1 #!/usr/bin/env perl 2 # SPDX-License-Identifier: GPL-2.0 3 4 use warnings; 5 use strict; 6 7 ## Copyright (c) 1998 Michael Zucchi, All Rights Reserved ## 8 ## Copyright (C) 2000, 1 Tim Waugh <twaugh@redhat.com> ## 9 ## Copyright (C) 2001 Simon Huggins ## 10 ## Copyright (C) 2005-2012 Randy Dunlap ## 11 ## Copyright (C) 2012 Dan Luedtke ## 12 ## ## 13 ## #define enhancements by Armin Kuster <akuster@mvista.com> ## 14 ## Copyright (c) 2000 MontaVista Software, Inc. ## 15 ## ## 16 ## This software falls under the GNU General Public License. ## 17 ## Please read the COPYING file for more information ## 18 19 # 18/01/2001 - Cleanups 20 # Functions prototyped as foo(void) same as foo() 21 # Stop eval'ing where we don't need to. 22 # -- huggie@earth.li 23 24 # 27/06/2001 - Allowed whitespace after initial "/**" and 25 # allowed comments before function declarations. 26 # -- Christian Kreibich <ck@whoop.org> 27 28 # Still to do: 29 # - add perldoc documentation 30 # - Look more closely at some of the scarier bits :) 31 32 # 26/05/2001 - Support for separate source and object trees. 33 # Return error code. 34 # Keith Owens <kaos@ocs.com.au> 35 36 # 23/09/2001 - Added support for typedefs, structs, enums and unions 37 # Support for Context section; can be terminated using empty line 38 # Small fixes (like spaces vs. \s in regex) 39 # -- Tim Jansen <tim@tjansen.de> 40 41 # 25/07/2012 - Added support for HTML5 42 # -- Dan Luedtke <mail@danrl.de> 43 44 sub usage { 45 my $message = <<"EOF"; 46 Usage: $0 [OPTION ...] FILE ... 47 48 Read C language source or header FILEs, extract embedded documentation comments, 49 and print formatted documentation to standard output. 50 51 The documentation comments are identified by "/**" opening comment mark. See 52 Documentation/doc-guide/kernel-doc.rst for the documentation comment syntax. 53 54 Output format selection (mutually exclusive): 55 -man Output troff manual page format. This is the default. 56 -rst Output reStructuredText format. 57 -none Do not output documentation, only warnings. 58 59 Output format selection modifier (affects only ReST output): 60 61 -sphinx-version Use the ReST C domain dialect compatible with an 62 specific Sphinx Version. 63 If not specified, kernel-doc will auto-detect using 64 the sphinx-build version found on PATH. 65 66 Output selection (mutually exclusive): 67 -export Only output documentation for symbols that have been 68 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL() 69 in any input FILE or -export-file FILE. 70 -internal Only output documentation for symbols that have NOT been 71 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL() 72 in any input FILE or -export-file FILE. 73 -function NAME Only output documentation for the given function(s) 74 or DOC: section title(s). All other functions and DOC: 75 sections are ignored. May be specified multiple times. 76 -nosymbol NAME Exclude the specified symbols from the output 77 documentation. May be specified multiple times. 78 79 Output selection modifiers: 80 -no-doc-sections Do not output DOC: sections. 81 -enable-lineno Enable output of #define LINENO lines. Only works with 82 reStructuredText format. 83 -export-file FILE Specify an additional FILE in which to look for 84 EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with 85 -export or -internal. May be specified multiple times. 86 87 Other parameters: 88 -v Verbose output, more warnings and other information. 89 -h Print this help. 90 -Werror Treat warnings as errors. 91 92 EOF 93 print $message; 94 exit 1; 95 } 96 97 # 98 # format of comments. 99 # In the following table, (...)? signifies optional structure. 100 # (...)* signifies 0 or more structure elements 101 # /** 102 # * function_name(:)? (- short description)? 103 # (* @parameterx: (description of parameter x)?)* 104 # (* a blank line)? 105 # * (Description:)? (Description of function)? 106 # * (section header: (section description)? )* 107 # (*)?*/ 108 # 109 # So .. the trivial example would be: 110 # 111 # /** 112 # * my_function 113 # */ 114 # 115 # If the Description: header tag is omitted, then there must be a blank line 116 # after the last parameter specification. 117 # e.g. 118 # /** 119 # * my_function - does my stuff 120 # * @my_arg: its mine damnit 121 # * 122 # * Does my stuff explained. 123 # */ 124 # 125 # or, could also use: 126 # /** 127 # * my_function - does my stuff 128 # * @my_arg: its mine damnit 129 # * Description: Does my stuff explained. 130 # */ 131 # etc. 132 # 133 # Besides functions you can also write documentation for structs, unions, 134 # enums and typedefs. Instead of the function name you must write the name 135 # of the declaration; the struct/union/enum/typedef must always precede 136 # the name. Nesting of declarations is not supported. 137 # Use the argument mechanism to document members or constants. 138 # e.g. 139 # /** 140 # * struct my_struct - short description 141 # * @a: first member 142 # * @b: second member 143 # * 144 # * Longer description 145 # */ 146 # struct my_struct { 147 # int a; 148 # int b; 149 # /* private: */ 150 # int c; 151 # }; 152 # 153 # All descriptions can be multiline, except the short function description. 154 # 155 # For really longs structs, you can also describe arguments inside the 156 # body of the struct. 157 # eg. 158 # /** 159 # * struct my_struct - short description 160 # * @a: first member 161 # * @b: second member 162 # * 163 # * Longer description 164 # */ 165 # struct my_struct { 166 # int a; 167 # int b; 168 # /** 169 # * @c: This is longer description of C 170 # * 171 # * You can use paragraphs to describe arguments 172 # * using this method. 173 # */ 174 # int c; 175 # }; 176 # 177 # This should be use only for struct/enum members. 178 # 179 # You can also add additional sections. When documenting kernel functions you 180 # should document the "Context:" of the function, e.g. whether the functions 181 # can be called form interrupts. Unlike other sections you can end it with an 182 # empty line. 183 # A non-void function should have a "Return:" section describing the return 184 # value(s). 185 # Example-sections should contain the string EXAMPLE so that they are marked 186 # appropriately in DocBook. 187 # 188 # Example: 189 # /** 190 # * user_function - function that can only be called in user context 191 # * @a: some argument 192 # * Context: !in_interrupt() 193 # * 194 # * Some description 195 # * Example: 196 # * user_function(22); 197 # */ 198 # ... 199 # 200 # 201 # All descriptive text is further processed, scanning for the following special 202 # patterns, which are highlighted appropriately. 203 # 204 # 'funcname()' - function 205 # '$ENVVAR' - environmental variable 206 # '&struct_name' - name of a structure (up to two words including 'struct') 207 # '&struct_name.member' - name of a structure member 208 # '@parameter' - name of a parameter 209 # '%CONST' - name of a constant. 210 # '``LITERAL``' - literal string without any spaces on it. 211 212 ## init lots of data 213 214 my $errors = 0; 215 my $warnings = 0; 216 my $anon_struct_union = 0; 217 218 # match expressions used to find embedded type information 219 my $type_constant = '\b``([^\`]+)``\b'; 220 my $type_constant2 = '\%([-_\w]+)'; 221 my $type_func = '(\w+)\(\)'; 222 my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)'; 223 my $type_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)'; 224 my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params 225 my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params 226 my $type_env = '(\$\w+)'; 227 my $type_enum = '\&(enum\s*([_\w]+))'; 228 my $type_struct = '\&(struct\s*([_\w]+))'; 229 my $type_typedef = '\&(typedef\s*([_\w]+))'; 230 my $type_union = '\&(union\s*([_\w]+))'; 231 my $type_member = '\&([_\w]+)(\.|->)([_\w]+)'; 232 my $type_fallback = '\&([_\w]+)'; 233 my $type_member_func = $type_member . '\(\)'; 234 235 # Output conversion substitutions. 