projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1ec3f6f9 BS |
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 | ||
| 8 | use strict; | |
| 9 | ||
| 10 | my $P = $0; | |
| 11 | $P =~ s@.*/@@g; | |
| 12 | ||
| 13 | my $V = '0.31'; | |
| 14 | ||
| 15 | use Getopt::Long qw(:config no_auto_abbrev); | |
| 16 | ||
| 17 | my $quiet = 0; | |
| 18 | my $tree = 1; | |
| 19 | my $chk_signoff = 1; | |
| 20 | my $chk_patch = 1; | |
| 21 | my $tst_only; | |
| 22 | my $emacs = 0; | |
| 23 | my $terse = 0; | |
| 24 | my $file = 0; | |
| 25 | my $check = 0; | |
| 26 | my $summary = 1; | |
| 27 | my $mailback = 0; | |
| 28 | my $summary_file = 0; | |
| 29 | my $root; | |
| 30 | my %debug; | |
| 31 | my $help = 0; | |
| 32 | ||
| 33 | sub help { | |
| 34 | my ($exitcode) = @_; | |
| 35 | ||
| 36 | print << "EOM"; | |
| 37 | Usage: $P [OPTION]... [FILE]... | |
| 38 | Version: $V | |
| 39 | ||
| 40 | Options: | |
| 41 | -q, --quiet quiet | |
| 42 | --no-tree run without a kernel tree | |
| 43 | --no-signoff do not check for 'Signed-off-by' line | |
| 44 | --patch treat FILE as patchfile (default) | |
| 45 | --emacs emacs compile window format | |
| 46 | --terse one line per report | |
| 47 | -f, --file treat FILE as regular source file | |
| 48 | --subjective, --strict enable more subjective tests | |
| 49 | --root=PATH PATH to the kernel tree root | |
| 50 | --no-summary suppress the per-file summary | |
| 51 | --mailback only produce a report in case of warnings/errors | |
| 52 | --summary-file include the filename in summary | |
| 53 | --debug KEY=[0|1] turn on/off debugging of KEY, where KEY is one of | |
| 54 | 'values', 'possible', 'type', and 'attr' (default | |
| 55 | is all off) | |
| 56 | --test-only=WORD report only warnings/errors containing WORD | |
| 57 | literally | |
| 58 | -h, --help, --version display this help and exit | |
| 59 | ||
| 60 | When FILE is - read standard input. | |
| 61 | EOM | |
| 62 | ||
| 63 | exit($exitcode); | |
| 64 | } | |
| 65 | ||
| 66 | GetOptions( | |
| 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 | ||
| 87 | help(0) if ($help); | |
| 88 | ||
| 89 | my $exit = 0; | |
| 90 | ||
| 91 | if ($#ARGV < 0) { | |
| 92 | print "$P: no input files\n"; | |
| 93 | exit(1); | |
| 94 | } | |
| 95 | ||
| 96 | my $dbg_values = 0; | |
| 97 | my $dbg_possible = 0; | |
| 98 | my $dbg_type = 0; | |
| 99 | my $dbg_attr = 0; | |
| a99ac041 | 100 | my $dbg_adv_dcs = 0; |
| 5424302e | 101 | my $dbg_adv_checking = 0; |
| 69402a69 | 102 | my $dbg_adv_apw = 0; |
| 1ec3f6f9 BS |
103 | for my $key (keys %debug) { |
| 104 | ## no critic | |
| 105 | eval "\${dbg_$key} = '$debug{$key}';"; | |
| 106 | die "$@" if ($@); | |
| 107 | } | |
| 108 | ||
| 109 | my $rpt_cleaners = 0; | |
| 110 | ||
| 111 | if ($terse) { | |
| 112 | $emacs = 1; | |
| 113 | $quiet++; | |
| 114 | } | |
| 115 | ||
| 116 | if ($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 | ||
| 136 | my $emitted_corrupt = 0; | |
| 137 | ||
| 138 | our $Ident = qr{ | |
| 139 | [A-Za-z_][A-Za-z\d_]* | |
| 140 | (?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)* | |
| 141 | }x; | |
| 142 | our $Storage = qr{extern|static|asmlinkage}; | |
| 143 | our $Sparse = qr{ | |
| 144 | __user| | |
| 145 | __kernel| | |
| 146 | __force| | |
| 147 | __iomem| | |
| 148 | __must_check| | |
| 149 | __init_refok| | |
| 150 | __kprobes| | |
| 151 | __ref | |
| 152 | }x; | |
| 153 | ||
| 154 | # Notes to $Attribute: | |
| 1ec3f6f9 BS |
155 | our $Attribute = qr{ |
| 156 | const| | |
| 71c47b01 PB |
157 | volatile| |
| 158 | QEMU_NORETURN| | |
| 159 | QEMU_WARN_UNUSED_RESULT| | |
| 160 | QEMU_SENTINEL| | |
| 161 | QEMU_ARTIFICIAL| | |
| 162 | QEMU_PACKED| | |
| 163 | GCC_FMT_ATTR | |
| 1ec3f6f9 BS |
164 | }x; |
| 165 | our $Modifier; | |
| 71c47b01 | 166 | our $Inline = qr{inline}; |
| 1ec3f6f9 BS |
167 | our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]}; |
| 168 | our $Lval = qr{$Ident(?:$Member)*}; | |
| 169 | ||
| 170 | our $Constant = qr{(?:[0-9]+|0x[0-9a-fA-F]+)[UL]*}; | |
| 171 | our $Assignment = qr{(?:\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=)}; | |
| 172 | our $Compare = qr{<=|>=|==|!=|<|>}; | |
| 173 | our $Operators = qr{ | |
| 174 | <=|>=|==|!=| | |
| 175 | =>|->|<<|>>|<|>|!|~| | |
| 176 | &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|% | |
| 177 | }x; | |
| 178 | ||
| 179 | our $NonptrType; | |
| 180 | our $Type; | |
| 181 | our $Declare; | |
| 182 | ||
| 183 | our $UTF8 = qr { | |
| 184 | [\x09\x0A\x0D\x20-\x7E] # ASCII | |
| 185 | | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte | |
| 186 | | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs | |
| 187 | | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte | |
| 188 | | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates | |
| 189 | | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3 | |
| 190 | | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15 | |
| 191 | | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16 | |
| 192 | }x; | |
| 193 | ||
| a6859deb PB |
194 | # There are still some false positives, but this catches most |
| 195 | # common cases. | |
| 1ec3f6f9 | 196 | our $typeTypedefs = qr{(?x: |
| a6859deb PB |
197 | [A-Z][A-Z\d_]*[a-z][A-Za-z\d_]* # camelcase |
| 198 | | [A-Z][A-Z\d_]*AIOCB # all uppercase | |
| 199 | | [A-Z][A-Z\d_]*CPU # all uppercase | |
| 200 | | QEMUBH # all uppercase | |
| 1ec3f6f9 BS |
201 | )}; |
| 202 | ||
| 203 | our $logFunctions = qr{(?x: | |
| 204 | printk| | |
| 205 | pr_(debug|dbg|vdbg|devel|info|warning|err|notice|alert|crit|emerg|cont)| | |
| 206 | (dev|netdev|netif)_(printk|dbg|vdbg|info|warn|err|notice|alert|crit|emerg|WARN)| | |
| 207 | WARN| | |
| 208 | panic | |
| 209 | )}; | |
| 210 | ||
| 211 | our @typeList = ( | |
| 212 | qr{void}, | |
| 213 | qr{(?:unsigned\s+)?char}, | |
| 214 | qr{(?:unsigned\s+)?short}, | |
| 215 | qr{(?:unsigned\s+)?int}, | |
| 216 | qr{(?:unsigned\s+)?long}, | |
| 217 | qr{(?:unsigned\s+)?long\s+int}, | |
| 218 | qr{(?:unsigned\s+)?long\s+long}, | |
| 219 | qr{(?:unsigned\s+)?long\s+long\s+int}, | |
| 220 | qr{unsigned}, | |
| 221 | qr{float}, | |
| 222 | qr{double}, | |
| 223 | qr{bool}, | |
| 224 | qr{struct\s+$Ident}, | |
| 225 | qr{union\s+$Ident}, | |
| 226 | qr{enum\s+$Ident}, | |
| 227 | qr{${Ident}_t}, | |
| 228 | qr{${Ident}_handler}, | |
| 229 | qr{${Ident}_handler_fn}, | |
| 230 | ); | |
| 231 | our @modifierList = ( | |
| 232 | qr{fastcall}, | |
| 233 | ); | |
| 234 | ||
| 235 | our $allowed_asm_includes = qr{(?x: | |
| 236 | irq| | |
| 237 | memory | |
| 238 | )}; | |
| 239 | # memory.h: ARM has a custom one | |
| 240 | ||
| 241 | sub build_types { | |
| 242 | my $mods = "(?x: \n" . join("|\n ", @modifierList) . "\n)"; | |
| 243 | my $all = "(?x: \n" . join("|\n ", @typeList) . "\n)"; | |
| 244 | $Modifier = qr{(?:$Attribute|$Sparse|$mods)}; | |
| 245 | $NonptrType = qr{ | |
| 246 | (?:$Modifier\s+|const\s+)* | |
| 247 | (?: | |
| 248 | (?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)| | |
| 249 | (?:$typeTypedefs\b)| | |
| 250 | (?:${all}\b) | |
| 251 | ) | |
| 252 | (?:\s+$Modifier|\s+const)* | |
| 253 | }x; | |
| 254 | $Type = qr{ | |
| 255 | $NonptrType | |
| 256 | (?:[\s\*]+\s*const|[\s\*]+|(?:\s*\[\s*\])+)? | |
| 257 | (?:\s+$Inline|\s+$Modifier)* | |
| 258 | }x; | |
| 259 | $Declare = qr{(?:$Storage\s+)?$Type}; | |
| 260 | } | |
| 261 | build_types(); | |
| 262 | ||
| 263 | $chk_signoff = 0 if ($file); | |
| 264 | ||
| 265 | my @dep_includes = (); | |
| 266 | my @dep_functions = (); | |
| 267 | my $removal = "Documentation/feature-removal-schedule.txt"; | |
| 268 | if ($tree && -f "$root/$removal") { | |
| 269 | open(my $REMOVE, '<', "$root/$removal") || | |
| 270 | die "$P: $removal: open failed - $!\n"; | |
| 271 | while (<$REMOVE>) { | |
| 272 | if (/^Check:\s+(.*\S)/) { | |
| 273 | for my $entry (split(/[, ]+/, $1)) { | |
| 274 | if ($entry =~ m@include/(.*)@) { | |
| 275 | push(@dep_includes, $1); | |
| 276 | ||
| 277 | } elsif ($entry !~ m@/@) { | |
| 278 | push(@dep_functions, $entry); | |
| 279 | } | |
| 280 | } | |
| 281 | } | |
| 282 | } | |
| 283 | close($REMOVE); | |
| 284 | } | |
| 285 | ||
| 286 | my @rawlines = (); | |
| 287 | my @lines = (); | |
| 288 | my $vname; | |
| 289 | for my $filename (@ARGV) { | |
| 290 | my $FILE; | |
| 291 | if ($file) { | |
| 292 | open($FILE, '-|', "diff -u /dev/null $filename") || | |
| 293 | die "$P: $filename: diff failed - $!\n"; | |
| 294 | } elsif ($filename eq '-') { | |
| 295 | open($FILE, '<&STDIN'); | |
| 296 | } else { | |
| 297 | open($FILE, '<', "$filename") || | |
| 298 | die "$P: $filename: open failed - $!\n"; | |
| 299 | } | |
| 300 | if ($filename eq '-') { | |
| 301 | $vname = 'Your patch'; | |
| 302 | } else { | |
| 303 | $vname = $filename; | |
| 304 | } | |
| 305 | while (<$FILE>) { | |
| 306 | chomp; | |
| 307 | push(@rawlines, $_); | |
| 308 | } | |
| 309 | close($FILE); | |
| 310 | if (!process($filename)) { | |
| 311 | $exit = 1; | |
| 312 | } | |
| 313 | @rawlines = (); | |
| 314 | @lines = (); | |
| 315 | } | |
| 316 | ||
| 317 | exit($exit); | |
| 318 | ||
| 319 | sub top_of_kernel_tree { | |
| 320 | my ($root) = @_; | |
| 321 | ||
| 322 | my @tree_check = ( | |
| b6469683 BS |
323 | "COPYING", "MAINTAINERS", "Makefile", |
| 324 | "README", "docs", "VERSION", | |
| 325 | "vl.c" | |
| 1ec3f6f9 BS |
326 | ); |
| 327 | ||
| 328 | foreach my $check (@tree_check) { | |
| 329 | if (! -e $root . '/' . $check) { | |
| 330 | return 0; | |
| 331 | } | |
| 332 | } | |
| 333 | return 1; | |
| 334 | } | |
| 335 | ||
| 336 | sub expand_tabs { | |
| 337 | my ($str) = @_; | |
| 338 | ||
| 339 | my $res = ''; | |
| 340 | my $n = 0; | |
| 341 | for my $c (split(//, $str)) { | |
| 342 | if ($c eq "\t") { | |
| 343 | $res .= ' '; | |
| 344 | $n++; | |
| 345 | for (; ($n % 8) != 0; $n++) { | |
| 346 | $res .= ' '; | |
| 347 | } | |
| 348 | next; | |
| 349 | } | |
| 350 | $res .= $c; | |
| 351 | $n++; | |
| 352 | } | |
| 353 | ||
| 354 | return $res; | |
| 355 | } | |
| 356 | sub copy_spacing { | |
| 357 | (my $res = shift) =~ tr/\t/ /c; | |
| 358 | return $res; | |
| 359 | } | |
| 360 | ||
| 361 | sub line_stats { | |
| 362 | my ($line) = @_; | |
| 363 | ||
| 364 | # Drop the diff line leader and expand tabs | |
| 365 | $line =~ s/^.//; | |
| 366 | $line = expand_tabs($line); | |
| 367 | ||
| 368 | # Pick the indent from the front of the line. | |
| 369 | my ($white) = ($line =~ /^(\s*)/); | |
| 370 | ||
| 371 | return (length($line), length($white)); | |
| 372 | } | |
| 373 | ||
| 374 | my $sanitise_quote = ''; | |
| 375 | ||
| 376 | sub sanitise_line_reset { | |
| 377 | my ($in_comment) = @_; | |
| 378 | ||
| 379 | if ($in_comment) { | |
| 380 | $sanitise_quote = '*/'; | |
| 381 | } else { | |
| 382 | $sanitise_quote = ''; | |
| 383 | } | |
| 384 | } | |
| 385 | sub sanitise_line { | |
| 386 | my ($line) = @_; | |
| 387 | ||
| 388 | my $res = ''; | |
| 389 | my $l = ''; | |
| 390 | ||
| 391 | my $qlen = 0; | |
| 392 | my $off = 0; | |
| 393 | my $c; | |
| 394 | ||
| 395 | # Always copy over the diff marker. | |
| 396 | $res = substr($line, 0, 1); | |
| 397 | ||
| 398 | for ($off = 1; $off < length($line); $off++) { | |
| 399 | $c = substr($line, $off, 1); | |
| 400 | ||
| 401 | # Comments we are wacking completly including the begin | |
| 402 | # and end, all to $;. | |
| 403 | if ($sanitise_quote eq '' && substr($line, $off, 2) eq '/*') { | |
| 404 | $sanitise_quote = '*/'; | |
| 405 | ||
| 406 | substr($res, $off, 2, "$;$;"); | |
| 407 | $off++; | |
| 408 | next; | |
| 409 | } | |
| 410 | if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') { | |
| 411 | $sanitise_quote = ''; | |
| 412 | substr($res, $off, 2, "$;$;"); | |
| 413 | $off++; | |
| 414 | next; | |
| 415 | } | |
| 416 | if ($sanitise_quote eq '' && substr($line, $off, 2) eq '//') { | |
| 417 | $sanitise_quote = '//'; | |
| 418 | ||
| 419 | substr($res, $off, 2, $sanitise_quote); | |
| 420 | $off++; | |
| 421 | next; | |
| 422 | } | |
| 423 | ||
| 424 | # A \ in a string means ignore the next character. | |
| 425 | if (($sanitise_quote eq "'" || $sanitise_quote eq '"') && | |
| 426 | $c eq "\\") { | |
| 427 | substr($res, $off, 2, 'XX'); | |
| 428 | $off++; | |
| 429 | next; | |
| 430 | } | |
| 431 | # Regular quotes. | |
| 432 | if ($c eq "'" || $c eq '"') { | |
| 433 | if ($sanitise_quote eq '') { | |
| 434 | $sanitise_quote = $c; | |
| 435 | ||
| 436 | substr($res, $off, 1, $c); | |
| 437 | next; | |
| 438 | } elsif ($sanitise_quote eq $c) { | |
| 439 | $sanitise_quote = ''; | |
| 440 | } | |
| 441 | } | |
| 442 | ||
| 443 | #print "c<$c> SQ<$sanitise_quote>\n"; | |
| 444 | if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") { | |
| 445 | substr($res, $off, 1, $;); | |
| 446 | } elsif ($off != 0 && $sanitise_quote eq '//' && $c ne "\t") { | |
| 447 | substr($res, $off, 1, $;); | |
| 448 | } elsif ($off != 0 && $sanitise_quote && $c ne "\t") { | |
| 449 | substr($res, $off, 1, 'X'); | |
| 450 | } else { | |
| 451 | substr($res, $off, 1, $c); | |
| 452 | } | |
| 453 | } | |
| 454 | ||
| 455 | if ($sanitise_quote eq '//') { | |
| 456 | $sanitise_quote = ''; | |
| 457 | } | |
| 458 | ||
| 459 | # The pathname on a #include may be surrounded by '<' and '>'. | |
| 460 | if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) { | |
| 461 | my $clean = 'X' x length($1); | |
| 462 | $res =~ s@\<.*\>@<$clean>@; | |
| 463 | ||
| 464 | # The whole of a #error is a string. | |
| 465 | } elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) { | |
| 466 | my $clean = 'X' x length($1); | |
| 467 | $res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@; | |
| 468 | } | |
| 469 | ||
| 470 | return $res; | |
| 471 | } | |
| 472 | ||
