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
394 my $doc_sect = $doc_com .
395 '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:(.*)';
396 my $doc_content = $doc_com_body . '(.*)';
397 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
398 my $doc_inline_start = '^\s*/\*\*\s*$';
399 my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
400 my $doc_inline_end = '^\s*\*/\s*$';
401 my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
402 my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
405 my %parameterdesc_start_lines;
409 my %section_start_lines;
414 my $new_start_line = 0;
416 # the canonical section names. see also $doc_sect above.
417 my $section_default = "Description"; # default section
418 my $section_intro = "Introduction";
419 my $section = $section_default;
420 my $section_context = "Context";
421 my $section_return = "Return";
423 my $undescribed = "-- undescribed --";
427 while ($ARGV[0] =~ m/^--?(.*)/) {
431 $output_mode = "man";
432 @highlights = @highlights_man;
433 $blankline = $blankline_man;
434 } elsif ($cmd eq "rst") {
435 $output_mode = "rst";
436 @highlights = @highlights_rst;
437 $blankline = $blankline_rst;
438 } elsif ($cmd eq "none") {
439 $output_mode = "none";
440 } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
441 $modulename = shift @ARGV;
442 } elsif ($cmd eq "function") { # to only output specific functions
443 $output_selection = OUTPUT_INCLUDE;
444 $function = shift @ARGV;
445 $function_table{$function} = 1;
446 } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
447 my $symbol = shift @ARGV;
448 $nosymbol_table{$symbol} = 1;
449 } elsif ($cmd eq "export") { # only exported symbols
450 $output_selection = OUTPUT_EXPORTED;
451 %function_table = ();
452 } elsif ($cmd eq "internal") { # only non-exported symbols
453 $output_selection = OUTPUT_INTERNAL;
454 %function_table = ();
455 } elsif ($cmd eq "export-file") {
456 my $file = shift @ARGV;
457 push(@export_file_list, $file);
458 } elsif ($cmd eq "v") {
460 } elsif ($cmd eq "Werror") {
462 } elsif (($cmd eq "h") || ($cmd eq "help")) {
464 } elsif ($cmd eq 'no-doc-sections') {
465 $no_doc_sections = 1;
466 } elsif ($cmd eq 'enable-lineno') {
468 } elsif ($cmd eq 'show-not-found') {
469 $show_not_found = 1; # A no-op but don't fail
470 } elsif ($cmd eq "sphinx-version") {
471 my $ver_string = shift @ARGV;
472 if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) {
475 $sphinx_minor = substr($2,1);
480 $sphinx_patch = substr($3,1)
485 die "Sphinx version should either major.minor or major.minor.patch format\n";
493 # continue execution near EOF;
495 # The C domain dialect changed on Sphinx 3. So, we need to check the
496 # version in order to produce the right tags.
499 foreach(split(/:/, $ENV{PATH})) {
500 return "$_/$_[0]" if(-x "$_/$_[0]");
504 sub get_sphinx_version()
508 my $cmd = "sphinx-build";
509 if (!findprog($cmd)) {
510 my $cmd = "sphinx-build3";
511 if (!findprog($cmd)) {
515 printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n",
516 $sphinx_major, $sphinx_minor, $sphinx_patch;
521 open IN, "$cmd --version 2>&1 |";
523 if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
529 # Sphinx 1.2.x uses a different format
530 if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
540 # get kernel version from env
541 sub get_kernel_version() {
542 my $version = 'unknown kernel version';
544 if (defined($ENV{'KERNELVERSION'})) {
545 $version = $ENV{'KERNELVERSION'};
553 if ($enable_lineno && defined($lineno)) {
554 print "#define LINENO " . $lineno . "\n";
558 # dumps section contents to arrays/hashes intended for that purpose.
563 my $contents = join "\n", @_;
565 if ($name =~ m/$type_param/) {
567 $parameterdescs{$name} = $contents;
568 $sectcheck = $sectcheck . $name . " ";
569 $parameterdesc_start_lines{$name} = $new_start_line;
571 } elsif ($name eq "@\.\.\.") {
573 $parameterdescs{$name} = $contents;
574 $sectcheck = $sectcheck . $name . " ";
575 $parameterdesc_start_lines{$name} = $new_start_line;
578 if (defined($sections{$name}) && ($sections{$name} ne "")) {
579 # Only warn on user specified duplicate section names.
580 if ($name ne $section_default) {
581 print STDERR "${file}:$.: warning: duplicate section name '$name'\n";
584 $sections{$name} .= $contents;
586 $sections{$name} = $contents;
587 push @sectionlist, $name;
588 $section_start_lines{$name} = $new_start_line;
595 # dump DOC: section after checking that it should go out
597 sub dump_doc_section {
600 my $contents = join "\n", @_;
602 if ($no_doc_sections) {
606 return if (defined($nosymbol_table{$name}));
608 if (($output_selection == OUTPUT_ALL) ||
609 (($output_selection == OUTPUT_INCLUDE) &&
610 defined($function_table{$name})))
612 dump_section($file, $name, $contents);
613 output_blockhead({'sectionlist' => \@sectionlist,
614 'sections' => \%sections,
615 'module' => $modulename,
616 'content-only' => ($output_selection != OUTPUT_ALL), });
623 # parameterdescs, a hash.
