1#!/usr/bin/perl -w 2# (c) 2001, Dave Jones. (the file handling bit) 3# (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit) 4# (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite) 5# (c) 2008-2010 Andy Whitcroft <apw@canonical.com> 6# Licensed under the terms of the GNU GPL License version 2 7 8use strict; 9 10my $P = $0; 11$P =~ s@.*/@@g; 12 13my $V = '0.31'; 14 15use Getopt::Long qw(:config no_auto_abbrev); 16 17my $quiet = 0; 18my $tree = 1; 19my $chk_signoff = 1; 20my $chk_patch = 1; 21my $tst_only; 22my $emacs = 0; 23my $terse = 0; 24my $file = 0; 25my $check = 0; 26my $summary = 1; 27my $mailback = 0; 28my $summary_file = 0; 29my $root; 30my %debug; 31my $help = 0; 32 33sub help { 34 my ($exitcode) = @_; 35 36 print << "EOM"; 37Usage: $P [OPTION]... [FILE]... 38Version: $V 39 40Options: 41 -q, --quiet quiet 42 --no-tree run without a kernel tree 43 --no-signoff do not check for 'Signed-off-by' line 44 --patch treat FILE as patchfile (default) 45 --emacs emacs compile window format 46 --terse one line per report 47 -f, --file treat FILE as regular source file 48 --subjective, --strict enable more subjective tests 49 --root=PATH PATH to the kernel tree root 50 --no-summary suppress the per-file summary 51 --mailback only produce a report in case of warnings/errors 52 --summary-file include the filename in summary 53 --debug KEY=[0|1] turn on/off debugging of KEY, where KEY is one of 54 'values', 'possible', 'type', and 'attr' (default 55 is all off) 56 --test-only=WORD report only warnings/errors containing WORD 57 literally 58 -h, --help, --version display this help and exit 59 60When FILE is - read standard input. 61EOM 62 63 exit($exitcode); 64} 65 66GetOptions( 67 'q|quiet+' => \$quiet, 68 'tree!' => \$tree, 69 'signoff!' => \$chk_signoff, 70 'patch!' => \$chk_patch, 71 'emacs!' => \$emacs, 72 'terse!' => \$terse, 73 'f|file!' => \$file, 74 'subjective!' => \$check, 75 'strict!' => \$check, 76 'root=s' => \$root, 77 'summary!' => \$summary, 78 'mailback!' => \$mailback, 79 'summary-file!' => \$summary_file, 80 81 'debug=s' => \%debug, 82 'test-only=s' => \$tst_only, 83 'h|help' => \$help, 84 'version' => \$help 85) or help(1); 86 87help(0) if ($help); 88 89my $exit = 0; 90 91if ($#ARGV < 0) { 92 print "$P: no input files\n"; 93 exit(1); 94} 95 96my $dbg_values = 0; 97my $dbg_possible = 0; 98my $dbg_type = 0; 99my $dbg_attr = 0; 100my $dbg_adv_dcs = 0; 101my $dbg_adv_checking = 0; 102my $dbg_adv_apw = 0; 103for my $key (keys %debug) { 104 ## no critic 105 eval "\${dbg_$key} = '$debug{$key}';"; 106 die "$@" if ($@); 107} 108 109my $rpt_cleaners = 0; 110 111if ($terse) { 112 $emacs = 1; 113 $quiet++; 114} 115 116if ($tree) { 117 if (defined $root) { 118 if (!top_of_kernel_tree($root)) { 119 die "$P: $root: --root does not point at a valid tree\n"; 120 } 121 } else { 122 if (top_of_kernel_tree('.')) { 123 $root = '.'; 124 } elsif ($0 =~ m@(.*)/scripts/[^/]*$@ && 125 top_of_kernel_tree($1)) { 126 $root = $1; 127 } 128 } 129 130 if (!defined $root) { 131 print "Must be run from the top-level dir. of a kernel tree\n"; 132 exit(2); 133 } 134} 135 136my $emitted_corrupt = 0; 137 138our $Ident = qr{ 139 [A-Za-z_][A-Za-z\d_]* 140 (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)* 141 }x; 142our $Storage = qr{extern|static|asmlinkage}; 143our $Sparse = qr{ 144 __force 145 }x; 146 147# Notes to $Attribute: 148our $Attribute = qr{ 149 const| 150 volatile| 151 QEMU_NORETURN| 152 QEMU_WARN_UNUSED_RESULT| 153 QEMU_SENTINEL| 154 QEMU_ARTIFICIAL| 155 QEMU_PACKED| 156 GCC_FMT_ATTR 157 }x; 158our $Modifier; 159our $Inline = qr{inline}; 160our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]}; 161our $Lval = qr{$Ident(?:$Member)*}; 162 163our $Constant = qr{(?:[0-9]+|0x[0-9a-fA-F]+)[UL]*}; 164our $Assignment = qr{(?:\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=)}; 165our $Compare = qr{<=|>=|==|!=|<|>}; 166our $Operators = qr{ 167 <=|>=|==|!=| 168 =>|->|<<|>>|<|>|!|~| 169 &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|% 170 }x; 171 172our $NonptrType; 173our $Type; 174our $Declare; 175 176our $UTF8 = qr { 177 [\x09\x0A\x0D\x20-\x7E] # ASCII 178 | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte 179 | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs 180 | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte 181 | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates 182 | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 183 | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15 184 | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16 185}x; 186 187# There are still some false positives, but this catches most 188# common cases. 189our $typeTypedefs = qr{(?x: 190 [A-Z][A-Z\d_]*[a-z][A-Za-z\d_]* # camelcase 191 | [A-Z][A-Z\d_]*AIOCB # all uppercase 192 | [A-Z][A-Z\d_]*CPU # all uppercase 193 | QEMUBH # all uppercase 194)}; 195 196our @typeList = ( 197 qr{void}, 198 qr{(?:unsigned\s+)?char}, 199 qr{(?:unsigned\s+)?short}, 200 qr{(?:unsigned\s+)?int}, 201 qr{(?:unsigned\s+)?long}, 202 qr{(?:unsigned\s+)?long\s+int}, 203 qr{(?:unsigned\s+)?long\s+long}, 204 qr{(?:unsigned\s+)?long\s+long\s+int}, 205 qr{unsigned}, 206 qr{float}, 207 qr{double}, 208 qr{bool}, 209 qr{struct\s+$Ident}, 210 qr{union\s+$Ident}, 211 qr{enum\s+$Ident}, 212 qr{${Ident}_t}, 213 qr{${Ident}_handler}, 214 qr{${Ident}_handler_fn}, 215 qr{target_(?:u)?long}, 216); 217 218# This can be modified by sub possible. Since it can be empty, be careful 219# about regexes that always match, because they can cause infinite loops. 220our @modifierList = ( 221); 222 223sub build_types { 224 my $all = "(?x: \n" . join("|\n ", @typeList) . "\n)"; 225 if (@modifierList > 0) { 226 my $mods = "(?x: \n" . join("|\n ", @modifierList) . "\n)"; 227 $Modifier = qr{(?:$Attribute|$Sparse|$mods)}; 228 } else { 229 $Modifier = qr{(?:$Attribute|$Sparse)}; 230 } 231 $NonptrType = qr{ 232 (?:$Modifier\s+|const\s+)* 233 (?: 234 (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)| 235 (?:$typeTypedefs\b)| 236 (?:${all}\b) 237 ) 238 (?:\s+$Modifier|\s+const)* 239 }x; 240 $Type = qr{ 241 $NonptrType 242 (?:[\s\*]+\s*const|[\s\*]+|(?:\s*\[\s*\])+)? 243 (?:\s+$Inline|\s+$Modifier)* 244 }x; 245 $Declare = qr{(?:$Storage\s+)?$Type}; 246} 247build_types(); 248 249$chk_signoff = 0 if ($file); 250 251my @rawlines = (); 252my @lines = (); 253my $vname; 254for my $filename (@ARGV) { 255 my $FILE; 256 if ($file) { 257 open($FILE, '-|', "diff -u /dev/null $filename") || 258 die "$P: $filename: diff failed - $!\n"; 259 } elsif ($filename eq '-') { 260 open($FILE, '<&STDIN'); 261 } else { 262 open($FILE, '<', "$filename") || 263 die "$P: $filename: open failed - $!\n"; 264 } 265 if ($filename eq '-') { 266 $vname = 'Your patch'; 267 } else { 268 $vname = $filename; 269 } 270 while (<$FILE>) { 271 chomp; 272 push(@rawlines, $_); 273 } 274 close($FILE); 275 if (!process($filename)) { 276 $exit = 1; 277 } 278 @rawlines = (); 279 @lines = (); 280} 281 282exit($exit); 283 284sub top_of_kernel_tree { 285 my ($root) = @_; 286 287 my @tree_check = ( 288 "COPYING", "MAINTAINERS", "Makefile", 289 "README", "docs", "VERSION", 290 "vl.c" 291 ); 292 293 foreach my $check (@tree_check) { 294 if (! -e $root . '/' . $check) { 295 return 0; 296 } 297 } 298 return 1; 299} 300 301sub expand_tabs { 302 my ($str) = @_; 303 304 my $res = ''; 305 my $n = 0; 306 for my $c (split(//, $str)) { 307 if ($c eq "\t") { 308 $res .= ' '; 309 $n++; 310 for (; ($n % 8) != 0; $n++) { 311 $res .= ' '; 312 } 313 next; 314 } 315 $res .= $c; 316 $n++; 317 } 318 319 return $res; 320} 321sub copy_spacing { 322 (my $res = shift) =~ tr/\t/ /c; 323 return $res; 324} 325 326sub line_stats { 327 my ($line) = @_; 328 329 # Drop the diff line leader and expand tabs 330 $line =~ s/^.//; 331 $line = expand_tabs($line); 332 333 # Pick the indent from the front of the line. 334 my ($white) = ($line =~ /^(\s*)/); 335 336 return (length($line), length($white)); 337} 338 339my $sanitise_quote = ''; 340 341sub sanitise_line_reset { 342 my ($in_comment) = @_; 343 344 if ($in_comment) { 345 $sanitise_quote = '*/'; 346 } else { 347 $sanitise_quote = ''; 348 } 349} 350sub sanitise_line { 351 my ($line) = @_; 352 353 my $res = ''; 354 my $l = ''; 355 356 my $qlen = 0; 357 my $off = 0; 358 my $c; 359 360 # Always copy over the diff marker. 361 $res = substr($line, 0, 1); 362 363 for ($off = 1; $off < length($line); $off++) { 364 $c = substr($line, $off, 1); 365 366 # Comments we are wacking completely including the begin 367 # and end, all to $;. 368 if ($sanitise_quote eq '' && substr($line, $off, 2) eq '/*') { 369 $sanitise_quote = '*/'; 370 371 substr($res, $off, 2, "$;$;"); 372 $off++; 373 next; 374 } 375 if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') { 376 $sanitise_quote = ''; 377 substr($res, $off, 2, "$;$;"); 378 $off++; 379 next; 380 } 381 if ($sanitise_quote eq '' && substr($line, $off, 2) eq '//') { 382 $sanitise_quote = '//'; 383 384 substr($res, $off, 2, $sanitise_quote); 385 $off++; 386 next; 387 } 388 389 # A \ in a string means ignore the next character. 390 if (($sanitise_quote eq "'" || $sanitise_quote eq '"') && 391 $c eq "\\") { 392 substr($res, $off, 2, 'XX'); 393 $off++; 394 next; 395 } 396 # Regular quotes. 