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Implement GetFileInformation() on disks for i386 architecture

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svn path=/trunk/; revision=43006
This commit is contained in:
Hervé Poussineau 2009-09-06 20:00:23 +00:00
parent e6aa81a105
commit 0472f141b8
1 changed files with 15 additions and 1 deletions
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16
reactos/boot/freeldr/freeldr/arch/i386/hardware.c
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@ -402,6 +402,7 @@ typedef struct tagDISKCONTEXT
ULONG DriveNumber;
ULONG SectorSize;
ULONGLONG SectorOffset;
ULONGLONG SectorCount;
ULONGLONG SectorNumber;
} DISKCONTEXT;
@ -415,7 +416,13 @@ static LONG DiskClose(ULONG FileId)
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 @@ static LONG DiskOpen(CHAR* Path, OPENMODE OpenMode, ULONG* FileId)
DISKCONTEXT* Context;
ULONG DriveNumber, DrivePartition, SectorSize;
ULONGLONG SectorOffset = 0;
ULONGLONG SectorCount = 0;
PARTITION_TABLE_ENTRY PartitionTableEntry;
CHAR FileName[1];
@ -434,6 +442,11 @@ static LONG DiskOpen(CHAR* Path, OPENMODE OpenMode, ULONG* FileId)
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 @@ static LONG DiskOpen(CHAR* Path, OPENMODE OpenMode, ULONG* FileId)
Context->DriveNumber = DriveNumber;
Context->SectorSize = SectorSize;
Context->SectorOffset = SectorOffset;
Context->SectorCount = SectorCount;
Context->SectorNumber = 0;
FsSetDeviceSpecific(*FileId, Context);