| 473 | sub ctx_statement_block { | |
| 474 | my ($linenr, $remain, $off) = @_; | |
| 475 | my $line = $linenr - 1; | |
| 476 | my $blk = ''; | |
| 477 | my $soff = $off; | |
| 478 | my $coff = $off - 1; | |
| 479 | my $coff_set = 0; | |
| 480 | ||
| 481 | my $loff = 0; | |
| 482 | ||
| 483 | my $type = ''; | |
| 484 | my $level = 0; | |
| 485 | my @stack = (); | |
| 486 | my $p; | |
| 487 | my $c; | |
| 488 | my $len = 0; | |
| 489 | ||
| 490 | my $remainder; | |
| 491 | while (1) { | |
| 492 | @stack = (['', 0]) if ($#stack == -1); | |
| 493 | ||
| 494 | #warn "CSB: blk<$blk> remain<$remain>\n"; | |
| 495 | # If we are about to drop off the end, pull in more | |
| 496 | # context. | |
| 497 | if ($off >= $len) { | |
| 498 | for (; $remain > 0; $line++) { | |
| 499 | last if (!defined $lines[$line]); | |
| 500 | next if ($lines[$line] =~ /^-/); | |
| 501 | $remain--; | |
| 502 | $loff = $len; | |
| 503 | $blk .= $lines[$line] . "\n"; | |
| 504 | $len = length($blk); | |
| 505 | $line++; | |
| 506 | last; | |
| 507 | } | |
| 508 | # Bail if there is no further context. | |
| 509 | #warn "CSB: blk<$blk> off<$off> len<$len>\n"; | |
| 510 | if ($off >= $len) { | |
| 511 | last; | |
| 512 | } | |
| 513 | } | |
| 514 | $p = $c; | |
| 515 | $c = substr($blk, $off, 1); | |
| 516 | $remainder = substr($blk, $off); | |
| 517 | ||
| 518 | #warn "CSB: c<$c> type<$type> level<$level> remainder<$remainder> coff_set<$coff_set>\n"; | |
| 519 | ||
| 520 | # Handle nested #if/#else. | |
| 521 | if ($remainder =~ /^#\s*(?:ifndef|ifdef|if)\s/) { | |
| 522 | push(@stack, [ $type, $level ]); | |
| 523 | } elsif ($remainder =~ /^#\s*(?:else|elif)\b/) { | |
| 524 | ($type, $level) = @{$stack[$#stack - 1]}; | |
| 525 | } elsif ($remainder =~ /^#\s*endif\b/) { | |
| 526 | ($type, $level) = @{pop(@stack)}; | |
| 527 | } | |
| 528 | ||
| 529 | # Statement ends at the ';' or a close '}' at the | |
| 530 | # outermost level. | |
| 531 | if ($level == 0 && $c eq ';') { | |
| 532 | last; | |
| 533 | } | |
| 534 | ||
| 535 | # An else is really a conditional as long as its not else if | |
| 536 | if ($level == 0 && $coff_set == 0 && | |
| 537 | (!defined($p) || $p =~ /(?:\s|\}|\+)/) && | |
| 538 | $remainder =~ /^(else)(?:\s|{)/ && | |
| 539 | $remainder !~ /^else\s+if\b/) { | |
| 540 | $coff = $off + length($1) - 1; | |
| 541 | $coff_set = 1; | |
| 542 | #warn "CSB: mark coff<$coff> soff<$soff> 1<$1>\n"; | |
| 543 | #warn "[" . substr($blk, $soff, $coff - $soff + 1) . "]\n"; | |
| 544 | } | |
| 545 | ||
| 546 | if (($type eq '' || $type eq '(') && $c eq '(') { | |
| 547 | $level++; | |
| 548 | $type = '('; | |
| 549 | } | |
| 550 | if ($type eq '(' && $c eq ')') { | |
| 551 | $level--; | |
| 552 | $type = ($level != 0)? '(' : ''; | |
| 553 | ||
| 554 | if ($level == 0 && $coff < $soff) { | |
| 555 | $coff = $off; | |
| 556 | $coff_set = 1; | |
| 557 | #warn "CSB: mark coff<$coff>\n"; | |
| 558 | } | |
| 559 | } | |
| 560 | if (($type eq '' || $type eq '{') && $c eq '{') { | |
| 561 | $level++; | |
| 562 | $type = '{'; | |
| 563 | } | |
| 564 | if ($type eq '{' && $c eq '}') { | |
| 565 | $level--; | |
| 566 | $type = ($level != 0)? '{' : ''; | |
| 567 | ||
| 568 | if ($level == 0) { | |
| 569 | if (substr($blk, $off + 1, 1) eq ';') { | |
| 570 | $off++; | |
| 571 | } | |
| 572 | last; | |
| 573 | } | |
| 574 | } | |
| 575 | $off++; | |
| 576 | } | |
| 577 | # We are truly at the end, so shuffle to the next line. | |
| 578 | if ($off == $len) { | |
| 579 | $loff = $len + 1; | |
| 580 | $line++; | |
| 581 | $remain--; | |
| 582 | } | |
| 583 | ||
| 584 | my $statement = substr($blk, $soff, $off - $soff + 1); | |
| 585 | my $condition = substr($blk, $soff, $coff - $soff + 1); | |
| 586 | ||
| 587 | #warn "STATEMENT<$statement>\n"; | |
| 588 | #warn "CONDITION<$condition>\n"; | |
| 589 | ||
| 590 | #print "coff<$coff> soff<$off> loff<$loff>\n"; | |
| 591 | ||
| 592 | return ($statement, $condition, | |
| 593 | $line, $remain + 1, $off - $loff + 1, $level); | |
| 594 | } | |
| 595 | ||
| 596 | sub statement_lines { | |
| 597 | my ($stmt) = @_; | |
| 598 | ||
| 599 | # Strip the diff line prefixes and rip blank lines at start and end. | |
| 600 | $stmt =~ s/(^|\n)./$1/g; | |
| 601 | $stmt =~ s/^\s*//; | |
| 602 | $stmt =~ s/\s*$//; | |
| 603 | ||
| 604 | my @stmt_lines = ($stmt =~ /\n/g); | |
| 605 | ||
| 606 | return $#stmt_lines + 2; | |
| 607 | } | |
| 608 | ||
| 609 | sub statement_rawlines { | |
| 610 | my ($stmt) = @_; | |
| 611 | ||
| 612 | my @stmt_lines = ($stmt =~ /\n/g); | |
| 613 | ||
| 614 | return $#stmt_lines + 2; | |
| 615 | } | |
| 616 | ||
| 617 | sub statement_block_size { | |
| 618 | my ($stmt) = @_; | |
| 619 | ||
| 620 | $stmt =~ s/(^|\n)./$1/g; | |
| 621 | $stmt =~ s/^\s*{//; | |
| 622 | $stmt =~ s/}\s*$//; | |
| 623 | $stmt =~ s/^\s*//; | |
| 624 | $stmt =~ s/\s*$//; | |
| 625 | ||
| 626 | my @stmt_lines = ($stmt =~ /\n/g); | |
| 627 | my @stmt_statements = ($stmt =~ /;/g); | |
| 628 | ||
| 629 | my $stmt_lines = $#stmt_lines + 2; | |
| 630 | my $stmt_statements = $#stmt_statements + 1; | |
| 631 | ||
| 632 | if ($stmt_lines > $stmt_statements) { | |
| 633 | return $stmt_lines; | |
| 634 | } else { | |
| 635 | return $stmt_statements; | |
| 636 | } | |
| 637 | } | |
| 638 | ||
| 639 | sub ctx_statement_full { | |
| 640 | my ($linenr, $remain, $off) = @_; | |
| 641 | my ($statement, $condition, $level); | |
| 642 | ||
| 643 | my (@chunks); | |
| 644 | ||
| 645 | # Grab the first conditional/block pair. | |
| 646 | ($statement, $condition, $linenr, $remain, $off, $level) = | |
| 647 | ctx_statement_block($linenr, $remain, $off); | |
| 648 | #print "F: c<$condition> s<$statement> remain<$remain>\n"; | |
| 649 | push(@chunks, [ $condition, $statement ]); | |
| 650 | if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) { | |
| 651 | return ($level, $linenr, @chunks); | |
| 652 | } | |
| 653 | ||
| 654 | # Pull in the following conditional/block pairs and see if they | |
| 655 | # could continue the statement. | |
| 656 | for (;;) { | |
| 657 | ($statement, $condition, $linenr, $remain, $off, $level) = | |
| 658 | ctx_statement_block($linenr, $remain, $off); | |
| 659 | #print "C: c<$condition> s<$statement> remain<$remain>\n"; | |
| 660 | last if (!($remain > 0 && $condition =~ /^(?:\s*\n[+-])*\s*(?:else|do)\b/s)); | |
| 661 | #print "C: push\n"; | |
| 662 | push(@chunks, [ $condition, $statement ]); | |
| 663 | } | |
| 664 | ||
| 665 | return ($level, $linenr, @chunks); | |
| 666 | } | |
| 667 | ||
| 668 | sub ctx_block_get { | |
| 669 | my ($linenr, $remain, $outer, $open, $close, $off) = @_; | |
| 670 | my $line; | |
| 671 | my $start = $linenr - 1; | |
| 672 | my $blk = ''; | |
| 673 | my @o; | |
| 674 | my @c; | |
| 675 | my @res = (); | |
| 676 | ||
| 677 | my $level = 0; | |
| 678 | my @stack = ($level); | |
| 679 | for ($line = $start; $remain > 0; $line++) { | |
| 680 | next if ($rawlines[$line] =~ /^-/); | |
| 681 | $remain--; | |
| 682 | ||
| 683 | $blk .= $rawlines[$line]; | |
| 684 | ||
| 685 | # Handle nested #if/#else. | |
| 686 | if ($lines[$line] =~ /^.\s*#\s*(?:ifndef|ifdef|if)\s/) { | |
| 687 | push(@stack, $level); | |
| 688 | } elsif ($lines[$line] =~ /^.\s*#\s*(?:else|elif)\b/) { | |
| 689 | $level = $stack[$#stack - 1]; | |
| 690 | } elsif ($lines[$line] =~ /^.\s*#\s*endif\b/) { | |
| 691 | $level = pop(@stack); | |
| 692 | } | |
| 693 | ||
| 694 | foreach my $c (split(//, $lines[$line])) { | |
| 695 | ##print "C<$c>L<$level><$open$close>O<$off>\n"; | |
| 696 | if ($off > 0) { | |
| 697 | $off--; | |
| 698 | next; | |
| 699 | } | |
| 700 | ||
| 701 | if ($c eq $close && $level > 0) { | |
| 702 | $level--; | |
| 703 | last if ($level == 0); | |
| 704 | } elsif ($c eq $open) { | |
| 705 | $level++; | |
| 706 | } | |
| 707 | } | |
| 708 | ||
| 709 | if (!$outer || $level <= 1) { | |
| 710 | push(@res, $rawlines[$line]); | |
| 711 | } | |
| 712 | ||
| 713 | last if ($level == 0); | |
| 714 | } | |
| 715 | ||
| 716 | return ($level, @res); | |
| 717 | } | |
| 718 | sub ctx_block_outer { | |
| 719 | my ($linenr, $remain) = @_; | |
| 720 | ||
| 721 | my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0); | |
| 722 | return @r; | |
| 723 | } | |
| 724 | sub ctx_block { | |
| 725 | my ($linenr, $remain) = @_; | |
| 726 | ||
| 727 | my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0); | |
| 728 | return @r; | |
| 729 | } | |
| 730 | sub ctx_statement { | |
| 731 | my ($linenr, $remain, $off) = @_; | |
| 732 | ||
| 733 | my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off); | |
| 734 | return @r; | |
| 735 | } | |
| 736 | sub ctx_block_level { | |
| 737 | my ($linenr, $remain) = @_; | |
| 738 | ||
| 739 | return ctx_block_get($linenr, $remain, 0, '{', '}', 0); | |
| 740 | } | |
| 741 | sub ctx_statement_level { | |
| 742 | my ($linenr, $remain, $off) = @_; | |
| 743 | ||
| 744 | return ctx_block_get($linenr, $remain, 0, '(', ')', $off); | |
| 745 | } | |
| 746 | ||
| 747 | sub ctx_locate_comment { | |
| 748 | my ($first_line, $end_line) = @_; | |
| 749 | ||
| 750 | # Catch a comment on the end of the line itself. | |
| 751 | my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@); | |
| 752 | return $current_comment if (defined $current_comment); | |
| 753 | ||
| 754 | # Look through the context and try and figure out if there is a | |
| 755 | # comment. | |
| 756 | my $in_comment = 0; | |
| 757 | $current_comment = ''; | |
| 758 | for (my $linenr = $first_line; $linenr < $end_line; $linenr++) { | |
| 759 | my $line = $rawlines[$linenr - 1]; | |
| 760 | #warn " $line\n"; | |
| 761 | if ($linenr == $first_line and $line =~ m@^.\s*\*@) { | |
| 762 | $in_comment = 1; | |
| 763 | } | |
| 764 | if ($line =~ m@/\*@) { | |
| 765 | $in_comment = 1; | |
| 766 | } | |
| 767 | if (!$in_comment && $current_comment ne '') { | |
| 768 | $current_comment = ''; | |
| 769 | } | |
| 770 | $current_comment .= $line . "\n" if ($in_comment); | |
| 771 | if ($line =~ m@\*/@) { | |
| 772 | $in_comment = 0; | |
| 773 | } | |
| 774 | } | |
| 775 | ||
| 776 | chomp($current_comment); | |
| 777 | return($current_comment); | |
| 778 | } | |
| 779 | sub ctx_has_comment { | |
| 780 | my ($first_line, $end_line) = @_; | |
| 781 | my $cmt = ctx_locate_comment($first_line, $end_line); | |
| 782 | ||
| 783 | ##print "LINE: $rawlines[$end_line - 1 ]\n"; | |
| 784 | ##print "CMMT: $cmt\n"; | |
| 785 | ||
| 786 | return ($cmt ne ''); | |
| 787 | } | |
| 788 | ||
| 789 | sub raw_line { | |
| 790 | my ($linenr, $cnt) = @_; | |
| 791 | ||
| 792 | my $offset = $linenr - 1; | |
| 793 | $cnt++; | |
| 794 | ||
| 795 | my $line; | |
| 796 | while ($cnt) { | |
| 797 | $line = $rawlines[$offset++]; | |
| 798 | next if (defined($line) && $line =~ /^-/); | |
| 799 | $cnt--; | |
| 800 | } | |
| 801 | ||
| 802 | return $line; | |
| 803 | } | |
| 804 | ||
| 805 | sub cat_vet { | |
| 806 | my ($vet) = @_; | |
| 807 | my ($res, $coded); | |
| 808 | ||
| 809 | $res = ''; | |
| 810 | while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) { | |
| 811 | $res .= $1; | |
| 812 | if ($2 ne '') { | |
| 813 | $coded = sprintf("^%c", unpack('C', $2) + 64); | |
| 814 | $res .= $coded; | |
| 815 | } | |
| 816 | } | |
| 817 | $res =~ s/$/\$/; | |
| 818 | ||
| 819 | return $res; | |
| 820 | } | |
| 821 | ||
| 822 | my $av_preprocessor = 0; | |
| 823 | my $av_pending; | |
| 824 | my @av_paren_type; | |
| 825 | my $av_pend_colon; | |
| 826 | ||
| 827 | sub annotate_reset { | |
| 828 | $av_preprocessor = 0; | |
| 829 | $av_pending = '_'; | |
| 830 | @av_paren_type = ('E'); | |
| 831 | $av_pend_colon = 'O'; | |
| 832 | } | |
| 833 | ||
| 834 | sub annotate_values { | |
| 835 | my ($stream, $type) = @_; | |
| 836 | ||
| 837 | my $res; | |
| 838 | my $var = '_' x length($stream); | |
| 839 | my $cur = $stream; | |
| 840 | ||
| 841 | print "$stream\n" if ($dbg_values > 1); | |
| 842 | ||
| 843 | while (length($cur)) { | |
| 844 | @av_paren_type = ('E') if ($#av_paren_type < 0); | |
| 845 | print " <" . join('', @av_paren_type) . | |
| 846 | "> <$type> <$av_pending>" if ($dbg_values > 1); | |
| 847 | if ($cur =~ /^(\s+)/o) { | |
| 848 | print "WS($1)\n" if ($dbg_values > 1); | |
| 849 | if ($1 =~ /\n/ && $av_preprocessor) { | |
| 850 | $type = pop(@av_paren_type); | |
| 851 | $av_preprocessor = 0; | |
| 852 | } | |
| 853 | ||
| 61669f9a | 854 | } elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') { |
| 1ec3f6f9 BS |
855 | print "CAST($1)\n" if ($dbg_values > 1); |
| 856 | push(@av_paren_type, $type); | |
| 857 | $type = 'C'; | |
| 858 | ||
| 859 | } elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) { | |
| 860 | print "DECLARE($1)\n" if ($dbg_values > 1); | |
| 861 | $type = 'T'; | |
| 862 | ||
| 863 | } elsif ($cur =~ /^($Modifier)\s*/) { | |
| 864 | print "MODIFIER($1)\n" if ($dbg_values > 1); | |
| 865 | $type = 'T'; | |
| 866 | ||
| 867 | } elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) { | |
| 868 | print "DEFINE($1,$2)\n" if ($dbg_values > 1); | |
| 869 | $av_preprocessor = 1; | |
| 870 | push(@av_paren_type, $type); | |
| 871 | if ($2 ne '') { | |
| 872 | $av_pending = 'N'; | |
| 873 | } | |
| 874 | $type = 'E'; | |
| 875 | ||
| 876 | } elsif ($cur =~ /^(\#\s*(?:undef\s*$Ident|include\b))/o) { | |
| 877 | print "UNDEF($1)\n" if ($dbg_values > 1); | |
| 878 | $av_preprocessor = 1; | |
| 879 | push(@av_paren_type, $type); | |
| 880 | ||
| 881 | } elsif ($cur =~ /^(\#\s*(?:ifdef|ifndef|if))/o) { | |
| 882 | print "PRE_START($1)\n" if ($dbg_values > 1); | |
| 883 | $av_preprocessor = 1; | |
| 884 | ||
| 885 | push(@av_paren_type, $type); | |
| 886 | push(@av_paren_type, $type); | |
| 887 | $type = 'E'; | |
| 888 | ||
| 889 | } elsif ($cur =~ /^(\#\s*(?:else|elif))/o) { | |