624 # function => "function name"
625 # parameterlist => @list of parameters
626 # parameterdescs => %parameter descriptions
627 # sectionlist => @list of sections
628 # sections => %section descriptions
631 sub output_highlight {
632 my $contents = join "\n",@_;
636 # if (!defined $contents) {
638 # confess "output_highlight got called with no args?\n";
641 # print STDERR "contents b4:$contents\n";
644 # print STDERR "contents af:$contents\n";
646 foreach $line (split "\n", $contents) {
647 if (! $output_preformatted) {
651 if (! $output_preformatted) {
652 print $lineprefix, $blankline;
655 if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
658 print $lineprefix, $line;
666 # output function in man
667 sub output_function_man(%) {
669 my ($parameter, $section);
672 print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
675 print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
677 print ".SH SYNOPSIS\n";
678 if ($args{'functiontype'} ne "") {
679 print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
681 print ".B \"" . $args{'function'} . "\n";
686 foreach my $parameter (@{$args{'parameterlist'}}) {
687 if ($count == $#{$args{'parameterlist'}}) {
690 $type = $args{'parametertypes'}{$parameter};
691 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
692 # pointer-to-function
693 print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
695 $type =~ s/([^\*])$/$1 /;
696 print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
702 print ".SH ARGUMENTS\n";
703 foreach $parameter (@{$args{'parameterlist'}}) {
704 my $parameter_name = $parameter;
705 $parameter_name =~ s/\[.*//;
707 print ".IP \"" . $parameter . "\" 12\n";
708 output_highlight($args{'parameterdescs'}{$parameter_name});
710 foreach $section (@{$args{'sectionlist'}}) {
711 print ".SH \"", uc $section, "\"\n";
712 output_highlight($args{'sections'}{$section});
718 sub output_enum_man(%) {
720 my ($parameter, $section);
723 print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
726 print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
728 print ".SH SYNOPSIS\n";
729 print "enum " . $args{'enum'} . " {\n";
731 foreach my $parameter (@{$args{'parameterlist'}}) {
732 print ".br\n.BI \" $parameter\"\n";
733 if ($count == $#{$args{'parameterlist'}}) {
743 print ".SH Constants\n";
744 foreach $parameter (@{$args{'parameterlist'}}) {
745 my $parameter_name = $parameter;
746 $parameter_name =~ s/\[.*//;
748 print ".IP \"" . $parameter . "\" 12\n";
749 output_highlight($args{'parameterdescs'}{$parameter_name});
751 foreach $section (@{$args{'sectionlist'}}) {
752 print ".SH \"$section\"\n";
753 output_highlight($args{'sections'}{$section});
758 # output struct in man
759 sub output_struct_man(%) {
761 my ($parameter, $section);
763 print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
766 print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
768 my $declaration = $args{'definition'};
769 $declaration =~ s/\t/ /g;
770 $declaration =~ s/\n/"\n.br\n.BI \"/g;
771 print ".SH SYNOPSIS\n";
772 print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
773 print ".BI \"$declaration\n};\n.br\n\n";
775 print ".SH Members\n";
776 foreach $parameter (@{$args{'parameterlist'}}) {
777 ($parameter =~ /^#/) && next;
779 my $parameter_name = $parameter;
780 $parameter_name =~ s/\[.*//;
782 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
783 print ".IP \"" . $parameter . "\" 12\n";
784 output_highlight($args{'parameterdescs'}{$parameter_name});
786 foreach $section (@{$args{'sectionlist'}}) {
787 print ".SH \"$section\"\n";
788 output_highlight($args{'sections'}{$section});
793 # output typedef in man
794 sub output_typedef_man(%) {
796 my ($parameter, $section);
798 print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
801 print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
803 foreach $section (@{$args{'sectionlist'}}) {
804 print ".SH \"$section\"\n";
805 output_highlight($args{'sections'}{$section});
809 sub output_blockhead_man(%) {
811 my ($parameter, $section);
814 print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
816 foreach $section (@{$args{'sectionlist'}}) {
817 print ".SH \"$section\"\n";
818 output_highlight($args{'sections'}{$section});
823 # output in restructured text
827 # This could use some work; it's used to output the DOC: sections, and
828 # starts by putting out the name of the doc section itself, but that tends
829 # to duplicate a header already in the template file.
831 sub output_blockhead_rst(%) {
833 my ($parameter, $section);
835 foreach $section (@{$args{'sectionlist'}}) {
836 next if (defined($nosymbol_table{$section}));
838 if ($output_selection != OUTPUT_INCLUDE) {
839 print ".. _$section:\n\n";
840 print "**$section**\n\n";
842 print_lineno($section_start_lines{$section});
843 output_highlight_rst($args{'sections'}{$section});
849 # Apply the RST highlights to a sub-block of text.
851 sub highlight_block($) {
852 # The dohighlight kludge requires the text be called $contents
853 my $contents = shift;
860 # Regexes used only here.
862 my $sphinx_literal = '^[^.].*::$';
863 my $sphinx_cblock = '^\.\.\ +code-block::';
865 sub output_highlight_rst {
866 my $input = join "\n",@_;
873 foreach $line (split "\n",$input) {
875 # If we're in a literal block, see if we should drop out
876 # of it. Otherwise pass the line straight through unmunged.
879 if (! ($line =~ /^\s*$/)) {
881 # If this is the first non-blank line in a literal
882 # block we need to figure out what the proper indent is.
884 if ($litprefix eq "") {
886 $litprefix = '^' . $1;
887 $output .= $line . "\n";
888 } elsif (! ($line =~ /$litprefix/)) {
891 $output .= $line . "\n";
894 $output .= $line . "\n";
898 # Not in a literal block (or just dropped out)
901 $block .= $line . "\n";
