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[FASTFAT]

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In IRP_MJ_QUERY_INFORMATION/IRP_MJ_SET_INFORMATION, handle the case when we receive buggy FO without FCB.
This fixes bugchecks when using FileSpy.

CORE-12448

svn path=/trunk/; revision=73362
This commit is contained in:
Pierre Schweitzer 2016-11-23 18:21:03 +00:00
parent 07d9832b5f
commit c3b22d159c
1 changed files with 13 additions and 0 deletions
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13
reactos/drivers/filesystems/fastfat/finfo.c
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@ -1444,6 +1444,12 @@ VfatQueryInformation(
DPRINT("VfatQueryInformation is called for '%s'\n",
FileInformationClass >= FileMaximumInformation - 1 ? "????" : FileInformationClassNames[FileInformationClass]);
if (FCB == NULL)
{
DPRINT1("IRP_MJ_QUERY_INFORMATION without FCB!\n");
IrpContext->Irp->IoStatus.Information = 0;
return STATUS_INVALID_PARAMETER;
}
SystemBuffer = IrpContext->Irp->AssociatedIrp.SystemBuffer;
BufferLength = IrpContext->Stack->Parameters.QueryFile.Length;
@ -1569,6 +1575,13 @@ VfatSetInformation(
DPRINT("FileInformationClass %d\n", FileInformationClass);
DPRINT("SystemBuffer %p\n", SystemBuffer);
if (FCB == NULL)
{
DPRINT1("IRP_MJ_SET_INFORMATION without FCB!\n");
IrpContext->Irp->IoStatus.Information = 0;
return STATUS_INVALID_PARAMETER;
}
/* Special: We should call MmCanFileBeTruncated here to determine if changing
the file size would be allowed. If not, we bail with the right error.
We must do this before acquiring the lock. */