[PATCH v3 17/17] crypto: Add userspace report for compress type algorithms

[Steffen Klassert]

Signed-off-by: Steffen Klassert <steffen.klass...@secunet.com>
---
 crypto/crypto_user.c       |   20 ++++++++++++++++++++
 include/linux/cryptouser.h |    1 +
 2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index cd08b2f..b5a55f6 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -89,6 +89,21 @@ nla_put_failure:
        return -EMSGSIZE;
 }
 
+static int crypto_report_comp(struct sk_buff *skb, struct crypto_alg *alg)
+{
+       struct crypto_report_comp rcomp;
+
+       snprintf(rcomp.type, CRYPTO_MAX_ALG_NAME, "%s", "compression");
+
+       NLA_PUT(skb, CRYPTOCFGA_REPORT_COMPRESS,
+               sizeof(struct crypto_report_comp), &rcomp);
+
+       return 0;
+
+nla_put_failure:
+       return -EMSGSIZE;
+}
+
 static int crypto_report_one(struct crypto_alg *alg,
                             struct crypto_user_alg *ualg, struct sk_buff *skb)
 {
@@ -126,6 +141,11 @@ static int crypto_report_one(struct crypto_alg *alg,
                        goto nla_put_failure;
 
                break;
+       case CRYPTO_ALG_TYPE_COMPRESS:
+               if (crypto_report_comp(skb, alg))
+                       goto nla_put_failure;
+
+               break;
        }
 
 out:
diff --git a/include/linux/cryptouser.h b/include/linux/cryptouser.h
index 797dfd9..8e7b796 100644
--- a/include/linux/cryptouser.h
+++ b/include/linux/cryptouser.h
@@ -47,6 +47,7 @@ enum crypto_attr_type_t {
        CRYPTOCFGA_REPORT_PCOMPRESS,    /* struct crypto_report_comp */
        CRYPTOCFGA_REPORT_RNG,          /* struct crypto_report_rng */
        CRYPTOCFGA_REPORT_CIPHER,       /* struct crypto_report_cipher */
+       CRYPTOCFGA_REPORT_COMPRESS,     /* struct crypto_report_comp */
        __CRYPTOCFGA_MAX
 
 #define CRYPTOCFGA_MAX (__CRYPTOCFGA_MAX - 1)
-- 
1.7.0.4

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