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api: account for adapter disappearing during deletion

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This makes the race less fatal.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2020-11-09 13:02:31 +01:00
parent 3dbaafd4ae
commit 7c5233a80e
1 changed files with 6 additions and 4 deletions
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10
api/adapter.c
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@ -1707,8 +1707,9 @@ _Return_type_success_(return != FALSE) BOOL WINAPI WintunDeleteAdapter(
SP_REMOVEDEVICE_PARAMS Params = { .ClassInstallHeader = { .cbSize = sizeof(SP_CLASSINSTALL_HEADER),
.InstallFunction = DIF_REMOVE },
.Scope = DI_REMOVEDEVICE_GLOBAL };
if (!SetupDiSetClassInstallParamsW(DevInfo, &DevInfoData, &Params.ClassInstallHeader, sizeof(Params)) ||
!SetupDiCallClassInstaller(DIF_REMOVE, DevInfo, &DevInfoData))
if ((!SetupDiSetClassInstallParamsW(DevInfo, &DevInfoData, &Params.ClassInstallHeader, sizeof(Params)) ||
!SetupDiCallClassInstaller(DIF_REMOVE, DevInfo, &DevInfoData)) &&
GetLastError() != ERROR_NO_SUCH_DEVINST)
{
LastError = LOG_LAST_ERROR(L"Failed to remove existing adapter");
goto cleanupDevInfo;
@ -1759,8 +1760,9 @@ static _Return_type_success_(return != FALSE) BOOL
LOG(WINTUN_LOG_WARN, L"Failed to force close adapter handles");
LOG(WINTUN_LOG_INFO, L"Removing existing adapter");
if (!SetupDiSetClassInstallParamsW(DevInfo, &DevInfoData, &Params.ClassInstallHeader, sizeof(Params)) ||
!SetupDiCallClassInstaller(DIF_REMOVE, DevInfo, &DevInfoData))
if ((!SetupDiSetClassInstallParamsW(DevInfo, &DevInfoData, &Params.ClassInstallHeader, sizeof(Params)) ||
!SetupDiCallClassInstaller(DIF_REMOVE, DevInfo, &DevInfoData)) &&
GetLastError() != ERROR_NO_SUCH_DEVINST)
{
LOG_LAST_ERROR(L"Failed to remove existing adapter");
LastError = LastError != ERROR_SUCCESS ? LastError : GetLastError();