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 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 66Output 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 79Output 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 87Other parameters: 88 -v Verbose output, more warnings and other information. 89 -h Print this help. 90 -Werror Treat warnings as errors. 91 92EOF 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 214my $errors = 0; 215my $warnings = 0; 216my $anon_struct_union = 0; 217 218# match expressions used to find embedded type information 219my $type_constant = '\b``([^\`]+)``\b'; 220my $type_constant2 = '\%([-_\w]+)'; 221my $type_func = '(\w+)\(\)'; 222my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)'; 223my $type_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)'; 224my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params 225my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params 226my $type_env = '(\$\w+)'; 227my $type_enum = '\&(enum\s*([_\w]+))'; 228my $type_struct = '\&(struct\s*([_\w]+))'; 229my $type_typedef = '\&(typedef\s*([_\w]+))'; 230my $type_union = '\&(union\s*([_\w]+))'; 231my $type_member = '\&([_\w]+)(\.|->)([_\w]+)'; 232my $type_fallback = '\&([_\w]+)'; 233my $type_member_func = $type_member . '\(\)'; 234 235# Output conversion substitutions. 236# One for each output format 237 238# these are pretty rough 239my @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 ); 252my $blankline_man = ""; 253 254# rst-mode 255my @highlights_rst = ( 256 [$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 ); 272my $blankline_rst = "\n"; 273 274# read arguments 275if ($#ARGV == -1) { 276 usage(); 277} 278 279my $kernelversion; 280my ($sphinx_major, $sphinx_minor, $sphinx_patch); 281 282my $dohighlight = ""; 283 284my $verbose = 0; 285my $Werror = 0; 286my $output_mode = "rst"; 287my $output_preformatted = 0; 288my $no_doc_sections = 0; 289my $enable_lineno = 0; 290my @highlights = @highlights_rst; 291my $blankline = $blankline_rst; 292my $modulename = "Kernel API"; 293 294use 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}; 300my $output_selection = OUTPUT_ALL; 301my $show_not_found = 0; # No longer used 302 303my @export_file_list; 304 305my @build_time; 306if (defined($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 313my $man_date = ('January', 'February', 'March', 'April', 'May', 'June', 314 'July', 'August', 'September', 'October', 315 'November', 'December')[$build_time[4]] . 316 " " . ($build_time[5]+1900); 317 318# Essentially these are globals. 319# They probably want to be tidied up, made more localised or something. 320# CAVEAT EMPTOR! Some of the others I localised may not want to be, which 321# could cause "use of undefined value" or other bugs. 322my ($function, %function_table, %parametertypes, $declaration_purpose); 323my %nosymbol_table = (); 324my $declaration_start_line; 325my ($type, $declaration_name, $return_type); 326my ($newsection, $newcontents, $prototype, $brcount, %source_map); 327 328if (defined($ENV{'KBUILD_VERBOSE'})) { 329 $verbose = "$ENV{'KBUILD_VERBOSE'}"; 330} 331 332if (defined($ENV{'KDOC_WERROR'})) { 333 $Werror = "$ENV{'KDOC_WERROR'}"; 334} 335 336if (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. 350my $section_counter = 0; 351 352my $lineprefix=""; 353 354# Parser states 355use 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}; 365my $state; 366my $in_doc_sect; 367my $leading_space; 368 369# Inline documentation state 370use constant { 371 STATE_INLINE_NA => 0, # not applicable ($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}; 379my $inline_doc_state; 380 381#declaration types: can be 382# 'function', 'struct', 'union', 'enum', 'typedef' 383my $decl_type; 384 385my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start. 386my $doc_end = '\*/'; 387my $doc_com = '\s*\*\s*'; 388my $doc_com_body = '\s*\* ?'; 389my $doc_decl = $doc_com . '(\w+)'; 390# @params and a strictly limited set of supported section names 391my $doc_sect = $doc_com . 392 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)'; 393my $doc_content = $doc_com_body . '(.*)'; 394my $doc_block = $doc_com . 'DOC:\s*(.*)?'; 395my $doc_inline_start = '^\s*/\*\*\s*$'; 396my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)'; 397my $doc_inline_end = '^\s*\*/\s*$'; 398my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$'; 399my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;'; 400 401my %parameterdescs; 402my %parameterdesc_start_lines; 403my @parameterlist; 404my %sections; 405my @sectionlist; 406my %section_start_lines; 407my $sectcheck; 408my $struct_actual; 409 410my $contents = ""; 411my $new_start_line = 0; 412 413# the canonical section names. see also $doc_sect above. 414my $section_default = "Description"; # default section 415my $section_intro = "Introduction"; 416my $section = $section_default; 417my $section_context = "Context"; 418my $section_return = "Return"; 419 420my $undescribed = "-- undescribed --"; 421 422reset_state(); 423 424while ($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 $sphinx_patch = 0; 480 } 481 } else { 482 die "Sphinx version should either major.minor or major.minor.patch format\n"; 483 } 484 } else { 485 # Unknown argument 486 usage(); 487 } 488} 489 490# continue execution near EOF; 491 492# The C domain dialect changed on Sphinx 3. So, we need to check the 493# version in order to produce the right tags. 494sub findprog($) 495{ 496 foreach(split(/:/, $ENV{PATH})) { 497 return "$_/$_[0]" if(-x "$_/$_[0]"); 498 } 499} 500 501sub 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 538sub 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# 548sub 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# 557sub 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# 594sub 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 628sub 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, $line; 656 } 657 } 658 print "\n"; 659 } 660} 661 662## 663# output function in man 664sub output_function_man(%) { 665 my %args = %{$_[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'}{$section}); 710 } 711} 712 713## 714# output enum in man 715sub output_enum_man(%) { 716 my %args = %{$_[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'}{$section}); 