LU-12275 sec: deal with encrypted object size

[fs/lustre-release.git] / lustre / include / dt_object.h

diff --git a/lustre/include/dt_object.h b/lustre/include/dt_object.h
index d9cc933..c1c5d28 100644 (file)
--- a/lustre/include/dt_object.h
+++ b/lustre/include/dt_object.h
@@ -1317,11 +1317,21 @@ struct dt_body_operations {
         * then the method should maintain space accounting for the given
         * credentials.
         *
+        * user_size parameter is the apparent size of the file, ie the size
+        * of the clear text version of the file. It can differ from the actual
+        * amount of valuable data received when a file is encrypted,
+        * because encrypted pages always contain PAGE_SIZE bytes of data,
+        * even if clear text data is only a few bytes.
+        * In case of encrypted file, apparent size will be stored as the inode
+        * size, so that servers return to clients an object size they can use
+        * to determine clear text size.
+        *
         * \param[in] env       execution environment for this thread
         * \param[in] dt        object
         * \param[in] lb        array of descriptors for the buffers
         * \param[in] nr        size of the array
         * \param[in] th        transaction handle
+        * \param[in] user_size apparent size
         *
         * \retval 0            on success
         * \retval negative     negated errno on error
@@ -1330,7 +1340,8 @@ struct dt_body_operations {
                                struct dt_object *dt,
                                struct niobuf_local *lb,
                                int nr,
-                               struct thandle *th);
+                               struct thandle *th,
+                               __u64 user_size);
 
        /**
         * Return logical to physical block mapping for a given extent
@@ -2495,13 +2506,13 @@ static inline int dt_declare_write_commit(const struct lu_env *env,
 
 
 static inline int dt_write_commit(const struct lu_env *env,
-                                  struct dt_object *d, struct niobuf_local *lnb,
-                                  int n, struct thandle *th)
+                                 struct dt_object *d, struct niobuf_local *lnb,
+                                 int n, struct thandle *th, __u64 size)
 {
-        LASSERT(d);
-        LASSERT(d->do_body_ops);
-        LASSERT(d->do_body_ops->dbo_write_commit);
-        return d->do_body_ops->dbo_write_commit(env, d, lnb, n, th);
+       LASSERT(d);
+       LASSERT(d->do_body_ops);
+       LASSERT(d->do_body_ops->dbo_write_commit);
+       return d->do_body_ops->dbo_write_commit(env, d, lnb, n, th, size);
 }
 
 static inline int dt_read_prep(const struct lu_env *env, struct dt_object *d,