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authorMasahiro Yamada <masahiroy@kernel.org>2021-12-06 11:35:06 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2022-01-08 17:41:00 +0900
commit50a483405c420f5f35b8dbb71425459835ae44eb (patch)
tree0e85f0174470018a6343aaf95d9877681adf6511 /scripts/headers_check.pl
parente06a61a89ccd3edda046c78f9d08aa045b8c4d32 (diff)
downloadlinux-50a483405c420f5f35b8dbb71425459835ae44eb.tar.bz2
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>
Diffstat (limited to 'scripts/headers_check.pl')
-rwxr-xr-xscripts/headers_check.pl171
1 files changed, 0 insertions, 171 deletions
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;
- }
-}