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authorHerbert Xu <herbert@gondor.apana.org.au>2017-04-06 11:16:09 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-04-10 14:17:26 +0300
commit3f69cc60768b2cd15e5cbd3a4b91c46535138382 (patch)
tree1f2750b1d97702c3678d95c717ed86e3c756f805 /crypto
parent4473710df1f8779c59b33737eeaa151596907761 (diff)
downloadlinux-3f69cc60768b2cd15e5cbd3a4b91c46535138382.tar.xz
crypto: af_alg - Allow arbitrarily long algorithm names
This patch removes the hard-coded 64-byte limit on the length of the algorithm name through bind(2). The address length can now exceed that. The user-space structure remains unchanged. In order to use a longer name simply extend the salg_name array beyond its defined 64 bytes length. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/af_alg.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 690deca17c35..3556d8eb54a7 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -160,11 +160,11 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (sock->state == SS_CONNECTED)
return -EINVAL;
- if (addr_len != sizeof(*sa))
+ if (addr_len < sizeof(*sa))
return -EINVAL;
sa->salg_type[sizeof(sa->salg_type) - 1] = 0;
- sa->salg_name[sizeof(sa->salg_name) - 1] = 0;
+ sa->salg_name[sizeof(sa->salg_name) + addr_len - sizeof(*sa) - 1] = 0;
type = alg_get_type(sa->salg_type);
if (IS_ERR(type) && PTR_ERR(type) == -ENOENT) {