| 890 | print "PRE_RESTART($1)\n" if ($dbg_values > 1); | |
| 891 | $av_preprocessor = 1; | |
| 892 | ||
| 893 | push(@av_paren_type, $av_paren_type[$#av_paren_type]); | |
| 894 | ||
| 895 | $type = 'E'; | |
| 896 | ||
| 897 | } elsif ($cur =~ /^(\#\s*(?:endif))/o) { | |
| 898 | print "PRE_END($1)\n" if ($dbg_values > 1); | |
| 899 | ||
| 900 | $av_preprocessor = 1; | |
| 901 | ||
| 902 | # Assume all arms of the conditional end as this | |
| 903 | # one does, and continue as if the #endif was not here. | |
| 904 | pop(@av_paren_type); | |
| 905 | push(@av_paren_type, $type); | |
| 906 | $type = 'E'; | |
| 907 | ||
| 908 | } elsif ($cur =~ /^(\\\n)/o) { | |
| 909 | print "PRECONT($1)\n" if ($dbg_values > 1); | |
| 910 | ||
| 911 | } elsif ($cur =~ /^(__attribute__)\s*\(?/o) { | |
| 912 | print "ATTR($1)\n" if ($dbg_values > 1); | |
| 913 | $av_pending = $type; | |
| 914 | $type = 'N'; | |
| 915 | ||
| 916 | } elsif ($cur =~ /^(sizeof)\s*(\()?/o) { | |
| 917 | print "SIZEOF($1)\n" if ($dbg_values > 1); | |
| 918 | if (defined $2) { | |
| 919 | $av_pending = 'V'; | |
| 920 | } | |
| 921 | $type = 'N'; | |
| 922 | ||
| 923 | } elsif ($cur =~ /^(if|while|for)\b/o) { | |
| 924 | print "COND($1)\n" if ($dbg_values > 1); | |
| 925 | $av_pending = 'E'; | |
| 926 | $type = 'N'; | |
| 927 | ||
| 928 | } elsif ($cur =~/^(case)/o) { | |
| 929 | print "CASE($1)\n" if ($dbg_values > 1); | |
| 930 | $av_pend_colon = 'C'; | |
| 931 | $type = 'N'; | |
| 932 | ||
| 933 | } elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) { | |
| 934 | print "KEYWORD($1)\n" if ($dbg_values > 1); | |
| 935 | $type = 'N'; | |
| 936 | ||
| 937 | } elsif ($cur =~ /^(\()/o) { | |
| 938 | print "PAREN('$1')\n" if ($dbg_values > 1); | |
| 939 | push(@av_paren_type, $av_pending); | |
| 940 | $av_pending = '_'; | |
| 941 | $type = 'N'; | |
| 942 | ||
| 943 | } elsif ($cur =~ /^(\))/o) { | |
| 944 | my $new_type = pop(@av_paren_type); | |
| 945 | if ($new_type ne '_') { | |
| 946 | $type = $new_type; | |
| 947 | print "PAREN('$1') -> $type\n" | |
| 948 | if ($dbg_values > 1); | |
| 949 | } else { | |
| 950 | print "PAREN('$1')\n" if ($dbg_values > 1); | |
| 951 | } | |
| 952 | ||
| 953 | } elsif ($cur =~ /^($Ident)\s*\(/o) { | |
| 954 | print "FUNC($1)\n" if ($dbg_values > 1); | |
| 955 | $type = 'V'; | |
| 956 | $av_pending = 'V'; | |
| 957 | ||
| 958 | } elsif ($cur =~ /^($Ident\s*):(?:\s*\d+\s*(,|=|;))?/) { | |
| 959 | if (defined $2 && $type eq 'C' || $type eq 'T') { | |
| 960 | $av_pend_colon = 'B'; | |
| 961 | } elsif ($type eq 'E') { | |
| 962 | $av_pend_colon = 'L'; | |
| 963 | } | |
| 964 | print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1); | |
| 965 | $type = 'V'; | |
| 966 | ||
| 967 | } elsif ($cur =~ /^($Ident|$Constant)/o) { | |
| 968 | print "IDENT($1)\n" if ($dbg_values > 1); | |
| 969 | $type = 'V'; | |
| 970 | ||
| 971 | } elsif ($cur =~ /^($Assignment)/o) { | |
| 972 | print "ASSIGN($1)\n" if ($dbg_values > 1); | |
| 973 | $type = 'N'; | |
| 974 | ||
| 975 | } elsif ($cur =~/^(;|{|})/) { | |
| 976 | print "END($1)\n" if ($dbg_values > 1); | |
| 977 | $type = 'E'; | |
| 978 | $av_pend_colon = 'O'; | |
| 979 | ||
| 980 | } elsif ($cur =~/^(,)/) { | |
| 981 | print "COMMA($1)\n" if ($dbg_values > 1); | |
| 982 | $type = 'C'; | |
| 983 | ||
| 984 | } elsif ($cur =~ /^(\?)/o) { | |
| 985 | print "QUESTION($1)\n" if ($dbg_values > 1); | |
| 986 | $type = 'N'; | |
| 987 | ||
| 988 | } elsif ($cur =~ /^(:)/o) { | |
| 989 | print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1); | |
| 990 | ||
| 991 | substr($var, length($res), 1, $av_pend_colon); | |
| 992 | if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') { | |
| 993 | $type = 'E'; | |
| 994 | } else { | |
| 995 | $type = 'N'; | |
| 996 | } | |
| 997 | $av_pend_colon = 'O'; | |
| 998 | ||
| 999 | } elsif ($cur =~ /^(\[)/o) { | |
| 1000 | print "CLOSE($1)\n" if ($dbg_values > 1); | |
| 1001 | $type = 'N'; | |
| 1002 | ||
| 1003 | } elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) { | |
| 1004 | my $variant; | |
| 1005 | ||
| 1006 | print "OPV($1)\n" if ($dbg_values > 1); | |
| 1007 | if ($type eq 'V') { | |
| 1008 | $variant = 'B'; | |
| 1009 | } else { | |
| 1010 | $variant = 'U'; | |
| 1011 | } | |
| 1012 | ||
| 1013 | substr($var, length($res), 1, $variant); | |
| 1014 | $type = 'N'; | |
| 1015 | ||
| 1016 | } elsif ($cur =~ /^($Operators)/o) { | |
| 1017 | print "OP($1)\n" if ($dbg_values > 1); | |
| 1018 | if ($1 ne '++' && $1 ne '--') { | |
| 1019 | $type = 'N'; | |
| 1020 | } | |
| 1021 | ||
| 1022 | } elsif ($cur =~ /(^.)/o) { | |
| 1023 | print "C($1)\n" if ($dbg_values > 1); | |
| 1024 | } | |
| 1025 | if (defined $1) { | |
| 1026 | $cur = substr($cur, length($1)); | |
| 1027 | $res .= $type x length($1); | |
| 1028 | } | |
| 1029 | } | |
| 1030 | ||
| 1031 | return ($res, $var); | |
| 1032 | } | |
| 1033 | ||
| 1034 | sub possible { | |
| 1035 | my ($possible, $line) = @_; | |
| 1036 | my $notPermitted = qr{(?: | |
| 1037 | ^(?: | |
| 1038 | $Modifier| | |
| 1039 | $Storage| | |
| 1040 | $Type| | |
| 1041 | DEFINE_\S+ | |
| 1042 | )$| | |
| 1043 | ^(?: | |
| 1044 | goto| | |
| 1045 | return| | |
| 1046 | case| | |
| 1047 | else| | |
| 1048 | asm|__asm__| | |
| 1049 | do | |
| 1050 | )(?:\s|$)| | |
| 1051 | ^(?:typedef|struct|enum)\b | |
| 1052 | )}x; | |
| 1053 | warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2); | |
| 1054 | if ($possible !~ $notPermitted) { | |
| 1055 | # Check for modifiers. | |
| 1056 | $possible =~ s/\s*$Storage\s*//g; | |
| 1057 | $possible =~ s/\s*$Sparse\s*//g; | |
| 1058 | if ($possible =~ /^\s*$/) { | |
| 1059 | ||
| 1060 | } elsif ($possible =~ /\s/) { | |
| 1061 | $possible =~ s/\s*$Type\s*//g; | |
| 1062 | for my $modifier (split(' ', $possible)) { | |
| 1063 | if ($modifier !~ $notPermitted) { | |
| 1064 | warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible); | |
| 1065 | push(@modifierList, $modifier); | |
| 1066 | } | |
| 1067 | } | |
| 1068 | ||
| 1069 | } else { | |
| 1070 | warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible); | |
| 1071 | push(@typeList, $possible); | |
| 1072 | } | |
| 1073 | build_types(); | |
| 1074 | } else { | |
| 1075 | warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1); | |
| 1076 | } | |
| 1077 | } | |
| 1078 | ||
| 1079 | my $prefix = ''; | |
| 1080 | ||
| 1081 | sub report { | |
| 1082 | if (defined $tst_only && $_[0] !~ /\Q$tst_only\E/) { | |
| 1083 | return 0; | |
| 1084 | } | |
| 1085 | my $line = $prefix . $_[0]; | |
| 1086 | ||
| 1087 | $line = (split('\n', $line))[0] . "\n" if ($terse); | |
| 1088 | ||
| 1089 | push(our @report, $line); | |
| 1090 | ||
| 1091 | return 1; | |
| 1092 | } | |
| 1093 | sub report_dump { | |
| 1094 | our @report; | |
| 1095 | } | |
| 1096 | sub ERROR { | |
| 1097 | if (report("ERROR: $_[0]\n")) { | |
| 1098 | our $clean = 0; | |
| 1099 | our $cnt_error++; | |
| 1100 | } | |
| 1101 | } | |
| 1102 | sub WARN { | |
| 1103 | if (report("WARNING: $_[0]\n")) { | |
| 1104 | our $clean = 0; | |
| 1105 | our $cnt_warn++; | |
| 1106 | } | |
| 1107 | } | |
| 1108 | sub CHK { | |
| 1109 | if ($check && report("CHECK: $_[0]\n")) { | |
| 1110 | our $clean = 0; | |
| 1111 | our $cnt_chk++; | |
| 1112 | } | |
| 1113 | } | |
| 1114 | ||
| 1115 | sub check_absolute_file { | |
| 1116 | my ($absolute, $herecurr) = @_; | |
| 1117 | my $file = $absolute; | |
| 1118 | ||
| 1119 | ##print "absolute<$absolute>\n"; | |
| 1120 | ||
| 1121 | # See if any suffix of this path is a path within the tree. | |
| 1122 | while ($file =~ s@^[^/]*/@@) { | |
| 1123 | if (-f "$root/$file") { | |
| 1124 | ##print "file<$file>\n"; | |
| 1125 | last; | |
| 1126 | } | |
| 1127 | } | |
| 1128 | if (! -f _) { | |
| 1129 | return 0; | |
| 1130 | } | |
| 1131 | ||
| 1132 | # It is, so see if the prefix is acceptable. | |
| 1133 | my $prefix = $absolute; | |
| 1134 | substr($prefix, -length($file)) = ''; | |
| 1135 | ||
| 1136 | ##print "prefix<$prefix>\n"; | |
| 1137 | if ($prefix ne ".../") { | |
| 1138 | WARN("use relative pathname instead of absolute in changelog text\n" . $herecurr); | |
| 1139 | } | |
| 1140 | } | |
| 1141 | ||
| 1142 | sub process { | |
| 1143 | my $filename = shift; | |
| 1144 | ||
| 1145 | my $linenr=0; | |
| 1146 | my $prevline=""; | |
| 1147 | my $prevrawline=""; | |
| 1148 | my $stashline=""; | |
| 1149 | my $stashrawline=""; | |
| 1150 | ||
| 1151 | my $length; | |
| 1152 | my $indent; | |
| 1153 | my $previndent=0; | |
| 1154 | my $stashindent=0; | |
| 1155 | ||
| 1156 | our $clean = 1; | |
| 1157 | my $signoff = 0; | |
| 1158 | my $is_patch = 0; | |
| 1159 | ||
| 1160 | our @report = (); | |
| 1161 | our $cnt_lines = 0; | |
| 1162 | our $cnt_error = 0; | |
| 1163 | our $cnt_warn = 0; | |
| 1164 | our $cnt_chk = 0; | |
| 1165 | ||
| 1166 | # Trace the real file/line as we go. | |
| 1167 | my $realfile = ''; | |
| 1168 | my $realline = 0; | |
| 1169 | my $realcnt = 0; | |
| 1170 | my $here = ''; | |
| 1171 | my $in_comment = 0; | |
| 1172 | my $comment_edge = 0; | |
| 1173 | my $first_line = 0; | |
| 1174 | my $p1_prefix = ''; | |
| 1175 | ||
| 1176 | my $prev_values = 'E'; | |
| 1177 | ||
| 1178 | # suppression flags | |
| 1179 | my %suppress_ifbraces; | |
| 1180 | my %suppress_whiletrailers; | |
| 1181 | my %suppress_export; | |
| 1182 | ||
| 1183 | # Pre-scan the patch sanitizing the lines. | |
| 1184 | # Pre-scan the patch looking for any __setup documentation. | |
| 1185 | # | |
| 1186 | my @setup_docs = (); | |
| 1187 | my $setup_docs = 0; | |
| 1188 | ||
| 1189 | sanitise_line_reset(); | |
| 1190 | my $line; | |
| 1191 | foreach my $rawline (@rawlines) { | |
| 1192 | $linenr++; | |
| 1193 | $line = $rawline; | |
| 1194 | ||
| 1195 | if ($rawline=~/^\+\+\+\s+(\S+)/) { | |
| 1196 | $setup_docs = 0; | |
| 1197 | if ($1 =~ m@Documentation/kernel-parameters.txt$@) { | |
| 1198 | $setup_docs = 1; | |
| 1199 | } | |
| 1200 | #next; | |
| 1201 | } | |
| 1202 | if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) { | |
| 1203 | $realline=$1-1; | |
| 1204 | if (defined $2) { | |
| 1205 | $realcnt=$3+1; | |
| 1206 | } else { | |
| 1207 | $realcnt=1+1; | |
| 1208 | } | |
| 1209 | $in_comment = 0; | |
| 1210 | ||
| 1211 | # Guestimate if this is a continuing comment. Run | |
| 1212 | # the context looking for a comment "edge". If this | |
| 1213 | # edge is a close comment then we must be in a comment | |
| 1214 | # at context start. | |
| 1215 | my $edge; | |
| 1216 | my $cnt = $realcnt; | |
| 1217 | for (my $ln = $linenr + 1; $cnt > 0; $ln++) { | |
| 1218 | next if (defined $rawlines[$ln - 1] && | |
| 1219 | $rawlines[$ln - 1] =~ /^-/); | |
| 1220 | $cnt--; | |
| 1221 | #print "RAW<$rawlines[$ln - 1]>\n"; | |
| 1222 | last if (!defined $rawlines[$ln - 1]); | |
| 1223 | if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ && | |
| 1224 | $rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) { | |
| 1225 | ($edge) = $1; | |
| 1226 | last; | |
| 1227 | } | |
| 1228 | } | |
| 1229 | if (defined $edge && $edge eq '*/') { | |
| 1230 | $in_comment = 1; | |
| 1231 | } | |
| 1232 | ||
| 1233 | # Guestimate if this is a continuing comment. If this | |
| 1234 | # is the start of a diff block and this line starts | |
| 1235 | # ' *' then it is very likely a comment. | |
| 1236 | if (!defined $edge && | |
| 1237 | $rawlines[$linenr] =~ m@^.\s*(?:\*\*+| \*)(?:\s|$)@) | |
| 1238 | { | |
| 1239 | $in_comment = 1; | |
| 1240 | } | |
| 1241 | ||
| 1242 | ##print "COMMENT:$in_comment edge<$edge> $rawline\n"; | |
| 1243 | sanitise_line_reset($in_comment); | |
| 1244 | ||
| 1245 | } elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) { | |
| 1246 | # Standardise the strings and chars within the input to | |
| 1247 | # simplify matching -- only bother with positive lines. | |
| 1248 | $line = sanitise_line($rawline); | |
| 1249 | } | |
| 1250 | push(@lines, $line); | |
| 1251 | ||
| 1252 | if ($realcnt > 1) { | |
| 1253 | $realcnt-- if ($line =~ /^(?:\+| |$)/); | |
| 1254 | } else { | |
| 1255 | $realcnt = 0; | |
| 1256 | } | |
| 1257 | ||
| 1258 | #print "==>$rawline\n"; | |
| 1259 | #print "-->$line\n"; | |
| 1260 | ||
| 1261 | if ($setup_docs && $line =~ /^\+/) { | |
| 1262 | push(@setup_docs, $line); | |
| 1263 | } | |
| 1264 | } | |
| 1265 | ||
| 1266 | $prefix = ''; | |
| 1267 | ||
| 1268 | $realcnt = 0; | |
| 1269 | $linenr = 0; | |
| 1270 | foreach my $line (@lines) { | |
| 1271 | $linenr++; | |
| 1272 | ||
| 1273 | my $rawline = $rawlines[$linenr - 1]; | |
| 1274 | ||
| 1275 | #extract the line range in the file after the patch is applied | |
| 1276 | if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) { | |
| 1277 | $is_patch = 1; | |
| 1278 | $first_line = $linenr + 1; | |
| 1279 | $realline=$1-1; | |
| 1280 | if (defined $2) { | |
| 1281 | $realcnt=$3+1; | |
| 1282 | } else { | |
| 1283 | $realcnt=1+1; | |
| 1284 | } | |
| 1285 | annotate_reset(); | |
| 1286 | $prev_values = 'E'; | |
| 1287 | ||
| 1288 | %suppress_ifbraces = (); | |
| 1289 | %suppress_whiletrailers = (); | |
| 1290 | %suppress_export = (); | |
| 1291 | next; | |
| 1292 | ||
| 1293 | # track the line number as we move through the hunk, note that | |
| 1294 | # new versions of GNU diff omit the leading space on completely | |
| 1295 | # blank context lines so we need to count that too. | |
| 1296 | } elsif ($line =~ /^( |\+|$)/) { | |
| 1297 | $realline++; | |
| 1298 | $realcnt-- if ($realcnt != 0); | |
| 1299 | ||
| 1300 | # Measure the line length and indent. | |
| 1301 | ($length, $indent) = line_stats($rawline); | |
| 1302 | ||
| 1303 | # Track the previous line. | |
| 1304 | ($prevline, $stashline) = ($stashline, $line); | |
| 1305 | ($previndent, $stashindent) = ($stashindent, $indent); | |
