When we have a kernel-doc comment, it should be properly formatted.
Since this is a task that can be easily automated, add a new target
which checks all comments for proper kernel-doc formatting.
The kernel-doc script is copied as-is from the Linux kernel.
Signed-off-by: Nico Boehr <nrb@xxxxxxxxxxxxx>
---
Makefile | 3 +
scripts/kernel-doc | 2526 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 2529 insertions(+)
create mode 100755 scripts/kernel-doc
diff --git a/Makefile b/Makefile
index 101c02803228..602910dda11b 100644
--- a/Makefile
+++ b/Makefile
@@ -144,3 +144,6 @@ cscope:
.PHONY: tags
tags:
ctags -R
+
+check-kerneldoc:
+ find . -name '*.[ch]' -exec scripts/kernel-doc -none {} +
diff --git a/scripts/kernel-doc b/scripts/kernel-doc
new file mode 100755
index 000000000000..6e199a745ccb
--- /dev/null
+++ b/scripts/kernel-doc
@@ -0,0 +1,2526 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
+
+use warnings;
+use strict;
+
+## Copyright (c) 1998 Michael Zucchi, All Rights Reserved ##
+## Copyright (C) 2000, 1 Tim Waugh <twaugh@xxxxxxxxxx> ##
+## Copyright (C) 2001 Simon Huggins ##
+## Copyright (C) 2005-2012 Randy Dunlap ##
+## Copyright (C) 2012 Dan Luedtke ##
+## ##
+## #define enhancements by Armin Kuster <akuster@xxxxxxxxxx> ##
+## Copyright (c) 2000 MontaVista Software, Inc. ##
+#
+# Copyright (C) 2022 Tomasz Warniełło (POD)
+
+use Pod::Usage qw/pod2usage/;
+
+=head1 NAME
+
+kernel-doc - Print formatted kernel documentation to stdout
+
+=head1 SYNOPSIS
+
+ kernel-doc [-h] [-v] [-Werror] [-Wall] [-Wreturn] [-Wshort-description] [-Wcontents-before-sections]
+ [ -man |
+ -rst [-sphinx-version VERSION] [-enable-lineno] |
+ -none
+ ]
+ [
+ -export |
+ -internal |
+ [-function NAME] ... |
+ [-nosymbol NAME] ...
+ ]
+ [-no-doc-sections]
+ [-export-file FILE] ...
+ FILE ...
+
+Run `kernel-doc -h` for details.
+
+=head1 DESCRIPTION
+
+Read C language source or header FILEs, extract embedded documentation comments,
+and print formatted documentation to standard output.
+
+The documentation comments are identified by the "/**" opening comment mark.
+
+See Documentation/doc-guide/kernel-doc.rst for the documentation comment syntax.
+
+=cut
+
+# more perldoc at the end of the file
+
+## init lots of data
+
+my $errors = 0;
+my $warnings = 0;
+my $anon_struct_union = 0;
+
+# match expressions used to find embedded type information
+my $type_constant = '\b``([^\`]+)``\b';
+my $type_constant2 = '\%([-_\w]+)';
+my $type_func = '(\w+)\(\)';
+my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
+my $type_param_ref = '([\!~]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
+my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params
+my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params
+my $type_env = '(\$\w+)';
+my $type_enum = '\&(enum\s*([_\w]+))';
+my $type_struct = '\&(struct\s*([_\w]+))';
+my $type_typedef = '\&(typedef\s*([_\w]+))';
+my $type_union = '\&(union\s*([_\w]+))';
+my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
+my $type_fallback = '\&([_\w]+)';
+my $type_member_func = $type_member . '\(\)';
+
+# Output conversion substitutions.
+# One for each output format
+
+# these are pretty rough
+my @highlights_man = (
+ [$type_constant, "\$1"],
+ [$type_constant2, "\$1"],
+ [$type_func, "\\\\fB\$1\\\\fP"],
+ [$type_enum, "\\\\fI\$1\\\\fP"],
+ [$type_struct, "\\\\fI\$1\\\\fP"],
+ [$type_typedef, "\\\\fI\$1\\\\fP"],
+ [$type_union, "\\\\fI\$1\\\\fP"],
+ [$type_param, "\\\\fI\$1\\\\fP"],
+ [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
+ [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
+ [$type_fallback, "\\\\fI\$1\\\\fP"]
+ );
+my $blankline_man = "";
+
+# rst-mode
+my @highlights_rst = (
+ [$type_constant, "``\$1``"],
+ [$type_constant2, "``\$1``"],
+ # Note: need to escape () to avoid func matching later
+ [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
+ [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
+ [$type_fp_param, "**\$1\\\\(\\\\)**"],
+ [$type_fp_param2, "**\$1\\\\(\\\\)**"],
+ [$type_func, "\$1()"],
+ [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
+ [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
+ [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
+ [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
+ # in rst this can refer to any type
+ [$type_fallback, "\\:c\\:type\\:`\$1`"],
+ [$type_param_ref, "**\$1\$2**"]
+ );
+my $blankline_rst = "\n";
+
+# read arguments
+if ($#ARGV == -1) {
+ pod2usage(
+ -message => "No arguments!\n",
+ -exitval => 1,
+ -verbose => 99,
+ -sections => 'SYNOPSIS',
+ -output => \*STDERR,
+ );
+}
+
+my $kernelversion;
+my ($sphinx_major, $sphinx_minor, $sphinx_patch);
+
+my $dohighlight = "";
+
+my $verbose = 0;
+my $Werror = 0;
+my $Wreturn = 0;
+my $Wshort_desc = 0;
+my $Wcontents_before_sections = 0;
+my $output_mode = "rst";
+my $output_preformatted = 0;
+my $no_doc_sections = 0;
+my $enable_lineno = 0;
+my @highlights = @highlights_rst;
+my $blankline = $blankline_rst;
+my $modulename = "Kernel API";
+
+use constant {
+ OUTPUT_ALL => 0, # output all symbols and doc sections
+ OUTPUT_INCLUDE => 1, # output only specified symbols
+ OUTPUT_EXPORTED => 2, # output exported symbols
+ OUTPUT_INTERNAL => 3, # output non-exported symbols
+};
+my $output_selection = OUTPUT_ALL;
+my $show_not_found = 0; # No longer used
+
+my @export_file_list;
+
+my @build_time;
+if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
+ (my $seconds = `date -d"${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
+ @build_time = gmtime($seconds);
+} else {
+ @build_time = localtime;
+}
+
+my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
+ 'July', 'August', 'September', 'October',
+ 'November', 'December')[$build_time[4]] .
+ " " . ($build_time[5]+1900);
+
+# Essentially these are globals.
+# They probably want to be tidied up, made more localised or something.
+# CAVEAT EMPTOR! Some of the others I localised may not want to be, which
+# could cause "use of undefined value" or other bugs.
+my ($function, %function_table, %parametertypes, $declaration_purpose);
+my %nosymbol_table = ();
+my $declaration_start_line;
+my ($type, $declaration_name, $return_type);
+my ($newsection, $newcontents, $prototype, $brcount, %source_map);
+
+if (defined($ENV{'KBUILD_VERBOSE'}) && $ENV{'KBUILD_VERBOSE'} =~ '1') {
+ $verbose = 1;
+}
+
+if (defined($ENV{'KCFLAGS'})) {
+ my $kcflags = "$ENV{'KCFLAGS'}";
+
+ if ($kcflags =~ /Werror/) {
+ $Werror = 1;
+ }
+}
+
+# reading this variable is for backwards compat just in case
+# someone was calling it with the variable from outside the
+# kernel's build system
+if (defined($ENV{'KDOC_WERROR'})) {
+ $Werror = "$ENV{'KDOC_WERROR'}";
+}
+# other environment variables are converted to command-line
+# arguments in cmd_checkdoc in the build system
+
+# Generated docbook code is inserted in a template at a point where
+# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
+# https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
+# We keep track of number of generated entries and generate a dummy
+# if needs be to ensure the expanded template can be postprocessed
+# into html.
+my $section_counter = 0;
+
+my $lineprefix="";
+
+# Parser states
+use constant {
+ STATE_NORMAL => 0, # normal code
+ STATE_NAME => 1, # looking for function name
+ STATE_BODY_MAYBE => 2, # body - or maybe more description
+ STATE_BODY => 3, # the body of the comment
+ STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
+ STATE_PROTO => 5, # scanning prototype
+ STATE_DOCBLOCK => 6, # documentation block
+ STATE_INLINE => 7, # gathering doc outside main block
+};
+my $state;
+my $in_doc_sect;
+my $leading_space;
+
+# Inline documentation state
+use constant {
+ STATE_INLINE_NA => 0, # not applicable ($state != STATE_INLINE)
+ STATE_INLINE_NAME => 1, # looking for member name (@foo:)
+ STATE_INLINE_TEXT => 2, # looking for member documentation
+ STATE_INLINE_END => 3, # done
+ STATE_INLINE_ERROR => 4, # error - Comment without header was found.
+ # Spit a warning as it's not
+ # proper kernel-doc and ignore the rest.
+};
+my $inline_doc_state;
+
+#declaration types: can be
+# 'function', 'struct', 'union', 'enum', 'typedef'
+my $decl_type;
+
+# Name of the kernel-doc identifier for non-DOC markups
+my $identifier;
+
+my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
+my $doc_end = '\*/';
+my $doc_com = '\s*\*\s*';
+my $doc_com_body = '\s*\* ?';
+my $doc_decl = $doc_com . '(\w+)';
+# @params and a strictly limited set of supported section names
+# Specifically:
+# Match @word:
+# @...:
+# @{section-name}:
+# while trying to not match literal block starts like "example::"
+#
+my $doc_sect = $doc_com .
