Changeset 6c501f8 in mainline for uspace/lib/ext4/libext4_block_group.h

Timestamp:

2011-09-30T20:00:30Z (13 years ago)

Author:

Frantisek Princ <frantisek.princ@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

00a8f1b

Parents:

9875711

Message:

_mounted and _unmounted operations skeletons (copied from ext2fs)

File:

• uspace/lib/ext4/libext4_block_group.h (modified) (1 diff)

uspace/lib/ext4/libext4_block_group.h

@@ -34 +34 @@
 #define LIBEXT4_LIBEXT4_BLOCK_GROUP_H_
 
+#include <sys/types.h>
+
+/*
+ * Structure of a blocks group descriptor
+ */
+typedef struct ext4_block_group {
+        uint32_t bg_block_bitmap_lo; // Blocks bitmap block
+        uint32_t bg_inode_bitmap_lo; // Inodes bitmap block
+        uint32_t bg_inode_table_lo; // Inodes table block
+        uint16_t bg_free_blocks_count_lo; // Free blocks count
+        uint16_t bg_free_inodes_count_lo; // Free inodes count
+        uint16_t bg_used_dirs_count_lo; // Directories count
+        uint16_t bg_flags; // EXT4_BG_flags (INODE_UNINIT, etc)
+        uint32_t bg_reserved[2]; // Likely block/inode bitmap checksum
+        uint16_t bg_itable_unused_lo; // Unused inodes count
+        uint16_t bg_checksum; // crc16(sb_uuid+group+desc)
+        uint32_t bg_block_bitmap_hi; // Blocks bitmap block MSB
+        uint32_t bg_inode_bitmap_hi; // Inodes bitmap block MSB
+        uint32_t bg_inode_table_hi; // Inodes table block MSB
+        uint16_t bg_free_blocks_count_hi; // Free blocks count MSB
+        uint16_t bg_free_inodes_count_hi; // Free inodes count MSB
+        uint16_t bg_used_dirs_count_hi; // Directories count MSB
+        uint16_t bg_itable_unused_hi;  // Unused inodes count MSB
+        uint32_t bg_reserved2[3]; // Padding
+} ext4_group_desc_t;
 
 #endif