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leaking_addresses: Use File::Temp for /tmp files

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Instead of using a statically named path in /tmp, use File::Temp to create
(and remove) the temporary file used for parsing /proc/config.gz.

Reviewed-by: Tycho Andersen <tandersen@netflix.com>
Link: https://lore.kernel.org/r/20240222220053.1475824-2-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2024-02-22 14:00:49 -08:00
parent 616cfbf30b
commit 1b1bcbf454
1 changed files with 4 additions and 5 deletions
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9
scripts/leaking_addresses.pl
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@ -23,6 +23,7 @@ use strict;
use POSIX;
use File::Basename;
use File::Spec;
use File::Temp qw/tempfile/;
use Cwd 'abs_path';
use Term::ANSIColor qw(:constants);
use Getopt::Long qw(:config no_auto_abbrev);
@ -221,6 +222,7 @@ sub get_kernel_config_option
{
my ($option) = @_;
my $value = "";
my $tmp_fh;
my $tmp_file = "";
my @config_files;
@ -228,7 +230,8 @@ sub get_kernel_config_option
if ($kernel_config_file ne "") {
@config_files = ($kernel_config_file);
} elsif (-R "/proc/config.gz") {
my $tmp_file = "/tmp/tmpkconf";
($tmp_fh, $tmp_file) = tempfile("config.gz-XXXXXX",
UNLINK => 1);
if (system("gunzip < /proc/config.gz > $tmp_file")) {
dprint("system(gunzip < /proc/config.gz) failed\n");
@ -250,10 +253,6 @@ sub get_kernel_config_option
}
}
if ($tmp_file ne "") {
system("rm -f $tmp_file");
}
return $value;
}