|long\s+long|long)\b/);
4628 my $new_type = $type;
4629 $new_type =~ s/\b\s*int\s*\b/ /;
4630 $new_type =~ s/\b\s*(?:un)?signed\b\s*/ /;
4631 $new_type =~ s/^const\s+//;
4632 $new_type = "unsigned $new_type" if ($type =~ /\bunsigned\b/);
4633 $new_type = "const $new_type" if ($type =~ /^const\b/);
4634 $new_type =~ s/\s+/ /g;
4635 $new_type = trim($new_type);
4636 if (WARN("UNNECESSARY_INT",
4637 "Prefer '$new_type' over '$type' as the int is unnecessary\n" . $herecurr) &&
4639 $fixed[$fixlinenr] =~ s/\b\Q$type\E\b/$new_type/;
4643 # check for static const char * arrays.
4644 if ($line =~ /\bstatic\s+const\s+char\s*\*\s*(\w+)\s*\[\s*\]\s*=\s*/) {
4645 WARN("STATIC_CONST_CHAR_ARRAY",
4646 "static const char * array should probably be static const char * const\n" .
4650 # check for initialized const char arrays that should be static const
4651 if ($line =~ /^\+\s*const\s+(char|unsigned\s+char|_*u8|(?:[us]_)?int8_t)\s+\w+\s*\[\s*(?:\w+\s*)?\]\s*=\s*"/) {
4652 if (WARN("STATIC_CONST_CHAR_ARRAY",
4653 "const array should probably be static const\n" . $herecurr) &&
4655 $fixed[$fixlinenr] =~ s/(^.\s*)const\b/${1}static const/;
4659 # check for static char foo[] = "bar" declarations.
4660 if ($line =~ /\bstatic\s+char\s+(\w+)\s*\[\s*\]\s*=\s*"/) {
4661 WARN("STATIC_CONST_CHAR_ARRAY",
4662 "static char array declaration should probably be static const char\n" .
4666 # check for const <foo> const where <foo> is not a pointer or array type
4667 if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) {
4669 if ($sline =~ /\bconst\s+\Q$found\E\s+const\b\s*\*/) {
4671 "'const $found const *' should probably be 'const $found * const'\n" . $herecurr);
4672 } elsif ($sline !~ /\bconst\s+\Q$found\E\s+const\s+\w+\s*\[/) {
4674 "'const $found const' should probably be 'const $found'\n" . $herecurr);
4678 # check for const static or static <non ptr type> const declarations
4679 # prefer 'static const <foo>' over 'const static <foo>' and 'static <foo> const'
4680 if ($sline =~ /^\+\s*const\s+static\s+($Type)\b/ ||
4681 $sline =~ /^\+\s*static\s+($BasicType)\s+const\b/) {
4682 if (WARN("STATIC_CONST",
4683 "Move const after static - use 'static const $1'\n" . $herecurr) &&
4685 $fixed[$fixlinenr] =~ s/\bconst\s+static\b/static const/;
4686 $fixed[$fixlinenr] =~ s/\bstatic\s+($BasicType)\s+const\b/static const $1/;
4690 # check for non-global char *foo[] = {"bar", ...} declarations.
4691 if ($line =~ /^.\s+(?:static\s+|const\s+)?char\s+\*\s*\w+\s*\[\s*\]\s*=\s*\{/) {
4692 WARN("STATIC_CONST_CHAR_ARRAY",
4693 "char * array declaration might be better as static const\n" .
4697 # check for sizeof(foo)/sizeof(foo[0]) that could be ARRAY_SIZE(foo)
4698 if ($line =~ m@\bsizeof\s*\(\s*($Lval)\s*\)@) {
4700 if ($line =~ m@\b(sizeof\s*\(\s*\Q$array\E\s*\)\s*/\s*sizeof\s*\(\s*\Q$array\E\s*\[\s*0\s*\]\s*\))@) {
4702 if (WARN("ARRAY_SIZE",
4703 "Prefer ARRAY_SIZE($array)\n" . $herecurr) &&
4705 $fixed[$fixlinenr] =~ s/\Q$array_div\E/ARRAY_SIZE($array)/;
4710 # check for function declarations without arguments like "int foo()"
4711 if ($line =~ /(\b$Type\s*$Ident)\s*\(\s*\)/) {
4712 if (ERROR("FUNCTION_WITHOUT_ARGS",
4713 "Bad function definition - $1() should probably be $1(void)\n" . $herecurr) &&
4715 $fixed[$fixlinenr] =~ s/(\b($Type)\s+($Ident))\s*\(\s*\)/$2 $3(void)/;
4719 # check for new typedefs, only function parameters and sparse annotations
4721 if ($line =~ /\btypedef\s/ &&
4722 $line !~ /\btypedef\s+$Type\s*\(\s*\*?$Ident\s*\)\s*\(/ &&
4723 $line !~ /\btypedef\s+$Type\s+$Ident\s*\(/ &&
4724 $line !~ /\b$typeTypedefs\b/ &&
4725 $line !~ /\b__bitwise\b/) {
4726 WARN("NEW_TYPEDEFS",
4727 "do not add new typedefs\n" . $herecurr);
4730 # * goes on variable not on type
4732 while ($line =~ m{(\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\))}g) {
4734 my ($ident, $from, $to) = ($1, $2, $2);
4736 # Should start with a space.
4737 $to =~ s/^(\S)/ $1/;
4738 # Should not end with a space.
4740 # '*'s should not have spaces between.
4741 while ($to =~ s/\*\s+\*/\*\*/) {
4744 ## print "1: from<$from> to<$to> ident<$ident>\n";
4746 if (ERROR("POINTER_LOCATION",
4747 "\"(foo$from)\" should be \"(foo$to)\"\n" . $herecurr) &&
4749 my $sub_from = $ident;
4750 my $sub_to = $ident;
4751 $sub_to =~ s/\Q$from\E/$to/;
4752 $fixed[$fixlinenr] =~
4753 s@\Q$sub_from\E@$sub_to@;
4757 while ($line =~ m{(\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident))}g) {
4759 my ($match, $from, $to, $ident) = ($1, $2, $2, $3);
4761 # Should start with a space.
4762 $to =~ s/^(\S)/ $1/;
4763 # Should not end with a space.
4765 # '*'s should not have spaces between.
4766 while ($to =~ s/\*\s+\*/\*\*/) {
4768 # Modifiers should have spaces.
4769 $to =~ s/(\b$Modifier$)/$1 /;
4771 ## print "2: from<$from> to<$to> ident<$ident>\n";
4772 if ($from ne $to && $ident !~ /^$Modifier$/) {
4773 if (ERROR("POINTER_LOCATION",
4774 "\"foo${from}bar\" should be \"foo${to}bar\"\n" . $herecurr) &&
4777 my $sub_from = $match;
4778 my $sub_to = $match;
4779 $sub_to =~ s/\Q$from\E/$to/;
4780 $fixed[$fixlinenr] =~
4781 s@\Q$sub_from\E@$sub_to@;
4786 # avoid BUG() or BUG_ON()
4787 if ($line =~ /\b(?:BUG|BUG_ON)\b/) {
4788 my $msg_level = \&WARN;
4789 $msg_level = \&CHK if ($file);
4790 &{$msg_level}("AVOID_BUG",
4791 "Avoid crashing the kernel - try using WARN_ON & recovery code rather than BUG() or BUG_ON()\n" . $herecurr);
4794 # avoid LINUX_VERSION_CODE
4795 if ($line =~ /\bLINUX_VERSION_CODE\b/) {
4796 WARN("LINUX_VERSION_CODE",
4797 "LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);
4800 # check for uses of printk_ratelimit
4801 if ($line =~ /\bprintk_ratelimit\s*\(/) {
4802 WARN("PRINTK_RATELIMITED",
4803 "Prefer printk_ratelimited or pr_<level>_ratelimited to printk_ratelimit\n" . $herecurr);
4806 # printk should use KERN_* levels
4807 if ($line =~ /\bprintk\s*\(\s*(?!KERN_[A-Z]+\b)/) {
4808 WARN("PRINTK_WITHOUT_KERN_LEVEL",
4809 "printk() should include KERN_<LEVEL> facility level\n" . $herecurr);
4812 # prefer variants of (subsystem|netdev|dev|pr)_<level> to printk(KERN_<LEVEL>
4813 if ($line =~ /\b(printk(_once|_ratelimited)?)\s*\(\s*KERN_([A-Z]+)/) {
4817 $modifier = "" if (!defined($modifier));
4818 my $level = lc($orig);
4819 $level = "warn" if ($level eq "warning");
4820 my $level2 = $level;
4821 $level2 = "dbg" if ($level eq "debug");
4822 $level .= $modifier;
4823 $level2 .= $modifier;
4824 WARN("PREFER_PR_LEVEL",
4825 "Prefer [subsystem eg: netdev]_$level2([subsystem]dev, ... then dev_$level2(dev, ... then pr_$level(... to $printk(KERN_$orig ...\n" . $herecurr);
4828 # prefer dev_<level> to dev_printk(KERN_<LEVEL>
4829 if ($line =~ /\bdev_printk\s*\(\s*KERN_([A-Z]+)/) {
4831 my $level = lc($orig);
4832 $level = "warn" if ($level eq "warning");
4833 $level = "dbg" if ($level eq "debug");
4834 WARN("PREFER_DEV_LEVEL",
4835 "Prefer dev_$level(... to dev_printk(KERN_$orig, ...\n" . $herecurr);
4838 # trace_printk should not be used in production code.
4839 if ($line =~ /\b(trace_printk|trace_puts|ftrace_vprintk)\s*\(/) {
4840 WARN("TRACE_PRINTK",
4841 "Do not use $1() in production code (this can be ignored if built only with a debug config option)\n" . $herecurr);
4844 # ENOSYS means "bad syscall nr" and nothing else. This will have a small
4845 # number of false positives, but assembly files are not checked, so at
4846 # least the arch entry code will not trigger this warning.
4847 if ($line =~ /\bENOSYS\b/) {
4849 "ENOSYS means 'invalid syscall nr' and nothing else\n" . $herecurr);
4852 # ENOTSUPP is not a standard error code and should be avoided in new patches.
4853 # Folks usually mean EOPNOTSUPP (also called ENOTSUP), when they type ENOTSUPP.
4854 # Similarly to ENOSYS warning a small number of false positives is expected.
4855 if (!$file && $line =~ /\bENOTSUPP\b/) {
4856 if (WARN("ENOTSUPP",
4857 "ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP\n" . $herecurr) &&
4859 $fixed[$fixlinenr] =~ s/\bENOTSUPP\b/EOPNOTSUPP/;
4863 # function brace can't be on same line, except for #defines of do while,
4864 # or if closed on same line
4865 if ($perl_version_ok &&
4866 $sline =~ /$Type\s*$Ident\s*$balanced_parens\s*\{/ &&
4867 $sline !~ /\#\s*define\b.*do\s*\{/ &&
4869 if (ERROR("OPEN_BRACE",
4870 "open brace '{' following function definitions go on the next line\n" . $herecurr) &&
4872 fix_delete_line($fixlinenr, $rawline);
4873 my $fixed_line = $rawline;
4874 $fixed_line =~ /(^..*$Type\s*$Ident\(.*\)\s*)\{(.*)$/;
4877 fix_insert_line($fixlinenr, ltrim($line1));
4878 fix_insert_line($fixlinenr, "\+{");
4879 if ($line2 !~ /^\s*$/) {
4880 fix_insert_line($fixlinenr, "\+\t" . trim($line2));
4885 # open braces for enum, union and struct go on the same line.
4886 if ($line =~ /^.\s*{/ &&
4887 $prevline =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?\s*$/) {
4888 if (ERROR("OPEN_BRACE",
4889 "open brace '{' following $1 go on the same line\n" . $hereprev) &&
4890 $fix && $prevline =~ /^\+/ && $line =~ /^\+/) {
4891 fix_delete_line($fixlinenr - 1, $prevrawline);
4892 fix_delete_line($fixlinenr, $rawline);
4893 my $fixedline = rtrim($prevrawline) . " {";
4894 fix_insert_line($fixlinenr, $fixedline);
4895 $fixedline = $rawline;
4896 $fixedline =~ s/^(.\s*)\{\s*/$1\t/;
4897 if ($fixedline !~ /^\+\s*$/) {
4898 fix_insert_line($fixlinenr, $fixedline);
4903 # missing space after union, struct or enum definition
4904 if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident){1,2}[=\{]/) {
4906 "missing space after $1 definition\n" . $herecurr) &&
4908 $fixed[$fixlinenr] =~
4909 s/^(.\s*(?:typedef\s+)?(?:enum|union|struct)(?:\s+$Ident){1,2})([=\{])/$1 $2/;
4913 # Function pointer declarations
4914 # check spacing between type, funcptr, and args
4915 # canonical declaration is "type (*funcptr)(args...)"
4916 if ($line =~ /^.\s*($Declare)\((\s*)\*(\s*)($Ident)(\s*)\)(\s*)\(/) {
4918 my $pre_pointer_space = $2;
4919 my $post_pointer_space = $3;
4921 my $post_funcname_space = $5;
4922 my $pre_args_space = $6;
4924 # the $Declare variable will capture all spaces after the type
4925 # so check it for a missing trailing missing space but pointer return types
4926 # don't need a space so don't warn for those.
4927 my $post_declare_space = "";
4928 if ($declare =~ /(\s+)$/) {
4929 $post_declare_space = $1;
4930 $declare = rtrim($declare);
4932 if ($declare !~ /\*$/ && $post_declare_space =~ /^$/) {
4934 "missing space after return type\n" . $herecurr);
4935 $post_declare_space = " ";
4938 # unnecessary space "type (*funcptr)(args...)"
4939 # This test is not currently implemented because these declarations are
4941 # int foo(int bar, ...)
4942 # and this is form shouldn't/doesn't generate a checkpatch warning.
4944 # elsif ($declare =~ /\s{2,}$/) {
4946 # "Multiple spaces after return type\n" . $herecurr);
4949 # unnecessary space "type ( *funcptr)(args...)"
4950 if (defined $pre_pointer_space &&
4951 $pre_pointer_space =~ /^\s/) {
4953 "Unnecessary space after function pointer open parenthesis\n" . $herecurr);
4956 # unnecessary space "type (* funcptr)(args...)"
4957 if (defined $post_pointer_space &&
4958 $post_pointer_space =~ /^\s/) {
4960 "Unnecessary space before function pointer name\n" . $herecurr);
4963 # unnecessary space "type (*funcptr )(args...)"
4964 if (defined $post_funcname_space &&
4965 $post_funcname_space =~ /^\s/) {
4967 "Unnecessary space after function pointer name\n" . $herecurr);
4970 # unnecessary space "type (*funcptr) (args...)"
