my $unifdef = "scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__";
foreach my $file (@files) {
- local *INFILE;
- local *OUTFILE;
my $tmpfile = "$installdir/$file.tmp";
- open(INFILE, "<$readdir/$file")
- or die "$readdir/$file: $!\n";
- open(OUTFILE, ">$tmpfile") or die "$tmpfile: $!\n";
- while (my $line = <INFILE>) {
+
+ open(my $in, '<', "$readdir/$file")
+ or die "$readdir/$file: $!\n";
+ open(my $out, '>', $tmpfile)
+ or die "$tmpfile: $!\n";
+ while (my $line = <$in>) {
$line =~ s/([\s(])__user\s/$1/g;
$line =~ s/([\s(])__force\s/$1/g;
$line =~ s/([\s(])__iomem\s/$1/g;
$line =~ s/(^|\s)(inline)\b/$1__$2__/g;
$line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;
$line =~ s/(^|\s|[(])(volatile)\b(\s|[(]|$)/$1__$2__$3/g;
- printf OUTFILE "%s", $line;
+ printf {$out} "%s", $line;
}
- close OUTFILE;
- close INFILE;
+ close $out;
+ close $in;
+
system $unifdef . " $tmpfile > $installdir/$file";
+ # unifdef will exit 0 on success, and will exit 1 when the
+ # file was processed successfully but no changes were made,
+ # so abort only when it's higher than that.
+ my $e = $? >> 8;
+ if ($e > 1) {
+ die "$tmpfile: $!\n";
+ }
unlink $tmpfile;
}
exit 0;