751 } 752} 753 754## 755# output struct in man 756sub output_struct_man(%) { 757 my %args = %{$_[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'}{$section}); 786 } 787} 788 789## 790# output typedef in man 791sub output_typedef_man(%) { 792 my %args = %{$_[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'}{$section}); 803 } 804} 805 806sub output_blockhead_man(%) { 807 my %args = %{$_[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'}{$section}); 816 } 817} 818 819## 820# output in restructured text 821# 822 823# 824# This could use some work; it's used to output the DOC: sections, and 825# starts by putting out the name of the doc section itself, but that tends 826# to duplicate a header already in the template file. 827# 828sub output_blockhead_rst(%) { 829 my %args = %{$_[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# 847sub 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# 858my $sphinx_literal = '^[^.].*::$'; 859my $sphinx_cblock = '^\.\.\ +code-block::'; 860 861sub 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 . $line . "\n"; 912 } 913} 914 915sub output_function_rst(%) { 916 my %args = %{$_[0]}; 917 my ($parameter, $section); 918 my $oldprefix = $lineprefix; 919 my $start = ""; 920 921 if ($sphinx_major < 3) { 922 if ($args{'typedef'}) { 923 print ".. c:type:: ". $args{'function'} . "\n\n"; 924 print_lineno($declaration_start_line); 925 print " **Typedef**: "; 926 $lineprefix = ""; 927 output_highlight_rst($args{'purpose'}); 928 $start = "\n\n**Syntax**\n\n ``"; 929 } else { 930 print ".. c:function:: "; 931 } 932 } else { 933 print ".. c:macro:: ". $args{'function'} . "\n\n"; 934 935 if ($args{'typedef'}) { 936 print_lineno($declaration_start_line); 937 print " **Typedef**: "; 938 $lineprefix = ""; 939 output_highlight_rst($args{'purpose'}); 940 $start = "\n\n**Syntax**\n\n ``"; 941 } else { 942 print "``"; 943 } 944 } 945 if ($args{'functiontype'} ne "") { 946 $start .= $args{'functiontype'} . " " . $args{'function'} . " ("; 947 } else { 948 $start .= $args{'function'} . " ("; 949 } 950 print $start; 951 952 my $count = 0; 953 foreach my $parameter (@{$args{'parameterlist'}}) { 954 if ($count ne 0) { 955 print ", "; 956 } 957 $count++; 958 $type = $args{'parametertypes'}{$parameter}; 959 960 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) { 961 # pointer-to-function 962 print $1 . $parameter . ") (" . $2 . ")"; 963 } else { 964 print $type; 965 } 966 } 967 if ($args{'typedef'}) { 968 print ");``\n\n"; 969 } else { 970 if ($sphinx_major < 3) { 971 print ")\n\n"; 972 } else { 973 print ")``\n"; 974 } 975 print_lineno($declaration_start_line); 976 $lineprefix = " "; 977 output_highlight_rst($args{'purpose'}); 978 print "\n"; 979 } 980 981 print "**Parameters**\n\n"; 982 $lineprefix = " "; 983 foreach $parameter (@{$args{'parameterlist'}}) { 984 my $parameter_name = $parameter; 985 $parameter_name =~ s/\[.*//; 986 $type = $args{'parametertypes'}{$parameter}; 987 988 if ($type ne "") { 989 print "``$type``\n"; 990 } else { 991 print "``$parameter``\n"; 992 } 993 994 print_lineno($parameterdesc_start_lines{$parameter_name}); 995 996 if (defined($args{'parameterdescs'}{$parameter_name}) && 997 $args{'parameterdescs'}{$parameter_name} ne $undescribed) { 998 output_highlight_rst($args{'parameterdescs'}{$parameter_name}); 999 } else { 1000 print " *undescribed*\n"; 1001 } 1002 print "\n"; 1003 } 1004 1005 $lineprefix = $oldprefix; 1006 output_section_rst(@_); 1007} 1008 1009sub output_section_rst(%) { 1010 my %args = %{$_[0]}; 1011 my $section; 1012 my $oldprefix = $lineprefix; 1013 $lineprefix = ""; 1014 1015 foreach $section (@{$args{'sectionlist'}}) { 1016 print "**$section**\n\n"; 1017 print_lineno($section_start_lines{$section}); 1018 output_highlight_rst($args{'sections'}{$section}); 1019 print "\n"; 1020 } 1021 print "\n"; 1022 $lineprefix = $oldprefix; 1023} 1024 1025sub output_enum_rst(%) { 1026 my %args = %{$_[0]}; 1027 my ($parameter); 1028 my $oldprefix = $lineprefix; 1029 my $count; 1030 1031 if ($sphinx_major < 3) { 1032 my $name = "enum " . $args{'enum'}; 1033 print "\n\n.. c:type:: " . $name . "\n\n"; 1034 } else { 1035 my $name = $args{'enum'}; 1036 print "\n\n.. c:enum:: " . $name . "\n\n"; 1037 } 1038 print_lineno($declaration_start_line); 1039 $lineprefix = " "; 1040 output_highlight_rst($args{'purpose'}); 1041 print "\n"; 1042 1043 print "**Constants**\n\n"; 1044 $lineprefix = " "; 1045 foreach $parameter (@{$args{'parameterlist'}}) { 1046 print "``$parameter``\n"; 1047 if ($args{'parameterdescs'}{$parameter} ne $undescribed) { 1048 output_highlight_rst($args{'parameterdescs'}{$parameter}); 1049 } else { 1050 print " *undescribed*\n"; 1051 } 1052 print "\n"; 1053 } 1054 1055 $lineprefix = $oldprefix; 1056 output_section_rst(@_); 1057} 1058 1059sub output_typedef_rst(%) { 1060 my %args = %{$_[0]}; 1061 my ($parameter); 1062 my $oldprefix = $lineprefix; 1063 my $name; 1064 1065 if ($sphinx_major < 3) { 1066 $name = "typedef " . $args{'typedef'}; 1067 } else { 1068 $name = $args{'typedef'}; 1069 } 1070 print "\n\n.. c:type:: " . $name . "\n\n"; 1071 print_lineno($declaration_start_line); 1072 $lineprefix = " "; 1073 output_highlight_rst($args{'purpose'}); 1074 print "\n"; 1075 1076 $lineprefix = $oldprefix; 1077 output_section_rst(@_); 1078} 1079 1080sub output_struct_rst(%) { 1081 my %args = %{$_[0]}; 1082 my ($parameter); 1083 my $oldprefix = $lineprefix; 1084 1085 if ($sphinx_major < 3) { 1086 my $name = $args{'type'} . " " . $args{'struct'}; 1087 print "\n\n.. c:type:: " . $name . "\n\n"; 1088 } else { 1089 my $name = $args{'struct'}; 1090 print "\n\n.. c:struct:: " . $name . "\n\n"; 1091 } 1092 print_lineno($declaration_start_line); 1093 $lineprefix = " "; 1094 output_highlight_rst($args{'purpose'}); 1095 print "\n"; 1096 1097 print "**Definition**\n\n"; 1098 print "::\n\n"; 1099 my $declaration = $args{'definition'}; 1100 $declaration =~ s/\t/ /g; 1101 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n"; 1102 1103 print "**Members**\n\n"; 1104 $lineprefix = " "; 1105 foreach $parameter (@{$args{'parameterlist'}}) { 1106 ($parameter =~ /^#/) && next; 1107 1108 my $parameter_name = $parameter; 1109 $parameter_name =~ s/\[.