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