From 50a483405c420f5f35b8dbb71425459835ae44eb Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <masahiroy@kernel.org>
Date: Mon, 6 Dec 2021 11:35:06 +0900
Subject: kbuild: move headers_check.pl to usr/include/

This script is only used by usr/include/Makefile. Make it local to
the directory.

Update the comment in include/uapi/linux/soundcard.h because
'make headers_check' is no longer functional.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---
 scripts/headers_check.pl | 171 -----------------------------------------------
 1 file changed, 171 deletions(-)
 delete mode 100755 scripts/headers_check.pl

(limited to 'scripts/headers_check.pl')

diff --git a/scripts/headers_check.pl b/scripts/headers_check.pl
deleted file mode 100755
index b6aec5e4365f..000000000000
--- a/scripts/headers_check.pl
+++ /dev/null
@@ -1,171 +0,0 @@
-#!/usr/bin/env perl
-# SPDX-License-Identifier: GPL-2.0
-#
-# headers_check.pl execute a number of trivial consistency checks
-#
-# Usage: headers_check.pl dir arch [files...]
-# dir:   dir to look for included files
-# arch:  architecture
-# files: list of files to check
-#
-# The script reads the supplied files line by line and:
-#
-# 1) for each include statement it checks if the
-#    included file actually exists.
-#    Only include files located in asm* and linux* are checked.
-#    The rest are assumed to be system include files.
-#
-# 2) It is checked that prototypes does not use "extern"
-#
-# 3) Check for leaked CONFIG_ symbols
-
-use warnings;
-use strict;
-use File::Basename;
-
-my ($dir, $arch, @files) = @ARGV;
-
-my $ret = 0;
-my $line;
-my $lineno = 0;
-my $filename;
-
-foreach my $file (@files) {
-	$filename = $file;
-
-	open(my $fh, '<', $filename)
-		or die "$filename: $!\n";
-	$lineno = 0;
-	while ($line = <$fh>) {
-		$lineno++;
-		&check_include();
-		&check_asm_types();
-		&check_sizetypes();
-		&check_declarations();
-		# Dropped for now. Too much noise &check_config();
-	}
-	close $fh;
-}
-exit $ret;
-
-sub check_include
-{
-	if ($line =~ m/^\s*#\s*include\s+<((asm|linux).*)>/) {
-		my $inc = $1;
-		my $found;
-		$found = stat($dir . "/" . $inc);
-		if (!$found) {
-			$inc =~ s#asm/#asm-$arch/#;
-			$found = stat($dir . "/" . $inc);
-		}
-		if (!$found) {
-			printf STDERR "$filename:$lineno: included file '$inc' is not exported\n";
-			$ret = 1;
-		}
-	}
-}
-
-sub check_declarations
-{
-	# soundcard.h is what it is
-	if ($line =~ m/^void seqbuf_dump\(void\);/) {
-		return;
-	}
-	# drm headers are being C++ friendly
-	if ($line =~ m/^extern "C"/) {
-		return;
-	}
-	if ($line =~ m/^(\s*extern|unsigned|char|short|int|long|void)\b/) {
-		printf STDERR "$filename:$lineno: " .
-			      "userspace cannot reference function or " .
-			      "variable defined in the kernel\n";
-	}
-}
-
-sub check_config
-{
-	if ($line =~ m/[^a-zA-Z0-9_]+CONFIG_([a-zA-Z0-9_]+)[^a-zA-Z0-9_]/) {
-		printf STDERR "$filename:$lineno: leaks CONFIG_$1 to userspace where it is not valid\n";
-	}
-}
-
-my $linux_asm_types;
-sub check_asm_types
-{
-	if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) {
-		return;
-	}
-	if ($lineno == 1) {
-		$linux_asm_types = 0;
-	} elsif ($linux_asm_types >= 1) {
-		return;
-	}
-	if ($line =~ m/^\s*#\s*include\s+<asm\/types.h>/) {
-		$linux_asm_types = 1;
-		printf STDERR "$filename:$lineno: " .
-		"include of <linux/types.h> is preferred over <asm/types.h>\n"
-		# Warn until headers are all fixed
-		#$ret = 1;
-	}
-}
-
-my $linux_types;
-my %import_stack = ();
-sub check_include_typesh
-{
-	my $path = $_[0];
-	my $import_path;
-
-	my $fh;
-	my @file_paths = ($path, $dir . "/" .  $path, dirname($filename) . "/" . $path);
-	for my $possible ( @file_paths ) {
-	    if (not $import_stack{$possible} and open($fh, '<', $possible)) {
-		$import_path = $possible;
-		$import_stack{$import_path} = 1;
-		last;
-	    }
-	}
-	if (eof $fh) {
-	    return;
-	}
-
-	my $line;
-	while ($line = <$fh>) {
-		if ($line =~ m/^\s*#\s*include\s+<linux\/types.h>/) {
-			$linux_types = 1;
-			last;
-		}
-		if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) {
-			check_include_typesh($included);
-		}
-	}
-	close $fh;
-	delete $import_stack{$import_path};
-}
-
-sub check_sizetypes
-{
-	if ($filename =~ /types.h|int-l64.h|int-ll64.h/o) {
-		return;
-	}
-	if ($lineno == 1) {
-		$linux_types = 0;
-	} elsif ($linux_types >= 1) {
-		return;
-	}
-	if ($line =~ m/^\s*#\s*include\s+<linux\/types.h>/) {
-		$linux_types = 1;
-		return;
-	}
-	if (my $included = ($line =~ /^\s*#\s*include\s+[<"](\S+)[>"]/)[0]) {
-		check_include_typesh($included);
-	}
-	if ($line =~ m/__[us](8|16|32|64)\b/) {
-		printf STDERR "$filename:$lineno: " .
-		              "found __[us]{8,16,32,64} type " .
-		              "without #include <linux/types.h>\n";
-		$linux_types = 2;
-		# Warn until headers are all fixed
-		#$ret = 1;
-	}
-}
-- 
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