+ '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:([^:].*)?$';
+my $doc_content = $doc_com_body . '(.*)';
+my $doc_block = $doc_com . 'DOC:\s*(.*)?';
+my $doc_inline_start = '^\s*/\*\*\s*$';
+my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
+my $doc_inline_end = '^\s*\*/\s*$';
+my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
+my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
+my $export_symbol_ns = '^\s*EXPORT_SYMBOL_NS(_GPL)?\s*\(\s*(\w+)\s*,\s*\w+\)\s*;';
+my $function_pointer = qr{([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)};
+my $attribute = qr{__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)}i;
+
+my %parameterdescs;
+my %parameterdesc_start_lines;
+my @parameterlist;
+my %sections;
+my @sectionlist;
+my %section_start_lines;
+my $sectcheck;
+my $struct_actual;
+
+my $contents = "";
+my $new_start_line = 0;
+
+# the canonical section names. see also $doc_sect above.
+my $section_default = "Description"; # default section
+my $section_intro = "Introduction";
+my $section = $section_default;
+my $section_context = "Context";
+my $section_return = "Return";
+
+my $undescribed = "-- undescribed --";
+
+reset_state();
+
+while ($ARGV[0] =~ m/^--?(.*)/) {
+ my $cmd = $1;
+ shift @ARGV;
+ if ($cmd eq "man") {
+ $output_mode = "man";
+ @highlights = @highlights_man;
+ $blankline = $blankline_man;
+ } elsif ($cmd eq "rst") {
+ $output_mode = "rst";
+ @highlights = @highlights_rst;
+ $blankline = $blankline_rst;
+ } elsif ($cmd eq "none") {
+ $output_mode = "none";
+ } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
+ $modulename = shift @ARGV;
+ } elsif ($cmd eq "function") { # to only output specific functions
+ $output_selection = OUTPUT_INCLUDE;
+ $function = shift @ARGV;
+ $function_table{$function} = 1;
+ } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
+ my $symbol = shift @ARGV;
+ $nosymbol_table{$symbol} = 1;
+ } elsif ($cmd eq "export") { # only exported symbols
+ $output_selection = OUTPUT_EXPORTED;
+ %function_table = ();
+ } elsif ($cmd eq "internal") { # only non-exported symbols
+ $output_selection = OUTPUT_INTERNAL;
+ %function_table = ();
+ } elsif ($cmd eq "export-file") {
+ my $file = shift @ARGV;
+ push(@export_file_list, $file);
+ } elsif ($cmd eq "v") {
+ $verbose = 1;
+ } elsif ($cmd eq "Werror") {
+ $Werror = 1;
+ } elsif ($cmd eq "Wreturn") {
+ $Wreturn = 1;
+ } elsif ($cmd eq "Wshort-desc") {
+ $Wshort_desc = 1;
+ } elsif ($cmd eq "Wcontents-before-sections") {
+ $Wcontents_before_sections = 1;
+ } elsif ($cmd eq "Wall") {
+ $Wreturn = 1;
+ $Wshort_desc = 1;
+ $Wcontents_before_sections = 1;
+ } elsif (($cmd eq "h") || ($cmd eq "help")) {
+ pod2usage(-exitval => 0, -verbose => 2);
+ } elsif ($cmd eq 'no-doc-sections') {
+ $no_doc_sections = 1;
+ } elsif ($cmd eq 'enable-lineno') {
+ $enable_lineno = 1;
+ } elsif ($cmd eq 'show-not-found') {
+ $show_not_found = 1; # A no-op but don't fail
+ } elsif ($cmd eq "sphinx-version") {
+ my $ver_string = shift @ARGV;
+ if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) {
+ $sphinx_major = $1;
+ if (defined($2)) {
+ $sphinx_minor = substr($2,1);
+ } else {
+ $sphinx_minor = 0;
+ }
+ if (defined($3)) {
+ $sphinx_patch = substr($3,1)
+ } else {
+ $sphinx_patch = 0;
+ }
+ } else {
+ die "Sphinx version should either major.minor or major.minor.patch format\n";
+ }
+ } else {
+ # Unknown argument
+ pod2usage(
+ -message => "Argument unknown!\n",
+ -exitval => 1,
+ -verbose => 99,
+ -sections => 'SYNOPSIS',
+ -output => \*STDERR,
+ );
+ }
+ if ($#ARGV < 0){
+ pod2usage(
+ -message => "FILE argument missing\n",
+ -exitval => 1,
+ -verbose => 99,
+ -sections => 'SYNOPSIS',
+ -output => \*STDERR,
+ );
+ }
+}
+
+# continue execution near EOF;
+
+# The C domain dialect changed on Sphinx 3. So, we need to check the
+# version in order to produce the right tags.
+sub findprog($)
+{
+ foreach(split(/:/, $ENV{PATH})) {
+ return "$_/$_[0]" if(-x "$_/$_[0]");
+ }
+}
+
+sub get_sphinx_version()
+{
+ my $ver;
+
+ my $cmd = "sphinx-build";
+ if (!findprog($cmd)) {
+ my $cmd = "sphinx-build3";
+ if (!findprog($cmd)) {
+ $sphinx_major = 1;
+ $sphinx_minor = 2;
+ $sphinx_patch = 0;
+ printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n",
+ $sphinx_major, $sphinx_minor, $sphinx_patch;
+ return;
+ }
+ }
+
+ open IN, "$cmd --version 2>&1 |";
+ while (<IN>) {
+ if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) {
+ $sphinx_major = $1;
+ $sphinx_minor = $2;
+ $sphinx_patch = $3;
+ last;
+ }
+ # Sphinx 1.2.x uses a different format
+ if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) {
+ $sphinx_major = $1;
+ $sphinx_minor = $2;
+ $sphinx_patch = $3;
+ last;
+ }
+ }
+ close IN;
+}
+
+# get kernel version from env
+sub get_kernel_version() {
+ my $version = 'unknown kernel version';
+
+ if (defined($ENV{'KERNELVERSION'})) {
+ $version = $ENV{'KERNELVERSION'};
+ }
+ return $version;
+}
+
+#
+sub print_lineno {
+ my $lineno = shift;
+ if ($enable_lineno && defined($lineno)) {
+ print ".. LINENO " . $lineno . "\n";
+ }
+}
+
+sub emit_warning {
+ my $location = shift;
+ my $msg = shift;
+ print STDERR "$location: warning: $msg";
+ ++$warnings;
+}
+##
+# dumps section contents to arrays/hashes intended for that purpose.
+#
+sub dump_section {
+ my $file = shift;
+ my $name = shift;
+ my $contents = join "\n", @_;
+
+ if ($name =~ m/$type_param/) {
+ $name = $1;
+ $parameterdescs{$name} = $contents;
+ $sectcheck = $sectcheck . $name . " ";
+ $parameterdesc_start_lines{$name} = $new_start_line;
+ $new_start_line = 0;
+ } elsif ($name eq "@\.\.\.") {
+ $name = "...";
+ $parameterdescs{$name} = $contents;
+ $sectcheck = $sectcheck . $name . " ";
+ $parameterdesc_start_lines{$name} = $new_start_line;
+ $new_start_line = 0;
+ } else {
+ if (defined($sections{$name}) && ($sections{$name} ne "")) {
+ # Only warn on user specified duplicate section names.
+ if ($name ne $section_default) {
+ emit_warning("${file}:$.", "duplicate section name '$name'\n");
+ }
+ $sections{$name} .= $contents;
+ } else {
+ $sections{$name} = $contents;
+ push @sectionlist, $name;
+ $section_start_lines{$name} = $new_start_line;
+ $new_start_line = 0;
+ }
+ }
+}
+
+##
+# dump DOC: section after checking that it should go out
+#
+sub dump_doc_section {
+ my $file = shift;
+ my $name = shift;
+ my $contents = join "\n", @_;
+
+ if ($no_doc_sections) {
+ return;
+ }
+
+ return if (defined($nosymbol_table{$name}));
+
+ if (($output_selection == OUTPUT_ALL) ||
+ (($output_selection == OUTPUT_INCLUDE) &&
+ defined($function_table{$name})))
+ {
+ dump_section($file, $name, $contents);
+ output_blockhead({'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'module' => $modulename,
+ 'content-only' => ($output_selection != OUTPUT_ALL), });
+ }
+}
+
+##
+# output function
+#
+# parameterdescs, a hash.