4971 if (defined $pre_args_space &&
4972 $pre_args_space =~ /^\s/) {
4974 "Unnecessary space before function pointer arguments\n" . $herecurr);
4977 if (show_type("SPACING") && $fix) {
4978 $fixed[$fixlinenr] =~
4979 s/^(.\s*)$Declare\s*\(\s*\*\s*$Ident\s*\)\s*\(/$1 . $declare . $post_declare_space . '(*' . $funcname . ')('/ex;
4983 # check for spacing round square brackets; allowed:
4984 # 1. with a type on the left -- int [] a;
4985 # 2. at the beginning of a line for slice initialisers -- [0...10] = 5,
4986 # 3. inside a curly brace -- = { [0...10] = 5 }
4987 while ($line =~ /(.*?\s)\[/g) {
4988 my ($where, $prefix) = ($-[1], $1);
4989 if ($prefix !~ /$Type\s+$/ &&
4990 ($where != 0 || $prefix !~ /^.\s+$/) &&
4991 $prefix !~ /[{,:]\s+$/) {
4992 if (ERROR("BRACKET_SPACE",
4993 "space prohibited before open square bracket '['\n" . $herecurr) &&
4995 $fixed[$fixlinenr] =~
4996 s/^(\+.*?)\s+\[/$1\[/;
5001 # check for spaces between functions and their parentheses.
5002 while ($line =~ /($Ident)\s+\(/g) {
5004 my $ctx_before = substr($line, 0, $-[1]);
5005 my $ctx = "$ctx_before$name";
5007 # Ignore those directives where spaces _are_ permitted.
5009 if|for|while|switch|return|case|
5010 volatile|__volatile__|
5011 __attribute__|format|__extension__|
5014 # cpp #define statements have non-optional spaces, ie
5015 # if there is a space between the name and the open
5016 # parenthesis it is simply not a parameter group.
5017 } elsif ($ctx_before =~ /^.\s*\#\s*define\s*$/) {
5019 # cpp #elif statement condition may start with a (
5020 } elsif ($ctx =~ /^.\s*\#\s*elif\s*$/) {
5022 # If this whole things ends with a type its most
5023 # likely a typedef for a function.
5024 } elsif ($ctx =~ /$Type$/) {
5028 "space prohibited between function name and open parenthesis '('\n" . $herecurr) &&
5030 $fixed[$fixlinenr] =~
5031 s/\b$name\s+\(/$name\(/;
5036 # Check operator spacing.
5037 if (!($line=~/\#\s*include/)) {
5038 my $fixed_line = "";
5042 <<=|>>=|<=|>=|==|!=|
5043 \+=|-=|\*=|\/=|%=|\^=|\|=|&=|
5044 =>|->|<<|>>|<|>|=|!|~|
5045 &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%|
5048 my @elements = split(/($ops|;)/, $opline);
5050 ## print("element count: <" . $#elements . ">\n");
5051 ## foreach my $el (@elements) {
5052 ## print("el: <$el>\n");
5055 my @fix_elements = ();
5058 foreach my $el (@elements) {
5059 push(@fix_elements, substr($rawline, $off, length($el)));
5060 $off += length($el);
5065 my $blank = copy_spacing($opline);
5066 my $last_after = -1;
5068 for (my $n = 0; $n < $#elements; $n += 2) {
5070 my $good = $fix_elements[$n] . $fix_elements[$n + 1];
5072 ## print("n: <$n> good: <$good>\n");
5074 $off += length($elements[$n]);
5076 # Pick up the preceding and succeeding characters.
5077 my $ca = substr($opline, 0, $off);
5079 if (length($opline) >= ($off + length($elements[$n + 1]))) {
5080 $cc = substr($opline, $off + length($elements[$n + 1]));
5082 my $cb = "$ca$;$cc";
5085 $a = 'V' if ($elements[$n] ne '');
5086 $a = 'W' if ($elements[$n] =~ /\s$/);
5087 $a = 'C' if ($elements[$n] =~ /$;$/);
5088 $a = 'B' if ($elements[$n] =~ /(\[|\()$/);
5089 $a = 'O' if ($elements[$n] eq '');
5090 $a = 'E' if ($ca =~ /^\s*$/);
5092 my $op = $elements[$n + 1];
5095 if (defined $elements[$n + 2]) {
5096 $c = 'V' if ($elements[$n + 2] ne '');
5097 $c = 'W' if ($elements[$n + 2] =~ /^\s/);
5098 $c = 'C' if ($elements[$n + 2] =~ /^$;/);
5099 $c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
5100 $c = 'O' if ($elements[$n + 2] eq '');
5101 $c = 'E' if ($elements[$n + 2] =~ /^\s*\\$/);
5106 my $ctx = "${a}x${c}";
5108 my $at = "(ctx:$ctx)";
5110 my $ptr = substr($blank, 0, $off) . "^";
5111 my $hereptr = "$hereline$ptr\n";
5113 # Pull out the value of this operator.
5114 my $op_type = substr($curr_values, $off + 1, 1);
5116 # Get the full operator variant.
5117 my $opv = $op . substr($curr_vars, $off, 1);
5119 # Ignore operators passed as parameters.
5120 if ($op_type ne 'V' &&
5121 $ca =~ /\s$/ && $cc =~ /^\s*[,\)]/) {
5124 # } elsif ($op =~ /^$;+$/) {
5126 # ; should have either the end of line or a space or \ after it
5127 } elsif ($op eq ';') {
5128 if ($ctx !~ /.x[WEBC]/ &&
5129 $cc !~ /^\\/ && $cc !~ /^;/) {
5130 if (ERROR("SPACING",
5131 "space required after that '$op' $at\n" . $hereptr)) {
5132 $good = $fix_elements[$n] . trim($fix_elements[$n + 1]) . " ";
5138 } elsif ($op eq '//') {
5140 # : when part of a bitfield
5141 } elsif ($opv eq ':B') {
5142 # skip the bitfield test for now
5146 } elsif ($op eq '->') {
5147 if ($ctx =~ /Wx.|.xW/) {
5148 if (ERROR("SPACING",
5149 "spaces prohibited around that '$op' $at\n" . $hereptr)) {
5150 $good = rtrim($fix_elements[$n]) . trim($fix_elements[$n + 1]);
5151 if (defined $fix_elements[$n + 2]) {
5152 $fix_elements[$n + 2] =~ s/^\s+//;
5158 # , must not have a space before and must have a space on the right.
5159 } elsif ($op eq ',') {
5160 my $rtrim_before = 0;
5161 my $space_after = 0;
5162 if ($ctx =~ /Wx./) {
5163 if (ERROR("SPACING",
5164 "space prohibited before that '$op' $at\n" . $hereptr)) {
5169 if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/) {
5170 if (ERROR("SPACING",
5171 "space required after that '$op' $at\n" . $hereptr)) {
5177 if ($rtrim_before || $space_after) {
5178 if ($rtrim_before) {
5179 $good = rtrim($fix_elements[$n]) . trim($fix_elements[$n + 1]);
5181 $good = $fix_elements[$n] . trim($fix_elements[$n + 1]);
5188 # '*' as part of a type definition -- reported already.
5189 } elsif ($opv eq '*_') {
5190 #warn "'*' is part of type\n";
5192 # unary operators should have a space before and
5193 # none after. May be left adjacent to another
5194 # unary operator, or a cast
5195 } elsif ($op eq '!' || $op eq '~' ||
5196 $opv eq '*U' || $opv eq '-U' ||
5197 $opv eq '&U' || $opv eq '&&U') {
5198 if ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
5199 if (ERROR("SPACING",
5200 "space required before that '$op' $at\n" . $hereptr)) {
5201 if ($n != $last_after + 2) {
5202 $good = $fix_elements[$n] . " " . ltrim($fix_elements[$n + 1]);
5207 if ($op eq '*' && $cc =~/\s*$Modifier\b/) {
5208 # A unary '*' may be const
5210 } elsif ($ctx =~ /.xW/) {
5211 if (ERROR("SPACING",
5212 "space prohibited after that '$op' $at\n" . $hereptr)) {
5213 $good = $fix_elements[$n] . rtrim($fix_elements[$n + 1]);
5214 if (defined $fix_elements[$n + 2]) {
5215 $fix_elements[$n + 2] =~ s/^\s+//;
5221 # unary ++ and unary -- are allowed no space on one side.
5222 } elsif ($op eq '++' or $op eq '--') {
5223 if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) {
5224 if (ERROR("SPACING",
5225 "space required one side of that '$op' $at\n" . $hereptr)) {
5226 $good = $fix_elements[$n] . trim($fix_elements[$n + 1]) . " ";
5230 if ($ctx =~ /Wx[BE]/ ||
5231 ($ctx =~ /Wx./ && $cc =~ /^;/)) {
5232 if (ERROR("SPACING",
5233 "space prohibited before that '$op' $at\n" . $hereptr)) {
5234 $good = rtrim($fix_elements[$n]) . trim($fix_elements[$n + 1]);
5238 if ($ctx =~ /ExW/) {
5239 if (ERROR("SPACING",
5240 "space prohibited after that '$op' $at\n" . $hereptr)) {
5241 $good = $fix_elements[$n] . trim($fix_elements[$n + 1]);
5242 if (defined $fix_elements[$n + 2]) {
5243 $fix_elements[$n + 2] =~ s/^\s+//;
5249 # << and >> may either have or not have spaces both sides
5250 } elsif ($op eq '<<' or $op eq '>>' or
5251 $op eq '&' or $op eq '^' or $op eq '|' or
5252 $op eq '+' or $op eq '-' or
5253 $op eq '*' or $op eq '/' or
5257 if (defined $fix_elements[$n + 2] && $ctx !~ /[EW]x[EW]/) {
5259 "spaces preferred around that '$op' $at\n" . $hereptr)) {
5260 $good = rtrim($fix_elements[$n]) . " " . trim($fix_elements[$n + 1]) . " ";
5261 $fix_elements[$n + 2] =~ s/^\s+//;
5264 } elsif (!defined $fix_elements[$n + 2] && $ctx !~ /Wx[OE]/) {
5266 "space preferred before that '$op' $at\n" . $hereptr)) {
5267 $good = rtrim($fix_elements[$n]) . " " . trim($fix_elements[$n + 1]);
5271 } elsif ($ctx =~ /Wx[^WCE]|[^WCE]xW/) {
5272 if (ERROR("SPACING",
5273 "need consistent spacing around '$op' $at\n" . $hereptr)) {
5274 $good = rtrim($fix_elements[$n]) . " " . trim($fix_elements[$n + 1]) . " ";
5275 if (defined $fix_elements[$n + 2]) {
5276 $fix_elements[$n + 2] =~ s/^\s+//;
5282 # A colon needs no spaces before when it is
5283 # terminating a case value or a label.
5284 } elsif ($opv eq ':C' || $opv eq ':L') {
5285 if ($ctx =~ /Wx./ and $realfile !~ m@.*\.lds\.h$@) {
5286 if (ERROR("SPACING",
5287 "space prohibited before that '$op' $at\n" . $hereptr)) {
5288 $good = rtrim($fix_elements[$n]) . trim($fix_elements[$n + 1]);
5293 # All the others need spaces both sides.
5294 } elsif ($ctx !~ /[EWC]x[CWE]/) {
5297 # Ignore email addresses <foo@bar>
5299 $cc =~ /^\S+\@\S+>/) ||
5301 $ca =~ /<\S+\@\S+$/))
5306 # for asm volatile statements
5307 # ignore a colon with another
5308 # colon immediately before or after
5310 ($ca =~ /:$/ || $cc =~ /^:/)) {
5314 # messages are ERROR, but ?: are CHK
5316 my $msg_level = \&ERROR;
5317 $msg_level = \&CHK if (($op eq '?:' || $op eq '?' || $op eq ':') && $ctx =~ /VxV/);
5319 if (&{$msg_level}("SPACING",
5320 "spaces required around that '$op' $at\n" . $hereptr)) {
5321 $good = rtrim($fix_elements[$n]) . " " . trim($fix_elements[$n + 1]) . " ";
5322 if (defined $fix_elements[$n + 2]) {
5323 $fix_elements[$n + 2] =~ s/^\s+//;
5329 $off += length($elements[$n + 1]);
5331 ## print("n: <$n> GOOD: <$good>\n");
5333 $fixed_line = $fixed_line . $good;
5336 if (($#elements % 2) == 0) {
5337 $fixed_line = $fixed_line . $fix_elements[$#elements];
5340 if ($fix && $line_fixed && $fixed_line ne $fixed[$fixlinenr]) {
5341 $fixed[$fixlinenr] = $fixed_line;
5347 # check for whitespace before a non-naked semicolon
5348 if ($line =~ /^\+.*\S\s+;\s*$/) {
5350 "space prohibited before semicolon\n" . $herecurr) &&
5352 1 while $fixed[$fixlinenr] =~
5353 s/^(\+.*\S)\s+;/$1;/;
5357 # check for multiple assignments
5358 if ($line =~ /^.\s*$Lval\s*=\s*$Lval\s*=(?!=)/) {
5359 CHK("MULTIPLE_ASSIGNMENTS",
5360 "multiple assignments should be avoided\n" . $herecurr);
5363 ## # check for multiple declarations, allowing for a function declaration
5365 ## if ($line =~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Ident.*/ &&
5366 ## $line !~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Type\s*$Ident.*/) {
5368 ## # Remove any bracketed sections to ensure we do not
5369 ## # falsely report the parameters of functions.
