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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>
This commit is contained in:
Stephan Mueller 2017-07-30 14:31:18 +02:00 committed by Herbert Xu
parent 5060ffc97b
commit 5703c826b7
2 changed files with 6 additions and 2 deletions
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4
crypto/algif_aead.c
View File

@ -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;
}

4
crypto/algif_skcipher.c
View File

@ -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;
}