*//; 1110 1111 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next; 1112 $type = $args{'parametertypes'}{$parameter}; 1113 print_lineno($parameterdesc_start_lines{$parameter_name}); 1114 print "``" . $parameter . "``\n"; 1115 output_highlight_rst($args{'parameterdescs'}{$parameter_name}); 1116 print "\n"; 1117 } 1118 print "\n"; 1119 1120 $lineprefix = $oldprefix; 1121 output_section_rst(@_); 1122} 1123 1124## none mode output functions 1125 1126sub output_function_none(%) { 1127} 1128 1129sub output_enum_none(%) { 1130} 1131 1132sub output_typedef_none(%) { 1133} 1134 1135sub output_struct_none(%) { 1136} 1137 1138sub output_blockhead_none(%) { 1139} 1140 1141## 1142# generic output function for all types (function, struct/union, typedef, enum); 1143# calls the generated, variable output_ function name based on 1144# functype and output_mode 1145sub output_declaration { 1146 no strict 'refs'; 1147 my $name = shift; 1148 my $functype = shift; 1149 my $func = "output_${functype}_$output_mode"; 1150 1151 return if (defined($nosymbol_table{$name})); 1152 1153 if (($output_selection == OUTPUT_ALL) || 1154 (($output_selection == OUTPUT_INCLUDE || 1155 $output_selection == OUTPUT_EXPORTED) && 1156 defined($function_table{$name})) || 1157 ($output_selection == OUTPUT_INTERNAL && 1158 !($functype eq "function" && defined($function_table{$name})))) 1159 { 1160 &$func(@_); 1161 $section_counter++; 1162 } 1163} 1164 1165## 1166# generic output function - calls the right one based on current output mode. 1167sub output_blockhead { 1168 no strict 'refs'; 1169 my $func = "output_blockhead_" . $output_mode; 1170 &$func(@_); 1171 $section_counter++; 1172} 1173 1174## 1175# takes a declaration (struct, union, enum, typedef) and 1176# invokes the right handler. NOT called for functions. 1177sub dump_declaration($$) { 1178 no strict 'refs'; 1179 my ($prototype, $file) = @_; 1180 my $func = "dump_" . $decl_type; 1181 &$func(@_); 1182} 1183 1184sub dump_union($$) { 1185 dump_struct(@_); 1186} 1187 1188sub dump_struct($$) { 1189 my $x = shift; 1190 my $file = shift; 1191 1192 if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) { 1193 my $decl_type = $1; 1194 $declaration_name = $2; 1195 my $members = $3; 1196 1197 # ignore members marked private: 1198 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi; 1199 $members =~ s/\/\*\s*private:.*//gosi; 1200 # strip comments: 1201 $members =~ s/\/\*.*?\*\///gos; 1202 # strip attributes 1203 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi; 1204 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos; 1205 $members =~ s/\s*__packed\s*/ /gos; 1206 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos; 1207 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos; 1208 $members =~ s/\s*____cacheline_aligned/ /gos; 1209 1210 # replace DECLARE_BITMAP 1211 $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos; 1212 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos; 1213 # replace DECLARE_HASHTABLE 1214 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos; 1215 # replace DECLARE_KFIFO 1216 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos; 1217 # replace DECLARE_KFIFO_PTR 1218 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos; 1219 1220 my $declaration = $members; 1221 1222 # Split nested struct/union elements as newer ones 1223 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) { 1224 my $newmember; 1225 my $maintype = $1; 1226 my $ids = $4; 1227 my $content = $3; 1228 foreach my $id(split /,/, $ids) { 1229 $newmember .= "$maintype $id; "; 1230 1231 $id =~ s/[:\[].*//; 1232 $id =~ s/^\s*\**(\S+)\s*/$1/; 1233 foreach my $arg (split /;/, $content) { 1234 next if ($arg =~ m/^\s*$/); 1235 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) { 1236 # pointer-to-function 1237 my $type = $1; 1238 my $name = $2; 1239 my $extra = $3; 1240 next if (!$name); 1241 if ($id =~ m/^\s*$/) { 1242 # anonymous struct/union 1243 $newmember .= "$type$name$extra; "; 1244 } else { 1245 $newmember .= "$type$id.$name$extra; "; 1246 } 1247 } else { 1248 my $type; 1249 my $names; 1250 $arg =~ s/^\s+//; 1251 $arg =~ s/\s+$//; 1252 # Handle bitmaps 1253 $arg =~ s/:\s*\d+\s*//g; 1254 # Handle arrays 1255 $arg =~ s/\[.*\]//g; 1256 # The type may have multiple words, 1257 # and multiple IDs can be defined, like: 1258 # const struct foo, *bar, foobar 1259 # So, we remove spaces when parsing the 1260 # names, in order to match just names 1261 # and commas for the names 1262 $arg =~ s/\s*,\s*/,/g; 1263 if ($arg =~ m/(.*)\s+([\S+,]+)/) { 1264 $type = $1; 1265 $names = $2; 1266 } else { 1267 $newmember .= "$arg; "; 1268 next; 1269 } 1270 foreach my $name (split /,/, $names) { 1271 $name =~ s/^\s*\**(\S+)\s*/$1/; 1272 next if (($name =~ m/^\s*$/)); 1273 if ($id =~ m/^\s*$/) { 1274 # anonymous struct/union 1275 $newmember .= "$type $name; "; 1276 } else { 1277 $newmember .= "$type $id.$name; "; 1278 } 1279 } 1280 } 1281 } 1282 } 1283 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/; 1284 } 1285 1286 # Ignore other nested elements, like enums 1287 $members =~ s/(\{[^\{\}]*\})//g; 1288 1289 create_parameterlist($members, ';', $file, $declaration_name); 1290 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual); 1291 1292 # Adjust declaration for better display 1293 $declaration =~ s/([\{;])/$1\n/g; 1294 $declaration =~ s/\}\s+;/};/g; 1295 # Better handle inlined enums 1296 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/); 1297 1298 my @def_args = split /\n/, $declaration; 1299 my $level = 1; 1300 $declaration = ""; 1301 foreach my $clause (@def_args) { 1302 $clause =~ s/^\s+//; 1303 $clause =~ s/\s+$//; 1304 $clause =~ s/\s+/ /; 1305 next if (!$clause); 1306 $level-- if ($clause =~ m/(\})/ && $level > 1); 1307 if (!($clause =~ m/^\s*#/)) { 1308 $declaration .= "\t" x $level; 1309 } 1310 $declaration .= "\t" . $clause . "\n"; 1311 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/)); 1312 } 1313 output_declaration($declaration_name, 1314 'struct', 1315 {'struct' => $declaration_name, 1316 'module' => $modulename, 1317 'definition' => $declaration, 1318 'parameterlist' => \@parameterlist, 1319 'parameterdescs' => \%parameterdescs, 1320 'parametertypes' => \%parametertypes, 1321 'sectionlist' => \@sectionlist, 1322 'sections' => \%sections, 1323 'purpose' => $declaration_purpose, 1324 'type' => $decl_type 1325 }); 1326 } 1327 else { 1328 print STDERR "${file}:$.: error: Cannot parse struct or union!