| 1306 | ($prevrawline, $stashrawline) = ($stashrawline, $rawline); | |
| 1307 | ||
| 1308 | #warn "line<$line>\n"; | |
| 1309 | ||
| 1310 | } elsif ($realcnt == 1) { | |
| 1311 | $realcnt--; | |
| 1312 | } | |
| 1313 | ||
| 1314 | my $hunk_line = ($realcnt != 0); | |
| 1315 | ||
| 1316 | #make up the handle for any error we report on this line | |
| 1317 | $prefix = "$filename:$realline: " if ($emacs && $file); | |
| 1318 | $prefix = "$filename:$linenr: " if ($emacs && !$file); | |
| 1319 | ||
| 1320 | $here = "#$linenr: " if (!$file); | |
| 1321 | $here = "#$realline: " if ($file); | |
| 1322 | ||
| 1323 | # extract the filename as it passes | |
| 1324 | if ($line =~ /^diff --git.*?(\S+)$/) { | |
| 1325 | $realfile = $1; | |
| 1326 | $realfile =~ s@^([^/]*)/@@; | |
| 1327 | ||
| 1328 | } elsif ($line =~ /^\+\+\+\s+(\S+)/) { | |
| 1329 | $realfile = $1; | |
| 1330 | $realfile =~ s@^([^/]*)/@@; | |
| 1331 | ||
| 1332 | $p1_prefix = $1; | |
| 1333 | if (!$file && $tree && $p1_prefix ne '' && | |
| 1334 | -e "$root/$p1_prefix") { | |
| 1335 | WARN("patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n"); | |
| 1336 | } | |
| 1337 | ||
| 1338 | if ($realfile =~ m@^include/asm/@) { | |
| 1339 | ERROR("do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n"); | |
| 1340 | } | |
| 1341 | next; | |
| 1342 | } | |
| 1343 | ||
| 1344 | $here .= "FILE: $realfile:$realline:" if ($realcnt != 0); | |
| 1345 | ||
| 1346 | my $hereline = "$here\n$rawline\n"; | |
| 1347 | my $herecurr = "$here\n$rawline\n"; | |
| 1348 | my $hereprev = "$here\n$prevrawline\n$rawline\n"; | |
| 1349 | ||
| 1350 | $cnt_lines++ if ($realcnt != 0); | |
| 1351 | ||
| 1352 | # Check for incorrect file permissions | |
| 1353 | if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) { | |
| 1354 | my $permhere = $here . "FILE: $realfile\n"; | |
| 71c47b01 | 1355 | if ($realfile =~ /(\bMakefile(?:\.objs)?|\.c|\.cc|\.cpp|\.h|\.mak|\.[sS])$/) { |
| 1ec3f6f9 BS |
1356 | ERROR("do not set execute permissions for source files\n" . $permhere); |
| 1357 | } | |
| 1358 | } | |
| 1359 | ||
| 1360 | #check the patch for a signoff: | |
| 1361 | if ($line =~ /^\s*signed-off-by:/i) { | |
| 1362 | # This is a signoff, if ugly, so do not double report. | |
| 1363 | $signoff++; | |
| 1364 | if (!($line =~ /^\s*Signed-off-by:/)) { | |
| 1365 | WARN("Signed-off-by: is the preferred form\n" . | |
| 1366 | $herecurr); | |
| 1367 | } | |
| 1368 | if ($line =~ /^\s*signed-off-by:\S/i) { | |
| 1369 | WARN("space required after Signed-off-by:\n" . | |
| 1370 | $herecurr); | |
| 1371 | } | |
| 1372 | } | |
| 1373 | ||
| 1374 | # Check for wrappage within a valid hunk of the file | |
| 1375 | if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) { | |
| 1376 | ERROR("patch seems to be corrupt (line wrapped?)\n" . | |
| 1377 | $herecurr) if (!$emitted_corrupt++); | |
| 1378 | } | |
| 1379 | ||
| 1380 | # Check for absolute kernel paths. | |
| 1381 | if ($tree) { | |
| 1382 | while ($line =~ m{(?:^|\s)(/\S*)}g) { | |
| 1383 | my $file = $1; | |
| 1384 | ||
| 1385 | if ($file =~ m{^(.*?)(?::\d+)+:?$} && | |
| 1386 | check_absolute_file($1, $herecurr)) { | |
| 1387 | # | |
| 1388 | } else { | |
| 1389 | check_absolute_file($file, $herecurr); | |
| 1390 | } | |
| 1391 | } | |
| 1392 | } | |
| 1393 | ||
| 1394 | # UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php | |
| 1395 | if (($realfile =~ /^$/ || $line =~ /^\+/) && | |
| 1396 | $rawline !~ m/^$UTF8*$/) { | |
| 1397 | my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/); | |
| 1398 | ||
| 1399 | my $blank = copy_spacing($rawline); | |
| 1400 | my $ptr = substr($blank, 0, length($utf8_prefix)) . "^"; | |
| 1401 | my $hereptr = "$hereline$ptr\n"; | |
| 1402 | ||
| 1403 | ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr); | |
| 1404 | } | |
| 1405 | ||
| 1406 | # ignore non-hunk lines and lines being removed | |
| 1407 | next if (!$hunk_line || $line =~ /^-/); | |
| 1408 | ||
| 1409 | #trailing whitespace | |
| 1410 | if ($line =~ /^\+.*\015/) { | |
| 1411 | my $herevet = "$here\n" . cat_vet($rawline) . "\n"; | |
| 1412 | ERROR("DOS line endings\n" . $herevet); | |
| 1413 | ||
| 1414 | } elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) { | |
| 1415 | my $herevet = "$here\n" . cat_vet($rawline) . "\n"; | |
| 1416 | ERROR("trailing whitespace\n" . $herevet); | |
| 1417 | $rpt_cleaners = 1; | |
| 1418 | } | |
| 1419 | ||
| 1420 | # check for Kconfig help text having a real description | |
| 1421 | # Only applies when adding the entry originally, after that we do not have | |
| 1422 | # sufficient context to determine whether it is indeed long enough. | |
| 1423 | if ($realfile =~ /Kconfig/ && | |
| 1424 | $line =~ /\+\s*(?:---)?help(?:---)?$/) { | |
| 1425 | my $length = 0; | |
| 1426 | my $cnt = $realcnt; | |
| 1427 | my $ln = $linenr + 1; | |
| 1428 | my $f; | |
| 1429 | my $is_end = 0; | |
| 1430 | while ($cnt > 0 && defined $lines[$ln - 1]) { | |
| 1431 | $f = $lines[$ln - 1]; | |
| 1432 | $cnt-- if ($lines[$ln - 1] !~ /^-/); | |
| 1433 | $is_end = $lines[$ln - 1] =~ /^\+/; | |
| 1434 | $ln++; | |
| 1435 | ||
| 1436 | next if ($f =~ /^-/); | |
| 1437 | $f =~ s/^.//; | |
| 1438 | $f =~ s/#.*//; | |
| 1439 | $f =~ s/^\s+//; | |
| 1440 | next if ($f =~ /^$/); | |
| 1441 | if ($f =~ /^\s*config\s/) { | |
| 1442 | $is_end = 1; | |
| 1443 | last; | |
| 1444 | } | |
| 1445 | $length++; | |
| 1446 | } | |
| 1447 | WARN("please write a paragraph that describes the config symbol fully\n" . $herecurr) if ($is_end && $length < 4); | |
| 1448 | #print "is_end<$is_end> length<$length>\n"; | |
| 1449 | } | |
| 1450 | ||
| 1451 | # check we are in a valid source file if not then ignore this hunk | |
| 69d5d21f | 1452 | next if ($realfile !~ /\.(h|c|cpp|s|S|pl|sh)$/); |
| 1ec3f6f9 BS |
1453 | |
| 1454 | #80 column limit | |
| 1455 | if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ && | |
| 1456 | $rawline !~ /^.\s*\*\s*\@$Ident\s/ && | |
| 1457 | !($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:,|\)\s*;)\s*$/ || | |
| 1458 | $line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) && | |
| 1459 | $length > 80) | |
| 1460 | { | |
| 1461 | WARN("line over 80 characters\n" . $herecurr); | |
| 1462 | } | |
| 1463 | ||
| 1464 | # check for spaces before a quoted newline | |
| 1465 | if ($rawline =~ /^.*\".*\s\\n/) { | |
| 1466 | WARN("unnecessary whitespace before a quoted newline\n" . $herecurr); | |
| 1467 | } | |
| 1468 | ||
| 1469 | # check for adding lines without a newline. | |
| 1470 | if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) { | |
| 1471 | WARN("adding a line without newline at end of file\n" . $herecurr); | |
| 1472 | } | |
| 1473 | ||
| 1474 | # Blackfin: use hi/lo macros | |
| 1475 | if ($realfile =~ m@arch/blackfin/.*\.S$@) { | |
| 1476 | if ($line =~ /\.[lL][[:space:]]*=.*&[[:space:]]*0x[fF][fF][fF][fF]/) { | |
| 1477 | my $herevet = "$here\n" . cat_vet($line) . "\n"; | |
| 1478 | ERROR("use the LO() macro, not (... & 0xFFFF)\n" . $herevet); | |
| 1479 | } | |
| 1480 | if ($line =~ /\.[hH][[:space:]]*=.*>>[[:space:]]*16/) { | |
| 1481 | my $herevet = "$here\n" . cat_vet($line) . "\n"; | |
| 1482 | ERROR("use the HI() macro, not (... >> 16)\n" . $herevet); | |
| 1483 | } | |
| 1484 | } | |
| 1485 | ||
| 1486 | # check we are in a valid source file C or perl if not then ignore this hunk | |
| 69d5d21f | 1487 | next if ($realfile !~ /\.(h|c|cpp|pl)$/); |
| 1ec3f6f9 | 1488 | |
| b6469683 | 1489 | # in QEMU, no tabs are allowed |
| ad36ce8b | 1490 | if ($rawline =~ /^\+.*\t/) { |
| 1ec3f6f9 | 1491 | my $herevet = "$here\n" . cat_vet($rawline) . "\n"; |
| b6469683 | 1492 | ERROR("code indent should never use tabs\n" . $herevet); |
| 1ec3f6f9 BS |
1493 | $rpt_cleaners = 1; |
| 1494 | } | |
| 1495 | ||
| 1ec3f6f9 | 1496 | # check we are in a valid C source file if not then ignore this hunk |
| 69d5d21f | 1497 | next if ($realfile !~ /\.(h|c|cpp)$/); |
| 1ec3f6f9 BS |
1498 | |
| 1499 | # check for RCS/CVS revision markers | |
| 1500 | if ($rawline =~ /^\+.*\$(Revision|Log|Id)(?:\$|)/) { | |
| 1501 | WARN("CVS style keyword markers, these will _not_ be updated\n". $herecurr); | |
| 1502 | } | |
| 1503 | ||
| 1504 | # Blackfin: don't use __builtin_bfin_[cs]sync | |
| 1505 | if ($line =~ /__builtin_bfin_csync/) { | |
| 1506 | my $herevet = "$here\n" . cat_vet($line) . "\n"; | |
| 1507 | ERROR("use the CSYNC() macro in asm/blackfin.h\n" . $herevet); | |
| 1508 | } | |
| 1509 | if ($line =~ /__builtin_bfin_ssync/) { | |
| 1510 | my $herevet = "$here\n" . cat_vet($line) . "\n"; | |
| 1511 | ERROR("use the SSYNC() macro in asm/blackfin.h\n" . $herevet); | |
| 1512 | } | |
| 1513 | ||
| 1514 | # Check for potential 'bare' types | |
| 1515 | my ($stat, $cond, $line_nr_next, $remain_next, $off_next, | |
| 1516 | $realline_next); | |
| 1517 | if ($realcnt && $line =~ /.\s*\S/) { | |
| 1518 | ($stat, $cond, $line_nr_next, $remain_next, $off_next) = | |
| 1519 | ctx_statement_block($linenr, $realcnt, 0); | |
| 1520 | $stat =~ s/\n./\n /g; | |
| 1521 | $cond =~ s/\n./\n /g; | |
| 1522 | ||
| 1523 | # Find the real next line. | |
| 1524 | $realline_next = $line_nr_next; | |
| 1525 | if (defined $realline_next && | |
| 1526 | (!defined $lines[$realline_next - 1] || | |
| 1527 | substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) { | |
| 1528 | $realline_next++; | |
| 1529 | } | |
| 1530 | ||
| 1531 | my $s = $stat; | |
| 1532 | $s =~ s/{.*$//s; | |
| 1533 | ||
| 1534 | # Ignore goto labels. | |
| 1535 | if ($s =~ /$Ident:\*$/s) { | |
| 1536 | ||
| 1537 | # Ignore functions being called | |
| 1538 | } elsif ($s =~ /^.\s*$Ident\s*\(/s) { | |
| 1539 | ||
| 1540 | } elsif ($s =~ /^.\s*else\b/s) { | |
| 1541 | ||
| 1542 | # declarations always start with types | |
| 1543 | } elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?((?:\s*$Ident)+?)\b(?:\s+$Sparse)?\s*\**\s*(?:$Ident|\(\*[^\)]*\))(?:\s*$Modifier)?\s*(?:;|=|,|\()/s) { | |
| 1544 | my $type = $1; | |
| 1545 | $type =~ s/\s+/ /g; | |
| 1546 | possible($type, "A:" . $s); | |
| 1547 | ||
| 1548 | # definitions in global scope can only start with types | |
| 1549 | } elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) { | |
| 1550 | possible($1, "B:" . $s); | |
| 1551 | } | |
| 1552 | ||
| 1553 | # any (foo ... *) is a pointer cast, and foo is a type | |
| 1554 | while ($s =~ /\(($Ident)(?:\s+$Sparse)*[\s\*]+\s*\)/sg) { | |
| 1555 | possible($1, "C:" . $s); | |
| 1556 | } | |
| 1557 | ||
| 1558 | # Check for any sort of function declaration. | |
| 1559 | # int foo(something bar, other baz); | |
| 1560 | # void (*store_gdt)(x86_descr_ptr *); | |
| 1561 | if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/s) { | |
| 1562 | my ($name_len) = length($1); | |
| 1563 | ||
| 1564 | my $ctx = $s; | |
| 1565 | substr($ctx, 0, $name_len + 1, ''); | |
| 1566 | $ctx =~ s/\)[^\)]*$//; | |
| 1567 | ||
| 1568 | for my $arg (split(/\s*,\s*/, $ctx)) { | |
| 1569 | if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/s || $arg =~ /^($Ident)$/s) { | |
| 1570 | ||
| 1571 | possible($1, "D:" . $s); | |
| 1572 | } | |
| 1573 | } | |
| 1574 | } | |
| 1575 | ||
| 1576 | } | |
| 1577 | ||
| 1578 | # | |
| 1579 | # Checks which may be anchored in the context. | |
| 1580 | # | |
| 1581 | ||
| 1582 | # Check for switch () and associated case and default | |
| 1583 | # statements should be at the same indent. | |
| 1584 | if ($line=~/\bswitch\s*\(.*\)/) { | |
| 1585 | my $err = ''; | |
| 1586 | my $sep = ''; | |
| 1587 | my @ctx = ctx_block_outer($linenr, $realcnt); | |
| 1588 | shift(@ctx); | |
| 1589 | for my $ctx (@ctx) { | |
| 1590 | my ($clen, $cindent) = line_stats($ctx); | |
| 1591 | if ($ctx =~ /^\+\s*(case\s+|default:)/ && | |
| 1592 | $indent != $cindent) { | |
| 1593 | $err .= "$sep$ctx\n"; | |
| 1594 | $sep = ''; | |
| 1595 | } else { | |
| 1596 | $sep = "[...]\n"; | |
| 1597 | } | |
| 1598 | } | |
| 1599 | if ($err ne '') { | |
| 1600 | ERROR("switch and case should be at the same indent\n$hereline$err"); | |
| 1601 | } | |
| 1602 | } | |
| 1603 | ||
| 1604 | # if/while/etc brace do not go on next line, unless defining a do while loop, | |
| 1605 | # or if that brace on the next line is for something else | |
| 1606 | if ($line =~ /(.*)\b((?:if|while|for|switch)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) { | |
| 1607 | my $pre_ctx = "$1$2"; | |
| 1608 | ||
| 1609 | my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0); | |
| 1610 | my $ctx_cnt = $realcnt - $#ctx - 1; | |
| 1611 | my $ctx = join("\n", @ctx); | |
| 1612 | ||
| 1613 | my $ctx_ln = $linenr; | |
| 1614 | my $ctx_skip = $realcnt; | |
| 1615 | ||
| 1616 | while ($ctx_skip > $ctx_cnt || ($ctx_skip == $ctx_cnt && | |
| 1617 | defined $lines[$ctx_ln - 1] && | |
| 1618 | $lines[$ctx_ln - 1] =~ /^-/)) { | |
| 1619 | ##print "SKIP<$ctx_skip> CNT<$ctx_cnt>\n"; | |
| 1620 | $ctx_skip-- if (!defined $lines[$ctx_ln - 1] || $lines[$ctx_ln - 1] !~ /^-/); | |
| 1621 | $ctx_ln++; | |
| 1622 | } | |
| 1623 | ||
| 1624 | #print "realcnt<$realcnt> ctx_cnt<$ctx_cnt>\n"; | |
| 1625 | #print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n"; | |
| 1626 | ||
| a97ceca5 HR |
1627 | # The length of the "previous line" is checked against 80 because it |
| 1628 | # includes the + at the beginning of the line (if the actual line has | |
| 1629 | # 79 or 80 characters, it is no longer possible to add a space and an | |
| 1630 | # opening brace there) | |
| 1631 | if ($#ctx == 0 && $ctx !~ /{\s*/ && | |
| 1632 | defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/ && | |
| 1633 | defined($lines[$ctx_ln - 2]) && length($lines[$ctx_ln - 2]) < 80) { | |
| 1ec3f6f9 BS |
1634 | ERROR("that open brace { should be on the previous line\n" . |
