2 # SPDX-License-Identifier: GPL-2.0
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 ##
13 ## #define enhancements by Armin Kuster <akuster@mvista.com> ##
14 ## Copyright (c) 2000 MontaVista Software, Inc. ##
16 ## This software falls under the GNU General Public License. ##
17 ## Please read the COPYING file for more information ##
19 # 18/01/2001 - Cleanups
20 # Functions prototyped as foo(void) same as foo()
21 # Stop eval'ing where we don't need to.
24 # 27/06/2001 - Allowed whitespace after initial "/**" and
25 # allowed comments before function declarations.
26 # -- Christian Kreibich <ck@whoop.org>
29 # - add perldoc documentation
30 # - Look more closely at some of the scarier bits :)
32 # 26/05/2001 - Support for separate source and object trees.
34 # Keith Owens <kaos@ocs.com.au>
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>
41 # 25/07/2012 - Added support for HTML5
42 # -- Dan Luedtke <mail@danrl.de>
45 my $message = <<"EOF";
46 Usage: $0 [OPTION ...] FILE ...
48 Read C language source or header FILEs, extract embedded documentation comments,
49 and print formatted documentation to standard output.
51 The documentation comments are identified by "/**" opening comment mark. See
52 Documentation/doc-guide/kernel-doc.rst for the documentation comment syntax.
54 Output format selection (mutually exclusive):
55 -man Output troff manual page format. This is the default.
56 -rst Output reStructuredText format.
57 -none Do not output documentation, only warnings.
59 Output format selection modifier (affects only ReST output):
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.
66 Output selection (mutually exclusive):
67 -export Only output documentation for symbols that have been
68 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
69 in any input FILE or -export-file FILE.
70 -internal Only output documentation for symbols that have NOT been
71 exported using EXPORT_SYMBOL() or EXPORT_SYMBOL_GPL()
72 in any input FILE or -export-file FILE.
73 -function NAME Only output documentation for the given function(s)
74 or DOC: section title(s). All other functions and DOC:
75 sections are ignored. May be specified multiple times.
76 -nosymbol NAME Exclude the specified symbols from the output
77 documentation. May be specified multiple times.
79 Output selection modifiers:
80 -no-doc-sections Do not output DOC: sections.
81 -enable-lineno Enable output of #define LINENO lines. Only works with
82 reStructuredText format.
83 -export-file FILE Specify an additional FILE in which to look for
84 EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL(). To be used with
85 -export or -internal. May be specified multiple times.
88 -v Verbose output, more warnings and other information.
90 -Werror Treat warnings as errors.
99 # In the following table, (...)? signifies optional structure.
100 # (...)* signifies 0 or more structure elements
102 # * function_name(:)? (- short description)?
103 # (* @parameterx: (description of parameter x)?)*
105 # * (Description:)? (Description of function)?
106 # * (section header: (section description)? )*
109 # So .. the trivial example would be:
115 # If the Description: header tag is omitted, then there must be a blank line
116 # after the last parameter specification.
119 # * my_function - does my stuff
120 # * @my_arg: its mine damnit
122 # * Does my stuff explained.
125 # or, could also use:
127 # * my_function - does my stuff
128 # * @my_arg: its mine damnit
129 # * Description: Does my stuff explained.
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.
140 # * struct my_struct - short description
142 # * @b: second member
144 # * Longer description
153 # All descriptions can be multiline, except the short function description.
155 # For really longs structs, you can also describe arguments inside the
156 # body of the struct.
159 # * struct my_struct - short description
161 # * @b: second member
163 # * Longer description
169 # * @c: This is longer description of C
171 # * You can use paragraphs to describe arguments
172 # * using this method.
177 # This should be use only for struct/enum members.
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
183 # A non-void function should have a "Return:" section describing the return
185 # Example-sections should contain the string EXAMPLE so that they are marked
186 # appropriately in DocBook.
190 # * user_function - function that can only be called in user context
191 # * @a: some argument
192 # * Context: !in_interrupt()
196 # * user_function(22);
201 # All descriptive text is further processed, scanning for the following special
202 # patterns, which are highlighted appropriately.
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.
216 my $anon_struct_union = 0;
218 # match expressions used to find embedded type information
219 my $type_constant = '\b``([^\`]+)``\b';
220 my $type_constant2 = '\%([-_\w]+)';
221 my $type_func = '(\w+)\(\)';
222 my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
223 my $type_param_ref = '([\!]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
224 my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params
225 my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params
226 my $type_env = '(\$\w+)';
227 my $type_enum = '\&(enum\s*([_\w]+))';
228 my $type_struct = '\&(struct\s*([_\w]+))';
229 my $type_typedef = '\&(typedef\s*([_\w]+))';
230 my $type_union = '\&(union\s*([_\w]+))';
231 my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
232 my $type_fallback = '\&([_\w]+)';
233 my $type_member_func = $type_member . '\(\)';
235 # Output conversion substitutions.
236 # One for each output format
238 # these are pretty rough
239 my @highlights_man = (
240 [$type_constant, "\$1"],
241 [$type_constant2, "\$1"],
242 [$type_func, "\\\\fB\$1\\\\fP"],
243 [$type_enum, "\\\\fI\$1\\\\fP"],
244 [$type_struct, "\\\\fI\$1\\\\fP"],
245 [$type_typedef, "\\\\fI\$1\\\\fP"],
246 [$type_union, "\\\\fI\$1\\\\fP"],
247 [$type_param, "\\\\fI\$1\\\\fP"],
248 [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
249 [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
250 [$type_fallback, "\\\\fI\$1\\\\fP"]
252 my $blankline_man = "";
255 my @highlights_rst = (
256 [$type_constant, "``\$1``"],
257 [$type_constant2, "``\$1``"],
258 # Note: need to escape () to avoid func matching later
259 [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
260 [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
261 [$type_fp_param, "**\$1\\\\(\\\\)**"],
262 [$type_fp_param2, "**\$1\\\\(\\\\)**"],
263 [$type_func, "\$1()"],
264 [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
265 [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
266 [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
267 [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
268 # in rst this can refer to any type
269 [$type_fallback, "\\:c\\:type\\:`\$1`"],
270 [$type_param_ref, "**\$1\$2**"]
272 my $blankline_rst = "\n";
280 my ($sphinx_major, $sphinx_minor, $sphinx_patch);
282 my $dohighlight = "";
286 my $output_mode = "rst";
287 my $output_preformatted = 0;
288 my $no_doc_sections = 0;
289 my $enable_lineno = 0;
290 my @highlights = @highlights_rst;
291 my $blankline = $blankline_rst;
292 my $modulename = "Kernel API";
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
300 my $output_selection = OUTPUT_ALL;
301 my $show_not_found = 0; # No longer used
303 my @export_file_list;
306 if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
307 (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
308 @build_time = gmtime($seconds);
310 @build_time = localtime;
313 my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
314 'July', 'August', 'September', 'October',
315 'November', 'December')[$build_time[4]] .
316 " " . ($build_time[5]+1900);
318 # Essentially these are globals.
319 # They probably want to be tidied up, made more localised or something.
320 # CAVEAT EMPTOR! Some of the others I localised may not want to be, which
321 # could cause "use of undefined value" or other bugs.