\n"; 1329 ++$errors; 1330 } 1331} 1332 1333 1334sub show_warnings($$) { 1335 my $functype = shift; 1336 my $name = shift; 1337 1338 return 0 if (defined($nosymbol_table{$name})); 1339 1340 return 1 if ($output_selection == OUTPUT_ALL); 1341 1342 if ($output_selection == OUTPUT_EXPORTED) { 1343 if (defined($function_table{$name})) { 1344 return 1; 1345 } else { 1346 return 0; 1347 } 1348 } 1349 if ($output_selection == OUTPUT_INTERNAL) { 1350 if (!($functype eq "function" && defined($function_table{$name}))) { 1351 return 1; 1352 } else { 1353 return 0; 1354 } 1355 } 1356 if ($output_selection == OUTPUT_INCLUDE) { 1357 if (defined($function_table{$name})) { 1358 return 1; 1359 } else { 1360 return 0; 1361 } 1362 } 1363 die("Please add the new output type at show_warnings()"); 1364} 1365 1366sub dump_enum($$) { 1367 my $x = shift; 1368 my $file = shift; 1369 my $members; 1370 1371 1372 $x =~ s@/\*.*?\*/@@gos; # strip comments. 1373 # strip #define macros inside enums 1374 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos; 1375 1376 if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) { 1377 $declaration_name = $2; 1378 $members = $1; 1379 } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) { 1380 $declaration_name = $1; 1381 $members = $2; 1382 } 1383 1384 if ($declaration_name) { 1385 my %_members; 1386 1387 $members =~ s/\s+$//; 1388 1389 foreach my $arg (split ',', $members) { 1390 $arg =~ s/^\s*(\w+).*/$1/; 1391 push @parameterlist, $arg; 1392 if (!$parameterdescs{$arg}) { 1393 $parameterdescs{$arg} = $undescribed; 1394 if (show_warnings("enum", $declaration_name)) { 1395 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n"; 1396 } 1397 } 1398 $_members{$arg} = 1; 1399 } 1400 1401 while (my ($k, $v) = each %parameterdescs) { 1402 if (!exists($_members{$k})) { 1403 if (show_warnings("enum", $declaration_name)) { 1404 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n"; 1405 } 1406 } 1407 } 1408 1409 output_declaration($declaration_name, 1410 'enum', 1411 {'enum' => $declaration_name, 1412 'module' => $modulename, 1413 'parameterlist' => \@parameterlist, 1414 'parameterdescs' => \%parameterdescs, 1415 'sectionlist' => \@sectionlist, 1416 'sections' => \%sections, 1417 'purpose' => $declaration_purpose 1418 }); 1419 } else { 1420 print STDERR "${file}:$.: error: Cannot parse enum!\n"; 1421 ++$errors; 1422 } 1423} 1424 1425sub dump_typedef($$) { 1426 my $x = shift; 1427 my $file = shift; 1428 1429 $x =~ s@/\*.*?\*/@@gos; # strip comments. 1430 1431 # Parse function prototypes 1432 if ($x =~ /typedef\s+(\w+)\s*\(\*\s*(\w\S+)\s*\)\s*\((.*)\);/ || 1433 $x =~ /typedef\s+(\w+)\s*(\w\S+)\s*\s*\((.*)\);/) { 1434 1435 # Function typedefs 1436 $return_type = $1; 1437 $declaration_name = $2; 1438 my $args = $3; 1439 1440 create_parameterlist($args, ',', $file, $declaration_name); 1441 1442 output_declaration($declaration_name, 1443 'function', 1444 {'function' => $declaration_name, 1445 'typedef' => 1, 1446 'module' => $modulename, 1447 'functiontype' => $return_type, 1448 'parameterlist' => \@parameterlist, 1449 'parameterdescs' => \%parameterdescs, 1450 'parametertypes' => \%parametertypes, 1451 'sectionlist' => \@sectionlist, 1452 'sections' => \%sections, 1453 'purpose' => $declaration_purpose 1454 }); 1455 return; 1456 } 1457 1458 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) { 1459 $x =~ s/\(*.\)\s*;$/;/; 1460 $x =~ s/\[*.\]\s*;$/;/; 1461 } 1462 1463 if ($x =~ /typedef.*\s+(\w+)\s*;/) { 1464 $declaration_name = $1; 1465 1466 output_declaration($declaration_name, 1467 'typedef', 1468 {'typedef' => $declaration_name, 1469 'module' => $modulename, 1470 'sectionlist' => \@sectionlist, 1471 'sections' => \%sections, 1472 'purpose' => $declaration_purpose 1473 }); 1474 } 1475 else { 1476 print STDERR "${file}:$.: error: Cannot parse typedef!\n"; 1477 ++$errors; 1478 } 1479} 1480 1481sub save_struct_actual($) { 1482 my $actual = shift; 1483 1484 # strip all spaces from the actual param so that it looks like one string item 1485 $actual =~ s/\s*//g; 1486 $struct_actual = $struct_actual . $actual . " "; 1487} 1488 1489sub create_parameterlist($$$$) { 1490 my $args = shift; 1491 my $splitter = shift; 1492 my $file = shift; 1493 my $declaration_name = shift; 1494 my $type; 1495 my $param; 1496 1497 # temporarily replace commas inside function pointer definition 1498 while ($args =~ /(\([^\),]+),/) { 1499 $args =~ s/(\([^\),]+),/$1#/g; 1500 } 1501 1502 foreach my $arg (split($splitter, $args)) { 1503 # strip comments 1504 $arg =~ s/\/\*.*\*\///; 1505 # strip leading/trailing spaces 1506 $arg =~ s/^\s*//; 1507 $arg =~ s/\s*$//; 1508 $arg =~ s/\s+/ /; 1509 1510 if ($arg =~ /^#/) { 1511 # Treat preprocessor directive as a typeless variable just to fill 1512 # corresponding data structures "correctly". Catch it later in 1513 # output_* subs. 1514 push_parameter($arg, "", "", $file); 1515 } elsif ($arg =~ m/\(.+\)\s*\(/) { 1516 # pointer-to-function 1517 $arg =~ tr/#/,/; 1518 $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/; 1519 $param = $1; 1520 $type = $arg; 1521 $type =~ s/([^\(]+\(\*?)\s*$param/$1/; 1522 save_struct_actual($param); 1523 push_parameter($param, $type, $arg, $file, $declaration_name); 1524 } elsif ($arg) { 1525 $arg =~ s/\s*:\s*/:/g; 1526 $arg =~ s/\s*\[/\[/g; 1527 1528 my @args = split('\s*,\s*', $arg); 1529 if ($args[0] =~ m/\*/) { 1530 $args[0] =~ s/(\*+)\s*/ $1/; 1531 } 1532 1533 my @first_arg; 1534 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) { 1535 shift @args; 1536 push(@first_arg, split('\s+', $1)); 1537 push(@first_arg, $2); 1538 } else { 1539 @first_arg = split('\s+', shift @args); 1540 } 1541 1542 unshift(@args, pop @first_arg); 1543 $type = join " ", @first_arg; 1544 1545 foreach $param (@args) { 1546 if ($param =~ m/^(\*+)\s*(.*)/) { 1547 save_struct_actual($2); 1548 1549 push_parameter($2, "$type $1", $arg, $file, $declaration_name); 1550 } 1551 elsif ($param =~ m/(.