236 # One for each output format 237 238 # these are pretty rough 239 my @highlights_man = ( 240 [$type_constant, "\$1"], 241 [$type_constant2, "\$1"], 242 [$type_func, "\\\\fB\$1\\\\fP"], 243 [$type_enum, "\\\\fI\$1\\\\fP"], 244 [$type_struct, "\\\\fI\$1\\\\fP"], 245 [$type_typedef, "\\\\fI\$1\\\\fP"], 246 [$type_union, "\\\\fI\$1\\\\fP"], 247 [$type_param, "\\\\fI\$1\\\\fP"], 248 [$type_param_ref, "\\\\fI\$1\$2\\\\fP"], 249 [$type_member, "\\\\fI\$1\$2\$3\\\\fP"], 250 [$type_fallback, "\\\\fI\$1\\\\fP"] 251 ); 252 my $blankline_man = ""; 253 254 # rst-mode 255 my @highlights_rst = ( 256 [$type_constant, "``\$1``"], 257 [$type_constant2, "``\$1``"], 258 # Note: need to escape () to avoid func matching later 259 [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"], 260 [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"], 261 [$type_fp_param, "**\$1\\\\(\\\\)**"], 262 [$type_fp_param2, "**\$1\\\\(\\\\)**"], 263 [$type_func, "\$1()"], 264 [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"], 265 [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"], 266 [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"], 267 [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"], 268 # in rst this can refer to any type 269 [$type_fallback, "\\:c\\:type\\:`\$1`"], 270 [$type_param_ref, "**\$1\$2**"] 271 ); 272 my $blankline_rst = "\n"; 273 274 # read arguments 275 if ($#ARGV == -1) { 276 usage(); 277 } 278 279 my $kernelversion; 280 my ($sphinx_major, $sphinx_minor, $sphinx_patch); 281 282 my $dohighlight = ""; 283 284 my $verbose = 0; 285 my $Werror = 0; 286 my $output_mode = "rst"; 287 my $output_preformatted = 0; 288 my $no_doc_sections = 0; 289 my $enable_lineno = 0; 290 my @highlights = @highlights_rst; 291 my $blankline = $blankline_rst; 292 my $modulename = "Kernel API"; 293 294 use constant { 295 OUTPUT_ALL => 0, # output all symbols and doc sections 296 OUTPUT_INCLUDE => 1, # output only specified symbols 297 OUTPUT_EXPORTED => 2, # output exported symbols 298 OUTPUT_INTERNAL => 3, # output non-exported symbols 299 }; 300 my $output_selection = OUTPUT_ALL; 301 my $show_not_found = 0; # No longer used 302 303 my @export_file_list; 304 305 my @build_time; 306 if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) && 307 (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') { 308 @build_time = gmtime($seconds); 309 } else { 310 @build_time = localtime; 311 } 312 313 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June', 314 'July', 'August', 'September', 'October', 315 'November', 'December')[$build_time[4]] . 316 " " . ($build_time[5]+1900); 317 318 # Essentially these are globals. 319 # They probably want to be tidied up, made more localised or something. 320 # CAVEAT EMPTOR! Some of the others I localised may not want to be, which 321 # could cause "use of undefined value" or other bugs. 322 my ($function, %function_table, %parametertypes, $declaration_purpose); 323 my %nosymbol_table = (); 324 my $declaration_start_line; 325 my ($type, $declaration_name, $return_type); 326 my ($newsection, $newcontents, $prototype, $brcount, %source_map); 327 328 if (defined($ENV{'KBUILD_VERBOSE'})) { 329 $verbose = "$ENV{'KBUILD_VERBOSE'}"; 330 } 331 332 if (defined($ENV{'KDOC_WERROR'})) { 333 $Werror = "$ENV{'KDOC_WERROR'}"; 334 } 335 336 if (defined($ENV{'KCFLAGS'})) { 337 my $kcflags = "$ENV{'KCFLAGS'}"; 338 339 if ($kcflags =~ /Werror/) { 340 $Werror = 1; 341 } 342 } 343 344 # Generated docbook code is inserted in a template at a point where 345 # docbook v3.1 requires a non-zero sequence of RefEntry's; see: 346 # https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html 347 # We keep track of number of generated entries and generate a dummy 348 # if needs be to ensure the expanded template can be postprocessed 349 # into html. 350 my $section_counter = 0; 351 352 my $lineprefix=""; 353 354 # Parser states 355 use constant { 356 STATE_NORMAL => 0, # normal code 357 STATE_NAME => 1, # looking for function name 358 STATE_BODY_MAYBE => 2, # body - or maybe more description 359 STATE_BODY => 3, # the body of the comment 360 STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line 361 STATE_PROTO => 5, # scanning prototype 362 STATE_DOCBLOCK => 6, # documentation block 363 STATE_INLINE => 7, # gathering doc outside main block 364 }; 365 my $state; 366 my $in_doc_sect; 367 my $leading_space; 368 369 # Inline documentation state 370 use constant { 371 STATE_INLINE_NA => 0, # not applicable ($state != STATE_INLINE) 372 STATE_INLINE_NAME => 1, # looking for member name (@foo:) 373 STATE_INLINE_TEXT => 2, # looking for member documentation 374 STATE_INLINE_END => 3, # done 375 STATE_INLINE_ERROR => 4, # error - Comment without header was found. 376 # Spit a warning as it's not 377 # proper kernel-doc and ignore the rest. 378 }; 379 my $inline_doc_state; 380 381 #declaration types: can be 382 # 'function', 'struct', 'union', 'enum', 'typedef' 383 my $decl_type; 384 385 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start. 386 my $doc_end = '\*/'; 387 my $doc_com = '\s*\*\s*'; 388 my $doc_com_body = '\s*\* ?'; 389 my $doc_decl = $doc_com . '(\w+)'; 390 # @params and a strictly limited set of supported section names 391 my $doc_sect = $doc_com . 392 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)'; 393 my $doc_content = $doc_com_body . '(.*)'; 394 my $doc_block = $doc_com . 'DOC:\s*(.*)?'; 395 my $doc_inline_start = '^\s*/\*\*\s*$'; 396 my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)'; 397 my $doc_inline_end = '^\s*\*/\s*$'; 398 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$'; 399 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;'; 400 401 my %parameterdescs; 402 my %parameterdesc_start_lines; 403 my @parameterlist; 404 my %sections; 405 my @sectionlist; 406 my %section_start_lines; 407 my $sectcheck; 408 my $struct_actual; 409 410 my $contents = ""; 411 my $new_start_line = 0; 412 413 # the canonical section names. see also $doc_sect above. 414 my $section_default = "Description"; # default section 415 my $section_intro = "Introduction"; 416 my $section = $section_default; 417 my $section_context = "Context"; 418 my $section_return = "Return"; 419 420 my $undescribed = "-- undescribed --"; 421 422 reset_state(); 423 424 while ($ARGV[0] =~ m/^--?(.*)/) { 425 my $cmd = $1; 426 shift @ARGV; 427 if ($cmd eq "man") { 428 $output_mode = "man"; 429 @highlights = @highlights_man; 430 $blankline = $blankline_man; 431 } elsif ($cmd eq "rst") { 432 $output_mode = "rst"; 433 @highlights = @highlights_rst; 434 $blankline = $blankline_rst; 435 } elsif ($cmd eq "none") { 436 $output_mode = "none"; 437 } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document 438 $modulename = shift @ARGV; 439 } elsif ($cmd eq "function") { # to only output specific functions 440 $output_selection = OUTPUT_INCLUDE; 441 $function = shift @ARGV; 442 $function_table{$function} = 1; 443 } elsif ($cmd eq "nosymbol") { # Exclude specific symbols 444 my $symbol = shift @ARGV; 445 $nosymbol_table{$symbol} = 1; 446 } elsif ($cmd eq "export") { # only exported symbols 447 $output_selection = OUTPUT_EXPORTED; 448 %function_table = (); 449 } elsif ($cmd eq "internal") { # only non-exported symbols 450 $output_selection = OUTPUT_INTERNAL; 451 %function_table = (); 452 } elsif ($cmd eq "export-file") { 453 my $file = shift @ARGV; 454 push(@export_file_list, $file); 455 } elsif ($cmd eq "v") { 456 $verbose = 1; 457 } elsif ($cmd eq "Werror") { 458 $Werror = 1; 459 } elsif (($cmd eq "h") || ($cmd eq "help")) { 460 usage(); 461 } elsif ($cmd eq 'no-doc-sections') { 462 $no_doc_sections = 1; 463 } elsif ($cmd eq 'enable-lineno') { 464 $enable_lineno = 1; 465 } elsif ($cmd eq 'show-not-found') { 466 $show_not_found = 1; # A no-op but don't fail 467 } elsif ($cmd eq "sphinx-version") { 468 my $ver_string = shift @ARGV; 469 if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) { 470 $sphinx_major = $1; 471 if (defined($2)) { 472 $sphinx_minor = substr($2,1); 473 } else { 474 $sphinx_minor = 0; 475 } 476 if (defined($3)) { 477 $sphinx_patch = substr($3,1) 478 } else { 479 $sphinx_patch = 0; 480 } 481 } else { 482 die "Sphinx version should either major.minor or major.minor.patch format\n"; 483 } 484 } else { 485 # Unknown argument 486 usage(); 487 } 488 } 489 490 # continue execution near EOF; 491 492 # The C domain dialect changed on Sphinx 3. So, we need to check the 493 # version in order to produce the right tags. 494 sub findprog($) 495 { 496 foreach(split(/:/, $ENV{PATH})) { 497 return "$_/$_[0]" if(-x "$_/$_[0]"); 498 } 499 } 500 501 sub get_sphinx_version() 502 { 503 my $ver; 504 505 my $cmd = "sphinx-build"; 506 if (!findprog($cmd)) { 507 my $cmd = "sphinx-build3"; 508 if (!findprog($cmd)) { 509 $sphinx_major = 1; 510 $sphinx_minor = 2; 511 $sphinx_patch = 0; 512 printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n", 513 $sphinx_major, $sphinx_minor, $sphinx_patch; 514 return; 515 } 516 } 517 518 open IN, "$cmd --version 2>&1 |"; 519 while (<IN>) { 520 if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) { 521 $sphinx_major = $1; 522 $sphinx_minor = $2; 523 $sphinx_patch = $3; 524 last; 525 } 526 # Sphinx 1.2.x uses a different format 527 if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) { 528 $sphinx_major = $1; 529 $sphinx_minor = $2; 530 $sphinx_patch = $3; 531 last; 532 } 533 } 534 close IN; 535 } 536 537 # get kernel version from env 538 sub get_kernel_version() { 539 my $version = 'unknown kernel version'; 540 541 if (defined($ENV{'KERNELVERSION'})) { 542 $version = $ENV{'KERNELVERSION'}; 543 } 544 return $version; 545 } 546 547 # 548 sub print_lineno { 549 my $lineno = shift; 550 if ($enable_lineno && defined($lineno)) { 551 print "#define LINENO " . $lineno . "\n"; 552 } 553 } 554 ## 555 # dumps section contents to arrays/hashes intended for that purpose. 