LU-12275 sec: introduce null algo for filename encryption

[fs/lustre-release.git] / libcfs / libcfs / crypto / crypto.c

diff --git a/libcfs/libcfs/crypto/crypto.c b/libcfs/libcfs/crypto/crypto.c
index 379affb..bc888cc 100644 (file)
--- a/libcfs/libcfs/crypto/crypto.c
+++ b/libcfs/libcfs/crypto/crypto.c
@@ -166,6 +166,13 @@ int llcrypt_crypt_block(const struct inode *inode, llcrypt_direction_t rw,
        struct crypto_skcipher *tfm = ci->ci_ctfm;
        int res = 0;
 
+       if (tfm == NULL) {
+               if (dest_page != src_page)
+                       memcpy(page_address(dest_page), page_address(src_page),
+                              PAGE_SIZE);
+               return 0;
+       }
+
        if (WARN_ON_ONCE(len <= 0))
                return -EINVAL;
        if (WARN_ON_ONCE(len % LL_CRYPTO_BLOCK_SIZE != 0))