322 my ($function, %function_table, %parametertypes, $declaration_purpose);
323 my %nosymbol_table = ();
324 my $declaration_start_line;
325 my ($type, $declaration_name, $return_type);
326 my ($newsection, $newcontents, $prototype, $brcount, %source_map);
328 if (defined($ENV{'KBUILD_VERBOSE'})) {
329 $verbose = "$ENV{'KBUILD_VERBOSE'}";
332 if (defined($ENV{'KDOC_WERROR'})) {
333 $Werror = "$ENV{'KDOC_WERROR'}";
336 if (defined($ENV{'KCFLAGS'})) {
337 my $kcflags = "$ENV{'KCFLAGS'}";
339 if ($kcflags =~ /Werror/) {
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
350 my $section_counter = 0;
356 STATE_NORMAL => 0, # normal code
357 STATE_NAME => 1, # looking for function name
358 STATE_BODY_MAYBE => 2, # body - or maybe more description
359 STATE_BODY => 3, # the body of the comment
360 STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
361 STATE_PROTO => 5, # scanning prototype
362 STATE_DOCBLOCK => 6, # documentation block
363 STATE_INLINE => 7, # gathering doc outside main block
369 # Inline documentation state
371 STATE_INLINE_NA => 0, # not applicable ($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.
379 my $inline_doc_state;
381 #declaration types: can be
382 # 'function', 'struct', 'union', 'enum', 'typedef'
385 # Name of the kernel-doc identifier for non-DOC markups
388 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
390 my $doc_com = '\s*\*\s*';
391 my $doc_com_body = '\s*\* ?';
392 my $doc_decl = $doc_com . '(\w+)';
393 # @params and a strictly limited set of supported section names
398 # while trying to not match literal block starts like "example::"
400 my $doc_sect = $doc_com .
401 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:([^:].*)?$';
402 my $doc_content = $doc_com_body . '(.*)';
403 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
404 my $doc_inline_start = '^\s*/\*\*\s*$';
405 my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
406 my $doc_inline_end = '^\s*\*/\s*$';
407 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
408 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
411 my %parameterdesc_start_lines;
415 my %section_start_lines;
420 my $new_start_line = 0;
422 # the canonical section names. see also $doc_sect above.
423 my $section_default = "Description"; # default section
424 my $section_intro = "Introduction";
425 my $section = $section_default;
426 my $section_context = "Context";
427 my $section_return = "Return";
429 my $undescribed = "-- undescribed --";
433 while ($ARGV[0] =~ m/^--?(.*)/) {
437 $output_mode = "man";
438 @highlights = @highlights_man;
439 $blankline = $blankline_man;
440 } elsif ($cmd eq "rst") {
441 $output_mode = "rst";
442 @highlights = @highlights_rst;
443 $blankline = $blankline_rst;
444 } elsif ($cmd eq "none") {
445 $output_mode = "none";
446 } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
447 $modulename = shift @ARGV;
448 } elsif ($cmd eq "function") { # to only output specific functions
449 $output_selection = OUTPUT_INCLUDE;
450 $function = shift @ARGV;
451 $function_table{$function} = 1;
452 } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
453 my $symbol = shift @ARGV;
454 $nosymbol_table{$symbol} = 1;
455 } elsif ($cmd eq "export") { # only exported symbols
456 $output_selection = OUTPUT_EXPORTED;
457 %function_table = ();
458 } elsif ($cmd eq "internal") { # only non-exported symbols
459 $output_selection = OUTPUT_INTERNAL;
460 %function_table = ();
461 } elsif ($cmd eq "export-file") {
462 my $file = shift @ARGV;
463 push(@export_file_list, $file);
464 } elsif ($cmd eq "v") {
466 } elsif ($cmd eq "Werror") {
468 } elsif (($cmd eq "h") || ($cmd eq "help")) {
470 } elsif ($cmd eq 'no-doc-sections') {
471 $no_doc_sections = 1;
472 } elsif ($cmd eq 'enable-lineno') {
474 } elsif ($cmd eq 'show-not-found') {
475 $show_not_found = 1; # A no-op but don't fail
476 } elsif ($cmd eq "sphinx-version") {
477 my $ver_string = shift @ARGV;
478 if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) {
481 $sphinx_minor = substr($2,1);
486 $sphinx_patch = substr($3,1)
491 die "Sphinx version should either major.minor or major.minor.patch format\n";
499 # continue execution near EOF;
501 # The C domain dialect changed on Sphinx 3. So, we need to check the
502 # version in order to produce the right tags.
505 foreach(split(/:/, $ENV{PATH})) {
506 return "$_/$_[0]" if(-x "$_/$_[0]");
510 sub get_sphinx_version()
514 my $cmd = "sphinx-build";
515 if (!findprog($cmd)) {
516 my $cmd = "sphinx-build3";
517 if (!findprog($cmd)) {
521 printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n",
522 $sphinx_major, $sphinx_minor, $sphinx_patch;
527 open IN, "$cmd --version 2>&1 |";
529 if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
535 # Sphinx 1.2.x uses a different format
536 if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
546 # get kernel version from env
547 sub get_kernel_version() {
548 my $version = 'unknown kernel version';
550 if (defined($ENV{'KERNELVERSION'})) {
551 $version = $ENV{'KERNELVERSION'};
559 if ($enable_lineno && defined($lineno)) {
560 print "#define LINENO " . $lineno . "\n";
564 # dumps section contents to arrays/hashes intended for that purpose.
569 my $contents = join "\n", @_;
571 if ($name =~ m/$type_param/) {
573 $parameterdescs{$name} = $contents;
574 $sectcheck = $sectcheck . $name . " ";
575 $parameterdesc_start_lines{$name} = $new_start_line;
577 } elsif ($name eq "@\.\.\.") {
579 $parameterdescs{$name} = $contents;
580 $sectcheck = $sectcheck . $name . " ";
581 $parameterdesc_start_lines{$name} = $new_start_line;
584 if (defined($sections{$name}) && ($sections{$name} ne "")) {
585 # Only warn on user specified duplicate section names.
586 if ($name ne $section_default) {
587 print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
590 $sections{$name} .= $contents;
592 $sections{$name} = $contents;
593 push @sectionlist, $name;
594 $section_start_lines{$name} = $new_start_line;
601 # dump DOC: section after checking that it should go out
603 sub dump_doc_section {
606 my $contents = join "\n", @_;
608 if ($no_doc_sections) {
612 return if (defined($nosymbol_table{$name}));
614 if (($output_selection == OUTPUT_ALL) ||
615 (($output_selection == OUTPUT_INCLUDE) &&
616 defined($function_table{$name})))
618 dump_section($file, $name, $contents);
619 output_blockhead({'sectionlist' => \@sectionlist,
620 'sections' => \%sections,
621 'module' => $modulename,
622 'content-only' => ($output_selection != OUTPUT_ALL), });
629 # parameterdescs, a hash.