556 # 557 sub dump_section { 558 my $file = shift; 559 my $name = shift; 560 my $contents = join "\n", @_; 561 562 if ($name =~ m/$type_param/) { 563 $name = $1; 564 $parameterdescs{$name} = $contents; 565 $sectcheck = $sectcheck . $name . " "; 566 $parameterdesc_start_lines{$name} = $new_start_line; 567 $new_start_line = 0; 568 } elsif ($name eq "@\.\.\.") { 569 $name = "..."; 570 $parameterdescs{$name} = $contents; 571 $sectcheck = $sectcheck . $name . " "; 572 $parameterdesc_start_lines{$name} = $new_start_line; 573 $new_start_line = 0; 574 } else { 575 if (defined($sections{$name}) && ($sections{$name} ne "")) { 576 # Only warn on user specified duplicate section names. 577 if ($name ne $section_default) { 578 print STDERR "${file}:$.: warning: duplicate section name '$name'\n"; 579 ++$warnings; 580 } 581 $sections{$name} .= $contents; 582 } else { 583 $sections{$name} = $contents; 584 push @sectionlist, $name; 585 $section_start_lines{$name} = $new_start_line; 586 $new_start_line = 0; 587 } 588 } 589 } 590 591 ## 592 # dump DOC: section after checking that it should go out 593 # 594 sub dump_doc_section { 595 my $file = shift; 596 my $name = shift; 597 my $contents = join "\n", @_; 598 599 if ($no_doc_sections) { 600 return; 601 } 602 603 return if (defined($nosymbol_table{$name})); 604 605 if (($output_selection == OUTPUT_ALL) || 606 (($output_selection == OUTPUT_INCLUDE) && 607 defined($function_table{$name}))) 608 { 609 dump_section($file, $name, $contents); 610 output_blockhead({'sectionlist' => \@sectionlist, 611 'sections' => \%sections, 612 'module' => $modulename, 613 'content-only' => ($output_selection != OUTPUT_ALL), }); 614 } 615 } 616 617 ## 618 # output function 619 # 620 # parameterdescs, a hash. 621 # function => "function name" 622 # parameterlist => @list of parameters 623 # parameterdescs => %parameter descriptions 624 # sectionlist => @list of sections 625 # sections => %section descriptions 626 # 627 628 sub output_highlight { 629 my $contents = join "\n",@_; 630 my $line; 631 632 # DEBUG 633 # if (!defined $contents) { 634 # use Carp; 635 # confess "output_highlight got called with no args?\n"; 636 # } 637 638 # print STDERR "contents b4:$contents\n"; 639 eval $dohighlight; 640 die $@ if $@; 641 # print STDERR "contents af:$contents\n"; 642 643 foreach $line (split "\n", $contents) { 644 if (! $output_preformatted) { 645 $line =~ s/^\s*//; 646 } 647 if ($line eq ""){ 648 if (! $output_preformatted) { 649 print $lineprefix, $blankline; 650 } 651 } else { 652 if ($output_mode eq "man" && substr($line, 0, 1) eq ".") { 653 print "\\&$line"; 654 } else { 655 print $lineprefix, $line; 656 } 657 } 658 print "\n"; 659 } 660 } 661 662 ## 663 # output function in man 664 sub output_function_man(%) { 665 my %args = %{$_[0]}; 666 my ($parameter, $section); 667 my $count; 668 669 print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n"; 670 671 print ".SH NAME\n"; 672 print $args{'function'} . " \\- " . $args{'purpose'} . "\n"; 673 674 print ".SH SYNOPSIS\n"; 675 if ($args{'functiontype'} ne "") { 676 print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n"; 677 } else { 678 print ".B \"" . $args{'function'} . "\n"; 679 } 680 $count = 0; 681 my $parenth = "("; 682 my $post = ","; 683 foreach my $parameter (@{$args{'parameterlist'}}) { 684 if ($count == $#{$args{'parameterlist'}}) { 685 $post = ");"; 686 } 687 $type = $args{'parametertypes'}{$parameter}; 688 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) { 689 # pointer-to-function 690 print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n"; 691 } else { 692 $type =~ s/([^\*])$/$1 /; 693 print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n"; 694 } 695 $count++; 696 $parenth = ""; 697 } 698 699 print ".SH ARGUMENTS\n"; 700 foreach $parameter (@{$args{'parameterlist'}}) { 701 my $parameter_name = $parameter; 702 $parameter_name =~ s/\[.*//; 703 704 print ".IP \"" . $parameter . "\" 12\n"; 705 output_highlight($args{'parameterdescs'}{$parameter_name}); 706 } 707 foreach $section (@{$args{'sectionlist'}}) { 708 print ".SH \"", uc $section, "\"\n"; 709 output_highlight($args{'sections'}{$section}); 710 } 711 } 712 713 ## 714 # output enum in man 715 sub output_enum_man(%) { 716 my %args = %{$_[0]}; 717 my ($parameter, $section); 718 my $count; 719 720 print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n"; 721 722 print ".SH NAME\n"; 723 print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n"; 724 725 print ".SH SYNOPSIS\n"; 726 print "enum " . $args{'enum'} . " {\n"; 727 $count = 0; 728 foreach my $parameter (@{$args{'parameterlist'}}) { 729 print ".br\n.BI \" $parameter\"\n"; 730 if ($count == $#{$args{'parameterlist'}}) { 731 print "\n};\n"; 732 last; 733 } 734 else { 735 print ", \n.br\n"; 736 } 737 $count++; 738 } 739 740 print ".SH Constants\n"; 741 foreach $parameter (@{$args{'parameterlist'}}) { 742 my $parameter_name = $parameter; 743 $parameter_name =~ s/\[.*//; 744 745 print ".IP \"" . $parameter . "\" 12\n"; 746 output_highlight($args{'parameterdescs'}{$parameter_name}); 747 } 748 foreach $section (@{$args{'sectionlist'}}) { 749 print ".SH \"$section\"\n"; 750 output_highlight($args{'sections'}{$section}); 751 } 752 } 753 754 ## 755 # output struct in man 756 sub output_struct_man(%) { 757 my %args = %{$_[0]}; 758 my ($parameter, $section); 759 760 print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n"; 761 762 print ".SH NAME\n"; 763 print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n"; 764 765 my $declaration = $args{'definition'}; 766 $declaration =~ s/\t/ /g; 767 $declaration =~ s/\n/"\n.br\n.BI \"/g; 768 print ".SH SYNOPSIS\n"; 769 print $args{'type'} . " " . $args{'struct'} . " {\n.br\n"; 770 print ".BI \"$declaration\n};\n.br\n\n"; 771 772 print ".SH Members\n"; 773 foreach $parameter (@{$args{'parameterlist'}}) { 774 ($parameter =~ /^#/) && next; 775 776 my $parameter_name = $parameter; 777 $parameter_name =~ s/\[.*//; 778 779 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next; 780 print ".IP \"" . $parameter . "\" 12\n"; 781 output_highlight($args{'parameterdescs'}{$parameter_name}); 782 } 783 foreach $section (@{$args{'sectionlist'}}) { 784 print ".SH \"$section\"\n"; 785 output_highlight($args{'sections'}{$section}); 786 } 787 } 788 789 ## 790 # output typedef in man 791 sub output_typedef_man(%) { 792 my %args = %{$_[0]}; 793 my ($parameter, $section); 794 795 print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n"; 796 797 print ".SH NAME\n"; 798 print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n"; 799 800 foreach $section (@{$args{'sectionlist'}}) { 801 print ".SH \"$section\"\n"; 802 output_highlight($args{'sections'}{$section}); 803 } 804 } 805 806 sub output_blockhead_man(%) { 807 my %args = %{$_[0]}; 808 my ($parameter, $section); 809 my $count; 810 811 print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n"; 812 813 foreach $section (@{$args{'sectionlist'}}) { 814 print ".SH \"$section\"\n"; 815 output_highlight($args{'sections'}{$section}); 816 } 817 } 818 819 ## 820 # output in restructured text 821 # 822 823 # 824 # This could use some work; it's used to output the DOC: sections, and 825 # starts by putting out the name of the doc section itself, but that tends 826 # to duplicate a header already in the template file. 827 # 828 sub output_blockhead_rst(%) { 829 my %args = %{$_[0]}; 830 my ($parameter, $section); 831 832 foreach $section (@{$args{'sectionlist'}}) { 833 next if (defined($nosymbol_table{$section})); 834 835 if ($output_selection != OUTPUT_INCLUDE) { 836 print "**$section**\n\n"; 837 } 838 print_lineno($section_start_lines{$section}); 839 output_highlight_rst($args{'sections'}{$section}); 840 print "\n"; 841 } 842 } 843 844 # 845 # Apply the RST highlights to a sub-block of text. 846 # 847 sub highlight_block($) { 848 # The dohighlight kludge requires the text be called $contents 849 my $contents = shift; 850 eval $dohighlight; 851 die $@ if $@; 852 return $contents; 853 } 854 855 # 856 # Regexes used only here. 857 # 858 my $sphinx_literal = '^[^.].*::$'; 859 my $sphinx_cblock = '^\.\.\ +code-block::'; 860 861 sub output_highlight_rst { 862 my $input = join "\n",@_; 863 my $output = ""; 864 my $line; 865 my $in_literal = 0; 866 my $litprefix; 867 my $block = ""; 868 869 foreach $line (split "\n",$input) { 870 # 871 # If we're in a literal block, see if we should drop out 872 # of it. Otherwise pass the line straight through unmunged. 873 # 874 if ($in_literal) { 875 if (! ($line =~ /^\s*$/)) { 876 # 877 # If this is the first non-blank line in a literal 878 # block we need to figure out what the proper indent is. 879 # 880 if ($litprefix eq "") { 881 $line =~ /^(\s*)/; 882 $litprefix = '^' . $1; 883 $output .