902 if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
905 $output .= highlight_block($block);
912 $output .= highlight_block($block);
914 foreach $line (split "\n", $output) {
915 print $lineprefix . $line . "\n";
919 sub output_function_rst(%) {
921 my ($parameter, $section);
922 my $oldprefix = $lineprefix;
926 if ($sphinx_major < 3) {
927 if ($args{'typedef'}) {
928 print ".. c:type:: ". $args{'function'} . "\n\n";
929 print_lineno($declaration_start_line);
930 print " **Typedef**: ";
932 output_highlight_rst($args{'purpose'});
933 $start = "\n\n**Syntax**\n\n ``";
936 print ".. c:function:: ";
939 if ($args{'typedef'} || $args{'functiontype'} eq "") {
941 print ".. c:macro:: ". $args{'function'} . "\n\n";
943 print ".. c:function:: ";
946 if ($args{'typedef'}) {
947 print_lineno($declaration_start_line);
948 print " **Typedef**: ";
950 output_highlight_rst($args{'purpose'});
951 $start = "\n\n**Syntax**\n\n ``";
953 print "``" if ($is_macro);
956 if ($args{'functiontype'} ne "") {
957 $start .= $args{'functiontype'} . " " . $args{'function'} . " (";
959 $start .= $args{'function'} . " (";
964 foreach my $parameter (@{$args{'parameterlist'}}) {
969 $type = $args{'parametertypes'}{$parameter};
971 if ($type =~ m/([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)/) {
972 # pointer-to-function
973 print $1 . $parameter . ") (" . $2 . ")";
983 if (!$args{'typedef'}) {
984 print_lineno($declaration_start_line);
986 output_highlight_rst($args{'purpose'});
990 print "**Parameters**\n\n";
992 foreach $parameter (@{$args{'parameterlist'}}) {
993 my $parameter_name = $parameter;
994 $parameter_name =~ s/\[.*//;
995 $type = $args{'parametertypes'}{$parameter};
1000 print "``$parameter``\n";
1003 print_lineno($parameterdesc_start_lines{$parameter_name});
1005 if (defined($args{'parameterdescs'}{$parameter_name}) &&
1006 $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
1007 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1009 print " *undescribed*\n";
1014 $lineprefix = $oldprefix;
1015 output_section_rst(@_);
1018 sub output_section_rst(%) {
1019 my %args = %{$_[0]};
1021 my $oldprefix = $lineprefix;
1024 foreach $section (@{$args{'sectionlist'}}) {
1025 print "**$section**\n\n";
1026 print_lineno($section_start_lines{$section});
1027 output_highlight_rst($args{'sections'}{$section});
1031 $lineprefix = $oldprefix;
1034 sub output_enum_rst(%) {
1035 my %args = %{$_[0]};
1037 my $oldprefix = $lineprefix;
1040 if ($sphinx_major < 3) {
1041 my $name = "enum " . $args{'enum'};
1042 print "\n\n.. c:type:: " . $name . "\n\n";
1044 my $name = $args{'enum'};
1045 print "\n\n.. c:enum:: " . $name . "\n\n";
1047 print_lineno($declaration_start_line);
1049 output_highlight_rst($args{'purpose'});
1052 print "**Constants**\n\n";
1054 foreach $parameter (@{$args{'parameterlist'}}) {
1055 print "``$parameter``\n";
1056 if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
1057 output_highlight_rst($args{'parameterdescs'}{$parameter});
1059 print " *undescribed*\n";
1064 $lineprefix = $oldprefix;
1065 output_section_rst(@_);
1068 sub output_typedef_rst(%) {
1069 my %args = %{$_[0]};
1071 my $oldprefix = $lineprefix;
1074 if ($sphinx_major < 3) {
1075 $name = "typedef " . $args{'typedef'};
1077 $name = $args{'typedef'};
1079 print "\n\n.. c:type:: " . $name . "\n\n";
1080 print_lineno($declaration_start_line);
1082 output_highlight_rst($args{'purpose'});
1085 $lineprefix = $oldprefix;
1086 output_section_rst(@_);
1089 sub output_struct_rst(%) {
1090 my %args = %{$_[0]};
1092 my $oldprefix = $lineprefix;
1094 if ($sphinx_major < 3) {
1095 my $name = $args{'type'} . " " . $args{'struct'};
1096 print "\n\n.. c:type:: " . $name . "\n\n";
1098 my $name = $args{'struct'};
1099 if ($args{'type'} eq 'union') {
1100 print "\n\n.. c:union:: " . $name . "\n\n";
1102 print "\n\n.. c:struct:: " . $name . "\n\n";
1105 print_lineno($declaration_start_line);
1107 output_highlight_rst($args{'purpose'});
1110 print "**Definition**\n\n";
1112 my $declaration = $args{'definition'};
1113 $declaration =~ s/\t/ /g;
1114 print " " . $args{'type'} . " " . $args{'struct'} . " {\n$declaration };\n\n";
1116 print "**Members**\n\n";
1118 foreach $parameter (@{$args{'parameterlist'}}) {
1119 ($parameter =~ /^#/) && next;
1121 my $parameter_name = $parameter;
1122 $parameter_name =~ s/\[.*//;
1124 ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
1125 $type = $args{'parametertypes'}{$parameter};
1126 print_lineno($parameterdesc_start_lines{$parameter_name});
1127 print "``" . $parameter . "``\n";
1128 output_highlight_rst($args{'parameterdescs'}{$parameter_name});
1133 $lineprefix = $oldprefix;
1134 output_section_rst(@_);
1137 ## none mode output functions
1139 sub output_function_none(%) {
1142 sub output_enum_none(%) {
1145 sub output_typedef_none(%) {
1148 sub output_struct_none(%) {
1151 sub output_blockhead_none(%) {
1155 # generic output function for all types (function, struct/union, typedef, enum);
1156 # calls the generated, variable output_ function name based on
1157 # functype and output_mode
1158 sub output_declaration {
1161 my $functype = shift;
1162 my $func = "output_${functype}_$output_mode";
1164 return if (defined($nosymbol_table{$name}));
1166 if (($output_selection == OUTPUT_ALL) ||
1167 (($output_selection == OUTPUT_INCLUDE ||
1168 $output_selection == OUTPUT_EXPORTED) &&
1169 defined($function_table{$name})) ||
1170 ($output_selection == OUTPUT_INTERNAL &&
1171 !($functype eq "function" && defined($function_table{$name}))))
1179 # generic output function - calls the right one based on current output mode.
1180 sub output_blockhead {
1182 my $func = "output_blockhead_" . $output_mode;
1188 # takes a declaration (struct, union, enum, typedef) and
1189 # invokes the right handler. NOT called for functions.
