From 40c85028228d07c878cb58fc31222fb4d163a89f Mon Sep 17 00:00:00 2001 From: Daniel P. Berrange Date: Fri, 22 Jul 2016 13:53:34 +0100 Subject: crypto: add support for querying parameters for block encryption When creating new block encryption volumes, we accept a list of parameters to control the formatting process. It is useful to be able to query what those parameters were for existing block devices. Add a qcrypto_block_get_info() method which returns a QCryptoBlockInfo instance to report this data. Signed-off-by: Daniel P. Berrange Message-id: 1469192015-16487-2-git-send-email-berrange@redhat.com Reviewed-by: Eric Blake Signed-off-by: Max Reitz --- crypto/block.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'crypto/block.c') diff --git a/crypto/block.c b/crypto/block.c index da60eba85f..be823eebeb 100644 --- a/crypto/block.c +++ b/crypto/block.c @@ -105,6 +105,23 @@ QCryptoBlock *qcrypto_block_create(QCryptoBlockCreateOptions *options, } +QCryptoBlockInfo *qcrypto_block_get_info(QCryptoBlock *block, + Error **errp) +{ + QCryptoBlockInfo *info = g_new0(QCryptoBlockInfo, 1); + + info->format = block->format; + + if (block->driver->get_info && + block->driver->get_info(block, info, errp) < 0) { + g_free(info); + return NULL; + } + + return info; +} + + int qcrypto_block_decrypt(QCryptoBlock *block, uint64_t startsector, uint8_t *buf, -- cgit v1.2.3-55-g7522