[PATCH v2 06/10] crypto: AF_ALG: make setkey optional

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The current AF_ALG implementation requires that a userspace interface
implementation must provide a callback for setkey. Such a call is not
appliable to random number generators.

To prepare AF_ALG for the addition of a random number generator user
space interface, this function callback invocation is made optional.

Signed-off-by: Stephan Mueller <smueller@xxxxxxxxxx>
---
 crypto/af_alg.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 635140b..47a199c 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -177,6 +177,9 @@ static int alg_setkey(struct sock *sk, char __user *ukey,
 	u8 *key;
 	int err;
 
+	if (!type->setkey)
+		return -EOPNOTSUPP;
+
 	key = sock_kmalloc(sk, keylen, GFP_KERNEL);
 	if (!key)
 		return -ENOMEM;
-- 
2.1.0


--
To unsubscribe from this list: send the line "unsubscribe linux-api" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux