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crypto: Add userspace report for aead type algorithms

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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 07:44:27 +02:00 committed by Herbert Xu
parent 3e29c1095a
commit 6ad414fe71
2 changed files with 34 additions and 0 deletions
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25
crypto/aead.c
View file

@ -21,6 +21,8 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
#include <linux/cryptouser.h>
#include <net/netlink.h>
#include "internal.h"
@ -109,6 +111,28 @@ static int crypto_init_aead_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
return 0;
}
static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_aead raead;
struct aead_alg *aead = &alg->cra_aead;
snprintf(raead.type, CRYPTO_MAX_ALG_NAME, "%s", "aead");
snprintf(raead.geniv, CRYPTO_MAX_ALG_NAME, "%s",
aead->geniv ?: "<built-in>");
raead.blocksize = alg->cra_blocksize;
raead.maxauthsize = aead->maxauthsize;
raead.ivsize = aead->ivsize;
NLA_PUT(skb, CRYPTOCFGA_REPORT_AEAD,
sizeof(struct crypto_report_aead), &raead);
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
__attribute__ ((unused));
static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg)
@ -130,6 +154,7 @@ const struct crypto_type crypto_aead_type = {
#ifdef CONFIG_PROC_FS
.show = crypto_aead_show,
#endif
.report = crypto_aead_report,
};
EXPORT_SYMBOL_GPL(crypto_aead_type);

9
include/linux/cryptouser.h
View file

@ -39,6 +39,7 @@ enum crypto_attr_type_t {
CRYPTOCFGA_REPORT_LARVAL, /* struct crypto_report_larval */
CRYPTOCFGA_REPORT_HASH, /* struct crypto_report_hash */
CRYPTOCFGA_REPORT_BLKCIPHER, /* struct crypto_report_blkcipher */
CRYPTOCFGA_REPORT_AEAD, /* struct crypto_report_aead */
__CRYPTOCFGA_MAX
#define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
@ -72,3 +73,11 @@ struct crypto_report_blkcipher {
unsigned int max_keysize;
unsigned int ivsize;
};
struct crypto_report_aead {
char type[CRYPTO_MAX_NAME];
char geniv[CRYPTO_MAX_NAME];
unsigned int blocksize;
unsigned int maxauthsize;
unsigned int ivsize;
};