+# function => "function name"
+# parameterlist => @list of parameters
+# parameterdescs => %parameter descriptions
+# sectionlist => @list of sections
+# sections => %section descriptions
+#
+
+sub output_highlight {
+ my $contents = join "\n",@_;
+ my $line;
+
+# DEBUG
+# if (!defined $contents) {
+# use Carp;
+# confess "output_highlight got called with no args?\n";
+# }
+
+# print STDERR "contents b4:$contents\n";
+ eval $dohighlight;
+ die $@ if $@;
+# print STDERR "contents af:$contents\n";
+
+ foreach $line (split "\n", $contents) {
+ if (! $output_preformatted) {
+ $line =~ s/^\s*//;
+ }
+ if ($line eq ""){
+ if (! $output_preformatted) {
+ print $lineprefix, $blankline;
+ }
+ } else {
+ if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
+ print "\\&$line";
+ } else {
+ print $lineprefix, $line;
+ }
+ }
+ print "\n";
+ }
+}
+
+##
+# output function in man
+sub output_function_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
+
+ print ".SH SYNOPSIS\n";
+ if ($args{'functiontype'} ne "") {
+ print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
+ } else {
+ print ".B \"" . $args{'function'} . "\n";
+ }
+ $count = 0;
+ my $parenth = "(";
+ my $post = ",";
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ if ($count == $#{$args{'parameterlist'}}) {
+ $post = ");";
+ }
+ $type = $args{'parametertypes'}{$parameter};
+ if ($type =~ m/$function_pointer/) {
+ # pointer-to-function
+ print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
+ } else {
+ $type =~ s/([^\*])$/$1 /;
+ print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
+ }
+ $count++;
+ $parenth = "";
+ }
+
+ print ".SH ARGUMENTS\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print ".IP \"" . $parameter . "\" 12\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"", uc $section, "\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output enum in man
+sub output_enum_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
+
+ print ".SH SYNOPSIS\n";
+ print "enum " . $args{'enum'} . " {\n";
+ $count = 0;
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ print ".br\n.BI \" $parameter\"\n";
+ if ($count == $#{$args{'parameterlist'}}) {
+ print "\n};\n";
+ last;
+ }
+ else {
+ print ", \n.br\n";
+ }
+ $count++;
+ }
+
+ print ".SH Constants\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ print ".IP \"" . $parameter . "\" 12\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output struct in man
+sub output_struct_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+
+ print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
+
+ my $declaration = $args{'definition'};
+ $declaration =~ s/\t/ /g;
+ $declaration =~ s/\n/"\n.br\n.BI \"/g;
+ print ".SH SYNOPSIS\n";
+ print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
+ print ".BI \"$declaration\n};\n.br\n\n";
+
+ print ".SH Members\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ ($parameter =~ /^#/) && next;
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ print ".IP \"" . $parameter . "\" 12\n";
+ output_highlight($args{'parameterdescs'}{$parameter_name});
+ }
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output typedef in man
+sub output_typedef_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+
+ print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ print ".SH NAME\n";
+ print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+sub output_blockhead_man(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $count;
+
+ print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print ".SH \"$section\"\n";
+ output_highlight($args{'sections'}{$section});
+ }
+}
+
+##
+# output in restructured text
+#
+
+#
+# This could use some work; it's used to output the DOC: sections, and
+# starts by putting out the name of the doc section itself, but that tends
+# to duplicate a header already in the template file.
+#
+sub output_blockhead_rst(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ next if (defined($nosymbol_table{$section}));
+
+ if ($output_selection != OUTPUT_INCLUDE) {
+ print ".. _$section:\n\n";
+ print "**$section**\n\n";
+ }
+ print_lineno($section_start_lines{$section});
+ output_highlight_rst($args{'sections'}{$section});
+ print "\n";
+ }
+}
+
+#
+# Apply the RST highlights to a sub-block of text.
+#
+sub highlight_block($) {
+ # The dohighlight kludge requires the text be called $contents
+ my $contents = shift;
+ eval $dohighlight;
+ die $@ if $@;
+ return $contents;
+}
+
+#
+# Regexes used only here.
+#
+my $sphinx_literal = '^[^.].*::$';
+my $sphinx_cblock = '^\.\.\ +code-block::';
+
+sub output_highlight_rst {
+ my $input = join "\n",@_;
+ my $output = "";
+ my $line;
+ my $in_literal = 0;
+ my $litprefix;
+ my $block = "";
+
+ foreach $line (split "\n",$input) {
+ #
+ # If we're in a literal block, see if we should drop out
+ # of it. Otherwise pass the line straight through unmunged.
+ #
+ if ($in_literal) {
+ if (! ($line =~ /^\s*$/)) {
+ #
+ # If this is the first non-blank line in a literal
+ # block we need to figure out what the proper indent is.
+ #
+ if ($litprefix eq "") {
+ $line =~ /^(\s*)/;
+ $litprefix = '^' . $1;
+ $output .= $line . "\n";
+ } elsif (! ($line =~ /$litprefix/)) {
+ $in_literal = 0;
+ } else {
+ $output .= $line . "\n";
+ }
+ } else {
+ $output .= $line . "\n";
+ }
+ }
+ #
+ # Not in a literal block (or just dropped out)
+ #
+ if (! $in_literal) {
+ $block .= $line . "\n";
+ if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
+ $in_literal = 1;
+ $litprefix = "";
+ $output .= highlight_block($block);
+ $block = ""
+ }
+ }
+ }
+
+ if ($block) {
+ $output .= highlight_block($block);
+ }
+ foreach $line (split "\n", $output) {
+ print $lineprefix . $line . "\n";
+ }
+}
+
+sub output_function_rst(%) {
+ my %args = %{$_[0]};
+ my ($parameter, $section);
+ my $oldprefix = $lineprefix;
+ my $start = "";
+ my $is_macro = 0;
+
+ if ($sphinx_major < 3) {
+ if ($args{'typedef'}) {
+ print ".. c:type:: ". $args{'function'} . "\n\n";
+ print_lineno($declaration_start_line);
+ print " **Typedef**: ";
+ $lineprefix = "";
+ output_highlight_rst($args{'purpose'});
+ $start = "\n\n**Syntax**\n\n ``";
+ $is_macro = 1;
+ } else {
+ print ".. c:function:: ";
+ }
+ } else {
+ if ($args{'typedef'} || $args{'functiontype'} eq "") {
+ $is_macro = 1;
+ print ".. c:macro:: ". $args{'function'} . "\n\n";
+ } else {
+ print ".. c:function:: ";
+ }
+
+ if ($args{'typedef'}) {
+ print_lineno($declaration_start_line);
+ print " **Typedef**: ";
+ $lineprefix = "";
+ output_highlight_rst($args{'purpose'});
+ $start = "\n\n**Syntax**\n\n ``";
+ } else {
+ print "``" if ($is_macro);
+ }
+ }
+ if ($args{'functiontype'} ne "") {
+ $start .= $args{'functiontype'} . " " . $args{'function'} . " (";
+ } else {
+ $start .= $args{'function'} . " (";
+ }
+ print $start;
+
+ my $count = 0;
+ foreach my $parameter (@{$args{'parameterlist'}}) {
+ if ($count ne 0) {
+ print ", ";
+ }
+ $count++;
+ $type = $args{'parametertypes'}{$parameter};
+
+ if ($type =~ m/$function_pointer/) {
+ # pointer-to-function
+ print $1 . $parameter . ") (" . $2 . ")";
+ } else {
+ print $type;
+ }
+ }
+ if ($is_macro) {
+ print ")``\n\n";
+ } else {
+ print ")\n\n";
+ }
+ if (!$args{'typedef'}) {
+ print_lineno($declaration_start_line);
+ $lineprefix = " ";
+ output_highlight_rst($args{'purpose'});
+ print "\n";
+ }
+
+ #
+ # Put our descriptive text into a container (thus an HTML <div>) to help
+ # set the function prototypes apart.
