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sys: create: correctly compute file name lengths when streams are involved

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This commit is contained in:
Bill Zissimopoulos 2016-10-04 11:35:39 -07:00
parent e58ac1fbde
commit 1d435269bd
1 changed files with 5 additions and 6 deletions
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11
src/sys/create.c
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@ -224,16 +224,15 @@ static NTSTATUS FspFsvolCreateNoLock(
if (0 != StreamPart.Buffer) if (0 != StreamPart.Buffer)
{ {
ASSERT( ASSERT(
FileName.Buffer <= StreamPart.Buffer && (PUINT8)FileName.Buffer + sizeof(WCHAR) <= (PUINT8)StreamPart.Buffer &&
StreamPart.Buffer + StreamPart.Length / sizeof(WCHAR) <= (PUINT8)StreamPart.Buffer + StreamPart.Length <=
FileName.Buffer + FileName.Length / sizeof(WCHAR)); (PUINT8)FileName.Buffer + FileName.Length);
FileName.Length = (USHORT) FileName.Length = (USHORT)
(((PUINT8)StreamPart.Buffer + StreamPart.Length / sizeof(WCHAR)) - ((PUINT8)StreamPart.Buffer - (PUINT8)FileName.Buffer + StreamPart.Length);
(PUINT8)FileName.Buffer - 1);
MainFileName.Length = MainFileName.MaximumLength = (USHORT) MainFileName.Length = MainFileName.MaximumLength = (USHORT)
((PUINT8)StreamPart.Buffer - (PUINT8)FileName.Buffer - 1); ((PUINT8)StreamPart.Buffer - (PUINT8)FileName.Buffer - sizeof(WCHAR));
MainFileName.Buffer = FileName.Buffer; MainFileName.Buffer = FileName.Buffer;
} }