crypto: Add userspace report for ablkcipher 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/ablkcipher.c b/crypto/ablkcipher.c
index fdc67d3..5ea49ad 100644 (file)
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -23,6 +23,8 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/seq_file.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
 
 #include <crypto/scatterwalk.h>
 
@@ -381,6 +383,28 @@ static int crypto_init_ablkcipher_ops(struct crypto_tfm *tfm, u32 type,
        return 0;
 }
 
+static int crypto_ablkcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+       struct crypto_report_blkcipher rblkcipher;
+
+       snprintf(rblkcipher.type, CRYPTO_MAX_ALG_NAME, "%s", "ablkcipher");
+       snprintf(rblkcipher.geniv, CRYPTO_MAX_ALG_NAME, "%s",
+                alg->cra_ablkcipher.geniv ?: "<default>");
+
+       rblkcipher.blocksize = alg->cra_blocksize;
+       rblkcipher.min_keysize = alg->cra_ablkcipher.min_keysize;
+       rblkcipher.max_keysize = alg->cra_ablkcipher.max_keysize;
+       rblkcipher.ivsize = alg->cra_ablkcipher.ivsize;
+
+       NLA_PUT(skb, CRYPTOCFGA_REPORT_BLKCIPHER,
+               sizeof(struct crypto_report_blkcipher), &rblkcipher);
+
+       return 0;
+
+nla_put_failure:
+       return -EMSGSIZE;
+}
+
 static void crypto_ablkcipher_show(struct seq_file *m, struct crypto_alg *alg)
        __attribute__ ((unused));
 static void crypto_ablkcipher_show(struct seq_file *m, struct crypto_alg *alg)
@@ -403,6 +427,7 @@ const struct crypto_type crypto_ablkcipher_type = {
 #ifdef CONFIG_PROC_FS
        .show = crypto_ablkcipher_show,
 #endif
+       .report = crypto_ablkcipher_report,
 };
 EXPORT_SYMBOL_GPL(crypto_ablkcipher_type);