*?):(\d+)/) { 1552 if ($type ne "") { # skip unnamed bit-fields 1553 save_struct_actual($1); 1554 push_parameter($1, "$type:$2", $arg, $file, $declaration_name) 1555 } 1556 } 1557 else { 1558 save_struct_actual($param); 1559 push_parameter($param, $type, $arg, $file, $declaration_name); 1560 } 1561 } 1562 } 1563 } 1564} 1565 1566sub push_parameter($$$$$) { 1567 my $param = shift; 1568 my $type = shift; 1569 my $org_arg = shift; 1570 my $file = shift; 1571 my $declaration_name = shift; 1572 1573 if (($anon_struct_union == 1) && ($type eq "") && 1574 ($param eq "}")) { 1575 return; # ignore the ending }; from anon. struct/union 1576 } 1577 1578 $anon_struct_union = 0; 1579 $param =~ s/[\[\)].*//; 1580 1581 if ($type eq "" && $param =~ /\.\.\.$/) 1582 { 1583 if (!$param =~ /\w\.\.\.$/) { 1584 # handles unnamed variable parameters 1585 $param = "..."; 1586 } 1587 elsif ($param =~ /\w\.\.\.$/) { 1588 # for named variable parameters of the form `x...`, remove the dots 1589 $param =~ s/\.\.\.$//; 1590 } 1591 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") { 1592 $parameterdescs{$param} = "variable arguments"; 1593 } 1594 } 1595 elsif ($type eq "" && ($param eq "" or $param eq "void")) 1596 { 1597 $param="void"; 1598 $parameterdescs{void} = "no arguments"; 1599 } 1600 elsif ($type eq "" && ($param eq "struct" or $param eq "union")) 1601 # handle unnamed (anonymous) union or struct: 1602 { 1603 $type = $param; 1604 $param = "{unnamed_" . $param . "}"; 1605 $parameterdescs{$param} = "anonymous\n"; 1606 $anon_struct_union = 1; 1607 } 1608 1609 # warn if parameter has no description 1610 # (but ignore ones starting with # as these are not parameters 1611 # but inline preprocessor statements); 1612 # Note: It will also ignore void params and unnamed structs/unions 1613 if (!defined $parameterdescs{$param} && $param !~ /^#/) { 1614 $parameterdescs{$param} = $undescribed; 1615 1616 if (show_warnings($type, $declaration_name) && $param !~ /\./) { 1617 print STDERR 1618 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n"; 1619 ++$warnings; 1620 } 1621 } 1622 1623 # strip spaces from $param so that it is one continuous string 1624 # on @parameterlist; 1625 # this fixes a problem where check_sections() cannot find 1626 # a parameter like "addr[6 + 2]" because it actually appears 1627 # as "addr[6", "+", "2]" on the parameter list; 1628 # but it's better to maintain the param string unchanged for output, 1629 # so just weaken the string compare in check_sections() to ignore 1630 # "[blah" in a parameter string; 1631 ###$param =~ s/\s*//g; 1632 push @parameterlist, $param; 1633 $org_arg =~ s/\s\s+/ /g; 1634 $parametertypes{$param} = $org_arg; 1635} 1636 1637sub check_sections($$$$$) { 1638 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_; 1639 my @sects = split ' ', $sectcheck; 1640 my @prms = split ' ', $prmscheck; 1641 my $err; 1642 my ($px, $sx); 1643 my $prm_clean; # strip trailing "[array size]" and/or beginning "*" 1644 1645 foreach $sx (0 .. $#sects) { 1646 $err = 1; 1647 foreach $px (0 .. $#prms) { 1648 $prm_clean = $prms[$px]; 1649 $prm_clean =~ s/\[.*\]//; 1650 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i; 1651 # ignore array size in a parameter string; 1652 # however, the original param string may contain 1653 # spaces, e.g.: addr[6 + 2] 1654 # and this appears in @prms as "addr[6" since the 1655 # parameter list is split at spaces; 1656 # hence just ignore "[..." for the sections check; 1657 $prm_clean =~ s/\[.*//; 1658 1659 ##$prm_clean =~ s/^\**//; 1660 if ($prm_clean eq $sects[$sx]) { 1661 $err = 0; 1662 last; 1663 } 1664 } 1665 if ($err) { 1666 if ($decl_type eq "function") { 1667 print STDERR "${file}:$.: warning: " . 1668 "Excess function parameter " . 1669 "'$sects[$sx]' " . 1670 "description in '$decl_name'\n"; 1671 ++$warnings; 1672 } 1673 } 1674 } 1675} 1676 1677## 1678# Checks the section describing the return value of a function. 1679sub check_return_section { 1680 my $file = shift; 1681 my $declaration_name = shift; 1682 my $return_type = shift; 1683 1684 # Ignore an empty return type (It's a macro) 1685 # Ignore functions with a "void" return type. (But don't ignore "void *") 1686 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) { 1687 return; 1688 } 1689 1690 if (!defined($sections{$section_return}) || 1691 $sections{$section_return} eq "") { 1692 print STDERR "${file}:$.: warning: " . 1693 "No description found for return value of " . 1694 "'$declaration_name'\n"; 1695 ++$warnings; 1696 } 1697} 1698 1699## 1700# takes a function prototype and the name of the current file being 1701# processed and spits out all the details stored in the global 1702# arrays/hashes. 1703sub dump_function($$) { 1704 my $prototype = shift; 1705 my $file = shift; 1706 my $noret = 0; 1707 1708 print_lineno($new_start_line); 1709 1710 $prototype =~ s/^static +//; 1711 $prototype =~ s/^extern +//; 1712 $prototype =~ s/^asmlinkage +//; 1713 $prototype =~ s/^inline +//; 1714 $prototype =~ s/^__inline__ +//; 1715 $prototype =~ s/^__inline +//; 1716 $prototype =~ s/^__always_inline +//; 1717 $prototype =~ s/^noinline +//; 1718 $prototype =~ s/__init +//; 1719 $prototype =~ s/__init_or_module +//; 1720 $prototype =~ s/__meminit +//; 1721 $prototype =~ s/__must_check +//; 1722 $prototype =~ s/__weak +//; 1723 $prototype =~ s/__sched +//; 1724 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//; 1725 my $define = $prototype =~ s/^#\s*define\s+//; #ak added 1726 $prototype =~ s/__attribute__\s*\(\( 1727 (?: 1728 [\w\s]++ # attribute name 1729 (?:\([^)]*+\))? # attribute arguments 1730 \s*+,? # optional comma at the end 1731 )+ 1732 \)\)\s+//x; 1733 1734 # Yes, this truly is vile. We are looking for: 1735 # 1. Return type (may be nothing if we're looking at a macro) 1736 # 2. Function name 1737 # 3. Function parameters. 1738 # 1739 # All the while we have to watch out for function pointer parameters 1740 # (which IIRC is what the two sections are for), C types (these 1741 # regexps don't even start to express all the possibilities), and 1742 # so on. 1743 # 1744 # If you mess with these regexps, it's a good idea to check that 1745 # the following functions' documentation still comes out right: 1746 # - parport_register_device (function pointer parameters) 1747 # - atomic_set (macro) 1748 # - pci_match_device, __copy_to_user (long return type) 1749 1750 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) { 1751 # This is an object-like macro, it has no return type and no parameter 1752 # list. 1753 # Function-like macros are not allowed to have spaces between 1754 # declaration_name and opening parenthesis (notice the \s+). 