+ #
+ print ".. container:: kernelindent\n\n";
+ $lineprefix = " ";
+ print $lineprefix . "**Parameters**\n\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+ $type = $args{'parametertypes'}{$parameter};
+
+ if ($type ne "") {
+ print $lineprefix . "``$type``\n";
+ } else {
+ print $lineprefix . "``$parameter``\n";
+ }
+
+ print_lineno($parameterdesc_start_lines{$parameter_name});
+
+ $lineprefix = " ";
+ if (defined($args{'parameterdescs'}{$parameter_name}) &&
+ $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
+ output_highlight_rst($args{'parameterdescs'}{$parameter_name});
+ } else {
+ print $lineprefix . "*undescribed*\n";
+ }
+ $lineprefix = " ";
+ print "\n";
+ }
+
+ output_section_rst(@_);
+ $lineprefix = $oldprefix;
+}
+
+sub output_section_rst(%) {
+ my %args = %{$_[0]};
+ my $section;
+ my $oldprefix = $lineprefix;
+
+ foreach $section (@{$args{'sectionlist'}}) {
+ print $lineprefix . "**$section**\n\n";
+ print_lineno($section_start_lines{$section});
+ output_highlight_rst($args{'sections'}{$section});
+ print "\n";
+ }
+ print "\n";
+}
+
+sub output_enum_rst(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $oldprefix = $lineprefix;
+ my $count;
+ my $outer;
+
+ if ($sphinx_major < 3) {
+ my $name = "enum " . $args{'enum'};
+ print "\n\n.. c:type:: " . $name . "\n\n";
+ } else {
+ my $name = $args{'enum'};
+ print "\n\n.. c:enum:: " . $name . "\n\n";
+ }
+ print_lineno($declaration_start_line);
+ $lineprefix = " ";
+ output_highlight_rst($args{'purpose'});
+ print "\n";
+
+ print ".. container:: kernelindent\n\n";
+ $outer = $lineprefix . " ";
+ $lineprefix = $outer . " ";
+ print $outer . "**Constants**\n\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ print $outer . "``$parameter``\n";
+
+ if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
+ output_highlight_rst($args{'parameterdescs'}{$parameter});
+ } else {
+ print $lineprefix . "*undescribed*\n";
+ }
+ print "\n";
+ }
+ print "\n";
+ $lineprefix = $oldprefix;
+ output_section_rst(@_);
+}
+
+sub output_typedef_rst(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $oldprefix = $lineprefix;
+ my $name;
+
+ if ($sphinx_major < 3) {
+ $name = "typedef " . $args{'typedef'};
+ } else {
+ $name = $args{'typedef'};
+ }
+ print "\n\n.. c:type:: " . $name . "\n\n";
+ print_lineno($declaration_start_line);
+ $lineprefix = " ";
+ output_highlight_rst($args{'purpose'});
+ print "\n";
+
+ $lineprefix = $oldprefix;
+ output_section_rst(@_);
+}
+
+sub output_struct_rst(%) {
+ my %args = %{$_[0]};
+ my ($parameter);
+ my $oldprefix = $lineprefix;
+
+ if ($sphinx_major < 3) {
+ my $name = $args{'type'} . " " . $args{'struct'};
+ print "\n\n.. c:type:: " . $name . "\n\n";
+ } else {
+ my $name = $args{'struct'};
+ if ($args{'type'} eq 'union') {
+ print "\n\n.. c:union:: " . $name . "\n\n";
+ } else {
+ print "\n\n.. c:struct:: " . $name . "\n\n";
+ }
+ }
+ print_lineno($declaration_start_line);
+ $lineprefix = " ";
+ output_highlight_rst($args{'purpose'});
+ print "\n";
+
+ print ".. container:: kernelindent\n\n";
+ print $lineprefix . "**Definition**::\n\n";
+ my $declaration = $args{'definition'};
+ $lineprefix = $lineprefix . " ";
+ $declaration =~ s/\t/$lineprefix/g;
+ print $lineprefix . $args{'type'} . " " . $args{'struct'} . " {\n$declaration" . $lineprefix . "};\n\n";
+
+ $lineprefix = " ";
+ print $lineprefix . "**Members**\n\n";
+ foreach $parameter (@{$args{'parameterlist'}}) {
+ ($parameter =~ /^#/) && next;
+
+ my $parameter_name = $parameter;
+ $parameter_name =~ s/\[.*//;
+
+ ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
+ $type = $args{'parametertypes'}{$parameter};
+ print_lineno($parameterdesc_start_lines{$parameter_name});
+ print $lineprefix . "``" . $parameter . "``\n";
+ $lineprefix = " ";
+ output_highlight_rst($args{'parameterdescs'}{$parameter_name});
+ $lineprefix = " ";
+ print "\n";
+ }
+ print "\n";
+
+ $lineprefix = $oldprefix;
+ output_section_rst(@_);
+}
+
+## none mode output functions
+
+sub output_function_none(%) {
+}
+
+sub output_enum_none(%) {
+}
+
+sub output_typedef_none(%) {
+}
+
+sub output_struct_none(%) {
+}
+
+sub output_blockhead_none(%) {
+}
+
+##
+# generic output function for all types (function, struct/union, typedef, enum);
+# calls the generated, variable output_ function name based on
+# functype and output_mode
+sub output_declaration {
+ no strict 'refs';
+ my $name = shift;
+ my $functype = shift;
+ my $func = "output_${functype}_$output_mode";
+
+ return if (defined($nosymbol_table{$name}));
+
+ if (($output_selection == OUTPUT_ALL) ||
+ (($output_selection == OUTPUT_INCLUDE ||
+ $output_selection == OUTPUT_EXPORTED) &&
+ defined($function_table{$name})) ||
+ ($output_selection == OUTPUT_INTERNAL &&
+ !($functype eq "function" && defined($function_table{$name}))))
+ {
+ &$func(@_);
+ $section_counter++;
+ }
+}
+
+##
+# generic output function - calls the right one based on current output mode.
+sub output_blockhead {
+ no strict 'refs';
+ my $func = "output_blockhead_" . $output_mode;
+ &$func(@_);
+ $section_counter++;
+}
+
+##
+# takes a declaration (struct, union, enum, typedef) and
+# invokes the right handler. NOT called for functions.
+sub dump_declaration($$) {
+ no strict 'refs';
+ my ($prototype, $file) = @_;
+ my $func = "dump_" . $decl_type;
+ &$func(@_);
+}
+
+sub dump_union($$) {
+ dump_struct(@_);
+}
+
+sub dump_struct($$) {
+ my $x = shift;
+ my $file = shift;
+ my $decl_type;
+ my $members;
+ my $type = qr{struct|union};
+ # For capturing struct/union definition body, i.e. "{members*}qualifiers*"
+ my $qualifiers = qr{$attribute|__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned};
+ my $definition_body = qr{\{(.*)\}\s*$qualifiers*};
+ my $struct_members = qr{($type)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;};
+
+ if ($x =~ /($type)\s+(\w+)\s*$definition_body/) {
+ $decl_type = $1;
+ $declaration_name = $2;
+ $members = $3;
+ } elsif ($x =~ /typedef\s+($type)\s*$definition_body\s*(\w+)\s*;/) {
+ $decl_type = $1;
+ $declaration_name = $3;
+ $members = $2;
+ }
+
+ if ($members) {
+ if ($identifier ne $declaration_name) {
+ emit_warning("${file}:$.", "expecting prototype for $decl_type $identifier. Prototype was for $decl_type $declaration_name instead\n");
+ return;
+ }
+
+ # ignore members marked private:
+ $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
+ $members =~ s/\/\*\s*private:.*//gosi;
+ # strip comments:
+ $members =~ s/\/\*.*?\*\///gos;
+ # strip attributes
+ $members =~ s/\s*$attribute/ /gi;
+ $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
+ $members =~ s/\s*__packed\s*/ /gos;
+ $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
+ $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
+ $members =~ s/\s*____cacheline_aligned/ /gos;
+ # unwrap struct_group():
+ # - first eat non-declaration parameters and rewrite for final match
+ # - then remove macro, outer parens, and trailing semicolon
+ $members =~ s/\bstruct_group\s*\(([^,]*,)/STRUCT_GROUP(/gos;
+ $members =~ s/\bstruct_group_(attr|tagged)\s*\(([^,]*,){2}/STRUCT_GROUP(/gos;
+ $members =~ s/\b__struct_group\s*\(([^,]*,){3}/STRUCT_GROUP(/gos;
+ $members =~ s/\bSTRUCT_GROUP(\(((?:(?>[^)(]+)|(?1))*)\))[^;]*;/$2/gos;
+
+ my $args = qr{([^,)]+)};
+ # replace DECLARE_BITMAP
+ $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
+ $members =~ s/DECLARE_PHY_INTERFACE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, PHY_INTERFACE_MODE_MAX)/gos;
+ $members =~ s/DECLARE_BITMAP\s*\($args,\s*$args\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
+ # replace DECLARE_HASHTABLE
+ $members =~ s/DECLARE_HASHTABLE\s*\($args,\s*$args\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
+ # replace DECLARE_KFIFO
+ $members =~ s/DECLARE_KFIFO\s*\($args,\s*$args,\s*$args\)/$2 \*$1/gos;
+ # replace DECLARE_KFIFO_PTR
+ $members =~ s/DECLARE_KFIFO_PTR\s*\($args,\s*$args\)/$2 \*$1/gos;
+ # replace DECLARE_FLEX_ARRAY
+ $members =~ s/(?:__)?DECLARE_FLEX_ARRAY\s*\($args,\s*$args\)/$1 $2\[\]/gos;
+ #replace DEFINE_DMA_UNMAP_ADDR
+ $members =~ s/DEFINE_DMA_UNMAP_ADDR\s*\($args\)/dma_addr_t $1/gos;
+ #replace DEFINE_DMA_UNMAP_LEN
+ $members =~ s/DEFINE_DMA_UNMAP_LEN\s*\($args\)/__u32 $1/gos;
+ my $declaration = $members;
+
+ # Split nested struct/union elements as newer ones
+ while ($members =~ m/$struct_members/) {
+ my $newmember;
+ my $maintype = $1;
+ my $ids = $4;
+ my $content = $3;
+ foreach my $id(split /,/, $ids) {
+ $newmember .= "$maintype $id; ";
+
+ $id =~ s/[:\[].*//;
+ $id =~ s/^\s*\**(\S+)\s*/$1/;
+ foreach my $arg (split /;/, $content) {
+ next if ($arg =~ m/^\s*$/);
+ if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
+ # pointer-to-function
+ my $type = $1;
+ my $name = $2;
+ my $extra = $3;
+ next if (!$name);
+ if ($id =~ m/^\s*$/) {
+ # anonymous struct/union
+ $newmember .= "$type$name$extra; ";
+ } else {
+ $newmember .= "$type$id.$name$extra; ";
+ }
+ } else {
+ my $type;
+ my $names;
+ $arg =~ s/^\s+//;
+ $arg =~ s/\s+$//;
+ # Handle bitmaps
+ $arg =~ s/:\s*\d+\s*//g;
+ # Handle arrays
+ $arg =~ s/\[.*\]//g;
+ # The type may have multiple words,
+ # and multiple IDs can be defined, like:
+ # const struct foo, *bar, foobar
+ # So, we remove spaces when parsing the
+ # names, in order to match just names
+ # and commas for the names
+ $arg =~ s/\s*,\s*/,/g;
+ if ($arg =~ m/(.*)\s+([\S+,]+)/) {
+ $type = $1;
+ $names = $2;
+ } else {
+ $newmember .= "$arg; ";
+ next;
+ }
+ foreach my $name (split /,/, $names) {
+ $name =~ s/^\s*\**(\S+)\s*/$1/;
+ next if (($name =~ m/^\s*$/));
+ if ($id =~ m/^\s*$/) {
+ # anonymous struct/union
+ $newmember .= "$type $name; ";
+ } else {
+ $newmember .= "$type $id.$name; ";
+ }
+ }
+ }
+ }
+ }
+ $members =~ s/$struct_members/$newmember/;
+ }
+
+ # Ignore other nested elements, like enums
+ $members =~ s/(\{[^\{\}]*\})//g;
+
+ create_parameterlist($members, ';', $file, $declaration_name);
+ check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
+
+ # Adjust declaration for better display
+ $declaration =~ s/([\{;])/$1\n/g;
+ $declaration =~ s/\}\s+;/};/g;
+ # Better handle inlined enums
+ do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
+
+ my @def_args = split /\n/, $declaration;
+ my $level = 1;
+ $declaration = "";
+ foreach my $clause (@def_args) {
+ $clause =~ s/^\s+//;
+ $clause =~ s/\s+$//;
+ $clause =~ s/\s+/ /;
+ next if (!$clause);
+ $level-- if ($clause =~ m/(\})/ && $level > 1);
+ if (!($clause =~ m/^\s*#/)) {
+ $declaration .= "\t" x $level;
+ }
+ $declaration .= "\t" . $clause . "\n";
+ $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
+ }
+ output_declaration($declaration_name,
+ 'struct',
+ {'struct' => $declaration_name,
+ 'module' => $modulename,
+ 'definition' => $declaration,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'parametertypes' => \%parametertypes,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose,
+ 'type' => $decl_type
+ });
+ }
+ else {
+ print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
+ ++$errors;
+ }
+}
+
+
+sub show_warnings($$) {
+ my $functype = shift;
+ my $name = shift;
+
+ return 0 if (defined($nosymbol_table{$name}));
+
+ return 1 if ($output_selection == OUTPUT_ALL);
+
+ if ($output_selection == OUTPUT_EXPORTED) {
+ if (defined($function_table{$name})) {
+ return 1;
+ } else {
+ return 0;
+ }
+ }
+ if ($output_selection == OUTPUT_INTERNAL) {
+ if (!($functype eq "function" && defined($function_table{$name}))) {
+ return 1;
+ } else {
+ return 0;
+ }
+ }
+ if ($output_selection == OUTPUT_INCLUDE) {
+ if (defined($function_table{$name})) {
+ return 1;
+ } else {
+ return 0;
+ }
+ }
+ die("Please add the new output type at show_warnings()");
+}
+
+sub dump_enum($$) {
+ my $x = shift;
+ my $file = shift;
+ my $members;
+
+ # ignore members marked private:
+ $x =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
+ $x =~ s/\/\*\s*private:.*}/}/gosi;
+
+ $x =~ s@/\*.*?\*/@@gos; # strip comments.