1190 sub dump_declaration($$) {
1192 my ($prototype, $file) = @_;
1193 my $func = "dump_" . $decl_type;
1197 sub dump_union($$) {
1201 sub dump_struct($$) {
1205 if ($x =~ /(struct|union)\s+(\w+)\s*\{(.*)\}(\s*(__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned|__attribute__\s*\(\([a-z0-9,_\s\(\)]*\)\)))*/) {
1207 $declaration_name = $2;
1210 if ($identifier ne $declaration_name) {
1211 print STDERR "${file}:$.: warning: expecting prototype for $decl_type $identifier. Prototype was for $decl_type $declaration_name instead\n";
1215 # ignore members marked private:
1216 $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
1217 $members =~ s/\/\*\s*private:.*//gosi;
1219 $members =~ s/\/\*.*?\*\///gos;
1221 $members =~ s/\s*__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)/ /gi;
1222 $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
1223 $members =~ s/\s*__packed\s*/ /gos;
1224 $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
1225 $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
1226 $members =~ s/\s*____cacheline_aligned/ /gos;
1228 # replace DECLARE_BITMAP
1229 $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
1230 $members =~ s/DECLARE_BITMAP\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
1231 # replace DECLARE_HASHTABLE
1232 $members =~ s/DECLARE_HASHTABLE\s*\(([^,)]+),\s*([^,)]+)\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
1233 # replace DECLARE_KFIFO
1234 $members =~ s/DECLARE_KFIFO\s*\(([^,)]+),\s*([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1235 # replace DECLARE_KFIFO_PTR
1236 $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos;
1238 my $declaration = $members;
1240 # Split nested struct/union elements as newer ones
1241 while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) {
1246 foreach my $id(split /,/, $ids) {
1247 $newmember .= "$maintype $id; ";
1250 $id =~ s/^\s*\**(\S+)\s*/$1/;
1251 foreach my $arg (split /;/, $content) {
1252 next if ($arg =~ m/^\s*$/);
1253 if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
1254 # pointer-to-function
1259 if ($id =~ m/^\s*$/) {
1260 # anonymous struct/union
1261 $newmember .= "$type$name$extra; ";
1263 $newmember .= "$type$id.$name$extra; ";
1271 $arg =~ s/:\s*\d+\s*//g;
1273 $arg =~ s/\[.*\]//g;
1274 # The type may have multiple words,
1275 # and multiple IDs can be defined, like:
1276 # const struct foo, *bar, foobar
1277 # So, we remove spaces when parsing the
1278 # names, in order to match just names
1279 # and commas for the names
1280 $arg =~ s/\s*,\s*/,/g;
1281 if ($arg =~ m/(.*)\s+([\S+,]+)/) {
1285 $newmember .= "$arg; ";
1288 foreach my $name (split /,/, $names) {
1289 $name =~ s/^\s*\**(\S+)\s*/$1/;
1290 next if (($name =~ m/^\s*$/));
1291 if ($id =~ m/^\s*$/) {
1292 # anonymous struct/union
1293 $newmember .= "$type $name; ";
1295 $newmember .= "$type $id.$name; ";
1301 $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/$newmember/;
1304 # Ignore other nested elements, like enums
1305 $members =~ s/(\{[^\{\}]*\})//g;
1307 create_parameterlist($members, ';', $file, $declaration_name);
1308 check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
1310 # Adjust declaration for better display
1311 $declaration =~ s/([\{;])/$1\n/g;
1312 $declaration =~ s/\}\s+;/};/g;
1313 # Better handle inlined enums
1314 do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
1316 my @def_args = split /\n/, $declaration;
1319 foreach my $clause (@def_args) {
1320 $clause =~ s/^\s+//;
1321 $clause =~ s/\s+$//;
1322 $clause =~ s/\s+/ /;
1324 $level-- if ($clause =~ m/(\})/ && $level > 1);
1325 if (!($clause =~ m/^\s*#/)) {
1326 $declaration .= "\t" x $level;
1328 $declaration .= "\t" . $clause . "\n";
1329 $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
1331 output_declaration($declaration_name,
1333 {'struct' => $declaration_name,
1334 'module' => $modulename,
1335 'definition' => $declaration,
1336 'parameterlist' => \@parameterlist,
1337 'parameterdescs' => \%parameterdescs,
1338 'parametertypes' => \%parametertypes,
1339 'sectionlist' => \@sectionlist,
1340 'sections' => \%sections,
1341 'purpose' => $declaration_purpose,
1342 'type' => $decl_type
1346 print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
1352 sub show_warnings($$) {
1353 my $functype = shift;
1356 return 0 if (defined($nosymbol_table{$name}));
1358 return 1 if ($output_selection == OUTPUT_ALL);
1360 if ($output_selection == OUTPUT_EXPORTED) {
1361 if (defined($function_table{$name})) {
1367 if ($output_selection == OUTPUT_INTERNAL) {
1368 if (!($functype eq "function" && defined($function_table{$name}))) {
1374 if ($output_selection == OUTPUT_INCLUDE) {
1375 if (defined($function_table{$name})) {
1381 die("Please add the new output type at show_warnings()");
1390 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1391 # strip #define macros inside enums
1392 $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
1394 if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
1395 $declaration_name = $2;
1397 } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
1398 $declaration_name = $1;
1403 if ($identifier ne $declaration_name) {
1404 print STDERR "${file}:$.: warning: expecting prototype for enum $identifier. Prototype was for enum $declaration_name instead\n";
1410 $members =~ s/\s+$//;
1412 foreach my $arg (split ',', $members) {
1413 $arg =~ s/^\s*(\w+).*/$1/;
1414 push @parameterlist, $arg;
1415 if (!$parameterdescs{$arg}) {
1416 $parameterdescs{$arg} = $undescribed;
1417 if (show_warnings("enum", $declaration_name)) {
1418 print STDERR "${file}:$.: warning: Enum value '$arg' not described in enum '$declaration_name'\n";
1421 $_members{$arg} = 1;
1424 while (my ($k, $v) = each %parameterdescs) {
1425 if (!exists($_members{$k})) {
1426 if (show_warnings("enum", $declaration_name)) {
1427 print STDERR "${file}:$.: warning: Excess enum value '$k' description in '$declaration_name'\n";
1432 output_declaration($declaration_name,
1434 {'enum' => $declaration_name,
1435 'module' => $modulename,
1436 'parameterlist' => \@parameterlist,
1437 'parameterdescs' => \%parameterdescs,
1438 'sectionlist' => \@sectionlist,
1439 'sections' => \%sections,
1440 'purpose' => $declaration_purpose
1443 print STDERR "${file}:$.: error: Cannot parse enum!\n";
1448 my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x;
1449 my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
1450 my $typedef_args = qr { \s*\((.*)\); }x;
1452 my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
1453 my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
1455 sub dump_typedef($$) {
1459 $x =~ s@/\*.*?\*/@@gos; # strip comments.