397 if ($c eq "'" || $c eq '"') { 398 if ($sanitise_quote eq '') { 399 $sanitise_quote = $c; 400 401 substr($res, $off, 1, $c); 402 next; 403 } elsif ($sanitise_quote eq $c) { 404 $sanitise_quote = ''; 405 } 406 } 407 408 #print "c<$c> SQ<$sanitise_quote>\n"; 409 if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") { 410 substr($res, $off, 1, $;); 411 } elsif ($off != 0 && $sanitise_quote eq '//' && $c ne "\t") { 412 substr($res, $off, 1, $;); 413 } elsif ($off != 0 && $sanitise_quote && $c ne "\t") { 414 substr($res, $off, 1, 'X'); 415 } else { 416 substr($res, $off, 1, $c); 417 } 418 } 419 420 if ($sanitise_quote eq '//') { 421 $sanitise_quote = ''; 422 } 423 424 # The pathname on a #include may be surrounded by '<' and '>'. 425 if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) { 426 my $clean = 'X' x length($1); 427 $res =~ s@\<.*\>@<$clean>@; 428 429 # The whole of a #error is a string. 430 } elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) { 431 my $clean = 'X' x length($1); 432 $res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@; 433 } 434 435 return $res; 436} 437 438sub ctx_statement_block { 439 my ($linenr, $remain, $off) = @_; 440 my $line = $linenr - 1; 441 my $blk = ''; 442 my $soff = $off; 443 my $coff = $off - 1; 444 my $coff_set = 0; 445 446 my $loff = 0; 447 448 my $type = ''; 449 my $level = 0; 450 my @stack = (); 451 my $p; 452 my $c; 453 my $len = 0; 454 455 my $remainder; 456 while (1) { 457 @stack = (['', 0]) if ($#stack == -1); 458 459 #warn "CSB: blk<$blk> remain<$remain>\n"; 460 # If we are about to drop off the end, pull in more 461 # context. 462 if ($off >= $len) { 463 for (; $remain > 0; $line++) { 464 last if (!defined $lines[$line]); 465 next if ($lines[$line] =~ /^-/); 466 $remain--; 467 $loff = $len; 468 $blk .= $lines[$line] . "\n"; 469 $len = length($blk); 470 $line++; 471 last; 472 } 473 # Bail if there is no further context. 474 #warn "CSB: blk<$blk> off<$off> len<$len>\n"; 475 if ($off >= $len) { 476 last; 477 } 478 } 479 $p = $c; 480 $c = substr($blk, $off, 1); 481 $remainder = substr($blk, $off); 482 483 #warn "CSB: c<$c> type<$type> level<$level> remainder<$remainder> coff_set<$coff_set>\n"; 484 485 # Handle nested #if/#else. 486 if ($remainder =~ /^#\s*(?:ifndef|ifdef|if)\s/) { 487 push(@stack, [ $type, $level ]); 488 } elsif ($remainder =~ /^#\s*(?:else|elif)\b/) { 489 ($type, $level) = @{$stack[$#stack - 1]}; 490 } elsif ($remainder =~ /^#\s*endif\b/) { 491 ($type, $level) = @{pop(@stack)}; 492 } 493 494 # Statement ends at the ';' or a close '}' at the 495 # outermost level. 496 if ($level == 0 && $c eq ';') { 497 last; 498 } 499 500 # An else is really a conditional as long as its not else if 501 if ($level == 0 && $coff_set == 0 && 502 (!defined($p) || $p =~ /(?:\s|\}|\+)/) && 503 $remainder =~ /^(else)(?:\s|{)/ && 504 $remainder !~ /^else\s+if\b/) { 505 $coff = $off + length($1) - 1; 506 $coff_set = 1; 507 #warn "CSB: mark coff<$coff> soff<$soff> 1<$1>\n"; 508 #warn "[" . substr($blk, $soff, $coff - $soff + 1) . "]\n"; 509 } 510 511 if (($type eq '' || $type eq '(') && $c eq '(') { 512 $level++; 513 $type = '('; 514 } 515 if ($type eq '(' && $c eq ')') { 516 $level--; 517 $type = ($level != 0)? '(' : ''; 518 519 if ($level == 0 && $coff < $soff) { 520 $coff = $off; 521 $coff_set = 1; 522 #warn "CSB: mark coff<$coff>\n"; 523 } 524 } 525 if (($type eq '' || $type eq '{') && $c eq '{') { 526 $level++; 527 $type = '{'; 528 } 529 if ($type eq '{' && $c eq '}') { 530 $level--; 531 $type = ($level != 0)? '{' : ''; 532 533 if ($level == 0) { 534 if (substr($blk, $off + 1, 1) eq ';') { 535 $off++; 536 } 537 last; 538 } 539 } 540 $off++; 541 } 542 # We are truly at the end, so shuffle to the next line. 543 if ($off == $len) { 544 $loff = $len + 1; 545 $line++; 546 $remain--; 547 } 548 549 my $statement = substr($blk, $soff, $off - $soff + 1); 550 my $condition = substr($blk, $soff, $coff - $soff + 1); 551 552 #warn "STATEMENT<$statement>\n"; 553 #warn "CONDITION<$condition>\n"; 554 555 #print "coff<$coff> soff<$off> loff<$loff>\n"; 556 557 return ($statement, $condition, 558 $line, $remain + 1, $off - $loff + 1, $level); 559} 560 561sub statement_lines { 562 my ($stmt) = @_; 563 564 # Strip the diff line prefixes and rip blank lines at start and end. 565 $stmt =~ s/(^|\n)./$1/g; 566 $stmt =~ s/^\s*//; 567 $stmt =~ s/\s*$//; 568 569 my @stmt_lines = ($stmt =~ /\n/g); 570 571 return $#stmt_lines + 2; 572} 573 574sub statement_rawlines { 575 my ($stmt) = @_; 576 577 my @stmt_lines = ($stmt =~ /\n/g); 578 579 return $#stmt_lines + 2; 580} 581 582sub statement_block_size { 583 my ($stmt) = @_; 584 585 $stmt =~ s/(^|\n)./$1/g; 586 $stmt =~ s/^\s*\{//; 587 $stmt =~ s/}\s*$//; 588 $stmt =~ s/^\s*//; 589 $stmt =~ s/\s*$//; 590 591 my @stmt_lines = ($stmt =~ /\n/g); 592 my @stmt_statements = ($stmt =~ /;/g); 593 594 my $stmt_lines = $#stmt_lines + 2; 595 my $stmt_statements = $#stmt_statements + 1; 596 597 if ($stmt_lines > $stmt_statements) { 598 return $stmt_lines; 599 } else { 600 return $stmt_statements; 601 } 602} 603 604sub ctx_statement_full { 605 my ($linenr, $remain, $off) = @_; 606 my ($statement, $condition, $level); 607 608 my (@chunks); 609 610 # Grab the first conditional/block pair. 611 ($statement, $condition, $linenr, $remain, $off, $level) = 612 ctx_statement_block($linenr, $remain, $off); 613 #print "F: c<$condition> s<$statement> remain<$remain>\n"; 614 push(@chunks, [ $condition, $statement ]); 615 if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) { 616 return ($level, $linenr, @chunks); 617 } 618 619 # Pull in the following conditional/block pairs and see if they 620 # could continue the statement. 621 for (;;) { 622 ($statement, $condition, $linenr, $remain, $off, $level) = 623 ctx_statement_block($linenr, $remain, $off); 624 #print "C: c<$condition> s<$statement> remain<$remain>\n"; 625 last if (!($remain > 0 && $condition =~ /^(?:\s*\n[+-])*\s*(?:else|do)\b/s)); 626 #print "C: push\n"; 627 push(@chunks, [ $condition, $statement ]); 628 } 629 630 return ($level, $linenr, @chunks); 631} 632 633sub ctx_block_get { 634 my ($linenr, $remain, $outer, $open, $close, $off) = @_; 635 my $line; 636 my $start = $linenr - 1; 637 my $blk = ''; 638 my @o; 639 my @c; 640 my @res = (); 641 642 my $level = 0; 643 my @stack = ($level); 644 for ($line = $start; $remain > 0; $line++) { 645 next if ($rawlines[$line] =~ /^-/); 646 $remain--; 647 648 $blk .= $rawlines[$line]; 649 650 # Handle nested #if/#else. 651 if ($lines[$line] =~ /^.\s*#\s*(?:ifndef|ifdef|if)\s/) { 652 push(@stack, $level); 653 } elsif ($lines[$line] =~ /^.\s*#\s*(?:else|elif)\b/) { 654 $level = $stack[$#stack - 1]; 655 } elsif ($lines[$line] =~ /^.\s*#\s*endif\b/) { 656 $level = pop(@stack); 657 } 658 659 foreach my $c (split(//, $lines[$line])) { 660 ##print "C<$c>L<$level><$open$close>O<$off>\n"; 661 if ($off > 0) { 662 $off--; 663 next; 664 } 665 666 if ($c eq $close && $level > 0) { 667 $level--; 668 last if ($level == 0); 669 } elsif ($c eq $open) { 670 $level++; 671 } 672 } 673 674 if (!$outer || $level <= 1) { 675 push(@res, $rawlines[$line]); 676 } 677 678 last if ($level == 0); 679 } 680 681 return ($level, @res); 682} 683sub ctx_block_outer { 684 my ($linenr, $remain) = @_; 685 686 my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0); 687 return @r; 688} 689sub ctx_block { 690 my ($linenr, $remain) = @_; 691 692 my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0); 693 return @r; 694} 695sub ctx_statement { 696 my ($linenr, $remain, $off) = @_; 697 698 my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off); 699 return @r; 700} 701sub ctx_block_level { 702 my ($linenr, $remain) = @_; 703 704 return ctx_block_get($linenr, $remain, 0, '{', '}', 0); 705} 706sub ctx_statement_level { 707 my ($linenr, $remain, $off) = @_; 708 709 return ctx_block_get($linenr, $remain, 0, '(', ')', $off); 710} 711 712sub ctx_locate_comment { 713 my ($first_line, $end_line) = @_; 714 715 # Catch a comment on the end of the line itself. 716 my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@); 717 return $current_comment if (defined $current_comment); 718 719 # Look through the context and try and figure out if there is a 720 # comment. 721 my $in_comment = 0; 722 $current_comment = ''; 723 for (my $linenr = $first_line; $linenr < $end_line; $linenr++) { 724 my $line = $rawlines[$linenr - 1]; 725 #warn " $line\n"; 726 if ($linenr == $first_line and $line =~ m@^.\s*\*@) { 727 $in_comment = 1; 728 } 729 if ($line =~ m@/\*@) { 730 $in_comment = 1; 731 } 732 if (!$in_comment && $current_comment ne '') { 733 $current_comment = ''; 734 } 735 $current_comment .= $line . "\n" if ($in_comment); 736 if ($line =~ m@\*/@) { 737 $in_comment = 0; 738 } 739 } 740 741 chomp($current_comment); 742 return($current_comment); 743} 744sub ctx_has_comment { 745 my ($first_line, $end_line) = @_; 746 my $cmt = ctx_locate_comment($first_line, $end_line); 747 748 ##print "LINE: $rawlines[$end_line - 1 ]\n"; 749 ##print "CMMT: $cmt\n"; 750 751 return ($cmt ne ''); 752} 753 754sub raw_line { 755 my ($linenr, $cnt) = @_; 756 757 my $offset = $linenr - 1; 758 $cnt++; 759 760 my $line; 761 while ($cnt) { 762 $line = $rawlines[$offset++]; 763 next if (defined($line) && $line =~ /^-/); 764 $cnt--; 765 } 766 767 return $line; 768} 769 770sub cat_vet { 771 my ($vet) = @_; 772 my ($res, $coded); 773 774 $res = ''; 775 while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) { 776 $res .