5371 ## while ($ln =~ s/\([^\(\)]*\)//g) {
5373 ## if ($ln =~ /,/) {
5374 ## WARN("MULTIPLE_DECLARATION",
5375 ## "declaring multiple variables together should be avoided\n" . $herecurr);
5379 #need space before brace following if, while, etc
5380 if (($line =~ /\(.*\)\{/ && $line !~ /\($Type\)\{/) ||
5381 $line =~ /\b(?:else|do)\{/) {
5382 if (ERROR("SPACING",
5383 "space required before the open brace '{'\n" . $herecurr) &&
5385 $fixed[$fixlinenr] =~ s/^(\+.*(?:do|else|\)))\{/$1 {/;
5389 ## # check for blank lines before declarations
5390 ## if ($line =~ /^.\t+$Type\s+$Ident(?:\s*=.*)?;/ &&
5391 ## $prevrawline =~ /^.\s*$/) {
5393 ## "No blank lines before declarations\n" . $hereprev);
5397 # closing brace should have a space following it when it has anything
5399 if ($line =~ /}(?!(?:,|;|\)|\}))\S/) {
5400 if (ERROR("SPACING",
5401 "space required after that close brace '}'\n" . $herecurr) &&
5403 $fixed[$fixlinenr] =~
5404 s/}((?!(?:,|;|\)))\S)/} $1/;
5408 # check spacing on square brackets
5409 if ($line =~ /\[\s/ && $line !~ /\[\s*$/) {
5410 if (ERROR("SPACING",
5411 "space prohibited after that open square bracket '['\n" . $herecurr) &&
5413 $fixed[$fixlinenr] =~
5417 if ($line =~ /\s\]/) {
5418 if (ERROR("SPACING",
5419 "space prohibited before that close square bracket ']'\n" . $herecurr) &&
5421 $fixed[$fixlinenr] =~
5426 # check spacing on parentheses
5427 if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ &&
5428 $line !~ /for\s*\(\s+;/) {
5429 if (ERROR("SPACING",
5430 "space prohibited after that open parenthesis '('\n" . $herecurr) &&
5432 $fixed[$fixlinenr] =~
5436 if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ &&
5437 $line !~ /for\s*\(.*;\s+\)/ &&
5438 $line !~ /:\s+\)/) {
5439 if (ERROR("SPACING",
5440 "space prohibited before that close parenthesis ')'\n" . $herecurr) &&
5442 $fixed[$fixlinenr] =~
5447 # check unnecessary parentheses around addressof/dereference single $Lvals
5448 # ie: &(foo->bar) should be &foo->bar and *(foo->bar) should be *foo->bar
5450 while ($line =~ /(?:[^&]&\s*|\*)\(\s*($Ident\s*(?:$Member\s*)+)\s*\)/g) {
5452 if (CHK("UNNECESSARY_PARENTHESES",
5453 "Unnecessary parentheses around $var\n" . $herecurr) &&
5455 $fixed[$fixlinenr] =~ s/\(\s*\Q$var\E\s*\)/$var/;
5459 # check for unnecessary parentheses around function pointer uses
5460 # ie: (foo->bar)(); should be foo->bar();
5461 # but not "if (foo->bar) (" to avoid some false positives
5462 if ($line =~ /(\bif\s*|)(\(\s*$Ident\s*(?:$Member\s*)+\))[ \t]*\(/ && $1 !~ /^if/) {
5464 if (CHK("UNNECESSARY_PARENTHESES",
5465 "Unnecessary parentheses around function pointer $var\n" . $herecurr) &&
5467 my $var2 = deparenthesize($var);
5469 $fixed[$fixlinenr] =~ s/\Q$var\E/$var2/;
5473 # check for unnecessary parentheses around comparisons in if uses
5474 # when !drivers/staging or command-line uses --strict
5475 if (($realfile !~ m@^(?:drivers/staging/)@ || $check_orig) &&
5476 $perl_version_ok && defined($stat) &&
5477 $stat =~ /(^.\s*if\s*($balanced_parens))/) {
5479 my $test = substr($2, 1, -1);
5481 while ($test =~ /(?:^|[^\w\&\!\~])+\s*\(\s*([\&\!\~]?\s*$Lval\s*(?:$Compare\s*$FuncArg)?)\s*\)/g) {
5483 # avoid parentheses around potential macro args
5484 next if ($match =~ /^\s*\w+\s*$/);
5485 if (!defined($herectx)) {
5486 $herectx = $here . "\n";
5487 my $cnt = statement_rawlines($if_stat);
5488 for (my $n = 0; $n < $cnt; $n++) {
5489 my $rl = raw_line($linenr, $n);
5490 $herectx .= $rl . "\n";
5491 last if $rl =~ /^[ \+].*\{/;
5494 CHK("UNNECESSARY_PARENTHESES",
5495 "Unnecessary parentheses around '$match'\n" . $herectx);
5499 # check that goto labels aren't indented (allow a single space indentation)
5500 # and ignore bitfield definitions like foo:1
5501 # Strictly, labels can have whitespace after the identifier and before the :
5502 # but this is not allowed here as many ?: uses would appear to be labels
5503 if ($sline =~ /^.\s+[A-Za-z_][A-Za-z\d_]*:(?!\s*\d+)/ &&
5504 $sline !~ /^. [A-Za-z\d_][A-Za-z\d_]*:/ &&
5505 $sline !~ /^.\s+default:/) {
5506 if (WARN("INDENTED_LABEL",
5507 "labels should not be indented\n" . $herecurr) &&
5509 $fixed[$fixlinenr] =~
5514 # check if a statement with a comma should be two statements like:
5515 # foo = bar(), /* comma should be semicolon */
5517 if (defined($stat) &&
5518 $stat =~ /^\+\s*(?:$Lval\s*$Assignment\s*)?$FuncArg\s*,\s*(?:$Lval\s*$Assignment\s*)?$FuncArg\s*;\s*$/) {
5519 my $cnt = statement_rawlines($stat);
5520 my $herectx = get_stat_here($linenr, $cnt, $here);
5521 WARN("SUSPECT_COMMA_SEMICOLON",
5522 "Possible comma where semicolon could be used\n" . $herectx);
5525 # return is not a function
5526 if (defined($stat) && $stat =~ /^.\s*return(\s*)\(/s) {
5528 if ($perl_version_ok &&
5529 $stat =~ /^.\s*return\s*($balanced_parens)\s*;\s*$/) {
5531 $value = deparenthesize($value);
5532 if ($value =~ m/^\s*$FuncArg\s*(?:\?|$)/) {
5533 ERROR("RETURN_PARENTHESES",
5534 "return is not a function, parentheses are not required\n" . $herecurr);
5536 } elsif ($spacing !~ /\s+/) {
5538 "space required before the open parenthesis '('\n" . $herecurr);
5542 # unnecessary return in a void function
5543 # at end-of-function, with the previous line a single leading tab, then return;
5544 # and the line before that not a goto label target like "out:"
5545 if ($sline =~ /^[ \+]}\s*$/ &&
5546 $prevline =~ /^\+\treturn\s*;\s*$/ &&
5548 $lines[$linenr - 3] =~ /^[ +]/ &&
5549 $lines[$linenr - 3] !~ /^[ +]\s*$Ident\s*:/) {
5551 "void function return statements are not generally useful\n" . $hereprev);
5554 # if statements using unnecessary parentheses - ie: if ((foo == bar))
5555 if ($perl_version_ok &&
5556 $line =~ /\bif\s*((?:\(\s*){2,})/) {
5557 my $openparens = $1;
5558 my $count = $openparens =~ tr@\(@\(@;
5560 if ($line =~ /\bif\s*(?:\(\s*){$count,$count}$LvalOrFunc\s*($Compare)\s*$LvalOrFunc(?:\s*\)){$count,$count}/) {
5561 my $comp = $4; #Not $1 because of $LvalOrFunc
5562 $msg = " - maybe == should be = ?" if ($comp eq "==");
5563 WARN("UNNECESSARY_PARENTHESES",
5564 "Unnecessary parentheses$msg\n" . $herecurr);
5568 # comparisons with a constant or upper case identifier on the left
5569 # avoid cases like "foo + BAR < baz"
5570 # only fix matches surrounded by parentheses to avoid incorrect
5571 # conversions like "FOO < baz() + 5" being "misfixed" to "baz() > FOO + 5"
5572 if ($perl_version_ok &&
5573 $line =~ /^\+(.*)\b($Constant|[A-Z_][A-Z0-9_]*)\s*($Compare)\s*($LvalOrFunc)/) {
5578 my $newcomp = $comp;
5579 if ($lead !~ /(?:$Operators|\.)\s*$/ &&
5580 $to !~ /^(?:Constant|[A-Z_][A-Z0-9_]*)$/ &&
5581 WARN("CONSTANT_COMPARISON",
5582 "Comparisons should place the constant on the right side of the test\n" . $herecurr) &&
5586 } elsif ($comp eq "<=") {
5588 } elsif ($comp eq ">") {
5590 } elsif ($comp eq ">=") {
5593 $fixed[$fixlinenr] =~ s/\(\s*\Q$const\E\s*$Compare\s*\Q$to\E\s*\)/($to $newcomp $const)/;
5597 # Return of what appears to be an errno should normally be negative
5598 if ($sline =~ /\breturn(?:\s*\(+\s*|\s+)(E[A-Z]+)(?:\s*\)+\s*|\s*)[;:,]/) {
5600 if ($name ne 'EOF' && $name ne 'ERROR' && $name !~ /^EPOLL/) {
5601 WARN("USE_NEGATIVE_ERRNO",
5602 "return of an errno should typically be negative (ie: return -$1)\n" . $herecurr);
5606 # Need a space before open parenthesis after if, while etc
5607 if ($line =~ /\b(if|while|for|switch)\(/) {
5608 if (ERROR("SPACING",
5609 "space required before the open parenthesis '('\n" . $herecurr) &&
5611 $fixed[$fixlinenr] =~
5612 s/\b(if|while|for|switch)\(/$1 \(/;
5616 # Check for illegal assignment in if conditional -- and check for trailing
5617 # statements after the conditional.
5618 if ($line =~ /do\s*(?!{)/) {
5619 ($stat, $cond, $line_nr_next, $remain_next, $off_next) =
5620 ctx_statement_block($linenr, $realcnt, 0)
5621 if (!defined $stat);
5622 my ($stat_next) = ctx_statement_block($line_nr_next,
5623 $remain_next, $off_next);
5624 $stat_next =~ s/\n./\n /g;
5625 ##print "stat<$stat> stat_next<$stat_next>\n";
5627 if ($stat_next =~ /^\s*while\b/) {
5628 # If the statement carries leading newlines,
5629 # then count those as offsets.
5631 ($stat_next =~ /^((?:\s*\n[+-])*\s*)/s);
5633 statement_rawlines($whitespace) - 1;
5635 $suppress_whiletrailers{$line_nr_next +
5639 if (!defined $suppress_whiletrailers{$linenr} &&
5640 defined($stat) && defined($cond) &&
5641 $line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
5642 my ($s, $c) = ($stat, $cond);
5643 my $fixed_assign_in_if = 0;
5645 if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) {
5646 if (ERROR("ASSIGN_IN_IF",
5647 "do not use assignment in if condition\n" . $herecurr) &&
5648 $fix && $perl_version_ok) {
5649 if ($rawline =~ /^\+(\s+)if\s*\(\s*(\!)?\s*\(\s*(($Lval)\s*=\s*$LvalOrFunc)\s*\)\s*(?:($Compare)\s*($FuncArg))?\s*\)\s*(\{)?\s*$/) {
5657 fix_delete_line($fixlinenr, $rawline);
5658 fix_insert_line($fixlinenr, "$space$statement;");
5659 my $newline = "${space}if (";
5660 $newline .= '!' if defined($not);
5661 $newline .= '(' if (defined $not && defined($test) && defined($against));
5662 $newline .= "$assigned";
5663 $newline .= " $test $against" if (defined($test) && defined($against));
5664 $newline .= ')' if (defined $not && defined($test) && defined($against));
5666 $newline .= " {" if (defined($brace));
5667 fix_insert_line($fixlinenr + 1, $newline);
5668 $fixed_assign_in_if = 1;
5673 # Find out what is on the end of the line after the
5675 substr($s, 0, length($c), '');
5677 $s =~ s/$;//g; # Remove any comments
5678 if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
5679 $c !~ /}\s*while\s*/)
5681 # Find out how long the conditional actually is.
5682 my @newlines = ($c =~ /\n/gs);
5683 my $cond_lines = 1 + $#newlines;
5686 $stat_real = raw_line($linenr, $cond_lines)
5687 . "\n" if ($cond_lines);
5688 if (defined($stat_real) && $cond_lines > 1) {
5689 $stat_real = "[...]\n$stat_real";
5692 if (ERROR("TRAILING_STATEMENTS",
5693 "trailing statements should be on next line\n" . $herecurr . $stat_real) &&
5694 !$fixed_assign_in_if &&
5696 $fix && $perl_version_ok &&
5697 $fixed[$fixlinenr] =~ /^\+(\s*)((?:if|while|for)\s*$balanced_parens)\s*(.*)$/) {
5700 my $rest = rtrim($4);
5701 if ($rest =~ /;$/) {
5702 $fixed[$fixlinenr] = "\+$indent$test";
5703 fix_insert_line($fixlinenr + 1, "$indent\t$rest");
5709 # Check for bitwise tests written as boolean
5721 WARN("HEXADECIMAL_BOOLEAN_TEST",
5722 "boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr);
5725 # if and else should not have general statements after it
5726 if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) {
5728 $s =~ s/$;//g; # Remove any comments
5729 if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) {
5730 ERROR("TRAILING_STATEMENTS",
5731 "trailing statements should be on next line\n" . $herecurr);
5734 # if should not continue a brace
5735 if ($line =~ /}\s*if\b/) {
5736 ERROR("TRAILING_STATEMENTS",
5737 "trailing statements should be on next line (or did you mean 'else if'?)\n" .
5740 # case and default should not have general statements after them
5741 if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g &&
5743 (?:\s*$;*)(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$|
5747 ERROR("TRAILING_STATEMENTS",
5748 "trailing statements should be on next line\n" . $herecurr);
5751 # Check for }<nl>else {, these must be at the same
5752 # indent level to be relevant to each other.
5753 if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ &&
5754 $previndent == $indent) {
5755 if (ERROR("ELSE_AFTER_BRACE",
5756 "else should follow close brace '}'\n" . $hereprev) &&
5757 $fix && $prevline =~ /^\+/ && $line =~ /^\+/) {
5758 fix_delete_line($fixlinenr - 1, $prevrawline);
5759 fix_delete_line($fixlinenr, $rawline);
5760 my $fixedline = $prevrawline;
5761 $fixedline =~ s/}\s*$//;
5762 if ($fixedline !~ /^\+\s*$/) {
5763 fix_insert_line($fixlinenr, $fixedline);
5765 $fixedline = $rawline;
5766 $fixedline =~ s/^(.\s*)else/$1} else/;
5767 fix_insert_line($fixlinenr, $fixedline);
5771 if ($prevline=~/}\s*$/ and $line=~/^.\s*while\s*/ &&
5772 $previndent == $indent) {
5773 my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
5775 # Find out what is on the end of the line after the
5777 substr($s, 0, length($c), '');
5780 if ($s =~ /^\s*;/) {
5781 if (ERROR("WHILE_AFTER_BRACE",
5782 "while should follow close brace '}'\n" . $hereprev) &&
5783 $fix && $prevline =~ /^\+/ && $line =~ /^\+/) {
5784 fix_delete_line($fixlinenr - 1, $prevrawline);
5785 fix_delete_line($fixlinenr, $rawline);
5786 my $fixedline = $prevrawline;
5787 my $trailing = $rawline;
5788 $trailing =~ s/^\+//;
5789 $trailing = trim($trailing);
5790 $fixedline =~ s/}\s*$/} $trailing/;
5791 fix_insert_line($fixlinenr, $fixedline);
5796 #Specific variable tests
5797 while ($line =~ m{($Constant|$Lval)}g) {
5801 if ($var !~ /^$Constant$/ &&
5802 $var =~ /[A-Z][a-z]|[a-z][A-Z]/ &&
5803 #Ignore some autogenerated defines and enum values
5804 $var !~ /^(?:[A-Z]+_){1,5}[A-Z]{1,3}[a-z]/ &&
5805 #Ignore Page<foo> variants
5806 $var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
5807 #Ignore SI style variants like nS, mV and dB
5808 #(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
5809 $var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
5810 #Ignore some three character SI units explicitly, like MiB and KHz
5811 $var !~ /^(?:[a-z_]*?)_?(?:[KMGT]iB|[KMGT]?Hz)(?:_[a-z_]+)?$/) {
5812 while ($var =~ m{\b($Ident)}g) {
5814 next if ($word !~ /[A-Z][a-z]|[a-z][A-Z]/);
5816 # This will not work for OpenOCD jenkins because it runs
5817 # checkpatch from a tree already patched. Any new camelcase
5818 # in include file will be ignored as it was pre-existing.