630 # function => "function name"
631 # parameterlist => @list of parameters
632 # parameterdescs => %parameter descriptions
633 # sectionlist => @list of sections
634 # sections => %section descriptions
637 sub output_highlight {
638 my $contents = join "\n",@_;
642 # if (!defined $contents) {
644 # confess "output_highlight got called with no args?\n";
647 # print STDERR "contents b4:$contents\n";
650 # print STDERR "contents af:$contents\n";
652 foreach $line (split "\n", $contents) {
653 if (! $output_preformatted) {
657 if (! $output_preformatted) {
658 print $lineprefix, $blankline;
661 if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
664 print $lineprefix, $line;
672 # output function in man
673 sub output_function_man(%) {
675 my ($parameter, $section);
678 print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
681 print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
683 print ".SH SYNOPSIS\n";
684 if ($args{'functiontype'} ne "") {
685 print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
687 print ".B \"" . $args{'function'} . "\n";
692 foreach my $parameter (@{$args{'parameterlist'}}) {
693 if ($count == $#{$args{'parameterlist'}}) {
696 $type = $args{'parametertypes'}{$parameter};
697 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
698 # pointer-to-function
699 print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
701 $type =~ s/([^\*])$/$1 /;
702 print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
708 print ".SH ARGUMENTS\n";
709 foreach $parameter (@{$args{'parameterlist'}}) {
710 my $parameter_name = $parameter;
711 $parameter_name =~ s/\[.*//;
713 print ".IP \"" . $parameter . "\" 12\n";
714 output_highlight($args{'parameterdescs'}{$parameter_name});
716 foreach $section (@{$args{'sectionlist'}}) {
717 print ".SH \"", uc $section, "\"\n";
718 output_highlight($args{'sections'}{$section});
724 sub output_enum_man(%) {
726 my ($parameter, $section);
729 print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
732 print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
734 print ".SH SYNOPSIS\n";
735 print "enum " . $args{'enum'} . " {\n";
737 foreach my $parameter (@{$args{'parameterlist'}}) {
738 print ".br\n.BI \" $parameter\"\n";
739 if ($count == $#{$args{'parameterlist'}}) {
749 print ".SH Constants\n";
750 foreach $parameter (@{$args{'parameterlist'}}) {
751 my $parameter_name = $parameter;
752 $parameter_name =~ s/\[.*//;
754 print ".IP \"" . $parameter . "\" 12\n";
755 output_highlight($args{'parameterdescs'}{$parameter_name});
757 foreach $section (@{$args{'sectionlist'}}) {
758 print ".SH \"$section\"\n";
759 output_highlight($args{'sections'}{$section});
764 # output struct in man
765 sub output_struct_man(%) {
767 my ($parameter, $section);
769 print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
772 print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
774 my $declaration = $args{'definition'};
775 $declaration =~ s/\t/ /g;
776 $declaration =~ s/\n/"\n.br\n.BI \"/g;
777 print ".SH SYNOPSIS\n";
778 print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
779 print ".BI \"$declaration\n};\n.br\n\n";
781 print ".SH Members\n";
782 foreach $parameter (@{$args{'parameterlist'}}) {
783 ($parameter =~ /^#/) && next;
785 my $parameter_name = $parameter;
786 $parameter_name =~ s/\[.*//;
788 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
789 print ".IP \"" . $parameter . "\" 12\n";
790 output_highlight($args{'parameterdescs'}{$parameter_name});
792 foreach $section (@{$args{'sectionlist'}}) {
793 print ".SH \"$section\"\n";
794 output_highlight($args{'sections'}{$section});
799 # output typedef in man
800 sub output_typedef_man(%) {
802 my ($parameter, $section);
804 print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
807 print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
809 foreach $section (@{$args{'sectionlist'}}) {
810 print ".SH \"$section\"\n";
811 output_highlight($args{'sections'}{$section});
815 sub output_blockhead_man(%) {
817 my ($parameter, $section);
820 print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
822 foreach $section (@{$args{'sectionlist'}}) {
823 print ".SH \"$section\"\n";
824 output_highlight($args{'sections'}{$section});
829 # output in restructured text
833 # This could use some work; it's used to output the DOC: sections, and
834 # starts by putting out the name of the doc section itself, but that tends
835 # to duplicate a header already in the template file.
837 sub output_blockhead_rst(%) {
839 my ($parameter, $section);
841 foreach $section (@{$args{'sectionlist'}}) {
842 next if (defined($nosymbol_table{$section}));
844 if ($output_selection != OUTPUT_INCLUDE) {
845 print ".. _$section:\n\n";
846 print "**$section**\n\n";
848 print_lineno($section_start_lines{$section});
849 output_highlight_rst($args{'sections'}{$section});
855 # Apply the RST highlights to a sub-block of text.
857 sub highlight_block($) {
858 # The dohighlight kludge requires the text be called $contents
859 my $contents = shift;
866 # Regexes used only here.
868 my $sphinx_literal = '^[^.].*::$';
869 my $sphinx_cblock = '^\.\.\ +code-block::';
871 sub output_highlight_rst {
872 my $input = join "\n",@_;
879 foreach $line (split "\n",$input) {
881 # If we're in a literal block, see if we should drop out
882 # of it. Otherwise pass the line straight through unmunged.
885 if (! ($line =~ /^\s*$/)) {
887 # If this is the first non-blank line in a literal
888 # block we need to figure out what the proper indent is.
890 if ($litprefix eq "") {
892 $litprefix = '^' . $1;
893 $output .= $line . "\n";
894 } elsif (! ($line =~ /$litprefix/)) {
897 $output .= $line . "\n";
900 $output .= $line . "\n";
904 # Not in a literal block (or just dropped out)
907 $block .= $line . "\n";
908 if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
911 $output .= highlight_block($block);
918 $output .= highlight_block($block);
920 foreach $line (split "\n", $output) {
921 print $lineprefix . $line . "\n";
925 sub output_function_rst(%) {
927 my ($parameter, $section);
928 my $oldprefix = $lineprefix;
932 if ($sphinx_major < 3) {
933 if ($args{'typedef'}) {
934 print ".. c:type:: ". $args{'function'} . "\n\n";
935 print_lineno($declaration_start_line);
936 print " **Typedef**: ";
938 output_highlight_rst($args{'purpose'});
939 $start = "\n\n**Syntax**\n\n ``";
942 print ".. c:function:: ";
945 if ($args{'typedef'} || $args{'functiontype'} eq "") {
947 print ".. c:macro:: ". $args{'function'} . "\n\n";
949 print ".. c:function:: ";
952 if ($args{'typedef'}) {
953 print_lineno($declaration_start_line);
954 print " **Typedef**: ";
956 output_highlight_rst($args{'purpose'});
957 $start = "\n\n**Syntax**\n\n ``";
959 print "``" if ($is_macro);
962 if ($args{'functiontype'} ne "") {
963 $start .= $args{'functiontype'} . " " . $args{'function'} . " (";
965 $start .= $args{'function'} . " (";
970 foreach my $parameter (@{$args{'parameterlist'}}) {
975 $type = $args{'parametertypes'}{$parameter};
977 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
978 # pointer-to-function
979 print $1 . $parameter . ") (" . $2 . ")";
989 if (!$args{'typedef'}) {
990 print_lineno($declaration_start_line);
992 output_highlight_rst($args{'purpose'});
996 print "**Parameters**\n\n";