= $1; 777 if ($2 ne '') { 778 $coded = sprintf("^%c", unpack('C', $2) + 64); 779 $res .= $coded; 780 } 781 } 782 $res =~ s/$/\$/; 783 784 return $res; 785} 786 787my $av_preprocessor = 0; 788my $av_pending; 789my @av_paren_type; 790my $av_pend_colon; 791 792sub annotate_reset { 793 $av_preprocessor = 0; 794 $av_pending = '_'; 795 @av_paren_type = ('E'); 796 $av_pend_colon = 'O'; 797} 798 799sub annotate_values { 800 my ($stream, $type) = @_; 801 802 my $res; 803 my $var = '_' x length($stream); 804 my $cur = $stream; 805 806 print "$stream\n" if ($dbg_values > 1); 807 808 while (length($cur)) { 809 @av_paren_type = ('E') if ($#av_paren_type < 0); 810 print " <" . join('', @av_paren_type) . 811 "> <$type> <$av_pending>" if ($dbg_values > 1); 812 if ($cur =~ /^(\s+)/o) { 813 print "WS($1)\n" if ($dbg_values > 1); 814 if ($1 =~ /\n/ && $av_preprocessor) { 815 $type = pop(@av_paren_type); 816 $av_preprocessor = 0; 817 } 818 819 } elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') { 820 print "CAST($1)\n" if ($dbg_values > 1); 821 push(@av_paren_type, $type); 822 $type = 'C'; 823 824 } elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) { 825 print "DECLARE($1)\n" if ($dbg_values > 1); 826 $type = 'T'; 827 828 } elsif ($cur =~ /^($Modifier)\s*/) { 829 print "MODIFIER($1)\n" if ($dbg_values > 1); 830 $type = 'T'; 831 832 } elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) { 833 print "DEFINE($1,$2)\n" if ($dbg_values > 1); 834 $av_preprocessor = 1; 835 push(@av_paren_type, $type); 836 if ($2 ne '') { 837 $av_pending = 'N'; 838 } 839 $type = 'E'; 840 841 } elsif ($cur =~ /^(\#\s*(?:undef\s*$Ident|include\b))/o) { 842 print "UNDEF($1)\n" if ($dbg_values > 1); 843 $av_preprocessor = 1; 844 push(@av_paren_type, $type); 845 846 } elsif ($cur =~ /^(\#\s*(?:ifdef|ifndef|if))/o) { 847 print "PRE_START($1)\n" if ($dbg_values > 1); 848 $av_preprocessor = 1; 849 850 push(@av_paren_type, $type); 851 push(@av_paren_type, $type); 852 $type = 'E'; 853 854 } elsif ($cur =~ /^(\#\s*(?:else|elif))/o) { 855 print "PRE_RESTART($1)\n" if ($dbg_values > 1); 856 $av_preprocessor = 1; 857 858 push(@av_paren_type, $av_paren_type[$#av_paren_type]); 859 860 $type = 'E'; 861 862 } elsif ($cur =~ /^(\#\s*(?:endif))/o) { 863 print "PRE_END($1)\n" if ($dbg_values > 1); 864 865 $av_preprocessor = 1; 866 867 # Assume all arms of the conditional end as this 868 # one does, and continue as if the #endif was not here. 869 pop(@av_paren_type); 870 push(@av_paren_type, $type); 871 $type = 'E'; 872 873 } elsif ($cur =~ /^(\\\n)/o) { 874 print "PRECONT($1)\n" if ($dbg_values > 1); 875 876 } elsif ($cur =~ /^(__attribute__)\s*\(?/o) { 877 print "ATTR($1)\n" if ($dbg_values > 1); 878 $av_pending = $type; 879 $type = 'N'; 880 881 } elsif ($cur =~ /^(sizeof)\s*(\()?/o) { 882 print "SIZEOF($1)\n" if ($dbg_values > 1); 883 if (defined $2) { 884 $av_pending = 'V'; 885 } 886 $type = 'N'; 887 888 } elsif ($cur =~ /^(if|while|for)\b/o) { 889 print "COND($1)\n" if ($dbg_values > 1); 890 $av_pending = 'E'; 891 $type = 'N'; 892 893 } elsif ($cur =~/^(case)/o) { 894 print "CASE($1)\n" if ($dbg_values > 1); 895 $av_pend_colon = 'C'; 896 $type = 'N'; 897 898 } elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) { 899 print "KEYWORD($1)\n" if ($dbg_values > 1); 900 $type = 'N'; 901 902 } elsif ($cur =~ /^(\()/o) { 903 print "PAREN('$1')\n" if ($dbg_values > 1); 904 push(@av_paren_type, $av_pending); 905 $av_pending = '_'; 906 $type = 'N'; 907 908 } elsif ($cur =~ /^(\))/o) { 909 my $new_type = pop(@av_paren_type); 910 if ($new_type ne '_') { 911 $type = $new_type; 912 print "PAREN('$1') -> $type\n" 913 if ($dbg_values > 1); 914 } else { 915 print "PAREN('$1')\n" if ($dbg_values > 1); 916 } 917 918 } elsif ($cur =~ /^($Ident)\s*\(/o) { 919 print "FUNC($1)\n" if ($dbg_values > 1); 920 $type = 'V'; 921 $av_pending = 'V'; 922 923 } elsif ($cur =~ /^($Ident\s*):(?:\s*\d+\s*(,|=|;))?/) { 924 if (defined $2 && $type eq 'C' || $type eq 'T') { 925 $av_pend_colon = 'B'; 926 } elsif ($type eq 'E') { 927 $av_pend_colon = 'L'; 928 } 929 print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1); 930 $type = 'V'; 931 932 } elsif ($cur =~ /^($Ident|$Constant)/o) { 933 print "IDENT($1)\n" if ($dbg_values > 1); 934 $type = 'V'; 935 936 } elsif ($cur =~ /^($Assignment)/o) { 937 print "ASSIGN($1)\n" if ($dbg_values > 1); 938 $type = 'N'; 939 940 } elsif ($cur =~/^(;|{|})/) { 941 print "END($1)\n" if ($dbg_values > 1); 942 $type = 'E'; 943 $av_pend_colon = 'O'; 944 945 } elsif ($cur =~/^(,)/) { 946 print "COMMA($1)\n" if ($dbg_values > 1); 947 $type = 'C'; 948 949 } elsif ($cur =~ /^(\?)/o) { 950 print "QUESTION($1)\n" if ($dbg_values > 1); 951 $type = 'N'; 952 953 } elsif ($cur =~ /^(:)/o) { 954 print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1); 955 956 substr($var, length($res), 1, $av_pend_colon); 957 if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') { 958 $type = 'E'; 959 } else { 960 $type = 'N'; 961 } 962 $av_pend_colon = 'O'; 963 964 } elsif ($cur =~ /^(\[)/o) { 965 print "CLOSE($1)\n" if ($dbg_values > 1); 966 $type = 'N'; 967 968 } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) { 969 my $variant; 970 971 print "OPV($1)\n" if ($dbg_values > 1); 972 if ($type eq 'V') { 973 $variant = 'B'; 974 } else { 975 $variant = 'U'; 976 } 977 978 substr($var, length($res), 1, $variant); 979 $type = 'N'; 980 981 } elsif ($cur =~ /^($Operators)/o) { 982 print "OP($1)\n" if ($dbg_values > 1); 983 if ($1 ne '++' && $1 ne '--') { 984 $type = 'N'; 985 } 986 987 } elsif ($cur =~ /(^.)/o) { 988 print "C($1)\n" if ($dbg_values > 1); 989 } 990 if (defined $1) { 991 $cur = substr($cur, length($1)); 992 $res .= $type x length($1); 993 } 994 } 995 996 return ($res, $var); 997} 998 999sub possible { 1000 my ($possible, $line) = @_; 1001 my $notPermitted = qr{(?: 1002 ^(?: 1003 $Modifier| 1004 $Storage| 1005 $Type| 1006 DEFINE_\S+ 1007 )$| 1008 ^(?: 1009 goto| 1010 return| 1011 case| 1012 else| 1013 asm|__asm__| 1014 do| 1015 \#| 1016 \#\# 1017 )(?:\s|$)| 1018 ^(?:typedef|struct|enum)\b 1019 )}x; 1020 warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2); 1021 if ($possible !~ $notPermitted) { 1022 # Check for modifiers. 1023 $possible =~ s/\s*$Storage\s*//g; 1024 $possible =~ s/\s*$Sparse\s*//g; 1025 if ($possible =~ /^\s*$/) { 1026 1027 } elsif ($possible =~ /\s/) { 1028 $possible =~ s/\s*$Type\s*//g; 1029 for my $modifier (split(' ', $possible)) { 1030 if ($modifier !~ $notPermitted) { 1031 warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible); 1032 push(@modifierList, $modifier); 1033 } 1034 } 1035 1036 } else { 1037 warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible); 1038 push(@typeList, $possible); 1039 } 1040 build_types(); 1041 } else { 1042 warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1); 1043 } 1044} 1045 1046my $prefix = ''; 1047 1048sub report { 1049 if (defined $tst_only && $_[0] !~ /\Q$tst_only\E/) { 1050 return 0; 1051 } 1052 my $line = $prefix . $_[0]; 1053 1054 $line = (split('\n', $line))[0] . "\n" if ($terse); 1055 1056 push(our @report, $line); 1057 1058 return 1; 1059} 1060sub report_dump { 1061 our @report; 1062} 1063sub ERROR { 1064 if (report("ERROR: $_[0]\n")) { 1065 our $clean = 0; 1066 our $cnt_error++; 1067 } 1068} 1069sub WARN { 1070 if (report("WARNING: $_[0]\n")) { 1071 our $clean = 0; 1072 our $cnt_warn++; 1073 } 1074} 1075sub CHK { 1076 if ($check && report("CHECK: $_[0]\n")) { 1077 our $clean = 0; 1078 our $cnt_chk++; 1079 } 1080} 1081 1082sub process { 1083 my $filename = shift; 1084 1085 my $linenr=0; 1086 my $prevline=""; 1087 my $prevrawline=""; 1088 my $stashline=""; 1089 my $stashrawline=""; 1090 1091 my $length; 1092 my $indent; 1093 my $previndent=0; 1094 my $stashindent=0; 1095 1096 our $clean = 1; 1097 my $signoff = 0; 1098 my $is_patch = 0; 1099 1100 our @report = (); 1101 our $cnt_lines = 0; 1102 our $cnt_error = 0; 1103 our $cnt_warn = 0; 1104 our $cnt_chk = 0; 1105 1106 # Trace the real file/line as we go. 1107 my $realfile = ''; 1108 my $realline = 0; 1109 my $realcnt = 0; 1110 my $here = ''; 1111 my $in_comment = 0; 1112 my $comment_edge = 0; 1113 my $first_line = 0; 1114 my $p1_prefix = ''; 1115 1116 my $prev_values = 'E'; 1117 1118 # suppression flags 1119 my %suppress_ifbraces; 1120 my %suppress_whiletrailers; 1121 my %suppress_export; 1122 1123 # Pre-scan the patch sanitizing the lines. 1124 1125 sanitise_line_reset(); 1126 my $line; 1127 foreach my $rawline (@rawlines) { 1128 $linenr++; 1129 $line = $rawline; 1130 1131 if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) { 1132 $realline=$1-1; 1133 if (defined $2) { 1134 $realcnt=$3+1; 1135 } else { 1136 $realcnt=1+1; 1137 } 1138 $in_comment = 0; 1139 1140 # Guestimate if this is a continuing comment. Run 1141 # the context looking for a comment "edge". If this 1142 # edge is a close comment then we must be in a comment 1143 # at context start. 