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setupapi: actually fix padding by rounding up to sizeof(void*)

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This commit is contained in:
Jason A. Donenfeld 2019-04-19 10:19:00 +09:00
parent d024393335
commit c7a26dfef3
1 changed files with 1 additions and 1 deletions
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2
tun/wintun/setupapi/setupapi_windows.go
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@ -157,7 +157,7 @@ func SetupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *DevInfoDa
data := (*DrvInfoDetailData)(unsafe.Pointer(&buf[0]))
// unsafe.Sizeof(data) >= sizeof(SP_DRVINFO_DETAIL_DATA) due to Go trailing padding. SetupAPI expects exactly sizeof(SP_DRVINFO_DETAIL_DATA).
sizeAPI := unsafe.Offsetof(data.hardwareID) + unsafe.Sizeof(data.hardwareID)
sizeAPI := ((unsafe.Sizeof(uintptr(0)) - 1) | (unsafe.Offsetof(data.hardwareID) + unsafe.Sizeof(data.hardwareID) - 1) + 1)
data.size = uint32(sizeAPI)
err := setupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData, data, bufCapacity, &bufLen)