| 1635 | "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n"); | |
| 1636 | } | |
| 1637 | if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ && | |
| 1638 | $ctx =~ /\)\s*\;\s*$/ && | |
| 1639 | defined $lines[$ctx_ln - 1]) | |
| 1640 | { | |
| 1641 | my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]); | |
| 1642 | if ($nindent > $indent) { | |
| 1643 | WARN("trailing semicolon indicates no statements, indent implies otherwise\n" . | |
| 1644 | "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n"); | |
| 1645 | } | |
| 1646 | } | |
| 1647 | } | |
| 1648 | ||
| 1649 | # Check relative indent for conditionals and blocks. | |
| 1650 | if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) { | |
| 1651 | my ($s, $c) = ($stat, $cond); | |
| 1652 | ||
| 1653 | substr($s, 0, length($c), ''); | |
| 1654 | ||
| 1655 | # Make sure we remove the line prefixes as we have | |
| 1656 | # none on the first line, and are going to readd them | |
| 1657 | # where necessary. | |
| 1658 | $s =~ s/\n./\n/gs; | |
| 1659 | ||
| 1660 | # Find out how long the conditional actually is. | |
| 1661 | my @newlines = ($c =~ /\n/gs); | |
| 1662 | my $cond_lines = 1 + $#newlines; | |
| 1663 | ||
| 1664 | # We want to check the first line inside the block | |
| 1665 | # starting at the end of the conditional, so remove: | |
| 1666 | # 1) any blank line termination | |
| 1667 | # 2) any opening brace { on end of the line | |
| 1668 | # 3) any do (...) { | |
| 1669 | my $continuation = 0; | |
| 1670 | my $check = 0; | |
| 1671 | $s =~ s/^.*\bdo\b//; | |
| 1672 | $s =~ s/^\s*{//; | |
| 1673 | if ($s =~ s/^\s*\\//) { | |
| 1674 | $continuation = 1; | |
| 1675 | } | |
| 1676 | if ($s =~ s/^\s*?\n//) { | |
| 1677 | $check = 1; | |
| 1678 | $cond_lines++; | |
| 1679 | } | |
| 1680 | ||
| 1681 | # Also ignore a loop construct at the end of a | |
| 1682 | # preprocessor statement. | |
| 1683 | if (($prevline =~ /^.\s*#\s*define\s/ || | |
| 1684 | $prevline =~ /\\\s*$/) && $continuation == 0) { | |
| 1685 | $check = 0; | |
| 1686 | } | |
| 1687 | ||
| 1688 | my $cond_ptr = -1; | |
| 1689 | $continuation = 0; | |
| 1690 | while ($cond_ptr != $cond_lines) { | |
| 1691 | $cond_ptr = $cond_lines; | |
| 1692 | ||
| 1693 | # If we see an #else/#elif then the code | |
| 1694 | # is not linear. | |
| 1695 | if ($s =~ /^\s*\#\s*(?:else|elif)/) { | |
| 1696 | $check = 0; | |
| 1697 | } | |
| 1698 | ||
| 1699 | # Ignore: | |
| 1700 | # 1) blank lines, they should be at 0, | |
| 1701 | # 2) preprocessor lines, and | |
| 1702 | # 3) labels. | |
| 1703 | if ($continuation || | |
| 1704 | $s =~ /^\s*?\n/ || | |
| 1705 | $s =~ /^\s*#\s*?/ || | |
| 1706 | $s =~ /^\s*$Ident\s*:/) { | |
| 1707 | $continuation = ($s =~ /^.*?\\\n/) ? 1 : 0; | |
| 1708 | if ($s =~ s/^.*?\n//) { | |
| 1709 | $cond_lines++; | |
| 1710 | } | |
| 1711 | } | |
| 1712 | } | |
| 1713 | ||
| 1714 | my (undef, $sindent) = line_stats("+" . $s); | |
| 1715 | my $stat_real = raw_line($linenr, $cond_lines); | |
| 1716 | ||
| 1717 | # Check if either of these lines are modified, else | |
| 1718 | # this is not this patch's fault. | |
| 1719 | if (!defined($stat_real) || | |
| 1720 | $stat !~ /^\+/ && $stat_real !~ /^\+/) { | |
| 1721 | $check = 0; | |
| 1722 | } | |
| 1723 | if (defined($stat_real) && $cond_lines > 1) { | |
| 1724 | $stat_real = "[...]\n$stat_real"; | |
| 1725 | } | |
| 1726 | ||
| 1727 | #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"; | |
| 1728 | ||
| b6469683 | 1729 | if ($check && (($sindent % 4) != 0 || |
| 1ec3f6f9 BS |
1730 | ($sindent <= $indent && $s ne ''))) { |
| 1731 | WARN("suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n"); | |
| 1732 | } | |
| 1733 | } | |
| 1734 | ||
| 1735 | # Track the 'values' across context and added lines. | |
| 1736 | my $opline = $line; $opline =~ s/^./ /; | |
| 1737 | my ($curr_values, $curr_vars) = | |
| 1738 | annotate_values($opline . "\n", $prev_values); | |
| 1739 | $curr_values = $prev_values . $curr_values; | |
| 1740 | if ($dbg_values) { | |
| 1741 | my $outline = $opline; $outline =~ s/\t/ /g; | |
| 1742 | print "$linenr > .$outline\n"; | |
| 1743 | print "$linenr > $curr_values\n"; | |
| 1744 | print "$linenr > $curr_vars\n"; | |
| 1745 | } | |
| 1746 | $prev_values = substr($curr_values, -1); | |
| 1747 | ||
| 1748 | #ignore lines not being added | |
| 1749 | if ($line=~/^[^\+]/) {next;} | |
| 1750 | ||
| 1751 | # TEST: allow direct testing of the type matcher. | |
| 1752 | if ($dbg_type) { | |
| 1753 | if ($line =~ /^.\s*$Declare\s*$/) { | |
| 1754 | ERROR("TEST: is type\n" . $herecurr); | |
| 1755 | } elsif ($dbg_type > 1 && $line =~ /^.+($Declare)/) { | |
| 1756 | ERROR("TEST: is not type ($1 is)\n". $herecurr); | |
| 1757 | } | |
| 1758 | next; | |
| 1759 | } | |
| 1760 | # TEST: allow direct testing of the attribute matcher. | |
| 1761 | if ($dbg_attr) { | |
| 1762 | if ($line =~ /^.\s*$Modifier\s*$/) { | |
| 1763 | ERROR("TEST: is attr\n" . $herecurr); | |
| 1764 | } elsif ($dbg_attr > 1 && $line =~ /^.+($Modifier)/) { | |
| 1765 | ERROR("TEST: is not attr ($1 is)\n". $herecurr); | |
| 1766 | } | |
| 1767 | next; | |
| 1768 | } | |
| 1769 | ||
| 1770 | # check for initialisation to aggregates open brace on the next line | |
| 1771 | if ($line =~ /^.\s*{/ && | |
| 1772 | $prevline =~ /(?:^|[^=])=\s*$/) { | |
| 1773 | ERROR("that open brace { should be on the previous line\n" . $hereprev); | |
| 1774 | } | |
| 1775 | ||
| 1776 | # | |
| 1777 | # Checks which are anchored on the added line. | |
| 1778 | # | |
| 1779 | ||
| 1780 | # check for malformed paths in #include statements (uses RAW line) | |
| 1781 | if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) { | |
| 1782 | my $path = $1; | |
| 1783 | if ($path =~ m{//}) { | |
| 1784 | ERROR("malformed #include filename\n" . | |
| 1785 | $herecurr); | |
| 1786 | } | |
| 1787 | } | |
| 1788 | ||
| 1789 | # no C99 // comments | |
| 1790 | if ($line =~ m{//}) { | |
| 1791 | ERROR("do not use C99 // comments\n" . $herecurr); | |
| 1792 | } | |
| 1793 | # Remove C99 comments. | |
| 1794 | $line =~ s@//.*@@; | |
| 1795 | $opline =~ s@//.*@@; | |
| 1796 | ||
| 1797 | # EXPORT_SYMBOL should immediately follow the thing it is exporting, consider | |
| 1798 | # the whole statement. | |
| 1799 | #print "APW <$lines[$realline_next - 1]>\n"; | |
| 1800 | if (defined $realline_next && | |
| 1801 | exists $lines[$realline_next - 1] && | |
| 1802 | !defined $suppress_export{$realline_next} && | |
| 1803 | ($lines[$realline_next - 1] =~ /EXPORT_SYMBOL.*\((.*)\)/ || | |
| 1804 | $lines[$realline_next - 1] =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) { | |
| 1805 | # Handle definitions which produce identifiers with | |
| 1806 | # a prefix: | |
| 1807 | # XXX(foo); | |
| 1808 | # EXPORT_SYMBOL(something_foo); | |
| 1809 | my $name = $1; | |
| 1810 | if ($stat =~ /^.([A-Z_]+)\s*\(\s*($Ident)/ && | |
| 1811 | $name =~ /^${Ident}_$2/) { | |
| 1812 | #print "FOO C name<$name>\n"; | |
| 1813 | $suppress_export{$realline_next} = 1; | |
| 1814 | ||
| 1815 | } elsif ($stat !~ /(?: | |
| 1816 | \n.}\s*$| | |
| 1817 | ^.DEFINE_$Ident\(\Q$name\E\)| | |
| 1818 | ^.DECLARE_$Ident\(\Q$name\E\)| | |
| 1819 | ^.LIST_HEAD\(\Q$name\E\)| | |
| 1820 | ^.(?:$Storage\s+)?$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(| | |
| 1821 | \b\Q$name\E(?:\s+$Attribute)*\s*(?:;|=|\[|\() | |
| 1822 | )/x) { | |
| 1823 | #print "FOO A<$lines[$realline_next - 1]> stat<$stat> name<$name>\n"; | |
| 1824 | $suppress_export{$realline_next} = 2; | |
| 1825 | } else { | |
| 1826 | $suppress_export{$realline_next} = 1; | |
| 1827 | } | |
| 1828 | } | |
| 1829 | if (!defined $suppress_export{$linenr} && | |
| 1830 | $prevline =~ /^.\s*$/ && | |
| 1831 | ($line =~ /EXPORT_SYMBOL.*\((.*)\)/ || | |
| 1832 | $line =~ /EXPORT_UNUSED_SYMBOL.*\((.*)\)/)) { | |
| 1833 | #print "FOO B <$lines[$linenr - 1]>\n"; | |
| 1834 | $suppress_export{$linenr} = 2; | |
| 1835 | } | |
| 1836 | if (defined $suppress_export{$linenr} && | |
| 1837 | $suppress_export{$linenr} == 2) { | |
| 1838 | WARN("EXPORT_SYMBOL(foo); should immediately follow its function/variable\n" . $herecurr); | |
| 1839 | } | |
| 1840 | ||
| 1841 | # check for global initialisers. | |
| 1842 | if ($line =~ /^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) { | |
| 1843 | ERROR("do not initialise globals to 0 or NULL\n" . | |
| 1844 | $herecurr); | |
| 1845 | } | |
| 1846 | # check for static initialisers. | |
| 1847 | if ($line =~ /\bstatic\s.*=\s*(0|NULL|false)\s*;/) { | |
| 1848 | ERROR("do not initialise statics to 0 or NULL\n" . | |
| 1849 | $herecurr); | |
| 1850 | } | |
| 1851 | ||
| 1ec3f6f9 BS |
1852 | # * goes on variable not on type |
| 1853 | # (char*[ const]) | |
| 1854 | if ($line =~ m{\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\)}) { | |
| 1855 | my ($from, $to) = ($1, $1); | |
| 1856 | ||
| 1857 | # Should start with a space. | |
| 1858 | $to =~ s/^(\S)/ $1/; | |
| 1859 | # Should not end with a space. | |
| 1860 | $to =~ s/\s+$//; | |
| 1861 | # '*'s should not have spaces between. | |
| 1862 | while ($to =~ s/\*\s+\*/\*\*/) { | |
| 1863 | } | |
| 1864 | ||
| 1865 | #print "from<$from> to<$to>\n"; | |
| 1866 | if ($from ne $to) { | |
| 1867 | ERROR("\"(foo$from)\" should be \"(foo$to)\"\n" . $herecurr); | |
| 1868 | } | |
| 1869 | } elsif ($line =~ m{\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident)}) { | |
| 1870 | my ($from, $to, $ident) = ($1, $1, $2); | |
| 1871 | ||
| 1872 | # Should start with a space. | |
| 1873 | $to =~ s/^(\S)/ $1/; | |
| 1874 | # Should not end with a space. | |
| 1875 | $to =~ s/\s+$//; | |
| 1876 | # '*'s should not have spaces between. | |
| 1877 | while ($to =~ s/\*\s+\*/\*\*/) { | |
| 1878 | } | |
| 1879 | # Modifiers should have spaces. | |
| 1880 | $to =~ s/(\b$Modifier$)/$1 /; | |
| 1881 | ||
| 1882 | #print "from<$from> to<$to> ident<$ident>\n"; | |
| 1883 | if ($from ne $to && $ident !~ /^$Modifier$/) { | |
| 1884 | ERROR("\"foo${from}bar\" should be \"foo${to}bar\"\n" . $herecurr); | |
| 1885 | } | |
| 1886 | } | |
| 1887 | ||
| 1888 | # # no BUG() or BUG_ON() | |
| 1889 | # if ($line =~ /\b(BUG|BUG_ON)\b/) { | |
| 1890 | # print "Try to use WARN_ON & Recovery code rather than BUG() or BUG_ON()\n"; | |
| 1891 | # print "$herecurr"; | |
| 1892 | # $clean = 0; | |
| 1893 | # } | |
| 1894 | ||
| 1895 | if ($line =~ /\bLINUX_VERSION_CODE\b/) { | |
| 1896 | WARN("LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr); | |
| 1897 | } | |
| 1898 | ||
| 1899 | # printk should use KERN_* levels. Note that follow on printk's on the | |
| 1900 | # same line do not need a level, so we use the current block context | |
| 1901 | # to try and find and validate the current printk. In summary the current | |
| 68dfbcd4 | 1902 | # printk includes all preceding printk's which have no newline on the end. |
| 1ec3f6f9 BS |
1903 | # we assume the first bad printk is the one to report. |
| 1904 | if ($line =~ /\bprintk\((?!KERN_)\s*"/) { | |
| 1905 | my $ok = 0; | |
| 1906 | for (my $ln = $linenr - 1; $ln >= $first_line; $ln--) { | |
| 1907 | #print "CHECK<$lines[$ln - 1]\n"; | |
| e7d81004 | 1908 | # we have a preceding printk if it ends |
| 1ec3f6f9 BS |
1909 | # with "\n" ignore it, else it is to blame |
| 1910 | if ($lines[$ln - 1] =~ m{\bprintk\(}) { | |
| 1911 | if ($rawlines[$ln - 1] !~ m{\\n"}) { | |
| 1912 | $ok = 1; | |
| 1913 | } | |
| 1914 | last; | |
| 1915 | } | |
| 1916 | } | |
| 1917 | if ($ok == 0) { | |
| 1918 | WARN("printk() should include KERN_ facility level\n" . $herecurr); | |
| 1919 | } | |
| 1920 | } | |
| 1921 | ||
| 1922 | # function brace can't be on same line, except for #defines of do while, | |
| 1923 | # or if closed on same line | |
| 1924 | if (($line=~/$Type\s*$Ident\(.*\).*\s{/) and | |
| 1925 | !($line=~/\#\s*define.*do\s{/) and !($line=~/}/)) { | |
| 1926 | ERROR("open brace '{' following function declarations go on the next line\n" . $herecurr); | |
| 1927 | } | |
| 1928 | ||
| 1929 | # open braces for enum, union and struct go on the same line. | |
| 1930 | if ($line =~ /^.\s*{/ && | |
| 1931 | $prevline =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?\s*$/) { | |
| 1932 | ERROR("open brace '{' following $1 go on the same line\n" . $hereprev); | |
| 1933 | } | |
| 1934 | ||
| 71c47b01 PB |
1935 | # ... however, open braces on typedef lines should be avoided. |
| 1936 | if ($line =~ /^.\s*typedef\s+(enum|union|struct)(?:\s+$Ident\b)?.*[^;]$/) { | |
| 1937 | ERROR("typedefs should be separate from struct declaration\n" . $herecurr); | |
| 1938 | } | |
| 1939 | ||
| 1ec3f6f9 BS |
1940 | # missing space after union, struct or enum definition |
| 1941 | if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?(?:\s+$Ident)?[=\{]/) { | |
| 71c47b01 | 1942 | ERROR("missing space after $1 definition\n" . $herecurr); |
| 1ec3f6f9 BS |
1943 | } |
| 1944 | ||
| 1945 | # check for spacing round square brackets; allowed: | |
| 1946 | # 1. with a type on the left -- int [] a; | |
| 1947 | # 2. at the beginning of a line for slice initialisers -- [0...10] = 5, | |
| 1948 | # 3. inside a curly brace -- = { [0...10] = 5 } | |
| 1949 | while ($line =~ /(.*?\s)\[/g) { | |
| 1950 | my ($where, $prefix) = ($-[1], $1); | |
| 1951 | if ($prefix !~ /$Type\s+$/ && | |
| 1952 | ($where != 0 || $prefix !~ /^.\s+$/) && | |
| 1953 | $prefix !~ /{\s+$/) { | |
| 1954 | ERROR("space prohibited before open square bracket '['\n" . $herecurr); | |
| 1955 | } | |
| 1956 | } | |
| 1957 | ||
| 1958 | # check for spaces between functions and their parentheses. | |
| 1959 | while ($line =~ /($Ident)\s+\(/g) { | |
| 1960 | my $name = $1; | |
| 1961 | my $ctx_before = substr($line, 0, $-[1]); | |
