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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-04-06 10:16:09 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-04-10 13:17:26 +0200 |
| commit | 3f69cc60768b2cd15e5cbd3a4b91c46535138382 (patch) | |
| tree | 1f2750b1d97702c3678d95c717ed86e3c756f805 /crypto | |
| parent | crypto: user - Prepare for CRYPTO_MAX_ALG_NAME expansion (diff) | |
| download | linux-3f69cc60768b2cd15e5cbd3a4b91c46535138382.tar.xz linux-3f69cc60768b2cd15e5cbd3a4b91c46535138382.zip | |
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.c | 4 |
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) { |