5820 seed_camelcase_includes();
5821 if (!$file && !$camelcase_file_seeded) {
5822 seed_camelcase_file($realfile);
5823 $camelcase_file_seeded = 1;
5827 if (!defined $camelcase{$word}) {
5828 $camelcase{$word} = 1;
5830 "Avoid CamelCase: <$word>\n" . $herecurr);
5836 #no spaces allowed after \ in define
5837 if ($line =~ /\#\s*define.*\\\s+$/) {
5838 if (WARN("WHITESPACE_AFTER_LINE_CONTINUATION",
5839 "Whitespace after \\ makes next lines useless\n" . $herecurr) &&
5841 $fixed[$fixlinenr] =~ s/\s+$//;
5845 # warn if <asm/foo.h> is #included and <linux/foo.h> is available and includes
5846 # itself <asm/foo.h> (uses RAW line)
5847 if ($tree && $rawline =~ m{^.\s*\#\s*include\s*\<asm\/(.*)\.h\>}) {
5849 my $checkfile = "include/linux/$file";
5850 if (-f "$root/$checkfile" &&
5851 $realfile ne $checkfile &&
5852 $1 !~ /$allowed_asm_includes/)
5854 my $asminclude = `grep -Ec "#include\\s+<asm/$file>" $root/$checkfile`;
5855 if ($asminclude > 0) {
5856 if ($realfile =~ m{^arch/}) {
5857 CHK("ARCH_INCLUDE_LINUX",
5858 "Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
5860 WARN("INCLUDE_LINUX",
5861 "Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr);
5867 # multi-statement macros should be enclosed in a do while loop, grab the
5868 # first statement and ensure its the whole macro if its not enclosed
5869 # in a known good container
5870 if ($realfile !~ m@/vmlinux.lds.h$@ &&
5871 $line =~ /^.\s*\#\s*define\s*$Ident(\()?/) {
5874 my ($off, $dstat, $dcond, $rest);
5876 my $has_flow_statement = 0;
5877 my $has_arg_concat = 0;
5878 ($dstat, $dcond, $ln, $cnt, $off) =
5879 ctx_statement_block($linenr, $realcnt, 0);
5881 #print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n";
5882 #print "LINE<$lines[$ln-1]> len<" . length($lines[$ln-1]) . "\n";
5884 $has_flow_statement = 1 if ($ctx =~ /\b(goto|return)\b/);
5885 $has_arg_concat = 1 if ($ctx =~ /\#\#/ && $ctx !~ /\#\#\s*(?:__VA_ARGS__|args)\b/);
5887 $dstat =~ s/^.\s*\#\s*define\s+$Ident(\([^\)]*\))?\s*//;
5888 my $define_args = $1;
5889 my $define_stmt = $dstat;
5892 if (defined $define_args && $define_args ne "") {
5893 $define_args = substr($define_args, 1, length($define_args) - 2);
5894 $define_args =~ s/\s*//g;
5895 $define_args =~ s/\\\+?//g;
5896 @def_args = split(",", $define_args);
5900 $dstat =~ s/\\\n.//g;
5901 $dstat =~ s/^\s*//s;
5902 $dstat =~ s/\s*$//s;
5904 # Flatten any parentheses and braces
5905 while ($dstat =~ s/\([^\(\)]*\)/1u/ ||
5906 $dstat =~ s/\{[^\{\}]*\}/1u/ ||
5907 $dstat =~ s/.\[[^\[\]]*\]/1u/)
5911 # Flatten any obvious string concatenation.
5912 while ($dstat =~ s/($String)\s*$Ident/$1/ ||
5913 $dstat =~ s/$Ident\s*($String)/$1/)
5917 # Make asm volatile uses seem like a generic function
5918 $dstat =~ s/\b_*asm_*\s+_*volatile_*\b/asm_volatile/g;
5920 my $exceptions = qr{
5933 #print "REST<$rest> dstat<$dstat> ctx<$ctx>\n";
5936 my $stmt_cnt = statement_rawlines($ctx);
5937 my $herectx = get_stat_here($linenr, $stmt_cnt, $here);
5940 $dstat !~ /^(?:$Ident|-?$Constant),$/ && # 10, // foo(),
5941 $dstat !~ /^(?:$Ident|-?$Constant);$/ && # foo();
5942 $dstat !~ /^[!~-]?(?:$Lval|$Constant)$/ && # 10 // foo() // !foo // ~foo // -foo // foo->bar // foo.bar->baz
5943 $dstat !~ /^'X'$/ && $dstat !~ /^'XX'$/ && # character constants
5944 $dstat !~ /$exceptions/ &&
5945 $dstat !~ /^\.$Ident\s*=/ && # .foo =
5946 $dstat !~ /^(?:\#\s*$Ident|\#\s*$Constant)\s*$/ && # stringification #foo
5947 $dstat !~ /^do\s*$Constant\s*while\s*$Constant;?$/ && # do {...} while (...); // do {...} while (...)
5948 $dstat !~ /^while\s*$Constant\s*$Constant\s*$/ && # while (...) {...}
5949 $dstat !~ /^for\s*$Constant$/ && # for (...)
5950 $dstat !~ /^for\s*$Constant\s+(?:$Ident|-?$Constant)$/ && # for (...) bar()
5951 $dstat !~ /^do\s*{/ && # do {...
5952 $dstat !~ /^\(\{/ && # ({...
5953 $ctx !~ /^.\s*#\s*define\s+TRACE_(?:SYSTEM|INCLUDE_FILE|INCLUDE_PATH)\b/)
5955 if ($dstat =~ /^\s*if\b/) {
5956 ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
5957 "Macros starting with if should be enclosed by a do - while loop to avoid possible if/else logic defects\n" . "$herectx");
5958 } elsif ($dstat =~ /;/) {
5959 ERROR("MULTISTATEMENT_MACRO_USE_DO_WHILE",
5960 "Macros with multiple statements should be enclosed in a do - while loop\n" . "$herectx");
5962 ERROR("COMPLEX_MACRO",
5963 "Macros with complex values should be enclosed in parentheses\n" . "$herectx");
5968 # Make $define_stmt single line, comment-free, etc
5969 my @stmt_array = split('\n', $define_stmt);
5972 foreach my $l (@stmt_array) {
5977 } elsif ($l =~ /^[\+ ]/) {
5978 $define_stmt .= substr($l, 1);
5981 $define_stmt =~ s/$;//g;
5982 $define_stmt =~ s/\s+/ /g;
5983 $define_stmt = trim($define_stmt);
5985 # check if any macro arguments are reused (ignore '...' and 'type')
5986 foreach my $arg (@def_args) {
5987 next if ($arg =~ /\.\.\./);
5988 next if ($arg =~ /^type$/i);
5989 my $tmp_stmt = $define_stmt;
5990 $tmp_stmt =~ s/\b(__must_be_array|offsetof|sizeof|sizeof_field|__stringify|typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
5991 $tmp_stmt =~ s/\#+\s*$arg\b//g;
5992 $tmp_stmt =~ s/\b$arg\s*\#\#//g;
5993 my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g;
5995 CHK("MACRO_ARG_REUSE",
5996 "Macro argument reuse '$arg' - possible side-effects?\n" . "$herectx");
5998 # check if any macro arguments may have other precedence issues
5999 if ($tmp_stmt =~ m/($Operators)?\s*\b$arg\b\s*($Operators)?/m &&
6000 ((defined($1) && $1 ne ',') ||
6001 (defined($2) && $2 ne ','))) {
6002 CHK("MACRO_ARG_PRECEDENCE",
6003 "Macro argument '$arg' may be better as '($arg)' to avoid precedence issues\n" . "$herectx");
6007 # check for macros with flow control, but without ## concatenation
6008 # ## concatenation is commonly a macro that defines a function so ignore those
6009 if ($has_flow_statement && !$has_arg_concat) {
6010 my $cnt = statement_rawlines($ctx);
6011 my $herectx = get_stat_here($linenr, $cnt, $here);
6013 WARN("MACRO_WITH_FLOW_CONTROL",
6014 "Macros with flow control statements should be avoided\n" . "$herectx");
6017 # check for line continuations outside of #defines, preprocessor #, and asm
6020 if ($prevline !~ /^..*\\$/ &&
6021 $line !~ /^\+\s*\#.*\\$/ && # preprocessor
6022 $line !~ /^\+.*\b(__asm__|asm)\b.*\\$/ && # asm
6023 $line =~ /^\+.*\\$/) {
6024 WARN("LINE_CONTINUATIONS",
6025 "Avoid unnecessary line continuations\n" . $herecurr);
6029 # do {} while (0) macro tests:
6030 # single-statement macros do not need to be enclosed in do while (0) loop,
6031 # macro should not end with a semicolon
6032 if ($perl_version_ok &&
6033 $realfile !~ m@/vmlinux.lds.h$@ &&
6034 $line =~ /^.\s*\#\s*define\s+$Ident(\()?/) {
6037 my ($off, $dstat, $dcond, $rest);
6039 ($dstat, $dcond, $ln, $cnt, $off) =
6040 ctx_statement_block($linenr, $realcnt, 0);
6043 $dstat =~ s/\\\n.//g;
6046 if ($dstat =~ /^\+\s*#\s*define\s+$Ident\s*${balanced_parens}\s*do\s*{(.*)\s*}\s*while\s*\(\s*0\s*\)\s*([;\s]*)\s*$/) {
6051 my $cnt = statement_rawlines($ctx);
6052 my $herectx = get_stat_here($linenr, $cnt, $here);
6054 if (($stmts =~ tr/;/;/) == 1 &&
6055 $stmts !~ /^\s*(if|while|for|switch)\b/) {
6056 WARN("SINGLE_STATEMENT_DO_WHILE_MACRO",
6057 "Single statement macros should not use a do {} while (0) loop\n" . "$herectx");
6059 if (defined $semis && $semis ne "") {
6060 WARN("DO_WHILE_MACRO_WITH_TRAILING_SEMICOLON",
6061 "do {} while (0) macros should not be semicolon terminated\n" . "$herectx");
6063 } elsif ($dstat =~ /^\+\s*#\s*define\s+$Ident.*;\s*$/) {
6065 my $cnt = statement_rawlines($ctx);
6066 my $herectx = get_stat_here($linenr, $cnt, $here);
6068 WARN("TRAILING_SEMICOLON",
6069 "macros should not use a trailing semicolon\n" . "$herectx");
6073 # check for redundant bracing round if etc
6074 if ($line =~ /(^.*)\bif\b/ && $1 !~ /else\s*$/) {
6075 my ($level, $endln, @chunks) =
6076 ctx_statement_full($linenr, $realcnt, 1);
6077 #print "chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n";
6078 #print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n";
6079 if ($#chunks > 0 && $level == 0) {
6083 my $herectx = $here . "\n";
6084 my $ln = $linenr - 1;
6085 for my $chunk (@chunks) {
6086 my ($cond, $block) = @{$chunk};
6088 # If the condition carries leading newlines, then count those as offsets.
6089 my ($whitespace) = ($cond =~ /^((?:\s*\n[+-])*\s*)/s);
6090 my $offset = statement_rawlines($whitespace) - 1;
6092 $allowed[$allow] = 0;
6093 #print "COND<$cond> whitespace<$whitespace> offset<$offset>\n";
6095 # We have looked at and allowed this specific line.
6096 $suppress_ifbraces{$ln + $offset} = 1;
6098 $herectx .= "$rawlines[$ln + $offset]\n[...]\n";
6099 $ln += statement_rawlines($block) - 1;
6101 substr($block, 0, length($cond), '');
6103 $seen++ if ($block =~ /^\s*{/);
6105 #print "cond<$cond> block<$block> allowed<$allowed[$allow]>\n";
6106 if (statement_lines($cond) > 1) {
6107 #print "APW: ALLOWED: cond<$cond>\n";
6108 $allowed[$allow] = 1;
6110 if ($block =~/\b(?:if|for|while)\b/) {
6111 #print "APW: ALLOWED: block<$block>\n";
6112 $allowed[$allow] = 1;
6114 if (statement_block_size($block) > 1) {
6115 #print "APW: ALLOWED: lines block<$block>\n";
6116 $allowed[$allow] = 1;
6121 my $sum_allowed = 0;
6122 foreach (@allowed) {
6125 if ($sum_allowed == 0) {
6127 "braces {} are not necessary for any arm of this statement\n" . $herectx);
6128 } elsif ($sum_allowed != $allow &&
6131 "braces {} should be used on all arms of this statement\n" . $herectx);
6136 if (!defined $suppress_ifbraces{$linenr - 1} &&
6137 $line =~ /\b(if|while|for|else)\b/) {
6140 # Check the pre-context.
6141 if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) {
6142 #print "APW: ALLOWED: pre<$1>\n";
6146 my ($level, $endln, @chunks) =
6147 ctx_statement_full($linenr, $realcnt, $-[0]);
6149 # Check the condition.
6150 my ($cond, $block) = @{$chunks[0]};
6151 #print "CHECKING<$linenr> cond<$cond> block<$block>\n";
6152 if (defined $cond) {
6153 substr($block, 0, length($cond), '');
6155 if (statement_lines($cond) > 1) {
6156 #print "APW: ALLOWED: cond<$cond>\n";
6159 if ($block =~/\b(?:if|for|while)\b/) {
6160 #print "APW: ALLOWED: block<$block>\n";
6163 if (statement_block_size($block) > 1) {
6164 #print "APW: ALLOWED: lines block<$block>\n";
6167 # Check the post-context.