1755 $return_type = $1; 1756 $declaration_name = $2; 1757 $noret = 1; 1758 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1759 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1760 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1761 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1762 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1763 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1764 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ || 1765 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1766 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1767 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1768 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1769 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1770 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1771 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1772 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1773 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ || 1774 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) { 1775 $return_type = $1; 1776 $declaration_name = $2; 1777 my $args = $3; 1778 1779 create_parameterlist($args, ',', $file, $declaration_name); 1780 } else { 1781 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n"; 1782 return; 1783 } 1784 1785 my $prms = join " ", @parameterlist; 1786 check_sections($file, $declaration_name, "function", $sectcheck, $prms); 1787 1788 # This check emits a lot of warnings at the moment, because many 1789 # functions don't have a 'Return' doc section. So until the number 1790 # of warnings goes sufficiently down, the check is only performed in 1791 # verbose mode. 1792 # TODO: always perform the check. 1793 if ($verbose && !$noret) { 1794 check_return_section($file, $declaration_name, $return_type); 1795 } 1796 1797 # The function parser can be called with a typedef parameter. 1798 # Handle it. 1799 if ($return_type =~ /typedef/) { 1800 output_declaration($declaration_name, 1801 'function', 1802 {'function' => $declaration_name, 1803 'typedef' => 1, 1804 'module' => $modulename, 1805 'functiontype' => $return_type, 1806 'parameterlist' => \@parameterlist, 1807 'parameterdescs' => \%parameterdescs, 1808 'parametertypes' => \%parametertypes, 1809 'sectionlist' => \@sectionlist, 1810 'sections' => \%sections, 1811 'purpose' => $declaration_purpose 1812 }); 1813 } else { 1814 output_declaration($declaration_name, 1815 'function', 1816 {'function' => $declaration_name, 1817 'module' => $modulename, 1818 'functiontype' => $return_type, 1819 'parameterlist' => \@parameterlist, 1820 'parameterdescs' => \%parameterdescs, 1821 'parametertypes' => \%parametertypes, 1822 'sectionlist' => \@sectionlist, 1823 'sections' => \%sections, 1824 'purpose' => $declaration_purpose 1825 }); 1826 } 1827} 1828 1829sub reset_state { 1830 $function = ""; 1831 %parameterdescs = (); 1832 %parametertypes = (); 1833 @parameterlist = (); 1834 %sections = (); 1835 @sectionlist = (); 1836 $sectcheck = ""; 1837 $struct_actual = ""; 1838 $prototype = ""; 1839 1840 $state = STATE_NORMAL; 1841 $inline_doc_state = STATE_INLINE_NA; 1842} 1843 1844sub tracepoint_munge($) { 1845 my $file = shift; 1846 my $tracepointname = 0; 1847 my $tracepointargs = 0; 1848 1849 if ($prototype =~ m/TRACE_EVENT\((.*?),/) { 1850 $tracepointname = $1; 1851 } 1852 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) { 1853 $tracepointname = $1; 1854 } 1855 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) { 1856 $tracepointname = $2; 1857 } 1858 $tracepointname =~ s/^\s+//; #strip leading whitespace 1859 if ($prototype =~ m/TP_PROTO\((.*?)\)/) { 1860 $tracepointargs = $1; 1861 } 1862 if (($tracepointname eq 0) || ($tracepointargs eq 0)) { 1863 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n". 1864 "$prototype\n"; 1865 } else { 1866 $prototype = "static inline void trace_$tracepointname($tracepointargs)"; 1867 } 1868} 1869 1870sub syscall_munge() { 1871 my $void = 0; 1872 1873 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's 1874## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) { 1875 if ($prototype =~ m/SYSCALL_DEFINE0/) { 1876 $void = 1; 1877## $prototype = "long sys_$1(void)"; 1878 } 1879 1880 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name 1881 if ($prototype =~ m/long (sys_.*?),/) { 1882 $prototype =~ s/,/\(/; 1883 } elsif ($void) { 1884 $prototype =~ s/\)/\(void\)/; 1885 } 1886 1887 # now delete all of the odd-number commas in $prototype 1888 # so that arg types & arg names don't have a comma between them 1889 my $count = 0; 1890 my $len = length($prototype); 1891 if ($void) { 1892 $len = 0; # skip the for-loop 1893 } 1894 for (my $ix = 0; $ix < $len; $ix++) { 1895 if (substr($prototype, $ix, 1) eq ',') { 1896 $count++; 1897 if ($count % 2 == 1) { 1898 substr($prototype, $ix, 1) = ' '; 1899 } 1900 } 1901 } 1902} 1903 1904sub process_proto_function($$) { 1905 my $x = shift; 1906 my $file = shift; 1907 1908 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line 1909 1910 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) { 1911 # do nothing 1912 } 1913 elsif ($x =~ /([^\{]*)/) { 1914 $prototype .= $1; 1915 } 1916 1917 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) { 1918 $prototype =~ s@/\*.*?\*/@@gos; # strip comments. 1919 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's. 1920 $prototype =~ s@^\s+@@gos; # strip leading spaces 1921 1922 # Handle prototypes for function pointers like: 1923 # int (*pcs_config)(struct foo) 1924 $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos; 1925 1926 if ($prototype =~ /SYSCALL_DEFINE/) { 1927 syscall_munge(); 1928 } 1929 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ || 1930 $prototype =~ /DEFINE_SINGLE_EVENT/) 1931 { 1932 tracepoint_munge($file); 1933 } 1934 dump_function($prototype, $file); 1935 reset_state(); 1936 } 1937} 1938 1939sub process_proto_type($$) { 1940 my $x = shift; 1941 my $file = shift; 1942 1943 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's. 1944 $x =~ s@^\s+@@gos; # strip leading spaces 1945 $x =~ s@\s+$@@gos; # strip trailing spaces 1946 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line 1947 1948 if ($x =~ /^#/) { 1949 # To distinguish preprocessor directive from regular declaration later. 