namespace: perlcritic warnings

Use local file handle not global.
Make loop and other variables local in scope.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Hui Zhu <teawater@gmail.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/scripts/namespace.pl b/scripts/namespace.pl
index c6e88c6..361d0f7 100755 (executable)
--- a/scripts/namespace.pl
+++ b/scripts/namespace.pl
@@ -175,12 +175,11 @@ sub do_nm
        }
        if (! -e "$source.c" && ! -e "$source.S") {
                # No obvious source, exclude the object if it is conglomerate
-               if (! open(OBJDUMPDATA, "$objdump $basename|")) {
-                       printf STDERR "$objdump $fullname failed $!\n";
-                       return;
-               }
+               open(my $objdumpdata, "$objdump $basename|")
+                   or die "$objdump $fullname failed $!\n";
+
                my $comment;
-               while (<OBJDUMPDATA>) {
+               while (<$objdumpdata>) {
                        chomp();
                        if (/^In archive/) {
                                # Archives are always conglomerate
@@ -190,18 +189,18 @@ sub do_nm
                        next if (! /^[ 0-9a-f]{5,} /);
                        $comment .= substr($_, 43);
                }
-               close(OBJDUMPDATA);
+               close($objdumpdata);
+
                if (!defined($comment) || $comment !~ /GCC\:.*GCC\:/m) {
                        printf STDERR "No source file found for $fullname\n";
                }
                return;
        }
-       if (! open(NMDATA, "$nm $basename|")) {
-               printf STDERR "$nm $fullname failed $!\n";
-               return;
-       }
+       open (my $nmdata, "$nm $basename|")
+           or die "$nm $fullname failed $!\n";
+
        my @nmdata;
-       while (<NMDATA>) {
+       while (<$nmdata>) {
                chop;
                ($type, $name) = (split(/ +/, $_, 3))[1..2];
                # Expected types
@@ -268,7 +267,8 @@ sub do_nm
                        }
                }
        }
-       close(NMDATA);
+       close($nmdata);
+
        if ($#nmdata < 0) {
                if (
                        $fullname ne "lib/brlock.o"
@@ -316,8 +316,7 @@ sub drop_def
 
 sub list_multiply_defined
 {
-       my ($name, $module);
-       foreach $name (keys(%def)) {
+       foreach my $name (keys(%def)) {
                if ($#{$def{$name}} > 0) {
                        # Special case for cond_syscall
                        if ($#{$def{$name}} == 1 && $name =~ /^sys_/ &&
@@ -333,8 +332,9 @@ sub list_multiply_defined
                                &drop_def("arch/x86/kernel/vsyscall-sysenter_32.o", $name);
                                next;
                        }
+
                        printf "$name is multiply defined in :-\n";
-                       foreach $module (@{$def{$name}}) {
+                       foreach my $module (@{$def{$name}}) {
                                printf "\t$module\n";
                        }
                }
@@ -343,12 +343,13 @@ sub list_multiply_defined
 
 sub resolve_external_references
 {
-       my ($object, $type, $name, $i, $j, $kstrtab, $ksymtab, $export);
+       my ($kstrtab, $ksymtab, $export);
+
        printf "\n";
-       foreach $object (keys(%nmdata)) {
+       foreach my $object (keys(%nmdata)) {
                my $nmdata = $nmdata{$object};
-               for ($i = 0; $i <= $#{$nmdata}; ++$i) {
-                       ($type, $name) = split(' ', $nmdata->[$i], 2);
+               for (my $i = 0; $i <= $#{$nmdata}; ++$i) {
+                       my ($type, $name) = split(' ', $nmdata->[$i], 2);
                        if ($type eq "U" || $type eq "w") {
                                if (exists($def{$name}) || exists($ksymtab{$name})) {
                                        # add the owning object to the nmdata
@@ -357,7 +358,7 @@ sub resolve_external_references
                                        $kstrtab = "R __kstrtab_$name";
                                        $ksymtab = "R __ksymtab_$name";
                                        $export = 0;
-                                       for ($j = 0; $j <= $#{$nmdata}; ++$j) {
+                                       for (my $j = 0; $j <= $#{$nmdata}; ++$j) {
                                                if ($nmdata->[$j] eq $kstrtab ||
                                                    $nmdata->[$j] eq $ksymtab) {
                                                        $export = 1;
@@ -424,11 +425,11 @@ sub resolve_external_references
 sub list_extra_externals
 {
        my %noref = ();
-       my ($name, @module, $module, $export);
-       foreach $name (keys(%def)) {
+
+       foreach my $name (keys(%def)) {
                if (! exists($ref{$name})) {
-                       @module = @{$def{$name}};
-                       foreach $module (@module) {
+                       my @module = @{$def{$name}};
+                       foreach my $module (@module) {
                                if (! exists($noref{$module})) {
                                        $noref{$module} = [];
                                }
@@ -438,16 +439,16 @@ sub list_extra_externals
        }
        if (%noref) {
                printf "\nExternally defined symbols with no external references\n";
-               foreach $module (sort(keys(%noref))) {
+               foreach my $module (sort(keys(%noref))) {
                        printf "  $module\n";
                        foreach (sort(@{$noref{$module}})) {
-                               if (exists($export{$_})) {
-                                       $export = " (export only)";
-                               }
-                               else {
-                                       $export = "";
-                               }
-                               printf "    $_$export\n";
+                           my $export;
+                           if (exists($export{$_})) {
+                               $export = " (export only)";
+                           } else {
+                               $export = "";
+                           }
+                           printf "    $_$export\n";
                        }
                }
        }