1461 # Parse function typedef prototypes
1462 if ($x =~ $typedef1 || $x =~ $typedef2) {
1464 $declaration_name = $2;
1466 $return_type =~ s/^\s+//;
1468 if ($identifier ne $declaration_name) {
1469 print STDERR "${file}:$.: warning: expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n";
1473 create_parameterlist($args, ',', $file, $declaration_name);
1475 output_declaration($declaration_name,
1477 {'function' => $declaration_name,
1479 'module' => $modulename,
1480 'functiontype' => $return_type,
1481 'parameterlist' => \@parameterlist,
1482 'parameterdescs' => \%parameterdescs,
1483 'parametertypes' => \%parametertypes,
1484 'sectionlist' => \@sectionlist,
1485 'sections' => \%sections,
1486 'purpose' => $declaration_purpose
1491 while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
1492 $x =~ s/\(*.\)\s*;$/;/;
1493 $x =~ s/\[*.\]\s*;$/;/;
1496 if ($x =~ /typedef.*\s+(\w+)\s*;/) {
1497 $declaration_name = $1;
1499 if ($identifier ne $declaration_name) {
1500 print STDERR "${file}:$.: warning: expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n";
1504 output_declaration($declaration_name,
1506 {'typedef' => $declaration_name,
1507 'module' => $modulename,
1508 'sectionlist' => \@sectionlist,
1509 'sections' => \%sections,
1510 'purpose' => $declaration_purpose
1514 print STDERR "${file}:$.: error: Cannot parse typedef!\n";
1519 sub save_struct_actual($) {
1522 # strip all spaces from the actual param so that it looks like one string item
1523 $actual =~ s/\s*//g;
1524 $struct_actual = $struct_actual . $actual . " ";
1527 sub create_parameterlist($$$$) {
1529 my $splitter = shift;
1531 my $declaration_name = shift;
1535 # temporarily replace commas inside function pointer definition
1536 while ($args =~ /(\([^\),]+),/) {
1537 $args =~ s/(\([^\),]+),/$1#/g;
1540 foreach my $arg (split($splitter, $args)) {
1542 $arg =~ s/\/\*.*\*\///;
1543 # strip leading/trailing spaces
1549 # Treat preprocessor directive as a typeless variable just to fill
1550 # corresponding data structures "correctly". Catch it later in
1552 push_parameter($arg, "", "", $file);
1553 } elsif ($arg =~ m/\(.+\)\s*\(/) {
1554 # pointer-to-function
1556 $arg =~ m/[^\(]+\(\*?\s*([\w\.]*)\s*\)/;
1559 $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
1560 save_struct_actual($param);
1561 push_parameter($param, $type, $arg, $file, $declaration_name);
1563 $arg =~ s/\s*:\s*/:/g;
1564 $arg =~ s/\s*\[/\[/g;
1566 my @args = split('\s*,\s*', $arg);
1567 if ($args[0] =~ m/\*/) {
1568 $args[0] =~ s/(\*+)\s*/ $1/;
1572 if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
1574 push(@first_arg, split('\s+', $1));
1575 push(@first_arg, $2);
1577 @first_arg = split('\s+', shift @args);
1580 unshift(@args, pop @first_arg);
1581 $type = join " ", @first_arg;
1583 foreach $param (@args) {
1584 if ($param =~ m/^(\*+)\s*(.*)/) {
1585 save_struct_actual($2);
1587 push_parameter($2, "$type $1", $arg, $file, $declaration_name);
1589 elsif ($param =~ m/(.*?):(\d+)/) {
1590 if ($type ne "") { # skip unnamed bit-fields
1591 save_struct_actual($1);
1592 push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
1596 save_struct_actual($param);
1597 push_parameter($param, $type, $arg, $file, $declaration_name);
1604 sub push_parameter($$$$$) {
1607 my $org_arg = shift;
1609 my $declaration_name = shift;
1611 if (($anon_struct_union == 1) && ($type eq "") &&
1613 return; # ignore the ending }; from anon. struct/union
1616 $anon_struct_union = 0;
1617 $param =~ s/[\[\)].*//;
1619 if ($type eq "" && $param =~ /\.\.\.$/)
1621 if (!$param =~ /\w\.\.\.$/) {
1622 # handles unnamed variable parameters
1625 elsif ($param =~ /\w\.\.\.$/) {
1626 # for named variable parameters of the form `x...`, remove the dots
1627 $param =~ s/\.\.\.$//;
1629 if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
1630 $parameterdescs{$param} = "variable arguments";
1633 elsif ($type eq "" && ($param eq "" or $param eq "void"))
1636 $parameterdescs{void} = "no arguments";
1638 elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
1639 # handle unnamed (anonymous) union or struct:
1642 $param = "{unnamed_" . $param . "}";
1643 $parameterdescs{$param} = "anonymous\n";
1644 $anon_struct_union = 1;
1647 # warn if parameter has no description
1648 # (but ignore ones starting with # as these are not parameters
1649 # but inline preprocessor statements);
1650 # Note: It will also ignore void params and unnamed structs/unions
1651 if (!defined $parameterdescs{$param} && $param !~ /^#/) {
1652 $parameterdescs{$param} = $undescribed;
1654 if (show_warnings($type, $declaration_name) && $param !~ /\./) {
1656 "${file}:$.: warning: Function parameter or member '$param' not described in '$declaration_name'\n";
1661 # strip spaces from $param so that it is one continuous string
1662 # on @parameterlist;
1663 # this fixes a problem where check_sections() cannot find
1664 # a parameter like "addr[6 + 2]" because it actually appears
1665 # as "addr[6", "+", "2]" on the parameter list;
1666 # but it's better to maintain the param string unchanged for output,
1667 # so just weaken the string compare in check_sections() to ignore
1668 # "[blah" in a parameter string;
1669 ###$param =~ s/\s*//g;
1670 push @parameterlist, $param;
1671 $org_arg =~ s/\s\s+/ /g;
1672 $parametertypes{$param} = $org_arg;
1675 sub check_sections($$$$$) {
1676 my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
1677 my @sects = split ' ', $sectcheck;
1678 my @prms = split ' ', $prmscheck;
1681 my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
1683 foreach $sx (0 .. $#sects) {
1685 foreach $px (0 .. $#prms) {
1686 $prm_clean = $prms[$px];
1687 $prm_clean =~ s/\[.*\]//;
1688 $prm_clean =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
1689 # ignore array size in a parameter string;
1690 # however, the original param string may contain
1691 # spaces, e.g.: addr[6 + 2]
1692 # and this appears in @prms as "addr[6" since the
1693 # parameter list is split at spaces;
1694 # hence just ignore "[..." for the sections check;
1695 $prm_clean =~ s/\[.*//;
1697 ##$prm_clean =~ s/^\**//;
1698 if ($prm_clean eq $sects[$sx]) {
1704 if ($decl_type eq "function") {
1705 print STDERR "${file}:$.: warning: " .
