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-rwxr-xr-xscripts/leaking_addresses.pl66
1 files changed, 65 insertions, 1 deletions
diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
index 398e534f0e16..b3ffbf8022ce 100755
--- a/scripts/leaking_addresses.pl
+++ b/scripts/leaking_addresses.pl
@@ -41,10 +41,10 @@ my $debug = 0;
my $raw = 0;
my $output_raw = ""; # Write raw results to file.
my $input_raw = ""; # Read raw results from file instead of scanning.
-
my $suppress_dmesg = 0; # Don't show dmesg in output.
my $squash_by_path = 0; # Summary report grouped by absolute path.
my $squash_by_filename = 0; # Summary report grouped by filename.
+my $kernel_config_file = ""; # Kernel configuration file.
# Do not parse these files (absolute path).
my @skip_parse_files_abs = ('/proc/kmsg',
@@ -99,6 +99,7 @@ Options:
--suppress-dmesg Do not show dmesg results.
--squash-by-path Show one result per unique path.
--squash-by-filename Show one result per unique filename.
+ --kernel-config-file=<file> Kernel configuration file (e.g /boot/config)
-d, --debug Display debugging output.
-h, --help, --version Display this help and exit.
@@ -118,6 +119,7 @@ GetOptions(
'squash-by-path' => \$squash_by_path,
'squash-by-filename' => \$squash_by_filename,
'raw' => \$raw,
+ 'kernel-config-file=s' => \$kernel_config_file,
) or help(1);
help(0) if ($help);
@@ -187,6 +189,68 @@ sub is_ppc64
return 0;
}
+# Gets config option value from kernel config file.
+# Returns "" on error or if config option not found.
+sub get_kernel_config_option
+{
+ my ($option) = @_;
+ my $value = "";
+ my $tmp_file = "";
+ my @config_files;
+
+ # Allow --kernel-config-file to override.
+ if ($kernel_config_file ne "") {
+ @config_files = ($kernel_config_file);
+ } elsif (-R "/proc/config.gz") {
+ my $tmp_file = "/tmp/tmpkconf";
+
+ if (system("gunzip < /proc/config.gz > $tmp_file")) {
+ dprint "$0: system(gunzip < /proc/config.gz) failed\n";
+ return "";
+ } else {
+ @config_files = ($tmp_file);
+ }
+ } else {
+ my $file = '/boot/config-' . `uname -r`;
+ chomp $file;
+ @config_files = ($file, '/boot/config');
+ }
+
+ foreach my $file (@config_files) {
+ dprint("parsing config file: %s\n", $file);
+ $value = option_from_file($option, $file);
+ if ($value ne "") {
+ last;
+ }
+ }
+
+ if ($tmp_file ne "") {
+ system("rm -f $tmp_file");
+ }
+
+ return $value;
+}
+
+# Parses $file and returns kernel configuration option value.
+sub option_from_file
+{
+ my ($option, $file) = @_;
+ my $str = "";
+ my $val = "";
+
+ open(my $fh, "<", $file) or return "";
+ while (my $line = <$fh> ) {
+ if ($line =~ /^$option/) {
+ ($str, $val) = split /=/, $line;
+ chomp $val;
+ last;
+ }
+ }
+
+ close $fh;
+ return $val;
+}
+
sub is_false_positive
{
my ($match) = @_;