Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux-2.6-block.git] / crypto / algif_skcipher.c

diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index c86207f267e215e941abbdc2b27fb277ecac57f0..f50907430c929fb00130f1ec6445fa107cec3ce2 100644 (file)
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -72,6 +72,12 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
        int err = 0;
        size_t len = 0;
 
+       if (!ctx->used) {
+               err = af_alg_wait_for_data(sk, flags);
+               if (err)
+                       return err;
+       }
+
        /* Allocate cipher request for current operation. */
        areq = af_alg_alloc_areq(sk, sizeof(struct af_alg_async_req) +
                                     crypto_skcipher_reqsize(tfm));
@@ -117,13 +123,24 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
 
        if (msg->msg_iocb && !is_sync_kiocb(msg->msg_iocb)) {
                /* AIO operation */
+               sock_hold(sk);
                areq->iocb = msg->msg_iocb;
+
+               /* Remember output size that will be generated. */
+               areq->outlen = len;
+
                skcipher_request_set_callback(&areq->cra_u.skcipher_req,
                                              CRYPTO_TFM_REQ_MAY_SLEEP,
                                              af_alg_async_cb, areq);
                err = ctx->enc ?
                        crypto_skcipher_encrypt(&areq->cra_u.skcipher_req) :
                        crypto_skcipher_decrypt(&areq->cra_u.skcipher_req);
+
+               /* AIO operation in progress */
+               if (err == -EINPROGRESS || err == -EBUSY)
+                       return -EIOCBQUEUED;
+
+               sock_put(sk);
        } else {
                /* Synchronous operation */
                skcipher_request_set_callback(&areq->cra_u.skcipher_req,
@@ -136,19 +153,9 @@ static int _skcipher_recvmsg(struct socket *sock, struct msghdr *msg,
                                                 &ctx->wait);
        }
 
-       /* AIO operation in progress */
-       if (err == -EINPROGRESS) {
-               sock_hold(sk);
-
-               /* Remember output size that will be generated. */
-               areq->outlen = len;
-
-               return -EIOCBQUEUED;
-       }
 
 free:
-       af_alg_free_areq_sgls(areq);
-       sock_kfree_s(sk, areq, areq->areqlen);
+       af_alg_free_resources(areq);
 
        return err ? err : len;
 }
@@ -382,7 +389,7 @@ static int skcipher_accept_parent_nokey(void *private, struct sock *sk)
        INIT_LIST_HEAD(&ctx->tsgl_list);
        ctx->len = len;
        ctx->used = 0;
-       ctx->rcvused = 0;
+       atomic_set(&ctx->rcvused, 0);
        ctx->more = 0;
        ctx->merge = 0;
        ctx->enc = 0;