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