+ # strip #define macros inside enums
+ $x =~ s@#\s*((define|ifdef)\s+|endif)[^;]*;@@gos;
+
+ if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
+ $declaration_name = $2;
+ $members = $1;
+ } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
+ $declaration_name = $1;
+ $members = $2;
+ }
+
+ if ($members) {
+ if ($identifier ne $declaration_name) {
+ if ($identifier eq "") {
+ emit_warning("${file}:$.", "wrong kernel-doc identifier on line:\n");
+ } else {
+ emit_warning("${file}:$.", "expecting prototype for enum $identifier. Prototype was for enum $declaration_name instead\n");
+ }
+ return;
+ }
+ $declaration_name = "(anonymous)" if ($declaration_name eq "");
+
+ my %_members;
+
+ $members =~ s/\s+$//;
+ $members =~ s/\([^;]*?[\)]//g;
+
+ foreach my $arg (split ',', $members) {
+ $arg =~ s/^\s*(\w+).*/$1/;
+ push @parameterlist, $arg;
+ if (!$parameterdescs{$arg}) {
+ $parameterdescs{$arg} = $undescribed;
+ if (show_warnings("enum", $declaration_name)) {
+ emit_warning("${file}:$.", "Enum value '$arg' not described in enum '$declaration_name'\n");
+ }
+ }
+ $_members{$arg} = 1;
+ }
+
+ while (my ($k, $v) = each %parameterdescs) {
+ if (!exists($_members{$k})) {
+ if (show_warnings("enum", $declaration_name)) {
+ emit_warning("${file}:$.", "Excess enum value '$k' description in '$declaration_name'\n");
+ }
+ }
+ }
+
+ output_declaration($declaration_name,
+ 'enum',
+ {'enum' => $declaration_name,
+ 'module' => $modulename,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ } else {
+ print STDERR "${file}:$.: error: Cannot parse enum!\n";
+ ++$errors;
+ }
+}
+
+my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x;
+my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
+my $typedef_args = qr { \s*\((.*)\); }x;
+
+my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
+my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
+
+sub dump_typedef($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@/\*.*?\*/@@gos; # strip comments.
+
+ # Parse function typedef prototypes
+ if ($x =~ $typedef1 || $x =~ $typedef2) {
+ $return_type = $1;
+ $declaration_name = $2;
+ my $args = $3;
+ $return_type =~ s/^\s+//;
+
+ if ($identifier ne $declaration_name) {
+ emit_warning("${file}:$.", "expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n");
+ return;
+ }
+
+ create_parameterlist($args, ',', $file, $declaration_name);
+
+ output_declaration($declaration_name,
+ 'function',
+ {'function' => $declaration_name,
+ 'typedef' => 1,
+ 'module' => $modulename,
+ 'functiontype' => $return_type,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'parametertypes' => \%parametertypes,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ return;
+ }
+
+ while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
+ $x =~ s/\(*.\)\s*;$/;/;
+ $x =~ s/\[*.\]\s*;$/;/;
+ }
+
+ if ($x =~ /typedef.*\s+(\w+)\s*;/) {
+ $declaration_name = $1;
+
+ if ($identifier ne $declaration_name) {
+ emit_warning("${file}:$.", "expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n");
+ return;
+ }
+
+ output_declaration($declaration_name,
+ 'typedef',
+ {'typedef' => $declaration_name,
+ 'module' => $modulename,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ }
+ else {
+ print STDERR "${file}:$.: error: Cannot parse typedef!\n";
+ ++$errors;
+ }
+}
+
+sub save_struct_actual($) {
+ my $actual = shift;
+
+ # strip all spaces from the actual param so that it looks like one string item
+ $actual =~ s/\s*//g;
+ $struct_actual = $struct_actual . $actual . " ";
+}
+
+sub create_parameterlist($$$$) {
+ my $args = shift;
+ my $splitter = shift;
+ my $file = shift;
+ my $declaration_name = shift;
+ my $type;
+ my $param;
+
+ # temporarily replace commas inside function pointer definition
+ my $arg_expr = qr{\([^\),]+};
+ while ($args =~ /$arg_expr,/) {
+ $args =~ s/($arg_expr),/$1#/g;
+ }
+
+ foreach my $arg (split($splitter, $args)) {
+ # strip comments
+ $arg =~ s/\/\*.*\*\///;
+ # ignore argument attributes
+ $arg =~ s/\sPOS0?\s/ /;
+ # strip leading/trailing spaces
+ $arg =~ s/^\s*//;
+ $arg =~ s/\s*$//;
+ $arg =~ s/\s+/ /;
+
+ if ($arg =~ /^#/) {
+ # Treat preprocessor directive as a typeless variable just to fill
+ # corresponding data structures "correctly". Catch it later in
+ # output_* subs.