1144 my $edge; 1145 my $cnt = $realcnt; 1146 for (my $ln = $linenr + 1; $cnt > 0; $ln++) { 1147 next if (defined $rawlines[$ln - 1] && 1148 $rawlines[$ln - 1] =~ /^-/); 1149 $cnt--; 1150 #print "RAW<$rawlines[$ln - 1]>\n"; 1151 last if (!defined $rawlines[$ln - 1]); 1152 if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ && 1153 $rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) { 1154 ($edge) = $1; 1155 last; 1156 } 1157 } 1158 if (defined $edge && $edge eq '*/') { 1159 $in_comment = 1; 1160 } 1161 1162 # Guestimate if this is a continuing comment. If this 1163 # is the start of a diff block and this line starts 1164 # ' *' then it is very likely a comment. 1165 if (!defined $edge && 1166 $rawlines[$linenr] =~ m@^.\s*(?:\*\*+| \*)(?:\s|$)@) 1167 { 1168 $in_comment = 1; 1169 } 1170 1171 ##print "COMMENT:$in_comment edge<$edge> $rawline\n"; 1172 sanitise_line_reset($in_comment); 1173 1174 } elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) { 1175 # Standardise the strings and chars within the input to 1176 # simplify matching -- only bother with positive lines. 1177 $line = sanitise_line($rawline); 1178 } 1179 push(@lines, $line); 1180 1181 if ($realcnt > 1) { 1182 $realcnt-- if ($line =~ /^(?:\+| |$)/); 1183 } else { 1184 $realcnt = 0; 1185 } 1186 1187 #print "==>$rawline\n"; 1188 #print "-->$line\n"; 1189 } 1190 1191 $prefix = ''; 1192 1193 $realcnt = 0; 1194 $linenr = 0; 1195 foreach my $line (@lines) { 1196 $linenr++; 1197 1198 my $rawline = $rawlines[$linenr - 1]; 1199 1200#extract the line range in the file after the patch is applied 1201 if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) { 1202 $is_patch = 1; 1203 $first_line = $linenr + 1; 1204 $realline=$1-1; 1205 if (defined $2) { 1206 $realcnt=$3+1; 1207 } else { 1208 $realcnt=1+1; 1209 } 1210 annotate_reset(); 1211 $prev_values = 'E'; 1212 1213 %suppress_ifbraces = (); 1214 %suppress_whiletrailers = (); 1215 %suppress_export = (); 1216 next; 1217 1218# track the line number as we move through the hunk, note that 1219# new versions of GNU diff omit the leading space on completely 1220# blank context lines so we need to count that too. 1221 } elsif ($line =~ /^( |\+|$)/) { 1222 $realline++; 1223 $realcnt-- if ($realcnt != 0); 1224 1225 # Measure the line length and indent. 1226 ($length, $indent) = line_stats($rawline); 1227 1228 # Track the previous line. 1229 ($prevline, $stashline) = ($stashline, $line); 1230 ($previndent, $stashindent) = ($stashindent, $indent); 1231 ($prevrawline, $stashrawline) = ($stashrawline, $rawline); 1232 1233 #warn "line<$line>\n"; 1234 1235 } elsif ($realcnt == 1) { 1236 $realcnt--; 1237 } 1238 1239 my $hunk_line = ($realcnt != 0); 1240 1241#make up the handle for any error we report on this line 1242 $prefix = "$filename:$realline: " if ($emacs && $file); 1243 $prefix = "$filename:$linenr: " if ($emacs && !$file); 1244 1245 $here = "#$linenr: " if (!$file); 1246 $here = "#$realline: " if ($file); 1247 1248 # extract the filename as it passes 1249 if ($line =~ /^diff --git.*?(\S+)$/) { 1250 $realfile = $1; 1251 $realfile =~ s@^([^/]*)/@@; 1252 1253 } elsif ($line =~ /^\+\+\+\s+(\S+)/) { 1254 $realfile = $1; 1255 $realfile =~ s@^([^/]*)/@@; 1256 1257 $p1_prefix = $1; 1258 if (!$file && $tree && $p1_prefix ne '' && 1259 -e "$root/$p1_prefix") { 1260 WARN("patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n"); 1261 } 1262 1263 next; 1264 } 1265 1266 $here .= "FILE: $realfile:$realline:" if ($realcnt != 0); 1267 1268 my $hereline = "$here\n$rawline\n"; 1269 my $herecurr = "$here\n$rawline\n"; 1270 my $hereprev = "$here\n$prevrawline\n$rawline\n"; 1271 1272 $cnt_lines++ if ($realcnt != 0); 1273 1274# Check for incorrect file permissions 1275 if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) { 1276 my $permhere = $here . "FILE: $realfile\n"; 1277 if ($realfile =~ /(\bMakefile(?:\.objs)?|\.c|\.cc|\.cpp|\.h|\.mak|\.[sS])$/) { 1278 ERROR("do not set execute permissions for source files\n" . $permhere); 1279 } 1280 } 1281 1282# Accept git diff extended headers as valid patches 1283 if ($line =~ /^(?:rename|copy) (?:from|to) [\w\/\.\-]+\s*$/) { 1284 $is_patch = 1; 1285 } 1286 1287#check the patch for a signoff: 1288 if ($line =~ /^\s*signed-off-by:/i) { 1289 # This is a signoff, if ugly, so do not double report. 1290 $signoff++; 1291 if (!($line =~ /^\s*Signed-off-by:/)) { 1292 WARN("Signed-off-by: is the preferred form\n" . 1293 $herecurr); 1294 } 1295 if ($line =~ /^\s*signed-off-by:\S/i) { 1296 WARN("space required after Signed-off-by:\n" . 1297 $herecurr); 1298 } 1299 } 1300 1301# Check for wrappage within a valid hunk of the file 1302 if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) { 1303 ERROR("patch seems to be corrupt (line wrapped?)\n" . 1304 $herecurr) if (!$emitted_corrupt++); 1305 } 1306 1307# UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php 1308 if (($realfile =~ /^$/ || $line =~ /^\+/) && 1309 $rawline !~ m/^$UTF8*$/) { 1310 my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/); 1311 1312 my $blank = copy_spacing($rawline); 1313 my $ptr = substr($blank, 0, length($utf8_prefix)) . "^"; 1314 my $hereptr = "$hereline$ptr\n"; 1315 1316 ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr); 1317 } 1318 1319# ignore non-hunk lines and lines being removed 1320 next if (!$hunk_line || $line =~ /^-/); 1321 1322#trailing whitespace 1323 if ($line =~ /^\+.*\015/) { 1324 my $herevet = "$here\n" . cat_vet($rawline) . "\n"; 1325 ERROR("DOS line endings\n" . $herevet); 1326 1327 } elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) { 1328 my $herevet = "$here\n" . cat_vet($rawline) . "\n"; 1329 ERROR("trailing whitespace\n" . $herevet); 1330 $rpt_cleaners = 1; 1331 } 1332 1333# check we are in a valid source file if not then ignore this hunk 1334 next if ($realfile !~ /\.(h|c|cpp|s|S|pl|sh)$/); 1335 1336#80 column limit 1337 if ($line =~ /^\+/ && 1338 !($line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) && 1339 $length > 80) 1340 { 1341 WARN("line over 80 characters\n" . $herecurr); 1342 } 1343 1344# check for spaces before a quoted newline 1345 if ($rawline =~ /^.*\".*\s\\n/) { 1346 WARN("unnecessary whitespace before a quoted newline\n" . $herecurr); 1347 } 1348 1349# check for adding lines without a newline. 1350 if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) { 1351 WARN("adding a line without newline at end of file\n" . $herecurr); 1352 } 1353 1354# check we are in a valid source file C or perl if not then ignore this hunk 1355 next if ($realfile !~ /\.(h|c|cpp|pl)$/); 1356 1357# in QEMU, no tabs are allowed 1358 if ($rawline =~ /^\+.*\t/) { 1359 my $herevet = "$here\n" . cat_vet($rawline) . "\n"; 1360 ERROR("code indent should never use tabs\n" . $herevet); 1361 $rpt_cleaners = 1; 1362 } 1363 1364# check we are in a valid C source file if not then ignore this hunk 1365 next if ($realfile !~ /\.(h|c|cpp)$/); 1366 1367# check for RCS/CVS revision markers 1368 if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) { 1369 WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr); 1370 } 1371 1372# Check for potential 'bare' types 1373 my ($stat, $cond, $line_nr_next, $remain_next, $off_next, 1374 $realline_next); 1375 if ($realcnt && $line =~ /.\s*\S/) { 1376 ($stat, $cond, $line_nr_next, $remain_next, $off_next) = 1377 ctx_statement_block($linenr, $realcnt, 0); 1378 $stat =~ s/\n./\n /g; 1379 $cond =~ s/\n./\n /g; 1380 1381 # Find the real next line. 1382 $realline_next = $line_nr_next; 1383 if (defined $realline_next && 1384 (!defined $lines[$realline_next - 1] || 1385 substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) { 1386 $realline_next++; 1387 } 1388 1389 my $s = $stat; 1390 $s =~ s/{.*$//s; 1391 1392 # Ignore goto labels. 1393 if ($s =~ /$Ident:\*$/s) { 1394 1395 # Ignore functions being called 1396 } elsif ($s =~ /^.\s*$Ident\s*\(/s) { 1397 1398 } elsif ($s =~ /^.\s*else\b/s) { 1399 1400 # declarations always start with types 1401 } elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?((?:\s*$Ident)+?)\b(?:\s+$Sparse)?\s*\**\s*(?:$Ident|\(\*[^\)]*\))(?:\s*$Modifier)?\s*(?:;|=|,|\()/s) { 1402 my $type = $1; 1403 $type =~ s/\s+/ /g; 1404 possible($type, "A:" . $s); 1405 1406 # definitions in global scope can only start with types 1407 } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) { 1408 possible($1, "B:" . $s); 1409 } 1410 1411 # any (foo ... *) is a pointer cast, and foo is a type 1412 while ($s =~ /\(($Ident)(?:\s+$Sparse)*[\s\*]+\s*\)/sg) { 1413 possible($1, "C:" . $s); 1414 } 1415 1416 # Check for any sort of function declaration. 1417 # int foo(something bar, other baz); 1418 # void (*store_gdt)(x86_descr_ptr *); 1419 if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/s) { 1420 my ($name_len) = length($1); 1421 1422 my $ctx = $s; 1423 substr($ctx, 0, $name_len + 1, ''); 1424 $ctx =~ s/\)[^\)]*$//; 1425 1426 for my $arg (split(/\s*,\s*/, $ctx)) { 1427 if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/s || $arg =~ /^($Ident)$/s) { 1428 1429 possible($1, "D:" . $s); 1430 } 1431 } 1432 } 1433 1434 } 1435 1436# 1437# Checks which may be anchored in the context. 1438# 1439 1440# Check for switch () and associated case and default 1441# statements should be at the same indent. 1442 if ($line=~/\bswitch\s*\(.*\)/) { 1443 my $err = ''; 1444 my $sep = ''; 1445 my @ctx = ctx_block_outer($linenr, $realcnt); 1446 shift(@ctx); 1447 for my $ctx (@ctx) { 1448 my ($clen, $cindent) = line_stats($ctx); 1449 if ($ctx =~ /^\+\s*(case\s+|default:)/ && 1450 $indent != $cindent) { 1451 $err .