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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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22
include/crypto/block.h
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@ -144,6 +144,28 @@ QCryptoBlock *qcrypto_block_create(QCryptoBlockCreateOptions *options,
void *opaque,
Error **errp);
/**
* qcrypto_block_amend_options:
* @block: the block encryption object
*
* @readfunc: callback for reading data from the volume header
* @writefunc: callback for writing data to the volume header
* @opaque: data to pass to @readfunc and @writefunc
* @options: the new/amended encryption options
* @force: hint for the driver to allow unsafe operation
* @errp: error pointer
*
* Changes the crypto options of the encryption format
*
*/
int qcrypto_block_amend_options(QCryptoBlock *block,
QCryptoBlockReadFunc readfunc,
QCryptoBlockWriteFunc writefunc,
void *opaque,
QCryptoBlockAmendOptions *options,
bool force,
Error **errp);
/**
* qcrypto_block_calculate_payload_offset: