Changeset 23 for trunk/hal/generic/hal_gpt.h

Timestamp:

Jun 18, 2017, 10:06:41 PM (7 years ago)

Author:

alain

Message:

Introduce syscalls.

File:

• trunk/hal/generic/hal_gpt.h (modified) (1 diff)

trunk/hal/generic/hal_gpt.h

@@ -166 +166 @@
                       uint32_t * attr,
                       ppn_t    * ppn );
+/****************************************************************************************
+ * This function copies all valid entries from the source <src_gpt> to the <dst_pgt>.
+ * The <src_gpt> and the <dst_gpt> point on the same physical pages.
+ * If the <cow> argument is true, the GPT_WRITABLE attribute is reset for all writable
+ * entries in both <src_gpt> and <dst_gpt>, and the PG_COW flag is registered in all
+ * writable physical page descriptors, to support the Copy-On-Write mechanism.
+ ****************************************************************************************
+ * @ dst_gpt   : [in]  pointer on the destination GPT.
+ * @ src_gpt   : [in]  pointer on the source GPT.
+ * @ cow       : [in]  activate the COPY-On-Write mechanism if true.
+ ***************************************************************************************/
+error_t hal_gpt_copy( gpt_t    * dst_gpt,
+                      gpt_t    * src_gpt,
+                      bool_t     cow );