= "$sep$ctx\n"; 1452 $sep = ''; 1453 } else { 1454 $sep = "[...]\n"; 1455 } 1456 } 1457 if ($err ne '') { 1458 ERROR("switch and case should be at the same indent\n$hereline$err"); 1459 } 1460 } 1461 1462# if/while/etc brace do not go on next line, unless defining a do while loop, 1463# or if that brace on the next line is for something else 1464 if ($line =~ /(.*)\b((?:if|while|for|switch)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) { 1465 my $pre_ctx = "$1$2"; 1466 1467 my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0); 1468 my $ctx_cnt = $realcnt - $#ctx - 1; 1469 my $ctx = join("\n", @ctx); 1470 1471 my $ctx_ln = $linenr; 1472 my $ctx_skip = $realcnt; 1473 1474 while ($ctx_skip > $ctx_cnt || ($ctx_skip == $ctx_cnt && 1475 defined $lines[$ctx_ln - 1] && 1476 $lines[$ctx_ln - 1] =~ /^-/)) { 1477 ##print "SKIP<$ctx_skip> CNT<$ctx_cnt>\n"; 1478 $ctx_skip-- if (!defined $lines[$ctx_ln - 1] || $lines[$ctx_ln - 1] !~ /^-/); 1479 $ctx_ln++; 1480 } 1481 1482 #print "realcnt<$realcnt> ctx_cnt<$ctx_cnt>\n"; 1483 #print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n"; 1484 1485 # The length of the "previous line" is checked against 80 because it 1486 # includes the + at the beginning of the line (if the actual line has 1487 # 79 or 80 characters, it is no longer possible to add a space and an 1488 # opening brace there) 1489 if ($#ctx == 0 && $ctx !~ /{\s*/ && 1490 defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*\{/ && 1491 defined($lines[$ctx_ln - 2]) && length($lines[$ctx_ln - 2]) < 80) { 1492 ERROR("that open brace { should be on the previous line\n" . 1493 "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n"); 1494 } 1495 if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ && 1496 $ctx =~ /\)\s*\;\s*$/ && 1497 defined $lines[$ctx_ln - 1]) 1498 { 1499 my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]); 1500 if ($nindent > $indent) { 1501 WARN("trailing semicolon indicates no statements, indent implies otherwise\n" . 1502 "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n"); 1503 } 1504 } 1505 } 1506 1507# Check relative indent for conditionals and blocks. 1508 if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) { 1509 my ($s, $c) = ($stat, $cond); 1510 1511 substr($s, 0, length($c), ''); 1512 1513 # Make sure we remove the line prefixes as we have 1514 # none on the first line, and are going to readd them 1515 # where necessary. 1516 $s =~ s/\n./\n/gs; 1517 1518 # Find out how long the conditional actually is. 1519 my @newlines = ($c =~ /\n/gs); 1520 my $cond_lines = 1 + $#newlines; 1521 1522 # We want to check the first line inside the block 1523 # starting at the end of the conditional, so remove: 1524 # 1) any blank line termination 1525 # 2) any opening brace { on end of the line 1526 # 3) any do (...) { 1527 my $continuation = 0; 1528 my $check = 0; 1529 $s =~ s/^.*\bdo\b//; 1530 $s =~ s/^\s*\{//; 1531 if ($s =~ s/^\s*\\//) { 1532 $continuation = 1; 1533 } 1534 if ($s =~ s/^\s*?\n//) { 1535 $check = 1; 1536 $cond_lines++; 1537 } 1538 1539 # Also ignore a loop construct at the end of a 1540 # preprocessor statement. 1541 if (($prevline =~ /^.\s*#\s*define\s/ || 1542 $prevline =~ /\\\s*$/) && $continuation == 0) { 1543 $check = 0; 1544 } 1545 1546 my $cond_ptr = -1; 1547 $continuation = 0; 1548 while ($cond_ptr != $cond_lines) { 1549 $cond_ptr = $cond_lines; 1550 1551 # If we see an #else/#elif then the code 1552 # is not linear. 1553 if ($s =~ /^\s*\#\s*(?:else|elif)/) { 1554 $check = 0; 1555 } 1556 1557 # Ignore: 1558 # 1) blank lines, they should be at 0, 1559 # 2) preprocessor lines, and 1560 # 3) labels. 1561 if ($continuation || 1562 $s =~ /^\s*?\n/ || 1563 $s =~ /^\s*#\s*?/ || 1564 $s =~ /^\s*$Ident\s*:/) { 1565 $continuation = ($s =~ /^.*?\\\n/) ? 1 : 0; 1566 if ($s =~ s/^.*?\n//) { 1567 $cond_lines++; 1568 } 1569 } 1570 } 1571 1572 my (undef, $sindent) = line_stats("+" . $s); 1573 my $stat_real = raw_line($linenr, $cond_lines); 1574 1575 # Check if either of these lines are modified, else 1576 # this is not this patch's fault. 1577 if (!defined($stat_real) || 1578 $stat !~ /^\+/ && $stat_real !~ /^\+/) { 1579 $check = 0; 1580 } 1581 if (defined($stat_real) && $cond_lines > 1) { 1582 $stat_real = "[...]\n$stat_real"; 1583 } 1584 1585 #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"; 1586 1587 if ($check && (($sindent % 4) != 0 || 1588 ($sindent <= $indent && $s ne ''))) { 1589 WARN("suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n"); 1590 } 1591 } 1592 1593 # Track the 'values' across context and added lines. 1594 my $opline = $line; $opline =~ s/^./ /; 1595 my ($curr_values, $curr_vars) = 1596 annotate_values($opline . "\n", $prev_values); 1597 $curr_values = $prev_values . $curr_values; 1598 if ($dbg_values) { 1599 my $outline = $opline; $outline =~ s/\t/ /g; 1600 print "$linenr > .$outline\n"; 1601 print "$linenr > $curr_values\n"; 1602 print "$linenr > $curr_vars\n"; 1603 } 1604 $prev_values = substr($curr_values, -1); 1605 1606#ignore lines not being added 1607 if ($line=~/^[^\+]/) {next;} 1608 1609# TEST: allow direct testing of the type matcher. 1610 if ($dbg_type) { 1611 if ($line =~ /^.\s*$Declare\s*$/) { 1612 ERROR("TEST: is type\n" . $herecurr); 1613 } elsif ($dbg_type > 1 && $line =~ /^.+($Declare)/) { 1614 ERROR("TEST: is not type ($1 is)\n". $herecurr); 1615 } 1616 next; 1617 } 1618# TEST: allow direct testing of the attribute matcher. 1619 if ($dbg_attr) { 1620 if ($line =~ /^.\s*$Modifier\s*$/) { 1621 ERROR("TEST: is attr\n" . $herecurr); 1622 } elsif ($dbg_attr > 1 && $line =~ /^.+($Modifier)/) { 1623 ERROR("TEST: is not attr ($1 is)\n". $herecurr); 1624 } 1625 next; 1626 } 1627 1628# check for initialisation to aggregates open brace on the next line 1629 if ($line =~ /^.\s*\{/ && 1630 $prevline =~ /(?:^|[^=])=\s*$/) { 1631 ERROR("that open brace { should be on the previous line\n" . $hereprev); 1632 } 1633 1634# 1635# Checks which are anchored on the added line. 1636# 1637 1638# check for malformed paths in #include statements (uses RAW line) 1639 if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) { 1640 my $path = $1; 1641 if ($path =~ m{//}) { 1642 ERROR("malformed #include filename\n" . 1643 $herecurr); 1644 } 1645 } 1646 1647# no C99 // comments 1648 if ($line =~ m{//}) { 1649 ERROR("do not use C99 // comments\n" . $herecurr); 1650 } 1651 # Remove C99 comments. 1652 $line =~ s@//.*@@; 1653 $opline =~ s@//.*@@; 1654 1655# check for global initialisers. 1656 if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) { 1657 ERROR("do not initialise globals to 0 or NULL\n" . 1658 $herecurr); 1659 } 1660# check for static initialisers. 1661 if ($line =~ /\bstatic\s.*=\s*(0|NULL|false)\s*;/) { 1662 ERROR("do not initialise statics to 0 or NULL\n" . 1663 $herecurr); 1664 } 1665 1666# * goes on variable not on type 1667 # (char*[ const]) 1668 if ($line =~ m{\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\)}) { 1669 my ($from, $to) = ($1, $1); 1670 1671 # Should start with a space. 1672 $to =~ s/^(\S)/ $1/; 1673 # Should not end with a space. 1674 $to =~ s/\s+$//; 1675 # '*'s should not have spaces between. 1676 while ($to =~ s/\*\s+\*/\*\*/) { 1677 } 1678 1679 #print "from<$from> to<$to>\n"; 1680 if ($from ne $to) { 1681 ERROR("\"(foo$from)\" should be \"(foo$to)\"\n" . $herecurr); 1682 } 1683 } elsif ($line =~ m{\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident)}) { 1684 my ($from, $to, $ident) = ($1, $1, $2); 1685 1686 # Should start with a space. 1687 $to =~ s/^(\S)/ $1/; 1688 # Should not end with a space. 1689 $to =~ s/\s+$//; 1690 # '*'s should not have spaces between. 1691 while ($to =~ s/\*\s+\*/\*\*/) { 1692 } 1693 # Modifiers should have spaces. 1694 $to =~ s/(\b$Modifier$)/$1 /; 1695 1696 #print "from<$from> to<$to> ident<$ident>\n"; 1697 if ($from ne $to && $ident !~ /^$Modifier$/) { 1698 ERROR("\"foo${from}bar\" should be \"foo${to}bar\"\n" . $herecurr); 1699 } 1700 } 1701 1702# function brace can't be on same line, except for #defines of do while, 1703# or if closed on same line 1704 if (($line=~/$Type\s*$Ident\(.*\).*\s\{/) and 1705 !($line=~/\#\s*define.*do\s\{/) and !($line=~/}/)) { 1706 ERROR("open brace '{' following function declarations go on the next line\n" . $herecurr); 1707 } 1708 1709# open braces for enum, union and struct go on the same line. 1710 if ($line =~ /^.\s*\{/ && 1711 $prevline =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?\s*$/) { 1712 ERROR("open brace '{' following $1 go on the same line\n" . $hereprev); 1713 } 1714 1715# missing space after union, struct or enum definition 1716 if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?(?:\s+$Ident)?[=\{]/) { 1717 ERROR("missing space after $1 definition\n" . $herecurr); 1718 } 1719 1720# check for spacing round square brackets; allowed: 1721# 1. with a type on the left -- int [] a; 1722# 2. at the beginning of a line for slice initialisers -- [0...10] = 5, 1723# 3. inside a curly brace -- = { [0...10] = 5 } 1724# 4. after a comma -- [1] = 5, [2] = 6 1725# 5. in a macro definition -- #define abc(x) [x] = y 1726 while ($line =~ /(.*?\s)\[/g) { 1727 my ($where, $prefix) = ($-[1], $1); 1728 if ($prefix !~ /$Type\s+$/ && 1729 ($where != 0 || $prefix !~ /^.\s+$/) && 1730 $prefix !