998 foreach $parameter (@{$args{'parameterlist'}}) {
999 my $parameter_name = $parameter;
1000 $parameter_name =~ s/\[.*//;
1001 $type = $args{'parametertypes'}{$parameter};
1004 print "``$type``\n";
1006 print "``$parameter``\n";
1009 print_lineno($parameterdesc_start_lines{$parameter_name});
1011 if (defined($args{'parameterdescs'}{$parameter_name}) &&
1012 $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
1013 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1015 print " *undescribed*\n";
1020 $lineprefix = $oldprefix;
1021 output_section_rst(@_);
1024 sub output_section_rst(%) {
1025 my %args = %{$_[0]};
1027 my $oldprefix = $lineprefix;
1030 foreach $section (@{$args{'sectionlist'}}) {
1031 print "**$section**\n\n";
1032 print_lineno($section_start_lines{$section});
1033 output_highlight_rst($args{'sections'}{$section});
1037 $lineprefix = $oldprefix;
1040 sub output_enum_rst(%) {
1041 my %args = %{$_[0]};
1043 my $oldprefix = $lineprefix;
1046 if ($sphinx_major < 3) {
1047 my $name = "enum " . $args{'enum'};
1048 print "\n\n.. c:type:: " . $name . "\n\n";
1050 my $name = $args{'enum'};
1051 print "\n\n.. c:enum:: " . $name . "\n\n";
1053 print_lineno($declaration_start_line);
1055 output_highlight_rst($args{'purpose'});
1058 print "**Constants**\n\n";
1060 foreach $parameter (@{$args{'parameterlist'}}) {
1061 print "``$parameter``\n";
1062 if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
1063 output_highlight_rst($args{'parameterdescs'}{$parameter});
1065 print " *undescribed*\n";
1070 $lineprefix = $oldprefix;
1071 output_section_rst(@_);
1074 sub output_typedef_rst(%) {
1075 my %args = %{$_[0]};
1077 my $oldprefix = $lineprefix;
1080 if ($sphinx_major < 3) {
1081 $name = "typedef " . $args{'typedef'};
1083 $name = $args{'typedef'};
1085 print "\n\n.. c:type:: " . $name . "\n\n";
1086 print_lineno($declaration_start_line);
1088 output_highlight_rst($args{'purpose'});
1091 $lineprefix = $oldprefix;
1092 output_section_rst(@_);
1095 sub output_struct_rst(%) {
1096 my %args = %{$_[0]};
1098 my $oldprefix = $lineprefix;
1100 if ($sphinx_major < 3) {
1101 my $name = $args{'type'} . " " . $args{'struct'};
1102 print "\n\n.. c:type:: " . $name . "\n\n";
1104 my $name = $args{'struct'};
1105 if ($args{'type'} eq 'union') {
1106 print "\n\n.. c:union:: " . $name . "\n\n";
1108 print "\n\n.. c:struct:: " . $name . "\n\n";
1111 print_lineno($declaration_start_line);
1113 output_highlight_rst($args{'purpose'});
1116 print "**Definition**\n\n";
1118 my $declaration = $args{'definition'};
1119 $declaration =~ s/\t/ /g;
1120 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n";
1122 print "**Members**\n\n";
1124 foreach $parameter (@{$args{'parameterlist'}}) {
1125 ($parameter =~ /^#/) && next;
1127 my $parameter_name = $parameter;
1128 $parameter_name =~ s/\[.*//;
1130 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1131 $type = $args{'parametertypes'}{$parameter};
1132 print_lineno($parameterdesc_start_lines{$parameter_name});
1133 print "``" . $parameter . "``\n";
1134 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1139 $lineprefix = $oldprefix;
1140 output_section_rst(@_);
1143 ## none mode output functions
1145 sub output_function_none(%) {
1148 sub output_enum_none(%) {
1151 sub output_typedef_none(%) {
1154 sub output_struct_none(%) {
1157 sub output_blockhead_none(%) {
1161 # generic output function for all types (function, struct/union, typedef, enum);
1162 # calls the generated, variable output_ function name based on
1163 # functype and output_mode
1164 sub output_declaration {
1167 my $functype = shift;
1168 my $func = "output_${functype}_$output_mode";
1170 return if (defined($nosymbol_table{$name}));
1172 if (($output_selection == OUTPUT_ALL) ||
1173 (($output_selection == OUTPUT_INCLUDE ||
1174 $output_selection == OUTPUT_EXPORTED) &&
1175 defined($function_table{$name})) ||
1176 ($output_selection == OUTPUT_INTERNAL &&
1177 !($functype eq "function" && defined($function_table{$name}))))
1185 # generic output function - calls the right one based on current output mode.
1186 sub output_blockhead {
1188 my $func = "output_blockhead_" . $output_mode;
1194 # takes a declaration (struct, union, enum, typedef) and
1195 # invokes the right handler. NOT called for functions.
1196 sub dump_declaration($$) {
1198 my ($prototype, $file) = @_;
1199 my $func = "dump_" . $decl_type;
1203 sub dump_union($$) {
1207 sub dump_struct($$) {
1212 my $type = qr{struct|union};
1213 # For capturing struct/union definition body, i.e. "{members*}qualifiers*"
1214 my $definition_body = qr{\{(.*)\}(?:\s*(?:__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*};
1216 if ($x =~ /($type)\s+(\w+)\s*$definition_body/) {
1218 $declaration_name = $2;
1220 } elsif ($x =~ /typedef\s+($type)\s*$definition_body\s*(\w+)\s*;/) {
1222 $declaration_name = $3;
1227 if ($identifier ne $declaration_name) {
1228 print STDERR "${file}:$.: warning: expecting prototype for $decl_type $identifier. Prototype was for $decl_type $declaration_name instead\n";
1232 # ignore members marked private:
1233 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
1234 $members =~ s/\/\*\s*private:.*//gosi;
1236 $members =~ s/\/\*.*?\*\///gos;
1238 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
1239 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
1240 $members =~ s/\s*__packed\s*/ /gos;
1241 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
1242 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
1243 $members =~ s/\s*____cacheline_aligned/ /gos;
1245 # replace DECLARE_BITMAP
1246 $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
1247 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
1248 # replace DECLARE_HASHTABLE
1249 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
1250 # replace DECLARE_KFIFO
1251 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1252 # replace DECLARE_KFIFO_PTR
1253 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1255 my $declaration = $members;
1257 # Split nested struct/union elements as newer ones
1258 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
1263 foreach my $id(split /,/, $ids) {
1264 $newmember .= "$maintype $id; ";
1267 $id =~ s/^\s*\**(\S+)\s*/$1/;
1268 foreach my $arg (split /;/, $content) {
1269 next if ($arg =~ m/^\s*$/);
1270 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
1271 # pointer-to-function
1276 if ($id =~ m/^\s*$/) {
1277 # anonymous struct/union
1278 $newmember .= "$type$name$extra; ";
1280 $newmember .= "$type$id.$name$extra; ";
1288 $arg =~ s/:\s*\d+\s*//g;
1290 $arg =~ s/\[.*\]//g;
1291 # The type may have multiple words,
1292 # and multiple IDs can be defined, like:
1293 # const struct foo, *bar, foobar
1294 # So, we remove spaces when parsing the
1295 # names, in order to match just names
1296 # and commas for the names
1297 $arg =~ s/\s*,\s*/,/g;
1298 if ($arg =~ m/(.*)\s+([\S+,]+)/) {
1302 $newmember .= "$arg; ";
1305 foreach my $name (split /,/, $names) {
1306 $name =~ s/^\s*\**(\S+)\s*/$1/;
1307 next if (($name =~ m/^\s*$/));
1308 if ($id =~ m/^\s*$/) {
1309 # anonymous struct/union
1310 $newmember .= "$type $name; ";
1312 $newmember .= "$type $id.$name; ";
1318 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
