Commit 33e3e991 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab Committed by Greg Kroah-Hartman
Browse files

scripts/get_abi.pl: add support for searching for ABI symbols



Change its syntax to allow switching between ReST output mode
and a new search mode, with allows to seek for ABI symbols
using regex.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d0ebaf51
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+103 −9
Original line number Diff line number Diff line
@@ -9,9 +9,11 @@ use Fcntl ':mode';
my $help;
my $man;
my $debug;
my $prefix="Documentation/ABI";

GetOptions(
	"debug|d+" => \$debug,
	"dir=s" => \$prefix,
	'help|?' => \$help,
	man => \$man
) or pod2usage(2);
@@ -19,9 +21,12 @@ GetOptions(
pod2usage(1) if $help;
pod2usage(-exitstatus => 0, -verbose => 2) if $man;

pod2usage(2) if (scalar @ARGV != 1);
pod2usage(2) if (scalar @ARGV < 1 || @ARGV > 2);

my ($prefix) = @ARGV;
my ($cmd, $arg) = @ARGV;

pod2usage(2) if ($cmd ne "search" && $cmd ne "rest");
pod2usage(2) if ($cmd eq "search" && !$arg);

require Data::Dumper if ($debug);

@@ -53,6 +58,7 @@ sub parse_abi {
	$data{$nametag}->{what} = "File $name";
	$data{$nametag}->{type} = "File";
	$data{$nametag}->{file} = $name;
	$data{$nametag}->{filepath} = $file;
	$data{$nametag}->{is_file} = 1;

	my $type = $file;
@@ -115,6 +121,7 @@ sub parse_abi {

					$data{$what}->{type} = $type;
					$data{$what}->{file} = $name;
					$data{$what}->{filepath} = $file;
					print STDERR "\twhat: $what\n" if ($debug > 1);
				}

@@ -183,7 +190,9 @@ sub parse_abi {
	close IN;
}

# Outputs the output on ReST format
#
# Outputs the book on ReST format
#
sub output_rest {
	foreach my $what (sort keys %data) {
		my $type = $data{$what}->{type};
@@ -262,6 +271,45 @@ sub output_rest {
	}
}

#
# Searches for ABI symbols
#
sub search_symbols {
	foreach my $what (sort keys %data) {
		next if (!($what =~ m/($arg)/));

		my $type = $data{$what}->{type};
		next if ($type eq "File");

		my $file = $data{$what}->{filepath};

		my $bar = $what;
		$bar =~ s/./-/g;

		print "\n$what\n$bar\n\n";

		my $kernelversion = $data{$what}->{kernelversion};
		my $contact = $data{$what}->{contact};
		my $users = $data{$what}->{users};
		my $date = $data{$what}->{date};
		my $desc = $data{$what}->{description};
		$kernelversion =~ s/^\s+//;
		$contact =~ s/^\s+//;
		$users =~ s/^\s+//;
		$users =~ s/\n//g;
		$date =~ s/^\s+//;
		$desc =~ s/^\s+//;

		printf "Kernel version:\t\t%s\n", $kernelversion if ($kernelversion);
		printf "Date:\t\t\t%s\n", $date if ($date);
		printf "Contact:\t\t%s\n", $contact if ($contact);
		printf "Users:\t\t\t%s\n", $users if ($users);
		print "Defined on file:\t$file\n\n";
		print "Description:\n\n$desc";
	}
}


#
# Parses all ABI files located at $prefix dir
#
@@ -270,9 +318,13 @@ find({wanted =>\&parse_abi, no_chdir => 1}, $prefix);
print STDERR Data::Dumper->Dump([\%data], [qw(*data)]) if ($debug);

#
# Outputs an ReST file with the ABI contents
# Handles the command
#
output_rest
if ($cmd eq "rest") {
	output_rest;
} else {
	search_symbols;
}


__END__
@@ -283,12 +335,27 @@ abi_book.pl - parse the Linux ABI files and produce a ReST book.

=head1 SYNOPSIS

B<abi_book.pl> [--debug] <ABI_DIR>]
B<abi_book.pl> [--debug] <COMAND> [<ARGUMENT>]

Where <COMMAND> can be:

=over 8

B<search> [SEARCH_REGEX] - search for [SEARCH_REGEX] inside ABI

B<rest>   - output the ABI in ReST markup language

=back

=head1 OPTIONS

=over 8

=item B<--dir>

Changes the location of the ABI search. By default, it uses
the Documentation/ABI directory.

=item B<--debug>

Put the script in verbose mode, useful for debugging. Can be called multiple
@@ -306,8 +373,35 @@ Prints the manual page and exits.

=head1 DESCRIPTION

Parse the Linux ABI files from ABI DIR (usually located at Documentation/ABI)
and produce a ReST book containing the Linux ABI.
Parse the Linux ABI files from ABI DIR (usually located at Documentation/ABI),
allowing to search for ABI symbols or to produce a ReST book containing
the Linux ABI documentation.

=head1 EXAMPLES

Search for all stable symbols with the word "usb":

=over 8

$ scripts/get_abi.pl search usb --dir Documentation/ABI/stable

=back

Search for all symbols that match the regex expression "usb.*cap":

=over 8

$ scripts/get_abi.pl search usb.*cap

=back

Output all obsoleted symbols in ReST format

=over 8

$ scripts/get_abi.pl rest --dir Documentation/ABI/obsolete

=back

=head1 BUGS

@@ -315,7 +409,7 @@ Report bugs to Mauro Carvalho Chehab <mchehab@s-opensource.com>

=head1 COPYRIGHT

Copyright (c) 2016 by Mauro Carvalho Chehab <mchehab@s-opensource.com>.
Copyright (c) 2016-2017 by Mauro Carvalho Chehab <mchehab@s-opensource.com>.

License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.