~ /{\s+$/ && 1731 $prefix !~ /\#\s*define[^(]*\([^)]*\)\s+$/ && 1732 $prefix !~ /,\s+$/) { 1733 ERROR("space prohibited before open square bracket '['\n" . $herecurr); 1734 } 1735 } 1736 1737# check for spaces between functions and their parentheses. 1738 while ($line =~ /($Ident)\s+\(/g) { 1739 my $name = $1; 1740 my $ctx_before = substr($line, 0, $-[1]); 1741 my $ctx = "$ctx_before$name"; 1742 1743 # Ignore those directives where spaces _are_ permitted. 1744 if ($name =~ /^(?: 1745 if|for|while|switch|return|case| 1746 volatile|__volatile__| 1747 __attribute__|format|__extension__| 1748 asm|__asm__)$/x) 1749 { 1750 1751 # Ignore 'catch (...)' in C++ 1752 } elsif ($name =~ /^catch$/ && $realfile =~ /(\.cpp|\.h)$/) { 1753 1754 # cpp #define statements have non-optional spaces, ie 1755 # if there is a space between the name and the open 1756 # parenthesis it is simply not a parameter group. 1757 } elsif ($ctx_before =~ /^.\s*\#\s*define\s*$/) { 1758 1759 # cpp #elif statement condition may start with a ( 1760 } elsif ($ctx =~ /^.\s*\#\s*elif\s*$/) { 1761 1762 # If this whole things ends with a type its most 1763 # likely a typedef for a function. 1764 } elsif ($ctx =~ /$Type$/) { 1765 1766 } else { 1767 WARN("space prohibited between function name and open parenthesis '('\n" . $herecurr); 1768 } 1769 } 1770# Check operator spacing. 1771 if (!($line=~/\#\s*include/)) { 1772 my $ops = qr{ 1773 <<=|>>=|<=|>=|==|!=| 1774 \+=|-=|\*=|\/=|%=|\^=|\|=|&=| 1775 =>|->|<<|>>|<|>|=|!|~| 1776 &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%| 1777 \?|::|: 1778 }x; 1779 my @elements = split(/($ops|;)/, $opline); 1780 my $off = 0; 1781 1782 my $blank = copy_spacing($opline); 1783 1784 for (my $n = 0; $n < $#elements; $n += 2) { 1785 $off += length($elements[$n]); 1786 1787 # Pick up the preceding and succeeding characters. 1788 my $ca = substr($opline, 0, $off); 1789 my $cc = ''; 1790 if (length($opline) >= ($off + length($elements[$n + 1]))) { 1791 $cc = substr($opline, $off + length($elements[$n + 1])); 1792 } 1793 my $cb = "$ca$;$cc"; 1794 1795 my $a = ''; 1796 $a = 'V' if ($elements[$n] ne ''); 1797 $a = 'W' if ($elements[$n] =~ /\s$/); 1798 $a = 'C' if ($elements[$n] =~ /$;$/); 1799 $a = 'B' if ($elements[$n] =~ /(\[|\()$/); 1800 $a = 'O' if ($elements[$n] eq ''); 1801 $a = 'E' if ($ca =~ /^\s*$/); 1802 1803 my $op = $elements[$n + 1]; 1804 1805 my $c = ''; 1806 if (defined $elements[$n + 2]) { 1807 $c = 'V' if ($elements[$n + 2] ne ''); 1808 $c = 'W' if ($elements[$n + 2] =~ /^\s/); 1809 $c = 'C' if ($elements[$n + 2] =~ /^$;/); 1810 $c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/); 1811 $c = 'O' if ($elements[$n + 2] eq ''); 1812 $c = 'E' if ($elements[$n + 2] =~ /^\s*\\$/); 1813 } else { 1814 $c = 'E'; 1815 } 1816 1817 my $ctx = "${a}x${c}"; 1818 1819 my $at = "(ctx:$ctx)"; 1820 1821 my $ptr = substr($blank, 0, $off) . "^"; 1822 my $hereptr = "$hereline$ptr\n"; 1823 1824 # Pull out the value of this operator. 1825 my $op_type = substr($curr_values, $off + 1, 1); 1826 1827 # Get the full operator variant. 1828 my $opv = $op . substr($curr_vars, $off, 1); 1829 1830 # Ignore operators passed as parameters. 1831 if ($op_type ne 'V' && 1832 $ca =~ /\s$/ && $cc =~ /^\s*,/) { 1833 1834# # Ignore comments 1835# } elsif ($op =~ /^$;+$/) { 1836 1837 # ; should have either the end of line or a space or \ after it 1838 } elsif ($op eq ';') { 1839 if ($ctx !~ /.x[WEBC]/ && 1840 $cc !~ /^\\/ && $cc !~ /^;/) { 1841 ERROR("space required after that '$op' $at\n" . $hereptr); 1842 } 1843 1844 # // is a comment 1845 } elsif ($op eq '//') { 1846 1847 # Ignore : used in class declaration in C++ 1848 } elsif ($opv eq ':B' && $ctx =~ /Wx[WE]/ && 1849 $line =~ /class/ && $realfile =~ /(\.cpp|\.h)$/) { 1850 1851 # No spaces for: 1852 # -> 1853 # : when part of a bitfield 1854 } elsif ($op eq '->' || $opv eq ':B') { 1855 if ($ctx =~ /Wx.|.xW/) { 1856 ERROR("spaces prohibited around that '$op' $at\n" . $hereptr); 1857 } 1858 1859 # , must have a space on the right. 1860 # not required when having a single },{ on one line 1861 } elsif ($op eq ',') { 1862 if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/ && 1863 ($elements[$n] . $elements[$n + 2]) !~ " *}\\{") { 1864 ERROR("space required after that '$op' $at\n" . $hereptr); 1865 } 1866 1867 # '*' as part of a type definition -- reported already. 1868 } elsif ($opv eq '*_') { 1869 #warn "'*' is part of type\n"; 1870 1871 # unary operators should have a space before and 1872 # none after. May be left adjacent to another 1873 # unary operator, or a cast 1874 } elsif ($op eq '!' || $op eq '~' || 1875 $opv eq '*U' || $opv eq '-U' || 1876 $opv eq '&U' || $opv eq '&&U') { 1877 if ($op eq '~' && $ca =~ /::$/ && $realfile =~ /(\.cpp|\.h)$/) { 1878 # '~' used as a name of Destructor 1879 1880 } elsif ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) { 1881 ERROR("space required before that '$op' $at\n" . $hereptr); 1882 } 1883 if ($op eq '*' && $cc =~/\s*$Modifier\b/) { 1884 # A unary '*' may be const 1885 1886 } elsif ($ctx =~ /.xW/) { 1887 ERROR("space prohibited after that '$op' $at\n" . $hereptr); 1888 } 1889 1890 # unary ++ and unary -- are allowed no space on one side. 1891 } elsif ($op eq '++' or $op eq '--') { 1892 if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) { 1893 ERROR("space required one side of that '$op' $at\n" . $hereptr); 1894 } 1895 if ($ctx =~ /Wx[BE]/ || 1896 ($ctx =~ /Wx./ && $cc =~ /^;/)) { 1897 ERROR("space prohibited before that '$op' $at\n" . $hereptr); 1898 } 1899 if ($ctx =~ /ExW/) { 1900 ERROR("space prohibited after that '$op' $at\n" . $hereptr); 1901 } 1902 1903 # A colon needs no spaces before when it is 1904 # terminating a case value or a label. 1905 } elsif ($opv eq ':C' || $opv eq ':L') { 1906 if ($ctx =~ /Wx./) { 1907 ERROR("space prohibited before that '$op' $at\n" . $hereptr); 1908 } 1909 1910 # All the others need spaces both sides. 1911 } elsif ($ctx !~ /[EWC]x[CWE]/) { 1912 my $ok = 0; 1913 1914 if ($realfile =~ /\.cpp|\.h$/) { 1915 # Ignore template arguments <...> in C++ 1916 if (($op eq '<' || $op eq '>') && $line =~ /<.*>/) { 1917 $ok = 1; 1918 } 1919 1920 # Ignore :: in C++ 1921 if ($op eq '::') { 1922 $ok = 1; 1923 } 1924 } 1925 1926 # Ignore email addresses <foo@bar> 1927 if (($op eq '<' && 1928 $cc =~ /^\S+\@\S+>/) || 1929 ($op eq '>' && 1930 $ca =~ /<\S+\@\S+$/)) 1931 { 1932 $ok = 1; 1933 } 1934 1935 # Ignore ?: 1936 if (($opv eq ':O' && $ca =~ /\?$/) || 1937 ($op eq '?' && $cc =~ /^:/)) { 1938 $ok = 1; 1939 } 1940 1941 if ($ok == 0) { 1942 ERROR("spaces required around that '$op' $at\n" . $hereptr); 1943 } 1944 } 1945 $off += length($elements[$n + 1]); 1946 } 1947 } 1948 1949#need space before brace following if, while, etc 1950 if (($line =~ /\(.*\)\{/ && $line !~ /\($Type\)\{/) || 1951 $line =~ /do\{/) { 1952 ERROR("space required before the open brace '{'\n" . $herecurr); 1953 } 1954 1955# closing brace should have a space following it when it has anything 1956# on the line 1957 if ($line =~ /}(?!(?:,|;|\)))\S/) { 1958 ERROR("space required after that close brace '}'\n" . $herecurr); 1959 } 1960 1961# check spacing on square brackets 1962 if ($line =~ /\[\s/ && $line !~ /\[\s*$/) { 1963 ERROR("space prohibited after that open square bracket '['\n" . $herecurr); 1964 } 1965 if ($line =~ /\s\]/) { 1966 ERROR("space prohibited before that close square bracket ']'\n" . $herecurr); 1967 } 1968 1969# check spacing on parentheses 1970 if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ && 1971 $line !~ /for\s*\(\s+;/) { 1972 ERROR("space prohibited after that open parenthesis '('\n" . $herecurr); 1973 } 1974 if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ && 1975 $line !~ /for\s*\(.*;\s+\)/ && 1976 $line !~ /:\s+\)/) { 1977 ERROR("space prohibited before that close parenthesis ')'\n" . $herecurr); 1978 } 1979 1980# Return is not a function. 1981 if (defined($stat) && $stat =~ /^.\s*return(\s*)(\(.*);/s) { 1982 my $spacing = $1; 1983 my $value = $2; 1984 1985 # Flatten any parentheses 1986 $value =~ s/\(/ \(/g; 1987 $value =~ s/\)/\) /g; 1988 while ($value =~ s/\[[^\{\}]*\]/1/ || 1989 $value !~ /(?:$Ident|-?$Constant)\s* 1990 $Compare\s* 1991 (?:$Ident|-?$Constant)/x && 1992 $value =~ s/\([^\(\)]*\)/1/) { 1993 } 1994#print "value<$value>\n"; 1995 if ($value =~ /^\s*(?:$Ident|-?$Constant)\s*$/) { 1996 ERROR("return is not a function, parentheses are not required\n" . $herecurr); 1997 1998 } elsif ($spacing !~ /\s+/) { 1999 ERROR("space required before the open parenthesis '('\n" . $herecurr); 2000 } 2001 } 2002# Return of what appears to be an errno should normally be -'ve 2003 if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) { 2004 my $name = $1; 2005 if ($name ne 'EOF' && $name ne 'ERROR') { 2006 WARN("return of an errno should typically be -ve (return -$1)\n" . $herecurr); 2007 } 2008 } 2009 2010# Need a space before open parenthesis after if, while etc 2011 if ($line=~/\b(if|while|for|switch)\(/) { 2012 ERROR("space required before the open parenthesis '('\n" . $herecurr); 2013 } 2014 2015# Check for illegal assignment in if conditional -- and check for trailing 2016# statements after the conditional. 2017 if ($line =~ /do\s*(?!