1706 "Excess function parameter " .
1708 "description in '$decl_name'\n";
1716 # Checks the section describing the return value of a function.
1717 sub check_return_section {
1719 my $declaration_name = shift;
1720 my $return_type = shift;
1722 # Ignore an empty return type (It's a macro)
1723 # Ignore functions with a "void" return type. (But don't ignore "void *")
1724 if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
1728 if (!defined($sections{$section_return}) ||
1729 $sections{$section_return} eq "") {
1730 print STDERR "${file}:$.: warning: " .
1731 "No description found for return value of " .
1732 "'$declaration_name'\n";
1738 # takes a function prototype and the name of the current file being
1739 # processed and spits out all the details stored in the global
1741 sub dump_function($$) {
1742 my $prototype = shift;
1746 print_lineno($new_start_line);
1748 $prototype =~ s/^static +//;
1749 $prototype =~ s/^extern +//;
1750 $prototype =~ s/^asmlinkage +//;
1751 $prototype =~ s/^inline +//;
1752 $prototype =~ s/^__inline__ +//;
1753 $prototype =~ s/^__inline +//;
1754 $prototype =~ s/^__always_inline +//;
1755 $prototype =~ s/^noinline +//;
1756 $prototype =~ s/__init +//;
1757 $prototype =~ s/__init_or_module +//;
1758 $prototype =~ s/__meminit +//;
1759 $prototype =~ s/__must_check +//;
1760 $prototype =~ s/__weak +//;
1761 $prototype =~ s/__sched +//;
1762 $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
1763 my $define = $prototype =~ s/^#\s*define\s+//; #ak added
1764 $prototype =~ s/__attribute__\s*\(\(
1766 [\w\s]++ # attribute name
1767 (?:\([^)]*+\))? # attribute arguments
1768 \s*+,? # optional comma at the end
1772 # Yes, this truly is vile. We are looking for:
1773 # 1. Return type (may be nothing if we're looking at a macro)
1775 # 3. Function parameters.
1777 # All the while we have to watch out for function pointer parameters
1778 # (which IIRC is what the two sections are for), C types (these
1779 # regexps don't even start to express all the possibilities), and
1782 # If you mess with these regexps, it's a good idea to check that
1783 # the following functions' documentation still comes out right:
1784 # - parport_register_device (function pointer parameters)
1785 # - atomic_set (macro)
1786 # - pci_match_device, __copy_to_user (long return type)
1788 if ($define && $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s+/) {
1789 # This is an object-like macro, it has no return type and no parameter
1791 # Function-like macros are not allowed to have spaces between
1792 # declaration_name and opening parenthesis (notice the \s+).
1794 $declaration_name = $2;
1796 } elsif ($prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1797 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1798 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1799 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1800 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1801 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1802 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\(]*)\)/ ||
1803 $prototype =~ m/^()([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1804 $prototype =~ m/^(\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1805 $prototype =~ m/^(\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1806 $prototype =~ m/^(\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1807 $prototype =~ m/^(\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1808 $prototype =~ m/^(\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1809 $prototype =~ m/^(\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1810 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+)\s+([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1811 $prototype =~ m/^(\w+\s+\w+\s+\w+\s+\w+\s*\*+)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/ ||
1812 $prototype =~ m/^(\w+\s+\w+\s*\*+\s*\w+\s*\*+\s*)\s*([a-zA-Z0-9_~:]+)\s*\(([^\{]*)\)/) {
1814 $declaration_name = $2;
1817 create_parameterlist($args, ',', $file, $declaration_name);
1819 print STDERR "${file}:$.: warning: cannot understand function prototype: '$prototype'\n";
1823 if ($identifier ne $declaration_name) {
1824 print STDERR "${file}:$.: warning: expecting prototype for $identifier(). Prototype was for $declaration_name() instead\n";
1828 my $prms = join " ", @parameterlist;
1829 check_sections($file, $declaration_name, "function", $sectcheck, $prms);
1831 # This check emits a lot of warnings at the moment, because many
1832 # functions don't have a 'Return' doc section. So until the number
1833 # of warnings goes sufficiently down, the check is only performed in
1835 # TODO: always perform the check.
1836 if ($verbose && !$noret) {
1837 check_return_section($file, $declaration_name, $return_type);
1840 # The function parser can be called with a typedef parameter.
1842 if ($return_type =~ /typedef/) {
1843 output_declaration($declaration_name,
1845 {'function' => $declaration_name,
1847 'module' => $modulename,
1848 'functiontype' => $return_type,
1849 'parameterlist' => \@parameterlist,
1850 'parameterdescs' => \%parameterdescs,
1851 'parametertypes' => \%parametertypes,
1852 'sectionlist' => \@sectionlist,
1853 'sections' => \%sections,
1854 'purpose' => $declaration_purpose
1857 output_declaration($declaration_name,
1859 {'function' => $declaration_name,
1860 'module' => $modulename,
1861 'functiontype' => $return_type,
1862 'parameterlist' => \@parameterlist,
1863 'parameterdescs' => \%parameterdescs,
1864 'parametertypes' => \%parametertypes,
1865 'sectionlist' => \@sectionlist,
1866 'sections' => \%sections,
1867 'purpose' => $declaration_purpose
1874 %parameterdescs = ();
1875 %parametertypes = ();
1876 @parameterlist = ();
1880 $struct_actual = "";
1883 $state = STATE_NORMAL;
1884 $inline_doc_state = STATE_INLINE_NA;
1887 sub tracepoint_munge($) {
1889 my $tracepointname = 0;
1890 my $tracepointargs = 0;
1892 if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
1893 $tracepointname = $1;
1895 if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
1896 $tracepointname = $1;
1898 if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
1899 $tracepointname = $2;
1901 $tracepointname =~ s/^\s+//; #strip leading whitespace
1902 if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
1903 $tracepointargs = $1;
1905 if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
1906 print STDERR "${file}:$.: warning: Unrecognized tracepoint format: \n".
