diff options
Diffstat (limited to 'crypto/af_alg.c')
| -rw-r--r-- | crypto/af_alg.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index 28fc323e3fe3..9fcb91ea10c4 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -635,6 +635,7 @@ void af_alg_pull_tsgl(struct sock *sk, size_t used, struct scatterlist *dst, if (!ctx->used) ctx->merge = 0; + ctx->init = ctx->more; } EXPORT_SYMBOL_GPL(af_alg_pull_tsgl); @@ -734,9 +735,10 @@ EXPORT_SYMBOL_GPL(af_alg_wmem_wakeup); * * @sk socket of connection to user space * @flags If MSG_DONTWAIT is set, then only report if function would sleep + * @min Set to minimum request size if partial requests are allowed. * @return 0 when writable memory is available, < 0 upon error */ -int af_alg_wait_for_data(struct sock *sk, unsigned flags) +int af_alg_wait_for_data(struct sock *sk, unsigned flags, unsigned min) { DEFINE_WAIT_FUNC(wait, woken_wake_function); struct alg_sock *ask = alg_sk(sk); @@ -754,7 +756,9 @@ int af_alg_wait_for_data(struct sock *sk, unsigned flags) if (signal_pending(current)) break; timeout = MAX_SCHEDULE_TIMEOUT; - if (sk_wait_event(sk, &timeout, (ctx->used || !ctx->more), + if (sk_wait_event(sk, &timeout, + ctx->init && (!ctx->more || + (min && ctx->used >= min)), &wait)) { err = 0; break; @@ -843,7 +847,7 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size, } lock_sock(sk); - if (!ctx->more && ctx->used) { + if (ctx->init && (init || !ctx->more)) { err = -EINVAL; goto unlock; } @@ -854,6 +858,7 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size, memcpy(ctx->iv, con.iv->iv, ivsize); ctx->aead_assoclen = con.aead_assoclen; + ctx->init = true; } while (size) { |