= $line . "\n"; 884 } elsif (! ($line =~ /$litprefix/)) { 885 $in_literal = 0; 886 } else { 887 $output .= $line . "\n"; 888 } 889 } else { 890 $output .= $line . "\n"; 891 } 892 } 893 # 894 # Not in a literal block (or just dropped out) 895 # 896 if (! $in_literal) { 897 $block .= $line . "\n"; 898 if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) { 899 $in_literal = 1; 900 $litprefix = ""; 901 $output .= highlight_block($block); 902 $block = "" 903 } 904 } 905 } 906 907 if ($block) { 908 $output .= highlight_block($block); 909 } 910 foreach $line (split "\n", $output) { 911 print $lineprefix . $line . "\n"; 912 } 913 } 914 915 sub output_function_rst(%) { 916 my %args = %{$_[0]}; 917 my ($parameter, $section); 918 my $oldprefix = $lineprefix; 919 my $start = ""; 920 my $is_macro = 0; 921 922 if ($sphinx_major < 3) { 923 if ($args{'typedef'}) { 924 print ".. c:type:: ". $args{'function'} . "\n\n"; 925 print_lineno($declaration_start_line); 926 print " **Typedef**: "; 927 $lineprefix = ""; 928 output_highlight_rst($args{'purpose'}); 929 $start = "\n\n**Syntax**\n\n ``"; 930 $is_macro = 1; 931 } else { 932 print ".. c:function:: "; 933 } 934 } else { 935 if ($args{'typedef'} || $args{'functiontype'} eq "") { 936 $is_macro = 1; 937 print ".. c:macro:: ". $args{'function'} . "\n\n"; 938 } else { 939 print ".. c:function:: "; 940 } 941 942 if ($args{'typedef'}) { 943 print_lineno($declaration_start_line); 944 print " **Typedef**: "; 945 $lineprefix = ""; 946 output_highlight_rst($args{'purpose'}); 947 $start = "\n\n**Syntax**\n\n ``"; 948 } else { 949 print "``" if ($is_macro); 950 } 951 } 952 if ($args{'functiontype'} ne "") { 953 $start .= $args{'functiontype'} . " " . $args{'function'} . " ("; 954 } else { 955 $start .= $args{'function'} . " ("; 956 } 957 print $start; 958 959 my $count = 0; 960 foreach my $parameter (@{$args{'parameterlist'}}) { 961 if ($count ne 0) { 962 print ", "; 963 } 964 $count++; 965 $type = $args{'parametertypes'}{$parameter}; 966 967 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) { 968 # pointer-to-function 969 print $1 . $parameter . ") (" . $2 . ")"; 970 } else { 971 print $type; 972 } 973 } 974 if ($is_macro) { 975 print ")``\n\n"; 976 } else { 977 print ")\n\n"; 978 } 979 if (!$args{'typedef'}) { 980 print_lineno($declaration_start_line); 981 $lineprefix = " "; 982 output_highlight_rst($args{'purpose'}); 983 print "\n"; 984 } 985 986 print "**Parameters**\n\n"; 987 $lineprefix = " "; 988 foreach $parameter (@{$args{'parameterlist'}}) { 989 my $parameter_name = $parameter; 990 $parameter_name =~ s/\[.*//; 991 $type = $args{'parametertypes'}{$parameter}; 992 993 if ($type ne "") { 994 print "``$type``\n"; 995 } else { 996 print "``$parameter``\n"; 997 } 998 999 print_lineno($parameterdesc_start_lines{$parameter_name}); 1000 1001 if (defined($args{'parameterdescs'}{$parameter_name}) && 1002 $args{'parameterdescs'}{$parameter_name} ne $undescribed) { 1003 output_highlight_rst($args{'parameterdescs'}{$parameter_name}); 1004 } else { 1005 print " *undescribed*\n"; 1006 } 1007 print "\n"; 1008 } 1009 1010 $lineprefix = $oldprefix; 1011 output_section_rst(@_); 1012 } 1013 1014 sub output_section_rst(%) { 1015 my %args = %{$_[0]}; 1016 my $section; 1017 my $oldprefix = $lineprefix; 1018 $lineprefix = ""; 1019 1020 foreach $section (@{$args{'sectionlist'}}) { 1021 print "**$section**\n\n"; 1022 print_lineno($section_start_lines{$section}); 1023 output_highlight_rst($args{'sections'}{$section}); 1024 print "\n"; 1025 } 1026 print "\n"; 1027 $lineprefix = $oldprefix; 1028 } 1029 1030 sub output_enum_rst(%) { 1031 my %args = %{$_[0]}; 1032 my ($parameter); 1033 my $oldprefix = $lineprefix; 1034 my $count; 1035 1036 if ($sphinx_major < 3) { 1037 my $name = "enum " . $args{'enum'}; 1038 print "\n\n.. c:type:: " . $name . "\n\n"; 1039 } else { 1040 my $name = $args{'enum'}; 1041 print "\n\n.. c:enum:: " . $name . "\n\n"; 1042 } 1043 print_lineno($declaration_start_line); 1044 $lineprefix = " "; 1045 output_highlight_rst($args{'purpose'}); 1046 print "\n"; 1047 1048 print "**Constants**\n\n"; 1049 $lineprefix = " "; 1050 foreach $parameter (@{$args{'parameterlist'}}) { 1051 print "``$parameter``\n"; 1052 if ($args{'parameterdescs'}{$parameter} ne $undescribed) { 1053 output_highlight_rst($args{'parameterdescs'}{$parameter}); 1054 } else { 1055 print " *undescribed*\n"; 1056 } 1057 print "\n"; 1058 } 1059 1060 $lineprefix = $oldprefix; 1061 output_section_rst(@_); 1062 } 1063 1064 sub output_typedef_rst(%) { 1065 my %args = %{$_[0]}; 1066 my ($parameter); 1067 my $oldprefix = $lineprefix; 1068 my $name; 1069 1070 if ($sphinx_major < 3) { 1071 $name = "typedef " . $args{'typedef'}; 1072 } else { 1073 $name = $args{'typedef'}; 1074 } 1075 print "\n\n.. c:type:: " . $name . "\n\n"; 1076 print_lineno($declaration_start_line); 1077 $lineprefix = " "; 1078 output_highlight_rst($args{'purpose'}); 1079 print "\n"; 1080 1081 $lineprefix = $oldprefix; 1082 output_section_rst(@_); 1083 } 1084 1085 sub output_struct_rst(%) { 1086 my %args = %{$_[0]}; 1087 my ($parameter); 1088 my $oldprefix = $lineprefix; 1089 1090 if ($sphinx_major < 3) { 1091 my $name = $args{'type'} . " " . $args{'struct'}; 1092 print "\n\n.. c:type:: " . $name . "\n\n"; 1093 } else { 1094 my $name = $args{'struct'}; 1095 if ($args{'type'} eq 'union') { 1096 print "\n\n.. c:union:: " . $name . "\n\n"; 1097 } else { 1098 print "\n\n.. c:struct:: " . $name . "\n\n"; 1099 } 1100 } 1101 print_lineno($declaration_start_line); 1102 $lineprefix = " "; 1103 output_highlight_rst($args{'purpose'}); 1104 print "\n"; 1105 1106 print "**Definition**\n\n"; 1107 print "::\n\n"; 1108 my $declaration = $args{'definition'}; 1109 $declaration =~ s/\t/ /g; 1110 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n"; 1111 1112 print "**Members**\n\n"; 1113 $lineprefix = " "; 1114 foreach $parameter (@{$args{'parameterlist'}}) { 1115 ($parameter =~ /^#/) && next; 1116 1117 my $parameter_name = $parameter; 1118 $parameter_name =~ s/\[.*//; 1119 1120 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next; 1121 $type = $args{'parametertypes'}{$parameter}; 1122 print_lineno($parameterdesc_start_lines{$parameter_name}); 1123 print "``" . $parameter . "``\n"; 1124 output_highlight_rst($args{'parameterdescs'}{$parameter_name}); 1125 print "\n"; 1126 } 1127 print "\n"; 1128 1129 $lineprefix = $oldprefix; 1130 output_section_rst(@_); 1131 } 1132 1133 ## none mode output functions 1134 1135 sub output_function_none(%) { 1136 } 1137 1138 sub output_enum_none(%) { 1139 } 1140 1141 sub output_typedef_none(%) { 1142 } 1143 1144 sub output_struct_none(%) { 1145 } 1146 1147 sub output_blockhead_none(%) { 1148 } 1149 1150 ## 1151 # generic output function for all types (function, struct/union, typedef, enum); 1152 # calls the generated, variable output_ function name based on 1153 # functype and output_mode 1154 sub output_declaration { 1155 no strict 'refs'; 1156 my $name = shift; 1157 my $functype = shift; 1158 my $func = "output_${functype}_$output_mode"; 1159 1160 return if (defined($nosymbol_table{$name})); 1161 1162 if (($output_selection == OUTPUT_ALL) || 1163 (($output_selection == OUTPUT_INCLUDE || 1164 $output_selection == OUTPUT_EXPORTED) && 1165 defined($function_table{$name})) || 1166 ($output_selection == OUTPUT_INTERNAL && 1167 !($functype eq "function" && defined($function_table{$name})))) 1168 { 1169 &$func(@_); 1170 $section_counter++; 1171 } 1172 } 1173 1174 ## 1175 # generic output function - calls the right one based on current output mode. 1176 sub output_blockhead { 1177 no strict 'refs'; 1178 my $func = "output_blockhead_" . $output_mode; 1179 &$func(@_); 1180 $section_counter++; 1181 } 1182 1183 ## 1184 # takes a declaration (struct, union, enum, typedef) and 1185 # invokes the right handler. NOT called for functions. 1186 sub dump_declaration($$) { 1187 no strict 'refs'; 1188 my ($prototype, $file) = @_; 1189 my $func = "dump_" . $decl_type; 1190 &$func(@_); 1191 } 1192 1193 sub dump_union($$) { 1194 dump_struct(@_); 1195 } 1196 1197 sub dump_struct($$) { 1198 my $x = shift; 1199 my $file = shift; 1200 1201 if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) { 1202 my $decl_type = $1; 1203 $declaration_name = $2; 1204 my $members = $3; 1205 1206 # ignore members marked private: 1207 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi; 1208 $members =~ s/\/\*\s*private:.*//gosi; 1209 # strip comments: 1210 $members =~ s/\/\*.*?