+ push_parameter($arg, "", "", $file);
+ } elsif ($arg =~ m/\(.+\)\s*\(/) {
+ # pointer-to-function
+ $arg =~ tr/#/,/;
+ $arg =~ m/[^\(]+\(\*?\s*([\w\[\]\.]*)\s*\)/;
+ $param = $1;
+ $type = $arg;
+ $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
+ save_struct_actual($param);
+ push_parameter($param, $type, $arg, $file, $declaration_name);
+ } elsif ($arg) {
+ $arg =~ s/\s*:\s*/:/g;
+ $arg =~ s/\s*\[/\[/g;
+
+ my @args = split('\s*,\s*', $arg);
+ if ($args[0] =~ m/\*/) {
+ $args[0] =~ s/(\*+)\s*/ $1/;
+ }
+
+ my @first_arg;
+ if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
+ shift @args;
+ push(@first_arg, split('\s+', $1));
+ push(@first_arg, $2);
+ } else {
+ @first_arg = split('\s+', shift @args);
+ }
+
+ unshift(@args, pop @first_arg);
+ $type = join " ", @first_arg;
+
+ foreach $param (@args) {
+ if ($param =~ m/^(\*+)\s*(.*)/) {
+ save_struct_actual($2);
+
+ push_parameter($2, "$type $1", $arg, $file, $declaration_name);
+ }
+ elsif ($param =~ m/(.*?):(\d+)/) {
+ if ($type ne "") { # skip unnamed bit-fields
+ save_struct_actual($1);
+ push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
+ }
+ }
+ else {
+ save_struct_actual($param);
+ push_parameter($param, $type, $arg, $file, $declaration_name);
+ }
+ }
+ }
+ }
+}
+
+sub push_parameter($$$$$) {
+ my $param = shift;
+ my $type = shift;
+ my $org_arg = shift;
+ my $file = shift;
+ my $declaration_name = shift;
+
+ if (($anon_struct_union == 1) && ($type eq "") &&
+ ($param eq "}")) {
+ return; # ignore the ending }; from anon. struct/union
+ }
+
+ $anon_struct_union = 0;
+ $param =~ s/[\[\)].*//;
+
+ if ($type eq "" && $param =~ /\.\.\.$/)
+ {
+ if (!$param =~ /\w\.\.\.$/) {
+ # handles unnamed variable parameters
+ $param = "...";
+ }
+ elsif ($param =~ /\w\.\.\.$/) {
+ # for named variable parameters of the form `x...`, remove the dots
+ $param =~ s/\.\.\.$//;
+ }
+ if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
+ $parameterdescs{$param} = "variable arguments";
+ }
+ }
+ elsif ($type eq "" && ($param eq "" or $param eq "void"))
+ {
+ $param="void";
+ $parameterdescs{void} = "no arguments";
+ }
+ elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
+ # handle unnamed (anonymous) union or struct:
+ {
+ $type = $param;
+ $param = "{unnamed_" . $param . "}";
+ $parameterdescs{$param} = "anonymous\n";
+ $anon_struct_union = 1;
+ }
+
+ # warn if parameter has no description
+ # (but ignore ones starting with # as these are not parameters
+ # but inline preprocessor statements);
+ # Note: It will also ignore void params and unnamed structs/unions
+ if (!defined $parameterdescs{$param} && $param !~ /^#/) {
+ $parameterdescs{$param} = $undescribed;
+
+ if (show_warnings($type, $declaration_name) && $param !~ /\./) {
+ emit_warning("${file}:$.", "Function parameter or member '$param' not described in '$declaration_name'\n");
+ }
+ }
+
+ # strip spaces from $param so that it is one continuous string
+ # on @parameterlist;
+ # this fixes a problem where check_sections() cannot find
+ # a parameter like "addr[6 + 2]" because it actually appears
+ # as "addr[6", "+", "2]" on the parameter list;
+ # but it's better to maintain the param string unchanged for output,
+ # so just weaken the string compare in check_sections() to ignore
+ # "[blah" in a parameter string;
+ ###$param =~ s/\s*//g;
+ push @parameterlist, $param;
+ $org_arg =~ s/\s\s+/ /g;
+ $parametertypes{$param} = $org_arg;
+}
+
+sub check_sections($$$$$) {
+ my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
+ my @sects = split ' ', $sectcheck;
+ my @prms = split ' ', $prmscheck;
+ my $err;
+ my ($px, $sx);
+ my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
+
+ foreach $sx (0 .. $#sects) {
+ $err = 1;
+ foreach $px (0 .. $#prms) {
+ $prm_clean = $prms[$px];
+ $prm_clean =~ s/\[.*\]//;
+ $prm_clean =~ s/$attribute//i;
+ # ignore array size in a parameter string;
+ # however, the original param string may contain
+ # spaces, e.g.: addr[6 + 2]
+ # and this appears in @prms as "addr[6" since the
+ # parameter list is split at spaces;
+ # hence just ignore "[..." for the sections check;
+ $prm_clean =~ s/\[.*//;
+
+ ##$prm_clean =~ s/^\**//;
+ if ($prm_clean eq $sects[$sx]) {
+ $err = 0;
+ last;
+ }
+ }
+ if ($err) {
+ if ($decl_type eq "function") {
+ emit_warning("${file}:$.",
+ "Excess function parameter " .
+ "'$sects[$sx]' " .
+ "description in '$decl_name'\n");
+ }
+ }
+ }
+}
+
+##
+# Checks the section describing the return value of a function.
+sub check_return_section {
+ my $file = shift;
+ my $declaration_name = shift;
+ my $return_type = shift;
+
+ # Ignore an empty return type (It's a macro)
+ # Ignore functions with a "void" return type. (But don't ignore "void *")
+ if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
+ return;
+ }
+
+ if (!defined($sections{$section_return}) ||
+ $sections{$section_return} eq "") {
+ emit_warning("${file}:$.",
+ "No description found for return value of " .
+ "'$declaration_name'\n");
+ }
+}
+
+##
+# takes a function prototype and the name of the current file being
+# processed and spits out all the details stored in the global
+# arrays/hashes.
+sub dump_function($$) {
+ my $prototype = shift;
+ my $file = shift;
+ my $noret = 0;
+
+ print_lineno($new_start_line);
+
+ $prototype =~ s/^static +//;
+ $prototype =~ s/^extern +//;
+ $prototype =~ s/^asmlinkage +//;
+ $prototype =~ s/^inline +//;
+ $prototype =~ s/^__inline__ +//;
+ $prototype =~ s/^__inline +//;
+ $prototype =~ s/^__always_inline +//;
+ $prototype =~ s/^noinline +//;
+ $prototype =~ s/^__FORTIFY_INLINE +//;
+ $prototype =~ s/__init +//;
+ $prototype =~ s/__init_or_module +//;
+ $prototype =~ s/__deprecated +//;
+ $prototype =~ s/__flatten +//;
+ $prototype =~ s/__meminit +//;
+ $prototype =~ s/__must_check +//;
+ $prototype =~ s/__weak +//;
+ $prototype =~ s/__sched +//;
+ $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
+ $prototype =~ s/__(?:re)?alloc_size\s*\(\s*\d+\s*(?:,\s*\d+\s*)?\) +//;
+ $prototype =~ s/__diagnose_as\s*\(\s*\S+\s*(?:,\s*\d+\s*)*\) +//;
+ my $define = $prototype =~ s/^#\s*define\s+//; #ak added
+ $prototype =~ s/__attribute_const__ +//;
+ $prototype =~ s/__attribute__\s*\(\(
+ (?:
+ [\w\s]++ # attribute name
+ (?:\([^)]*+\))? # attribute arguments
+ \s*+,? # optional comma at the end
+ )+
+ \)\)\s+//x;
+
+ # Yes, this truly is vile. We are looking for:
+ # 1. Return type (may be nothing if we're looking at a macro)
+ # 2. Function name
+ # 3. Function parameters.
+ #
+ # All the while we have to watch out for function pointer parameters
+ # (which IIRC is what the two sections are for), C types (these
+ # regexps don't even start to express all the possibilities), and
+ # so on.
+ #
+ # If you mess with these regexps, it's a good idea to check that
+ # the following functions' documentation still comes out right:
+ # - parport_register_device (function pointer parameters)
+ # - atomic_set (macro)
+ # - pci_match_device, __copy_to_user (long return type)
+ my $name = qr{[a-zA-Z0-9_~:]+};
+ my $prototype_end1 = qr{[^\(]*};
+ my $prototype_end2 = qr{[^\{]*};
+ my $prototype_end = qr{\(($prototype_end1|$prototype_end2)\)};
+ my $type1 = qr{[\w\s]+};
+ my $type2 = qr{$type1\*+};
+
+ if ($define && $prototype =~ m/^()($name)\s+/) {
+ # This is an object-like macro, it has no return type and no parameter
+ # list.
+ # Function-like macros are not allowed to have spaces between
+ # declaration_name and opening parenthesis (notice the \s+).
+ $return_type = $1;
+ $declaration_name = $2;
+ $noret = 1;
+ } elsif ($prototype =~ m/^()($name)\s*$prototype_end/ ||
+ $prototype =~ m/^($type1)\s+($name)\s*$prototype_end/ ||
+ $prototype =~ m/^($type2+)\s*($name)\s*$prototype_end/) {
+ $return_type = $1;
+ $declaration_name = $2;
+ my $args = $3;
+
+ create_parameterlist($args, ',', $file, $declaration_name);
+ } else {
+ emit_warning("${file}:$.", "cannot understand function prototype: '$prototype'\n");
+ return;
+ }
+
+ if ($identifier ne $declaration_name) {
+ emit_warning("${file}:$.", "expecting prototype for $identifier(). Prototype was for $declaration_name() instead\n");
+ return;
+ }
+
+ my $prms = join " ", @parameterlist;
+ check_sections($file, $declaration_name, "function", $sectcheck, $prms);
+
+ # This check emits a lot of warnings at the moment, because many
+ # functions don't have a 'Return' doc section. So until the number
+ # of warnings goes sufficiently down, the check is only performed in
+ # -Wreturn mode.
+ # TODO: always perform the check.
+ if ($Wreturn && !$noret) {
+ check_return_section($file, $declaration_name, $return_type);
+ }
+
+ # The function parser can be called with a typedef parameter.
+ # Handle it.
+ if ($return_type =~ /typedef/) {
+ output_declaration($declaration_name,
+ 'function',
+ {'function' => $declaration_name,
+ 'typedef' => 1,
+ 'module' => $modulename,
+ 'functiontype' => $return_type,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'parametertypes' => \%parametertypes,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ } else {
+ output_declaration($declaration_name,
+ 'function',
+ {'function' => $declaration_name,
+ 'module' => $modulename,
+ 'functiontype' => $return_type,
+ 'parameterlist' => \@parameterlist,
+ 'parameterdescs' => \%parameterdescs,
+ 'parametertypes' => \%parametertypes,
+ 'sectionlist' => \@sectionlist,
+ 'sections' => \%sections,
+ 'purpose' => $declaration_purpose
+ });
+ }
+}
+
+sub reset_state {
+ $function = "";
+ %parameterdescs = ();
+ %parametertypes = ();
+ @parameterlist = ();
+ %sections = ();
+ @sectionlist = ();
+ $sectcheck = "";
+ $struct_actual = "";
+ $prototype = "";
+
+ $state = STATE_NORMAL;
+ $inline_doc_state = STATE_INLINE_NA;
+}
+
+sub tracepoint_munge($) {
+ my $file = shift;
+ my $tracepointname = 0;
+ my $tracepointargs = 0;
+
+ if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
+ $tracepointname = $1;
+ }
+ if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
+ $tracepointname = $1;
+ }
+ if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
+ $tracepointname = $2;
+ }
+ $tracepointname =~ s/^\s+//; #strip leading whitespace
+ if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
+ $tracepointargs = $1;
+ }
+ if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
+ emit_warning("${file}:$.", "Unrecognized tracepoint format: \n".
