diff options
Diffstat (limited to 'crypto/af_alg.c')
| -rw-r--r-- | crypto/af_alg.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index a6f581ab200c..d11db80d24cd 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/net.h> #include <linux/rwsem.h> +#include <linux/sched.h> #include <linux/sched/signal.h> #include <linux/security.h> @@ -253,6 +254,14 @@ static int alg_setsockopt(struct socket *sock, int level, int optname, if (!type->setauthsize) goto unlock; err = type->setauthsize(ask->private, optlen); + break; + case ALG_SET_DRBG_ENTROPY: + if (sock->state == SS_CONNECTED) + goto unlock; + if (!type->setentropy) + goto unlock; + + err = type->setentropy(ask->private, optval, optlen); } unlock: @@ -285,6 +294,11 @@ int af_alg_accept(struct sock *sk, struct socket *newsock, bool kern) security_sock_graft(sk2, newsock); security_sk_clone(sk, sk2); + /* + * newsock->ops assigned here to allow type->accept call to override + * them when required. + */ + newsock->ops = type->ops; err = type->accept(ask->private, sk2); nokey = err == -ENOKEY; @@ -303,7 +317,6 @@ int af_alg_accept(struct sock *sk, struct socket *newsock, bool kern) alg_sk(sk2)->parent = sk; alg_sk(sk2)->type = type; - newsock->ops = type->ops; newsock->state = SS_CONNECTED; if (nokey) @@ -845,9 +858,15 @@ int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size, } lock_sock(sk); - if (ctx->init && (init || !ctx->more)) { - err = -EINVAL; - goto unlock; + if (ctx->init && !ctx->more) { + if (ctx->used) { + err = -EINVAL; + goto unlock; + } + + pr_info_once( + "%s sent an empty control message without MSG_MORE.\n", + current->comm); } ctx->init = true; |