fs: ubifs: Add authentication support

This adds UBIFS authentication support. For now, we do not do
any authentication even on authenticated UBIFS images. Since
this behaviour is not what the user normally expects when mounting
authenticated images we only do this when the user explicitly allows
it in "global.ubifs.allow_authenticated_unauthenticated". If the
flag is false then we refuse mounting such an image and return -EPERM
instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/digest.h b/include/digest.h
index a87e29bd28..474bdd160a 100644
--- a/include/digest.h
+++ b/include/digest.h
@@ -113,6 +113,11 @@ static inline struct digest *digest_alloc(const char *name)
 	return NULL;
 }
 
+static inline struct digest *digest_alloc_by_algo(enum hash_algo algo)
+{
+	return NULL;
+}
+
 static inline void digest_free(struct digest *d)
 {
 }