1909 $prototype = "static inline void trace_$tracepointname($tracepointargs)";
1910 $identifier = "trace_$identifier";
1914 sub syscall_munge() {
1917 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
1918 ## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
1919 if ($prototype =~ m/SYSCALL_DEFINE0/) {
1921 ## $prototype = "long sys_$1(void)";
1924 $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
1925 if ($prototype =~ m/long (sys_.*?),/) {
1926 $prototype =~ s/,/\(/;
1928 $prototype =~ s/\)/\(void\)/;
1931 # now delete all of the odd-number commas in $prototype
1932 # so that arg types & arg names don't have a comma between them
1934 my $len = length($prototype);
1936 $len = 0; # skip the for-loop
1938 for (my $ix = 0; $ix < $len; $ix++) {
1939 if (substr($prototype, $ix, 1) eq ',') {
1941 if ($count % 2 == 1) {
1942 substr($prototype, $ix, 1) = ' ';
1948 sub process_proto_function($$) {
1952 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1954 if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
1957 elsif ($x =~ /([^\{]*)/) {
1961 if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
1962 $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
1963 $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1964 $prototype =~ s@^\s+@@gos; # strip leading spaces
1966 # Handle prototypes for function pointers like:
1967 # int (*pcs_config)(struct foo)
1968 $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
1970 if ($prototype =~ /SYSCALL_DEFINE/) {
1973 if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
1974 $prototype =~ /DEFINE_SINGLE_EVENT/)
1976 tracepoint_munge($file);
1978 dump_function($prototype, $file);
1983 sub process_proto_type($$) {
1987 $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
1988 $x =~ s@^\s+@@gos; # strip leading spaces
1989 $x =~ s@\s+$@@gos; # strip trailing spaces
1990 $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
1993 # To distinguish preprocessor directive from regular declaration later.
1998 if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
1999 if( length $prototype ) {
2002 $prototype .= $1 . $2;
2003 ($2 eq '{') && $brcount++;
2004 ($2 eq '}') && $brcount--;
2005 if (($2 eq ';') && ($brcount == 0)) {
2006 dump_declaration($prototype, $file);
2019 sub map_filename($) {
2021 my ($orig_file) = @_;
2023 if (defined($ENV{'SRCTREE'})) {
2024 $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
2029 if (defined($source_map{$file})) {
2030 $file = $source_map{$file};
2036 sub process_export_file($) {
2037 my ($orig_file) = @_;
2038 my $file = map_filename($orig_file);
2040 if (!open(IN,"<$file")) {
2041 print STDERR "Error: Cannot open file $file\n";
2047 if (/$export_symbol/) {
2048 next if (defined($nosymbol_table{$2}));
2049 $function_table{$2} = 1;
2057 # Parsers for the various processing states.
2059 # STATE_NORMAL: looking for the /** to begin everything.
2061 sub process_normal() {
2062 if (/$doc_start/o) {
2063 $state = STATE_NAME; # next line is always the function name
2065 $declaration_start_line = $. + 1;
2070 # STATE_NAME: Looking for the "name - description" line
2072 sub process_name($$) {
2076 if (/$doc_block/o) {
2077 $state = STATE_DOCBLOCK;
2079 $new_start_line = $.;
2082 $section = $section_intro;
2086 } elsif (/$doc_decl/o) {
2088 if (/\s*([\w\s]+?)(\(\))?\s*([-:].*)?$/) {
2091 if ($identifier =~ m/^(struct|union|enum|typedef)\b\s*(\S*)/) {
2095 $decl_type = 'function';
2096 $identifier =~ s/^define\s+//;
2098 $identifier =~ s/\s+$//;
2100 $state = STATE_BODY;
2101 # if there's no @param blocks need to set up default section
2104 $section = $section_default;
2105 $new_start_line = $. + 1;
2107 # strip leading/trailing/multiple spaces
2111 $descr =~ s/\s+/ /g;
2112 $declaration_purpose = $descr;
2113 $state = STATE_BODY_MAYBE;
2115 $declaration_purpose = "";
2118 if (($declaration_purpose eq "") && $verbose) {
2119 print STDERR "${file}:$.: warning: missing initial short description on line:\n";
2124 if ($identifier eq "") {
2125 print STDERR "${file}:$.: warning: wrong kernel-doc identifier on line:\n";
2128 $state = STATE_NORMAL;
2132 print STDERR "${file}:$.: info: Scanning doc for $decl_type $identifier\n";
2135 print STDERR "${file}:$.: warning: Cannot understand $_ on line $.",
2136 " - I thought it was a doc line\n";
2138 $state = STATE_NORMAL;
2144 # STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
2146 sub process_body($$) {
2149 # Until all named variable macro parameters are
2150 # documented using the bare name (`x`) rather than with
2151 # dots (`x...`), strip the dots:
2152 if ($section =~ /\w\.\.\.$/) {
2153 $section =~ s/\.\.\.$//;
2156 print STDERR "${file}:$.: warning: Variable macro arguments should be documented without dots\n";
2161 if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
2162 dump_section($file, $section, $contents);
2163 $section = $section_default;
2164 $new_start_line = $.;
2168 if (/$doc_sect/i) { # case insensitive for supported section names
2172 # map the supported section names to the canonical names
2173 if ($newsection =~ m/^description$/i) {
2174 $newsection = $section_default;
2175 } elsif ($newsection =~ m/^context$/i) {
2176 $newsection = $section_context;
2177 } elsif ($newsection =~ m/^returns?$/i) {
2178 $newsection = $section_return;
2179 } elsif ($newsection =~ m/^\@return$/) {
2180 # special: @return is a section, not a param description
2181 $newsection = $section_return;
2184 if (($contents ne "") && ($contents ne "\n")) {
2185 if (!$in_doc_sect && $verbose) {
2186 print STDERR "${file}:$.: warning: contents before sections\n";
2189 dump_section($file, $section, $contents);
2190 $section = $section_default;
2194 $state = STATE_BODY;
2195 $contents = $newcontents;
2196 $new_start_line = $.;
2197 while (substr($contents, 0, 1) eq " ") {
2198 $contents = substr($contents, 1);
2200 if ($contents ne "") {
2203 $section = $newsection;
2204 $leading_space = undef;
2205 } elsif (/$doc_end/) {
2206 if (($contents ne "") && ($contents ne "\n")) {
2207 dump_section($file, $section, $contents);
2208 $section = $section_default;
2211 # look for doc_com + <text> + doc_end:
2212 if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
2213 print STDERR "${file}:$.: warning: suspicious ending line: $_";
2218 $state = STATE_PROTO;
2220 $new_start_line = $. + 1;
2221 } elsif (/$doc_content/) {
2223 if ($section eq $section_context) {
2224 dump_section($file, $section, $contents);
2225 $section = $section_default;
2227 $new_start_line = $.;
2228 $state = STATE_BODY;
2230 if ($section ne $section_default) {
2231 $state = STATE_BODY_WITH_BLANK_LINE;
2233 $state = STATE_BODY;
2237 } elsif ($state == STATE_BODY_MAYBE) {
2238 # Continued declaration purpose
2239 chomp($declaration_purpose);
2240 $declaration_purpose .= " " . $1;
2241 $declaration_purpose =~ s/\s+/ /g;
2244 if ($section =~ m/^@/ || $section eq $section_context) {
2245 if (!defined $leading_space) {
2246 if ($cont =~ m/^(\s+)/) {
2247 $leading_space = $1;
2249 $leading_space = "";
2252 $cont =~ s/^$leading_space//;
2254 $contents .= $cont . "\n";
2257 # i dont know - bad line? ignore.
