cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

checkversion.pl (2211B)

      1#! /usr/bin/env perl
      2# SPDX-License-Identifier: GPL-2.0
      3#
      4# checkversion finds uses of all macros in <linux/version.h>
      5# where the source files do not #include <linux/version.h>; or cases
      6# of including <linux/version.h> where it is not needed.
      7# Copyright (C) 2003, Randy Dunlap <rdunlap@infradead.org>
      8
      9use strict;
     10
     11$| = 1;
     12
     13my $debugging;
     14
     15foreach my $file (@ARGV) {
     16    next if $file =~ "include/generated/uapi/linux/version\.h";
     17    next if $file =~ "usr/include/linux/version\.h";
     18    # Open this file.
     19    open( my $f, '<', $file )
     20      or die "Can't open $file: $!\n";
     21
     22    # Initialize variables.
     23    my ($fInComment, $fInString, $fUseVersion);
     24    my $iLinuxVersion = 0;
     25
     26    while (<$f>) {
     27	# Strip comments.
     28	$fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next);
     29	m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1)));
     30
     31	# Pick up definitions.
     32	if ( m/^\s*#/o ) {
     33	    $iLinuxVersion      = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o;
     34	}
     35
     36	# Strip strings.
     37	$fInString && (s+^.*?"+ +o ? ($fInString = 0) : next);
     38	m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1)));
     39
     40	# Pick up definitions.
     41	if ( m/^\s*#/o ) {
     42	    $iLinuxVersion      = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o;
     43	}
     44
     45	# Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION,
     46	# LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, LINUX_VERSION_SUBLEVEL
     47	if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/) ||
     48	    ($_ =~ /LINUX_VERSION_MAJOR/) || ($_ =~ /LINUX_VERSION_PATCHLEVEL/) ||
     49	    ($_ =~ /LINUX_VERSION_SUBLEVEL/)) {
     50	    $fUseVersion = 1;
     51            last if $iLinuxVersion;
     52        }
     53    }
     54
     55    # Report used version IDs without include?
     56    if ($fUseVersion && ! $iLinuxVersion) {
     57	print "$file: $.: need linux/version.h\n";
     58    }
     59
     60    # Report superfluous includes.
     61    if ($iLinuxVersion && ! $fUseVersion) {
     62	print "$file: $iLinuxVersion linux/version.h not needed.\n";
     63    }
     64
     65    # debug: report OK results:
     66    if ($debugging) {
     67        if ($iLinuxVersion && $fUseVersion) {
     68	    print "$file: version use is OK ($iLinuxVersion)\n";
     69        }
     70        if (! $iLinuxVersion && ! $fUseVersion) {
     71	    print "$file: version use is OK (none)\n";
     72        }
     73    }
     74
     75    close($f);
     76}