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mi: add support for uint16 array (UINT16A) properties (#2490)

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Co-authored-by: EisenbergD <dominik.eisenberg@beiersdorf.com>
Co-authored-by: Jan-Otto Kröpke <mail@jkroepke.de>
Signed-off-by: EisenbergD <dominik.eisenberg@beiersdorf.com>
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
This commit is contained in:
Dominik Eisenberg
2026-10-05 22:47:06 +02:00
committed by GitHub
co-authored by EisenbergD Jan-Otto Kröpke
parent 4748db204e
commit 44fd6ccc85
5 changed files with 179 additions and 3 deletions
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internal/mi/instance.go
+10 -3
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@@ -98,8 +98,14 @@ func (instance *Instance) GetElement(elementName string) (*Element, error) {
return nil, fmt.Errorf("failed to convert element name %s to UTF-16: %w", elementName, err)
}
// MI_Value is a union sized to its largest member. On 64-bit MI_Datetime is
// 36 bytes and the union rounds up to 40 bytes for 8-byte alignment, so a
// full MI_Value must be provided; the previous single-word buffer let the
// provider write past it and corrupt the stack for array or datetime
// elements. Word 0 holds the scalar/pointer/array-data; word 1 holds the
// array element count for array types.
var (
value uintptr
valueBuf [5]uint64
valueType ValueType
)
@@ -107,7 +113,7 @@ func (instance *Instance) GetElement(elementName string) (*Element, error) {
instance.ft.GetElement,
uintptr(unsafe.Pointer(instance)),
uintptr(unsafe.Pointer(elementNameUTF16)),
uintptr(unsafe.Pointer(&value)),
uintptr(unsafe.Pointer(&valueBuf)),
uintptr(unsafe.Pointer(&valueType)),
0,
0,
@@ -118,7 +124,8 @@ func (instance *Instance) GetElement(elementName string) (*Element, error) {
}
return &Element{
value: value,
value: uintptr(valueBuf[0]),
arrayLen: uint32(valueBuf[1]),
valueType: valueType,
}, nil
}