| 1962 | my $ctx = "$ctx_before$name"; | |
| 1963 | ||
| 1964 | # Ignore those directives where spaces _are_ permitted. | |
| 1965 | if ($name =~ /^(?: | |
| 1966 | if|for|while|switch|return|case| | |
| 1967 | volatile|__volatile__| | |
| 1968 | __attribute__|format|__extension__| | |
| 1969 | asm|__asm__)$/x) | |
| 1970 | { | |
| 1971 | ||
| 69d5d21f TS |
1972 | # Ignore 'catch (...)' in C++ |
| 1973 | } elsif ($name =~ /^catch$/ && $realfile =~ /(\.cpp|\.h)$/) { | |
| 1974 | ||
| 1ec3f6f9 BS |
1975 | # cpp #define statements have non-optional spaces, ie |
| 1976 | # if there is a space between the name and the open | |
| 1977 | # parenthesis it is simply not a parameter group. | |
| 1978 | } elsif ($ctx_before =~ /^.\s*\#\s*define\s*$/) { | |
| 1979 | ||
| 1980 | # cpp #elif statement condition may start with a ( | |
| 1981 | } elsif ($ctx =~ /^.\s*\#\s*elif\s*$/) { | |
| 1982 | ||
| 1983 | # If this whole things ends with a type its most | |
| 1984 | # likely a typedef for a function. | |
| 1985 | } elsif ($ctx =~ /$Type$/) { | |
| 1986 | ||
| 1987 | } else { | |
| 1988 | WARN("space prohibited between function name and open parenthesis '('\n" . $herecurr); | |
| 1989 | } | |
| 1990 | } | |
| 1991 | # Check operator spacing. | |
| 1992 | if (!($line=~/\#\s*include/)) { | |
| 1993 | my $ops = qr{ | |
| 1994 | <<=|>>=|<=|>=|==|!=| | |
| 1995 | \+=|-=|\*=|\/=|%=|\^=|\|=|&=| | |
| 1996 | =>|->|<<|>>|<|>|=|!|~| | |
| 1997 | &&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%| | |
| 69d5d21f | 1998 | \?|::|: |
| 1ec3f6f9 BS |
1999 | }x; |
| 2000 | my @elements = split(/($ops|;)/, $opline); | |
| 2001 | my $off = 0; | |
| 2002 | ||
| 2003 | my $blank = copy_spacing($opline); | |
| 2004 | ||
| 2005 | for (my $n = 0; $n < $#elements; $n += 2) { | |
| 2006 | $off += length($elements[$n]); | |
| 2007 | ||
| e7d81004 | 2008 | # Pick up the preceding and succeeding characters. |
| 1ec3f6f9 BS |
2009 | my $ca = substr($opline, 0, $off); |
| 2010 | my $cc = ''; | |
| 2011 | if (length($opline) >= ($off + length($elements[$n + 1]))) { | |
| 2012 | $cc = substr($opline, $off + length($elements[$n + 1])); | |
| 2013 | } | |
| 2014 | my $cb = "$ca$;$cc"; | |
| 2015 | ||
| 2016 | my $a = ''; | |
| 2017 | $a = 'V' if ($elements[$n] ne ''); | |
| 2018 | $a = 'W' if ($elements[$n] =~ /\s$/); | |
| 2019 | $a = 'C' if ($elements[$n] =~ /$;$/); | |
| 2020 | $a = 'B' if ($elements[$n] =~ /(\[|\()$/); | |
| 2021 | $a = 'O' if ($elements[$n] eq ''); | |
| 2022 | $a = 'E' if ($ca =~ /^\s*$/); | |
| 2023 | ||
| 2024 | my $op = $elements[$n + 1]; | |
| 2025 | ||
| 2026 | my $c = ''; | |
| 2027 | if (defined $elements[$n + 2]) { | |
| 2028 | $c = 'V' if ($elements[$n + 2] ne ''); | |
| 2029 | $c = 'W' if ($elements[$n + 2] =~ /^\s/); | |
| 2030 | $c = 'C' if ($elements[$n + 2] =~ /^$;/); | |
| 2031 | $c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/); | |
| 2032 | $c = 'O' if ($elements[$n + 2] eq ''); | |
| 2033 | $c = 'E' if ($elements[$n + 2] =~ /^\s*\\$/); | |
| 2034 | } else { | |
| 2035 | $c = 'E'; | |
| 2036 | } | |
| 2037 | ||
| 2038 | my $ctx = "${a}x${c}"; | |
| 2039 | ||
| 2040 | my $at = "(ctx:$ctx)"; | |
| 2041 | ||
| 2042 | my $ptr = substr($blank, 0, $off) . "^"; | |
| 2043 | my $hereptr = "$hereline$ptr\n"; | |
| 2044 | ||
| 2045 | # Pull out the value of this operator. | |
| 2046 | my $op_type = substr($curr_values, $off + 1, 1); | |
| 2047 | ||
| 2048 | # Get the full operator variant. | |
| 2049 | my $opv = $op . substr($curr_vars, $off, 1); | |
| 2050 | ||
| 2051 | # Ignore operators passed as parameters. | |
| 2052 | if ($op_type ne 'V' && | |
| 2053 | $ca =~ /\s$/ && $cc =~ /^\s*,/) { | |
| 2054 | ||
| 2055 | # # Ignore comments | |
| 2056 | # } elsif ($op =~ /^$;+$/) { | |
| 2057 | ||
| 2058 | # ; should have either the end of line or a space or \ after it | |
| 2059 | } elsif ($op eq ';') { | |
| 2060 | if ($ctx !~ /.x[WEBC]/ && | |
| 2061 | $cc !~ /^\\/ && $cc !~ /^;/) { | |
| 2062 | ERROR("space required after that '$op' $at\n" . $hereptr); | |
| 2063 | } | |
| 2064 | ||
| 2065 | # // is a comment | |
| 2066 | } elsif ($op eq '//') { | |
| 2067 | ||
| 69d5d21f TS |
2068 | # Ignore : used in class declaration in C++ |
| 2069 | } elsif ($opv eq ':B' && $ctx =~ /Wx[WE]/ && | |
| 2070 | $line =~ /class/ && $realfile =~ /(\.cpp|\.h)$/) { | |
| 2071 | ||
| 1ec3f6f9 BS |
2072 | # No spaces for: |
| 2073 | # -> | |
| 2074 | # : when part of a bitfield | |
| 2075 | } elsif ($op eq '->' || $opv eq ':B') { | |
| 2076 | if ($ctx =~ /Wx.|.xW/) { | |
| 2077 | ERROR("spaces prohibited around that '$op' $at\n" . $hereptr); | |
| 2078 | } | |
| 2079 | ||
| 2080 | # , must have a space on the right. | |
| 9fbe4784 | 2081 | # not required when having a single },{ on one line |
| 1ec3f6f9 | 2082 | } elsif ($op eq ',') { |
| 9fbe4784 AG |
2083 | if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/ && |
| 2084 | ($elements[$n] . $elements[$n + 2]) !~ " *}{") { | |
| 1ec3f6f9 BS |
2085 | ERROR("space required after that '$op' $at\n" . $hereptr); |
| 2086 | } | |
| 2087 | ||
| 2088 | # '*' as part of a type definition -- reported already. | |
| 2089 | } elsif ($opv eq '*_') { | |
| 2090 | #warn "'*' is part of type\n"; | |
| 2091 | ||
| 2092 | # unary operators should have a space before and | |
| 2093 | # none after. May be left adjacent to another | |
| 2094 | # unary operator, or a cast | |
| 2095 | } elsif ($op eq '!' || $op eq '~' || | |
| 2096 | $opv eq '*U' || $opv eq '-U' || | |
| 2097 | $opv eq '&U' || $opv eq '&&U') { | |
| 69d5d21f TS |
2098 | if ($op eq '~' && $ca =~ /::$/ && $realfile =~ /(\.cpp|\.h)$/) { |
| 2099 | # '~' used as a name of Destructor | |
| 2100 | ||
| 2101 | } elsif ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) { | |
| 1ec3f6f9 BS |
2102 | ERROR("space required before that '$op' $at\n" . $hereptr); |
| 2103 | } | |
| 2104 | if ($op eq '*' && $cc =~/\s*$Modifier\b/) { | |
| 2105 | # A unary '*' may be const | |
| 2106 | ||
| 2107 | } elsif ($ctx =~ /.xW/) { | |
| 2108 | ERROR("space prohibited after that '$op' $at\n" . $hereptr); | |
| 2109 | } | |
| 2110 | ||
| 2111 | # unary ++ and unary -- are allowed no space on one side. | |
| 2112 | } elsif ($op eq '++' or $op eq '--') { | |
| 2113 | if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) { | |
| 2114 | ERROR("space required one side of that '$op' $at\n" . $hereptr); | |
| 2115 | } | |
| 2116 | if ($ctx =~ /Wx[BE]/ || | |
| 2117 | ($ctx =~ /Wx./ && $cc =~ /^;/)) { | |
| 2118 | ERROR("space prohibited before that '$op' $at\n" . $hereptr); | |
| 2119 | } | |
| 2120 | if ($ctx =~ /ExW/) { | |
| 2121 | ERROR("space prohibited after that '$op' $at\n" . $hereptr); | |
| 2122 | } | |
| 2123 | ||
| 2124 | ||
| 2125 | # << and >> may either have or not have spaces both sides | |
| 2126 | } elsif ($op eq '<<' or $op eq '>>' or | |
| 2127 | $op eq '&' or $op eq '^' or $op eq '|' or | |
| 2128 | $op eq '+' or $op eq '-' or | |
| 2129 | $op eq '*' or $op eq '/' or | |
| 2130 | $op eq '%') | |
| 2131 | { | |
| 2132 | if ($ctx =~ /Wx[^WCE]|[^WCE]xW/) { | |
| 2133 | ERROR("need consistent spacing around '$op' $at\n" . | |
| 2134 | $hereptr); | |
| 2135 | } | |
| 2136 | ||
| 2137 | # A colon needs no spaces before when it is | |
| 2138 | # terminating a case value or a label. | |
| 2139 | } elsif ($opv eq ':C' || $opv eq ':L') { | |
| 2140 | if ($ctx =~ /Wx./) { | |
| 2141 | ERROR("space prohibited before that '$op' $at\n" . $hereptr); | |
| 2142 | } | |
| 2143 | ||
| 2144 | # All the others need spaces both sides. | |
| 2145 | } elsif ($ctx !~ /[EWC]x[CWE]/) { | |
| 2146 | my $ok = 0; | |
| 2147 | ||
| 69d5d21f TS |
2148 | if ($realfile =~ /\.cpp|\.h$/) { |
| 2149 | # Ignore template arguments <...> in C++ | |
| 2150 | if (($op eq '<' || $op eq '>') && $line =~ /<.*>/) { | |
| 2151 | $ok = 1; | |
| 2152 | } | |
| 2153 | ||
| 2154 | # Ignore :: in C++ | |
| 2155 | if ($op eq '::') { | |
| 2156 | $ok = 1; | |
| 2157 | } | |
| 2158 | } | |
| 2159 | ||
| 1ec3f6f9 BS |
2160 | # Ignore email addresses <foo@bar> |
| 2161 | if (($op eq '<' && | |
| 2162 | $cc =~ /^\S+\@\S+>/) || | |
| 2163 | ($op eq '>' && | |
| 2164 | $ca =~ /<\S+\@\S+$/)) | |
| 2165 | { | |
| 2166 | $ok = 1; | |
| 2167 | } | |
| 2168 | ||
| 2169 | # Ignore ?: | |
| 2170 | if (($opv eq ':O' && $ca =~ /\?$/) || | |
| 2171 | ($op eq '?' && $cc =~ /^:/)) { | |
| 2172 | $ok = 1; | |
| 2173 | } | |
| 2174 | ||
| 2175 | if ($ok == 0) { | |
| 2176 | ERROR("spaces required around that '$op' $at\n" . $hereptr); | |
| 2177 | } | |
| 2178 | } | |
| 2179 | $off += length($elements[$n + 1]); | |
| 2180 | } | |
| 2181 | } | |
| 2182 | ||
| 2183 | # check for multiple assignments | |
| 2184 | if ($line =~ /^.\s*$Lval\s*=\s*$Lval\s*=(?!=)/) { | |
| 2185 | CHK("multiple assignments should be avoided\n" . $herecurr); | |
| 2186 | } | |
| 2187 | ||
| 2188 | ## # check for multiple declarations, allowing for a function declaration | |
| 2189 | ## # continuation. | |
| 2190 | ## if ($line =~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Ident.*/ && | |
| 2191 | ## $line !~ /^.\s*$Type\s+$Ident(?:\s*=[^,{]*)?\s*,\s*$Type\s*$Ident.*/) { | |
| 2192 | ## | |
| 2193 | ## # Remove any bracketed sections to ensure we do not | |
| 2194 | ## # falsly report the parameters of functions. | |
| 2195 | ## my $ln = $line; | |
| 2196 | ## while ($ln =~ s/\([^\(\)]*\)//g) { | |
| 2197 | ## } | |
| 2198 | ## if ($ln =~ /,/) { | |
| 2199 | ## WARN("declaring multiple variables together should be avoided\n" . $herecurr); | |
| 2200 | ## } | |
| 2201 | ## } | |
| 2202 | ||
| 2203 | #need space before brace following if, while, etc | |
| 2204 | if (($line =~ /\(.*\){/ && $line !~ /\($Type\){/) || | |
| 2205 | $line =~ /do{/) { | |
| 2206 | ERROR("space required before the open brace '{'\n" . $herecurr); | |
| 2207 | } | |
| 2208 | ||
| 2209 | # closing brace should have a space following it when it has anything | |
| 2210 | # on the line | |
| 2211 | if ($line =~ /}(?!(?:,|;|\)))\S/) { | |
| 2212 | ERROR("space required after that close brace '}'\n" . $herecurr); | |
| 2213 | } | |
| 2214 | ||
| 2215 | # check spacing on square brackets | |
| 2216 | if ($line =~ /\[\s/ && $line !~ /\[\s*$/) { | |
| 2217 | ERROR("space prohibited after that open square bracket '['\n" . $herecurr); | |
| 2218 | } | |
| 2219 | if ($line =~ /\s\]/) { | |
| 2220 | ERROR("space prohibited before that close square bracket ']'\n" . $herecurr); | |
| 2221 | } | |
| 2222 | ||
| 2223 | # check spacing on parentheses | |
| 2224 | if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ && | |
| 2225 | $line !~ /for\s*\(\s+;/) { | |
| 2226 | ERROR("space prohibited after that open parenthesis '('\n" . $herecurr); | |
| 2227 | } | |
| 2228 | if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ && | |
| 2229 | $line !~ /for\s*\(.*;\s+\)/ && | |
| 2230 | $line !~ /:\s+\)/) { | |
| 2231 | ERROR("space prohibited before that close parenthesis ')'\n" . $herecurr); | |
| 2232 | } | |
| 2233 | ||
| 1ec3f6f9 BS |
2234 | # Return is not a function. |
| 2235 | if (defined($stat) && $stat =~ /^.\s*return(\s*)(\(.*);/s) { | |
| 2236 | my $spacing = $1; | |
| 2237 | my $value = $2; | |
| 2238 | ||
| 2239 | # Flatten any parentheses | |
| 2240 | $value =~ s/\(/ \(/g; | |
| 2241 | $value =~ s/\)/\) /g; | |
| 2242 | while ($value =~ s/\[[^\{\}]*\]/1/ || | |
| 2243 | $value !~ /(?:$Ident|-?$Constant)\s* | |
| 2244 | $Compare\s* | |
| 2245 | (?:$Ident|-?$Constant)/x && | |
| 2246 | $value =~ s/\([^\(\)]*\)/1/) { | |
| 2247 | } | |
| 2248 | #print "value<$value>\n"; | |
| 2249 | if ($value =~ /^\s*(?:$Ident|-?$Constant)\s*$/) { | |
| 2250 | ERROR("return is not a function, parentheses are not required\n" . $herecurr); | |
| 2251 | ||
| 2252 | } elsif ($spacing !~ /\s+/) { | |
| 2253 | ERROR("space required before the open parenthesis '('\n" . $herecurr); | |
| 2254 | } | |
| 2255 | } | |
| 2256 | # Return of what appears to be an errno should normally be -'ve | |
| 2257 | if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) { | |
| 2258 | my $name = $1; | |
| 2259 | if ($name ne 'EOF' && $name ne 'ERROR') { | |
| 71c47b01 | 2260 | WARN("return of an errno should typically be -ve (return -$1)\n" . $herecurr); |
| 1ec3f6f9 BS |
2261 | } |
| 2262 | } | |
| 2263 | ||
| 2264 | # Need a space before open parenthesis after if, while etc | |
| 2265 | if ($line=~/\b(if|while|for|switch)\(/) { | |
| 2266 | ERROR("space required before the open parenthesis '('\n" . $herecurr); | |
| 2267 | } | |
| 2268 | ||
| 2269 | # Check for illegal assignment in if conditional -- and check for trailing | |
| 2270 | # statements after the conditional. | |
| 2271 | if ($line =~ /do\s*(?!{)/) { | |
| 2272 | my ($stat_next) = ctx_statement_block($line_nr_next, | |
| 2273 | $remain_next, $off_next); | |
| 2274 | $stat_next =~ s/\n./\n /g; | |
| 2275 | ##print "stat<$stat> stat_next<$stat_next>\n"; | |
| 2276 | ||
| 2277 | if ($stat_next =~ /^\s*while\b/) { | |
| 2278 | # If the statement carries leading newlines, | |
| 2279 | # then count those as offsets. | |
| 2280 | my ($whitespace) = | |
| 2281 | ($stat_next =~ /^((?:\s*\n[+-])*\s*)/s); | |
| 2282 | my $offset = | |
| 2283 | statement_rawlines($whitespace) - 1; | |
| 2284 | ||
| 2285 | $suppress_whiletrailers{$line_nr_next + | |
| 2286 | $offset} = 1; | |
| 2287 | } | |
| 2288 | } | |
| 2289 | if (!defined $suppress_whiletrailers{$linenr} && | |
| 2290 | $line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) { | |
| 2291 | my ($s, $c) = ($stat, $cond); | |
| 2292 | ||
| 2293 | if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) { | |
| 2294 | ERROR("do not use assignment in if condition\n" . $herecurr); | |
| 2295 | } | |
| 2296 | ||