{)/) { 2018 my ($stat_next) = ctx_statement_block($line_nr_next, 2019 $remain_next, $off_next); 2020 $stat_next =~ s/\n./\n /g; 2021 ##print "stat<$stat> stat_next<$stat_next>\n"; 2022 2023 if ($stat_next =~ /^\s*while\b/) { 2024 # If the statement carries leading newlines, 2025 # then count those as offsets. 2026 my ($whitespace) = 2027 ($stat_next =~ /^((?:\s*\n[+-])*\s*)/s); 2028 my $offset = 2029 statement_rawlines($whitespace) - 1; 2030 2031 $suppress_whiletrailers{$line_nr_next + 2032 $offset} = 1; 2033 } 2034 } 2035 if (!defined $suppress_whiletrailers{$linenr} && 2036 $line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) { 2037 my ($s, $c) = ($stat, $cond); 2038 2039 if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) { 2040 ERROR("do not use assignment in if condition\n" . $herecurr); 2041 } 2042 2043 # Find out what is on the end of the line after the 2044 # conditional. 2045 substr($s, 0, length($c), ''); 2046 $s =~ s/\n.*//g; 2047 $s =~ s/$;//g; # Remove any comments 2048 if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ && 2049 $c !~ /}\s*while\s*/) 2050 { 2051 # Find out how long the conditional actually is. 2052 my @newlines = ($c =~ /\n/gs); 2053 my $cond_lines = 1 + $#newlines; 2054 my $stat_real = ''; 2055 2056 $stat_real = raw_line($linenr, $cond_lines) 2057 . "\n" if ($cond_lines); 2058 if (defined($stat_real) && $cond_lines > 1) { 2059 $stat_real = "[...]\n$stat_real"; 2060 } 2061 2062 ERROR("trailing statements should be on next line\n" . $herecurr . $stat_real); 2063 } 2064 } 2065 2066# Check for bitwise tests written as boolean 2067 if ($line =~ / 2068 (?: 2069 (?:\[|\(|\&\&|\|\|) 2070 \s*0[xX][0-9]+\s* 2071 (?:\&\&|\|\|) 2072 | 2073 (?:\&\&|\|\|) 2074 \s*0[xX][0-9]+\s* 2075 (?:\&\&|\|\||\)|\]) 2076 )/x) 2077 { 2078 WARN("boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr); 2079 } 2080 2081# if and else should not have general statements after it 2082 if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) { 2083 my $s = $1; 2084 $s =~ s/$;//g; # Remove any comments 2085 if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) { 2086 ERROR("trailing statements should be on next line\n" . $herecurr); 2087 } 2088 } 2089# if should not continue a brace 2090 if ($line =~ /}\s*if\b/) { 2091 ERROR("trailing statements should be on next line\n" . 2092 $herecurr); 2093 } 2094# case and default should not have general statements after them 2095 if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g && 2096 $line !~ /\G(?: 2097 (?:\s*$;*)(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$| 2098 \s*return\s+ 2099 )/xg) 2100 { 2101 ERROR("trailing statements should be on next line\n" . $herecurr); 2102 } 2103 2104 # Check for }<nl>else {, these must be at the same 2105 # indent level to be relevant to each other. 2106 if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and 2107 $previndent == $indent) { 2108 ERROR("else should follow close brace '}'\n" . $hereprev); 2109 } 2110 2111 if ($prevline=~/}\s*$/ and $line=~/^.\s*while\s*/ and 2112 $previndent == $indent) { 2113 my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0); 2114 2115 # Find out what is on the end of the line after the 2116 # conditional. 2117 substr($s, 0, length($c), ''); 2118 $s =~ s/\n.*//g; 2119 2120 if ($s =~ /^\s*;/) { 2121 ERROR("while should follow close brace '}'\n" . $hereprev); 2122 } 2123 } 2124 2125#studly caps, commented out until figure out how to distinguish between use of existing and adding new 2126# if (($line=~/[\w_][a-z\d]+[A-Z]/) and !($line=~/print/)) { 2127# print "No studly caps, use _\n"; 2128# print "$herecurr"; 2129# $clean = 0; 2130# } 2131 2132#no spaces allowed after \ in define 2133 if ($line=~/\#\s*define.*\\\s$/) { 2134 WARN("Whitepspace after \\ makes next lines useless\n" . $herecurr); 2135 } 2136 2137# multi-statement macros should be enclosed in a do while loop, grab the 2138# first statement and ensure its the whole macro if its not enclosed 2139# in a known good container 2140 if ($realfile !~ m@/vmlinux.lds.h$@ && 2141 $line =~ /^.\s*\#\s*define\s*$Ident(\()?/) { 2142 my $ln = $linenr; 2143 my $cnt = $realcnt; 2144 my ($off, $dstat, $dcond, $rest); 2145 my $ctx = ''; 2146 2147 my $args = defined($1); 2148 2149 # Find the end of the macro and limit our statement 2150 # search to that. 2151 while ($cnt > 0 && defined $lines[$ln - 1] && 2152 $lines[$ln - 1] =~ /^(?:-|..*\\$)/) 2153 { 2154 $ctx .= $rawlines[$ln - 1] . "\n"; 2155 $cnt-- if ($lines[$ln - 1] !~ /^-/); 2156 $ln++; 2157 } 2158 $ctx .= $rawlines[$ln - 1]; 2159 2160 ($dstat, $dcond, $ln, $cnt, $off) = 2161 ctx_statement_block($linenr, $ln - $linenr + 1, 0); 2162 #print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n"; 2163 #print "LINE<$lines[$ln-1]> len<" . length($lines[$ln-1]) . "\n"; 2164 2165 # Extract the remainder of the define (if any) and 2166 # rip off surrounding spaces, and trailing \'s. 2167 $rest = ''; 2168 while ($off != 0 || ($cnt > 0 && $rest =~ /\\\s*$/)) { 2169 #print "ADDING cnt<$cnt> $off <" . substr($lines[$ln - 1], $off) . "> rest<$rest>\n"; 2170 if ($off != 0 || $lines[$ln - 1] !~ /^-/) { 2171 $rest .= substr($lines[$ln - 1], $off) . "\n"; 2172 $cnt--; 2173 } 2174 $ln++; 2175 $off = 0; 2176 } 2177 $rest =~ s/\\\n.//g; 2178 $rest =~ s/^\s*//s; 2179 $rest =~ s/\s*$//s; 2180 2181 # Clean up the original statement. 2182 if ($args) { 2183 substr($dstat, 0, length($dcond), ''); 2184 } else { 2185 $dstat =~ s/^.\s*\#\s*define\s+$Ident\s*//; 2186 } 2187 $dstat =~ s/$;//g; 2188 $dstat =~ s/\\\n.//g; 2189 $dstat =~ s/^\s*//s; 2190 $dstat =~ s/\s*$//s; 2191 2192 # Flatten any parentheses and braces 2193 while ($dstat =~ s/\([^\(\)]*\)/1/ || 2194 $dstat =~ s/\{[^\{\}]*\}/1/ || 2195 $dstat =~ s/\[[^\{\}]*\]/1/) 2196 { 2197 } 2198 2199 my $exceptions = qr{ 2200 $Declare| 2201 module_param_named| 2202 MODULE_PARAM_DESC| 2203 DECLARE_PER_CPU| 2204 DEFINE_PER_CPU| 2205 __typeof__\(| 2206 union| 2207 struct| 2208 \.$Ident\s*=\s*| 2209 ^\"|\"$ 2210 }x; 2211 #print "REST<$rest> dstat<$dstat> ctx<$ctx>\n"; 2212 if ($rest ne '' && $rest ne ',') { 2213 if ($rest !~ /while\s*\(/ && 2214 $dstat !~ /$exceptions/) 2215 { 2216 ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n"); 2217 } 2218 2219 } elsif ($ctx !~ /;/) { 2220 if ($dstat ne '' && 2221 $dstat !~ /^(?:$Ident|-?$Constant)$/ && 2222 $dstat !~ /$exceptions/ && 2223 $dstat !~ /^\.$Ident\s*=/ && 2224 $dstat =~ /$Operators/) 2225 { 2226 ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n"); 2227 } 2228 } 2229 } 2230 2231# check for missing bracing round if etc 2232 if ($line =~ /(^.*)\bif\b/ && $line !~ /\#\s*if/) { 2233 my ($level, $endln, @chunks) = 2234 ctx_statement_full($linenr, $realcnt, 1); 2235 if ($dbg_adv_apw) { 2236 print "APW: chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n"; 2237 print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n" 2238 if $#chunks >= 1; 2239 } 2240 if ($#chunks >= 0 && $level == 0) { 2241 my $allowed = 0; 2242 my $seen = 0; 2243 my $herectx = $here . "\n"; 2244 my $ln = $linenr - 1; 2245 for my $chunk (@chunks) { 2246 my ($cond, $block) = @{$chunk}; 2247 2248 # If the condition carries leading newlines, then count those as offsets. 2249 my ($whitespace) = ($cond =~ /^((?:\s*\n[+-])*\s*)/s); 2250 my $offset = statement_rawlines($whitespace) - 1; 2251 2252 #print "COND<$cond> whitespace<$whitespace> offset<$offset>\n"; 2253 2254 # We have looked at and allowed this specific line. 2255 $suppress_ifbraces{$ln + $offset} = 1; 2256 2257 $herectx .= "$rawlines[$ln + $offset]\n[...]\n"; 2258 $ln += statement_rawlines($block) - 1; 2259 2260 substr($block, 0, length($cond), ''); 2261 2262 my $spaced_block = $block; 2263 $spaced_block =~ s/\n\+/ /g; 2264 2265 $seen++ if ($spaced_block =~ /^\s*\{/); 2266 2267 print "APW: cond<$cond> block<$block> allowed<$allowed>\n" 2268 if $dbg_adv_apw; 2269 if (statement_lines($cond) > 1) { 2270 print "APW: ALLOWED: cond<$cond>\n" 2271 if $dbg_adv_apw; 2272 $allowed = 1; 2273 } 2274 if ($block =~/\b(?:if|for|while)\b/) { 2275 print "APW: ALLOWED: block<$block>\n" 2276 if $dbg_adv_apw; 2277 $allowed = 1; 2278 } 2279 if (statement_block_size($block) > 1) { 2280 print "APW: ALLOWED: lines block<$block>\n" 2281 if $dbg_adv_apw; 2282 $allowed = 1; 2283 } 2284 } 2285 if ($seen != ($#chunks + 1)) { 2286 WARN("braces {} are necessary for all arms of this statement\n" . $herectx); 2287 } 2288 } 2289 } 2290 if (!defined $suppress_ifbraces{$linenr - 1} && 2291 $line =~ /\b(if|while|for|else)\b/ && 2292 $line !~ /\#\s*if/ && 2293 $line !~ /\#\s*else/) { 2294 my $allowed = 0; 2295 2296 # Check the pre-context. 2297 if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) { 2298 my $pre = $1; 2299 2300 if ($line !~ /else/) { 2301 print "APW: ALLOWED: pre<$pre> line<$line>\n" 2302 if $dbg_adv_apw; 2303 $allowed = 1; 2304 } 2305 } 2306 2307 my ($level, $endln, @chunks) = 2308 ctx_statement_full($linenr, $realcnt, $-[0]); 2309 2310 # Check the condition. 2311 my ($cond, $block) = @{$chunks[0]}; 2312 print "CHECKING<$linenr> cond<$cond> block<$block>\n" 2313 if $dbg_adv_checking; 2314 if (defined $cond) { 2315 substr($block, 0, length($cond), ''); 2316 } 2317 if (statement_lines($cond) > 1) { 2318 print "APW: ALLOWED: cond<$cond>\n" 2319 if $dbg_adv_apw; 2320 $allowed = 1; 2321 } 2322 if ($block =~/\b(?:if|for|while)\b/) { 2323 print "APW: ALLOWED: block<$block>\n" 2324 if $dbg_adv_apw; 2325 $allowed = 1; 2326 } 2327 if (statement_block_size($block) > 1) { 2328 print "APW: ALLOWED: lines block<$block>\n" 2329 if $dbg_adv_apw; 2330 $allowed = 1; 2331 } 2332 # Check the post-context. 