\*\///gos; 1211 # strip attributes 1212 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi; 1213 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos; 1214 $members =~ s/\s*__packed\s*/ /gos; 1215 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos; 1216 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos; 1217 $members =~ s/\s*____cacheline_aligned/ /gos; 1218 1219 # replace DECLARE_BITMAP 1220 $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos; 1221 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos; 1222 # replace DECLARE_HASHTABLE 1223 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos; 1224 # replace DECLARE_KFIFO 1225 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos; 1226 # replace DECLARE_KFIFO_PTR 1227 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos; 1228 1229 my $declaration = $members; 1230 1231 # Split nested struct/union elements as newer ones 1232 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) { 1233 my $newmember; 1234 my $maintype = $1; 1235 my $ids = $4; 1236 my $content = $3; 1237 foreach my $id(split /,/, $ids) { 1238 $newmember .= "$maintype $id; "; 1239 1240 $id =~ s/[:\[].*//; 1241 $id =~ s/^\s*\**(\S+)\s*/$1/; 1242 foreach my $arg (split /;/, $content) { 1243 next if ($arg =~ m/^\s*$/); 1244 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) { 1245 # pointer-to-function 1246 my $type = $1; 1247 my $name = $2; 1248 my $extra = $3; 1249 next if (!$name); 1250 if ($id =~ m/^\s*$/) { 1251 # anonymous struct/union 1252 $newmember .= "$type$name$extra; "; 1253 } else { 1254 $newmember .= "$type$id.$name$extra; "; 1255 } 1256 } else { 1257 my $type; 1258 my $names; 1259 $arg =~ s/^\s+//; 1260 $arg =~ s/\s+$//; 1261 # Handle bitmaps 1262 $arg =~ s/:\s*\d+\s*//g; 1263 # Handle arrays 1264 $arg =~ s/\[.*\]//g; 1265 # The type may have multiple words, 1266 # and multiple IDs can be defined, like: 1267 # const struct foo, *bar, foobar 1268 # So, we remove spaces when parsing the 1269 # names, in order to match just names 1270 # and commas for the names 1271 $arg =~ s/\s*,\s*/,/g; 1272 if ($arg =~ m/(.*)\s+([\S+,]+)/) { 1273 $type = $1; 1274 $names = $2; 1275 } else { 1276 $newmember .= "$arg; "; 1277 next; 1278 } 1279 foreach my $name (split /,/, $names) { 1280 $name =~ s/^\s*\**(\S+)\s*/$1/; 1281 next if (($name =~ m/^\s*$/)); 1282 if ($id =~ m/^\s*$/) { 1283 # anonymous struct/union 1284 $newmember .= "$type $name; "; 1285 } else { 1286 $newmember .= "$type $id.$name; "; 1287 } 1288 } 1289 } 1290 } 1291 } 1292 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/; 1293 } 1294 1295 # Ignore other nested elements, like enums 1296 $members =~ s/(\{[^\{\}]*\})//g; 1297 1298 create_parameterlist($members, ';', $file, $declaration_name); 1299 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual); 1300 1301 # Adjust declaration for better display 1302 $declaration =~ s/([\{;])/$1\n/g; 1303 $declaration =~ s/\}\s+;/};/g; 1304 # Better handle inlined enums 1305 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/); 1306 1307 my @def_args = split /\n/, $declaration; 1308 my $level = 1; 1309 $declaration = ""; 1310 foreach my $clause (@def_args) { 1311 $clause =~ s/^\s+//; 1312 $clause =~ s/\s+$//; 1313 $clause =~ s/\s+/ /; 1314 next if (!$clause); 1315 $level-- if ($clause =~ m/(\})/ && $level > 1); 1316 if (!($clause =~ m/^\s*#/)) { 1317 $declaration .= "\t" x $level; 1318 } 1319 $declaration .= "\t" . $clause . "\n"; 1320 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/)); 1321 } 1322 output_declaration($declaration_name, 1323 'struct', 1324 {'struct' => $declaration_name, 1325 'module' => $modulename, 1326 'definition' => $declaration, 1327 'parameterlist' => \@parameterlist, 1328 'parameterdescs' => \%parameterdescs, 1329 'parametertypes' => \%parametertypes, 1330 'sectionlist' => \@sectionlist, 1331 'sections' => \%sections, 1332 'purpose' => $declaration_purpose, 1333 'type' => $decl_type 1334 }); 1335 } 1336 else { 1337 print STDERR "${file}:$.: error: Cannot parse struct or union!\n"; 1338 ++$errors; 1339 } 1340 } 1341 1342 1343 sub show_warnings($$) { 1344 my $functype = shift; 1345 my $name = shift; 1346 1347 return 0 if (defined($nosymbol_table{$name})); 1348 1349 return 1 if ($output_selection == OUTPUT_ALL); 1350 1351 if ($output_selection == OUTPUT_EXPORTED) { 1352 if (defined($function_table{$name})) { 1353 return 1; 1354 } else { 1355 return 0; 1356 } 1357 } 1358 if ($output_selection == OUTPUT_INTERNAL) { 1359 if (!($functype eq "function" && defined($function_table{$name}))) { 1360 return 1; 1361 } else { 1362 return 0; 1363 } 1364 } 1365 if ($output_selection == OUTPUT_INCLUDE) { 1366 if (defined($function_table{$name})) { 1367 return 1; 1368 } else { 1369 return 0; 1370 } 1371 } 1372 die("Please add the new output type at show_warnings()"); 1373 } 1374 1375 sub dump_enum($$) { 1376 my $x = shift; 1377 my $file = shift; 1378 my $members; 1379 1380 1381 $x =~ s@/\*.*?\*/@@gos; # strip comments. 1382 # strip #define macros inside enums 1383 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos; 1384 1385 if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) { 1386 $declaration_name = $2; 1387 $members = $1; 1388 } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) { 1389 $declaration_name = $1; 1390 $members = $2; 1391 } 1392 1393 if ($members) { 1394 my %_members; 1395 1396 $members =~ s/\s+$//; 1397 1398 foreach my $arg (split ',', $members) { 1399 $arg =~ s/^\s*(\w+).*/$1/; 1400 push @parameterlist, $arg; 1401 if (!$parameterdescs{$arg}) { 1402 $parameterdescs{$arg} = $undescribed; 1403 if (show_warnings("enum", $declaration_name)) { 1404 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n"; 1405 } 1406 } 1407 $_members{$arg} = 1; 1408 } 1409 1410 while (my ($k, $v) = each %parameterdescs) { 1411 if (!exists($_members{$k})) { 1412 if (show_warnings("enum", $declaration_name)) { 1413 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n"; 1414 } 1415 } 1416 } 1417 1418 output_declaration($declaration_name, 1419 'enum', 1420 {'enum' => $declaration_name, 1421 'module' => $modulename, 1422 'parameterlist' => \@parameterlist, 1423 'parameterdescs' => \%parameterdescs, 1424 'sectionlist' => \@sectionlist, 1425 'sections' => \%sections, 1426 'purpose' => $declaration_purpose 1427 }); 1428 } else { 1429 print STDERR "${file}:$.: error: Cannot parse enum!\n"; 1430 ++$errors; 1431 } 1432 } 1433 1434 my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x; 1435 my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x; 1436 my $typedef_args = qr { \s*\((.*)\); }x; 1437 1438 my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x; 1439 my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x; 1440 1441 sub dump_typedef($$) { 1442 my $x = shift; 1443 my $file = shift; 1444 1445 $x =~ s@/\*.*?\*/@@gos; # strip comments. 1446 1447 # Parse function typedef prototypes 1448 if ($x =~ $typedef1 || $x =~ $typedef2) { 1449 $return_type = $1; 1450 $declaration_name = $2; 1451 my $args = $3; 1452 $return_type =~ s/^\s+//; 1453 1454 create_parameterlist($args, ',', $file, $declaration_name); 1455 1456 output_declaration($declaration_name, 1457 'function', 1458 {'function' => $declaration_name, 1459 'typedef' => 1, 1460 'module' => $modulename, 1461 'functiontype' => $return_type, 1462 'parameterlist' => \@parameterlist, 1463 'parameterdescs' => \%parameterdescs, 1464 'parametertypes' => \%parametertypes, 1465 'sectionlist' => \@sectionlist, 1466 'sections' => \%sections, 1467 'purpose' => $declaration_purpose 1468 }); 1469 return; 1470 } 1471 1472 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) { 1473 $x =~ s/\(*.\)\s*;$/;/; 1474 $x =~ s/\[*.\]\s*;$/;/; 1475 } 1476 1477 if ($x =~ /typedef.*\s+(\w+)\s*;/) { 1478 $declaration_name = $1; 1479 1480 output_declaration($declaration_name, 1481 'typedef', 1482 {'typedef' => $declaration_name, 1483 'module' => $modulename, 1484 'sectionlist' => \@sectionlist, 1485 'sections' => \%sections, 1486 'purpose' => $declaration_purpose 1487 }); 1488 } 1489 else { 1490 print STDERR "${file}:$.: error: Cannot parse typedef!\n"; 1491 ++$errors; 1492 } 1493 } 1494 1495 sub save_struct_actual($) { 1496 my $actual = shift; 1497 1498 # strip all spaces from the actual param so that it looks like one string item 1499 $actual =~ s/\s*//g; 1500 $struct_actual = $struct_actual . $actual . " "; 1501 } 1502 1503 sub create_parameterlist($$$$) { 1504 my $args = shift; 1505 my $splitter = shift; 1506 my $file = shift; 1507 my $declaration_name = shift; 1508 my $type; 1509 my $param; 1510 1511 # temporarily replace commas inside function pointer definition 1512 while ($args =~ /(\([^\),]+),/) { 1513 $args =~ s/(\([^\),]+),/$1#/g; 1514 } 1515 1516 foreach my $arg (split($splitter, $args)) { 1517 # strip comments 1518 $arg =~ s/\/\*.*\*\///; 1519 # strip leading/trailing spaces 1520 $arg =~ s/^\s*//; 1521 $arg =~ s/\s*$//; 1522 $arg =~ s/\s+/ /; 1523 1524 if ($arg =~ /^#/) { 1525 # Treat preprocessor directive as a typeless variable just to fill 1526 # corresponding data structures "correctly". Catch it later in 1527 # output_* subs. 1528 push_parameter($arg, "", "", $file); 1529 } elsif ($arg =~ m/\(.