1950 $x .= ";"; 1951 } 1952 1953 while (1) { 1954 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) { 1955 if( length $prototype ) { 1956 $prototype .= " " 1957 } 1958 $prototype .= $1 . $2; 1959 ($2 eq '{') && $brcount++; 1960 ($2 eq '}') && $brcount--; 1961 if (($2 eq ';') && ($brcount == 0)) { 1962 dump_declaration($prototype, $file); 1963 reset_state(); 1964 last; 1965 } 1966 $x = $3; 1967 } else { 1968 $prototype .= $x; 1969 last; 1970 } 1971 } 1972} 1973 1974 1975sub map_filename($) { 1976 my $file; 1977 my ($orig_file) = @_; 1978 1979 if (defined($ENV{'SRCTREE'})) { 1980 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file; 1981 } else { 1982 $file = $orig_file; 1983 } 1984 1985 if (defined($source_map{$file})) { 1986 $file = $source_map{$file}; 1987 } 1988 1989 return $file; 1990} 1991 1992sub process_export_file($) { 1993 my ($orig_file) = @_; 1994 my $file = map_filename($orig_file); 1995 1996 if (!open(IN,"<$file")) { 1997 print STDERR "Error: Cannot open file $file\n"; 1998 ++$errors; 1999 return; 2000 } 2001 2002 while (<IN>) { 2003 if (/$export_symbol/) { 2004 next if (defined($nosymbol_table{$2})); 2005 $function_table{$2} = 1; 2006 } 2007 } 2008 2009 close(IN); 2010} 2011 2012# 2013# Parsers for the various processing states. 2014# 2015# STATE_NORMAL: looking for the /** to begin everything. 2016# 2017sub process_normal() { 2018 if (/$doc_start/o) { 2019 $state = STATE_NAME; # next line is always the function name 2020 $in_doc_sect = 0; 2021 $declaration_start_line = $. + 1; 2022 } 2023} 2024 2025# 2026# STATE_NAME: Looking for the "name - description" line 2027# 2028sub process_name($$) { 2029 my $file = shift; 2030 my $identifier; 2031 my $descr; 2032 2033 if (/$doc_block/o) { 2034 $state = STATE_DOCBLOCK; 2035 $contents = ""; 2036 $new_start_line = $.; 2037 2038 if ( $1 eq "" ) { 2039 $section = $section_intro; 2040 } else { 2041 $section = $1; 2042 } 2043 } 2044 elsif (/$doc_decl/o) { 2045 $identifier = $1; 2046 if (/\s*([\w\s]+?)(\(\))?\s*-/) { 2047 $identifier = $1; 2048 } 2049 2050 $state = STATE_BODY; 2051 # if there's no @param blocks need to set up default section 2052 # here 2053 $contents = ""; 2054 $section = $section_default; 2055 $new_start_line = $. + 1; 2056 if (/-(.*)/) { 2057 # strip leading/trailing/multiple spaces 2058 $descr= $1; 2059 $descr =~ s/^\s*//; 2060 $descr =~ s/\s*$//; 2061 $descr =~ s/\s+/ /g; 2062 $declaration_purpose = $descr; 2063 $state = STATE_BODY_MAYBE; 2064 } else { 2065 $declaration_purpose = ""; 2066 } 2067 2068 if (($declaration_purpose eq "") && $verbose) { 2069 print STDERR "${file}:$.: warning: missing initial short description on line:\n"; 2070 print STDERR $_; 2071 ++$warnings; 2072 } 2073 2074 if ($identifier =~ m/^struct\b/) { 2075 $decl_type = 'struct'; 2076 } elsif ($identifier =~ m/^union\b/) { 2077 $decl_type = 'union'; 2078 } elsif ($identifier =~ m/^enum\b/) { 2079 $decl_type = 'enum'; 2080 } elsif ($identifier =~ m/^typedef\b/) { 2081 $decl_type = 'typedef'; 2082 } else { 2083 $decl_type = 'function'; 2084 } 2085 2086 if ($verbose) { 2087 print STDERR "${file}:$.: info: Scanning doc for $identifier\n"; 2088 } 2089 } else { 2090 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.", 2091 " - I thought it was a doc line\n"; 2092 ++$warnings; 2093 $state = STATE_NORMAL; 2094 } 2095} 2096 2097 2098# 2099# STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment. 2100# 2101sub process_body($$) { 2102 my $file = shift; 2103 2104 # Until all named variable macro parameters are 2105 # documented using the bare name (`x`) rather than with 2106 # dots (`x...`), strip the dots: 2107 if ($section =~ /\w\.\.\.$/) { 2108 $section =~ s/\.\.\.$//; 2109 2110 if ($verbose) { 2111 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n"; 2112 ++$warnings; 2113 } 2114 } 2115 2116 if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) { 2117 dump_section($file, $section, $contents); 2118 $section = $section_default; 2119 $new_start_line = $.; 2120 $contents = ""; 2121 } 2122 2123 if (/$doc_sect/i) { # case insensitive for supported section names 2124 $newsection = $1; 2125 $newcontents = $2; 2126 2127 # map the supported section names to the canonical names 2128 if ($newsection =~ m/^description$/i) { 2129 $newsection = $section_default; 2130 } elsif ($newsection =~ m/^context$/i) { 2131 $newsection = $section_context; 2132 } elsif ($newsection =~ m/^returns?$/i) { 2133 $newsection = $section_return; 2134 } elsif ($newsection =~ m/^\@return$/) { 2135 # special: @return is a section, not a param description 2136 $newsection = $section_return; 2137 } 2138 2139 if (($contents ne "") && ($contents ne "\n")) { 2140 if (!$in_doc_sect && $verbose) { 2141 print STDERR "${file}:$.: warning: contents before sections\n"; 2142 ++$warnings; 2143 } 2144 dump_section($file, $section, $contents); 2145 $section = $section_default; 2146 } 2147 2148 $in_doc_sect = 1; 2149 $state = STATE_BODY; 2150 $contents = $newcontents; 2151 $new_start_line = $.; 2152 while (substr($contents, 0, 1) eq " ") { 2153 $contents = substr($contents, 1); 2154 } 2155 if ($contents ne "") { 2156 $contents .= "\n"; 2157 } 2158 $section = $newsection; 2159 $leading_space = undef; 2160 } elsif (/$doc_end/) { 2161 if (($contents ne "") && ($contents ne "\n")) { 2162 dump_section($file, $section, $contents); 2163 $section = $section_default; 2164 $contents = ""; 2165 } 2166 # look for doc_com + <text> + doc_end: 2167 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') { 2168 print STDERR "${file}:$.: warning: suspicious ending line: $_"; 2169 ++$warnings; 2170 } 2171 2172 $prototype = ""; 2173 $state = STATE_PROTO; 2174 $brcount = 0; 2175 $new_start_line = $. + 1; 2176 } elsif (/$doc_content/) { 2177 if ($1 eq "") { 2178 if ($section eq $section_context) { 2179 dump_section($file, $section, $contents); 2180 $section = $section_default; 2181 $contents = ""; 2182 $new_start_line = $.; 2183 $state = STATE_BODY; 2184 } else { 2185 if ($section ne $section_default) { 2186 $state = STATE_BODY_WITH_BLANK_LINE; 2187 } else { 2188 $state = STATE_BODY; 2189 } 2190 $contents .