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crypto: Add userspace report for rng type algorithms 

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Steffen Klassert 2011-09-27 07:47:11 +02:00 committed by Herbert Xu
parent a55465dca7
commit 792608e9c2
2 changed files with 26 additions and 0 deletions
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20
crypto/rng.c
View File

@ -21,6 +21,8 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/cryptouser.h>
#include <net/netlink.h>
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);

6
include/linux/cryptouser.h
View File

@ -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;
};