+\)\s*\(/) { 1530 # pointer-to-function 1531 $arg =~ tr/#/,/; 1532 $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/; 1533 $param = $1; 1534 $type = $arg; 1535 $type =~ s/([^\(]+\(\*?)\s*$param/$1/; 1536 save_struct_actual($param); 1537 push_parameter($param, $type, $arg, $file, $declaration_name); 1538 } elsif ($arg) { 1539 $arg =~ s/\s*:\s*/:/g; 1540 $arg =~ s/\s*\[/\[/g; 1541 1542 my @args = split('\s*,\s*', $arg); 1543 if ($args[0] =~ m/\*/) { 1544 $args[0] =~ s/(\*+)\s*/ $1/; 1545 } 1546 1547 my @first_arg; 1548 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) { 1549 shift @args; 1550 push(@first_arg, split('\s+', $1)); 1551 push(@first_arg, $2); 1552 } else { 1553 @first_arg = split('\s+', shift @args); 1554 } 1555 1556 unshift(@args, pop @first_arg); 1557 $type = join " ", @first_arg; 1558 1559 foreach $param (@args) { 1560 if ($param =~ m/^(\*+)\s*(.*)/) { 1561 save_struct_actual($2); 1562 1563 push_parameter($2, "$type $1", $arg, $file, $declaration_name); 1564 } 1565 elsif ($param =~ m/(.*?):(\d+)/) { 1566 if ($type ne "") { # skip unnamed bit-fields 1567 save_struct_actual($1); 1568 push_parameter($1, "$type:$2", $arg, $file, $declaration_name) 1569 } 1570 } 1571 else { 1572 save_struct_actual($param); 1573 push_parameter($param, $type, $arg, $file, $declaration_name); 1574 } 1575 } 1576 } 1577 } 1578 } 1579 1580 sub push_parameter($$$$$) { 1581 my $param = shift; 1582 my $type = shift; 1583 my $org_arg = shift; 1584 my $file = shift; 1585 my $declaration_name = shift; 1586 1587 if (($anon_struct_union == 1) && ($type eq "") && 1588 ($param eq "}")) { 1589 return; # ignore the ending }; from anon. struct/union 1590 } 1591 1592 $anon_struct_union = 0; 1593 $param =~ s/[\[\)].*//; 1594 1595 if ($type eq "" && $param =~ /\.\.\.$/) 1596 { 1597 if (!$param =~ /\w\.\.\.$/) { 1598 # handles unnamed variable parameters 1599 $param = "..."; 1600 } 1601 elsif ($param =~ /\w\.\.\.$/) { 1602 # for named variable parameters of the form `x...`, remove the dots 1603 $param =~ s/\.\.\.$//; 1604 } 1605 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") { 1606 $parameterdescs{$param} = "variable arguments"; 1607 } 1608 } 1609 elsif ($type eq "" && ($param eq "" or $param eq "void")) 1610 { 1611 $param="void"; 1612 $parameterdescs{void} = "no arguments"; 1613 } 1614 elsif ($type eq "" && ($param eq "struct" or $param eq "union")) 1615 # handle unnamed (anonymous) union or struct: 1616 { 1617 $type = $param; 1618 $param = "{unnamed_" . $param . "}"; 1619 $parameterdescs{$param} = "anonymous\n"; 1620 $anon_struct_union = 1; 1621 } 1622 1623 # warn if parameter has no description 1624 # (but ignore ones starting with # as these are not parameters 1625 # but inline preprocessor statements); 1626 # Note: It will also ignore void params and unnamed structs/unions 1627 if (!defined $parameterdescs{$param} && $param !~ /^#/) { 1628 $parameterdescs{$param} = $undescribed; 1629 1630 if (show_warnings($type, $declaration_name) && $param !~ /\./) { 1631 print STDERR 1632 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n"; 1633 ++$warnings; 1634 } 1635 } 1636 1637 # strip spaces from $param so that it is one continuous string 1638 # on @parameterlist; 1639 # this fixes a problem where check_sections() cannot find 1640 # a parameter like "addr[6 + 2]" because it actually appears 1641 # as "addr[6", "+", "2]" on the parameter list; 1642 # but it's better to maintain the param string unchanged for output, 1643 # so just weaken the string compare in check_sections() to ignore 1644 # "[blah" in a parameter string; 1645 ###$param =~ s/\s*//g; 1646 push @parameterlist, $param; 1647 $org_arg =~ s/\s\s+/ /g; 1648 $parametertypes{$param} = $org_arg; 1649 } 1650 1651 sub check_sections($$$$$) { 1652 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_; 1653 my @sects = split ' ', $sectcheck; 1654 my @prms = split ' ', $prmscheck; 1655 my $err; 1656 my ($px, $sx); 1657 my $prm_clean; # strip trailing "[array size]" and/or beginning "*" 1658 1659 foreach $sx (0 .. $#sects) { 1660 $err = 1; 1661 foreach $px (0 .. $#prms) { 1662 $prm_clean = $prms[$px]; 1663 $prm_clean =~ s/\[.*\]//; 1664 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i; 1665 # ignore array size in a parameter string; 1666 # however, the original param string may contain 1667 # spaces, e.g.: addr[6 + 2] 1668 # and this appears in @prms as "addr[6" since the 1669 # parameter list is split at spaces; 1670 # hence just ignore "[..." for the sections check; 1671 $prm_clean =~ s/\[.*//; 1672 1673 ##$prm_clean =~ s/^\**//; 1674 if ($prm_clean eq $sects[$sx]) { 1675 $err = 0; 1676 last; 1677 } 1678 } 1679 if ($err) { 1680 if ($decl_type eq "function") { 1681 print STDERR "${file}:$.: warning: " . 1682 "Excess function parameter " . 1683 "'$sects[$sx]' " . 1684 "description in '$decl_name'\n"; 1685 ++$warnings; 1686 } 1687 } 1688 } 1689 } 1690 1691 ## 1692 # Checks the section describing the return value of a function. 1693 sub check_return_section { 1694 my $file = shift; 1695 my $declaration_name = shift; 1696 my $return_type = shift; 1697 1698 # Ignore an empty return type (It's a macro) 1699 # Ignore functions with a "void" return type. (But don't ignore "void *") 1700 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) { 1701 return; 1702 } 1703 1704 if (!defined($sections{$section_return}) || 1705 $sections{$section_return} eq "") { 1706 print STDERR "${file}:$.: warning: " . 1707 "No description found for return value of " . 1708 "'$declaration_name'\n"; 1709 ++$warnings; 1710 } 1711 } 1712 1713 ## 1714 # takes a function prototype and the name of the current file being 1715 # processed and spits out all the details stored in the global 1716 # arrays/hashes. 1717 sub dump_function($$) { 1718 my $prototype = shift; 1719 my $file = shift; 1720 my $noret = 0; 1721 1722 print_lineno($new_start_line); 1723 1724 $prototype =~ s/^static +//; 1725 $prototype =~ s/^extern +//; 1726 $prototype =~ s/^asmlinkage +//; 1727 $prototype =~ s/^inline +//; 1728 $prototype =~ s/^__inline__ +//; 1729 $prototype =~ s/^__inline +//; 1730 $prototype =~ s/^__always_inline +//; 1731 $prototype =~ s/^noinline +//; 1732 $prototype =~ s/__init +//; 1733 $prototype =~ s/__init_or_module +//; 1734 $prototype =~ s/__meminit +//; 1735 $prototype =~ s/__must_check +//; 1736 $prototype =~ s/__weak +//; 1737 $prototype =~ s/__sched +//; 1738 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//; 1739 my $define = $prototype =~ s/^#\s*define\s+//; #ak added 1740 $prototype =~ s/__attribute__\s*\(\( 1741 (?: 1742 [\w\s]++ # attribute name 1743 (?:\([^)]*+\))? # attribute arguments 1744 \s*+,? # optional comma at the end 1745 )+ 1746 \)\)\s+//x; 1747 1748 # Yes, this truly is vile. We are looking for: 1749 # 1. Return type (may be nothing if we're looking at a macro) 1750 # 2. Function name 1751 # 3. Function parameters. 1752 # 1753 # All the while we have to watch out for function pointer parameters 1754 # (which IIRC is what the two sections are for), C types (these 1755 # regexps don't even start to express all the possibilities), and 1756 # so on. 1757 # 1758 # If you mess with these regexps, it's a good idea to check that 1759 # the following functions' documentation still comes out right: 1760 # - parport_register_device (function pointer parameters) 1761 # - atomic_set (macro) 1762 # - pci_match_device, __copy_to_user (long return type) 1763 1764 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) { 1765 # This is an object-like macro, it has no return type and no parameter 1766 # list. 1767 # Function-like macros are not allowed to have spaces between 1768 # declaration_name and opening parenthesis (notice the \s+). 1769 $return_type = $1; 1770 $declaration_name = $2; 1771 $noret = 1; 1772 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1773 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1774 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1775 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1776 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1777 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1778 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1779 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1780 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1781 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1782 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1783 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1784 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1785 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1786 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1787 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1788 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) { 1789 $return_type = $1; 1790 $declaration_name = $2; 1791 my $args = $3; 1792 1793 create_parameterlist($args, ',', $file, $declaration_name); 1794 } else { 1795 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n"; 1796 return; 1797 } 1798 1799 my $prms = join " ", @parameterlist; 1800 check_sections($file, $declaration_name, "function", $sectcheck, $prms); 1801 1802 # This check emits a lot of warnings at the moment, because many 1803 # functions don't have a 'Return' doc section. So until the number 1804 # of warnings goes sufficiently down, the check is only performed in 1805 # verbose mode. 1806 # TODO: always perform the check. 