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qcrypto/core: add generic infrastructure for crypto options amendment

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This will be used first to implement luks keyslot management.

block_crypto_amend_opts_init will be used to convert
qemu-img cmdline to QCryptoBlockAmendOptions

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200608094030.670121-2-mlevitsk@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Maxim Levitsky 2020-06-25 14:55:36 +02:00 • committed by Max Reitz
parent d2a839ede8
commit 43cbd06df2
6 changed files with 95 additions and 0 deletions
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29
crypto/block.c
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@ -150,6 +150,35 @@ qcrypto_block_calculate_payload_offset(QCryptoBlockCreateOptions *create_opts,
return crypto != NULL;
}
int qcrypto_block_amend_options(QCryptoBlock *block,
QCryptoBlockReadFunc readfunc,
QCryptoBlockWriteFunc writefunc,
void *opaque,
QCryptoBlockAmendOptions *options,
bool force,
Error **errp)
{
if (options->format != block->format) {
error_setg(errp,
"Cannot amend encryption format");
return -1;
}
if (!block->driver->amend) {
error_setg(errp,
"Crypto format %s doesn't support format options amendment",
QCryptoBlockFormat_str(block->format));
return -1;
}
return block->driver->amend(block,
readfunc,
writefunc,
opaque,
options,
force,
errp);
}
QCryptoBlockInfo *qcrypto_block_get_info(QCryptoBlock *block,
Error **errp)