= "\n"; 2191 } 2192 } elsif ($state == STATE_BODY_MAYBE) { 2193 # Continued declaration purpose 2194 chomp($declaration_purpose); 2195 $declaration_purpose .= " " . $1; 2196 $declaration_purpose =~ s/\s+/ /g; 2197 } else { 2198 my $cont = $1; 2199 if ($section =~ m/^@/ || $section eq $section_context) { 2200 if (!defined $leading_space) { 2201 if ($cont =~ m/^(\s+)/) { 2202 $leading_space = $1; 2203 } else { 2204 $leading_space = ""; 2205 } 2206 } 2207 $cont =~ s/^$leading_space//; 2208 } 2209 $contents .= $cont . "\n"; 2210 } 2211 } else { 2212 # i dont know - bad line? ignore. 2213 print STDERR "${file}:$.: warning: bad line: $_"; 2214 ++$warnings; 2215 } 2216} 2217 2218 2219# 2220# STATE_PROTO: reading a function/whatever prototype. 2221# 2222sub process_proto($$) { 2223 my $file = shift; 2224 2225 if (/$doc_inline_oneline/) { 2226 $section = $1; 2227 $contents = $2; 2228 if ($contents ne "") { 2229 $contents .= "\n"; 2230 dump_section($file, $section, $contents); 2231 $section = $section_default; 2232 $contents = ""; 2233 } 2234 } elsif (/$doc_inline_start/) { 2235 $state = STATE_INLINE; 2236 $inline_doc_state = STATE_INLINE_NAME; 2237 } elsif ($decl_type eq 'function') { 2238 process_proto_function($_, $file); 2239 } else { 2240 process_proto_type($_, $file); 2241 } 2242} 2243 2244# 2245# STATE_DOCBLOCK: within a DOC: block. 2246# 2247sub process_docblock($$) { 2248 my $file = shift; 2249 2250 if (/$doc_end/) { 2251 dump_doc_section($file, $section, $contents); 2252 $section = $section_default; 2253 $contents = ""; 2254 $function = ""; 2255 %parameterdescs = (); 2256 %parametertypes = (); 2257 @parameterlist = (); 2258 %sections = (); 2259 @sectionlist = (); 2260 $prototype = ""; 2261 $state = STATE_NORMAL; 2262 } elsif (/$doc_content/) { 2263 if ( $1 eq "" ) { 2264 $contents .= $blankline; 2265 } else { 2266 $contents .= $1 . "\n"; 2267 } 2268 } 2269} 2270 2271# 2272# STATE_INLINE: docbook comments within a prototype. 2273# 2274sub process_inline($$) { 2275 my $file = shift; 2276 2277 # First line (state 1) needs to be a @parameter 2278 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) { 2279 $section = $1; 2280 $contents = $2; 2281 $new_start_line = $.; 2282 if ($contents ne "") { 2283 while (substr($contents, 0, 1) eq " ") { 2284 $contents = substr($contents, 1); 2285 } 2286 $contents .= "\n"; 2287 } 2288 $inline_doc_state = STATE_INLINE_TEXT; 2289 # Documentation block end */ 2290 } elsif (/$doc_inline_end/) { 2291 if (($contents ne "") && ($contents ne "\n")) { 2292 dump_section($file, $section, $contents); 2293 $section = $section_default; 2294 $contents = ""; 2295 } 2296 $state = STATE_PROTO; 2297 $inline_doc_state = STATE_INLINE_NA; 2298 # Regular text 2299 } elsif (/$doc_content/) { 2300 if ($inline_doc_state == STATE_INLINE_TEXT) { 2301 $contents .= $1 . "\n"; 2302 # nuke leading blank lines 2303 if ($contents =~ /^\s*$/) { 2304 $contents = ""; 2305 } 2306 } elsif ($inline_doc_state == STATE_INLINE_NAME) { 2307 $inline_doc_state = STATE_INLINE_ERROR; 2308 print STDERR "${file}:$.: warning: "; 2309 print STDERR "Incorrect use of kernel-doc format: $_"; 2310 ++$warnings; 2311 } 2312 } 2313} 2314 2315 2316sub process_file($) { 2317 my $file; 2318 my $initial_section_counter = $section_counter; 2319 my ($orig_file) = @_; 2320 2321 $file = map_filename($orig_file); 2322 2323 if (!open(IN_FILE,"<$file")) { 2324 print STDERR "Error: Cannot open file $file\n"; 2325 ++$errors; 2326 return; 2327 } 2328 2329 $. = 1; 2330 2331 $section_counter = 0; 2332 while (<IN_FILE>) { 2333 while (s/\\\s*$//) { 2334 $_ .= <IN_FILE>; 2335 } 2336 # Replace tabs by spaces 2337 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {}; 2338 # Hand this line to the appropriate state handler 2339 if ($state == STATE_NORMAL) { 2340 process_normal(); 2341 } elsif ($state == STATE_NAME) { 2342 process_name($file, $_); 2343 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE || 2344 $state == STATE_BODY_WITH_BLANK_LINE) { 2345 process_body($file, $_); 2346 } elsif ($state == STATE_INLINE) { # scanning for inline parameters 2347 process_inline($file, $_); 2348 } elsif ($state == STATE_PROTO) { 2349 process_proto($file, $_); 2350 } elsif ($state == STATE_DOCBLOCK) { 2351 process_docblock($file, $_); 2352 } 2353 } 2354 2355 # Make sure we got something interesting. 2356 if ($initial_section_counter == $section_counter && $ 2357 output_mode ne "none") { 2358 if ($output_selection == OUTPUT_INCLUDE) { 2359 print STDERR "${file}:1: warning: '$_' not found\n" 2360 for keys %function_table; 2361 } 2362 else { 2363 print STDERR "${file}:1: warning: no structured comments found\n"; 2364 } 2365 } 2366 close IN_FILE; 2367} 2368 2369 2370if ($output_mode eq "rst") { 2371 get_sphinx_version() if (!$sphinx_major); 2372} 2373 2374$kernelversion = get_kernel_version(); 2375 2376# generate a sequence of code that will splice in highlighting information 2377# using the s// operator. 2378for (my $k = 0; $k < @highlights; $k++) { 2379 my $pattern = $highlights[$k][0]; 2380 my $result = $highlights[$k][1]; 2381# print STDERR "scanning pattern:$pattern, highlight:($result)\n"; 2382 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n"; 2383} 2384 2385# Read the file that maps relative names to absolute names for 2386# separate source and object directories and for shadow trees. 2387if (open(SOURCE_MAP, "<.tmp_filelist.txt")) { 2388 my ($relname, $absname); 2389 while(<SOURCE_MAP>) { 2390 chop(); 2391 ($relname, $absname) = (split())[0..1]; 2392 $relname =~ s:^/+::; 2393 $source_map{$relname} = $absname; 2394 } 2395 close(SOURCE_MAP); 2396} 2397 2398if ($output_selection == OUTPUT_EXPORTED || 2399 $output_selection == OUTPUT_INTERNAL) { 2400 2401 push(@export_file_list, @ARGV); 2402 2403 foreach (@export_file_list) { 2404 chomp; 2405 process_export_file($_); 2406 } 2407} 2408 2409foreach (@ARGV) { 2410 chomp; 2411 process_file($_); 2412} 2413if ($verbose && $errors) { 2414 print STDERR "$errors errors\n"; 2415} 2416if ($verbose && $warnings) { 2417 print STDERR "$warnings warnings\n"; 2418} 2419 2420if ($Werror && $warnings) { 2421 print STDERR "$warnings warnings as Errors\n"; 2422 exit($warnings); 2423} else { 2424 exit($output_mode eq "none" ? 0 : $errors) 2425} 2426