crypto: algif - return error code when no data was processed

If no data has been processed during recvmsg, return the error code.
This covers all errors received during non-AIO operations.

If any error occurs during a synchronous operation in addition to
-EIOCBQUEUED or -EBADMSG (like -ENOMEM), it should be relayed to the
caller.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index 9755aac..2de056c 100644 (file)
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c
@@ -791,9 +791,11 @@ static int aead_recvmsg(struct socket *sock, struct msghdr *msg,
                 * only handle one AIO request. If the caller wants to have
                 * multiple AIO requests in parallel, he must make multiple
                 * separate AIO calls.
+                *
+                * Also return the error if no data has been processed so far.
                 */
                if (err <= 0) {
-                       if (err == -EIOCBQUEUED || err == -EBADMSG)
+                       if (err == -EIOCBQUEUED || err == -EBADMSG || !ret)
                                ret = err;
                        goto out;
                }

diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 968d094..ce3b5fb 100644 (file)
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -714,9 +714,11 @@ static int skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
                 * only handle one AIO request. If the caller wants to have
                 * multiple AIO requests in parallel, he must make multiple
                 * separate AIO calls.
+                *
+                * Also return the error if no data has been processed so far.
                 */
                if (err <= 0) {
-                       if (err == -EIOCBQUEUED)
+                       if (err == -EIOCBQUEUED || !ret)
                                ret = err;
                        goto out;
                }