1#! /usr/bin/perl 2# 3# checkversion find uses of LINUX_VERSION_CODE, KERNEL_VERSION, or 4# UTS_RELEASE 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 8$| = 1; 9 10my $debugging = 0; 11 12foreach $file (@ARGV) 13{ 14 # Open this file. 15 open(FILE, $file) || die "Can't open $file: $!\n"; 16 17 # Initialize variables. 18 my $fInComment = 0; 19 my $fInString = 0; 20 my $fUseVersion = 0; 21 my $iLinuxVersion = 0; 22 23 LINE: while ( <FILE> ) 24 { 25 # Strip comments. 26 $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next); 27 m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1))); 28 29 # Pick up definitions. 30 if ( m/^\s*#/o ) { 31 $iLinuxVersion = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o; 32 } 33 34 # Strip strings. 35 $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next); 36 m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1))); 37 38 # Pick up definitions. 39 if ( m/^\s*#/o ) { 40 $iLinuxVersion = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o; 41 } 42 43 # Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE 44 if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/) || 45 ($_ =~ /UTS_RELEASE/)) { 46 $fUseVersion = 1; 47 last LINE if $iLinuxVersion; 48 } 49 } 50 51 # Report used version IDs without include? 52 if ($fUseVersion && ! $iLinuxVersion) { 53 print "$file: $.: need linux/version.h\n"; 54 } 55 56 # Report superfluous includes. 57 if ($iLinuxVersion && ! $fUseVersion) { 58 print "$file: $iLinuxVersion linux/version.h not needed.\n"; 59 } 60 61 # debug: report OK results: 62 if ($debugging) { 63 if ($iLinuxVersion && $fUseVersion) { 64 print "$file: version use is OK ($iLinuxVersion)\n"; 65 } 66 if (! $iLinuxVersion && ! $fUseVersion) { 67 print "$file: version use is OK (none)\n"; 68 } 69 } 70 71 close(FILE); 72} 73