aboutsummaryrefslogtreecommitdiffstats
path: root/scripts/checkversion.pl
diff options
context:
space:
mode:
Diffstat (limited to 'scripts/checkversion.pl')
-rwxr-xr-xscripts/checkversion.pl72
1 files changed, 72 insertions, 0 deletions
diff --git a/scripts/checkversion.pl b/scripts/checkversion.pl
new file mode 100755
index 000000000000..df10db662eb1
--- /dev/null
+++ b/scripts/checkversion.pl
@@ -0,0 +1,72 @@
+#! /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);
+}

Privacy Policy