2258 print STDERR "${file}:$.: warning: bad line: $_";
2265 # STATE_PROTO: reading a function/whatever prototype.
2267 sub process_proto($$) {
2270 if (/$doc_inline_oneline/) {
2273 if ($contents ne "") {
2275 dump_section($file, $section, $contents);
2276 $section = $section_default;
2279 } elsif (/$doc_inline_start/) {
2280 $state = STATE_INLINE;
2281 $inline_doc_state = STATE_INLINE_NAME;
2282 } elsif ($decl_type eq 'function') {
2283 process_proto_function($_, $file);
2285 process_proto_type($_, $file);
2290 # STATE_DOCBLOCK: within a DOC: block.
2292 sub process_docblock($$) {
2296 dump_doc_section($file, $section, $contents);
2297 $section = $section_default;
2300 %parameterdescs = ();
2301 %parametertypes = ();
2302 @parameterlist = ();
2306 $state = STATE_NORMAL;
2307 } elsif (/$doc_content/) {
2309 $contents .= $blankline;
2311 $contents .= $1 . "\n";
2317 # STATE_INLINE: docbook comments within a prototype.
2319 sub process_inline($$) {
2322 # First line (state 1) needs to be a @parameter
2323 if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
2326 $new_start_line = $.;
2327 if ($contents ne "") {
2328 while (substr($contents, 0, 1) eq " ") {
2329 $contents = substr($contents, 1);
2333 $inline_doc_state = STATE_INLINE_TEXT;
2334 # Documentation block end */
2335 } elsif (/$doc_inline_end/) {
2336 if (($contents ne "") && ($contents ne "\n")) {
2337 dump_section($file, $section, $contents);
2338 $section = $section_default;
2341 $state = STATE_PROTO;
2342 $inline_doc_state = STATE_INLINE_NA;
2344 } elsif (/$doc_content/) {
2345 if ($inline_doc_state == STATE_INLINE_TEXT) {
2346 $contents .= $1 . "\n";
2347 # nuke leading blank lines
2348 if ($contents =~ /^\s*$/) {
2351 } elsif ($inline_doc_state == STATE_INLINE_NAME) {
2352 $inline_doc_state = STATE_INLINE_ERROR;
2353 print STDERR "${file}:$.: warning: ";
2354 print STDERR "Incorrect use of kernel-doc format: $_";
2361 sub process_file($) {
2363 my $initial_section_counter = $section_counter;
2364 my ($orig_file) = @_;
2366 $file = map_filename($orig_file);
2368 if (!open(IN_FILE,"<$file")) {
2369 print STDERR "Error: Cannot open file $file\n";
2376 $section_counter = 0;
2378 while (s/\\\s*$//) {
2381 # Replace tabs by spaces
2382 while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
2383 # Hand this line to the appropriate state handler
2384 if ($state == STATE_NORMAL) {
2386 } elsif ($state == STATE_NAME) {
2387 process_name($file, $_);
2388 } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
2389 $state == STATE_BODY_WITH_BLANK_LINE) {
2390 process_body($file, $_);
2391 } elsif ($state == STATE_INLINE) { # scanning for inline parameters
2392 process_inline($file, $_);
2393 } elsif ($state == STATE_PROTO) {
2394 process_proto($file, $_);
2395 } elsif ($state == STATE_DOCBLOCK) {
2396 process_docblock($file, $_);
2400 # Make sure we got something interesting.
2401 if ($initial_section_counter == $section_counter && $
2402 output_mode ne "none") {
2403 if ($output_selection == OUTPUT_INCLUDE) {
2404 print STDERR "${file}:1: warning: '$_' not found\n"
2405 for keys %function_table;
2408 print STDERR "${file}:1: warning: no structured comments found\n";
2415 if ($output_mode eq "rst") {
2416 get_sphinx_version() if (!$sphinx_major);
2419 $kernelversion = get_kernel_version();
2421 # generate a sequence of code that will splice in highlighting information
2422 # using the s// operator.
2423 for (my $k = 0; $k < @highlights; $k++) {
2424 my $pattern = $highlights[$k][0];
2425 my $result = $highlights[$k][1];
2426 # print STDERR "scanning pattern:$pattern, highlight:($result)\n";
2427 $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
2430 # Read the file that maps relative names to absolute names for
2431 # separate source and object directories and for shadow trees.
2432 if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
2433 my ($relname, $absname);
2434 while(<SOURCE_MAP>) {
2436 ($relname, $absname) = (split())[0..1];
2437 $relname =~ s:^/+::;
2438 $source_map{$relname} = $absname;
2443 if ($output_selection == OUTPUT_EXPORTED ||
2444 $output_selection == OUTPUT_INTERNAL) {
2446 push(@export_file_list, @ARGV);
2448 foreach (@export_file_list) {
2450 process_export_file($_);
2458 if ($verbose && $errors) {
2459 print STDERR "$errors errors\n";
2461 if ($verbose && $warnings) {
2462 print STDERR "$warnings warnings\n";
2465 if ($Werror && $warnings) {
2466 print STDERR "$warnings warnings as Errors\n";
2469 exit($output_mode eq "none" ? 0 : $errors)