6168 if (defined $chunks[1]) {
6169 my ($cond, $block) = @{$chunks[1]};
6170 if (defined $cond) {
6171 substr($block, 0, length($cond), '');
6173 if ($block =~ /^\s*\{/) {
6174 #print "APW: ALLOWED: chunk-1 block<$block>\n";
6178 if ($level == 0 && $block =~ /^\s*\{/ && !$allowed) {
6179 my $cnt = statement_rawlines($block);
6180 my $herectx = get_stat_here($linenr, $cnt, $here);
6183 "braces {} are not necessary for single statement blocks\n" . $herectx);
6187 # check for single line unbalanced braces
6188 if ($sline =~ /^.\s*\}\s*else\s*$/ ||
6189 $sline =~ /^.\s*else\s*\{\s*$/) {
6190 CHK("BRACES", "Unbalanced braces around else statement\n" . $herecurr);
6193 # check for unnecessary blank lines around braces
6194 if (($line =~ /^.\s*}\s*$/ && $prevrawline =~ /^.\s*$/)) {
6196 "Blank lines aren't necessary before a close brace '}'\n" . $hereprev) &&
6197 $fix && $prevrawline =~ /^\+/) {
6198 fix_delete_line($fixlinenr - 1, $prevrawline);
6201 if (($rawline =~ /^.\s*$/ && $prevline =~ /^..*{\s*$/)) {
6203 "Blank lines aren't necessary after an open brace '{'\n" . $hereprev) &&
6205 fix_delete_line($fixlinenr, $rawline);
6209 # no volatiles please
6210 my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b};
6211 if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) {
6213 "Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst\n" . $herecurr);
6216 # Check for user-visible strings broken across lines, which breaks the ability
6217 # to grep for the string. Make exceptions when the previous string ends in a
6218 # newline (multiple lines in one string constant) or '\t', '\r', ';', or '{'
6219 # (common in inline assembly) or is a octal \123 or hexadecimal \xaf value
6220 if ($line =~ /^\+\s*$String/ &&
6221 $prevline =~ /"\s*$/ &&
6222 $prevrawline !~ /(?:\\(?:[ntr]|[0-7]{1,3}|x[0-9a-fA-F]{1,2})|;\s*|\{\s*)"\s*$/) {
6223 if (WARN("SPLIT_STRING",
6224 "quoted string split across lines\n" . $hereprev) &&
6226 $prevrawline =~ /^\+.*"\s*$/ &&
6227 $last_coalesced_string_linenr != $linenr - 1) {
6228 my $extracted_string = get_quoted_string($line, $rawline);
6229 my $comma_close = "";
6230 if ($rawline =~ /\Q$extracted_string\E(\s*\)\s*;\s*$|\s*,\s*)/) {
6234 fix_delete_line($fixlinenr - 1, $prevrawline);
6235 fix_delete_line($fixlinenr, $rawline);
6236 my $fixedline = $prevrawline;
6237 $fixedline =~ s/"\s*$//;
6238 $fixedline .= substr($extracted_string, 1) . trim($comma_close);
6239 fix_insert_line($fixlinenr - 1, $fixedline);
6240 $fixedline = $rawline;
6241 $fixedline =~ s/\Q$extracted_string\E\Q$comma_close\E//;
6242 if ($fixedline !~ /\+\s*$/) {
6243 fix_insert_line($fixlinenr, $fixedline);
6245 $last_coalesced_string_linenr = $linenr;
6249 # check for missing a space in a string concatenation
6250 if ($prevrawline =~ /[^\\]\w"$/ && $rawline =~ /^\+[\t ]+"\w/) {
6251 WARN('MISSING_SPACE',
6252 "break quoted strings at a space character\n" . $hereprev);
6255 # check for an embedded function name in a string when the function is known
6256 # This does not work very well for -f --file checking as it depends on patch
6257 # context providing the function name or a single line form for in-file
6258 # function declarations
6259 if ($line =~ /^\+.*$String/ &&
6260 defined($context_function) &&
6261 get_quoted_string($line, $rawline) =~ /\b$context_function\b/ &&
6262 length(get_quoted_string($line, $rawline)) != (length($context_function) + 2)) {
6263 WARN("EMBEDDED_FUNCTION_NAME",
6264 "Prefer using '\"%s...\", __func__' to using '$context_function', this function's name, in a string\n" . $herecurr);
6267 # check for unnecessary function tracing like uses
6268 # This does not use $logFunctions because there are many instances like
6269 # 'dprintk(FOO, "%s()\n", __func__);' which do not match $logFunctions
6270 if ($rawline =~ /^\+.*\([^"]*"$tracing_logging_tags{0,3}%s(?:\s*\(\s*\)\s*)?$tracing_logging_tags{0,3}(?:\\n)?"\s*,\s*__func__\s*\)\s*;/) {
6271 if (WARN("TRACING_LOGGING",
6272 "Unnecessary ftrace-like logging - prefer using ftrace\n" . $herecurr) &&
6274 fix_delete_line($fixlinenr, $rawline);
6278 # check for spaces before a quoted newline
6279 if ($rawline =~ /^.*\".*\s\\n/) {
6280 if (WARN("QUOTED_WHITESPACE_BEFORE_NEWLINE",
6281 "unnecessary whitespace before a quoted newline\n" . $herecurr) &&
6283 $fixed[$fixlinenr] =~ s/^(\+.*\".*)\s+\\n/$1\\n/;
6288 # concatenated string without spaces between elements
6289 if ($line =~ /$String[A-Z_]/ ||
6290 ($line =~ /([A-Za-z0-9_]+)$String/ && $1 !~ /^[Lu]$/)) {
6291 if (CHK("CONCATENATED_STRING",
6292 "Concatenated strings should use spaces between elements\n" . $herecurr) &&
6294 while ($line =~ /($String)/g) {
6295 my $extracted_string = substr($rawline, $-[0], $+[0] - $-[0]);
6296 $fixed[$fixlinenr] =~ s/\Q$extracted_string\E([A-Za-z0-9_])/$extracted_string $1/;
6297 $fixed[$fixlinenr] =~ s/([A-Za-z0-9_])\Q$extracted_string\E/$1 $extracted_string/;
6302 # uncoalesced string fragments
6303 if ($line =~ /$String\s*[Lu]?"/) {
6304 if (WARN("STRING_FRAGMENTS",
6305 "Consecutive strings are generally better as a single string\n" . $herecurr) &&
6307 while ($line =~ /($String)(?=\s*")/g) {
6308 my $extracted_string = substr($rawline, $-[0], $+[0] - $-[0]);
6309 $fixed[$fixlinenr] =~ s/\Q$extracted_string\E\s*"/substr($extracted_string, 0, -1)/e;
6314 # check for non-standard and hex prefixed decimal printf formats
6315 my $show_L = 1; #don't show the same defect twice
6317 while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
6318 my $string = substr($rawline, $-[1], $+[1] - $-[1]);
6319 $string =~ s/%%/__/g;
6321 if ($show_L && $string =~ /%[\*\d\.\$]*L([diouxX])/) {
6323 "\%L$1 is non-standard C, use %ll$1\n" . $herecurr);
6327 if ($show_Z && $string =~ /%[\*\d\.\$]*Z([diouxX])/) {
6329 "%Z$1 is non-standard C, use %z$1\n" . $herecurr);
6332 # check for 0x<decimal>
6333 if ($string =~ /0x%[\*\d\.\$\Llzth]*[diou]/) {
6334 ERROR("PRINTF_0XDECIMAL",
6335 "Prefixing 0x with decimal output is defective\n" . $herecurr);
6339 # check for line continuations in quoted strings with odd counts of "
6340 if ($rawline =~ /\\$/ && $sline =~ tr/"/"/ % 2) {
6341 WARN("LINE_CONTINUATIONS",
6342 "Avoid line continuations in quoted strings\n" . $herecurr);
6346 if ($line =~ /^.\s*\#\s*if\s+0\b/) {
6348 "Consider removing the code enclosed by this #if 0 and its #endif\n" . $herecurr);
6352 if ($line =~ /^.\s*\#\s*if\s+1\b/) {
6354 "Consider removing the #if 1 and its #endif\n" . $herecurr);
6357 # check for needless "if (<foo>) fn(<foo>)" uses
6358 if ($prevline =~ /\bif\s*\(\s*($Lval)\s*\)/) {
6359 my $tested = quotemeta($1);
6360 my $expr = '\s*\(\s*' . $tested . '\s*\)\s*;';
6361 if ($line =~ /\b(kfree|usb_free_urb|debugfs_remove(?:_recursive)?|(?:kmem_cache|mempool|dma_pool)_destroy)$expr/) {
6363 if (WARN('NEEDLESS_IF',
6364 "$func(NULL) is safe and this check is probably not required\n" . $hereprev) &&
6367 my $leading_tabs = "";
6368 my $new_leading_tabs = "";
6369 if ($lines[$linenr - 2] =~ /^\+(\t*)if\s*\(\s*$tested\s*\)\s*$/) {
6374 if ($lines[$linenr - 1] =~ /^\+(\t+)$func\s*\(\s*$tested\s*\)\s*;\s*$/) {
6375 $new_leading_tabs = $1;
6376 if (length($leading_tabs) + 1 ne length($new_leading_tabs)) {
6383 fix_delete_line($fixlinenr - 1, $prevrawline);
6384 $fixed[$fixlinenr] =~ s/^\+$new_leading_tabs/\+$leading_tabs/;
6390 # check for unnecessary "Out of Memory" messages
6391 if ($line =~ /^\+.*\b$logFunctions\s*\(/ &&
6392 $prevline =~ /^[ \+]\s*if\s*\(\s*(\!\s*|NULL\s*==\s*)?($Lval)(\s*==\s*NULL\s*)?\s*\)/ &&
6393 (defined $1 || defined $3) &&
6396 my $testline = $lines[$linenr - 3];
6398 my ($s, $c) = ctx_statement_block($linenr - 3, $realcnt, 0);
6399 # print("line: <$line>\nprevline: <$prevline>\ns: <$s>\nc: <$c>\n\n\n");
6401 if ($s =~ /(?:^|\n)[ \+]\s*(?:$Type\s*)?\Q$testval\E\s*=\s*(?:\([^\)]*\)\s*)?\s*$allocFunctions\s*\(/ &&
6402 $s !~ /\b__GFP_NOWARN\b/ ) {
6404 "Possible unnecessary 'out of memory' message\n" . $hereprev);
6408 # check for logging functions with KERN_<LEVEL>
6409 if ($line !~ /printk(?:_ratelimited|_once)?\s*\(/ &&
6410 $line =~ /\b$logFunctions\s*\(.*\b(KERN_[A-Z]+)\b/) {
6412 if (WARN("UNNECESSARY_KERN_LEVEL",
6413 "Possible unnecessary $level\n" . $herecurr) &&
6415 $fixed[$fixlinenr] =~ s/\s*$level\s*//;
6419 # check for logging continuations
6420 if ($line =~ /\bprintk\s*\(\s*KERN_CONT\b|\bpr_cont\s*\(/) {
6421 WARN("LOGGING_CONTINUATION",
6422 "Avoid logging continuation uses where feasible\n" . $herecurr);
6425 # check for unnecessary use of %h[xudi] and %hh[xudi] in logging functions
6426 if (defined $stat &&
6427 $line =~ /\b$logFunctions\s*\(/ &&
6428 index($stat, '"') >= 0) {
6429 my $lc = $stat =~ tr@\n@@;
6430 $lc = $lc + $linenr;
6431 my $stat_real = get_stat_real($linenr, $lc);
6432 pos($stat_real) = index($stat_real, '"');
6433 while ($stat_real =~ /[^\"%]*(%[\#\d\.\*\-]*(h+)[idux])/g) {
6436 my $lineoff = substr($stat_real, 0, $-[1]) =~ tr@\n@@;
6437 if (WARN("UNNECESSARY_MODIFIER",
6438 "Integer promotion: Using '$h' in '$pspec' is unnecessary\n" . "$here\n$stat_real\n") &&
6439 $fix && $fixed[$fixlinenr + $lineoff] =~ /^\+/) {
6442 $fixed[$fixlinenr + $lineoff] =~ s/\Q$pspec\E/$nspec/;
6447 # check for mask then right shift without a parentheses
6448 if ($perl_version_ok &&
6449 $line =~ /$LvalOrFunc\s*\&\s*($LvalOrFunc)\s*>>/ &&
6450 $4 !~ /^\&/) { # $LvalOrFunc may be &foo, ignore if so
6451 WARN("MASK_THEN_SHIFT",
6452 "Possible precedence defect with mask then right shift - may need parentheses\n" . $herecurr);
6455 # check for pointer comparisons to NULL
6456 if ($perl_version_ok) {
6457 while ($line =~ /\b$LvalOrFunc\s*(==|\!=)\s*NULL\b/g) {
6460 $equal = "" if ($4 eq "!=");
6461 if (CHK("COMPARISON_TO_NULL",
6462 "Comparison to NULL could be written \"${equal}${val}\"\n" . $herecurr) &&
6464 $fixed[$fixlinenr] =~ s/\b\Q$val\E\s*(?:==|\!=)\s*NULL\b/$equal$val/;
6469 # check for bad placement of section $InitAttribute (e.g.: __initdata)
6470 if ($line =~ /(\b$InitAttribute\b)/) {
6472 if ($line =~ /^\+\s*static\s+(?:const\s+)?(?:$attr\s+)?($NonptrTypeWithAttr)\s+(?:$attr\s+)?($Ident(?:\[[^]]*\])?)\s*[=;]/) {
6475 if ((($ptr =~ /\b(union|struct)\s+$attr\b/ &&
6476 ERROR("MISPLACED_INIT",
6477 "$attr should be placed after $var\n" . $herecurr)) ||
6478 ($ptr !~ /\b(union|struct)\s+$attr\b/ &&
6479 WARN("MISPLACED_INIT",
6480 "$attr should be placed after $var\n" . $herecurr))) &&
6482 $fixed[$fixlinenr] =~ s/(\bstatic\s+(?:const\s+)?)(?:$attr\s+)?($NonptrTypeWithAttr)\s+(?:$attr\s+)?($Ident(?:\[[^]]*\])?)\s*([=;])\s*/"$1" . trim(string_find_replace($2, "\\s*$attr\\s*", " ")) . " " . trim(string_find_replace($3, "\\s*$attr\\s*", "")) . " $attr" . ("$4" eq ";" ? ";" : " = ")/e;
6487 # check for $InitAttributeData (ie: __initdata) with const
6488 if ($line =~ /\bconst\b/ && $line =~ /($InitAttributeData)/) {
6490 $attr =~ /($InitAttributePrefix)(.*)/;
6491 my $attr_prefix = $1;
6493 if (ERROR("INIT_ATTRIBUTE",
6494 "Use of const init definition must use ${attr_prefix}initconst\n" . $herecurr) &&
6496 $fixed[$fixlinenr] =~
6497 s/$InitAttributeData/${attr_prefix}initconst/;
6501 # check for $InitAttributeConst (ie: __initconst) without const
6502 if ($line !~ /\bconst\b/ && $line =~ /($InitAttributeConst)/) {
6504 if (ERROR("INIT_ATTRIBUTE",
6505 "Use of $attr requires a separate use of const\n" . $herecurr) &&
6507 my $lead = $fixed[$fixlinenr] =~
6508 /(^\+\s*(?:static\s+))/;
6510 $lead = "$lead " if ($lead !~ /^\+$/);
6511 $lead = "${lead}const ";
6512 $fixed[$fixlinenr] =~ s/(^\+\s*(?:static\s+))/$lead/;
6516 # check for __read_mostly with const non-pointer (should just be const)
6517 if ($line =~ /\b__read_mostly\b/ &&
6518 $line =~ /($Type)\s*$Ident/ && $1 !~ /\*\s*$/ && $1 =~ /\bconst\b/) {
6519 if (ERROR("CONST_READ_MOSTLY",
6520 "Invalid use of __read_mostly with const type\n" . $herecurr) &&
6522 $fixed[$fixlinenr] =~ s/\s+__read_mostly\b//;
6526 # don't use __constant_<foo> functions outside of include/uapi/
6527 if ($realfile !~ m@^include/uapi/@ &&
6528 $line =~ /(__constant_(?:htons|ntohs|[bl]e(?:16|32|64)_to_cpu|cpu_to_[bl]e(?:16|32|64)))\s*\(/) {
6529 my $constant_func = $1;
6530 my $func = $constant_func;
6531 $func =~ s/^__constant_//;
6532 if (WARN("CONSTANT_CONVERSION",
6533 "$constant_func should be $func\n" . $herecurr) &&
6535 $fixed[$fixlinenr] =~ s/\b$constant_func\b/$func/g;
6539 # prefer usleep_range over udelay
6540 if ($line =~ /\budelay\s*\(\s*(\d+)\s*\)/) {
6542 # ignore udelay's < 10, however
6543 if (! ($delay < 10) ) {
6545 "usleep_range is preferred over udelay; see Documentation/timers/timers-howto.rst\n" . $herecurr);
6547 if ($delay > 2000) {
6549 "long udelay - prefer mdelay; see arch/arm/include/asm/delay.h\n" . $herecurr);
6553 # warn about unexpectedly long msleep's
6554 if ($line =~ /\bmsleep\s*\((\d+)\);/) {
6557 "msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.rst\n" . $herecurr);
6561 # check for comparisons of jiffies
6562 if ($line =~ /\bjiffies\s*$Compare|$Compare\s*jiffies\b/) {
6563 WARN("JIFFIES_COMPARISON",
6564 "Comparing jiffies is almost always wrong; prefer time_after, time_before and friends\n" . $herecurr);
6567 # check for comparisons of get_jiffies_64()
6568 if ($line =~ /\bget_jiffies_64\s*\(\s*\)\s*$Compare|$Compare\s*get_jiffies_64\s*\(\s*\)/) {
6569 WARN("JIFFIES_COMPARISON",
6570 "Comparing get_jiffies_64() is almost always wrong; prefer time_after64, time_before64 and friends\n" . $herecurr);
6573 # warn about #ifdefs in C files
6574 # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) {
6575 # print "#ifdef in C files should be avoided\n";
6576 # print "$herecurr";
6580 # warn about spacing in #ifdefs
6581 if ($line =~ /^.\s*\#\s*(ifdef|ifndef|elif)\s\s+/) {
6582 if (ERROR("SPACING",
6583 "exactly one space required after that #$1\n" . $herecurr) &&
6585 $fixed[$fixlinenr] =~
6586 s/^(.\s*\#\s*(ifdef|ifndef|elif))\s{2,}/$1 /;
6591 # check for spinlock_t definitions without a comment.