| 2297 | # Find out what is on the end of the line after the | |
| 2298 | # conditional. | |
| 2299 | substr($s, 0, length($c), ''); | |
| 2300 | $s =~ s/\n.*//g; | |
| 2301 | $s =~ s/$;//g; # Remove any comments | |
| 2302 | if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ && | |
| 2303 | $c !~ /}\s*while\s*/) | |
| 2304 | { | |
| 2305 | # Find out how long the conditional actually is. | |
| 2306 | my @newlines = ($c =~ /\n/gs); | |
| 2307 | my $cond_lines = 1 + $#newlines; | |
| 2308 | my $stat_real = ''; | |
| 2309 | ||
| 2310 | $stat_real = raw_line($linenr, $cond_lines) | |
| 2311 | . "\n" if ($cond_lines); | |
| 2312 | if (defined($stat_real) && $cond_lines > 1) { | |
| 2313 | $stat_real = "[...]\n$stat_real"; | |
| 2314 | } | |
| 2315 | ||
| 2316 | ERROR("trailing statements should be on next line\n" . $herecurr . $stat_real); | |
| 2317 | } | |
| 2318 | } | |
| 2319 | ||
| 2320 | # Check for bitwise tests written as boolean | |
| 2321 | if ($line =~ / | |
| 2322 | (?: | |
| 2323 | (?:\[|\(|\&\&|\|\|) | |
| 2324 | \s*0[xX][0-9]+\s* | |
| 2325 | (?:\&\&|\|\|) | |
| 2326 | | | |
| 2327 | (?:\&\&|\|\|) | |
| 2328 | \s*0[xX][0-9]+\s* | |
| 2329 | (?:\&\&|\|\||\)|\]) | |
| 2330 | )/x) | |
| 2331 | { | |
| 2332 | WARN("boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr); | |
| 2333 | } | |
| 2334 | ||
| 2335 | # if and else should not have general statements after it | |
| 2336 | if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) { | |
| 2337 | my $s = $1; | |
| 2338 | $s =~ s/$;//g; # Remove any comments | |
| 2339 | if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) { | |
| 2340 | ERROR("trailing statements should be on next line\n" . $herecurr); | |
| 2341 | } | |
| 2342 | } | |
| 2343 | # if should not continue a brace | |
| 2344 | if ($line =~ /}\s*if\b/) { | |
| 2345 | ERROR("trailing statements should be on next line\n" . | |
| 2346 | $herecurr); | |
| 2347 | } | |
| 2348 | # case and default should not have general statements after them | |
| 2349 | if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g && | |
| 2350 | $line !~ /\G(?: | |
| 2351 | (?:\s*$;*)(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$| | |
| 2352 | \s*return\s+ | |
| 2353 | )/xg) | |
| 2354 | { | |
| 2355 | ERROR("trailing statements should be on next line\n" . $herecurr); | |
| 2356 | } | |
| 2357 | ||
| 2358 | # Check for }<nl>else {, these must be at the same | |
| 2359 | # indent level to be relevant to each other. | |
| 2360 | if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and | |
| 2361 | $previndent == $indent) { | |
| 2362 | ERROR("else should follow close brace '}'\n" . $hereprev); | |
| 2363 | } | |
| 2364 | ||
| 2365 | if ($prevline=~/}\s*$/ and $line=~/^.\s*while\s*/ and | |
| 2366 | $previndent == $indent) { | |
| 2367 | my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0); | |
| 2368 | ||
| 2369 | # Find out what is on the end of the line after the | |
| 2370 | # conditional. | |
| 2371 | substr($s, 0, length($c), ''); | |
| 2372 | $s =~ s/\n.*//g; | |
| 2373 | ||
| 2374 | if ($s =~ /^\s*;/) { | |
| 2375 | ERROR("while should follow close brace '}'\n" . $hereprev); | |
| 2376 | } | |
| 2377 | } | |
| 2378 | ||
| 2379 | #studly caps, commented out until figure out how to distinguish between use of existing and adding new | |
| 2380 | # if (($line=~/[\w_][a-z\d]+[A-Z]/) and !($line=~/print/)) { | |
| 2381 | # print "No studly caps, use _\n"; | |
| 2382 | # print "$herecurr"; | |
| 2383 | # $clean = 0; | |
| 2384 | # } | |
| 2385 | ||
| 2386 | #no spaces allowed after \ in define | |
| 2387 | if ($line=~/\#\s*define.*\\\s$/) { | |
| 2388 | WARN("Whitepspace after \\ makes next lines useless\n" . $herecurr); | |
| 2389 | } | |
| 2390 | ||
| 2391 | #warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line) | |
| 2392 | if ($tree && $rawline =~ m{^.\s*\#\s*include\s*\<asm\/(.*)\.h\>}) { | |
| 2393 | my $file = "$1.h"; | |
| 2394 | my $checkfile = "include/linux/$file"; | |
| 2395 | if (-f "$root/$checkfile" && | |
| 2396 | $realfile ne $checkfile && | |
| 2397 | $1 !~ /$allowed_asm_includes/) | |
| 2398 | { | |
| 2399 | if ($realfile =~ m{^arch/}) { | |
| 2400 | CHK("Consider using #include <linux/$file> instead of <asm/$file>\n" . $herecurr); | |
| 2401 | } else { | |
| 2402 | WARN("Use #include <linux/$file> instead of <asm/$file>\n" . $herecurr); | |
| 2403 | } | |
| 2404 | } | |
| 2405 | } | |
| 2406 | ||
| 2407 | # multi-statement macros should be enclosed in a do while loop, grab the | |
| 2408 | # first statement and ensure its the whole macro if its not enclosed | |
| 2409 | # in a known good container | |
| 2410 | if ($realfile !~ m@/vmlinux.lds.h$@ && | |
| 2411 | $line =~ /^.\s*\#\s*define\s*$Ident(\()?/) { | |
| 2412 | my $ln = $linenr; | |
| 2413 | my $cnt = $realcnt; | |
| 2414 | my ($off, $dstat, $dcond, $rest); | |
| 2415 | my $ctx = ''; | |
| 2416 | ||
| 2417 | my $args = defined($1); | |
| 2418 | ||
| 2419 | # Find the end of the macro and limit our statement | |
| 2420 | # search to that. | |
| 2421 | while ($cnt > 0 && defined $lines[$ln - 1] && | |
| 2422 | $lines[$ln - 1] =~ /^(?:-|..*\\$)/) | |
| 2423 | { | |
| 2424 | $ctx .= $rawlines[$ln - 1] . "\n"; | |
| 2425 | $cnt-- if ($lines[$ln - 1] !~ /^-/); | |
| 2426 | $ln++; | |
| 2427 | } | |
| 2428 | $ctx .= $rawlines[$ln - 1]; | |
| 2429 | ||
| 2430 | ($dstat, $dcond, $ln, $cnt, $off) = | |
| 2431 | ctx_statement_block($linenr, $ln - $linenr + 1, 0); | |
| 2432 | #print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n"; | |
| 2433 | #print "LINE<$lines[$ln-1]> len<" . length($lines[$ln-1]) . "\n"; | |
| 2434 | ||
| 2435 | # Extract the remainder of the define (if any) and | |
| 2436 | # rip off surrounding spaces, and trailing \'s. | |
| 2437 | $rest = ''; | |
| 2438 | while ($off != 0 || ($cnt > 0 && $rest =~ /\\\s*$/)) { | |
| 2439 | #print "ADDING cnt<$cnt> $off <" . substr($lines[$ln - 1], $off) . "> rest<$rest>\n"; | |
| 2440 | if ($off != 0 || $lines[$ln - 1] !~ /^-/) { | |
| 2441 | $rest .= substr($lines[$ln - 1], $off) . "\n"; | |
| 2442 | $cnt--; | |
| 2443 | } | |
| 2444 | $ln++; | |
| 2445 | $off = 0; | |
| 2446 | } | |
| 2447 | $rest =~ s/\\\n.//g; | |
| 2448 | $rest =~ s/^\s*//s; | |
| 2449 | $rest =~ s/\s*$//s; | |
| 2450 | ||
| 2451 | # Clean up the original statement. | |
| 2452 | if ($args) { | |
| 2453 | substr($dstat, 0, length($dcond), ''); | |
| 2454 | } else { | |
| 2455 | $dstat =~ s/^.\s*\#\s*define\s+$Ident\s*//; | |
| 2456 | } | |
| 2457 | $dstat =~ s/$;//g; | |
| 2458 | $dstat =~ s/\\\n.//g; | |
| 2459 | $dstat =~ s/^\s*//s; | |
| 2460 | $dstat =~ s/\s*$//s; | |
| 2461 | ||
| 2462 | # Flatten any parentheses and braces | |
| 2463 | while ($dstat =~ s/\([^\(\)]*\)/1/ || | |
| 2464 | $dstat =~ s/\{[^\{\}]*\}/1/ || | |
| 2465 | $dstat =~ s/\[[^\{\}]*\]/1/) | |
| 2466 | { | |
| 2467 | } | |
| 2468 | ||
| 2469 | my $exceptions = qr{ | |
| 2470 | $Declare| | |
| 2471 | module_param_named| | |
| 2472 | MODULE_PARAM_DESC| | |
| 2473 | DECLARE_PER_CPU| | |
| 2474 | DEFINE_PER_CPU| | |
| 2475 | __typeof__\(| | |
| 2476 | union| | |
| 2477 | struct| | |
| 2478 | \.$Ident\s*=\s*| | |
| 2479 | ^\"|\"$ | |
| 2480 | }x; | |
| 2481 | #print "REST<$rest> dstat<$dstat> ctx<$ctx>\n"; | |
| 2482 | if ($rest ne '' && $rest ne ',') { | |
| 2483 | if ($rest !~ /while\s*\(/ && | |
| 2484 | $dstat !~ /$exceptions/) | |
| 2485 | { | |
| 2486 | ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n"); | |
| 2487 | } | |
| 2488 | ||
| 2489 | } elsif ($ctx !~ /;/) { | |
| 2490 | if ($dstat ne '' && | |
| 2491 | $dstat !~ /^(?:$Ident|-?$Constant)$/ && | |
| 2492 | $dstat !~ /$exceptions/ && | |
| 2493 | $dstat !~ /^\.$Ident\s*=/ && | |
| 2494 | $dstat =~ /$Operators/) | |
| 2495 | { | |
| 2496 | ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n"); | |
| 2497 | } | |
| 2498 | } | |
| 2499 | } | |
| 2500 | ||
| 2501 | # make sure symbols are always wrapped with VMLINUX_SYMBOL() ... | |
| 2502 | # all assignments may have only one of the following with an assignment: | |
| 2503 | # . | |
| 2504 | # ALIGN(...) | |
| 2505 | # VMLINUX_SYMBOL(...) | |
| 2506 | if ($realfile eq 'vmlinux.lds.h' && $line =~ /(?:(?:^|\s)$Ident\s*=|=\s*$Ident(?:\s|$))/) { | |
| 2507 | WARN("vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr); | |
| 2508 | } | |
| 2509 | ||
| b6469683 BS |
2510 | # check for missing bracing round if etc |
| 2511 | if ($line =~ /(^.*)\bif\b/ && $line !~ /\#\s*if/) { | |
| 1ec3f6f9 BS |
2512 | my ($level, $endln, @chunks) = |
| 2513 | ctx_statement_full($linenr, $realcnt, 1); | |
| 69402a69 DS |
2514 | if ($dbg_adv_apw) { |
| 2515 | print "APW: chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n"; | |
| 2516 | print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n" | |
| 2517 | if $#chunks >= 1; | |
| 2518 | } | |
| b6469683 | 2519 | if ($#chunks >= 0 && $level == 0) { |
| 1ec3f6f9 BS |
2520 | my $allowed = 0; |
| 2521 | my $seen = 0; | |
| 2522 | my $herectx = $here . "\n"; | |
| 2523 | my $ln = $linenr - 1; | |
| 2524 | for my $chunk (@chunks) { | |
| 2525 | my ($cond, $block) = @{$chunk}; | |
| 2526 | ||
| 2527 | # If the condition carries leading newlines, then count those as offsets. | |
| 2528 | my ($whitespace) = ($cond =~ /^((?:\s*\n[+-])*\s*)/s); | |
| 2529 | my $offset = statement_rawlines($whitespace) - 1; | |
| 2530 | ||
| 2531 | #print "COND<$cond> whitespace<$whitespace> offset<$offset>\n"; | |
| 2532 | ||
| 2533 | # We have looked at and allowed this specific line. | |
| 2534 | $suppress_ifbraces{$ln + $offset} = 1; | |
| 2535 | ||
| 2536 | $herectx .= "$rawlines[$ln + $offset]\n[...]\n"; | |
| 2537 | $ln += statement_rawlines($block) - 1; | |
| 2538 | ||
| 2539 | substr($block, 0, length($cond), ''); | |
| 2540 | ||
| a97ceca5 HR |
2541 | my $spaced_block = $block; |
| 2542 | $spaced_block =~ s/\n\+/ /g; | |
| 2543 | ||
| 2544 | $seen++ if ($spaced_block =~ /^\s*{/); | |
| 1ec3f6f9 | 2545 | |
| 69402a69 DS |
2546 | print "APW: cond<$cond> block<$block> allowed<$allowed>\n" |
| 2547 | if $dbg_adv_apw; | |
| 1ec3f6f9 | 2548 | if (statement_lines($cond) > 1) { |
| 69402a69 DS |
2549 | print "APW: ALLOWED: cond<$cond>\n" |
| 2550 | if $dbg_adv_apw; | |
| 2551 | $allowed = 1; | |
| 1ec3f6f9 BS |
2552 | } |
| 2553 | if ($block =~/\b(?:if|for|while)\b/) { | |
| 69402a69 DS |
2554 | print "APW: ALLOWED: block<$block>\n" |
| 2555 | if $dbg_adv_apw; | |
| 2556 | $allowed = 1; | |
| 1ec3f6f9 BS |
2557 | } |
| 2558 | if (statement_block_size($block) > 1) { | |
| 69402a69 DS |
2559 | print "APW: ALLOWED: lines block<$block>\n" |
| 2560 | if $dbg_adv_apw; | |
| 2561 | $allowed = 1; | |
| 1ec3f6f9 BS |
2562 | } |
| 2563 | } | |
| 01c4330b | 2564 | if ($seen != ($#chunks + 1)) { |
| b6469683 | 2565 | WARN("braces {} are necessary for all arms of this statement\n" . $herectx); |
| 1ec3f6f9 BS |
2566 | } |
| 2567 | } | |
| 2568 | } | |
| 2569 | if (!defined $suppress_ifbraces{$linenr - 1} && | |
| 789f88d0 | 2570 | $line =~ /\b(if|while|for|else)\b/ && |
| d0510af2 | 2571 | $line !~ /\#\s*if/ && |
| 789f88d0 | 2572 | $line !~ /\#\s*else/) { |
| 1ec3f6f9 BS |
2573 | my $allowed = 0; |
| 2574 | ||
| dfe7053a DS |
2575 | # Check the pre-context. |
| 2576 | if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) { | |
| 2577 | my $pre = $1; | |
| 2578 | ||
| 2579 | if ($line !~ /else/) { | |
| 2580 | print "APW: ALLOWED: pre<$pre> line<$line>\n" | |
| 2581 | if $dbg_adv_apw; | |
| 2582 | $allowed = 1; | |
| 2583 | } | |
| 2584 | } | |
| 1ec3f6f9 BS |
2585 | |
| 2586 | my ($level, $endln, @chunks) = | |
| 2587 | ctx_statement_full($linenr, $realcnt, $-[0]); | |
| 2588 | ||
| 2589 | # Check the condition. | |
| 2590 | my ($cond, $block) = @{$chunks[0]}; | |
| 5424302e DS |
2591 | print "CHECKING<$linenr> cond<$cond> block<$block>\n" |
| 2592 | if $dbg_adv_checking; | |
| 1ec3f6f9 BS |
2593 | if (defined $cond) { |
| 2594 | substr($block, 0, length($cond), ''); | |
| 2595 | } | |
| 2596 | if (statement_lines($cond) > 1) { | |
| 69402a69 DS |
2597 | print "APW: ALLOWED: cond<$cond>\n" |
| 2598 | if $dbg_adv_apw; | |
| 2599 | $allowed = 1; | |
| 1ec3f6f9 BS |
2600 | } |
| 2601 | if ($block =~/\b(?:if|for|while)\b/) { | |
| 69402a69 DS |
2602 | print "APW: ALLOWED: block<$block>\n" |
| 2603 | if $dbg_adv_apw; | |
| 2604 | $allowed = 1; | |
| 1ec3f6f9 BS |
2605 | } |
| 2606 | if (statement_block_size($block) > 1) { | |
| 69402a69 DS |
2607 | print "APW: ALLOWED: lines block<$block>\n" |
| 2608 | if $dbg_adv_apw; | |
| 2609 | $allowed = 1; | |
| 1ec3f6f9 BS |
2610 | } |
| 2611 | # Check the post-context. | |
| 2612 | if (defined $chunks[1]) { | |
| 2613 | my ($cond, $block) = @{$chunks[1]}; | |
| 2614 | if (defined $cond) { | |
| 2615 | substr($block, 0, length($cond), ''); | |
| 2616 | } | |
| 2617 | if ($block =~ /^\s*\{/) { | |
| 69402a69 DS |
2618 | print "APW: ALLOWED: chunk-1 block<$block>\n" |
| 2619 | if $dbg_adv_apw; | |
| 2620 | $allowed = 1; | |
| 1ec3f6f9 BS |
2621 | } |
| 2622 | } | |
| a99ac041 DS |
2623 | print "DCS: level=$level block<$block> allowed=$allowed\n" |
| 2624 | if $dbg_adv_dcs; | |
| b6469683 | 2625 | if ($level == 0 && $block !~ /^\s*\{/ && !$allowed) { |
| 1ec3f6f9 BS |
2626 | my $herectx = $here . "\n";; |
| 2627 | my $cnt = statement_rawlines($block); | |
| 2628 | ||
| 2629 | for (my $n = 0; $n < $cnt; $n++) { | |
| 2630 | $herectx .= raw_line($linenr, $n) . "\n";; | |
| 2631 | } | |
| 2632 | ||
| b6469683 | 2633 | WARN("braces {} are necessary even for single statement blocks\n" . $herectx); |
| 1ec3f6f9 BS |
2634 | } |
| 2635 | } | |
| 2636 | ||
| 2637 | # don't include deprecated include files (uses RAW line) | |
| 2638 | for my $inc (@dep_includes) { | |
| 2639 | if ($rawline =~ m@^.\s*\#\s*include\s*\<$inc>@) { | |