1321 # Ignore other nested elements, like enums
1322 $members =~ s/(\{[^\{\}]*\})//g;
1324 create_parameterlist($members, ';', $file, $declaration_name);
1325 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
1327 # Adjust declaration for better display
1328 $declaration =~ s/([\{;])/$1\n/g;
1329 $declaration =~ s/\}\s+;/};/g;
1330 # Better handle inlined enums
1331 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
1333 my @def_args = split /\n/, $declaration;
1336 foreach my $clause (@def_args) {
1337 $clause =~ s/^\s+//;
1338 $clause =~ s/\s+$//;
1339 $clause =~ s/\s+/ /;
1341 $level-- if ($clause =~ m/(\})/ && $level > 1);
1342 if (!($clause =~ m/^\s*#/)) {
1343 $declaration .= "\t" x $level;
1345 $declaration .= "\t" . $clause . "\n";
1346 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
1348 output_declaration($declaration_name,
1350 {'struct' => $declaration_name,
1351 'module' => $modulename,
1352 'definition' => $declaration,
1353 'parameterlist' => \@parameterlist,
1354 'parameterdescs' => \%parameterdescs,
1355 'parametertypes' => \%parametertypes,
1356 'sectionlist' => \@sectionlist,
1357 'sections' => \%sections,
1358 'purpose' => $declaration_purpose,
1359 'type' => $decl_type
1363 print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
1369 sub show_warnings($$) {
1370 my $functype = shift;
1373 return 0 if (defined($nosymbol_table{$name}));
1375 return 1 if ($output_selection == OUTPUT_ALL);
1377 if ($output_selection == OUTPUT_EXPORTED) {
1378 if (defined($function_table{$name})) {
1384 if ($output_selection == OUTPUT_INTERNAL) {
1385 if (!($functype eq "function" && defined($function_table{$name}))) {
1391 if ($output_selection == OUTPUT_INCLUDE) {
1392 if (defined($function_table{$name})) {
1398 die("Please add the new output type at show_warnings()");
1407 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1408 # strip #define macros inside enums
1409 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
1411 if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
1412 $declaration_name = $2;
1414 } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
1415 $declaration_name = $1;
1420 if ($identifier ne $declaration_name) {
1421 if ($identifier eq "") {
1422 print STDERR "${file}:$.: warning: wrong kernel-doc identifier on line:\n";
1424 print STDERR "${file}:$.: warning: expecting prototype for enum $identifier. Prototype was for enum $declaration_name instead\n";
1428 $declaration_name = "(anonymous)" if ($declaration_name eq "");
1432 $members =~ s/\s+$//;
1434 foreach my $arg (split ',', $members) {
1435 $arg =~ s/^\s*(\w+).*/$1/;
1436 push @parameterlist, $arg;
1437 if (!$parameterdescs{$arg}) {
1438 $parameterdescs{$arg} = $undescribed;
1439 if (show_warnings("enum", $declaration_name)) {
1440 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n";
1443 $_members{$arg} = 1;
1446 while (my ($k, $v) = each %parameterdescs) {
1447 if (!exists($_members{$k})) {
1448 if (show_warnings("enum", $declaration_name)) {
1449 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n";
1454 output_declaration($declaration_name,
1456 {'enum' => $declaration_name,
1457 'module' => $modulename,
1458 'parameterlist' => \@parameterlist,
1459 'parameterdescs' => \%parameterdescs,
1460 'sectionlist' => \@sectionlist,
1461 'sections' => \%sections,
1462 'purpose' => $declaration_purpose
1465 print STDERR "${file}:$.: error: Cannot parse enum!\n";
1470 my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x;
1471 my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
1472 my $typedef_args = qr { \s*\((.*)\); }x;
1474 my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
1475 my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
1477 sub dump_typedef($$) {
1481 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1483 # Parse function typedef prototypes
1484 if ($x =~ $typedef1 || $x =~ $typedef2) {
1486 $declaration_name = $2;
1488 $return_type =~ s/^\s+//;
1490 if ($identifier ne $declaration_name) {
1491 print STDERR "${file}:$.: warning: expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n";
1495 create_parameterlist($args, ',', $file, $declaration_name);
1497 output_declaration($declaration_name,
1499 {'function' => $declaration_name,
1501 'module' => $modulename,
1502 'functiontype' => $return_type,
1503 'parameterlist' => \@parameterlist,
1504 'parameterdescs' => \%parameterdescs,
1505 'parametertypes' => \%parametertypes,
1506 'sectionlist' => \@sectionlist,
1507 'sections' => \%sections,
1508 'purpose' => $declaration_purpose
1513 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1514 $x =~ s/\(*.\)\s*;$/;/;
1515 $x =~ s/\[*.\]\s*;$/;/;
1518 if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1519 $declaration_name = $1;
1521 if ($identifier ne $declaration_name) {
1522 print STDERR "${file}:$.: warning: expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n";
1526 output_declaration($declaration_name,
1528 {'typedef' => $declaration_name,
1529 'module' => $modulename,
1530 'sectionlist' => \@sectionlist,
1531 'sections' => \%sections,
1532 'purpose' => $declaration_purpose
1536 print STDERR "${file}:$.: error: Cannot parse typedef!\n";
1541 sub save_struct_actual($) {
1544 # strip all spaces from the actual param so that it looks like one string item
1545 $actual =~ s/\s*//g;
1546 $struct_actual = $struct_actual . $actual . " ";
1549 sub create_parameterlist($$$$) {
1551 my $splitter = shift;
1553 my $declaration_name = shift;
1557 # temporarily replace commas inside function pointer definition
1558 while ($args =~ /(\([^\),]+),/) {
1559 $args =~ s/(\([^\),]+),/$1#/g;
1562 foreach my $arg (split($splitter, $args)) {
1564 $arg =~ s/\/\*.*\*\///;
1565 # strip leading/trailing spaces
1571 # Treat preprocessor directive as a typeless variable just to fill
1572 # corresponding data structures "correctly". Catch it later in
1574 push_parameter($arg, "", "", $file);
1575 } elsif ($arg =~ m/\(.+\)\s*\(/) {
1576 # pointer-to-function
1578 $arg =~ m/[^\(]+\(\*?\s*([\w\[\]\.]*)\s*\)/;
1581 $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1582 save_struct_actual($param);
1583 push_parameter($param, $type, $arg, $file, $declaration_name);
1585 $arg =~ s/\s*:\s*/:/g;
1586 $arg =~ s/\s*\[/\[/g;
1588 my @args = split('\s*,\s*', $arg);
1589 if ($args[0] =~ m/\*/) {
1590 $args[0] =~ s/(\*+)\s*/ $1/;
1594 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1596 push(@first_arg, split('\s+', $1));
1597 push(@first_arg, $2);
1599 @first_arg = split('\s+', shift @args);
1602 unshift(@args, pop @first_arg);
1603 $type = join " ", @first_arg;
1605 foreach $param (@args) {
1606 if ($param =~ m/^(\*+)\s*(.*)/) {
1607 save_struct_actual($2);
1609 push_parameter($2, "$type $1", $arg, $file, $declaration_name);
1611 elsif ($param =~ m/(.*?):(\d+)/) {
1612 if ($type ne "") { # skip unnamed bit-fields
1613 save_struct_actual($1);
1614 push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
1618 save_struct_actual($param);
1619 push_parameter($param, $type, $arg, $file, $declaration_name);
1626 sub push_parameter($$$$$) {
1629 my $org_arg = shift;
1631 my $declaration_name = shift;
1633 if (($anon_struct_union == 1) && ($type eq "") &&
1635 return; # ignore the ending }; from anon. struct/union
1638 $anon_struct_union = 0;