6592 if ($line =~ /^.\s*(struct\s+mutex|spinlock_t)\s+\S+;/ ||
6593 $line =~ /^.\s*(DEFINE_MUTEX)\s*\(/) {
6595 if (!ctx_has_comment($first_line, $linenr)) {
6596 CHK("UNCOMMENTED_DEFINITION",
6597 "$1 definition without comment\n" . $herecurr);
6600 # check for memory barriers without a comment.
6607 my $barrier_stems = qr{
6615 my $all_barriers = qr{
6617 smp_(?:$barrier_stems)|
6618 virt_(?:$barrier_stems)
6621 if ($line =~ /\b(?:$all_barriers)\s*\(/) {
6622 if (!ctx_has_comment($first_line, $linenr)) {
6623 WARN("MEMORY_BARRIER",
6624 "memory barrier without comment\n" . $herecurr);
6628 my $underscore_smp_barriers = qr{__smp_(?:$barrier_stems)}x;
6630 if ($realfile !~ m@^include/asm-generic/@ &&
6631 $realfile !~ m@/barrier\.h$@ &&
6632 $line =~ m/\b(?:$underscore_smp_barriers)\s*\(/ &&
6633 $line !~ m/^.\s*\#\s*define\s+(?:$underscore_smp_barriers)\s*\(/) {
6634 WARN("MEMORY_BARRIER",
6635 "__smp memory barriers shouldn't be used outside barrier.h and asm-generic\n" . $herecurr);
6638 # check for waitqueue_active without a comment.
6639 if ($line =~ /\bwaitqueue_active\s*\(/) {
6640 if (!ctx_has_comment($first_line, $linenr)) {
6641 WARN("WAITQUEUE_ACTIVE",
6642 "waitqueue_active without comment\n" . $herecurr);
6646 # check for data_race without a comment.
6647 if ($line =~ /\bdata_race\s*\(/) {
6648 if (!ctx_has_comment($first_line, $linenr)) {
6650 "data_race without comment\n" . $herecurr);
6654 # check of hardware specific defines
6655 if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
6657 "architecture specific defines should be avoided\n" . $herecurr);
6660 # check that the storage class is not after a type
6661 if ($line =~ /\b($Type)\s+($Storage)\b/) {
6662 WARN("STORAGE_CLASS",
6663 "storage class '$2' should be located before type '$1'\n" . $herecurr);
6665 # Check that the storage class is at the beginning of a declaration
6666 if ($line =~ /\b$Storage\b/ &&
6667 $line !~ /^.\s*$Storage/ &&
6668 $line =~ /^.\s*(.+?)\$Storage\s/ &&
6669 $1 !~ /[\,\)]\s*$/) {
6670 WARN("STORAGE_CLASS",
6671 "storage class should be at the beginning of the declaration\n" . $herecurr);
6674 # check the location of the inline attribute, that it is between
6675 # storage class and type.
6676 if ($line =~ /\b$Type\s+$Inline\b/ ||
6677 $line =~ /\b$Inline\s+$Storage\b/) {
6678 ERROR("INLINE_LOCATION",
6679 "inline keyword should sit between storage class and type\n" . $herecurr);
6682 # Check for __inline__ and __inline, prefer inline
6683 if ($realfile !~ m@\binclude/uapi/@ &&
6684 $line =~ /\b(__inline__|__inline)\b/) {
6686 "plain inline is preferred over $1\n" . $herecurr) &&
6688 $fixed[$fixlinenr] =~ s/\b(__inline__|__inline)\b/inline/;
6693 # Check for compiler attributes
6694 if ($realfile !~ m@\binclude/uapi/@ &&
6695 $rawline =~ /\b__attribute__\s*\(\s*($balanced_parens)\s*\)/) {
6697 $attr =~ s/\s*\(\s*(.*)\)\s*/$1/;
6700 "alias" => "__alias",
6701 "aligned" => "__aligned",
6702 "always_inline" => "__always_inline",
6703 "assume_aligned" => "__assume_aligned",
6705 "const" => "__attribute_const__",
6707 "designated_init" => "__designated_init",
6708 "externally_visible" => "__visible",
6709 "format" => "printf|scanf",
6710 "gnu_inline" => "__gnu_inline",
6711 "malloc" => "__malloc",
6713 "no_caller_saved_registers" => "__no_caller_saved_registers",
6714 "noclone" => "__noclone",
6715 "noinline" => "noinline",
6716 "nonstring" => "__nonstring",
6717 "noreturn" => "__noreturn",
6718 "packed" => "__packed",
6720 "section" => "__section",
6725 while ($attr =~ /\s*(\w+)\s*(${balanced_parens})?/g) {
6728 $params = $2 if defined($2);
6729 my $curr_attr = $orig_attr;
6730 $curr_attr =~ s/^[\s_]+|[\s_]+$//g;
6731 if (exists($attr_list{$curr_attr})) {
6732 my $new = $attr_list{$curr_attr};
6733 if ($curr_attr eq "format" && $params) {
6734 $params =~ /^\s*\(\s*(\w+)\s*,\s*(.*)/;
6737 $new = "$new$params";
6739 if (WARN("PREFER_DEFINED_ATTRIBUTE_MACRO",
6740 "Prefer $new over __attribute__(($orig_attr$params))\n" . $herecurr) &&
6742 my $remove = "\Q$orig_attr\E" . '\s*' . "\Q$params\E" . '(?:\s*,\s*)?';
6743 $fixed[$fixlinenr] =~ s/$remove//;
6744 $fixed[$fixlinenr] =~ s/\b__attribute__/$new __attribute__/;
6745 $fixed[$fixlinenr] =~ s/\}\Q$new\E/} $new/;
6746 $fixed[$fixlinenr] =~ s/ __attribute__\s*\(\s*\(\s*\)\s*\)//;
6751 # Check for __attribute__ unused, prefer __always_unused or __maybe_unused
6752 if ($attr =~ /^_*unused/) {
6753 WARN("PREFER_DEFINED_ATTRIBUTE_MACRO",
6754 "__always_unused or __maybe_unused is preferred over __attribute__((__unused__))\n" . $herecurr);
6758 # Check for __attribute__ weak, or __weak declarations (may have link issues)
6759 if ($perl_version_ok &&
6760 $line =~ /(?:$Declare|$DeclareMisordered)\s*$Ident\s*$balanced_parens\s*(?:$Attribute)?\s*;/ &&
6761 ($line =~ /\b__attribute__\s*\(\s*\(.*\bweak\b/ ||
6762 $line =~ /\b__weak\b/)) {
6763 ERROR("WEAK_DECLARATION",
6764 "Using weak declarations can have unintended link defects\n" . $herecurr);
6767 # check for c99 types like uint8_t used outside of uapi/ and tools/
6768 if ($realfile !~ m@\binclude/uapi/@ &&
6769 $realfile !~ m@\btools/@ &&
6770 $line =~ /\b($Declare)\s*$Ident\s*[=;,\[]/) {
6772 if ($type =~ /\b($typeC99Typedefs)\b/) {
6774 my $kernel_type = 'u';
6775 $kernel_type = 's' if ($type =~ /^_*[si]/);
6778 if (CHK("PREFER_KERNEL_TYPES",
6779 "Prefer kernel type '$kernel_type' over '$type'\n" . $herecurr) &&
6781 $fixed[$fixlinenr] =~ s/\b$type\b/$kernel_type/;
6786 # check for cast of C90 native int or longer types constants
6787 if ($line =~ /(\(\s*$C90_int_types\s*\)\s*)($Constant)\b/) {
6791 my $newconst = $const;
6792 $newconst =~ s/${Int_type}$//;
6793 $suffix .= 'U' if ($cast =~ /\bunsigned\b/);
6794 if ($cast =~ /\blong\s+long\b/) {
6796 } elsif ($cast =~ /\blong\b/) {
6799 if (WARN("TYPECAST_INT_CONSTANT",
6800 "Unnecessary typecast of c90 int constant - '$cast$const' could be '$const$suffix'\n" . $herecurr) &&
6802 $fixed[$fixlinenr] =~ s/\Q$cast\E$const\b/$newconst$suffix/;
6806 # check for sizeof(&)
6807 if ($line =~ /\bsizeof\s*\(\s*\&/) {
6808 WARN("SIZEOF_ADDRESS",
6809 "sizeof(& should be avoided\n" . $herecurr);
6812 # check for sizeof without parenthesis
6813 if ($line =~ /\bsizeof\s+((?:\*\s*|)$Lval|$Type(?:\s+$Lval|))/) {
6814 if (WARN("SIZEOF_PARENTHESIS",
6815 "sizeof $1 should be sizeof($1)\n" . $herecurr) &&
6817 $fixed[$fixlinenr] =~ s/\bsizeof\s+((?:\*\s*|)$Lval|$Type(?:\s+$Lval|))/"sizeof(" . trim($1) . ")"/ex;
6821 # check for struct spinlock declarations
6822 if ($line =~ /^.\s*\bstruct\s+spinlock\s+\w+\s*;/) {
6823 WARN("USE_SPINLOCK_T",
6824 "struct spinlock should be spinlock_t\n" . $herecurr);
6827 # check for seq_printf uses that could be seq_puts
6828 if ($sline =~ /\bseq_printf\s*\(.*"\s*\)\s*;\s*$/) {
6829 my $fmt = get_quoted_string($line, $rawline);
6832 if (WARN("PREFER_SEQ_PUTS",
6833 "Prefer seq_puts to seq_printf\n" . $herecurr) &&
6835 $fixed[$fixlinenr] =~ s/\bseq_printf\b/seq_puts/;
6840 # check for vsprintf extension %p<foo> misuses
6841 if ($perl_version_ok &&
6843 $stat =~ /^\+(?![^\{]*\{\s*).*\b(\w+)\s*\(.*$String\s*,/s &&
6844 $1 !~ /^_*volatile_*$/) {
6847 my $lc = $stat =~ tr@\n@@;
6848 $lc = $lc + $linenr;
6849 for (my $count = $linenr; $count <= $lc; $count++) {
6853 my $bad_specifier = "";
6854 my $fmt = get_quoted_string($lines[$count - 1], raw_line($count, 0));
6857 while ($fmt =~ /(\%[\*\d\.]*p(\w)(\w*))/g) {
6861 if ($extension !~ /[4SsBKRraEehMmIiUDdgVCbGNOxtf]/ ||
6862 ($extension eq "f" &&
6863 defined $qualifier && $qualifier !~ /^w/) ||
6864 ($extension eq "4" &&
6865 defined $qualifier && $qualifier !~ /^cc/)) {
6866 $bad_specifier = $specifier;
6869 if ($extension eq "x" && !defined($stat_real)) {
6870 if (!defined($stat_real)) {
6871 $stat_real = get_stat_real($linenr, $lc);
6873 WARN("VSPRINTF_SPECIFIER_PX",
6874 "Using vsprintf specifier '\%px' potentially exposes the kernel memory layout, if you don't really need the address please consider using '\%p'.\n" . "$here\n$stat_real\n");
6877 if ($bad_specifier ne "") {
6878 my $stat_real = get_stat_real($linenr, $lc);
6879 my $ext_type = "Invalid";
6881 if ($bad_specifier =~ /p[Ff]/) {
6882 $use = " - use %pS instead";
6883 $use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);
6886 WARN("VSPRINTF_POINTER_EXTENSION",
6887 "$ext_type vsprintf pointer extension '$bad_specifier'$use\n" . "$here\n$stat_real\n");
6892 # Check for misused memsets
6893 if ($perl_version_ok &&
6895 $stat =~ /^\+(?:.*?)\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*$FuncArg\s*\)/) {
6901 if ($ms_size =~ /^(0x|)0$/i) {
6903 "memset to 0's uses 0 as the 2nd argument, not the 3rd\n" . "$here\n$stat\n");
6904 } elsif ($ms_size =~ /^(0x|)1$/i) {
6906 "single byte memset is suspicious. Swapped 2nd/3rd argument?\n" . "$here\n$stat\n");
6910 # Check for memcpy(foo, bar, ETH_ALEN) that could be ether_addr_copy(foo, bar)
6911 # if ($perl_version_ok &&
6913 # $stat =~ /^\+(?:.*?)\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
6914 # if (WARN("PREFER_ETHER_ADDR_COPY",
6915 # "Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)\n" . "$here\n$stat\n") &&
6917 # $fixed[$fixlinenr] =~ s/\bmemcpy\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/ether_addr_copy($2, $7)/;
6921 # Check for memcmp(foo, bar, ETH_ALEN) that could be ether_addr_equal*(foo, bar)
6922 # if ($perl_version_ok &&
6924 # $stat =~ /^\+(?:.*?)\bmemcmp\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
6925 # WARN("PREFER_ETHER_ADDR_EQUAL",
6926 # "Prefer ether_addr_equal() or ether_addr_equal_unaligned() over memcmp()\n" . "$here\n$stat\n")
6929 # check for memset(foo, 0x0, ETH_ALEN) that could be eth_zero_addr
6930 # check for memset(foo, 0xFF, ETH_ALEN) that could be eth_broadcast_addr
6931 # if ($perl_version_ok &&
6933 # $stat =~ /^\+(?:.*?)\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\,\s*ETH_ALEN\s*\)/) {
6937 # if ($ms_val =~ /^(?:0x|)0+$/i) {
6938 # if (WARN("PREFER_ETH_ZERO_ADDR",
6939 # "Prefer eth_zero_addr over memset()\n" . "$here\n$stat\n") &&
6941 # $fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_zero_addr($2)/;
6943 # } elsif ($ms_val =~ /^(?:0xff|255)$/i) {
6944 # if (WARN("PREFER_ETH_BROADCAST_ADDR",
6945 # "Prefer eth_broadcast_addr() over memset()\n" . "$here\n$stat\n") &&
6947 # $fixed[$fixlinenr] =~ s/\bmemset\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*,\s*ETH_ALEN\s*\)/eth_broadcast_addr($2)/;
6952 # strlcpy uses that should likely be strscpy
6953 if ($line =~ /\bstrlcpy\s*\(/) {
6955 "Prefer strscpy over strlcpy - see: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw\@mail.gmail.com/\n" . $herecurr);
6958 # typecasts on min/max could be min_t/max_t
6959 if ($perl_version_ok &&
6961 $stat =~ /^\+(?:.*?)\b(min|max)\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\)/) {
6962 if (defined $2 || defined $7) {
6964 my $cast1 = deparenthesize($2);
6966 my $cast2 = deparenthesize($7);
6970 if ($cast1 ne "" && $cast2 ne "" && $cast1 ne $cast2) {
6971 $cast = "$cast1 or $cast2";
6972 } elsif ($cast1 ne "") {
6978 "$call() should probably be ${call}_t($cast, $arg1, $arg2)\n" . "$here\n$stat\n");
6982 # check usleep_range arguments
6983 if ($perl_version_ok &&
6985 $stat =~ /^\+(?:.*?)\busleep_range\s*\(\s*($FuncArg)\s*,\s*($FuncArg)\s*\)/) {
6989 WARN("USLEEP_RANGE",
6990 "usleep_range should not use min == max args; see Documentation/timers/timers-howto.rst\n" . "$here\n$stat\n");
6991 } elsif ($min =~ /^\d+$/ && $max =~ /^\d+$/ &&
6993 WARN("USLEEP_RANGE",
6994 "usleep_range args reversed, use min then max; see Documentation/timers/timers-howto.rst\n" . "$here\n$stat\n");
6998 # check for naked sscanf
6999 if ($perl_version_ok &&
7001 $line =~ /\bsscanf\b/ &&
7002 ($stat !~ /$Ident\s*=\s*sscanf\s*$balanced_parens/ &&
7003 $stat !~ /\bsscanf\s*$balanced_parens\s*(?:$Compare)/ &&
7004 $stat !~ /(?:$Compare)\s*\bsscanf\s*$balanced_parens/)) {
7005 my $lc = $stat =~ tr@\n@@;
7006 $lc = $lc + $linenr;
7007 my $stat_real = get_stat_real($linenr, $lc);
7008 WARN("NAKED_SSCANF",
7009 "unchecked sscanf return value\n" . "$here\n$stat_real\n");
7012 # check for simple sscanf that should be kstrto<foo>
7013 if ($perl_version_ok &&
7015 $line =~ /\bsscanf\b/) {
7016 my $lc = $stat =~ tr@\n@@;
7017 $lc = $lc + $linenr;
7018 my $stat_real = get_stat_real($linenr, $lc);
7019 if ($stat_real =~ /\bsscanf\b\s*\(\s*$FuncArg\s*,\s*("[^"]+")/) {
7021 my $count = $format =~ tr@%@%@;
7023 $format =~ /^"\%(?i:ll[udxi]|[udxi]ll|ll|[hl]h?[udxi]|[udxi][hl]h?|[hl]h?|[udxi])"$/) {
7024 WARN("SSCANF_TO_KSTRTO",
7025 "Prefer kstrto<type> to single variable sscanf\n" . "$here\n$stat_real\n");
7030 # check for new externs in .h files.
