ext4_journal: modify the first 4 bytes of the logged block when needed

[lwext4.git] / src / ext4_inode.c

diff --git a/src/ext4_inode.c b/src/ext4_inode.c
index 9b6eb87650a0e3e879eeb3457db6dace8bc94baa..513da6015d08b3bd0fab4b818850e9584713889b 100644 (file)
--- a/src/ext4_inode.c
+++ b/src/ext4_inode.c
@@ -41,6 +41,10 @@
 
 #include "ext4_config.h"
 #include "ext4_types.h"
+#include "ext4_misc.h"
+#include "ext4_errno.h"
+#include "ext4_debug.h"
+
 #include "ext4_inode.h"
 #include "ext4_super.h"
 
@@ -266,14 +270,21 @@ void ext4_inode_set_generation(struct ext4_inode *inode, uint32_t gen)
        inode->generation = to_le32(gen);
 }
 
-uint16_t ext4_inode_get_extra_isize(struct ext4_inode *inode)
+uint16_t ext4_inode_get_extra_isize(struct ext4_sblock *sb,
+                                   struct ext4_inode *inode)
 {
-       return to_le16(inode->extra_isize);
+       if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_EXTRA_ISIZE))
+               return to_le16(inode->extra_isize);
+       else
+               return 0;
 }
 
-void ext4_inode_set_extra_isize(struct ext4_inode *inode, uint16_t size)
+void ext4_inode_set_extra_isize(struct ext4_sblock *sb,
+                               struct ext4_inode *inode,
+                               uint16_t size)
 {
-       inode->extra_isize = to_le16(size);
+       if (ext4_sb_feature_ro_com(sb, EXT4_FRO_COM_EXTRA_ISIZE))
+               inode->extra_isize = to_le16(size);
 }
 
 uint64_t ext4_inode_get_file_acl(struct ext4_inode *inode,
@@ -317,6 +328,26 @@ void ext4_inode_set_indirect_block(struct ext4_inode *inode, uint32_t idx,
        inode->blocks[idx + EXT4_INODE_INDIRECT_BLOCK] = to_le32(block);
 }
 
+uint32_t ext4_inode_get_dev(struct ext4_inode *inode)
+{
+       uint32_t dev_0, dev_1;
+       dev_0 = ext4_inode_get_direct_block(inode, 0);
+       dev_1 = ext4_inode_get_direct_block(inode, 1);
+
+       if (dev_0)
+               return dev_0;
+       else
+               return dev_1;
+}
+
+void ext4_inode_set_dev(struct ext4_inode *inode, uint32_t dev)
+{
+       if (dev & ~0xFFFF)
+               ext4_inode_set_direct_block(inode, 1, dev);
+       else
+               ext4_inode_set_direct_block(inode, 0, dev);
+}
+
 uint32_t ext4_inode_type(struct ext4_sblock *sb, struct ext4_inode *inode)
 {
        return (ext4_inode_get_mode(sb, inode) & EXT4_INODE_MODE_TYPE_MASK);