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authorSteffen Klassert <steffen.klassert@secunet.com>2012-03-29 09:04:46 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2012-03-29 19:52:48 +0800
commit5219a5342ab13650ae0f0c62319407268c48d0ab (patch)
tree42f49976ca15418e512bc172e2b4b08c86b2008a /crypto
parent1e1229940045a537c61fb69f86010a8774e576d0 (diff)
downloadlinux-linaro-stable-5219a5342ab13650ae0f0c62319407268c48d0ab.tar.gz
crypto: user - Fix size of netlink dump message
The default netlink message size limit might be exceeded when dumping a lot of algorithms to userspace. As a result, not all of the instantiated algorithms dumped to userspace. So calculate an upper bound on the message size and call netlink_dump_start() with that value. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/crypto_user.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index e91c16111ed3..f1ea0a064135 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -457,12 +457,20 @@ static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if ((type == (CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE) &&
(nlh->nlmsg_flags & NLM_F_DUMP))) {
+ struct crypto_alg *alg;
+ u16 dump_alloc = 0;
+
if (link->dump == NULL)
return -EINVAL;
+
+ list_for_each_entry(alg, &crypto_alg_list, cra_list)
+ dump_alloc += CRYPTO_REPORT_MAXSIZE;
+
{
struct netlink_dump_control c = {
.dump = link->dump,
.done = link->done,
+ .min_dump_alloc = dump_alloc,
};
return netlink_dump_start(crypto_nlsk, skb, nlh, &c);
}