crypto: af_alg - Allow arbitrarily long algorithm names (3f69cc60) · Commits · 戴 / test

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>

crypto/af_alg.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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) {

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