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>
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 <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 @@
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 @@
#ifdef CONFIG_PROC_FS
.show = crypto_rng_show,
#endif
+ .report = crypto_rng_report,
};
EXPORT_SYMBOL_GPL(crypto_rng_type);