X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=lwext4%2Fext4_balloc.h;h=f2c3dc9cd6fc895c5f8f658b808c58a772fc645a;hb=745c18c6062f49f83782537a06e3f5ffc04e40e1;hp=f3ca6e3abb8a53f5655b743deea43311c305aefe;hpb=ead60f17e6fe9c651e2c954cd2f3eba796fa9ff5;p=lwext4.git

diff --git a/lwext4/ext4_balloc.h b/lwext4/ext4_balloc.h
index f3ca6e3..f2c3dc9 100644
--- 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
@@ -42,40 +41,64 @@
 #ifndef EXT4_BALLOC_H_
 #define EXT4_BALLOC_H_
 
-#include <ext4_config.h>
-#include <ext4_types.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "ext4_config.h"
+#include "ext4_types.h"
 
 #include <stdint.h>
 #include <stdbool.h>
 
+/**@brief Compute number of block group from block address.
+ * @param sb superblock pointer.
+ * @param baddr Absolute address of block.
+ * @return Block group index
+ */
+uint32_t ext4_balloc_get_bgid_of_block(struct ext4_sblock *s,
+				       ext4_fsblk_t baddr);
 
-/**@brief   Get first datablock in block group
- * @param   s superblock descriptor
- * @param   bg_ref block group reference
- * @return  block id of the first datablock in block group*/
-uint32_t ext4_balloc_get_first_data_block_in_group(struct ext4_sblock *s,
-    struct ext4_block_group_ref * bg_ref);
+/**@brief Compute the starting block address of a block group
+ * @param sb   superblock pointer.
+ * @param bgid block group index
+ * @return Block address
+ */
+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);
+			   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);
+			    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);
+			    ext4_fsblk_t goal,
+			    ext4_fsblk_t *baddr);
 
 /**@brief   Try allocate selected block.
  * @param   inode_ref inode reference
@@ -83,11 +106,14 @@ int ext4_balloc_alloc_block(struct ext4_inode_ref *inode_ref,
  * @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_ */
 
 /**
  * @}
  */
-