1807 if ($verbose && !$noret) { 1808 check_return_section($file, $declaration_name, $return_type); 1809 } 1810 1811 # The function parser can be called with a typedef parameter. 1812 # Handle it. 1813 if ($return_type =~ /typedef/) { 1814 output_declaration($declaration_name, 1815 'function', 1816 {'function' => $declaration_name, 1817 'typedef' => 1, 1818 'module' => $modulename, 1819 'functiontype' => $return_type, 1820 'parameterlist' => \@parameterlist, 1821 'parameterdescs' => \%parameterdescs, 1822 'parametertypes' => \%parametertypes, 1823 'sectionlist' => \@sectionlist, 1824 'sections' => \%sections, 1825 'purpose' => $declaration_purpose 1826 }); 1827 } else { 1828 output_declaration($declaration_name, 1829 'function', 1830 {'function' => $declaration_name, 1831 'module' => $modulename, 1832 'functiontype' => $return_type, 1833 'parameterlist' => \@parameterlist, 1834 'parameterdescs' => \%parameterdescs, 1835 'parametertypes' => \%parametertypes, 1836 'sectionlist' => \@sectionlist, 1837 'sections' => \%sections, 1838 'purpose' => $declaration_purpose 1839 }); 1840 } 1841 } 1842 1843 sub reset_state { 1844 $function = ""; 1845 %parameterdescs = (); 1846 %parametertypes = (); 1847 @parameterlist = (); 1848 %sections = (); 1849 @sectionlist = (); 1850 $sectcheck = ""; 1851 $struct_actual = ""; 1852 $prototype = ""; 1853 1854 $state = STATE_NORMAL; 1855 $inline_doc_state = STATE_INLINE_NA; 1856 } 1857 1858 sub tracepoint_munge($) { 1859 my $file = shift; 1860 my $tracepointname = 0; 1861 my $tracepointargs = 0; 1862 1863 if ($prototype =~ m/TRACE_EVENT\((.*?),/) { 1864 $tracepointname = $1; 1865 } 1866 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) { 1867 $tracepointname = $1; 1868 } 1869 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) { 1870 $tracepointname = $2; 1871 } 1872 $tracepointname =~ s/^\s+//; #strip leading whitespace 1873 if ($prototype =~ m/TP_PROTO\((.*?)\)/) { 1874 $tracepointargs = $1; 1875 } 1876 if (($tracepointname eq 0) || ($tracepointargs eq 0)) { 1877 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n". 1878 "$prototype\n"; 1879 } else { 1880 $prototype = "static inline void trace_$tracepointname($tracepointargs)"; 1881 } 1882 } 1883 1884 sub syscall_munge() { 1885 my $void = 0; 1886 1887 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's 1888 ## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) { 1889 if ($prototype =~ m/SYSCALL_DEFINE0/) { 1890 $void = 1; 1891 ## $prototype = "long sys_$1(void)"; 1892 } 1893 1894 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name 1895 if ($prototype =~ m/long (sys_.*?),/) { 1896 $prototype =~ s/,/\(/; 1897 } elsif ($void) { 1898 $prototype =~ s/\)/\(void\)/; 1899 } 1900 1901 # now delete all of the odd-number commas in $prototype 1902 # so that arg types & arg names don't have a comma between them 1903 my $count = 0; 1904 my $len = length($prototype); 1905 if ($void) { 1906 $len = 0; # skip the for-loop 1907 } 1908 for (my $ix = 0; $ix < $len; $ix++) { 1909 if (substr($prototype, $ix, 1) eq ',') { 1910 $count++; 1911 if ($count % 2 == 1) { 1912 substr($prototype, $ix, 1) = ' '; 1913 } 1914 } 1915 } 1916 } 1917 1918 sub process_proto_function($$) { 1919 my $x = shift; 1920 my $file = shift; 1921 1922 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line 1923 1924 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) { 1925 # do nothing 1926 } 1927 elsif ($x =~ /([^\{]*)/) { 1928 $prototype .= $1; 1929 } 1930 1931 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) { 1932 $prototype =~ s@/\*.*?\*/@@gos; # strip comments. 1933 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's. 1934 $prototype =~ s@^\s+@@gos; # strip leading spaces 1935 1936 # Handle prototypes for function pointers like: 1937 # int (*pcs_config)(struct foo) 1938 $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos; 1939 1940 if ($prototype =~ /SYSCALL_DEFINE/) { 1941 syscall_munge(); 1942 } 1943 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ || 1944 $prototype =~ /DEFINE_SINGLE_EVENT/) 1945 { 1946 tracepoint_munge($file); 1947 } 1948 dump_function($prototype, $file); 1949 reset_state(); 1950 } 1951 } 1952 1953 sub process_proto_type($$) { 1954 my $x = shift; 1955 my $file = shift; 1956 1957 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's. 1958 $x =~ s@^\s+@@gos; # strip leading spaces 1959 $x =~ s@\s+$@@gos; # strip trailing spaces 1960 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line 1961 1962 if ($x =~ /^#/) { 1963 # To distinguish preprocessor directive from regular declaration later. 1964 $x .= ";"; 1965 } 1966 1967 while (1) { 1968 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) { 1969 if( length $prototype ) { 1970 $prototype .= " " 1971 } 1972 $prototype .= $1 . $2; 1973 ($2 eq '{') && $brcount++; 1974 ($2 eq '}') && $brcount--; 1975 if (($2 eq ';') && ($brcount == 0)) { 1976 dump_declaration($prototype, $file); 1977 reset_state(); 1978 last; 1979 } 1980 $x = $3; 1981 } else { 1982 $prototype .= $x; 1983 last; 1984 } 1985 } 1986 } 1987 1988 1989 sub map_filename($) { 1990 my $file; 1991 my ($orig_file) = @_; 1992 1993 if (defined($ENV{'SRCTREE'})) { 1994 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file; 1995 } else { 1996 $file = $orig_file; 1997 } 1998 1999 if (defined($source_map{$file})) { 2000 $file = $source_map{$file}; 2001 } 2002 2003 return $file; 2004 } 2005 2006 sub process_export_file($) { 2007 my ($orig_file) = @_; 2008 my $file = map_filename($orig_file); 2009 2010 if (!open(IN,"<$file")) { 2011 print STDERR "Error: Cannot open file $file\n"; 2012 ++$errors; 2013 return; 2014 } 2015 2016 while (<IN>) { 2017 if (/$export_symbol/) { 2018 next if (defined($nosymbol_table{$2})); 2019 $function_table{$2} = 1; 2020 } 2021 } 2022 2023 close(IN); 2024 } 2025 2026 # 2027 # Parsers for the various processing states. 2028 # 2029 # STATE_NORMAL: looking for the /** to begin everything. 2030 # 2031 sub process_normal() { 2032 if (/$doc_start/o) { 2033 $state = STATE_NAME; # next line is always the function name 2034 $in_doc_sect = 0; 2035 $declaration_start_line = $. + 1; 2036 } 2037 } 2038 2039 # 2040 # STATE_NAME: Looking for the "name - description" line 2041 # 2042 sub process_name($$) { 2043 my $file = shift; 2044 my $identifier; 2045 my $descr; 2046 2047 if (/$doc_block/o) { 2048 $state = STATE_DOCBLOCK; 2049 $contents = ""; 2050 $new_start_line = $.; 2051 2052 if ( $1 eq "" ) { 2053 $section = $section_intro; 2054 } else { 2055 $section = $1; 2056 } 2057 } 2058 elsif (/$doc_decl/o) { 2059 $identifier = $1; 2060 if (/\s*([\w\s]+?)(\(\))?\s*-/) { 2061 $identifier = $1; 2062 } 2063 2064 $state = STATE_BODY; 2065 # if there's no @param blocks need to set up default section 2066 # here 2067 $contents = ""; 2068 $section = $section_default; 2069 $new_start_line = $. + 1; 2070 if (/-(.*)/) { 2071 # strip leading/trailing/multiple spaces 2072 $descr= $1; 2073 $descr =~ s/^\s*//; 2074 $descr =~ s/\s*$//; 2075 $descr =~ s/\s+/ /g; 2076 $declaration_purpose = $descr; 2077 $state = STATE_BODY_MAYBE; 2078 } else { 2079 $declaration_purpose = ""; 2080 } 2081 2082 if (($declaration_purpose eq "") && $verbose) { 2083 print STDERR "${file}:$.: warning: missing initial short description on line:\n"; 2084 print STDERR $_; 2085 ++$warnings; 2086 } 2087 2088 if ($identifier =~ m/^struct\b/) { 2089 $decl_type = 'struct'; 2090 } elsif ($identifier =~ m/^union\b/) { 2091 $decl_type = 'union'; 2092 } elsif ($identifier =~ m/^enum\b/) { 2093 $decl_type = 'enum'; 2094 } elsif ($identifier =~ m/^typedef\b/) { 2095 $decl_type = 'typedef'; 2096 } else { 2097 $decl_type = 'function'; 2098 } 2099 2100 if ($verbose) { 2101 print STDERR "${file}:$.: info: Scanning doc for $identifier\n"; 2102 } 2103 } else { 2104 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.", 2105 " - I thought it was a doc line\n"; 2106 ++$warnings; 2107 $state = STATE_NORMAL; 2108 } 2109 } 2110 2111 2112 # 2113 # STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment. 2114 # 2115 sub process_body($$) { 2116 my $file = shift; 2117 2118 # Until all named variable macro parameters are 2119 # documented using the bare name (`x`) rather than with 2120 # dots (`x...