1639 $param =~ s/[\[\)].*//;
1641 if ($type eq "" && $param =~ /\.\.\.$/)
1643 if (!$param =~ /\w\.\.\.$/) {
1644 # handles unnamed variable parameters
1647 elsif ($param =~ /\w\.\.\.$/) {
1648 # for named variable parameters of the form `x...`, remove the dots
1649 $param =~ s/\.\.\.$//;
1651 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1652 $parameterdescs{$param} = "variable arguments";
1655 elsif ($type eq "" && ($param eq "" or $param eq "void"))
1658 $parameterdescs{void} = "no arguments";
1660 elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1661 # handle unnamed (anonymous) union or struct:
1664 $param = "{unnamed_" . $param . "}";
1665 $parameterdescs{$param} = "anonymous\n";
1666 $anon_struct_union = 1;
1669 # warn if parameter has no description
1670 # (but ignore ones starting with # as these are not parameters
1671 # but inline preprocessor statements);
1672 # Note: It will also ignore void params and unnamed structs/unions
1673 if (!defined $parameterdescs{$param} && $param !~ /^#/) {
1674 $parameterdescs{$param} = $undescribed;
1676 if (show_warnings($type, $declaration_name) && $param !~ /\./) {
1678 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
1683 # strip spaces from $param so that it is one continuous string
1684 # on @parameterlist;
1685 # this fixes a problem where check_sections() cannot find
1686 # a parameter like "addr[6 + 2]" because it actually appears
1687 # as "addr[6", "+", "2]" on the parameter list;
1688 # but it's better to maintain the param string unchanged for output,
1689 # so just weaken the string compare in check_sections() to ignore
1690 # "[blah" in a parameter string;
1691 ###$param =~ s/\s*//g;
1692 push @parameterlist, $param;
1693 $org_arg =~ s/\s\s+/ /g;
1694 $parametertypes{$param} = $org_arg;
1697 sub check_sections($$$$$) {
1698 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
1699 my @sects = split ' ', $sectcheck;
1700 my @prms = split ' ', $prmscheck;
1703 my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
1705 foreach $sx (0 .. $#sects) {
1707 foreach $px (0 .. $#prms) {
1708 $prm_clean = $prms[$px];
1709 $prm_clean =~ s/\[.*\]//;
1710 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1711 # ignore array size in a parameter string;
1712 # however, the original param string may contain
1713 # spaces, e.g.: addr[6 + 2]
1714 # and this appears in @prms as "addr[6" since the
1715 # parameter list is split at spaces;
1716 # hence just ignore "[..." for the sections check;
1717 $prm_clean =~ s/\[.*//;
1719 ##$prm_clean =~ s/^\**//;
1720 if ($prm_clean eq $sects[$sx]) {
1726 if ($decl_type eq "function") {
1727 print STDERR "${file}:$.: warning: " .
1728 "Excess function parameter " .
1730 "description in '$decl_name'\n";
1738 # Checks the section describing the return value of a function.
1739 sub check_return_section {
1741 my $declaration_name = shift;
1742 my $return_type = shift;
1744 # Ignore an empty return type (It's a macro)
1745 # Ignore functions with a "void" return type. (But don't ignore "void *")
1746 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
1750 if (!defined($sections{$section_return}) ||
1751 $sections{$section_return} eq "") {
1752 print STDERR "${file}:$.: warning: " .
1753 "No description found for return value of " .
1754 "'$declaration_name'\n";
1760 # takes a function prototype and the name of the current file being
1761 # processed and spits out all the details stored in the global
1763 sub dump_function($$) {
1764 my $prototype = shift;
1768 print_lineno($new_start_line);
1770 $prototype =~ s/^static +//;
1771 $prototype =~ s/^extern +//;
1772 $prototype =~ s/^asmlinkage +//;
1773 $prototype =~ s/^inline +//;
1774 $prototype =~ s/^__inline__ +//;
1775 $prototype =~ s/^__inline +//;
1776 $prototype =~ s/^__always_inline +//;
1777 $prototype =~ s/^noinline +//;
1778 $prototype =~ s/__init +//;
1779 $prototype =~ s/__init_or_module +//;
1780 $prototype =~ s/__deprecated +//;
1781 $prototype =~ s/__flatten +//;
1782 $prototype =~ s/__meminit +//;
1783 $prototype =~ s/__must_check +//;
1784 $prototype =~ s/__weak +//;
1785 $prototype =~ s/__sched +//;
1786 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
1787 my $define = $prototype =~ s/^#\s*define\s+//; #ak added
1788 $prototype =~ s/__attribute_const__ +//;
1789 $prototype =~ s/__attribute__\s*\(\(
1791 [\w\s]++ # attribute name
1792 (?:\([^)]*+\))? # attribute arguments
1793 \s*+,? # optional comma at the end
1797 # Yes, this truly is vile. We are looking for:
1798 # 1. Return type (may be nothing if we're looking at a macro)
1800 # 3. Function parameters.
1802 # All the while we have to watch out for function pointer parameters
1803 # (which IIRC is what the two sections are for), C types (these
1804 # regexps don't even start to express all the possibilities), and
1807 # If you mess with these regexps, it's a good idea to check that
1808 # the following functions' documentation still comes out right:
1809 # - parport_register_device (function pointer parameters)
1810 # - atomic_set (macro)
1811 # - pci_match_device, __copy_to_user (long return type)
1813 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
1814 # This is an object-like macro, it has no return type and no parameter
1816 # Function-like macros are not allowed to have spaces between
1817 # declaration_name and opening parenthesis (notice the \s+).
1819 $declaration_name = $2;
1821 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1822 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1823 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1824 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1825 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1826 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1827 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1828 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1829 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1830 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1831 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1832 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1833 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1834 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1835 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1836 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1837 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) {
1839 $declaration_name = $2;
1842 create_parameterlist($args, ',', $file, $declaration_name);
1844 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
1848 if ($identifier ne $declaration_name) {
1849 print STDERR "${file}:$.: warning: expecting prototype for $identifier(). Prototype was for $declaration_name() instead\n";
1853 my $prms = join " ", @parameterlist;
1854 check_sections($file, $declaration_name, "function", $sectcheck, $prms);
1856 # This check emits a lot of warnings at the moment, because many
1857 # functions don't have a 'Return' doc section. So until the number
1858 # of warnings goes sufficiently down, the check is only performed in
1860 # TODO: always perform the check.
1861 if ($verbose && !$noret) {
1862 check_return_section($file, $declaration_name, $return_type);
1865 # The function parser can be called with a typedef parameter.
