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shell script to setup dmverity device

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Trammell Hudson 2016-08-05 23:28:20 -04:00
parent e5e16bd47f
commit 2438460503
Failed to extract signature
1 changed files with 18 additions and 8 deletions
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26
verity-sign
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@ -76,17 +76,27 @@ my $hash_algorithm = $params{'Hash algorithm'}
die "Missing parameter: ", join(', ', @missing), "\n" die "Missing parameter: ", join(', ', @missing), "\n"
if @missing; if @missing;
# Compute the derived parameters
my $data_size = $data_blocks * $data_block_size; my $data_size = $data_blocks * $data_block_size;
my $data_size_512b = $data_size / 512; my $data_size_512b = $data_size / 512;
my $first_hash_block = $data_blocks + 1; my $first_hash_block = $data_blocks + 1;
print <<""; # The table must be on a single line
0 $data_size_512b verity $hash_type my $table = sprintf "0 %d verity %d %s %s %d %d %d %d %s %s %s",
$dev $dev $data_size_512b,
$data_block_size $hash_block_size $hash_type,
$data_blocks $first_hash_block $dev,
$hash_algorithm $dev,
$root_hash $data_block_size,
$salt $hash_block_size,
$data_blocks,
$first_hash_block,
$hash_algorithm,
$root_hash,
$salt,
;
print "dmsetup create --readonly boot --table '$table'\n";
print "dmsetup mknodes boot\n";
__END__ __END__