diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-01-04 13:35:18 +0900 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-02-13 10:34:12 +0000 |
| commit | 02edec2abebf72c5915c8c3b968e653eb69d9257 (patch) | |
| tree | 8579c76c22eddeb7d26d19ad600e2533446a4340 /crypto | |
| parent | a4bbb982ded26deac0d63b5c5a6d7c6a53f6283d (diff) | |
crypto: af_alg - Add nokey compatibility path
commit 37766586c965d63758ad542325a96d5384f4a8c9 upstream.
This patch adds a compatibility path to support old applications
that do acept(2) before setkey.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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 0ca108f3c840..de130c24a64b 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; @@ -257,6 +259,7 @@ 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; @@ -275,12 +278,17 @@ 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; @@ -288,6 +296,9 @@ 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: |