Changeset 1912 for Whitix/trunk/fs/fat/fat.h

Timestamp:

02/24/09 20:57:26 (3 years ago)

Author:

mwhitworth

Message:

Add support for keep track of free clusters in a FAT32 filesystem, add WriteSuper function and ReadFsInfo.

Files:

• Whitix/trunk/fs/fat/fat.h (modified) (2 diffs)

Whitix/trunk/fs/fat/fat.h

@@ -125 +125 @@
 }PACKED;
 
+struct FatFsInfo
+{
+        DWORD reserved1;
+        DWORD signature;
+        DWORD freeClusters;
+        DWORD nextCluster;
+        DWORD reserved2;
+};
+
 struct FatDirEntry
 {
@@ -155 +164 @@
 struct FatSbInfo
 {
-        DWORD fatStart,fatLength,rootDirStart,rootDirLength, rootDirEnts;
-        DWORD firstDataSector,totalDataSectors,clusterLength,secsPerClus;
-        DWORD fatType,invalidCluster,numFats;
+        /* FAT information */
+        DWORD fatStart, fatLength, fatType, invalidCluster, numFats;
+        
+        /* Root directory information */
+        DWORD rootDirStart, rootDirLength, rootDirEnts;
+        
+        /* Data sector and cluster layout */
+        DWORD firstDataSector,totalDataSectors, clusterLength, secsPerClus;
+        
+        /* Values that are only updated on FAT32 */
+        DWORD freeClusters, fsInfoSector;
 };