ext4_trans: flush the buffer in the following case.

[lwext4.git] / lwext4 / ext4_balloc.h

diff --git a/lwext4/ext4_balloc.h b/lwext4/ext4_balloc.h
index b3c84885841b281cf1cc5188f2033130d504e5ae..f2c3dc9cd6fc895c5f8f658b808c58a772fc645a 100644 (file)
--- a/lwext4/ext4_balloc.h
+++ b/lwext4/ext4_balloc.h
@@ -1,7 +1,6 @@
 /*
  * Copyright (c) 2013 Grzegorz Kostka (kostka.grzegorz@gmail.com)
  *
- *
  * HelenOS:
  * Copyright (c) 2012 Martin Sucha
  * Copyright (c) 2012 Frantisek Princ
@@ -42,6 +41,10 @@
 #ifndef EXT4_BALLOC_H_
 #define EXT4_BALLOC_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "ext4_config.h"
 #include "ext4_types.h"
 
@@ -54,34 +57,48 @@
  * @return Block group index
  */
 uint32_t ext4_balloc_get_bgid_of_block(struct ext4_sblock *s,
-                                      uint32_t baddr);
+                                      ext4_fsblk_t baddr);
 
 /**@brief Compute the starting block address of a block group
  * @param sb   superblock pointer.
  * @param bgid block group index
  * @return Block address
  */
-uint32_t ext4_balloc_get_block_of_bgid(struct ext4_sblock *s,
-                                      uint32_t bgid);
+ext4_fsblk_t ext4_balloc_get_block_of_bgid(struct ext4_sblock *s,
+                                          uint32_t bgid);
+
+/**@brief Calculate and set checksum of block bitmap.
+ * @param sb superblock pointer.
+ * @param bg block group
+ * @param bitmap bitmap buffer
+ */
+void ext4_balloc_set_bitmap_csum(struct ext4_sblock *sb,
+                                struct ext4_bgroup *bg,
+                                void *bitmap);
 
 /**@brief   Free block from inode.
  * @param   inode_ref inode reference
  * @param   baddr block address
  * @return  standard error code*/
-int ext4_balloc_free_block(struct ext4_inode_ref *inode_ref, uint32_t baddr);
+int ext4_balloc_free_block(struct ext4_inode_ref *inode_ref,
+                          ext4_fsblk_t baddr);
 
 /**@brief   Free blocks from inode.
  * @param   inode_ref inode reference
- * @param   baddr block address
+ * @param   first block address
+ * @param   count block count
  * @return  standard error code*/
-int ext4_balloc_free_blocks(struct ext4_inode_ref *inode_ref, uint32_t first,
-                           uint32_t count);
+int ext4_balloc_free_blocks(struct ext4_inode_ref *inode_ref,
+                           ext4_fsblk_t first, uint32_t count);
 
 /**@brief   Allocate block procedure.
  * @param   inode_ref inode reference
+ * @param   goal
  * @param   baddr allocated block address
  * @return  standard error code*/
-int ext4_balloc_alloc_block(struct ext4_inode_ref *inode_ref, uint32_t *baddr);
+int ext4_balloc_alloc_block(struct ext4_inode_ref *inode_ref,
+                           ext4_fsblk_t goal,
+                           ext4_fsblk_t *baddr);
 
 /**@brief   Try allocate selected block.
  * @param   inode_ref inode reference
@@ -89,7 +106,11 @@ int ext4_balloc_alloc_block(struct ext4_inode_ref *inode_ref, uint32_t *baddr);
  * @param   free if baddr is not allocated
  * @return  standard error code*/
 int ext4_balloc_try_alloc_block(struct ext4_inode_ref *inode_ref,
-                               uint32_t baddr, bool *free);
+                               ext4_fsblk_t baddr, bool *free);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* EXT4_BALLOC_H_ */