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crypto: Make block callbacks return 0 on success

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They currently return the value of their headerlen/buflen parameter on
success. Returning 0 instead makes it clear that short reads/writes are
not possible.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220609152744.3891847-5-afaria@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This commit is contained in:
Alberto Faria 2022-06-09 16:27:38 +01:00 • committed by Hanna Reitz
parent 353a5d84b2
commit 757dda54b4
6 changed files with 79 additions and 79 deletions
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32
include/crypto/block.h
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@ -29,24 +29,24 @@ typedef struct QCryptoBlock QCryptoBlock;
/* See also QCryptoBlockFormat, QCryptoBlockCreateOptions
* and QCryptoBlockOpenOptions in qapi/crypto.json */
typedef ssize_t (*QCryptoBlockReadFunc)(QCryptoBlock *block,
size_t offset,
uint8_t *buf,
size_t buflen,
void *opaque,
Error **errp);
typedef int (*QCryptoBlockReadFunc)(QCryptoBlock *block,
size_t offset,
uint8_t *buf,
size_t buflen,
void *opaque,
Error **errp);
typedef ssize_t (*QCryptoBlockInitFunc)(QCryptoBlock *block,
size_t headerlen,
void *opaque,
Error **errp);
typedef int (*QCryptoBlockInitFunc)(QCryptoBlock *block,
size_t headerlen,
void *opaque,
Error **errp);
typedef ssize_t (*QCryptoBlockWriteFunc)(QCryptoBlock *block,
size_t offset,
const uint8_t *buf,
size_t buflen,
void *opaque,
Error **errp);
typedef int (*QCryptoBlockWriteFunc)(QCryptoBlock *block,
size_t offset,
const uint8_t *buf,
size_t buflen,
void *opaque,
Error **errp);
/**
* qcrypto_block_has_format: