diff options
| -rwxr-xr-x | scripts/extract-sys-certs.pl | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/scripts/extract-sys-certs.pl b/scripts/extract-sys-certs.pl index d476e7d1fd88..8227ca10a494 100755 --- a/scripts/extract-sys-certs.pl +++ b/scripts/extract-sys-certs.pl @@ -91,13 +91,15 @@ print "Have $nr_symbols symbols\n"; die "Can't find system certificate list" unless (exists($symbols{"__cert_list_start"}) && - exists($symbols{"__cert_list_end"})); + exists($symbols{"system_certificate_list_size"})); my $start = Math::BigInt->new($symbols{"__cert_list_start"}); -my $end = Math::BigInt->new($symbols{"__cert_list_end"}); -my $size = $end - $start; +my $end; +my $size; +my $size_sym = Math::BigInt->new($symbols{"system_certificate_list_size"}); -printf "Have %u bytes of certs at VMA 0x%x\n", $size, $start; +open FD, "<$vmlinux" || die $vmlinux; +binmode(FD); my $s = undef; foreach my $sec (@sections) { @@ -110,11 +112,24 @@ foreach my $sec (@sections) { next unless ($start >= $s_vma); next if ($start >= $s_vend); - die "Cert object partially overflows section $s_name\n" - if ($end > $s_vend); + die "Certificate list size was not found on the same section\n" + if ($size_sym < $s_vma || $size_sym > $s_vend); die "Cert object in multiple sections: ", $s_name, " and ", $s->{name}, "\n" if ($s); + + my $size_off = $size_sym -$s_vma + $s_foff; + my $packed; + die $vmlinux if (!defined(sysseek(FD, $size_off, SEEK_SET))); + sysread(FD, $packed, 8); + $size = unpack 'L!', $packed; + $end = $start + $size; + + printf "Have %u bytes of certs at VMA 0x%x\n", $size, $start; + + die "Cert object partially overflows section $s_name\n" + if ($end > $s_vend); + $s = $sec; } @@ -127,8 +142,6 @@ my $foff = $start - $s->{vma} + $s->{foff}; printf "Certificate list at file offset 0x%x\n", $foff; -open FD, "<$vmlinux" || die $vmlinux; -binmode(FD); die $vmlinux if (!defined(sysseek(FD, $foff, SEEK_SET))); my $buf = ""; my $len = sysread(FD, $buf, $size); |