From: Steffen Klassert Subject: [PATCH v4 15/17] crypto: Add userspace report for rng type algorithms Date: Tue, 27 Sep 2011 07:47:11 +0200 Message-ID: <20110927054711.GR1808@secunet.com> References: <20110927052050.GB1808@secunet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-crypto@vger.kernel.org To: Herbert Xu Return-path: Received: from a.mx.secunet.com ([195.81.216.161]:33002 "EHLO a.mx.secunet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752781Ab1I0FrO (ORCPT ); Tue, 27 Sep 2011 01:47:14 -0400 Content-Disposition: inline In-Reply-To: <20110927052050.GB1808@secunet.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: Signed-off-by: Steffen Klassert --- crypto/rng.c | 20 ++++++++++++++++++++ include/linux/cryptouser.h | 6 ++++++ 2 files changed, 26 insertions(+), 0 deletions(-) diff --git a/crypto/rng.c b/crypto/rng.c index 45229ae..feb7de0 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -21,6 +21,8 @@ #include #include #include +#include +#include static DEFINE_MUTEX(crypto_default_rng_lock); struct crypto_rng *crypto_default_rng; @@ -58,6 +60,23 @@ static int crypto_init_rng_ops(struct crypto_tfm *tfm, u32 type, u32 mask) return 0; } +static int crypto_rng_report(struct sk_buff *skb, struct crypto_alg *alg) +{ + struct crypto_report_rng rrng; + + snprintf(rrng.type, CRYPTO_MAX_ALG_NAME, "%s", "rng"); + + rrng.seedsize = alg->cra_rng.seedsize; + + NLA_PUT(skb, CRYPTOCFGA_REPORT_RNG, + sizeof(struct crypto_report_rng), &rrng); + + return 0; + +nla_put_failure: + return -EMSGSIZE; +} + static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg) __attribute__ ((unused)); static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg) @@ -78,6 +97,7 @@ const struct crypto_type crypto_rng_type = { #ifdef CONFIG_PROC_FS .show = crypto_rng_show, #endif + .report = crypto_rng_report, }; EXPORT_SYMBOL_GPL(crypto_rng_type); diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h index c8c1dfc..ed8a40e 100644 --- a/include/linux/cryptouser.h +++ b/include/linux/cryptouser.h @@ -41,6 +41,7 @@ enum crypto_attr_type_t { CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */ CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */ CRYPTOCFGA_REPORT_COMPRESS, /* struct crypto_report_comp */ + CRYPTOCFGA_REPORT_RNG, /* struct crypto_report_rng */ __CRYPTOCFGA_MAX #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1) @@ -86,3 +87,8 @@ struct crypto_report_aead { struct crypto_report_comp { char type[CRYPTO_MAX_NAME]; }; + +struct crypto_report_rng { + char type[CRYPTO_MAX_NAME]; + unsigned int seedsize; +}; -- 1.7.0.4