2333 if (defined $chunks[1]) { 2334 my ($cond, $block) = @{$chunks[1]}; 2335 if (defined $cond) { 2336 substr($block, 0, length($cond), ''); 2337 } 2338 if ($block =~ /^\s*\{/) { 2339 print "APW: ALLOWED: chunk-1 block<$block>\n" 2340 if $dbg_adv_apw; 2341 $allowed = 1; 2342 } 2343 } 2344 print "DCS: level=$level block<$block> allowed=$allowed\n" 2345 if $dbg_adv_dcs; 2346 if ($level == 0 && $block !~ /^\s*\{/ && !$allowed) { 2347 my $herectx = $here . "\n";; 2348 my $cnt = statement_rawlines($block); 2349 2350 for (my $n = 0; $n < $cnt; $n++) { 2351 $herectx .= raw_line($linenr, $n) . "\n";; 2352 } 2353 2354 WARN("braces {} are necessary even for single statement blocks\n" . $herectx); 2355 } 2356 } 2357 2358# no volatiles please 2359 my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b}; 2360 if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) { 2361 WARN("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr); 2362 } 2363 2364# warn about #if 0 2365 if ($line =~ /^.\s*\#\s*if\s+0\b/) { 2366 WARN("if this code is redundant consider removing it\n" . 2367 $herecurr); 2368 } 2369 2370# check for needless g_free() checks 2371 if ($prevline =~ /\bif\s*\(([^\)]*)\)/) { 2372 my $expr = $1; 2373 if ($line =~ /\bg_free\(\Q$expr\E\);/) { 2374 WARN("g_free(NULL) is safe this check is probably not required\n" . $hereprev); 2375 } 2376 } 2377 2378# warn about #ifdefs in C files 2379# if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { 2380# print "#ifdef in C files should be avoided\n"; 2381# print "$herecurr"; 2382# $clean = 0; 2383# } 2384 2385# warn about spacing in #ifdefs 2386 if ($line =~ /^.\s*\#\s*(ifdef|ifndef|elif)\s\s+/) { 2387 ERROR("exactly one space required after that #$1\n" . $herecurr); 2388 } 2389# check for memory barriers without a comment. 2390 if ($line =~ /\b(smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) { 2391 if (!ctx_has_comment($first_line, $linenr)) { 2392 WARN("memory barrier without comment\n" . $herecurr); 2393 } 2394 } 2395# check of hardware specific defines 2396# we have e.g. CONFIG_LINUX and CONFIG_WIN32 for common cases 2397# where they might be necessary. 2398 if ($line =~ m@^.\s*\#\s*if.*\b__@) { 2399 WARN("architecture specific defines should be avoided\n" . $herecurr); 2400 } 2401 2402# Check that the storage class is at the beginning of a declaration 2403 if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) { 2404 WARN("storage class should be at the beginning of the declaration\n" . $herecurr) 2405 } 2406 2407# check the location of the inline attribute, that it is between 2408# storage class and type. 2409 if ($line =~ /\b$Type\s+$Inline\b/ || 2410 $line =~ /\b$Inline\s+$Storage\b/) { 2411 ERROR("inline keyword should sit between storage class and type\n" . $herecurr); 2412 } 2413 2414# check for sizeof(&) 2415 if ($line =~ /\bsizeof\s*\(\s*\&/) { 2416 WARN("sizeof(& should be avoided\n" . $herecurr); 2417 } 2418 2419# check for new externs in .c files. 2420 if ($realfile =~ /\.c$/ && defined $stat && 2421 $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s) 2422 { 2423 my $function_name = $1; 2424 my $paren_space = $2; 2425 2426 my $s = $stat; 2427 if (defined $cond) { 2428 substr($s, 0, length($cond), ''); 2429 } 2430 if ($s =~ /^\s*;/ && 2431 $function_name ne 'uninitialized_var') 2432 { 2433 WARN("externs should be avoided in .c files\n" . $herecurr); 2434 } 2435 2436 if ($paren_space =~ /\n/) { 2437 WARN("arguments for function declarations should follow identifier\n" . $herecurr); 2438 } 2439 2440 } elsif ($realfile =~ /\.c$/ && defined $stat && 2441 $stat =~ /^.\s*extern\s+/) 2442 { 2443 WARN("externs should be avoided in .c files\n" . $herecurr); 2444 } 2445 2446# check for pointless casting of g_malloc return 2447 if ($line =~ /\*\s*\)\s*g_(try)?(m|re)alloc(0?)(_n)?\b/) { 2448 if ($2 == 'm') { 2449 WARN("unnecessary cast may hide bugs, use g_$1new$3 instead\n" . $herecurr); 2450 } else { 2451 WARN("unnecessary cast may hide bugs, use g_$1renew$3 instead\n" . $herecurr); 2452 } 2453 } 2454 2455# check for gcc specific __FUNCTION__ 2456 if ($line =~ /__FUNCTION__/) { 2457 WARN("__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr); 2458 } 2459 2460# recommend qemu_strto* over strto* for numeric conversions 2461 if ($line =~ /\b(strto[^kd].*?)\s*\(/) { 2462 WARN("consider using qemu_$1 in preference to $1\n" . $herecurr); 2463 } 2464# check for module_init(), use category-specific init macros explicitly please 2465 if ($line =~ /^module_init\s*\(/) { 2466 WARN("please use block_init(), type_init() etc. instead of module_init()\n" . $herecurr); 2467 } 2468# check for various ops structs, ensure they are const. 2469 my $struct_ops = qr{AIOCBInfo| 2470 BdrvActionOps| 2471 BlockDevOps| 2472 BlockJobDriver| 2473 DisplayChangeListenerOps| 2474 GraphicHwOps| 2475 IDEDMAOps| 2476 KVMCapabilityInfo| 2477 MemoryRegionIOMMUOps| 2478 MemoryRegionOps| 2479 MemoryRegionPortio| 2480 QEMUFileOps| 2481 SCSIBusInfo| 2482 SCSIReqOps| 2483 Spice[A-Z][a-zA-Z0-9]*Interface| 2484 TPMDriverOps| 2485 USBDesc[A-Z][a-zA-Z0-9]*| 2486 VhostOps| 2487 VMStateDescription| 2488 VMStateInfo}x; 2489 if ($line !~ /\bconst\b/ && 2490 $line =~ /\b($struct_ops)\b/) { 2491 WARN("struct $1 should normally be const\n" . 2492 $herecurr); 2493 } 2494 2495# check for %L{u,d,i} in strings 2496 my $string; 2497 while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) { 2498 $string = substr($rawline, $-[1], $+[1] - $-[1]); 2499 $string =~ s/%%/__/g; 2500 if ($string =~ /(?<!%)%L[udi]/) { 2501 WARN("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr); 2502 last; 2503 } 2504 } 2505 2506# QEMU specific tests 2507 if ($rawline =~ /\b(?:Qemu|QEmu)\b/) { 2508 WARN("use QEMU instead of Qemu or QEmu\n" . $herecurr); 2509 } 2510 2511# Qemu error function tests 2512 2513 # Find newlines in error messages 2514 my $qemu_error_funcs = qr{error_setg| 2515 error_setg_errno| 2516 error_setg_win32| 2517 error_set| 2518 error_vreport| 2519 error_report}x; 2520 2521 if ($rawline =~ /\b(?:$qemu_error_funcs)\s*\(\s*\".*\\n/) { 2522 WARN("Error messages should not contain newlines\n" . $herecurr); 2523 } 2524 2525 # Continue checking for error messages that contains newlines. This 2526 # check handles cases where string literals are spread over multiple lines. 2527 # Example: 2528 # error_report("Error msg line #1" 2529 # "Error msg line #2\n"); 2530 my $quoted_newline_regex = qr{\+\s*\".*\\n.*\"}; 2531 my $continued_str_literal = qr{\+\s*\".*\"}; 2532 2533 if ($rawline =~ /$quoted_newline_regex/) { 2534 # Backtrack to first line that does not contain only a quoted literal 2535 # and assume that it is the start of the statement. 2536 my $i = $linenr - 2; 2537 2538 while (($i >= 0) & $rawlines[$i] =~ /$continued_str_literal/) { 2539 $i--; 2540 } 2541 2542 if ($rawlines[$i] =~ /\b(?:$qemu_error_funcs)\s*\(/) { 2543 WARN("Error messages should not contain newlines\n" . $herecurr); 2544 } 2545 } 2546 2547# check for non-portable ffs() calls that have portable alternatives in QEMU 2548 if ($line =~ /\bffs\(/) { 2549 ERROR("use ctz32() instead of ffs()\n" . $herecurr); 2550 } 2551 if ($line =~ /\bffsl\(/) { 2552 ERROR("use ctz32() or ctz64() instead of ffsl()\n" . $herecurr); 2553 } 2554 if ($line =~ /\bffsll\(/) { 2555 ERROR("use ctz64() instead of ffsll()\n" . $herecurr); 2556 } 2557 } 2558 2559 # If we have no input at all, then there is nothing to report on 2560 # so just keep quiet. 2561 if ($#rawlines == -1) { 2562 exit(0); 2563 } 2564 2565 # In mailback mode only produce a report in the negative, for 2566 # things that appear to be patches. 2567 if ($mailback && ($clean == 1 || !$is_patch)) { 2568 exit(0); 2569 } 2570 2571 # This is not a patch, and we are are in 'no-patch' mode so 2572 # just keep quiet. 2573 if (!$chk_patch && !$is_patch) { 2574 exit(0); 2575 } 2576 2577 if (!$is_patch) { 2578 ERROR("Does not appear to be a unified-diff format patch\n"); 2579 } 2580 if ($is_patch && $chk_signoff && $signoff == 0) { 2581 ERROR("Missing Signed-off-by: line(s)\n"); 2582 } 2583 2584 print report_dump(); 2585 if ($summary && !($clean == 1 && $quiet == 1)) { 2586 print "$filename " if ($summary_file); 2587 print "total: $cnt_error errors, $cnt_warn warnings, " . 2588 (($check)? "$cnt_chk checks, " : "") . 2589 "$cnt_lines lines checked\n"; 2590 print "\n" if ($quiet == 0); 2591 } 2592 2593 if ($quiet == 0) { 2594 # If there were whitespace errors which cleanpatch can fix 2595 # then suggest that. 2596# if ($rpt_cleaners) { 2597# print "NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or\n"; 2598# print " scripts/cleanfile\n\n"; 2599# } 2600 } 2601 2602 if ($clean == 1 && $quiet == 0) { 2603 print "$vname has no obvious style problems and is ready for submission.\n" 2604 } 2605 if ($clean == 0 && $quiet == 0) { 2606 print "$vname has style problems, please review. If any of these errors\n"; 2607 print "are false positives report them to the maintainer, see\n"; 2608 print "CHECKPATCH in MAINTAINERS.\n"; 2609 } 2610 2611 return $clean; 2612} 2613