7031 if ($realfile =~ /\.h$/ &&
7032 $line =~ /^\+\s*(extern\s+)$Type\s*$Ident\s*\(/s) {
7033 if (CHK("AVOID_EXTERNS",
7034 "extern prototypes should be avoided in .h files\n" . $herecurr) &&
7036 $fixed[$fixlinenr] =~ s/(.*)\bextern\b\s*(.*)/$1$2/;
7040 # check for new externs in .c files.
7041 if ($realfile =~ /\.c$/ && defined $stat &&
7042 $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s)
7044 my $function_name = $1;
7045 my $paren_space = $2;
7048 if (defined $cond) {
7049 substr($s, 0, length($cond), '');
7053 WARN("AVOID_EXTERNS",
7054 "externs should be avoided in .c files\n" . $herecurr);
7057 if ($paren_space =~ /\n/) {
7058 WARN("FUNCTION_ARGUMENTS",
7059 "arguments for function declarations should follow identifier\n" . $herecurr);
7062 } elsif ($realfile =~ /\.c$/ && defined $stat &&
7063 $stat =~ /^.\s*extern\s+/)
7065 WARN("AVOID_EXTERNS",
7066 "externs should be avoided in .c files\n" . $herecurr);
7069 # check for function declarations that have arguments without identifier names
7070 if (defined $stat &&
7071 $stat =~ /^.\s*(?:extern\s+)?$Type\s*(?:$Ident|\(\s*\*\s*$Ident\s*\))\s*\(\s*([^{]+)\s*\)\s*;/s &&
7073 my $args = trim($1);
7074 while ($args =~ m/\s*($Type\s*(?:$Ident|\(\s*\*\s*$Ident?\s*\)\s*$balanced_parens)?)/g) {
7076 if ($arg =~ /^$Type$/ && $arg !~ /enum\s+$Ident$/) {
7077 WARN("FUNCTION_ARGUMENTS",
7078 "function definition argument '$arg' should also have an identifier name\n" . $herecurr);
7083 # check for function definitions
7084 if ($perl_version_ok &&
7086 $stat =~ /^.\s*(?:$Storage\s+)?$Type\s*($Ident)\s*$balanced_parens\s*{/s) {
7087 $context_function = $1;
7089 # check for multiline function definition with misplaced open brace
7091 my $cnt = statement_rawlines($stat);
7092 my $herectx = $here . "\n";
7093 for (my $n = 0; $n < $cnt; $n++) {
7094 my $rl = raw_line($linenr, $n);
7095 $herectx .= $rl . "\n";
7096 $ok = 1 if ($rl =~ /^[ \+]\{/);
7097 $ok = 1 if ($rl =~ /\{/ && $n == 0);
7098 last if $rl =~ /^[ \+].*\{/;
7102 "open brace '{' following function definitions go on the next line\n" . $herectx);
7106 # checks for new __setup's
7107 if ($rawline =~ /\b__setup\("([^"]*)"/) {
7110 if (!grep(/$name/, @setup_docs)) {
7111 CHK("UNDOCUMENTED_SETUP",
7112 "__setup appears un-documented -- check Documentation/admin-guide/kernel-parameters.txt\n" . $herecurr);
7116 # check for pointless casting of alloc functions
7117 if ($line =~ /\*\s*\)\s*$allocFunctions\b/) {
7118 WARN("UNNECESSARY_CASTS",
7119 "unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
7123 # p = alloc(sizeof(struct foo), ...) should be p = alloc(sizeof(*p), ...)
7124 if ($perl_version_ok &&
7125 $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k|v)[mz]alloc(?:_node)?)\s*\(\s*(sizeof\s*\(\s*struct\s+$Lval\s*\))/) {
7126 CHK("ALLOC_SIZEOF_STRUCT",
7127 "Prefer $3(sizeof(*$1)...) over $3($4...)\n" . $herecurr);
7130 # check for (kv|k)[mz]alloc with multiplies that could be kmalloc_array/kvmalloc_array/kvcalloc/kcalloc
7131 if ($perl_version_ok &&
7133 $stat =~ /^\+\s*($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k)[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)\s*,/) {
7137 my $newfunc = "kmalloc_array";
7138 $newfunc = "kvmalloc_array" if ($oldfunc eq "kvmalloc");
7139 $newfunc = "kvcalloc" if ($oldfunc eq "kvzalloc");
7140 $newfunc = "kcalloc" if ($oldfunc eq "kzalloc");
7143 if ($a1 =~ /^sizeof\s*\S/) {
7147 if ($r1 !~ /^sizeof\b/ && $r2 =~ /^sizeof\s*\S/ &&
7148 !($r1 =~ /^$Constant$/ || $r1 =~ /^[A-Z_][A-Z0-9_]*$/)) {
7149 my $cnt = statement_rawlines($stat);
7150 my $herectx = get_stat_here($linenr, $cnt, $here);
7152 if (WARN("ALLOC_WITH_MULTIPLY",
7153 "Prefer $newfunc over $oldfunc with multiply\n" . $herectx) &&
7156 $fixed[$fixlinenr] =~ s/\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*((?:kv|k)[mz]alloc)\s*\(\s*($FuncArg)\s*\*\s*($FuncArg)/$1 . ' = ' . "$newfunc(" . trim($r1) . ', ' . trim($r2)/e;
7161 # check for krealloc arg reuse
7162 if ($perl_version_ok &&
7163 $line =~ /\b($Lval)\s*\=\s*(?:$balanced_parens)?\s*krealloc\s*\(\s*($Lval)\s*,/ &&
7165 WARN("KREALLOC_ARG_REUSE",
7166 "Reusing the krealloc arg is almost always a bug\n" . $herecurr);
7169 # check for alloc argument mismatch
7170 if ($line =~ /\b((?:devm_)?(?:kcalloc|kmalloc_array))\s*\(\s*sizeof\b/) {
7171 WARN("ALLOC_ARRAY_ARGS",
7172 "$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
7175 # check for multiple semicolons
7176 if ($line =~ /;\s*;\s*$/) {
7177 if (WARN("ONE_SEMICOLON",
7178 "Statements terminations use 1 semicolon\n" . $herecurr) &&
7180 $fixed[$fixlinenr] =~ s/(\s*;\s*){2,}$/;/g;
7184 # check for #defines like: 1 << <digit> that could be BIT(digit), it is not exported to uapi
7185 if ($realfile !~ m@^include/uapi/@ &&
7186 $line =~ /#\s*define\s+\w+\s+\(?\s*1\s*([ulUL]*)\s*\<\<\s*(?:\d+|$Ident)\s*\)?/) {
7188 $ull = "_ULL" if (defined($1) && $1 =~ /ll/i);
7189 if (CHK("BIT_MACRO",
7190 "Prefer using the BIT$ull macro\n" . $herecurr) &&
7192 $fixed[$fixlinenr] =~ s/\(?\s*1\s*[ulUL]*\s*<<\s*(\d+|$Ident)\s*\)?/BIT${ull}($1)/;
7196 # check for IS_ENABLED() without CONFIG_<FOO> ($rawline for comments too)
7197 if ($rawline =~ /\bIS_ENABLED\s*\(\s*(\w+)\s*\)/ && $1 !~ /^${CONFIG_}/) {
7198 WARN("IS_ENABLED_CONFIG",
7199 "IS_ENABLED($1) is normally used as IS_ENABLED(${CONFIG_}$1)\n" . $herecurr);
7202 # check for #if defined CONFIG_<FOO> || defined CONFIG_<FOO>_MODULE
7203 if ($line =~ /^\+\s*#\s*if\s+defined(?:\s*\(?\s*|\s+)(${CONFIG_}[A-Z_]+)\s*\)?\s*\|\|\s*defined(?:\s*\(?\s*|\s+)\1_MODULE\s*\)?\s*$/) {
7205 if (WARN("PREFER_IS_ENABLED",
7206 "Prefer IS_ENABLED(<FOO>) to ${CONFIG_}<FOO> || ${CONFIG_}<FOO>_MODULE\n" . $herecurr) &&
7208 $fixed[$fixlinenr] = "\+#if IS_ENABLED($config)";
7212 # check for /* fallthrough */ like comment, prefer fallthrough;
7213 my @fallthroughs = (
7216 'lint -fallthrough[ \t]*',
7217 'intentional(?:ly)?[ \t]*fall(?:(?:s | |-)[Tt]|t)hr(?:ough|u|ew)',
7218 '(?:else,?\s*)?FALL(?:S | |-)?THR(?:OUGH|U|EW)[ \t.!]*(?:-[^\n\r]*)?',
7219 'Fall(?:(?:s | |-)[Tt]|t)hr(?:ough|u|ew)[ \t.!]*(?:-[^\n\r]*)?',
7220 'fall(?:s | |-)?thr(?:ough|u|ew)[ \t.!]*(?:-[^\n\r]*)?',
7222 if ($raw_comment ne '') {
7223 foreach my $ft (@fallthroughs) {
7224 if ($raw_comment =~ /$ft/) {
7225 my $msg_level = \&WARN;
7226 $msg_level = \&CHK if ($file);
7227 &{$msg_level}("PREFER_FALLTHROUGH",
7228 "Prefer 'fallthrough;' over fallthrough comment\n" . $herecurr);
7234 # check for switch/default statements without a break;
7235 if ($perl_version_ok &&
7237 $stat =~ /^\+[$;\s]*(?:case[$;\s]+\w+[$;\s]*:[$;\s]*|)*[$;\s]*\bdefault[$;\s]*:[$;\s]*;/g) {
7238 my $cnt = statement_rawlines($stat);
7239 my $herectx = get_stat_here($linenr, $cnt, $here);
7241 WARN("DEFAULT_NO_BREAK",
7242 "switch default: should use break\n" . $herectx);
7245 # check for gcc specific __FUNCTION__
7246 if ($line =~ /\b__FUNCTION__\b/) {
7247 if (WARN("USE_FUNC",
7248 "__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr) &&
7250 $fixed[$fixlinenr] =~ s/\b__FUNCTION__\b/__func__/g;
7254 # check for uses of __DATE__, __TIME__, __TIMESTAMP__
7255 while ($line =~ /\b(__(?:DATE|TIME|TIMESTAMP)__)\b/g) {
7257 "Use of the '$1' macro makes the build non-deterministic\n" . $herecurr);
7260 # check for use of yield()
7261 if ($line =~ /\byield\s*\(\s*\)/) {
7263 "Using yield() is generally wrong. See yield() kernel-doc (sched/core.c)\n" . $herecurr);
7266 # check for comparisons against true and false
7267 if ($line =~ /\+\s*(.*?)\b(true|false|$Lval)\s*(==|\!=)\s*(true|false|$Lval)\b(.*)$/i) {
7275 ($arg, $otype) = ($otype, $arg) if ($arg =~ /^(?:true|false)$/i);
7277 my $type = lc($otype);
7278 if ($type =~ /^(?:true|false)$/) {
7279 if (("$test" eq "==" && "$type" eq "true") ||
7280 ("$test" eq "!=" && "$type" eq "false")) {
7284 CHK("BOOL_COMPARISON",
7285 "Using comparison to $otype is error prone\n" . $herecurr);
7287 ## maybe suggesting a correct construct would better
7288 ## "Using comparison to $otype is error prone. Perhaps use '${lead}${op}${arg}${trail}'\n" . $herecurr);
7293 # check for semaphores initialized locked
7294 if ($line =~ /^.\s*sema_init.+,\W?0\W?\)/) {
7295 WARN("CONSIDER_COMPLETION",
7296 "consider using a completion\n" . $herecurr);
7299 # recommend kstrto* over simple_strto* and strict_strto*
7300 if ($line =~ /\b((simple|strict)_(strto(l|ll|ul|ull)))\s*\(/) {
7301 WARN("CONSIDER_KSTRTO",
7302 "$1 is obsolete, use k$3 instead\n" . $herecurr);
7305 # check for __initcall(), use device_initcall() explicitly or more appropriate function please
7306 if ($line =~ /^.\s*__initcall\s*\(/) {
7307 WARN("USE_DEVICE_INITCALL",
7308 "please use device_initcall() or more appropriate function instead of __initcall() (see include/linux/init.h)\n" . $herecurr);
7311 # check for spin_is_locked(), suggest lockdep instead
7312 if ($line =~ /\bspin_is_locked\(/) {
7314 "Where possible, use lockdep_assert_held instead of assertions based on spin_is_locked\n" . $herecurr);
7317 # check for deprecated apis
7318 if ($line =~ /\b($deprecated_apis_search)\b\s*\(/) {
7319 my $deprecated_api = $1;
7320 my $new_api = $deprecated_apis{$deprecated_api};
7321 WARN("DEPRECATED_API",
7322 "Deprecated use of '$deprecated_api', prefer '$new_api' instead\n" . $herecurr);
7325 # check for various structs that are normally const (ops, kgdb, device_tree)
7326 # and avoid what seem like struct definitions 'struct foo {'
7327 if (defined($const_structs) &&
7328 $line !~ /\bconst\b/ &&
7329 $line =~ /\bstruct\s+($const_structs)\b(?!\s*\{)/) {
7330 WARN("CONST_STRUCT",
7331 "struct $1 should normally be const\n" . $herecurr);
7334 # use of NR_CPUS is usually wrong
7335 # ignore definitions of NR_CPUS and usage to define arrays as likely right
7336 # ignore designated initializers using NR_CPUS
7337 if ($line =~ /\bNR_CPUS\b/ &&
7338 $line !~ /^.\s*\s*#\s*if\b.*\bNR_CPUS\b/ &&
7339 $line !~ /^.\s*\s*#\s*define\b.*\bNR_CPUS\b/ &&
7340 $line !~ /^.\s*$Declare\s.*\[[^\]]*NR_CPUS[^\]]*\]/ &&
7341 $line !~ /\[[^\]]*\.\.\.[^\]]*NR_CPUS[^\]]*\]/ &&
7342 $line !~ /\[[^\]]*NR_CPUS[^\]]*\.\.\.[^\]]*\]/ &&
7343 $line !~ /^.\s*\.\w+\s*=\s*.*\bNR_CPUS\b/)
7346 "usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . $herecurr);
7349 # Use of __ARCH_HAS_<FOO> or ARCH_HAVE_<BAR> is wrong.
