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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-04 13:35:18 +0900 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-18 18:16:10 +0800 |
| commit | 37766586c965d63758ad542325a96d5384f4a8c9 (patch) | |
| tree | 54a72d60fe6ec7621d066d712561eb381a7f01aa /crypto | |
| parent | a383292c86663bbc31ac62cc0c04fc77504636a6 (diff) | |
| download | lwn-37766586c965d63758ad542325a96d5384f4a8c9.tar.gz lwn-37766586c965d63758ad542325a96d5384f4a8c9.zip | |
crypto: af_alg - Add nokey compatibility path
This patch adds a compatibility path to support old applications
that do acept(2) before setkey.
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/af_alg.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c index eaf98e287d89..6566d2eb0142 100644 --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -76,6 +76,8 @@ int af_alg_register_type(const struct af_alg_type *type) goto unlock; type->ops->owner = THIS_MODULE; + if (type->ops_nokey) + type->ops_nokey->owner = THIS_MODULE; node->type = type; list_add(&node->list, &alg_types); err = 0; @@ -267,6 +269,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock) const struct af_alg_type *type; struct sock *sk2; int err; + bool nokey; lock_sock(sk); type = ask->type; @@ -285,12 +288,17 @@ int af_alg_accept(struct sock *sk, struct socket *newsock) security_sk_clone(sk, sk2); err = type->accept(ask->private, sk2); + + nokey = err == -ENOKEY; + if (nokey && type->accept_nokey) + err = type->accept_nokey(ask->private, sk2); + if (err) goto unlock; sk2->sk_family = PF_ALG; - if (!ask->refcnt++) + if (nokey || !ask->refcnt++) sock_hold(sk); alg_sk(sk2)->parent = sk; alg_sk(sk2)->type = type; @@ -298,6 +306,9 @@ int af_alg_accept(struct sock *sk, struct socket *newsock) newsock->ops = type->ops; newsock->state = SS_CONNECTED; + if (nokey) + newsock->ops = type->ops_nokey; + err = 0; unlock: |