#! /usr/bin/perl # # checkversion find uses of LINUX_VERSION_CODE, KERNEL_VERSION, or # UTS_RELEASE without including <linux/version.h>, or cases of # including <linux/version.h> that don't need it. # Copyright (C) 2003, Randy Dunlap <rddunlap@osdl.org> $| = 1; my $debugging = 0; foreach $file (@ARGV) { # Open this file. open(FILE, $file) || die "Can't open $file: $!\n"; # Initialize variables. my $fInComment = 0; my $fInString = 0; my $fUseVersion = 0; my $iLinuxVersion = 0; LINE: while ( <FILE> ) { # Strip comments. $fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next); m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1))); # Pick up definitions. if ( m/^\s*#/o ) { $iLinuxVersion = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o; } # Strip strings. $fInString && (s+^.*?"+ +o ? ($fInString = 0) : next); m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1))); # Pick up definitions. if ( m/^\s*#/o ) { $iLinuxVersion = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o; } # Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, UTS_RELEASE if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/) || ($_ =~ /UTS_RELEASE/)) { $fUseVersion = 1; last LINE if $iLinuxVersion; } } # Report used version IDs without include? if ($fUseVersion && ! $iLinuxVersion) { print "$file: $.: need linux/version.h\n"; } # Report superfluous includes. if ($iLinuxVersion && ! $fUseVersion) { print "$file: $iLinuxVersion linux/version.h not needed.\n"; } # debug: report OK results: if ($debugging) { if ($iLinuxVersion && $fUseVersion) { print "$file: version use is OK ($iLinuxVersion)\n"; } if (! $iLinuxVersion && ! $fUseVersion) { print "$file: version use is OK (none)\n"; } } close(FILE); }