+ "$prototype\n");
+ } else {
+ $prototype = "static inline void trace_$tracepointname($tracepointargs)";
+ $identifier = "trace_$identifier";
+ }
+}
+
+sub syscall_munge() {
+ my $void = 0;
+
+ $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
+## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
+ if ($prototype =~ m/SYSCALL_DEFINE0/) {
+ $void = 1;
+## $prototype = "long sys_$1(void)";
+ }
+
+ $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
+ if ($prototype =~ m/long (sys_.*?),/) {
+ $prototype =~ s/,/\(/;
+ } elsif ($void) {
+ $prototype =~ s/\)/\(void\)/;
+ }
+
+ # now delete all of the odd-number commas in $prototype
+ # so that arg types & arg names don't have a comma between them
+ my $count = 0;
+ my $len = length($prototype);
+ if ($void) {
+ $len = 0; # skip the for-loop
+ }
+ for (my $ix = 0; $ix < $len; $ix++) {
+ if (substr($prototype, $ix, 1) eq ',') {
+ $count++;
+ if ($count % 2 == 1) {
+ substr($prototype, $ix, 1) = ' ';
+ }
+ }
+ }
+}
+
+sub process_proto_function($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+ if ($x =~ m#\s*/\*\s+MACDOC\s*#io || ($x =~ /^#/ && $x !~ /^#\s*define/)) {
+ # do nothing
+ }
+ elsif ($x =~ /([^\{]*)/) {
+ $prototype .= $1;
+ }
+
+ if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
+ $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
+ $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+ $prototype =~ s@^\s+@@gos; # strip leading spaces
+
+ # Handle prototypes for function pointers like:
+ # int (*pcs_config)(struct foo)
+ $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
+
+ if ($prototype =~ /SYSCALL_DEFINE/) {
+ syscall_munge();
+ }
+ if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
+ $prototype =~ /DEFINE_SINGLE_EVENT/)
+ {
+ tracepoint_munge($file);
+ }
+ dump_function($prototype, $file);
+ reset_state();
+ }
+}
+
+sub process_proto_type($$) {
+ my $x = shift;
+ my $file = shift;
+
+ $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
+ $x =~ s@^\s+@@gos; # strip leading spaces
+ $x =~ s@\s+$@@gos; # strip trailing spaces
+ $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
+
+ if ($x =~ /^#/) {
+ # To distinguish preprocessor directive from regular declaration later.
+ $x .= ";";
+ }
+
+ while (1) {
+ if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
+ if( length $prototype ) {
+ $prototype .= " "
+ }
+ $prototype .= $1 . $2;
+ ($2 eq '{') && $brcount++;
+ ($2 eq '}') && $brcount--;
+ if (($2 eq ';') && ($brcount == 0)) {
+ dump_declaration($prototype, $file);
+ reset_state();
+ last;
+ }
+ $x = $3;
+ } else {
+ $prototype .= $x;
+ last;
+ }
+ }
+}
+
+
+sub map_filename($) {
+ my $file;
+ my ($orig_file) = @_;
+
+ if (defined($ENV{'SRCTREE'})) {
+ $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
+ } else {
+ $file = $orig_file;
+ }
+
+ if (defined($source_map{$file})) {
+ $file = $source_map{$file};
+ }
+
+ return $file;
+}
+
+sub process_export_file($) {
+ my ($orig_file) = @_;
+ my $file = map_filename($orig_file);
+
+ if (!open(IN,"<$file")) {
+ print STDERR "Error: Cannot open file $file\n";
+ ++$errors;
+ return;
+ }
+
+ while (<IN>) {
+ if (/$export_symbol/) {
+ next if (defined($nosymbol_table{$2}));
+ $function_table{$2} = 1;
+ }
+ if (/$export_symbol_ns/) {
+ next if (defined($nosymbol_table{$2}));
+ $function_table{$2} = 1;
+ }
+ }
+
+ close(IN);
+}
+
+#
+# Parsers for the various processing states.
+#
+# STATE_NORMAL: looking for the /** to begin everything.
+#
+sub process_normal() {
+ if (/$doc_start/o) {
+ $state = STATE_NAME; # next line is always the function name
+ $in_doc_sect = 0;
+ $declaration_start_line = $. + 1;
+ }
+}
+
+#
+# STATE_NAME: Looking for the "name - description" line
+#
+sub process_name($$) {
+ my $file = shift;
+ my $descr;
+
+ if (/$doc_block/o) {
+ $state = STATE_DOCBLOCK;
+ $contents = "";
+ $new_start_line = $.;
+
+ if ( $1 eq "" ) {
+ $section = $section_intro;
+ } else {
+ $section = $1;
+ }
+ } elsif (/$doc_decl/o) {
+ $identifier = $1;
+ my $is_kernel_comment = 0;
+ my $decl_start = qr{$doc_com};
+ # test for pointer declaration type, foo * bar() - desc
+ my $fn_type = qr{\w+\s*\*\s*};
+ my $parenthesis = qr{\(\w*\)};
+ my $decl_end = qr{[-:].*};
+ if (/^$decl_start([\w\s]+?)$parenthesis?\s*$decl_end?$/) {
+ $identifier = $1;
+ }
+ if ($identifier =~ m/^(struct|union|enum|typedef)\b\s*(\S*)/) {
+ $decl_type = $1;
+ $identifier = $2;
+ $is_kernel_comment = 1;
+ }
+ # Look for foo() or static void foo() - description; or misspelt
+ # identifier
+ elsif (/^$decl_start$fn_type?(\w+)\s*$parenthesis?\s*$decl_end?$/ ||
+ /^$decl_start$fn_type?(\w+.*)$parenthesis?\s*$decl_end$/) {
+ $identifier = $1;
+ $decl_type = 'function';
+ $identifier =~ s/^define\s+//;
+ $is_kernel_comment = 1;
+ }
+ $identifier =~ s/\s+$//;
+
+ $state = STATE_BODY;
+ # if there's no @param blocks need to set up default section
+ # here
+ $contents = "";
+ $section = $section_default;
+ $new_start_line = $. + 1;
+ if (/[-:](.*)/) {
+ # strip leading/trailing/multiple spaces
+ $descr= $1;
+ $descr =~ s/^\s*//;
+ $descr =~ s/\s*$//;
+ $descr =~ s/\s+/ /g;
+ $declaration_purpose = $descr;
+ $state = STATE_BODY_MAYBE;
+ } else {
+ $declaration_purpose = "";
+ }
+
+ if (!$is_kernel_comment) {
+ emit_warning("${file}:$.", "This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst\n$_");
+ $state = STATE_NORMAL;
+ }
+
+ if (($declaration_purpose eq "") && $Wshort_desc) {
+ emit_warning("${file}:$.", "missing initial short description on line:\n$_");
+ }
+
+ if ($identifier eq "" && $decl_type ne "enum") {
+ emit_warning("${file}:$.", "wrong kernel-doc identifier on line:\n$_");
+ $state = STATE_NORMAL;
+ }
+
+ if ($verbose) {
+ print STDERR "${file}:$.: info: Scanning doc for $decl_type $identifier\n";
+ }
+ } else {
+ emit_warning("${file}:$.", "Cannot understand $_ on line $. - I thought it was a doc line\n");
+ $state = STATE_NORMAL;
+ }
+}
+
+
+#
+# STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
+#
+sub process_body($$) {
+ my $file = shift;
+
+ if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
+ dump_section($file, $section, $contents);
+ $section = $section_default;
+ $new_start_line = $.;
+ $contents = "";
+ }
+
+ if (/$doc_sect/i) { # case insensitive for supported section names
+ $newsection = $1;
+ $newcontents = $2;
+
+ # map the supported section names to the canonical names
+ if ($newsection =~ m/^description$/i) {
+ $newsection = $section_default;
+ } elsif ($newsection =~ m/^context$/i) {
+ $newsection = $section_context;
+ } elsif ($newsection =~ m/^returns?$/i) {
+ $newsection = $section_return;
+ } elsif ($newsection =~ m/^\@return$/) {
+ # special: @return is a section, not a param description
+ $newsection = $section_return;
+ }
+
+ if (($contents ne "") && ($contents ne "\n")) {
+ if (!$in_doc_sect && $Wcontents_before_sections) {
+ emit_warning("${file}:$.", "contents before sections\n");
+ }
+ dump_section($file, $section, $contents);
+ $section = $section_default;
+ }
+
+ $in_doc_sect = 1;
+ $state = STATE_BODY;
+ $contents = $newcontents;
+ $new_start_line = $.;
+ while (substr($contents, 0, 1) eq " ") {
+ $contents = substr($contents, 1);
+ }
+ if ($contents ne "") {
+ $contents .= "\n";
+ }
+ $section = $newsection;
+ $leading_space = undef;
+ } elsif (/$doc_end/) {
+ if (($contents ne "") && ($contents ne "\n")) {
+ dump_section($file, $section, $contents);
+ $section = $section_default;
+ $contents = "";
+ }
+ # look for doc_com + <text> + doc_end:
+ if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
+ emit_warning("${file}:$.", "suspicious ending line: $_");
+ }
+
+ $prototype = "";
+ $state = STATE_PROTO;
+ $brcount = 0;
+ $new_start_line = $. + 1;
+ } elsif (/$doc_content/) {
+ if ($1 eq "") {
+ if ($section eq $section_context) {
+ dump_section($file, $section, $contents);
+ $section = $section_default;
+ $contents = "";
+ $new_start_line = $.;
+ $state = STATE_BODY;
+ } else {
+ if ($section ne $section_default) {
+ $state = STATE_BODY_WITH_BLANK_LINE;
+ } else {
+ $state = STATE_BODY;
+ }
+ $contents .= "\n";
+ }
+ } elsif ($state == STATE_BODY_MAYBE) {
+ # Continued declaration purpose
+ chomp($declaration_purpose);
+ $declaration_purpose .= " " . $1;
+ $declaration_purpose =~ s/\s+/ /g;
+ } else {
+ my $cont = $1;
+ if ($section =~ m/^@/ || $section eq $section_context) {
+ if (!defined $leading_space) {
+ if ($cont =~ m/^(\s+)/) {
+ $leading_space = $1;
+ } else {
+ $leading_space = "";
+ }
+ }
+ $cont =~ s/^$leading_space//;
+ }
+ $contents .= $cont . "\n";
+ }
+ } else {
+ # i dont know - bad line? ignore.
