[hpoussin] 43006: Implement GetFileInformation() on disks for i386 architecture

Author: hpoussin
Date: Sun Sep  6 22:00:23 2009
New Revision: 43006

URL: http://svn.reactos.org/svn/reactos?rev=43006&view=rev
Log:
Implement GetFileInformation() on disks for i386 architecture

Modified:
    trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c

Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/i...
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/hardware.c [iso-8859-1] Sun Sep  6 22:00:23 2009
@@ -402,6 +402,7 @@
     ULONG DriveNumber;
     ULONG SectorSize;
     ULONGLONG SectorOffset;
+    ULONGLONG SectorCount;
     ULONGLONG SectorNumber;
 } DISKCONTEXT;

@@ -415,7 +416,13 @@

static LONG DiskGetFileInformation(ULONG FileId, FILEINFORMATION* Information)
 {
-    return EINVAL;
+    DISKCONTEXT* Context = FsGetDeviceSpecific(FileId);
+
+    RtlZeroMemory(Information, sizeof(FILEINFORMATION));
+    Information->EndingAddress.QuadPart = (Context->SectorOffset + Context->SectorCount) * Context->SectorSize;
+    Information->CurrentAddress.LowPart = (Context->SectorOffset + Context->SectorNumber) * Context->SectorSize;
+
+    return ESUCCESS;
 }

static LONG DiskOpen(CHAR* Path, OPENMODE OpenMode, ULONG* FileId)
@@ -423,6 +430,7 @@
     DISKCONTEXT* Context;
     ULONG DriveNumber, DrivePartition, SectorSize;
     ULONGLONG SectorOffset = 0;
+    ULONGLONG SectorCount = 0;
     PARTITION_TABLE_ENTRY PartitionTableEntry;
     CHAR FileName[1];

@@ -434,6 +442,11 @@
         if (!MachDiskGetPartitionEntry(DriveNumber, DrivePartition, &PartitionTableEntry))
             return EINVAL;
         SectorOffset = PartitionTableEntry.SectorCountBeforePartition;
+        SectorCount = PartitionTableEntry.PartitionSectorCount;
+    }
+    else
+    {
+        SectorCount = 0; /* FIXME */
     }

Context = MmHeapAlloc(sizeof(DISKCONTEXT));
@@ -442,6 +455,7 @@
     Context->DriveNumber = DriveNumber;
     Context->SectorSize = SectorSize;
     Context->SectorOffset = SectorOffset;
+    Context->SectorCount = SectorCount;
     Context->SectorNumber = 0;
     FsSetDeviceSpecific(*FileId, Context);