diff options
Diffstat (limited to 'block/crypto.c')
| -rw-r--r-- | block/crypto.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/block/crypto.c b/block/crypto.c index c8ba468..70b2f07 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -778,6 +778,37 @@ block_crypto_get_specific_info_luks(BlockDriverState *bs, Error **errp) } static int +block_crypto_amend_prepare(BlockDriverState *bs, Error **errp) +{ + BlockCrypto *crypto = bs->opaque; + int ret; + + /* apply for exclusive read/write permissions to the underlying file */ + crypto->updating_keys = true; + ret = bdrv_child_refresh_perms(bs, bs->file, errp); + if (ret < 0) { + /* Well, in this case we will not be updating any keys */ + crypto->updating_keys = false; + } + return ret; +} + +static void +block_crypto_amend_cleanup(BlockDriverState *bs) +{ + BlockCrypto *crypto = bs->opaque; + Error *errp = NULL; + + /* release exclusive read/write permissions to the underlying file */ + crypto->updating_keys = false; + bdrv_child_refresh_perms(bs, bs->file, &errp); + + if (errp) { + error_report_err(errp); + } +} + +static int block_crypto_amend_options_generic_luks(BlockDriverState *bs, QCryptoBlockAmendOptions *amend_options, bool force, @@ -931,6 +962,8 @@ static BlockDriver bdrv_crypto_luks = { .bdrv_get_specific_info = block_crypto_get_specific_info_luks, .bdrv_amend_options = block_crypto_amend_options_luks, .bdrv_co_amend = block_crypto_co_amend_luks, + .bdrv_amend_pre_run = block_crypto_amend_prepare, + .bdrv_amend_clean = block_crypto_amend_cleanup, .is_format = true, |