[Qemu-devel] [PATCH for 4.2 2/3] crypto: define cleanup functions for use with g_autoptr

["Daniel P. Berrangé" <berrange@redhat.com>]

Allow crypto structs to be used with g_autoptr, avoiding the need to
explicitly call XXX_free() functions when variables go out of scope on
the stack.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 include/crypto/block.h      | 2 ++
 include/crypto/cipher.h     | 2 ++
 include/crypto/hmac.h       | 2 ++
 include/crypto/ivgen.h      | 2 ++
 include/crypto/tlssession.h | 2 ++
 5 files changed, 10 insertions(+)

diff --git a/include/crypto/block.h b/include/crypto/block.h
index fe12899831..d49d2c2da9 100644
--- a/include/crypto/block.h
+++ b/include/crypto/block.h
@@ -268,4 +268,6 @@ uint64_t qcrypto_block_get_sector_size(QCryptoBlock *block);
  */
 void qcrypto_block_free(QCryptoBlock *block);
 
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoBlock, qcrypto_block_free)
+
 #endif /* QCRYPTO_BLOCK_H */
diff --git a/include/crypto/cipher.h b/include/crypto/cipher.h
index cac90b410c..5928e5ecc7 100644
--- a/include/crypto/cipher.h
+++ b/include/crypto/cipher.h
@@ -170,6 +170,8 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg,
  */
 void qcrypto_cipher_free(QCryptoCipher *cipher);
 
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoCipher, qcrypto_cipher_free)
+
 /**
  * qcrypto_cipher_encrypt:
  * @cipher: the cipher object
diff --git a/include/crypto/hmac.h b/include/crypto/hmac.h
index aa3c97a2ff..ad4d778416 100644
--- a/include/crypto/hmac.h
+++ b/include/crypto/hmac.h
@@ -65,6 +65,8 @@ QCryptoHmac *qcrypto_hmac_new(QCryptoHashAlgorithm alg,
  */
 void qcrypto_hmac_free(QCryptoHmac *hmac);
 
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoHmac, qcrypto_hmac_free)
+
 /**
  * qcrypto_hmac_bytesv:
  * @hmac: the hmac object
diff --git a/include/crypto/ivgen.h b/include/crypto/ivgen.h
index 9b4a62f7bb..e41521519c 100644
--- a/include/crypto/ivgen.h
+++ b/include/crypto/ivgen.h
@@ -203,4 +203,6 @@ QCryptoHashAlgorithm qcrypto_ivgen_get_hash(QCryptoIVGen *ivgen);
  */
 void qcrypto_ivgen_free(QCryptoIVGen *ivgen);
 
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoIVGen, qcrypto_ivgen_free)
+
 #endif /* QCRYPTO_IVGEN_H */
diff --git a/include/crypto/tlssession.h b/include/crypto/tlssession.h
index 816300cdcc..e01e1a9dc2 100644
--- a/include/crypto/tlssession.h
+++ b/include/crypto/tlssession.h
@@ -160,6 +160,8 @@ QCryptoTLSSession *qcrypto_tls_session_new(QCryptoTLSCreds *creds,
  */
 void qcrypto_tls_session_free(QCryptoTLSSession *sess);
 
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoTLSSession, qcrypto_tls_session_free)
+
 /**
  * qcrypto_tls_session_check_credentials:
  * @sess: the TLS session object
-- 
2.21.0