From 07a5fa4abd8b6965d4585d3b110f89bdf5612aff Mon Sep 17 00:00:00 2001 From: Steffen Klassert Date: Tue, 27 Sep 2011 07:48:01 +0200 Subject: [PATCH] crypto: Add userspace report for cipher type algorithms Signed-off-by: Steffen Klassert Signed-off-by: Herbert Xu --- crypto/crypto_user.c | 29 +++++++++++++++++++++++++++++ include/linux/cryptouser.h | 8 ++++++++ 2 files changed, 37 insertions(+) diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c index 8a0c5c6c6589..52459ae711a9 100644 --- a/crypto/crypto_user.c +++ b/crypto/crypto_user.c @@ -70,6 +70,25 @@ static struct crypto_alg *crypto_alg_match(struct crypto_user_alg *p, int exact) return alg; } +static int crypto_report_cipher(struct sk_buff *skb, struct crypto_alg *alg) +{ + struct crypto_report_cipher rcipher; + + snprintf(rcipher.type, CRYPTO_MAX_ALG_NAME, "%s", "cipher"); + + rcipher.blocksize = alg->cra_blocksize; + rcipher.min_keysize = alg->cra_cipher.cia_min_keysize; + rcipher.max_keysize = alg->cra_cipher.cia_max_keysize; + + NLA_PUT(skb, CRYPTOCFGA_REPORT_CIPHER, + sizeof(struct crypto_report_cipher), &rcipher); + + return 0; + +nla_put_failure: + return -EMSGSIZE; +} + static int crypto_report_one(struct crypto_alg *alg, struct crypto_user_alg *ualg, struct sk_buff *skb) { @@ -98,6 +117,16 @@ static int crypto_report_one(struct crypto_alg *alg, if (alg->cra_type && alg->cra_type->report) { if (alg->cra_type->report(skb, alg)) goto nla_put_failure; + + goto out; + } + + switch (alg->cra_flags & (CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL)) { + case CRYPTO_ALG_TYPE_CIPHER: + if (crypto_report_cipher(skb, alg)) + goto nla_put_failure; + + break; } out: diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index ed8a40e8fb6b..532fb58f16bf 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -42,6 +42,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */ CRYPTOCFGA_REPORT_COMPRESS, /* struct crypto_report_comp */ CRYPTOCFGA_REPORT_RNG, /* struct crypto_report_rng */ + CRYPTOCFGA_REPORT_CIPHER, /* struct crypto_report_cipher */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -67,6 +68,13 @@ struct crypto_report_hash { unsigned int digestsize; }; +struct crypto_report_cipher { + char type[CRYPTO_MAX_ALG_NAME]; + unsigned int blocksize; + unsigned int min_keysize; + unsigned int max_keysize; +}; + struct crypto_report_blkcipher { char type[CRYPTO_MAX_NAME]; char geniv[CRYPTO_MAX_NAME]; -- 2.30.2