`), strip the dots: 2121 if ($section =~ /\w\.\.\.$/) { 2122 $section =~ s/\.\.\.$//; 2123 2124 if ($verbose) { 2125 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n"; 2126 ++$warnings; 2127 } 2128 } 2129 2130 if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) { 2131 dump_section($file, $section, $contents); 2132 $section = $section_default; 2133 $new_start_line = $.; 2134 $contents = ""; 2135 } 2136 2137 if (/$doc_sect/i) { # case insensitive for supported section names 2138 $newsection = $1; 2139 $newcontents = $2; 2140 2141 # map the supported section names to the canonical names 2142 if ($newsection =~ m/^description$/i) { 2143 $newsection = $section_default; 2144 } elsif ($newsection =~ m/^context$/i) { 2145 $newsection = $section_context; 2146 } elsif ($newsection =~ m/^returns?$/i) { 2147 $newsection = $section_return; 2148 } elsif ($newsection =~ m/^\@return$/) { 2149 # special: @return is a section, not a param description 2150 $newsection = $section_return; 2151 } 2152 2153 if (($contents ne "") && ($contents ne "\n")) { 2154 if (!$in_doc_sect && $verbose) { 2155 print STDERR "${file}:$.: warning: contents before sections\n"; 2156 ++$warnings; 2157 } 2158 dump_section($file, $section, $contents); 2159 $section = $section_default; 2160 } 2161 2162 $in_doc_sect = 1; 2163 $state = STATE_BODY; 2164 $contents = $newcontents; 2165 $new_start_line = $.; 2166 while (substr($contents, 0, 1) eq " ") { 2167 $contents = substr($contents, 1); 2168 } 2169 if ($contents ne "") { 2170 $contents .= "\n"; 2171 } 2172 $section = $newsection; 2173 $leading_space = undef; 2174 } elsif (/$doc_end/) { 2175 if (($contents ne "") && ($contents ne "\n")) { 2176 dump_section($file, $section, $contents); 2177 $section = $section_default; 2178 $contents = ""; 2179 } 2180 # look for doc_com + <text> + doc_end: 2181 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') { 2182 print STDERR "${file}:$.: warning: suspicious ending line: $_"; 2183 ++$warnings; 2184 } 2185 2186 $prototype = ""; 2187 $state = STATE_PROTO; 2188 $brcount = 0; 2189 $new_start_line = $. + 1; 2190 } elsif (/$doc_content/) { 2191 if ($1 eq "") { 2192 if ($section eq $section_context) { 2193 dump_section($file, $section, $contents); 2194 $section = $section_default; 2195 $contents = ""; 2196 $new_start_line = $.; 2197 $state = STATE_BODY; 2198 } else { 2199 if ($section ne $section_default) { 2200 $state = STATE_BODY_WITH_BLANK_LINE; 2201 } else { 2202 $state = STATE_BODY; 2203 } 2204 $contents .= "\n"; 2205 } 2206 } elsif ($state == STATE_BODY_MAYBE) { 2207 # Continued declaration purpose 2208 chomp($declaration_purpose); 2209 $declaration_purpose .= " " . $1; 2210 $declaration_purpose =~ s/\s+/ /g; 2211 } else { 2212 my $cont = $1; 2213 if ($section =~ m/^@/ || $section eq $section_context) { 2214 if (!defined $leading_space) { 2215 if ($cont =~ m/^(\s+)/) { 2216 $leading_space = $1; 2217 } else { 2218 $leading_space = ""; 2219 } 2220 } 2221 $cont =~ s/^$leading_space//; 2222 } 2223 $contents .= $cont . "\n"; 2224 } 2225 } else { 2226 # i dont know - bad line? ignore. 2227 print STDERR "${file}:$.: warning: bad line: $_"; 2228 ++$warnings; 2229 } 2230 } 2231 2232 2233 # 2234 # STATE_PROTO: reading a function/whatever prototype. 2235 # 2236 sub process_proto($$) { 2237 my $file = shift; 2238 2239 if (/$doc_inline_oneline/) { 2240 $section = $1; 2241 $contents = $2; 2242 if ($contents ne "") { 2243 $contents .= "\n"; 2244 dump_section($file, $section, $contents); 2245 $section = $section_default; 2246 $contents = ""; 2247 } 2248 } elsif (/$doc_inline_start/) { 2249 $state = STATE_INLINE; 2250 $inline_doc_state = STATE_INLINE_NAME; 2251 } elsif ($decl_type eq 'function') { 2252 process_proto_function($_, $file); 2253 } else { 2254 process_proto_type($_, $file); 2255 } 2256 } 2257 2258 # 2259 # STATE_DOCBLOCK: within a DOC: block. 2260 # 2261 sub process_docblock($$) { 2262 my $file = shift; 2263 2264 if (/$doc_end/) { 2265 dump_doc_section($file, $section, $contents); 2266 $section = $section_default; 2267 $contents = ""; 2268 $function = ""; 2269 %parameterdescs = (); 2270 %parametertypes = (); 2271 @parameterlist = (); 2272 %sections = (); 2273 @sectionlist = (); 2274 $prototype = ""; 2275 $state = STATE_NORMAL; 2276 } elsif (/$doc_content/) { 2277 if ( $1 eq "" ) { 2278 $contents .= $blankline; 2279 } else { 2280 $contents .= $1 . "\n"; 2281 } 2282 } 2283 } 2284 2285 # 2286 # STATE_INLINE: docbook comments within a prototype. 2287 # 2288 sub process_inline($$) { 2289 my $file = shift; 2290 2291 # First line (state 1) needs to be a @parameter 2292 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) { 2293 $section = $1; 2294 $contents = $2; 2295 $new_start_line = $.; 2296 if ($contents ne "") { 2297 while (substr($contents, 0, 1) eq " ") { 2298 $contents = substr($contents, 1); 2299 } 2300 $contents .= "\n"; 2301 } 2302 $inline_doc_state = STATE_INLINE_TEXT; 2303 # Documentation block end */ 2304 } elsif (/$doc_inline_end/) { 2305 if (($contents ne "") && ($contents ne "\n")) { 2306 dump_section($file, $section, $contents); 2307 $section = $section_default; 2308 $contents = ""; 2309 } 2310 $state = STATE_PROTO; 2311 $inline_doc_state = STATE_INLINE_NA; 2312 # Regular text 2313 } elsif (/$doc_content/) { 2314 if ($inline_doc_state == STATE_INLINE_TEXT) { 2315 $contents .= $1 . "\n"; 2316 # nuke leading blank lines 2317 if ($contents =~ /^\s*$/) { 2318 $contents = ""; 2319 } 2320 } elsif ($inline_doc_state == STATE_INLINE_NAME) { 2321 $inline_doc_state = STATE_INLINE_ERROR; 2322 print STDERR "${file}:$.: warning: "; 2323 print STDERR "Incorrect use of kernel-doc format: $_"; 2324 ++$warnings; 2325 } 2326 } 2327 } 2328 2329 2330 sub process_file($) { 2331 my $file; 2332 my $initial_section_counter = $section_counter; 2333 my ($orig_file) = @_; 2334 2335 $file = map_filename($orig_file); 2336 2337 if (!open(IN_FILE,"<$file")) { 2338 print STDERR "Error: Cannot open file $file\n"; 2339 ++$errors; 2340 return; 2341 } 2342 2343 $. = 1; 2344 2345 $section_counter = 0; 2346 while (<IN_FILE>) { 2347 while (s/\\\s*$//) { 2348 $_ .= <IN_FILE>; 2349 } 2350 # Replace tabs by spaces 2351 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}; 2352 # Hand this line to the appropriate state handler 2353 if ($state == STATE_NORMAL) { 2354 process_normal(); 2355 } elsif ($state == STATE_NAME) { 2356 process_name($file, $_); 2357 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE || 2358 $state == STATE_BODY_WITH_BLANK_LINE) { 2359 process_body($file, $_); 2360 } elsif ($state == STATE_INLINE) { # scanning for inline parameters 2361 process_inline($file, $_); 2362 } elsif ($state == STATE_PROTO) { 2363 process_proto($file, $_); 2364 } elsif ($state == STATE_DOCBLOCK) { 2365 process_docblock($file, $_); 2366 } 2367 } 2368 2369 # Make sure we got something interesting. 2370 if ($initial_section_counter == $section_counter && $ 2371 output_mode ne "none") { 2372 if ($output_selection == OUTPUT_INCLUDE) { 2373 print STDERR "${file}:1: warning: '$_' not found\n" 2374 for keys %function_table; 2375 } 2376 else { 2377 print STDERR "${file}:1: warning: no structured comments found\n"; 2378 } 2379 } 2380 close IN_FILE; 2381 } 2382 2383 2384 if ($output_mode eq "rst") { 2385 get_sphinx_version() if (!$sphinx_major); 2386 } 2387 2388 $kernelversion = get_kernel_version(); 2389 2390 # generate a sequence of code that will splice in highlighting information 2391 # using the s// operator. 2392 for (my $k = 0; $k < @highlights; $k++) { 2393 my $pattern = $highlights[$k][0]; 2394 my $result = $highlights[$k][1]; 2395 # print STDERR "scanning pattern:$pattern, highlight:($result)\n"; 2396 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n"; 2397 } 2398 2399 # Read the file that maps relative names to absolute names for 2400 # separate source and object directories and for shadow trees. 2401 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) { 2402 my ($relname, $absname); 2403 while(<SOURCE_MAP>) { 2404 chop(); 2405 ($relname, $absname) = (split())[0..1]; 2406 $relname =~ s:^/+::; 2407 $source_map{$relname} = $absname; 2408 } 2409 close(SOURCE_MAP); 2410 } 2411 2412 if ($output_selection == OUTPUT_EXPORTED || 2413 $output_selection == OUTPUT_INTERNAL) { 2414 2415 push(@export_file_list, @ARGV); 2416 2417 foreach (@export_file_list) { 2418 chomp; 2419 process_export_file($_); 2420 } 2421 } 2422 2423 foreach (@ARGV) { 2424 chomp; 2425 process_file($_); 2426 } 2427 if ($verbose && $errors) { 2428 print STDERR "$errors errors\n"; 2429 } 2430 if ($verbose && $warnings) { 2431 print STDERR "$warnings warnings\n"; 2432 } 2433 2434 if ($Werror && $warnings) { 2435 print STDERR "$warnings warnings as Errors\n"; 2436 exit($warnings); 2437 } else { 2438 exit($output_mode eq "none" ? 0 : $errors) 2439 } 2440