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76 lines
2.2 KiB
76 lines
2.2 KiB
#! /usr/bin/env perl |
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# SPDX-License-Identifier: GPL-2.0 |
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# |
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# checkversion finds uses of all macros in <linux/version.h> |
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# where the source files do not #include <linux/version.h>; or cases |
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# of including <linux/version.h> where it is not needed. |
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# Copyright (C) 2003, Randy Dunlap <[email protected]> |
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use strict; |
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$| = 1; |
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my $debugging; |
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foreach my $file (@ARGV) { |
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next if $file =~ "include/generated/uapi/linux/version\.h"; |
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next if $file =~ "usr/include/linux/version\.h"; |
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# Open this file. |
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open( my $f, '<', $file ) |
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or die "Can't open $file: $!\n"; |
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# Initialize variables. |
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my ($fInComment, $fInString, $fUseVersion); |
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my $iLinuxVersion = 0; |
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while (<$f>) { |
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# Strip comments. |
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$fInComment && (s+^.*?\*/+ +o ? ($fInComment = 0) : next); |
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m+/\*+o && (s+/\*.*?\*/+ +go, (s+/\*.*$+ +o && ($fInComment = 1))); |
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# Pick up definitions. |
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if ( m/^\s*#/o ) { |
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$iLinuxVersion = $. if m/^\s*#\s*include\s*"linux\/version\.h"/o; |
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} |
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# Strip strings. |
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$fInString && (s+^.*?"+ +o ? ($fInString = 0) : next); |
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m+"+o && (s+".*?"+ +go, (s+".*$+ +o && ($fInString = 1))); |
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# Pick up definitions. |
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if ( m/^\s*#/o ) { |
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$iLinuxVersion = $. if m/^\s*#\s*include\s*<linux\/version\.h>/o; |
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} |
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# Look for uses: LINUX_VERSION_CODE, KERNEL_VERSION, |
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# LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, LINUX_VERSION_SUBLEVEL |
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if (($_ =~ /LINUX_VERSION_CODE/) || ($_ =~ /\WKERNEL_VERSION/) || |
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($_ =~ /LINUX_VERSION_MAJOR/) || ($_ =~ /LINUX_VERSION_PATCHLEVEL/) || |
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($_ =~ /LINUX_VERSION_SUBLEVEL/)) { |
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$fUseVersion = 1; |
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last if $iLinuxVersion; |
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} |
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} |
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# Report used version IDs without include? |
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if ($fUseVersion && ! $iLinuxVersion) { |
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print "$file: $.: need linux/version.h\n"; |
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} |
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# Report superfluous includes. |
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if ($iLinuxVersion && ! $fUseVersion) { |
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print "$file: $iLinuxVersion linux/version.h not needed.\n"; |
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} |
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# debug: report OK results: |
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if ($debugging) { |
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if ($iLinuxVersion && $fUseVersion) { |
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print "$file: version use is OK ($iLinuxVersion)\n"; |
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} |
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if (! $iLinuxVersion && ! $fUseVersion) { |
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print "$file: version use is OK (none)\n"; |
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} |
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} |
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close($f); |
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}
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