| 2640 | ERROR("Don't use <$inc>: see Documentation/feature-removal-schedule.txt\n" . $herecurr); | |
| 2641 | } | |
| 2642 | } | |
| 2643 | ||
| 2644 | # don't use deprecated functions | |
| 2645 | for my $func (@dep_functions) { | |
| 2646 | if ($line =~ /\b$func\b/) { | |
| 2647 | ERROR("Don't use $func(): see Documentation/feature-removal-schedule.txt\n" . $herecurr); | |
| 2648 | } | |
| 2649 | } | |
| 2650 | ||
| 2651 | # no volatiles please | |
| 2652 | my $asm_volatile = qr{\b(__asm__|asm)\s+(__volatile__|volatile)\b}; | |
| 2653 | if ($line =~ /\bvolatile\b/ && $line !~ /$asm_volatile/) { | |
| 2654 | WARN("Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n" . $herecurr); | |
| 2655 | } | |
| 2656 | ||
| 2657 | # SPIN_LOCK_UNLOCKED & RW_LOCK_UNLOCKED are deprecated | |
| 2658 | if ($line =~ /\b(SPIN_LOCK_UNLOCKED|RW_LOCK_UNLOCKED)/) { | |
| 2659 | ERROR("Use of $1 is deprecated: see Documentation/spinlocks.txt\n" . $herecurr); | |
| 2660 | } | |
| 2661 | ||
| 2662 | # warn about #if 0 | |
| 2663 | if ($line =~ /^.\s*\#\s*if\s+0\b/) { | |
| 71c47b01 | 2664 | WARN("if this code is redundant consider removing it\n" . |
| 1ec3f6f9 BS |
2665 | $herecurr); |
| 2666 | } | |
| 2667 | ||
| 71c47b01 | 2668 | # check for needless g_free() checks |
| 1ec3f6f9 BS |
2669 | if ($prevline =~ /\bif\s*\(([^\)]*)\)/) { |
| 2670 | my $expr = $1; | |
| 71c47b01 PB |
2671 | if ($line =~ /\bg_free\(\Q$expr\E\);/) { |
| 2672 | WARN("g_free(NULL) is safe this check is probably not required\n" . $hereprev); | |
| 1ec3f6f9 BS |
2673 | } |
| 2674 | } | |
| 2675 | # check for needless usb_free_urb() checks | |
| 2676 | if ($prevline =~ /\bif\s*\(([^\)]*)\)/) { | |
| 2677 | my $expr = $1; | |
| 2678 | if ($line =~ /\busb_free_urb\(\Q$expr\E\);/) { | |
| 2679 | WARN("usb_free_urb(NULL) is safe this check is probably not required\n" . $hereprev); | |
| 2680 | } | |
| 2681 | } | |
| 2682 | ||
| 2683 | # prefer usleep_range over udelay | |
| 2684 | if ($line =~ /\budelay\s*\(\s*(\w+)\s*\)/) { | |
| 2685 | # ignore udelay's < 10, however | |
| 2686 | if (! (($1 =~ /(\d+)/) && ($1 < 10)) ) { | |
| 2687 | CHK("usleep_range is preferred over udelay; see Documentation/timers/timers-howto.txt\n" . $line); | |
| 2688 | } | |
| 2689 | } | |
| 2690 | ||
| 2691 | # warn about unexpectedly long msleep's | |
| 2692 | if ($line =~ /\bmsleep\s*\((\d+)\);/) { | |
| 2693 | if ($1 < 20) { | |
| 2694 | WARN("msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt\n" . $line); | |
| 2695 | } | |
| 2696 | } | |
| 2697 | ||
| 2698 | # warn about #ifdefs in C files | |
| 2699 | # if ($line =~ /^.\s*\#\s*if(|n)def/ && ($realfile =~ /\.c$/)) { | |
| 2700 | # print "#ifdef in C files should be avoided\n"; | |
| 2701 | # print "$herecurr"; | |
| 2702 | # $clean = 0; | |
| 2703 | # } | |
| 2704 | ||
| 2705 | # warn about spacing in #ifdefs | |
| 2706 | if ($line =~ /^.\s*\#\s*(ifdef|ifndef|elif)\s\s+/) { | |
| 2707 | ERROR("exactly one space required after that #$1\n" . $herecurr); | |
| 2708 | } | |
| 2709 | ||
| 2710 | # check for spinlock_t definitions without a comment. | |
| 2711 | if ($line =~ /^.\s*(struct\s+mutex|spinlock_t)\s+\S+;/ || | |
| 2712 | $line =~ /^.\s*(DEFINE_MUTEX)\s*\(/) { | |
| 2713 | my $which = $1; | |
| 2714 | if (!ctx_has_comment($first_line, $linenr)) { | |
| 2715 | CHK("$1 definition without comment\n" . $herecurr); | |
| 2716 | } | |
| 2717 | } | |
| 2718 | # check for memory barriers without a comment. | |
| 71c47b01 | 2719 | if ($line =~ /\b(smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) { |
| 1ec3f6f9 | 2720 | if (!ctx_has_comment($first_line, $linenr)) { |
| 71c47b01 | 2721 | WARN("memory barrier without comment\n" . $herecurr); |
| 1ec3f6f9 BS |
2722 | } |
| 2723 | } | |
| 2724 | # check of hardware specific defines | |
| 71c47b01 PB |
2725 | # we have e.g. CONFIG_LINUX and CONFIG_WIN32 for common cases |
| 2726 | # where they might be necessary. | |
| 2727 | if ($line =~ m@^.\s*\#\s*if.*\b__@) { | |
| 2728 | WARN("architecture specific defines should be avoided\n" . $herecurr); | |
| 1ec3f6f9 BS |
2729 | } |
| 2730 | ||
| 2731 | # Check that the storage class is at the beginning of a declaration | |
| 2732 | if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) { | |
| 2733 | WARN("storage class should be at the beginning of the declaration\n" . $herecurr) | |
| 2734 | } | |
| 2735 | ||
| 2736 | # check the location of the inline attribute, that it is between | |
| 2737 | # storage class and type. | |
| 2738 | if ($line =~ /\b$Type\s+$Inline\b/ || | |
| 2739 | $line =~ /\b$Inline\s+$Storage\b/) { | |
| 2740 | ERROR("inline keyword should sit between storage class and type\n" . $herecurr); | |
| 2741 | } | |
| 2742 | ||
| 2743 | # Check for __inline__ and __inline, prefer inline | |
| 2744 | if ($line =~ /\b(__inline__|__inline)\b/) { | |
| 2745 | WARN("plain inline is preferred over $1\n" . $herecurr); | |
| 2746 | } | |
| 2747 | ||
| 2748 | # check for sizeof(&) | |
| 2749 | if ($line =~ /\bsizeof\s*\(\s*\&/) { | |
| 2750 | WARN("sizeof(& should be avoided\n" . $herecurr); | |
| 2751 | } | |
| 2752 | ||
| 2753 | # check for new externs in .c files. | |
| 2754 | if ($realfile =~ /\.c$/ && defined $stat && | |
| 2755 | $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s) | |
| 2756 | { | |
| 2757 | my $function_name = $1; | |
| 2758 | my $paren_space = $2; | |
| 2759 | ||
| 2760 | my $s = $stat; | |
| 2761 | if (defined $cond) { | |
| 2762 | substr($s, 0, length($cond), ''); | |
| 2763 | } | |
| 2764 | if ($s =~ /^\s*;/ && | |
| 2765 | $function_name ne 'uninitialized_var') | |
| 2766 | { | |
| 2767 | WARN("externs should be avoided in .c files\n" . $herecurr); | |
| 2768 | } | |
| 2769 | ||
| 2770 | if ($paren_space =~ /\n/) { | |
| 2771 | WARN("arguments for function declarations should follow identifier\n" . $herecurr); | |
| 2772 | } | |
| 2773 | ||
| 2774 | } elsif ($realfile =~ /\.c$/ && defined $stat && | |
| 2775 | $stat =~ /^.\s*extern\s+/) | |
| 2776 | { | |
| 2777 | WARN("externs should be avoided in .c files\n" . $herecurr); | |
| 2778 | } | |
| 2779 | ||
| 2780 | # checks for new __setup's | |
| 2781 | if ($rawline =~ /\b__setup\("([^"]*)"/) { | |
| 2782 | my $name = $1; | |
| 2783 | ||
| 2784 | if (!grep(/$name/, @setup_docs)) { | |
| 2785 | CHK("__setup appears un-documented -- check Documentation/kernel-parameters.txt\n" . $herecurr); | |
| 2786 | } | |
| 2787 | } | |
| 2788 | ||
| 71c47b01 PB |
2789 | # check for pointless casting of g_malloc return |
| 2790 | if ($line =~ /\*\s*\)\s*g_(try)?(m|re)alloc(0?)(_n)?\b/) { | |
| 2791 | if ($2 == 'm') { | |
| 2792 | WARN("unnecessary cast may hide bugs, use g_$1new$3 instead\n" . $herecurr); | |
| 2793 | } else { | |
| 2794 | WARN("unnecessary cast may hide bugs, use g_$1renew$3 instead\n" . $herecurr); | |
| 2795 | } | |
| 1ec3f6f9 BS |
2796 | } |
| 2797 | ||
| 2798 | # check for gcc specific __FUNCTION__ | |
| 2799 | if ($line =~ /__FUNCTION__/) { | |
| 2800 | WARN("__func__ should be used instead of gcc specific __FUNCTION__\n" . $herecurr); | |
| 2801 | } | |
| 2802 | ||
| 2803 | # check for semaphores used as mutexes | |
| 2804 | if ($line =~ /^.\s*(DECLARE_MUTEX|init_MUTEX)\s*\(/) { | |
| 2805 | WARN("mutexes are preferred for single holder semaphores\n" . $herecurr); | |
| 2806 | } | |
| 2807 | # check for semaphores used as mutexes | |
| 2808 | if ($line =~ /^.\s*init_MUTEX_LOCKED\s*\(/) { | |
| 2809 | WARN("consider using a completion\n" . $herecurr); | |
| 2810 | ||
| 2811 | } | |
| 71c47b01 PB |
2812 | # recommend qemu_strto* over strto* |
| 2813 | if ($line =~ /\b(strto.*?)\s*\(/) { | |
| 2814 | WARN("consider using qemu_$1 in preference to $1\n" . $herecurr); | |
| 1ec3f6f9 | 2815 | } |
| 71c47b01 PB |
2816 | # check for module_init(), use category-specific init macros explicitly please |
| 2817 | if ($line =~ /^module_init\s*\(/) { | |
| 2818 | WARN("please use block_init(), type_init() etc. instead of module_init()\n" . $herecurr); | |
| 1ec3f6f9 BS |
2819 | } |
| 2820 | # check for various ops structs, ensure they are const. | |
| 71c47b01 PB |
2821 | my $struct_ops = qr{AIOCBInfo| |
| 2822 | BdrvActionOps| | |
| 2823 | BlockDevOps| | |
| 2824 | BlockJobDriver| | |
| 2825 | DisplayChangeListenerOps| | |
| 2826 | GraphicHwOps| | |
| 2827 | IDEDMAOps| | |
| 2828 | KVMCapabilityInfo| | |
| 2829 | MemoryRegionIOMMUOps| | |
| 2830 | MemoryRegionOps| | |
| 2831 | MemoryRegionPortio| | |
| 2832 | QEMUFileOps| | |
| 2833 | SCSIBusInfo| | |
| 2834 | SCSIReqOps| | |
| 2835 | Spice[A-Z][a-zA-Z0-9]*Interface| | |
| 2836 | TPMDriverOps| | |
| 2837 | USBDesc[A-Z][a-zA-Z0-9]*| | |
| 2838 | VhostOps| | |
| 2839 | VMStateDescription| | |
| 2840 | VMStateInfo}x; | |
| 1ec3f6f9 | 2841 | if ($line !~ /\bconst\b/ && |
| 71c47b01 | 2842 | $line =~ /\b($struct_ops)\b/) { |
| 1ec3f6f9 BS |
2843 | WARN("struct $1 should normally be const\n" . |
| 2844 | $herecurr); | |
| 2845 | } | |
| 2846 | ||
| 2847 | # use of NR_CPUS is usually wrong | |
| 2848 | # ignore definitions of NR_CPUS and usage to define arrays as likely right | |
| 2849 | if ($line =~ /\bNR_CPUS\b/ && | |
| 2850 | $line !~ /^.\s*\s*#\s*if\b.*\bNR_CPUS\b/ && | |
| 2851 | $line !~ /^.\s*\s*#\s*define\b.*\bNR_CPUS\b/ && | |
| 2852 | $line !~ /^.\s*$Declare\s.*\[[^\]]*NR_CPUS[^\]]*\]/ && | |
| 2853 | $line !~ /\[[^\]]*\.\.\.[^\]]*NR_CPUS[^\]]*\]/ && | |
| 2854 | $line !~ /\[[^\]]*NR_CPUS[^\]]*\.\.\.[^\]]*\]/) | |
| 2855 | { | |
| 2856 | WARN("usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc\n" . $herecurr); | |
| 2857 | } | |
| 2858 | ||
| 2859 | # check for %L{u,d,i} in strings | |
| 2860 | my $string; | |
| 2861 | while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) { | |
| 2862 | $string = substr($rawline, $-[1], $+[1] - $-[1]); | |
| 2863 | $string =~ s/%%/__/g; | |
| 2864 | if ($string =~ /(?<!%)%L[udi]/) { | |
| 2865 | WARN("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr); | |
| 2866 | last; | |
| 2867 | } | |
| 2868 | } | |
| 2869 | ||
| 2870 | # whine mightly about in_atomic | |
| 2871 | if ($line =~ /\bin_atomic\s*\(/) { | |
| 2872 | if ($realfile =~ m@^drivers/@) { | |
| 2873 | ERROR("do not use in_atomic in drivers\n" . $herecurr); | |
| 2874 | } elsif ($realfile !~ m@^kernel/@) { | |
| 2875 | WARN("use of in_atomic() is incorrect outside core kernel code\n" . $herecurr); | |
| 2876 | } | |
| 2877 | } | |
| 2878 | ||
| 2879 | # check for lockdep_set_novalidate_class | |
| 2880 | if ($line =~ /^.\s*lockdep_set_novalidate_class\s*\(/ || | |
| 2881 | $line =~ /__lockdep_no_validate__\s*\)/ ) { | |
| 2882 | if ($realfile !~ m@^kernel/lockdep@ && | |
| 2883 | $realfile !~ m@^include/linux/lockdep@ && | |
| 2884 | $realfile !~ m@^drivers/base/core@) { | |
| 2885 | ERROR("lockdep_no_validate class is reserved for device->mutex.\n" . $herecurr); | |
| 2886 | } | |
| 2887 | } | |
| 9964d8f9 SW |
2888 | |
| 2889 | # QEMU specific tests | |
| 2890 | if ($rawline =~ /\b(?:Qemu|QEmu)\b/) { | |
| 2891 | WARN("use QEMU instead of Qemu or QEmu\n" . $herecurr); | |
| 2892 | } | |
| 8b6ee9ae SH |
2893 | |
| 2894 | # check for non-portable ffs() calls that have portable alternatives in QEMU | |
| 2895 | if ($line =~ /\bffs\(/) { | |
| 2896 | ERROR("use ctz32() instead of ffs()\n" . $herecurr); | |
| 2897 | } | |
| 2898 | if ($line =~ /\bffsl\(/) { | |
| 2899 | ERROR("use ctz32() or ctz64() instead of ffsl()\n" . $herecurr); | |
| 2900 | } | |
| 2901 | if ($line =~ /\bffsll\(/) { | |
| 2902 | ERROR("use ctz64() instead of ffsll()\n" . $herecurr); | |
| 2903 | } | |
| 1ec3f6f9 BS |
2904 | } |
| 2905 | ||
| 2906 | # If we have no input at all, then there is nothing to report on | |
| 2907 | # so just keep quiet. | |
| 2908 | if ($#rawlines == -1) { | |
| 2909 | exit(0); | |
| 2910 | } | |
| 2911 | ||
| 2912 | # In mailback mode only produce a report in the negative, for | |
| 2913 | # things that appear to be patches. | |
| 2914 | if ($mailback && ($clean == 1 || !$is_patch)) { | |
| 2915 | exit(0); | |
| 2916 | } | |
| 2917 | ||
| 2918 | # This is not a patch, and we are are in 'no-patch' mode so | |
| 2919 | # just keep quiet. | |
| 2920 | if (!$chk_patch && !$is_patch) { | |
| 2921 | exit(0); | |
| 2922 | } | |
| 2923 | ||
| 2924 | if (!$is_patch) { | |
| 2925 | ERROR("Does not appear to be a unified-diff format patch\n"); | |
| 2926 | } | |
| 2927 | if ($is_patch && $chk_signoff && $signoff == 0) { | |
| 2928 | ERROR("Missing Signed-off-by: line(s)\n"); | |
| 2929 | } | |
| 2930 | ||
| 2931 | print report_dump(); | |
| 2932 | if ($summary && !($clean == 1 && $quiet == 1)) { | |
| 2933 | print "$filename " if ($summary_file); | |
| 2934 | print "total: $cnt_error errors, $cnt_warn warnings, " . | |
| 2935 | (($check)? "$cnt_chk checks, " : "") . | |
| 2936 | "$cnt_lines lines checked\n"; | |
| 2937 | print "\n" if ($quiet == 0); | |
| 2938 | } | |
| 2939 | ||
| 2940 | if ($quiet == 0) { | |
| 2941 | # If there were whitespace errors which cleanpatch can fix | |
| 2942 | # then suggest that. | |
| b6469683 BS |
2943 | # if ($rpt_cleaners) { |
| 2944 | # print "NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or\n"; | |
| 2945 | # print " scripts/cleanfile\n\n"; | |
| 2946 | # } | |
| 1ec3f6f9 BS |
2947 | } |
| 2948 | ||
| 2949 | if ($clean == 1 && $quiet == 0) { | |
| 2950 | print "$vname has no obvious style problems and is ready for submission.\n" | |
| 2951 | } | |
| 2952 | if ($clean == 0 && $quiet == 0) { | |
| 2953 | print "$vname has style problems, please review. If any of these errors\n"; | |
| 2954 | print "are false positives report them to the maintainer, see\n"; | |
| 2955 | print "CHECKPATCH in MAINTAINERS.\n"; | |
| 2956 | } | |
| 2957 | ||
| 2958 | return $clean; | |
| 2959 | } |