7350 if ($line =~ /\+\s*#\s*define\s+((?:__)?ARCH_(?:HAS|HAVE)\w*)\b/) {
7351 ERROR("DEFINE_ARCH_HAS",
7352 "#define of '$1' is wrong - use Kconfig variables or standard guards instead\n" . $herecurr);
7355 # likely/unlikely comparisons similar to "(likely(foo) > 0)"
7356 if ($perl_version_ok &&
7357 $line =~ /\b((?:un)?likely)\s*\(\s*$FuncArg\s*\)\s*$Compare/) {
7358 WARN("LIKELY_MISUSE",
7359 "Using $1 should generally have parentheses around the comparison\n" . $herecurr);
7362 # return sysfs_emit(foo, fmt, ...) fmt without newline
7363 if ($line =~ /\breturn\s+sysfs_emit\s*\(\s*$FuncArg\s*,\s*($String)/ &&
7364 substr($rawline, $-[6], $+[6] - $-[6]) !~ /\\n"$/) {
7365 my $offset = $+[6] - 1;
7366 if (WARN("SYSFS_EMIT",
7367 "return sysfs_emit(...) formats should include a terminating newline\n" . $herecurr) &&
7369 substr($fixed[$fixlinenr], $offset, 0) = '\\n';
7373 # nested likely/unlikely calls
7374 if ($line =~ /\b(?:(?:un)?likely)\s*\(\s*!?\s*(IS_ERR(?:_OR_NULL|_VALUE)?|WARN)/) {
7375 WARN("LIKELY_MISUSE",
7376 "nested (un)?likely() calls, $1 already uses unlikely() internally\n" . $herecurr);
7379 # whine mightly about in_atomic
7380 if ($line =~ /\bin_atomic\s*\(/) {
7381 if ($realfile =~ m@^drivers/@) {
7383 "do not use in_atomic in drivers\n" . $herecurr);
7384 } elsif ($realfile !~ m@^kernel/@) {
7386 "use of in_atomic() is incorrect outside core kernel code\n" . $herecurr);
7390 # check for lockdep_set_novalidate_class
7391 if ($line =~ /^.\s*lockdep_set_novalidate_class\s*\(/ ||
7392 $line =~ /__lockdep_no_validate__\s*\)/ ) {
7393 if ($realfile !~ m@^kernel/lockdep@ &&
7394 $realfile !~ m@^include/linux/lockdep@ &&
7395 $realfile !~ m@^drivers/base/core@) {
7397 "lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr);
7401 if ($line =~ /debugfs_create_\w+.*\b$mode_perms_world_writable\b/ ||
7402 $line =~ /DEVICE_ATTR.*\b$mode_perms_world_writable\b/) {
7403 WARN("EXPORTED_WORLD_WRITABLE",
7404 "Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
7407 # check for DEVICE_ATTR uses that could be DEVICE_ATTR_<FOO>
7408 # and whether or not function naming is typical and if
7409 # DEVICE_ATTR permissions uses are unusual too
7410 if ($perl_version_ok &&
7412 $stat =~ /\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?\s*(\s*(?:${multi_mode_perms_string_search}|0[0-7]{3,3})\s*)\s*\)?\s*,\s*(\w+)\s*,\s*(\w+)\s*\)/) {
7417 my $octal_perms = perms_to_octal($perms);
7418 if ($show =~ /^${var}_show$/ &&
7419 $store =~ /^${var}_store$/ &&
7420 $octal_perms eq "0644") {
7421 if (WARN("DEVICE_ATTR_RW",
7422 "Use DEVICE_ATTR_RW\n" . $herecurr) &&
7424 $fixed[$fixlinenr] =~ s/\bDEVICE_ATTR\s*\(\s*$var\s*,\s*\Q$perms\E\s*,\s*$show\s*,\s*$store\s*\)/DEVICE_ATTR_RW(${var})/;
7426 } elsif ($show =~ /^${var}_show$/ &&
7427 $store =~ /^NULL$/ &&
7428 $octal_perms eq "0444") {
7429 if (WARN("DEVICE_ATTR_RO",
7430 "Use DEVICE_ATTR_RO\n" . $herecurr) &&
7432 $fixed[$fixlinenr] =~ s/\bDEVICE_ATTR\s*\(\s*$var\s*,\s*\Q$perms\E\s*,\s*$show\s*,\s*NULL\s*\)/DEVICE_ATTR_RO(${var})/;
7434 } elsif ($show =~ /^NULL$/ &&
7435 $store =~ /^${var}_store$/ &&
7436 $octal_perms eq "0200") {
7437 if (WARN("DEVICE_ATTR_WO",
7438 "Use DEVICE_ATTR_WO\n" . $herecurr) &&
7440 $fixed[$fixlinenr] =~ s/\bDEVICE_ATTR\s*\(\s*$var\s*,\s*\Q$perms\E\s*,\s*NULL\s*,\s*$store\s*\)/DEVICE_ATTR_WO(${var})/;
7442 } elsif ($octal_perms eq "0644" ||
7443 $octal_perms eq "0444" ||
7444 $octal_perms eq "0200") {
7445 my $newshow = "$show";
7446 $newshow = "${var}_show" if ($show ne "NULL" && $show ne "${var}_show");
7447 my $newstore = $store;
7448 $newstore = "${var}_store" if ($store ne "NULL" && $store ne "${var}_store");
7450 if ($show ne $newshow) {
7451 $rename .= " '$show' to '$newshow'";
7453 if ($store ne $newstore) {
7454 $rename .= " '$store' to '$newstore'";
7456 WARN("DEVICE_ATTR_FUNCTIONS",
7457 "Consider renaming function(s)$rename\n" . $herecurr);
7459 WARN("DEVICE_ATTR_PERMS",
7460 "DEVICE_ATTR unusual permissions '$perms' used\n" . $herecurr);
7464 # Mode permission misuses where it seems decimal should be octal
7465 # This uses a shortcut match to avoid unnecessary uses of a slow foreach loop
7466 # o Ignore module_param*(...) uses with a decimal 0 permission as that has a
7467 # specific definition of not visible in sysfs.
7468 # o Ignore proc_create*(...) uses with a decimal 0 permission as that means
7469 # use the default permissions
7470 if ($perl_version_ok &&
7472 $line =~ /$mode_perms_search/) {
7473 foreach my $entry (@mode_permission_funcs) {
7474 my $func = $entry->[0];
7475 my $arg_pos = $entry->[1];
7477 my $lc = $stat =~ tr@\n@@;
7478 $lc = $lc + $linenr;
7479 my $stat_real = get_stat_real($linenr, $lc);
7484 $skip_args = "(?:\\s*$FuncArg\\s*,\\s*){$arg_pos,$arg_pos}";
7486 my $test = "\\b$func\\s*\\(${skip_args}($FuncArg(?:\\|\\s*$FuncArg)*)\\s*[,\\)]";
7487 if ($stat =~ /$test/) {
7489 $val = $6 if ($skip_args ne "");
7490 if (!($func =~ /^(?:module_param|proc_create)/ && $val eq "0") &&
7491 (($val =~ /^$Int$/ && $val !~ /^$Octal$/) ||
7492 ($val =~ /^$Octal$/ && length($val) ne 4))) {
7493 ERROR("NON_OCTAL_PERMISSIONS",
7494 "Use 4 digit octal (0777) not decimal permissions\n" . "$here\n" . $stat_real);
7496 if ($val =~ /^$Octal$/ && (oct($val) & 02)) {
7497 ERROR("EXPORTED_WORLD_WRITABLE",
7498 "Exporting writable files is usually an error. Consider more restrictive permissions.\n" . "$here\n" . $stat_real);
7504 # check for uses of S_<PERMS> that could be octal for readability
7505 while ($line =~ m{\b($multi_mode_perms_string_search)\b}g) {
7507 my $octal = perms_to_octal($oval);
7508 if (WARN("SYMBOLIC_PERMS",
7509 "Symbolic permissions '$oval' are not preferred. Consider using octal permissions '$octal'.\n" . $herecurr) &&
7511 $fixed[$fixlinenr] =~ s/\Q$oval\E/$octal/;
7515 # validate content of MODULE_LICENSE against list from include/linux/module.h
7516 if ($line =~ /\bMODULE_LICENSE\s*\(\s*($String)\s*\)/) {
7517 my $extracted_string = get_quoted_string($line, $rawline);
7518 my $valid_licenses = qr{
7521 GPL\ and\ additional\ rights|
7527 if ($extracted_string !~ /^"(?:$valid_licenses)"$/x) {
7528 WARN("MODULE_LICENSE",
7529 "unknown module license " . $extracted_string . "\n" . $herecurr);
7531 if (!$file && $extracted_string eq '"GPL v2"') {
7532 if (WARN("MODULE_LICENSE",
7533 "Prefer \"GPL\" over \"GPL v2\" - see commit bf7fbeeae6db (\"module: Cure the MODULE_LICENSE \"GPL\" vs. \"GPL v2\" bogosity\")\n" . $herecurr) &&
7535 $fixed[$fixlinenr] =~ s/\bMODULE_LICENSE\s*\(\s*"GPL v2"\s*\)/MODULE_LICENSE("GPL")/;
7540 # check for sysctl duplicate constants
7541 if ($line =~ /\.extra[12]\s*=\s*&(zero|one|int_max)\b/) {
7542 WARN("DUPLICATED_SYSCTL_CONST",
7543 "duplicated sysctl range checking value '$1', consider using the shared one in include/linux/sysctl.h\n" . $herecurr);
7547 # If we have no input at all, then there is nothing to report on
7548 # so just keep quiet.
7549 if ($#rawlines == -1) {
7553 # In mailback mode only produce a report in the negative, for
7554 # things that appear to be patches.
7555 if ($mailback && ($clean == 1 || !$is_patch)) {
7559 # This is not a patch, and we are in 'no-patch' mode so
7561 if (!$chk_patch && !$is_patch) {
7565 if (!$is_patch && $filename !~ /cover-letter\.patch$/) {
7566 ERROR("NOT_UNIFIED_DIFF",
7567 "Does not appear to be a unified-diff format patch\n");
7569 if ($is_patch && $has_commit_log && $chk_signoff) {
7570 if ($signoff == 0) {
7571 ERROR("MISSING_SIGN_OFF",
7572 "Missing Signed-off-by: line(s)\n");
7573 } elsif ($authorsignoff != 1) {
7574 # authorsignoff values:
7575 # 0 -> missing sign off
7576 # 1 -> sign off identical
7577 # 2 -> names and addresses match, comments mismatch
7578 # 3 -> addresses match, names different
7579 # 4 -> names match, addresses different
7580 # 5 -> names match, addresses excluding subaddress details (refer RFC 5233) match
7582 my $sob_msg = "'From: $author' != 'Signed-off-by: $author_sob'";
7584 if ($authorsignoff == 0) {
7585 ERROR("NO_AUTHOR_SIGN_OFF",
7586 "Missing Signed-off-by: line by nominal patch author '$author'\n");
7587 } elsif ($authorsignoff == 2) {
7588 CHK("FROM_SIGN_OFF_MISMATCH",
7589 "From:/Signed-off-by: email comments mismatch: $sob_msg\n");
7590 } elsif ($authorsignoff == 3) {
7591 WARN("FROM_SIGN_OFF_MISMATCH",
7592 "From:/Signed-off-by: email name mismatch: $sob_msg\n");
7593 } elsif ($authorsignoff == 4) {
7594 WARN("FROM_SIGN_OFF_MISMATCH",
7595 "From:/Signed-off-by: email address mismatch: $sob_msg\n");
7596 } elsif ($authorsignoff == 5) {
7597 WARN("FROM_SIGN_OFF_MISMATCH",
7598 "From:/Signed-off-by: email subaddress mismatch: $sob_msg\n");
7603 print report_dump();
7604 if ($summary && !($clean == 1 && $quiet == 1)) {
7605 print "$filename " if ($summary_file);
7606 print "total: $cnt_error errors, $cnt_warn warnings, " .
7607 (($check)? "$cnt_chk checks, " : "") .
7608 "$cnt_lines lines checked\n";
7612 # If there were any defects found and not already fixing them
7613 if (!$clean and !$fix) {
7616 NOTE: For some of the reported defects, checkpatch may be able to
7617 mechanically convert to the typical style using --fix or --fix-inplace.
7620 # If there were whitespace errors which cleanpatch can fix
7621 # then suggest that.
7622 if ($rpt_cleaners) {
7626 NOTE: Whitespace errors detected.
7627 You may wish to use scripts/cleanpatch or scripts/cleanfile
7632 if ($clean == 0 && $fix &&
7633 ("@rawlines" ne "@fixed" ||
7634 $#fixed_inserted >= 0 || $#fixed_deleted >= 0)) {
7635 my $newfile = $filename;
7636 $newfile .= ".EXPERIMENTAL-checkpatch-fixes" if (!$fix_inplace);
7640 @fixed = fix_inserted_deleted_lines(\@fixed, \@fixed_inserted, \@fixed_deleted);
7642 open($f, '>', $newfile)
7643 or die "$P: Can't open $newfile for write\n";
7644 foreach my $fixed_line (@fixed) {
7647 if ($linecount > 3) {
7648 $fixed_line =~ s/^\+//;
7649 print $f $fixed_line . "\n";
7652 print $f $fixed_line . "\n";
7660 Wrote EXPERIMENTAL --fix correction(s) to '$newfile'
7662 Do _NOT_ trust the results written to this file.
7663 Do _NOT_ submit these changes without inspecting them for correctness.
7665 This EXPERIMENTAL file is simply a convenience to help rewrite patches.
7666 No warranties, expressed or implied...
7674 print "$vname has no obvious style problems and is ready for submission.\n";
7676 print "$vname has style problems, please review.\n";