Changeset 76316 in vbox for trunk/include/iprt/formats

Timestamp:

Dec 20, 2018 3:33:24 PM (6 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

127607

Message:

Runtime/fs/extvfs: Updates, implement extent tree walking. Enables access to ext4 filesystems as long as they don't use the flex_bg feature

File:

• trunk/include/iprt/formats/ext.h (modified) (2 diffs)

trunk/include/iprt/formats/ext.h

@@ -831 +831 @@
 /** Magic number identifying an extent header. */
 #define EXT_EXTENT_HDR_MAGIC                         UINT16_C(0xf30a)
+/** Maximum depth an extent header can have. */
+#define EXT_EXTENT_HDR_DEPTH_MAX                     UINT16_C(5)
 
 
@@ -873 +875 @@
 /** Pointer to a const leaf node. */
 typedef const EXTEXTENT *PCEXTEXTENT;
+
+/** Length field limit for a populated extent, fields greater than that limit indicate a sparse extent. */
+#define EXT_EXTENT_LENGTH_LIMIT                      UINT16_C(32768)