+ emit_warning("${file}:$.", "bad line: $_");
+ }
+}
+
+
+#
+# STATE_PROTO: reading a function/whatever prototype.
+#
+sub process_proto($$) {
+ my $file = shift;
+
+ if (/$doc_inline_oneline/) {
+ $section = $1;
+ $contents = $2;
+ if ($contents ne "") {
+ $contents .= "\n";
+ dump_section($file, $section, $contents);
+ $section = $section_default;
+ $contents = "";
+ }
+ } elsif (/$doc_inline_start/) {
+ $state = STATE_INLINE;
+ $inline_doc_state = STATE_INLINE_NAME;
+ } elsif ($decl_type eq 'function') {
+ process_proto_function($_, $file);
+ } else {
+ process_proto_type($_, $file);
+ }
+}
+
+#
+# STATE_DOCBLOCK: within a DOC: block.
+#
+sub process_docblock($$) {
+ my $file = shift;
+
+ if (/$doc_end/) {
+ dump_doc_section($file, $section, $contents);
+ $section = $section_default;
+ $contents = "";
+ $function = "";
+ %parameterdescs = ();
+ %parametertypes = ();
+ @parameterlist = ();
+ %sections = ();
+ @sectionlist = ();
+ $prototype = "";
+ $state = STATE_NORMAL;
+ } elsif (/$doc_content/) {
+ if ( $1 eq "" ) {
+ $contents .= $blankline;
+ } else {
+ $contents .= $1 . "\n";
+ }
+ }
+}
+
+#
+# STATE_INLINE: docbook comments within a prototype.
+#
+sub process_inline($$) {
+ my $file = shift;
+
+ # First line (state 1) needs to be a @parameter
+ if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
+ $section = $1;
+ $contents = $2;
+ $new_start_line = $.;
+ if ($contents ne "") {
+ while (substr($contents, 0, 1) eq " ") {
+ $contents = substr($contents, 1);
+ }
+ $contents .= "\n";
+ }
+ $inline_doc_state = STATE_INLINE_TEXT;
+ # Documentation block end */
+ } elsif (/$doc_inline_end/) {
+ if (($contents ne "") && ($contents ne "\n")) {
+ dump_section($file, $section, $contents);
+ $section = $section_default;
+ $contents = "";
+ }
+ $state = STATE_PROTO;
+ $inline_doc_state = STATE_INLINE_NA;
+ # Regular text
+ } elsif (/$doc_content/) {
+ if ($inline_doc_state == STATE_INLINE_TEXT) {
+ $contents .= $1 . "\n";
+ # nuke leading blank lines
+ if ($contents =~ /^\s*$/) {
+ $contents = "";
+ }
+ } elsif ($inline_doc_state == STATE_INLINE_NAME) {
+ $inline_doc_state = STATE_INLINE_ERROR;
+ emit_warning("${file}:$.", "Incorrect use of kernel-doc format: $_");
+ }
+ }
+}
+
+
+sub process_file($) {
+ my $file;
+ my $initial_section_counter = $section_counter;
+ my ($orig_file) = @_;
+
+ $file = map_filename($orig_file);
+
+ if (!open(IN_FILE,"<$file")) {
+ print STDERR "Error: Cannot open file $file\n";
+ ++$errors;
+ return;
+ }
+
+ $. = 1;
+
+ $section_counter = 0;
+ while (<IN_FILE>) {
+ while (s/\\\s*$//) {
+ $_ .= <IN_FILE>;
+ }
+ # Replace tabs by spaces
+ while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
+ # Hand this line to the appropriate state handler
+ if ($state == STATE_NORMAL) {
+ process_normal();
+ } elsif ($state == STATE_NAME) {
+ process_name($file, $_);
+ } elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
+ $state == STATE_BODY_WITH_BLANK_LINE) {
+ process_body($file, $_);
+ } elsif ($state == STATE_INLINE) { # scanning for inline parameters
+ process_inline($file, $_);
+ } elsif ($state == STATE_PROTO) {
+ process_proto($file, $_);
+ } elsif ($state == STATE_DOCBLOCK) {
+ process_docblock($file, $_);
+ }
+ }
+
+ # Make sure we got something interesting.
+ if ($initial_section_counter == $section_counter && $
+ output_mode ne "none") {
+ if ($output_selection == OUTPUT_INCLUDE) {
+ emit_warning("${file}:1", "'$_' not found\n")
+ for keys %function_table;
+ }
+ else {
+ emit_warning("${file}:1", "no structured comments found\n");
+ }
+ }
+ close IN_FILE;
+}
+
+
+if ($output_mode eq "rst") {
+ get_sphinx_version() if (!$sphinx_major);
+}
+
+$kernelversion = get_kernel_version();
+
+# generate a sequence of code that will splice in highlighting information
+# using the s// operator.
+for (my $k = 0; $k < @highlights; $k++) {
+ my $pattern = $highlights[$k][0];
+ my $result = $highlights[$k][1];
+# print STDERR "scanning pattern:$pattern, highlight:($result)\n";
+ $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
+}
+
+# Read the file that maps relative names to absolute names for
+# separate source and object directories and for shadow trees.
+if (open(SOURCE_MAP, "<.tmp_filelist.txt")) {
+ my ($relname, $absname);
+ while(<SOURCE_MAP>) {
+ chop();
+ ($relname, $absname) = (split())[0..1];
+ $relname =~ s:^/+::;
+ $source_map{$relname} = $absname;
+ }
+ close(SOURCE_MAP);
+}
+
+if ($output_selection == OUTPUT_EXPORTED ||
+ $output_selection == OUTPUT_INTERNAL) {
+
+ push(@export_file_list, @ARGV);
+
+ foreach (@export_file_list) {
+ chomp;
+ process_export_file($_);
+ }
+}
+
+foreach (@ARGV) {
+ chomp;
+ process_file($_);
+}
+if ($verbose && $errors) {
+ print STDERR "$errors errors\n";
+}
+if ($verbose && $warnings) {
+ print STDERR "$warnings warnings\n";
+}
+
+if ($Werror && $warnings) {
+ print STDERR "$warnings warnings as Errors\n";
+ exit($warnings);
+} else {
+ exit($output_mode eq "none" ? 0 : $errors)
+}
+
+__END__
+
+=head1 OPTIONS
+
+=head2 Output format selection (mutually exclusive):
+
+=over 8
+
+=item -man
+
+Output troff manual page format.
+
+=item -rst
+
+Output reStructuredText format. This is the default.
+
+=item -none
+
+Do not output documentation, only warnings.
+
+=back
+
+=head2 Output format modifiers
+
+=head3 reStructuredText only
+
+=over 8
+
+=item -sphinx-version VERSION
+
+Use the ReST C domain dialect compatible with a specific Sphinx Version.
+
+If not specified, kernel-doc will auto-detect using the sphinx-build version
+found on PATH.
+
+=back
+
+=head2 Output selection (mutually exclusive):
+
+=over 8
+
+=item -export
+
+Only output documentation for the symbols that have been exported using
+EXPORT_SYMBOL() and related macros in any input FILE or -export-file FILE.
+
+=item -internal
+
+Only output documentation for the symbols that have NOT been exported using
+EXPORT_SYMBOL() and related macros in any input FILE or -export-file FILE.
+
+=item -function NAME
+
+Only output documentation for the given function or DOC: section title.
+All other functions and DOC: sections are ignored.
+
+May be specified multiple times.
+
+=item -nosymbol NAME
+
+Exclude the specified symbol from the output documentation.
+
+May be specified multiple times.
+
+=back
+
+=head2 Output selection modifiers:
+
+=over 8
+
+=item -no-doc-sections
+
+Do not output DOC: sections.
+
+=item -export-file FILE
+
+Specify an additional FILE in which to look for EXPORT_SYMBOL information.
+
+To be used with -export or -internal.
+
+May be specified multiple times.
+
+=back
+
+=head3 reStructuredText only
+
+=over 8
+
+=item -enable-lineno
+
+Enable output of .. LINENO lines.
+
+=back
+
+=head2 Other parameters:
+
+=over 8
+
+=item -h, -help
+
+Print this help.
+
+=item -v
+
+Verbose output, more warnings and other information.
+
+=item -Werror
+
+Treat warnings as errors.
+
+=back
+
+=cut
--
2.41.0