1867 if ($return_type =~ /typedef/) {
1868 output_declaration($declaration_name,
1870 {'function' => $declaration_name,
1872 'module' => $modulename,
1873 'functiontype' => $return_type,
1874 'parameterlist' => \@parameterlist,
1875 'parameterdescs' => \%parameterdescs,
1876 'parametertypes' => \%parametertypes,
1877 'sectionlist' => \@sectionlist,
1878 'sections' => \%sections,
1879 'purpose' => $declaration_purpose
1882 output_declaration($declaration_name,
1884 {'function' => $declaration_name,
1885 'module' => $modulename,
1886 'functiontype' => $return_type,
1887 'parameterlist' => \@parameterlist,
1888 'parameterdescs' => \%parameterdescs,
1889 'parametertypes' => \%parametertypes,
1890 'sectionlist' => \@sectionlist,
1891 'sections' => \%sections,
1892 'purpose' => $declaration_purpose
1899 %parameterdescs = ();
1900 %parametertypes = ();
1901 @parameterlist = ();
1905 $struct_actual = "";
1908 $state = STATE_NORMAL;
1909 $inline_doc_state = STATE_INLINE_NA;
1912 sub tracepoint_munge($) {
1914 my $tracepointname = 0;
1915 my $tracepointargs = 0;
1917 if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1918 $tracepointname = $1;
1920 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1921 $tracepointname = $1;
1923 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1924 $tracepointname = $2;
1926 $tracepointname =~ s/^\s+//; #strip leading whitespace
1927 if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1928 $tracepointargs = $1;
1930 if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1931 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
1934 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1935 $identifier = "trace_$identifier";
1939 sub syscall_munge() {
1942 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
1943 ## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1944 if ($prototype =~ m/SYSCALL_DEFINE0/) {
1946 ## $prototype = "long sys_$1(void)";
1949 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1950 if ($prototype =~ m/long (sys_.*?),/) {
1951 $prototype =~ s/,/\(/;
1953 $prototype =~ s/\)/\(void\)/;
1956 # now delete all of the odd-number commas in $prototype
1957 # so that arg types & arg names don't have a comma between them
1959 my $len = length($prototype);
1961 $len = 0; # skip the for-loop
1963 for (my $ix = 0; $ix < $len; $ix++) {
1964 if (substr($prototype, $ix, 1) eq ',') {
1966 if ($count % 2 == 1) {
1967 substr($prototype, $ix, 1) = ' ';
1973 sub process_proto_function($$) {
1977 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1979 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1982 elsif ($x =~ /([^\{]*)/) {
1986 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1987 $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1988 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1989 $prototype =~ s@^\s+@@gos; # strip leading spaces
1991 # Handle prototypes for function pointers like:
1992 # int (*pcs_config)(struct foo)
1993 $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
1995 if ($prototype =~ /SYSCALL_DEFINE/) {
1998 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1999 $prototype =~ /DEFINE_SINGLE_EVENT/)
2001 tracepoint_munge($file);
2003 dump_function($prototype, $file);
2008 sub process_proto_type($$) {
2012 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
2013 $x =~ s@^\s+@@gos; # strip leading spaces
2014 $x =~ s@\s+$@@gos; # strip trailing spaces
2015 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
2018 # To distinguish preprocessor directive from regular declaration later.
2023 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
2024 if( length $prototype ) {
2027 $prototype .= $1 . $2;
2028 ($2 eq '{') && $brcount++;
2029 ($2 eq '}') && $brcount--;
2030 if (($2 eq ';') && ($brcount == 0)) {
2031 dump_declaration($prototype, $file);
2044 sub map_filename($) {
2046 my ($orig_file) = @_;
2048 if (defined($ENV{'SRCTREE'})) {
2049 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
2054 if (defined($source_map{$file})) {
2055 $file = $source_map{$file};
2061 sub process_export_file($) {
2062 my ($orig_file) = @_;
2063 my $file = map_filename($orig_file);
2065 if (!open(IN,"<$file")) {
2066 print STDERR "Error: Cannot open file $file\n";
2072 if (/$export_symbol/) {
2073 next if (defined($nosymbol_table{$2}));
2074 $function_table{$2} = 1;
2082 # Parsers for the various processing states.
2084 # STATE_NORMAL: looking for the /** to begin everything.
2086 sub process_normal() {
2087 if (/$doc_start/o) {
2088 $state = STATE_NAME; # next line is always the function name
2090 $declaration_start_line = $. + 1;
2095 # STATE_NAME: Looking for the "name - description" line
2097 sub process_name($$) {
2101 if (/$doc_block/o) {
2102 $state = STATE_DOCBLOCK;
2104 $new_start_line = $.;
2107 $section = $section_intro;
2111 } elsif (/$doc_decl/o) {
2113 my $is_kernel_comment = 0;
2114 my $decl_start = qr{\s*\*};
2115 # test for pointer declaration type, foo * bar() - desc
2116 my $fn_type = qr{\w+\s*\*\s*};
2117 my $parenthesis = qr{\(\w*\)};
2118 my $decl_end = qr{[-:].*};
2119 if (/^$decl_start\s*([\w\s]+?)$parenthesis?\s*$decl_end?$/) {
2122 if ($identifier =~ m/^(struct|union|enum|typedef)\b\s*(\S*)/) {
2125 $is_kernel_comment = 1;
2127 # Look for foo() or static void foo() - description; or misspelt
2129 elsif (/^$decl_start\s*$fn_type?(\w+)\s*$parenthesis?\s*$decl_end?$/ ||
2130 /^$decl_start\s*$fn_type?(\w+.*)$parenthesis?\s*$decl_end$/) {
2132 $decl_type = 'function';
2133 $identifier =~ s/^define\s+//;
2134 $is_kernel_comment = 1;
2136 $identifier =~ s/\s+$//;
2138 $state = STATE_BODY;
2139 # if there's no @param blocks need to set up default section
2142 $section = $section_default;
2143 $new_start_line = $. + 1;
2145 # strip leading/trailing/multiple spaces
2149 $descr =~ s/\s+/ /g;
2150 $declaration_purpose = $descr;
2151 $state = STATE_BODY_MAYBE;
2153 $declaration_purpose = "";
2156 if (!$is_kernel_comment) {
2157 print STDERR "${file}:$.: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst\n";
2160 $state = STATE_NORMAL;
2163 if (($declaration_purpose eq "") && $verbose) {
2164 print STDERR "${file}:$.: warning: missing initial short description on line:\n";
2169 if ($identifier eq "" && $decl_type ne "enum") {
2170 print STDERR "${file}:$.: warning: wrong kernel-doc identifier on line:\n";
2173 $state = STATE_NORMAL;
2177 print STDERR "${file}:$.: info: Scanning doc for $decl_type $identifier\n";
2180 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
2181 " - I thought it was a doc line\n";
2183 $state = STATE_NORMAL;
2189 # STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
2191 sub process_body($$) {
2194 # Until all named variable macro parameters are
2195 # documented using the bare name (`x`) rather than with
2196 # dots (`x...`), strip the dots:
2197 if ($section =~ /\w\.\.\.$/) {
2198 $section =~ s/\.\.\.$//;
2201 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
2206 if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
2207 dump_section($file, $section, $contents);
2208 $section = $section_default;
2209 $new_start_line = $.;
2213 if (/$doc_sect/i) { # case insensitive for supported section names
2217 # map the supported section names to the canonical names
2218 if ($newsection =~ m/^description$/i) {
2219 $newsection = $section_default;
2220 } elsif ($newsection =~ m/^context$/i) {
2221 $newsection = $section_context;
2222 } elsif ($newsection =~ m/^returns?$/i) {
2223 $newsection = $section_return;
2224 } elsif ($newsection =~ m/^\@return$/) {
2225 # special: @return is a section, not a param description
2226 $newsection = $section_return;
2229 if (($contents ne "") && ($contents ne "\n")) {
2230 if (!$in_doc_sect && $verbose) {
2231 print STDERR "${file}:$.: warning: contents before sections\n";
2234 dump_section($file, $section, $contents);
2235 $section = $section_default;
2239 $state = STATE_BODY;
2240 $contents = $newcontents;
2241 $new_start_line = $.;
2242 while (substr($contents, 0, 1) eq " ") {
2243 $contents = substr($contents, 1);
2245 if ($contents ne "") {
2248 $section = $newsection;
2249 $leading_space = undef;
2250 } elsif (/$doc_end/) {
2251 if (($contents ne "") && ($contents ne "\n")) {
2252 dump_section($file, $section, $contents);
2253 $section = $section_default;
2256 # look for doc_com + <text> + doc_end:
2257 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2258 print STDERR "${file}:$.: warning: suspicious ending line: $_";
2263 $state = STATE_PROTO;
2265 $new_start_line = $. + 1;
2266 } elsif (/$doc_content/) {
2268 if ($section eq $section_context) {
2269 dump_section($file, $section, $contents);
2270 $section = $section_default;
2272 $new_start_line = $.;
2273 $state = STATE_BODY;
2275 if ($section ne $section_default) {
2276 $state = STATE_BODY_WITH_BLANK_LINE;
2278 $state = STATE_BODY;
2282 } elsif ($state == STATE_BODY_MAYBE) {
2283 # Continued declaration purpose
2284 chomp($declaration_purpose);
2285 $declaration_purpose .= " " . $1;
2286 $declaration_purpose =~ s/\s+/ /g;
2289 if ($section =~ m/^@/ || $section eq $section_context) {
2290 if (!defined $leading_space) {
2291 if ($cont =~ m/^(\s+)/) {
2292 $leading_space = $1;
2294 $leading_space = "";
2297 $cont =~ s/^$leading_space//;
2299 $contents .= $cont . "\n";
2302 # i dont know - bad line? ignore.
2303 print STDERR "${file}:$.: warning: bad line: $_";
2310 # STATE_PROTO: reading a function/whatever prototype.
2312 sub process_proto($$) {
2315 if (/$doc_inline_oneline/) {
2318 if ($contents ne "") {
2320 dump_section($file, $section, $contents);
2321 $section = $section_default;
2324 } elsif (/$doc_inline_start/) {
2325 $state = STATE_INLINE;
2326 $inline_doc_state = STATE_INLINE_NAME;
2327 } elsif ($decl_type eq 'function') {
2328 process_proto_function($_, $file);
2330 process_proto_type($_, $file);
2335 # STATE_DOCBLOCK: within a DOC: block.
2337 sub process_docblock($$) {
2341 dump_doc_section($file, $section, $contents);
2342 $section = $section_default;
2345 %parameterdescs = ();
2346 %parametertypes = ();
2347 @parameterlist = ();
2351 $state = STATE_NORMAL;
2352 } elsif (/$doc_content/) {
2354 $contents .= $blankline;
2356 $contents .= $1 . "\n";
2362 # STATE_INLINE: docbook comments within a prototype.
2364 sub process_inline($$) {
2367 # First line (state 1) needs to be a @parameter
2368 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
2371 $new_start_line = $.;
2372 if ($contents ne "") {
2373 while (substr($contents, 0, 1) eq " ") {
2374 $contents = substr($contents, 1);
2378 $inline_doc_state = STATE_INLINE_TEXT;
2379 # Documentation block end */
2380 } elsif (/$doc_inline_end/) {
2381 if (($contents ne "") && ($contents ne "\n")) {
2382 dump_section($file, $section, $contents);
2383 $section = $section_default;
2386 $state = STATE_PROTO;
2387 $inline_doc_state = STATE_INLINE_NA;
2389 } elsif (/$doc_content/) {
2390 if ($inline_doc_state == STATE_INLINE_TEXT) {
2391 $contents .= $1 . "\n";
2392 # nuke leading blank lines
2393 if ($contents =~ /^\s*$/) {
2396 } elsif ($inline_doc_state == STATE_INLINE_NAME) {
2397 $inline_doc_state = STATE_INLINE_ERROR;
2398 print STDERR "${file}:$.: warning: ";
2399 print STDERR "Incorrect use of kernel-doc format: $_";
2406 sub process_file($) {
2408 my $initial_section_counter = $section_counter;
2409 my ($orig_file) = @_;
2411 $file = map_filename($orig_file);
2413 if (!open(IN_FILE,"<$file")) {
2414 print STDERR "Error: Cannot open file $file\n";
2421 $section_counter = 0;
2423 while (s/\\\s*$//) {
2426 # Replace tabs by spaces
2427 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
2428 # Hand this line to the appropriate state handler
2429 if ($state == STATE_NORMAL) {
2431 } elsif ($state == STATE_NAME) {
2432 process_name($file, $_);
2433 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
2434 $state == STATE_BODY_WITH_BLANK_LINE) {
2435 process_body($file, $_);
2436 } elsif ($state == STATE_INLINE) { # scanning for inline parameters
2437 process_inline($file, $_);
2438 } elsif ($state == STATE_PROTO) {
2439 process_proto($file, $_);
2440 } elsif ($state == STATE_DOCBLOCK) {
2441 process_docblock($file, $_);
2445 # Make sure we got something interesting.
2446 if ($initial_section_counter == $section_counter && $
2447 output_mode ne "none") {
2448 if ($output_selection == OUTPUT_INCLUDE) {
2449 print STDERR "${file}:1: warning: '$_' not found\n"
2450 for keys %function_table;
2453 print STDERR "${file}:1: warning: no structured comments found\n";
2460 if ($output_mode eq "rst") {
2461 get_sphinx_version() if (!$sphinx_major);
2464 $kernelversion = get_kernel_version();
2466 # generate a sequence of code that will splice in highlighting information
2467 # using the s// operator.
2468 for (my $k = 0; $k < @highlights; $k++) {
2469 my $pattern = $highlights[$k][0];
2470 my $result = $highlights[$k][1];
2471 # print STDERR "scanning pattern:$pattern, highlight:($result)\n";
2472 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
2475 # Read the file that maps relative names to absolute names for
2476 # separate source and object directories and for shadow trees.
2477 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2478 my ($relname, $absname);
2479 while(<SOURCE_MAP>) {
2481 ($relname, $absname) = (split())[0..1];
2482 $relname =~ s:^/+::;
2483 $source_map{$relname} = $absname;
2488 if ($output_selection == OUTPUT_EXPORTED ||
2489 $output_selection == OUTPUT_INTERNAL) {
2491 push(@export_file_list, @ARGV);
2493 foreach (@export_file_list) {
2495 process_export_file($_);
2503 if ($verbose && $errors) {
2504 print STDERR "$errors errors\n";
2506 if ($verbose && $warnings) {
2507 print STDERR "$warnings warnings\n";
2510 if ($Werror && $warnings) {
2511 print STDERR "$warnings warnings as Errors\n";
2514 exit($output_mode eq "none" ? 0 : $errors)